CN110827769B - Adaptation device and display device - Google Patents

Abstract

The invention relates to an adapting device and a display device, wherein the adapting device comprises: the identification module is used for acquiring LED color temperature block classification information of the backlight assembly; and the control module is connected with the identification module and the time sequence controller and used for outputting a corresponding control signal to the time sequence controller according to the color temperature block classification information so that the time sequence controller can carry out color compensation correction by taking and locking a corresponding RGB gain value and can set the current output to the LED lamp string by outputting a feedback signal to the microcontroller. The invention realizes the consistency of color specification and brightness specification of different batches of products by matching different RGB gain values according to different batches of backlight assemblies and simultaneously adjusting the current output to the LED lamp strings, and also solves the difficulty in putting on production of each part, wherein the different batches of backlight assemblies have the LED lamp strings with different color temperature blocks.

Description

Adaptation device and display device

Technical Field

The invention relates to the technical field of display, in particular to an adaptive device and a display device.

Background

The existing liquid crystal display has the advantages of lightness, thinness, small volume and the like, and also has the advantages of no radiation, low power consumption and relatively low manufacturing cost. The liquid crystal display mainly comprises an array substrate, a color film substrate, a liquid crystal layer clamped between the array substrate and the color film substrate, and a backlight module positioned below the array substrate, wherein an LED lamp string is mostly adopted as a luminous source in the backlight module of the existing liquid crystal display.

Specifically, the major components of the LCD panel include an LCM (display module) and a CTP (glass cover plate), wherein the LCM includes a backlight assembly and an LCD (display panel), and the product specifications (such as chromaticity specification, brightness specification, etc.) of the LCM mainly depend on the optical properties of the backlight assembly and the optical properties of the LCD. The electro-optical characteristics of the LED in the backlight assembly are different due to the characteristics of the Chip (wafer) of the LED and the substances such as the filling phosphor and the like and the difference of the processing technology, and are further divided into different LED ranks (LED color temperature block ranges).

Due to the batch problem of components, there are various categories of LED light strings used in the existing LCM assembly. At present, no matter which color temperature block of the LED is matched with the same version of RGB gain value, the color difference of optical measurement is large, the visual chromatic aberration is obvious, and the consistency is low. In addition, even if different RGB gain values are collocated for LEDs of different color temperature blocks, there are problems of undefined production quantity and large brightness difference of different RGB gains when the backlight assembly and the PCB are produced.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an adapting device and a display device, which achieve the one-to-one correspondence between the color temperature blocks of the LEDs and the RGB gain values, meet the requirement of color specification consistency, and optimize the brightness specification consistency of the product, and further enable each component of the product to be produced according to a normal mode through the adapting device and the display device provided by the present invention.

To achieve the above technical effects, an adaptation apparatus according to an aspect of the present invention includes: the identification module is used for acquiring LED color temperature block classification information of the backlight assembly; and the control module is connected with the identification module and the time sequence controller, outputs corresponding control signals to the time sequence controller according to the LED color temperature block classification information, so that the time sequence controller carries out color compensation correction by taking and locking corresponding RGB gain values, and outputs feedback signals to the microcontroller so as to set the current output to the LED lamp string.

In one embodiment, the identification module is a code scanning module, and the code scanning module is used for identifying a bar code and/or a two-dimensional code located on the backlight assembly.

As one embodiment, the identification module further includes an illumination unit, and the illumination unit is configured to automatically illuminate when the ambient brightness is detected to be less than the preset value.

In order to achieve the above technical effects, another aspect of the present invention is a display device, including: a backlight assembly including an LED color temperature block; the time sequence controller comprises a plurality of registers, and each register stores different RGB gain values; an LED driver; the microcontroller is connected with the time sequence controller and the LED driver and is used for setting the current output to the LED lamp string according to the feedback signal output by the time sequence controller; the time schedule controller is connected with the adaptive device, calls and locks corresponding RGB gain values to perform color compensation correction according to control signals generated by the adaptive device through identifying LED color temperature block classification information of the backlight assembly, and outputs the feedback signals to the microcontroller to perform current setting.

As one embodiment, the backlight assembly is provided with an identification code, and the content of the identification code corresponds to the classification information of the corresponding LED color temperature block.

As one embodiment, the identification code is a bar code and/or a two-dimensional code.

As one embodiment, the microcontroller includes a digital-to-analog converter, and the microcontroller sets the digital-to-analog converter accordingly according to the feedback signal output by the timing controller, so as to change the maximum current output to the LED light string in the backlight assembly.

As an embodiment, the feedback signal output by the timing controller is a pulse width modulation signal, and the microcontroller adjusts a duty ratio of the pulse width modulation signal output to the LED driver according to the feedback signal to change a current output to the LED string in the backlight assembly.

As one embodiment, the display device further includes a connector for connecting the timing controller and the adapting device.

In one embodiment, the LED driver is driven by voltage.

The adaptive device and the display device provided by the invention output corresponding control signals to the time schedule controller according to the classification information of the LED color temperature blocks, so that the time schedule controller performs color compensation correction by calling and locking corresponding RGB gain values, and sets the current output to the LED lamp string by outputting feedback signals to the microcontroller, thereby realizing the one-to-one correspondence of the LED color temperature blocks and the RGB gain values, meeting the requirement of color specification consistency, and simultaneously optimizing the brightness specification consistency of products.

Drawings

Fig. 1 shows a schematic structural diagram of an adapting device according to an embodiment of the present invention.

Fig. 2 is a block diagram of a display device according to an embodiment of the present invention.

Fig. 3 shows a flow chart of an adaptation method of an embodiment of the invention.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purpose, the following detailed description of the embodiments, structures, features and effects of the adapting device and the display device according to the present invention will be made with reference to the accompanying drawings and the preferred embodiments.

The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings. While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and specific embodiments thereof.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an adapting device according to an embodiment of the present invention, and for convenience of description, only the parts related to the embodiment of the present invention are shown. As shown in fig. 1, theadapting device 10 includes anidentification module 101 and acontrol module 102, wherein theidentification module 101 is configured to obtain LED color temperature block classification information of the backlight assembly, thecontrol module 102 is connected to theidentification module 101 and the timing controller, and thecontrol module 102 outputs a corresponding control signal to the Timing Controller (TCON) according to the LED color temperature block classification information obtained by theidentification module 101, so that the timing controller performs color compensation and correction by retrieving and locking corresponding RGB gain values, and simultaneously outputs a feedback signal to a Microcontroller (MCU) to set a circuit output to the LED light string.

The LED color temperature block classification information of the backlight assembly is recorded on the backlight assembly, theidentification module 101 sends the LED color temperature block classification information to thecontrol module 102 after obtaining the LED color temperature block classification information, thecontrol module 102 further outputs corresponding digital signals to be fed back to the time schedule controller for identification, the time schedule controller calls RGB gain values stored in corresponding registers according to the digital signals and locks the RGB gain values, wherein the adjustment of the RGB gain values refers to adjusting the gain values of RGB components through an ACC color adjustment technology to carry out chromaticity consistency adjustment, in addition, the time schedule controller simultaneously outputs feedback signals to the microcontroller while carrying out the chromaticity consistency adjustment, and the current output to the LED lamp string is adjusted to carry out the brightness consistency adjustment.

Specifically, in the present embodiment, G, J, H, K, P, N types of LED color temperature blocks exist, and corresponding to the above six types, in the prior art, the same set of ACC codes, that is, RGB gain values are used for color compensation and correction, which causes very large color difference of optical measurement and inconsistent chromaticity specifications, in the present embodiment, a set of RGB gain values is separately set for the six types of LED color temperature blocks, specifically, in an embodiment, for the G type LED color temperature block, the gain values of RGB three components are respectively 88%, 87% and 100%, for the J type LED color temperature block, the gain values of RGB three components are respectively 90%, 91% and 100%, for the H type LED color temperature block, the gain values of RGB three components are respectively 91%, 92% and 100%, and for the K type LED color temperature block, the gain values of RGB three components are respectively 91%, 93% and 100%, and the gain values of the RGB three components are 91%, 99% and 100% for the P-type LED color temperature blocks, and 93%, 100% and 100% for the N-type LED color temperature blocks, respectively. However, adjusting the RGB gain values to solve the problem of the uniformity of the chromaticity specification results in a larger difference of the brightness specification of the display device, so the current output to the LED string is further adjusted to adjust the brightness uniformity.

In one embodiment, theidentification module 101 is a code scanning module, the LED color temperature block classification information of the backlight assembly is recorded in a bar code and/or a two-dimensional code on the backlight assembly, and the code scanning module acquires the LED color temperature block classification information by identifying the bar code and/or the two-dimensional code on the backlight assembly.

In an embodiment, theidentification module 101 further includes an illumination unit, which automatically illuminates when the ambient brightness is detected to be less than the preset value, so that theidentification module 101 performs code scanning identification.

Theadapting device 10 provided by the embodiment of the invention outputs corresponding control signals to the time sequence controller according to the classification information of the LED color temperature blocks, so that the time sequence controller performs color compensation correction by calling and locking corresponding RGB gain values, and sets the current output to the LED lamp string by outputting feedback signals to the microcontroller, thereby realizing the one-to-one correspondence of the LED color temperature blocks and the RGB gain values, meeting the requirement of color specification consistency, and simultaneously optimizing the brightness specification consistency of products, and theadapting device 10 provided by the invention can also enable the backlight assembly and the time sequence controller (namely a time sequence controller board) to be produced according to a normal mode.

Referring to fig. 1 and fig. 2 in combination, fig. 2 shows a structure of adisplay device 11 according to an embodiment of the invention. As shown in fig. 2, thedisplay device 11 includes a backlight assembly (not shown), a Timing Controller (TCON)110 including a plurality ofregisters 111, eachregister 111 storing a different RGB gain value; anLED driver 130; a Micro Controller Unit (MCU)120 connected to thetiming controller 110 and theLED driver 130, for setting a current output to the LED string according to a feedback signal output from thetiming controller 110; thetiming controller 110 is connected to theadapting device 10, and is configured to call and lock corresponding RGB gain values for color compensation and correction according to control signals generated by theadapting device 10 by recognizing LED color temperature block classification information of the backlight assembly, and output feedback signals to themicrocontroller 120 for current setting.

Thetiming controller 110 is connected to theadapting device 10, and is configured to tune and lock corresponding RGB gain values for color compensation correction according to control signals generated by theadapting device 10 by recognizing LED color temperature block classification information of the backlight assembly, as shown in fig. 2, after tuning and locking the corresponding RGB gain values, thetiming controller 110 provides the corresponding RGB gain values to the data processing unit for color temperature correction, so as to make the color specifications of the liquid crystal display device consistent. However, when the RGB gain values are adjusted to solve the chromaticity specification consistency, the brightness specification difference of the display device is larger, and therefore, in the embodiment, the current output to the LED string is further adjusted by outputting the corresponding feedback signal through thetiming controller 110, so as to adjust the brightness consistency.

In one embodiment, the backlight assembly is provided with an identification code, wherein the content of the identification code corresponds to the classification information of the corresponding LED color temperature blocks.

In one embodiment, the identification code provided on the backlight assembly is a bar code and/or a two-dimensional code.

Specifically, the LED color temperature block classification information is recorded in the bar code and/or the two-dimensional code, and after the backlight assembly passes through the assembling station, the LED color temperature block is corresponding to Run card information, and then theadapting device 10 scans the Run card to identify the LED color temperature block and outputs a corresponding digital signal to the timing controller.

In one embodiment, themicrocontroller 120 includes a digital-to-analog converter, and themicrocontroller 120 sets the digital-to-analog converter accordingly according to the feedback signal output by thetiming controller 110 to change the maximum current output to the LED string in the backlight assembly.

Specifically, when receiving the control signal sent by theadapting device 10, thetiming controller 110 outputs a feedback signal to themicrocontroller 120 when adjusting and locking the corresponding RGB gain values in theregister 110, changes the setting of an IDAC (current digital-to-analog converter) in themicrocontroller 120, and changes the maximum current output to the LED light string, that is, at this time, an analog reference voltage is generated by the digital-to-analog converter, and the reference voltage changes the maximum current output to the LED light string by the LED driver, thereby adjusting the brightness consistency.

In one embodiment, the feedback signal output by thetiming controller 110 is a pwm signal, and themicrocontroller 120 adjusts the duty ratio of the pwm signal output to theLED driver 130 according to the feedback signal to change the current output to the LED string in the backlight assembly.

Specifically, when receiving the control signal sent by theadapting device 10, thetiming controller 110 simultaneously outputs a pulse width modulation signal to themicrocontroller 120 when retrieving and locking the corresponding RGB gain values in theregister 111, themicrocontroller 120 performs the encoding, and then themicrocontroller 120 communicates with theLED driver 130, and changes the current output by theLED driver 130 to the LED string by changing the duty ratio of the pulse width modulation signal output to theLED driver 130, so as to implement the current compensation and further adjust the brightness consistency. Therefore, different RGB gain values exist corresponding to different color temperature blocks, and corresponding current setting exists at the same time, so that the consistency of the display effect of the modules of different color temperature blocks can be met.

In one embodiment, thedisplay device 11 further comprises a connector for connecting thetiming controller 110 and theadapting device 10.

Specifically, theadapter 10 feeds back a corresponding digital signal to thetiming controller 110 for identification through a pin provided in the connector. For example, when theadapter 10 generates digital signals (T1, T2, T3) and transmits the signals to thetiming controller 110 through the connector, after thetiming controller 110 receives the signals, if T1, T2 and T3 are respectively 0, 0 and 1, thetiming controller 110 calls and locks the first RGB gain value, and synchronously outputs three signals F1, F2 and F3 to control the setting of the LED string current.

In one embodiment, the LED driver is voltage driven.

To sum up, in thedisplay device 11 provided in the embodiment of the present invention, thetiming controller 110 calls and locks the corresponding RGB gain values to perform color compensation and correction on the liquid crystal display panel according to the control signal corresponding to the LED color temperature block classification information of the backlight component sent by theadapting device 10, and simultaneously outputs the feedback signal to themicrocontroller 120 to set the current output to the LED light string, so as to implement the one-to-one correspondence between the LED color temperature blocks and the RGB gain values, achieve the requirement of color specification consistency, and optimize the brightness specification consistency of the product, and the backlight component and the timing controller 110 (i.e., the timing controller board) can be produced according to the normal mode through the present invention.

Referring to fig. 3 in conjunction with fig. 1 and fig. 2, fig. 3 shows a flowchart of an adaptation method according to an embodiment of the invention. As shown in fig. 3, the adaptation method of the present embodiment includes, but is not limited to, the following steps:

step S10: therecognition module 101 acquires LED color temperature block classification information of the backlight assembly.

Step S11: thecontrol module 102 outputs a corresponding control signal to thetiming controller 110 according to the LED color temperature block classification information.

Specifically, after theidentification module 101 in theadapting device 10 obtains the LED color temperature block classification information of the backlight assembly, thecontrol module 102 in theadapting device 10 outputs a corresponding control signal to thetiming controller 110 in thedisplay device 11 according to the LED color temperature block classification information. Then, thetiming controller 110 calls and locks the RGB gain values stored in thecorresponding registers 111 according to the control signal, wherein adjusting the RGB gain values refers to adjusting the gain values of the RGB components by ACC color adjustment technology to perform chromaticity consistency adjustment, and in addition, while performing the chromaticity consistency adjustment, thetiming controller 110 also outputs a feedback signal to themicrocontroller 120 connected to theLED driver 130 to adjust the current output to the LED string to perform brightness consistency adjustment.

To sum up, in the adaptation method provided in the embodiment of the present invention, theidentification module 101 obtains the LED color temperature block classification information of the backlight assembly and sends the LED color temperature block classification information to thecontrol module 102, and thecontrol module 102 outputs the corresponding control signal to thetiming controller 110 according to the LED color temperature block classification information. Then, thetiming controller 110 calls and locks the corresponding RGB gain values to the liquid crystal display panel for color compensation and correction according to the control signal corresponding to the LED color temperature block classification information of the backlight assembly sent by theadapting device 10, and simultaneously outputs a feedback signal to themicrocontroller 120 to set the current output to the LED light string, so as to realize the one-to-one correspondence between the LED color temperature blocks and the RGB gain values, meet the requirement of color specification consistency, and simultaneously optimize the brightness specification consistency of the product, and the backlight assembly and the timing controller 110 (i.e., the timing controller board) can be produced according to a normal mode through the invention.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.

Claims (8)

1. An adapting device, characterized in that the adapting device comprises:

the identification module is used for acquiring LED color temperature block classification information of the backlight assembly, wherein the LED color temperature block classification information is obtained by identifying a bar code and/or a two-dimensional code on the backlight assembly through the identification module;

and the control module is connected with the identification module and the time sequence controller, outputs corresponding control signals to the time sequence controller according to the LED color temperature block classification information so that the time sequence controller performs color compensation correction by taking and locking corresponding RGB gain values, and outputs feedback signals to the microcontroller so as to set the current output to the LED lamp string so that the chromaticity and the brightness of the display device with different LED color temperature blocks are consistent.

2. The adapting device according to claim 1, wherein the identification module is a code scanning module for identifying a barcode and/or a two-dimensional code located on the backlight assembly.

3. An adapting device according to claim 1, wherein the identification module further comprises a lighting unit that automatically illuminates when it is detected that the ambient brightness is less than a preset value.

4. A display device, comprising:

the backlight assembly comprises an LED color temperature block, wherein a bar code and/or a two-dimensional code are also arranged on the backlight assembly, and the content of the bar code and/or the two-dimensional code corresponds to the classification information of the corresponding LED color temperature block;

the time sequence controller comprises a plurality of registers, and each register stores different RGB gain values;

an LED driver;

the microcontroller is connected with the time sequence controller and the LED driver and is used for setting the current output to the LED lamp string according to the feedback signal output by the time sequence controller;

the time schedule controller is connected with the adaptive device, corresponding RGB gain values are called and locked for color compensation correction according to control signals generated by the adaptive device through identifying LED color temperature block classification information of the backlight assembly, and current setting is carried out by outputting the feedback signals to the microcontroller so that the chromaticity and the brightness of the display device with different LED color temperature blocks are consistent;

wherein the adapting device identifies the LED color temperature block classification information of the backlight assembly by identifying the bar code and/or the two-dimensional code on the backlight assembly.

5. The display device according to claim 4, wherein the microcontroller comprises a digital-to-analog converter, and the microcontroller sets the digital-to-analog converter accordingly according to the feedback signal output by the timing controller to change the maximum current output to the LED light string in the backlight assembly.

6. The display device according to claim 4, wherein the feedback signal outputted from the timing controller is a pulse width modulation signal, and the microcontroller adjusts a duty ratio of the pulse width modulation signal outputted to the LED driver according to the feedback signal to change a current outputted to the LED string of the backlight assembly.

7. The display device according to claim 4, further comprising a connector connecting the timing controller and the adapting means.

8. The display device according to claim 4, wherein the LED driver is voltage-driven.

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