CN114974152A

CN114974152A - Display screen flicker correction method and display screen flicker correction system

Info

Publication number: CN114974152A
Application number: CN202110213683.9A
Authority: CN
Inventors: 陶炳俊; 戴亚丽
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd; Guangzhou Shirui Electronics Co Ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2022-08-30
Anticipated expiration: 2041-02-25
Also published as: CN114974152B

Abstract

The embodiment of the application discloses a display screen flicker correction method, which is applied to a display screen flicker correction system, wherein the system comprises a control mainboard, a display screen, a color analyzer and a PC (personal computer) host, and the method comprises the following steps: the control board receives the correction instruction, calls a preset flicker picture under a default VCOM register value and is arranged in the control board based on the correction instruction, and sends the picture to the display screen for displaying. The flicker picture corresponding to the model of the display screen is not needed to be generated by using the signal generator, the connection process of the signal generator and the control panel is not needed, the hardware cost can be saved, and the working hours can be reduced. The color analyzer reads a flicker value corresponding to a preset flicker picture, and sends the flicker value to the PC host, the PC host adjusts a default VCOM register value based on the flicker value, obtains flicker correction values under different VCOM register values, writes a minimum value in the flicker correction values into the display screen through the control panel, and the display screen performs picture display with the VCOM register value corresponding to the minimum value.

Description

Display screen flicker correction method and display screen flicker correction system

Technical Field

The application relates to the technical field of display, in particular to a display screen flicker correction method and a display screen flicker correction system.

Background

The liquid crystal display is one of the most widely used flat panel displays at present, and the liquid crystal display screen is a core component of the liquid crystal display and has the advantages of low radiation, thin thickness and the like; when the liquid crystal display screen is applied, alternating current driving is needed, so that the liquid crystal is driven by positive and negative polarities between each frame, when the voltage difference applied to the liquid crystal by the two polarities is inconsistent, the brightness of the transmitted light between the two frames is different, so that flicker is caused, and the visual fatigue of human eyes is influenced. In the production process of the whole machine, the display screen is driven to display a specific picture (the pictures are different in different sizes, different models or different suppliers), and then the VCOM value of the display screen is adjusted, so that the flicker degree can be improved.

In the correlation technique, need use specific signal generator, according to the display screen model output and predetermine the scintillation picture, be connected to whole quick-witted android control panel through the HDMI line, drive the display screen and show and predetermine the scintillation picture, then carry out the scintillation to this predetermined scintillation picture and rectify. The method needs to additionally increase the investment of signal generator equipment and the investment of HDMI wires, namely, higher hardware cost is needed, and each complete machine needs to additionally increase the plugging and unplugging action of the HDMI, namely, more working hours are consumed.

Disclosure of Invention

The embodiment of the application provides a display screen flicker correction method and a display screen flicker correction system, and aims to solve the technical problems of how to reduce hardware cost and man-hour when the display screen flicker correction is carried out on an interactive flat panel in the related art. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a display screen flicker correction method, which is applied to a display screen flicker correction system, where the system includes a control panel, a display screen, a color analyzer, and a PC host, and the method includes:

the control panel receives a correction instruction, calls a built-in preset flicker picture under a default VCOM register value based on the correction instruction, and sends the preset flicker picture to the display screen for displaying;

the color analyzer reads a flicker test value corresponding to the preset flicker picture and sends the flicker test value to the PC host;

the PC host receives the flicker test value, adjusts the default VCOM register value based on the flicker test value, acquires flicker correction values under different VCOM register values, and writes the VCOM register value corresponding to the minimum value in the flicker correction values into the display screen through the control board;

and the display screen displays the picture by using the VCOM register value corresponding to the minimum value.

In a second aspect, an embodiment of the present application provides a display screen flicker correction system, where the system includes: the system comprises a control panel, a display screen, a color analyzer and a PC host;

the control panel is used for receiving a correction instruction, calling a built-in preset flicker picture under a default VCOM register value based on the correction instruction, and sending the preset flicker picture to the display screen for displaying;

the color analyzer is used for reading a flicker test value corresponding to the preset flicker picture and sending the flicker test value to the PC host;

the PC host is used for receiving the flicker test value, adjusting the default VCOM register value based on the flicker test value, acquiring flicker correction values under different VCOM register values, and writing the VCOM register value corresponding to the minimum value in the flicker correction values into the display screen through the control board;

and the display screen is used for displaying pictures by using the VCOM register value corresponding to the minimum value.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

the scheme of the embodiment of the application is applied to a display screen flicker correction system when being executed, the system comprises a control mainboard, a display screen, a color analyzer and a PC host, the control board receives a correction instruction, calls a built-in preset blinking picture at a default VCOM register value based on the correction instruction, and sending the preset flicker picture to the display screen for displaying, reading a flicker test value corresponding to the preset flicker picture by the color analyzer, and sending the flicker test value to the PC host, the PC host receiving the flicker test value, and adjusting the default VCOM register value based on the flicker test value, obtaining flicker correction values at different VCOM register values, and writing the VCOM register value corresponding to the minimum value in the flicker correction value into the display screen through the control board, wherein the display screen displays the picture by using the VCOM register value corresponding to the minimum value. Through the method, the display screen directly displays the preset flicker picture built in the control panel, the signal generator is not needed to be used for generating the preset flicker picture, the connection process of the signal generator and the control panel is not needed, the hardware cost can be saved, and the working hours can be reduced. And then, the PC host adjusts the VCOM register value according to the flicker value of the built-in preset flicker picture measured by the color analyzer, determines the VCOM register value corresponding to the minimum value in the flicker values of all the adjusted flicker pictures, and finishes the flicker correction process of the display screen.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a system architecture diagram of a display screen flicker correction system according to an embodiment of the present disclosure;

FIG. 2 is a schematic flowchart illustrating a method for correcting flicker of a display screen according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating a display screen flicker correction method according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram illustrating a display screen flicker correction method according to an embodiment of the present disclosure;

FIG. 5 is a flowchart illustrating a method for correcting flicker of a display screen according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a display screen flicker correction system according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

In the following description, the terms "first" and "second" are used for descriptive purposes only and are not intended to indicate or imply relative importance. The following description provides embodiments of the present application, where different embodiments may be substituted or combined, and thus the present application is intended to include all possible combinations of the same and/or different embodiments described. Thus, if one embodiment includes feature A, B, C and another embodiment includes feature B, D, then this application should also be considered to include an embodiment that includes one or more of all other possible combinations of A, B, C, D, even though this embodiment may not be explicitly recited in text below.

The following description provides examples, and does not limit the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements described without departing from the scope of the disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described methods may be performed in an order different than the order described, and various steps may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined into other examples.

The hardware part of the interactive flat panel is composed of a touch display module, a complete machine module (including a controller) and the like, and is combined together by a whole structural member, wherein the touch display module comprises a display screen, a touch assembly and a backlight assembly, the backlight assembly is used for providing a backlight source for the display screen, the display screen generally adopts a liquid crystal display device and is used for displaying pictures, and the touch assembly is arranged on the display screen or at the front end of the display screen and is used for collecting touch data generated by touch operation of a user and sending the collected touch data to the complete machine module for processing.

In actual use, the image data is displayed on the display screen of the interactive flat panel, when a user clicks the content displayed on the display screen through a touch object such as a finger or a touch pen, for example, clicks a graphical button displayed on the display screen, the touch component of the interactive flat panel acquires touch data, so that the touch component converts the touch data into coordinate data of a touch point and then transmits the coordinate data to the whole module, or transmits the touch data to the whole module and converts the coordinate data of the touch point into coordinate data of the touch point, and the whole module acquires the coordinate data of the touch point and then transmits the coordinate data to a corresponding program to realize corresponding control operation, so that the display content of the display screen is driven to change, and diversified display and operation effects are realized.

Touch components are distinguished from technical principles and can be divided into five basic categories; a vector pressure sensing technology touch component, a resistance technology touch component, a capacitance technology touch component, an electromagnetic technology touch screen, an infrared technology touch component and a surface acoustic wave technology touch component. According to the working principle of the touch assembly and the medium for transmitting information, the touch assembly can be divided into four categories: resistive, capacitive, electromagnetic, infrared, and surface acoustic wave.

In the embodiment of the application, the interactive flat panel is equivalent to a display screen with a complete machine module and a touch control function, the complete machine module is a built-in module of the interactive flat panel and does not comprise a main control module, a low-performance Android system runs in the complete machine module, and the complete machine module mainly achieves display processing and touch control data processing functions of the interactive flat panel. The hardware configuration of the whole machine module is low, and the installation of other application software is not supported except for configuring an operating system and basic processing software (such as whiteboard writing software and annotation application software). If the interactive flat panel needs to realize other functions, the main control module needs to be accessed, corresponding functions are realized by installing relevant application software on the main control module, for example, the files need to be displayed, the relevant display software needs to be installed on the main control module, the video conference function needs to be realized, the video conference software needs to be installed on the main control module, and the like. The main control module is an Open plug capable Specification (OPS) module on the interactive tablet, and application software running on the interactive tablet is installed on the main control module. The main control module may be an operating system such as Windows and high-performance Android, for example, the main control module may be a PC module and a high-performance Android module, which may be understood as a computer.

The interactive panel at least comprises signal source channels such as an Android channel, a host channel and an HDMI channel, wherein the signal source channels are used for receiving input signals of different signal sources, so that the interactive panel can be switched among the different signal source channels to present media contents provided by the different signal sources. The Android channel is a working channel of the whole interactive tablet computer module and is used for presenting media contents of the whole interactive tablet computer module. The signal source accessed by the host channel is the host module, so that the host channel is used for presenting the media data input by the host module of the interactive tablet. The HDMI channel is used to present media data of a signal source accessed through an HDMI interface of the interactive tablet. In addition, when the interactive tablet is in the host channel or the HDMI channel, the display screen of the interactive tablet actually displays two system pictures, one is a picture of an Android channel, and the other is a picture of the host channel or the HDMI channel, and the picture of the Android channel has a partially transparent area, so that the picture of the host channel or the HDMI channel is displayed in the transparent area, and the displayed picture displayed finally is a display picture of the two channels. For example, if the picture of the Android channel is a sidebar, the picture of the Android channel is a transparent region except for the display region of the sidebar, so that the display picture of the host channel or the HDMI channel can be displayed in the transparent region, and the result presented to the user is the picture of the interactive flat panel display host channel or the HDMI channel, and the sidebar of the Android channel is displayed in an overlapping manner on the picture. Specifically, the whole module presets the area size of the display frame of the host channel or the HDMI channel, and the like, so that when receiving the touch data of the touch component, the whole module sends the touch data in the preset area to the host channel or the HDMI channel for response.

More specifically, the whole machine module comprises a main control board card, peripheral circuits such as a main control chip and a power circuit of the main control chip are arranged on the main control board card, a plurality of communication interfaces for communication are further arranged, and the plurality of communication interfaces are all connected with the main control chip. The plurality of communication interfaces specifically include a serial interface, a USB interface, an HDMI interface, a Type-C interface, and/or a Touch line port (Touch out port), and the like. The complete machine module is connected with the main control module through a serial interface, and interfaces such as a USB interface, an HDMI interface and the like are in communication connection with other equipment or terminals, so that input signals of different signal sources are received, and corresponding signal source channels are formed. For example, the whole module is connected with the main control module through the serial interface to form a host channel, so as to receive and present media content sent by the host channel, or is connected with the external device through the HDMI interface to form an HDMI channel, so as to present media data input by the external device.

The main control chip is provided with a first functional unit and a second functional unit which are two independent functional units in total, the Android system is installed on the first functional unit, and the second functional unit is used for switching and controlling the signal source channel of the interactive flat plate. The first functional unit and the second functional unit may be implemented by different codes running on the same main control chip, or may be implemented by different codes on two main control chips (at this time, the number of the main control chips is two).

When the signal source channel of the interactive flat plate is an Android channel, the whole machine module represents that the interactive flat plate is in a working channel of the whole machine module and is used for presenting media contents of the whole machine module. At this time, when the complete machine module receives the touch data sent by the touch component, the Android system performs compatibility processing of the touch data (the touch data generated by different types of touch components are processed into data in a uniform format through the compatibility processing, so that the processing process of the Android system can perform identification and response), performs operation response of the touch data, and executes corresponding operation. When the signal source channel of the interactive panel is the host channel, the whole machine module receives touch data sent by the touch component, firstly, the Android system performs compatibility processing on the touch data, and then the Android system forwards the touch data generated in the display screen area of the host channel to the host channel through the second function unit for response according to the preset area size of the display screen of the host channel. When the signal source channel of the interactive panel is the HDMI channel, the complete machine module receives the touch data sent by the touch component, firstly, the Android system performs compatibility processing on the touch data, performs operation response on the touch data, and executes corresponding operation. And then, the Android system forwards the Touch data generated in the display screen area of the HDMI channel to a Touch line port (Touch out port) through a second function unit according to the preset area size of the display screen of the HDMI channel, and the Touch line port (Touch out port) responds to the Touch data through an external device.

Referring to fig. 1, a schematic architecture diagram of a display flicker correction system provided in an embodiment of the present application includes a first terminal 110, a color analyzer 120, and a second terminal 130, where the first terminal 110 includes a control board 102 and a display 104.

Wherein the first terminal 110 includes a first port 112 and a second port 114; color analyzer 120 includes a first port 122 and a second port 124; the second terminal 130 includes a first port 132 and a second port 134. The first port 132 and the second port 134 of the second terminal 130 are both USB ports. The first port 122 of the first terminal 110 is connected with the first port 132 of the second terminal 130 through a USB serial port line, and the second port 114 of the first terminal 110 is connected with the first port 122 of the color analyzer 120; the second port 124 of the color analyzer is connected to the second port 134 of the second terminal 130.

The first terminal 110 may be various electronic devices with a display screen, including but not limited to a flat panel television, a CRT television, a rear projection television, a portable computer, a desktop computer, and the like, and if the first terminal 110 is a television, the control system corresponding to the first terminal 110 may be an android system. The first terminal 110 may be hardware or software. When the first terminal 110 is software, it may be installed in the electronic devices listed above. Which may be implemented as multiple software or software modules (e.g., to provide distributed services) or as a single software or software module, and is not particularly limited herein. When the first terminal 110 is a hardware, a display device and a camera may be further installed thereon, and the display of the display device may be various devices capable of implementing a display function, for example: the display device may be a Cathode ray tube (CR) display, a Light-emitting diode (LED) display, an electronic ink screen, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), or the like. The user may utilize the display device on the first terminal 110 to view information such as displayed text, pictures, videos, and the like.

The second terminal 130 may be various electronic devices with a display screen, including but not limited to a flat panel television, a CRT television, a rear projection television, a portable computer, a desktop computer, a mobile phone, a tablet, and the like, and if the second terminal 130 is a computer, the control system corresponding to the second terminal 130 may be an android system or an IOS system. The second terminal 130 may be hardware or software. When the second terminal 130 is software, it may be installed in the electronic devices listed above. Which may be implemented as multiple software or software modules (e.g., to provide distributed services) or as a single software or software module, and is not particularly limited herein. When the second terminal 130 is a hardware, a display device and a camera may be further installed thereon, and the display of the display device may be various devices capable of implementing a display function, for example: the display device may be a Cathode ray tube (CR) display, a Light-emitting diode (LED) display, an electronic ink screen, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), or the like. The user can view information such as displayed text, pictures, videos, etc. using the display device on the second terminal 130.

For convenience of description, the first terminal is taken as an interactive tablet and the second terminal is taken as a personal computer for example.

It should be noted that, the number of each port in each module is merely explained as an example, and the specific number of each port is not limited in the embodiment of the present application.

When the scheme of the embodiment of the application is executed, the scheme is applied to a display screen flicker correction system, the system comprises a control main board, a display screen, a color analyzer and a PC host, the control board receives a correction instruction, calls a built-in preset flicker picture under a default VCOM register value based on the correction instruction, sends the preset flicker picture to the display screen for display, the color analyzer reads a flicker test value corresponding to the preset flicker picture and sends the flicker test value to the PC host, the PC host receives the flicker test value, adjusts the default VCOM register value based on the flicker test value, obtains preset flicker correction values under different VCOM register values, and writes a VCOM register value corresponding to the minimum value in the preset flicker correction values into the display screen through the control board, and the display screen displays the picture by using the VCOM register value corresponding to the minimum value. Through the method, the display screen directly displays the preset flicker picture built in the control panel, the signal generator is not needed to be used for generating the preset flicker picture, the connection process of the signal generator and the control panel is not needed, the hardware cost can be saved, and the working hours can be reduced. And then, the PC host adjusts the VCOM register value according to the flicker value of the built-in preset flicker picture measured by the color analyzer, determines the VCOM register value corresponding to the minimum value in the flicker values of all the adjusted flicker pictures, and finishes the flicker correction process of the display screen.

Referring to fig. 2, a schematic flow chart of a flicker correction method for a display screen according to an embodiment of the present application is shown, where the method is applied to a flicker correction system for a display screen, and the system includes a control board, a display screen, a color analyzer, and a PC host. As shown in fig. 2, the method of the embodiment of the present application may include the steps of:

s201, the control board receives a correction instruction, calls a preset flicker picture under a default VCOM register value based on the correction instruction, and sends the preset flicker picture to the display screen for displaying.

The correction instruction is sent to the control panel by the PC host and is used for indicating the control panel to read preset flicker picture data stored in a memory of the control panel in advance, and indicating the control panel to send the preset flicker picture data to the display screen, and the display screen displays a preset flicker picture based on the preset flicker picture data. The PC host is provided with a flicker correction tool, and sends a correction instruction to the control panel when a flicker correction program is operated.

It is understood that the value of the VCOM register corresponding to the preset blinking picture data stored in advance in the control board is referred to as a default VCOM register value. The preset flashing picture is a specific flashing picture based on the type of the display screen, and the specific flashing picture is a color picture with a flashing phenomenon. The display screens with different sizes, different models and the display screens of different manufacturers have different preset flickering pictures. The flicker phenomenon is that when a page of the liquid crystal display is seen, the page has a flicker feeling. Because the liquid crystal display screen adopts AC alternating current driving principle, after each frame of refreshing, all pixel points need to be changed once, if the voltage originally applied to the two end electrodes of the sub-pixels of the liquid crystal display screen is positive polarity voltage (the difference between the voltage of the SOURCE voltage and the voltage of the VCOM electrode in the two end electrodes of the liquid crystal display screen is positive, the positive polarity voltage is obtained, and if the difference is negative, the negative polarity voltage is obtained), after one frame of picture refreshing, the negative polarity voltage is required to be switched. If the positive voltage and the negative voltage are not symmetrical at the moment, the picture can have the inconsistency of the brightness and the darkness of the image, which is the flicker phenomenon. Since the liquid crystal display screen is basically at 60Hz at present, namely refreshed for 60 times in one second, the feeling of human eyes to flicker is reduced from 30Hz, and when the frequency exceeds 60Hz, the feeling of human eyes to flicker is greatly reduced, and the human eyes cannot feel the existence of flicker.

S202, the color analyzer reads a flicker test value corresponding to the preset flicker picture and sends the flicker test value to the PC host.

Specifically, one end of the color analyzer is connected with the display screen, and the other end of the color analyzer is connected with the PC host, and is configured to measure a flicker value corresponding to a preset flicker picture displayed by the display screen, and call the flicker value corresponding to the preset flicker picture under the default VCOM register value at this time as a flicker test value. The color analyzer is also used for sending the flicker test value to the PC host.

S203, the PC host receives the flicker test value, adjusts the default VCOM register value based on the flicker test value, obtains flicker correction values under different VCOM register values, and writes the VCOM register value corresponding to the minimum value in the flicker correction values into the display screen through the control board.

It can be understood that, as shown in fig. 3, the internal register value of the driver chip and the VCOM voltage value are linearly varied, and the relationship between the VCOM voltage value and the flicker value is shown in fig. 4, and it can be seen that the flicker value and the VCOM voltage value have an approximately parabolic trend. From the driver chip manual, it can be found that the VCOM voltage value is linearly related to the VCOM value of the VCOM register inside the driver chip. Therefore, if the lowest point in the curve is found, that is, once the VCOM value of the VCOM register in the driving chip is set, the corresponding flicker value is the smallest, and at this time, the display effect of the lcd is the best, and the flicker is the smallest.

Specifically, the VCOM register value may be adjusted, the flicker value corresponding to different VCOM register values is referred to as a flicker correction value in the embodiment of the present application, the minimum flicker correction value is found by adjusting the VCOM register value, and further, the VCOM register value corresponding to the minimum flicker correction value is written into the display screen through the control board.

S204, the display screen displays the picture by the VCOM register value corresponding to the minimum value.

Specifically, after the VCOM register value corresponding to the minimum flicker correction value is determined, the display panel may perform image display based on the VCOM register value, and at this time, the image displayed by the display panel has no flicker phenomenon, or no flicker phenomenon that is perceptible to human eyes.

The scheme of the embodiment of the application is applied to a display screen flicker correction system when being executed, the system comprises a control mainboard, a display screen, a color analyzer and a PC host, the control board receives a correction instruction, calls a built-in preset blinking picture at a default VCOM register value based on the correction instruction, and sending the preset flicker picture to the display screen for displaying, reading a flicker test value corresponding to the preset flicker picture by the color analyzer, and sending the flicker test value to the PC host, the PC host receiving the flicker test value, and adjusting the default VCOM register value based on the flicker test value, obtaining flicker correction values at different VCOM registers, and writing the VCOM register value corresponding to the minimum value in the flicker correction value into the display screen through the control board, wherein the display screen displays the picture by using the VCOM register value corresponding to the minimum value. Through the method, the display screen directly displays the preset flicker picture built in the control panel, the signal generator is not needed to be used for generating the preset flicker picture, the connection process of the signal generator and the control panel is not needed, the hardware cost can be saved, and the working hours can be reduced. And then, the PC host adjusts the VCOM register value according to the flicker value of the built-in preset flicker picture measured by the color analyzer, determines the VCOM register value corresponding to the minimum value in the flicker values of all the adjusted flicker pictures, and finishes the flicker correction process of the display screen.

Please refer to fig. 5, which is a flowchart illustrating a display screen flicker correction method according to an embodiment of the present disclosure. As shown in fig. 5, the method of the embodiment of the present application may include the steps of:

s501, a control board receives a correction instruction sent by a PC host through a USB-to-serial port connecting line, calls a built-in preset flicker picture under a default VCOM register value based on the correction instruction, and sends the preset flicker picture to the display screen for displaying.

And S502, reading a flicker test value corresponding to the preset flicker picture by the color analyzer, and sending the flicker test value to the PC host through the USB connecting line.

Specifically, S501 to S502 can refer to S201 to S202 in fig. 2, and are not described herein again.

S503, the PC host receives the flicker test value, adjusts the default VCOM register value based on the flicker test value, obtains flicker correction values under different VCOM register values, and writes the VCOM register value corresponding to the minimum value in the flicker correction values into the display screen through the control board.

Specifically, the PC host adjusts the default VCOM register value based on the flicker test value, and since the internal register value of the driver chip and the VCOM voltage value are in a linear relationship and the VCOM voltage value and the flicker value are in a parabolic relationship, adjusting the VCOM register value may adjust the flicker value. In the process of adjusting the VCOM register value, each time the VCOM register value is adjusted, the adjusted VCOM register value is used as a default VCOM register value, the control board indicates the display screen to display a preset flicker picture according to the default VCOM register value, the color analyzer reads a flicker test value corresponding to the current preset flicker picture and sends the flicker test value to the PC host, the PC host receives the flicker test value and judges whether the flicker test value reaches a minimum value, if the current flicker test value is not the minimum value, the PC host continues to adjust the VCOM register value, and the process is repeated until the minimum value in the flicker test value is determined.

In a possible embodiment, the VCOM register value is adjusted to determine the minimum value of the flicker test values, and specifically, the VCOM register median value may be determined in a preset VCOM register value range, and further, the flicker median value of the preset flicker picture corresponding to the VCOM register median value is determined. A first register value range, which may be defined as a starting point in a preset range of VCOM register values to a middle point in the VCOM register, and a second register value range, which may be defined as a middle point in the VCOM register to an ending point in the preset range of VCOM register values, may then be determined. Further, a first VCOM register value may be obtained in the first register value range, and a first flicker value of the preset flicker picture corresponding to the first VCOM register value is determined. A second VCOM register value may be obtained in the second register value range, and a second flicker value of the preset flicker picture corresponding to the second VCOM register value may be determined. Further, the magnitude between the first flicker value, the second flicker value, and the median flicker value may be compared to determine the range of the VCOM register value corresponding to the minimum flicker value.

If the first flicker value > the median flicker value > the second flicker value, it may be determined that the range of the VCOM register value corresponding to the minimum flicker value is the second register value range. Further, the VCOM register value corresponding to the minimum flicker value is determined in the second register value range. At this time, the range of the VCOM register value corresponding to the minimum flicker value may be further narrowed according to the above median method, until the difference between two adjacent VCOM register values is adjusted to be less than or equal to the preset threshold, the adjustment of the default VCOM register value is stopped. For example, the preset threshold may be set to 1, and may be adjusted until the difference between two adjacent VCOM register values is smaller than or equal to 1, and the adjustment of the default VCOM register value is stopped.

According to the above adjustment process of the VCOM register value, the VCOM register value corresponding to the minimum value of the flicker correction values may be determined and written into the non-volatile memory of the display panel through the control board.

For example: the VCOM register value range is 0-255, the register median value 127 is taken, the first register value range is 0-127, the second register value range is 128-255, the value 55 is taken in the first register value range, the value 156 is taken in the second register value range, the flicker median value corresponding to the preset flicker picture corresponding to 127, the first flicker value corresponding to the preset flicker picture corresponding to 55 and the second flicker value corresponding to the preset flicker picture corresponding to 156 are respectively determined. The first flicker value > flicker median > second flicker value, then the VCOM register value corresponding to the smallest flicker value may be determined to be 128-. Further, a median value is taken at 128-255, the VCOM register value range corresponding to the minimum flicker value is narrowed down by taking the median value as a boundary, and by analogy, if the compared VCOM register values are 223, 224 and 225 respectively, the flicker value corresponding to 223, the flicker value corresponding to 224 and the flicker value corresponding to 225 are compared, the flicker value corresponding to 224 is determined to be the minimum flicker value, the VCOM register value corresponding to the minimum flicker correction value can be determined to be 224, and further, 224 is written into the display screen through the control board.

S504, the control panel deletes the built-in preset flicker picture.

Specifically, after the control board writes the VCOM register value corresponding to the minimum value in the flicker correction value into the nonvolatile memory of the display screen, the preset flicker picture which is embedded in the control board and matches with the model of the display screen may be deleted.

In step S505, the display panel displays a screen with the VCOM register value corresponding to the minimum value.

Specifically, through the above steps, the VCOM register value stored in the nonvolatile memory of the display screen at this time is the VCOM register value corresponding to the corrected preset flicker picture, that is, under the VCOM voltage value corresponding to the VCOM register value, the flicker degree of the picture is minimum, and the picture is not easily perceived by human eyes.

When the scheme of the embodiment of the application is executed, the scheme is applied to a display screen flicker correction system, the system comprises a control main board, a display screen, a color analyzer and a PC host, the control board receives a correction instruction, calls a built-in preset flicker picture under a default VCOM register value based on the correction instruction, sends the preset flicker picture to the display screen for display, the color analyzer reads a flicker test value corresponding to the preset flicker picture and sends the flicker test value to the PC host, the PC host receives the flicker test value, adjusts the default VCOM register value based on the flicker test value, acquires flicker correction values under different VCOM registers, writes a VCOM register value corresponding to the minimum value of the flicker correction values into the display screen through the control board, and the control board deletes the built-in preset flicker picture, and the display screen displays the picture by using the VCOM register value corresponding to the minimum value. Through the method, the display screen directly displays the preset flicker picture built in the control panel, the signal generator is not needed to be used for generating the preset flicker picture, the connection process of the signal generator and the control panel is not needed, the hardware cost can be saved, and the working hours can be reduced. Then the PC host computer measures the flicker value of the built-in preset flicker picture according to the color analyzer to adjust the VCOM register value, determines the VCOM register value corresponding to the minimum value in the flicker values of each adjusted flicker picture, writes the VCOM register value corresponding to the minimum value in the flicker values into the display screen, deletes the built-in preset flicker picture under the default VCOM register value, and finally displays the picture by the VCOM register value corresponding to the minimum value in the flicker values to finish the correction process of the flicker of the display screen.

The display screen flicker correction system provided by the embodiment of the present application will be described in detail below with reference to fig. 6. It should be noted that, the display screen flicker correction system shown in fig. 6 is used for executing the method of the embodiment shown in fig. 5 of the present application, and for convenience of description, only the portion related to the embodiment of the present application is shown, and specific technical details are not disclosed, please refer to the embodiment shown in fig. 5 of the present application.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a display screen flicker correction system 600 according to an embodiment of the present disclosure. As shown in fig. 6, the system includes: control panel 601, display screen 602, color analyzer 603 and PC host 604, wherein:

the control panel 601 is configured to receive a correction instruction, call a built-in preset flicker picture under a default VCOM register value based on the correction instruction, and send the preset flicker picture to the display screen for display;

the color analyzer 603 is configured to read a flicker test value corresponding to the preset flicker picture, and send the flicker test value to the PC host;

the PC host 604 is configured to receive the flicker test value, adjust the default VCOM register value based on the flicker test value, obtain flicker correction values under different VCOM register values, and write the VCOM register value corresponding to the minimum value of the flicker correction values into the display screen through the control board;

and the display screen 602 is configured to display a picture with the VCOM register value corresponding to the minimum value.

Optionally, the PC host 604 is configured to adjust the default VCOM register value based on the flicker test value, and acquire the flicker correction value under different VCOM register values, specifically to:

adjusting the default VCOM register value based on the flicker test value, taking the adjusted VCOM register value as the default VCOM register value, executing the control board to send the preset flicker picture to the display screen for displaying, reading the flicker test value corresponding to the preset flicker picture by the color analyzer, sending the flicker test value to the PC host, and receiving the flicker test value by the PC host.

Optionally, the PC host 604 is configured to adjust the default VCOM register value based on the flicker test value, and specifically configured to:

determining a median value of a VCOM register in a preset VCOM register value range, and determining a flicker median value corresponding to the median value of the VCOM register;

determining a starting point in the VCOM register value range to a first register value range corresponding to a median value in the VCOM register, acquiring a first VCOM register value in the first register value range, and determining a first flicker value corresponding to the first VCOM register value;

determining a second register value range corresponding to the end point of the VCOM register value range from the middle value of the VCOM register, acquiring a second VCOM register value in the second register value range, and determining a second flicker value corresponding to the second VCOM register value;

determining the minimum value in the flicker median, the first flicker value and the second flicker value, and determining the register value range to which the minimum value belongs;

and adjusting the VCOM register value in the register value range to which the minimum value belongs, and stopping adjusting the default VCOM register value when the difference value between two adjacent VCOM register values is less than or equal to a preset threshold value.

Optionally, the control board 601 is further configured to delete the built-in preset blinking screen.

Optionally, the control board 601 is configured to receive a correction instruction, and specifically configured to:

and receiving a correction instruction sent by the PC host through a USB-to-serial port connecting line.

Optionally, the color analyzer 603 is configured to send the flicker test value to the PC host, and specifically configured to:

and sending the flicker test value to the PC host through a USB connecting line.

The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method. The computer-readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVD, CD-ROMs, microdrive, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.

It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present application is not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some service ports, indirect coupling or communication connection of devices or units, and may be electrical or in other forms.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be substantially implemented or a part of or all or part of the technical solution contributing to the prior art may be embodied in the form of a software product stored in a memory, and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present application. And the aforementioned memory comprises: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by a program, which is stored in a computer-readable memory, and the memory may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.

The above are merely exemplary embodiments of the present disclosure, and the scope of the present disclosure should not be limited thereby. It is intended that all equivalent variations and modifications made in accordance with the teachings of the present disclosure be covered thereby. Embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A display screen flicker correction method is applied to a display screen flicker correction system, the system comprises a control panel, a display screen, a color analyzer and a PC host, and the method is characterized by comprising the following steps:

2. The method of claim 1, wherein the PC host adjusts the default VCOM register value based on the flicker test value, obtaining flicker correction values at different VCOM register values, comprising:

and the PC host adjusts the default VCOM register value based on the flicker test value, takes the adjusted VCOM register value as the default VCOM register value, executes the control board to send the preset flicker picture to the display screen for displaying, reads the flicker test value corresponding to the preset flicker picture by the color analyzer, sends the flicker test value to the PC host, and receives the flicker test value by the PC host.

3. The method of claim 2, wherein the PC host adjusts the default VCOM register value based on the flicker test value, comprising:

determining a second register value range corresponding to the middle value of the VCOM register to the end point of the VCOM register value range, acquiring a second VCOM register value in the second register value range, and determining a second flicker value corresponding to the second VCOM register value;

4. The method of claim 1, wherein after the PC host writes the VCOM register value corresponding to the minimum value of the flicker correction values to the display screen via the control board, the method further comprises:

and the control panel deletes the built-in preset flashing picture.

5. The method of claim 1, wherein the control board receives a correction instruction comprising:

and the control board receives a correction instruction sent by the PC host through a USB-to-serial port connecting line.

6. The method of claim 1, wherein the color analyzer sends the flicker test value to the PC host, comprising:

and the color analyzer sends the flicker test value to the PC host through a USB connecting line.

7. A display screen flicker correction system, the system comprising: the system comprises a control panel, a display screen, a color analyzer and a PC host;

8. The system of claim 7, wherein the control board is further configured to delete the built-in preset blinking picture after the PC host writes the VCOM register value corresponding to the minimum value of the blinking correction values to the display screen through the control board.

9. The system of claim 7, wherein the control board is further configured to receive the calibration command from the PC host via a USB-to-serial connection.

10. The system of claim 7, wherein the color analyzer is further configured to send the flicker test value to the PC host via a USB connection.