CN109613767B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN109613767B CN109613767B CN201811570748.XA CN201811570748A CN109613767B CN 109613767 B CN109613767 B CN 109613767B CN 201811570748 A CN201811570748 A CN 201811570748A CN 109613767 B CN109613767 B CN 109613767B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The application relates to a display panel and a display device, which comprise a plurality of columns of data lines and a pixel array, wherein each data line is connected with a driving signal with fixed polarity, the polarities of any two adjacent data lines connected with the driving signals are opposite, the pixel array comprises a plurality of pixel units, each pixel unit comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel which are positioned in the same column and are adjacently arranged, one part of sub-pixels in the same column are connected with the adjacent data lines on one side, and the other part of sub-pixels are connected with the adjacent data lines on the other side. A part of the sub-pixels in the same column is connected with the data line on one side to obtain positive voltage, and the other part of the sub-pixels in the same column is connected with the data line on the other side to obtain negative voltage, so that the polarity of the liquid crystal driving voltage is ensured to be inverted, and meanwhile, the polarity of the driving signal is not required to be inverted, and the driving power consumption is reduced.
Description
Technical Field
The present application relates to the field of display, and in particular, to a display panel and a display device.
Background
In the liquid crystal display panel, a pixel array is connected with a driving signal to provide a driving voltage for liquid crystal, and the driving voltage is changed to control the rotation direction of the liquid crystal, so that the light transmittance of the liquid crystal is controlled, and the display panel presents pictures with different gray scales. If the driving voltage applied to the liquid crystal is continuously the same polarity, the internal structure of the liquid crystal layer will be damaged, resulting in poor display quality. Because the turning direction of the liquid crystal is only related to the potential difference at two sides of the liquid crystal and is not related to the driving polarity of the voltage, the polarity of the accessed driving signal is usually inverted within a certain period, that is, the driving signal is an alternating current signal, so as to ensure the stable property of the liquid crystal layer, but the power consumption of the display panel is greatly increased by periodically inverting the polarity of the driving signal.
Disclosure of Invention
Accordingly, it is necessary to solve the problem of large power consumption caused by polarity inversion of a display panel driving signal, and a new display panel and a new display device are proposed.
A display panel, comprising:
each data line is connected with a driving signal with fixed polarity, and the polarities of any two adjacent data lines connected with the driving signals are opposite;
the pixel array comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, the sub-pixels in the same pixel unit are in the same column, one part of the sub-pixels in the same column are connected with the adjacent data lines on one side, and the other part of the sub-pixels are connected with the adjacent data lines on the other side.
In the display panel, because the polarities of the driving signals connected with the data lines are alternately arranged, namely, the data line on one side of the pixel column inputs a positive voltage, the data line on the other side inputs a negative voltage, one part of the sub-pixels in the pixel column is connected with the data line on one side to obtain the positive voltage, and the other part of the sub-pixels is connected with the data line on the other side to obtain the negative voltage, when the pixel array scans row by row, the polarity of the driving voltage applied to the liquid crystal is reversed to maintain the stability of the property of the liquid crystal layer. Meanwhile, in the driving process, the polarity of the driving signal input into the data line does not need to be reversed any more, and only direct-current voltage is connected, so that the driving power consumption of the display panel is greatly reduced.
In one embodiment, the sub-pixels in the same scanning row in the pixel array are of the same type, and the polarities of the driving signals received by all the sub-pixels in the same column are mutually cancelled.
In one embodiment, the pixel array includes first and second pixel unit groups in the same column and alternately arranged, the first and second pixel unit groups include the same number of pixel units, and the polarities of the driving signals received by the first and second pixel unit groups are opposite.
In one embodiment, the first pixel unit group comprises first to fourth pixel units, the second pixel unit group comprises fifth to eighth pixel units, the polarities of the driving signals received by the first pixel units are positive-negative, the polarities of the driving signals received by the second pixel units are negative-positive, the polarities of the driving signals received by the third pixel units are positive-positive, the polarities of the driving signals received by the fourth pixel units are negative-negative, the polarities of the driving signals received by the fifth pixel unit and the first pixel unit are opposite, the polarities of the driving signals received by the sixth pixel unit and the second pixel unit are opposite, and the polarities of the driving signals received by the seventh pixel unit and the third pixel unit are opposite, the eighth pixel unit and the fourth pixel unit are connected with driving signals with opposite polarities.
In one embodiment, the first pixel unit group includes a ninth pixel unit and a tenth pixel unit, the second pixel unit group includes an eleventh pixel unit and a twelfth pixel unit, the ninth pixel unit is connected with the driving signals with positive-negative polarities, the tenth pixel unit is connected with the driving signals with positive-negative polarities, the eleventh pixel unit is connected with the driving signals with opposite polarities, and the twelfth pixel unit is connected with the tenth pixel unit with opposite polarities.
In one embodiment, one of the two adjacent pixel units is connected with a relatively high voltage of the driving signal, and the other pixel unit is connected with a relatively low voltage of the driving signal.
In one embodiment, the method further comprises the following steps:
and the source electrode driving circuit is used for providing driving signals for the data lines.
A display panel, comprising:
each data line is connected with a driving signal with fixed polarity, and the polarities of the adjacent data lines connected with the driving signals are opposite;
the pixel array comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, the sub-pixels in the same pixel unit are in the same column, the sub-pixels in the same column comprise a first pixel unit group and a second pixel unit group which are alternately arranged, the first pixel unit group comprises a ninth pixel unit and a tenth pixel unit, the second pixel unit group comprises an eleventh pixel unit and a twelfth pixel unit, the polarities of driving signals received by the ninth pixel unit are respectively positive-negative, the polarities of driving signals received by the tenth pixel unit are respectively positive-negative, the polarities of the driving signals received by the eleventh pixel unit and the ninth pixel unit are opposite, the polarities of the driving signals received by the twelfth pixel unit and the tenth pixel unit are opposite, and the sub-pixels connected with the driving signals in the same column are connected with a data line on the positive side, the sub-pixels connected with the negative polarity driving signals in the sub-pixels in the same column are connected with the data lines on the other side, the voltage of the driving signals connected with one pixel unit in any two adjacent pixel units is relatively high, and the voltage of the driving signals connected with the other pixel unit is relatively low.
The display panel adopts a driving method of alternately driving high voltage and low voltage, the polarity of the driving voltage applied to the liquid crystal is periodically changed, the polarity of the high voltage in the pixels with the same color is mutually offset, the polarity of the low voltage is mutually offset, the brightness of a display picture can be more uniform, the color cast is reduced, and the display picture quality is improved. Meanwhile, the sub-pixel needing to be connected with the positive voltage is connected with the data line with the positive voltage signal input at one side and the sub-pixel needing to be connected with the negative voltage is connected with the data line with the negative voltage signal input at one side by changing the connection mode of the pixel array and the data line, so that the polarity inversion of the driving voltage applied to the liquid crystal layer is ensured, the polarity inversion of the driving signal input in the data line is not needed, and the driving power consumption is greatly reduced.
A display device comprises the display panel.
According to the display device, in the driving process of the display panel, the driving signal does not need to be inverted, the driving voltage of the liquid crystal layer can be inverted, the stability of the liquid crystal layer can be maintained, and the power consumption of a product can be reduced.
Drawings
FIG. 1 is a partial schematic view of a display panel driving frame according to an embodiment;
FIG. 2 is a circuit diagram of the display panel driving frame of FIG. 1;
FIG. 3 is a partial view of a display panel driving frame according to another embodiment;
FIG. 4 is a diagram of an embodiment of voltage distributions corresponding to sub-pixels in the display panel driving frame of FIG. 3;
FIG. 5 is a voltage distribution diagram of sub-pixels in a driving frame corresponding to the display panel of FIG. 3 according to another embodiment;
FIG. 6 is a partial view of a display panel driving frame according to yet another embodiment;
FIG. 7 is a graph illustrating voltage distributions of sub-pixels in a driving frame corresponding to the display panel of FIG. 6 according to an embodiment;
FIG. 8 is a voltage distribution diagram of sub-pixels corresponding to the driving frame of the display panel of FIG. 6 in another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present application, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on methods or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In one embodiment, as shown in fig. 1, the display panel includes a plurality of columns of data lines 100 and a pixel array 200, and the pixel array 200 includes a plurality of pixel units a. Each data line is connected to a driving signal with a fixed polarity, and the polarities of the driving signals connected to any two adjacent data lines in the multiple rows of data lines 100 are opposite, that is, one data line of any two adjacent data lines is connected to a positive voltage, the other data line is connected to a negative voltage, for example, the polarities of the driving voltages connected to the first to seventh data lines D1 to D7 are + - + - +, respectively, the polarity of the driving signals connected to the same data line is kept unchanged during the display of the image, that is, the driving signals connected to the data lines can be dc voltages. The pixel unit a includes a plurality of sub-pixels, and each sub-pixel in the same pixel unit is in the same column, and the pixel unit may specifically include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B that are in the same column and are adjacently disposed, where a combination manner of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B may be flexibly disposed, that is, relative positions of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B may be flexibly changed, and may be sequentially arranged as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, or may be sequentially arranged as a blue sub-pixel, a green sub-pixel, and a red sub-pixel, or may be sequentially arranged as a green sub-pixel, a red sub-pixel, and a blue sub-pixel, or may be in other combination manners. And part of the sub-pixels in the same column of sub-pixels are connected with the data line on one side of the column of sub-pixels, and the other part of the sub-pixels are connected with the data line on the other side of the column of sub-pixels. It can be understood that the display panel further includes a plurality of scan lines 300, the scan lines 300 are disposed in a crisscross manner with the data lines 100, the sub-pixels in the same row in the pixel array are connected to the same scan line, for example, the first to sixth scan lines G1 to G6 are respectively connected to the sub-pixels in the first to sixth rows, and the scan lines are used to sequentially input scan signals to the respective rows, so that the sub-pixels in the respective rows are sequentially turned on to obtain the driving signals corresponding to the data lines, thereby controlling the rotation direction of the liquid crystal.
In this embodiment, since the polarities of the driving signals received by the data lines are alternately arranged, and a part of sub-pixels in the pixel column between two adjacent data lines are connected to the data line on one side to obtain a positive voltage, and another part of sub-pixels are connected to the data line on the other side to obtain a negative voltage, when the pixel array scans row by row, the polarity of the driving voltage applied to the liquid crystal is inverted to maintain the stability of the properties of the liquid crystal layer. Meanwhile, in the embodiment, by designing the display panel driving frame, the data line on one side of the sub-pixel is connected with a positive voltage, the data line on the other side of the sub-pixel is connected with a negative voltage, the sub-pixel needing to input the positive voltage is connected with the data line with the positive voltage on one side, and the sub-pixel needing to input the negative voltage is connected with the data line with the negative voltage on the other side.
As shown in fig. 2, each sub-pixel in the pixel array is connected to a data line and a scan line, specifically, a gate of a thin film transistor is connected to the scan line, a source of the thin film transistor is connected to the data line, the thin film transistor is located on one side of the liquid crystal layer, the common electrode is located on the other side of the liquid crystal layer, the gate of the thin film transistor is turned on after receiving a scan signal, one side of the liquid crystal layer is connected to the source to obtain a driving voltage, and the driving voltage and the voltage of the common electrode form a potential difference to rotate the liquid crystal.
In one embodiment, as shown in fig. 1, the sub-pixels in the same scan line in the pixel array 200 are of the same type, that is, the sub-pixels in the scan line with red sub-pixels are all red sub-pixels, the scan line with green sub-pixels are all green sub-pixels, and the scan line with blue sub-pixels are all blue sub-pixels. The sub-pixels in the same scanning line have the same type, so that the difficulty in preparing the color set of the display panel can be reduced.
In one embodiment, the polarities of the driving signals received by the same-color sub-pixels in the same column are mutually offset, the same-color sub-pixels refer to sub-pixels of the same color group, that is, the number of the red sub-pixels connected with the positive voltage in the same column is equal to that of the red sub-pixels connected with the negative voltage, the number of the green sub-pixels connected with the positive voltage in the same column is equal to that of the green sub-pixels connected with the negative voltage, the number of the blue sub-pixels connected with the positive voltage in the same column is equal to that of the blue sub-pixels connected with the negative voltage, and the polarities of the driving signals received by the same-color sub-pixels in the same column are mutually offset, so that the color.
In an embodiment, the pixel array includes a first pixel unit group and a second pixel unit group which are in the same column and are alternately arranged, the number of pixel units included in the first pixel unit group is equal to the number of pixel units included in the second pixel unit group, the polarity of the first pixel unit group is opposite to the polarity of the second pixel unit group, and the first pixel unit group and the second pixel unit group are alternately arranged, so that the polarities of the same-color sub-pixels in the same column of pixels are mutually cancelled. As shown in fig. 3, which is a partial schematic view of a driving frame, only a part of sub-pixels are shown, and only one first pixel unit group 210 and one second pixel unit group 220 are shown in the same column, it can be understood that a plurality of first pixel unit groups 210 and a plurality of second pixel unit groups 220 should be included in the whole pixel column, and the first pixel unit groups 210 and the second pixel unit groups 220 are alternately arranged. The pixel arrays are arranged periodically, so that the arrangement of the arrays is more regular, the brightness of a displayed picture is more uniform, and the color cast is reduced.
In one embodiment, as shown in fig. 3, the first pixel unit group 210 includes a first pixel unit 211, a second pixel unit 212, a third pixel unit 213 and a fourth pixel unit 214, the second pixel unit group 220 includes a fifth pixel unit 221, a sixth pixel unit 222, a seventh pixel unit 223 and an eighth pixel unit 224, wherein the polarities of the driving signals received by the first pixel unit 211 are positive-negative, the polarities of the driving signals received by the second pixel unit 212 are negative-positive, the polarities of the driving signals received by the third pixel unit 213 are positive-positive, the polarities of the driving signals received by the fourth pixel unit 214 are negative-negative, the polarity of the driving signals received by the fifth pixel unit 221 is opposite to that of the first pixel unit 211, that is, the polarity of the driving signal received by the fifth pixel unit 221 is negative-positive, the polarity of the driving signal received by the sixth pixel unit 222 is opposite to that of the driving signal received by the second pixel unit 212, i.e., the polarity of the driving signal received by the sixth pixel unit 222 is positive-negative, the polarity of the driving signal received by the seventh pixel unit 223 is opposite to that of the driving signal received by the third pixel unit 213, i.e., the polarity of the driving signal received by the seventh pixel unit 223 is negative-positive, and the polarity of the driving signal received by the eighth pixel unit 224 is opposite to that of the driving signal received by the fourth pixel unit 214, i.e., the polarity of the driving signal received by the eighth pixel unit 224 is positive-positive. In this embodiment, the number of the red subpixels connected to the positive voltage is 4, the number of the red subpixels connected to the negative voltage is also 4, and the positive and negative polarities of the red subpixels are offset. The number of the green sub-pixels connected with the positive voltage is 4, the number of the green sub-pixels connected with the negative voltage is also 4, and the positive polarity and the negative polarity of the green sub-pixels are mutually offset. The number of the blue sub-pixels connected with the positive voltage is 4, the number of the blue sub-pixels connected with the negative voltage is also 4, and the positive polarity and the negative polarity of the blue sub-pixels are mutually offset. The polarities of the voltages connected with the same-color sub-pixels are mutually offset, so that the color cast is reduced, and the display image quality is improved. Meanwhile, the pixel arrays are arranged in the mode of the embodiment, in the same column, the first row and the last three rows are positive voltages, the middle row is alternately arranged with four positive voltages and four negative voltages, and the polarity of the driving voltage applied to the liquid crystal is periodically changed, so that the brightness of a displayed picture is more uniform, and the display picture quality is improved.
In one embodiment, one of the two adjacent pixel units receives a relatively high voltage of the driving signal, and the other pixel unit receives a relatively low voltage of the driving signal, where the relatively high voltage is that the voltage of the driving signal is higher than a set threshold, and the relatively low voltage is that the voltage of the driving signal is lower than the set threshold, where the threshold is a voltage value required for normally driving one of the sub-pixels. Fig. 4 is a voltage distribution diagram corresponding to the driving frame of fig. 3, where H refers to a relatively high voltage, L refers to a relatively low voltage, each sub-pixel in the first pixel unit 211, the third pixel unit 213, the fifth pixel unit 221, and the seventh pixel unit 223 in one column of the pixel array is connected to a relatively high voltage driving signal, each sub-pixel in the second pixel unit 212, the fourth pixel unit 214, the sixth pixel unit 222, and the eighth pixel unit 224 is connected to a relatively low voltage driving signal, and adjacent columns are arranged in an opposite manner. In the present embodiment, in the first pixel cell group 210 and the second pixel cell group 220, as shown in table one, 2 of the blue sub-pixels input higher positive voltages, 2 of the blue sub-pixels input higher negative voltages, i.e., the polarities of the higher voltages in the blue sub-pixels cancel each other out, 2 of the blue sub-pixels input lower positive voltages, and 2 of the blue sub-pixels input lower negative voltages, i.e., the polarities of the lower voltages in the blue sub-pixels cancel each other out; similarly, the polarities of the higher voltages in the green sub-pixels cancel each other out, and the polarities of the lower voltages cancel each other out; the polarities of the higher voltages in the red sub-pixel cancel each other out and the polarities of the lower voltages cancel each other out. The driving method of alternately driving high voltage and low voltage is adopted, the high voltage polarities in the pixels with the same color are mutually offset, the low voltage polarities are mutually offset, the brightness of a display picture can be more uniform, the color cast is reduced, and the display picture quality is improved.
In an embodiment, the driving manner using high and low voltages may be that one of the two adjacent pixel units receives a relatively high driving signal, and the other one of the two adjacent pixel units receives a relatively low driving signal, as shown in fig. 5, another voltage distribution diagram corresponding to the driving frame of fig. 3 is shown, in the first pixel unit group 210 and the second pixel unit group 220, wherein, in the blue sub-pixels, 2 input higher positive voltages, 2 input higher negative voltages, that is, polarities of higher voltages in the blue sub-pixels cancel each other, 2 input lower positive voltages, and 2 input lower negative voltages, that is, polarities of lower voltages in the blue sub-pixels cancel each other; similarly, the polarities of the higher voltages in the green sub-pixels cancel each other out, and the polarities of the lower voltages cancel each other out; the polarities of the higher voltages in the red sub-pixel cancel each other out and the polarities of the lower voltages cancel each other out.
In one embodiment, as shown in fig. 6, the first pixel cell group 210 includes a ninth pixel cell 215 and a tenth pixel cell 216, and the second pixel cell group 220 includes an eleventh pixel cell 225 and a twelfth pixel cell 226, wherein the polarity of the driving signal received by the ninth pixel cell 215 is positive-negative, the polarity of the driving signal received by the tenth pixel cell 216 is positive-negative, respectively, the polarity of the driving signal received by the eleventh pixel cell 225 is opposite to that of the ninth pixel cell 215, that is, the polarity of the driving signal received by the eleventh pixel cell 225 is negative-positive, respectively, and the polarity of the driving signal received by the twelfth pixel cell 226 is opposite to that of the tenth pixel cell 216, that is, the polarity of the driving signal received by the twelfth pixel cell 226 is negative-positive, respectively. In this embodiment, the number of the red sub-pixels connected to the positive voltage is 2, the number of the red sub-pixels connected to the negative voltage is also 2, and the positive and negative polarities of the red sub-pixels are offset. The number of the green sub-pixels connected with the positive voltage is 2, the number of the green sub-pixels connected with the negative voltage is 2, and the positive polarity and the negative polarity of the green sub-pixels are mutually offset. The number of the blue sub-pixels connected with the positive voltage is 2, the number of the blue sub-pixels connected with the negative voltage is also 2, and the positive polarity and the negative polarity of the blue sub-pixels are mutually offset. The polarities of the voltages connected with the same-color sub-pixels are mutually offset, so that the color cast is reduced, and the display image quality is improved. Meanwhile, the pixel arrays are arranged in the mode of the embodiment, in the same column, the head line and the tail line are both positive voltages, the middle line is alternately arranged with 2 positive voltages and 2 negative voltages, and the polarity of the driving voltage applied to the liquid crystal is periodically changed, so that the brightness of the displayed image is more uniform, and the display image quality is improved.
In one embodiment, one of the two adjacent pixel units receives a relatively high driving signal and the other pixel unit receives a relatively low driving signal, and as shown in fig. 7, a voltage distribution diagram corresponding to the driving frame of fig. 6 is shown, wherein each of the sub-pixels 215 and 225 in one column of the pixel array receives a relatively high driving signal, each of the sub-pixels 216 and 226 in the tenth pixel unit and the twelfth pixel unit receives a relatively low driving signal, and the adjacent columns are arranged in an opposite manner. In the present embodiment, in the first pixel cell group 210 and the second pixel cell group 220, as shown in table two, in the blue sub-pixels, 1 input higher positive voltage, 1 input higher negative voltage, that is, the polarity of the higher voltage in the blue sub-pixels is cancelled out, 1 input lower positive voltage, and 1 input lower negative voltage, that is, the polarity of the lower voltage in the blue sub-pixels is cancelled out; similarly, the polarities of the higher voltages in the green sub-pixels cancel each other out, and the polarities of the lower voltages cancel each other out; the polarities of the higher voltages in the red sub-pixel cancel each other out and the polarities of the lower voltages cancel each other out. The driving method of alternately driving high voltage and low voltage is adopted, the high voltage polarities in the pixels with the same color are mutually offset, the low voltage polarities are mutually offset, the brightness of a display picture can be more uniform, the color cast is reduced, and the display picture quality is improved.
In an embodiment, the driving manner using high and low voltages may be that the voltage of the driving signal received by one of the two sub-pixels in any two adjacent pixel units is relatively high, and the voltage of the driving signal received by the other sub-pixel is relatively low, as shown in fig. 8, another voltage distribution diagram corresponding to the driving frame of fig. 6 is shown, in the first pixel cell group 210 and the second pixel cell group 220, wherein, in the blue sub-pixel, 1 input higher positive voltage, 1 input higher negative voltage, that is, the polarities of the higher voltages in the blue sub-pixel cancel each other, 1 input lower positive voltage, and 1 input lower negative voltage, that is, the polarities of the lower voltages in the blue sub-pixel cancel each other; similarly, the polarities of the higher voltages in the green sub-pixels cancel each other out, and the polarities of the lower voltages cancel each other out; the polarities of the higher voltages in the red sub-pixel cancel each other out and the polarities of the lower voltages cancel each other out.
In an embodiment, the display panel further includes a source driving circuit, the source driving circuit is connected to the data lines to provide corresponding driving signals for the data lines, and the driving signals may be dc voltage signals, that is, the driving signals do not need to be polarity-inverted, so that power consumption of the source driving circuit is greatly reduced.
The present application also relates to a display panel, which includes a plurality of columns of data lines 100 and a pixel array 200, wherein the pixel array 200 includes a plurality of pixel units a. The polarities of the driving signals connected to any two adjacent data lines in the multiple rows of data lines 100 are opposite. The pixel unit a includes a plurality of sub-pixels, and each sub-pixel in the same pixel unit is in the same column, the pixel unit a may specifically include red, green and blue sub-pixels R, G and B in the same column and adjacently disposed, the sub-pixels in the same column include first and second pixel unit groups 210 and 220 alternately disposed, the first pixel unit group 210 includes a ninth pixel unit 215 and a tenth pixel unit 216, the second pixel unit group 220 includes an eleventh pixel unit 225 and a twelfth pixel unit 226, the ninth pixel unit 215 is respectively connected to a driving signal with positive-negative polarity, the tenth pixel unit 216 is connected to a driving signal with positive-negative-polarity, the eleventh pixel unit 225 is connected to the ninth pixel unit 215 with opposite polarity, and the twelfth pixel unit 226 is connected to the tenth pixel unit 216 with opposite polarity, the sub-pixels which are accessed with the positive driving signals in the sub-pixels in the same column are connected with the data line on one side, the sub-pixels which are accessed with the negative driving signals in the sub-pixels in the same column are connected with the data line on the other side, the voltage of the driving signals which are accessed by one pixel unit in any two adjacent pixel units is relatively high, and the voltage of the driving signals which are accessed by the other pixel unit is relatively low.
The display panel adopts a driving method of alternately driving high voltage and low voltage, the polarity of the driving voltage applied to the liquid crystal is periodically changed, the polarity of the high voltage in the pixels with the same color is mutually offset, the polarity of the low voltage is mutually offset, the brightness of a display picture can be more uniform, the color cast is reduced, and the display picture quality is improved. Meanwhile, the sub-pixel needing to be connected with the positive voltage is connected with the data line with the positive voltage signal input at one side and the sub-pixel needing to be connected with the negative voltage is connected with the data line with the negative voltage signal input at one side by changing the connection mode of the pixel array and the data line, so that the polarity inversion of the driving voltage applied to the liquid crystal layer is ensured, the polarity inversion of the driving signal input in the data line is not needed, and the driving power consumption is greatly reduced.
The application also relates to a display device which comprises the display panel, wherein the display panel comprises a plurality of rows of data lines and a pixel array, the polarity of the access driving signals of each data line is kept unchanged, and the polarity of the access driving signals of any two adjacent data lines is opposite; the pixel array includes a plurality of pixel units, each pixel unit includes a plurality of sub-pixels which are located in the same row and are adjacently disposed, a part of sub-pixels in the same row of sub-pixels are connected to the data line adjacent to one side, and another part of sub-pixels are connected to the data line adjacent to the other side.
According to the display device, in the driving process of the display panel, the driving signal does not need to be inverted, the driving voltage of the liquid crystal layer can be inverted, the stability of the liquid crystal layer can be maintained, and the power consumption of a product can be reduced.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display panel, comprising:
each data line is connected with a driving signal with fixed polarity, and the polarities of any two adjacent data lines connected with the driving signals are opposite;
the pixel array comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, the sub-pixels in the same pixel unit are in the same column, one part of the sub-pixels in the same column are connected with the adjacent data lines on one side, and the other part of the sub-pixels are connected with the adjacent data lines on the other side;
the pixel array comprises a first pixel unit group and a second pixel unit group which are positioned in the same column and are alternately arranged, the first pixel unit group and the second pixel unit group comprise the same number of pixel units, and the polarities of driving signals connected with the first pixel unit group and the second pixel unit group are opposite;
the first pixel cell group includes first to fourth pixel cells, the second pixel cell group includes fifth to eighth pixel cells, the polarities of the driving signals connected with the first pixel unit are respectively positive-negative, the polarities of the driving signals connected with the second pixel unit are respectively negative-positive, the polarities of the driving signals connected with the third pixel unit are respectively positive-positive, the polarities of the driving signals connected with the fourth pixel unit are respectively negative-negative, the polarity of the driving signals received by the fifth pixel unit and the first pixel unit is opposite, the polarity of the driving signals received by the sixth pixel unit and the second pixel unit is opposite, the seventh pixel unit and the third pixel unit are connected with driving signals with opposite polarities, and the eighth pixel unit and the fourth pixel unit are connected with driving signals with opposite polarities.
2. The display panel of claim 1, wherein the sub-pixels in the same scan line in the pixel array are of the same type, and the polarities of the driving signals received by the sub-pixels of the same color in the same column cancel each other.
3. The display panel of claim 1, wherein the driving signal is a direct current voltage signal.
4. The display panel of claim 1, wherein in the same column of sub-pixels, the polarity of the driving signal received by the sub-pixel in the first row and the polarity of the driving signal received by the sub-pixel in the last three rows are both positive voltages, and the polarity of the driving signal received by the sub-pixel in the middle row is alternately four positive voltages and four negative voltages.
5. The display panel according to claim 1 or 4, wherein one of the two adjacent pixel units is connected with a relatively high voltage of the driving signal, and the other pixel unit is connected with a relatively low voltage of the driving signal.
6. The display panel according to claim 1 or 4, wherein one of the two adjacent sub-pixels is connected to a relatively high voltage of the driving signal, and the other sub-pixel is connected to a relatively low voltage of the driving signal.
7. The display panel of claim 1, further comprising:
and the source electrode driving circuit is used for providing driving signals for the data lines.
8. A display panel, comprising:
each data line is connected with a driving signal with fixed polarity, and the polarities of the adjacent data lines connected with the driving signals are opposite;
the pixel array comprises a plurality of pixel units, each pixel unit comprises a plurality of sub-pixels, the sub-pixels in the same pixel unit are in the same column, the sub-pixels in the same column comprise a first pixel unit group and a second pixel unit group which are alternately arranged, the first pixel unit group comprises a ninth pixel unit and a tenth pixel unit, the second pixel unit group comprises an eleventh pixel unit and a twelfth pixel unit, the polarities of driving signals received by the ninth pixel unit are respectively positive-negative, the polarities of driving signals received by the tenth pixel unit are respectively positive-negative, the polarities of the driving signals received by the eleventh pixel unit and the ninth pixel unit are opposite, the polarities of the driving signals received by the twelfth pixel unit and the tenth pixel unit are opposite, and the sub-pixels of the sub-pixels in the same column, which are connected with the adjacent data lines with positive polarity, the sub-pixels connected with the negative polarity driving signals in the sub-pixels in the same column are connected with the adjacent data lines on the other side, the voltage of the driving signals connected with one pixel unit in any two adjacent pixel units is relatively high, and the voltage of the driving signals connected with the other pixel unit is relatively low.
9. The display panel of claim 8, wherein the driving signal is a direct current voltage signal.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| TWI251189B (en) * | 2004-03-18 | 2006-03-11 | Novatek Microelectronics Corp | Driving method of liquid crystal display panel |
| KR101359923B1 (en) * | 2007-02-28 | 2014-02-11 | 삼성디스플레이 주식회사 | Display device and method of drive for the same |
| KR102134320B1 (en) * | 2013-12-27 | 2020-07-15 | 엘지디스플레이 주식회사 | Liquid crystal display |
| WO2016171096A1 (en) * | 2015-04-24 | 2016-10-27 | シャープ株式会社 | Liquid crystal display device |
| CN105702226B (en) * | 2016-04-28 | 2018-07-17 | 京东方科技集团股份有限公司 | A kind of driving method of display panel, display panel and display device |
| CN106019747A (en) * | 2016-07-26 | 2016-10-12 | 京东方科技集团股份有限公司 | Array substrate and driving method thereof and display panel |
| CN106782404A (en) * | 2017-02-03 | 2017-05-31 | 深圳市华星光电技术有限公司 | Pixel driving framework and liquid crystal display panel |
| CN108109596B (en) * | 2017-12-18 | 2019-12-17 | 惠科股份有限公司 | Driving method and driving device of display panel |
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