CN109949731B - Driving method and driving device of display panel - Google Patents
Driving method and driving device of display panel Download PDFInfo
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Abstract
The embodiment of the invention discloses a driving method and a driving device of a display panel. The driving method comprises the steps of obtaining a pre-display image data signal; acquiring a random number control signal; performing perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal; and driving the display panel to display according to the disturbance driving signal. According to the technical scheme, the pre-display image data signal is subjected to perturbation processing according to the random number control signal, so that the pre-display image data signal generates a random variation component relative to an original value, and the color richness of an actual display picture of the display panel is increased on the premise of ensuring that the pre-display image of the display panel has no abrupt visual change.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a driving method and a driving device of a display panel.
Background
Each parameter of the actual display picture of the display panel depends on the pre-display image data signal, and the pre-display image data is generally converted into an analog voltage signal or an analog current signal through a driving chip in the display panel to drive the display panel to realize the display function. The existing driving mechanism makes the color richness of the actual display image of the display panel only related to the pre-display image data signal, and as the demand of the user for the color richness of the display panel increases, how to improve the color richness of the actual display image of the display panel on the premise of the existing driving mechanism becomes an urgent problem to be solved.
Disclosure of Invention
In view of this, embodiments of the present invention provide a driving method and a driving apparatus for a display panel, in which a pre-display image data signal is subjected to perturbation processing according to a random number control signal, so that the pre-display image data signal generates a random variation component relative to an original value, and on the premise of ensuring that a relatively abrupt visual change of a pre-display image of the display panel is not caused, the color richness of an actual display image of the display panel is increased.
In a first aspect, an embodiment of the present invention provides a method for driving a display panel, including:
acquiring a pre-display image data signal;
acquiring a random number control signal;
performing perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal;
and driving the display panel to display according to the disturbance driving signal.
Further, the performing perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal includes:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel according to the random number control signal so as to obtain disturbing driving signals corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
Further, the performing micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal includes:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different pixel units of the display panel according to the random number control signal so as to obtain disturbing driving signals corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
Further, the performing micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal includes:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel according to the random number control signal, and randomly selecting pre-display image data signal coupling disturbing signals corresponding to different pixel units of the display panel according to the random number control signal so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
Further, the disturbing driving signal is a digital signal, and after the performing the micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain the disturbing driving signal, the method further includes:
the disturbing drive signal in the form of a digital signal is converted into a disturbing drive signal in the form of an analog signal.
Further, before the performing micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal, the method further includes:
the pre-display image data signal in the form of a digital signal is converted into a pre-display image data signal in the form of an analog signal.
Further, the pre-display image data signal is coupled with the disturbance signal in a current coupling or voltage coupling mode.
Further, the acquiring the pre-display image data signal includes:
and arranging the original image data signals according to the arrangement mode of the pixel units of the display panel, and carrying out value taking on the original image data signals according to the parameters of the pre-display image to obtain the pre-display image data signals.
In a second aspect, an embodiment of the present invention further provides a driving apparatus for a display panel, including:
the pre-display image data signal acquisition module is used for acquiring a pre-display image data signal;
the random number control signal acquisition module is used for acquiring a random number control signal;
the disturbance driving signal acquisition module is used for carrying out perturbation processing on the pre-display image data signal according to the random number control signal so as to acquire a disturbance driving signal;
and the driving module is used for driving the display panel to display according to the disturbance driving signal.
Further, the disturbance driving signal acquisition module is integrated with the driving module or is separately arranged.
The embodiment of the invention provides a driving method and a driving device of a display panel, which are characterized in that a random number control signal is obtained, and a pre-display image data signal is subjected to perturbation processing according to the random number control signal, so that the obtained perturbation driving signal contains a random variation component on the basis of the pre-display image data signal, namely, the pre-display image data signal generates a random variation component relative to an original value, the display panel is driven to display according to the perturbation driving signal containing the random variation component, and the color richness of an actual display picture of the display panel is increased on the premise of ensuring that the pre-display image of the display panel has abrupt visual variation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flowchart illustrating a driving method of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another driving method for a display panel according to an embodiment of the invention;
fig. 3 is a schematic flowchart of another driving method for a display panel according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of a driving apparatus of a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. Throughout this specification, the same or similar reference numbers refer to the same or similar structures, elements, or processes. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the invention provides a driving method of a display panel, which can be applied to scenes needing to drive the display panel and can be executed by the driving device of the display panel provided by the embodiment of the invention. Fig. 1 is a schematic flowchart of a driving method of a display panel according to an embodiment of the present invention, and as shown in fig. 1, the driving method of the display panel includes:
and S110, acquiring a pre-display image data signal.
Specifically, the pre-display image data signal includes corresponding parameter information of a pre-display image of the display panel, taking a gray scale value parameter of the pre-display image as an example, the pre-display image data signal may be set to be an 8-bit digital signal, and the pre-display image data signals are different, so that a gray scale value of the pre-display image of the display panel may be changed from 0 gray scale to 255 gray scale, or the pre-display image data signal may be set to be a 10-bit digital signal, and the pre-display image data signals are different, so that a gray scale value of the pre-display image of the display panel may be changed from 0 gray scale to 256 gray scale.
Optionally, the original image data signals may be arranged according to an arrangement manner of pixel units of the display panel, and the values of the original image data signals are taken according to the pre-display image parameters to obtain the pre-display image data signals.
For example, the display panel may include a plurality of pixel units, the pixel units in the display panel may be arranged in a matrix or in other forms, and the pixel units in the display panel may include pixel units of a plurality of colors, for example, the display panel may include a red pixel unit, a green pixel unit, and a blue pixel unit, and the arrangement order of the red pixel unit, the green pixel unit, and the blue pixel unit is different for different display panels. The original image data signals may be arranged according to a specific arrangement mode of pixel units of the display panel, and the values of the original image data signals are taken according to the pre-display image parameters to obtain the pre-display image data signals. For example, the original image data signal may be subjected to value extraction according to parameters such as a gray scale value and saturation of the pre-displayed image, so that the original image data signal after value extraction meets requirements of the parameters of the pre-displayed image, and the pre-displayed image data signal is obtained.
And S120, acquiring a random number control signal.
For example, the random number control signal may be output by a random number generator, which outputs a random number control signal that is a random number without periodicity and any permutation rule.
And S130, carrying out micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal.
Optionally, the pre-display image data signals corresponding to different display periods of the same pixel unit of the display panel may be randomly selected to couple with the disturbing signal according to the random number control signal, so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbing signal is smaller than the pre-display image data signal.
For example, taking a display period of a pixel unit corresponding to one frame of a display frame as an example, since the random number control signal is a random number without periodicity and any arrangement rule, when performing perturbation processing on a pre-display image data signal corresponding to one pixel unit in the display panel, the pre-display image data signal corresponding to the pixel unit in some frames of the display frame may be randomly selected to couple a perturbation signal according to the random number control signal.
In order to prevent the disturbance driving signal after the coupling of the disturbance signal from generating an excessive change relative to the driving signal before the disturbance, so that the display image of the display panel has a sudden change in visual effect, the coupled disturbance signal may be a small disturbance signal, and the disturbance signal may be set to be smaller than the pre-display image data signal, and preferably set to be much smaller than the pre-display image data signal coupled thereto. For example, the disturbing signal may be a positive value or a negative value, and the pre-display image data signals corresponding to the same pixel unit in the display panel in some frames may be randomly selected to be superimposed with a positive value disturbing signal, i.e. the pre-display image data corresponding to the pixel unit in the frames is increased; randomly selecting a pre-display image data signal corresponding to the pixel unit in the display panel in the rest part of frame display pictures to superpose a negative value disturbance signal, namely reducing the pre-display image data signal corresponding to the pixel unit in the frame display pictures; for the remaining frame display frames corresponding to the pixel unit in the display panel, the pre-display image data signals corresponding to the frame display frames of the pixel unit may be set to remain unchanged, that is, the pre-display image data signals corresponding to the frame display frames of the pixel unit are not coupled with the disturbing signal, so as to implement randomness of the coupled disturbing signal.
Therefore, the coupling disturbance signals of the pre-display image data signals corresponding to different display periods of the same pixel unit of the display panel are randomly selected, the coupled signals are used as the disturbance driving signals corresponding to all the pixel units of the display panel, the disturbance signals coupled with the pre-display image data signals are smaller than the pre-display image data signals, and the display panel is driven to display according to the coupled disturbance driving signals, so that the color richness of the actual display picture of the display panel is increased on the premise of ensuring that the pre-display image of the display panel has abrupt visual change.
It should be noted that, in the embodiment of the present invention, it is not limited whether absolute values of disturbance signals coupled to pre-display image data signals corresponding to different display periods of the same pixel unit in the display panel are equal, and may be equal or unequal.
Optionally, the pre-display image data signals corresponding to different pixel units of the display panel may be randomly selected to couple with the disturbing signal according to the random number control signal, so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbing signal is smaller than the pre-display image data signal.
Specifically, since the random number control signal is a random number without periodicity and any arrangement rule, when performing micro-disturbance processing on the pre-display image data signals corresponding to the pixel units in the display panel, the pre-display image data signals corresponding to some pixel units in the display panel can be randomly selected according to the random number control signal to couple with the disturbance signal.
Similarly, in order to prevent the disturbance driving signal after the coupling of the disturbance signal from generating an excessive change relative to the driving signal before the disturbance, so that the display image of the display panel has a sharp change in visual effect, the coupled disturbance signal may be a small disturbance signal, and the disturbance signal may be set to be smaller than the pre-display image data signal, and preferably set to be much smaller than the pre-display image data signal coupled thereto. Similarly, the disturbing signal may be a positive value or a negative value, and the pre-display image data signals corresponding to a part of the pixel units in the display panel may be randomly selected to be superimposed with a positive value disturbing signal, that is, the pre-display image data corresponding to the part of the pixel units in the display panel is increased; randomly selecting pre-display image data signals corresponding to the rest of pixel units in the display panel to be superposed with a negative value disturbance signal, namely reducing the pre-display image data signals corresponding to the part of pixel units; for the remaining pixel units in the display panel, the pre-display image data signals corresponding to the portion of the pixel units may be set to remain unchanged, i.e., the pre-display image data signals corresponding to the portion of the pixel units are not coupled with the disturbance signal.
Therefore, the coupling disturbance signals of the pre-display image data signals corresponding to different pixel units of the display panel are randomly selected, the coupled signals are used as the disturbance driving signals corresponding to the pixel units of the display panel, the disturbance signals coupled with the pre-display image data signals are smaller than the pre-display image data signals, and the display panel is driven to display according to the coupled disturbance driving signals, so that the color richness of the actual display picture of the display panel is increased on the premise of ensuring that the pre-display image of the display panel has abrupt visual change.
It should be noted that, in the embodiments of the present invention, it is not limited whether absolute values of disturbance signals coupled to pre-display image data signals corresponding to different pixel units in a display panel are equal, and may be equal or unequal.
Optionally, the pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel can be randomly selected according to the random number control signal, and the pre-display image data signal coupling disturbing signals corresponding to different pixel units of the display panel can be randomly selected according to the random number control signal, so as to obtain the disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbing signal is smaller than the pre-display image data signal.
For example, the pre-display image data signals corresponding to the pixel units of the display panel may be subjected to the micro-disturbance processing in time only according to the random number control signal, or may be subjected to the micro-disturbance processing in space only according to the random number control signal, or may be subjected to the micro-disturbance processing in time according to the random number control signal, and the pre-display image data signals corresponding to the pixel units of the display panel may be subjected to the micro-disturbance processing in space according to the random number control signal, where the disturbance principle is the same as the principle of the micro-disturbance processing in time and the principle of the micro-disturbance processing in space, and is not described herein again.
According to the random numerical control signal, the pre-display image data signals corresponding to the pixel units of the display panel are subjected to micro-disturbance processing in time and space at the same time, and the display panel is driven to display according to the coupled disturbance driving signal, so that the color richness of the actual display picture of the display panel can be further increased on the premise of ensuring that the pre-display image of the display panel has abrupt visual change.
And S140, driving the display panel to display according to the disturbance driving signal.
Specifically, the display panel includes a plurality of pixel units, and the driving signal for driving each pixel unit determines the display gray-scale value of the pixel unit, which in turn determines the display parameters such as the brightness and the saturation of the whole display frame of the display panel. The display panel is driven to display according to the disturbance driving signal which is randomly coupled with the disturbance signal, so that the color richness of the actual display picture of the display panel is further increased on the premise that the pre-display image of the display panel has abrupt visual change.
Fig. 2 is a schematic flow chart of another driving method for a display panel according to an embodiment of the present invention, which adds a step of converting a disturbing driving signal in the form of a digital signal into a disturbing driving signal in the form of an analog signal on the basis of the step shown in fig. 1.
Correspondingly, the driving method of the display panel comprises the following steps:
and S210, acquiring a data signal of the pre-display image.
And S220, acquiring a random number control signal.
And S230, carrying out micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal.
And S240, converting the disturbance driving signal in the form of the digital signal into a disturbance driving signal in the form of an analog signal.
Specifically, since the pre-display image data signal is a digital signal, when the pre-display image data signal is subjected to perturbation processing in time, space, or both time and space according to the random number control signal, the perturbation signal coupled with the pre-display image data signal is also a digital signal. For example, the number of bits of the disturbance signal in the form of a digital signal may be set to be the same as the number of bits of the pre-display image data signal in the form of a digital signal, and taking the example that the number of bits of the pre-display image data signal and the number of bits of the disturbance signal are both 8 bits, the disturbance signal may be 00000001, for example, the pre-display image data signal is coupled to the disturbance signal and then is increased relative to the original pre-display image data signal, the disturbance signal may be 10000001, for example, the pre-display image data signal is coupled to the disturbance signal and then is decreased relative to the original pre-display image data signal, and the disturbance driving signal obtained after the perturbation processing is also a digital signal.
Since the driving signal for driving the pixel unit in the display panel to display needs to be an analog signal to determine the gray scale value of the pixel unit in the display panel, the disturbance driving signal in the form of a digital signal obtained by coupling needs to be converted into a disturbance driving signal in the form of an analog signal, and then the display panel is driven to realize the display function.
And S250, driving the display panel to display according to the disturbance driving signal.
According to the random numerical control signal, the pre-display image data signal in the form of a digital signal corresponding to the pixel unit of the display panel is subjected to micro-disturbance processing in time, space or both time and space, that is, the pre-display image data signal in the form of a digital signal is coupled with the disturbance signal in the form of a digital signal, and then the coupled disturbance driving signal in the form of a digital signal is converted into the disturbance driving signal in the form of an analog signal.
Fig. 3 is a schematic flow chart of another driving method for a display panel according to an embodiment of the present invention, which adds a step of converting a disturbing driving signal in the form of a digital signal into a disturbing driving signal in the form of an analog signal on the basis of the step shown in fig. 1.
Correspondingly, the driving method of the display panel comprises the following steps:
and S310, acquiring a data signal of a pre-display image.
And S320, acquiring a random number control signal.
S330, converting the pre-display image data signal in the form of digital signal into a pre-display image data signal in the form of analog signal.
Specifically, since the pre-display image data signal is a digital signal, compared to the driving method of the display panel shown in fig. 2, the pre-display image data signal in the form of a digital signal may be converted into the pre-display image data signal in the form of an analog signal.
And S340, carrying out micro-disturbance processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal.
Specifically, when the pre-display image data signal is subjected to micro-disturbance processing in time, space, or both time and space according to the random number control signal, the disturbance signal coupled with the pre-display image data signal is an analog signal, and the coupling of the pre-display image data signal with the disturbance signal may be, for example, current coupling, that is, the disturbance signal may be set to be a minute current, the minute current is superimposed on the current of the pre-display image data signal to obtain the current of the disturbance driving signal, the driving current flowing through the pixel unit in the display panel is determined according to the current of the disturbance driving signal, and the display panel accordingly realizes the display function. For example, the pre-display image data line number may be coupled to the disturbing signal by voltage coupling, that is, the disturbing signal may be set to be a minute voltage, the minute voltage is superimposed on the voltage of the pre-display image data signal to obtain the voltage of the disturbing driving signal, the driving voltage applied to the pixel unit in the display panel is determined according to the voltage of the disturbing driving signal, and the display panel accordingly implements the display function.
And S350, driving the display panel to display according to the disturbance driving signal.
According to the random number control signal, the pre-display image data signal in the analog signal form corresponding to the pixel unit of the display panel is subjected to micro-disturbance processing in time, space or both time and space, that is, the pre-display image data signal in the analog signal form is coupled with the disturbance signal in the analog signal form, and then the display panel is driven to display according to the disturbance driving signal in the coupled analog signal form.
Fig. 4 is a schematic structural diagram of a driving apparatus for a display panel according to an embodiment of the present invention, and as shown in fig. 4, the driving apparatus for a display panel includes:
a pre-display image data signal obtaining module 410, configured to obtain a pre-display image data signal;
a random number control signal obtaining module 420, configured to obtain a random number control signal;
a disturbance driving signal obtaining module 430, configured to perform perturbation processing on the pre-display image data signal according to the random number control signal to obtain a disturbance driving signal;
and the driving module 440 is configured to drive the display panel to display according to the disturbance driving signal.
Alternatively, the disturbance driving signal obtaining module 430 may be integrated with the driving module 440, or may be separately provided. Illustratively, the driving module may be a driving chip of the display panel for providing control signals to the electronic elements.
The embodiment of the invention acquires the random number control signal and carries out micro-disturbance processing on the pre-display image data signal according to the random number control signal, so that the acquired disturbance driving signal comprises a random variation component on the basis of the pre-display image data signal, namely, the pre-display image data signal generates a random variation component relative to an original value, and the display panel is driven to display according to the disturbance driving signal comprising the random variation component, thereby increasing the color richness of the actual display picture of the display panel on the premise of ensuring that the pre-display image of the display panel has abrupt visual variation.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A method of driving a display panel, comprising:
acquiring a pre-display image data signal;
acquiring a random number control signal;
carrying out perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal;
driving the display panel to display according to the disturbance driving signal;
the performing perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal includes:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel according to the random number control signal so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
2. The driving method according to claim 1, wherein the performing the micro-perturbation process on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal comprises:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel according to the random number control signal, and randomly selecting pre-display image data signal coupling disturbing signals corresponding to different pixel units of the display panel according to the random number control signal so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
3. The driving method according to claim 1, wherein the disturbing driving signal is a digital signal, and after the micro-disturbing processing is performed on the pre-display image data signal according to the random number control signal to obtain the disturbing driving signal, the method further comprises:
the disturbing drive signal in the form of a digital signal is converted into a disturbing drive signal in the form of an analog signal.
4. The driving method according to claim 1, wherein before the performing the micro-perturbation process on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal, the method further comprises:
the pre-display image data signal in the form of a digital signal is converted into a pre-display image data signal in the form of an analog signal.
5. The driving method according to claim 4, wherein the pre-display image data signal is coupled to the disturbing signal by current coupling or voltage coupling.
6. The driving method according to claim 1, wherein the acquiring the pre-display image data signal comprises:
and arranging the original image data signals according to the arrangement mode of the pixel units of the display panel, and carrying out value taking on the original image data signals according to the parameters of the pre-display image to obtain the pre-display image data signals.
7. A driving apparatus of a display panel, comprising:
the pre-display image data signal acquisition module is used for acquiring a pre-display image data signal;
the random number control signal acquisition module is used for acquiring a random number control signal;
the disturbance driving signal acquisition module is used for carrying out perturbation processing on the pre-display image data signal according to the random number control signal so as to acquire a disturbance driving signal;
the driving module is used for driving the display panel to display according to the disturbance driving signal;
the performing perturbation processing on the pre-display image data signal according to the random number control signal to obtain a perturbation driving signal includes:
randomly selecting pre-display image data signal coupling disturbing signals corresponding to different display periods of the same pixel unit of the display panel according to the random number control signal so as to obtain a disturbing driving signal corresponding to each pixel unit of the display panel; wherein the disturbance signal is smaller than the pre-display image data signal.
8. The driving device according to claim 7, wherein the disturbance driving signal obtaining module is integrated with the driving module or is separately provided.
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| CN1542715A (en) * | 2003-04-02 | 2004-11-03 | 夏普株式会社 | Driving device of image display device, program and storage medium thereof, image display device, and television receiver |
| CN101038734A (en) * | 2003-04-02 | 2007-09-19 | 夏普株式会社 | Image display device, driving method and device of image display device |
| CN1815546A (en) * | 2006-02-28 | 2006-08-09 | 友达光电股份有限公司 | Dynamic figure indexing system and method |
| CN101086824A (en) * | 2006-06-09 | 2007-12-12 | 瀚宇彩晶股份有限公司 | Pixel structure of LCD and its driving method |
| CN102479481A (en) * | 2010-11-29 | 2012-05-30 | 索尼公司 | Image display device, driving method of image display device, image display program, and gradation conversion device |
| CN103177702A (en) * | 2013-03-04 | 2013-06-26 | 南京巨鲨显示科技有限公司 | Display with grayscale expansion function and method thereof |
| CN107293262A (en) * | 2016-03-31 | 2017-10-24 | 上海和辉光电有限公司 | Control method, control device and display device for driving display screen |
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