CN109949762B - Pixel matrix driving method and display device - Google Patents
Pixel matrix driving method and display device Download PDFInfo
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- CN109949762B CN109949762B CN201711392510.8A CN201711392510A CN109949762B CN 109949762 B CN109949762 B CN 109949762B CN 201711392510 A CN201711392510 A CN 201711392510A CN 109949762 B CN109949762 B CN 109949762B
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Abstract
The invention discloses a pixel matrix driving method, wherein a pixel matrix comprises a plurality of sub-pixels which are arranged in a matrix, the polarity of each two sub-pixels applied to the sub-pixels is reversed once along the direction of a data line, and the polarity of each sub-pixel applied to the sub-pixels is reversed once along the direction of a scanning line; wherein the method comprises the following steps: receiving image data, and acquiring original pixel data according to the image data; obtaining first gray scale data and second gray scale data according to the original pixel data; generating a first driving voltage corresponding to the first gray scale data and a second driving voltage corresponding to the second gray scale data according to the first gray scale data and the second gray scale data; in one frame, a first driving voltage corresponding to the first gray scale data or a second driving voltage corresponding to the second gray scale data is loaded to the pixel matrix along the direction of the data line. The invention avoids crosstalk bright and dark lines and improves the display effect.
Description
Technical Field
The invention belongs to the field of pixel matrix display, and particularly relates to a pixel matrix driving method and a display device.
Background
VA type liquid crystal panels are widely used in current display products, and at present, VA type panels are mainly classified into two types, one is MVA (Multi-domain Vertical Alignment) type, and the other is PVA (Patterned Vertical Alignment) type. The MVA technique is based on the addition of protrusions to form multiple viewing zones. The liquid crystal molecules are not completely vertically aligned in a static state, and are horizontally aligned after a voltage is applied, so that light can pass through the layers. PVA is a vertical image adjustment technology, which directly changes the structure of the liquid crystal cell, greatly improves the display performance, and can obtain a luminance output and contrast ratio superior to MVA.
However, in the conventional 4-domain VA technology, with the adjustment of the viewing angle, the VA-type liquid crystal display panel is structured to easily generate a color shift (color washout) at a large viewing angle, so that the displayed image is easily distorted, and particularly, the appearance of the skin color of a person tends to be more bluish or bright white, referring to fig. 1, as the viewing angle increases (0 °, 45 °, 60 °), the color shift is more serious, and the arrangement of 4-domains is affected by the polarity of the pixels, thereby causing the problems of crosstalk and bright and dark lines, and the display effect is poor.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a pixel matrix driving method and a display device for solving the color shift phenomenon and improving the display effect. The technical problem to be solved by the invention is realized by the following technical scheme:
a pixel matrix driving method, the pixel matrix comprises a plurality of sub-pixels arranged in a matrix, the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every sub-pixel along the direction of a scanning line; wherein the method comprises the following steps:
receiving image data, and acquiring original pixel data according to the image data;
obtaining first gray scale data and second gray scale data according to the original pixel data;
generating a first driving voltage corresponding to the first gray scale data and a second driving voltage corresponding to the second gray scale data according to the first gray scale data and the second gray scale data;
and in one frame, loading the first driving voltage or the second driving voltage to the pixel matrix along the direction of a data line.
Further, the loading the first driving voltage or the second driving voltage to the pixel matrix along a data line direction includes:
alternately loading the first driving voltage or the second driving voltage to the pixel matrix along a data line direction every other scanning line;
and alternately loading the first driving voltage or the second driving voltage to the pixel matrix along the scanning line direction every two data lines.
Further, obtaining first gray scale data and second gray scale data according to the original pixel data comprises:
and obtaining an original pixel value of each pixel position according to the original pixel data, and converting the original pixel value of each pixel position into first gray scale data or second gray scale data according to a preset conversion mode.
The invention also provides a display device, which comprises a time schedule controller, a data driving unit, a scanning driving unit and a display panel, wherein a pixel matrix is arranged on the display panel, the pixel matrix comprises a plurality of sub-pixels which are arranged in a matrix, the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a scanning line; the time sequence controller is connected with the data driving unit and the scanning driving unit, and the data driving unit and the scanning driving unit are both connected with the pixel matrix;
the time sequence controller is used for obtaining first gray scale data and second gray scale data according to the original pixel data and outputting the first gray scale data and the second gray scale data to the data driving unit;
the data driving unit is used for generating a first driving voltage according to the first gray scale data and generating a second driving voltage according to the second gray scale data;
the scanning driving unit is used for loading scanning signals to the pixel matrix;
and in one frame, the data driving unit is further used for loading a first driving voltage corresponding to the first gray scale data or a second driving voltage corresponding to the second gray scale data to the pixel matrix along the direction of the data line.
Further, the timing controller is specifically configured to obtain an original pixel value of each pixel position according to the original pixel data, and convert the original pixel value of each pixel position into first grayscale data or second grayscale data according to a predetermined conversion manner.
In another pixel matrix driving method disclosed by the invention, the pixel matrix comprises a plurality of sub-pixels arranged in a matrix, and the method is characterized in that the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every sub-pixel along the direction of a scanning line; wherein the method comprises the following steps:
receiving image data, and acquiring original pixel data according to the image data;
obtaining an original data driving signal of each pixel position according to the original pixel data;
obtaining a first driving voltage and a second driving voltage according to the original data driving signal;
and in one frame, loading the first driving voltage or the second driving voltage to the pixel matrix along the direction of a data line.
Further, obtaining a first driving voltage and a second driving voltage according to the original data driving signal includes:
obtaining the original gray-scale value and the conversion rule of the corresponding pixel position according to the original data driving signal,
and converting the original gray-scale value of the corresponding pixel position into a first driving voltage or a second driving voltage according to the conversion rule.
Further, the loading the first driving voltage or the second driving voltage to the pixel matrix in a data line direction within a frame includes:
alternately loading the first driving voltage or the second driving voltage to the pixel matrix along a data line direction every other scanning line;
and alternately loading the first driving voltage or the second driving voltage to the pixel matrix along the scanning line direction every two data lines.
The invention also discloses a display device, which comprises a time schedule controller, a data driving unit, a scanning driving unit and a display panel, wherein a pixel matrix is arranged on the display panel, the pixel matrix comprises a plurality of sub-pixels which are arranged in a matrix, the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a scanning line; the time sequence controller is connected with the data driving unit and the scanning driving unit, and the data driving unit and the scanning driving unit are both connected with the pixel matrix;
the time sequence controller is used for obtaining an original data driving signal according to the original pixel data;
the data driving unit is used for obtaining a first driving voltage and a second driving voltage according to the original data driving signal;
the scanning driving unit is used for loading scanning signals to the pixel matrix;
and in one frame, the data driving unit is further configured to load the first driving voltage or the second driving voltage to the pixel matrix along a data line direction.
Further, the data driving unit is further configured to obtain an original gray-scale value and a conversion rule of a corresponding pixel position according to an original data driving signal, and convert the original gray-scale value of the corresponding pixel position into a first driving voltage or a second driving voltage according to the conversion rule.
Compared with the prior art, the invention has the beneficial effects that:
the pixel matrix driving method provided by the invention has the advantages that the pixels in the pixel matrix are not influenced by polarity by matching the high gray scale voltage and the low gray scale voltage reasonably, the problems of crosstalk, bright and dark lines and the like are avoided, and the display effect is improved.
Drawings
FIG. 1 is a schematic diagram illustrating the variation of viewing angle with gray scale in the prior art;
fig. 2 is a flowchart of a pixel matrix driving method according to an embodiment of the invention;
FIG. 3 is a schematic view of polarity loading of a pixel matrix according to an embodiment of the present invention;
FIG. 4 is a schematic view of gray scale loading of a pixel matrix according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a sub-pixel region according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the driving method according to an embodiment of the present invention;
FIG. 7 is a schematic view of a driving method according to another embodiment of the present invention;
FIG. 8 is a schematic diagram of a display device according to an embodiment of the present 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. 2, fig. 2 is a flowchart of a pixel matrix driving method according to an embodiment of the present invention, where the pixel matrix includes a plurality of sub-pixels arranged in a matrix, a voltage applied to the sub-pixels is inverted once for every two sub-pixels along a data line direction, and a voltage applied to the sub-pixels is inverted once for each sub-pixel along a scan line direction; wherein the method comprises the following steps:
receiving image data, and acquiring original pixel data according to the image data;
obtaining first gray scale data and second gray scale data according to the original pixel data;
generating a first driving voltage corresponding to the first gray scale data and a second driving voltage corresponding to the second gray scale data according to the first gray scale data and the second gray scale data;
in one frame, a first driving voltage corresponding to the first gray scale data or a second driving voltage corresponding to the second gray scale data is loaded to the pixel matrix along the direction of the data line.
In the prior art, the original pixel data, that is, a specific pixel value displayed by each sub-pixel in a pixel matrix in each frame correspondingly, the pixel value input to each sub-pixel is directly determined by the image data input to the TCON without processing the original pixel data, which is affected by the polarity of the sub-pixels, so that the polarity of the sub-pixels is easily subjected to negative effects such as crosstalk, bright and dark lines, and the like.
In this embodiment, the original pixel data is processed to obtain further first gray scale data and second gray scale data, and the pixel gray scales of the first gray scale data and the second gray scale data are different, and then the first gray scale data and the second gray scale data are loaded onto the corresponding sub-pixels at certain arrangement intervals between different pixels or different frames.
In a specific example, the first gray scale data is regarded as high gray scale data, the second gray scale data is regarded as low gray scale data, and accordingly, the voltage input to the sub-pixels is determined by the gray scale, and a high gray scale voltage corresponding to the high gray scale data, namely, a first driving voltage is generated; it should be noted that the low gray scale voltage corresponding to the low gray scale data, i.e. the second driving voltage, represents the relative values of the two gray scales, and the values are not limited separately.
Referring to fig. 3, when viewed from a certain column, two consecutive sub-pixels have the same polarity, the polarity of the next two consecutive sub-pixels is opposite to the polarity of the previous two sub-pixels, when viewed from a certain row, the polarities of the sub-pixels are alternately inverted, and so on, when viewed from the whole, the voltages applied to the sub-pixels are inverted every two sub-pixel polarities along the data line direction, the voltages applied to the sub-pixels are inverted every sub-pixel polarity along the scan line direction, P in fig. 3 represents a positive voltage, N represents a negative voltage, when viewed from a certain column, the polarity inversion can be represented as NNPP … NNPP or PPNN … PPNN, and when viewed from a certain row, the polarity inversion can be represented as PNPN … PNPN or NPNP … NPNP.
In one embodiment, obtaining the first gray scale data and the second gray scale data according to the original pixel data includes: and obtaining an original pixel value of each pixel position according to the original pixel data, and converting the original pixel value of each pixel position into first gray scale data or second gray scale data according to a preset conversion mode.
After the gray scale to be displayed at each pixel position is correspondingly determined according to the rule of the invention, the time schedule controller correspondingly adjusts the original gray scale of the pixel position into a high gray scale or a low gray scale and sends the adjusted gray scale value to the data driving unit, and the data driving unit outputs corresponding voltage according to the gray scale value.
For example, if the original pixel value at the a position is 128 gray, and the a position should output a high gray, i.e. H, according to the above rule of the present invention, after calculation, in this example, H of 128 is 138 gray, 138 gray is output to the a position, the data driving unit receives 138 gray, and according to the predetermined conversion rule, the voltage corresponding to 138 gray is 10V, and finally the voltage signal of 10V is output to the a position. Generally, the high-low gray scale adjustment range is determined according to the material of the liquid crystal or the like.
For example, if the original pixel value at the B position is 128 gray, and the B position should output a low gray, i.e., L, according to the above rule of the present invention, the calculation is performed, in this example, if L of 128 is 118 gray, 118 gray is output to the B position, the data driving unit receives 118 gray, and according to the predetermined conversion rule, the voltage corresponding to 118 gray is 8V, and finally the voltage signal of 8V is output to the B position.
In one embodiment, the applying a first driving voltage corresponding to the first gray scale data or a second driving voltage corresponding to the second gray scale data to the pixel matrix along the data line direction includes:
alternately loading the first driving voltage or the second driving voltage to the pixel matrix along a data line direction every other scanning line;
and alternately loading the first driving voltage or the second driving voltage to the pixel matrix along the scanning line direction every two data lines.
The pixel matrix is physically divided into a plurality of small blocks arranged in a matrix by a plurality of data lines and scanning lines which are communicated in a staggered way, each small block is a sub-pixel, and every two adjacent sub-pixels are divided by a corresponding data line or scanning line. Alternately loading the first driving voltage or the second driving voltage to the pixel matrix representation along the data line direction every other scanning line, and loading different driving voltages between adjacent sub-pixels when viewed from a certain column; or, regarding a certain row, different driving voltages are loaded between every two adjacent sub-pixels; are alternately applied to the sub-pixels according to the above-mentioned relationship.
Referring to fig. 4, referring to the following example, when viewed from a certain row, the gray scale voltages applied to two consecutive sub-pixels are the same, when viewed from a certain row, the gray scale voltages applied to the sub-pixels are alternately changed, and so on, in fig. 4, H represents a high gray scale voltage, L represents a low gray scale voltage, when viewed from a certain column, the gray scale voltage change can be represented as HLHL … HLHL or lh … LHLH, and when viewed from a certain row, the gray scale voltage change can be represented as HHLL … ll hh or LLHH … LLHH.
The pixel matrix driving method provided by the invention has the advantages that the pixels in the pixel matrix are not influenced by polarity by matching the high gray scale voltage and the low gray scale voltage reasonably, the problems of crosstalk, bright and dark lines and the like are avoided, and the display effect is improved.
Example two
The embodiment of the invention also provides another pixel matrix driving method, wherein the pixel matrix comprises a plurality of sub-pixels which are arranged in a matrix, the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every sub-pixel along the direction of a scanning line; wherein the method comprises the following steps:
receiving image data, and acquiring original pixel data according to the image data;
obtaining an original data driving signal according to the original pixel data;
obtaining a first driving voltage and a second driving voltage according to the original data driving signal;
and in one frame, loading the first driving voltage or the second driving voltage to the pixel matrix along the direction of a data line.
Loading the first driving voltage or the second driving voltage to the pixel matrix along a data line direction every other scanning line;
and loading the first driving voltage or the second driving voltage to the pixel matrix along the scanning line direction by every two data lines.
In one implementation, the present embodiment generates the driving signals for driving the sub-pixels by using two different sets of gammas (gammas) to generate the driving signals for driving the sub-pixels, so that the set of original data driving signals generate two sets of driving voltages under the action of different gammas, thereby implementing the driving control of the present invention. In a specific implementation of the embodiment, the Tcon outputs a set of gray scales, and the data driving circuit generates two sets of gammas, each set of gammas respectively driving different sub-pixels, thereby achieving the same technical effect as the embodiment.
In one embodiment, obtaining the first driving voltage and the second driving voltage according to the original data driving signal includes: the method comprises the steps of obtaining an original gray-scale value and a conversion rule of a corresponding pixel position according to an original data driving signal, and converting the original gray-scale value of the corresponding pixel position into a first driving voltage or a second driving voltage according to the conversion rule.
The method of the invention does not directly carry out gray scale conversion in the time sequence controller, and sends the original gray scale value and the conversion rule of the corresponding H or L to the data driving unit, and the data driving unit directly outputs the corresponding driving voltage according to the original gray scale value and the corresponding H or L according to the rule. Generally, the high-low gray scale adjustment range is determined according to the material of the liquid crystal or the like.
For example, in one embodiment, if the original pixel value at the a position is 128 gray levels, the a position is output 128 gray levels, and the a position is H according to the conversion rule, after the driving circuit receives the 128 gray levels, the corresponding voltage 10V is found in the voltage conversion table corresponding to the gray level of H, and finally the driving voltage signal of 10V is output to the a position.
For example, if the original pixel value at the B position is 128 gray levels, the B position is output 128 gray levels, and after the L driving circuit receives the 128 gray levels according to the conversion rule, the corresponding voltage 8V is found in the corresponding voltage conversion table corresponding to the gray levels of L, and finally, the data signal of 8V is output to the a position.
EXAMPLE III
In a specific embodiment, corresponding to one of the above solutions, in order to show the solution of the present invention more clearly, the pixel matrix includes a plurality of sub-pixel regions, each of the sub-pixel regions includes:
a first sub-pixel;
a second sub-pixel adjacent to the first sub-pixel along a scan line direction;
a third sub-pixel adjacent to the second sub-pixel along a scan line direction;
a fourth sub-pixel adjacent to the third sub-pixel along a scan line direction;
a fifth sub-pixel adjacent to the first sub-pixel in a data line direction;
a sixth subpixel adjacent to the second subpixel in a data line direction;
a seventh sub-pixel adjacent to the third sub-pixel in a data line direction;
an eighth subpixel adjacent to the fourth subpixel in a data line direction;
the first data line is electrically connected with the first sub-pixel and the fifth sub-pixel;
a second data line electrically connected to the second subpixel and the sixth subpixel;
a third data line electrically connected to the third subpixel and the seventh subpixel;
and the fourth data line is electrically connected with the fourth sub-pixel and the eighth sub-pixel.
Referring to fig. 5, the area denoted by the symbol a is denoted as a sub-pixel area, each sub-pixel area includes eight sub-pixels, which are divided into two upper rows and two lower rows, and each row includes four sub-pixels, wherein the first pixel a1, the second pixel a2, the third pixel A3, and the fourth pixel a4 are in one row, and the fifth pixel a5, the sixth pixel a6, the seventh pixel a7, and the eighth pixel A8 are in the next row opposite to the upper row. The pixel matrix is filled with several sub-pixel regions in sequence. The first data line is connected to the first pixel a1 and the fifth pixel a5, the second data line is connected to the second pixel a2 and the sixth pixel a6, the third data line is connected to the third pixel A3 and the seventh pixel a7, and the fourth data line is connected to the fourth pixel a4 and the eighth pixel A8.
In one embodiment, the polarity of the voltage applied to the first pixel a1, the third pixel A3, the sixth pixel a6 and the eighth pixel A8 is the same, and is opposite to the polarity of the voltage applied to the second pixel a2, the fourth pixel a4, the fifth pixel a5 and the seventh pixel a 7.
The gray scales of voltages applied to the first pixel a1, the second pixel a2, the seventh pixel a7 and the eighth pixel A8 are different from those applied to the third pixel A3, the fourth pixel a4, the fifth pixel a5 and the sixth pixel a 6.
According to the above matching relationship between the voltage polarity and the voltage gray scale loaded on the sub-pixel, a specific embodiment is shown, in one frame, a negative polarity high gray scale voltage, which can be denoted as HN, is loaded on the first pixel a 1; loading a positive polarity high grayscale voltage, which may be denoted as HP, to the second pixel a 2; -loading said third pixel a3 with a negative polarity low gray scale voltage, which may be denoted LN; loading the fourth pixel a4 with a positive polarity low gray scale voltage, which may be denoted as LP; loading the fifth pixel a5 with a positive polarity low gray scale voltage, which may be denoted as LP; -applying a negative polarity low gray scale voltage, which may be denoted LN, to said sixth pixel a 6; loading a positive polarity high grayscale voltage, which may be denoted as HP, to the seventh pixel a 7; the eighth pixel A8 is loaded with a negative polarity high grayscale voltage, which may be denoted as HN.
For more clear description of the voltage loading relationship, the voltage loading relationship for each sub-pixel in any column is sequentially expressed as follows: HN, LP, HP, LN, HN, LP, HP and LN … circulate in sequence or HP, LN, HN, LP, HP, LN, HN and LP … circulate in sequence; from a certain row, the voltage relationship loaded for each sub-pixel in any row is sequentially expressed as: HN, HP, LN, LP, HN, HP, LN, LP … circulate in sequence or LP, LN, HP, HN, LP, LN, HP, HN … circulate in sequence.
Alternatively, a positive polarity high grayscale voltage, which may be denoted as HP, is applied to the first pixel a 1; loading a negative polarity high grayscale voltage, denoted as HN, to the second pixel a 2; loading the third pixel a3 with a positive polarity low gray scale voltage, which may be denoted as LP; -applying a negative polarity low gray scale voltage, which may be denoted LN, to said fourth pixel a 4; -applying a negative polarity low gray scale voltage, which may be denoted LN, to said fifth pixel a 5; loading the sixth pixel a6 with a positive polarity low gray scale voltage, which may be denoted as LP; loading a negative polarity high grayscale voltage, which may be denoted as HN, to the seventh pixel a 7; the eighth pixel A8 is loaded with a positive polarity high grayscale voltage, which may be denoted as HP.
For more clear description of the voltage loading relationship, the voltage loading relationship for each sub-pixel in any column is sequentially expressed as follows: HP, LN, HN, LP, HP, LN … circulate in turn or HN, LP, HP, LN, HN, LP, HP, LN … circulate in turn; from a certain row, the voltage relationship loaded for each sub-pixel in any row is sequentially expressed as: HP, HN, LP, LN, HP, HN, LP, LN … circulate in sequence or LN, LP, HN, HP, LN, LP, HN, HP … circulate in sequence.
In another embodiment, the polarities of the voltages applied to the first pixel a1, the third pixel A3, the fifth pixel a5 and the seventh pixel a7 are the same, and are opposite to the polarities of the voltages applied to the second pixel a2, the fourth pixel a4, the sixth pixel A6 and the eighth pixel A8, and the gray scales of the voltages applied to the first pixel a1, the second pixel a2, the seventh pixel a7 and the eighth pixel A8 are different from the gray scales of the voltages applied to the third pixel A3, the fourth pixel a4, the fifth pixel a5 and the sixth pixel A6. The driving method can obtain the relationship of gray scale voltage loaded on the pixel again according to the above example, and the description is omitted again.
Example four
Referring to fig. 6 and 7 together, in an optional 4 × 4 area, in the first column, the first pixel a1, the fifth pixel a5, the ninth pixel a9 and the thirteenth pixel a13 are connected to the first data line, in the second column, the second pixel a2, the sixth pixel A6, the tenth pixel a10 and the fourteenth pixel a14 are connected to the second data line, in the third column, the third pixel A3, the seventh pixel a7, the eleventh pixel a11 and the fifteenth pixel a15 are connected to the third data line, and in the fourth column, the fourth pixel a4, the eighth pixel A8, the twelfth pixel a12 and the sixteenth pixel a16 are connected to the fourth data line.
At a first time in a frame, a scan signal is loaded on a first row scan line, and a voltage corresponding to HN is loaded to a first pixel a1 on a first data line, a voltage corresponding to HP is loaded to a second pixel a2 on a second data line, a voltage corresponding to LN is loaded to a third pixel A3 on a third data line, a voltage corresponding to LP is loaded to a fourth pixel a4 on a fourth data line, and so on;
at the next time (i.e., the second time), a scan signal is applied to the scan line of the second row, and a voltage corresponding to LP is applied to the fifth pixel a5 on the first data line, a voltage corresponding to LN is applied to the sixth pixel a6 on the second data line, a voltage corresponding to HP is applied to the seventh pixel a7 on the third data line, and a voltage corresponding to HN is applied to the eighth pixel A8 on the fourth data line;
at the next time (i.e. the third time), a scan signal is loaded to the scan line of the third row, and a voltage corresponding to HP is loaded to the ninth pixel a9 on the first data line, a voltage corresponding to HN is loaded to the tenth pixel a10 on the second data line, a voltage corresponding to LP is loaded to the eleventh pixel a11 on the third data line, and a voltage corresponding to LN is loaded to the twelfth pixel a12 on the fourth data line;
at the next time (i.e., the fourth time), the scan signal is applied to the scan line of the fourth row, and the voltage corresponding to LN is applied to the thirteenth pixel a13 on the first data line, the voltage corresponding to LP is applied to the fourteenth pixel a14 on the second data line, the voltage corresponding to HN is applied to the fifteenth pixel a15 on the third data line, and the voltage corresponding to HP is applied to the sixteenth pixel a16 on the fourth data line. In this embodiment, the voltage loading case of 4 × 4 is exemplified, and the voltages are sequentially loaded to other sub-pixels and other time points according to the above rule.
By adopting the embodiment of the invention, the positive and negative polarity voltages and the high and low gray scale voltages are loaded to the pixel matrix alternately, so that the side visibility can be improved, the pixels in the pixel matrix are not influenced by the polarity, the problems of crosstalk, bright and dark lines and the like are solved, and the display effect is improved.
EXAMPLE five
Referring to fig. 8, the present invention also provides a display device for performing the method according to the present invention, including a timing controller 81, a data driving unit 82, a scan driving unit 83, and a display panel 84, wherein the display panel 84 has a pixel matrix 85 disposed thereon; the timing controller 81 is connected to the data driving unit 82 and the scan driving unit 83, and both the data driving unit 82 and the scan driving unit 83 are connected to the pixel matrix 85;
the timing controller 81 is configured to output first gray scale data and second gray scale data to the data driving unit 82;
the data driving unit 82 is configured to generate a first driving voltage according to the first gray scale data, and generate a second driving voltage according to the second gray scale data;
the scan driving unit 83 is used for loading scan signals to the pixel matrix 85;
and the data driving unit 82 is further configured to apply a first driving voltage corresponding to the first gray-scale data or a second driving voltage corresponding to the second gray-scale data to the pixel matrix 85 along the data line direction within one frame.
In one embodiment, the timing controller is specifically configured to obtain an original pixel value of each pixel position according to the original pixel data, and convert the original pixel value of each pixel position into the first grayscale data or the second grayscale data according to a predetermined conversion manner.
The display panel 84 includes a plurality of data lines, a plurality of scan lines, and a plurality of sub-pixels connected to the data lines and the scan lines, the sub-pixels being arranged in a pixel matrix 85 along a data line direction and along a scan line direction on the display panel, the timing controller 81 inputs RGB data signals of an image from the outside,
the timing controller 81 can input red image data R, green image data G, blue image data B, or image data of other colors from the outside, and generate corresponding original pixel data according to the image data, and make the original pixel data correspond to two sets of gray scales, high gray scale data, and low gray scale data according to the above-described rule of the present invention. The data driving circuit converts the high gray scale data and the low gray scale data respectively by using a fixed gamma and outputs corresponding high gray scale voltage and low gray scale voltage. The data driving unit 82 controls the specific output operation according to the above method of the present invention, and outputs of high gray scale, low gray scale, positive voltage, and negative voltage are selected according to the timing.
In another implementation, the display device includes a timing controller 81, a data driving unit 82, a scan driving unit 83, and a display panel 84, where a pixel matrix 85 is disposed on the display panel 84; the timing controller 81 is connected to the data driving unit 82 and the scan driving unit 83, and both the data driving unit 82 and the scan driving unit 83 are connected to the pixel matrix 85;
the timing controller 81 is configured to obtain an original data driving signal according to the original pixel data;
the data driving unit 82 is configured to obtain a first driving voltage and a second driving voltage according to the original data driving signal;
the scan driving unit 83 is used for loading scan signals to the pixel matrix 85;
and within a frame, the data driving unit 82 is further configured to apply the first driving voltage or the second driving voltage to the pixel matrix 85 along a data line direction.
The data driving unit is further used for obtaining an original gray-scale value and a conversion rule of a corresponding pixel position according to an original data driving signal, and converting the original gray-scale value of the corresponding pixel position into a first driving voltage or a second driving voltage according to the conversion rule.
The timing controller 81 inputs image data from the outside, generates corresponding original pixel data according to the image data, and outputs an original data driving signal to the data driving circuit, and the data driving circuit correspondingly generates a high gray scale voltage of high gamma and a low gray scale voltage of low gamma through two different sets of gamma because the data driving circuit only receives the original gray scale value and a corresponding H or L conversion rule. The data driving unit 82 controls the specific output operation according to the above method of the present invention, and outputs of high gray scale, low gray scale, positive voltage, and negative voltage are selected according to the timing.
The foregoing is a further detailed description of the invention in connection with specific preferred embodiments and it is not intended to limit the invention to the specific embodiments described. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (2)
1. A pixel matrix driving method, the pixel matrix includes a plurality of sub-pixels arranged in a matrix, characterized in that, the voltage applied to the sub-pixels reverses polarity every two sub-pixels along the data line direction, and the voltage applied to the sub-pixels reverses polarity every sub-pixel along the scanning line direction; wherein the method comprises the following steps:
receiving image data, and acquiring original pixel data according to the image data;
obtaining an original data driving signal of each pixel position according to the original pixel data;
obtaining an original gray-scale value of a corresponding pixel position according to the original data driving signal;
converting the original gray-scale value of the corresponding pixel position into driving voltages by using two groups of different gammas, wherein each group of gammas respectively and correspondingly drives different sub-pixels, and the driving voltages comprise a first driving voltage and a second driving voltage;
alternately loading the first driving voltage or the second driving voltage to the pixel matrix along every other scanning line along the direction of a data line in one frame; and alternately loading the first driving voltage or the second driving voltage to the pixel matrix along every two data lines in the direction of a scanning line.
2. A display device comprises a time schedule controller, a data driving unit, a scanning driving unit and a display panel, and is characterized in that a pixel matrix is arranged on the display panel, the pixel matrix comprises a plurality of sub-pixels which are arranged in a matrix, the polarity of the voltage applied to the sub-pixels is reversed once every two sub-pixels along the direction of a data line, and the polarity of the voltage applied to the sub-pixels is reversed once every sub-pixel along the direction of a scanning line; the time sequence controller is connected with the data driving unit and the scanning driving unit, and the data driving unit and the scanning driving unit are both connected with the pixel matrix;
the time sequence controller is used for obtaining an original data driving signal according to original pixel data;
the data driving unit is used for obtaining an original gray-scale value of a corresponding pixel position according to an original data driving signal;
converting the original gray-scale value of the corresponding pixel position into driving voltages by using two groups of different gammas, wherein each group of gammas respectively and correspondingly drives different sub-pixels, and the driving voltages comprise a first driving voltage and a second driving voltage;
the scanning driving unit is used for loading scanning signals to the pixel matrix;
and in one frame, the data driving unit is further configured to alternately load the first driving voltage or the second driving voltage to the pixel matrix along a data line direction every other scanning line; and alternately loading the first driving voltage or the second driving voltage to the pixel matrix along every two data lines along the scanning line direction.
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