CN111292692A - Pixel matrix driving device, pixel matrix driving method and display thereof - Google Patents
Pixel matrix driving device, pixel matrix driving method and display thereof Download PDFInfo
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- CN111292692A CN111292692A CN201811488784.1A CN201811488784A CN111292692A CN 111292692 A CN111292692 A CN 111292692A CN 201811488784 A CN201811488784 A CN 201811488784A CN 111292692 A CN111292692 A CN 111292692A
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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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The invention relates to a pixel matrix driving device, a pixel matrix driving method and a display thereof, wherein the pixel matrix driving device comprises a pixel matrix, a time sequence controller and a driving module, the pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixel in the ith row and the sub-pixel in the (i + 1) th row; the time sequence controller is used for acquiring an initial pixel value and obtaining a first gray scale value and a second gray scale value according to the initial pixel value; and the driving module is used for obtaining a first loading voltage according to the first gray scale value, obtaining a second loading voltage according to the second gray scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix. The polarity inversion positions of the sub-pixels of the two adjacent rows are different, and the sub-pixels in a certain row and the sub-pixels in a certain column are loaded with the voltage by the first loading voltage or the second loading voltage alternately, so that the horizontal equidistant transverse striation can be improved, the whitening phenomenon of the display panel in the side view can be improved, and the front view and the side view have good display quality.
Description
Technical Field
The invention belongs to the technical field of display, and particularly relates to a pixel matrix driving device, a pixel matrix driving method and a display thereof.
Background
With the development of Display technology, a Display (LCD) has advantages of lightness, thinness, and low radiation, and is gradually replacing a Cathode Ray Tube (CRT) Display device, and becoming the most common Display device in information terminals such as computers, smart phones, mobile phones, car navigation devices, and electronic books.
As the display specification of the lcd is continuously developing towards large size, the market demands the lcd performance to pay more and more attention to the characteristics of high contrast, fast response, wide viewing angle, etc. In order to overcome the viewing angle problem of large-sized liquid crystal displays, the wide viewing angle technology of liquid crystal displays must be continuously improved and broken through. Polymer Stabilized vertical alignment liquid crystal (PSVA) is one of the wide viewing angle technologies currently widely used in liquid crystal displays. In addition, the polarity Inversion driving method of the pixel matrix in the liquid crystal display is mainly a 1+ N Line Inversion (1+ N row pixel signal polarity Inversion) driving method, in which the polarity Inversion is performed every N rows of sub-pixels, and therefore, the polarity Inversion positions are all at the pixel positions in the same row.
However, in the PSVA type liquid crystal panel, since the optical path difference of the liquid crystal is larger in the side view direction than in the front view direction, a white phenomenon occurs in the side view. In addition, the 1+ N Line Inversion driving method has large power consumption and temperature, and due to RC (Resistance Capacitance) delay effect, the pixel charging is insufficient, thereby causing horizontal equidistant stripes on the liquid crystal panel.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a pixel matrix driving apparatus, a pixel matrix driving method and a display thereof.
One embodiment of the invention provides a pixel matrix driving device, which comprises a pixel matrix, a time schedule controller and a driving module, wherein the pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixels in the ith column and the sub-pixels in the (i + 1) th column;
the time sequence controller is used for acquiring an initial pixel value and obtaining a first gray scale value and a second gray scale value according to the initial pixel value;
and the driving module is used for obtaining a first loading voltage according to the first gray scale value, obtaining a second loading voltage according to the second gray scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix.
In an embodiment of the invention, the timing controller is specifically configured to obtain an initial pixel value of each sub-pixel, and convert the initial pixel value of each sub-pixel into a first gray-scale value and a second gray-scale value according to a preset rule.
In one embodiment of the present invention, the driving module includes a data driving module and a scan driving module;
the data driving module is used for loading voltage to the pixel matrix by alternately loading a first loading voltage or a second loading voltage along the direction of a data line at a first set interval in one frame;
the scanning driving module is used for loading voltage to the pixel matrix by alternately loading the voltage with the first loading voltage or the second loading voltage along the scanning line direction at a second set interval in one frame.
In one embodiment of the invention, the polarity of the jth sub-pixel of the sub-pixel in the ith column is opposite to the polarity of the j + Nth sub-pixel, wherein N ≧ 4.
In an embodiment of the invention, the first loading voltage is smaller than the second loading voltage, and the loading voltages of the jth sub-pixel and the jth + nth sub-pixel of the ith column of sub-pixels are both the first loading voltage.
In one embodiment of the present invention, the polarity of the sub-pixel in the ith column is the same as the polarity of the sub-pixel in the (i + M) th column.
An embodiment of the present invention further provides a pixel matrix driving method, where the pixel matrix includes a plurality of sub-pixels, and the i-th column of sub-pixels and the i + 1-th column of sub-pixels have different polarity inversion positions;
the pixel matrix driving method comprises the following steps:
acquiring an initial pixel value, and acquiring a first gray scale value and a second gray scale value according to the initial pixel value;
and obtaining a first loading voltage according to the first gray-scale value, obtaining a second loading voltage according to the second gray-scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix.
In an embodiment of the present invention, obtaining an initial pixel value and obtaining a first gray-scale value and a second gray-scale value according to the initial pixel value includes:
and acquiring an initial pixel value of each sub-pixel, and converting the initial pixel value of each sub-pixel into a first gray-scale value and a second gray-scale value according to a preset rule.
In one embodiment of the invention, loading the first and second loaded voltages into the matrix of pixels comprises:
alternately applying a voltage to the pixel matrix with a first applied voltage or a second applied voltage at a first set interval along the direction of the data line in one frame;
and in one frame, alternately loading the voltage to the pixel matrix by the first loading voltage or the second loading voltage at a second set interval along the scanning line direction.
An embodiment of the invention also provides a display comprising a pixel matrix driving device as described in any of the above embodiments.
Compared with the prior art, the invention has the following beneficial effects:
the polarity inversion positions of the sub-pixels in two adjacent columns of the pixel matrix are different, and the sub-pixels in a certain row and the sub-pixels in a certain column are loaded with the voltage alternately by the first loading voltage or the second loading voltage, so that the phenomenon of horizontal equidistant horizontal stripes can be improved; meanwhile, according to the mode, the whitening phenomenon of the display panel in side view can be improved, so that the front view and the side view have good display quality.
Drawings
Fig. 1 is a schematic diagram of a pixel matrix driving apparatus according to an embodiment of the invention;
FIG. 2 is a schematic diagram of another pixel matrix driving apparatus according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another pixel matrix driving apparatus according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example one
Referring to fig. 1 and fig. 2, fig. 1 is a schematic diagram of a pixel matrix driving device according to an embodiment of the invention. The pixel matrix driving device provided by the embodiment comprises a pixel matrix, a time sequence controller and a driving module, wherein the pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixel in the ith column and the sub-pixel in the (i + 1) th column;
the time sequence controller is used for acquiring an initial pixel value and obtaining a first gray scale value and a second gray scale value according to the initial pixel value;
and the driving module is used for obtaining a first loading voltage according to the first gray scale value, obtaining a second loading voltage according to the second gray scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix.
The polarity inversion positions of the sub-pixels in two adjacent columns of the pixel matrix are different, and the sub-pixels in a certain row and the sub-pixels in a certain column are loaded with the voltage alternately by the first loading voltage or the second loading voltage, so that the phenomenon of horizontal equidistant horizontal stripes can be improved; meanwhile, according to the mode, the whitening phenomenon of the display panel in side view can be improved, so that the front view and the side view have good display quality.
Specifically, the pixel matrix driving device comprises a plurality of columns of data lines and a plurality of rows of scanning lines, wherein the columns of data lines are parallel to each other, the rows of scanning lines are parallel to each other, the columns of data lines and the rows of scanning lines are perpendicularly and crossly arranged, the columns of data lines and the rows of scanning lines are crossly arranged to form X rows and Y columns of sub-pixels which are arranged in a matrix mode, and the X rows and the Y columns of sub-pixels are a pixel matrix.
Specifically, the sub-pixel in the ith column and the sub-pixel in the (i + 1) th column have different polarity inversion positions, where i is a positive integer and 0< i < X.
Further, the polarity inversion position refers to a position where the polarity of the sub-pixels in any column of sub-pixels changes, and if the 1 st sub-pixel to the a th sub-pixel of the i th column of sub-pixels are all positive, that is, the polarity is positive, the a +1 th sub-pixel is negative, that is, the polarity is negative, the position of the a +1 th sub-pixel of the i th column of sub-pixels is the position where the polarity changes. And each row of sub-pixels is correspondingly connected with one scanning line.
For example, referring again to fig. 1, fig. 1 is a pixel matrix with 18 rows and 20 columns. In fig. 1, the polarity inversion positions of two adjacent columns of sub-pixels are different, for example, the polarity inversion position corresponding to the sub-pixel D1 in the 1 st column occurs at the position corresponding to the sub-pixel G2 in the 2 nd row, the polarity of the sub-pixel is negative, and the polarities of the sub-pixels corresponding to the sub-pixel G2 in the 2 nd row to the sub-pixel G17 in the 17 th row are all negative, and the polarity of the sub-pixel G18 in the 18 th row is inverted and becomes positive; and the polarity inversion position of the 2 nd column sub-pixel D2 occurs at the position corresponding to the sub-pixel of the 9 th row sub-pixel G9.
The polarity conversion positions of the sub-pixels of two adjacent columns are different, the delay effect of the RC can be reduced, the horizontal equidistant striation phenomenon can be reduced, the display quality of the display panel is improved, meanwhile, the polarity inversion driving with N being more than or equal to 4 is matched, the power consumption and the temperature generated by the driving can be reduced, the display quality of the display panel is improved, and the service life of the display panel is prolonged.
In one embodiment, the timing controller is configured to obtain an initial pixel value, form a first gray scale value and a second gray scale value according to the initial pixel value, make pixel grayscales of the first gray scale value and the second gray scale value different, generate a first loading voltage according to the first gray scale value, and generate a second loading voltage according to the second gray scale value.
Specifically, the timing controller is specifically configured to obtain an initial pixel value of each sub-pixel, and convert the initial pixel value of each sub-pixel into a first gray-scale value or a second gray-scale value according to a preset rule. The preset rule is to convert the initial pixel value into a first gray-scale value or a second gray-scale value according to the loading voltage loaded on each sub-pixel, that is, when the voltage loaded on the sub-pixel is the first loading voltage, the initial pixel value of the sub-pixel is converted into the first gray-scale value according to the preset rule, and when the voltage loaded on the sub-pixel is the second loading voltage, the initial pixel value of the sub-pixel is converted into the second gray-scale value according to the preset rule, and the converted gray-scale values are transmitted to the data driving module and the scanning driving module.
Further, after determining the rule for applying voltage to each sub-pixel position according to the embodiment, the timing controller correspondingly adjusts the initial pixel value of the sub-pixel position to be a low gray-scale value or a high gray-scale value, that is, the low gray-scale value corresponds to the first gray-scale value, the high gray-scale value corresponds to the second gray-scale value, and sends the adjusted gray-scale value to the data driving module and the scan driving module, the data driving module and the scan driving module output corresponding voltages according to the gray-scale values, that is, the data driving module outputs the first applying voltage according to the first gray-scale value to be applied to the corresponding sub-pixel position, and outputs the second applying voltage according to the second gray-scale value to be applied to the corresponding sub-pixel position.
For example, referring to fig. 2, for the sub-pixel D1 in the row 1, the initial pixel value of the sub-pixel corresponding to the sub-pixel G2 in the row 2 is 120 gray scale, and according to fig. 2, the loading voltage corresponding to the sub-pixel is the first loading voltage, i.e. a low gray scale value should be output, and after calculation, the first gray scale value is obtained according to the initial pixel value of the sub-pixel, if the first gray scale value is 110 gray scale, the sub-pixel outputs 110 gray scale correspondingly, and when the data driving module and the scan driving module receive the first gray scale value of the sub-pixel, the first loading voltage is output to the sub-pixel correspondingly according to the first gray scale value; meanwhile, for the sub-pixel D1 in the row 1, the initial pixel value of the sub-pixel corresponding to the sub-pixel G3 in the row 3 is 120 gray scale, and according to fig. 2, the loading voltage corresponding to the sub-pixel is the second loading voltage, i.e. the high gray scale value should be output, and through calculation, the second gray scale value is obtained according to the initial pixel value of the sub-pixel, if the second gray scale value is 130 gray scale, the sub-pixel correspondingly outputs 130 gray scale, and the data driving module and the scan driving module receive the second gray scale value of the sub-pixel, and correspondingly output the second loading voltage to the sub-pixel according to the second gray scale value.
The first gray scale value is regarded as a low gray scale value, the second gray scale value is regarded as a high gray scale value, correspondingly, the voltage input to the sub-pixel is determined by the gray scale, and a low gray scale voltage corresponding to the low gray scale value, namely a first loading voltage, is generated; the high gray scale voltage corresponding to the high gray scale value, i.e. the second loading voltage, is worth mentioning that the high gray scale value and the low gray scale value represent relative values of two gray scale values, and the magnitude of the values is not limited separately.
In this embodiment, a first gray scale value and a second gray scale value are obtained according to an initial pixel value of a sub-pixel, where gray scale data corresponding to the first gray scale value and the second gray scale value are different, and a voltage is loaded according to the first gray scale value and the second gray scale value corresponding to each sub-pixel, that is, the voltage is loaded to the pixel matrix alternately with the first loading voltage and the second loading voltage, and polarity inversion positions of the sub-pixels in two adjacent columns of the pixel matrix of this embodiment are different, so that crosstalk and bright and dark lines caused by simultaneous polarity inversion of the sub-pixels in the same row on the voltages loaded to the sub-pixels can be further avoided, and a horizontal equidistant striation phenomenon is further improved; meanwhile, according to the mode, the whitening phenomenon of the display panel in side view can be improved, so that the front view and the side view have good display quality.
In a specific embodiment, the driving module includes a data driving module and a scan driving module;
the data driving module is used for loading voltage to the pixel matrix by alternately loading a first loading voltage or a second loading voltage along the direction of a data line at a first set interval in one frame;
the scanning driving module is used for loading voltage to the pixel matrix by alternately loading the voltage with the first loading voltage or the second loading voltage along the scanning line direction at a second set interval in one frame.
The data driving module is used for providing data signals for the corresponding sub-pixel driving circuits, and the scanning driving module is used for providing scanning signals for the corresponding sub-pixel driving circuits.
For convenience of description, each sub-pixel is labeled, and the nth row and mth column are labeled as AnmFor example, the first row and the first column of sub-pixels are A11。
Specifically, in one frame, for a certain column of sub-pixels, for example, the nth column of sub-pixels, along the data line direction from the sub-pixel A1nTo the sub-pixel AXnAnd alternately loading the first loading voltage or the second loading voltage on the corresponding sub-pixel according to a first set interval, if the first set interval is two sub-pixels, every two sub-pixels, the voltage loaded on the sub-pixel is converted from the first loading voltage to the second loading voltage or from the second loading voltage to the first loading voltage, for example, the voltage is applied to the sub-pixel A1nAnd a sub-pixel A2nIs a first loading voltage, is applied to the sub-pixel A3nAnd a sub-pixel A4nIs a second loading voltage, is applied to the sub-pixel A5nAnd a sub-pixel A6nIs the first loading voltage, and so on.
Specifically, in one frame, for a certain row of sub-pixels, for example, the m-th row of sub-pixels, along the scanning line direction from the sub-pixel am1To the sub-pixel AmYAnd alternately loading the first loading voltage or the second loading voltage on the corresponding sub-pixel according to a second set interval, if the second set interval is every three sub-pixels, the voltage loaded on the sub-pixel is converted from the first loading voltage to the second loading voltage or from the second loading voltage to the first loading voltage, for example, the voltage is applied to the sub-pixel Am1And a sub-pixel Am3Is a first loading voltage, is applied to the sub-pixel Am4And a sub-pixel Am6Is a second loading voltage, is applied to the sub-pixel Am7And a sub-pixel Am9Is the first loading voltage, and so on.
For example, referring to FIG. 2, in a frame, along the data line direction, when the first setting is performedWhen the interval is every other sub-pixel, the scanning line G1 is connected with the sub-pixel A for the sub-pixel in the 1 st column11Sub-pixel A11The corresponding voltage is the second loading voltage, and the scanning line G2 is connected with the sub-pixel A21Sub-pixel A21The corresponding voltage is the first loading voltage, and the scanning line G3 is connected with the sub-pixel A31Sub-pixel A31The corresponding voltage is the second loading voltage, and the scanning line G4 is connected with the sub-pixel A41Sub-pixel A41The corresponding voltage is the first loading voltage, and the scanning line G5 is connected with the sub-pixel A51Sub-pixel A51The corresponding voltage is the second loading voltage, and the scanning line G6 is connected with the sub-pixel A61Sub-pixel A61The corresponding voltage is a first loading voltage, and by analogy, along the direction of the data line, every other sub-pixel alternately loads the voltage to the sub-pixel by the first loading voltage or the second loading voltage; meanwhile, in the scanning line direction, when the second set interval is every other sub-pixel, for the sub-pixel of the 1 st row, the data line D1 connects the sub-pixels a11Sub-pixel A11The corresponding voltage is the second loading voltage, and the data line D2 is connected with the sub-pixel A12Sub-pixel A12The corresponding voltage is the first loading voltage, and the data line D3 is connected with the sub-pixel A13Sub-pixel A13The corresponding voltage is the second loading voltage, and the data line D4 is connected with the sub-pixel A14Sub-pixel A14The corresponding voltage is the first loading voltage, and the data line D5 is connected with the sub-pixel A15Sub-pixel A15The corresponding voltage is the second loading voltage, and the data line D6 is connected with the sub-pixel A16Sub-pixel A16The corresponding voltage is a first loading voltage. And the like, along the scanning line direction, every other sub-pixel alternately and correspondingly loads voltage to the sub-pixel by the first driving voltage or the second driving voltage.
In this embodiment, the first setting interval and the second setting interval are set according to actual needs, and this embodiment is not particularly limited.
In a specific embodiment, the polarity of the jth sub-pixel of the ith column of sub-pixels is opposite to the polarity of the jth + Nth sub-pixels, wherein N ≧ 4.
Specifically, the polarity of the jth sub-pixel of the ith column of sub-pixels is opposite to the polarity of the (j + N) th sub-pixel, and N is the period of inversion of the polarity in each column of sub-pixels, for example, referring to fig. 1, when i takes 1, j takes 1, and N takes 16, the polarities of the 2 nd sub-pixel to the 17 th sub-pixel of the 1 st column of sub-pixels are negative, and the polarity of the 18 th sub-pixel of the 1 st column of sub-pixels is opposite, and is positive.
In a specific embodiment, the first loading voltage is smaller than the second loading voltage, and the loading voltages of the jth sub-pixel and the jth + nth sub-pixel of the ith column of sub-pixels are both the first loading voltage.
Specifically, for a certain column of sub-pixels, the loading voltage of the sub-pixel at the position where the polarity inversion occurs corresponds to the first loading voltage, for example, referring to fig. 1 and 2, when i takes 1, j takes 1, and N takes 16, for the 1 st column of sub-pixels, the position where the polarity inversion occurs is the 2 nd sub-pixel and the 18 th sub-pixel, and accordingly, the voltages applied to the 2 nd sub-pixel and the 18 th sub-pixel are both the first loading voltage.
In the embodiment, the polarity inversion positions between two adjacent rows of sub-pixels are staggered, and the first loading voltage is loaded on the sub-pixels at the polarity inversion positions, so that the problem of insufficient pixel charging caused by the RC delay effect is solved, the phenomenon of horizontal equidistant transverse stripes on the liquid crystal display panel is relieved, and the display quality of the liquid crystal display panel is improved; meanwhile, the whitening phenomenon of the display panel in side view can be further improved.
In the embodiment, the polarity conversion position is matched with the sub-pixel configured with the first loading voltage, although the brightness of the original sub-pixel is reduced, the influence caused by the polarity conversion of the pixel is not easy to see by an observer, if the polarity conversion position is matched with the sub-pixel configured with the second loading voltage, and a cluster dark spot is formed with the adjacent sub-pixel configured with the first loading voltage, so that an obvious dot phenomenon appears on a display picture, and therefore, the polarity conversion position is matched with the sub-pixel configured with the first loading voltage, a local dark spot block formed when the polarity conversion position is matched with the sub-pixel configured with the second loading voltage can be avoided, and the integral display effect is poor.
In one embodiment, the polarity of the sub-pixel in the ith column is the same as the polarity of the sub-pixel in the (i + M) th column, wherein M is a positive integer, and M ≧ 4.
Specifically, the polarity of all the sub-pixels in the ith column of sub-pixels is the same as the polarity of all the sub-pixels in the corresponding positions in the (i + M) th column of sub-pixels, i.e., the cycle period of the polarity of each column of sub-pixels in the X row and Y column of sub-pixels is M columns of sub-pixels. For example, referring to fig. 1, where M is 16, the polarity of the sub-pixel in the 1 st column is the same as the polarity of the sub-pixel in the 17 th column.
In this embodiment, the polarities of the sub-pixels in some columns in the pixel matrix are set to be the same according to a certain cycle period, and meanwhile, the first loading voltage is loaded on the sub-pixels at the positions where the polarities are reversed, so that the problem of insufficient charging of the pixels due to the RC delay effect can be further solved, the phenomenon of horizontal equidistant horizontal stripes on the display panel is further reduced, the whitening phenomenon is further improved, the display is uniform, and the display effect is improved.
Specifically, the timing controller is specifically configured to obtain an initial pixel value of each sub-pixel, and convert the initial pixel value of each sub-pixel into a first gray-scale value or a second gray-scale value according to a preset rule. The preset rule is to convert the initial pixel value into a first gray-scale value or a second gray-scale value according to the loading voltage loaded on each sub-pixel, that is, when the voltage loaded on the sub-pixel is the first loading voltage, the initial pixel value of the sub-pixel is converted into the first gray-scale value according to the preset rule, and when the voltage loaded on the sub-pixel is the second loading voltage, the initial pixel value of the sub-pixel is converted into the second gray-scale value according to the preset rule, and the converted gray-scale value is transmitted to the data driving module.
The embodiment of the invention also provides a pixel matrix driving method, wherein the pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixel in the ith row and the sub-pixel in the (i + 1) th row;
the pixel matrix driving method comprises the following steps:
acquiring an initial pixel value, and obtaining a first gray-scale value and a second gray-scale value according to the initial pixel value;
specifically, an initial pixel value of each sub-pixel is obtained, and the initial pixel value of each sub-pixel is converted into a first gray-scale value and a second gray-scale value according to a preset rule.
And acquiring an initial pixel value of each sub-pixel, and converting the initial pixel value of each sub-pixel into a first gray-scale value or a second gray-scale value according to a preset rule. The preset rule is to convert the initial pixel value into a first gray-scale value or a second gray-scale value according to the loading voltage loaded on each sub-pixel, that is, when the voltage loaded on the sub-pixel is the first loading voltage, the initial pixel value of the sub-pixel is converted into the first gray-scale value according to the preset rule, and when the voltage loaded on the sub-pixel is the second loading voltage, the initial pixel value of the sub-pixel is converted into the second gray-scale value according to the preset rule, and the gray-scale value converted by each sub-pixel is transmitted to the data driving module and the scanning driving module.
Obtaining a first loading voltage according to the first gray scale value, obtaining a second loading voltage according to the second gray scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix;
specifically, in one frame, voltages are alternately loaded to the pixel matrix by a first loading voltage or a second loading voltage along the direction of the data line at a first set interval; and in one frame, alternately loading the voltage to the pixel matrix by the first loading voltage or the second loading voltage at a second set interval along the scanning line direction.
After determining a rule for applying a voltage to each sub-pixel position according to the embodiment, correspondingly adjusting an initial pixel value of the sub-pixel position to be a low gray-scale value or a high gray-scale value, that is, the low gray-scale value corresponds to a first gray-scale value, the high gray-scale value corresponds to a second gray-scale value, and sending the adjusted gray-scale value to the data driving module and the scan driving module, and in one frame, applying the voltage to the pixel matrix alternately by using the first applying voltage or the second applying voltage according to a first set interval along the data line direction; and alternately loading the voltage to the pixel matrix by the first loading voltage or the second loading voltage at a second set interval along the scanning line direction.
The pixel matrix driving method of the embodiment enables the polarity inversion positions between two adjacent columns of sub-pixels to be staggered, and loads the first loading voltage on the sub-pixel at the polarity inversion position, so that the problem of insufficient pixel charging caused by the RC delay effect is solved, the phenomenon of horizontal equidistant cross striations on the liquid crystal display panel is relieved, and the display quality of the liquid crystal display panel is improved; meanwhile, the whitening phenomenon of the display panel in side view can be further improved.
The embodiment of the invention also provides a display, which is composed of the pixel matrix driving device of the embodiment.
In the pixel matrix of the embodiment, the polarity inversion positions of the sub-pixels in two adjacent columns are different, and the sub-pixels in a certain row and the sub-pixels in a certain column are loaded with the voltage alternately by the first loading voltage or the second loading voltage, so that the phenomenon of horizontal equidistant horizontal stripes can be improved; according to above-mentioned mode simultaneously, can improve the whitish phenomenon that display panel appears when looking sideways at, can maintain higher transmissivity simultaneously for show evenly, promoted display effect.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A pixel matrix driving device is characterized by comprising a pixel matrix, a time sequence controller and a driving module, wherein the pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixel in the ith column and the sub-pixel in the (i + 1) th column;
the time sequence controller is used for acquiring an initial pixel value and obtaining a first gray scale value and a second gray scale value according to the initial pixel value;
and the driving module is used for obtaining a first loading voltage according to the first gray scale value, obtaining a second loading voltage according to the second gray scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix.
2. The driving apparatus as claimed in claim 1, wherein the timing controller is specifically configured to obtain an initial pixel value of each sub-pixel, and convert the initial pixel value of each sub-pixel into a first gray-scale value and a second gray-scale value according to a preset rule.
3. The driving apparatus according to claim 1, wherein the driving module comprises a data driving module and a scan driving module;
the data driving module is used for loading voltage to the pixel matrix by alternately loading a first loading voltage or a second loading voltage along the direction of a data line at a first set interval in one frame;
the scanning driving module is used for loading voltage to the pixel matrix by alternately loading the voltage with the first loading voltage or the second loading voltage along the scanning line direction at a second set interval in one frame.
4. The driving apparatus as claimed in claim 1, wherein the polarity of the jth sub-pixel of the ith column of sub-pixels is opposite to the polarity of the (j + N) th sub-pixels, wherein N ≧ 4.
5. The driving apparatus as claimed in claim 1, wherein the first loading voltage is smaller than the second loading voltage, and the loading voltages of the jth sub-pixel and the jth + nth sub-pixel of the ith column of sub-pixels are both the first loading voltage.
6. The driving apparatus as claimed in claim 1, wherein the polarity of the sub-pixel in the ith column is the same as the polarity of the sub-pixel in the (i + M) th column.
7. A pixel matrix driving method is characterized in that a pixel matrix comprises a plurality of sub-pixels, and different polarity inversion positions are arranged between the sub-pixels in the ith column and the sub-pixels in the (i + 1) th column;
the pixel matrix driving method comprises the following steps:
acquiring an initial pixel value, and acquiring a first gray scale value and a second gray scale value according to the initial pixel value;
and obtaining a first loading voltage according to the first gray-scale value, obtaining a second loading voltage according to the second gray-scale value, and loading the first loading voltage and the second loading voltage to the pixel matrix.
8. The driving method according to claim 7, wherein obtaining an initial pixel value from which the first and second gray-scale values are obtained comprises:
and acquiring an initial pixel value of each sub-pixel, and converting the initial pixel value of each sub-pixel into a first gray-scale value and a second gray-scale value according to a preset rule.
9. The driving method according to claim 7, wherein applying the first applied voltage and the second applied voltage to the pixel matrix comprises:
alternately applying a voltage to the pixel matrix with a first applied voltage or a second applied voltage at a first set interval along the direction of the data line in one frame;
and in one frame, alternately loading the voltage to the pixel matrix by the first loading voltage or the second loading voltage at a second set interval along the scanning line direction.
10. A display comprising a pixel matrix driving arrangement according to any one of claims 1 to 6.
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| CN201811488784.1A CN111292692B (en) | 2018-12-06 | 2018-12-06 | Pixel matrix driving device, pixel matrix driving method and display thereof |
| US16/701,441 US11138944B2 (en) | 2018-12-06 | 2019-12-03 | Pixel matrix driving device and display device |
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