CN110955087A - Pixel structure, pixel unit and display panel - Google Patents

Pixel structure, pixel unit and display panel Download PDF

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CN110955087A
CN110955087A CN201811125643.3A CN201811125643A CN110955087A CN 110955087 A CN110955087 A CN 110955087A CN 201811125643 A CN201811125643 A CN 201811125643A CN 110955087 A CN110955087 A CN 110955087A
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pixel structure
sub
electrode
pixel
branch
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CN110955087B (en
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李卓
吴永良
康海燕
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Xianyang Caihong Optoelectronics Technology Co Ltd
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Xianyang Caihong Optoelectronics Technology Co Ltd
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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
    • 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
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses a pixel structure, which comprises a main electrode; and a plurality of branch electrodes connected with the main electrode; the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the main electrode is a first angle, and the acute included angle of the second sub-branch electrode and the main electrode is a second angle. According to the invention, the acute included angle between the branch electrode and the trunk electrode is designed to be the first angle and the second angle, so that the whitening phenomenon in side view is solved.

Description

Pixel structure, pixel unit and display panel
Technical Field
The invention belongs to the field of display, and particularly relates to a pixel structure, a pixel unit and a display panel.
Background
As the display specification of the lcd is continuously developing towards large size, the market demands the lcd performance to pay more and more attention to the characteristics of high contrast, fast response, wide viewing angle, etc. In order to overcome the viewing angle problem of large-sized liquid crystal display panels, the wide viewing angle technology of liquid crystal display panels must be continuously improved and broken through. Polymer Stabilized vertical alignment liquid crystal (PSVA, Polmer Stabilized vertical Aligned) is one of the wide viewing angle technologies currently widely used in liquid crystal display panels.
Currently, the PSVA type liquid crystal panel generally adopts a 4Domain (4 Domain) design, and in order to maximize the transmittance of the PSVA type liquid crystal panel, the liquid crystal direction of each Domain forms a 45-degree angle with the absorption axis of the polarizer, so that the angle between the direction of the ITO (indium tin oxide) electrode and the horizontal direction needs to be set to be 45 degrees.
However, since the optical path difference of the liquid crystal is larger in the side view direction than in the front view direction, a white phenomenon occurs in the side view.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a pixel structure, a pixel unit and a display panel. The technical problem to be solved by the invention is realized by the following technical scheme:
an embodiment of the present invention provides a pixel structure, including:
a trunk electrode; and
the branch electrodes are connected with the main electrode;
the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the main electrode is a first angle, and the acute included angle of the second sub-branch electrode and the main electrode is a second angle.
In a specific embodiment, the first angle is equal to 45 degrees.
In one embodiment, the second angle is greater than or equal to 40 degrees and less than 45 degrees.
In a specific embodiment, the main electrode is a cross-shaped electrode, the main electrode divides the pixel structure into four partitions, and two adjacent branch electrodes in any one partition are parallel to each other.
In a specific embodiment, a plurality of first sub-branch electrodes are arranged in any two of the partitions, and a plurality of second sub-branch electrodes are arranged in the other two of the partitions.
In one embodiment, the branch electrodes in two adjacent partitions are not parallel to each other.
The invention also provides a pixel unit, comprising:
data lines, scanning lines;
a switching member electrically connecting the data line and the scan line;
the pixel structure is electrically connected with the switch piece;
wherein the pixel structure comprises: the device comprises a main electrode and a plurality of branch electrodes connected with the main electrode; the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the acute included angle of the main electrode are a first angle, and the acute included angle of the second sub-branch electrode and the acute included angle of the main electrode are a second angle.
In one embodiment, two adjacent rows of the pixel structures are mirror symmetric.
In a specific embodiment, the polarities of the pixel structures in two adjacent columns are opposite, and in one frame, the voltage is applied to the pixel structures in the first driving mode or the second driving mode.
In a specific embodiment, the first driving manner includes a first sub-driving manner and a second sub-driving manner, and the voltages are alternately applied to the pixel structure in the first sub-driving manner or the second sub-driving manner at a first predetermined interval along the scanning line direction in one frame.
In a specific embodiment, the second driving manner includes a third sub-driving manner and a fourth sub-driving manner, and the voltages are alternately applied to the pixel structure in the third sub-driving manner or the fourth sub-driving manner at a second predetermined interval along the scanning line direction in one frame.
The invention also provides a display panel, comprising:
a first substrate;
a second substrate located opposite to the first substrate;
the pixel unit according to any one of the above embodiments, disposed between the first substrate and the second substrate;
a liquid crystal material between the first substrate and the second substrate.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the acute included angle between the branch electrode and the trunk electrode in the ITO electrode is designed to be the first angle and the second angle, so that the whitening phenomenon in side view is solved.
Drawings
Fig. 1 is a schematic diagram of a pixel structure according to an embodiment of the invention;
fig. 2 is a schematic view of another pixel structure according to an embodiment of the present invention;
fig. 3 is a schematic view of another pixel structure according to an embodiment of the invention;
fig. 4 is a schematic diagram of a pixel unit according to an embodiment of the invention;
FIG. 5 is a schematic diagram of another pixel unit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another pixel unit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of another pixel unit according to an embodiment of the present invention;
fig. 8 is a schematic view of a display panel according to an embodiment of the invention;
fig. 9 is a schematic view of a display panel 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.
It should be noted that the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Example one
Referring to fig. 1, fig. 1 is a schematic view of a pixel structure according to an embodiment of the invention. The pixel structure of the embodiment includes:
a trunk electrode 101; and
a plurality of branch electrodes 102 connected to the main electrode 101;
the branch electrode includes a first sub-branch electrode 1021 and a second sub-branch electrode 1022, an acute included angle between the first sub-branch electrode 1021 and the main electrode is a first angle, and an acute included angle between the second sub-branch electrode 1022 and the main electrode is a second angle.
In a specific embodiment, the first angle is equal to 45 degrees, and the second angle is greater than or equal to 40 degrees and less than 45 degrees.
Preferably, the second angle is 42 degrees.
When the acute angle between the first sub-branch electrode and the main electrode in a pixel structure is 45 degrees, and the acute angle between the second sub-branch electrode 1022 and the main electrode is 42 degrees, the effect of removing the whitening phenomenon is the best in side view.
In this embodiment, the main electrode 101 is a strip, the branch electrodes 102 are disposed on two sides of the main electrode 101, each branch electrode 102 is also a strip and is connected to the main electrode 101, a slit is formed between every two adjacent branch electrodes 102 and extends to an edge of the pixel structure, and the slit is generally called an alignment slit.
According to the invention, the acute included angle between the branch electrode and the main electrode in the ITO electrode is designed into the first angle and the second angle, so that the whitening phenomenon in side view is solved, the whitening phenomenon is removed, and meanwhile, the pixel structure is ensured to have higher transmittance, so that the display is more uniform, and the display effect is improved.
In a specific embodiment, the main electrode is a cross-shaped electrode, the main electrode divides the pixel structure into four partitions, and two adjacent branch electrodes in any one partition are parallel to each other, wherein:
any two of the subareas are provided with a plurality of first sub-branch electrodes, and the other two subareas are provided with a plurality of second sub-branch electrodes.
In one embodiment, the included angle between the first sub-branch electrode and the horizontal direction of the cross-shaped electrode is a first angle, and the included angle between the second sub-branch electrode and the horizontal direction of the cross-shaped electrode is a second angle.
In one embodiment, referring to fig. 1, the main electrode is a cross-shaped electrode, the cross-shaped electrode divides the pixel structure into four partitions, namely a1, a2, A3 and a4, wherein the a1 partition is adjacent to the a2 partition and the A3 partition, and the branch electrodes in each partition are connected to the main electrode 101, so that the electrodes are interconnected. For one of the four subareas, the inclination directions of all the branch electrodes in each subarea are the same, that is, two adjacent branch electrodes in any one subarea are parallel to each other.
Taking the a1 division as an example, the relative position of the a1 division is located at the upper left of the pixel structure, and the inclination direction of the branch electrode in the division is also inclined towards the upper left.
Preferably, the branch electrodes in two adjacent partitions are not parallel to each other.
That is, taking the a2 division as an example, the relative position of the a2 division is located at the upper right of the pixel structure, and the inclination direction of the branch electrode in the division is also inclined toward the upper right; taking the A3 partition as an example, the relative position of the A3 partition is located at the lower left of the pixel structure, and the inclination direction of the branch electrode in the partition is also inclined towards the lower left, taking the a4 partition as an example, the relative position of the a4 partition is located at the lower right of the pixel structure, and the inclination direction of the branch electrode in the partition is also inclined towards the lower right; that is, the orientation of any one of the branch electrodes in the a1 division and any one of the branch electrodes in the a2 division are different, that is, the branch electrode in the a1 division is not parallel to the branch electrode in the a2 division, and likewise, the branch electrode in the a1 division is not parallel to the branch electrode in the A3 division. The arrangement of the electrodes in the above direction can improve the problem of color shift of display after voltage application.
Furthermore, the branch electrodes in two adjacent partitions in the first direction are both first sub-branch electrodes, and the branch electrodes in two adjacent partitions in the second direction are both second sub-branch electrodes.
Preferably, the first direction and the second direction are both horizontal directions.
For example, referring to fig. 1, the a1 partition and the a2 partition are both in the first direction, the branch electrodes in the a1 partition and the a2 partition are both first sub-branch electrodes, the A3 partition and the a4 partition are both in the second direction, and the branch electrodes in the A3 partition and the a4 partition are both second sub-branch electrodes.
Preferably, the first direction and the second direction are both vertical directions.
For example, referring to fig. 2, the a1 partition and the A3 partition are both in the first direction, the branch electrodes in the a1 partition and the A3 partition are both first sub-branch electrodes, the a2 partition and the a4 partition are both in the second direction, and the branch electrodes in the a2 partition and the a4 partition are both second sub-branch electrodes.
Furthermore, the branch electrodes in the two partitions on the first diagonal are both first sub-branch electrodes, and the branch electrodes in the two partitions on the second diagonal are both second sub-branch electrodes.
For example, referring to fig. 3, the a1 partition and the a4 partition are on a first diagonal, the a2 partition and the A3 partition are on a second diagonal, wherein the branch electrodes in the a1 partition and the a4 partition are both first sub-branch electrodes, and the branch electrodes in the a2 partition and the A3 partition are both second sub-branch electrodes.
According to the invention, acute included angles between the branch electrodes and the main electrode in different partitions in a single pixel structure are designed into a first angle and a second angle, so that the orientation directions of liquid crystals in partial partitions are changed, the whitening phenomenon of the PSVA type liquid crystal panel during observation at different viewing angles is solved, higher transmittance can be maintained, the display is uniform, and the display effect is improved.
Example two
Referring to fig. 4, fig. 4 is a schematic view of a pixel unit according to an embodiment of the invention. The embodiment of the present invention further provides a pixel unit based on the above embodiment, where the pixel unit includes:
data lines 201, scan lines 202;
a switching member 203 electrically connecting the data line 201 and the scan line 202;
and the pixel structure 10 is electrically connected with the switch member 203.
Wherein, the pixel structure includes:
a trunk electrode 101; and
a plurality of branch electrodes 102 connected to the main electrode 101;
the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the main electrode is a first angle, and the acute included angle of the second sub-branch electrode and the main electrode is a second angle.
In this embodiment, please refer to fig. 4, the data line 201 is perpendicular to the scan line 202, and it should be noted that, in this embodiment, the data line 201 and the scan line 202 carry one pixel structure 10 as an example, in an actual display panel, one scan line 202 and one data line 201 correspond to a plurality of pixel structures connected thereto, the data line 201 is used for loading a data driving signal to the pixel structure 10, and the data driving signal controls the pixel structures to display different gray-scale colors according to the magnitude of the driving voltage; the scan lines 202 are used to load scan driving signals to the pixel structure, and the scan driving signals control whether data driving signals are loaded to the pixel structure 10. In one embodiment, the data lines 201 and the scan lines 202 are generally made of a conductive material, and may be a metal element, an alloy, a metal oxide, a metal nitride, a metal oxynitride, or a combination of two or more of the foregoing materials.
For better explanation, the present embodiment will be described by taking the switching device 203 as a TFT (Thin Film Transistor), but the switching device 203 is not limited to this device as long as the function can be achieved. Specifically, the TFT includes a source electrode, a drain electrode, and a gate electrode, wherein the source electrode is connected to the data line 201, the gate electrode is connected to the scan line 202, and the drain electrode is connected to the pixel structure 10. When the pixel structure is in operation, the scanning driving circuit generates a scanning driving signal, the scanning driving signal is transmitted to the grid electrode of the TFT through the scanning line, so that the grid electrode is controlled to be conducted, at the moment, the data driving signal generated by the data driving circuit is transmitted to the source electrode of the TFT through the scanning line, at the moment, the data driving signal of the source electrode is input into the pixel structure 10 due to the conduction of the grid electrode of the TFT, and one-time driving is completed.
In one embodiment, a pixel unit comprises an X row and Y column pixel structure (0)<M≤X，0<N is less than or equal to Y), and the adjacent two rows of pixel structures are in mirror symmetry, so that the white-out phenomenon can be further removed, and the display effect is improved. For convenience of description, each pixel structure is labeled by taking the pixel structure of the Nth row and the Mth column as AN,MFor example, the first row and the first column of pixels have a structure of A1,1
In one embodiment, referring to fig. 5, in the same row of pixel structures, the pixel structure of the M-th row and the N-th column is denoted as aM,NThe structure of the M row and the N +1 column is marked as AM,N+1I.e. AM,NAnd AM,N+1For two adjacent columns of pixel structures, AM,NThe pixel structure obtained by rotating the pixel structure 180 degrees along the transverse axis of the main electrode 101 is the pixel structure AM,N+1The purpose of this arrangement is to optimize the effect of removing the whitening phenomenon, thereby further improving the display effect.
In one embodiment, the polarities of two adjacent rows of pixel structures are opposite, i.e., in a polarity row inversion manner, for example, when the polarity of the ith row of pixel structures is + - + - + -, the polarity of the corresponding ith +1 row of pixel structures is- + - + - + -.
In a specific embodiment, a voltage is applied to the pixel structure in a first driving manner or a second driving manner.
Further, the first driving mode comprises a first sub-driving mode and a second sub-driving mode, and voltages are alternately applied to the pixel structure in the first sub-driving mode or the second sub-driving mode along the scanning line direction at a first preset interval.
In one embodiment, the data line D1 is connected to the pixel structure AM,1And the corresponding voltage is the first driving voltage, the data line D2 is connected to the pixel structure AM,2And the corresponding voltage is the second driving voltage, and the data line DN is connected with the pixel structure AM,NAnd from the pixel structure AM,2To the pixel structure AM,Y-1Alternatively loading the first driving voltage or the second driving voltage at intervals of a first set intervalTo the corresponding pixel structure, and data line DY connecting with pixel structure AM,YAnd the corresponding voltage is the first driving voltage, which is the first sub-driving mode, and the data line D1 is connected to the pixel structure aM+1,1And the corresponding voltage is the second driving voltage, the data line D2 is connected to the pixel structure AM+1,2And the corresponding voltage is the first driving voltage, and the slave pixel structure AM+1,2To the pixel structure AM+1,Y-1Alternately loading the first driving voltage or the second driving voltage to the corresponding pixel structure at intervals of a first set interval, wherein the data line DY is connected with the pixel structure AM+1,YAnd the corresponding voltage is the second driving voltage, which is the second sub-driving mode. For example, the data line D1 is connected to the pixel structure A1,1And the corresponding voltage is the first driving voltage, the data line D2 is connected to the pixel structure A1,2And the corresponding voltage is the second driving voltage, and the data line DN is connected with the pixel structure A1,NAnd from the pixel structure A1,2To the pixel structure A1,Y-1Alternately loading the first driving voltage or the second driving voltage to the corresponding pixel structure at intervals of a first set interval, wherein the data line DY is connected with the pixel structure A1,YAnd the corresponding voltage is the first driving voltage, which is the first sub-driving mode, and when the first sub-driving mode applies voltage to the pixel structure corresponding to the scanning line G1, the second sub-driving mode applies voltage to the pixel structure corresponding to the scanning line G2; the data line D1 is connected with the pixel structure A2,1And the corresponding voltage is the second driving voltage, the data line D2 is connected to the pixel structure A2,2And the corresponding voltage is the first driving voltage, and the slave pixel structure A2,2To the pixel structure A2,Y-1Alternately loading the first driving voltage or the second driving voltage to the corresponding pixel structure at intervals of a first set interval, wherein the data line DY is connected with the pixel structure A2,YAnd the corresponding voltage is the first driving voltage, and this mode is the second sub-driving mode. And by analogy, along the scanning line direction, correspondingly loading a voltage to the pixel structure alternately in a first sub-driving mode or a second sub-driving mode. In the bookIn the embodiment, the first predetermined interval is every other pixel structure in the scanning line direction, namely, the adjacent scanning lines are alternately loaded with the first sub-driving mode and the second sub-driving mode.
In this embodiment, the first predetermined interval and the first setting interval are set according to actual needs, and this embodiment is not particularly limited.
In this embodiment, the first sub-driving manner and the fifth sub-driving manner are satisfied by applying a voltage to the pixel structure in an alternating manner.
For example, referring to fig. 6, an 8 × 12 pixel structure is taken as an example, that is, the pixel structure includes 8 rows and 12 columns, and the first setting interval is every two pixel structures.
The data line D1 is connected with the pixel structure A1,1And the pixel structure A1,1The corresponding voltage is the first driving voltage, and the data line D2 and the data line D3 are respectively connected to the pixel structure A1,2And a pixel structure A1,3And the pixel structure A1,2And a pixel structure A1,3The corresponding voltages are the second driving voltages, and the data line D4 and the data line D5 are respectively connected to the pixel structure A1,4And a pixel structure A1,5And the pixel structure A1,4And a pixel structure A1,5Corresponding voltages are the first driving voltage, and so on, the data line D10 and the data line D11 are respectively connected to the pixel structure a1,10And a pixel structure A1,11And the pixel structure A1,10And a pixel structure A1,11The corresponding voltages are the second driving voltages, and the data line D12 is connected with the pixel structure A1,12And the pixel structure A1,12The corresponding voltage is a first driving voltage; meanwhile, the data line D1 is connected with the pixel structure A2,1And the pixel structure A2,1The corresponding voltage is the second driving voltage, and the data line D2 and the data line D3 are respectively connected to the pixel structure A2,2And a pixel structure A2,3And the pixel structure A2,2And a pixel structure A2,3The corresponding voltages are the first driving voltages, and the data line D4 and the data line D5 are respectively connected to the pixel structure A2,4And a pixel structure A2,5And the pixel structure A2,4And a pixel structure A2,5The corresponding voltages are all second driving voltagesBy analogy, the data line D10 and the data line D11 are respectively connected to the pixel structure a2,10And a pixel structure A2,11And the pixel structure A2,10And a pixel structure A2,11The corresponding voltages are the first driving voltages, and the data line D12 is connected with the pixel structure A2,12And the pixel structure A2,12And the corresponding voltage is a second driving voltage, and by analogy, the voltage is loaded to the pixel structure alternately in a first sub-driving mode or a second sub-driving mode along the scanning line direction.
In the embodiment, the voltage is alternately applied to the pixel structure in the first sub-driving mode or the second sub-driving mode at the first predetermined interval along the scanning line direction, and the pixel unit utilizes the polarity column inversion mode, so that the white emission phenomenon can be further improved, and the high transmittance can be maintained.
On the basis of the pixel structure obtained in the first embodiment, the pixel structure of the pixel unit is applied with a voltage in the first driving manner, and the pixel unit utilizes the polarity column inversion manner, so that the white emission phenomenon can be further improved, a high transmittance can be maintained, the display is uniform, and the display effect is improved.
Further, the second driving manner includes a third sub-driving manner and a fourth sub-driving manner, and the voltages are alternately applied to the pixel structure in the third sub-driving manner or the fourth sub-driving manner at a second predetermined interval along the scanning line direction.
In one embodiment, in the scan line direction, the slave pixel structure AM1To the pixel structure AMYAnd alternately applying the first driving voltage or the second driving voltage to the corresponding pixel structure at intervals of a second set interval, for example: when the second set interval is every two pixel structures, the data line D1 and the data line D2 are respectively connected to the pixel structure aM,1And a pixel structure AM,2Pixel structure AM,1And a pixel structure AM,2The corresponding voltages are the first driving voltages, and the data line D3 and the data line D4 are respectively connected to the pixel structure AM,3And a pixel structure AM,4Pixel structure AM,3And a pixel structureAM,4The corresponding voltages are the second driving voltages, and the data line D5 and the data line D6 are respectively connected to the pixel structure AM,5And a pixel structure AM,6Pixel structure AM,5And a pixel structure AM,6Corresponding voltages are the first driving voltage, and so on, the mode is the third sub-driving mode, and meanwhile, the data line D1 and the data line D2 are respectively connected to the pixel structure aM+1,1And a pixel structure AM+1,2Pixel structure AM+1,1And a pixel structure AM+1,2The corresponding voltages are the second driving voltages, and the data line D3 and the data line D4 are respectively connected to the pixel structure AM+1,3And a pixel structure AM+1,4Pixel structure AM+1,3And a pixel structure AM+1,4The corresponding voltages are the first driving voltages, and the data line D5 and the data line D6 are respectively connected to the pixel structure AM+1,5And a pixel structure AM+1,6Pixel structure AM+1,5And a pixel structure AM+1,6And corresponding voltages are the second driving voltage, and so on, and the mode is the fourth sub-driving mode. And alternately applying a voltage to the pixel structure in a third sub-driving mode or a fourth sub-driving mode along the scanning line direction. For example, the data line D1 and the data line D2 are respectively connected to the pixel structure A11And a pixel structure A12Pixel structure A11And a pixel structure A12The data line D3 and the data line D4 are respectively connected to the pixel structure A1,3And a pixel structure A1,4Pixel structure A1,3And a pixel structure A1,4The data line D5 and the data line D6 are respectively connected to the pixel structure A1,5And a pixel structure A1,6Pixel structure A1,5And a pixel structure A1,6The voltage of the scanning line G2 is a first driving voltage, and the like, namely, a third sub-driving mode, and meanwhile, when a voltage is applied to the pixel structure corresponding to the scanning line G1 in the third sub-driving mode, a voltage is applied to the pixel structure corresponding to the scanning line G2 in the fourth sub-driving mode; the data line D1 and the data line D2 are respectively connected with the pixel structure A2,1And a pixel structure A2,2Pixel structure A2,1And a pixel structureA2,2The data line D3 and the data line D4 are respectively connected to the pixel structure A2,3And a pixel structure A2,4Pixel structure A2,3And a pixel structure A2,4The data line D5 and the data line D6 are respectively connected to the pixel structure A2,5And a pixel structure A2,6Pixel structure A2,5And a pixel structure A2,6The voltage of the first sub-driving mode is the first driving voltage, and so on, and the fourth sub-driving mode is the same. And by analogy, along the scanning line direction, correspondingly loading a voltage to the pixel structure alternately in a third sub-driving mode or a fourth sub-driving mode. In this embodiment, the second predetermined interval, i.e. every other pixel structure in the scanning line direction, is to alternately load the third sub-driving manner and the fourth sub-driving manner on the adjacent scanning lines.
In this embodiment, the second predetermined interval, i.e. every other pixel structure in the scanning line direction, is to alternately load the third sub-driving manner and the fourth sub-driving manner on the adjacent scanning lines.
In this embodiment, the second predetermined interval and the second set interval are set according to actual needs, and this embodiment is not particularly limited.
In this embodiment, the third sub-driving method and the fourth sub-driving method are sufficient to apply a voltage to the pixel structure in an alternating manner.
For example, referring to fig. 7, an 8 × 12 pixel structure is taken as an example, that is, the pixel structure includes 8 rows and 12 columns, and the second set interval is every two pixel structures in the data line direction.
The data line D1 and the data line D2 are respectively connected with the pixel structure A1,1And a pixel structure A1,2Pixel structure A1,1And a pixel structure A1,2The corresponding voltages are the first driving voltages, and the data line D3 and the data line D4 are respectively connected to the pixel structure A1,3And a pixel structure A1,4Pixel structure A1,3And a pixel structure A1,4The corresponding voltages are the second driving voltages, and the data line D5 and the data line D6 are respectively connected to the pixel structure A1,5And a pixel structure A1,6Pixel structure A1,5And imageElement structure A1,6The corresponding voltage is the first driving voltage, and so on, the data line D11 and the data line D12 are respectively connected to the pixel structure a1,11And a pixel structure A1,12Pixel structure A1,11And a pixel structure A1,12The corresponding voltages are second driving voltages; the data line D1 and the data line D2 are respectively connected with the pixel structure A2,1And a pixel structure A2,2Pixel structure A1,1And a pixel structure A1,2The corresponding voltages are the second driving voltages, and the data line D3 and the data line D4 are respectively connected to the pixel structure A2,3And a pixel structure A2,4Pixel structure A2,3And a pixel structure A2,4The corresponding voltages are the first driving voltages, and the data line D5 and the data line D6 are respectively connected to the pixel structure A2,5And a pixel structure A2,6Pixel structure A2,5And a pixel structure A2,6The corresponding voltage is the second driving voltage, and so on, the data line D11 and the data line D12 are respectively connected to the pixel structure a2,11And a pixel structure A2,12Pixel structure A2,11And a pixel structure A2,12And the corresponding voltages are the first driving voltages, and by analogy, the voltages are alternately and correspondingly loaded on the pixel structure in a first sub-driving mode or a second sub-driving mode along the scanning line direction.
In an embodiment, the voltage is alternately applied to the pixel structure in the third sub-driving mode or the fourth sub-driving mode at a second predetermined interval along the scanning line direction, and the pixel unit utilizes a polarity column inversion mode, so that the white emission phenomenon can be further improved, and a high transmittance can be maintained.
On the basis of the pixel structure obtained in the first embodiment, the voltage is applied to the pixel structure of the pixel unit in the second driving manner, and the pixel unit utilizes the polarity column inversion manner, so that the white emission phenomenon can be further improved, a high transmittance can be maintained, the display is uniform, and the display effect is improved.
In this embodiment, first gray scale data and second gray scale data are formed according to original pixel data, pixel gray scales of the first gray scale data and the second gray scale data are made different, a first driving voltage is generated according to the first gray scale data, and a second driving voltage is generated according to the second gray scale data; and loading the first driving voltage or the second driving voltage to the pixel structure along the direction of the data line in one frame. In this way, the voltage loaded on the pixel structure can be prevented from being influenced by polarity inversion, so that crosstalk and bright and dark lines are prevented.
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 correspondingly, the voltage input to the pixel structure 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.
On the basis of the pixel structure obtained in the first embodiment, voltages are applied to different pixel structures of the pixel unit by the first driving voltage and the second driving voltage, and the pixel unit utilizes a polarity column inversion mode, so that the whitening phenomenon can be further improved, a high transmittance can be maintained, the display is uniform, and the display effect is improved.
Referring to fig. 8, an embodiment of the present invention further provides a display panel, including:
a first substrate 11;
a second substrate 12 located opposite to the first substrate 11;
the pixel unit 14 according to the embodiment of the present invention is disposed between the first substrate and the second substrate;
a liquid crystal material 13 located between the first substrate and the second substrate.
The first substrate and the second substrate may be made of semiconductor materials such as glass and quartz, or organic polymers, and the material of the first substrate may be the same as or different from that of the second substrate. The main component of the liquid crystal material 13 is liquid crystal molecules, and the liquid crystal molecules are correspondingly arranged between two adjacent branch electrodes in each pixel unit, so that the liquid crystal molecules can achieve better alignment after voltage is applied, the light transmittance is improved, and the display effect is further improved.
The pixel unit and the display panel of the embodiment of the invention can achieve the dual purposes of improving the white phenomenon of the visual angle and maintaining higher transmittance without changing the processing conditions.
Referring to fig. 9, the abscissa corresponds to gray scale, the ordinate corresponds to brightness normalized value, 45 degrees and Azimuth0 represent a display panel with an included angle of 45 degrees between a branch electrode and a main electrode in the conventional design, the observation angle is front view, 45 degrees and Azimuth60 represent a display panel with an included angle of 45 degrees between a branch electrode and a main electrode in the conventional design, the observation angle is 60 degrees between the branch electrode and the main electrode, 42+45 degrees and Azimuth0 represent a display panel according to an embodiment of the present invention, and represent a display panel with a pixel structure with two sub-regions with an included angle of 45 degrees between a branch electrode and a main electrode and two sub-regions with an included angle of 42 degrees between a branch electrode and a main electrode, the observation angle is front view, 42+45 degrees and Azimuth60 represent a display panel according to an embodiment of the present invention, and the observation angle is 60 degrees between the display panel. When the display panel provided by the embodiment of the invention is observed at a viewing angle of 60 degrees, the transmittance of the display panel is 4.4 percent lower than that of the conventional design that the included angle between the branch electrode and the main electrode in the existing display panel is 45 degrees under the gray scale of 128 degrees, and the gamma (gamma) curve of the display panel is closer to that of an orthographic gamma 2.2; in the front view direction, the transmittance of the pixel structure of the display panel provided by the embodiment of the invention is only 0.38% lower than that of the pixel structure of the display panel in the existing design, and the reduction amplitude is small, so that the aim of maintaining high transmittance can be fulfilled while the phenomenon of whitish viewing angle is effectively improved.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. 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 (12)

1. A pixel structure, comprising:
a trunk electrode; and
the branch electrodes are connected with the main electrode;
the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the main electrode is a first angle, and the acute included angle of the second sub-branch electrode and the main electrode is a second angle.
2. The pixel structure of any of claim 1, wherein the first angle is equal to 45 degrees.
3. The pixel structure according to any of claim 1, wherein the second angle is equal to or greater than 40 degrees and less than 45 degrees.
4. The pixel structure according to claim 1, wherein the trunk electrode is a cross-shaped electrode, the trunk electrode divides the pixel structure into four partitions, and two adjacent branch electrodes in any one partition are parallel to each other.
5. The pixel structure according to any one of claims 4, wherein a plurality of first sub-branch electrodes are disposed in any two of the partitions, and a plurality of second sub-branch electrodes are disposed in the other two of the partitions.
6. The pixel structure of claim 4, wherein the branch electrodes in two adjacent partitions are not parallel to each other.
7. A pixel cell, comprising:
data lines, scanning lines;
a switching member electrically connecting the data line and the scan line;
the pixel structure is electrically connected with the switch piece;
wherein the pixel structure comprises: the device comprises a main electrode and a plurality of branch electrodes connected with the main electrode; the branch electrode comprises a first sub-branch electrode and a second sub-branch electrode, the acute included angle of the first sub-branch electrode and the acute included angle of the main electrode are a first angle, and the acute included angle of the second sub-branch electrode and the acute included angle of the main electrode are a second angle.
8. The pixel cell of claim 7, wherein two adjacent rows of the pixel structures are mirror symmetric.
9. The pixel unit according to claim 7, wherein the polarities of the pixel structures in two adjacent columns are opposite, and a voltage is applied to the pixel structures in the first driving mode or the second driving mode in one frame.
10. The pixel cell of claim 9, wherein the first driving scheme comprises a first sub-driving scheme and a second sub-driving scheme, and wherein the voltages are alternately applied to the pixel structure in the first sub-driving scheme or the second sub-driving scheme at first predetermined intervals along the scan line direction within a frame.
11. The pixel unit according to claim 9, wherein the second driving scheme comprises a third sub-driving scheme and a fourth sub-driving scheme, and the voltages are alternately applied to the pixel structure in the third sub-driving scheme or the fourth sub-driving scheme at second predetermined intervals along the scan line direction within one frame.
12. A display panel, comprising:
a first substrate;
a second substrate located opposite to the first substrate;
the pixel cell of any one of claims 7-11 disposed between the first substrate and the second substrate;
a liquid crystal material between the first substrate and the second substrate.
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