CN110955085A - Pixel structure, pixel unit and display panel - Google Patents
Pixel structure, pixel unit and 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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Abstract
The invention discloses a pixel structure, comprising: a first subpixel structure and a first subpixel structure, wherein: the first sub-pixel structure comprises a first main electrode and a first branch electrode, the first branch electrode is connected with the first main electrode, and an acute included angle between the first branch electrode and the first main electrode is a first angle; the second sub-pixel structure comprises a second main electrode and a second branch electrode, the second branch electrode is connected with the second main electrode, and an acute included angle between the second branch electrode and the second main electrode is a second angle. The pixel structure comprises a first sub-pixel structure and a first sub-pixel structure, wherein an acute angle included angle between a first branch electrode and a first main electrode in the first sub-pixel structure is a first angle, and an acute angle included angle between a second branch electrode and a second main electrode in the second sub-pixel structure is a second angle, so that the phenomenon of whitening in side view is solved.
Description
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 first subpixel structure and a first subpixel structure, wherein:
the first sub-pixel structure comprises a first main electrode and a first branch electrode, the first branch electrode is connected with the first main electrode, and an acute included angle between the first branch electrode and the first main electrode is a first angle;
the second sub-pixel structure comprises a second main electrode and a second branch electrode, the second branch electrode is connected with the second main electrode, and an acute included angle between the second branch electrode and the second main electrode is a second angle.
In one embodiment, the first angle is greater than or equal to 40 degrees and less than 45 degrees.
In a particular embodiment, the second angle is equal to 45 degrees.
In a specific embodiment, the first main electrode is a cross-shaped electrode, the first main electrode divides the first sub-pixel structure into four first partitions, and two adjacent first branch electrodes in any one of the first partitions are parallel to each other.
In a specific embodiment, two adjacent first partitions are symmetrical along the first main electrode.
In a specific embodiment, the first branch electrodes in two adjacent first partitions are not parallel to each other.
In a specific embodiment, the second main electrode is a cross-shaped electrode, the second main electrode divides the second sub-pixel structure into four second partitions, and two adjacent second branch electrodes in any one of the second partitions are parallel to each other.
In a specific embodiment, two adjacent second partitions are symmetrical along the second main electrode.
In a specific embodiment, the second branch electrodes in two adjacent second partitions are not parallel to each other.
The invention also provides a pixel unit, a data line and a scanning line;
a switching member electrically connecting the data lines and the scan lines,
the pixel structures according to any of the above embodiments, electrically connected to the switch element.
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:
the pixel structure comprises a first sub-pixel structure and a first sub-pixel structure, wherein an acute angle included angle between a first branch electrode and a first main electrode in the first sub-pixel structure is a first angle, and an acute angle included angle between a second branch electrode and a second main electrode in the second sub-pixel structure is a second angle, so that the phenomenon of whitening 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 structural diagram of a pixel unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram 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 first subpixel structure 101 and a first subpixel structure 102, wherein:
the first sub-pixel structure 101 includes a first main electrode 1011 and a first branch electrode 1012, the first branch electrode 1012 is connected to the first main electrode 1011, and an acute included angle between the first branch electrode 1012 and the first main electrode 1011 is a first angle;
the second sub-pixel structure 102 includes a second trunk electrode 1021 and a second branch electrode 1022, the second branch electrode 1022 is connected to the second trunk electrode 1021, and an acute included angle between the second branch electrode 1022 and the second trunk electrode 1021 is a second angle.
In one embodiment, the first angle is equal to or greater than 40 degrees and less than 45 degrees, and the second angle is equal to 45 degrees.
In the present embodiment, referring to fig. 2, the first sub-pixel structure corresponds to a bright area, when the gray scale is low (below 32), only the first sub-pixel structure is driven to emit light, the second sub-pixel structure corresponds to a dark area, and when the gray scale is high (above 32), the second sub-pixel structure is also driven to emit light.
The acute included angle between the first branch electrode and the first main electrode in the first sub-pixel structure is a first angle, the first angle is set to be more than or equal to 40 degrees and less than 45 degrees, the acute included angle between the second branch electrode and the second main electrode in the second sub-pixel structure is a second angle, and the second angle is set to be equal to 45 degrees, so that only the first sub-pixel structure is driven to emit light when low gray scale (for example, low gray scale is below 32 gray scale), the whitening phenomenon appearing when side view is removed, and the second sub-pixel structure is also driven to emit light when high gray scale (for example, high gray scale is above 32 gray scale), thereby ensuring that the pixel structure has higher transmittance, making display more uniform, and improving display effect.
Preferably, the first angle is 42 degrees.
When the acute angle between the first branch electrode 1012 and the main electrode in a pixel structure is 42 degrees and the acute angle between the second branch electrode 1022 and the main electrode is 42 degrees, the effect of removing the whitening phenomenon is the best in the side view, and the pixel structure can be ensured to have higher transmittance.
In this embodiment, the first main electrode 1011 and the second main electrode 1021 are both in the shape of a strip, wherein the first branch electrodes 1012 are disposed on two sides of the first main electrode 1011, each first branch electrode 1012 is also in the shape of a strip and is connected to the first main electrode 1011, a slit is formed between every two adjacent first branch electrodes 1012 and extends to the edge of the first sub-pixel structure 101, and the slit is generally called an alignment slit; the second branch electrodes 1022 are disposed on two sides of the second main electrode 1021, each second branch electrode 1022 is also in a strip shape and is connected to the second main electrode 1021, a slit is formed between a gap between every two adjacent second branch electrodes 1022 and extends to an edge of the second sub-pixel structure 102, and the first sub-pixel structure 101 is connected to the second sub-pixel structure 102.
In one embodiment, the first main electrode 1011 is a cross-shaped electrode, the first sub-pixel structure 101 is divided into four first partitions by the first main electrode 1011, and two adjacent first branch electrodes 1012 in any one first partition are parallel to each other.
In one embodiment, an included angle between the first branch electrode and the first trunk electrode in the horizontal direction is a first angle.
In one embodiment, referring to fig. 1 again, the first main electrode 1011 is a cross-shaped electrode, the cross-shaped electrode divides the first sub-pixel structure 101 into four first partitions, namely a1, a2, A3 and a4, wherein the a1 partition is adjacent to the a2 partition and the A3 partition, and in the four first partitions, the first branch electrode 1012 in each first partition is connected to the first main electrode 1011, so that the electrodes are interconnected. For one of the four first sub-areas, all the first branch electrodes 1012 in each first sub-area have the same inclination direction, that is, two adjacent first branch electrodes 1012 in any one first sub-area 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 first sub-pixel structure 101, and the inclination direction of the first branch electrode 1012 in the first division is also inclined toward the upper left.
Preferably, the first branch electrodes 1012 in adjacent two first 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 first sub-pixel structure 101, and the inclination direction of the first branch electrode 1012 in the first division is also inclined toward the upper right; taking the A3 division as an example, the A3 division relative position is located at the lower left of the first sub-pixel structure 101, and the inclination direction of the first branch electrode 1012 in the first division is also inclined toward the lower left direction, and taking the a4 division as an example, the a4 division relative position is located at the lower right of the first sub-pixel structure 101, and the inclination direction of the first branch electrode 1012 in the first division is also inclined toward the lower right direction; that is, the orientation of any one of the first branch electrodes 1012 in the a1 division and any one of the first branch electrodes 1012 in the a2 division is different, that is, the first branch electrode 1012 in the a1 division is not parallel to the first branch electrode 1012 in the a2 division, and likewise, the first branch electrode 1012 in the a1 division is not parallel to the first branch electrode 1012 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.
In one embodiment, the second stem electrode 1021 is a cross-shaped electrode, the second stem electrode 1021 divides the second sub-pixel structure into four second partitions, and two adjacent second branch electrodes in any one second partition are parallel to each other.
In one embodiment, the included angle between the second branch electrode 1022 and the horizontal direction of the second stem electrode 1021 is a second angle.
In one embodiment, referring to fig. 1 again, the second main electrode 1021 is a cross-shaped electrode, the cross-shaped electrode divides the second sub-pixel structure 102 into four second partitions, i.e., a5, a6, a7, and A8, wherein the a5 partition is adjacent to the a6 partition and the a7 partition, and the second branch electrodes 1022 in each of the four second partitions are connected to the second main electrode 1021, so as to interconnect and communicate the electrodes. For one of the four second sub-areas, the inclination directions of all the second branch electrodes 1022 in each second sub-area are the same, that is, two adjacent second branch electrodes 1022 in any one second sub-area are parallel to each other.
Taking the a5 division as an example, the relative position of the a5 division is located at the upper left of the second sub-pixel structure 102, and the inclined direction of the second branch electrode 1022 in the second division is also inclined toward the upper left.
Preferably, the second branch electrodes 1022 in adjacent two second partitions are not parallel to each other.
That is, taking the a6 sub-area as an example, the relative position of the a6 sub-area is located at the upper right of the second sub-pixel structure 102, and the inclined direction of the second branch electrode 1022 in the second sub-area is also inclined toward the upper right; taking the a7 division as an example, the a7 division relative position is located at the lower left of the second sub-pixel structure 102, and the tilt direction of the second branch electrode 1022 in the second division is also tilted toward the lower left direction, taking the A8 division as an example, the A8 division relative position is located at the lower right of the second sub-pixel structure 102, and the tilt direction of the second branch electrode 1022 in the second division is also tilted toward the lower right direction; that is, the orientation of any one of the second branch electrodes 1022 in the a5 division region is different from that of any one of the second branch electrodes 1022 in the a6 division region, i.e., the second branch electrode 1022 in the a5 division region is not parallel to the second branch electrode 1022 in the a6 division region, and likewise, the second branch electrode 1022 in the a5 division region is not parallel to the second branch electrode 1022 in the a7 division region. The arrangement of the electrodes in the above direction can improve the problem of color shift of display after voltage application.
In one embodiment, referring to fig. 1 again, two adjacent first partitions are symmetrical along the first main electrode 1011, and the first main electrode 1011 is a cross-shaped electrode. Namely: in the first sub-pixel structure 101, the a1 partition is adjacent to the a2 partition and the A3 partition, the a1 partition and the a2 partition are symmetric along the longitudinal axis of the first stem electrode 1011, and the a1 partition and the A3 partition are symmetric along the transverse axis of the first stem electrode 1011; the a4 partition is adjacent to the a2 partition and the A3 partition, the a2 partition and the a4 partition are symmetric along the lateral axis of the first main electrode 1011, and the A3 partition and the a4 partition are symmetric along the longitudinal axis of the first main electrode 1011.
In one embodiment, referring to fig. 1 again, two adjacent second partitions are symmetrical along the second stem electrode 1021, and the second stem electrode 1021 is a cross-shaped electrode. Namely: in the second sub-pixel structure 102, the a5 partition is adjacent to the a6 partition and the a7 partition, the a5 partition and the a6 partition are symmetrical along a longitudinal axis of the second stem electrode 1021, and the a5 partition and the a7 partition are symmetrical along a transverse axis of the second stem electrode 1021; the A8 division is adjacent to the a6 division and the a7 division, the a6 division and the A8 division are symmetrical along a transverse axis of the second stem electrode 1021, and the a7 division and the A8 division are symmetrical along a longitudinal axis of the second stem electrode 1021.
This embodiment sets up two adjacent first subregion along first trunk electrode symmetry, sets up two adjacent second subregion along second trunk electrode symmetry simultaneously, can further improve the whitish phenomenon when different visual angles are observed to promote display effect.
In the embodiment of the invention, the acute angle between the first branch electrode and the first main electrode in the first sub-pixel structure is a first angle, and the acute angle between the second branch electrode and the second main electrode in the second sub-pixel structure is a second angle, so that only the first sub-pixel structure is driven to emit light at a low gray scale, thereby removing the whitening phenomenon appearing at a side view, and the second sub-pixel structure is also driven to emit light at a high gray scale, thereby ensuring that the pixel structure has higher transmittance, thereby enabling the display to be more uniform and improving the display effect.
Example two
Referring to fig. 3, fig. 3 is a schematic diagram 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:
a switching member 203 electrically connecting the data line 201 and the scan line 202;
and the pixel structure is electrically connected with the switch piece 203.
Wherein, the pixel structure includes:
a first subpixel structure 101 and a first subpixel structure 102, wherein:
the first sub-pixel structure 101 includes a first main electrode 1011 and a first branch electrode 1012, the first branch electrode 1012 is connected to the first main electrode 1011, and an acute included angle between the first branch electrode 1012 and the first main electrode 1011 is a first angle;
the second sub-pixel structure 102 includes a second trunk electrode 1021 and a second branch electrode 1022, the second branch electrode 1022 is connected to the second trunk electrode 1021, and an acute included angle between the second branch electrode 1022 and the second trunk electrode 1021 is a second angle.
In this embodiment, please refer to fig. 3 again, the data line 201 is disposed 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 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 structures, and the scan driving signals control whether data driving signals are loaded to the pixel structures. 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. When the TFT array substrate is in work, the scanning driving circuit generates scanning driving signals which are transmitted to the grid electrode of the TFT through the scanning line so as to control the grid electrode to be conducted, at the moment, the data driving signals generated by the data driving circuit are transmitted to the source electrode of the TFT through the scanning line, at the moment, the grid electrode of the TFT is conducted, and the data driving signals of the source electrode are input into the pixel structure to complete one-time driving.
Referring to fig. 4, fig. 4 is a schematic view of a display panel structure according to an embodiment of the present invention. 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 first branch electrodes or two second branch electrodes in each pixel unit, so that the liquid crystal molecules can achieve better alignment after voltage is loaded, 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.
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 (11)
1. A pixel structure, comprising: a first subpixel structure and a first subpixel structure, wherein:
the first sub-pixel structure comprises a first main electrode and a first branch electrode, the first branch electrode is connected with the first main electrode, and an acute included angle between the first branch electrode and the first main electrode is a first angle;
the second sub-pixel structure comprises a second main electrode and a second branch electrode, the second branch electrode is connected with the second main electrode, and an acute included angle between the second branch electrode and the second main electrode is a second angle.
2. The pixel structure of claim 1, wherein the first angle is greater than or equal to 40 degrees and less than 45 degrees.
3. The pixel structure of claim 1, wherein the second angle is equal to 45 degrees.
4. The pixel structure according to claim 1, wherein the first trunk electrode is a cross-shaped electrode, the first trunk electrode divides the first sub-pixel structure into four first partitions, and two adjacent first branch electrodes in any one first partition are parallel to each other.
5. The pixel structure of claim 4, wherein two adjacent first partitions are symmetrical along the first main electrode.
6. The pixel structure according to claim 4, wherein the first branch electrodes in two adjacent first partitions are not parallel to each other.
7. The pixel structure according to claim 1, wherein the second main electrode is a cross-shaped electrode, the second main electrode divides the second sub-pixel structure into four second partitions, and two adjacent second branch electrodes in any one of the second partitions are parallel to each other.
8. The pixel structure of claim 7, wherein two adjacent second partitions are symmetrical along the second main electrode.
9. The pixel structure according to claim 7, wherein the second branch electrodes in two adjacent second partitions are not parallel to each other.
10. A pixel cell, further comprising:
data lines, scanning lines;
a switching member electrically connecting the data lines and the scan lines,
a number of pixel structures as claimed in any one of claims 1-9 electrically connecting the switching elements.
11. A display panel, comprising:
a first substrate;
a second substrate located opposite to the first substrate;
the pixel cell of claim 10 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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| Application Number | Priority Date | Filing Date | Title |
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| CN201811124468.6A CN110955085A (en) | 2018-09-26 | 2018-09-26 | Pixel structure, pixel unit and display panel |
| US16/556,356 US11092858B2 (en) | 2018-09-26 | 2019-08-30 | Pixel structure and pixel unit |
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| CN201811124468.6A CN110955085A (en) | 2018-09-26 | 2018-09-26 | Pixel structure, pixel unit and display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111538191A (en) * | 2020-05-29 | 2020-08-14 | Tcl华星光电技术有限公司 | Display panel and display device |
| CN111679516A (en) * | 2020-06-05 | 2020-09-18 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and liquid crystal display panel |
| WO2023216292A1 (en) * | 2022-05-09 | 2023-11-16 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and mobile terminal |
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