CN108962126B - Display panel driving method and system and display device comprising same - Google Patents
Display panel driving method and system and display device comprising same Download PDFInfo
- Publication number
- CN108962126B CN108962126B CN201811148754.6A CN201811148754A CN108962126B CN 108962126 B CN108962126 B CN 108962126B CN 201811148754 A CN201811148754 A CN 201811148754A CN 108962126 B CN108962126 B CN 108962126B
- Authority
- CN
- China
- Prior art keywords
- gray scale
- brightness
- displayed
- display information
- duty ratio
- 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.)
- Active
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
-
- 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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The embodiment of the application provides a display panel driving method, which is characterized in that the display panel is provided with at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness; the driving method includes: receiving a picture to be displayed; calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed; and generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding sub-pixels. Contain the different luminance gamma curves of multiunit correspondence in this application to treat the luminance information call of display frame corresponding gamma curve, make display panel's color degree of accuracy high, prevent that display panel from appearing the condition of off colour.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of display technologies, and in particular, to a display panel driving method and driving system and a display device including the same.
[ background of the invention ]
The prior art typically uses the adjustment data signal to adjust the luminance of the sub-pixels and then displays the color by the ratio of the three sub-pixel luminances red, green and blue. In the case of low brightness, noise usually occurs to greatly reduce the display effect, which affects the use experience of the consumer and cannot be accepted by the customer. The inventors have found that by adjusting the duty cycle to adjust the brightness, noise is avoided. But at the same time, the color shifts significantly, resulting in inaccurate displayed colors.
[ summary of the invention ]
In view of the above, embodiments of the present invention provide a driving method to solve the above technical problems.
In one aspect, an embodiment of the present application provides a method for driving a display panel, where the display panel has at least three sets of gamma curves, and the maximum gray scale of each set of gamma curves corresponds to different brightness; the driving method includes: receiving a picture to be displayed; calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed; and generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding sub-pixels.
In another aspect, an embodiment of the present application provides a driving system for a display panel, including: the storage module is used for storing at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness; the receiving module is used for receiving a picture to be displayed; the gamma calling module is used for calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed; and the display information generation module is used for generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding sub-pixels.
In another aspect, the present application provides a display device, which is characterized by comprising the driving system.
The display panel comprises a plurality of groups of gamma curves corresponding to different brightness, and the brightness information of the picture to be displayed calls the corresponding gamma curves, so that the color accuracy of the display panel is high, and the display panel is prevented from color cast;
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a diagram illustrating a luminance variation value of a prior art display panel with a threshold variation;
FIG. 2 is a diagram illustrating brightness variation with gray scale of a prior art display panel;
FIG. 3 is a diagram illustrating the variation of white luminance with gray scale of a prior art display panel;
FIG. 4 is a schematic diagram of a prior art display panel showing white color coordinates varying with gray scale;
FIG. 5 is a schematic diagram of a gamma curve in one embodiment of the present application;
FIG. 6 is a schematic diagram of a driving method in one embodiment of the present application;
FIG. 7 is a schematic diagram of a driving method in another embodiment of the present application;
FIG. 8 is a schematic diagram of a driving method in yet another embodiment of the present application;
FIG. 9 is a schematic illustration of a driving method in yet another embodiment of the present application;
FIG. 10 is a schematic diagram of a duty cycle signal in one embodiment of the present application;
FIG. 11 is a schematic illustration of a driving method in yet another embodiment of the present application;
FIG. 12 is a schematic illustration of a driving method in yet another embodiment of the present application;
FIG. 13 is a schematic illustration of a driving method in yet another embodiment of the present application;
FIG. 14 is a schematic illustration of a driving method in yet another embodiment of the present application;
FIG. 15 is a schematic view of a drive system in one embodiment of the present application;
FIG. 16 is a schematic diagram of a driving method in another embodiment of the present application;
fig. 17 is a schematic view of a display device in an embodiment of the present application.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some 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.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used to describe the preset grayscale values in the embodiments of the present invention, the grayscale values should not be limited to these terms. These terms are only used to distinguish the electrodes from each other. For example, the first gray scale value may also be referred to as the second gray scale value, and similarly, the second gray scale value may also be referred to as the first gray scale value without departing from the scope of embodiments of the present invention.
In the prior art, the data signal is usually used to adjust the gray-scale brightness, but the brightness is greatly influenced by the threshold voltage shift at the time of low gray-scale. Referring to fig. 1 and table 1, fig. 1 is a schematic diagram illustrating a luminance variation value of a display panel according to a prior art varying with a threshold value;
it can be seen that the current variation values are 2.09% and 3.77% when the threshold voltage variation value is 0.1v at the 255 th gray scale, that is, the maximum luminance, and 6.90% when the threshold voltage variation value is 0.1v at the 31 st gray scale, which is 2-3 times of the 255 th gray scale. That is, in low gray scale, the shift of threshold voltage is more likely to cause the fluctuation of brightness, and the color of individual pixels is abrupt due to the fluctuation, which is a reason that noise is easily generated in low gray scale.
To solve the noise problem at low gray scales, the brightness can be adjusted by adjusting the duty ratio. In detail, please refer to fig. 10, fig. 10 is a schematic diagram of a duty cycle signal according to an embodiment of the present application; in the PMOS type pixel circuit, the emission control signal Emit is turned on at a low level and turned off at a high level. In the normal display mode, the emission control signal is Emit2, and in a frame, except for the compensation phase, the remaining time is low level, and the pixel controlled by the emission control signal is in the emission phase. Since the human eye perceives the integrated value of the luminance, reducing the time for emitting the light can reduce the luminance perceived by the human eye, which is equivalent to reducing the luminance. In order to display the luminance of the low gray scale, the duty ratio of the emission control signal may be reduced, for example, as shown in the emission control signal Emit1, four periods are included in one frame, each period includes 50% of the time of the low level and the high level, the total duty ratio of the emission control signal Emit is 50%, and thus the luminance may be reduced by 50%. The problem of noise under low gray scale is solved. However, the use of duty ratio to adjust the brightness can cause color deviation, please refer to fig. 2, fig. 3 and fig. 4, fig. 2 is a schematic diagram of the brightness of the display panel of the prior art varying with the gray scale; FIG. 3 is a diagram illustrating the variation of white luminance with gray scale of a prior art display panel; FIG. 4 is a schematic diagram of a prior art display panel showing white color coordinates varying with gray scale; note that the ordinate in fig. 2 is a percentage of luminance, and the ordinate in fig. 3 is a luminance value.
Referring to fig. 2, the gamma curve is close to the gamma curve when the gamma is 2.2 under normal conditions. In the figure, 51 code 40 is a gray scale curve obtained by adjusting the brightness with an Emit duty ratio based on 40 gray scales. It can be seen that the gray scale curve deviates greatly from the gamma curve under normal conditions, and is closer to the gray scale curve with gamma of 2.5. With continued reference to fig. 4 and fig. 5, the x and y values of the color coordinates deviate from 0.29 between the 20 th and 30 th gray levels, i.e. the color deviates significantly, and the color returns to normal after the 30 th gray level is known. Therefore, the use of duty ratio to adjust the luminance causes a problem of color deviation.
Please refer to fig. 5 and 6, wherein fig. 5 is a schematic diagram of a gamma curve according to an embodiment of the present disclosure; FIG. 6 is a schematic diagram of a driving method in one embodiment of the present application;
the display panel is provided with at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness;
the driving method includes:
receiving a picture to be displayed;
calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed;
and generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding sub-pixels.
The display panel comprises at least three groups of gamma curves, and the corresponding gamma curves are called according to the maximum brightness of a picture to be displayed, so that color deviation caused by the fact that the same gamma curves are used under different brightness can be avoided. For example, referring to fig. 5, the display panel of the present application includes gamma curves established according to three different groups of basic luminances 200nit, 350nit and 430nit, and when the luminance corresponding to the maximum gray level in the to-be-displayed picture is 400nit, the gamma curve corresponding to 430nit is also selected. Therefore, each picture to be displayed can call the most appropriate gamma curve, so that the color accuracy can be ensured under any brightness.
In an embodiment of the present application, please further refer to fig. 5 and 7, fig. 7 is a schematic diagram of a driving method in another embodiment of the present application;
the display panel comprises at least three groups of gamma curves C1、C2……CkThe brightness corresponding to the corresponding maximum gray scale is L1、L2……LkWherein K is an integer and is not less than 3;
the foregoing invoking of the corresponding gamma curve according to the maximum brightness in the picture to be displayed specifically includes:
judging the highest brightness sub-pixel of the picture to be displayed; the target brightness of the highest brightness sub-pixel is Lt
When L isi＜Lt≤Li+1Calling the brightness corresponding to the maximum gray scale to be Li+1Wherein i is more than or equal to 1 and less than or equal to k, and i is an integer;
when L ist＞LkCalling the brightness corresponding to the maximum gray scale to be LkThe gamma curve of (2).
Please refer to fig. 5, which includes C1、C2And C3Three sets of gamma curves with corresponding maximum brightness of 200nit, 350nit and 430nit, when the target brightness L of the sub-pixel with the highest brightness in the picture to be displayed istAt 450nit, which is the highest brightness (430 nit in the example) than the corresponding maximum brightness in any set of gamma curves, gamma curve C is called3(ii) a When the target brightness L of the sub-pixel with the highest brightness in the picture to be displayedtAt 300nit, the gamma curve C is called when 200nit < 300nit < 350nit2(ii) a Therefore, each picture to be displayed can call the most appropriate gamma curve, so that the color accuracy can be ensured under any brightness. And when the maximum brightness of the sub-pixels of the picture to be displayed is between the brightness corresponding to the maximum gray scale of the two gamma curves, the gamma curve with the maximum brightness larger than that of the sub-pixels of the picture to be displayed is selected, so that the brightness of the sub-pixels can be ensured not to overflow to the maximum extent. When the maximum brightness of the sub-pixels of the picture to be displayed is higher than the brightness corresponding to the maximum gray scale of the gamma curve, the gamma curve with the highest maximum brightness is selected, and all the sub-pixels of the picture to be displayed can be displayed to the maximum extent.
The gamma curves are relatively close when the brightness is close, but the color shift is relatively serious when the brightness difference is relatively large. For example, if the brightness of the three sets of gamma curves included in the display panel is 250nit, 260nit and 270nit, respectively, a severe color deviation still occurs when the high brightness is displayed at 400nit and the low brightness is displayed at 20 nit.
Thus, in this embodiment. Any two groups C of at least three groups of gamma curvesp、CqThe brightness corresponding to the corresponding maximum gray scale is Lp、LqWherein p and q are integers, and k is not more than p and q; lp-Lq|≥100nit。
This allows fewer gamma curves to be used to match a larger luminance range, resulting in a display panel with relatively high color accuracy over the entire displayable luminance range.
Further, according to the foregoing analysis, the display problem at low luminance and the display problem at high luminance are different. Therefore, different dimming modes can be adopted according to the low brightness and the high brightness respectively. Referring to fig. 8, fig. 8 is a schematic diagram of a driving method in another embodiment of the present application;
before generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding pixels, the driving method of the application further comprises judging a brightness mode;
the judging the brightness mode comprises:
when the maximum brightness in the picture to be displayed is greater than the threshold brightness, determining that the display panel is in a medium-high brightness mode;
and when the maximum brightness in the picture to be displayed is less than the threshold brightness, determining that the display panel is in a low-brightness mode.
In this embodiment, the display mode of the display panel is divided into a medium-high brightness mode and a low brightness mode, and different dimming strategies are adopted for the medium-high brightness mode and the low brightness mode, so that the invocation of computing resources, the computing power consumption and the display effect can be comprehensively considered, and the two modes can achieve the optimal balance.
Illustratively, the threshold luminance may be 50 nit. The inventor of the present invention has found through a great deal of experimental studies that the brightness is higher than 50nit and lower than 50nit, and the dimming methods for balancing the display effect and the operation amount are different, so that the display mode of the display panel can be divided into the low brightness mode and the middle and high brightness mode with the 50nit as the boundary in this embodiment. It should be noted that the determination of the brightness mode must be completed before the corresponding display information is generated based on the corresponding gamma curve and transmitted to the corresponding pixel, so as to determine what brightness information is transmitted to the pixel. The order of judging the brightness mode and calling the corresponding gamma curves according to the maximum brightness of the display panel is not required to be fixed, the brightness mode can be judged before, the corresponding gamma curves can be called after, the corresponding gamma curves can also be called online, and the brightness mode can be judged after, or the brightness mode can be judged and the corresponding gamma curves can be called simultaneously. Particularly, the judgment of the brightness mode and the calling of the corresponding gamma curve are carried out based on the brightness of the pixels in the picture to be displayed, and the simultaneous operation of the brightness mode and the calling of the corresponding gamma curve can reduce the operation time and the operation amount.
When the brightness mode is determined to be the middle and high brightness mode, the present application provides two ways of displaying full gray scale information, as shown in fig. 9 and fig. 11, respectively; FIG. 9 is a schematic illustration of a driving method in yet another embodiment of the present application; FIG. 11 is a schematic illustration of a driving method in yet another embodiment of the present application;
in a first way, please refer to fig. 9,
when the display panel is determined to be in the medium and high brightness mode, generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding pixel specifically includes:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
Taking the first preset gray scale value of 40 gray scales as an example, when displaying a high gray scale in the middle and high brightness mode, for example, displaying 100 gray scales, selecting a corresponding gamma curve according to the brightness of the sub-pixel corresponding to the picture to be displayed, where each gray scale corresponds to a gray scale voltage (data voltage signal), when displaying 100 gray scales, calculating a data signal corresponding to 100 gray scales, where the data signal is a target voltage, and outputting the target voltage to the corresponding sub-pixel can enable the corresponding sub-pixel to output the corresponding brightness. And a low gray scale is displayed in the middle and high brightness mode, for example, a 20 gray scale is displayed. According to the above, the corresponding gamma curve has been selected, and the gamma curve has a brightness corresponding to 20 gray levels, assuming that the brightness is x nit, and the display information is the target voltage and the duty ratio signal. For example, the first preset gray scale value may be used as the reference gray scale, the corresponding voltage is the reference voltage, and the brightness of the first preset gray scale value is used as the reference brightness ynit. At this time, the reference voltage and the duty ratio signal x/y corresponding to the first preset gray scale value are output to the corresponding pixel to realize the display of the pixel. The duty ratio signal cannot be greater than 100%, and when the duty ratio signal is started to be used as the display signal at the high gray level, the duty ratio of the duty ratio signal at the low gray level is very low, which is easy to cause visual fatigue of human eyes.
In a second way, please refer to fig. 11,
when the display panel is determined to be in the medium and high brightness mode, the generating of the corresponding display information based on the corresponding gamma curve and the transmitting of the display information to the corresponding pixel are specifically as follows:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
In this embodiment, the second predetermined gray scale value is less than or equal to 15 gray scales, and the third predetermined gray scale value is between 20 gray scales and 100 gray scales. Taking the second preset gray scale value as 15 gray scales and the third preset gray scale value as 50 gray scales as an example, when displaying high gray scales in a middle and high brightness mode, for example, when displaying 100 gray scales, a corresponding gamma curve is selected according to the brightness of the sub-pixel corresponding to the picture to be displayed, each gray scale corresponds to a gray scale voltage (data voltage signal), when displaying 100 gray scales, a data signal corresponding to 100 gray scales is calculated, the data signal is a target voltage, and the target voltage is output to the corresponding sub-pixel, so that the corresponding sub-pixel can output the corresponding brightness. When displaying low gray scale in the middle and high brightness mode, for example, when displaying 10 gray scales, selecting a corresponding gamma curve according to the brightness of the sub-pixel corresponding to the picture to be displayed, each gray scale corresponding to a gray scale voltage (data voltage signal), when displaying 10 gray scales, calculating the data signal corresponding to the 10 gray scales, wherein the data signal is a target voltage, and outputting the target voltage to the corresponding sub-pixel can enable the corresponding sub-pixel to output the corresponding brightness. And when displaying the middle gray scale in the middle and high brightness mode, for example, displaying 20 gray scales. According to the above, the corresponding gamma curve has been selected, and the gamma curve has a brightness corresponding to 30 gray levels, and assuming that the brightness is x nit, the display information is the target voltage and the duty ratio signal. For example, the third preset gray scale value may be used as the reference gray scale, the corresponding voltage is the reference voltage, and the brightness of the third preset gray scale value is used as the reference brightness ynit. At this time, the reference voltage and the duty ratio signal x/y corresponding to the third preset gray scale value are output to the corresponding pixel to realize the display of the pixel. Compared with the previous embodiment, the present embodiment also adopts a mode of adjusting light only by using the data signal at the time of low gray scale, mainly the present scheme is applied to the medium and high brightness mode, and noise is not easy to occur even if the data signal is adopted for dimming at the time of low gray scale. But it does not use a duty cycle signal, which can prevent the color shift problem.
When the brightness mode is determined to be the low brightness mode, the present application provides three ways of displaying full gray scale information according to different gamma curve information possessed by the display panel, as shown in fig. 12, 13 and 14 respectively; FIG. 12 is a schematic illustration of a driving method in yet another embodiment of the present application; FIG. 13 is a schematic illustration of a driving method in yet another embodiment of the present application; FIG. 14 is a schematic illustration of a driving method in yet another embodiment of the present application;
in a first way, please refer to fig. 12,
when the display panel is determined to be in the low brightness mode, and the at least three groups of gamma curves include a group of gamma curve CjThe brightness corresponding to the maximum gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; the generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding pixel specifically includes:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
Taking the first preset gray scale value of 40 gray scales as an example, when displaying a high gray scale in the middle and high brightness mode, for example, displaying 100 gray scales, selecting a corresponding gamma curve according to the brightness of the sub-pixel corresponding to the picture to be displayed, where each gray scale corresponds to a gray scale voltage (data voltage signal), when displaying 100 gray scales, calculating a data signal corresponding to 100 gray scales, where the data signal is a target voltage, and outputting the target voltage to the corresponding sub-pixel can enable the corresponding sub-pixel to output the corresponding brightness. And a low gray scale is displayed in the middle and high brightness mode, for example, a 20 gray scale is displayed. According to the above, the corresponding gamma curve is selected, the gamma curve has the brightness corresponding to 20 gray levels, and the display information is the target voltage and the duty ratio signal at this time, assuming that the brightness is x nit. For example, the first preset gray scale value may be used as the reference gray scale, the corresponding voltage is the reference voltage, and the brightness of the first preset gray scale value is used as the reference brightness ynit. At this time, the reference voltage and the duty ratio signal x/y corresponding to the first preset gray scale value are output to the corresponding pixel to realize the display of the pixel. The duty ratio signal cannot be greater than 100%, and when the duty ratio signal is started to be used as the display signal at the high gray level, the duty ratio of the duty ratio signal at the low gray level is very low, which is easy to cause visual fatigue of human eyes. Meanwhile, in the embodiment, the gamma curve matched according to the brightness smaller than the threshold value is included, so that the problem of color cast caused by dimming by adopting a duty ratio signal under low brightness and low gray scale can be avoided, and the two purposes are achieved.
In a second way, please refer to fig. 13,
when the display panel is determined to be in the low brightness mode, and the at least three groups of gamma curves include a group of gamma curve CjThe brightness corresponding to the maximum gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; the generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding pixel specifically includes:
when the gray scale value to be displayed is any gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
Here, the reference voltage and the duty ratio signal may be transmitted to the corresponding pixel with the maximum gray scale as the reference gray scale and the voltage corresponding to the maximum gray scale as the reference voltage. For example, when displaying 100 gray levels, the luminance to be displayed corresponding to the gamma curve is x nit, the maximum gray level 255 gray level is the reference gray level, and the luminance is y nit, and then the reference voltage and the duty ratio signal x/y corresponding to the maximum gray level are output to the corresponding pixel, so as to realize the display of the pixel. At this time, because the brightness difference between the low gray scale and the high gray scale is not large in the low brightness mode, the duty ratio of the low gray scale is not particularly low even if the duty ratio signal is adopted in the high gray scale, and thus the problem of visual fatigue caused by the duty ratio can be avoided. Meanwhile, the present embodiment uses only the reference voltage and the duty ratio signal as the display signal, and can reduce the amount of calculation and power consumption. Meanwhile, in the embodiment, the gamma curve matched according to the brightness smaller than the threshold value is included, so that the problem of color cast caused by dimming by adopting a duty ratio signal under low brightness and low gray scale can be avoided.
In a third way, please refer to fig. 13,
when the display panel is determined to be in the low brightness mode, and any one of the at least three sets of gamma curves is determined to be in the low brightness modemThe brightness corresponding to the maximum gray scale is Lm，LmGreater than the threshold brightness, m is greater than or equal to 1 and less than or equal to k, and m is an integer; generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding pixels specifically comprises:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
In this embodiment, the second predetermined gray scale value is less than or equal to 15 gray scales, and the third predetermined gray scale value is between 20 gray scales and 100 gray scales. Taking the second preset gray scale value as 15 gray scales and the third preset gray scale value as 50 gray scales as an example, when displaying high gray scales in a middle and high brightness mode, for example, when displaying 100 gray scales, a corresponding gamma curve is selected according to the brightness of the sub-pixel corresponding to the picture to be displayed, each gray scale corresponds to a gray scale voltage (data voltage signal), when displaying 100 gray scales, a data signal corresponding to 100 gray scales is calculated, the data signal is a target voltage, and the target voltage is output to the corresponding sub-pixel, so that the corresponding sub-pixel can output the corresponding brightness. When displaying low gray scale in the middle and high brightness mode, for example, when displaying 10 gray scales, selecting a corresponding gamma curve according to the brightness of the sub-pixel corresponding to the picture to be displayed, each gray scale corresponding to a gray scale voltage (data voltage signal), when displaying 10 gray scales, calculating the data signal corresponding to the 10 gray scales, wherein the data signal is a target voltage, and outputting the target voltage to the corresponding sub-pixel can enable the corresponding sub-pixel to output the corresponding brightness. And when displaying the middle gray scale in the middle and high brightness mode, for example, displaying 20 gray scales. According to the above, the corresponding gamma curve is selected, the gamma curve has the brightness corresponding to 30 gray levels, and the display information is the target voltage and the duty ratio signal at this time, assuming that the brightness is x nit. For example, the third preset gray scale value may be used as the reference gray scale, the corresponding voltage is the reference voltage, and the brightness of the third preset gray scale value is used as the reference brightness ynit. At this time, the reference voltage and the duty ratio signal x/y corresponding to the third preset gray scale value are output to the corresponding pixel to realize the display of the pixel. In the embodiment, no corresponding gamma curve exists in the range of brightness smaller than the threshold value, so that color cast is caused by dimming with the duty ratio signal under low gray scale. For example, the manufacturer may use the dimming mode of the present embodiment when the required brightness of the night mode is 20nit instead of 5nit, so as to avoid generating noise.
Referring to fig. 15, fig. 15 is a schematic view of a driving system according to an embodiment of the present application;
the present application also discloses a driving system of a display panel,
the storage module is used for storing at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness;
the receiving module is used for receiving a picture to be displayed;
the gamma calling module is used for calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed;
and the display information generation module is used for generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding sub-pixels.
In the driving system of the display panel, the storage module comprises at least three groups of gamma curves, and the corresponding gamma curves are called according to the maximum brightness of the picture to be displayed, so that color deviation caused by the fact that the same gamma curves are used under different brightness can be avoided. For example, referring to fig. 5, the display panel of the present application includes gamma curves established according to three different groups of basic luminances 200nit, 350nit and 430nit, and when the luminance corresponding to the maximum gray level in the to-be-displayed picture is 400nit, the gamma curve corresponding to 430nit is also selected. Therefore, each picture to be displayed can call the most appropriate gamma curve, so that the color accuracy can be ensured under any brightness.
Further, please refer to fig. 16, fig. 16 is a schematic diagram of a driving method in another embodiment of the present application;
the driving system further comprises a brightness mode judging module, wherein the brightness mode judging module is used for confirming the brightness mode of the display panel according to the relation between the maximum brightness in the picture to be displayed and the threshold brightness, and specifically comprises the following steps: when the maximum brightness in the picture to be displayed is greater than the threshold brightness, determining that the display panel is in a medium-high brightness mode; when the maximum brightness in the picture to be displayed is smaller than the threshold brightness, determining that the display panel is in a low-brightness mode;
in this embodiment, the display mode of the display panel is divided into a medium-high brightness mode and a low brightness mode, and different dimming strategies are adopted for the medium-high brightness mode and the low brightness mode, so that the invocation of computing resources, the computing power consumption and the display effect can be comprehensively considered, and the two modes can achieve the optimal balance. It should be noted that the order of determining the brightness mode and calling the corresponding gamma curve according to the maximum brightness of the display panel is not required to be fixed, the brightness mode may be determined before, the corresponding gamma curve may be called after, the corresponding gamma curve may also be called online, and the brightness mode may be determined after, or the brightness mode may be determined and the corresponding gamma curve may be called simultaneously. Particularly, the judgment of the brightness mode and the calling of the corresponding gamma curve are carried out based on the brightness of the pixels in the picture to be displayed, and the simultaneous operation of the brightness mode and the calling of the corresponding gamma curve can reduce the operation time and the operation amount.
In the medium and high brightness mode:
when the brightness mode judging module judges that the display panel is in a medium and high brightness mode, the working process of the display information generating module is as follows:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels;
alternatively, the first and second electrodes may be,
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
In the low brightness mode, and the at least three groups of gamma curves of the storage module include a group of gamma curves CjThe brightness corresponding to the maximum gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; the working process of the display information generation module is as follows:
when the gray scale value to be displayed is larger than a first preset gray scale value, displaying information as a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to the gamma curve, and the target voltage is transmitted to the corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal together, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels;
alternatively, the first and second electrodes may be,
when the gray scale value to be displayed is any gray scale value, displaying information as a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed together according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
In the low brightness mode: any one group of gamma curve C in at least three groups of gamma curves of the storage modulemThe brightness corresponding to the maximum gray scale is Lm，LmGreater than the threshold brightness, m is greater than or equal to 1 and less than or equal to k, and m is an integer; the working process of the display information generation module is as follows:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, displaying information as a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to the gamma curve, and the target voltage is transmitted to the corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, displaying information as a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second predetermined gray scale is smaller than the third predetermined gray scale.
As mentioned above, the first predetermined gray scale value is 40 gray scales, the second predetermined gray scale value is less than or equal to 15 gray scales, and the third predetermined gray scale value is between 20 gray scales and 100 gray scales. The specific working process has been described above, and will not be described herein in detail.
The application also discloses a display device. The display device of the present application may be any device including the driving system as described above, including but not limited to a cellular phone 1000, a tablet computer, a display of a computer, a display applied to a smart wearable device, a display applied to a vehicle such as an automobile, and the like as shown in fig. 17. A display device comprising a driving system as comprised by the display disclosed in the present application is considered to fall within the scope of protection of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (15)
1. A display panel driving method is characterized in that the display panel is provided with at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness;
the driving method includes:
receiving a picture to be displayed;
calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed;
generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to corresponding sub-pixels;
before the generating of the corresponding display information based on the corresponding gamma curve and the transmitting of the display information to the corresponding pixel, the driving method further comprises judging a brightness mode;
the judging the brightness mode comprises:
when the maximum brightness in the picture to be displayed is greater than the threshold brightness, determining that the display panel is in a medium-high brightness mode;
when the maximum brightness in the picture to be displayed is smaller than the threshold brightness, determining that the display panel is in a low-brightness mode;
when the display panel is determined to be in the medium and high brightness mode, the generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding pixel specifically include:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels;
alternatively, the first and second electrodes may be,
when the display panel is determined to be in the medium and high brightness mode, the generating corresponding display information based on the corresponding gamma curve, and transmitting the display information to the corresponding pixel specifically include:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
2. The method for driving a display panel according to claim 1, wherein the at least three sets of gamma curves C1、C2……CkThe brightness corresponding to the corresponding maximum gray scale is L1、L2……LkWherein K is an integer and is not less than 3;
the calling of the corresponding gamma curve according to the maximum brightness in the picture to be displayed specifically comprises:
judging the highest brightness sub-pixel of the picture to be displayed; the target brightness of the highest brightness sub-pixel is Lt
When L isi＜Lt≤Li+1Calling the brightness corresponding to the maximum gray scale to be Li+1Wherein i is more than or equal to 1 and less than or equal to k, and i is an integer;
when L ist＞LkCalling the brightness corresponding to the maximum gray scale to be LkThe gamma curve of (2).
3. The method for driving a display panel according to claim 1, wherein the threshold luminance is 50 nit.
4. The method for driving a display panel according to claim 1,
when the display panel is determined to be in the low brightness mode, and the at least three groups of gamma curves include a group of gamma curve CjThe brightness corresponding to the maximum gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; the generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding pixel specifically includes:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
5. The method for driving a display panel according to claim 1,
when the display panel is determined to be in the low brightness mode, and the at least three groups of gamma curves include a group of gamma curve CjThe brightness corresponding to the maximum gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; generating a corresponding display based on the corresponding gamma curveDisplaying information, and transmitting the display information to corresponding pixels specifically are:
when the gray scale value to be displayed is any gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
6. The method for driving a display panel according to claim 1,
when the display panel is determined to be in the low brightness mode, and any one of the at least three sets of gamma curves CmThe brightness corresponding to the maximum gray scale is Lm，LmGreater than the threshold brightness, m is greater than or equal to 1 and less than or equal to k, and m is an integer; the generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding pixel specifically includes:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
7. The method for driving a display panel according to claim 1 or 4,
the first preset gray scale value is 40 gray scales.
8. The method for driving a display panel according to claim 1 or 4,
the second preset gray scale value is less than or equal to 15 gray scales,
the third predetermined gray scale value is between 20 gray scales and 100 gray scales.
9. The method according to claim 2, wherein any two groups C of the at least three groups of gamma curvesp、CqThe brightness corresponding to the corresponding maximum gray scale is Lp、LqWherein p and q are integers, and k is not more than p and q;
|Lp-Lq|≥100nit。
10. a driving system of a display panel, comprising:
the storage module is used for storing at least three groups of gamma curves, and the maximum gray scale of each group of gamma curves corresponds to different brightness;
the receiving module is used for receiving a picture to be displayed;
the gamma calling module is used for calling a corresponding gamma curve according to the maximum brightness in the picture to be displayed;
the display information generation module is used for generating corresponding display information based on the corresponding gamma curve and transmitting the display information to the corresponding sub-pixels;
the driving system further comprises a brightness mode judging module, wherein the brightness mode judging module is used for confirming the brightness mode of the display panel according to the relation between the maximum brightness in the picture to be displayed and the threshold brightness, and specifically comprises the following steps:
when the maximum brightness in the picture to be displayed is greater than the threshold brightness, determining that the display panel is in a medium-high brightness mode;
when the maximum brightness in the picture to be displayed is smaller than the threshold brightness, determining that the display panel is in a low-brightness mode;
when the brightness mode judging module judges that the display panel is in a medium and high brightness mode, the working process of the display information generating module is as follows:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels;
alternatively, the first and second electrodes may be,
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
11. The drive system of claim 10,
when the brightness mode judging module judges that the display panel is in a low brightness mode, and the at least three groups of gamma curves comprise a group of gamma curves CjWhich corresponds to the mostThe brightness corresponding to the large gray scale is Lj，LjJ is less than or equal to the threshold brightness, j is more than or equal to 1 and less than or equal to k, and j is an integer; the working process of the display information generation module is as follows:
when the gray scale value to be displayed is larger than a first preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is smaller than or equal to a first preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels;
alternatively, the first and second electrodes may be,
when the gray scale value to be displayed is any gray scale value, the display information is a target voltage and a duty ratio signal; and generating the brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching the reference voltage corresponding to the reference gray scale according to the gamma curve, and transmitting the reference voltage and the duty ratio signal to the corresponding pixel.
12. The drive system of claim 10,
when the brightness mode judging module judges that the display panel is in a low brightness mode, and any one group of gamma curves C in the at least three groups of gamma curvesmThe brightness corresponding to the maximum gray scale is Lm，LmGreater than the threshold brightness, m is greater than or equal to 1 and less than or equal to k, and m is an integer; the working process of the display information generation module is as follows:
when the gray scale value to be displayed is smaller than a second preset gray scale value or larger than a third preset gray scale value, the display information is a target voltage; the gray scale to be displayed is a target gray scale, a target voltage corresponding to the target gray scale is searched according to a gamma curve, and the target voltage is transmitted to a corresponding pixel;
when the gray scale value to be displayed is larger than the second preset gray scale and smaller than the third preset gray scale value, the display information is a target voltage and a duty ratio signal; generating brightness corresponding to the gray scale to be displayed according to the brightness corresponding to the reference gray scale and the duty ratio signal, searching reference voltage corresponding to the reference gray scale according to a gamma curve, and transmitting the reference voltage and the duty ratio signal to corresponding pixels; the second preset gray scale is smaller than the third preset gray scale.
13. The system according to claim 10 or 11, wherein the first predetermined gray scale value is 40 gray scales.
14. The drive system for a display panel according to claim 10 or 12,
the second preset gray scale value is less than or equal to 15 gray scales,
the third predetermined gray scale value is between 20 gray scales and 100 gray scales.
15. A display device comprising the driving system according to any one of claims 10 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148754.6A CN108962126B (en) | 2018-09-29 | 2018-09-29 | Display panel driving method and system and display device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811148754.6A CN108962126B (en) | 2018-09-29 | 2018-09-29 | Display panel driving method and system and display device comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108962126A CN108962126A (en) | 2018-12-07 |
| CN108962126B true CN108962126B (en) | 2021-11-19 |
Family
ID=64472663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811148754.6A Active CN108962126B (en) | 2018-09-29 | 2018-09-29 | Display panel driving method and system and display device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108962126B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111916031B (en) * | 2019-05-10 | 2023-03-21 | 京东方科技集团股份有限公司 | Display method and display device |
| CN111916032B (en) * | 2019-05-10 | 2023-06-27 | 京东方科技集团股份有限公司 | Gamma adjustment method and device for display panel |
| CN110473499B (en) * | 2019-07-18 | 2023-11-21 | 武汉天马微电子有限公司 | Gamma voltage debugging method for display panel, display panel and display device |
| CN110473492B (en) * | 2019-08-28 | 2021-01-26 | 上海灵信视觉技术股份有限公司 | Dynamic nonlinear display adjustment method, system and device for LED full-color display screen |
| CN110634434B (en) | 2019-09-11 | 2022-08-05 | 武汉天马微电子有限公司 | Driving method and driving device of display panel and display device |
| CN112885297B (en) * | 2019-11-29 | 2022-02-11 | 敦泰电子股份有限公司 | Gamma setting generation method of display panel and gamma device |
| CN115552506A (en) * | 2020-05-18 | 2022-12-30 | 华为技术有限公司 | Display screen brightness adjusting method and device |
| CN111785209B (en) | 2020-07-16 | 2022-04-19 | 京东方科技集团股份有限公司 | Display panel, driving method thereof and display device |
| CN111968580B (en) * | 2020-09-08 | 2022-10-11 | 京东方科技集团股份有限公司 | Gamma debugging method, gamma debugging device and storage medium |
| CN113299237B (en) * | 2021-06-09 | 2022-11-29 | 北京集创北方科技股份有限公司 | Display panel control method and device, electronic equipment and storage medium |
| CN114267278B (en) * | 2021-12-16 | 2023-08-01 | Tcl华星光电技术有限公司 | Display driving method and display driving module |
| CN116978305B (en) * | 2023-07-04 | 2024-06-07 | 上海傲显科技有限公司 | Multi-gamma dimming method, system and storage medium |
| CN117496887B (en) * | 2024-01-02 | 2024-03-12 | 吉林大学 | LED medical display high-definition gray scale control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101405649A (en) * | 2006-03-22 | 2009-04-08 | 夏普株式会社 | Liquid crystal display device and TV receiver |
| CN102402918A (en) * | 2011-12-20 | 2012-04-04 | 深圳Tcl新技术有限公司 | Method for improving picture quality and liquid crystal display (LCD) |
| CN105895054A (en) * | 2016-05-17 | 2016-08-24 | 深圳天珑无线科技有限公司 | Adjustment method of output brightness, adjustment method of Gamma curve and display device |
| KR20170026909A (en) * | 2015-08-31 | 2017-03-09 | 엘지디스플레이 주식회사 | Display device and luminance control method thereof |
| CN106847198A (en) * | 2015-10-29 | 2017-06-13 | 三星显示有限公司 | Display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9443489B2 (en) * | 2008-04-28 | 2016-09-13 | Au Optronics Corp. | Gamma curve compensating method, gamma curve compensating circuit and display system using the same |
-
2018
- 2018-09-29 CN CN201811148754.6A patent/CN108962126B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101405649A (en) * | 2006-03-22 | 2009-04-08 | 夏普株式会社 | Liquid crystal display device and TV receiver |
| CN102402918A (en) * | 2011-12-20 | 2012-04-04 | 深圳Tcl新技术有限公司 | Method for improving picture quality and liquid crystal display (LCD) |
| KR20170026909A (en) * | 2015-08-31 | 2017-03-09 | 엘지디스플레이 주식회사 | Display device and luminance control method thereof |
| CN106847198A (en) * | 2015-10-29 | 2017-06-13 | 三星显示有限公司 | Display device |
| CN105895054A (en) * | 2016-05-17 | 2016-08-24 | 深圳天珑无线科技有限公司 | Adjustment method of output brightness, adjustment method of Gamma curve and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108962126A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108962126B (en) | Display panel driving method and system and display device comprising same | |
| CN109064979B (en) | Image display processing method and device, display device and storage medium | |
| US10078988B2 (en) | Display apparatus, display control method, and display method | |
| US11335277B2 (en) | Method, apparatus, and device for adjusting backlight brightness based on human eye characteristics | |
| CN109979401B (en) | Driving method, driving apparatus, display device, and computer readable medium | |
| US6839048B2 (en) | LCD with adaptive luminance intensifying function and driving method thereof | |
| US9947257B2 (en) | Pixel layout and display with varying area and/or luminance capability of same type sub-pixels in different composite pixels | |
| US20070047808A1 (en) | Image display device capable of supporting brightness enhancement and power control and method thereof | |
| US9576531B2 (en) | Display device and driving method thereof | |
| US9183797B2 (en) | Display device and control method for display device | |
| KR20070005637A (en) | Display device comprising an adjustable light source | |
| CN109243384B (en) | Display device, driving method thereof, driving apparatus thereof, and computer readable medium | |
| CN105074807A (en) | Compensation methods for display brightness change associated with reduced refresh rate | |
| CN110085174B (en) | Method and device for reducing power consumption of display | |
| JPWO2009054223A1 (en) | Image display device | |
| KR20160044166A (en) | Method of driving display panel and display apparatus performing the same | |
| US10366673B2 (en) | Display device and image processing method thereof | |
| CN103871366A (en) | Gray scale display driving method and device for LED display | |
| WO2019061849A1 (en) | Brightness adjustment method and brightness adjustment device for display panel | |
| CN110992898A (en) | Multi-partition backlight control method and equipment | |
| CN110728944A (en) | Display device and display method | |
| CN109658864B (en) | Display panel display processing method and display processing device | |
| US10417966B2 (en) | Brightness regulation method of a display panel and brightness regulation device | |
| CN114170976A (en) | Display brightness adjusting method and device, electronic equipment and computer readable storage medium | |
| KR20200042564A (en) | Display apparatus and method of driving the same |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |