CN104267547B - A kind of array base palte and display device - Google Patents
A kind of array base palte and display device Download PDFInfo
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- CN104267547B CN104267547B CN201410491953.2A CN201410491953A CN104267547B CN 104267547 B CN104267547 B CN 104267547B CN 201410491953 A CN201410491953 A CN 201410491953A CN 104267547 B CN104267547 B CN 104267547B
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 48
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 24
- 238000002834 transmittance Methods 0.000 description 22
- 230000007547 defect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- 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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134327—Segmented, e.g. alpha numeric display
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The embodiment of the invention discloses a kind of array base palte and display device, are related to display technology field, can improve display device dipped beam end and distance light end luminance nonuniformity it is bad.The array base palte includes multiple pixel cells of matrix form arrangement, each described pixel cell includes at least one gap electrode, there is between the bearing of trend and liquid crystal molecule initial orientation of the slit of the gap electrode certain angle, the angle edge between the bearing of trend and liquid crystal molecule initial orientation of the slit of the gap electrode gradually increases away from light source direction.
Description
Technical Field
The invention relates to the technical field of display, in particular to an array substrate and a display device.
Background
The liquid crystal display is a flat ultrathin display device, which mainly comprises a backlight module and a display panel. Among them, the commonly used backlight module is a side-in type backlight module.
Specifically, the lateral backlight module comprises a light source and a light guide plate, wherein the light source is positioned on one side of the light guide plate, and light emitted by the light source is emitted from a light emitting surface of the light guide plate after being scattered by the light guide plate, so that the light is provided for the display panel. A commonly used light source includes a plurality of Light Emitting Diodes (LEDs). In the display process of the liquid crystal display, the LED generates a large amount of heat when emitting light, so that the temperature of the liquid crystal molecules at the near end (the end close to the light source) of the display panel is high, and the temperature of the liquid crystal molecules at the far end (the end far away from the light source) is low.
The inventors found that the refractive index, dielectric constant, and the like of the liquid crystal molecules vary with temperature, and specifically that when the liquid crystal molecules are in the same deflection state, the light-adjusting effect of the liquid crystal molecules increases with decreasing temperature, and thus, the liquid crystal display has a defect that the luminance is not uniform at the near-light end and the far-light end during the display process.
Disclosure of Invention
The present invention is directed to an array substrate and a display device, which can improve the problem of uneven brightness at the near end and the far end of the display device.
In order to solve the above technical problems, an embodiment of the present invention provides an array substrate, which adopts the following technical scheme:
the array substrate comprises a plurality of pixel units arranged in a matrix manner, wherein each pixel unit comprises at least one slit electrode, a certain included angle is formed between the extending direction of slits of the slit electrodes and the initial orientation of liquid crystal molecules, and the included angle formed between the extending direction of the slits of the slit electrodes and the initial orientation of the liquid crystal molecules is gradually increased along the direction far away from a light source.
An included angle between the extending direction of the slit electrode in the pixel unit farthest from the light source and the initial orientation of the liquid crystal molecules is thetan, and an included angle between the extending direction of the slit electrode in the pixel unit closest to the light source and the initial orientation of the liquid crystal molecules is theta 1, wherein n is the number of rows or columns of the pixel unit along the direction perpendicular to the light source;
from the pixel unit closest to the light source, the extending direction of the slits of the slit electrodes in each m rows or m columns of the pixel units has the same included angle with the initial orientation of the liquid crystal molecules, and m is a positive integer smaller than n;
the angle between the extending direction of the slits of the slit electrodes in the pixel units from the (i-1) × m +1 th row to the i × m th row or from the (i-1) × m +1 th column to the i × m th column is theta i, wherein i is a positive integer greater than or equal to 1 and less than or equal to n/m, if n/m is an integer, the angle is equal to or greater than 1If n/m is a non-integer, let k be the integer of n/m,
m is 1, the included angle between the extending direction of the slit electrode in the pixel unit of the ith row or the ith column and the initial orientation of the liquid crystal molecules is thetai, wherein i is a positive integer which is more than or equal to 1 and less than or equal to n,
the extending directions of all the slits of the slit electrodes in the pixel unit are the same.
The extending directions of the slits on the two sides of the central line of the slit electrode in the pixel unit are mutually symmetrical by taking the central line as a symmetry axis.
The pixel unit comprises one slit electrode and one plate electrode which are insulated from each other, or the pixel unit comprises two slit electrodes which are arranged on the same layer and insulated from each other, wherein a slit of one slit electrode and a slit of the other slit electrode are arranged at intervals.
The embodiment of the invention provides an array substrate, which comprises a slit electrode, wherein a certain included angle is formed between a slit of the slit electrode and the initial orientation of liquid crystal molecules, the included angle is gradually increased along the direction away from a light source, the maximum transmittance of a pixel unit is reduced along with the increase of the included angle, and the voltage of the slit electrode corresponding to the maximum transmittance is increased along with the increase of the included angle, so that the voltage on the slit electrode is the same, the transmittance of the pixel unit is reduced along with the increase of the included angle, the influence of the liquid crystal molecules on the light regulation effect caused by the temperature difference between the near light end and the far light end of a display device can be reduced, and the defect of uneven brightness of the near light end and the far light end of the display device is improved.
In addition, an embodiment of the present invention further provides a display device, which includes the array substrate in any one of the above embodiments.
The embodiment of the invention provides a display device, which comprises an array substrate and a plurality of slit electrodes, wherein the array substrate comprises a slit electrode, a certain included angle is formed between a slit of the slit electrode and the initial orientation of liquid crystal molecules, the included angle is gradually increased along the direction away from a light source, the maximum transmittance of a pixel unit is reduced along with the increase of the included angle, the voltage of the slit electrode corresponding to the maximum transmittance is increased along with the increase of the included angle, and therefore, when the voltages on the slit electrodes are the same, the transmittance of the pixel unit is reduced along with the increase of the included angle, the influence of the liquid crystal molecules on the light regulation effect caused by the temperature difference between the near light end and the far light end of the display device can be reduced, and the defect of uneven brightness of the near light end and the far light end of the display device is.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic plan view illustrating a first array substrate according to an embodiment of the present invention;
FIG. 2 is a graph showing the relationship between the transmittance of a pixel unit and the angle between the slit electrode 3 and the initial alignment of liquid crystal molecules in the pixel unit according to an embodiment of the present invention;
fig. 3 is a graph of transmittance T of the pixel unit according to the included angle when V is 5.7V in fig. 2, and a graph of maximum transmittance Ttop of the pixel unit according to the included angle in fig. 2;
fig. 4 is a schematic plan view of a second array substrate according to an embodiment of the invention.
Description of reference numerals:
1-a gate line; 2-data line; 3-a slit electrode;
31-slit.
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 some, not all, embodiments of the present invention. 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.
The embodiment of the invention provides an array substrate and a display device, which can improve the defect of uneven brightness of a near light end and a far light end.
Specifically, as shown in fig. 1, the array substrate includes a gate line 1 and a data line 2 which are criss-cross, the gate line 1 and the data line 2 enclose a pixel unit, a plurality of pixel units are arranged in a matrix form, each pixel unit includes at least one slit electrode 3, a certain included angle is formed between an extending direction of a slit 31 of the slit electrode 3 and an initial orientation of liquid crystal molecules, and the included angle gradually increases along a direction away from a light source. Exemplarily, in the embodiment of the present invention, the liquid crystal molecules are initially aligned in a direction parallel to the gate line 1.
Figure 2 is a graph of the relationship between the transmittance of the pixel cell and the angle between the direction of extension of the slits 31 and the initial orientation of the liquid crystal molecules, fig. 2 shows a graph of the change of the transmittance T of the pixel unit with the included angle when the operating temperature of the pixel unit is 25 ℃, fig. 3 shows a graph of the change of the transmittance T of the pixel unit with the included angle when the voltage V across the slit electrode in fig. 2 is 5.7V, and a graph of the change of the maximum transmittance Ttop of the pixel unit with the included angle in fig. 2, as shown in fig. 2 and 3, as the angle between the extending direction of the slits 31 of the slit electrode 3 in the pixel unit and the initial orientation of the liquid crystal molecules increases, the maximum transmittance Ttop of the pixel unit decreases, the voltage across the slit electrode 3 corresponding to the maximum transmittance Ttop increases, when the voltages on the slit electrodes 3 are the same, the liquid crystal molecules in the pixel units with different included angles are different in deflection state, so that the transmittance of the pixel units is reduced along with the increase of the included angles. Therefore, in the embodiment of the present invention, the included angle between the extending direction of the slit 31 of the slit electrode 3 in the pixel unit and the initial orientation of the liquid crystal molecules gradually increases along the direction away from the light source, so as to reduce the influence of the liquid crystal molecules on the light adjusting effect caused by the temperature difference between the near end and the far end of the display device, and further improve the defect of uneven luminance of the near end and the far end of the display device.
Further, an angle between the extending direction of the slit 31 of the slit electrode 3 in the pixel unit farthest from the light source and the initial orientation of the liquid crystal molecules is θ n, and an angle between the extending direction of the slit 31 of the slit electrode 3 in the pixel unit closest to the light source and the initial orientation of the liquid crystal molecules is θ 1, where n is the number of rows or columns of the pixel unit in the direction perpendicular to the light source.
The extending direction of the slits 31 of the slit electrodes 3 in each m rows or m columns of pixel units from the pixel unit closest to the light source has the same angle with the initial orientation of the liquid crystal molecules, and m is a positive integer smaller than n, that is, the angle between the extending direction of the slits 31 of the slit electrodes 3 in the pixel unit and the initial orientation of the liquid crystal molecules increases every m rows or m columns.
At this time, the angle between the extending direction of the slits 31 of the slit electrodes 3 in the pixel cells of the (i-1) × m +1 th to i × m th rows or the (i-1) × m +1 th to i × m th columns and the initial orientation of the liquid crystal molecules is θ i, where i is a positive integer of 1 or more and n/m or less, and if n/m is an integer, thenIf n/m is a non-integer, let k be the integer of n/m,
when the included angle between the extending direction of the slits 31 of the slit electrodes 3 in the pixel units and the initial orientation of the liquid crystal molecules gradually increases along the direction away from the light source, where m is 1, the included angle between the extending direction of the slits 31 of the slit electrodes 3 in the pixel units in the ith row or ith column and the initial orientation of the liquid crystal molecules is θ i, where i is a positive integer greater than or equal to 1 and less than or equal to n,
further, as shown in fig. 4, the extending directions of all the slits 31 of the slit electrode 3 in the pixel unit in the embodiment of the present invention are the same, or, as shown in fig. 1, the extending directions of the slits 31 located at both sides of the center line of the slit electrode 3 in the pixel unit are symmetrical to each other with the center line as the symmetry axis. When the extending directions of the slits 31 at two sides of the center line of the slit electrode 3 in the pixel unit are symmetric with the center line as the symmetry axis, the electric field directions at two sides of the center line of the slit electrode 3 are symmetric with the center line as the symmetry axis during the display process of the pixel unit, so that the deflection states of the liquid crystal molecules in the pixel unit are also symmetric along the center line, and the pixel unit can perform self-compensation, thereby reducing the color difference of the display device to a certain extent (the color difference is the phenomenon that the display states of the display device at different viewing angles are different and the colors displayed at different viewing angles are different).
Further, the pixel unit may include one slit electrode 3 and one plate electrode insulated from each other, in which case the display mode of the display device is ADS mode or FFS mode, or the pixel unit may also include two slit electrodes 3 insulated from each other and disposed on the same layer, in which the slit 31 of one slit electrode 3 is disposed at an interval from the slit 31 of the other slit electrode 3, in which case the display mode of the display device is IPS mode.
It should be noted that the array substrate provided in the embodiment of the present invention may further include other structures such as a thin film transistor and a passivation layer, and those skilled in the art can obtain the array substrate based on the embodiment of the present invention without any creative work, and the embodiment of the present invention is not described in detail.
The embodiment of the invention provides an array substrate, which comprises a slit electrode, wherein a certain included angle is formed between a slit of the slit electrode and the initial orientation of liquid crystal molecules, the included angle is gradually increased along the direction away from a light source, the maximum transmittance of a pixel unit is reduced along with the increase of the included angle, and the voltage of the slit electrode corresponding to the maximum transmittance is increased along with the increase of the included angle, so that the voltage on the slit electrode is the same, the transmittance of the pixel unit is reduced along with the increase of the included angle, the influence of the liquid crystal molecules on the light regulation effect caused by the temperature difference between the near light end and the far light end of a display device can be reduced, and the defect of uneven brightness of the near light end and the far light end of the display device is improved.
In addition, an embodiment of the present invention further provides a display device, which includes the array substrate in any one of the above embodiments. The display device may be: the display device comprises any product or component with a display function, such as a liquid crystal panel, electronic paper, an organic light-emitting display panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
The embodiment of the invention provides a display device, which comprises an array substrate and a plurality of slit electrodes, wherein the array substrate comprises a slit electrode, a certain included angle is formed between a slit of the slit electrode and the initial orientation of liquid crystal molecules, the included angle is gradually increased along the direction away from a light source, the maximum transmittance of a pixel unit is reduced along with the increase of the included angle, the voltage of the slit electrode corresponding to the maximum transmittance is increased along with the increase of the included angle, and therefore, when the voltages on the slit electrodes are the same, the transmittance of the pixel unit is reduced along with the increase of the included angle, the influence of the liquid crystal molecules on the light regulation effect caused by the temperature difference between the near light end and the far light end of the display device can be reduced, and the defect of uneven brightness of the near light end and the far light end of the display device is.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. An array substrate comprises a plurality of pixel units arranged in a matrix form, each pixel unit comprises at least one slit electrode, and an included angle is formed between the extending direction of slits of the slit electrodes and the initial orientation of liquid crystal molecules,
the included angle between the extending direction of the slit electrode and the initial orientation of the liquid crystal molecules is gradually increased along the direction far away from the light source; wherein,
the extending directions of all the slits of the slit electrode in the pixel unit are the same, or the extending directions of the slits on both sides of the central line of the slit electrode in the pixel unit are mutually symmetrical by taking the central line as a symmetry axis.
2. The array substrate of claim 1,
an included angle between the extending direction of the slit electrode in the pixel unit farthest from the light source and the initial orientation of the liquid crystal molecules is thetan, and an included angle between the extending direction of the slit electrode in the pixel unit closest to the light source and the initial orientation of the liquid crystal molecules is theta 1, wherein n is the number of rows or columns of the pixel unit along the direction perpendicular to the light source;
from the pixel unit closest to the light source, the extending direction of the slits of the slit electrodes in each m rows or m columns of the pixel units has the same included angle with the initial orientation of the liquid crystal molecules, and m is a positive integer smaller than n;
an angle between the extending direction of the slits of the slit electrodes in the pixel cells of the (i-1) th line × m +1 to the i × m th line or the (i-1) th column × m +1 to the i × m th column and the initial orientation of the liquid crystal molecules is thetai, wherein i is a positive integer of 1 or more and n/m or less,if n/m is an integer, thenIf n/m is a non-integer, let k be the integer of n/m,
3. the array substrate of claim 2,
m is 1, and the extending direction of the slit electrode in the pixel unit of the ith row or the ith column is initially taken with the liquid crystal moleculesThe included angle between the directions is theta i, wherein i is a positive integer which is more than or equal to 1 and less than or equal to n,
4. the array substrate of claim 1, wherein the pixel unit comprises one of the slit electrodes and one of the plate electrodes, which are insulated from each other, or the pixel unit comprises two of the slit electrodes, which are arranged in the same layer and insulated from each other, wherein the slit of one of the slit electrodes is arranged at a distance from the slit of the other slit electrode.
5. A display device comprising the array substrate according to any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410491953.2A CN104267547B (en) | 2014-09-24 | 2014-09-24 | A kind of array base palte and display device |
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| CN201410491953.2A CN104267547B (en) | 2014-09-24 | 2014-09-24 | A kind of array base palte and display device |
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| CN104267547B true CN104267547B (en) | 2017-03-29 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037643A (en) | 2017-06-01 | 2017-08-11 | 厦门天马微电子有限公司 | Liquid crystal display panel and display device |
| TWI632537B (en) * | 2017-08-25 | 2018-08-11 | 友達光電股份有限公司 | Liquid crystal display panel |
| CN107561792A (en) * | 2017-09-26 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of array base palte and display device |
| CN108363251B (en) * | 2018-04-25 | 2021-08-31 | 京东方科技集团股份有限公司 | Array substrate, liquid crystal display panel and display device |
| CN108732805B (en) * | 2018-05-28 | 2021-09-14 | 京东方科技集团股份有限公司 | Display substrate, display panel and display device |
| CN109188784B (en) | 2018-10-29 | 2022-02-22 | 合肥鑫晟光电科技有限公司 | Display substrate, manufacturing method thereof and display device |
| CN114815418B (en) * | 2022-03-30 | 2023-10-24 | 长沙惠科光电有限公司 | Display panel and display device |
| CN114815387B (en) * | 2022-03-30 | 2023-10-24 | 长沙惠科光电有限公司 | Display panel and display device |
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