CN203025452U - Array substrate and display device - Google Patents
Array substrate and display device Download PDFInfo
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- CN203025452U CN203025452U CN 201320043275 CN201320043275U CN203025452U CN 203025452 U CN203025452 U CN 203025452U CN 201320043275 CN201320043275 CN 201320043275 CN 201320043275 U CN201320043275 U CN 201320043275U CN 203025452 U CN203025452 U CN 203025452U
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Abstract
The embodiment of the utility model provides an array substrate and a display device, which relate to the technical field of display. The array substrate can widen the visual angle of the display device and improve the quality of the display device. The array substrate comprises at least one array structure. Each array structure comprises a first pixel unit, a second pixel unit and a third pixel unit line by line, wherein the first pixel unit and the third pixel unit respectively have a single-domain inclination direction; the second pixel unit has a multi-domain inclination direction; the first pixel unit is different from the third pixel unit in the domain inclination direction; and the second pixel unit has the same domain inclination direction with the third pixel unit at one side close to the first pixel unit and has the same domain inclination direction with the first pixel unit at one side close to the third pixel unit.
Description
Technical field
The utility model relates to the display technique field, relates in particular to a kind of array base palte and display device.
Background technology
Along with the development of lcd technology, has the favor that FFS (Fringe Field Switching, the fringe field switching) liquid crystal display of high aperture and wider visual angle has more obtained more and more people.
In order further to improve display performance, present FFS liquid crystal display adopts the picture element array structure on single domain or two farmlands mostly.concrete, as shown in Figure 1a, the vergence direction of pixel electrode 11 is identical in the liquid crystal display that adopts the single domain pixel, under "on" position, liquid crystal molecule 12 will be arranged according to same direction, a kind of like this liquid crystal display of dot structure has higher light transmission rate, but its weak point is that the contrast of liquid crystal display is lower and has colour cast, especially in the situation that oblique viewing angle, the viewed display contrast's effect of user is as shown in Fig. 1 b, can see, especially as the user when 225 ° or 315 ° of angles are observed, contrast is relatively relatively poor, the visual angle is very undesirable.For the liquid crystal display of employing shown in Figure 2 pair farmlands pixel, the first half 211 of the pixel electrode 21 in each pixel cell and Lower Half 212 are symmetrical incline structure, under "on" position, the liquid crystal molecule 22 that is positioned at half area has rightabout inclination angle, namely exists two different liquid crystal farmlands in single pixel region.Compare with the single domain pixel, although two farmlands pixel contrast increase, exist equally oblique viewing angle the undesirable problem of situation downwards angle of visibility.Prior art still is difficult to address this problem.
The utility model content
Embodiment of the present utility model provides a kind of array base palte and display device, can improve the visual angle of display device, improves the quality of display device.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The one side of the utility model embodiment provides a kind of array base palte, comprises at least one array structure.
Described array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line;
Described the first pixel cell and described the 3rd pixel cell have the single domain vergence direction, and described the second pixel cell has the multidomain vergence direction;
The farmland vergence direction of described the first pixel cell is different from the farmland vergence direction of described the 3rd pixel cell;
Described the second pixel cell is identical with the farmland vergence direction of described the 3rd pixel cell near the farmland vergence direction of described the first pixel cell one side, and its farmland vergence direction near described the 3rd pixel cell one side is identical with the farmland vergence direction of described the first pixel cell.
Wherein, described pixel cell can be formed by grid line and the data line division that transverse and longitudinal is intersected;
Each described pixel cell comprises the first electrode of pectination and the second planar electrode; Described the first electrode incline is arranged, and is used for driving liquid crystal molecule and produces the farmland vergence direction.
Concrete, described the second pixel cell can be two domain structures.
Further, described the first electrode in described the first pixel cell zone predetermined angle that is tilted to the right, described the first electrode in described the 3rd pixel cell zone described predetermined angle that is tilted to the left, described first electrode of close described the first pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the left, described first electrode of close described the 3rd pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the right; Or,
Described the first electrode in described the first pixel cell zone predetermined angle that is tilted to the left, described the first electrode in described the 3rd pixel cell zone described predetermined angle that is tilted to the right, described first electrode of close described the first pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the right, described first electrode of close described the 3rd pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the left.
In the utility model embodiment, described predetermined angle can be in 5 ° to 7 ° scopes.
Further, the described data line that is positioned at each described pixel cell both sides can be identical with the described first electrode incline angle of described pixel cell.
Described the first electrode is pixel electrode, and described the second electrode is public electrode; Or,
Described the first electrode is public electrode, and described the second electrode is pixel electrode.
The farmland vergence direction of described array structure inside is symmetrical.
The utility model embodiment provides a kind of display device on the other hand, comprises array base palte as above.
The array base palte that the utility model embodiment provides and display device, array base palte comprises at least one array structure, this array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line, wherein, the first pixel cell and the 3rd pixel cell have symmetrical single domain vergence direction, and the second pixel cell has the multidomain vergence direction.A kind of like this array base palte of structure is when making alive, and the liquid crystal molecule arrangement that can have a down dip in the effect of electric field, its orientation make from all directions and watch all without phasic difference, thereby the quality of display device has been improved at the visual angle of having improved display device.
Description of drawings
Fig. 1 a is the structural representation of a kind of array base palte of one-domain structure liquid crystal display in prior art;
Fig. 1 b is the simulation schematic diagram of the contrast of observing from different perspectives of the one-domain structure liquid crystal display shown in Fig. 1 a;
Fig. 2 is the structural representation of the array base palte of a kind of pair of domain structure liquid crystal display in prior art;
The structural representation of a kind of array base palte that Fig. 3 provides for the utility model embodiment;
Fig. 4 is that the V-T curve of one-domain structure and two domain structure display device compares schematic diagram;
The structural representation of another array base palte that Fig. 5 provides for the utility model embodiment;
The colour cast situation simulation schematic diagram of a kind of array base palte under different angles that Fig. 6 provides for the utility model embodiment;
The structural representation of the another array base palte that Fig. 7 provides for the utility model embodiment;
The schematic flow sheet of a kind of manufacturing method of array base plate that Fig. 8 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The array base palte 30 that the utility model embodiment provides as shown in Figure 3, comprises at least one array structure 31.
This array structure 31 comprises the first pixel cell 321, the second pixel cell 322 and the 3rd pixel cell 323 of arranging line by line.
Wherein, the first pixel cell 321 and the 3rd pixel cell 323 have the single domain vergence direction, and the second pixel cell 322 has the multidomain vergence direction.
The farmland vergence direction of the first pixel cell 321 is different from the farmland vergence direction of the 3rd pixel cell 323.
The second pixel cell 322 is identical with the farmland vergence direction of the 3rd pixel cell 323 near the farmland vergence direction of the first pixel cell 321 1 sides, and its farmland vergence direction near the 3rd pixel cell 323 1 sides is identical with the farmland vergence direction of the first pixel cell 321.
In the utility model embodiment, the farmland vergence direction of array structure 31 inside can be symmetrical.As shown in Figure 3, the farmland vergence direction that the first pixel cell and the 3rd pixel cell have can be for symmetry, the multidomain vergence direction of the second pixel cell is along horizontal central line a rotational symmetry, and so, the farmland vergence direction integral body of array structure 31 inside is along horizontal central line a rotational symmetry.
The array base palte that the utility model embodiment provides, comprise at least one array structure, this array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line, wherein, the first pixel cell and the 3rd pixel cell have symmetrical single domain vergence direction, and the second pixel cell has the multidomain vergence direction.A kind of like this array base palte of structure is when making alive, and the liquid crystal molecule arrangement that can have a down dip in the effect of electric field, its orientation make from all directions and watch all without phasic difference, thereby the quality of display device has been improved at the visual angle of having improved display device.
Need to prove, the visual angle described in the utility model embodiment refers to that specifically contrast was greater than the viewing angle of 10 o'clock.Single domain or multidomain structure all refer to picture element array structure.Concrete, the single domain vergence direction refers to that liquid crystal molecule is according to the single direction oblique arrangement under "on" position, the multidomain vergence direction refers to that liquid crystal molecule is according to a plurality of different direction oblique arrangement under "on" position.As shown in Figure 3, in the array base palte that the utility model embodiment provides, be that the vergence direction with oblique line represents different farmland vergence directions.
In the utility model embodiment, be the explanation of adopting two domain structures to carry out as example take the second pixel cell, as shown in Figure 3, the liquid crystal molecule in the second pixel cell will be according to two different direction oblique arrangement under "on" position.Being appreciated that the second pixel cell adopts two domain structures just to illustrate, is not the restriction that the utility model is done, and the second pixel cell can adopt three farmlands or more domain structure to improve the visual angle of display device equally.For example, the second pixel cell can comprise three parts, upper and lower two parts can be one-domain structure, its farmland vergence direction near the first pixel cell one side is identical with the farmland vergence direction of the 3rd pixel cell, its farmland vergence direction near the 3rd pixel cell one side is identical with the farmland vergence direction of the first pixel cell, center section can be complete two domain structures, farmland vergence direction in this pair domain structure is different from the farmland vergence direction of two one-domain structures, adopts a kind of like this four domain structures can improve the visual angle of display device equally.
Take two domain structures as example, under "on" position, V-T (voltage-transmitance) curve of one-domain structure and two domain structures can be as shown in Figure 4, can be clear that, variation along with voltage, the transmitance change curve of one-domain structure and two domain structures is basically identical, and therefore a kind of like this array base palte of structure can not produce the inconsistent bad phenomenon of vision that the transmitance difference causes.On the other hand, the aperture opening ratio of one-domain structure and two domain structures should be identical, thereby avoided the vision difference that causes due to adjacent pixel unit structure difference and the generation of the phenomenon such as water ripples are bad, further improved the quality of product.
The array base palte that the utility model embodiment provides can be widely used in FFS (Fringe Field Switching, fringe field switching) type liquid crystal display or ADS (AD-SDS, Advanced-Super Dimensional Switching, senior super dimension field switch is referred to as ADS) the type liquid crystal display.Wherein, public electrode and the pixel electrode of ADS type liquid crystal display and FFS type liquid crystal display all can be arranged on array base palte.The FFS technology be mainly by in same plane between pixel electrode produce fringe field, make the aligned liquid-crystal molecule between electrode and directly over electrode rotate conversion at in-plane, thereby improve the light transmission efficiency of liquid crystal layer; The ADS technology is mainly that the longitudinal electric field that the parallel electric field that produces by pixel electrode edge in same plane and pixel electrode layer and public electrode interlayer produce forms multi-dimensional electric field, make in liquid crystal cell between pixel electrode, directly over electrode, all aligned liquid-crystal molecules can both produce the rotation conversion, thereby to have improved planar orientation be the liquid crystal work efficiency and increased light transmission efficiency.
Further, as shown in Figure 5, grid line 51 and data line 52 divisions that pixel cell 32 is intersected by transverse and longitudinal form.
Each pixel cell 32 comprises the first electrode 53 of pectination and the second planar electrode 54; Wherein, the first electrode 53 oblique arrangement are used for driving liquid crystal molecule 55 and produce the farmland vergence direction.
Further, in order to obtain the liquid crystal farmland vergence direction of each pixel cell in array structure as shown in Figure 3, the predetermined angle θ that can be tilted to the right of the first electrodes 53 in the first pixel cell 321 zone, the predetermined angle θ that can be tilted to the left of the first electrodes 53 in the 3rd pixel cell 323 zone, the first electrode 53 near the first pixel cell 321 1 sides in the second pixel cell 322 zone predetermined angle θ that is tilted to the left, the first electrode 53 near the 3rd pixel cell 323 1 sides in the second pixel cell 322 zones predetermined angle θ that is tilted to the right.
In the utility model embodiment, predetermined angle θ can select arbitrarily in 5 ° to 7 ° scopes.For example, when predetermined angle θ is 5 °, a kind of like this array base palte of structure is when making alive, orientation can be as shown in Figure 5 under the effect of electric field for liquid crystal, its orientation makes from all directions and watches all without phasic difference, thereby improved the visual angle of display device, improved the quality of display device.
Further, being positioned at the data line 52 of each pixel cell both sides can also be identical with the first electrode 53 angles of inclination of pixel cell.As shown in Figure 5, due to the predetermined angle θ that is tilted to the right of the first electrodes 53 in the first pixel cell 321 zone, the predetermined angle θ that is tilted to the left of the first electrodes 53 in the 3rd pixel cell 323 zone, the data line 52 that is positioned at the first pixel cell 321 and the 3rd pixel cell 323 regional both sides corresponding angle that can to the right or be tilted to the left equally.Due to the predetermined angle θ that is tilted to the left of the first electrode 53 near the first pixel cell 321 1 sides in the second pixel cell 322 zone, near the first electrode 53 of the 3rd pixel cell 323 1 sides predetermined angle θ that is tilted to the right, the data line 52 of the second pixel cell 322 regional both sides can be divided into continuous two parts accordingly, and two parts have different angles of inclination with two vergence directions of corresponding the first electrode 53 respectively.Because data line is all parallel in different zones from the first electrode, so, reduced the area occupied of data line, effectively improved the aperture opening ratio of display device.
In the utility model embodiment, the first electrode 53 can be pixel electrode, and the second electrode 54 can be public electrode; Perhaps the first electrode 53 can be public electrode, and the second electrode 54 can be pixel electrode.
Can simulate by the contrast that the array base palte that software provides the utility model embodiment is observed in the different visual angles situation, the contrast situation under the different directions visual angle that obtains specifically can see the following form 1:
| φ/° | θ＝0° | θ＝45° |
| 0 | 1040.27 | 95.90 |
| 45 | 1040.27 | 23.59 |
| 90 | 1040.27 | 877.96 |
| 135 | 1040.27 | 24.37 |
| 180 | 1040.27 | 106.73 |
| 225 | 1040.27 | 43.90 |
| 270 | 1040.27 | 949.33 |
| 315 | 1040.27 | 41.24 |
Table 1
Wherein, the viewing angle of liquid crystal display represents with spherical coordinate system, and φ is that the elevation angle, θ are the position angle, and θ=0 a ° expression is watched perpendicular to display surface, and θ=45 ° represent to watch from oblique 45° angle direction.Can find out from analog result, when the elevation angle was different value, the contrast at display forward or oblique visual angle had all reached the requirement of normally watching.
On the other hand, can simulate the colourity of array base palte in the different visual angles situation that the utility model embodiment provides by software.As shown in Figure 6, shown in each dotted line in Fig. 6, the zone is the colour cast situation of array base palte in a visual angle situation, can see, watch color shift amount all very little to display no matter be under which kind of angle, the array base palte that the utility model embodiment provides can also effectively reduce the colour cast of display device when improving the display device visual angle, further improved the quality of display device.
As shown in Figure 7, the utility model embodiment also provides a kind of array base palte.Wherein, the predetermined angle θ that is tilted to the left of the first electrodes 53 in the first pixel cell 321 zone, the described predetermined angle θ that is tilted to the right of the first electrodes 53 in the 3rd pixel cell 323 zone, the first electrode 53 near the first pixel cell 321 1 sides in the second pixel cell 322 zone predetermined angle θ that is tilted to the right, the first electrodes 53 near the 3rd pixel cell 323 1 sides in the second pixel cell zone 322 predetermined angle θ that is tilted to the left.
Similar with previous embodiment, predetermined angle θ can select arbitrarily in 5 ° to 7 ° scopes.The data line 52 that is positioned at each pixel cell both sides can also be identical with the first electrode 53 angles of inclination of pixel cell.The first electrode 53 can be pixel electrode, and the second electrode 54 can be public electrode; Perhaps the first electrode 53 can be public electrode, and the second electrode 54 can be pixel electrode.
A kind of like this array base palte of structure is compared the farmland vergence direction with previous embodiment fully opposite, when making alive, the same arrangement that can have a down dip in the effect of electric field of liquid crystal, its orientation makes from all directions and watches all without phasic difference, thereby improved the visual angle of display device, improved the quality of display device.
The utility model embodiment provides a kind of display device, and it comprises above-mentioned any array base palte, and this display device can be FFS type liquid crystal display or ADS type liquid crystal display.This display device is specifically as follows product or the parts that liquid crystal display, LCD TV, digital album (digital photo frame), mobile phone, panel computer etc. have any Presentation Function.
Wherein, the structure of array base palte has been done detailed description in the aforementioned embodiment, does not do herein and gives unnecessary details.
The display device that the utility model embodiment provides, comprise array base palte, this array base palte comprises at least one array structure, this array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line, wherein, the first pixel cell and the 3rd pixel cell have symmetrical single domain vergence direction, and the second pixel cell has the multidomain vergence direction.A kind of like this array base palte of structure is when making alive, and the liquid crystal molecule arrangement that can have a down dip in the effect of electric field, its orientation make from all directions and watch all without phasic difference, thereby the quality of display device has been improved at the visual angle of having improved display device.
The utility model embodiment also provides a kind of manufacturing method of array base plate, as shown in Figure 8, comprising:
S801, form at least one array structure on transparency carrier; Wherein, this array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line; Grid line and data line division that pixel cell is intersected by transverse and longitudinal form.
S802, the first electrode that forms pectination in pixel cell and the second planar electrode; The first electrode incline is arranged, and is used for driving liquid crystal molecule and produces the farmland vergence direction; Wherein, the first pixel cell and the 3rd pixel cell have the single domain vergence direction, and the second pixel cell has the multidomain vergence direction; The farmland vergence direction of the first pixel cell is different from the farmland vergence direction of the 3rd pixel cell; The second pixel cell is identical with the farmland vergence direction of the 3rd pixel cell near the farmland vergence direction of described the first pixel cell one side, and its farmland vergence direction near the 3rd pixel cell one side is identical with the farmland vergence direction of described the first pixel cell.
The manufacturing method of array base plate that the utility model embodiment provides, this array base palte comprises at least one array structure, this array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line, wherein, the first pixel cell and the 3rd pixel cell have symmetrical single domain vergence direction, and the second pixel cell has the multidomain vergence direction.A kind of like this array base palte of structure is when making alive, and the liquid crystal molecule arrangement that can have a down dip in the effect of electric field, its orientation make from all directions and watch all without phasic difference, thereby the quality of display device has been improved at the visual angle of having improved display device.
Further, the predetermined angle that is tilted to the right of the first electrode in the first pixel cell zone, the predetermined angle that is tilted to the left of the first electrode in the 3rd pixel cell zone, the first electrode near the first pixel cell one side in the second pixel cell zone predetermined angle that is tilted to the left, the first electrode of close the 3rd pixel cell one side in the second pixel cell zone predetermined angle that is tilted to the right.
Perhaps, the predetermined angle that is tilted to the left of the first electrode in the first pixel cell zone, the predetermined angle that is tilted to the right of the first electrode in the 3rd pixel cell zone, the first electrode near the first pixel cell one side in the second pixel cell zone predetermined angle that is tilted to the right, the first electrode of close the 3rd pixel cell one side in the second pixel cell zone predetermined angle that is tilted to the left.
Wherein, predetermined angle is in 5 ° to 7 ° scopes.
Further,, the data line that is positioned at each pixel cell both sides can be identical with the first electrode incline angle of pixel cell.All parallel in different zones from the first electrode in data line, so, reduced the area occupied of data line, effectively improved the aperture opening ratio of display device.
In the utility model embodiment, the first electrode can be pixel electrode, and the second electrode can be public electrode; Perhaps the first electrode can be public electrode, and the second electrode can be pixel electrode.The farmland vergence direction of described array structure inside is symmetrical.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (9)
1. an array base palte, comprise at least one array structure, it is characterized in that,
Described array structure comprises the first pixel cell, the second pixel cell and the 3rd pixel cell of arranging line by line;
Described the first pixel cell and described the 3rd pixel cell have the single domain vergence direction, and described the second pixel cell has the multidomain vergence direction;
The farmland vergence direction of described the first pixel cell is different from the farmland vergence direction of described the 3rd pixel cell;
Described the second pixel cell is identical with the farmland vergence direction of described the 3rd pixel cell near the farmland vergence direction of described the first pixel cell one side, and its farmland vergence direction near described the 3rd pixel cell one side is identical with the farmland vergence direction of described the first pixel cell.
2. array base palte according to claim 1, is characterized in that, grid line and data line division that described pixel cell is intersected by transverse and longitudinal form;
Each described pixel cell comprises the first electrode of pectination and the second planar electrode; Described the first electrode incline is arranged, and is used for driving liquid crystal molecule and produces the farmland vergence direction.
3. array base palte according to claim 2, is characterized in that, described the second pixel cell is two domain structures.
4. array base palte according to claim 3, is characterized in that,
Described the first electrode in described the first pixel cell zone predetermined angle that is tilted to the right, described the first electrode in described the 3rd pixel cell zone described predetermined angle that is tilted to the left, described first electrode of close described the first pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the left, described first electrode of close described the 3rd pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the right; Or,
Described the first electrode in described the first pixel cell zone predetermined angle that is tilted to the left, described the first electrode in described the 3rd pixel cell zone described predetermined angle that is tilted to the right, described first electrode of close described the first pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the right, described first electrode of close described the 3rd pixel cell one side in described the second pixel cell zone described predetermined angle that is tilted to the left.
5. array base palte according to claim 4, is characterized in that, described predetermined angle is in 5 ° to 7 ° scopes.
6. array base palte according to claim 4, is characterized in that, the described data line that is positioned at each described pixel cell both sides is identical with the described first electrode incline angle of described pixel cell.
7. according to claim 1-4 arbitrary described array base paltes, is characterized in that, described the first electrode is pixel electrode, and described the second electrode is public electrode; Or,
Described the first electrode is public electrode, and described the second electrode is pixel electrode.
8. array base palte according to claim 1, is characterized in that, the farmland vergence direction of described array structure inside is symmetrical.
9. a display device, is characterized in that, comprises described array base palte as arbitrary in claim 1 to 8.
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| CN 201320043275 CN203025452U (en) | 2013-01-25 | 2013-01-25 | Array substrate and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091919A (en) * | 2013-01-25 | 2013-05-08 | 北京京东方光电科技有限公司 | Array substrate, preparation method of array substrate and display device of array substrate |
| CN113485040A (en) * | 2021-07-20 | 2021-10-08 | 武汉华星光电技术有限公司 | Display panel and display device |
-
2013
- 2013-01-25 CN CN 201320043275 patent/CN203025452U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091919A (en) * | 2013-01-25 | 2013-05-08 | 北京京东方光电科技有限公司 | Array substrate, preparation method of array substrate and display device of array substrate |
| CN103091919B (en) * | 2013-01-25 | 2015-04-08 | 北京京东方光电科技有限公司 | Array substrate, preparation method of array substrate and display device of array substrate |
| CN113485040A (en) * | 2021-07-20 | 2021-10-08 | 武汉华星光电技术有限公司 | Display panel and display device |
| CN113485040B (en) * | 2021-07-20 | 2022-08-05 | 武汉华星光电技术有限公司 | Display panel and display device |
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