CN111145692B - Data restoration method and device for display panel - Google Patents
Data restoration method and device for display panel Download PDFInfo
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- CN111145692B CN111145692B CN202010074144.7A CN202010074144A CN111145692B CN 111145692 B CN111145692 B CN 111145692B CN 202010074144 A CN202010074144 A CN 202010074144A CN 111145692 B CN111145692 B CN 111145692B
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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]
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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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The invention discloses a data restoration method and device for a display panel. The display panel comprises a plane area and a bending area, and the method comprises the following steps: acquiring display data of the plane area and display data of the bending area; calculating a target display data reference value according to the display data of the partial column of the plane area; and obtaining a restoration coefficient of the bending area according to the target display data reference value, and restoring the display data of the bending area to make the display data reference value of the bending area the same as the target display data reference value. So that the display data of the bending zone is not affected by the bending action. At the moment, the compensation benchmark of the display data of the bending area is the same as the compensation benchmark of the display data of the plane area, and the display data of the bending area and the plane area are compensated on the basis, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is further improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a data restoration method and device for a display panel.
Background
In a conventional process of fabricating an OLED display panel, due to impure materials and production processes, non-uniformity exists in electrical parameters of different led units, which may cause non-uniformity of luminance of the OLED display panel during displaying. Such inhomogeneities are referred to in the industry as mura. An external compensation method (Demura) is generally used to solve the problem of non-uniformity in panel display.
When the Demura is compensated, the method mainly comprises two steps of data acquisition and compensation data generation. When data acquisition is carried out on the OLED display panel with the bend, the acquired brightness gradually becomes dark along the direction of the plane area pointing to the bend area in the bend area. When the inflection zone is directly compensated with such data, a problem of inaccurate compensation occurs.
Disclosure of Invention
The invention provides a data restoration method and a data restoration device for a display panel, which are used for realizing the compensation of the brightness of pixels in a bending area of the display panel, thereby improving the display uniformity of the bending area and a plane area of the display panel.
In a first aspect, an embodiment of the present invention provides a data recovery method for a display panel, where the display panel includes a planar area and a bending area, and the method includes:
acquiring the display data of the plane area and the display data of the bending area;
calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area;
and obtaining a restoration coefficient of the bending area according to the target display data reference value of the bending area, and restoring the display data of the bending area to enable the display data reference value of the bending area to be the same as the target display data reference value.
Optionally, calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area, including:
and calculating a target display data reference value of the bending area according to the display data of the part of the column of the plane area close to the bending area.
Optionally, calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area, including:
dividing the display data of the partial columns of the plane area into a plurality of row areas according to rows; the row area of each planar area comprises a plurality of rows of display data of the planar area;
calculating an average value of display data in a row area of each of the planar areas; and taking the average value as a target display data reference value of a bending area corresponding to the row area of the plane area.
Optionally, calculating an average value of display data in the row area of each of the planar areas includes:
calculating the average value of each column of display data in the row area of each plane area;
and calculating the average value of the display data along the row direction in the corresponding row area according to the average value of the display data of each column in the plane area, wherein the average value is used as the average value of the display data in the row area of each plane area.
Optionally, calculating a corresponding bending area target display data reference value according to the display data of the partial column of the plane area, further comprising:
dividing the display data of the bending area into a plurality of line areas according to lines; the number of rows of the row area of each bending area is equal to the number of rows of the row area of the plane area;
and calculating the average value of the display data of each column in the row area of each bending area.
Optionally, obtaining a repair coefficient of the bending region according to the target display data reference value, and repairing the display data of the bending region to make the display data reference value of the bending region the same as the target display data reference value, including:
calculating a repair coefficient corresponding to each column of display data in the row area of each bending area according to the target display data reference value and the average value of each column of display data in the row area of the bending area;
calculating a repair coefficient corresponding to each row of display data of each bending area according to the repair coefficient corresponding to each column of display data in the row area of each bending area;
and restoring the display data of the bending area according to the restoration coefficient corresponding to each row of display data of the bending area and the display data of the bending area, so that the reference value of the display data of the bending area is the same as the reference value of the target display data.
Optionally, calculating a repair coefficient corresponding to each row of display data of each bending region according to a repair coefficient corresponding to each column of display data in a row region of each bending region, including:
and calculating the repair coefficient corresponding to each row of display data in the row area of the bending area by adopting an interpolation method according to the repair coefficient corresponding to each column of display data in the row area of each bending area.
Optionally, the row area of each of the planar areas comprises an equal number of rows.
Optionally, after acquiring the display data of the planar area and the display data of the bending area, the method further includes:
and denoising the display data of the plane area and the display data of the bending area.
In a second aspect, an embodiment of the present invention further provides a data recovery apparatus for a display panel, where the display panel includes a planar area and a bending area, and the apparatus includes:
the display data acquisition module is used for acquiring display data of the plane area and display data of the bending area;
the target display data calculation module is used for calculating a target display data reference value according to the display data of the partial row of the plane area;
and the restoration module is used for obtaining the restoration coefficient of the bending area according to the target display data reference value and restoring the display data of the bending area so that the display data reference value of the bending area is the same as the target display data reference value.
According to the technical scheme of the embodiment of the invention, after the display data of the plane area and the display data of the bending area are obtained, the target display data reference value is calculated according to the display data of partial columns of the plane area, the restoration coefficient of the bending area is obtained according to the target display data reference value, and the display data of the bending area is restored, so that the display data reference value of the bending area is the same as the target display data reference value. So that the display data of the bending region is not affected by the bending action. In this case, the display data reference of the bending area is the same as the display data reference of the flat area, and it can be considered that the nonuniformity of the data representation is the difference that needs to be compensated by Demura. On the basis, the display data of the bending area and the plane area are compensated, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is improved.
Drawings
Fig. 1 is a flowchart of a data recovery method for a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating another data recovery method for a display panel according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating another data recovery method for a display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a data recovery apparatus of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a flowchart of a data recovery method for a display panel according to an embodiment of the present invention. As shown in fig. 1, the display panel includes a flat area and a bending area, and the method includes:
and S110, acquiring display data of the plane area and display data of the bending area.
Specifically, the display data may be actual light emission luminance of the display panel. The display brightness data of the display panel can be obtained by photographing through equipment such as an industrial camera. When the display data is acquired, the acquired display data comprises the display data of the plane area and the display data of the bending area; because the display panel corresponding to the plane area has no brightness change caused by the bending action, and the display panel corresponding to the bending area has brightness change caused by the bending action, the brightness change degree of the display data of the bending area caused by the bending action can be determined according to the display data of the plane area. Moreover, when the bending regions have different bending degrees, the different bending degrees cause different brightness variation degrees of the display data corresponding to the bending regions due to the bending effect, and therefore the acquired display data may include the display data of the display panel corresponding to the different bending degrees of the bending regions. Exemplarily, fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention. As shown in fig. 2, the display panel includes a planar area 110 and a bending area 120, and the bending area 120 is disposed on two sides of the planar area 110. The direction X in which the planar area 110 points to the bending area 120 may be set as a row direction. Along the row direction X, the bending degree of the bending region 120 is larger and larger, and the degree of change of the luminance of the display data in the bending region due to the bending action is larger and larger, so that the obtained display data may include the display data of different bending degree portions of the bending region 120.
And S120, calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area.
Specifically, the target display data reference value is basic data when the display panel performs Demura compensation, that is, when the display panel performs Demura compensation, compensation is performed on the basis of the target display data reference value to solve the problem of non-uniformity when the display panel displays. The display data of the plane area has no change of the light-emitting brightness caused by the bending action, so the display data of the plane area can be directly used as a target display data reference value of the plane area during the Demura compensation. And the change of the display data of the bending area caused by the bending action cannot be used as the reference value of the target display data. Therefore, the target display data reference value of the bending area can be calculated according to the display data of the plane area, and the accuracy of the basic data during the Demura compensation of the bending area is realized.
S130, obtaining a restoration coefficient of the bending area according to the target display data reference value of the bending area, and restoring the display data of the bending area to enable the display data reference value of the bending area to be the same as the target display data reference value.
Specifically, the display data reference value of the inflection region may be an average value of the display data of the portion of the inflection region. The display data for obtaining the reference value of the bending area and the display data for obtaining the reference value of the target display data may be the same in number of lines or may be the same in number. For example, when the display data is the light emission luminance, the display data reference value of the inflection region may be an average value of the light emission luminances of the pixels of the portion of the inflection region. Since the display data of different rows of the display panel are different, different rows have different target display data reference values. And comparing the target display data reference value of each row with the display data of the row corresponding to the bending area to obtain a restoration coefficient of the bending area, and restoring the display data reference value of the bending area to the target display data reference value according to the restoration coefficient so that the display data reference of the bending area is the same as the display data reference of the plane area. On the basis, the display data of the bending area and the plane area are compensated, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is improved.
Illustratively, the repair factor of a inflection region is the ratio of the target display data reference value to the display data of the corresponding inflection region, i.e., the ratio
Fi is a repair coefficient vector of the ith row, the number of columns of the repair coefficient vector is equal to that of the display data of the buckling area, LvTi is a reference value of the target display data of the ith row, and Ri is the display data of the ith row of the buckling area.
According to the technical scheme of the embodiment, after the display data of the plane area and the display data of the bending area are obtained, the target display data reference value is calculated according to the display data of partial columns of the plane area, the restoration coefficient of the bending area is obtained according to the target display data reference value, and the display data of the bending area is restored, so that the display data reference value of the bending area is the same as the target display data reference value. So that the display data of the bending region is not affected by the bending action. In this case, the compensation criterion of the display data in the bending area is the same as the compensation criterion of the display data in the flat area, and the non-uniformity of the data representation is considered to be the difference that the Demura needs to compensate. On the basis, the display data of the bending area and the plane area are compensated, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is improved.
Optionally, calculating a target display data reference value according to the display data of the partial column of the plane area includes:
and calculating a target display data reference value of the bending area according to the display data of the part of the column of the plane area close to the bending area.
Specifically, in the display panel, the light-emitting brightness of the adjacent area is similar, that is, the display data of the partial column of the planar area close to the bending area is similar to the display data of the bending area adjacent to the partial column of the planar area, so that the target display data reference value of the bending area can be calculated according to the display data of the partial column of the planar area close to the bending area, thereby reducing the influence of the bending action on the display data of the bending area.
Illustratively, table 1 shows display data of a partial column of the plane area and display data of the bending area provided by the embodiment of the present invention. As shown in table 1, the display panel exemplarily includes 30 rows of pixel units, and the display data is light emission luminance of the pixel units. The display data comprises 8 columns, wherein two columns of display data of the plane area are two columns of display data of the plane area close to the bending area, and 6 columns of display data of the bending area are display data of the bending area. The two rows of display data of the plane area are adjacent to the 6 rows of display data of the bending area, so that a target display data reference value is calculated according to the two rows of display data of the plane area, the target display data reference value can be closer to actual display data of the bending area, and the influence of the bending area on the display data of the bending area is better reduced.
TABLE 1
After acquiring the display data of the planar area and the display data of the bending area, the method further comprises the following steps:
and denoising the display data of the plane area and the display data of the bending area.
Specifically, after the display data is acquired, the display data may be filtered to remove the high frequency signal in the display data, so as to maintain the information of the mura-caused display brightness unevenness in the display data in the bending region. When filtering the display data, methods such as low-pass filtering, gaussian filtering, or mean filtering may be used.
On the basis of the above technical solutions, with continued reference to fig. 2, the bending region 120 includes a first bending region 121 and a second bending region 122; the first bending region 121 and the second bending region 122 are disposed at two sides of the planar region 110; the light emitting brightness of the first bending region 121 and the second bending region 122 at both sides will gradually decrease under the bending action. Since the display data of the first bending region 121 and the second bending region 122 are affected by the bending action, the compensation process of the display data of the bending regions can be exemplified by one of the bending regions.
The display data of the partial column of the flat area 110 is the display data of the partial column close to the bending area. Therefore, when the bending region 120 includes the first bending region 121, the display data of the partial column of the planar region 110 includes the display data close to the first bending region 121. When the bending region 120 includes the second bending region 121, the display data of the partial column of the planar region 110 includes the display data close to the second bending region 122. Illustratively, with continued reference to table 1, table 1 includes display data for the second inflection region 122 and two columns of display data for the planar region 110 proximate to the second inflection region 122.
Fig. 3 is a flowchart of another data recovery method for a display panel according to an embodiment of the present invention. As shown in fig. 3, the method includes:
s210, acquiring display data of the plane area and display data of the bending area.
S220, dividing the display data of partial columns of the plane area into a plurality of row areas according to rows; the row area of each planar area includes a plurality of rows of the display data of the planar area.
Specifically, after the display data of the flat area and the display data of the bending area are acquired, the display data may be divided into a plurality of line areas according to the number of lines. Illustratively, with continued reference to table 1, when the display panel includes 30 rows of pixel cells, two columns of display data of a planar area may be divided into 3 planar area row areas, each planar area row area including a plurality of rows of planar area display data. Illustratively, two columns of display data of the planar area are 30 × 2 matrices, and the 30 × 2 matrices are divided into 3 matrices of 10 × 2 rows by area division of the planar area. The row area of the first plane area is display data of two columns of the plane area with 1-10 rows, the row area of the second plane area is display data of two columns of the plane area with 11-20 rows, and the row area of the third plane area is display data of two columns of the plane area with 21-30 rows.
Preferably, the row area of each planar area includes the same number of rows, so that the display data of the row area of each planar area can be equal. When calculating the target display data reference value, the accuracy of the display data of the planar area in the row area of each planar area can be made relatively uniform.
And S230, calculating an average value of the display data in the row area of each plane area, and taking the average value as a target display data reference value of the bending area corresponding to the row area of the plane area.
Specifically, calculating an average value of display data in a row area of each planar area includes:
an average value of the display data for each column in the row area of each planar area is calculated.
Illustratively, table 2 shows data in the row area of the first plane area and an average value of display data in each column according to the embodiment of the present invention. As shown in table 2, the average value of the corresponding display data in the row area of the first plane area is calculated by column. Specifically, in each column of display data of the planar area, 1 to 10 lines are display data corresponding to the row area of the planar area, and the average value is an average value of the display data of 1 to 10 lines corresponding to the row area of the planar area.
And calculating the average value of the display data along the row direction in the corresponding row area according to the average value of the display data of each column in the plane area, wherein the average value is used as the average value of the display data in the row area of each plane area.
Specifically, with continued reference to table 2, after obtaining the average value of each column of display data in the planar area, the average value of the display data in a plurality of columns in the row area of the first planar area is obtained, and the average value of the display data in a partial column of the planar area is obtained. Illustratively, as shown in table 2, the row area of the first plane area includes two columns of display data, the average value of the display data of the first column is 2301.1, the average value of the display data of the second column is 2271.1, the average value of the display data of the first column and the average value of the display data of the second column are averaged again as the average value of the display data in the row area of each plane area, and the average value is used as the target display data reference value of the row area of the plane area.
It should be noted that the average value of the display data in the row area of the second plane area and the average value of the display data in the row area of the third plane area may be obtained through the process of obtaining the average value of the display data in the row area of the first plane area. Illustratively, table 3 shows data in the row area of the second flat area and an average value of display data in each column according to the embodiment of the present invention. As shown in table 3, the average value of the corresponding display data in the row area of the second plane area is calculated by column, and then the average value of the display data in the row area of the second plane area is obtained from the average value of the two columns of display data. Similarly, table 4 shows data in the row area of the third plane area and an average value of display data in each column according to the embodiment of the present invention. As shown in table 4, the average value of the corresponding display data in the row area of the third plane area is calculated by columns, and then the average value of the display data in the row area of the third plane area is obtained from the average value of the two columns of display data.
With continuing reference to tables 1-4, calculating a target display data reference value from the display data for the partial column of the flat area, further comprising:
dividing the display data of the bending area into a plurality of line areas according to lines; the number of rows in the row area of each bending area is equal to the number of rows in the row area of the plane area.
Specifically, with continued reference to tables 1-4, the display data for the inflection zones is divided according to the row area of the planar zone, and likewise into the row area of 3 inflection zones. Illustratively, two columns of the inflection zones display a 30 × 6 matrix, and the 30 × 6 matrix is divided into 310 × 6 matrices by dividing the row area of the inflection zones. The row area of the first bending area is display data of 6 columns of the bending areas with 1-10 rows, the row area of the second bending area is display data of 6 columns of the bending areas with 11-20 rows, and the row area of the third bending area is display data of 6 columns of the bending areas with 21-30 rows. The rows of the display data of the row area of each bending area correspond to the rows of the display data of the row area of each plane area one to one.
The average of the display data for each column in the row area of each inflection zone is calculated.
Specifically, with continued reference to tables 2-4, an average calculation is performed for each column of display data in the row area of each inflection zone. The row area of each bending area comprises an average value of display data of each column of the bending area. Illustratively, table 5 is an average value of a target display data reference value and each column of display data in a row area of a bending area according to an embodiment of the present invention. As shown in table 5, the row area of each planar area includes the target display data reference value, so that the row data of the planar area in table 5 is the target display data reference value corresponding to the row area of one planar area. The inflection zones comprise 6 columns of display data, so the row area of each inflection zone comprises an average of 6 display data. And the bending region includes 3 row regions, so that the data in one row of the bending region in table 5 is an average value of 6 display data corresponding to the row region of one bending region. At this time, the display data reference value of each row area of the bending area may be a value obtained by calculating an average value of display data of 10 rows and 6 columns in each row area along the column direction and then calculating the average value along the row direction.
TABLE 2
TABLE 3
TABLE 4
TABLE 5
S240, obtaining a restoration coefficient of the bending area according to the target display data reference value, and restoring the display data of the bending area to enable the display data reference value of the bending area to be the same as the target display data reference value.
Fig. 4 is a flowchart of another data recovery method for a display panel according to an embodiment of the present invention. As shown in fig. 4, the method includes:
and S310, acquiring display data of the plane area and display data of the bending area.
And S320, calculating a target display data reference value according to the display data of the partial column of the plane area.
S330, calculating a repair coefficient corresponding to each column of display data in the row area of each bending area according to the target display data reference value and the average value of each column of display data in the row area of each bending area.
Illustratively, with continued reference to table 5, after obtaining the target display data reference value of the planar area and the average value of the display data of the inflection area, the repair coefficient of each column of display data in the row area of the inflection area may be calculated according to the two. For example, table 6 is a repair coefficient corresponding to each column of display data in the row area of the inflection region calculated from the target display data reference value of the plane area and the average value of each column of display data in the row area of the inflection region in table 5. As shown in table 6, the repair factor 1.020079 corresponding to the first column of display data in the first row area of the inflection region is the quotient of the target display data reference value 2286.097 of the first row area of the planar area and the average value 2241.097 of the first column of display data in the first row area of the inflection region in table 5. Similarly, the repair factor 1.03392 corresponding to the second column of display data in the first row area of the inflection region is the quotient of the target display data reference value 2286.097 of the first row area of the planar area and the average value 2211.097 of the second column of display data in the first row area of the inflection region in table 5. And by analogy, the restoration coefficient corresponding to each column of display data in the row area of each bending area is calculated according to the target display data reference value and the average value of the bending area display data.
TABLE 6
S340, calculating a repair coefficient corresponding to each row of display data in each bending area according to the repair coefficient corresponding to each column of display data in the row area of each bending area.
For example, calculating the repair coefficient corresponding to each row of display data of each bending area according to the repair coefficient corresponding to each column of display data in the row area of each bending area may include:
and calculating the repair coefficient corresponding to each row of display data in each bending area by adopting an interpolation method according to the repair coefficient corresponding to each column of display data in the row area of each bending area.
For example, after the repair coefficient corresponding to each column of display data in the row area of each bending area is obtained, the repair coefficient corresponding to each row of display data in the row area of each bending area is calculated by an interpolation method, so that the repair coefficients corresponding to all the row of display data in the bending area are obtained. Table 7 shows the repair coefficients corresponding to the data for all rows in the inflection zones. As shown in table 7, the row area of each bending region includes 10 rows of display data, and therefore, after the row area of 3 bending regions calculates the repair coefficient corresponding to each row of display data by interpolation, there are 30 rows of repair coefficients corresponding to the display data in total.
TABLE 7
And S350, restoring the display data of the bending area according to the restoration coefficient corresponding to each row of display data of the bending area and the display data of the bending area, so that the reference value of the display data of the bending area is the same as the reference value of the target display data.
Specifically, after data repair, data of each row is LvTi — Fi Ri. And the LvTi is the repaired data of the ith row, the Fi is the repair coefficient vector of the ith row, and the Ri is the display data of the ith row of the bending area. At this time, the display data reference of the bending area is the same as that of the flat area. On the basis, the display data of the bending area and the plane area are compensated, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is improved.
The embodiment of the invention also provides a data recovery device of the display panel, and the display panel comprises a plane area and a bending area. Fig. 5 is a schematic structural diagram of a data recovery apparatus of a display panel according to an embodiment of the present invention. As shown in fig. 5, the data restoring apparatus includes:
and the display data acquisition module 10 is used for acquiring the display data of the plane area and the display data of the bending area.
And a target display data calculation module 20, configured to calculate a target display data reference value according to the display data of the partial column of the plane area.
And the repairing module 30 is configured to obtain a repairing coefficient of the bending region according to the target display data reference value, and repair the display data of the bending region so that the display data reference value of the bending region is the same as the target display data reference value.
According to the technical scheme, the display data of the plane area and the display data of the bending area are obtained through the display data obtaining module, then the target display data calculating module calculates the reference value of the display data of the bending area according to the display data of partial columns of the plane area, finally the restoration coefficient of the bending area is obtained through the restoration module according to the reference value of the display data of the bending area, the display data of the bending area is restored, the reference value of the display data of the bending area is the same as the reference value of the target display data, and therefore the display data of the bending area can be free from the influence of bending action. In this case, the compensation criterion of the display data in the bending area is the same as the compensation criterion of the display data in the flat area, and the non-uniformity of the data representation is considered to be the difference that the Demura needs to compensate. On the basis, the display data of the bending area and the plane area are compensated, so that the influence of bending action on the Demura compensation of the bending area is avoided, the accuracy of the Demura compensation of the bending area is improved, and the display uniformity of the display panel is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A method for repairing data of a display panel, wherein the display panel comprises a planar area and a bending area, the method comprising:
acquiring display data of the plane area and display data of the bending area;
calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area;
obtaining a restoration coefficient of the bending area according to the target display data reference value of the bending area, and restoring the display data of the bending area to make the display data reference value of the bending area the same as the target display data reference value;
calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area, wherein the method comprises the following steps:
calculating a target display data reference value of the bending area according to the display data of the part of the column of the plane area close to the bending area;
calculating a target display data reference value of the bending area according to the display data of the partial column of the plane area, wherein the method comprises the following steps:
dividing the display data of the partial columns of the plane area into a plurality of row areas according to rows; the row area of each planar area comprises a plurality of rows of display data of the planar area;
calculating an average value of display data in a row area of each of the planar areas; and taking the average value as a target display data reference value of a bending area corresponding to the row area of the plane area.
2. The method of claim 1, wherein calculating an average of display data in the row area of each of the planar areas comprises:
calculating the average value of each column of display data in the row area of each plane area;
and calculating the average value of the display data along the row direction in the corresponding row area according to the average value of the display data of each column, wherein the average value is used as the average value of the display data in the row area of each plane area.
3. The method of claim 2, wherein calculating the target display data reference value for the corresponding inflection zone based on the display data for the partial column of planar zones, further comprises:
dividing the display data of the bending area into a plurality of line areas according to lines; the number of rows of the row area of each bending area is equal to the number of rows of the row area of the plane area;
and calculating the average value of the display data of each column in the row area of each bending area.
4. The method according to claim 3, wherein obtaining the repair coefficient of the bending area according to the target display data reference value, and repairing the display data of the bending area to make the display data reference value of the bending area the same as the target display data reference value comprises:
calculating a repair coefficient corresponding to each column of display data in the row area of each bending area according to the target display data reference value and the average value of each column of display data in the row area of the bending area;
calculating a repair coefficient corresponding to each row of display data of each bending area according to the repair coefficient corresponding to each column of display data in the row area of each bending area;
and restoring the display data of the bending area according to the restoration coefficient corresponding to each row of display data of the bending area and the display data of the bending area, so that the reference value of the display data of the bending area is the same as the reference value of the target display data.
5. The method according to claim 4, wherein calculating the repair coefficient corresponding to each row of display data of the bending area according to the repair coefficient corresponding to each column of display data in the row area of each bending area comprises:
and calculating the repair coefficient corresponding to each row of display data in the row area of the bending area by adopting an interpolation method according to the repair coefficient corresponding to each column of display data in the row area of each bending area.
6. The method of claim 1, wherein the row area of each of the planar zones comprises an equal number of rows.
7. The method of claim 1, further comprising, after acquiring the display data of the flat area and the display data of the bend area:
and denoising the display data of the plane area and the display data of the bending area.
8. A data recovery apparatus of a display panel, the display panel including a flat area and a bending area, the apparatus comprising:
the display data acquisition module is used for acquiring display data of the plane area and display data of the bending area;
the target display data calculation module is used for calculating a target display data reference value according to the display data of the partial row of the plane area;
the target display data calculation module is further used for calculating a target display data reference value of the bending area according to the display data of the part of the column of the plane area close to the bending area;
the target display data calculation module is also used for dividing the display data of the partial columns of the plane area into a plurality of row areas according to rows; the row area of each planar area comprises a plurality of rows of display data of the planar area;
calculating an average value of display data in a row area of each of the planar areas; taking the average value as a target display data reference value of a bending area corresponding to the row area of the plane area;
and the restoration module is used for obtaining the restoration coefficient of the bending area according to the target display data reference value and restoring the display data of the bending area so that the display data reference value of the bending area is the same as the target display data reference value.
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