Display screen vcom voltage calibration method and apparatus

Abstract

The present application relates to the technical field of display screen, especially to a display screen VCOM voltage calibration method and device, the method comprises: based on the working cycle of display screen burning equipment, the power-on display screen is divided into reference display screen and subordinate display screen in order; the first value interval of the register of the reference display screen is traversed, and the reference flicker value of the reference display screen is obtained; the VCOM voltage value corresponding to the base value is burned into the drive IC of the reference display screen; the second value interval of the register of the subordinate display screen is obtained according to the base value; the second value interval is traversed, and the target flicker value corresponding to the subordinate display screen is obtained according to the reference flicker value; the VCOM voltage value corresponding to the target value is burned into the drive IC of the subordinate display screen. The present application greatly improves the display screen VCOM voltage calibration efficiency, improves the production efficiency; ensure that the flicker state of the display screen in the same working cycle has consistency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen, in particular to a display screen VCOM voltage calibration method and device. BACKGROUND

[0002] Currently, with the increasing demand for display effect in the application field of display screen, higher requirements are put forward for the consistency of screen flicker specification. For example, the flicker value of low-resolution screen is generally required to be not more than-25db, and the flicker value of high-resolution screen is generally required to be not more than-30db. Therefore, the smaller the flicker value is, the better the screen display effect is. In order to meet the consistency requirements of these specifications, it is necessary to use display screen burning test equipment to automatically adjust the value of VCOM register of each display screen Driver IC, so as to adjust the VCOM voltage value of the Driver IC driving the liquid crystal panel, so that the liquid crystal panel is in the best flicker state that meets the specifications. Then the value of the VCOM register corresponding to the best flicker state is burned and fixed in the Driver IC, so that the display screen has the best performance that meets the specification consistency when the display screen is lit. In order to 100% ensure that the best flicker state of each display screen is found, all the settable values of the VCOM register are exhausted, and the setting and test flicker value of each value generally takes about 100ms, resulting in a long time for testing all the settable values of the VCOM register, which is difficult to accept for the production efficiency of the flow line.

[0003] At present, a compromise scheme is usually adopted, that is, a few tens of products are sampled first, the value of the VCOM register corresponding to the best flicker state of the display screen is roughly determined, and then the flicker effect of each VCOM value in the range is tried to find the best value, so that the burning output efficiency of the equipment can be improved. However, there is a problem here. If the batch characteristics of the liquid crystal glass panel change, the approximate range of the value of the VCOM register corresponding to the best flicker state will also change. If the best value is still found in the original range, the burning result will be unsatisfactory. SUMMARY

[0004] In order to solve the above technical problems, the present application provides a display screen VCOM voltage calibration method and device.

[0005] The present application adopts the following technical scheme: a display screen VCOM voltage calibration method, the method comprising:

[0006] Based on the working cycle of the display screen burning equipment, the powered display screens are divided into reference display screens and subordinate display screens in order;

[0007] traverse a first value interval of a VCOM register of the reference display screen to obtain a reference flicker value of the reference display screen; wherein the first value interval comprises all settable values of the VCOM register;

[0008] set a settable value in the first value interval corresponding to the reference flicker value as a base value, and burn a VCOM voltage value corresponding to the base value into a Driver IC of the reference display screen;

[0009] obtain a second value interval of a VCOM register of the slave display screen according to the base value; wherein the second value interval comprises part of settable values of the VCOM register;

[0010] traverse the second value interval and obtain a target flicker value corresponding to the slave display screen according to the reference flicker value;

[0011] set a settable value in the second value interval corresponding to the target flicker value as a mark value, and burn a VCOM voltage value corresponding to the mark value into a Driver IC of the slave display screen.

[0012] The display screen VCOM voltage calibration method of the embodiment of the application divides display screens in the same working period into a reference display screen and a slave display screen, then takes the reference flicker value and the base value of the reference display screen as a standard, obtains a second value interval according to the base value, makes the slave display screen find a mark value and a corresponding target flicker value in the second value interval, and respectively burns VCOM voltage values corresponding to the base value and the mark value into corresponding display screen Driver ICs, thereby completing calibration of the display screen VCOM voltage. Since the length of the second value interval is smaller than the length of the first value interval, compared with traversing the first value interval for all display screens in the same working period, the display screen VCOM voltage calibration efficiency is greatly improved, and the production efficiency is improved. According to the principle that the same production shift does not burn display screens of different batches, that is, the display screen burning equipment burns display screens of the same batch in the same working period, the mark value and the target flicker value are obtained according to the reference flicker value and the base value, which also ensures that the flicker states of the display screens in the same working period are consistent, so that the screens obtained through subsequent assembly production have good flicker states.

[0013] Further, the step of dividing the powered display screens into the reference display screen and the slave display screen according to the working period of the display screen burning equipment specifically comprises:

[0014] The working status of the display screen programming device is obtained, including startup and shutdown, with the time from startup to shutdown of the display screen programming device being defined as one working cycle.

[0015] In any working cycle of the display screen programming device, the first power-on display screen is defined as the reference display screen, and the subsequent power-on display screens are defined as slave display screens.

[0016] Furthermore, the step of traversing the first value range of the VCOM register of the reference display screen to obtain the reference flicker value of the reference display screen specifically includes:

[0017] Traverse the first value range of the VCOM register of the reference display screen, perform flicker detection on the reference display screen, and obtain a first set of candidate flicker values ​​corresponding to the reference display screen. The first set of candidate flicker values ​​contains multiple first candidate flicker values, and each settable value in the first value range corresponds to a first candidate flicker value.

[0018] Sort the first candidate flicker values ​​in the first candidate flicker value set, and define the smallest first candidate flicker value as the base flicker value;

[0019] The range of the first value interval is 1 to 256 or 1 to 512.

[0020] Furthermore, the step of obtaining the second value range of the VCOM register of the slave display based on the base value specifically includes:

[0021] The interval threshold a is determined based on the VCOM register value corresponding to the minimum flicker value of multiple displays in the same batch;

[0022] If the base value is defined as n, then the second value range of the VCOM register of the slave display is (na, n+a).

[0023] Furthermore, the step of traversing the second value range and obtaining the target flicker value corresponding to the subordinate display screen based on the baseline flicker value specifically includes:

[0024] Traverse the second value range, perform flicker detection on the subordinate display screen, and obtain a second candidate flicker value set corresponding to the subordinate display screen. The second candidate flicker value set contains multiple second candidate flicker values, and each settable value in the second value range corresponds to a second candidate flicker value.

[0025] When the second candidate flicker value equal to the reference flicker value exists in the second candidate flicker value set, the second candidate flicker value equal to the reference flicker value is defined as a first candidate flicker value;

[0026] If the number of the first candidate flicker value is only one, the first candidate flicker value is defined as a target flicker value; if the number of the first candidate flicker value is more than one, any one of the first candidate flicker value is defined as the target flicker value;

[0027] When the second candidate flicker value equal to the reference flicker value does not exist in the second candidate flicker value set, and the second candidate flicker value less than the reference flicker value exists in the second candidate flicker value set, the second candidate flicker value less than the reference flicker value is defined as a second candidate flicker value;

[0028] If the number of the second candidate flicker value is only one, the second candidate flicker value is defined as a target flicker value; if the number of the second candidate flicker value is more than one, the maximum second candidate flicker value is defined as the target flicker value;

[0029] When the second candidate flicker value of the second candidate flicker value set is all greater than the reference flicker value, the minimum second candidate flicker value is defined as the target flicker value.

[0030] The application further provides a display screen VCOM voltage calibration device, which comprises:

[0031] A power-on module is configured to divide the power-on display screens into reference display screens and subordinate display screens according to the working cycle of the display screen burning equipment;

[0032] A first detection module is configured to traverse the first value interval of the VCOM register of the reference display screen to obtain the reference flicker value of the reference display screen; wherein the first value interval comprises all the settable values of the VCOM register.

[0033] The first burning module is configured to set the values in the first value interval corresponding to the reference flicker value as base values, and burn the VCOM voltage value corresponding to the base values into the Driver IC of the reference display screen;

[0034] The calculation module is configured to obtain a second value interval of the VCOM register of the slave display screen according to the base value, wherein the second value interval includes part of the set values of the VCOM register;

[0035] The second detection module is configured to traverse the second value interval, and obtain a target flicker value corresponding to the slave display screen according to the reference flicker value;

[0036] The second burning module is configured to set the values in the second value interval corresponding to the target flicker value as standard values, and burn the VCOM voltage value corresponding to the standard values into the Driver IC of the slave display screen.

[0037] The display screen VCOM voltage calibration device of the embodiment of the application divides the display screens in the same working period into a reference display screen and a slave display screen, and then takes the reference flicker value and the base value of the reference display screen as the standard, obtains a second value interval according to the base value, makes the slave display screen find a standard value and a corresponding target flicker value in the second value interval, and burns the VCOM voltage value corresponding to the base value and the standard value into the corresponding display screen Driver IC, thereby completing the calibration of the display screen VCOM voltage. Since the length of the second value interval is smaller than the length of the first value interval, compared with the full traversal of the first value interval of the display screens in the same working period, the calibration efficiency of the display screen VCOM voltage is greatly improved, and the production efficiency is improved. According to the principle that the display screen burning equipment burns the display screens of the same batch in the same working period, the standard value and the target flicker value are obtained according to the reference flicker value and the base value, which also ensures that the flicker states of the display screens in the same working period are consistent, so that the screens obtained in the subsequent assembly production have good flicker states.

[0038] Further, the power-on module is specifically configured to:

[0039] obtain the working state of the display screen burning equipment, the working state of the display screen burning equipment includes starting and closing, and the time from the starting of the display screen burning equipment to the closing of the display screen burning equipment is a working period;

[0040] in any working period of the display screen burning equipment, the first display screen powered on is defined as a reference display screen, and the subsequent display screens powered on are defined as slave display screens.

[0041] Further, the first detection module is specifically used for:

[0042] traversing a first value interval of a VCOM register of the reference display screen, performing flicker detection on the reference display screen to obtain a first candidate flicker value set corresponding to the reference display screen, the first candidate flicker value set containing a plurality of first candidate flicker values, each settable value in the first value interval corresponding to a first candidate flicker value;

[0043] sorting the first candidate flicker values in the first candidate flicker value set, and defining the smallest first candidate flicker value as a reference flicker value;

[0044] The range of the first value interval is 1-256 or 1-512.

[0045] Further, the calculation module is specifically used for:

[0046] determining an interval threshold a based on a VCOM register value corresponding to a minimum flicker value of a plurality of display screens in the same batch;

[0047] defining the base value as n, and a second value interval of a VCOM register of the subordinate display screen is (n-a, n+a).

[0048] Further, the second detection module is specifically used for:

[0049] traversing the second value interval, performing flicker detection on the subordinate display screen to obtain a second candidate flicker value set corresponding to the subordinate display screen, the second candidate flicker value set containing a plurality of second candidate flicker values, each settable value in the second value interval corresponding to a second candidate flicker value;

[0050] when the second candidate flicker value set contains a second candidate flicker value equal to the reference flicker value, defining the second candidate flicker value equal to the reference flicker value as a first candidate flicker value;

[0051] if the number of the first candidate flicker values is only one, defining the first candidate flicker value as a target flicker value; if the number of the first candidate flicker values is more than one, defining any one of the first candidate flicker values as the target flicker value.

[0052] when there is no second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, and there is a second candidate flicker value less than the reference flicker value in the second candidate flicker value set, the second candidate flicker value less than the reference flicker value is defined as a second candidate flicker value;

[0053] if the number of the second candidate flicker values is only one, the second candidate flicker value is defined as a target flicker value; if the number of the second candidate flicker values is more than one, the maximum second candidate flicker value is defined as the target flicker value;

[0054] when all the second candidate flicker values in the second candidate flicker value set are greater than the reference flicker value, the minimum second candidate flicker value is defined as the target flicker value. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0056] Figure 1 a flow chart of the display screen VCOM voltage calibration method of the present application;

[0057] Figure 2 a structural block diagram of the display screen VCOM voltage calibration device of the present application. DETAILED DESCRIPTION

[0058] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0059] In the description of the embodiments of the application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the embodiments of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0060] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0061] In the embodiments of the application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0062] Embodiment one

[0063] With reference to Figure 1 , the first embodiment of the application, the display screen VCOM voltage calibration method, the method comprises:

[0064] S1: based on the working cycle of the display screen burning device, the powered-on display screens are divided into reference display screens and slave display screens in order; further, the step specifically comprises:

[0065] Obtain the working state of the display screen burning device, the working state of the display screen burning device includes starting and closing, and the time from the starting of the display screen burning device to the closing is a working cycle;

[0066] In any working cycle of the display screen burning device, the first powered-on display screen is defined as the reference display screen, and the subsequent powered-on display screen is defined as the slave display screen.

[0067] S2: traversing a first value interval of a VCOM register of the reference display screen to obtain a reference flicker value of the reference display screen; wherein the first value interval includes all settable values of the VCOM register; further, the step specifically includes:

[0068] traversing the first value interval of the VCOM register of the reference display screen to perform flicker detection on the reference display screen, and obtaining a first candidate flicker value set corresponding to the reference display screen, the first candidate flicker value set including a plurality of first candidate flicker values, each settable value in the first value interval corresponding to a first candidate flicker value;

[0069] sorting the first candidate flicker values in the first candidate flicker value set, and defining the smallest first candidate flicker value as the reference flicker value;

[0070] wherein the range of the first value interval is 1-256 or 1-512.

[0071] S3: setting a settable value in the first value interval corresponding to the reference flicker value as a base value, and burning a VCOM voltage value corresponding to the base value into a Driver IC of the reference display screen; in the embodiment, the burning method is known to those skilled in the art, and thus is not described in detail herein.

[0072] S4: obtaining a second value interval of a VCOM register of the slave display screen according to the base value; wherein the second value interval includes part of settable values of the VCOM register; further, the step specifically includes:

[0073] determining an interval threshold a based on a VCOM register value corresponding to the minimum flicker value of the multiple display screens in the same batch;

[0074] defining the base value as n, and the second value interval of the VCOM register of the slave display screen as (n-a, n+a); in the embodiment, the value of a is generally 20, and n is usually in the middle of the first value interval.

[0075] S5: traversing the second value interval, and obtaining a target flicker value corresponding to the slave display screen according to the reference flicker value; further, the step specifically includes:

[0076] traversing the second value interval to perform flicker detection on the slave display screen, and obtaining a second candidate flicker value set corresponding to the slave display screen, the second candidate flicker value set including a plurality of second candidate flicker values, each settable value in the second value interval corresponding to a second candidate flicker value;

[0077] When there is a second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, the second candidate flicker value equal to the reference flicker value is defined as the first candidate flicker value;

[0078] If the number of the first candidate flicker values is only one, the first candidate flicker value is defined as the target flicker value; if the number of the first candidate flicker values is more than one, any one of the first candidate flicker values is defined as the target flicker value;

[0079] When there is no second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, and there is a second candidate flicker value less than the reference flicker value in the second candidate flicker value set, the second candidate flicker value less than the reference flicker value is defined as the second candidate flicker value;

[0080] If the number of the second candidate flicker values is only one, the second candidate flicker value is defined as the target flicker value; if the number of the second candidate flicker values is more than one, the largest second candidate flicker value is defined as the target flicker value;

[0081] When all the second candidate flicker values in the second candidate flicker value set are greater than the reference flicker value, the smallest second candidate flicker value is defined as the target flicker value.

[0082] S6: The settable value in the second value interval corresponding to the target flicker value is defined as the mark value, and the VCOM voltage value corresponding to the mark value is burned into the Driver IC of the slave display screen; in the embodiment, the burning method is well known to those skilled in the art, and therefore will not be described in detail herein.

[0083] The display screen VCOM voltage calibration method of the embodiment of the present application divides the display screens of the same working period into reference display screens and subordinate display screens, then takes the reference flicker value and the reference value of the reference display screens as the standard, obtains a second value interval according to the reference value, makes the subordinate display screens find the reference value and the corresponding target flicker value in the second value interval, and respectively burns the VCOM voltage values corresponding to the reference value and the reference value into the corresponding display screen Driver IC, thereby completing the calibration of the display screen VCOM voltage. Since the length of the second value interval is smaller than the length of the first value interval, compared with the full traversal of the first value interval of the display screens in the same working period, the display screen VCOM voltage calibration efficiency is greatly improved, and the production efficiency is improved. According to the principle that the display screen burning equipment burns the display screens of the same batch in the same working period, the reference flicker value and the reference value are taken as the standard to obtain the reference value and the target flicker value, which also ensures that the flicker states of the display screens in the same working period are consistent, so that the screens obtained by subsequent assembly production have good flicker states.

[0084] Embodiment two

[0085] With reference to Figure 2 The present application also provides a display screen VCOM voltage calibration device, which comprises:

[0086] A power-on module is configured to divide the display screens powered on according to the working period of the display screen burning equipment into reference display screens and subordinate display screens in a sequence.

[0087] A first detection module is configured to traverse a first value interval of the VCOM register of the reference display screen to obtain a reference flicker value of the reference display screen, wherein the first value interval comprises all settable values of the VCOM register.

[0088] A first burning module is configured to set the settable values in the first value interval corresponding to the reference flicker value to reference values, and burn the VCOM voltage values corresponding to the reference values into the Driver IC of the reference display screen.

[0089] A calculation module is configured to obtain a second value interval of the VCOM register of the subordinate display screen according to the reference value, wherein the second value interval comprises part of the settable values of the VCOM register.

[0090] A second detection module is configured to traverse the second value interval and obtain a target flicker value corresponding to the subordinate display screen according to the reference flicker value.

[0091] The second burning module is configured to set a value in a second value interval corresponding to a target flicker value as a standard value, and burn a VCOM voltage value corresponding to the standard value into a driver IC of the slave display screen.

[0092] Further, the power-on module is specifically configured to:

[0093] obtain a working state of the display screen burning device, the working state of the display screen burning device including starting and closing, and taking a time from starting to closing of the display screen burning device as a working cycle;

[0094] In any working cycle of the display screen burning device, a first display screen powered on is defined as a reference display screen, and a display screen powered on subsequently is defined as a slave display screen.

[0095] Further, the first detection module is specifically configured to:

[0096] traverse a first value interval of a VCOM register of the reference display screen, perform flicker detection on the reference display screen, and obtain a first candidate flicker value set corresponding to the reference display screen, the first candidate flicker value set including a plurality of first candidate flicker values, and each settable value in the first value interval corresponding to a first candidate flicker value;

[0097] sort the first candidate flicker values in the first candidate flicker value set, and define a smallest first candidate flicker value as a reference flicker value;

[0098] The first value interval ranges from 1 to 256 or from 1 to 512.

[0099] Further, the calculation module is specifically configured to:

[0100] determine an interval threshold a based on a VCOM register value corresponding to a minimum flicker value of a plurality of display screens in the same batch;

[0101] define a base value as n, and a second value interval of a VCOM register of the slave display screen is (n-a, n+a).

[0102] Further, the second detection module is specifically configured to:

[0103] traverse the second value interval, perform flicker detection on the slave display screen, and obtain a second candidate flicker value set corresponding to the slave display screen, the second candidate flicker value set including a plurality of second candidate flicker values, and each settable value in the second value interval corresponding to a second candidate flicker value;

[0104] When there is a second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, the second candidate flicker value equal to the reference flicker value is defined as the first candidate flicker value;

[0105] If the number of the first candidate flicker values is only one, the first candidate flicker value is defined as the target flicker value; if the number of the first candidate flicker values is more than one, any one of the first candidate flicker values is defined as the target flicker value;

[0106] When there is no second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, and there is a second candidate flicker value less than the reference flicker value in the second candidate flicker value set, the second candidate flicker value less than the reference flicker value is defined as the second candidate flicker value;

[0107] If the number of the second candidate flicker values is only one, the second candidate flicker value is defined as the target flicker value; if the number of the second candidate flicker values is more than one, the largest second candidate flicker value is defined as the target flicker value;

[0108] When all the second candidate flicker values in the second candidate flicker value set are greater than the reference flicker value, the smallest second candidate flicker value is defined as the target flicker value.

[0109] The display screen VCOM voltage calibration device of the embodiment of the present application, by dividing the display screens of the same working period into reference display screens and subordinate display screens, then taking the reference flicker value and the reference value of the reference display screen as the standard, obtaining the second value interval according to the reference value, making the subordinate display screen find the reference value and the corresponding target flicker value in the second value interval, and respectively burning the VCOM voltage values corresponding to the reference value and the reference value into the corresponding display screen Driver IC, completing the calibration of the display screen VCOM voltage, since the value length of the second value interval is smaller than the value length of the first value interval, compared with the full traversal of the first value interval of the display screen in the same working period, the display screen VCOM voltage calibration efficiency is greatly improved, and the production efficiency is improved, and according to the principle that the same production shift will not burn the display screens of different batches, that is, the display screen burning equipment burns the display screens of the same batch in the same working period, the reference flicker value and the reference value are taken as the standard to obtain the reference value and the target flicker value, and the flicker state of the display screen in the same working period is also ensured to be consistent, so that the screen obtained by subsequent assembly production has a good flicker state.

[0110] Embodiment three

[0111] The third embodiment of the present application is based on the same inventive concept, and the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the display screen VCOM voltage calibration method of the above-mentioned embodiments.

[0112] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered a list of executable instructions for implementing logic functions, and can be specifically embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device, such as a computer-based system, a system including a processor, or other system that can take instructions from an instruction execution system, apparatus, or device, or in conjunction with these instruction execution systems, apparatus, or devices. For the purpose of this specification, "computer-readable medium" can be any device containing storage, communication, propagation, or transmission of programs for instruction execution systems, apparatus, or devices, or in conjunction with these instruction execution systems, apparatus, or devices.

[0113] More specific examples (a non-exhaustive list) of the computer- readable medium include the following: an electrical connection having one or more wires (electrical apparatus), a portable computer diskette (magnetic apparatus), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, for instance via an optical scanner, or other suitable device and then compiled, interpreted, or processed in a suitable manner, if necessary, and then stored in a computer memory.

[0114] The memory can include mass storage for data or instructions. By way of example, and not limitation, the memory can include a Hard Disk Drive (HDD), a floppy disk drive, a solid-state drive (SSD), flash memory, a USB drive, a magneto-optical disk, optical disks such as Compact Disk (CD) and Digital Versatile Disk (DVD), or a combination of two or more of these. The memory can be removable and / or non-removable (or fixed) as appropriate. The memory can be internal or external as appropriate. In certain embodiments, the memory is a nonvolatile memory. In certain embodiments, the memory includes a Read-Only Memory (ROM) and a Random Access Memory (RAM). The ROM can be a mask-programmed ROM, a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Electrically Alterable Read-Only Memory (EAROM), or a FLASH memory, or a combination of two or more of these, as appropriate. The RAM can be a Static Random-Access Memory (SRAM) or a Dynamic Random Access Memory (DRAM), which can be a Fast Page Mode Dynamic Random Access Memory (FPMDRAM), an Extended Data Output Dynamic Random Access Memory (EDODRAM), a Synchronous Dynamic Random-Access Memory (SDRAM), or the like, as appropriate.

[0115] Embodiment Four

[0116] The fourth embodiment of the present application is based on the same inventive concept, and the present application provides a terminal, which comprises a processor, a memory, the processor and the memory are in communication with each other, the memory is used for storing instructions, and the processor is used for executing the instructions in the memory to execute the display screen VCOM voltage calibration method of the above-mentioned embodiments.

[0117] It should be understood that parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be realized by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if realized by hardware, and as in another embodiment, any one or a combination of the following technologies known in the art can be used: discrete logic circuit with logic gate circuit for implementing logic functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA), etc.

[0118] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] The above-mentioned additional technical features can be used freely and superimposed by those skilled in the art without conflict.

[0120] The above-mentioned only the preferred embodiments of the present application, and not to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principles of the present application, etc., should be included in the protection scope of the present application.

Claims

1. A method of VCOM voltage calibration for a display panel, characterized in that, The method comprises: based on the working cycle of the display screen burning device, the powered-on display screens are divided into reference display screens and subordinate display screens in order; traverse the first value interval of the VCOM register of the reference display screen to obtain the reference flicker value of the reference display screen; wherein the first value interval includes all settable values of the VCOM register; let the settable value in the first value interval corresponding to the reference flicker value be the base value, and burn the VCOM voltage value corresponding to the base value into the Driver IC of the reference display screen; according to the base value, obtain the second value interval of the VCOM register of the subordinate display screen; wherein the second value interval includes part of the settable values of the VCOM register; traverse the second value interval, and obtain the target flicker value corresponding to the subordinate display screen according to the reference flicker value; let the settable value in the second value interval corresponding to the target flicker value be the index value, and burn the VCOM voltage value corresponding to the index value into the Driver IC of the subordinate display screen.

2. The display screen VCOM voltage calibration method of claim 1, wherein, The step of dividing the powered-on display screens into reference display screens and subordinate display screens based on the working cycle of the display screen burning device specifically comprises: obtain the working state of the display screen burning device, the working state of the display screen burning device includes starting and closing, and the time from starting to closing of the display screen burning device is a working cycle; in any working cycle of the display screen burning device, define the first powered-on display screen as the reference display screen, and define the subsequent powered-on display screens as the subordinate display screens.

3. The method of claim 1, wherein, The step of traversing the first value interval of the VCOM register of the reference display screen to obtain the reference flicker value of the reference display screen specifically comprises: traverse the first value interval of the VCOM register of the reference display screen, and perform flicker detection on the reference display screen to obtain a first candidate flicker value set corresponding to the reference display screen, the first candidate flicker value set includes a plurality of first candidate flicker values, and each settable value in the first value interval corresponds to a first candidate flicker value; sort the first candidate flicker values in the first candidate flicker value set, and define the smallest first candidate flicker value as the reference flicker value; wherein the range of the first value interval is 1-256 or 1-512.

4. The method of claim 1, wherein, The step of obtaining the second value interval of the VCOM register of the subordinate display screen according to the base value specifically comprises: based on the VCOM register value corresponding to the minimum flicker value of the display screens in the same batch, determine the interval threshold a; define the base value as n, and the second value interval of the VCOM register of the subordinate display screen is (n-a, n+a).

5. The method of claim 1, wherein, The step of traversing the second value interval and obtaining the target flicker value corresponding to the slave display screen according to the reference flicker value specifically comprises: traversing the second value interval, performing flicker detection on the slave display screen, and obtaining a second candidate flicker value set corresponding to the slave display screen, wherein the second candidate flicker value set contains a plurality of second candidate flicker values, and each settable value in the second value interval corresponds to a second candidate flicker value; when there is a second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, the second candidate flicker value equal to the reference flicker value is defined as a first candidate flicker value; if the number of the first candidate flicker values is only one, the first candidate flicker value is defined as the target flicker value; if the number of the first candidate flicker values is more than one, any one of the first candidate flicker values is defined as the target flicker value; when there is no second candidate flicker value equal to the reference flicker value in the second candidate flicker value set, and there is a second candidate flicker value less than the reference flicker value in the second candidate flicker value set, the second candidate flicker value less than the reference flicker value is defined as a second candidate flicker value; if the number of the second candidate flicker values is only one, the second candidate flicker value is defined as the target flicker value; if the number of the second candidate flicker values is more than one, the largest second candidate flicker value is defined as the target flicker value; when all the second candidate flicker values in the second candidate flicker value set are greater than the reference flicker value, the smallest second candidate flicker value is defined as the target flicker value.

6. A display panel VCOM voltage calibration apparatus, characterized by, The device comprises: a power-on module configured to divide display screens powered on in a sequence according to a working period of a display screen burning device into a reference display screen and a slave display screen; a first detection module configured to traverse a first value interval of a VCOM register of the reference display screen to obtain a reference flicker value of the reference display screen; wherein the first value interval includes all settable values of the VCOM register; a first burning module configured to define a settable value in the first value interval corresponding to the reference flicker value as a base value, and burn a VCOM voltage value corresponding to the base value into a Driver IC of the reference display screen. The computing module is configured to obtain a second value interval of the VCOM register of the slave display screen according to the base value, wherein the second value interval includes part of the settable values of the VCOM register; The second detecting module is configured to traverse the second value interval and obtain a target flicker value corresponding to the slave display screen according to the base flicker value; The second burning module is configured to set a settable value in the second value interval corresponding to the target flicker value as a mark value, and burn the VCOM voltage value corresponding to the mark value into the Driver IC of the slave display screen.

7. The display screen VCOM voltage calibration apparatus of claim 6, wherein, The power-on module is specifically configured to: obtain the working state of the display screen burning device, wherein the working state of the display screen burning device includes starting and closing, and the time from starting to closing of the display screen burning device is a working cycle; in any working cycle of the display screen burning device, define a first block of powered-on display screen as a reference display screen, and define a subsequently powered-on display screen as a slave display screen.

8. The display screen VCOM voltage calibration apparatus of claim 6, wherein, The first detecting module is specifically configured to: traverse a first value interval of the VCOM register of the reference display screen, perform flicker detection on the reference display screen, and obtain a first candidate flicker value set corresponding to the reference display screen, wherein the first candidate flicker value set includes a plurality of first candidate flicker values, and each settable value in the first value interval corresponds to a first candidate flicker value; sort the first candidate flicker values in the first candidate flicker value set, and define the smallest first candidate flicker value as a base flicker value; wherein the range of the first value interval is 1-256 or 1-512.

9. The display screen VCOM voltage calibration apparatus of claim 6, wherein, The computing module is specifically configured to: determine an interval threshold a based on the VCOM register value corresponding to the minimum flicker value of the multiple display screens in the same batch; define the base value as n, and the second value interval of the VCOM register of the slave display screen is (n-a, n+a).

10. The display screen VCOM voltage calibration apparatus of claim 6, wherein, The second detecting module is specifically configured to: traverse the second value interval, perform flicker detection on the slave display screen, and obtain a second candidate flicker value set corresponding to the slave display screen, wherein the second candidate flicker value set includes a plurality of second candidate flicker values, and each settable value in the second value interval corresponds to a second candidate flicker value; when the second candidate flicker value set includes a second candidate flicker value equal to the base flicker value, set the second candidate flicker value equal to the base flicker value as a first candidate flicker value. if the number of the first candidate flicker values is only one, defining the first candidate flicker value as a target flicker value; if the number of the first candidate flicker values is more than one, defining any one of the first candidate flicker values as the target flicker value; if there is no second candidate flicker value equal to the reference flicker value in the second candidate flicker value set and there is a second candidate flicker value less than the reference flicker value in the second candidate flicker value set, defining the second candidate flicker value less than the reference flicker value as a second candidate flicker value; if the number of the second candidate flicker values is only one, defining the second candidate flicker value as a target flicker value; if the number of the second candidate flicker values is more than one, defining the maximum second candidate flicker value as the target flicker value; if all the second candidate flicker values in the second candidate flicker value set are greater than the reference flicker value, defining the minimum second candidate flicker value as the target flicker value.

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