CN117116196A - Display compensation method and display panel - Google Patents
Display compensation method and display panel Download PDFInfo
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- CN117116196A CN117116196A CN202311156260.3A CN202311156260A CN117116196A CN 117116196 A CN117116196 A CN 117116196A CN 202311156260 A CN202311156260 A CN 202311156260A CN 117116196 A CN117116196 A CN 117116196A
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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
- G09G3/20—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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
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Abstract
The application provides a display compensation method and a display panel. The display compensation method is applied to the display panel and comprises the following steps: transmitting a control signal to the current line scanning line and transmitting a data signal to the data line to control the current line pixels to display a picture in the current effective detection time period; judging whether the current line scanning line is a frame start line scanning line or not; and responding to the current line scanning line as the frame starting line scanning line, and compensating the data signal of the pixels of the current line in the current effective detection time period. The application judges whether the current line scanning line is the frame start line scanning line or not so as to compensate the data signals of the frame start line pixels in the current detection effective time period, thereby compensating the display brightness of the frame start line pixels and improving the color cast phenomenon between the frame start line pixels and the rest line pixels.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display compensation method and a display panel.
Background
With the development of small spacing, an LED (Light-Emitting Diode) display screen has raised requirements for row driving, and the outdoor large screen is switched from a P-channel Metal-Oxide-Semiconductor Field-Effect Transistor (PMOSFET) to a multifunctional row driving with higher integration level and higher function.
Then, in the related art, a color cast problem occurs during the row driving.
Disclosure of Invention
The application mainly solves the technical problem of providing a display compensation method and a display panel, and solves the problem of color cast in the row driving process in the prior art.
In order to solve the technical problems, the first technical scheme provided by the application is as follows: the display compensation method is applied to a display panel, and the display panel comprises a display panel main body, a time sequence control unit, a scanning driving unit and a source driving unit; the display panel main body comprises data lines and scanning lines, and the data lines and the scanning lines are crisscrossed to define a plurality of pixels for displaying pictures; the timing control unit is used for respectively outputting clock signals to the source electrode driving unit and the scanning driving unit, the source electrode driving unit is used for transmitting data signals to the data lines according to the clock signals, and the scanning driving unit is used for transmitting control signals to the scanning lines according to the clock signals;
the display compensation method comprises the following steps:
transmitting a control signal to a current line scanning line and transmitting a data signal to the data line so as to control the current line pixels to display a picture in a current effective detection time period;
judging whether the current line scanning line is a frame start line scanning line or not;
and responding to the current line scanning line as the frame start line scanning line, and compensating the data signals of the pixels of the current line in the current detection effective time period.
The method for transmitting the control signal to the current line scanning line and transmitting the data signal to the data line to control the current line pixels to display the picture in the current effective detection time period comprises the following steps:
and outputting a control signal to the current line scanning line and outputting an original data signal to the data line so as to control the current line pixels to display a picture in the current detection effective time period.
Wherein after the judging whether the current line scan line is the frame start line scan line, the method further comprises:
and controlling the pixels of the current line to display a picture with the original data signals in the current detection effective time period in response to the current line scanning line being the rest line scanning lines except the frame start line scanning line.
Wherein, the responding to the current line scanning line as the frame start line scanning line before compensating the data signal of the current line pixel in the current detection effective time period further comprises:
acquiring a pulse width lookup table; the pulse width lookup table comprises pulse width compensation values of data signals under different gray scales.
Wherein the obtaining the pulse width lookup table includes:
and under different gray scales, acquiring the display brightness value of the pixels of the frame start line and the display brightness values of the pixels of the other lines, comparing the display brightness value of the pixels of the frame start line with the display brightness values of the pixels of the other lines under the corresponding gray scales, and acquiring the pulse width compensation values of the data signals of the pixels of the frame start line under different gray scales according to the comparison result to obtain the pulse width lookup table.
The comparing the display brightness value of the pixels of the frame start line with the display brightness values of the pixels of the other lines under the corresponding gray scale comprises the following steps:
comparing the display brightness value of the pixels of the frame start line with the brightness value of a line of pixels except the pixels of the frame start line under the corresponding gray scale;
or alternatively, the first and second heat exchangers may be,
and comparing the display brightness value of the pixels of the frame start line with the average brightness values of the pixels of the rest lines except the pixels of the frame start line under the corresponding gray scale.
The responding the current line scanning line as the frame start line scanning line compensates the original data signal of the current line pixel and displays a picture in the current detection effective time period, and the method comprises the following steps:
and responding to the current line scanning line as the frame starting line scanning line, searching the pulse width lookup table, compensating the data signal of the current line pixel in the current effective detection time period according to the pulse width lookup table, and displaying a picture.
The frame start line scanning line is configured as the first scanning line transmitted with the control signal in the current detection.
In order to solve the technical problems, a second technical scheme provided by the application is as follows: a display panel is provided, wherein the display panel is used for implementing the display compensation method, and the display panel comprises:
a display panel main body including data lines and scan lines, the data lines and the scan lines crossing each other to define a plurality of pixels for displaying a picture;
a source driving unit for transmitting a data signal to the data line;
a scan driving unit for transmitting a control signal to the scan line;
a timing control unit for outputting clock signals to the source driving unit and the scan driving unit, respectively;
and the judging device is used for judging whether the current line scanning line is a frame start line scanning line or not.
The display panel further comprises a compensation unit, wherein the compensation unit is used for acquiring and storing a pulse width lookup table.
The application has the beneficial effects that: the application provides a display compensation method and a display panel, which are applied to the display panel, wherein the display panel comprises a display panel main body, a time sequence control unit, a scanning driving unit and a source driving unit; the display panel main body comprises data lines and scanning lines, and the data lines and the scanning lines are crisscrossed to define a plurality of pixels for displaying pictures; the time sequence control unit is used for outputting clock signals to the source electrode driving unit and the scanning driving unit respectively, the source electrode driving unit is used for transmitting data signals to the data lines according to the clock signals, and the scanning driving unit is used for transmitting control signals to the scanning lines according to the clock signals; the display compensation method comprises the following steps: transmitting a control signal to the current line scanning line and transmitting a data signal to the data line to control the current line pixels to display a picture in the current effective detection time period; judging whether the current line scanning line is a frame start line scanning line or not; and responding to the current line scanning line as the frame starting line scanning line, and compensating the data signal of the pixels of the current line in the current effective detection time period. The application judges whether the current line scanning line is the frame start line scanning line or not so as to compensate the data signals of the frame start line pixels in the current detection effective time period, thereby compensating the display brightness of the frame start line pixels and improving the color cast phenomenon between the frame start line pixels and the rest line pixels.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a display panel in the prior art;
FIG. 2 is a partial timing diagram of a prior art data line and scan line;
FIG. 3 is a timing diagram of a prior art scan line;
FIG. 4 is a flow chart illustrating an embodiment of a display compensation method according to the present application;
FIG. 5 is a pulse width look-up table provided by the present application;
FIG. 6 is a timing diagram of the data line before and after compensation according to the present application;
fig. 7 is a schematic structural diagram of an embodiment of a display panel provided by the present application.
Reference numerals illustrate:
scan line G/G1/G2 … …/Gn, data line D/D'/D1/D2/D3 … …/Dn, pulse width compensation value Deltat0/Deltat1/Deltat2 … … Deltat 255, pulse width T.
Detailed Description
The following describes embodiments of the present application in detail with reference to the drawings.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms "first," "second," "third," and the like in this disclosure are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an embodiment of a display panel in the prior art, fig. 2 is a partial timing diagram of data lines and scan lines in the prior art, and fig. 3 is a timing diagram of scan lines in the prior art.
In the prior art, as shown in fig. 1, the scanning lines are denoted by G1, G2 … … Gn, the data lines are denoted by D1, D2, D3 … … Dn, the source driving unit is connected to the data lines, and the scanning driving unit is connected to the scanning lines.
The cathode of the LED is connected with the scanning line, and the anode is connected with the data line. When the control signal for controlling the scan line is low, the voltage on the scan line (i.e., the cathode voltage of the LED) is pulled down, and the voltage on the data line (i.e., the anode voltage of the LED) is displayed. The pulse width of the voltage on the data line determines the brightness of the light emitted from the LED.
As shown in fig. 2, when the display panel displays a frame of picture, the time from the closing of the first line scan line to the opening of the second line scan line is the same as the time from the closing of the second line scan line to the opening of the third line scan line and the time from the closing of the n-1 line to the opening of the n line scan line. After the end of a frame picture, the existence of the time before the start of the next frame picture, namely the existence of blank time (V-blanking), can lead to that the time from the closing of the last line scanning line (namely the nth line scanning line) of the frame picture to the opening of the first line scanning line of the next frame picture is different from the time from the closing of the first line scanning line to the opening of the second line scanning line in the frame picture, further, due to the existence of parasitic capacitance C in the data line, the release of charges on the parasitic capacitance C is different between each line of pixels (namely corresponding to each line of LEDs), so that the release degree of the parasitic capacitance C before the display of the first line of pixels is different from the release degree of the parasitic capacitance C displayed by other lines of pixels, and the display brightness of the first line of pixels is different from the display brightness of the pixels of other lines of pixels, and the color cast phenomenon occurs. Since the driving current flowing through the LED is small in the low gray state, the current ratio flowing through the parasitic capacitor C is larger, and the color cast phenomenon is more obvious.
For this type of LED lighting, only at the moment when each row of pixels is driven, i.e. the current row scan line is on, a data signal is sent to the data line to control the current row of LEDs to light, i.e. the current row of pixels to light. If the row scan line is off, the row LEDs do not emit light. As shown in fig. 3, the driving timing of each row scan line includes an active time in which the row scan line turns on the LEDs to emit light and a blanking time in which the row scan line turns off the LEDs to emit no light, which are alternately arranged. It should be understood that, in a frame, the driving timing of each line of scan lines includes a valid period and a blank period in succession. Since the frequency of switching between the effective time and the blank time is fast, the luminance presented to the human eye is not the luminance of the light emission accumulated by the LED in the single effective period, but the luminance of the light emission accumulated by the LED in the effective period after being averaged in the effective time and the blank period, that is, the average luminance shown by the broken line. That is, the average luminance may be lower than the light emission luminance accumulated by the light emission of the LEDs during the effective time. Based on the above, when the overall brightness is darker, the average brightness is lower, when the overall brightness is brighter, the average brightness is higher, and accordingly, the problem of uneven display can be improved by increasing or decreasing the average brightness, and the accumulated light-emitting brightness of the LED light-emitting in the effective time is related to the data signal on the data line. It can be understood that if the data signals on the data lines can be compensated regularly in the effective time, the color cast phenomenon of the pixels in the first row can be improved.
Accordingly, the present application is directed to a display compensation method for solving the above-mentioned problems. The display compensation method is applied to a display panel.
As shown in fig. 7, the display panel includes a display panel body, a timing control unit, a scan driving unit, and a source driving unit. The display panel body includes data lines and scan lines, which cross each other to define a plurality of pixels (not shown) for displaying a picture. The time sequence control unit is used for outputting clock signals to the source electrode driving unit and the scanning driving unit respectively, the source electrode driving unit is used for transmitting data signals to the data lines according to the clock signals, and the scanning driving unit is used for transmitting control signals to the scanning lines according to the clock signals.
The scanning lines are denoted by G/G1, G2 … … Gn, and the data lines are denoted by D/D1, D2, D3 … … Dn.
One for each pixel. One end of the LED is connected with the data line, and the other end of the LED is connected with the scanning line.
Referring to fig. 4 to 6, fig. 4 is a flowchart illustrating an embodiment of a display compensation method according to the present application, fig. 5 is a pulse width lookup table according to the present application, and fig. 6 is a timing chart before and after compensation of a data line according to the present application.
As shown in fig. 4, the specific steps of the display compensation method are as follows:
s10: and transmitting a control signal to the current line scanning line and transmitting a data signal to the data line so as to control the current line pixels to display a picture in the current effective detection time period.
Specifically, the scan driving unit transmits a control signal to the current line scan line to enable the current line scan to be turned on in the effective period, and the source driving unit transmits a data signal to the data line to enable the current line LED to emit light, that is, the current line pixel displays a picture in the current effective period.
As shown in fig. 3, the driving timing of the scan line of the present application is the same as that of the scan line in the related art. In each detection picture, the driving time sequence of the scanning line comprises a continuous effective time period and a blank time period. Each row of pixels only displays the picture in the effective time period of each detected picture, and does not display the picture in the blank time period.
The step S10 specifically includes: and outputting a control signal to the current line scanning line and outputting an original data signal to the data line to control the current line pixels to display a picture in the current effective detection time period.
The original data signal is the data signal transmitted to each data line by the source driving unit before the current row of pixels are compensated.
It should be noted that, under different gray scales, the magnitude of the data signal transmitted from the source driving unit to the data line is different. That is, the corresponding original data signals at different gray scales are different.
It will be appreciated that the data signals transmitted by the source drive unit to each data line are identical prior to compensation for the current row of pixels. That is, the data signals for each row of pixels are the same before compensation is performed for the current row of pixels.
S20: judging whether the current line scanning line is the frame start line scanning line.
Specifically, it is determined whether the opened current line is the frame start line.
The frame start line is configured as the first line to be transmitted with the control signal in the current detection. It can be understood that the frame start line is the first line, and in each detected frame, the frame start line pixels corresponding to the frame start line are the pixel lines of the first display frame.
S30: and responding to the current line scanning line as the frame starting line scanning line, and compensating the data signal of the pixels of the current line in the current effective detection time period.
Specifically, if the current line scan line is the frame start line scan line, compensating the pulse width of the original data signal of the current line pixel in the current detection effective period and displaying a picture, so that the average brightness of the accumulated light-emitting brightness of the LEDs in the current line pixel in the current detection effective period and the blank period is equal to the average brightness of the display panel, thereby improving the color cast phenomenon of the first line pixel and further ensuring the uniformity of the display brightness of the display panel.
It is understood that the pulse width of the data signal refers to the duration of the high level of the data signal during the current active detection time. The longer the duration of the high level of the data signal, the larger the pulse width of the data signal, the longer the light emission duration of the LED, and the greater the accumulated light emission luminance.
In one embodiment, the pulse width compensation of the original data signal of the current line pixel starts to be compensated at the initial time within the current detection valid period, so as to ensure the continuity of the display screen of the current line pixel.
It should be noted that, in the embodiment of the present application, the pulse width of the data signal is compensated, and the pulse width of the data signal is changed to change the light emission cumulative brightness of the LED in the current detection effective period, instead of changing the pulse amplitude of the data signal (i.e. the magnitude of the data voltage).
In step S20: after judging whether the current line scan line is the frame start line scan line, further comprising:
step S31: and controlling the pixels of the current line to display a picture by the original data signals in the current effective detection time period in response to the current line being the rest line except the frame initial line.
Specifically, if the current line scan line is the rest line scan lines except the frame start line scan line, the current line pixels are controlled to display the picture with the original data signal in the current effective detection time period.
It will be understood that the present application performs pulse width compensation only on the data signals of the pixels of the frame start line, and does not compensate for the pulse width of the data signals of the pixels of the other lines except the pixel of the detection start line. And the application performs pulse width compensation on the data signal in the current detection effective time period, rather than performing pulse width compensation on the data signal in the blank time period.
The step S31 and the step S30 are not sequential.
In one embodiment, in step S30: according to the judgment result, before compensating the data signal of the current row of pixels in the current detection effective time period, the method further comprises the following steps: acquiring a pulse width lookup table; the pulse width lookup table comprises pulse width compensation values of the data signals under different gray scales.
Specifically, as shown in fig. 5, the pulse width lookup table includes pulse width compensation values of the data signals at different gray scales.
The step of obtaining the pulse width lookup table specifically includes: and under different gray scales, acquiring display brightness values of pixels of the frame start line and display brightness values of pixels of the other lines, comparing the display brightness values of the pixels of the frame start line with the display brightness values of the pixels of the other lines under the corresponding gray scales, and acquiring pulse width compensation values of data signals of the pixels of the frame start line under different gray scales according to comparison results to obtain a pulse width lookup table.
It can be understood that, under a gray level, the display brightness value of the pixel in the detection start line for displaying the picture with the original data signal is obtained, the display brightness value of the pixel in the frame start line for displaying the picture with the original data signal is compared with the display brightness values of the pixels in the other lines, and the pulse width compensation value of the data signal of the pixel in the frame start line under the gray level is obtained according to the comparison result.
Repeating the steps, and further obtaining pulse width compensation values of data signals of pixels of a frame start line under different gray scales to obtain a pulse width lookup table. The actual values of the pulse width compensation values are denoted by Δt0, Δt1, Δt2 … … Δt255.
The pulse width compensation value may be positive, negative, or zero. As shown in fig. 6, that is, assuming that the pulse width of the original data signal is T, the absolute value of the pulse width compensation value is Δt. When the pulse width compensation value is positive, the pulse width of the original data signal of the pixels of the frame start line is required to be increased, namely, the pulse width of the data signal of the pixels of the frame start line after compensation is T+Deltat; when the pulse width compensation value is negative, the pulse width of the original data signal of the pixels of the frame start line is required to be reduced, namely, the pulse width of the data signal of the pixels of the frame start line after compensation is T-delta T; when the pulse width compensation value is zero, the pulse width of the original data signal of the current row of pixels is not required to be changed, and the pulse width of the data signal of the frame start row of pixels is T.
Further, the step of comparing the display brightness value of the pixels in the frame start line with the display brightness values of the pixels in the other lines corresponding to the gray scale specifically includes: comparing the display brightness value of the pixels of the frame start line with the brightness value of the pixels of a line except the pixels of the frame start line under the corresponding gray scale; or, the display luminance value of the pixels of the frame start line is compared with the average luminance values of the pixels of the remaining lines except the pixels of the frame start line at the corresponding gray scale.
In one embodiment, the display luminance value of the pixels of the frame start line is compared with the average luminance values of the pixels of the remaining lines except the pixels of the frame start line at the corresponding gray scale. In theory, the display brightness values of the pixels of the other rows except the pixels of the frame start row are equal, but in practical application, there is a problem of voltage drop on the data line, so that there is a difference between the display brightness of the pixels of the other rows, and the display brightness value of the pixels of the frame start row is compared with the average brightness value of the pixels of the other rows except the pixels of the frame start row under the corresponding gray scale, so that the display brightness of the pixels of the frame start row after compensation can be equal to the average brightness of the pixels of the other rows, so as to ensure the brightness uniformity of the display panel.
In one embodiment, in response to the current line being the frame start line, the step of compensating the original data signal of the current line pixel and displaying the picture in the current effective detection period specifically includes: and responding to the current line scanning line as the frame initial line scanning line, searching a pulse width lookup table, compensating the data signal of the current line pixel in the current effective detection time period according to the pulse width lookup table, and displaying a picture.
The application provides a display compensation method which is applied to a display panel, wherein the display panel comprises a display panel main body, a time sequence control unit, a scanning driving unit and a source driving unit; the display panel main body comprises data lines and scanning lines, and the data lines and the scanning lines are crisscrossed to define a plurality of pixels for displaying pictures; the time sequence control unit is used for outputting clock signals to the source electrode driving unit and the scanning driving unit respectively, the source electrode driving unit is used for transmitting data signals to the data lines according to the clock signals, and the scanning driving unit is used for transmitting control signals to the scanning lines according to the clock signals; the display compensation method comprises the following steps: transmitting a control signal to the current line scanning line and transmitting a data signal to the data line to control the current line pixels to display a picture in the current effective detection time period; judging whether the current line scanning line is a frame start line scanning line or not; and responding to the current line scanning line as the frame starting line scanning line, and compensating the data signal of the pixels of the current line in the current effective detection time period. The application judges whether the current line scanning line is the frame start line scanning line or not so as to compensate the data signals of the frame start line pixels in the current detection effective time period, thereby compensating the display brightness of the frame start line pixels and improving the color cast phenomenon between the frame start line pixels and the rest line pixels.
Referring to fig. 7, fig. 7 is a schematic structural diagram of a display panel according to an embodiment of the application.
The application provides a display panel which is used for realizing the display compensation method.
The display panel comprises a display panel body, a source electrode driving unit, a scanning driving unit, a time sequence control unit and a judging device.
The display panel body includes data lines and scan lines, and the data lines and the scan lines cross each other to define a plurality of pixels for displaying a picture. The source driving unit is used for transmitting data signals to the data lines.
The scan driving unit is used for transmitting a control signal to the scan lines. The time sequence control unit is used for outputting clock signals to the source electrode driving unit and the scanning driving unit respectively. The judging unit is used for judging whether the current line scanning line is the frame start line scanning line.
The display panel further comprises a compensation unit for acquiring and storing the pulse width lookup table.
The scanning driving end transmits a control signal to the scanning line according to the clock signal output by the time sequence control unit so as to control the scanning line to be opened. The source electrode driving unit transmits a data signal to the data line according to the clock signal output by the time sequence control unit so as to enable the pixels to display pictures.
The position of the judging device is not limited, and the judging device is selected according to actual requirements. The judging unit and the compensating unit may be both disposed in the source driving unit or may be both disposed outside the source driving unit.
In this embodiment, the determiner and the compensation unit are both disposed in the source driving unit.
The foregoing is only the embodiments of the present application, and therefore, the patent protection scope of the present application is not limited thereto, and all equivalent structures or equivalent flow changes made by the content of the present specification and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the patent protection scope of the present application.
Claims (10)
1. A display compensation method is applied to a display panel, wherein the display panel comprises a display panel main body, a time sequence control unit, a scanning driving unit and a source driving unit; the display panel main body comprises data lines and scanning lines, and the data lines and the scanning lines are crisscrossed to define a plurality of pixels for displaying pictures; the timing control unit is used for respectively outputting clock signals to the source electrode driving unit and the scanning driving unit, the source electrode driving unit is used for transmitting data signals to the data lines according to the clock signals, and the scanning driving unit is used for transmitting control signals to the scanning lines according to the clock signals;
the display compensation method is characterized by comprising the following steps:
transmitting a control signal to a current line scanning line and transmitting a data signal to the data line so as to control the current line pixels to display a picture in a current effective detection time period;
judging whether the current line scanning line is a frame start line scanning line or not;
and responding to the current line scanning line as the frame start line scanning line, and compensating the data signals of the pixels of the current line in the current detection effective time period.
2. The display compensation method according to claim 1, wherein transmitting the control signal to the current line and transmitting the data signal to the data line to control the current line pixels to display the picture in the current detection valid period comprises:
and outputting a control signal to the current line scanning line and outputting an original data signal to the data line so as to control the current line pixels to display a picture in the current detection effective time period.
3. The display compensation method according to claim 2, wherein after the determining whether the current line is a frame start line, further comprising:
and controlling the pixels of the current line to display a picture with the original data signals in the current detection effective time period in response to the current line scanning line being the rest line scanning lines except the frame start line scanning line.
4. The display compensation method of claim 2, wherein the responding to the current line being the frame start line further comprises, prior to compensating the data signal of the current line of pixels during the current detected active period:
acquiring a pulse width lookup table; the pulse width lookup table comprises pulse width compensation values of data signals under different gray scales.
5. The display compensation method of claim 4, wherein the obtaining a pulse width look-up table comprises:
and under different gray scales, acquiring the display brightness value of the pixels of the frame start line and the display brightness values of the pixels of the other lines, comparing the display brightness value of the pixels of the frame start line with the display brightness values of the pixels of the other lines under the corresponding gray scales, and acquiring the pulse width compensation values of the data signals of the pixels of the frame start line under different gray scales according to the comparison result to obtain the pulse width lookup table.
6. The display compensation method according to claim 5, wherein comparing the display luminance value of the pixels of the frame start line with the display luminance values of the pixels of the remaining lines at the corresponding gray level comprises:
comparing the display brightness value of the pixels of the frame start line with the brightness value of a line of pixels except the pixels of the frame start line under the corresponding gray scale;
or alternatively, the first and second heat exchangers may be,
and comparing the display brightness value of the pixels of the frame start line with the average brightness values of the pixels of the rest lines except the pixels of the frame start line under the corresponding gray scale.
7. The display compensation method according to claim 4, wherein said compensating the data signal of the pixels of the current line for the current detection valid period and displaying the picture in response to the current line being the frame start line, comprises:
and responding to the current line scanning line as the frame starting line scanning line, searching the pulse width lookup table, compensating the data signal of the current line pixel in the current effective detection time period according to the pulse width lookup table, and displaying a picture.
8. The display compensation method of claim 1, wherein the start-of-frame line is configured as the first line in the current detection to which the control signal is transmitted.
9. A display panel for implementing the display compensation method of any one of claims 1 to 8, the display panel comprising:
a display panel main body including data lines and scan lines, the data lines and the scan lines crossing each other to define a plurality of pixels for displaying a picture;
a source driving unit for transmitting a data signal to the data line;
a scan driving unit for transmitting a control signal to the scan line;
a timing control unit for outputting clock signals to the source driving unit and the scan driving unit, respectively;
and the judging device is used for judging whether the current line scanning line is a frame start line scanning line or not.
10. The display panel of claim 9, further comprising a compensation unit for retrieving and storing a pulse width look-up table.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782381A (en) * | 2016-12-28 | 2017-05-31 | 深圳市华星光电技术有限公司 | The drive device and driving method of a kind of display panel |
| CN109243397A (en) * | 2018-11-12 | 2019-01-18 | 惠科股份有限公司 | Display control unit and display equipment |
| CN109285517A (en) * | 2018-11-12 | 2019-01-29 | 惠科股份有限公司 | Display control unit and display panel |
| CN109491158A (en) * | 2018-11-16 | 2019-03-19 | 昆山龙腾光电有限公司 | A kind of display panel and display device |
| CN112017575A (en) * | 2020-06-23 | 2020-12-01 | 京东方科技集团股份有限公司 | Driving method, driving module and display device |
| US20210035504A1 (en) * | 2019-08-02 | 2021-02-04 | Samsung Display Co., Ltd. | Display device adjusting a scan pulse |
| TWI779710B (en) * | 2021-07-07 | 2022-10-01 | 大陸商北京集創北方科技股份有限公司 | Scanning sequence control method and LED display driver and LED display using the same |
| CN116072060A (en) * | 2023-03-17 | 2023-05-05 | 惠科股份有限公司 | Display panel driving method, driving circuit and LED display device |
| WO2023115657A1 (en) * | 2021-12-24 | 2023-06-29 | 惠州华星光电显示有限公司 | Display panel and display device |
-
2023
- 2023-09-07 CN CN202311156260.3A patent/CN117116196A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782381A (en) * | 2016-12-28 | 2017-05-31 | 深圳市华星光电技术有限公司 | The drive device and driving method of a kind of display panel |
| CN109243397A (en) * | 2018-11-12 | 2019-01-18 | 惠科股份有限公司 | Display control unit and display equipment |
| CN109285517A (en) * | 2018-11-12 | 2019-01-29 | 惠科股份有限公司 | Display control unit and display panel |
| CN109491158A (en) * | 2018-11-16 | 2019-03-19 | 昆山龙腾光电有限公司 | A kind of display panel and display device |
| US20210035504A1 (en) * | 2019-08-02 | 2021-02-04 | Samsung Display Co., Ltd. | Display device adjusting a scan pulse |
| CN112017575A (en) * | 2020-06-23 | 2020-12-01 | 京东方科技集团股份有限公司 | Driving method, driving module and display device |
| TWI779710B (en) * | 2021-07-07 | 2022-10-01 | 大陸商北京集創北方科技股份有限公司 | Scanning sequence control method and LED display driver and LED display using the same |
| WO2023115657A1 (en) * | 2021-12-24 | 2023-06-29 | 惠州华星光电显示有限公司 | Display panel and display device |
| CN116072060A (en) * | 2023-03-17 | 2023-05-05 | 惠科股份有限公司 | Display panel driving method, driving circuit and LED display device |
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