CN111369925A - VCOM debugging method, device, system and storage medium of display panel - Google Patents
VCOM debugging method, device, system and storage medium of display panel Download PDFInfo
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- CN111369925A CN111369925A CN202010337113.6A CN202010337113A CN111369925A CN 111369925 A CN111369925 A CN 111369925A CN 202010337113 A CN202010337113 A CN 202010337113A CN 111369925 A CN111369925 A CN 111369925A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
Abstract
The embodiment of the invention provides a VCOM debugging method, a device, a system and a storage medium of a display panel, wherein the method comprises the following steps: controlling a display panel to display a flickering picture at a first refresh rate; adjusting VCOM of the display panel and monitoring brightness difference values of positive and negative polarities of the display panel; when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the initial optimal VCOM value of the display panel; controlling the display panel to display the flickering picture at a second refresh rate, wherein the second refresh rate is greater than the first refresh rate; adjusting the VCOM of the display panel and monitoring the positive and negative polarity brightness difference value of the display panel according to the initial optimal VCOM value; when the change of the positive and negative polarity brightness difference value is monitored to be minimum, the corresponding VCOM value is determined to be the final optimal VCOM value of the display panel, and the optimal VCOM value of the display panel can be debugged quickly and accurately.
Description
Technical Field
The embodiment of the invention relates to the technical field of displays, in particular to a method, a device and a system for debugging VCOM (Voltage control Module) of a display panel and a storage medium.
Background
Currently, many panel manufacturers have introduced display panels with high refresh rate to obtain better dynamic image display effect. The display effect is better because the picture update rate is faster and the picture delay is smaller under the high refresh rate. When a high refresh rate display panel is produced, the VCOM (output reference voltage of the display panel) of the display panel needs to be debugged to make the positive and negative polarities of the display panel have equal display brightness, so that the display panel has better performance in the aspects of avoiding crosstalk and image sticking.
At present, the conventional method for debugging the VCOM of a high refresh rate display panel is basically the same as the debugging method of a common panel, that is, a flashing picture with the same refresh rate as the panel is displayed on the panel, and then the brightness difference of the positive and negative polarities of the panel is tested by an optical test instrument, and when the brightness difference is the minimum, the best VCOM is obtained.
However, the inventors found that the prior art has at least the following technical problems: under the condition of high refresh rate, the optical test instrument is limited by the response speed, and the difference of the positive and negative polarities of the panel under the high refresh rate is difficult to accurately judge, so that the display panel cannot be rapidly debugged to the optimal VCOM, and the problems of low VCOM debugging efficiency and poor accuracy exist.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, a system, and a storage medium for debugging a VCOM in a display panel, so as to overcome the problems of low efficiency and poor accuracy in debugging the VCOM in the prior art.
In a first aspect, an embodiment of the present invention provides a method for debugging VCOM in a display panel, including:
controlling a display panel to display a flickering picture at a first refresh rate;
adjusting VCOM of the display panel and monitoring a positive and negative polarity brightness difference value of the display panel under a first refresh rate flicker picture by an optical test instrument;
when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the initial optimal VCOM value of the display panel;
controlling the display panel to display the flickering picture at a second refresh rate, wherein the second refresh rate is greater than the first refresh rate;
adjusting the VCOM of the display panel according to the initial optimal VCOM value, and monitoring the positive and negative polarity brightness difference value of the display panel under a second refresh rate flicker picture by an optical test instrument;
and when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the final optimal VCOM value of the display panel.
In one possible design, the monitoring, by an optical testing apparatus, the positive and negative polarity luminance difference values of the display panel under the first refresh rate flicker picture while adjusting the VCOM of the display panel includes:
adjusting VCOM of the display panel according to a first preset pressure difference interval, and simultaneously monitoring positive and negative polarity brightness difference values of the display panel under a first refresh rate flicker picture through an optical testing instrument;
correspondingly, the adjusting the VCOM of the display panel and simultaneously monitoring the positive and negative polarity brightness difference value of the display panel under the second refresh rate flicker picture by an optical test instrument comprises:
and adjusting VCOM of the display panel according to a second preset pressure difference interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset pressure difference interval is smaller than the first preset pressure difference interval.
In one possible design, the display panel is connected with a time sequence controller TCON, and a flicker image is prestored in the TCON;
the control display panel displays a flickering picture at a first refresh rate, and includes:
displaying the pre-stored flickering image on the display panel through an Internal Integrated Circuit (IIC) bus interface of the TCON according to a first refresh rate;
accordingly, the controlling the display panel to display the flickering picture at the second refresh rate includes:
and displaying the pre-stored flickering image on the display panel through an IIC bus interface of the TCON according to a second refresh rate.
In one possible design, the displaying the pre-stored flicker image on the display panel according to a first refresh rate through the IIC bus interface of the TCON includes:
inputting a flicker image of a first refresh rate to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON;
correspondingly, the pre-stored flicker image is displayed on the display panel through the IIC bus interface of the TCON according to a second refresh rate, and the method comprises the following steps:
inputting a flicker image of a second refresh rate to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON;
the data signal line is used for transmitting the flickering picture; the clock signal line is used for controlling the refresh rate of the flickering picture.
In one possible design, the positive and negative polarity luminance difference values are flicker values.
In a second aspect, an embodiment of the present invention provides a VCOM debugging apparatus for a display panel, including:
the display control module is used for controlling the display panel to display the flickering picture at a first refresh rate;
the adjusting module is used for adjusting VCOM of the display panel and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel under a first refresh rate flicker picture through an optical testing instrument;
the VCOM determining module is used for determining the corresponding VCOM value as the initial optimal VCOM value of the display panel when the change of the brightness difference value of the positive polarity and the negative polarity is monitored to be minimum;
the display control module is further configured to control the display panel to display a flickering picture at a second refresh rate, where the second refresh rate is greater than the first refresh rate;
the adjusting module is further configured to adjust the VCOM of the display panel according to the initial optimal VCOM value, and monitor a positive and negative polarity brightness difference value of the display panel under a second refresh rate flicker picture through an optical test instrument;
the VCOM determining module is further configured to determine, when it is monitored that the difference value between the positive and negative polarities is minimal, the corresponding VCOM value as a final optimal VCOM value of the display panel.
In a possible design, the display control module is specifically configured to monitor a brightness difference value of positive and negative polarities of the display panel under a first refresh rate flicker picture through an optical test instrument while adjusting the VCOM of the display panel according to a first preset voltage difference interval; and adjusting VCOM of the display panel according to a second preset pressure difference interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset pressure difference interval is smaller than the first preset pressure difference interval.
In a possible design, the display control module is specifically configured to monitor a brightness difference value of positive and negative polarities of the display panel under a first refresh rate flicker picture through an optical test instrument while adjusting the VCOM of the display panel according to a first preset voltage difference interval; and adjusting VCOM of the display panel according to a second preset pressure difference interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset pressure difference interval is smaller than the first preset pressure difference interval.
In a third aspect, an embodiment of the present invention provides a VCOM debugging system for a display panel, including: an optical test instrument and controller;
the optical test instrument comprises a tester and a probe;
the probe is used for detecting the brightness of the display panel;
the tester is used for calculating the brightness difference value of the positive polarity and the negative polarity of the display panel according to the brightness;
the controller is configured to perform the VCOM debugging method of the display panel according to the first aspect and various possible designs of the first aspect.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method for debugging VCOM in the display panel according to the first aspect and various possible designs of the first aspect is implemented.
The VCOM debugging method, the device, the system and the storage medium of the display panel provided by the embodiment of the invention have the advantages that for the display panel with a high refresh rate, firstly, a flicker picture signal with a low refresh rate is input, and the initial optimal VCOM value of the display panel at the low refresh rate is preliminarily and roughly and rapidly determined at the low refresh rate; then, the final optimum VCOM value of the display panel at the high refresh rate is accurately determined with the initial optimum VCOM value as a reference under the flicker picture signal at the high refresh rate, and the optimum VCOM value of the display panel can be rapidly and accurately debugged. Because the optical test instrument is not limited by the response speed under the low refresh rate, the initial optimal VCOM value of the display panel can be quickly positioned, and then the final optimal VCOM value under the high refresh rate is continuously determined on the basis of the initial optimal VCOM value, so that the advantages of quickness and precision in debugging the VCOM of the display panel with the high refresh rate are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a scenario of VCOM debugging of a display panel according to an embodiment of the present invention;
fig. 2 is a first schematic flowchart illustrating a method for debugging a VCOM in a display panel according to an embodiment of the present invention;
fig. 3 is a schematic flowchart illustrating a second method for debugging a VCOM in a display panel according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a VCOM debugging device of a display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of an architecture of a VCOM debugging system of a display panel according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The display effect is better because the picture update rate is faster and the picture delay is smaller under the high refresh rate. The method for debugging VCOM of a high refresh rate display panel at present comprises the following steps: and displaying a flashing picture with the same refresh rate as the panel on the panel, and then testing the brightness difference of the positive polarity and the negative polarity of the panel by an optical testing instrument, wherein the optimal VCOM is obtained when the brightness difference is minimum. However, due to the problem of response speed of the optical test instrument under high refresh rate, the difference of positive and negative polarities of the panel under high refresh rate cannot be monitored in time, and thus the optimal VCOM cannot be debugged quickly, which has the problems of low VCOM debugging efficiency and poor accuracy.
In order to solve the above technical problems, the embodiments of the present invention propose the following technical concepts: for a display panel with a high refresh rate, firstly inputting a flicker picture signal with a low refresh rate, and preliminarily, roughly and quickly determining an initial optimal VCOM value of the display panel at the low refresh rate; then, the final optimum VCOM value of the display panel at the high refresh rate is accurately determined with the initial optimum VCOM value as a reference under the flicker picture signal at the high refresh rate, and the optimum VCOM value of the display panel can be rapidly and accurately debugged.
Fig. 1 is a schematic view of a scenario of VCOM debugging of a display panel according to an embodiment of the present invention. In fig. 1, the Display panel is a Liquid Crystal Display (LCD), in which VCOM is a reference voltage for Liquid Crystal molecule deflection, i.e. a voltage applied between two layers to rotate the Liquid Crystal, and the VCOM is required to be very stable, and different LCDs are used. For a traditional low refresh rate liquid crystal display panel, the refresh rate can be 60Hz, and the input signal source is 60 Hz; for the high refresh rate liquid crystal display panel in the embodiment of the present invention, the refresh rate may be 120Hz, and the input signal source is 120 Hz. The signal source may be input through a TCON (Time Controller) of the display panel, and the content of the signal source is displayed on the display screen.
The optical test instrument comprises a probe and a tester, and is used for testing the brightness difference of the positive polarity and the negative polarity of the panel, and when the brightness difference of the positive polarity and the negative polarity of the panel is minimum, the optimal VCOM of the display panel is obtained.
Fig. 2 is a first flowchart illustrating a method for debugging a VCOM in a display panel according to an embodiment of the present invention. As shown in fig. 2, the method includes:
s201: and controlling the display panel to display the flickering picture at a first refresh rate.
In this embodiment, the blinking picture signal of the first refresh rate may be input to the display panel through the TCON to control the display panel to display the blinking picture of the first refresh rate.
The flicker picture signal with the first refresh rate may be a signal from a signal source, or may be a flicker picture pre-stored in the TCON and output at the first refresh rate.
S202: and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel under the first refresh rate flicker picture by an optical test instrument while adjusting the VCOM of the display panel.
In this embodiment, an initial adjustment VCOM value may be set first, and then adjustment (increase or decrease) of the VCOM value of the display panel may be started with the initial adjustment VCOM value as a starting point.
In the process of adjusting the VCOM value of the display panel, the optical test instrument can be controlled to monitor the positive and negative polarity brightness difference value of the display panel under the first refresh rate flicker picture, and the change situation of the positive and negative polarity brightness difference value is recorded in real time.
Specifically, the brightness difference between the positive polarity and the negative polarity of the display panel in this embodiment is a flicker value.
S203: and when the minimum positive and negative polarity brightness difference value is monitored, determining the corresponding VCOM value as the initial optimal VCOM value of the display panel.
In this embodiment, for any VCOM value (a first target VCOM value) in the VCOM value adjustment process, a first target positive and negative polarity brightness difference value corresponding to the obtained first target VCOM value is monitored; and if the corresponding first target positive and negative polarity brightness difference value is not reduced by increasing or reducing the target VCOM value, determining the first target VCOM value as the initial optimal VCOM value.
S204: and controlling the display panel to display the flickering picture at a second refresh rate, wherein the second refresh rate is greater than the first refresh rate.
In this embodiment, the blinking picture signal of the second refresh rate may be input to the display panel through the TCON to control the display panel to display the blinking picture of the second refresh rate.
The flicker picture signal of the second refresh rate may be a signal from a signal source, or may be a flicker picture pre-stored in the TCON and output at the second refresh rate.
In this embodiment, the second refresh rate is greater than the first refresh rate, for example, the second refresh rate is 120Hz and the first refresh rate is 60 Hz.
S205: and adjusting the VCOM of the display panel according to the initial optimal VCOM value, and monitoring the positive and negative polarity brightness difference value of the display panel under the second refresh rate flicker picture by an optical test instrument.
Specifically, starting from this initial optimal VCOM value, adjustment (increase or decrease) of the VCOM value of the display panel is started.
In this embodiment, in the process of adjusting the VCOM value of the display panel, the optical test instrument may be controlled to monitor the positive and negative polarity brightness difference value of the display panel in the second refresh rate flicker picture, and record the change condition of the positive and negative polarity brightness difference value in real time.
S206: and when the brightness difference value of the positive polarity and the negative polarity is monitored to be minimum, determining the corresponding VCOM value as the final optimal VCOM value of the display panel.
In this embodiment, for any VCOM value (a second target VCOM value) in the VCOM value adjustment process, a second target positive and negative polarity brightness difference value corresponding to the second target VCOM value is obtained through monitoring; and if the corresponding second target positive and negative polarity brightness difference value is not reduced by increasing or reducing the target VCOM value, determining the second target VCOM value as the final optimal VCOM value.
As can be seen from the above description of the embodiments, in the present embodiment, for the display panel with a high refresh rate, the flicker picture signal with a low refresh rate is first input, and the initial optimal VCOM value of the display panel at the low refresh rate is preliminarily and roughly determined at the low refresh rate; then, the final optimum VCOM value of the display panel at the high refresh rate is accurately determined with the initial optimum VCOM value as a reference under the flicker picture signal at the high refresh rate, and the optimum VCOM value of the display panel can be rapidly and accurately debugged. Because the optical test instrument is not limited by the response speed under the low refresh rate, the initial optimal VCOM value of the display panel can be quickly positioned, and then the final optimal VCOM value under the high refresh rate is continuously determined on the basis of the initial optimal VCOM value, so that the advantages of quickness and precision in debugging the VCOM of the display panel with the high refresh rate are realized.
In an embodiment of the present invention, on the basis of the above embodiments, the VCOM of the display panel at the low refresh rate and the high refresh rate may be adjusted according to different accuracies, which specifically includes:
step S202 specifically includes: and adjusting VCOM of the display panel according to a first preset pressure difference interval, and monitoring the positive and negative polarity brightness difference value of the display panel under a first refresh rate flicker picture by an optical testing instrument.
Accordingly, step S205 specifically includes: and according to the initial optimal VCOM value, adjusting the VCOM of the display panel according to a second preset pressure difference interval, and simultaneously monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel under a second refresh rate flicker picture by an optical test instrument, wherein the second preset pressure difference interval is smaller than the first preset pressure difference interval.
In this embodiment, the second predetermined differential pressure interval being smaller than the first predetermined differential pressure interval means that the accuracy in debugging the VCOM at the high refresh rate is greater than the accuracy in debugging the VCOM at the second refresh rate.
It can be seen from the above embodiments that by setting the second predetermined voltage difference interval to be smaller than the first predetermined voltage difference interval, the time required for positioning the initial optimal VCOM value of the display panel can be further saved, and the accuracy of determining the final optimal VCOM value at a high refresh rate can be improved.
Fig. 3 is a flowchart illustrating a second method for debugging a VCOM in a display panel according to an embodiment of the invention. On the basis of the above embodiments, this embodiment further describes a process of controlling a refresh rate of a flicker picture of a display panel through a TCON, where a flicker image is pre-stored in the TCON, as shown in fig. 3, and the method includes:
s301: and displaying the pre-stored flash image on the display panel through the IIC bus interface of the TCON according to a first refresh rate.
In the present embodiment, an IIC (Inter Integrated Circuit) bus interface includes a data signal line and a clock signal line.
Specifically, a flicker image of a first refresh rate may be input to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON. The data signal line is used for transmitting the flickering picture; and the clock signal line is used for controlling the refresh rate of the flickering picture.
S302: and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel under the first refresh rate flicker picture by an optical test instrument while adjusting the VCOM of the display panel.
S303: and when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the initial optimal VCOM value of the display panel.
Steps S302 to S303 are the same as those described in S202 to S203 of the above embodiment, and for detailed description, reference is made to the description of S202 to S203, which is not repeated herein.
S304: and displaying the pre-stored flicker image on the display panel through the IIC bus interface of the TCON according to a second refresh rate, wherein the second refresh rate is greater than the first refresh rate.
Specifically, a flicker image of a second refresh rate may be input to the display panel through a data signal line and a clock signal line of an IIC bus interface through the TCON
S305: and adjusting the VCOM of the display panel according to the initial optimal VCOM value, and monitoring the positive and negative polarity brightness difference value of the display panel under the second refresh rate flicker picture by an optical test instrument.
S306: and when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the final optimal VCOM value of the display panel.
Steps S305 to S306 are the same as those described in S205 to S206 in the above embodiment, and for detailed description, reference is made to the description of S205 to S206, which is not repeated herein.
As can be seen from the above description, the flicker image is pre-stored in the TCON, and the refresh rate of the flicker image is adjusted through the data signal line and the clock signal line of the IIC bus interface of the TCON, so as to control the display panel to display the flicker image at different refresh rates.
Fig. 4 is a schematic structural diagram of a VCOM debugging device of a display panel according to an embodiment of the invention. As shown in fig. 4, the VCOM debugging device of the display panel includes: a display control module 401, an adjustment module 402, and a VCOM determination module 403.
A display control module 401, configured to control the display panel to display a flickering picture at a first refresh rate; an adjusting module 402, configured to adjust the VCOM of the display panel and monitor a brightness difference value of positive and negative polarities of the display panel in a first refresh rate flicker picture through an optical testing apparatus; a VCOM determining module 403, configured to determine, when it is monitored that the difference value between positive and negative polarities is minimal, a corresponding VCOM value as an initial optimal VCOM value of the display panel; the display control module 401 is further configured to control the display panel to display a flickering picture at a second refresh rate, where the second refresh rate is greater than the first refresh rate; the adjusting module 402 is further configured to adjust the VCOM of the display panel according to the initial optimal VCOM value, and monitor a positive and negative brightness difference value of the display panel under a second refresh rate flicker picture through an optical test instrument; the VCOM determining module 403 is further configured to determine, when it is monitored that the difference between positive and negative polarities is minimal, a corresponding VCOM value as a final optimal VCOM value of the display panel.
The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
In an embodiment of the present invention, the display control module 401 is specifically configured to monitor, by an optical test instrument, a positive-negative polarity brightness difference value of the display panel in a first refresh rate flicker picture while adjusting the VCOM of the display panel according to a first preset voltage difference interval; and adjusting VCOM of the display panel according to a second preset pressure difference interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset pressure difference interval is smaller than the first preset pressure difference interval.
In an embodiment of the present invention, the display control module 402 is specifically configured to display the pre-stored flickering image on the display panel according to a first refresh rate through an internal integrated circuit IIC bus interface of the TCON; and displaying the pre-stored flickering image on the display panel through an IIC bus interface of the TCON according to a second refresh rate.
In an embodiment of the present invention, the display control module 402 is further specifically configured to input a flicker image at a first refresh rate to the display panel through a data signal line and a clock signal line of an integrated circuit IIC bus interface of the TCON; inputting a flicker image of a second refresh rate to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON; the data signal line is used for transmitting the flickering picture; the clock signal line is used for controlling the refresh rate of the flickering picture.
Fig. 5 is a schematic structural diagram of an architecture of a VCOM debugging system of a display panel according to an embodiment of the invention. As shown in fig. 5, the VCOM debugging system of the display panel of the present embodiment includes:
an optical test instrument 501 and a controller 502;
the optical test instrument 501 comprises a probe 5011 and a tester 5012;
the probe 5011 is used for detecting the brightness of the display panel;
the tester 5012 is used for calculating the brightness difference value of the positive polarity and the negative polarity of the display panel according to the brightness;
the controller 502 is configured to execute the above-mentioned VCOM debugging method of the display panel.
In the present embodiment, it is preferred that,
an embodiment of the present invention further provides a computer-readable storage medium, where a computer execution instruction is stored in the computer-readable storage medium, and when a processor executes the computer execution instruction, the VCOM debugging method of the display panel is implemented as described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules 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 modules may be selected according to actual needs to implement the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods described in the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A VCOM debugging method of a display panel, comprising:
controlling a display panel to display a flickering picture at a first refresh rate;
adjusting VCOM of the display panel and monitoring a positive and negative polarity brightness difference value of the display panel under a first refresh rate flicker picture by an optical test instrument;
when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the initial optimal VCOM value of the display panel;
controlling the display panel to display the flickering picture at a second refresh rate, wherein the second refresh rate is greater than the first refresh rate;
adjusting the VCOM of the display panel according to the initial optimal VCOM value, and monitoring the positive and negative polarity brightness difference value of the display panel under a second refresh rate flicker picture by an optical test instrument;
and when the monitored positive and negative polarity brightness difference value is changed to the minimum, determining the corresponding VCOM value as the final optimal VCOM value of the display panel.
2. The method of claim 1, wherein monitoring brightness difference values of positive and negative polarities of the display panel under a first refresh rate flicker picture by an optical testing apparatus while adjusting the VCOM of the display panel comprises:
adjusting VCOM of the display panel according to a first preset pressure difference interval, and simultaneously monitoring positive and negative polarity brightness difference values of the display panel under a first refresh rate flicker picture through an optical testing instrument;
correspondingly, the adjusting the VCOM of the display panel and simultaneously monitoring the positive and negative polarity brightness difference value of the display panel under the second refresh rate flicker picture by an optical test instrument comprises:
and adjusting VCOM of the display panel according to a second preset differential pressure interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset differential pressure interval is smaller than the first preset differential pressure interval.
3. The method according to claim 1 or 2, wherein the display panel is connected with a Timing Controller (TCON), and a flicker image is pre-stored in the TCON;
the control display panel displays a flickering picture at a first refresh rate, and includes:
displaying the pre-stored flickering image on the display panel through an Internal Integrated Circuit (IIC) bus interface of the TCON according to a first refresh rate;
accordingly, the controlling the display panel to display the flickering picture at the second refresh rate includes:
and displaying the pre-stored flickering image on the display panel through an IIC bus interface of the TCON according to a second refresh rate.
4. The method of claim 3, wherein displaying the pre-stored flashing image on the display panel at a first refresh rate via the IIC bus interface of the TCON comprises:
inputting a flicker image of a first refresh rate to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON;
correspondingly, the pre-stored flicker image is displayed on the display panel through the IIC bus interface of the TCON according to a second refresh rate, and the method comprises the following steps:
inputting a flicker image of a second refresh rate to the display panel through a data signal line and a clock signal line of an IIC bus interface of the TCON;
the data signal line is used for transmitting the flickering picture; the clock signal line is used for controlling the refresh rate of the flickering picture.
5. The method according to any one of claims 1 to 2 and 4, wherein the positive and negative polarity luminance difference values are flicker values.
6. A VCOM debugging device of a display panel, comprising:
the display control module is used for controlling the display panel to display the flickering picture at a first refresh rate;
the adjusting module is used for adjusting VCOM of the display panel and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel under a first refresh rate flicker picture through an optical testing instrument;
the VCOM determining module is used for determining the corresponding VCOM value as the initial optimal VCOM value of the display panel when the change of the brightness difference value of the positive polarity and the negative polarity is monitored to be minimum;
the display control module is further configured to control the display panel to display a flickering picture at a second refresh rate, where the second refresh rate is greater than the first refresh rate;
the adjusting module is further configured to adjust the VCOM of the display panel according to the initial optimal VCOM value, and monitor a positive and negative polarity brightness difference value of the display panel under a second refresh rate flicker picture through an optical test instrument;
the VCOM determining module is further configured to determine, when it is monitored that the difference value between the positive and negative polarities is minimal, the corresponding VCOM value as a final optimal VCOM value of the display panel.
7. The apparatus of claim 6,
the display control module is specifically configured to monitor a positive and negative polarity brightness difference value of the display panel under a first refresh rate flicker picture through an optical test instrument while adjusting the VCOM of the display panel according to a first preset voltage difference interval; and adjusting VCOM of the display panel according to a second preset differential pressure interval, and monitoring the brightness difference value of the positive polarity and the negative polarity of the display panel through an optical test instrument, wherein the second preset differential pressure interval is smaller than the first preset differential pressure interval.
8. The device according to claim 6 or 7, wherein the display panel is connected with a timing controller TCON, and a flicker image is prestored in the TCON;
the display control module is specifically used for displaying the pre-stored flickering image on the display panel through an Internal Integrated Circuit (IIC) bus interface of the TCON according to a first refresh rate; and displaying the pre-stored flickering image on the display panel through an IIC bus interface of the TCON according to a second refresh rate.
9. A VCOM debugging system of a display panel, comprising:
an optical test instrument and controller;
the optical test instrument comprises a tester and a probe;
the probe is used for detecting the brightness of the display panel;
the tester is used for calculating the brightness difference value of the positive polarity and the negative polarity of the display panel according to the brightness;
the controller for performing the VCOM debugging method of the display panel of any one of claims 1 to 5.
10. A computer-readable storage medium having stored therein computer-executable instructions that, when executed by a processor, implement the VCOM debugging method of the display panel of any one of claims 1 to 5.
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