CN102087818A - Liquid crystal display system - Google Patents
Liquid crystal display systemDownload PDFInfo
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- CN102087818A CN102087818ACN2010101507528ACN201010150752ACN102087818ACN 102087818 ACN102087818 ACN 102087818ACN 2010101507528 ACN2010101507528 ACN 2010101507528ACN 201010150752 ACN201010150752 ACN 201010150752ACN 102087818 ACN102087818 ACN 102087818A
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- 239000004973liquid crystal related substanceSubstances0.000titleclaimsabstractdescription66
- 238000012545processingMethods0.000claimsabstractdescription37
- 230000005540biological transmissionEffects0.000claimsdescription12
- 230000005142aphototropismEffects0.000claimsdescription4
- 238000000034methodMethods0.000abstractdescription10
- 230000008569processEffects0.000abstractdescription3
- 238000010586diagramMethods0.000description10
- 230000014509gene expressionEffects0.000description10
- 230000008859changeEffects0.000description3
- 230000021715photosynthesis, light harvestingEffects0.000description3
- 230000008901benefitEffects0.000description1
- 238000011161developmentMethods0.000description1
- 238000005516engineering processMethods0.000description1
- 238000005286illuminationMethods0.000description1
- 230000006872improvementEffects0.000description1
- 238000012986modificationMethods0.000description1
- 230000004048modificationEffects0.000description1
- 238000012797qualificationMethods0.000description1
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract
Description
Technical field
The present invention relates to a kind of liquid crystal display systems.
Background technology
Along with the development of display technique, LCD has substituted traditional CRT monitor fully, is widely used in televisor, graphoscope, monitor, mobile phone and other need carry out the portable electric appts that image shows.
LCD mainly comprises image processing control unit, liquid crystal panel, processing and control element (PCE) backlight and module backlight, the image data transmission that image processing control unit is used for needs are shown is to liquid crystal panel, processing and control element (PCE) backlight then drives the light source in the module backlight, traditional liquid crystal display systems (for example LCD TV), when carrying out the image demonstration, no matter be with full frame or local being presented on the liquid crystal panel of image, light source in its module backlight is all opened, difference only is, for the image of local repressentation on liquid crystal panel, need with other position display black or other background colour.Like this, when the user only needed liquid crystal panel to carry out local repressentation, the above-mentioned mode that whole light sources are opened obviously can cause the very big energy dissipation of energy dissipation.
In addition, have the portable equipment of liquid crystal display systems for other, for example mobile phone, MP4, PDA etc., light source that also will entire aphototropism mould when showing the lyrics or radio state all drives.
Summary of the invention
The object of the present invention is to provide a kind of liquid crystal display systems,, reduce power consumption and avoid energy dissipation according to light source corresponding in the size of viewing area and the position Real Time Drive module backlight.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of liquid crystal display systems, comprise: control module, image processing control unit, liquid crystal panel, processing and control element (PCE) backlight and module backlight, described module backlight comprises some light sources, it is characterized in that: described control module is used to set the display parameter of described image processing control unit, and send corresponding backlight module driving parameters to described processing and control element (PCE) backlight, described image processing control unit is used for the display parameter according to the control module transmission, corresponding image data transmission corresponding display to the liquid crystal panel is shown described processing and control element (PCE) backlight is used for the driving parameters that sends according to control module the light source of module backlight is driven.
Described liquid crystal display systems, wherein, described display parameter comprise the size and the location parameter of at least one viewing area.
Described liquid crystal display systems, wherein, described display parameter comprise the size and the location parameter of a plurality of viewing areas.
Described liquid crystal display systems, wherein, described processing and control element (PCE) backlight drives the light source in the module backlight according to the driving parameters that control module sends, and the light source that is shown the zone covering is opened, and closed other light source.
Described liquid crystal display systems, wherein, described module backlight comprises along a some fluorescent tube to arrangement.
Described liquid crystal display systems, wherein, described control module produces the driving parameters of module backlight according to the corresponding relation of viewing area and fluorescent tube, opens the fluorescent tube that the viewing area covers and closes other fluorescent tube.
Described liquid crystal display systems, wherein, described module backlight is a down straight aphototropism mode set, its follow to the field to being divided into some light source subregions.
Described liquid crystal display systems, wherein, the light source subregion that described control module covers according to the viewing area produces the driving parameters of module backlight, opens the light source subregion of viewing area covering and closes other light source subregion.
Described liquid crystal display systems, wherein, described each light source subregion includes at least one light source.
Described liquid crystal display systems, wherein, described module backlight is the side entrance back module.
Described liquid crystal display systems, wherein, the position of described viewing area is near the liquid crystal panel edge.
Described liquid crystal display systems, wherein, the position of described viewing area is positioned at the liquid crystal panel drift angle.
Liquid crystal display systems provided by the invention by the size of control module control viewing area and the position in liquid crystal panel thereof, and by closing the light source that is not shown the zone covering in the module backlight, has reduced the power consumption in the image display process.
Description of drawings
Fig. 1 is the process flow diagram of method for displaying image of the present invention;
Fig. 2 is the coordinate synoptic diagram of screen in embodiment of method for displaying image of the present invention;
Fig. 3 is the subregion synoptic diagram of module backlight in embodiment of method for displaying image of the present invention;
Fig. 4 is the structured flowchart of liquid crystal display systems better embodiment of the present invention;
Fig. 5 is the liquid crystal panel synoptic diagram of liquid crystal display systems better embodiment of the present invention;
Fig. 6 is the distribution of light sources synoptic diagram of first kind of module backlight of liquid crystal display systems of the present invention;
Fig. 7 is the light source subregion synoptic diagram of second kind of module backlight of liquid crystal display systems of the present invention;
Fig. 8 is the distribution of light sources synoptic diagram of the third module backlight of liquid crystal display systems of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to figure 1, method for displaying image provided by the invention comprises step: S1, the viewing area configuration parameter is set, described viewing area configuration parameter comprises the size of viewing area and the driving parameters of location parameter and module backlight; S2, the correspondence position of image data transmission to screen shown, drive light source in the module backlight according to the driving parameters of module backlight simultaneously according to the size and the location parameter of viewing area.
Below enumerating different embodiments is described in detail the method for displaying image that the present invention proposes:
In an embodiment of the invention, described step S1 specifically comprises: size and location parameter that the viewing area is set according to screen size, for example (x, y, Δ x, Δ y), wherein x represents the X-axis coordinate (row-coordinate) in the rectangular display area upper left corner, and y represents the Y-axis coordinate (coordinate) in the rectangular regional upper left corner that shows, and Δ x represents the viewing area length upwards of being expert at, Δ y represents the rectangular zone that the shows length that makes progress on the scene, and unit is a pixel count; According to the distribution situation of the light source in the module backlight the driving parameters of module backlight is set, and for example (a1, a2...an), wherein a1 to an represents the driving condition oflight source 1 to n in the module backlight respectively, can represent that 0 expression is closed with 0 and 1, and 1 expression is opened.Described step S2 specifically comprises: size and location parameter according to the viewing area are handled raw image data, the size of raw frames is dwindled or is amplified and limit the display position of image, image data transmission after will handling then shows to screen, wherein, view data comprises vedio data and menu image data etc.; Simultaneously drive light source in the module backlight, open and the pairing light source of the display position of image, the light source of closing other position in the screen according to the driving parameters of module backlight.
With reference to figure 2, in the present embodiment, the pixel count of described screen is 480*640, the definition of coordinate as shown in the figure, initial point is defined in the upper left corner ofscreen 20, and the size ofviewing area 22 and location parameter are (50,60,300,200), the upper left corner row-coordinate of 50 expression viewing areas, the field coordinate in the upper left corner of 60 expression viewing areas, the row of 300 expression viewing areas is to length, and the field of 200 expression viewing areas is to length.Continuation is with reference to figure 3, and describedmodule 30 backlight is divided into 20 light source subregions according to the distribution of light source, theviewing area 22 among the figure in the dotted portion corresponding diagram 2, this moment, module driving parameters backlight should be (1,1,1,0,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0) light source in the expressionlight source subregion
As other embodiment of the present invention, also can be in the following ways when the size of described viewing area and location parameter are provided with: 1, adopt the mode of describing four angular coordinates to define the viewing area; 2, change the coordinate system definition, the position of initial point can change, and the unit of parameter also can change; 3, the viewing area can be geometric configuratioies such as circle, rhombus, and for example circular viewing area then only need be provided with central coordinate of circle and radius, can define the size and the position of viewing area.When being provided with, the driving parameters to described module backlight also can adopt other parameter expression mode, to the controlled variable of each light source is not simple 0 and 1 control opening and closing yet, but luminance state is set by in 0 to 255, carrying out value, the size of numerical value has been represented the brightness degree of light source, wherein 0 expression is closed, and 255 expressions are the brightest.
As other embodiment of the present invention, at dissimilar modules backlight, also can carry out the light source subregion to module backlight earlier, select the size and the position of a more suitable viewing area again according to the light source subregion situation of module backlight, and then the size and the location parameter of setting viewing area, produce corresponding backlight module driving parameters at last, for example for CCFL module backlight, the size of viewing area initiatively can be limited in the illumination zone of a CCFL fluorescent tube, carry out the demonstration of the lyrics or menu.
Below only to existing the situation of a viewing area to be described in the screen, as other embodiment of the present invention, also can be by the size and the location parameter of many groups viewing area are set, diverse location in screen is divided a plurality of viewing areas, and drive the light source that is covered by all viewing areas, thereby finish the function that many pictures show simultaneously.In addition, above-mentioned parameter can pre-set, and also can be before image shows or is provided with in real time by the user in the procedure for displaying, can also be to original parameter adjustment to be set in real time by the user again after setting in advance.
With reference to figure 4, liquid crystal display systems provided by the invention comprises:control module 10, imageprocessing control unit 12, LCD panel (liquid crystal panel) 14, processing and control element (PCE)backlight 16 andmodule backlight 18, describedcontrol module 10 is used to control the display parameter of imageprocessing control unit 12, described display parameter comprise the size and the location parameter of viewing area, describedcontrol module 10 also is used to control described processing and control element (PCE)backlight 16, determines the driving parameters of light source in themodule 18 backlight; Described imageprocessing control unit 12 is used for the display parameter according tocontrol module 10 transmissions, and corresponding image data transmission is shown toliquid crystal panel 14; Described processing and control element (PCE)backlight 16 is used for the display parameter according tocontrol module 10 transmissions, and the light source in themodule 18 backlight is driven; Describedmodule backlight 18 comprises some light sources.
The principle of work of below enumerating the liquid crystal display systems that different embodiments propose the present invention is described in detail:
With reference to figure 5, in first embodiment of the present invention, describedcontrol module 10 is handled view data according to display parameter, the display position that the size of raw frames is dwindled or amplified and limit image according to the size and the location parameter of viewing area, image data transmission after will handling then is to imageprocessing control unit 12, display parameter by imageprocessing control unit 12 sends according tocontrol module 10 are presented on corresponding image data transmission in theviewing area 142 with picture toliquid crystal panel 14.
Continuation is with reference to figure 6, in the present embodiment, describedmodule backlight 18 comprises 7 CCFL fluorescent tube 182a～182g of homeotropic alignment, be pairing position onmodule 18 backlight,viewing area 142 among the figure shown in the dotted line, it has covered fluorescent tube 182c～182e, and at this moment, described processing and control element (PCE) 16 backlight is opened fluorescent tube 182c～182e according to the driving parameters thatcontrol module 10 sends, close fluorescent tube 182a, 182b, 182f and 182g, thereby reduce power consumption.
With reference to figure 7, it is the subregion synoptic diagram ofmodule 18 backlight in liquid crystal display systems second embodiment of the present invention, describedmodule backlight 18 is a down straight aphototropism mode set, its according to distribution of light sources follow to the field to being divided into 84 light source subregions, if this moment in the viewing area in theliquid crystal panel 14 still as first embodiment, pairing position is as shown in phantom in FIG. onbacklight module 18 for it, at this moment, described processing and control element (PCE)backlight 16 is openedlight source subregion 28～33 according to the driving parameters thatcontrol module 10 sends, 40～45 and 52～57, the light source subregion of closing other is to reduce power consumption, wherein in each light source subregion a light source can only be arranged, also can be one group of light source.
With reference to figure 8, it is the subregion synoptic diagram ofmodule 18 backlight in liquid crystal display systems the 3rd embodiment of the present invention, describedmodule backlight 18 is the side entrance back module, itslight source 186a～1861 are uniformly distributed in four limits ofmodule 18 backlight, in the present embodiment, in order better to reduce power consumption, need carry out additional limits to the position ofviewing area 142, the position limit that is about to viewingarea 142 is inliquid crystal panel 14 submarginal positions, four corner positions for example, as shown in the figure, describedcontrol module 10 is by changing display parameter,viewing area 142 is arranged at the upper left corner ofliquid crystal panel 14, at this moment, described processing and control element (PCE)backlight 16 only need be openedlight source 186a according to the driving parameters thatcontrol module 10 sends, 186b and 1861 can finish back lighting, thereby better reduces power consumption.
In above embodiment, described imageprocessing control unit 12 and processing and control element (PCE)backlight 16 can be independent logical device or circuit, also can be integrated in thecontrol module 10, carry out associative operation by related circuit in thecontrol module 10 or functional module.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. liquid crystal display systems, comprise: control module, image processing control unit, liquid crystal panel, processing and control element (PCE) backlight and module backlight, described module backlight comprises some light sources, it is characterized in that: described control module is used to set the display parameter of described image processing control unit, and send corresponding backlight module driving parameters to described processing and control element (PCE) backlight, described image processing control unit is used for the display parameter according to the control module transmission, corresponding image data transmission corresponding display to the liquid crystal panel is shown described processing and control element (PCE) backlight is used for the driving parameters that sends according to control module the light source of module backlight is driven.
2. liquid crystal display systems according to claim 1 is characterized in that: described display parameter comprise the size and the location parameter of at least one viewing area.
3. liquid crystal display systems according to claim 1 is characterized in that: described display parameter comprise the size and the location parameter of a plurality of viewing areas.
4. according to claim 2 or 3 described liquid crystal display systemss, it is characterized in that: described processing and control element (PCE) backlight drives the light source in the module backlight according to the driving parameters that control module sends, the light source that is shown the zone covering is opened, and closed other light source.
5. liquid crystal display systems according to claim 1 is characterized in that: described module backlight comprises along a some fluorescent tube to arrangement.
6. liquid crystal display systems according to claim 5 is characterized in that: described control module produces the driving parameters of module backlight according to the corresponding relation of viewing area and fluorescent tube, opens the fluorescent tube that the viewing area covers and closes other fluorescent tube.
7. liquid crystal display systems according to claim 1 is characterized in that: described module backlight is a down straight aphototropism mode set, its follow to the field to being divided into some light source subregions.
8. liquid crystal display systems according to claim 7 is characterized in that: the light source subregion that described control module covers according to the viewing area produces the driving parameters of module backlight, opens the light source subregion of viewing area covering and closes other light source subregion.
9. liquid crystal display systems according to claim 7 is characterized in that: described each light source subregion includes at least one light source.
10. liquid crystal display systems according to claim 1 is characterized in that: described module backlight is the side entrance back module.
11. liquid crystal display systems according to claim 10 is characterized in that: the position of described viewing area is near the liquid crystal panel edge.
12. liquid crystal display systems according to claim 11 is characterized in that: the position of described viewing area is positioned at the liquid crystal panel drift angle.
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| CN2010101507528ACN102087818A (en) | 2010-04-13 | 2010-04-13 | Liquid crystal display system |
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| CN2010101507528ACN102087818A (en) | 2010-04-13 | 2010-04-13 | Liquid crystal display system |
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| CN102087818Atrue CN102087818A (en) | 2011-06-08 |
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