CN102750914A - Display module driving circuit, driving method and liquid crystal television - Google Patents

Abstract

The embodiment of the invention provides a display module driving circuit, a liquid crystal television and a display module driving method, relates to the field of electronic technology, and solves the technical problem in the prior art that a video processing chip is debugged with a heavy workload. The display module driving circuit comprises a data processing module, a GAMMA voltage generating module and a driving module, wherein the data processing module is used for processing an image displaying signal into a line synchronization signal, a field synchronization signal, a data driving signal and a scanning driving signal; the GAMMA voltage generating module is used for transmitting a GAMMA voltage corresponding to the GAMMA voltage value which is corrected according to a preset GAMMA curve to the driving module after receiving the line synchronization signal; and the driving module is used for generating a driving voltage by using the GAMMA voltage as the reference voltage according to the line synchronization signal, the field synchronization signal, the data driving signal and the scanning driving signal, and loading the driving voltage on pixels on a liquid crystal display module and corresponding to the line synchronization signal, the field synchronization signal and the scanning driving signal. The display module driving circuit, the liquid crystal television and the display module driving method are applied to improvement of the display effect of the liquid crystal television.

Description

Display module driving circuit, driving method and liquid crystal TV set

Technical field

The present invention relates to electronic technology field, the liquid crystal TV set that is specifically related to a kind of display module driving circuit, display module driving method and is provided with this display module driving circuit.

Background technology

Along with the develop rapidly of electronic technology, televisor has become one of household electrical appliance the most common in people's daily life, at present, the function of liquid crystal TV set from strength to strength, popularity rate is also increasingly high.

As shown in Figure 1, existing liquid crystal TV set comprises display module driving circuit, LCD MODULE and backlight,

Backlight, the pixel that is used on the LCD MODULE provides backlight;

The display module driving circuit is used to the data-signal that LCD MODULE provides certain format, and this data-signal is in order to control pixel transmittance, and the high more then brightness of pixel transmittance is also high more;

Display module driving circuit as shown in Figure 1; Comprise video frequency processing chip and drive display module; Video frequency processing chip comprises decoder module, GAMMA correction module and LVDS coding module; Drive display module and comprise TCON process chip, GAMMA voltage generation chip and chip for driving, wherein:

Decoder module is used for received television signal, and with input GAMMA correction module behind the television signal decoder;

The GAMMA correction module is used for according to the decoded TV signal of predefined GAMMA curvature correction, and the input of the TV signal after will proofreading and correct LVDS coding module;

The LVDS coding module, being used for the television signal coding after proofreading and correct is input TCON process chip behind the image display signal of LVDS form;

The TCON process chip is used for the image display signal of LVDS form is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

GAMMA voltage generation chip is used for chip for driving is sent GAMMA voltage;

Chip for driving; Being used for GAMMA voltage is reference voltage; Generate driving voltage according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal, and driving voltage is loaded on the pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal on the LCD MODULE.

In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:

Because the GAMMA correction module is arranged in the video frequency processing chip in the prior art; And the image display signal that outputs to LCD MODULE is carried out the GAMMA method of correcting through video frequency processing chip; Look-up table need be set in video frequency processing chip (to be claimed again: the LOOKUP table); Corresponding relation data between look-up table storage internal register and the brightness; The data volume of the employed data of look-up table is very big usually; And this method need realize on complete machine through software algorithm, and in the different Video processing schemes video frequency processing chip principle of work, adjustment method with and inner timing mode also variant, so the debugging work load of video frequency processing chip also can be bigger;

In addition; Because the debugging work load of video frequency processing chip is bigger in the said method, in order to reduce debugging work load, will use a LCD MODULE model machine that video frequency processing chip is debugged usually earlier; Debugged after the video frequency processing chip; Re-use this video frequency processing chip respectively with the use of arranging in pairs or groups of other a plurality of LCD MODULEs because the difference of manufacturer and production technology, cause each LCD MODULE display effect can not be in full accord; So when a kind of video frequency processing chip uses with a plurality of different LCD MODULEs collocation, can cause the colour temperature consistance of LCD MODULE poor.

Summary of the invention

The embodiment of the invention provides a kind of display module driving circuit on the one hand; A kind of liquid crystal TV set that is provided with this display module driving circuit is provided on the other hand; Again on the one hand; A kind of display module driving method also is provided, has solved the bigger technical matters of the debugging work load of video frequency processing chip in the prior art.

For achieving the above object, embodiments of the invention adopt following technical scheme:

The display module driving circuit that the embodiment of the invention provided; Comprise data processing module, the GAMMA voltage generating module that links to each other with said data processing module and the driver module that links to each other with said data processing module, said GAMMA voltage generating module respectively, wherein:

Said data processing module is used for image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

Said GAMMA voltage generating module is used for when receiving said line synchronizing signal, and said driver module is sent according to the corresponding GAMMA voltage of the GAMMA magnitude of voltage after the predefined GAMMA curvature correction;

Said driver module; Being used for said GAMMA voltage is reference voltage; And generate driving voltage, and said driving voltage is loaded on the pixel corresponding with said line synchronizing signal, said field sync signal and said scanning drive signal on the said LCD MODULE according to said line synchronizing signal, said field sync signal, said data drive signal and said scanning drive signal.

Further, the said GAMMA magnitude of voltage after the correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the red GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the green GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the blue GTG picture of different brackets.

Further; Said driver module; Being used for to the N on the said LCD MODULE pixel on capable, to load with R group GAMMA voltage be the said driving voltage that reference voltage generates; Perhaps, to the N on the said LCD MODULE pixel on capable to load with B group GAMMA voltage be the said driving voltage that reference voltage generates;

It is the said driving voltage that reference voltage generates that pixel to the N+1 on the said LCD MODULE on capable loads with G group GAMMA voltage;

It is the said driving voltage that reference voltage generates that pixel to the N+2 on the said LCD MODULE on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on the said LCD MODULE pixel on capable to load with R group GAMMA voltage be the said driving voltage that reference voltage generates;

Wherein: said N >=1, and be natural number, said N is corresponding with said line synchronizing signal.

Further, said image display signal is the LVDS form;

And/or said data processing module is the TCON chip;

And/or said driver module is the SOURCE chip for driving;

And/or said predefined GAMMA curve is GAMMA 2.2 or GAMMA 2.5 typical curves.

Further, said GAMMA voltage generating module comprises data storage cell, magnitude of voltage output unit and data selection unit, wherein:

Said data storage cell is used to store the said GAMMA magnitude of voltage according to after the predefined GAMMA curvature correction;

Said data selection unit is used to receive said line synchronizing signal, and after receiving said line synchronizing signal, exports the memory address of said GAMMA magnitude of voltage or said GAMMA magnitude of voltage to said magnitude of voltage output unit;

Said magnitude of voltage output unit is used for said driver module is sent and the corresponding GAMMA voltage of said GAMMA magnitude of voltage.

Further, said GAMMA voltage generating module is a GAMMA voltage generation chip;

And/or said data storage cell is a buffer register;

And/or this display module driving circuit also comprises the picture signal processing module that links to each other with said data processing module, wherein:

Said picture signal processing module is used for received television signal, and is the said data processing module in the said display module driving circuit of input behind the image display signal with said processing television signals.

This liquid crystal TV set comprises the described display module driving circuit of the invention described above embodiment, LCD MODULE and backlight, wherein:

Said backlight, the pixel that is used on the said LCD MODULE provides backlight;

Said display module driving circuit, the pixel that is used on the said LCD MODULE provides in order to control the driving voltage of said pixel intensity.

This display module driving method may further comprise the steps at least:

Image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

According to predefined GAMMA curvature correction GAMMA magnitude of voltage;

With the corresponding said GAMMA voltage of the said GAMMA magnitude of voltage after proofreading and correct is reference voltage; And generate driving voltage, and said driving voltage is loaded on the pixel corresponding with said line synchronizing signal, said field sync signal and said scanning drive signal on the said LCD MODULE according to said line synchronizing signal, said field sync signal, said data drive signal and said scanning drive signal.

Further, the method according to predefined GAMMA curvature correction GAMMA magnitude of voltage may further comprise the steps:

S110, when detecting said LCD MODULE and show the GTG picture of different brackets in real time, the brightness value of the GTG picture that said LCD MODULE showed;

S120, when the brightness value of detected GTG picture does not meet the corresponding GAMMA curve of predefined and GTG picture, regulate the brightness value of the GTG picture that said LCD MODULE shows through the mode of regulating the GAMMA magnitude of voltage;

When S130, the brightness value of regulating the GTG picture that the GAMMA magnitude of voltage shown until detected said LCD MODULE in real time meet the corresponding GAMMA curve of predefined and GTG picture, the GAMMA magnitude of voltage of this moment is recorded as the GAMMA magnitude of voltage after the correction.

Further, said step S110 is automatically performed by the luminance test appearance, and said step S120, S130 are automatically performed by the GAMMA voltage generating module that links to each other with said luminance test appearance;

And/or the said GAMMA magnitude of voltage after the correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the red GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the green GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the blue GTG picture of different brackets;

This display module driving method, further comprising the steps of:

It is the said driving voltage that reference voltage generates that pixel to the N on the said LCD MODULE on capable loads with R group GAMMA voltage; Perhaps, to the N on the said LCD MODULE pixel on capable to load with B group GAMMA voltage be the said driving voltage that reference voltage generates;

It is the said driving voltage that reference voltage generates that pixel to the N+1 on the said LCD MODULE on capable loads with G group GAMMA voltage;

It is the said driving voltage that reference voltage generates that pixel to the N+2 on the said LCD MODULE on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on the said LCD MODULE pixel on capable to load with R group GAMMA voltage be the said driving voltage that reference voltage generates;

Wherein: said N >=1, and be natural number, said N is corresponding with said line synchronizing signal.

Compared with prior art, the embodiment of the invention provides the technique effect below producing at least in above-mentioned arbitrary technical scheme:

Because in the liquid crystal TV set that the embodiment of the invention provided; GAMMA voltage generating module can be to the driver module transmission and according to the corresponding GAMMA voltage of the GAMMA magnitude of voltage after the predefined GAMMA curvature correction; And driver module can be a reference voltage with the pairing GAMMA voltage of GAMMA magnitude of voltage after proofreading and correct; And according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal generation driving voltage; And driving voltage loaded on the pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal on the LCD MODULE; And driving voltage can be controlled the transmittance and the brightness of pixel; This shows; Can realize control through the mode of proofreading and correct the GAMMA magnitude of voltage in the embodiment of the invention, and then realize control, and use the operation of predefined GAMMA curvature correction GAMMA magnitude of voltage in GAMMA voltage generating module, to carry out the LCD MODULE display effect to the transmittance of the pixel on the LCD MODULE; Also can outside GAMMA voltage generating module, carry out; After for example can in the data processing equipment outside the GAMMA voltage generating module (for example computing machine), accomplishing correct operation, the GAMMA magnitude of voltage after will proofreading and correct again is stored in and supplies in the GAMMA voltage generating module GAMMA voltage generating module to call get final product, need not through video frequency processing chip the image display signal that outputs to LCD MODULE to be carried out the GAMMA correction; So need not video frequency processing chip is debugged, and then solved the bigger technical matters of the debugging work load of video frequency processing chip in the prior art;

Simultaneously; Owing to do not adopt through video frequency processing chip in the embodiment of the invention image display signal that outputs to LCD MODULE carried out the GAMMA method of correcting; So data storage capacity and data processing performance to video frequency processing chip require far below prior art; So display module driving circuit that compared with prior art, the embodiment of the invention provided and the liquid crystal TV set that this display module driving circuit is set also have the low advantage of cost;

In addition; Because using the method for operating of predefined GAMMA curvature correction GAMMA magnitude of voltage in the embodiment of the invention compares with the method for existing debugging video frequency processing chip; Data volume still less; Debugging speed is faster; So the display module driving circuit that the embodiment of the invention provided can directly need be debugged with the LCD MODULE of its collocation each, need not in advance the LCD MODULE model machine to be debugged, and then can in the process that the display module driving circuit is debugged separately to each LCD MODULE, eliminate because the difference of manufacturer and production technology; Make the defective that each LCD MODULE display effect is not quite identical, and then can better guarantee the colour temperature consistance of LCD MODULE.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the interior display module driving circuit of existing liquid crystal TV set and the synoptic diagram of the annexation between the LCD MODULE;

A kind of embodiment of the display module driving circuit that Fig. 2 provides for the embodiment of the invention and the synoptic diagram of the annexation between the LCD MODULE;

Another embodiment of the display module driving circuit that Fig. 3 provides for the embodiment of the invention and the synoptic diagram of the annexation between the LCD MODULE;

Another embodiment of the display module driving circuit that Fig. 4 provides for the embodiment of the invention and the synoptic diagram of the annexation between the LCD MODULE;

The schematic flow sheet of the display module driving method that Fig. 5 provides for the embodiment of the invention;

Fig. 6 is the practical implementation schematic flow sheet of step S1 among Fig. 5.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not paying creative work belongs to the scope that the present invention protects.

The embodiment of the invention provides a kind of easy debugging, display module driving circuit and a kind of liquid crystal TV set that is provided with this display module driving circuit with low cost.

As shown in Figure 2; The display module driving circuit that the embodiment of the invention provided; GAMMAvoltage generating module 2 that comprise data processing module 1, links to each other and thedriver module 3 that links to each other with data processing module 1, GAMMAvoltage generating module 2 respectively with data processing module 1, wherein:

Data processing module 1 is used for image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

GAMMAvoltage generating module 2 is used for when receiving line synchronizing signal, anddriver module 3 is sent according to the corresponding GAMMA voltage of the GAMMA magnitude of voltage after the predefined GAMMA curvature correction;

Driver module 3; Being used for GAMMA voltage is reference voltage; And generate driving voltage, and driving voltage is loaded on the pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal on theLCD MODULE 5 according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal.

Because in the liquid crystal TV set that the embodiment of the invention provided; GAMMA voltage generating module 2 can be to driver module 3 transmissions and according to the corresponding GAMMA voltage of the GAMMA magnitude of voltage after the predefined GAMMA curvature correction; And driver module 3 can be a reference voltage with the pairing GAMMA voltage of GAMMA magnitude of voltage after proofreading and correct; And according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal generation driving voltage; And driving voltage loaded on the pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal on the LCD MODULE 5; And driving voltage can be controlled the transmittance and the brightness of pixel; This shows; Can realize control through the mode of proofreading and correct the GAMMA magnitude of voltage in the embodiment of the invention, and then realize control, and use the operation of predefined GAMMA curvature correction GAMMA magnitude of voltage in GAMMA voltage generating module 2, to carry out LCD MODULE 5 display effects to the transmittance of the pixel on the LCD MODULE 5; Also can outside GAMMA voltage generating module 2, carry out; After for example can in the data processing equipment outside the GAMMA voltage generating module 2 (for example computing machine), accomplishing correct operation, the GAMMA magnitude of voltage after will proofreading and correct again is stored in and supplies GAMMA voltage generating module 2 to call in the GAMMA voltage generating module 2 get final product, need not through video frequency processing chip the image display signal that outputs to LCD MODULE 5 to be carried out the GAMMA correction; So need not video frequency processing chip is debugged, and then solved the bigger technical matters of the debugging work load of video frequency processing chip in the prior art;

Simultaneously; Owing to do not adopt through video frequency processing chip in the embodiment of the invention image display signal that outputs toLCD MODULE 5 carried out the GAMMA method of correcting; So data storage capacity and data processing performance to video frequency processing chip require far below prior art; So display module driving circuit that compared with prior art, the embodiment of the invention provided and the liquid crystal TV set that this display module driving circuit is set also have the low advantage of cost;

In addition; Because using the method for operating of predefined GAMMA curvature correction GAMMA magnitude of voltage in the embodiment of the invention compares with the method for existing debugging video frequency processing chip; Data volume still less; Debugging speed is faster; So the display module driving circuit that the embodiment of the invention provided can directly need be debugged with theLCD MODULE 5 of its collocation each, need not inadvance LCD MODULE 5 model machines to be debugged, and then can in the process that the display module driving circuit is debugged separately to eachLCD MODULE 5, eliminate because the difference of manufacturer and production technology; Make the not quite identical defective of eachLCD MODULE 5 display effect, and then can better guarantee the colour temperature consistance ofLCD MODULE 5.

Line synchronizing signal, the line number of the pixel that is used for confirming that driving voltage is loaded, the line number of the pixel that promptly need scan;

Field sync signal is used for the frame number of confirming that pixel is scanned;

Data drive signal is used to confirm to apply the size of the driving voltage (this voltage is aanalogvoltage) that is loaded on the pixel;

Scanning drive signal is used to control the switch of the corresponding thin film transistor (TFT) of each pixel, and driving voltage is regulated brightness through acting on exactly on the thin film transistor (TFT).

GAMMA magnitude of voltage after proofreading and correct in the present embodiment comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the red GTG picture of different brackets;

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the green GTG picture of different brackets;

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the blue GTG picture of different brackets.

WhenLCD MODULE 5 shows redness, green or the blue GTG picture of different brackets; Can use the luminance test appearance that the brightness of the GTG picture that it showed is detected; There are proportional relationship in detected brightness value and transmitance, just can calculate the value of transmitance through the brightness of measuring the GTG picture.

The luminance test appearance is a kind of a kind of equipment that is exclusively used in the brightness value of LCD MODULE when detectingLCD MODULE 5 and showing the red GTG picture (common 256) of different brackets.Certainly, also can use other devices or equipment to substitute the luminance test appearance in the present embodiment with brightness measuring ability.

The GAMMA curve is divided into three kinds; Promptly with the corresponding GAMMA curve of red GTG picture, with the corresponding GAMMA curve of green GTG picture and with the corresponding GAMMA curve of blue GTG picture; Represent the red GTG picture (256) of different brackets with the horizontal ordinate of the corresponding GAMMA curve of red GTG picture; Ordinate representes thatLCD MODULE 5 shows the value of the desirable transmitance of 256 different gray levels pictures; In like manner; Represent the red GTG picture (256) of different brackets, blue GTG picture (256) with the horizontal ordinate of green GTG picture, the corresponding GAMMA curve of blue GTG picture, ordinate representes thatLCD MODULE 5 shows the value of the desirable transmitance of 256 different green GTG pictures, blue GTG picture.

WhenLCD MODULE 5 shows the GTG picture of different brackets; There is certain corresponding relation between the value of the transmitance of the GTG picture that it showed and the GAMMA magnitude of voltage; The GAMMA curve that brightness value is corresponding with predefined and this color when the luminance test appearance is measured the GTG picture of a certain color (red, green or blue is wherein a kind of) thatLCD MODULE 5 shows different brackets is not at once; Then need transfer big or turn the GAMMA magnitude of voltage down; When the GAMMA magnitude of voltage is in a certain value; When the luminance test appearance is measuredLCD MODULE 5 and is shown the GTG picture of this color of different brackets the corresponding GAMMA curve of the value of the pairing transmitance of brightness value and predefined and this color corresponding or corresponding basically on (deviation is within allowable offset); Then should the time the GAMMA magnitude of voltage, be more satisfactory GAMMA magnitude of voltage, the GAMMA magnitude of voltage after just proofreading and correct.

With when the corresponding driving voltage of the GAMMA of overcorrect magnitude of voltage loads on the pixel on theLCD MODULE 5; The value of the pairing transmitance of brightness of the pixel on theLCD MODULE 5 meets predefined GAMMA curve; And then can relatively more suitable brightness be provided, thereby guarantee that 5 images displayed of LCD MODULE seem that the each several part brightness ratio is than consistent and uniform for human eye.

In addition; Owing to utilize the GAMMA curve to debug or timing in the prior art; The color of the GTG picture of not considering to be shown on the LCD MODULE 5; But; Wherein at least two GAMMA curves may be very big with preferred GAMMA typical curve (for example GAMMA2.2 typical curve) difference for the pairing GAMMA curve of transmittance of the pairing GAMMA curve of transmittance of the pairing GAMMA curve of the transmittance of detected red GTG picture, green GTG picture and blue GTG picture on LCD MODULE 5; But difference and little after three GAMMA curves are synthetic; Like this; When at least two GAMMA curves and preferred GAMMA typical curve difference were big, the consistance of LCD MODULE 5 colour temperatures can non-constant, the situation of certain GTG colour cast very easily occurred; And in the embodiment of the invention during according to GAMMA curvature correction GAMMA magnitude of voltage; R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage all are to proofread and correct respectively according to the color of different GTG pictures to obtain, so can guarantee that the pairing GAMMA curve of transmittance of the pairing GAMMA curve of the transmittance of detected red GTG picture on LCD MODULE 5, green GTG picture and the pairing GAMMA curve of transmittance of blue GTG picture all are to meet preferred GAMMA typical curve, and then can guarantee further that the consistance of LCD MODULE 5 colour temperatures is better.

Driver module 3 in the present embodiment; Be used for according to spacing color mixed principle; It is the driving voltage that reference voltage generates that pixel to the N on theLCD MODULE 5 on capable loads with R group GAMMA voltage; Perhaps, to the N on theLCD MODULE 5 pixel on capable to load with B group GAMMA voltage be the driving voltage that reference voltage generates;

It is the driving voltage that reference voltage generates that pixel to the N+1 on theLCD MODULE 5 on capable loads with G group GAMMA voltage;

It is the driving voltage that reference voltage generates that pixel to the N+2 on theLCD MODULE 5 on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on theLCD MODULE 5 pixel on capable to load with R group GAMMA voltage be the driving voltage that reference voltage generates;

Wherein: N >=1, and be natural number, N is corresponding with line synchronizing signal.

In general; Be the driving voltage that generates of benchmark, be the driving voltage that generates of benchmark and be that the driving voltage that benchmark generates loads on the pixel on theLCD MODULE 5 simultaneously with R group GAMMA voltage with B group GAMMA voltage with G group GAMMA voltage; And then when driving each pixel; The display effect performance ofLCD MODULE 5 is the most perfect; But under the mode of arranging about the rgb pixel of current main-stream; This method can increase the design difficulty and the manufacturing cost ofdriver module 3, thus in the presentembodiment driver module 3 according to spacing color mixed principle, to pixel on theLCD MODULE 5 load line by line respectively successively with R group GAMMA voltage be the driving voltage that generates of benchmark, with G group GAMMA voltage be the driving voltage that generates of benchmark and with B group GAMMA voltage be benchmark generate driving voltage the time; Can reduce the design difficulty ofdriver module 3, and then reduce the cost ofdriver module 3.

Becausecommon LCD MODULE 5 all comprises the multirow pixel; And area is big more; The line number of the pixel that theLCD MODULE 5 that resolution is high is more comprised is also many more; Repeat to load line by line with R group GAMMA voltage and be the driving voltage that generates of benchmark, be the driving voltage that generates of benchmark and be that the driving voltage that benchmark generates not only can be saved the operation of proofreading and correct driving voltage value again, and can guarantee the consistance of display effect betweenLCD MODULE 5 adjacent lines with B group GAMMA voltage with G group GAMMA voltage.

Predefined GAMMA curve is preferably GAMMA 2.2 typical curves in the present embodiment.Facts have proved: when using the GAMMA magnitude of voltage that meets GAMMA 2.2 typical curves to load on the pixel on theLCD MODULE 5, the display image picture ofLCD MODULE 5 can give human eye with reasonable visual experience.Certainly, predefined GAMMA curve also can use the GAMMA2.5 typical curve according to producer or user's needs in the present embodiment.

As shown in Figure 3, GAMMAvoltage generating module 2 in the present embodiment comprises data storage cell 21, data selection unit 23 and magnitude of voltage output unit 22, wherein:

Data storage cell 21 is used to store the GAMMA magnitude of voltage according to after the predefined GAMMA curvature correction;

Data selection unit 23 is used to receive and identify line synchronizing signal, will export magnitude of voltage output unit 22 to the corresponding GAMMA magnitude of voltage of line synchronizing signal or with the memory address of the corresponding GAMMA magnitude of voltage of line synchronizing signal;

Magnitude of voltage output unit 22 is used fordriver module 3 is sent and the corresponding GAMMA voltage of GAMMA magnitude of voltage.

Data storage cell 21 both can be integrated in the GAMMAvoltage generating module 2, also can be the memory device (for example USB flash disk) that GAMMAvoltage generating module 2 is outer and GAMMAvoltage generating module 2 removably connects.Data storage cell 21 is preferably and is integrated in the GAMMAvoltage generating module 2 in the present embodiment.

The faster the better for the travelling speed of data selection unit 23 and magnitude of voltage output unit 22, should be complementary with the transmission speed of line synchronizing signal at least.

GAMMAvoltage generating module 2 is preferably GAMMA voltage generation chip in the present embodiment,

And/or data storage cell 21 is preferably buffer register.

When GAMMAvoltage generating module 2 is used GAMMA voltage generation chip; Can upgrade to the GAMMA voltage generation chip in the existing liquid crystal TV set through the method for update software program and GAMMA magnitude of voltage, thereby utilize existing resources more fully.

Buffer register both can be used as the terminal of GAMMA magnitude of voltage; Also can offset data processing module 1, the difference between data selection unit 23 and the magnitude of voltage output unit 22 on operating speed, thereby guarantee the display image thatLCD MODULE 5 can be stablized, coordinate.Certainly, data storage cell 21 also can use other to have the memory device of data storage capacities in the present embodiment.

As shown in Figure 4, display module driving circuit in the present embodiment also comprises the picture signal processing module 4 that links to each other with data processing module 1, wherein:

Picture signal processing module 4 is used for received television signal, and is the data processing module 1 in the input display module driving circuit behind the image display signal with processing television signals.

Data processing module 1 can't directly receive and identify TV signal, so the function of data processing module 1 has been expanded in the existence of picture signal processing module 4.Picture signal processing module 4 is preferably the video frequency processing chip of liquid crystal TV set in the present embodiment.Certainly, the display module driving circuit also can not be provided with picture signal processing module 4 in the present embodiment, and data processing module 1 directly receives image display signal (the for example image of LVDS form).

Image display signal is the LVDS form in the present embodiment; And/or data processing module 1 is the TCON chip; And/ordriver module 3 is the SOURCE chip for driving.

The image display signal of LVDS form has the good advantage of versatility.TCON chip and SOURCE chip for driving are the chip of stable performance and technical comparative maturity; Use TCON chip and SOURCE chip for driving not only can make full use of existing resource, and help upgrading and transformation the existing liquid crystal TV set that uses TCON chip and SOURCE chip for driving.

The liquid crystal TV set that the embodiment of the invention provided comprises display module driving circuit,LCD MODULE 5 and backlight that the invention described above embodiment is provided, wherein:

Backlight, the pixel that is used on theLCD MODULE 5 provides backlight;

The display module driving circuit, the pixel that is used on theLCD MODULE 5 provides the driving voltage in order to the control pixel intensity.

Because the liquid crystal TV set that the embodiment of the invention provided has identical technical characterictic with the display module driving circuit that the invention described above embodiment is provided; So also can produce identical technique effect, solve identical technical matters, no longer repeat to set forth here.

Load on size through change, can change the transmittance of the pixel on theLCD MODULE 5, and then can reach the purpose of control pixel intensity like the driving voltage on the pixel on Fig. 2 or the LCD MODULE shown in Figure 35.

Certainly, the display module driving circuit that the invention described above embodiment provided also can be applied on other electronic equipments outside the liquid crystal TV set, for example desk-top LCD computer, notebook computer etc.

Like Fig. 2 and shown in Figure 5, the display module driving method that the embodiment of the invention provided may further comprise the steps at least:

S1, image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

S2, according to predefined GAMMA curvature correction GAMMA magnitude of voltage;

S3, with proofread and correct after the corresponding GAMMA voltage of GAMMA magnitude of voltage be reference voltage; And generate driving voltage, and driving voltage is loaded on the pixel corresponding with line synchronizing signal, field sync signal and scanning drive signal on theLCD MODULE 5 according to line synchronizing signal, field sync signal, data drive signal and scanning drive signal.

Because the display module driving method that the embodiment of the invention provided has identical technical characterictic with display module driving circuit and the liquid crystal TV set that the invention described above embodiment is provided; So also can produce identical technique effect, solve identical technical matters, so no longer repeat to set forth here.

Like Fig. 2 and shown in Figure 6, proofread and correct the method for GAMMA magnitude of voltage in the present embodiment, may further comprise the steps:

S11, when detectingLCD MODULE 5 and show the GTG picture of different brackets in real time, the brightness value of the GTG picture thatLCD MODULE 5 is shown;

S12, when the pairing transmitance of the brightness value of detected GTG picture does not meet the corresponding GAMMA curve of predefined and GTG picture, regulate the brightness value of the GTG picture thatLCD MODULE 5 shown through the mode of regulating the GAMMA magnitude of voltage;

When S13, the pairing transmitance of brightness value of regulating the GTG picture that the GAMMA magnitude of voltage shown until real-time detectedLCD MODULE 5 meet the corresponding GAMMA curve of predefined and GTG picture, the GAMMA magnitude of voltage of this moment is recorded as the GAMMA magnitude of voltage after the correction.

GAMMA magnitude of voltage after proofreading and correct in the present embodiment comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the red GTG picture of different brackets;

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the green GTG picture of different brackets;

Being that driving voltage that reference voltage generates loads on 5 last times of LCD MODULE with the corresponding GAMMA voltage of B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding GAMMA curve of red GTG picture whenLCD MODULE 5 showed the blue GTG picture of different brackets.

R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage all can adopt the method for the correction GAMMA magnitude of voltage that the invention described above provides to proofread and correct and obtain.For example: need to proofread and correct when obtaining R group GAMMA magnitude of voltage, can pass through following steps:

S110, when detectingLCD MODULE 5 and show the red GTG picture of different brackets in real time, the brightness value of the GTG picture that it showed;

S120, when the value of the pairing transmitance of brightness value of detected red GTG picture does not meet the corresponding GAMMA curve of predefined and red GTG picture, regulate the brightness value of the red GTG picture thatLCD MODULE 5 shown through the mode of regulating the GAMMA magnitude of voltage;

S130, adjusting GAMMA magnitude of voltage; When the value of the pairing transmitance of brightness value of real-time detected red GTG picture meets the corresponding GAMMA curve of predefined and red GTG picture, the GAMMA magnitude of voltage of this moment is recorded as R group GAMMA magnitude of voltage.

WhenLCD MODULE 5 shows redness, green or the blue GTG picture of different brackets; Can use the luminance test appearance that the brightness of the GTG picture that it showed is detected; There are proportional relationship in detected brightness value and transmitance, just can calculate the value of transmitance through the brightness of measuring the GTG picture.

The luminance test appearance is a kind of a kind of equipment that is exclusively used in the brightness value of LCD MODULE when detectingLCD MODULE 5 and showing the red GTG picture (common 256) of different brackets.Certainly, also can use other devices or equipment to substitute the luminance test appearance in the present embodiment with brightness measuring ability.

Above-mentioned steps S110 can be automatically performed by luminance test appearance or other devices with luminance test function in the present embodiment; Step S120 and step S130 can be automatically performed by the GAMMAvoltage generating module 2 that links to each other with luminance test appearance or other devices with luminance test function or other devices with data-handling capacity (for example computing machine); Certainly; Step S120 and step S130 also can carry out by operating personnel are artificial, are preferably and use GAMMAvoltage generating module 2 or other devices (for example computing machine) with data-handling capacity to automatically perform.When automatically performing, not only execution speed is fast, and accuracy rate is high.

The GAMMA curve is divided into three kinds; Promptly with the corresponding GAMMA curve of red GTG picture, with the corresponding GAMMA curve of green GTG picture and with the corresponding GAMMA curve of blue GTG picture; Represent the red GTG picture (256) of different brackets with the horizontal ordinate of the corresponding GAMMA curve of red GTG picture; Ordinate representes thatLCD MODULE 5 shows the value of the desirable transmitance of 256 different gray levels pictures; In like manner; Represent the red GTG picture (256) of different brackets, blue GTG picture (256) with the horizontal ordinate of green GTG picture, the corresponding GAMMA curve of blue GTG picture, ordinate representes thatLCD MODULE 5 shows the value of the desirable transmitance of 256 different green GTG pictures, blue GTG picture.

WhenLCD MODULE 5 shows the GTG picture of different brackets; There is certain corresponding relation between the value of the transmitance of the GTG picture that it showed and the GAMMA magnitude of voltage; The GAMMA curve that brightness value is corresponding with predefined and this color when the luminance test appearance is measured the GTG picture of a certain color (red, green or blue is wherein a kind of) thatLCD MODULE 5 shows different brackets is not at once; Then need transfer big or turn the GAMMA magnitude of voltage down; When the GAMMA magnitude of voltage is in a certain value; When the luminance test appearance is measuredLCD MODULE 5 and is shown the GTG picture of this color of different brackets the corresponding GAMMA curve of the value of the pairing transmitance of brightness value and predefined and this color corresponding or corresponding basically on (deviation is within allowable offset); Then should the time the GAMMA magnitude of voltage, be more satisfactory GAMMA magnitude of voltage, the GAMMA magnitude of voltage after just proofreading and correct.

With when the corresponding driving voltage of the GAMMA of overcorrect magnitude of voltage loads on the pixel on theLCD MODULE 5; The value of the pairing transmitance of brightness of the pixel on theLCD MODULE 5 meets predefined GAMMA curve; And then can relatively more suitable brightness be provided, thereby guarantee that 5 images displayed of LCD MODULE seem that the each several part brightness ratio is than consistent and uniform for human eye.

Display module driving method in the embodiment of the invention, further comprising the steps of:

According to spacing color mixed principle; It is the driving voltage that reference voltage generates that pixel to the N on theLCD MODULE 5 on capable loads with R group GAMMA voltage; Perhaps, to the N on theLCD MODULE 5 pixel on capable to load with B group GAMMA voltage be the driving voltage that reference voltage generates;

It is the driving voltage that reference voltage generates that pixel to the N+1 on theLCD MODULE 5 on capable loads with G group GAMMA voltage;

It is the driving voltage that reference voltage generates that pixel to the N+2 on theLCD MODULE 5 on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on theLCD MODULE 5 pixel on capable to load with R group GAMMA voltage be the driving voltage that reference voltage generates;

Wherein: N >=1, and be natural number, N is corresponding with line synchronizing signal.

According to spacing color mixed principle, when adopting on the multirow pixel of above method onLCD MODULE 5 load driver voltage, can onLCD MODULE 5, obtain more satisfactory display effect.

In general; Be the driving voltage that generates of benchmark, be the driving voltage that generates of benchmark and be that the driving voltage that benchmark generates loads on the pixel on theLCD MODULE 5 simultaneously with R group GAMMA voltage with B group GAMMA voltage with G group GAMMA voltage; And then when driving each pixel; The display effect performance ofLCD MODULE 5 is the most perfect; But under the mode of arranging about the rgb pixel of current main-stream; This method can increase the design difficulty and the manufacturing cost ofdriver module 3, thus in the presentembodiment driver module 3 according to spacing color mixed principle, to pixel on theLCD MODULE 5 load line by line respectively successively with R group GAMMA voltage be the driving voltage that generates of benchmark, with G group GAMMA voltage be the driving voltage that generates of benchmark and with B group GAMMA voltage be benchmark generate driving voltage the time; Can reduce the design difficulty ofdriver module 3, and then reduce the cost ofdriver module 3.

Becausecommon LCD MODULE 5 all comprises the multirow pixel; And area is big more; The line number of the pixel that theLCD MODULE 5 that resolution is high is more comprised is also many more; Repeat to load line by line with R group GAMMA voltage and be the driving voltage that generates of benchmark, be the driving voltage that generates of benchmark and be that the driving voltage that benchmark generates not only can be saved the operation of proofreading and correct driving voltage value again, and can guarantee the consistance of display effect betweenLCD MODULE 5 adjacent lines with B group GAMMA voltage with G group GAMMA voltage.

Predefined GAMMA curve is preferably GAMMA 2.2 typical curves in the present embodiment.Facts have proved: when using the GAMMA magnitude of voltage that meets GAMMA 2.2 typical curves to load on the pixel on theLCD MODULE 5, the display image picture ofLCD MODULE 5 can give human eye with reasonable visual experience.Certainly, predefined GAMMA curve also can use the GAMMA2.5 typical curve according to producer or user's needs in the present embodiment.

The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.

Claims (10)

1. display module driving circuit; It is characterized in that; Comprise data processing module, the GAMMA voltage generating module that links to each other with said data processing module and the driver module that links to each other with said data processing module, said GAMMA voltage generating module respectively, wherein:

Said data processing module is used for image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

Said GAMMA voltage generating module is used for when receiving said line synchronizing signal, and said driver module is sent according to the corresponding GAMMA voltage of the GAMMA magnitude of voltage after the predefined GAMMA curvature correction;

Said driver module; Being used for said GAMMA voltage is reference voltage; And generate driving voltage, and said driving voltage is loaded on the pixel corresponding with said line synchronizing signal, said field sync signal and said scanning drive signal on the said LCD MODULE according to said line synchronizing signal, said field sync signal, said data drive signal and said scanning drive signal.

2. display module driving circuit according to claim 1 is characterized in that, the said GAMMA magnitude of voltage after the correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the red GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the green GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the blue GTG picture of different brackets.

3. display module driving circuit according to claim 2; It is characterized in that; Said driver module; Being used for to the N on the said LCD MODULE pixel on capable, to load with R group GAMMA voltage be the said driving voltage that reference voltage generates, and perhaps, it is the said driving voltage that reference voltage generates that the pixel to the N on the said LCD MODULE on capable loads with B group GAMMA voltage;

It is the said driving voltage that reference voltage generates that pixel to the N+1 on the said LCD MODULE on capable loads with G group GAMMA voltage;

It is the said driving voltage that reference voltage generates that pixel to the N+2 on the said LCD MODULE on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on the said LCD MODULE pixel on capable to load with R group GAMMA voltage be the said driving voltage that reference voltage generates;

Wherein: said N >=1, and be natural number, said N is corresponding with said line synchronizing signal.

4. display module driving circuit according to claim 3 is characterized in that, said image display signal is the LVDS form;

And/or said data processing module is the TCON chip;

And/or said driver module is the SOURCE chip for driving;

And/or said predefined GAMMA curve is GAMMA 2.2 or GAMMA 2.5 typical curves.

5. display module driving circuit according to claim 1 is characterized in that, said GAMMA voltage generating module comprises data storage cell, magnitude of voltage output unit and data selection unit, wherein:

Said data storage cell is used to store the said GAMMA magnitude of voltage according to after the predefined GAMMA curvature correction;

Said data selection unit is used to receive said line synchronizing signal, and after receiving said line synchronizing signal, exports the memory address of said GAMMA magnitude of voltage or said GAMMA magnitude of voltage to said magnitude of voltage output unit;

Said magnitude of voltage output unit is used for said driver module is sent and the corresponding GAMMA voltage of said GAMMA magnitude of voltage.

6. display module driving circuit according to claim 5 is characterized in that, said GAMMA voltage generating module is a GAMMA voltage generation chip;

And/or said data storage cell is a buffer register;

And/or this display module driving circuit also comprises the picture signal processing module that links to each other with said data processing module, wherein:

Said picture signal processing module is used for received television signal, and is the said data processing module in the said display module driving circuit of input behind the image display signal with said processing television signals.

7. a liquid crystal TV set is characterized in that, comprises the arbitrary described display module driving circuit of claim 1-6, LCD MODULE and backlight, wherein:

Said backlight, the pixel that is used on the said LCD MODULE provides backlight;

Said display module driving circuit, the pixel that is used on the said LCD MODULE provides in order to control the driving voltage of said pixel intensity.

8. a display module driving method is characterized in that, may further comprise the steps at least:

Image display signal is treated to line synchronizing signal, field sync signal, data drive signal and scanning drive signal;

According to predefined GAMMA curvature correction GAMMA magnitude of voltage;

With with proofread and correct after the corresponding GAMMA voltage of GAMMA magnitude of voltage be reference voltage; And generate driving voltage, and said driving voltage is loaded on the pixel corresponding with said line synchronizing signal, said field sync signal and said scanning drive signal on the said LCD MODULE according to said line synchronizing signal, said field sync signal, said data drive signal and said scanning drive signal.

9. said according to Claim 8 display module driving method is characterized in that, the method according to predefined GAMMA curvature correction GAMMA magnitude of voltage may further comprise the steps:

S110, when detecting said LCD MODULE and show the GTG picture of different brackets in real time, the brightness value of the GTG picture that said LCD MODULE showed;

S120, when the brightness value of detected GTG picture does not meet the corresponding GAMMA curve of predefined and GTG picture, regulate the brightness value of the GTG picture that said LCD MODULE shows through the mode of regulating the GAMMA magnitude of voltage;

When S130, the brightness value of regulating the GTG picture that the GAMMA magnitude of voltage shown until detected said LCD MODULE in real time meet the corresponding GAMMA curve of predefined and GTG picture, the GAMMA magnitude of voltage of this moment is recorded as the GAMMA magnitude of voltage after the correction.

10. according to the said display module driving method of claim 9, it is characterized in that said step S110 is automatically performed by the luminance test appearance, said step S120, S130 are automatically performed by the GAMMA voltage generating module that links to each other with said luminance test appearance;

And/or the said GAMMA magnitude of voltage after the correction comprises R group GAMMA magnitude of voltage, G group GAMMA magnitude of voltage and B group GAMMA magnitude of voltage, wherein:

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said R group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the red GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said G group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the green GTG picture of different brackets;

Being driving voltage that reference voltage generates when loading on the said LCD MODULE with the corresponding said GAMMA voltage of said B group GAMMA magnitude of voltage, the value of the detected pairing transmitance of brightness value met predefined, and the corresponding said GAMMA curve of red GTG picture when said LCD MODULE showed the blue GTG picture of different brackets;

This display module driving method, further comprising the steps of:

It is the said driving voltage that reference voltage generates that pixel to the N on the said LCD MODULE on capable loads with R group GAMMA voltage; Perhaps, to the N on the said LCD MODULE pixel on capable to load with B group GAMMA voltage be the said driving voltage that reference voltage generates;

It is the said driving voltage that reference voltage generates that pixel to the N+1 on the said LCD MODULE on capable loads with G group GAMMA voltage;

It is the said driving voltage that reference voltage generates that pixel to the N+2 on the said LCD MODULE on capable loads with B group GAMMA voltage; Perhaps, to the N+2 on the said LCD MODULE pixel on capable to load with R group GAMMA voltage be the said driving voltage that reference voltage generates;

Wherein: said N >=1, and be natural number, said N is corresponding with said line synchronizing signal.

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