CN110473499B - Gamma voltage debugging method for display panel, display panel and display device - Google Patents
Gamma voltage debugging method for display panel, display panel and display device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—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
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
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- 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
- G09G2320/0257—Reduction of after-image effects
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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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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Abstract
The invention discloses a gamma voltage debugging method for a display panel, the display panel and a display device. The display panel is correspondingly provided with N groups of gamma voltage groups, N is a positive integer, N is more than or equal to 2, and each group of gamma voltage groups corresponds to a brightness mode; the gamma voltage debugging method comprises the following steps: and independently debugging the voltage values in each gamma voltage group corresponding to the black picture of the display panel to obtain the debugging voltage values in each gamma voltage group corresponding to the black picture, wherein the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different. The invention can reduce the power consumption of the display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a gamma voltage debugging method for a display panel, and a display device.
Background
In the field of display technology, an OLED (Organic Light-Emitting Diode) display device has the characteristics of wide color gamut, wide viewing angle, thin, light weight, low energy consumption, high response speed, high contrast ratio, flexibility and the like, and is attracting attention, so that the OLED (Organic Light-Emitting Diode) display device gradually becomes one of the main development directions of the display field.
At present, in order to enable the OLED module to achieve a better display effect, a plurality of gamma voltage groups are preset in order to achieve the purpose of adjusting different display brightness, so that the brightness of ambient light is adapted, the use experience of a user is improved, and the power consumption loss can be correspondingly reduced.
Therefore, how to further reduce power consumption and improve display effect under the condition of setting multiple gamma voltage sets is still a technical problem to be solved in the art.
Disclosure of Invention
In view of the above, the present invention provides a gamma voltage debugging method for a display panel, a display panel and a display device, which solve the above technical problems.
In order to solve the above technical problems, in a first aspect, the present invention provides a gamma voltage debugging method for a display panel, wherein the display panel is correspondingly provided with N groups of gamma voltages, N is a positive integer, N is greater than or equal to 2, and each group of gamma voltages corresponds to a brightness mode; the gamma voltage debugging method comprises the following steps:
and independently debugging the voltage values in each gamma voltage group corresponding to the black picture of the display panel to obtain the debugging voltage values in each gamma voltage group corresponding to the black picture, wherein the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different.
In a second aspect, the present invention further provides a display panel, which is manufactured by adopting any one of the gamma voltage debugging methods provided by the present invention, wherein the debugging voltage values in each group of gamma voltage groups corresponding to the black picture are stored in the driving chip; the display device comprises a plurality of brightness modes, wherein the brightness of the black picture of the display panel corresponding to at least two brightness modes is different.
In a third aspect, the present invention further provides a display device, including any one of the display panels provided by the present invention.
Compared with the prior art, the gamma voltage debugging method for the display panel, the display panel and the display device provided by the invention have the advantages that at least the following beneficial effects are realized:
compared with the related technology, the gamma voltage debugging method provided by the invention can reduce the power consumption of displaying black pictures in a lower brightness mode. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a graph showing partial voltage values of multiple gamma voltage sets after debugging in the related art;
FIG. 2 is a graph showing a partial voltage value of a plurality of gamma voltage groups after being debugged by the debugging method according to the embodiment of the present invention;
FIG. 3 is a flow chart of a gamma voltage debugging method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of two partial voltage values of multiple gamma voltage groups after debugging by the debugging method according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a partial voltage value of a plurality of gamma voltage groups after debugging by using the debugging method according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of partial voltage values of multiple gamma voltage groups after debugging by using the debugging method according to the embodiment of the present invention;
FIG. 7 is a diagram showing a partial voltage value of a plurality of gamma voltage groups after debugging by using the debugging method according to the embodiment of the present invention;
FIG. 8 is a schematic diagram of a display panel according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a display device according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the related art, when performing gamma voltage debugging, in order to simplify the debugging steps and improve the efficiency, only voltage values in a group of gamma voltage groups corresponding to a black picture are usually debugged, and then voltage values in all gamma voltage groups corresponding to the black picture are set to be equal, or voltage values in all gamma voltage groups corresponding to the black picture are set to be equal according to experience values. FIG. 1 is a diagram showing the partial voltage values of multiple gamma voltage sets after debugging in the related art. Wherein, G0 represents 0 gray scale, G1 represents 1 gray scale, and so on, r\g\b respectively represents three sub-pixels of red, green and blue, and the data units in table 1 are all voltage units V. The inventors believe that the debugging method in the related art, although simplifying the debugging steps, since the voltage values in all the gamma voltage groups corresponding to the black picture are equal, the brightness of the corresponding black picture in all the brightness modes of the display panel is identical, for example, the brightness of the black picture in the high brightness mode is identical to the brightness of the black picture in the low brightness mode, although the brightness difference is difficult to be recognized by human eyes when the black picture is displayed in the two brightness modes, in the case that the display brightness of the black picture in the low brightness mode is bright and dark, the display brightness of the black picture in the low brightness mode is bright due to the design in the related art, and thus, the power consumption for displaying the black picture in the low brightness mode is particularly large. In addition, when the optical crosstalk test of the display panel is performed, a white voltage (displaying a white picture) -a black voltage (displaying a black picture) -a white voltage are sequentially input into the data line, and due to the coupling effect inside the panel, bright and dark lines appear on the display panel when the black and white voltages are switched. Based on the above, the invention provides a gamma voltage debugging method for a display panel, which reduces the power consumption during the display of a black picture in a low-brightness mode and improves the optical crosstalk and the afterimage phenomenon in the low-brightness mode by independently debugging the voltage value in each gamma voltage group corresponding to the black picture.
The invention provides a gamma voltage debugging method for a display panel, wherein the display panel is correspondingly provided with N groups of gamma voltage groups, N is a positive integer and is more than or equal to 2, and each group of gamma voltage groups corresponds to a brightness mode; the number of gamma voltage groups in the display panel can be set according to specific design requirements. For example, n=4 or n=7, by setting multiple gamma voltage groups, different gamma voltage groups can be selected and invoked according to the brightness of ambient light during display, so as to realize adjustment of the screen display brightness. The gamma voltage debugging method comprises the following steps:
and independently debugging the voltage values in each gamma voltage group corresponding to the black picture of the display panel to obtain the debugging voltage values in each gamma voltage group corresponding to the black picture, wherein the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different. The debug voltage value is a data signal voltage value used for being transmitted to the data line and controlling the sub-pixel to display. When a black picture is displayed, after a certain gamma voltage group is called, the corresponding debugging voltage value in the gamma voltage group is transmitted to the data line.
The gamma voltage debugging method provided by the invention is used for independently debugging the voltage value in each gamma voltage group corresponding to the black picture, and the debugging result can be that when only two gamma voltage groups exist, the debugging voltage values in the two gamma voltage groups corresponding to the black picture are different; when the gamma voltage groups are more than two groups, the debugging voltage values in the gamma voltage groups corresponding to the black picture are the same, and the debugging voltage values in the rest gamma voltage groups are different; when the gamma voltage sets are larger than two sets, the debugging voltage values in the gamma voltage sets corresponding to the black pictures can be different. Referring to fig. 2, taking an example that a display panel includes 1 to 7 total 7 gamma voltage groups, i.e., n=7, fig. 2 illustrates that a part of voltage values of a plurality of gamma voltage groups after being debugged by the debug method provided by the embodiment of the present invention are one, it is illustrated that debug voltage values in each gamma voltage group corresponding to a black picture are different, i.e., voltage values corresponding to G0 in each gamma voltage group are different, and data in the table are only schematically represented and are not limiting to the present invention.
In all tables in the drawings of the present invention: g0 represents 0 gray scale, G1 represents 1 gray scale, and so on. R\G\B respectively represents the sub-pixels of three colors of red, green and blue, and the data units in the table are all voltages V.
The gamma voltage debugging method provided by the invention is used for independently debugging the voltage value in each gamma voltage group corresponding to the black picture, and the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different. That is, the voltage value to be introduced into the data line is independently adjusted when the black picture is displayed in each different brightness mode, and the voltage value to be introduced into the data line is small enough while the black picture can be displayed. Taking the example that the display panel comprises a high brightness mode and a low brightness mode, adopting a debugging mode in the related technology to obtain that the voltage values in two gamma voltage groups corresponding to the black picture are equal to 5.6V; the voltage value in each gamma voltage group corresponding to the black picture is independently debugged by adopting the design of the invention, so that the voltage value corresponding to the black picture in a high brightness mode (the 1 st gamma voltage group) is 5.6V, the voltage value corresponding to the black picture in a low brightness mode (the 7 th gamma voltage group) is 5.4V, namely, through testing, the black picture can be controlled to be displayed by introducing the voltage of 5.4V to the data line in the low brightness mode. By adopting the debugging method provided by the invention, the power consumption of displaying the black picture in a lower brightness mode can be reduced. In addition, assuming that the voltage value corresponding to the white picture in the low brightness mode is 3.9V by adopting the debugging mode in the related art, and the voltage value corresponding to the white picture in the low brightness mode is also 3.9V by adopting the debugging mode provided by the invention, the difference between the voltage value corresponding to the black picture in the lower brightness mode and the voltage value corresponding to the white picture can be reduced by adopting the debugging method provided by the invention, so that the optical crosstalk and the ghost phenomenon in the lower brightness mode can be improved, and the display effect can be improved.
In the debugging method provided by the invention, in any brightness mode of the display panel, the brightness change between the brightest (displaying white picture) and the darkest (displaying black picture) is divided into 256 layers, namely 256 gray scales from 0 to 255, wherein the black picture corresponds to 0 gray scale and the white picture corresponds to 255 gray scales. When the voltage values in any one gamma voltage group are debugged, besides the voltage values in the gamma voltage group corresponding to the black picture (0 gray scale), the voltage values corresponding to the white picture (255 gray scale) are required to be debugged. Optionally, a plurality of gray scales are selected between 0 gray scale and 255 gray scale for voltage value debugging, so that a one-to-one correspondence between the plurality of gray scales and the voltage values in the gamma voltage group is determined, then the driving chip operates according to the one-to-one correspondence between the plurality of gray scales and the voltage values, and voltage values corresponding to the gray scales which are not debugged are automatically generated, so that all the gray scales and the voltage values corresponding to the gray scales in the gamma voltage group are obtained. When gamma voltage debugging is carried out, all gray scales in a group of gamma voltage groups do not need to be debugged one by one, so that gamma voltage debugging time can be greatly saved, and efficiency is improved.
In one implementation, fig. 3 is a flowchart of a gamma voltage debugging method according to an embodiment of the present invention. As shown in fig. 3, the voltage value in each gamma voltage group corresponding to the black picture is independently debugged, including:
step one: inputting a first voltage value to a data line in the display panel, and controlling the display panel to display a black picture; the first voltage value may be an empirical value in the luminance mode, or may be a test value obtained when the previous display panel is tested.
Step two: testing the display brightness of the black picture to obtain a test brightness value;
step three: and comparing the test brightness value with a target brightness value, wherein the target brightness value is a brightness value corresponding to 0 gray scale obtained by conversion according to a gamma curve in a certain brightness mode, and the gamma curve can be gamma 2.0 or gamma 2.2. The method comprises the following steps:
when the test brightness value is equal to the target brightness value, recording the first voltage value as a debugging voltage value;
and when the test brightness value is larger or smaller than the target brightness value, the first voltage value is adjusted, and then the first to third steps are continuously executed until the test brightness value is equal to the target brightness value.
When each gamma voltage group is debugged, the debugging voltage value corresponding to the black picture is obtained through the voltage debugging process, so that the black picture is displayed by inputting the debugging voltage value to the data line in each brightness mode. In each brightness mode, a voltage value small enough is introduced to the data line to display the black picture, so that the power consumption for displaying the black picture can be reduced. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
In one embodiment, the luminance modes of the display panel include a first luminance mode and a second luminance mode, the gamma voltage group includes a first gamma voltage group and a second gamma voltage group, the first luminance mode corresponds to the first gamma voltage group, the second luminance mode corresponds to the second gamma voltage group, and the luminance of the white picture in the first luminance mode is greater than the luminance of the white picture in the second luminance mode;
independently debugging voltage values in each gamma voltage group corresponding to the black picture to obtain debugging voltage values in each gamma voltage group corresponding to the black picture, wherein the method comprises the following steps:
debugging the voltage value in the first gamma voltage group corresponding to the black picture to obtain a first debugging voltage value; debugging the voltage value in the second gamma voltage group corresponding to the black picture to obtain a second debugging voltage value; the first debug voltage value is greater than the second debug voltage value.
Fig. 4 is a schematic diagram of a second voltage value of a portion of a plurality of gamma voltage sets after debugging by using the debugging method according to the embodiment of the present invention, taking a gamma voltage set including a first gamma voltage set Z1 and a second gamma voltage set Z2 as an example, where the units of data in the table are all voltages V. The first debug voltage value corresponding to the black picture, i.e. G0, in the first gamma voltage group Z1 is 5.6, and the second debug voltage value corresponding to the black picture, i.e. G0, in the second gamma voltage group Z2 is 5.567. In this embodiment, the first luminance mode belongs to a high luminance mode compared to the second luminance mode, and the second luminance mode belongs to a low luminance mode, that is, the test voltage value corresponding to the black picture in the high luminance mode is greater than the test voltage value corresponding to the black picture in the low luminance mode. Fig. 4 is only illustrated with two gamma voltage groups, and in a display panel including a plurality of gamma voltage groups, the display panel is divided into different brightness levels according to different brightness modes, and the higher the brightness level, the greater the brightness of a white screen is displayed. By adopting the gamma voltage debugging method provided by the invention, the voltage values in each gamma voltage group corresponding to the black picture are obtained after the test, and the lower the brightness level corresponding to the gamma voltage group is, the smaller the voltage value when the gamma voltage group corresponds to the black picture is displayed. In each brightness mode, a voltage value small enough is introduced to the data line to display the black picture, so that the power consumption for displaying the black picture can be reduced. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
In some alternative embodiments, the voltage values in each of the gamma voltage groups include a first color subpixel voltage value, a second color subpixel voltage value, and a third color subpixel voltage value; optionally, the voltage values in each of the gamma voltage groups include a red color subpixel voltage value, a green color subpixel voltage value, and a blue color subpixel voltage value.
The voltage values in each gamma voltage group corresponding to the black picture are debugged, wherein the voltage values comprise a first color sub-pixel voltage value, a second color sub-pixel voltage value and a third color sub-pixel voltage value which are respectively debugged to obtain debugging voltage values, and the debugging voltage values comprise a first color sub-pixel debugging voltage value, a second color sub-pixel debugging voltage value and a third color sub-pixel debugging voltage value; in this embodiment, when the voltage values corresponding to the black frame are debugged, the voltage values of the sub-pixels of the three colors are respectively debugged, that is, the voltage values corresponding to the 0 gray scale (displaying the black frame) in each gamma voltage group are all true test values, and compared with the voltage values in all gamma voltage groups corresponding to the black frame set in the related art which are equal, in each brightness mode, the black frame can be displayed by introducing the voltage values small enough on the data line, so that the power consumption for displaying the black frame is reduced. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
In one embodiment, the gamma voltage debugging method provided by the invention is used for debugging the voltage value in each gamma voltage group corresponding to the black picture, and the method comprises the following steps: debugging the voltage value in the first gamma voltage group corresponding to the black picture to obtain a first debugging voltage value; debugging voltage values in a second gamma voltage group corresponding to the black picture to obtain a second debugging voltage value, wherein the debugging voltage values of the three color sub-pixels of the first debugging voltage value are the same; the three color sub-pixel debug voltage values of the second debug voltage value are all the same. As shown in fig. 4, taking the first color sub-pixel, the second color sub-pixel and the third color sub-pixel as red color sub-pixel (R), green color sub-pixel (G) and blue color sub-pixel (B) respectively as examples, the debug voltage values of the three color sub-pixels in the first gamma voltage group Z1 corresponding to the black picture are all equal, that is, the voltage values of the three color sub-pixels of r\g\b under G0 are all 5.6V; and the debugging voltage values of the three color sub-pixels in the second gamma voltage group Z2 corresponding to the black picture are equal, namely, the voltage values of the three color sub-pixels R\G\B under G0 are 5.567V.
In one embodiment, the gamma voltage debugging method provided by the invention is used for debugging the voltage value in each gamma voltage group corresponding to the black picture and comprises the following steps of; debugging the voltage value in the first gamma voltage group corresponding to the black picture to obtain a first debugging voltage value; debugging voltage values in a second gamma voltage group corresponding to the black picture to obtain a second debugging voltage value, wherein two color sub-pixel debugging voltage values in the three color sub-pixel debugging voltage values of the first debugging voltage value are the same; the two color sub-pixel debug voltage values in the three color sub-pixel debug voltage values of the second debug voltage value are the same. Fig. 5 is a schematic diagram of three partial voltage values of multiple gamma voltage groups after debugging by using the debugging method provided by the embodiment of the present invention, as shown in fig. 5, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are respectively red color sub-pixel (R), green color sub-pixel (G) and blue color sub-pixel (B), two color sub-pixels in the first gamma voltage group Z1 corresponding to the black picture have the same debugging voltage value, the voltage values of the red and green color sub-pixels under G0 are 5.6V, and the voltage value of the blue color sub-pixel is 5.58V; the debugging voltage values of the two color sub-pixels in the second gamma voltage group Z2 corresponding to the black picture are the same, the debugging voltage values of the two color sub-pixels in red and blue under G0 are 5.567V, and the voltage values of the sub-pixels in green are 5.56V. In fig. 5, only schematically, in any one gamma voltage group, the debug voltage values corresponding to the black picture may be the same for any two color sub-pixels.
In one embodiment, the gamma voltage debugging method provided by the invention is used for debugging the voltage value in each gamma voltage group corresponding to the black picture, and the method comprises the following steps: debugging the voltage value in the first gamma voltage group corresponding to the black picture to obtain a first debugging voltage value; debugging voltage values in a second gamma voltage group corresponding to the black picture to obtain a second debugging voltage value, wherein the debugging voltage values of the three color sub-pixels of the first debugging voltage value are different; the three color sub-pixel debug voltage values of the second debug voltage value are different. Fig. 6 is a schematic diagram of four partial voltage values of multiple gamma voltage groups after debugging by using the debugging method provided by the embodiment of the present invention, where as shown in fig. 6, the first color sub-pixel, the second color sub-pixel and the third color sub-pixel are respectively red color sub-pixel (R), green color sub-pixel (G) and blue color sub-pixel (B), the debugging voltage values of the three color sub-pixels in the first gamma voltage group Z1 corresponding to the black picture are different, the voltage value of the red color sub-pixel under G0 is 5.6V, the voltage value of the green color sub-pixel is 5.5V, and the voltage value of the blue color sub-pixel is 5.4V; the debugging voltage values of the three color sub-pixels in the second gamma voltage group Z2 corresponding to the black picture are different, the voltage value of the red color sub-pixel under G0 is 5.4V, the voltage value of the green color sub-pixel is 5.3V, and the voltage value of the blue color sub-pixel is 5.2V.
It should be noted that, the data in fig. 4 to 6 are only schematically represented, and only for illustrating various situations that may occur in the gamma voltage group corresponding to the black picture when the gamma voltage group is debugged by using the gamma voltage debugging method provided by the present invention.
In one embodiment, as shown in fig. 2, a total of 7 gamma voltage groups 1 to 7 are illustrated in fig. 2, and the debug voltage values in the respective gamma voltage groups corresponding to the black picture (G0) are different.
In one embodiment, fig. 7 is a schematic diagram showing five partial voltage values of a plurality of gamma voltage groups after being debugged by the method according to the embodiment of the present invention, and fig. 7 is a schematic diagram showing a total of 7 gamma voltage groups 1 to 7, wherein the debug voltage values of at least two gamma voltage groups corresponding to a black picture (G0) are different, and the debug voltage values of three color sub-pixels (r\g\b) in the debug voltage values corresponding to the black picture (G0) are different.
Based on the same inventive concept, fig. 8 is a schematic diagram of a display panel provided by an embodiment of the present invention, and as shown in fig. 8, a display panel 100 includes a driving chip IC, where the display panel provided by the present invention is manufactured by using the gamma voltage debugging method provided by any of the foregoing embodiments, and debug voltage values in each group of gamma voltage groups corresponding to a black frame are all stored in the driving chip; the debug voltage value is a data signal voltage value used for being transmitted to the data line and controlling the sub-pixels to display. Optionally, the display panel provided by the invention is an organic light emitting display panel.
The display panel provided by the invention comprises a plurality of brightness modes, and the brightness of black pictures of the display panel corresponding to at least two brightness modes is different. When the two brightness modes are included, the brightness of the black picture of the display panel corresponding to the two brightness modes is different; when the brightness modes are more than two, the brightness of the black pictures of the display panels corresponding to part of the brightness modes is the same, and the brightness of the black pictures of the display panels corresponding to the rest of the brightness modes is different; when the luminance modes are greater than two, the luminance of the black frames of the corresponding display panels in all the luminance modes may be different.
In the display panel provided by the embodiment of the invention, the debug voltage values of the black pictures of the display panel corresponding to at least two brightness modes are different. The display panel provided by the invention is manufactured by adopting the gamma voltage debugging method provided by the invention, and the voltage values in each gamma voltage group corresponding to the black picture are independently debugged, so that the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different, and the brightness of the black picture of the display panel corresponding to at least two brightness modes is different. In the related art, if all the gamma voltage groups corresponding to the black frame are set to have equal voltage values, the brightness of the black frame of the display panel corresponding to each brightness mode is the same. Compared with the display panel in the related art, the display panel provided by the invention can reduce the power consumption when displaying black pictures, and simultaneously improve the optical crosstalk and the afterimage phenomenon in a low-brightness mode.
In an embodiment, in the display panel provided by the invention, the luminance modes include a first luminance mode and a second luminance mode, wherein the luminance of the white picture in the first luminance mode is greater than the luminance of the white picture in the second luminance mode, and the luminance of the black picture in the first luminance mode is greater than the luminance of the black picture in the second luminance mode. In the display panel, a plurality of luminance modes can be divided into different luminance levels, and the higher the luminance level is, the higher the luminance of the white screen is displayed. In this embodiment, the lower the luminance pattern level, the lower the luminance of the black screen, the smaller the debug voltage value for displaying the black screen which is introduced onto the data line in the lower luminance pattern, and the power consumption for displaying the black screen can be reduced. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
The present invention also provides a display device, and fig. 9 is a schematic diagram of a display device provided in an embodiment of the present invention, and as shown in fig. 9, the display device includes a display panel 200 provided in any embodiment of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, mobile phone, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interaction terminal, etc.
According to the embodiment, the gamma voltage debugging method for the display panel, the display panel and the display device provided by the invention have the following beneficial effects:
compared with the related technology, the gamma voltage debugging method provided by the invention can reduce the power consumption of displaying black pictures in a lower brightness mode. Meanwhile, the difference between the voltage value corresponding to the black picture and the voltage value corresponding to the white picture in the lower brightness mode can be reduced, so that the optical crosstalk and the afterimage phenomenon in the lower brightness mode can be improved, and the display effect is improved.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (9)
1. The gamma voltage debugging method for the display panel is characterized in that N groups of gamma voltage groups are correspondingly arranged on the display panel, N is a positive integer, N is more than or equal to 2, each group of gamma voltage groups corresponds to a brightness mode, and a black picture of the display panel corresponds to N groups of gamma voltage groups; according to the brightness of the ambient light, different gamma voltage groups are selected and called during display, and the brightness of the screen is adjusted, and the gamma voltage debugging method comprises the following steps:
independently debugging voltage values in each gamma voltage group corresponding to a black picture of the display panel to obtain debugging voltage values in each gamma voltage group corresponding to the black picture, wherein the debugging voltage values in at least two gamma voltage groups corresponding to the black picture are different, and the voltage values in each gamma voltage group respectively comprise a first color sub-pixel voltage value, a second color sub-pixel voltage value and a third color sub-pixel voltage value.
2. The gamma voltage debugging method of claim 1, wherein the gamma voltage debugging method comprises the steps of,
independently debugging the voltage value in each gamma voltage group corresponding to the black picture, wherein the independently debugging comprises the following steps:
step one: inputting a first voltage value to a data line in the display panel, and controlling the display panel to display a black picture;
step two: testing the display brightness of the black picture to obtain a test brightness value;
step three: comparing the test luminance value with a target luminance value, comprising:
when the test brightness value is equal to a target brightness value, recording the first voltage value as a debugging voltage value;
and when the test brightness value is larger than or smaller than the target brightness value, continuously executing the first to third steps after the first voltage value is regulated until the test brightness value is equal to the target brightness value.
3. The gamma voltage debugging method according to claim 1, wherein the luminance pattern of the display panel includes a first luminance pattern and a second luminance pattern, the gamma voltage group includes a first gamma voltage group and a second gamma voltage group, the first luminance pattern corresponds to the first gamma voltage group, the second luminance pattern corresponds to the second gamma voltage group, and the luminance of the white picture in the first luminance pattern is greater than the luminance of the white picture in the second luminance pattern; independently debugging the voltage value in each gamma voltage group corresponding to the black picture to obtain the debugging voltage value in each gamma voltage group corresponding to the black picture, wherein the debugging voltage value comprises the following steps:
debugging the voltage value in the first gamma voltage group corresponding to the black picture to obtain a first debugging voltage value;
debugging the voltage value in the second gamma voltage group corresponding to the black picture to obtain a second debugging voltage value; wherein the first debug voltage value is greater than the second debug voltage value.
4. The gamma voltage debugging method of claim 3, wherein the gamma voltage debugging method comprises the steps of,
the voltage values in each gamma voltage group corresponding to the black picture are debugged, wherein the voltage values comprise a first color sub-pixel voltage value, a second color sub-pixel voltage value and a third color sub-pixel voltage value which are respectively debugged to obtain the debug voltage values, and the debug voltage values comprise a first color sub-pixel debug voltage value, a second color sub-pixel debug voltage value and a third color sub-pixel debug voltage value;
wherein, at least two color sub-pixel debugging voltage values in the three color sub-pixel debugging voltage values of the first debugging voltage value are the same; at least two color sub-pixel debugging voltage values in the three color sub-pixel debugging voltage values of the second debugging voltage value are the same.
5. The gamma voltage debugging method of claim 3, wherein the gamma voltage debugging method comprises the steps of,
the voltage values in each of the gamma voltage groups include a first color sub-pixel voltage value, a second color sub-pixel voltage value, and a third color sub-pixel voltage value;
the voltage values in each gamma voltage group corresponding to the black picture are debugged, wherein the voltage values comprise a first color sub-pixel voltage value, a second color sub-pixel voltage value and a third color sub-pixel voltage value which are respectively debugged to obtain the debug voltage values, and the debug voltage values comprise a first color sub-pixel debug voltage value, a second color sub-pixel debug voltage value and a third color sub-pixel debug voltage value;
wherein, the three color sub-pixels of the first debug voltage value are different from each other in debug voltage value; the three color sub-pixel debug voltage values of the second debug voltage value are different.
6. A display panel comprising a driving chip, characterized in that the gamma voltage debugging method according to any one of claims 1 to 5 is adopted for manufacturing, and the debugging voltage values in each group of gamma voltage groups corresponding to the black picture are stored in the driving chip;
the display device comprises a plurality of brightness modes, wherein the brightness of black pictures of the display panel corresponding to at least two brightness modes is different.
7. The display panel according to claim 6, wherein the debug voltage values of the black pictures of the display panels corresponding to at least two of the luminance modes are different.
8. The display panel of claim 6, wherein the display panel comprises,
the luminance pattern comprises a first luminance pattern and a second luminance pattern, the luminance of the white picture in the first luminance pattern being greater than the luminance of the white picture in the second luminance pattern, wherein,
the brightness of the black picture in the first brightness mode is greater than the brightness of the black picture in the second brightness mode.
9. A display device comprising the display panel according to any one of claims 6 to 8.
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| CN111739452B (en) * | 2020-06-16 | 2022-06-07 | 深圳市华星光电半导体显示技术有限公司 | Method and device for debugging dark state voltage of liquid crystal display panel and storage medium |
| CN112885303B (en) * | 2021-01-22 | 2022-08-16 | 绵阳京东方光电科技有限公司 | Image quality optimization method and image quality optimization module |
| CN113035112B (en) * | 2021-03-25 | 2022-05-17 | 昆山国显光电有限公司 | Driving method of display panel, driving chip and display device |
| CN113593474B (en) * | 2021-07-28 | 2023-04-04 | 昆山国显光电有限公司 | Gamma debugging method, display driving chip and display device |
| CN114783346A (en) * | 2022-05-10 | 2022-07-22 | 云谷（固安）科技有限公司 | Gamma debugging method, device, equipment and storage medium |
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