CN116343639A - Data compensation method of sub-pixel and display panel - Google Patents
Data compensation method of sub-pixel and display panel Download PDFInfo
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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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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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]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3258—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] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
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- G—PHYSICS
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- 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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
Abstract
The application discloses a data compensation method and a display panel of a sub-pixel, wherein the sub-pixel comprises a first sub-pixel, a second sub-pixel adjacent to one side of the first sub-pixel and a third sub-pixel adjacent to the other side of the first sub-pixel, and the data compensation method of the sub-pixel comprises the following steps: acquiring a first influence value of the first sub-pixel by the second sub-pixel and a second influence value of the first sub-pixel by the third sub-pixel; judging whether the first influence value and the second influence value are in the same direction or not; if yes, determining a data compensation value of the first sub-pixel according to one of the first influence value and the second influence value; if not, determining the data compensation value of the first sub-pixel according to the superposition value of the first influence value and the second influence value. Through the structure, gray scale extrusion of the sub-pixels is improved, and then the display effect of the display picture is improved.
Description
Technical Field
The present invention relates to the field of display panels, and in particular, to a data compensation method for sub-pixels and a display panel.
Background
The OLED (Organic Light Emitting Diode ) technology can be widely applied, and has many advantages compared with other technologies, and because of the advantages, more and more display manufacturers worldwide invest in OLED research and development, and the industrialization process of the OLED is greatly promoted. The main OLED display driving section (described in one sub-pixel unit) includes a TFT (thin film transistor) that controls light emission of an OLED device, a TFT that controls the magnitude of a current flowing through the OLED device, a TFT that controls an electric potential on an initializing storage capacitor, a TFT that compensates for a threshold voltage of a driving TFT, a TFT that controls a data voltage to charge the storage capacitor, and the like.
In the current popular RGB (sub-pixel) arrangement, there are two common arrangement modes, one is that three sub-pixels RGB of one pixel are arranged in a row and are respectively controlled by a Scan line (scanning line), and storage capacitors in the three sub-pixels RGB are charged and discharged simultaneously; the other is that three sub-pixels RGB of a pixel are arranged in two rows, time jitter is added together according to an algorithm to realize pixel display, but storage capacitors in the three sub-pixels RGB are only charged and discharged simultaneously by RG or BG.
Since the emission of the sub-pixel R (red) is greatly affected by G (green) and B (blue), the emission efficiency of R decreases when R is affected, resulting in a change in the brightness of the pure R at the time of low Gray scale, a phenomenon called Gray scale squeezing.
Disclosure of Invention
The technical problem that this application mainly solves is to provide a data compensation method and display panel of sub-pixel to improve gray scale extrusion phenomenon, and then promote the display effect of display screen.
In order to solve the above-mentioned problem, the present application provides a data compensation method of a sub-pixel, wherein the sub-pixel includes a first sub-pixel, a second sub-pixel adjacent to one side of the first sub-pixel, and a third sub-pixel adjacent to the other side of the first sub-pixel, the data compensation method includes: acquiring a first influence value of the first sub-pixel by the second sub-pixel and a second influence value of the first sub-pixel by the third sub-pixel; judging whether the first influence value and the second influence value are in the same direction or not; wherein the same direction includes that the first influence value and the second influence value are both positive values and the first influence value and the second influence value are both negative values; if yes, determining a data compensation value of the first sub-pixel according to one of the first influence value and the second influence value; if not, determining the data compensation value of the first sub-pixel according to the superposition value of the first influence value and the second influence value.
Wherein the step of determining the data compensation value of the first sub-pixel according to one of the first influence value and the second influence value comprises: if the first influence value and the second influence value are positive values, further judging whether the first influence value is larger than the second influence value or not; if yes, determining a data compensation value of the first sub-pixel according to the first influence value; if not, determining a data compensation value of the first sub-pixel according to the second influence value; if the first influence value and the second influence value are negative, further judging whether the first influence value is larger than the second influence value or not; if yes, determining a data compensation value of the first sub-pixel according to the second influence value; if not, determining the data compensation value of the first sub-pixel according to the first influence value.
Wherein the step of determining the data compensation value of the first sub-pixel according to the superposition value of the first influence value and the second influence value includes: calculating the sum value of the first influence value and the second influence value to obtain an influence superposition value of the second sub-pixel and the third sub-pixel on the first sub-pixel; and determining a data compensation value of the first sub-pixel by using the influence superposition value.
Wherein the determining the data compensation value of the first sub-pixel further includes: acquiring an initial data voltage input by a data line of the first sub-pixel when the first sub-pixel displays a set gray scale; determining an output data voltage of a data line of the first sub-pixel using the initial data voltage and the data compensation value; and driving the first sub-pixel to display the set gray scale by using the output data voltage.
Wherein the step of obtaining the first influence value of the first sub-pixel by the second sub-pixel and the second influence value of the first sub-pixel by the third sub-pixel includes: acquiring a first display gray level of the first sub-pixel, a second display gray level of the second sub-pixel and a third display gray level of the third sub-pixel under a picture to be displayed; acquiring a first influence value of the second display gray scale displayed by the second sub-pixel when the first sub-pixel displays the first display gray scale, and a second influence value of the third display gray scale displayed by the third sub-pixel when the first sub-pixel displays the first display gray scale.
The step of obtaining a first influence value of the second display gray scale displayed by the second sub-pixel when the first sub-pixel displays the first display gray scale and a second influence value of the third display gray scale displayed by the third sub-pixel when the first sub-pixel displays the first display gray scale includes: inputting a first data voltage corresponding to the first display gray scale to a data line of the first sub-pixel through a driving circuit, inputting a second data voltage corresponding to the second display gray scale to a data line of the second sub-pixel, and obtaining a change value of the first data voltage on the data line of the first sub-pixel under the influence of the second data voltage to obtain a first influence value; and inputting a first data voltage corresponding to the first display gray scale to the data line of the first sub-pixel through the driving circuit, inputting a third data voltage corresponding to the third display gray scale to the data line of the third sub-pixel, and obtaining a change value of the first data voltage on the data line of the first sub-pixel under the influence of the third data voltage to obtain the second influence value.
Wherein the step of obtaining the first influence value of the first sub-pixel from the second sub-pixel and the second influence value of the first sub-pixel from the third sub-pixel further comprises: judging whether the second sub-pixel and the third sub-pixel are positioned on two opposite sides of the first sub-pixel or not; if yes, the first influence value and the second influence value are obtained; if not, determining the sub-pixel nearest to the first sub-pixel as the second sub-pixel or the third sub-pixel, and acquiring the corresponding first influence value or the second influence value.
Wherein the step of obtaining the first influence value of the first sub-pixel by the second sub-pixel and the second influence value of the first sub-pixel by the third sub-pixel further comprises: establishing a first table according to the influence value of the second sub-pixel to display the second gray scale when the first sub-pixel displays the first gray scale; wherein the first gray scale comprises 0-255 gray scales; establishing a second table according to the influence value of the third sub-pixel to display a third gray scale when the first sub-pixel displays the first gray scale; wherein the second gray scale comprises 0-255 gray scales; acquiring a first display gray level of the first sub-pixel, a second display gray level of the second sub-pixel and a third display gray level of the third sub-pixel of a picture to be displayed; wherein the first display gray scale, the second display gray scale and the third display gray scale are any one of 0-255 gray scales; acquiring the first influence value from the first table according to the first display gray scale and the second display gray scale; and acquiring the second influence value from the second table according to the first display gray scale and the third display gray scale.
The first sub-pixel is a red sub-pixel, the second sub-pixel is one of a blue sub-pixel and a green sub-pixel, and the third sub-pixel is the other of the blue sub-pixel and the green sub-pixel.
The application further provides a display panel, wherein the display panel comprises pixel units arranged in an array, each pixel unit at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein the first sub-pixel is arranged in parallel with and adjacent to at least one of the second sub-pixel and the third sub-pixel, and the data voltage of the first sub-pixel is adjusted according to the data compensation method of the sub-pixel in any method embodiment.
The beneficial effects of this application are: the first influence value of the first sub-pixel by the second sub-pixel and the second influence value of the first sub-pixel by the third sub-pixel are obtained, and the data compensation value of the first sub-pixel is determined according to the influence values, so that the data voltage of the first sub-pixel is compensated, the display gray scale of the first sub-pixel can reach the preset display gray scale, and the phenomenon that the display gray scale of the first sub-pixel is extruded by the gray scales of other sub-pixels to cause poor picture display is avoided.
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 introduced below, and it is 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 inventive effort for a person skilled in the art.
FIG. 1 is a graph of voltage variation between two adjacent data lines;
FIG. 2 is a flow chart illustrating an embodiment of a method for data compensation of sub-pixels according to the present application;
FIG. 3 is a schematic diagram illustrating an embodiment of a pixel arrangement according to the present application;
FIG. 4 is a flowchart illustrating the first embodiment of step S11 in FIG. 1;
FIG. 5 is a flowchart illustrating a second embodiment of step S11 in FIG. 1;
FIG. 6 is a schematic structural diagram of a first embodiment of a display panel according to the present application;
fig. 7 is a schematic structural diagram of a second embodiment of a display panel of the present application.
1 a first subpixel; 2 a second subpixel; 3 a third subpixel; s1, a first data line; s2, a second data line; s3, a third data line; a 10-pixel unit; cpp parasitic capacitance.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that the terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
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 present 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.
The root causes of gray-scale extrusion include: as shown in fig. 1, when the data voltage on S1 (data line) is changed by rising or falling, the data voltage on S2 (data line) is affected. As further shown in fig. 1 b, S1 is an actual variation waveform, S2' is an ideal output waveform, and S2 is an actual output waveform. The reason why the actual output waveform of S2 fluctuates is that the differential pressure across the parasitic capacitance Cpp does not change instantaneously, so that an increase in S1 results in an increase in S2 and a decrease in S1 results in a decrease in S2. In one row, the adjacent data lines S1 and S2 charge the storage capacitor Cst of the corresponding sub-pixel, and once the fluctuation caused by S1 on S2 is wrong, the storage capacitor Cst of the sub-pixel controlled by S2 will cause abnormal display of the sub-pixel controlled by S2.
For the RGB sub-pixels in the OLED, the threshold voltage of the R material is minimal (determined by the material), so that once the data line providing data to the R sub-pixel is affected by other data lines, the brightness change of R is more obvious, and the quality changes corresponding to the improvement of the product.
Referring to fig. 2, fig. 2 is a flow chart illustrating an embodiment of a data compensation method for sub-pixels according to the present application. As shown in fig. 2, the data compensation method of the sub-pixel includes:
step S11: a first influence value of a second sub-pixel of the first sub-pixel adjacent to one side of the first sub-pixel and a second influence value of a third sub-pixel of the first sub-pixel adjacent to the other side of the first sub-pixel are obtained.
Before the step, the method further comprises: and judging whether the second sub-pixel and the third sub-pixel are positioned on two opposite sides of the first sub-pixel, if so, executing the step S11, acquiring a first influence value and a second influence value, and if not, acquiring the influence value of the second sub-pixel or the third sub-pixel which is nearest to the first sub-pixel. Specifically, if the first sub-pixel is located at the outermost side, that is, the data line of the first sub-pixel is the first data line or the last data line, the data line of one of the second sub-pixel or the third sub-pixel adjacent to the first sub-pixel and the influence value of the data line on the first sub-pixel are obtained. And if the data line of the first sub-pixel is positioned in the middle of the data line of the second sub-pixel and the data line of the third sub-pixel, acquiring a first influence value and a second influence value.
Specifically, referring to fig. 3, fig. 3 is a schematic structural diagram of an embodiment of the pixel arrangement of the present application. As shown in fig. 3, the first data line S1 corresponding to the first subpixel 1 is located between the second data line S2 corresponding to the second subpixel 2 and the third data line S3 corresponding to the third subpixel 3. Wherein the first data line S1 of the first sub-pixel 1 is affected by the coupling action of S2 and S3.
The influence value of the second sub-pixel on the display gray scale of the first sub-pixel is a first influence value, and the influence value of the third sub-pixel on the display gray scale of the first sub-pixel is a second influence value.
In one embodiment, the first sub-pixel is a red sub-pixel, the second sub-pixel is one of a blue or green sub-pixel, and the third sub-pixel is the other of the blue or green sub-pixel. What is achieved in this embodiment is data compensation for the red sub-pixel, since the red sub-pixel is more susceptible to grayscale compression than the blue and green sub-pixels. In other embodiments, the first sub-pixel, the second sub-pixel, and the third sub-pixel may be one of R, G, B, respectively. Specifically, the first sub-pixel may be a blue sub-pixel, and the second sub-pixel and the third sub-pixel are two other sub-pixels, so that data compensation of the blue sub-pixel is realized; if the first sub-pixel is a green sub-pixel, and the second sub-pixel and the third sub-pixel are two other sub-pixels, the data compensation of the green sub-pixel is realized, which is not limited herein.
Step S12: and judging whether the first influence value and the second influence value are in the same direction or not.
If yes, step S13 is executed, and if no, step S14 is executed.
The first influence value and the second influence value are in the same direction, that is, the first influence value and the second influence value are both positive values or both negative values.
The first influence value refers to an influence value of the voltage of the data line of the second subpixel on the voltage of the data line of the first subpixel, that is, a voltage influence value. Similarly, the second influence value is also a voltage influence value.
The first influence value is positive, which means that the data line of the second sub-pixel generates a pull-up influence on the voltage of the data line of the first sub-pixel, and the first influence value is negative, which means that the data line of the second sub-pixel generates a pull-down influence on the voltage of the data line of the first sub-pixel. Similarly, the positive and negative of the second influence value also represent the pull-up influence and the pull-down influence.
The same direction means that the data line of the second sub-pixel and the data line of the third sub-pixel both have a pull-up effect or a pull-down effect on the data line of the first sub-pixel.
Step S13: a data compensation value for the first sub-pixel is determined based on one of the first influence value and the second influence value.
The data compensation value of the first sub-pixel refers to a compensation value for performing voltage compensation on the data line of the first sub-pixel.
In one embodiment, the step further comprises: comparing whether the absolute value of the first influence value is greater than the absolute value of the second influence value; if yes, determining a data compensation value of the first sub-pixel according to the first influence value; if not, determining the data compensation value of the first sub-pixel according to the second influence value. Specifically, the method comprises the following steps: if the first influence value and the second influence value are both positive values, further judging whether the first influence value is larger than the second influence value, if so, determining a data compensation value of the first sub-pixel according to the first influence value, and if not, determining the data compensation value of the first sub-pixel according to the second influence value. And when the first influence value and the second influence value are both negative, further judging whether the first influence value is larger than the second influence value. If not, determining the data compensation value of the first sub-pixel according to the first influence value, and if so, determining the data compensation value of the first sub-pixel according to the second influence value.
In this way, which of the second and third sub-pixels has a greater influence on the first sub-pixel is compared. Specifically, it is also possible to compare the voltage difference between the data line of the first subpixel and the data line of the second subpixel with the data line of the third subpixel, which is greater, and the effect caused by this is also greater.
For a specific R sub-pixel, two data lines are adjacent, the left data line will affect R, and the right data line S2 will also affect R, but overall, the voltage difference between who sees the pixel and S1 is larger, so the effect will be larger, and the phenomenon will follow.
Step S14: and determining a data compensation value of the first sub-pixel according to the superposition value of the first influence value and the second influence value.
The method comprises the following steps: the first influence value is a positive value and the second influence value is a negative value, and the first influence value is a negative value and the second influence value is a positive value.
The superposition value refers to an influence superposition value of the second sub-pixel and the third sub-pixel on the first sub-pixel, and is specifically calculated according to a sum value of the first influence value and the second influence value. Wherein the calculation includes a positive and negative of the first influence value and the second influence value. Specifically, if the first influence value is V1 and the second influence value is-V2, the superimposed value=v1+ (-V2).
In a specific embodiment, the superimposed value may be directly used as the data compensation value of the first sub-pixel. In other embodiments, the data compensation value of the first sub-pixel may be obtained by multiplying the superimposed value by the loss coefficient, which is not limited herein.
The steps S13 and S14 further include: acquiring an initial voltage of a data line of the first sub-pixel; and determining the actual data voltage output by the first sub-pixel by utilizing the sum of the data compensation value of the first sub-pixel and the initial voltage value of the data line in the first sub-pixel so as to achieve the aim of compensating the display gray scale of the first sub-pixel.
In a specific application scenario, if the first influence value is v1, the second influence value is v2, and v1> v2, the data compensation value of the first sub-pixel is v1, and if not, v2; if the first influence value is-v 1, the second influence value is-v 2, and-v 1< -v2, the data compensation value of the first sub-pixel is-v 1, and if not, the data compensation value of the first sub-pixel is-v 2; if the first influence value is v1 and the second influence value is-v 2, the data compensation value of the first sub-pixel is v1-v2. In other embodiments, the actual data compensation value may also be obtained by multiplying the data compensation value by a loss factor, which is not limited herein.
In one embodiment, step S11 further includes steps S111-S112, refer to fig. 4 specifically, and fig. 4 is a schematic flow chart of the first embodiment of step S11 in fig. 1.
As shown in fig. 4, includes:
step S111: the method comprises the steps of obtaining a first display gray level of a first sub-pixel, a second display gray level of a second sub-pixel and a third display gray level of a third sub-pixel under a picture to be displayed.
Step S112: the method comprises the steps of obtaining a first influence value when the first sub-pixel displays a first display gray scale and a second influence value when the second sub-pixel displays a second display gray scale, and obtaining a second influence value when the first sub-pixel displays a first display gray scale and a third sub-pixel displays a third display gray scale.
In the present embodiment, step S112 includes: inputting a first data voltage corresponding to a first display gray scale to a data line of the first sub-pixel through a driving circuit (driving IC), inputting a second data voltage corresponding to a second display gray scale to a data line of the second sub-pixel, and obtaining a change value of the first data voltage on the data line of the first sub-pixel through the driving circuit to obtain the first influence value; when the first influence value is obtained, the third sub-pixel does not display. And inputting a first data voltage corresponding to a first display gray scale to a data line of the first sub-pixel, inputting a third data voltage corresponding to a third display gray scale to a data line of the third sub-pixel, and obtaining the second influence value through a change value of the first data voltage on the data line of the first sub-pixel by a driving IC (integrated circuit), wherein the second sub-pixel does not display when the second influence value is obtained.
In this embodiment, the method specifically further includes: acquiring an initial data voltage input by a data line of a first sub-pixel when the first sub-pixel displays a first display gray scale; and obtaining the actual data voltage on the data line of the first sub-pixel when the first sub-pixel displays the first display gray scale, and calculating to obtain the influence value received on the data line of the first sub-pixel by subtracting the initial data voltage from the actual data voltage. In the present embodiment, the influence value is measured by measuring the voltage on the data line, and in other embodiments, the influence value may be obtained by measuring the display gray-scale luminance.
In the present embodiment, after step S14, further including: the first sub-pixel is driven based on the data compensation value so that the first sub-pixel displays a first display gray scale.
Wherein the first display gray scale, the second display gray scale and the third display gray scale all comprise 0-255 gray scales.
In another embodiment, step S11 further includes creating a table, referring specifically to fig. 5, and fig. 5 is a schematic flow chart of the second embodiment of step S11 in fig. 1. As shown in fig. 5, step S11 further includes:
step S121: and establishing a first table according to the influence value when the first sub-pixel displays the first gray scale and the second sub-pixel displays the second gray scale.
Wherein the first gray scale is 0-255 gray scales, and the second gray scale is 0-255 gray scales. The method specifically comprises the steps of obtaining each corresponding influence value when the first sub-pixel displays 0 gray scale and the second sub-pixel displays 0-255 gray scale; acquiring each corresponding influence value when the first sub-pixel displays 1 gray scale and the second sub-pixel displays 0-255 gray scales; and by analogy, obtaining each influence value in the first table.
Wherein, the first table is a two-dimensional table, and the first table is as follows:
the first sub-pixel is a red sub-pixel R, and the second sub-pixel is a green sub-pixel G. And are not limited thereto.
Step S122: and establishing a second table according to the influence value when the first sub-pixel displays the first gray scale and the third sub-pixel displays the third gray scale.
Wherein the first gray level comprises 0-255 gray levels, and the third gray level comprises 0-255 gray levels.
The second table is also a two-dimensional table, please refer to the above table, and detailed description is omitted herein.
Step S123: the method comprises the steps of obtaining a first display gray level of a first sub-pixel, a second display gray level of a second sub-pixel and a third display gray level of a third sub-pixel of a picture to be displayed.
Wherein, the first display gray scale, the second display gray scale and the third display gray scale are one specific display gray scale from 0 to 255 gray scales. In other words, the first gray scale includes a plurality of first display gray scales, the second gray scale includes a plurality of second display gray scales, and the third gray scale includes a plurality of third display gray scales. The number of which is 256.
Step S124: acquiring a first influence value from a first table according to the first display gray scale and the second display gray scale; and obtaining a second influence value from the second table according to the first display gray scale and the third display gray scale.
Compared with the first embodiment, the method can directly call the first influence value and the second influence value from the established first table and the established second table, and omits the step of repeated measurement.
In yet another embodiment, the compensation value may also be directly filled in the first and second tables. Specifically, if the influence value of the second sub-pixel on the first sub-pixel is a, filling-a in the first table, and directly adding-a in the calling process to obtain the compensated actual output voltage.
The beneficial effects of this embodiment are: the method comprises the steps of obtaining a first influence value of a second sub-pixel on a first sub-pixel and a second influence value of a third sub-pixel on the first sub-pixel, determining a data compensation value of the first sub-pixel according to the influence value, and compensating the data voltage of the first sub-pixel, so that the display gray level of the first sub-pixel can reach a preset display gray level, and the phenomenon that the display gray level of the first sub-pixel is extruded by the gray levels of other sub-pixels to cause poor picture display is avoided.
The application also provides a display panel, the display panel includes a plurality of pixel units that are the array arrangement, and every pixel unit includes first subpixel, second subpixel and third subpixel at least, and wherein, first subpixel is parallel and the adjacent setting with one of second subpixel and third subpixel at least. Specifically, referring to fig. 6 and 7, fig. 6 is a schematic structural diagram of a first embodiment of a display panel of the present application, and fig. 7 is a schematic structural diagram of a second embodiment of the display panel of the present application. As shown in fig. 6, the first subpixel 1 and the second subpixel 2 are disposed in parallel, that is, in the same row, and the third subpixel 3 is disposed in another row, which is not limited herein. As shown in fig. 7, the first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 are arranged in parallel, and the first sub-pixel 1 is located in the middle of the second sub-pixel 2 and the third sub-pixel 3. The first sub-pixel 1, the second sub-pixel 2, and the third sub-pixel 3 are not limited to the same pixel unit 10. For example, the first subpixel 1 may be a subpixel in a first pixel unit, and the second subpixel 2 adjacent thereto may be a subpixel derived from a second pixel unit.
Wherein the first sub-pixel, the second sub-pixel and the third sub-pixel are one of R, G, B. Of course, each pixel unit may further include a white sub-pixel, which is not limited herein.
In this embodiment, the display brightness of the first subpixel is ensured by adjusting the data voltage input to the data line of the first subpixel, where the method for compensating the data voltage of the first subpixel is adjusted by the data compensation method in the method embodiment described above.
The foregoing is only examples of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (10)
1. A data compensation method of a sub-pixel, wherein the sub-pixel includes a first sub-pixel, a second sub-pixel adjacent to one side of the first sub-pixel, and a third sub-pixel adjacent to the other side of the first sub-pixel, the data compensation method comprising:
acquiring a first influence value of the first sub-pixel by the second sub-pixel and a second influence value of the first sub-pixel by the third sub-pixel;
judging whether the first influence value and the second influence value are in the same direction or not; wherein the same direction includes that the first influence value and the second influence value are both positive values and the first influence value and the second influence value are both negative values;
if yes, determining a data compensation value of the first sub-pixel according to one of the first influence value and the second influence value;
if not, determining the data compensation value of the first sub-pixel according to the superposition value of the first influence value and the second influence value.
2. The method of data compensation of a sub-pixel according to claim 1, wherein the step of determining the data compensation value of the first sub-pixel according to one of the first influence value and the second influence value comprises:
if the first influence value and the second influence value are positive values, further judging whether the first influence value is larger than the second influence value or not;
if yes, determining a data compensation value of the first sub-pixel according to the first influence value;
if not, determining a data compensation value of the first sub-pixel according to the second influence value;
if the first influence value and the second influence value are negative, further judging whether the first influence value is larger than the second influence value or not;
if yes, determining a data compensation value of the first sub-pixel according to the second influence value;
if not, determining the data compensation value of the first sub-pixel according to the first influence value.
3. The method of data compensation of a sub-pixel according to claim 1, wherein the step of determining the data compensation value of the first sub-pixel from the superimposed value of the first influence value and the second influence value comprises:
calculating the sum value of the first influence value and the second influence value to obtain an influence superposition value of the second sub-pixel and the third sub-pixel on the first sub-pixel;
and determining a data compensation value of the first sub-pixel by using the influence superposition value.
4. The method of claim 1, wherein the determining the data compensation value of the first sub-pixel further comprises:
acquiring an initial data voltage input by a data line of the first sub-pixel when the first sub-pixel displays a set gray scale;
determining an output data voltage of a data line of the first sub-pixel using the initial data voltage and the data compensation value;
and driving the first sub-pixel to display the set gray scale by using the output data voltage.
5. The method of claim 1, wherein the step of obtaining a first influence value of the first sub-pixel from the second sub-pixel and a second influence value of the first sub-pixel from the third sub-pixel comprises:
acquiring a first display gray level of the first sub-pixel, a second display gray level of the second sub-pixel and a third display gray level of the third sub-pixel under a picture to be displayed;
acquiring a first influence value of the second display gray scale displayed by the second sub-pixel when the first sub-pixel displays the first display gray scale, and a second influence value of the third display gray scale displayed by the third sub-pixel when the first sub-pixel displays the first display gray scale.
6. The method of claim 5, wherein the step of obtaining a first influence value of the second display gray scale from the second sub-pixel when the first sub-pixel displays the first display gray scale and a second influence value of the third display gray scale from the third sub-pixel when the first sub-pixel displays the first display gray scale comprises:
inputting a first data voltage corresponding to the first display gray scale to a data line of the first sub-pixel through a driving circuit, inputting a second data voltage corresponding to the second display gray scale to a data line of the second sub-pixel, and obtaining a change value of the first data voltage on the data line of the first sub-pixel under the influence of the second data voltage to obtain a first influence value; the method comprises the steps of,
and inputting a first data voltage corresponding to the first display gray scale to the data line of the first sub-pixel through the driving circuit, inputting a third data voltage corresponding to the third display gray scale to the data line of the third sub-pixel, and obtaining a change value of the first data voltage on the data line of the first sub-pixel under the influence of the third data voltage to obtain the second influence value.
7. The method of claim 1, wherein the step of obtaining a first influence value of the first sub-pixel from the second sub-pixel and a second influence value of the first sub-pixel from the third sub-pixel is preceded by the steps of:
judging whether the second sub-pixel and the third sub-pixel are positioned on two opposite sides of the first sub-pixel or not;
if yes, the first influence value and the second influence value are obtained;
if not, determining the sub-pixel nearest to the first sub-pixel as the second sub-pixel or the third sub-pixel, and acquiring the corresponding first influence value or the second influence value.
8. The method of claim 1, wherein the step of obtaining a first influence value of the first sub-pixel by the second sub-pixel and a second influence value of the first sub-pixel by the third sub-pixel further comprises:
establishing a first table according to the influence value of the second sub-pixel to display the second gray scale when the first sub-pixel displays the first gray scale; wherein the first gray scale comprises 0-255 gray scales;
establishing a second table according to the influence value of the third sub-pixel to display a third gray scale when the first sub-pixel displays the first gray scale; wherein the second gray scale comprises 0-255 gray scales;
acquiring a first display gray level of the first sub-pixel, a second display gray level of the second sub-pixel and a third display gray level of the third sub-pixel of a picture to be displayed; wherein the first display gray scale, the second display gray scale and the third display gray scale are any one of 0-255 gray scales;
acquiring the first influence value from the first table according to the first display gray scale and the second display gray scale; and acquiring the second influence value from the second table according to the first display gray scale and the third display gray scale.
9. The method of claim 1, wherein the first sub-pixel is a red sub-pixel, the second sub-pixel is one of a blue sub-pixel and a green sub-pixel, and the third sub-pixel is the other of the blue sub-pixel and the green sub-pixel.
10. A display panel, characterized in that the display panel comprises pixel units arranged in an array, each pixel unit at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein the first sub-pixel is arranged in parallel and adjacent to at least one of the second sub-pixel and the third sub-pixel, and the data voltage of the first sub-pixel is adjusted according to the data compensation method of the sub-pixel according to any one of claims 1 to 9.
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