CN111145701B - Voltage adjusting method and device of display panel and display panel - Google Patents
Voltage adjusting method and device of display panel and display panel Download PDFInfo
- Publication number
- CN111145701B CN111145701B CN202010001303.0A CN202010001303A CN111145701B CN 111145701 B CN111145701 B CN 111145701B CN 202010001303 A CN202010001303 A CN 202010001303A CN 111145701 B CN111145701 B CN 111145701B
- Authority
- CN
- China
- Prior art keywords
- voltage
- pixel
- voltage difference
- common electrode
- electrode voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The invention provides a voltage adjusting method and device of a display panel and the display panel, wherein the voltage adjusting method comprises the following steps: receiving a voltage adjustment instruction; responding to the voltage adjusting instruction, and controlling the differential wiring to simultaneously acquire the pixel electrode voltage and the common electrode voltage corresponding to any pixel point in at least one pixel point; respectively determining a first voltage difference between the pixel electrode voltage and the common electrode voltage under positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage under negative polarity; and adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal. The display quality of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a voltage adjusting method and device for a display panel and the display panel.
Background
In the liquid crystal display panel, if positive voltage or negative voltage is always used to drive the liquid crystal molecules, the liquid crystal molecules are easily polarized and damaged. Therefore, in order to protect the liquid crystal molecules from the driving voltage, the liquid crystal molecules must be driven by alternating positive and negative voltages. Currently, there are mainly polarity inversion methods such as frame inversion, column inversion, row inversion, and dot inversion. For example, the column inversion scheme usually alternates the driving voltage for the same data.
However, in practical applications, the voltage difference between the pixel electrode voltage and the common electrode voltage may be different in the positive polarity and the voltage difference between the pixel electrode voltage and the common electrode voltage in the negative polarity, which may cause the liquid crystal display panel to have image flicker, image sticking, and other abnormalities.
The existing method is characterized in that the voltage of a pixel electrode and the voltage of a common electrode are respectively collected to further determine the pressure difference between the two, and in the process of collecting the voltage of the pixel electrode, a wiring connected with the pixel electrode is very easily interfered by other signals, so that the precision of the collected voltage of the pixel electrode is low, and the display quality of a liquid crystal display panel is poor.
Disclosure of Invention
The invention provides a voltage adjusting method and device of a display panel and the display panel, which are used for improving the display quality of the display panel.
In a first aspect, an embodiment of the present invention provides a method for adjusting a voltage of a display panel, including:
receiving a voltage adjustment instruction;
responding to the voltage adjusting instruction, and controlling the differential wiring to simultaneously acquire the pixel electrode voltage and the common electrode voltage corresponding to any pixel point in at least one pixel point;
respectively determining a first voltage difference between the pixel electrode voltage and the common electrode voltage under positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage under negative polarity;
and adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal.
In a possible implementation manner, the controlling the differential routing to simultaneously collect a pixel electrode voltage and a common electrode voltage corresponding to any one pixel point in at least one pixel point includes:
dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
and controlling the differential wiring to collect pixel points located at the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points located at the center of each edge area.
In one possible embodiment, the determining a first voltage difference between the pixel electrode voltage and the common electrode voltage in the positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage in the negative polarity, respectively, includes:
respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
In one possible embodiment, the adjusting the common electrode voltage according to the first voltage difference and the second voltage difference includes:
and if the absolute value of the first differential pressure is greater than the absolute value of the second differential pressure, increasing the current voltage of the common electrode by a first preset voltage so as to enable the absolute values of the adjusted first differential pressure and the adjusted second differential pressure to be equal.
In one possible embodiment, the adjusting the pixel electrode voltage according to the first voltage difference and the second voltage difference includes:
if the absolute value of the first voltage difference is larger than the absolute value of the second voltage difference, the current pixel electrode voltage is reduced by a second preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal.
In one possible embodiment, the receiving a voltage adjustment command includes:
and if a first image to be tested for the image flicker test or a second image to be tested for the image retention test is received, generating a voltage adjusting instruction.
In a second aspect, an embodiment of the present invention provides a voltage adjustment apparatus for a display panel, including:
a receiving unit for receiving a voltage adjustment instruction;
the control unit is used for responding to the voltage adjusting instruction, controlling the differential wiring to simultaneously acquire a voltage corresponding to any one of the at least one pixel point, and simultaneously acquiring a pixel electrode voltage and a common electrode voltage through the differential wiring;
a determination unit configured to determine a first voltage difference between the pixel electrode voltage and the common electrode voltage in a positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage in a negative polarity, respectively;
and the adjusting unit is used for adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal.
In one possible embodiment, the control unit is configured to:
dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
and controlling the differential wiring to collect pixel points positioned in the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points positioned in the center of each edge area.
In a possible embodiment, the determination unit is configured to:
respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
In a possible embodiment, the adjustment unit is configured to:
and if the absolute value of the first differential pressure is greater than the absolute value of the second differential pressure, increasing the current voltage of the common electrode by a first preset voltage so as to enable the absolute values of the adjusted first differential pressure and the adjusted second differential pressure to be equal.
In a possible embodiment, the adjustment unit is configured to:
if the absolute value of the first voltage difference is larger than the absolute value of the second voltage difference, the current pixel electrode voltage is reduced by a second preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal.
In a possible implementation, the receiving unit is configured to:
and if a first image to be tested for the image flicker test or a second image to be tested for the image retention test is received, generating a voltage adjusting instruction.
In a third aspect, an embodiment of the present invention further provides a display panel, including the voltage adjustment device as described above.
In a fourth aspect, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of the voltage adjustment method for the display panel as described above.
In a fifth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of the voltage adjustment method for the display panel as described above.
The invention has the following beneficial effects:
the embodiment of the invention provides a voltage adjusting method and device of a display panel, and the display panel, wherein after receiving a voltage adjusting instruction, a differential wiring is controlled to simultaneously acquire a pixel electrode voltage and a common electrode voltage corresponding to any pixel point in at least one pixel point in response to the voltage adjusting instruction, then a first voltage difference between the pixel electrode voltage and the common electrode voltage under positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage under negative polarity are respectively determined, and then the pixel electrode voltage or the common electrode voltage is adjusted according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal. That is, the pixel electrode voltage and the common electrode voltage are simultaneously collected through the differential wiring, the voltage difference between the pixel electrode voltage and the common electrode voltage under the positive polarity and the negative polarity is respectively determined, and the pixel electrode voltage or the common electrode voltage is adjusted according to the determined voltage difference, so that the voltage difference between the pixel electrode voltage and the common electrode voltage under the positive polarity and the negative polarity is equal. The pixel electrode voltage and the common electrode voltage can be simultaneously acquired through the differential wiring in the whole process, so that the voltage difference between the pixel electrode voltage and the common electrode voltage can be directly determined, and the display quality of the display panel is improved.
Drawings
Fig. 1 is a flowchart illustrating a method for adjusting a voltage of a display panel according to an embodiment of the invention;
fig. 2 is a flowchart of a method of step S102 in a method for adjusting a voltage of a display panel according to an embodiment of the invention;
fig. 3 is a flowchart of a method of step S103 in a method for adjusting a voltage of a display panel according to an embodiment of the invention;
fig. 4 is a schematic diagram illustrating distribution of detected pixel points in a voltage adjustment method for a display panel according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating distribution of tested pixel points in a second image to be tested in the voltage adjustment method for a display panel according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a voltage adjustment apparatus of a display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present invention. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
At present, pixel electrode voltage is mainly detected and amplified for collection, however, due to the fact that the panel is easily interfered by other signals when being wired, deviation between collected data and actual pixel electrode voltage is large, and then large error exists in detection of voltage difference between the pixel electrode voltage and common electrode voltage, so that adjustment accuracy of the display panel is low, and display effect of the display panel is reduced.
In view of this, an embodiment of the present invention provides a method for adjusting a display panel, as shown in fig. 1, the method includes:
s101: receiving a voltage adjustment instruction;
in a specific implementation process, the voltage adjustment command may be generated during an image flicker test, may be generated during an image retention test, and may be generated during an image crosstalk test, which is not limited herein.
S102: responding to the voltage adjusting instruction, and controlling the differential wiring to simultaneously acquire the pixel electrode voltage and the common electrode voltage corresponding to any pixel point in at least one pixel point;
in a specific implementation process, a pair of traces included in the differential traces are kept parallel to each other, and the line width and the line spacing are kept unchanged. Therefore, the differential wiring is approximately consistent with each other in the signal transmission process, so that the voltage difference between the pixel electrode voltage and the common electrode voltage is always a completely equal or approximately equal numerical value in the whole voltage difference detection process, the accuracy of voltage difference detection is ensured, and the display effect of the display panel is improved. In addition, when at least one pixel point is one, the pixel point may be a pixel point located at the center position of the display area of the display panel, or may be any pixel point located at any position other than the center position of the display area. When at least one pixel point is multiple, the multiple pixel points may be pixel points located at any two positions in the display region, or may also be pixel points where one of the pixel points is located at the center position of the display region, and the other pixel points are pixel points located at other positions except the center position of the display region, which is not limited herein.
S103: respectively determining a first voltage difference between the pixel electrode voltage and the common electrode voltage under positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage under negative polarity;
in a specific implementation, a first voltage difference between the pixel electrode voltage and the common electrode voltage in the positive polarity may be a positive value, and a second voltage difference between the pixel electrode voltage and the common electrode voltage in the negative polarity may be a negative difference. The specific values of the first pressure difference and the second pressure difference may be determined according to the actual conditions of the application, and are not limited herein.
S104: and adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal.
In the specific implementation process, after the voltage difference between the pixel electrode voltage and the common electrode voltage under the positive and negative polarities is determined, the pixel electrode voltage or the common electrode voltage can be adjusted in a targeted manner according to the voltage difference relation between the pixel electrode voltage and the common electrode voltage under the positive and negative polarities, so that the absolute value of the adjusted first voltage difference is equal to the absolute value of the adjusted second voltage difference, the rapid determination of the voltage difference between the pixel electrode voltage and the common electrode voltage is realized, and the display quality of the display panel is improved.
In the embodiment of the present invention, as shown in fig. 2, step S102: responding to the voltage adjustment instruction, controlling the differential wiring to simultaneously collect the pixel electrode voltage and the common electrode voltage corresponding to any pixel point in at least one pixel point, and comprising the following steps:
s201: dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
s202: and controlling the differential wiring to collect pixel points located at the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points located at the center of each edge area.
In the specific implementation process, the specific implementation process from step S201 to step S202 is as follows:
first, the display area of the display panel is divided into a center area and a plurality of edge areas surrounding the center area according to a preset rule, where the preset rule may be to divide the display area of the display panel into 3 × 3 areas, or may also be to divide the display area of the display panel into 5 × 5 areas, or of course, the display area of the display panel may also be divided into other numbers of areas according to actual needs, which is not limited herein. And then, controlling the differential wiring to collect pixel points positioned in the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points positioned in the center of each edge area. The pixel electrode voltage and the common electrode voltage of the pixel point corresponding to the central position of the area are selected, so that the detection accuracy of the pixel electrode voltage and the common electrode voltage of the detected pixel point can be ensured. In addition, through the detection of the pixel electrode voltage and the common electrode voltage in a plurality of areas, the detected pixel electrode voltage and the detected common electrode voltage can be guaranteed to have better representativeness, and the detection accuracy of the pixel electrode voltage and the common electrode voltage is guaranteed.
In the embodiment of the present invention, as shown in fig. 3, step S103: determining a first voltage difference between the pixel electrode voltage and the common electrode voltage at a positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage at a negative polarity, respectively, comprising:
s301: respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
s302: respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
s303: and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
In the specific implementation process, the specific implementation process of steps S301 to S303 is as follows:
first, the pixel electrode voltage corresponding to each pixel point in at least one pixel point and the voltage difference between the common electrodes are determined under positive polarity and negative polarity, for example, as shown in fig. 4, a distribution diagram of detected pixel points is shown, specifically, there are five detected pixel points, where one pixel point px1 is located at the center of the center region of the display region, the other four pixel points px2, px3, px4, and px5 are located at the center of the edge region of the display region, and accordingly, under positive polarity, the detected pixel electrode voltage corresponding to the pixel point px1 and the voltage difference between the common electrodes are V1, and the detected pixel electrode voltage corresponding to the other four pixel points px2, px3, px4, and px5 and the voltage difference between the common electrodes are V2, V3, V4, and V5 in sequence. Similarly, under the negative polarity, the detected voltage difference between the pixel electrode voltage corresponding to the pixel point px1 and the common electrode voltage is V1 ', and the voltage differences between the pixel electrode voltages corresponding to the other four pixel points px2, px3, px4 and px5 and the common electrode voltage are V2 ', V3 ', V4 ' and V5 ' in sequence. And then, respectively determining the average voltage difference of the voltage difference between the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the common electrode voltage under the positive polarity and the negative polarity. Still taking the example shown in FIG. 4 as an example, under the positive polarity condition, the average voltage difference between the pixel electrode voltages corresponding to the pixels px 1-px 5 and the common electrode voltage
Under negative polarity, the average voltage difference between the pixel electrode voltages corresponding to the pixel points px 1-px 5 and the common electrode voltage
Then, an average voltage difference of voltage differences between the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage is used as a first voltage difference, and an average voltage difference of voltage differences between the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage is used as a second voltage difference, for example, still taking the example shown in fig. 4 as an example, the first voltage difference is a first voltage difference
A second pressure difference of
In the embodiment of the present invention, step S104: the pixel electrode voltage or the common electrode voltage is adjusted according to the first voltage difference and the second voltage difference, and the adjustment mode may be, but is not limited to, the following two conditions.
In a specific implementation process, the first adjustment condition of step S104 is that, if the absolute value of the first voltage difference is greater than the absolute value of the second voltage difference, the current common electrode voltage is increased by a first preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal. The first preset voltage is determined according to the specific situation between the adjusted first voltage difference and the adjusted second voltage difference. Again taking the example shown in FIG. 4 above as an example, such as the first pressure differential
At 5V, second pressure difference
at-3V, the common electrode voltage can be increased by 1V, which makes the adjusted first voltage difference 4V,the adjusted second pressure difference is-4V, so that the display effect of the adjusted display panel is improved.
In the embodiment of the present invention, the second adjustment condition of step S104 is that, if the absolute value of the first voltage difference is greater than the absolute value of the second voltage difference, the current pixel electrode voltage is decreased by the second preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal. The second preset voltage is determined according to the specific situation between the adjusted first voltage difference and the adjusted second voltage difference. Again taking the example shown in FIG. 4 above as an example, such as the first pressure differential
At 5V, second pressure difference
And the voltage of the pixel electrode can be reduced by 1V to be-3V, so that the adjusted first voltage difference is 4V, and the adjusted second voltage difference is-4V, thereby improving the display effect of the adjusted display panel.
In the embodiment of the present invention, step S101: receiving a voltage adjustment command, comprising: and if a first image to be tested for the image flicker test or a second image to be tested for the image retention test is received, generating a voltage adjusting instruction. In a specific implementation process, the voltage adjustment instruction is generated when a first image to be tested for the image flicker test is received, or the voltage adjustment instruction is generated when a second image to be tested for the image sticking test is received. Alternatively, the voltage adjustment instruction may be generated when a third image to be tested for the over-green test is received. The voltage adjustment instruction may also be generated when a fourth image to be tested for crosstalk testing is received, and the generation of the trigger voltage adjustment instruction is not limited to the above cases, and is not limited herein.
In the following, a specific implementation of step S104 is described with reference to the above example shown in fig. 4, where a Timing Controller (TCON) identifies that the first image to be tested for the flicker test is transmitted to the system sideDuring the process, after analyzing the collected data of the five pixel points of px 1-px 5, the TCON determines the pressure difference of each pixel point under the positive and negative polarities and the corresponding average value of the pressure difference, and then passes the corresponding average value of the pressure difference through I2And C is transmitted to a Power Management Integrated Circuit (PMIC), the PMIC adjusts the corresponding pixel electrode voltage or the common electrode voltage, for example, the PMIC increases the common electrode voltage by 1V, and then the driving circuit (Source IC) controls the display of the display panel according to the corresponding driving voltage, thereby realizing the automatic adjustment of the image flicker. For another example, when the TCON recognizes that the image transmitted by the system end is the second image to be tested for the image retention test, the second image to be tested may be a checkerboard pattern as shown in fig. 5, and the five pixel points px1 to px5 may be distributed as shown in fig. 5, at this time, the image acquired by the five pixel points is completely black, for example, when the display panel is an HADS-type liquid crystal display panel, the Source IC acquires the voltage difference between the pixel electrode voltage and the common electrode voltage of the five pixel points px1 to px5 and feeds the voltage difference back to the TCON, and then the TCON adjusts the V7 and V8 output to the Source IC according to the average value of the voltage differences of the five pixel points to adjust the second image to be tested. For example, for the HADS type lcd panel, after the average voltage difference is obtained, the first voltage difference under positive polarity is 5V, and the second voltage difference under negative polarity is-3V, the TCON adjusts V7 and V8, controls V7 and V8 to decrease by 1V, and then the Source IC controls the display of the display panel according to the adjusted driving voltage, thereby implementing automatic adjustment of the afterimage. Of course, in the specific implementation process, different images may be automatically adjusted according to the actual application of the voltage difference between the pixel electrode voltage and the common electrode voltage, which is not described herein again.
Based on the same inventive concept, as shown in fig. 6, an embodiment of the present invention provides a voltage adjustment apparatus for a display panel, including:
a receiving unit 10, configured to receive a voltage adjustment instruction;
the control unit 20 is configured to respond to the voltage adjustment instruction, control the differential routing to simultaneously acquire a voltage corresponding to any one of the at least one pixel point, and simultaneously acquire a pixel electrode voltage and a common electrode voltage through the differential routing;
a determination unit 30 for determining a first voltage difference between the pixel electrode voltage and the common electrode voltage in a positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage in a negative polarity, respectively;
and an adjusting unit 40, configured to adjust the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference, so that absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal to each other.
In an embodiment of the present invention, the control unit 20 is configured to:
dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
and controlling the differential wiring to collect pixel points positioned in the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points positioned in the center of each edge area.
In the embodiment of the present invention, the determining unit 30 is configured to:
respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
In the embodiment of the present invention, the adjusting unit 40 is configured to:
and if the absolute value of the first differential pressure is greater than the absolute value of the second differential pressure, increasing the current voltage of the common electrode by a first preset voltage so as to enable the absolute values of the adjusted first differential pressure and the adjusted second differential pressure to be equal.
In the embodiment of the present invention, the adjusting unit 40 is configured to:
if the absolute value of the first voltage difference is larger than the absolute value of the second voltage difference, the current pixel electrode voltage is reduced by a second preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal.
In the embodiment of the present invention, the receiving unit 10 is configured to:
and if a first image to be tested for the image flicker test or a second image to be tested for the image retention test is received, generating a voltage adjusting instruction.
Based on the same inventive concept, as shown in fig. 7, an embodiment of the present invention provides a display device including a display panel 100, the display panel 100 including a voltage adjustment device 200 as described above. In the embodiment of the present invention, since the principle of the display device for solving the problem is similar to that of the voltage adjustment device of the display panel, the implementation of the display device can refer to the implementation of the voltage adjustment device of the display panel, and repeated descriptions are omitted.
In a specific implementation process, the display device provided in the embodiment of the present invention may be a mobile phone as shown in fig. 7, and certainly, the display device provided in the embodiment of the present invention may also be any product or component having a display function, such as a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein nor should they be construed as limiting the present invention.
Based on the same inventive concept, as shown in fig. 8, an embodiment of the present invention further provides a computer device, including: a memory 50, a processor 60 and a computer program stored on the memory 50 and executable on the processor 60, which when executed by the processor 60 implement the steps of the voltage adjustment method of the display panel as described above.
The processor 60 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the voltage adjustment method for the display panel disclosed by the embodiment of the invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 50, and the processor 60 reads the information in the memory 50 and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 60 is configured to read a program in the memory 50 and execute any step of the voltage adjustment method for the display panel.
Based on the same technical concept, embodiments of the present application also provide a computer-readable storage medium having a computer program stored thereon. The computer program, when executed by a processor, implements any of the steps of the method for adjusting voltage of a display panel described above.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A method for adjusting voltage of a display panel includes:
receiving a voltage adjustment instruction;
responding to the voltage adjusting instruction, and controlling the differential wiring to simultaneously acquire the pixel electrode voltage and the common electrode voltage corresponding to any pixel point in at least one pixel point;
respectively determining a first voltage difference between the pixel electrode voltage and the common electrode voltage under positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage under negative polarity;
adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal;
wherein, control differential routing gathers pixel electrode voltage and the common electrode voltage that any pixel point corresponds in at least one pixel simultaneously, includes:
dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
and controlling the differential wiring to collect pixel points located at the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points located at the center of each edge area.
2. The voltage adjustment method of claim 1, wherein the determining a first voltage difference between the pixel electrode voltage and the common electrode voltage in a positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage in a negative polarity, respectively, comprises:
respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
3. The voltage adjustment method of claim 1, wherein said adjusting the common electrode voltage based on the first voltage difference and the second voltage difference comprises:
and if the absolute value of the first differential pressure is greater than the absolute value of the second differential pressure, increasing the current voltage of the common electrode by a first preset voltage so as to enable the absolute values of the adjusted first differential pressure and the adjusted second differential pressure to be equal.
4. The voltage adjustment method of claim 1, wherein the adjusting the pixel electrode voltage according to the first voltage difference and the second voltage difference comprises:
if the absolute value of the first voltage difference is larger than the absolute value of the second voltage difference, the current pixel electrode voltage is reduced by a second preset voltage, so that the absolute values of the adjusted first voltage difference and the adjusted second voltage difference are equal.
5. The voltage adjustment method of claim 1, wherein the receiving a voltage adjustment command comprises:
and if a first image to be tested for the image flicker test or a second image to be tested for the image retention test is received, generating a voltage adjusting instruction.
6. A voltage adjustment device of a display panel, comprising:
a receiving unit for receiving a voltage adjustment instruction;
the control unit is used for responding to the voltage adjusting instruction, controlling the differential wiring to simultaneously acquire a voltage corresponding to any one of the at least one pixel point, and simultaneously acquiring a pixel electrode voltage and a common electrode voltage through the differential wiring;
a determination unit configured to determine a first voltage difference between the pixel electrode voltage and the common electrode voltage in a positive polarity and a second voltage difference between the pixel electrode voltage and the common electrode voltage in a negative polarity, respectively;
the adjusting unit is used for adjusting the pixel electrode voltage or the common electrode voltage according to the first voltage difference and the second voltage difference so as to enable the absolute values of the adjusted first voltage difference and the adjusted second voltage difference to be equal;
wherein the control unit is configured to:
dividing a display area of the display panel into a central area and a plurality of edge areas surrounding the central area according to a preset rule;
and controlling the differential wiring to collect pixel points positioned in the center of the central area and pixel electrode voltage and common electrode voltage corresponding to any one of the pixel points positioned in the center of each edge area.
7. The voltage adjustment apparatus of claim 6, wherein the determination unit is to:
respectively determining the pixel electrode voltage corresponding to each pixel point in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
respectively determining the average voltage difference of the pixel electrode voltages corresponding to all the pixel points in the at least one pixel point and the voltage difference between the common electrode voltages under the positive polarity and the negative polarity;
and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the positive polarity and the common electrode voltage as a first voltage difference, and taking the average voltage difference of the voltage differences between the pixel electrodes corresponding to all the pixel points in the at least one pixel point under the negative polarity and the common electrode voltage as a second voltage difference.
8. A display panel comprising the voltage adjustment device according to any one of claims 6 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001303.0A CN111145701B (en) | 2020-01-02 | 2020-01-02 | Voltage adjusting method and device of display panel and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010001303.0A CN111145701B (en) | 2020-01-02 | 2020-01-02 | Voltage adjusting method and device of display panel and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111145701A CN111145701A (en) | 2020-05-12 |
| CN111145701B true CN111145701B (en) | 2022-04-26 |
Family
ID=70523230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010001303.0A Active CN111145701B (en) | 2020-01-02 | 2020-01-02 | Voltage adjusting method and device of display panel and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111145701B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284470B (en) * | 2021-05-26 | 2023-04-25 | 惠科股份有限公司 | Public voltage compensation method and liquid crystal display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003107521A (en) * | 2001-09-27 | 2003-04-09 | Samsung Electronics Co Ltd | Liquid crystal display device |
| CN1527271A (en) * | 2003-03-03 | 2004-09-08 | ��ʽ����������ʾ�� | Image display device |
| CN101408705A (en) * | 2008-11-24 | 2009-04-15 | 上海广电光电子有限公司 | Liquid crystal display panel and drive method thereof |
| CN103507658A (en) * | 2012-06-21 | 2014-01-15 | 广东高标电子科技有限公司 | Electric vehicle and bus control system thereof |
| CN107068098A (en) * | 2017-05-16 | 2017-08-18 | 深圳市华星光电技术有限公司 | The driving method and device of a kind of liquid crystal display panel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006064963A (en) * | 2004-08-26 | 2006-03-09 | Toshiba Matsushita Display Technology Co Ltd | Display data input device for flat display apparatus |
| TWI277037B (en) * | 2005-12-16 | 2007-03-21 | Innolux Display Corp | Liquid crystal display and it's driving circuit and driving method |
| KR101200966B1 (en) * | 2006-01-19 | 2012-11-14 | 삼성디스플레이 주식회사 | Common voltage generation circuit and liquid crystal display comprising the same |
| US20130321378A1 (en) * | 2012-06-01 | 2013-12-05 | Apple Inc. | Pixel leakage compensation |
| CN106535463A (en) * | 2015-09-15 | 2017-03-22 | 展讯通信（上海）有限公司 | Bonding pad structure and circuit for improving current detection accuracy |
| CN208969162U (en) * | 2018-09-30 | 2019-06-11 | 钜泉光电科技(上海)股份有限公司 | A kind of detection circuit of voltage differential sample circuit parameter |
-
2020
- 2020-01-02 CN CN202010001303.0A patent/CN111145701B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003107521A (en) * | 2001-09-27 | 2003-04-09 | Samsung Electronics Co Ltd | Liquid crystal display device |
| CN1527271A (en) * | 2003-03-03 | 2004-09-08 | ��ʽ����������ʾ�� | Image display device |
| CN101408705A (en) * | 2008-11-24 | 2009-04-15 | 上海广电光电子有限公司 | Liquid crystal display panel and drive method thereof |
| CN103507658A (en) * | 2012-06-21 | 2014-01-15 | 广东高标电子科技有限公司 | Electric vehicle and bus control system thereof |
| CN107068098A (en) * | 2017-05-16 | 2017-08-18 | 深圳市华星光电技术有限公司 | The driving method and device of a kind of liquid crystal display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111145701A (en) | 2020-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9640128B2 (en) | Gamma voltage tuning method and gamma voltage tuning system | |
| US20200126497A1 (en) | Grayscale Adjustment Method and Grayscale Adjustment Device for Display Panel | |
| US9953610B2 (en) | Method for regulating common voltage, regulating device and display device | |
| US20160351139A1 (en) | Adjusting method of display parameter and liquid crystal display system | |
| US10453378B2 (en) | Regulating method and regulating apparatus for a driving voltage of a display module | |
| CN108550350B (en) | Overcurrent protection system and overcurrent protection method of liquid crystal display panel | |
| CN107093410B (en) | Liquid crystal display brightness regulation and control method and device and liquid crystal display screen | |
| KR20060079981A (en) | Liquid crystal display, and method and apparatus of automatically adjusting flicker of the same | |
| US20130093720A1 (en) | Method for determining touch position of a touch panel | |
| US10714042B2 (en) | Display panel driving method, driving circuit, display panel, and display device | |
| CN105390111A (en) | Detection method and device of time sequence controller | |
| US9886925B2 (en) | Apparatus for adjusting voltage at common electrode and method thereof | |
| EP3712879A1 (en) | Grayscale compensation data measuring method of liquid crystal display panel | |
| CN101398999A (en) | Display equipment test device and method | |
| CN113763857B (en) | Display panel driving method, driving device and computer equipment | |
| CN106057163A (en) | Gray-scale compensation method, gray-scale compensation device and liquid crystal display apparatus | |
| CN111145701B (en) | Voltage adjusting method and device of display panel and display panel | |
| CN112216236A (en) | Display panel compensation method, device and system | |
| US9905149B2 (en) | Driving circuit, driving method, and display device | |
| US20190325830A1 (en) | Display control method and apparatus, computer readable storage medium, and computer device | |
| US20150255024A1 (en) | Liquid crystal display method and liquid crystal display device | |
| US20180166031A1 (en) | Driving device of liquid crystal display panel | |
| KR20110114130A (en) | The apparatus for liquid crystal display | |
| TWI559290B (en) | Driving method and system for liquid crystal display | |
| CN112614468B (en) | Brightness compensation method and system of display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |