Liquid crystal panel driving method, device, display apparatus, and storage medium

Abstract

The application relates to a liquid crystal panel driving method applied to a system-level chip, wherein the system-level chip is connected with an integrated logic board through a first preset interface, the system-level chip is connected with a flash memory corresponding to each liquid crystal panel through a second preset interface of the integrated logic board, and the method comprises the following steps: for each liquid crystal panel, reading a standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board; for each driving voltage, converting the corresponding standard register value into a target register value corresponding to the integrated logic board; writing the target register value into the integrated logic board through the first preset interface; and controlling the integrated logic board to output the driving voltage corresponding to the target register value to the liquid crystal panel to drive the liquid crystal panel. Thus, the corresponding standard driving voltage can be matched for each liquid crystal panel in the TCON-less board, so that the stability of a display picture of the liquid crystal panel and the picture quality effect are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid crystal panels, and in particular to a liquid crystal panel driving method and device, a display device, and a storage medium. BACKGROUND

[0002] With the increasingly fierce competition in the television industry, cost reduction has become an important content of television product development. Developing TCON-less products is an important measure for television product cost reduction, and is an important trend in product development of system manufacturers in recent years. The so-called TCON-less is mainly to remove the TCON board of the panel manufacturer. The system manufacturer develops a TCON-less board that is suitable for a specific panel according to the specifications of the liquid crystal panel of the panel manufacturer, to light up the liquid crystal panel provided by the panel manufacturer to the system manufacturer.

[0003] At present, in order to avoid process fluctuations and cause differences in picture quality, when developing a TCON-less board, it is necessary to match the Gamma (gray scale voltage) parameter and / or VCOM (common electrode voltage) parameter for each liquid crystal panel. The Gamma parameter can ensure the picture quality displayed by the liquid crystal panel, and the VCOM parameter can ensure that the picture displayed by the liquid crystal panel does not flicker. In the prior art, when developing a TCON-less board, a uniform VCOM value and a set of Gamma voltage values are generally set for the liquid crystal panel.

[0004] However, the above method can only be applied to liquid crystal panels with small process fluctuations and good consistency. For liquid crystal panels with poor consistency, this method may cause the uniform input VCOM value to be not the best VCOM for some specific liquid crystal panels, thereby causing flickering of the picture, and may also cause the Gamma voltage to be not the best voltage for some specific liquid crystal panels, thereby causing the Gamma voltage to exceed the specification range (GM2.2±0.2), thereby causing the problem of uneven picture quality of gray scale overdrive. SUMMARY

[0005] The present application provides a liquid crystal panel driving method, device, display device, and storage medium to solve the problem in the prior art that when developing a TCON-less board, a uniform VCOM value and a set of Gamma voltage values are generally set for the liquid crystal panel. The above method may cause flickering of the picture for liquid crystal panels with poor consistency, and may also cause the problem of uneven picture quality of gray scale overdrive.

[0006] In a first aspect, the present application provides a liquid crystal panel driving method applied to a system-on-chip, wherein the system-on-chip is connected to an integrated logic board through a first predetermined interface, and the system-on-chip is connected to a flash memory corresponding to each liquid crystal panel through a second predetermined interface of the integrated logic board, and the method comprises the following steps:

[0007] For each liquid crystal panel, reading at least one standard register value of a driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board;

[0008] For each driving voltage, converting the corresponding standard register value into a target register value corresponding to the integrated logic board;

[0009] Writing the target register value into the integrated logic board through the first preset interface;

[0010] Controlling the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel to drive the liquid crystal panel.

[0011] As a possible implementation, the converting the corresponding standard register value into a target register value corresponding to the integrated logic board comprises:

[0012] Keeping the voltage value corresponding to the standard register value unchanged, and converting the standard register value into a target register value according to the integrated logic board.

[0013] As a possible implementation, the writing the target register value into the integrated logic board through the first preset interface comprises:

[0014] Determining whether the target register value is the same as a register value pre-stored in the integrated logic board;

[0015] In a case where it is determined that the target register value is not the same as the register value pre-stored in the integrated logic board, writing the target register value into the integrated logic board through a preset serial communication interface.

[0016] As a possible implementation, the method further comprises:

[0017] In a case where it is determined that the target register value is the same as the register value pre-stored in the integrated logic board, returning to execute the reading at least one standard register value of a driving voltage of the liquid crystal panel from the flash memory through the second preset interface of the integrated logic board N times; the N is a positive integer;

[0018] Determining whether each acquired target register value is the same as the register value pre-stored in the integrated logic board;

[0019] If it is determined that each determined target register value is the same as the register value pre-stored in the integrated logic board, determining that the register value pre-stored in the integrated logic board is the target register value.

[0020] As a possible implementation, the writing of the target register value into the integrated logic board through the first preset interface comprises:

[0021] changing the write protection state of the target area in the integrated logic board to be written into the target register value from a protection state to a non-protection state;

[0022] writing the target register value into the target area in the integrated logic board through a preset serial communication interface;

[0023] changing the write protection state of the target area from a non-protection state to a protection state.

[0024] As a possible implementation, the reading of the standard register value of at least one driving voltage of the liquid crystal panel from the flash memory through the second preset interface of the integrated logic board comprises:

[0025] reading the standard gray scale register value of the gray scale voltage from the flash memory through a preset serial peripheral interface of the integrated logic board;

[0026] the conversion of the corresponding standard register value into the target register value corresponding to the integrated logic board for each driving voltage comprises:

[0027] the conversion of the standard gray scale register value into the target gray scale register value corresponding to the integrated logic board for the gray scale voltage;

[0028] the writing of the target register value into the integrated logic board comprises:

[0029] writing the target gray scale register value of the gray scale voltage into the gray scale voltage chip of the integrated logic board.

[0030] As a possible implementation, the reading of the standard register value of at least one driving voltage of the liquid crystal panel from the flash memory through the second preset interface of the integrated logic board comprises:

[0031] reading the standard common register value of the common electrode voltage from the flash memory through a preset serial peripheral interface of the integrated logic board;

[0032] the conversion of the corresponding standard register value into the target register value corresponding to the integrated logic board for each driving voltage comprises:

[0033] the conversion of the standard common register value into the target common register value corresponding to the integrated logic board for the common electrode voltage;

[0034] the writing of the target register value into the integrated logic board comprises:

[0035] write the target common register value of the common electrode voltage into a power management integrated circuit of the integrated logic board.

[0036] In a second aspect, the embodiments of the present application provide a liquid crystal panel driving device, applied to a system on chip, the system on chip being connected with an integrated logic board through a first preset interface, the system on chip being connected with a flash memory corresponding to each liquid crystal panel through a second preset interface of the integrated logic board, and the device comprising:

[0037] a reading module, configured to read, for each liquid crystal panel, a standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board;

[0038] a conversion module, configured to convert, for each driving voltage, the corresponding standard register value into a target register value corresponding to the integrated logic board;

[0039] a writing module, configured to write the target register value into the integrated logic board through the first preset interface;

[0040] a control module, configured to control the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel, and drive the liquid crystal panel.

[0041] As a possible implementation manner, the conversion module comprises:

[0042] a conversion submodule, configured to keep a voltage value corresponding to the standard register value unchanged, convert the standard register value according to the integrated logic board, and obtain a target register value.

[0043] As a possible implementation manner, the writing module comprises:

[0044] a first determination submodule, configured to determine whether the target register value is the same as a register value pre-stored in the integrated logic board;

[0045] a writing submodule, configured to write the target register value into the integrated logic board through a preset serial communication interface in a case where it is determined that the target register value is not the same as the register value pre-stored in the integrated logic board.

[0046] As a possible implementation manner, the device further comprises:

[0047] The first determining module is configured to return to execute the step of reading the standard register value of at least one driving voltage of a liquid crystal panel from the flash memory through the second preset interface of the integrated logic board N times, if it is determined that the target register value is the same as the register value pre-stored in the integrated logic board; N is a positive integer.

[0048] The second determining module is configured to determine whether the target register value obtained each time is the same as the register value pre-stored in the integrated logic board.

[0049] The third determining module is configured to determine that the register value pre-stored in the integrated logic board is the target register value, if it is determined that the target register value determined each time is the same as the register value pre-stored in the integrated logic board.

[0050] As one possible implementation, the writing module comprises:

[0051] The first changing submodule is configured to change the write protection state of a target area in the integrated logic board to which the target register value is to be written from a protection state to a non-protection state.

[0052] The target area writing submodule is configured to write the target register value into the target area in the integrated logic board through a preset serial communication interface.

[0053] The second changing submodule is configured to change the write protection state of the target area from the non-protection state to the protection state.

[0054] As one possible implementation, the reading module is specifically configured to:

[0055] read the standard grayscale register value of the grayscale voltage from the flash memory through a preset serial peripheral interface of the integrated logic board;

[0056] The conversion module is specifically configured to:

[0057] convert the standard grayscale register value into a target grayscale register value corresponding to the integrated logic board for the grayscale voltage;

[0058] The writing module is specifically configured to:

[0059] write the target grayscale register value of the grayscale voltage into a grayscale voltage chip of the integrated logic board.

[0060] As one possible implementation, the reading module is specifically configured to:

[0061] read the standard common register value of the common electrode voltage from the flash memory through a preset serial peripheral interface of the integrated logic board;

[0062] The conversion module is specifically configured to:

[0063] convert the standard common register value into a target common register value corresponding to the integrated logic board for the common electrode voltage;

[0064] The write module is specifically configured to:

[0065] write the target common register value of the common electrode voltage into a power management integrated circuit of the integrated logic board.

[0066] In a third aspect, an embodiment of the present application provides a display device, comprising a system on chip, an integrated logic board, and a plurality of liquid crystal panels, wherein each of the liquid crystal panels corresponds to a flash memory;

[0067] The system on chip is connected with the integrated logic board and the flash memory corresponding to each of the liquid crystal panels respectively;

[0068] The system on chip comprises a processor and a memory, and the processor is configured to execute a liquid crystal panel driving program stored in the memory to implement the liquid crystal panel driving method in any one of the first aspect.

[0069] In a fourth aspect, an embodiment of the present application provides a storage medium, characterized in that the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the liquid crystal panel driving method in any one of the first aspect.

[0070] The technical solution provided by the embodiment of the present application comprises the following steps: for each liquid crystal panel, reading a standard register value of at least one driving voltage of the liquid crystal panel from a corresponding flash memory through a second preset interface of an integrated logic board, converting the corresponding standard register value into a target register value corresponding to the integrated logic board for each driving voltage, writing the target register value into the integrated logic board through a first preset interface, controlling the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel, and driving the liquid crystal panel. This technical solution sets a preset interface on the integrated logic board, so that the system on chip obtains the standard driving voltage of each liquid crystal panel through the preset interface, and sets the driving voltage of each liquid crystal panel for the basic logic board based on the obtained standard driving voltage, thereby realizing the matching of the corresponding standard driving voltage for each liquid crystal panel in the TCON-less board, and improving the stability of the display picture of the liquid crystal panel and the picture quality effect. BRIEF DESCRIPTION OF DRAWINGS

[0071] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without any creative effort.

[0073] One or more embodiments are illustrated by way of example with reference to the drawings, which are schematic and not drawn to scale, wherein the same or similar elements are denoted by the same reference numerals, and wherein the various drawings are not to scale unless otherwise indicated. The drawings are intended to facilitate understanding of embodiments of the present application without in any way presenting limiting views.

[0074] Figure 1 A structural schematic diagram of a display device according to an embodiment of the present application is provided.

[0075] Figure 2 A schematic diagram of a driving voltage flow direction of a liquid crystal panel according to an embodiment of the present application is provided.

[0076] Figure 3 An embodiment flow chart of a liquid crystal panel driving method according to an embodiment of the present application is provided.

[0077] Figure 4 An embodiment flow chart of another liquid crystal panel driving method according to an embodiment of the present application is provided.

[0078] Figure 5 An embodiment block diagram of a liquid crystal panel driving device according to an embodiment of the present application is provided.

[0079] Figure 6 A structural schematic diagram of another display device according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0080] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort belong to the scope of protection of the present application.

[0081] The following disclosure provides a number of different embodiments or examples for implementing different aspects of the present application. In order to simplify the present application, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, reference numbers and / or letters can be repeated in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0082] In order to solve the technical problem that in the prior art, when developing a TCON-less board, a uniform VCOM value and a set of Gamma voltage values are generally set for a liquid crystal panel, and the above method can cause flickering of the picture for a liquid crystal panel with poor consistency, and can also cause uneven grayscale and other picture quality problems, the present application provides a liquid crystal panel driving method, device, display equipment and storage medium, which can match corresponding standard driving voltages for each liquid crystal panel in the TCON-less board, thereby improving the stability and picture quality effect of the liquid crystal panel display picture.

[0083] In order to facilitate understanding of the liquid crystal panel driving method provided by the embodiments of the present application, the display equipment related to the liquid crystal panel driving method will be exemplified first.

[0084] Referring to Figure 1 A structural schematic diagram of a display equipment provided by the embodiments of the present application is shown. As Figure 1 shown, the display equipment can include a system on chip 11, an integrated logic board 12, a plurality of liquid crystal panels 13 (one liquid crystal panel 13 is taken as an example in the figure), and a flash memory 14 corresponding to each liquid crystal panel.

[0085] The system on chip 11 can be the mainboard of the display equipment, which can be connected with the integrated logic board 12 and the flash memory 14 corresponding to each liquid crystal panel 13, respectively.

[0086] The integrated logic board 12 refers to a TCON-less developed to reduce the product cost of a display equipment such as a television. The so-called TCON-less mainly removes the TCON (Timing control, LCD timing control) board of a screen factory, and a system factory develops a TCON-less board suitable for a specific panel according to the specifications of the liquid crystal panel of the screen factory, to light up the liquid crystal panel provided by the screen factory to the system factory. Therefore, the integrated logic board 12 can be used to output a driving voltage to the liquid crystal panel, to drive the corresponding liquid crystal panel.

[0087] The liquid crystal panel 13 is a material that determines the brightness, contrast, color, viewing angle, etc. of the display equipment.

[0088] The flash memory 14 is a flash chip corresponding to each liquid crystal panel 13, which can be used to store standard data of the corresponding liquid crystal panel 13, such as the VCOM voltage value and the Gamma voltage value matched when the liquid crystal panel is shipped.

[0089] In practical applications, referring to Figure 2 A liquid crystal panel driving voltage flow direction diagram is provided for the embodiment of the present application. As shown in the figure, Figure 2 In the system factory, the P-Gamma IC (Gamma voltage generating integrated chip) or PMIC (Power Management IC, power management integrated circuit) on the self-made TCON-less (integrated logic board) board respectively inputs the GM (Gamma) voltage (up to 14 groups of GM, GM1-GM14) and the VCOM voltage (there can be multiple VCOM voltages, such as CFVCOM / SBVCOM / AVCOM) into the COF (Chip On Flex, Chip On Flex) and the liquid crystal panel.

[0090] Among them, the GM voltage is used for the COF to output each gray scale voltage to the liquid crystal panel, and the VCOM is the reference voltage of each signal in the liquid crystal panel, especially the data signal. The clamping voltage between the Data voltage of the panel and the VCOM voltage charges the liquid crystal capacitor or the storage capacitor, and drives the liquid crystal deflection.

[0091] For this, in the prior art, when developing the integrated logic board 12, a unified VCOM value and a set of Gamma voltage values are set for multiple liquid crystal panels 13 to output the fixed driving voltage, i.e. the VCOM voltage and the Gamma voltage, to each liquid crystal panel 13.

[0092] However, the above method can only be applied to liquid crystal panels with small process fluctuations and good consistency. For liquid crystal panels with poor consistency, this method may cause the unified input VCOM value to be not the best VCOM for some specific liquid crystal panels, resulting in picture flicker defects, and may also cause the Gamma voltage to be not the best voltage for some specific liquid crystal panels, causing the Gamma voltage to exceed the specification range (GM2.2±0.2), resulting in uneven gray scale and picture quality problems.

[0093] To this end, in the embodiments of the present application, two preset interfaces, such as SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) interfaces (for example, SDA / SCL / WP / GND), can be provided for the integrated logic board. Based on this, the system chip 11 and the integrated logic board 12 can be connected through the first preset interface (for example, I2C), and the flash memory 14 of each liquid crystal panel 13 can be connected through the second preset interface (for example, SPI).

[0094] In the embodiments of the present application, the system chip 11 can read the standard driving voltage corresponding to the liquid crystal panel from the flash memory 14 through the second preset interface by using the liquid crystal panel driving method provided in the embodiments of the present application, and set the target driving voltage corresponding to each liquid crystal panel for the integrated logic board 12 through the first preset interface based on the read standard driving voltage, so that the best standard driving voltage corresponding to each liquid crystal panel is matched in the TCON-less board, thereby improving the stability and picture quality effect of the display picture of the liquid crystal panel.

[0095] The liquid crystal panel driving method provided in the present application will be further explained and described in detail with specific embodiments in combination with the accompanying drawings, and the embodiments do not constitute a limitation on the embodiments of the present application.

[0096] Reference is made to Figure 3 An embodiment flow chart of a liquid crystal panel driving method provided in the embodiments of the present application. As an embodiment, the liquid crystal panel driving method provided in the embodiments of the present application can be applied to a system chip (for example, the system chip 11 shown in Figure 1 The system chip can be connected with the integrated logic board through the first preset interface, and the system chip can be connected with the flash memory corresponding to each liquid crystal panel through the second preset interface of the integrated logic board. As shown in Figure 3 The flow chart can include the following steps:

[0097] Step 301, for each liquid crystal panel, reading the standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board.

[0098] The above-mentioned second preset interface refers to the connection interface of the system chip and the flash memory corresponding to each liquid crystal panel, which can be an SPI interface or other external interface, and the embodiments of the present application do not limit this.

[0099] The above-mentioned driving voltage refers to the voltage for driving the liquid crystal panel to work, which can include but is not limited to the gray scale voltage (Gamma voltage) and the common electrode voltage (VCOM voltage).

[0100] The flash memory is a flash chip corresponding to the liquid crystal panel. Each liquid crystal panel can correspond to one flash memory. The flash memory can be used to store the parameter values of the corresponding liquid crystal panel, such as the driving voltage value.

[0101] In actual application, before the screen factory delivers the liquid crystal panel to the system factory, the driving voltage (for example, Gamma / VCOM voltage) is matched. A set of Gamma voltage and VCOM voltage are matched for each specific liquid crystal panel through the original TCON board and CA310 / CH340 optical equipment, and the data is written into the X-borad flash memory and delivered to the system factory together with the liquid crystal panel.

[0102] In the embodiment of the application, in order to determine the most matched driving voltage value of each liquid crystal panel, the system chip can read the standard driving voltage value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board. Since the standard driving voltage value is recorded in the register of the flash memory, the standard register value of at least one driving voltage can be obtained.

[0103] In an embodiment, the second preset interface can be a serial peripheral interface, and the driving voltage can include a gray scale voltage. Based on this, the system chip can read the standard gray scale register value of the gray scale voltage from the flash memory through the serial peripheral interface of the integrated logic board.

[0104] In another embodiment, the second preset interface can be a serial peripheral interface, and the driving voltage can include a common electrode voltage. Based on this, the system chip can read the standard common register value of the common electrode voltage from the flash memory through the serial peripheral interface of the integrated logic board.

[0105] In still another embodiment, the second preset interface can be a serial peripheral interface, and the driving voltage can include a gray scale voltage and a common electrode voltage. Based on this, the system chip can read the standard gray scale register value of the gray scale voltage and the standard common register value of the common electrode voltage from the flash memory through the serial peripheral interface of the integrated logic board.

[0106] Step 302, for each driving voltage, the corresponding standard register value is converted into a target register value corresponding to the integrated logic board.

[0107] The target register value refers to the register value applicable to the integrated logic board.

[0108] In actual application, since the register used in the integrated logic board and the register used in the flash memory corresponding to the liquid crystal panel are of different types, in the embodiment of the application, after the standard register value of the driving voltage corresponding to the liquid crystal panel is obtained, the standard register value can be converted into a target register value applicable to the integrated logic board.

[0109] As an exemplary embodiment, when converting the standard register value into the target register value, the voltage value corresponding to the standard register value can be kept unchanged, and the standard register value is converted according to the integrated logic board to obtain the target register value.

[0110] In step 303, the target register value is written into the integrated logic board through the first preset interface.

[0111] In step 304, the integrated logic board is controlled to output the driving voltage corresponding to the target register value to the liquid crystal panel, and the liquid crystal panel is driven.

[0112] The steps 303 and 304 are described as follows:

[0113] In the embodiment of the present application, after the target register value suitable for the integrated logic board is determined, the system-level chip can directly write the target register value into the integrated logic board through the first preset interface (such as I2C interface), so as to control the integrated logic board to output the driving voltage corresponding to the target register value to the liquid crystal panel, and drive the liquid crystal panel.

[0114] In an embodiment, when the driving voltage is a gray scale voltage, the system-level chip can read the standard gray scale register value of the gray scale voltage from the flash memory through the serial peripheral interface preset by the integrated logic board, and convert the standard gray scale register value into the target gray scale register value corresponding to the integrated logic board for the gray scale voltage.

[0115] Then, the target gray scale register value of the gray scale voltage can be written into the gray scale voltage chip (P-gamma IC) of the integrated logic board.

[0116] In another embodiment, when the driving voltage is a common electrode voltage, the system-level chip can read the standard common register value of the common electrode voltage from the flash memory through the serial peripheral interface preset by the integrated logic board, and convert the standard common register value into the target common register value corresponding to the integrated logic board for the common electrode voltage.

[0117] Then, the target common register value of the common electrode voltage can be written into the power management integrated circuit (PMIC) of the integrated logic board.

[0118] In yet another embodiment, when the driving voltage includes a gray scale voltage and a common electrode voltage, the system-level chip can read the standard gray scale register value of the gray scale voltage and the standard common register value of the common electrode voltage from the flash memory through the serial peripheral interface preset by the integrated logic board.

[0119] Then, the standard gray scale register value can be converted into a target gray scale register value corresponding to the integrated logic board for the gray scale voltage, and the standard common register value can be converted into a target common register value corresponding to the integrated logic board for the common electrode voltage.

[0120] Finally, the target gray scale register value of the gray scale voltage and the target common register value of the common electrode voltage can be written into the gray scale voltage chip and the power management integrated circuit of the integrated logic board, respectively.

[0121] In an embodiment, since each liquid crystal panel driving voltage value can be pre-stored in the integrated logic board, when the target register value is written into the integrated logic board through the first preset interface, it can be determined whether the target register value is the same as the pre-stored register value in the integrated logic board.

[0122] Optionally, if it is determined that the target register value is not the same as the pre-stored register value in the integrated logic board, it indicates that the pre-stored driving voltage value in the integrated logic board is inaccurate, and thus the target register value can be directly written into the integrated logic board.

[0123] On the contrary, if it is determined that the target register value is the same as the pre-stored register value in the integrated logic board, it indicates that the pre-stored driving voltage value in the integrated logic board is relatively accurate, and thus the pre-stored register value of the integrated logic board can be directly used as the target register value to control the integrated logic board to output the driving voltage to the liquid crystal panel according to the target register value, so as to drive the liquid crystal panel. In addition, the target register can also be written into the integrated logic board, which is not limited in the embodiments of the present application.

[0124] Further, in order to improve the accuracy of determining the target register value and the security of writing the target register value, the system-level chip can return to execute the step of reading the standard register value of at least one driving voltage of the liquid crystal panel from the flash memory through the second preset interface of the integrated logic board when it is determined that the target register value is the same as the pre-stored register value in the integrated logic board, and again determine whether the target register value corresponding to the read standard register value is the same as the pre-stored register value in the integrated logic board.

[0125] Optionally, if the target register value is determined to be the same as the pre-stored register value in the integrated logic board for N times, the pre-stored register value in the integrated logic board can be determined as the target register value.

[0126] In an embodiment, in order to prevent the written data in the integrated logic board from being tampered, a write protection state can be set for a target area in the integrated logic board where a target register value is to be written. When the target register value is written in the target area of the integrated logic board, the protection state of the target area can be set to a non-protection state; and after the target register value is written in the target area of the integrated logic board, the protection state of the target area can be set to a protection state to prevent the written target register value from being tampered. For example, when the driving voltage is a gray scale voltage, the target area can be a gray scale voltage chip, and when the driving voltage is a common electrode voltage, the target area can be a power management integrated circuit.

[0127] Based on this, when the target register value is written in the integrated logic board through the first preset interface, the write protection state of the target area in the integrated logic board where the target register value is to be written can be changed from the protection state to the non-protection state. For example, the writable or unwritable state can be changed by the high or low state of a WP pin, and when the WP is pulled low, the state is writable, and when the WP is pulled high, the state is unwritable.

[0128] After that, the target register value can be written in the target area in the integrated logic board through the preset serial communication interface, and after the writing is completed, the write protection state of the target area can be changed from the non-protection state to the protection state.

[0129] The technical scheme provided by the embodiments of the present application comprises the following steps: for each liquid crystal panel, reading a standard register value of at least one driving voltage of the liquid crystal panel from a corresponding flash memory through a second preset interface of an integrated logic board; for each driving voltage, converting the corresponding standard register value into a target register value corresponding to the integrated logic board; writing the target register value into the integrated logic board through a first preset interface; controlling the integrated logic board to output the driving voltage corresponding to the target register value to the liquid crystal panel; and driving the liquid crystal panel. This technical scheme sets a preset interface on the integrated logic board, so that the system-level chip obtains the standard driving voltage of each liquid crystal panel through the preset interface, and sets the driving voltage of each liquid crystal panel for the basic logic board based on the obtained standard driving voltage, thereby realizing the matching of the corresponding standard driving voltage for each liquid crystal panel in the TCON-less board, and improving the stability of the display picture of the liquid crystal panel and the picture quality effect.

[0130] Referring to Figure 4 An embodiment flowchart of another liquid crystal panel driving method provided by the embodiments of the present application is shown in FIG. 6. As shown in FIG. 6, the flowchart can comprise the following contents: Figure 4

[0131] ​In practical application, the screen factory will match the driving voltage corresponding to each liquid crystal panel before shipping to the system factory. Through the original TCON board and CA310 / CH340 optical equipment, a set of Gamma voltage and VCOM voltage is matched for each specific liquid crystal panel, and these data are written into the X-board flash (flash memory) and shipped to the system factory together with the liquid crystal panel.

[0132] Based on this, in the embodiments of the present application, the PMIC supplies power to the entire liquid crystal panel each time the power is turned on, so that each module starts to work. Then the SOC (system on chip) reads data from the X-board flash through SPI. Since the P-gamma IC / PMIC used by the self-made TCON-less board of the system factory is likely to be different from that used by the original factory, the read data needs to be converted. The principle of conversion is that the voltage value remains unchanged.

[0133] Then, the converted register value A is compared with the pre-stored register value B of the GMIC on the TCON-less board. If the comparison result A and B is the same, the SOC writes into the P-gamma IC / PMIC to drive the panel to work. If the comparison result A and B is different, the step of reading data from the X-board flash is returned to execute.

[0134] Optionally, in order to ensure that the data in the P-gamma IC / PMIC is not tampered with, the P-gamma IC / PMIC generally has write protection. The writeable or non-writable state is changed through the high or low state of a WP pin, and the state is generally non-writable. For example, for a specific PMIC / P-gamma IC, when WP is high, it is in a non-writable state. After the SOC reads the data from the X-board flash, it needs to pull down the WP pin to make the PMIC / P-gamma IC in a writable state, and then write operation can be performed on the P-gamma IC / PMIC. After writing the P-gamma IC / PMIC, the WP state needs to be pulled high again, so that the P-gamma IC / PMIC can enter the write protection state again, avoiding the registers inside being rewritten.

[0135] The technical scheme provided by the embodiment of the application reserves an SPI and an I2C interface when a TCON-less is sent. When powered on each time, the SOC reads auto-Pgamma and auto-VCOM data from a flash on an X-board / S-PCBA through an SPI interface, and then converts the data into voltage settings on a P-gamma IC / PMIC on a self-made TCON-less board corresponding to a system, and then writes the voltage settings into the P-gamma IC / PMIC of the self-made TCON-less board through an I2C by the SOC, so as to realize an Auto-Pgamma / Auto-VCOM display effect.

[0136] Referring to Figure 5 An embodiment block diagram of a liquid crystal panel driving device provided by the embodiment of the application is provided. As an embodiment, the device is applied to a system on chip, the system on chip can be connected with an integrated logic board through a first preset interface, and the system on chip can be connected with a flash corresponding to each liquid crystal panel through a second preset interface of the integrated logic board. As shown in Figure 5 The device can include:

[0137] A reading module 51 is configured to read, for each liquid crystal panel, a standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash through the second preset interface of the integrated logic board;

[0138] A conversion module 52 is configured to convert, for each driving voltage, the corresponding standard register value into a target register value corresponding to the integrated logic board;

[0139] A writing module 53 is configured to write the target register value into the integrated logic board through the first preset interface;

[0140] A control module 54 is configured to control the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel, and drive the liquid crystal panel.

[0141] As a possible implementation, the conversion module 52 includes:

[0142] A conversion submodule is configured to keep a voltage value corresponding to the standard register value unchanged, convert the standard register value according to the integrated logic board, and obtain a target register value.

[0143] As a possible implementation, the writing module 53 includes:

[0144] A first determination submodule is configured to determine whether the target register value is the same as a register value pre-stored in the integrated logic board;

[0145] The writing submodule is configured to write the target register value into the integrated logic board through a preset serial communication interface when it is determined that the target register value is different from the register value pre-stored in the integrated logic board.

[0146] As a possible implementation, the device further comprises (not shown in the figure):

[0147] The first determining module is configured to return to execute the step of reading the standard register value of at least one driving voltage of the liquid crystal panel from the flash memory through the second preset interface of the integrated logic board N times when it is determined that the target register value is the same as the register value pre-stored in the integrated logic board; N is a positive integer;

[0148] The second determining module is configured to determine whether the target register value obtained each time is the same as the register value pre-stored in the integrated logic board.

[0149] The third determining module is configured to determine that the register value pre-stored in the integrated logic board is the target register value if it is determined that the target register value determined each time is the same as the register value pre-stored in the integrated logic board.

[0150] As a possible implementation, the writing module 53 comprises:

[0151] The first changing submodule is configured to change the write protection state of a target area in the integrated logic board to which the target register value is to be written from a protection state to a non-protection state.

[0152] The target area writing submodule is configured to write the target register value into the target area in the integrated logic board through a preset serial communication interface.

[0153] The second changing submodule is configured to change the write protection state of the target area from the non-protection state to the protection state.

[0154] As a possible implementation, the reading module 51 is specifically configured to:

[0155] read the standard gray-scale register value of the gray-scale voltage from the flash memory through a preset serial peripheral interface of the integrated logic board.

[0156] The conversion module 52 is specifically configured to:

[0157] convert the standard gray-scale register value into a target gray-scale register value corresponding to the integrated logic board for the gray-scale voltage.

[0158] The writing module 53 is specifically configured to:

[0159] write the target grayscale register value of the grayscale voltage into a grayscale voltage chip of the integrated logic board.

[0160] As one possible implementation, the reading module 51 is specifically configured to:

[0161] read, from the flash memory, a standard common register value of the common electrode voltage through a serial peripheral interface preset by the integrated logic board;

[0162] The conversion module 52 is specifically configured to:

[0163] convert the standard common register value into a target common register value corresponding to the integrated logic board for the common electrode voltage;

[0164] The writing module 53 is specifically configured to:

[0165] write the target common register value of the common electrode voltage into a power management integrated circuit of the integrated logic board.

[0166] As shown in Figure 6 FIG. 2 is a structural schematic diagram of another display device provided by an embodiment of the present application, which includes a system-level chip 61, an integrated logic board 62, a plurality of liquid crystal panels 63, and a flash memory 64 corresponding to each liquid crystal panel 63.

[0167] The system-level chip 61 can be connected with the integrated logic board 62, and connected with the flash memory 64 corresponding to each liquid crystal panel 63 through a preset interface of the integrated logic board 62.

[0168] The system-level chip 61 can include a processor 611, a communication interface 612, a memory 613, and a communication bus 614, wherein the processor 611, the communication interface 612, and the memory 613 complete mutual communication through the communication bus 614,

[0169] The memory 613 is configured to store a computer program.

[0170] In an embodiment of the present application, the processor 611 is configured to execute the program stored in the memory 613, and implement the liquid crystal panel driving method provided by any one of the preceding method embodiments, including:

[0171] For each liquid crystal panel, read, from the flash memory corresponding to the liquid crystal panel, a standard register value of at least one driving voltage of the liquid crystal panel through the second preset interface of the integrated logic board;

[0172] For each driving voltage, convert the corresponding standard register value into a target register value corresponding to the integrated logic board;

[0173] write the target register value to the integrated logic board through the first preset interface;

[0174] control the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel, and drive the liquid crystal panel.

[0175] The embodiment of the present application further provides a storage medium, which has a computer program stored thereon, and the computer program is executed by a processor to realize the steps of the liquid crystal panel driving method provided by any one of the foregoing method embodiments.

[0176] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0177] Through the description of the foregoing embodiments, those skilled in the art can clearly understand that each embodiment can be realized by means of software plus a general hardware platform, and of course can also be realized by hardware. Based on such understanding, the foregoing technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, or an optical disk, and includes a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0178] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are to be construed to be inclusive (i.e., to include both instances) unless otherwise indicated herein with certainty. The methods described herein can be implemented by one or more computer programs or software modules, which can be stored on a computer-readable storage medium, such as a ROM / RAM, a magnetic disk, or an optical disk, and include a plurality of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0179] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and it is intended to embrace all such modifications and changes that fall within the scope of the application. Accordingly, the application is not to be restricted in scope to the specific embodiments disclosed herein but is to be accorded the full scope that the principles and novel features request appropriately granted.

Claims

1. A liquid crystal panel drive method characterized by comprising: The application is applied to a system level chip, the system level chip is connected with an integrated logic board through a first preset interface, the system level chip is connected with a flash memory corresponding to each liquid crystal panel through a second preset interface of the integrated logic board, and the method comprises the following steps: For each liquid crystal panel, reading a standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board, wherein each liquid crystal panel corresponds to a flash memory; For each driving voltage, converting the corresponding standard register value into a target register value corresponding to the integrated logic board, comprising: keeping the voltage value corresponding to the standard register value unchanged, converting the standard register value according to the integrated logic board to obtain a target register value; Writing the target register value into the integrated logic board through the first preset interface, comprising: determining whether the target register value is the same as a register value pre-stored in the integrated logic board; in the case that the target register value is determined to be different from the register value pre-stored in the integrated logic board, writing the target register value into the integrated logic board through a preset serial communication interface; Controlling the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel to drive the liquid crystal panel.

2. The method of claim 1, wherein, The method further comprises the following steps: In the case that the target register value is determined to be the same as the register value pre-stored in the integrated logic board, returning to execute the step of reading a standard register value of at least one driving voltage of a liquid crystal panel from a flash memory through the second preset interface of the integrated logic board N times; N is a positive integer; Determining whether each obtained target register value is the same as the register value pre-stored in the integrated logic board; If each determined target register value is determined to be the same as the register value pre-stored in the integrated logic board, it is determined that the register value pre-stored in the integrated logic board is a target register value.

3. The method of claim 1, wherein, The step of writing the target register value into the integrated logic board through the first preset interface comprises the following steps: Changing a write protection state of a target area in the integrated logic board to be written into a target register value from a protection state to a non-protection state; Writing the target register value into the target area in the integrated logic board through a preset serial communication interface; Changing the write protection state of the target area from the non-protection state to the protection state.

4. The method of claim 1, wherein, The step of reading a standard register value of at least one driving voltage of a liquid crystal panel from a flash memory through the second preset interface of the integrated logic board comprises the following steps: Reading a standard gray scale register value of a gray scale voltage from the flash memory through a serial peripheral interface of the integrated logic board; The step of converting the standard register value corresponding to each driving voltage into a target register value corresponding to the integrated logic board comprises the following steps: For the gray scale voltage, converting the standard gray scale register value into a target gray scale register value corresponding to the integrated logic board; The step of writing the target register value into the integrated logic board comprises the following steps: write the target grayscale register value of the grayscale voltage into a grayscale voltage chip of the integrated logic board.

5. The method of claim 1, wherein, reading, by the second preset interface of the integrated logic board, a standard register value of at least one driving voltage of a liquid crystal panel from the flash memory, comprises: reading, by a serial peripheral interface preset by the integrated logic board, a standard common register value of a common electrode voltage from the flash memory; converting, for each driving voltage, the corresponding standard register value into a target register value corresponding to the integrated logic board, comprises: converting, for the common electrode voltage, the standard common register value into a target common register value corresponding to the integrated logic board; writing the target register value into the integrated logic board, comprises: writing the target common register value of the common electrode voltage into a power management integrated circuit of the integrated logic board.

6. A liquid crystal panel drive device characterized by comprising: The application is applied to a system on chip, the system on chip is connected with an integrated logic board through a first preset interface, the system on chip is connected with a flash memory corresponding to each liquid crystal panel through a second preset interface of the integrated logic board, and the device comprises: a reading module, configured to read, for each liquid crystal panel, a standard register value of at least one driving voltage of the liquid crystal panel from the corresponding flash memory through the second preset interface of the integrated logic board, wherein the each liquid crystal panel corresponds to one flash memory; a conversion module, configured to convert, for each driving voltage, the corresponding standard register value into a target register value corresponding to the integrated logic board, comprising: keeping the voltage value corresponding to the standard register value unchanged, converting the standard register value according to the integrated logic board to obtain a target register value; a writing module, configured to write the target register value into the integrated logic board through the first preset interface, comprising: determining whether the target register value is same as a register value pre-stored in the integrated logic board; and in a case where it is determined that the target register value is not same as the register value pre-stored in the integrated logic board, writing the target register value into the integrated logic board through a preset serial communication interface; a control module, configured to control the integrated logic board to output a driving voltage corresponding to the target register value to the liquid crystal panel to drive the liquid crystal panel.

7. A display device, characterized by The application relates to a system on chip, an integrated logic board, and a plurality of liquid crystal panels, wherein each liquid crystal panel corresponds to one flash memory; The system on chip is connected with the integrated logic board and the flash memory corresponding to each liquid crystal panel respectively; The system on chip comprises a processor and a memory, the processor is configured to execute a liquid crystal panel driving program stored in the memory to implement the liquid crystal panel driving method in any one of claims 1 to 5.

8. A storage medium, characterized by The storage medium stores one or more programs, the one or more programs can be executed by one or more processors to implement the liquid crystal panel driving method in any one of claims 1 to 5.

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