DISPLAY DEVICE
A display device is provided. The display device includes a first substrate, a second substrate, a liquid-crystal layer, a first electrode, and an opposite electrode. The liquid-crystal layer is disposed between the first substrate and the second substrate. The first electrode is disposed on the first substrate. The opposite electrode is disposed on the side of the second substrate that faces the first substrate. The first electrode includes a first main portion and a plurality of first extending portions. The first extending portions are connected to the first main portion, at least one of the first extending portions includes a first side, a second side, and a curved structure. The curved structure connects the first side to the second side, and the curved structure has a first curvature radius greater than zero.
This application is a Continuation of pending U.S. patent application Ser. No. 15/272,833, filed Sep. 22, 2016 and entitled “display device”, which claims priority of China Patent Application No. 201510638234.3, filed on Sep. 30, 2015, the entirety of which is incorporated by reference herein.
BACKGROUND OF THE INVENTION Field of the InventionThe present disclosure relates to a display device, and in particular to a display device with a disclination line.
Description of the Related ArtConventional display device includes a first substrate, a second substrate, a liquid-crystal layer, and an electrode. The liquid-crystal layer is disposed between the first substrate and the second substrate. The electrode is disposed on the first substrate. Conventionally, the electrode includes a plurality of branches, and corners are formed on the ends of the branches. Finding a way to improve the light transmittance and the response time is an important issue of the display technology.
BRIEF SUMMARY OF THE INVENTIONIn one embodiment, a display device is provided. The display device includes a first substrate, a second substrate, a liquid-crystal layer, a first electrode, and an opposite electrode. The liquid-crystal layer is disposed between the first substrate and the second substrate. The first electrode is disposed on the first substrate. The opposite electrode is disposed on the side of the second substrate that faces the first substrate. The first electrode comprises a first main portion and a plurality of first extending portions. The first extending portions are connected to the first main portion, and at least one of the first extending portions comprises a first side, a second side, and a curved side. The curved side connects the first side and the second side, and the curved side has a first curvature radius greater than zero.
In another embodiment, a display device is provided. The display device includes a first substrate, a second substrate, a liquid-crystal layer, a first electrode, and an opposite electrode. The liquid-crystal layer is disposed between the first substrate and the second substrate. The first electrode is disposed on the first substrate. The opposite electrode is disposed on the side of the second substrate that faces the first substrate. The first electrode comprises a first main portion and a plurality of first extending portions. The first extending portions are connected to the first main portion, and at least one of the first extending portions comprises a first side, a second side, and a curved side. The curved side connects the first side and the second side. The first side connects the first main portion at a first end point. The second side connects the first main portion at a second end point. The curved side connects the first side at a third end point. The curved side connects the second side at a fourth end point. The area of the first extending portion is greater than the quadrilateral area enclosed by the first, second, third, and fourth end points.
In another embodiment, a display device is provided. The display device includes a first substrate, a second substrate, a liquid-crystal layer, a first sub-pixel area, and a second sub-pixel area. The liquid-crystal layer is disposed between the first substrate and the second substrate. A disclination line structure is between the first sub-pixel area and the second sub-pixel area, and the disclination line structure comprises a disclination line main portion and a plurality of top indentations. A virtual line segment is defined at a location where one of the top indentations connect to the disclination line main portion. The virtual line segment is parallel to the extending direction of the disclination line main portion. The one of the top indentation comprises a first disclination line side and a second disclination line side. The first disclination line side is relatively adjacent to the center of the disclination line main portion. The second disclination line side is relatively away from the center of the disclination line main portion. A first included angle between the first disclination line side and the virtual line segment is greater than a second included angle between the second disclination line side and the virtual line segment, and the first included angle and the second included angle are inside the top indentation.
Utilizing the curved side mentioned above, the arrangement of the liquid-crystal molecules is improved, and the light transmittance and the response time response time are improved. Additionally, utilizing the disclination line structure of the embodiment, the retention time is decreased, and the visual angle is made uniform.
A detailed description is given in the following embodiments with reference to the accompanying drawings.
The present disclosure can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
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In more detail, the display device further comprises a plurality of scan lines SL and a plurality of data lines DL. With reference to
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Utilizing the curved side mentioned above, the arrangement of the liquid-crystal molecules is improved, and the light transmittance and the response time are increased. When the first curvature radius is greater than zero and smaller than 10 μm, the light transmittance is increased under any driving voltage. In another embodiment, the first curvature radius could be smaller than 10 μm Additionally, the curved side of the embodiment is relatively retracted compared to the conventional structure. When the display device is recovered from being pressed (for example, by a finger) in a short period, the liquid-crystal molecules have greater space, and the liquid-crystal molecules return to their original positions rapidly, and the retention time is decreased. Similarly, the design of second round corner also improves retention time. However, when the first curvature radius is greater than 10 μm, the light transmittance may be decreased. Therefore, in another embodiment, the first curvature radius be greater than zero and smaller than or equal to 5 μm.
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Additionally, by modifying the distance between the first extending portion 120 and the second extending portion 220 and the data lines adjacent thereto, the width of one of the second disclination line areas 312 away from an end of the first disclination line area 311 perpendicular to an extending direction of the common electrode 40 is greater than the minimum width of the first disclination line area 311 perpendicular to the extending direction of the common electrode 40. By modifying the cell gap and the pre-tilt angle, the width of one of the second disclination line areas 312 away from an end of the first disclination line area 311 perpendicular to an extending direction of the common electrode 40 is greater than the minimum width of the first disclination line area 311 perpendicular to the extending direction of the common electrode 40. Particularly, the common electrode 40 between the first sub-pixel area R1 and the second sub-pixel area R2 is parallel to the scan lines. Therefore, the width of the second disclination line areas 312 away from an end of the first disclination line area 311 perpendicular to an extending direction of the scan line is greater than the minimum width of the first disclination line area 311 perpendicular to the extending direction of the scan line.
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The disclination line structure 300 decreases retention time. The top indentations 330 and the bottom indentations 340 can be defined by the binarization image of the disclination line. In one embodiment, the included angle θ1 of each of the top indentations 330 away from the center of the disclination line main portion is smaller than the included angle θ2 adjacent to the center of the disclination line main portion. In one embodiment, parts of the top indentations 330 are staggered with the corresponding bottom indentations 340. Additionally, the top indentations 330 away from the center of the disclination line main portion are staggered with the corresponding bottom indentations 340, and the visual angle is made uniform.
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The embodiment can also be utilized in a close-type indium tin oxide (ITO) electrode display device. In this embodiment, a common electrode, an insulation layer and a first electrode are sequentially disposed on the first substrate. An opposite electrode is disposed on the second substrate. With reference to
Use of ordinal terms such as “first”, “second”, “third”, etc., in the claims to modify a claim element does not by itself connote any priority, precedence, or order of one claim element over another or the temporal order in which acts of a method are performed, but are used merely as labels to distinguish one claim element having a certain name from another element having the same name (but for use of the ordinal term).
While the disclosure has been described by way of example and in terms of the preferred embodiments, it is to be understood that the disclosure is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims
1. A display device, comprising:
- a first substrate;
- a second substrate;
- a liquid-crystal layer, disposed between the first substrate and the second substrate;
- a data line, disposed on the first substrate;
- a first electrode, disposed on the first substrate,
- wherein the first electrode comprises a first main portion, a first peripheral portion and a plurality of first extending portions connected to the first main portion and the first peripheral portion;
- wherein at least a portion of the first peripheral portion is parallel to the data line and comprises at least one first curved side.
2. The display device as claimed in claim 1, wherein the first main portion is cross-shaped.
3. The display device as claimed in claim 1, further comprising a scan line disposed on the first substrate, wherein an extending direction of the scan line differs from an extending direction of the data line, and another portion of the first peripheral portion is parallel to the scan line.
4. The display device as claimed in claim 1, further comprising a second electrode, wherein the second electrode is separated from the first electrode, and the second electrode comprises a second main portion and a plurality of second extending portions.
5. The display device as claimed in claim 4, wherein the second electrode comprises a second peripheral portion, at least a portion of the second peripheral portion is parallel to the data line, and the second peripheral portion comprises at least one second curved side.
6. The display device as claimed in claim 5, further comprising a scan line, disposed on the first substrate, wherein an extending direction of the scan line differs from an extending direction of the data line, and another portion of the second peripheral portion is parallel to the scan line.
7. The display device as claimed in claim 4, wherein the second main portion is cross-shaped.
8. The display device as claimed in claim 4, wherein a part of the first extending portions and a part of the second extending portions are staggered.
9. The display device as claimed in claim 4, further comprising a scan line disposed on the first substrate and extending along a first direction, wherein the first direction differs from an extending direction of the data line, and a width of the first main portion in the first direction is greater than a width of at least one of the first extending portions in the first direction.
10. The display device as claimed in claim 9, wherein in the first direction, a width of at least one of the first extending portion adjacent to the first main portion is greater than a width of at least one of the first extending portion away from the first main portion.
11. A display panel, comprising:
- a first substrate;
- a second substrate;
- a liquid-crystal layer, disposed between the first substrate and the second substrate;
- a data line, disposed on the first substrate;
- a first electrode, disposed on the first substrate,
- wherein the first electrode comprises a first main portion, a first peripheral portion and a plurality of first extending portions connected to the first main portion and the first peripheral portion;
- wherein at least a portion of the first peripheral portion is parallel to the data line and comprises at least one first curved side.
12. The display panel as claimed in claim 11, wherein the first main portion is cross-shaped.
13. The display panel as claimed in claim 11, further comprising a scan line, disposed on the first substrate, wherein an extending direction of the scan line differs from an extending direction of the data line, and another portion of the first peripheral portion is parallel to the scan line.
14. The display panel as claimed in claim 11, further comprising a second electrode, wherein the second electrode is separated from the first electrode, and the second electrode comprises a second main portion and a plurality of second extending portions.
15. The display panel as claimed in claim 14, wherein the second electrode comprises a second peripheral portion, at least a portion of the second peripheral portion is parallel to the data line, and the second peripheral portion comprises at least one second curved side.
16. The display panel as claimed in claim 15, further comprising a scan line disposed on the first substrate, wherein an extending direction of the scan line differs from an extending direction of the data line, and another portion of the second peripheral portion is parallel to the scan line.
17. The display panel as claimed in claim 14, wherein the second main portion is cross-shaped.
18. The display panel as claimed in claim 14, wherein a part of the first extending portions and a part of the second extending portions are staggered.
19. The display panel as claimed in claim 14, further comprising a scan line disposed on the first substrate and extending along a first direction, wherein the first direction differs from an extending direction of the data line, and a width of the first main portion in the first direction is greater than a width of at least one of the first extending portions in the first direction.
20. The display panel as claimed in claim 19, wherein in the first direction, a width of at least one of the first extending portion adjacent to the first main portion is greater than a width of at least one of the first extending portion away from the first main portion.
Type: Application
Filed: Mar 13, 2019
Publication Date: Jul 11, 2019
Inventors: Tsung-Han TSAI (Miao-Li County), Chien-Hung CHEN (Miao-Li County), Mei-Chun SHIH (Miao-Li County)
Application Number: 16/351,758