CN110675823A - Brightness adjusting method of AMOLED display panel - Google Patents
Brightness adjusting method of AMOLED display panel Download PDFInfo
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- CN110675823A CN110675823A CN201910944878.3A CN201910944878A CN110675823A CN 110675823 A CN110675823 A CN 110675823A CN 201910944878 A CN201910944878 A CN 201910944878A CN 110675823 A CN110675823 A CN 110675823A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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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
Abstract
The invention provides a brightness adjusting method of an AMOLED display panel, relates to the technical field of display, and aims to solve the technical problem that the brightness during adjustment is different from the actual displayed brightness. The brightness adjusting method of the AMOLED display panel comprises the following steps: adjusting Gamma values corresponding to all gray scale values according to an initial Gamma value curve of a full gray scale value image to obtain an adjusted Gamma value curve, wherein the brightness corresponding to all the gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all the gray scale values in a theoretical Gamma value curve, the Gamma value corresponding to all the gray scale values in the full gray scale value image is adjusted, the influence of voltage drop on the Gamma values corresponding to all the gray scale values is the same, and the brightness corresponding to all the gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all the gray scale values in the actual Gamma value curve.
Description
Technical Field
The invention relates to the technical field of display, in particular to a brightness adjusting method of an AMOLED display panel.
Background
With the development of semiconductor technology, Active-matrix organic light emitting diode (AMOLED) display panels have been widely used due to their advantages of wider color gamut, higher contrast, thinner size, lower power consumption, etc.
In order to improve the display effect, the Gamma value of the AMOLED display panel is generally required to be adjusted before leaving a factory, in the prior art, an image displayed by the AMOLED display panel is divided into 0-255 pure gray scale images to be respectively adjusted, the brightness of the corresponding image is different under different gray scale values, correspondingly, the corresponding current is different under different gray scale values, and the voltage drop between different gray scale values is different; in the actual display process of the AMOLED display panel, the voltage drop between the gray scale values is the same, which causes the deviation between the adjusted brightness and the actual displayed brightness by adopting the Gamma value adjusting method.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a method for adjusting luminance of an AMOLED display panel, which is used to eliminate a deviation between luminance at the time of adjustment and luminance actually displayed.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
the embodiment of the invention provides a brightness adjusting method of an AMOLED display panel, which comprises the following steps:
acquiring initial brightness of each gray scale value in a full gray scale value image, and acquiring an initial Gamma value curve according to each initial brightness;
obtaining a theoretical Gamma value curve of each gray scale value in a full gray scale value image;
and adjusting the Gamma values corresponding to the gray-scale values respectively according to the initial Gamma value curve to obtain an adjusted Gamma value curve, wherein the brightness corresponding to each gray-scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray-scale value in the theoretical Gamma value curve.
Compared with the prior art, the method for adjusting the brightness of the AMOLED display panel provided by the embodiment of the invention has the following advantages:
in the brightness adjustment method for the AMOLED display panel according to the embodiment of the present invention, the initial brightness of each gray scale value in a full gray scale value image is obtained, an initial Gamma value curve is obtained according to each initial brightness, a theoretical Gamma value curve of each gray scale value in the full gray scale value image is obtained, the Gamma values corresponding to each gray scale value are adjusted according to the initial Gamma value curve, an adjusted Gamma value curve is obtained, and the brightness corresponding to each gray scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray scale value in the theoretical Gamma value curve. Adjusting Gamma values corresponding to all gray scale values in the same full gray scale value image, wherein the current in the same full gray scale value image is the same, the voltage drop has the same influence on the Gamma values corresponding to all gray scale values, the obtained adjusted Gamma value curve is consistent with the actual Gamma value curve obtained when the AMOLED display panel displays the image under the influence of the voltage drop, when the brightness corresponding to all gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all gray scale values in the theoretical AMOLED value curve, because the brightness corresponding to all gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all gray scale values in the actual Gamma value curve, the brightness corresponding to all gray scale values in the actual Gamma value curve is the same as the brightness corresponding to all gray scale values in the theoretical Gamma value curve, when the AMOLED display panel displays the image, the brightness at the high gray scale position is consistent with the brightness during adjustment, and the brightness at the low gray scale position is consistent with the brightness during adjustment, the display effect of the AMOLED display panel is improved.
As an improvement of the brightness adjustment method of the AMOLED display panel according to the embodiment of the present invention, the step of obtaining the initial brightness of each gray scale value in a full gray scale value image and obtaining the initial Gamma value curve according to each initial brightness includes:
dividing a full gray scale value image into a plurality of full gray scale units;
acquiring the actual brightness of each gray scale value in each full gray scale unit;
obtaining initial brightness corresponding to the gray scale value according to actual brightness respectively corresponding to the same gray scale value in a plurality of full gray scale units;
and obtaining an initial Gamma value curve according to the initial brightness.
As an improvement of the brightness adjustment method of the AMOLED display panel according to the embodiment of the present invention, the step of obtaining the initial brightness of each gray scale value in a full gray scale value image and obtaining the initial Gamma value curve according to each initial brightness includes:
dividing a full gray scale value image into a plurality of full gray scale units;
dividing all gray scale values in each full gray scale unit into n groups, wherein n is an integer greater than or equal to 2, each group comprises at least two continuous gray scale values, and the maximum gray scale value in the upper group in two adjacent groups is different from the minimum gray scale value in the lower group;
acquiring actual brightness corresponding to each group of maximum gray-scale values;
obtaining initial brightness corresponding to the group according to actual brightness corresponding to the same group in the full gray scale units;
and obtaining an initial Gamma value curve according to each initial brightness.
As an improvement of the brightness adjustment method of the AMOLED display panel according to the embodiment of the present invention, each full gray scale unit corresponds to one lighting module, and the lighting module is used for enabling the full gray scale unit to realize full gray scale display.
As an improvement of the brightness adjusting method of the AMOLED display panel according to the embodiment of the invention, the pixels in each full gray scale unit are arranged in a row or a column, and the gray scale values of the pixels in each row or each column are sequentially increased or decreased.
As an improvement of the brightness adjustment method of the AMOLED display panel according to the embodiment of the present invention, the arrangement of the pixels in each full gray scale unit is the same, and the gray scale value variation modes corresponding to the pixels in each full gray scale unit are the same.
As an improvement of the brightness adjusting method of the AMOLED display panel in the embodiment of the invention, the Gamma value corresponding to the theoretical Gamma value curve is larger than 1.8 and smaller than 2.5.
As an improvement of the brightness adjusting method of the AMOLED display panel in the embodiment of the invention, the Gamma value corresponding to the theoretical Gamma value curve is equal to 2.2.
As an improvement of the brightness adjusting method of the AMOLED display panel in the embodiment of the invention, a camera or a camera is adopted to acquire the actual brightness of the gray-scale value.
As an improvement of the brightness adjustment method of the AMOLED display panel according to the embodiment of the present invention, the step of adjusting the Gamma values corresponding to the gray-scale values according to the initial Gamma value curve to obtain the adjusted Gamma value curve includes:
each gray scale value of a full gray scale value image is binarized into digital information;
storing the digital information and the initial brightness corresponding to each gray scale value in a control register;
storing the binary digital information corresponding to each gray scale value in the theoretical Gamma value curve and the theoretical brightness corresponding to each gray scale value in a control register;
obtaining Gamma values respectively corresponding to the gray scale values according to the initial brightness and the theoretical brightness respectively corresponding to the gray scale values;
and obtaining an adjustment Gamma value curve according to the Gamma values respectively corresponding to the gray scale values.
In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the method for adjusting luminance of an AMOLED display panel according to the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a brightness adjustment method of an AMOLED display panel according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a brightness adjustment method of an AMOLED display panel according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a display effect of a full gray scale image according to an embodiment of the present invention.
Description of reference numerals:
10: a full gray scale cell.
Detailed Description
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When the Gamma value of the AMOLED display panel is adjusted, the Gamma values corresponding to different gray scale values need to be adjusted respectively so as to display a better display effect. Specifically, there are X gray scale values, and the Gamma values of the X sub-pure gray scale images are respectively adjusted, the gray scale values of the pixel points in each pure gray scale image are all the same, and each sub-pure gray scale image has different gray scale values. And adjusting the Gamma value aiming at the gray value corresponding to each image to obtain an adjusted Gamma value curve, wherein the brightness corresponding to each gray value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray value in the theoretical Gamma value curve.
When the Gamma value is adjusted, the higher the gray scale value is, the larger the current is, at this time, the larger the power supply voltage drop of the AMOLED is, the larger the influence of the voltage drop on the brightness is, and when the gray scale value is, the smaller the current is, at this time, the smaller the power supply voltage drop of the AMOLED is, the smaller the influence of the voltage drop on the brightness is, that is, in the obtained adjusted Gamma value curve, the brightness adjusted at different gray scale values is affected differently by the voltage drop.
However, when an image is actually displayed, the image includes a plurality of pixel points, the gray scale value corresponding to each pixel point is usually different, the same current is used in the same image, the voltage drop caused by the current is the same, the voltage drop has the same influence on the actually displayed brightness of different gray scale values, and the brightness corresponding to each gray scale value in the actual Gamma value curve when the AMOLED displays the image is different from the brightness corresponding to each gray scale value in the adjusted Gamma value curve, which is expressed as: the actual brightness of the pixel point with the high gray scale value is brighter than the adjusted brightness corresponding to the adjusted Gamma value, while the actual brightness of the pixel point with the low gray scale value is darker than the adjusted brightness corresponding to the adjusted Gamma value, so that the actual display effect of the image cannot reach the theoretical display effect, and the display effect is poor.
Take an example as an exampleAs shown in table one, the image displayed on the AMOLED display panel is divided into 0 to 255 pure gray-scale images for adjustment, the gray-scale values are 0, 1, 2, 3 … … 252, 253, 254, and 255, and the brightness value corresponding to each gray-scale value during adjustment is a0、A1、A2、A3……A252、A253、A254、A255During adjustment, the Gamma value corresponding to each gray level value is influenced by the voltage drop as U0、U1、U2、U3……U252、U253、U254、U255When displaying, the brightness value corresponding to each gray level is G0、G1、G2、G3……G252、G253、G254、G255The Gamma value corresponding to each gray scale value is influenced by the voltage drop u0、u1、u2、u3……u252、u253、u254、u255。
Table one:
in the first table, since the adjustment of the Gamma value is performed in different pure gray scale images, the gray scale values 0, 1, 2, 3 … … 252, 253, 254, and 255 of the different images are different, and the luminance value a corresponding to each gray scale value at the time of adjustment is different0、A1、A2、A3……A252、A253、A254、A255Unequal brightness causes the voltage drop influence U on the Gamma value corresponding to each gray level value during adjustment0、U1、U2、U3……U252、U253、U254、U255When the gray scale values are not equal to each other, in actual display, because each gray scale value is in the same full gray scale value image, the Gamma value corresponding to each gray scale value is influenced by the voltage drop u in the same full gray scale value image0、u1、u2、u3……u252、u253、u254、u255Equality, resulting in a difference between the luminance value corresponding to each gray level value when displayed and the luminance value corresponding to each gray level value when adjusted, i.e. G0And A0、G1And A1、G2And A2G3 and A3… … i.e. G252And A252I.e. G253And A253I.e. G254And A254I.e. G255And A255Are all different.
In order to eliminate the deviation between the brightness during adjustment and the actually displayed brightness, as shown in fig. 1, an embodiment of the present invention provides a brightness adjustment method for an AMOLED display panel, where the brightness adjustment method includes:
acquiring initial brightness of each gray scale value in a full gray scale value image, and acquiring an initial Gamma value curve according to each initial brightness;
in a specific example, the number of each gray scale value in the full gray scale value image is 256, and the specific gray scale values are 0, 1, 2, 3 … … 252, 253, 254, 255.
Obtaining a theoretical Gamma value curve of each gray scale value in a full gray scale value image;
in a specific example, the Gamma value corresponding to the theoretical Gamma value curve is greater than 1.8 and less than 2.5. Specifically, the Gamma value corresponding to the theoretical Gamma value curve is equal to 2.2.
In a specific example, the Gamma value is equal to 2.2, the gray scale values are 0, 1, 2, 3 … … 252, 253, 254 and 255, the maximum luminance of the AMOLED display panel is 600nit, and then when the gray scale value is 255, the corresponding luminance is 600nit, when the gray scale value is 0, the corresponding luminance is 0nit, when the gray scale value is m, m is an integer greater than 0 and less than 255, and the corresponding luminance is 600 ^2.2 (m/255).
And adjusting the Gamma values corresponding to the gray scale values respectively according to the initial Gamma value curve to obtain an adjusted Gamma value curve, wherein the brightness corresponding to each gray scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray scale in the theoretical Gamma value curve.
In a specific example, the step of adjusting the Gamma values corresponding to the gray-scale values according to the initial Gamma value curve to obtain an adjusted Gamma value curve includes:
each gray scale value of a full gray scale value image is binarized into digital information;
the binarization of each gray scale value of a full gray scale value image is to set the gray scale value of a pixel point on the image to be 0 or 255, namely to make the whole image show an obvious black-white effect, and the process can greatly reduce the data volume in the image so as to highlight the outline of a target.
Storing the digital information and the initial brightness corresponding to each gray scale value in a control register;
storing the binary digital information corresponding to each gray scale value in the theoretical Gamma value curve and the theoretical brightness corresponding to each gray scale value in a control register;
obtaining Gamma values respectively corresponding to the gray scale values according to the initial brightness and the theoretical brightness respectively corresponding to the gray scale values;
and obtaining an adjustment Gamma value curve according to the Gamma values respectively corresponding to the gray scale values.
In the above embodiments of the present invention, the order of obtaining the initial Gamma curve and the order of obtaining the theoretical Gamma curve are not specifically limited.
The brightness adjusting method of the AMOLED display panel of the embodiment of the invention adjusts the Gamma value corresponding to each gray scale value in the same full gray scale value image, the current in the same full gray scale value image is the same, the voltage drop has the same influence on the Gamma value corresponding to each gray scale value, the obtained adjusted Gamma value curve is consistent with the actual Gamma value curve obtained when the AMOLED display panel displays the image under the influence of the voltage drop, when the brightness corresponding to each gray scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray scale in the theoretical Gamma value curve, because the brightness corresponding to each gray scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray scale in the actual Gamma value curve, the brightness corresponding to each gray scale value in the actual Gamma value curve is the same as the brightness corresponding to each gray scale in the theoretical Gamma value curve, when the AMOLED display panel displays the image, the brightness of the high gray scale value position is consistent with the brightness during adjustment, the brightness of the low gray-scale value position is consistent with the brightness during adjustment, and the display effect of the AMOLED display panel is improved.
In a specific embodiment, the step of obtaining the initial brightness of each gray scale value in a full gray scale value image and obtaining the initial Gamma value curve according to each initial brightness includes:
dividing a full gray scale image into a plurality of full gray scale units 10;
in a specific example, each full-grayscale unit 10 corresponds to a lighting module, and the lighting module is configured to enable the full-grayscale unit 10 to achieve full-grayscale display.
In a specific example, the resolution of the AMOLED display panel is X × Y, the number of gray scale values in the full gray scale value image is 256, and each full gray scale unit 10 has a size of X × Y/256.
In a specific example, the pixels in each full gray scale unit 10 are arranged in a row or a column, and the gray scale values of the pixels in each row or each column become larger or smaller in turn. More specifically, the pixels in each full-gray-scale unit 10 are arranged in the same manner, and the gray-scale values of the pixels in each full-gray-scale unit 10 are changed in the same manner.
Obtaining the actual brightness of each gray scale value in each full gray scale unit 10;
in a specific example, a camera or a video camera is used to capture the actual brightness of the gray scale value.
Obtaining initial brightness corresponding to the gray scale value according to actual brightness respectively corresponding to the same gray scale value in the full gray scale units 10;
and obtaining an initial Gamma value curve according to the initial brightness.
In another specific embodiment, the step of obtaining the initial brightness of each gray scale value in a full gray scale value image and obtaining the initial Gamma value curve according to each initial brightness includes:
dividing a full gray scale image into a plurality of full gray scale units 10;
in a specific example, each full-grayscale unit 10 corresponds to a lighting module, and the lighting module is configured to enable the full-grayscale unit 10 to achieve full-grayscale display.
In a specific example, as shown in fig. 2, the pixels in each full gray scale unit 10 are arranged in a row or a column, and the gray scale values of the pixels in each row or each column become larger or smaller in turn. More specifically, the pixels in each full-gray-scale unit 10 are arranged in the same manner, and the gray-scale values of the pixels in each full-gray-scale unit 10 are changed in the same manner.
Dividing all gray scale values in each full gray scale unit 10 into n groups, wherein n is an integer greater than or equal to 2, each group comprises at least two continuous gray scale values, and the maximum gray scale value in the upper group in the two adjacent groups is different from the minimum gray scale value in the lower group;
acquiring actual brightness corresponding to each group of maximum gray-scale values;
in a specific example, a camera or a video camera is used to capture the actual brightness of the gray scale value.
Obtaining initial brightness corresponding to the group according to actual brightness corresponding to the same group in the full gray scale units 10;
and obtaining an initial Gamma value curve according to each initial brightness.
When the Gamma values are actually adjusted, that is, an image only including n gray-scale values is used to replace the full gray-scale value image, as shown in fig. 2, n is 85, the display effect of the corresponding AMOLED display panel is as shown in fig. 3, the n gray-scale values are respectively the maximum gray-scale value of each of the n groups, the Gamma values corresponding to the n gray-scale values in the image only including the n gray-scale values are adjusted, and the difference between the adjusted Gamma values in the image with the n gray-scale values and the adjusted Gamma values in the full gray-scale value image is that in the full gray-scale value image, the Gamma values corresponding to the gray-scale values are adjusted, and in the image with the n gray-scale values, the Gamma values corresponding to the n gray-scale values are adjusted. In the image with n gray scale values, the Gamma value adjustment corresponding to the n gray scale values has the advantages of reducing the calculated amount of the Gamma curve and quickening the Gamma adjustment speed.
In the brightness adjustment method for the AMOLED display panel according to the embodiment of the present invention, the initial brightness of each gray scale value in a full gray scale value image is obtained, an initial Gamma value curve is obtained according to each initial brightness, a theoretical Gamma value curve of each gray scale value in the full gray scale value image is obtained, the Gamma values corresponding to each gray scale value are adjusted according to the initial Gamma value curve, an adjusted Gamma value curve is obtained, and the brightness corresponding to each gray scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray scale value in the theoretical Gamma value curve. Adjusting Gamma values corresponding to all gray scale values in the same full gray scale value image, wherein the current in the same full gray scale value image is the same, the voltage drop has the same influence on the Gamma values corresponding to all gray scale values, the obtained adjusted Gamma value curve is consistent with the actual Gamma value curve obtained when the AMOLED display panel displays the image under the influence of the voltage drop, when the brightness corresponding to all gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all gray scale values in the theoretical AMOLED value curve, because the brightness corresponding to all gray scale values in the adjusted Gamma value curve is the same as the brightness corresponding to all gray scale values in the actual Gamma value curve, the brightness corresponding to all gray scale values in the actual Gamma value curve is the same as the brightness corresponding to all gray scale values in the theoretical Gamma value curve, when the AMOLED display panel displays the image, the brightness at the high gray scale position is consistent with the brightness during adjustment, and the brightness at the low gray scale position is consistent with the brightness during adjustment, the display effect of the AMOLED display panel is improved.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A brightness adjusting method of an AMOLED display panel is characterized by comprising the following steps:
acquiring initial brightness of each gray scale value in a full gray scale value image, and acquiring an initial Gamma value curve according to each initial brightness;
obtaining a theoretical Gamma value curve of each gray scale value in the full gray scale value image;
and adjusting the Gamma values corresponding to the gray-scale values respectively according to the initial Gamma value curve to obtain an adjusted Gamma value curve, wherein the brightness corresponding to each gray-scale value in the adjusted Gamma value curve is the same as the brightness corresponding to each gray-scale value in the theoretical Gamma value curve.
2. The method of claim 1, wherein obtaining initial brightness of each gray scale value in a full gray scale value image, and obtaining an initial Gamma value curve according to each initial brightness comprises:
dividing one full gray scale value image into a plurality of full gray scale units;
acquiring the actual brightness of each gray scale value in each full gray scale unit;
obtaining initial brightness corresponding to the gray scale value according to actual brightness respectively corresponding to the same gray scale value in the full gray scale units;
and obtaining an initial Gamma value curve according to the initial brightness.
3. The method of claim 1, wherein obtaining initial brightness of each gray scale value in a full gray scale value image, and obtaining an initial Gamma value curve according to each initial brightness comprises:
dividing one full gray scale value image into a plurality of full gray scale units;
dividing all gray scale values in each full gray scale unit into n groups, wherein n is an integer greater than or equal to 2, each group comprises at least two continuous gray scale values, and the maximum gray scale value in the upper group in the two adjacent groups is different from the minimum gray scale value in the lower group;
acquiring actual brightness corresponding to each group of maximum gray-scale values;
obtaining initial brightness corresponding to the group according to actual brightness corresponding to the same group in the full gray scale units;
and obtaining an initial Gamma value curve according to each initial brightness.
4. The method for adjusting the brightness of the AMOLED display panel as claimed in claim 2 or 3, wherein each full-gray-scale unit corresponds to a lighting module, and the lighting module is used for enabling the full-gray-scale unit to realize full-gray-scale display.
5. The method of adjusting brightness of an AMOLED display panel as claimed in claim 2 or 3, wherein the pixels in each full gray scale unit are arranged in a row or a column, and the gray scale values of the pixels in each row or each column are sequentially increased or decreased.
6. The method of claim 5, wherein the pixels in each full grayscale unit are arranged in the same manner, and the gray scale values of the pixels in each full grayscale unit are varied in the same manner.
7. The method for adjusting the brightness of the AMOLED display panel as claimed in claim 1, wherein the Gamma value corresponding to the theoretical Gamma value curve is greater than 1.8 and less than 2.5.
8. The method of adjusting brightness of an AMOLED display panel of claim 7, wherein the Gamma value corresponding to the theoretical Gamma value curve is equal to 2.2.
9. The method for adjusting the brightness of the AMOLED display panel as claimed in claim 2 or 3, wherein a camera or a video camera is used to capture the actual brightness of the gray scale values.
10. The method of claim 1, wherein the step of adjusting the Gamma values corresponding to the gray-scale values according to the initial Gamma value curve to obtain an adjusted Gamma value curve comprises:
binarizing each gray scale value of the full gray scale value image into digital information;
storing the digital information and the initial brightness corresponding to each gray scale value in a control register;
storing the binary digital information corresponding to each gray scale value in the theoretical Gamma value curve and the theoretical brightness corresponding to each gray scale value in the control register;
obtaining Gamma values respectively corresponding to the gray scale values according to the initial brightness and the theoretical brightness respectively corresponding to the gray scale values;
and obtaining an adjustment Gamma value curve according to the Gamma values respectively corresponding to the gray scale values.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910944878.3A CN110675823A (en) | 2019-09-30 | 2019-09-30 | Brightness adjusting method of AMOLED display panel |
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