CN111768743A - Polarity inversion method and device of liquid crystal display and liquid crystal display - Google Patents
Polarity inversion method and device of liquid crystal display and liquid crystal display Download PDFInfo
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- CN111768743A CN111768743A CN202010750975.1A CN202010750975A CN111768743A CN 111768743 A CN111768743 A CN 111768743A CN 202010750975 A CN202010750975 A CN 202010750975A CN 111768743 A CN111768743 A CN 111768743A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
Abstract
The invention provides a polarity inversion method and a device of a liquid crystal display and the liquid crystal display, wherein the polarity inversion method comprises the following steps: and driving and displaying the liquid crystal display by taking m continuous frames as a period, wherein in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from that of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer larger than 2. According to the polarity inversion method provided by the embodiment of the invention, the phenomena of image retention and image flicker of the liquid crystal display during image display can be improved, and the quality of a displayed image is improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a polarity inversion method and device of a liquid crystal display and the liquid crystal display.
Background
Under the conditions of I system (interlaced signal) and weak television signals, the liquid crystal display panel can cause the situation that the positive and negative polarities of pixels in the panel are asymmetrical after playing for a certain time, thereby forming the phenomena of image retention and picture flicker. At present, the conventional scheme adopted for solving the problems is as follows: the two-frame scanning display process is taken as a polarity inversion period, so that the polarities of the same pixel in the two frames are opposite to offset the accumulation of positive/negative polarities of the pixel, but the scheme has the problem that the display panel can have obvious brightness change in the frame with the inverted polarity, thereby influencing the display image quality and reducing the watching experience of a user.
Disclosure of Invention
In view of the above, the present invention provides a polarity inversion method and apparatus for a liquid crystal display, and a liquid crystal display, which can solve the problem of image retention or image flicker in the display process of the liquid crystal display in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
an embodiment of an aspect of the present invention provides a polarity inversion method for a liquid crystal display, including:
and driving and displaying the liquid crystal display by taking m continuous frames as a period, wherein in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from that of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer larger than 2.
Optionally, in the first m-2 frames, the polarity arrangement manner of each frame is as follows: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
Optionally, in the remaining 2 frames, the polarities of the driving voltages of the sub-pixels in the odd-numbered row of each frame are the same, and the polarities of the driving voltages of the sub-pixels in the even-numbered row of each frame are the same.
Optionally, the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is a first polarity, and the polarity arrangement manner of one frame adjacent to the m-2 th frame in the remaining 2 frames is: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are opposite polarities.
Another embodiment of the present invention further provides a polarity inverting apparatus for a liquid crystal display, including:
and the inversion module is used for driving and displaying the liquid crystal display by taking m continuous frames as a period, in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from the polarity arrangement mode of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer greater than 2.
Optionally, in the first m-2 frames, the polarity arrangement manner of each frame is as follows: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
Optionally, in the remaining 2 frames, the polarities of the driving voltages of the sub-pixels in the odd-numbered row of each frame are the same, and the polarities of the driving voltages of the sub-pixels in the even-numbered row of each frame are the same.
Optionally, the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is a first polarity, and the polarity arrangement manner of one frame adjacent to the m-2 th frame in the remaining 2 frames is: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are opposite polarities.
An embodiment of another aspect of the present invention provides a liquid crystal display, including: a polarity reversing device as described above.
Yet another aspect of the present invention provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the polarity inversion method as described above.
The technical scheme of the invention has the following beneficial effects:
according to the polarity inversion method provided by the embodiment of the invention, the phenomena of image retention and image flicker of the liquid crystal display during image display can be improved, and the quality of a displayed image is improved.
Drawings
FIG. 1 is a schematic diagram of a mechanism for generating an afterimage according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a conventional polarity inversion provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a mechanism for flicker generation provided by an embodiment of the present invention;
FIG. 4 is a graph of voltage waveforms under a conventional scheme provided by an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a polarity inversion method of an LCD according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a polarity arrangement of a polarity inversion method according to an embodiment of the present invention;
fig. 7 is a voltage waveform diagram under the polarity inversion method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
Please refer to fig. 1, which is a schematic diagram illustrating a mechanism of generating an afterimage according to an embodiment of the present invention. As shown in fig. 1, when the liquid crystal display uses television signals of I-type (interlaced signals) and weak signals, positive and negative levels of a line a or B cannot be cancelled out between multiple frames, the line a has +127 level accumulation, and the line B has-127 level accumulation, so that after playing for a certain time, pixels in the display panel are in a condition of asymmetric positive and negative polarities, and the pixels are driven by bias voltages to generate residual images.
Please refer to fig. 2, which is a diagram illustrating a conventional polarity inversion according to an embodiment of the present invention. As shown in fig. 2, in order to improve the above problem, normally, after a certain time, a signal with a normal polarity inversion is converted into a polarity inversion signal opposite to the normal polarity inversion signal, for example, the polarities of the driving voltages of the sub-pixels of the first row of the (N-1) th frame are sequentially negative, positive, negative and positive, the polarity of the driving voltage of the sub-pixels of the first row in the nth frame should be positive, negative, however, after the inversion according to the above scheme, the polarity of the driving voltage of the sub-pixels of the first row in the nth frame is actually negative, positive, the voltage bias applied to the liquid crystal will thus be correspondingly inverted, by constantly inverting the polarity, therefore, the voltage bias loaded on the liquid crystal in one time is still zero, the bias voltage accumulation of the liquid crystal is prevented, and the generation of residual images is finally avoided.
Please refer to fig. 3, which is a diagram illustrating a mechanism of flicker generation according to an embodiment of the present invention. In practical applications, although the introduction of the polarity inversion signal better solves the problem of image retention of the liquid crystal display panel, a new problem, namely a flicker phenomenon, is generated at the same time. As shown in fig. 3, taking the row a sub-pixels as an example, in the previous frame with inverted polarity, i.e. N +3 frame, the driving voltage of the row a corresponding sub-pixels is +127, and in the frame with inverted polarity, i.e. N +4 frame, the driving voltage of the row a corresponding sub-pixels is still +127, i.e. the polarities of the two are the same, therefore, the row a corresponding sub-pixels in the fourth frame will continue to be charged in the positive direction based on the driving voltage in the positive direction, which results in the voltage of the sub-pixels in the fourth frame being higher than the normal voltage, as circled in fig. 3, and the subsequent frame after the frame will return to the normal voltage, which results in higher brightness of the frame than other frames, i.e. the display screen generates the flicker phenomenon.
Referring to fig. 4, a voltage waveform diagram under a conventional scheme according to an embodiment of the invention is shown. As shown in fig. 4, in the conventional polarity inversion scheme, the voltage difference between the highest point a (9.74mV) and the lowest point B (-18.06mV) of the voltage is 27.8mV, and the voltage has a positive correlation with the brightness, which indicates that the flicker phenomenon is more noticeable when inverted.
Therefore, please refer to fig. 5, which is a flowchart illustrating a polarity inversion method of a liquid crystal display according to an embodiment of the present invention. As shown in fig. 5, the method for inverting the polarity of the liquid crystal display according to the embodiment of the present invention may include the following steps:
step 51: and driving and displaying the liquid crystal display by taking m continuous frames as a period, wherein in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from that of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer larger than 2.
In the embodiment of the application, the charging voltage of the pixels in each frame is controlled by setting the polarity arrangement mode of the pixels in each frame, so that the bias voltage of the liquid crystal in a certain time is zero, and finally, the residual image is eliminated and the flicker phenomenon is avoided.
In the embodiment of the application, in the display process of the liquid crystal display, the liquid crystal display is driven and displayed by m frames in each period. In one period, the polarity arrangement of the first m-2 frames is the same, and the polarities of the driving voltages of the same sub-pixels of two adjacent frames in the first m-2 frames are opposite, and the polarity arrangement of each frame in the first m-2 frames is as follows: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
Fig. 6 is a schematic diagram of a polarity arrangement of the polarity inversion method according to an embodiment of the present invention. As shown in fig. 6, the m-2 th frame, the m-1 th frame, and the m +1 th frame are enumerated in the figure, where the m-2 th frame, the m-1 th frame, and the m +1 th frame belong to a same period, and the m +1 th frame is the first frame of the next period, and in one period, the polarity arrangement modes of the first m-2 frames are all the same, that is, the polarity arrangement mode is: in one frame, the polarities of the driving voltages of two adjacent sub-pixels in the same row are opposite, and the polarities of the driving voltages of two adjacent sub-pixels in the same column are also opposite. For example, the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame in the figure is the first polarity, the polarity arrangement of the driving voltage of the sub-pixel in the first row is the first polarity, the second polarity, and the polarity arrangement of the driving voltage of the sub-pixel in the first column is the first polarity, the second polarity, the first polarity, the second polarity; in the first m-2 frame, the polarities of the driving voltages of the same sub-pixels in the two adjacent frames are opposite, for example, the polarity arrangement of the driving voltages of the sub-pixels in the first row of the m-3 frame (i.e., the frame before the m-2 frame in fig. 6) should be: the second polarity, the first polarity, and the polarity arrangement of the driving voltage of the sub-pixels in the first column of the m-3 th frame should be: the second polarity, the first polarity, the second polarity, and the first polarity define that the polarities of the driving voltages of two adjacent sub-pixels in the same row in the same frame are opposite, so the polarities of the driving voltages of the other sub-pixels can be obtained correspondingly. In the embodiment of the present application, specifically, the first polarity may correspond to negative, and the second polarity may correspond to positive, and of course, the first polarity may correspond to positive, and the second polarity may correspond to negative, where the first polarity is set to negative and the second polarity is set to positive in fig. 6.
In the embodiment of the present application, in the remaining 2 frames, the polarities of the driving voltages of the sub-pixels in the odd-numbered row of each frame are the same, and the polarities of the driving voltages of the sub-pixels in the even-numbered row of each frame are the same. More specifically, in the remaining 2 frames, the polarity arrangement of each frame is: repeating the process with 8 columns of sub-pixels as a period, (generally, the number of sub-pixels in a frame is much larger than 8), the polarities of the driving voltages of the sub-pixels in the first column, the fourth column and the seventh column of each frame (or every 8 columns of sub-pixels in each frame) are the same, the polarities of the driving voltages of the sub-pixels in the third, fifth and eighth columns are the same, the driving voltages of the sub-pixels in the second column are all of the same polarity, the driving voltages of the sub-pixels in the sixth column are all of the same polarity, the polarity of the driving voltage of the sub-pixel of the first column is opposite to the polarity of the driving voltage of the sub-pixel of the third column, the polarity of the driving voltage of the sub-pixel of the second column is opposite to the polarity of the driving voltage of the sub-pixel of the sixth column, the polarity of the driving voltage of the adjacent sub-pixel of the first column is opposite, and the polarity of the driving voltage of the adjacent sub-pixel of the third column is also opposite; in the remaining 2 frames, the polarity of the driving voltage of the first sub-pixel of the first row of one frame adjacent to the m-2 th frame is the same as the polarity of the driving voltage of the first sub-pixel of the first row of the m-2 th frame.
In this embodiment of the application, the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is the first polarity, and in the remaining 2 frames, the polarity arrangement manner of the frame adjacent to the m-2 th frame may be: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are two opposite polarities; since the polarities of the driving voltages of the sub-pixels in the odd-numbered row are the same and the polarities of the driving voltages of the sub-pixels in the even-numbered row are also the same, it is considered that the driving voltages are repeated in a cycle of 2 rows and 8 columns in the remaining 2 frames. In the embodiment of the present application, specifically, the first polarity may correspond to negative, and the second polarity may correspond to positive, and of course, the first polarity may correspond to positive, and the second polarity may correspond to negative, where the first polarity is set to negative and the second polarity is set to positive in fig. 6.
Fig. 7 is a voltage waveform diagram of the polarity inversion method according to the embodiment of the present invention. As shown in fig. 7, after the polarity inversion method in the embodiment of the present invention was applied, the voltage difference between the highest point a '(9.87 mV) and the lowest point B' (9.05 mV) of the voltage was 18.92mV, which was reduced by about 9mV from the voltage difference (27.8mV) in the conventional scheme, indicating that the brightness of the inverted frame was effectively controlled at the time of inversion and the flicker phenomenon was effectively improved.
In the embodiment of the invention, the charging voltage of the pixels in each frame is controlled by setting the polarity arrangement mode of the pixels in each frame, so that the bias voltage of the liquid crystal in a certain time is zero, the residual image is eliminated, the flicker phenomenon is avoided, and the quality of the display picture is improved.
Another embodiment of the present invention further provides a polarity reversing device of a liquid crystal display, where the polarity reversing device may include:
and the inversion module is used for driving and displaying the liquid crystal display by taking m continuous frames as a period, in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from the polarity arrangement mode of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer greater than 2.
In the embodiment of the invention, the charging voltage of the pixels in each frame is controlled by setting the polarity arrangement mode of the pixels in each frame, so that the bias voltage of the liquid crystal in a certain time is zero, the residual image is eliminated, the flicker phenomenon is avoided, and the quality of the display picture is improved.
Optionally, in the first m-2 frames, the polarity arrangement manner of each frame is as follows: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
Optionally, in the remaining 2 frames, the polarities of the driving voltages of the sub-pixels in the odd-numbered row of each frame are the same, and the polarities of the driving voltages of the sub-pixels in the even-numbered row of each frame are the same.
Optionally, the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is a first polarity, and the polarity arrangement manner of one frame adjacent to the m-2 th frame in the remaining 2 frames is: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are opposite polarities.
The polarity reversing device in the embodiment of the invention can realize each step in the polarity reversing method, can achieve the same technical effect, and is not described herein again to avoid repetition.
An embodiment of another aspect of the present invention further provides a liquid crystal display, including: the polarity reversing device as described in the above embodiments. The polarity inversion device in the above embodiment can control the charging voltage of the pixels in each frame by setting the polarity arrangement manner of the pixels in each frame, so that the bias voltage of the liquid crystal is zero within a certain time, and finally, the occurrence of a flicker phenomenon is avoided while the residual image is eliminated, and the quality of a displayed image is improved.
In another aspect, an embodiment of the present invention further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the steps of the polarity inversion method described in the above embodiment are implemented, and the same technical effects can be achieved, and in order to avoid repetition, details are not repeated here.
While the foregoing is directed to embodiments of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the principles of the invention, and it is intended that all such changes and modifications be considered as within the scope of the invention.
Claims (10)
1. A method of polarity inversion for a liquid crystal display, comprising:
and driving and displaying the liquid crystal display by taking m continuous frames as a period, wherein in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from that of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer larger than 2.
2. The polarity inversion method according to claim 1, wherein the polarity arrangement of each of the first m-2 frames is: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
3. The polarity inversion method according to claim 1, wherein in the remaining 2 frames, the polarities of the driving voltages of the sub-pixels in the odd-numbered rows of each frame are the same, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows of each frame are the same.
4. The polarity inversion method according to claim 3, wherein the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is the first polarity, and the polarity of the frame adjacent to the m-2 nd frame in the remaining 2 frames is arranged in a manner that: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are opposite polarities.
5. A polarity reversing device of a liquid crystal display, comprising:
and the inversion module is used for driving and displaying the liquid crystal display by taking m continuous frames as a period, in one period, the polarity arrangement mode of the first m-2 frames is the same, the polarity of the driving voltage of the same sub-pixel of the two adjacent frames in the first m-2 frames is opposite, the polarity arrangement mode of the first m-2 frames is different from the polarity arrangement mode of the rest 2 frames, the polarity arrangement mode of the rest 2 frames is the same, and the polarity of the driving voltage of the same sub-pixel of the rest 2 frames is opposite, wherein m is a positive integer greater than 2.
6. The polarity reversing device according to claim 5, wherein the polarity arrangement of each frame in the first m-2 frames is: the polarities of the driving voltages of two adjacent sub-pixels in the same row and the same column are opposite.
7. The apparatus according to claim 5, wherein in the remaining 2 frames, the polarities of the driving voltages for the sub-pixels in the odd-numbered rows of each frame are the same, and the polarities of the driving voltages for the sub-pixels in the even-numbered rows of each frame are the same.
8. The polarity reversing device according to claim 7, wherein the polarity of the driving voltage of the first sub-pixel in the first row of the m-2 th frame is the first polarity, and the polarity of the frame adjacent to the m-2 nd frame in the remaining 2 frames is arranged as follows: the polarities of the driving voltages of the sub-pixels in the odd-numbered rows are periodically arranged according to a rule of a first polarity, a second polarity, a first polarity, and a second polarity, and the polarities of the driving voltages of the sub-pixels in the even-numbered rows are periodically arranged according to a rule of a second polarity, a first polarity, a second polarity, and a first polarity, wherein the first polarity and the second polarity are opposite polarities.
9. A liquid crystal display, comprising: a polarity reversing device as claimed in any one of claims 5 to 8.
10. A readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the polarity inversion method according to any one of claims 1-4.
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|---|---|---|---|---|
| WO2023272820A1 (en) * | 2021-06-30 | 2023-01-05 | 惠州华星光电显示有限公司 | Pixel driving architecture, display panel, and display device |
| CN115331640A (en) * | 2022-07-11 | 2022-11-11 | 福州京东方光电科技有限公司 | Liquid crystal polarity inversion driving method and device and liquid crystal display equipment |
| CN115331640B (en) * | 2022-07-11 | 2024-03-26 | 福州京东方光电科技有限公司 | Liquid crystal polarity inversion driving method and device and liquid crystal display equipment |
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