CN112562585A - Brightness compensation method and device of display panel - Google Patents
Brightness compensation method and device of display panel Download PDFInfo
- Publication number
- CN112562585A CN112562585A CN202011448068.8A CN202011448068A CN112562585A CN 112562585 A CN112562585 A CN 112562585A CN 202011448068 A CN202011448068 A CN 202011448068A CN 112562585 A CN112562585 A CN 112562585A
- Authority
- CN
- China
- Prior art keywords
- display
- display area
- brightness
- gamma
- register
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the invention discloses a brightness compensation method and a device of a display panel, wherein the display panel comprises a first display area, a second display area and a non-display area; along the row direction, the first display area is positioned at two sides of the non-display area; the brightness compensation method comprises the following steps: acquiring the display brightness of a first display area and the display brightness of a second display area under the same gamma register parameter; adjusting the display brightness of the first display area to the display brightness of the second display area, and determining a compensation coefficient of a gamma register parameter of the first display area; and correcting the display brightness of the first display area according to the compensation coefficient. The technical scheme provided by the embodiment of the invention improves the consistency of the first display area and the second display area, improves the problem of layering of the special-shaped display area of the display panel, and can replace the prior art for solving the layering phenomenon of the special-shaped display area by adopting a Demura compensation scheme, thereby reducing the production cost of products and improving the production efficiency of the products.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a brightness compensation method and device of a display panel.
Background
With the market demand, the display area of an Organic Light Emitting Diode (OLED) display panel can be provided with a slot, a blind hole, a transparent display, and the like, but the problem of special-shaped display in the display area is also caused.
At present, the demixing phenomenon of a special-shaped display area is solved by adopting a Demura compensation scheme, but the problems of high production cost and low production efficiency exist.
Disclosure of Invention
The embodiment of the invention provides a brightness compensation method and device of a display panel, which are used for reducing the production cost of products and improving the production efficiency of the products.
In a first aspect, an embodiment of the present invention provides a brightness compensation method for a display panel, where the display panel includes a first display area, a second display area, and a non-display area; the first display area is positioned on two sides of the non-display area along the row direction; the brightness compensation method includes:
acquiring the display brightness of a first display area and the display brightness of a second display area under the same gamma register parameter;
adjusting the display brightness of the first display area to be equal to the display brightness of the second display area, and determining a compensation coefficient of a gamma register parameter of the first display area;
and correcting the display brightness of the first display area according to the compensation coefficient.
Optionally, the gamma register parameter includes a register value corresponding to a gray scale voltage; then said adjusting the display brightness of said first display region to be equal to the display brightness of said second display region, and determining the compensation coefficient of the gamma register parameter of said first display region, includes:
adjusting a register value corresponding to the gray scale voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the register value corresponding to the current gray scale voltage of the first display area;
and calculating the compensation coefficient of the gamma register parameter of the first display area according to the register value corresponding to the gray scale voltage of the first display area before and after adjustment.
Optionally, the calculating a compensation coefficient of a gamma register parameter of the first display area according to register values corresponding to gray scale voltages of the first display area before and after adjustment includes:
determining the compensation coefficient of the gamma register parameter according to the ratio of the register values corresponding to the gray scale voltages of the first display area before and after adjustment,
or determining the compensation coefficient of the gamma register parameter according to the difference value of the register values corresponding to the gray scale voltages of the first display area before and after adjustment.
Optionally, the gamma register parameter includes a gamma reference voltage; then said adjusting the display brightness of said first display region to be equal to the display brightness of said second display region, and determining the compensation coefficient of the gamma register parameter of said first display region, includes:
adjusting the gamma reference voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the current gamma reference voltage of the first display area;
and calculating the compensation coefficient of the gamma register parameter of the first display area according to the gamma reference voltage of the first display area before and after adjustment.
Optionally, the calculating a compensation coefficient of a gamma register parameter of the first display area according to the gamma reference voltages of the first display area before and after the adjustment includes:
determining a compensation coefficient of the gamma register parameter according to a ratio of gamma reference voltages of the first display region before and after adjustment,
or determining a compensation coefficient of the gamma register parameter according to a difference value of gamma reference voltages of the first display area before and after adjustment; wherein the gamma reference voltage includes a maximum gamma voltage value or a minimum gamma voltage value.
Optionally, before the obtaining of the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter, the method further includes:
determining a line range of the first display area.
Optionally, before the obtaining of the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter, the method further includes:
adjusting a gamma curve of the display panel according to the display brightness of the second display area;
and determining gamma register values of different gray scales on the gamma curve.
Optionally, adjusting the display brightness of the first display area to be equal to the display brightness of the second display area includes:
and sequentially adjusting the display brightness of the first display area to be equal to the display brightness of the second display area under different gray scales.
Optionally, the modifying the display brightness of the special-shaped display first display area according to the compensation parameter brightness compensation parameter includes:
burning the compensation coefficient to a gamma register of the display panel;
compensating the gamma register parameter of the first display region by the compensation coefficient,
and correcting the display brightness of the first display area according to the compensated gamma register parameters.
In a second aspect, an embodiment of the present invention provides a brightness compensation apparatus for a display panel, where the display panel includes a first display area, a second display area, and a non-display area; the first display area is positioned on two sides of the non-display area along the row direction; the brightness compensation device includes:
the acquisition module is used for acquiring the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter;
the compensation parameter determining module is used for adjusting the display brightness of the first display area to be equal to the display brightness of the second display area and determining a compensation coefficient of a gamma register parameter of the first display area;
and the driving module is used for correcting the display brightness of the first display area according to the compensation coefficient.
The technical scheme provided by the embodiment of the invention obtains the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter, and adjusts the display brightness of the first display area to be equal to the display brightness of the second display area; according to the gamma register parameters corresponding to the brightness of the first display area before and after adjustment, the compensation coefficient of the gamma register parameters of the first display area is determined, the gamma register parameters of the first display area can be compensated according to the compensation coefficient, correction of the display brightness of the first display area is achieved, the consistency of the first display area and the second display area is improved, the problem that the display panel is layered in a special-shaped display area is solved, the problem that the display panel is layered in the special-shaped display area can be replaced by the layered phenomenon of the special-shaped display area which is solved by adopting a Demura compensation scheme in the prior art, the production cost of products is reduced, and the production efficiency of the products is improved.
Drawings
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;
FIG. 2 is a flowchart illustrating a method for compensating brightness of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a brightness compensation method for a display panel according to another embodiment of the present invention;
FIG. 5 is a flowchart illustrating a brightness compensation method for a display panel according to another embodiment of the present invention;
FIG. 6 is a flowchart illustrating a brightness compensation method for a display panel according to another embodiment of the present invention;
fig. 7 is a block diagram of a luminance compensation 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.
At present, the OLED display panel has the characteristic of tending to full screen display. Fig. 1 is a schematic structural diagram of a display panel provided in the prior art, and referring to fig. 1, in order to improve the screen ratio, a front-facing camera or a functional component C such as fingerprint recognition is disposed in a display area of the display panel, so that the display area includes a special-shaped display area B disposed on both sides of a position where the functional component C such as a slot, a blind hole, or a transparent display is disposed. However, due to the existence of the open groove, the blind hole or the transparent display, the pixel arrangement of the special-shaped display area B is different from the pixel arrangement of the normal display area a, that is, the driving load of the special-shaped display area B is different from that of the normal display area a along the row direction X, so that the luminance of the special-shaped display area B is different from that of the normal display area a under the same driving voltage, and thus the display panel is layered. In the prior art, a Demura compensation scheme is adopted, a Charge-coupled Device (CCD) is used to photograph the special-shaped display area B, and the special-shaped display area B is corrected. However, in the technical scheme, the drive chip is required to support the Demura function, and a plug-in memory (such as a flash memory) is required to store compensation data on a Printed Circuit (FPC) board of the display panel, thereby increasing the cost of the drive chip and the memory. In addition, production line operation sites are added, so that the production efficiency of the display panel is influenced.
The embodiment of the invention provides a brightness compensation method of a display panel, wherein the display panel comprises a first display area, a second display area and a non-display area; along the row direction, the first display area is located at two sides of the non-display area, fig. 2 is a flowchart of a luminance compensation method of a display panel according to an embodiment of the present invention, and with reference to fig. 2, the method includes:
s110, obtaining the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter.
Specifically, fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and referring to fig. 3, the display panel includes a first display area 10, a second display area 20 and a non-display area 30, where the second display area 20 is the above-mentioned normal display area, the non-display area 30 is an area where the above-mentioned open groove, blind hole or transparent display is disposed, and the first display area 10 is the above-mentioned special-shaped display area, and therefore, along the row direction X, the first display area 10 is located on two sides of the non-display area 30. And for the display areas with the same display pixel arrangement, the display brightness is the same under the same gamma register parameter. Because the first display area 10 has a structure of a slot, a blind hole, or a transparent display in the row range, the number of pixels connected by the scan lines in the first display area 10 is different from the number of pixels connected by the scan lines in the second display area 20, that is, the load of the scan lines in the first display area 10 is different from the load of the scan lines in the second display area 20. Therefore, the first display region 10 and the second display region 20 display different brightness at the same gamma voltage. Along the row direction, the larger the proportion of the open groove, the blind hole or the transparent display is, the larger the difference of the number of pixels of the first display area 10 and the second display area 20 is, and the larger the difference of the display brightness of the first display area 10 and the second display area 20 is. The small-size probe color analyzer is used for detecting the display brightness of the first display area 10 and the display brightness of the second display area 20 under the same gamma register parameter, so that the specific display brightness value of the first display area 10 and the specific display brightness value of the second display area 20 under the same gamma register parameter can be obtained, and the specific difference between the display brightness of the first display area 10 and the display brightness of the second display area 20 can be determined.
S120, adjusting the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the compensation coefficient of the gamma register parameter of the first display area.
Specifically, the display brightness of the display area is determined by the gamma register parameters of the area. After the display brightness of the first display area 10 and the display brightness of the second display area 20 are detected by using the small-sized probe color analyzer, the gamma register parameters of the gamma register are obtained. The display brightness of the first display area 10 is equal to the display brightness of the second display area 20 by adjusting the gamma register parameters of the first display area 10; and determining the gamma register parameters of the first display area 10 after the brightness is adjusted, and calculating the compensation coefficient of the gamma register parameters of the first display area 10 according to the gamma register parameters of the first display area 10 before and after the brightness is adjusted. That is, regarding the brightness displayed in the second display area 20, i.e. the normal display area, as the brightness of the first display area 10 is different from the brightness displayed in the second display area 20 under the same gamma register parameter, the gamma register parameter of the first display area 10 needs to be compensated to correct the display brightness of the first display area 10.
And S130, correcting the display brightness of the first display area according to the compensation coefficient.
Specifically, after the compensation coefficient of the gamma register parameter of the first display area 10 is determined, the gamma register parameter of the first display area 10 is compensated according to the compensation coefficient, at this time, under the compensated gamma register parameter, the display brightness of the first display area 10 can be corrected, the consistency of the display brightness of the first display area 10 and the display brightness of the second display area 20 is improved, the layering phenomenon of the display panel is improved, the layering phenomenon of the special-shaped display area is solved by adopting a Demura compensation scheme in the prior art can be replaced, the production cost of the product is reduced, and the production efficiency of the product is improved.
It should be noted that, under the same display brightness, the compensation coefficients of the gamma register parameters corresponding to different rows of pixels in the first display area 10 may be different. If the non-display area is in the shape of a parallelogram, and at least one pair of opposite sides in the parallelogram is parallel to the row direction of the display panel, namely the scanning line direction, the number of pixels in the first display area is the same, namely the load on the row scanning line of the first display area is the same, and the compensation coefficients of the gamma register parameters corresponding to the pixels in different rows in the first display area are the same. The non-display area is exemplarily shown as a rectangle in fig. 3. If the shape of the non-display area is a circle, a triangle or other irregular figure which makes the loads on at least two rows of scanning lines in the first display area different, the compensation coefficients of the gamma register parameters of the first display area at least comprise two types.
The technical scheme provided by the embodiment of the invention obtains the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter, and adjusts the display brightness of the first display area to be equal to the display brightness of the second display area; according to the gamma register parameters corresponding to the brightness of the first display area before and after adjustment, the compensation coefficient of the gamma register parameters of the first display area is determined, the gamma register parameters of the first display area can be compensated according to the compensation coefficient, correction of the display brightness of the first display area is achieved, the consistency of the first display area and the second display area is improved, the problem that the display panel is layered in a special-shaped display area is solved, the problem that the display panel is layered in the special-shaped display area can be replaced by the layered phenomenon of the special-shaped display area which is solved by adopting a Demura compensation scheme in the prior art, the production cost of products is reduced, and the production efficiency of the products is improved.
Fig. 4 is a flowchart of another brightness compensation method for a display panel according to an embodiment of the present invention, and referring to fig. 4, the method includes:
s210, adjusting a register value corresponding to the gray scale voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the register value corresponding to the current gray scale voltage of the first display area.
Specifically, the gamma register parameter includes a register value corresponding to the gray scale voltage, and at this time, the gamma reference voltages of the first display area 10 and the second display area 20 are set to be the same, and the gamma reference voltages include a maximum gamma voltage VGMP and a minimum gamma voltage VGSP. That is, the maximum value VGMP and the minimum value VGSP of the gamma voltage in the first display region 10 are the same as the maximum value VGMP and the minimum value VGSP of the gamma voltage in the second display region 20. The gray scale voltage is a driving voltage for driving the display panel to display, and the display panel has different display brightness due to different gray scale voltages. For example, 255 gradations may be associated with the display luminance of the display panel when the display luminance of the display panel at the brightest state and the display luminance of the display panel at the darkest state are divided into 255 parts. Each gray scale corresponds to a gray scale voltage. The gray scale voltage is determined according to the register value corresponding to the gray scale voltage, the maximum gamma voltage value VGMP and the minimum gamma voltage value VGSP. The maximum gamma voltage value VGMP and the minimum gamma voltage value VGSP of the first display area 10 and the second display area 20 are set to be the same. Only the register value corresponding to the gray scale voltage is changed correspondingly. Adjusting the register value corresponding to the gray scale voltage of the first display area 10 to make the display brightness of the first display area 10 equal to the display brightness of the second display area 20, and determining the register value corresponding to the adjusted current gray scale voltage of the first display area 10.
S220, calculating a compensation coefficient of a gamma register parameter of the first display area according to register values corresponding to the gray scale voltages of the first display area before and after adjustment.
Specifically, under the same gray scale voltage, the first display region 10 and the second display region 20 have different display brightness due to different loads. The register value corresponding to the gray scale voltage can be obtained after the small-sized probe color analyzer is used for detecting the display brightness of the first display area 10 and the display brightness of the second display area 20 under the register value corresponding to the same gray scale voltage. The maximum gamma voltage value VGMP and the minimum gamma voltage value VGSP of the first display area 10 and the second display area 20 are set to be the same. The display brightness of the first display area 10 is made equal to the display brightness of the second display area 20 by adjusting the register value corresponding to the gray scale voltage of the first display area 10, the register value corresponding to the gray scale voltage of the first display area 10 after the brightness adjustment is determined, and the compensation coefficient of the gamma register parameter of the first display area 10 is calculated according to the register values corresponding to the gray scale voltages of the first display area 10 before and after the adjustment. The compensation coefficient of the gamma register parameter is the compensation coefficient of the register value corresponding to the gray scale voltage.
Optionally, calculating a compensation coefficient of a gamma register parameter of the first display area 10 according to register values corresponding to gray-scale voltages of the first display area 10 before and after adjustment includes:
determining the compensation coefficient of gamma register parameters according to the ratio of the register values corresponding to the gray scale voltages of the first display area 10 before and after adjustment,
or determining the compensation coefficient of the gamma register parameter according to the difference value of the register values corresponding to the gray scale voltages of the first display area 10 before and after adjustment.
Specifically, the ratio between the register value corresponding to the gray scale voltage of the first display area 10 before adjustment and the register value corresponding to the gray scale voltage of the first display area 10 after adjustment may be calculated to obtain the compensation coefficient of the gamma register parameter of the first display area 10. The ratio here may be obtained from the former to the latter, or from the latter to the former. If the compensation coefficient of the gamma register parameter is a ratio obtained by comparing the former with the latter, when the register value corresponding to the gray scale voltage of the first display area 10 is compensated according to the compensation coefficient, the register value corresponding to the gray scale voltage of the first display area 10 is divided by the compensation coefficient to obtain the register value corresponding to the compensated gray scale voltage, and at this time, the gray scale voltage determined according to the register value corresponding to the compensated gray scale voltage can drive the display brightness of the first display area 10 of the display panel to be the same as the display brightness of the second display area 20. Similarly, if the compensation coefficient of the gamma register parameter is a ratio obtained by comparing the latter with the former, when the register value corresponding to the gray scale voltage of the first display area 10 is compensated according to the compensation coefficient, the register value corresponding to the gray scale voltage of the first display area 10 is multiplied by the compensation coefficient to obtain the register value corresponding to the compensated gray scale voltage, and at this time, the gray scale voltage determined according to the register value corresponding to the compensated gray scale voltage can drive the display brightness of the first display area 10 of the display panel to be the same as the display brightness of the second display area 20.
The difference between the register value corresponding to the gray scale voltage of the first display area 10 before adjustment and the register value corresponding to the gray scale voltage of the first display area 10 after adjustment can be calculated to obtain the compensation coefficient of the gamma register parameter of the first display area 10. The difference here may be obtained by subtracting the former from the latter, or may be obtained by subtracting the former from the latter. Similar to the above description, the compensation coefficient of the gamma register parameter is determined according to the ratio of the register values corresponding to the gray-scale voltages of the first display region 10 before and after the adjustment. The ratio is replaced by the difference here. If the compensation coefficient of the gamma register parameter is a difference value obtained by subtracting the former from the latter, when the register value corresponding to the gray scale voltage of the first display area 10 is compensated according to the compensation coefficient, the register value corresponding to the compensated gray scale voltage is obtained by adjusting the register value corresponding to the gray scale voltage of the first display area 10 and subtracting the compensation coefficient; if the compensation coefficient of the gamma register parameter is a difference obtained by subtracting the former from the latter, when the register value corresponding to the gray scale voltage of the first display area 10 is compensated according to the compensation coefficient, the register value corresponding to the compensated gray scale voltage is obtained by adjusting the register value corresponding to the gray scale voltage of the first display area 10 before and adding the compensation coefficient.
And S230, correcting the display brightness of the first display area according to the compensation coefficient.
It should be noted that the pixels of the display panel may include red pixels, green pixels, and blue pixels. Under the same gray scale, each color pixel can be corresponding to a gray scale voltage, namely, the gamma register is respectively corresponding to a register value of a red pixel, a register value of a green pixel and a register value of a blue pixel. Therefore, the compensation coefficient for each color can be calculated by the above method, so that the display brightness of the first display area 10 can be further corrected, the consistency between the display brightness of the first display area 10 and the display brightness of the second display area 20 is improved, and the layering phenomenon of the display panel is improved.
Fig. 5 is a flowchart of another brightness compensation method for a display panel according to an embodiment of the present invention, and referring to fig. 5, the method includes:
s310, adjusting the gamma reference voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the current gamma reference voltage of the first display area.
Specifically, the gamma register parameters include a gamma reference voltage, and the register values corresponding to the gray scale voltages of the first display area 10 and the second display area 20 are set to be the same. That is, the first display area 10 and the second display area 20 share the register value corresponding to the gray scale voltage. The gamma reference voltages include a maximum gamma voltage value VGMP and a minimum gamma voltage value VGSP. The gray scale voltage is determined according to the register value corresponding to the gray scale voltage, the maximum gamma voltage value VGMP and the minimum gamma voltage value VGSP. Setting one of the maximum value VGMP and the minimum value VGSP of the gamma voltages of the first display area 10 and the second display area 20 to be the same, and the other value to be adjustable; and setting the register values corresponding to the gray scale voltages of the first display area 10 and the second display area 20 to be the same. The display luminance of the first display region 10 is made equal to the display luminance of the second display region 20 only by adjusting one of the gamma voltage maximum value VGMP and the gamma voltage minimum value VGSP in the gamma reference voltage of the first display region 10. For example, if the maximum gamma voltage VGMP is set to be adjustable, the maximum gamma voltage VGMP of the first display area 10 is adjusted to make the display brightness of the first display area 10 equal to the display brightness of the second display area 20. And obtains the current maximum value VGMP of the gamma voltage of the adjusted first display area 10.
S320, calculating a compensation coefficient of the gamma register parameter of the first display area according to the gamma reference voltage of the first display area before and after adjustment.
Specifically, the register values corresponding to the gray scale voltages of the first display area 10 and the second display area 20 are set to be the same. The gamma reference voltage of the first display area 10 is adjusted to make the display brightness of the first display area 10 equal to the display brightness of the second display area 20, the gamma reference voltage of the first display area 10 after the brightness adjustment is determined, and the compensation coefficient of the gamma register parameter of the first display area 10 is calculated according to the gamma reference voltage of the first display area 10 before and after the brightness adjustment. The compensation coefficient of the gamma register parameter is the compensation coefficient of the gamma reference voltage, the gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient of the gamma reference voltage, the correction of the display brightness of the first display area 10 can be realized, the consistency of the first display area 10 and the second display area 20 is improved, the problem that the display panel is layered in the special-shaped display area is solved, the problem that the display panel is layered in the special-shaped display area by adopting a Demura compensation scheme in the prior art can be replaced, the production cost of products is reduced, and the production efficiency of the products is improved.
Optionally, calculating a compensation coefficient of a gamma register parameter of the first display area 10 according to the gamma reference voltages of the first display area 10 before and after adjustment includes:
the compensation coefficient of the gamma register parameter is determined according to the ratio of the gamma reference voltages of the first display region 10 before and after adjustment,
or the compensation coefficient of the gamma register parameter is determined according to the difference of the gamma reference voltages of the first display region 10 before and after the adjustment.
Specifically, a ratio between the gamma reference voltage of the first display area 10 before adjustment and the gamma reference voltage of the first display area 10 after adjustment may be calculated to obtain the compensation coefficient of the gamma register parameter of the first display area 10. The ratio here may be obtained from the former to the latter, or from the latter to the former. If the compensation coefficient of the gamma register parameter is a ratio obtained by comparing the former with the latter, when the gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient, the compensated gamma reference voltage is obtained by dividing the gamma reference voltage of the first display area 10 by the compensation coefficient before adjustment. Similarly, if the compensation coefficient of the gamma register parameter is a ratio obtained by comparing the latter with the former, when the gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient, the compensated gamma reference voltage is obtained by adjusting the gamma reference voltage of the first display area 10 before multiplied by the compensation coefficient.
The difference between the gamma reference voltage of the first display area 10 before adjustment and the gamma reference voltage of the first display area 10 after adjustment can also be calculated to obtain the compensation coefficient of the gamma register parameter of the first display area 10. The difference here may be obtained by subtracting the former from the latter, or may be obtained by subtracting the former from the latter. If the compensation coefficient of the gamma register parameter is a difference obtained by subtracting the former from the latter, when the gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient, the compensated gamma reference voltage is obtained by subtracting the compensation coefficient from the gamma reference voltage corresponding to the gray scale voltage of the first display area 10 before adjustment; if the compensation coefficient of the gamma register parameter is a difference obtained by subtracting the former from the latter, when the gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient, the compensated gamma reference voltage is obtained by adjusting the gamma reference voltage of the first display area 10 before and adding the compensation coefficient. The gamma reference voltage of the first display area 10 is compensated according to the compensation coefficient of the gamma reference voltage, the correction of the display brightness of the first display area 10 can be achieved, the consistency of the first display area 10 and the second display area 20 is improved, the problem that the display panel is layered in the special-shaped display area is solved, the problem that the display panel is layered in the special-shaped display area can be replaced by adopting a Demura compensation scheme in the prior art, the production cost of products is reduced, and the production efficiency of the products is improved.
And S330, correcting the display brightness of the first display area according to the compensation coefficient.
Fig. 6 is a flowchart of another brightness compensation method for a display panel according to an embodiment of the present invention, and referring to fig. 6, the method includes:
and S410, determining the line range of the first display area.
Specifically, referring to fig. 3, a first row x1 and a last row x2 of the first display area 10 in the display panel are determined, and the display area between the first row x1 and the last row x2 is the first display area 10. Thus, determining the first row x1 and the last row x2 of the first display region 10 in the display panel may determine the position of the first display region 10 in the display panel. After the line range of the first display area 10 is determined, the relevant position is converted into a specific parameter and written into the driving chip, so as to provide accurate position data in the subsequent process of correcting the brightness of the first display area 10.
S420, adjusting a gamma curve of the display panel according to the display brightness of the second display area; and determining gamma register values of different gray scales on the gamma curve.
Specifically, the range of the second display area 20 can be determined by referring to the positions of the first row x1 and the last row x2 of the first display area 10 in the display panel. The range of the row where the second display area 20 is located does not include open slots, blind holes or transparent display, and the second display area 20 is a normal display area. Before the display brightness of the first display area 10 and the display brightness of the second display area 20 under the same gamma register parameter are obtained, the gamma curve of the display panel can be adjusted according to the display brightness of the second display area 20; and determining gamma register values of different gray levels on the gamma curve. The gamma curve may be determined by setting a plurality of gray level binding points. Each gray scale binding point corresponds to the brightness value of one display panel. The more the number of the set gray scale binding points is, the more accurate the determined gamma curve is. For example, the display brightness of the display panel is set to be 0-255 gray levels, the maximum value of the number of gray level bindings is 256, and the obtained gamma curve is the most accurate. Adjusting the gamma curve of the display panel is to adjust the brightness value corresponding to each gray scale binding point, so as to adjust the brightness value corresponding to each gray scale in the gamma curve, and enable the brightness displayed by the display panel under each gray scale to reach the set brightness value. At this time, the set brightness value of the second display area 20 is the target brightness value of the display panel.
In adjusting the gamma curve, the brightness of the second display region 20 may be acquired using a small-sized probe color analyzer, and the gamma curve of the display panel may be adjusted according to the display brightness of the second display region 20. For example, the gray level binding point is set to 0 to 255 gray levels, and the pixels include a red pixel (R), a green pixel (G), and a blue pixel (B). The gray level bindings are: r255, R254 … … R0; g255, G254 … … G0; b255 and B254 … … B0. The register value corresponding to the gamma voltage of each gray scale binding point is adjusted to make the brightness values of the second display area 20 at different gray scales reach the respective corresponding set brightness values. Thereby determining the display brightness of the second display area 20. Obtaining register values corresponding to the gamma voltage of each adjusted gray scale tie point, wherein the register values are r255 and r254 … … r 0; g255, g254 … … g 0; b255 and b254 … … b0, and these values are used as register values corresponding to gamma voltages of the whole display panel.
S430, acquiring the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter; the display panel comprises a first display area, a second display area and a non-display area; the first display area is located on both sides of the non-display area in the row direction.
S440, adjusting the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the compensation coefficient of the gamma register parameter of the first display area.
Optionally, adjusting the display brightness of the first display area 10 to be equal to the display brightness of the second display area 20 includes:
the display brightness of the first display area 10 under different gray scales is adjusted to be equal to the display brightness of the second display area 20.
Specifically, the more the number of the set gray scale binding points is, the more accurate the determined gamma curve is. When the display brightness of the first display area 10 is adjusted to be equal to the display brightness of the second display area 20 and the compensation coefficient of the gamma register parameter of the first display area 10 is determined, the display brightness of the first display area 10 at different gray scales can be sequentially adjusted to be equal to the display brightness of the second display area 20. Thereby obtaining the compensation coefficient of the gamma register parameter under different gray scales. For example, if the display brightness of the display panel is divided into 256 gray levels, the maximum value of the number of gray level bindings is 256, and the obtained gamma curve is the most accurate. The display brightness of the first display area 10 is equal to the display brightness of the second display area 20 under the gray scales of 0-255, so that the compensation coefficient of the gamma register parameter under each gray scale is obtained. The consistency of the first display area 10 and the second display area 20 is further improved, and the problem that the display panel is layered in a special-shaped display area is solved. The effect of reducing the cost and optimizing the screen separation phenomenon between the special-shaped display area and the normal display area under the condition of not using a Demura compensation scheme is achieved.
S450, burning the compensation coefficient to a gamma register of the display panel; and compensating the gamma register parameters of the first display area through the compensation coefficients.
And S460, correcting the display brightness of the first display area according to the compensated gamma register parameters.
The embodiment of the present invention further provides a brightness compensation apparatus for a display panel, configured to execute the brightness compensation method for a display panel according to any embodiment, where the display panel includes a first display area, a second display area, and a non-display area; along the row direction, the first display area is positioned at two sides of the non-display area; fig. 7 is a block diagram of a luminance compensation apparatus for a display panel according to an embodiment of the present invention, and referring to fig. 7, the apparatus includes:
an obtaining module 100, configured to obtain display brightness of a first display area and display brightness of a second display area under the same gamma register parameter;
a compensation parameter determining module 200, configured to adjust the display brightness of the first display area to be equal to the display brightness of the second display area, and determine a compensation coefficient of the gamma register parameter of the first display area;
and the driving module 300 is configured to modify the display brightness of the first display area according to the compensation coefficient.
Specifically, the brightness compensation apparatus of the display panel includes an obtaining module 100, a compensation parameter determining module 200, and a driving module 300. The obtaining module 100 is configured to obtain the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter; the display panel comprises a first display area, a second display area and a non-display area; the second display area is a normal display area, the non-display area is an area provided with a slot, a blind hole or a transparent display, and the first display areas are positioned on two sides of the non-display area. And for the display areas with the same display pixel arrangement, the display brightness is the same under the same gamma register parameter. However, the first display area has a structure of a slot, a blind hole or a transparent display in the line range, and the number of pixels connected by the scanning lines in the first display area is different from the number of pixels connected by the scanning lines in the second display area, that is, the load of the scanning lines in the first display area is different from the load of the scanning lines in the second display area. Due to the difference in the loads of the two display regions, the display luminance of the first display region tends to be darker than the display luminance of the second display region.
The compensation parameter determining module 200 is configured to adjust the display brightness of the first display region to be equal to the display brightness of the second display region, and determine a compensation coefficient of the gamma register parameter of the first display region. And after the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter are detected, the gamma register parameter of the gamma register is obtained. And calculating the compensation coefficient of the gamma register parameter of the first display area according to the gamma register parameter of the first display area before and after adjustment.
After the compensation parameter determining module 200 determines the compensation coefficient of the gamma register parameter of the first display area, the gamma register parameter of the first display area is compensated according to the compensation coefficient. The driving module 300 is configured to modify the display brightness of the first display area according to the compensation coefficient. Under the compensated gamma register parameters, the driving module 300 can correct the display brightness of the first display area, improve the consistency between the display brightness of the first display area and the display brightness of the second display area, improve the layering phenomenon of the display panel, and can replace the layering phenomenon of the special-shaped display area solved by adopting a Demura compensation scheme in the prior art, thereby reducing the production cost of products and improving the production efficiency of the products.
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 (10)
1. The brightness compensation method of the display panel is characterized in that the display panel comprises a first display area, a second display area and a non-display area; the first display area is positioned on two sides of the non-display area along the row direction; the brightness compensation method includes:
acquiring the display brightness of a first display area and the display brightness of a second display area under the same gamma register parameter;
adjusting the display brightness of the first display area to be equal to the display brightness of the second display area, and determining a compensation coefficient of a gamma register parameter of the first display area;
and correcting the display brightness of the first display area according to the compensation coefficient.
2. The method of claim 1, wherein the gamma register parameters comprise register values corresponding to gray scale voltages; then said adjusting the display brightness of said first display region to be equal to the display brightness of said second display region, and determining the compensation coefficient of the gamma register parameter of said first display region, includes:
adjusting a register value corresponding to the gray scale voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the register value corresponding to the current gray scale voltage of the first display area;
and calculating the compensation coefficient of the gamma register parameter of the first display area according to the register value corresponding to the gray scale voltage of the first display area before and after adjustment.
3. The method of claim 2, wherein the calculating the compensation coefficient of the gamma register parameter of the first display region according to the register value corresponding to the gray scale voltage of the first display region before and after the adjusting comprises:
determining the compensation coefficient of the gamma register parameter according to the ratio of the register values corresponding to the gray scale voltages of the first display area before and after adjustment,
or determining the compensation coefficient of the gamma register parameter according to the difference value of the register values corresponding to the gray scale voltages of the first display area before and after adjustment.
4. The method of claim 1, wherein the gamma register parameters comprise a gamma reference voltage; then said adjusting the display brightness of said first display region to be equal to the display brightness of said second display region, and determining the compensation coefficient of the gamma register parameter of said first display region, includes:
adjusting the gamma reference voltage of the first display area to enable the display brightness of the first display area to be equal to the display brightness of the second display area, and determining the current gamma reference voltage of the first display area;
and calculating the compensation coefficient of the gamma register parameter of the first display area according to the gamma reference voltage of the first display area before and after adjustment.
5. The method of claim 4, wherein the calculating the compensation coefficient of the gamma register parameter of the first display region according to the gamma reference voltage of the first display region before and after the adjusting comprises:
determining a compensation coefficient of the gamma register parameter according to a ratio of gamma reference voltages of the first display region before and after adjustment,
or determining a compensation coefficient of the gamma register parameter according to a difference value of gamma reference voltages of the first display area before and after adjustment; wherein the gamma reference voltage includes a maximum gamma voltage value or a minimum gamma voltage value.
6. The method of claim 1, wherein before obtaining the display brightness of the first display region and the display brightness of the second display region under the same gamma register parameter, the method further comprises:
determining a line range of the first display area.
7. The method of claim 6, wherein before obtaining the display brightness of the first display region and the display brightness of the second display region under the same gamma register parameter, the method further comprises:
adjusting a gamma curve of the display panel according to the display brightness of the second display area;
and determining gamma register values of different gray scales on the gamma curve.
8. The method of claim 7, wherein adjusting the display brightness of the first display region to be equal to the display brightness of the second display region comprises:
and sequentially adjusting the display brightness of the first display area to be equal to the display brightness of the second display area under different gray scales.
9. The method for compensating brightness of a display panel according to claim 7, wherein the modifying the display brightness of the first display region according to the compensation factor comprises:
burning the compensation coefficient to a gamma register of the display panel;
compensating the gamma register parameters of the first display area through the compensation coefficients;
and correcting the display brightness of the first display area according to the compensated gamma register parameters.
10. A brightness compensation device of a display panel is characterized in that the display panel comprises a first display area, a second display area and a non-display area; the first display area is positioned on two sides of the non-display area along the row direction; the brightness compensation device includes:
the acquisition module is used for acquiring the display brightness of the first display area and the display brightness of the second display area under the same gamma register parameter;
the compensation parameter determining module is used for adjusting the display brightness of the first display area to be equal to the display brightness of the second display area and determining a compensation coefficient of a gamma register parameter of the first display area;
and the driving module is used for correcting the display brightness of the first display area according to the compensation coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011448068.8A CN112562585A (en) | 2020-12-09 | 2020-12-09 | Brightness compensation method and device of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011448068.8A CN112562585A (en) | 2020-12-09 | 2020-12-09 | Brightness compensation method and device of display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112562585A true CN112562585A (en) | 2021-03-26 |
Family
ID=75061336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011448068.8A Pending CN112562585A (en) | 2020-12-09 | 2020-12-09 | Brightness compensation method and device of display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112562585A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925498A (en) * | 2021-04-12 | 2021-06-08 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma value in stacked screen, stacked screen and storage medium |
| CN113284458A (en) * | 2021-05-31 | 2021-08-20 | 昆山工研院新型平板显示技术中心有限公司 | Gray scale compensation method of display panel |
| CN113299216A (en) * | 2021-05-28 | 2021-08-24 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113593467A (en) * | 2021-08-11 | 2021-11-02 | 昆山国显光电有限公司 | Display panel optical compensation method, device and machine readable storage medium |
| CN113920942A (en) * | 2021-11-19 | 2022-01-11 | 合肥维信诺科技有限公司 | Brightness adjusting and optimizing method, device, chip and equipment of display panel |
| CN114283732A (en) * | 2021-12-29 | 2022-04-05 | Oppo广东移动通信有限公司 | Brightness compensation method, device, storage medium and electronic equipment |
| CN114333675A (en) * | 2021-12-30 | 2022-04-12 | 昆山国显光电有限公司 | Display compensation method, display compensation device, display device and storage medium |
| CN114582281A (en) * | 2022-03-17 | 2022-06-03 | 京东方科技集团股份有限公司 | Method and apparatus for panel display gamma correction |
| CN115631734A (en) * | 2022-11-02 | 2023-01-20 | 上海傲显科技有限公司 | Display screen brightness compensation method and brightness compensation device |
| US11626086B1 (en) | 2021-12-29 | 2023-04-11 | Wuhan Tianma Micro-Electronics Co., Ltd. | Brightness adjustment method of display panel and brightness adjustment device of display panel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110447061A (en) * | 2019-04-22 | 2019-11-12 | 京东方科技集团股份有限公司 | Luminance compensation parameter detection method, luminance compensation method, luminance compensation parameter detection device, luminance compensating mechanism, display device and storage medium |
| CN110619836A (en) * | 2019-10-31 | 2019-12-27 | Oppo广东移动通信有限公司 | Display screen processing method and device, storage medium and electronic equipment |
| US20200074918A1 (en) * | 2018-08-30 | 2020-03-05 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display method and display system of singular-shaped display panel, storage device and display device |
| CN111564131A (en) * | 2020-05-27 | 2020-08-21 | 昆山国显光电有限公司 | Gamma debugging method and device |
| CN111653249A (en) * | 2020-06-01 | 2020-09-11 | 昆山国显光电有限公司 | Display control method and device of display panel and electronic equipment |
| CN111816113A (en) * | 2020-07-29 | 2020-10-23 | 昆山工研院新型平板显示技术中心有限公司 | Brightness compensation method, device and equipment of display panel |
-
2020
- 2020-12-09 CN CN202011448068.8A patent/CN112562585A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200074918A1 (en) * | 2018-08-30 | 2020-03-05 | Beijing Boe Optoelectronics Technology Co., Ltd. | Display method and display system of singular-shaped display panel, storage device and display device |
| CN110447061A (en) * | 2019-04-22 | 2019-11-12 | 京东方科技集团股份有限公司 | Luminance compensation parameter detection method, luminance compensation method, luminance compensation parameter detection device, luminance compensating mechanism, display device and storage medium |
| CN110619836A (en) * | 2019-10-31 | 2019-12-27 | Oppo广东移动通信有限公司 | Display screen processing method and device, storage medium and electronic equipment |
| CN111564131A (en) * | 2020-05-27 | 2020-08-21 | 昆山国显光电有限公司 | Gamma debugging method and device |
| CN111653249A (en) * | 2020-06-01 | 2020-09-11 | 昆山国显光电有限公司 | Display control method and device of display panel and electronic equipment |
| CN111816113A (en) * | 2020-07-29 | 2020-10-23 | 昆山工研院新型平板显示技术中心有限公司 | Brightness compensation method, device and equipment of display panel |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112925498A (en) * | 2021-04-12 | 2021-06-08 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma value in stacked screen, stacked screen and storage medium |
| CN112925498B (en) * | 2021-04-12 | 2024-01-26 | 京东方科技集团股份有限公司 | Method and device for adjusting Gamma value in screen overlapping, screen overlapping and storage medium |
| CN113299216B (en) * | 2021-05-28 | 2023-01-20 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113299216A (en) * | 2021-05-28 | 2021-08-24 | 昆山国显光电有限公司 | Gamma debugging method, device, equipment and storage medium |
| CN113284458A (en) * | 2021-05-31 | 2021-08-20 | 昆山工研院新型平板显示技术中心有限公司 | Gray scale compensation method of display panel |
| CN113593467A (en) * | 2021-08-11 | 2021-11-02 | 昆山国显光电有限公司 | Display panel optical compensation method, device and machine readable storage medium |
| CN113920942A (en) * | 2021-11-19 | 2022-01-11 | 合肥维信诺科技有限公司 | Brightness adjusting and optimizing method, device, chip and equipment of display panel |
| US11626086B1 (en) | 2021-12-29 | 2023-04-11 | Wuhan Tianma Micro-Electronics Co., Ltd. | Brightness adjustment method of display panel and brightness adjustment device of display panel |
| CN114283732A (en) * | 2021-12-29 | 2022-04-05 | Oppo广东移动通信有限公司 | Brightness compensation method, device, storage medium and electronic equipment |
| CN114283732B (en) * | 2021-12-29 | 2024-02-23 | Oppo广东移动通信有限公司 | Brightness compensation method and device, storage medium and electronic equipment |
| CN114333675A (en) * | 2021-12-30 | 2022-04-12 | 昆山国显光电有限公司 | Display compensation method, display compensation device, display device and storage medium |
| CN114333675B (en) * | 2021-12-30 | 2023-06-27 | 昆山国显光电有限公司 | Display compensation method, device, display device and storage medium |
| CN114582281A (en) * | 2022-03-17 | 2022-06-03 | 京东方科技集团股份有限公司 | Method and apparatus for panel display gamma correction |
| CN114582281B (en) * | 2022-03-17 | 2023-09-01 | 京东方科技集团股份有限公司 | Method and apparatus for panel display gamma correction |
| CN115631734A (en) * | 2022-11-02 | 2023-01-20 | 上海傲显科技有限公司 | Display screen brightness compensation method and brightness compensation device |
| CN115631734B (en) * | 2022-11-02 | 2023-09-29 | 上海傲显科技有限公司 | Display screen brightness compensation method and brightness compensation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112562585A (en) | Brightness compensation method and device of display panel | |
| CN107068037B (en) | Gray scale correction method and gray scale correction device of display panel | |
| US10839731B2 (en) | Mura correction system | |
| CN109523955B (en) | Pixel compensation method and device, storage medium and display screen | |
| CN111816112A (en) | Method and device for determining compensation parameters of display panel | |
| KR20120025453A (en) | Organic el display device and method for manufacturing the same | |
| CN113228152B (en) | Device and method for controlling screen brightness | |
| KR20120139451A (en) | Liquid crystal display device and driving method thereof | |
| CN109949744B (en) | Gamma voltage correction method and device | |
| US20220172664A1 (en) | Mura Compensation Device and Data Processing Circuit for Mura Compensation | |
| KR20200074645A (en) | Display apparatus and control method thereof | |
| CN110021271B (en) | Optical compensation method, optical compensation system, display method and display device | |
| KR20140129727A (en) | Apparatus and Method for Generating of Luminance Correction Data | |
| CN114898706B (en) | Display screen brightness compensation method and device and computer equipment | |
| KR20160054141A (en) | Display Device and Driving Method Thereof | |
| CN110785803A (en) | Image display device | |
| CN114981873A (en) | Gamma correction method and device, electronic device and readable storage medium | |
| CN113920917A (en) | Display panel compensation method and compensation device | |
| CN110728953B (en) | Gray scale voltage correction method, driving method, correction system and storage medium | |
| CN113971918A (en) | Method for obtaining compensation gray scale value, image display method, device and medium | |
| CN111899690B (en) | Method and device for improving low-brightness Mura | |
| CN112614455A (en) | Display screen color temperature drift compensation method, device and system and display control system | |
| CN110599943A (en) | Display panel pixel compensation method and compensation device and display panel | |
| CN114550649B (en) | Pixel compensation method and system | |
| US20240062696A1 (en) | Demura method for display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |