CN113219745A - Display panel, display device, and driving method of display panel - Google Patents
Display panel, display device, and driving method of display panel Download PDFInfo
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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
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/136286—Wiring, e.g. gate line, drain line
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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
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0242—Compensation of deficiencies in the appearance of colours
Abstract
The application discloses a display panel, a display device and a driving method of the display panel, wherein a first active switch in the display panel is respectively connected with a scanning line and a data line; the second active switch is connected with a previous row of data lines adjacent to the first sub-pixels, the first active switch and the second active switch are charged through the data lines, the second active switch is charged through the previous row of data lines, and the charging capacity of the first active switch is larger than that of the second active switch, so that the charging voltage of the second sub-pixels is reduced compared with an original signal, the low-voltage sub-pixels are displayed, the voltage driving of bright and dark pixels is realized, and the defect of color cast of the visual angle of the liquid crystal display can be overcome.
Description
Technical Field
The present application relates to the field of liquid crystal display technologies, and in particular, to a display panel, a display device, and a driving method of the display panel.
Background
The statements herein merely provide background information related to the present application and may not necessarily constitute prior art.
Most of the existing large-sized liquid crystal display panels are negative-type Vertical Alignment (VA) liquid crystals or In-Plane Switching (IPS) liquid crystals, and comparing the VA liquid crystal technology with the IPS liquid crystal technology, it can be found that the VA liquid crystal technology has higher production efficiency and lower manufacturing cost, but the VA liquid crystal technology is inferior to the IPS liquid crystal technology In terms of the optical property, and has a more obvious optical property defect.
Therefore, the existing color shift solution will affect the panel transmittance, and the color shift phenomenon cannot be improved well.
Disclosure of Invention
The present application is directed to a display panel, a display device and a driving method of the display panel, and aims to effectively improve color shift without affecting panel transmittance.
To achieve the above object, the present application provides a display panel including: the display device comprises a first substrate, a second substrate and a display medium, wherein the first substrate and the second substrate are oppositely arranged, and the display medium is arranged between the first substrate and the second substrate; the first substrate includes:
the data lines and the scanning lines are arranged in a crossed manner;
the pixel units are arranged in an array, the data lines and the scanning lines are correspondingly arranged in each row of the pixel units, and each pixel unit comprises at least one first sub-pixel and at least one second sub-pixel which are adjacent;
the first sub-pixels and the second sub-pixels are respectively connected with the corresponding first active switches, the control ends of the first active switches are connected with the scanning lines corresponding to the first sub-pixels, and the data signal writing ends of the first active switches are respectively connected with the data lines corresponding to the first sub-pixels and the adjacent data lines in the next row; and
the second sub-pixels are connected with the corresponding second active switches, the control ends of the second active switches are connected with the next row of scanning lines adjacent to the first sub-pixels, the data signal writing ends of the second active switches are connected with the previous row of data lines adjacent to the first sub-pixels, and the charging capacity of the first active switches is larger than that of the second active switches.
Optionally, the at least one first sub-pixel and the at least one second sub-pixel are arranged in a cross.
Optionally, when the data signal of the data line is positive, the driving voltage of the data line is greater than a reference voltage, and when the data signal of the data line is negative, the driving voltage of the data line is less than or equal to the reference voltage, where the reference voltage is a common electrode reference voltage of the first active switch and the second active switch.
Optionally, adjacent data lines use drive signals of opposite polarity.
Optionally, when the first sub-pixel is driven with positive polarity, the second sub-pixel is driven with negative polarity.
Optionally, when the first sub-pixel is driven with negative polarity, the second sub-pixel is driven with positive polarity voltage.
Optionally, the first and second sub-pixels are arranged with opposite polarities.
Optionally, the first sub-pixel and the second sub-pixel are driven alternately by positive polarity driving and negative polarity driving, respectively.
Further, to achieve the above object, the present application also proposes a display device including the display panel as described above.
Further, to achieve the above object, the present application also proposes a driving method of a display panel, which is applied to the display device as described above, the display device including a first sub-pixel, a second sub-pixel, a data line, and a scanning line that scans line by line, the driving method of the display panel including:
when the first sub-pixel and the second sub-pixel receive the driving signal of the scanning line, the first sub-pixel and the second sub-pixel are charged through the data line; and
when the second sub-pixel receives the driving signal of the corresponding data line, the voltage of the second sub-pixel is reduced.
The display panel comprises a plurality of data lines and a plurality of scanning lines, wherein the data lines and the scanning lines are arranged in a crossed manner; the pixel units are arranged in an array, the data lines and the scanning lines are correspondingly arranged in each row of the pixel units, and each pixel unit comprises at least one first sub-pixel and at least one second sub-pixel which are adjacent; the first sub-pixels and the second sub-pixels are respectively connected with the corresponding first active switches, the control ends of the first active switches are connected with the scanning lines corresponding to the first sub-pixels, and the data signal writing ends of the first active switches are respectively connected with the data lines corresponding to the first sub-pixels and the adjacent data lines in the next row; and the second sub-pixels are connected with the corresponding second active switches, the control ends of the second active switches are connected with the next row of scanning lines adjacent to the first sub-pixels, the data signal writing ends of the second active switches are connected with the previous row of data lines adjacent to the first sub-pixels, the first sub-pixels and the second sub-pixels are charged through the data lines, and the second sub-pixels are driven through the previous row of data lines.
Drawings
FIG. 1 is a schematic circuit diagram of a pixel structure in an embodiment of a display panel according to the present application;
FIG. 2 is a schematic diagram of liquid crystal deflection of high electron pixels and low voltage sub-pixels of adjacent sub-pixels of an exemplary display panel of the present application;
FIG. 3 is a schematic diagram of a partial circuit structure of a pixel structure in another embodiment of a display panel according to the present application;
FIG. 4 is a schematic signal timing diagram of a display panel according to another embodiment of the present application;
FIG. 5 is a schematic circuit diagram of another embodiment of a display panel according to the present application;
FIG. 6 is a schematic structural diagram of an embodiment of a display device according to the present application;
fig. 7 is a flowchart illustrating a driving method of a display panel according to an embodiment of the present disclosure.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
70 | Second |
| 20 | |
100 | |
| 30 | |
200 | |
| 40 | |
210 | |
| 50 | |
220 | |
| 60 | First active switch |
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a display panel.
Referring to fig. 1, fig. 1 is a schematic circuit structure diagram of a pixel structure in an embodiment of a display panel, where the display panel includes a first substrate and a second substrate that are disposed opposite to each other, and a display medium between the first substrate and the second substrate; the first substrate includes: the display panel comprises a plurality of data lines 10 and a plurality of scanning lines 20, wherein the data lines 10 and the scanning lines 20 are arranged in a crossed manner; a plurality of pixel units 30 arranged in an array, wherein the data lines and the scanning lines are correspondingly arranged in each row of the pixel units 30, and each pixel unit 30 comprises at least one first sub-pixel 40 and at least one second sub-pixel 50 which are adjacent; a plurality of first active switches 60, wherein the first sub-pixels 40 and the second sub-pixels 50 are respectively connected to the corresponding first active switches 60, a control end of each first active switch 60 is connected to a corresponding scan line of the first sub-pixel 40, and a data signal writing end of each first active switch is respectively connected to a corresponding data line of the first sub-pixel 40 and an adjacent data line of a next column; and a plurality of second active switches 70, wherein the second sub-pixels 50 are connected to the corresponding second active switches 70, a control terminal of the second active switch 70 is connected to a next row of scan lines adjacent to the first sub-pixels 40, a data signal write terminal of the second active switch 70 is connected to a previous column of data lines adjacent to the first sub-pixels 40, the at least one first sub-pixel 40 and the at least one second sub-pixel 50 are arranged in a crossing manner, and a charging capability of the first active switch 60 is greater than a charging capability of the second active switch 70.
It should be noted that the first substrate may be an array substrate, the second substrate may be a color film substrate, the display medium may be a liquid crystal, and in the same row of pixel units 30, the first sub-pixels 40 and the second sub-pixels 50 are alternately arranged; in the same column of pixel units 30, the first sub-pixels 40 and the second sub-pixels 50 are alternately arranged; the two ends of the second sub-pixel 50 are respectively connected with the first active switch 60 and the second active switch 70, and the first sub-pixel 40 is connected with the first active switch 60; the first active switches 60 are correspondingly distributed in the first sub-pixels 40 and the second sub-pixels 50, and the second active switches 70 are correspondingly distributed in the second sub-pixels 50.
It should be noted that the pixel unit 30 includes a first sub-pixel 40 and a second sub-pixel 50, and the present embodiment drives the adjacent sub-pixels with bright and dark voltages, and the first sub-pixel and the second sub-pixel in the pixel unit are alternately disposed, so as to achieve the purpose of improving the color shift defect of the liquid crystal display, wherein the first sub-pixel represents a high voltage sub-pixel, the second sub-pixel represents a low voltage sub-pixel, and the first sub-pixel also represents a low voltage sub-pixel, and the second sub-pixel represents a high voltage sub-pixel, which is not limited in this embodiment, in the present embodiment, the first sub-pixel represents a high voltage sub-pixel, and the second sub-pixel represents a low voltage sub-pixel, wherein the first sub-pixel 40 and the second sub-pixel 50 are arranged with opposite polarities, and the first sub-pixel 40 and the second sub-pixel 50 are respectively driven with positive polarity and negative polarity alternately, the charging capability of the first active switch 60 is greater than that of the second active switch 70, and the first active switch 60 and the second active switch 70 may be thin film transistors, or may be other circuits capable of realizing the same or similar functions.
The display device comprises a data line 10 and a scanning line 20 which scans line by line, wherein the scanning line 20 comprises a first scanning line and a second scanning line, and the driving time of the first scanning line is earlier than that of the second scanning line.
In this embodiment, the first scan line is VGnThe second scan line is VGn+1。That is, the sequential scan driving signals are VGn, VGn +1 and VGn +2 … from top to bottom.
The adjacent data lines 10 adopt driving signals with opposite polarities, and the data lines 10 include adjacent first and second data lines, wherein the first and second data lines adopt driving signals with opposite polarities.
It is understood that the first data line is Vdn-m+1The second data line is Vdn-m+2I.e. Vd is turned on in sequencen-m、Vdn-m+1And Vdn-m+2… the sub-pixels are data written and the first and second sub-pixels are arranged with opposite polarities.
The first active switch 60 is respectively connected to the scan line 20 and the data line 10;
the second active switch 70 is connected to the data line with opposite polarity of the first active switch 60, so that the voltage difference between the first sub-pixel 40 and the second sub-pixel 50 can be generated, and the effect of alternating bright and dark can be achieved.
As shown in fig. 2, the liquid crystal deflection diagram of the adjacent sub-pixels of the display panel 100, i.e. the high-voltage sub-pixel and the low-voltage sub-pixel, divides each sub-pixel of RGB into sub-pixels, i.e. primary and secondary sub-pixels, so that the overall brightness of the large viewing angle is closer to the front view with the voltage variation, wherein θAIndicating the liquid crystal deflection angle, theta, in the high electric regionBThe liquid crystal deflection angle in the high electric region is expressed, so that the change relation of the visual angle brightness along with the signal is close to the change of the front-view original signal brightness along with the signal under the condition of not sacrificing the transmittance, and the visual angle is improved.
However, in this embodiment, when the data signal of the data line 10 is positive, the driving voltage of the data line 10 is greater than the reference voltage, and when the data signal of the data line 10 is negative, the driving voltage of the data line 10 is less than the reference voltage, wherein the reference voltage is the reference voltage of the first active switch 60 and the second active switch 70, since the first active switch 60 is represented by T1 and the second active switch 70 is represented by T2 for the TFT device, the T2 is charged by the secondary data driving line, since the first active switch 60 and the second active switch 70 are charged by the data line and the second active switch 70 is also driven by the data line of opposite polarity, since the charging capability of the first active switch 60 is greater than that of the second active switch 70, the charging voltage of the second sub-pixel 50 is reduced compared with the original signal, the display of the low-voltage sub-pixel units is achieved, and the high-voltage and low-voltage alternation of the adjacent sub-pixel units is realized, so that the aim of reducing color cast is fulfilled.
As shown in fig. 3, a schematic diagram of a partial circuit structure of a pixel structure in another embodiment of a display panel specifically includes: the control terminal of the first active switch 60 is connected to the scan line 20, and the data signal write terminal of the first active switch 60 is connected to the data line 10;
the control terminal of the second active switch 70 is connected to the scan line 20, and the data signal write terminal of the second active switch 70 is connected to the data line of the opposite polarity of the first active switch 60.
In the embodiment, only one TFT element T1 is used for charging the sub-pixel in the design of the bright sub-pixel with higher voltage, and the TFT element T2 has smaller charging capability than that of T1 in the design of the dark sub-pixel with darker voltage.
In the technical solution provided in this embodiment, the display panel includes a first substrate and a second substrate that are disposed opposite to each other, and a display medium between the first substrate and the second substrate; the first substrate includes: the display panel comprises a plurality of data lines 10 and a plurality of scanning lines 20, wherein the data lines 10 and the scanning lines 20 are arranged in a crossed manner; a plurality of pixel units 30 arranged in an array, wherein the data lines and the scanning lines are correspondingly arranged in each row of the pixel units 30, and each pixel unit 30 comprises at least one first sub-pixel 40 and at least one second sub-pixel 50 which are adjacent; a plurality of first active switches 60, wherein the first sub-pixels 40 and the second sub-pixels 50 are respectively connected to the corresponding first active switches 60, a control end of each first active switch 60 is connected to a corresponding scan line of the first sub-pixel 40, and a data signal writing end of each first active switch is respectively connected to a corresponding data line of the first sub-pixel 40 and an adjacent data line of a next column; and a plurality of second active switches 70, the second sub-pixels 50 are connected to the corresponding second active switches 70, the control terminal of the second active switch 70 is connected to the next scanning line adjacent to the first sub-pixel 40, the data signal write terminal of the second active switch 70 is connected to the previous column data line adjacent to the first sub-pixel 40, the at least one first sub-pixel 40 and the at least one second sub-pixel 50 are arranged in an intersection, the first sub-pixel 40 and the second sub-pixel 50 are charged by a data line, the second sub-pixel is also driven by a previous column of data lines, because the charging capability of the first active switch 60 is greater than that of the second active switch 70, the charging voltage of the second sub-pixel 50 is reduced compared with the original signal, so that the low-voltage sub-pixel is presented, the voltage driving of the bright and dark pixels is realized, and the defect of the color cast of the viewing angle of the liquid crystal display can be improved.
Referring to fig. 4, fig. 4 is a signal timing diagram of still another embodiment of the display panel, in which the first active switch 60 is represented by T1, the second active switch 70 is represented by T2, and T2 has a smaller charging capability than T1.
It should be noted that the display panel adopts a driving method of an inverted flip-pixel design, a driving method of an inverted tri-gate pixel design, and other driving methods, which is not limited in this embodiment, and fig. 5 is a schematic circuit structure diagram of another embodiment of the display panel, in which the sequential scanning driving signals are VG from top to bottomn、VGn+1And VGn+2…, in turn, data driving signalsNumber from left to right is Vdm、Vdm+1And Vdm+2…, in this embodiment, a driving method in which the display panel is designed to have inverted flip-pixel pixels will be described as an example.
In the specific implementation, the voltage interval of bright and dark pixels is realized by adopting a driving mode of flip-pixel design, and the adjacent sub-pixels are driven by the bright and dark voltages, so that the defect of color cast of the visual angle of the liquid crystal display can be improved. The higher voltage bright sub-pixel design has only one TFT element T1 for charging the sub-pixel, the darker voltage dark sub-pixel design has one TFT element T1 for charging the sub-pixel, and another TFT element T2 is driven by the next-stage scan driving line, the TFT element T2 has smaller charging capacity than T1, the TFT element T2 is charged by an adjacent data driving line, and the adjacent data driving line drives driving signals of different polarities. The first sub-pixel 40 and the second sub-pixel 50 are charged through the data line, the second sub-pixel is driven through the previous row of data line, and the charging capacity of the first active switch 60 is greater than the charging capacity of the second active switch 70, so that the charging voltage of the second sub-pixel 50 is reduced compared with the original signal, the low-voltage sub-pixel is presented, the voltage driving of the bright and dark pixels is realized, and the defect of the color cast of the viewing angle of the liquid crystal display can be improved.
Continuing with FIGS. 1 and 4, the subpixel primary charge driving TFT element T1 is of a Flip-pixel design, and the data line 10 is as shown in FIG. 1VdmThe data driving line VG is from top to bottom according to the scan driving signaln、VGn+1、VGn+2… sequentially turn on the driving scan sub-pixel Vdn-m、Vdn+1-m、Vdn+2-m… data write, VdmIs sequentially written into the sub-pixels Vdn-m-1、Vdn-m、Vdn-m+1… homopolar drive voltage, VdmThe data driving signal of (D) is positive polarity, and Vd is the same as the positive polaritym+1Is sequentially written into the sub-pixels Vdn-m+1、Vdn+1-m+1、Vdn+2-m+1… homopolar drive voltage, Vdm+1The data driving signal of (2) is negative in polarity as an example. Is composed ofThe effect of improving the viewing angle is achieved by presenting the high and low voltage intervals, as shown in fig. 1, design Vdn-m、Vdn+1-m、Vdn+2-m… is a high voltage sub-pixel, Vdn-m+1、Vdn+1-m+1、Vdn+2-m+1… are low voltage sub-pixels. To realize Vdn-m+1、Vdn+1-m+1、Vdn+2-m+1… is a low voltage sub-pixel, another TFT element T2 is designed to be driven by the next scanning driving line, the adjacent data driving line Vdm, from top to bottom VGn, VGn +1, VGn +2 … according to the scanning driving signal, sequentially turn on the TFT element T2 to perform data writing to the sub-pixel Vdn-m + 1, Vdn +1-m + 1, Vdn +2-m + 1 …. The adjacent data driving line Vdm charges the TFT element T2, and the adjacent data driving line Vdm drives a driving signal having a different polarity from the original data driving line Vdm + 1. Therefore, the sub-pixels Vdn-m + 1, Vdn +1-m + 1 and Vdn +2-m + 1 … are charged with the negative voltage of the data driving line Vdm + 1 through the TFT element T1, and then the Vdm positive voltage is charged through the TFT element T2, so that the TFT element T2 has smaller charging capacity than the TFT element T1, and the final charging voltage of the sub-pixels Vdn-m + 1, Vdn +1-m + 1 and Vdn +2-m + 1 … is reduced compared with the original signal, thereby achieving the pixel presentation of the low-voltage sub-pixels, realizing the voltage driving of the bright and dark pixels, and realizing the defect of improving the color cast of the liquid crystal display.
After the inversion period, the polarity of the data driving signal is switched to the original VdmPositive polarity driving of data drive lines, Vdm+1Data drive line negative polarity driving, converted into VdmNegative polarity driving of data drive lines, Vdm+1The data driving lines are driven with positive polarity.
Continuing as shown in FIG. 4, the high voltage sub-pixel Vpn-mAnd a low voltage sub-pixel Vpn-m+1Voltage drive description. High voltage sub-pixel Vpn-mThe final sub-pixel charging voltage is x. Low voltage sub-pixel Vpn-m+1The charging voltage of the first period of time of (1) is x, the final sub-pixel charging voltage of the second period of time is x 'through the next-stage TFT element T2 and the adjacent reverse polarity data driving line'<x, thereby driving the adjacent sub-pixels with bright and dark voltages to achieve the purpose of improving the color cast of the viewing angle of the liquid crystal display.
In one embodiment, when the data signal of the data line 10 is positive, the driving voltage of the data line 10 is greater than the reference voltage, and when the data signal of the data line 10 is negative, the driving voltage of the data line 10 is less than the reference voltage, where the reference voltage is the common electrode reference voltage of the first active switch 60 and the second active switch 70.
In this embodiment, the first scan line is VGnFor example, the second scan line is VGn+1The reference voltage is Vcom, and the first data line is Vdn-mAnd the second data line is Vdn-m+1That is, the positive driving voltages of the data driving signals are all greater than the reference voltage, since the adjacent data driving lines with opposite polarities are charged to the second active switch T2 of the TFT device, since the charging capability of the first active switch 60 is greater than the charging capability of the second active switch 70, the charging voltage of the second sub-pixel 50 can be reduced compared with the original signal, and the adjacent sub-pixel units can realize alternation of high and low voltages, thereby achieving the purpose of reducing color shift.
In one embodiment, when the first sub-pixel 40 is driven with positive polarity, the second sub-pixel 50 is driven with negative polarity.
In this embodiment, it is ensured that, during the positive polarity driving, the first sub-pixel realizes the high voltage, the second sub-pixel realizes the low voltage, and the high-low voltage alternation of the adjacent sub-pixels is realized, thereby achieving the purpose of improving the color cast.
In one embodiment, when the first sub-pixel 40 is driven with negative polarity, the second sub-pixel 50 is driven with negative polarity.
In this embodiment, it is ensured that the second sub-pixel realizes a low voltage and the first sub-pixel realizes a high voltage when the second sub-pixel is driven with a negative polarity, and the alternation of the high voltage and the low voltage of the adjacent sub-pixels is realized, so as to achieve the purpose of improving color cast.
In order to achieve the above object, the present invention further provides a display device, as shown in fig. 6, which is a schematic structural diagram of an embodiment of the display device, where the display device includes the display panel and the driving module 200, the driving module 200 may include a scanning circuit 210 and a driving circuit 220, the scanning circuit 210 is configured to output a scanning signal, and generally scans the pixel units row by row, and the driving circuit 220 outputs a driving signal, so that the pixel units receive driving data when being scanned, and display the driving data.
The driving module 200 can refer to the above embodiments, and through this process, the sub-pixels in the pixel unit can be driven by different driving methods in accordance with the high and low voltages, so as to solve the color shift of the viewing angle.
The specific structure of the display panel refers to the above embodiments, and since the device adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
In order to achieve the above object, the present invention further provides a driving method of a display panel, as shown in fig. 7, which is a schematic flow chart of an embodiment of the driving method of the display panel, and the driving method of the display panel is applied to the display device as described above, where the display device includes a first sub-pixel, a second sub-pixel, a data line, and a scan line scanned line by line, and the driving method of the display panel includes:
step S10, when the first sub-pixel and the second sub-pixel receive the driving signal of the scan line, the first sub-pixel and the second sub-pixel are charged through the data line; and
in step S20, when the second sub-pixel receives the driving signal of the corresponding data line, the voltage of the second sub-pixel decreases.
According to the technical scheme provided by the embodiment, when the first sub-pixel and the second sub-pixel receive the driving signal of the scanning line, the data line is used for charging, and when the second sub-pixel receives the driving signal of the data line with opposite polarity, the voltage of the second sub-pixel is reduced because the charging capacity of the first active switch is greater than that of the second active switch, so that the charging capacities of the driving transistors connected with the adjacent sub-pixels are different, and the adjacent sub-pixels realize high-low voltage alternation, thereby achieving the purpose of reducing color cast.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural transformations, or direct/indirect applications in other related technical fields, which are within the spirit of the present invention, are included in the present invention.
Claims (10)
1. A display panel, comprising: the display device comprises a first substrate, a second substrate and a display medium, wherein the first substrate and the second substrate are oppositely arranged, and the display medium is arranged between the first substrate and the second substrate; the first substrate includes:
the data lines and the scanning lines are arranged in a crossed manner;
the pixel units are arranged in an array, the data lines and the scanning lines are correspondingly arranged in each row of the pixel units, and each pixel unit comprises at least one first sub-pixel and at least one second sub-pixel which are adjacent;
the first sub-pixels and the second sub-pixels are respectively connected with the corresponding first active switches, the control ends of the first active switches are connected with the scanning lines corresponding to the first sub-pixels, and the data signal writing ends of the first active switches are respectively connected with the data lines corresponding to the first sub-pixels and the adjacent data lines in the next row; and
the second sub-pixels are connected with the corresponding second active switches, the control ends of the second active switches are connected with the next row of scanning lines adjacent to the first sub-pixels, the data signal writing ends of the second active switches are connected with the previous row of data lines adjacent to the first sub-pixels, and the charging capacity of the first active switches is larger than that of the second active switches.
2. The display panel of claim 1, wherein the at least one first sub-pixel and the at least one second sub-pixel are arranged in an intersection.
3. The display panel of claim 1, wherein the driving voltage of the data line is greater than a reference voltage when the data signal of the data line is positive, and the driving voltage of the data line is less than or equal to the reference voltage when the data signal of the data line is negative, wherein the reference voltage is a common electrode reference voltage of the first active switch and the second active switch.
4. A display panel as claimed in any one of claims 1 to 3 wherein adjacent data lines employ drive signals of opposite polarity.
5. The display panel according to any one of claims 1 to 3, wherein when the first subpixel is driven with a positive polarity, the second subpixel is driven with a negative polarity.
6. The display panel according to any one of claims 1 to 3, wherein when the first subpixel is driven with a negative polarity, the second subpixel is driven with a positive polarity.
7. A display panel as claimed in any one of claims 1 to 3 wherein the first and second sub-pixels are arranged with opposite polarities.
8. The display panel according to any one of claims 1 to 3, wherein the first sub-pixel and the second sub-pixel are driven alternately with positive polarity driving and negative polarity driving, respectively.
9. A display device characterized in that it comprises a display panel according to any one of claims 1-8.
10. A driving method of a display panel applied to the display device according to claim 9, the display device including a first sub-pixel, a second sub-pixel, a data line, and a scan line which is scanned line by line, the driving method of the display panel comprising:
when the first sub-pixel and the second sub-pixel receive the driving signal of the scanning line, the first sub-pixel and the second sub-pixel are charged through the data line; and
when the second sub-pixel receives the driving signal of the corresponding data line, the voltage of the second sub-pixel is reduced.
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