LCD panel optical performance adjusting method and system, electronic equipment and storage medium

Abstract

The invention relates to an LCD panel optical performance adjusting method and system, electronic equipment and a storage medium. The method for adjusting the optical performance of the LCD panel comprises the steps that a TCON board drives a panel to display a full-gray-scale preset test picture so as to obtain optical data of the preset test picture; converting the optical data to obtain a real-time gamma curve; the TCON board judges whether the real-time gamma curve and the ideal gamma curve have deviation or not, if yes, the value of a gamma voltage register of a gamma chip located on the TCON board is adjusted, and a normal display picture is output. According to the scheme provided by the invention, optical sensing, data analysis and voltage regulation functions can be integrated in the TCON, the system structure is simplified, and the dependence on external expensive instruments is reduced.

Description

Technical Field

[0001] This invention relates to the field of LCD module technology, and in particular to a method, system, electronic device, and storage medium for adjusting the optical performance of an LCD panel. Background Technology

[0002] In related technologies, during the LCD panel manufacturing process, precise gamma calibration typically relies on independent automated gamma calibration machines or optical measuring instruments. The standard procedure is as follows: the optical instrument measures the screen's optical performance, sends the data to an external computer for analysis, generates calibration parameters or gamma codes, and then writes them into the panel's flash memory via an interface such as SPI. When the panel is powered on, the TCON reads these preset gamma codes from the flash memory and loads them into the driver chip.

[0003] However, the above methods rely too heavily on automatic gamma calibration machines or optical measuring instruments, which are costly. Furthermore, the complex electrical environment during LCD panel manufacturing may interfere with the communication between the TCON and the flash memory, leading to errors in the loaded gamma code and causing defective products to be released. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method, system, electronic device and storage medium for adjusting the optical performance of an LCD panel, which can integrate optical sensing, data analysis and voltage adjustment functions into the TCON, simplifying the system structure and reducing dependence on expensive external instruments.

[0005] The objective of this invention is achieved through the following technical solution: The first aspect of this application provides a method for adjusting the optical performance of an LCD panel, comprising: a TCON board driving the panel to display a preset test image of full grayscale to obtain optical data of the preset test image; converting and processing the optical data to obtain a real-time gamma curve; the TCON board will determine whether there is a deviation between the real-time gamma curve and the ideal gamma curve, and if so, adjusting the gamma voltage register value of the gamma chip located on the TCON board to output a normal display image.

[0006] The adjustment of the gamma voltage register value of the gamma chip located on the TCON board includes: the gamma chip located on the TCN board provides a plurality of programmable voltage nodes; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node.

[0007] The step of converting and processing the optical data to obtain a real-time gamma curve includes: acquiring brightness measurement values ​​of several gray levels of the optical data, and fitting the brightness measurement values ​​of each gray level into the real-time gamma curve.

[0008] The TCON board will determine whether there is a deviation between the real-time gamma curve and the ideal gamma curve by: calculating the root mean square error or average deviation of the real-time gamma curve; calculating the standard root mean square error or standard average deviation of the ideal gamma curve; and determining whether the root mean square error deviates from the standard root mean square error, or determining whether the average deviation deviates from the standard average deviation.

[0009] A second aspect of this application provides an optical performance adjustment system for an LCD panel, comprising: an initialization module for driving a TCON board to display a preset full-grayscale test image on the panel to obtain optical data from the preset test image; a calculation module for converting and processing the optical data to obtain a real-time gamma curve; and a comparison module for the TCON board to determine whether there is a deviation between the real-time gamma curve and the ideal gamma curve, and if so, adjusting the gamma voltage register value of the gamma chip located on the TCON board to output a normal display image.

[0010] The comparison module includes an adjustment unit, which is used to provide a plurality of programmable voltage nodes to the gamma chip located on the TCN board; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node.

[0011] The calculation module is also used to acquire brightness measurement values ​​of several gray levels of the optical data, and fit the brightness measurement values ​​of each gray level into the real-time gamma curve.

[0012] The comparison module further includes an analysis unit, which is used to calculate the root mean square error or average deviation of the real-time gamma curve; calculate the standard root mean square error or standard average deviation of the ideal gamma curve; and determine whether the root mean square error deviates from the standard root mean square error, or whether the average deviation deviates from the standard average deviation.

[0013] A third aspect of this application provides an electronic device, comprising: Processor; and A memory that stores executable code, which, when executed by the processor, causes the processor to perform the method described above.

[0014] A fourth aspect of this application provides a computer-readable storage medium having executable code stored thereon, which, when executed by a processor of an electronic device, causes the processor to perform the method described above.

[0015] Compared with the prior art, the present invention has at least the following advantages: This application simplifies the system architecture and reduces reliance on expensive external instruments by integrating optical sensing, data analysis, and voltage regulation functions into the TCON, thereby helping to save production costs and improve reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below.

[0017] Figure 1 This is a flowchart of a method for adjusting the optical performance of an LCD panel according to an embodiment of the present invention; Figure 2 This is a flowchart of another embodiment of the LCD panel optical performance adjustment method according to one embodiment of the present invention; Figure 3 This is a functional block diagram of an LCD panel optical performance adjustment system according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0018] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0019] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] Currently, in the LCD panel manufacturing process, accurate gamma calibration generally relies on independent automated gamma calibration machines or optical measuring instruments. The standard procedure is as follows: the optical instrument measures the screen's optical performance, sends the data to an external computer for analysis, generates calibration parameters or gamma codes, and then writes them into the panel's flash memory via an interface such as SPI. When the panel is powered on, the TCON reads these preset gamma codes from the flash memory and loads them into the driver chip. However, this method relies excessively on automated gamma calibration machines or optical measuring instruments, resulting in high costs. Furthermore, the complex electrical environment during LCD panel manufacturing can interfere with the communication between the TCON and the flash memory, leading to incorrect loaded gamma codes and causing defective products to be released.

[0022] To address the aforementioned issues, this application provides a method, system, electronic device, and storage medium for adjusting the optical performance of an LCD panel. This method integrates optical sensing, data analysis, and voltage adjustment functions into a TCON, simplifying the system structure, reducing reliance on expensive external instruments, and helping to save production costs and improve reliability.

[0023] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic flowchart illustrating a method for adjusting the optical performance of an LCD panel according to an embodiment of this application.

[0025] See Figure 1 A method for adjusting the optical performance of an LCD panel, comprising: Step S101: The TCON board driver panel displays a full grayscale preset test screen to obtain the optical data of the preset test screen.

[0026] It should be noted that, firstly, a high-precision optical measuring instrument, such as an imaging colorimeter, is connected to the display system. This connection can be a physical interface such as I2C / SPI, or a dedicated communication interface reserved by the system. After the connection is complete, the host sends a specific command to activate the intelligent gamma correction function built into the TCON board. Then, upon receiving the activation command, the TCON board first controls the LCD panel to display a set of preset test images covering the entire grayscale, for example, multiple grayscale images from 0 to 255. Immediately afterwards, the optical instrument precisely measures the brightness and chromaticity data of specific areas or pixels on the screen.

[0027] Step S102: Convert and process the optical data to obtain the real-time gamma curve; It should be noted that these optical data are converted into digital signals at high speed, and real-time gamma curves are obtained. These curves are then fed back directly to the TCON board through the previously established communication path, forming a closed-loop feedback.

[0028] In step S103, the TCON board will determine whether there is a deviation between the real-time gamma curve and the ideal gamma curve. If so, it will adjust the gamma voltage register value of the gamma chip on the TCON board and output a normal display screen.

[0029] It should be noted that the pre-installed or real-time gamma analysis algorithm within the TCON board begins operation. This algorithm compares the received real-time gamma curve with the ideal Gamma 2.2 curve, quickly calculating the deviation between the current display effect and the target value. If a deviation exists, the TCON board directly modifies the gamma voltage register value in the programmable gamma chip via the control bus, thereby changing the actual voltage applied to the liquid crystal pixels. The normal display image is output only after all liquid crystal pixels have been adjusted.

[0030] Figure 2 for Figure 1 A more detailed embodiment of an LCD panel optical performance adjustment method further includes: Step S201: The TCON board driver panel displays a full grayscale preset test screen to obtain the optical data of the preset test screen.

[0031] The description of this step can be found in step S101, and will not be repeated here.

[0032] Step S202: Obtain brightness measurement values ​​of several gray levels of optical data, and fit the brightness measurement values ​​of each gray level into a real-time gamma curve.

[0033] It should be noted that the optical data mainly includes the brightness and chromaticity data of specific areas or pixels on the screen, precisely measured by optical instruments. The TCON board will collect these brightness and chromaticity data at different gray levels. Subsequently, these discrete measurement points are fitted into an actual photoelectric characteristic curve, namely the real-time gamma curve.

[0034] Step S203: Calculate the root mean square error or average deviation of the real-time gamma curve; calculate the standard root mean square error or standard average deviation of the ideal gamma curve; determine whether the root mean square error deviates from the standard root mean square error, or whether the average deviation deviates from the standard average deviation. If so, the gamma chip on the TCN board provides several programmable voltage nodes; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node, thereby outputting a normal display screen.

[0035] It should be noted that the TCON board compares the fitted actual gamma curve with the ideal gamma curve. It quantifies the difference between the current state and the target by calculating the root mean square error or average deviation. Based on the calculated difference, a set of specific, quantified voltage adjustment commands are generated, specifying how many millivolts each adjustable voltage node needs to increase or decrease. After adjustment, a normal display screen is output.

[0036] Corresponding to the aforementioned application function implementation method embodiments, this application also provides an LCD panel optical performance adjustment system, electronic device, and corresponding embodiments.

[0037] Figure 3 This is a functional block diagram of the LCD panel optical performance adjustment system shown in the embodiments of this application.

[0038] See Figure 3 An optical performance adjustment system for an LCD panel includes an initialization module 100, a calculation module 200, and a comparison module 300. The initialization module 100 is used by the TCON board to drive the panel to display a preset full grayscale test image to obtain optical data of the preset test image. The calculation module 200 is used to convert and process the optical data to obtain a real-time gamma curve. The comparison module 300 is used by the TCON board to determine whether there is a deviation between the real-time gamma curve and the ideal gamma curve. If so, the gamma voltage register value of the gamma chip located on the TCON board is adjusted to output a normal display image.

[0039] See Figure 3 In one embodiment, the comparison module 300 includes an adjustment unit for providing a plurality of programmable voltage nodes to the gamma chip located on the TCN board; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node.

[0040] See Figure 3 In one embodiment, the calculation module 200 is further configured to acquire brightness measurement values ​​of several gray levels of optical data and fit the brightness measurement values ​​of each gray level into a real-time gamma curve.

[0041] See Figure 3 In one embodiment, the comparison module 300 further includes an analysis unit, which is used to calculate the root mean square error or average deviation of the real-time gamma curve; calculate the standard root mean square error or standard average deviation of the ideal gamma curve; and determine whether the root mean square error deviates from the standard root mean square error, or whether the average deviation deviates from the standard average deviation.

[0042] Regarding the system in the above embodiments, the specific ways in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated further here.

[0043] Figure 4 This is a schematic diagram of the structure of an electronic device shown in an embodiment of this application.

[0044] See Figure 4 The electronic device 1000 includes a memory 1010 and a processor 1020.

[0045] The processor 1020 can be a central processing unit (CPU), or it can be an integrated circuit composed of other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be any conventional processor that can run the Linux kernel.

[0046] Memory 1010 may include various types of storage units, such as system memory, read-only memory (ROM), and permanent storage devices. ROM may store static data or instructions required by processor 1020 or other modules of the computer. Permanent storage devices may be read-write storage devices. Permanent storage devices may be non-volatile storage devices that retain stored instructions and data even when the computer is powered off. In some embodiments, permanent storage devices use mass storage devices (e.g., magnetic or optical disks, flash memory) as permanent storage devices. In other embodiments, permanent storage devices may be removable storage devices (e.g., floppy disks, optical drives). System memory may be a read-write storage device or a volatile read-write storage device, such as dynamic random access memory. System memory may store some or all of the instructions and data required by the processor during operation. Furthermore, memory 1010 may include any combination of computer-readable storage media, including various types of semiconductor memory chips (e.g., DRAM, SRAM, SDRAM, flash memory, programmable read-only memory), and disks and / or optical disks may also be used. In some embodiments, the memory 1010 may include a removable storage device that is readable and / or writable, such as a laser disc (CD), a read-only digital multifunction optical disc (e.g., DVD-ROM, dual-layer DVD-ROM), a read-only Blu-ray disc, an ultra-high density optical disc, a flash memory card (e.g., SD card, minSD card, Micro-SD card, etc.), a magnetic floppy disk, etc. Computer-readable storage media do not contain carrier waves or transient electronic signals transmitted wirelessly or via wired connections.

[0047] The memory 1010 stores executable code, which, when processed by the processor 1020, can cause the processor 1020 to execute part or all of the methods described above.

[0048] Furthermore, the method according to this application can also be implemented as a computer program or computer program product, which includes computer program code instructions for performing some or all of the steps in the method described above.

[0049] Alternatively, this application may be implemented as a computer-readable storage medium (or a non-transitory machine-readable storage medium or a machine-readable storage medium) storing executable code (or computer program or computer instruction code) thereon, which, when executed by a processor of an electronic device (or server, etc.), causes the processor to perform part or all of the steps of the methods described above according to this application.

[0050] The solution of this application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to this application. Furthermore, it is understood that the steps in the method of this application embodiment can be adjusted, combined, and deleted according to actual needs, and the modules in the device of this application embodiment can be combined, divided, and deleted according to actual needs. The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A method of adjusting optical performance of an LCD panel, characterized by, The method comprises the following steps: a TCON board drives a panel to display a full gray scale preset test picture to obtain optical data of the preset test picture; the optical data is converted to obtain a real-time gamma curve; the TCON board judges whether there is a deviation between the real-time gamma curve and an ideal gamma curve, and if so, adjusts a gamma voltage register value of a gamma chip located on the TCON board to output a normal display picture.

2. The method of claim 1, wherein the LCD panel is a transmissive LCD panel. The adjustment of the gamma voltage register value of the gamma chip located on the TCON board comprises: the gamma chip located on the TCON board provides a plurality of programmable voltage nodes; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node.

3. The method of claim 2, wherein the LCD panel is a transmissive LCD panel. The conversion of the optical data to obtain the real-time gamma curve comprises: obtaining luminance measurement values of a plurality of gray scales of the optical data, and fitting the luminance measurement values of each gray scale into the real-time gamma curve.

4. The method of claim 3, wherein the LCD panel is a transmissive LCD panel. The method for the TCON board to judge whether there is a deviation between the real-time gamma curve and the ideal gamma curve comprises: calculating a root mean square error or an average deviation of the real-time gamma curve; calculating a standard root mean square error or a standard average deviation of the ideal gamma curve; judging whether there is a deviation between the root mean square error and the standard root mean square error, or judging whether there is a deviation between the average deviation and the standard average deviation.

5. An LCD panel optical performance adjustment system, characterized by, The method comprises the following steps: an initialization module is configured to drive a TCON board to display a full gray scale preset test picture to obtain optical data of the preset test picture; a calculation module is configured to convert the optical data to obtain a real-time gamma curve; a comparison module is configured to judge whether there is a deviation between the real-time gamma curve and an ideal gamma curve by the TCON board, and if so, adjust a gamma voltage register value of a gamma chip located on the TCON board to output a normal display picture.

6. The LCD panel optical performance adjustment system of claim 5, wherein, The comparison module comprises an adjusting unit configured to provide a plurality of programmable voltage nodes by the gamma chip located on the TCON board; the TCON board adjusts the gamma voltage register value of the gamma chip to set the voltage of each programmable voltage node.

7. The LCD panel optical performance adjustment system of claim 6, wherein, The calculation module is further configured to obtain luminance measurement values of a plurality of gray scales of the optical data, and fit the luminance measurement values of each gray scale into the real-time gamma curve.

8. The LCD panel optical performance adjustment system of claim 7, wherein, The comparison module further comprises an analysis unit configured to calculate a root mean square error or an average deviation of the real-time gamma curve; calculate a standard root mean square error or a standard average deviation of the ideal gamma curve; judge whether there is a deviation between the root mean square error and the standard root mean square error, or judge whether there is a deviation between the average deviation and the standard average deviation.

9. An electronic device, comprising: The method comprises the following steps: a processor; and a memory having executable code stored thereon, which, when executed by the processor, causes the processor to execute the method of any one of claims 1-4.

10. A computer-readable storage medium having stored thereon executable code that, when executed by a processor of an electronic device, causes the processor to perform the method of any of claims 1-4.

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