Array substrate and method of manufacturing the same, display panel and display device

Patent metadata

Field	Value
Publication number	US-2021223638-A1
Application number	US-201816098811-A
Country	US
Kind code	A1
Filing date	Jan 17, 2018
Priority date	Jul 25, 2017
Publication date	Jul 22, 2021
Grant date	—

Abstract

An array substrate and a manufacturing method thereof, a display panel and a display device are provided. The array substrate includes a plurality of pixel units, at least some of which respectively having a reflective region provided with a reflective layer in a concave-convex shape, wherein a first insulating layer is disposed on a light reflecting side of the reflective layer, and a surface of the first insulating layer adjacent to the reflective layer is in a concave-convex shape conforming to the concave-convex shape of the reflective layer, and a surface of the first insulating layer away from the reflective layer is a planar surface; the at least some of the pixel units further respectively comprise a first electrode and a second electrode which are oppositely disposed in different layers and are spaced apart from each other, and the first electrode is disposed on a side of the first insulating layer away from the reflective layer.

First claim

1 . An array substrate, comprising a plurality of pixel units, at least some of which respectively having a reflective region provided with a reflective layer in a concave-convex shape, wherein
a first insulating layer is disposed on a light reflecting side of the reflective layer, and a surface of the first insulating layer adjacent to the reflective layer is in a concave-convex shape conforming to the concave-convex shape of the reflective layer, and a surface of the first insulating layer away from the reflective layer is a planar surface; the at least some of the pixel units further respectively comprise a first electrode and a second electrode which are oppositely disposed in different layers and are spaced apart from each other, and the first electrode is disposed on a side of the first insulating layer away from the reflective layer.

2 . The array substrate of claim 1 , wherein the first electrode is a comb electrode and the second electrode is a plate electrode.

3 . The array substrate of claim 2 , further comprising a second insulating layer disposed on a side of the reflective layer away from the first insulating layer, the surface of the second insulating layer adjacent to the reflective layer is in a concave-convex shape conforming to the concave-convex shape of the reflective layer.

4 . The array substrate of claim 3 , wherein the second electrode is disposed on a side of the reflective layer away from the first insulating layer.

5 . The array substrate of claim 4 , wherein the second electrode is disposed between the reflective layer and the second insulating layer, and the second electrode is in a concave-convex shape conforming to the concave-convex shape of the reflective layer.

6 . The array substrate of claim 4 , wherein
the second electrode is disposed on a side of the second insulating layer away from the reflective layer.

7 . The array substrate of claim 3 , wherein the second electrode is disposed on a side of the reflective layer away from the second insulating layer and is a transparent electrode.

8 . The array substrate of claim 7 , wherein the second electrode is disposed between the reflective layer and the first insulating layer, and the second electrode is in a concave-convex shape conforming to the concave-convex shape of the reflective layer.

9 . The array substrate of claim 7 , wherein
the second electrode is disposed between the first electrode and the first insulating layer, a third insulating layer is disposed between the second electrode and the first electrode, and the second electrode extends in a plane parallel to a planar surface of the first insulating layer.

10 . The array substrate of claim 4 , wherein the second electrode is formed integrally with the reflective layer.

11 . The array substrate of claim 1 , wherein one of the first electrode and the second electrode is a pixel electrode, and the other of the first electrode and the second electrode is a common electrode.

12 . The array substrate of claim 1 , wherein the at least some of the pixel units further respectively comprise a transmissive region, the transmissive region not including the reflective layer.

13 . The array substrate of claim 1 , wherein each of the pixel units comprises a reflective region.

14 . A method of manufacturing an array substrate, the array substrate comprising a plurality of pixel units, at least some of which respectively having a reflective region, the method comprising at least:
forming a reflective layer in a concave-convex shape in the reflective region; forming a first insulating layer on a light reflecting side of the reflective layer; performing a planarization process a surface of the first insulating layer away from the reflective layer to form a planar surface; and forming a first electrode on a side of the first insulating layer away from the reflective layer, the first electrode extending on the planar surface of the first insulating layer.

15 . The method of claim 14 , further comprising:
forming a second insulating layer before forming the reflective layer; patterning the second insulating layer such that a surface of the second insulating layer adjacent to a subsequently formed reflective layer is in a concave-convex shape; forming the reflective layer on a side of the second insulating layer in a concave-convex shape such that the reflective layer is also in a concave-convex shape.

16 . The method of claim 14 , wherein the planarization process is chemical mechanical grinding.

17 . The method of claim 15 , further comprising disposing the second electrode on a side of the reflective layer away from the first insulating layer, or configuring the second electrode as a transparent electrode and disposing the second electrode on a side of the reflective layer away from the second insulating layer.

18 . A display panel comprising:
the array substrate of claim 1 .

19 . A display device comprising the display panel of claim 18 .

20 . The method of claim 14 , wherein a depth of the planarization process to the surface of the first insulating layer away from the reflective layer is less than a thickness of the first insulating layer.

Assignees

• Boe Technology Group Co Ltd
• Hefei Boe Optoelectronics Tech

Inventors

• Gong Kui
• Duan Xianxue
• Xu Dezhi

Classifications

• G02F1/134372

  for fringe field switching [FFS] where the common electrode is not patterned · CPC title

• G02F1/133555

  Transflectors · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/133553 Primary

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title