Display substrate, fabrication method and display apparatus

Patent metadata

Field	Value
Publication number	US-2016356928-A1
Application number	US-201515032259-A
Country	US
Kind code	A1
Filing date	Sep 18, 2015
Priority date	Feb 12, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

The present disclosure provides a display substrate. The display substrate includes a substrate having a display area and a border area surrounding the display area; a non-black photo-resist layer formed on the substrate in the border area; and a black photo-resist layer formed on the non-black photo-resist layer. The non-black photo-resist layer interfaces the black photo-resist layer with a diffusion structure.

First claim

1 - 20 . (canceled)

21 . A display substrate, comprising:
a substrate having a display area and a border area surrounding the display area; a non-black photo-resist layer formed on the substrate in the border area; a black photo-resist layer formed over the non-black photo-resist layer; and the non-black photo-resist layer interfacing the black photo-resist layer with a diffusion structure.

22 . The display substrate of claim 21 , wherein:
the diffusion structure includes a plurality of protrusion structures formed on a surface of the non-black photo-resist layer facing the black photo-resist layer.

23 . The display substrate of claim 22 , wherein:
the diffusion structure is formed in the surface of the non-black photo-resist layer to be an integrated structure of the non-black photo-resist layer.

24 . The display substrate of claim 22 , wherein:
the diffusion structure and the non-black photo-resist layer are two layers of independent structures.

25 . The display substrate of claims 22 , wherein the protrusion structures have nanoscale protrusion patterns.

26 . The display substrate of claim 25 , wherein the protrusion structures are irregular patterns.

27 . The display substrate of claim 25 , wherein the protrusion structures are regular patterns of a plurality of parallel triangular stripes.

28 . The display substrate of claim 21 , wherein:
the diffusion structure includes a plurality of reflective particles formed on a surface of the non-black photo-resist layer facing the black photo-resist layer by spray-coating or spin-coating.

29 . The display substrate of claim 28 , wherein:
the diffusion layer includes at least light-transmissive adhesive, stabilizer, and reflective particles; and the reflective particles are made of one or more materials of titanium oxide, aluminum oxide, halogen-containing phosphate, calcium pyrophosphate, and strontium pyrophosphate, and having a size in a range of approximately 100 nm˜200 nm.

30 . The display substrate of any one of claims 21 , wherein:
the display substrate is a one glass solution substrate; the one glass solution substrate also includes an electrode layer; and the electrode layer is formed in the display area of the substrate and extended onto the black photo-resist layer in the border area of the substrate.

31 . The display substrate of claim 21 , wherein the diffusion structure has a thickness of approximately 0.3 μm to 0.7 μm.

32 . The display substrate of claim 21 , wherein the non-black photo-resist layer has a thickness of approximately 10 μm to 13 μm.

33 . The display substrate of claim 32 , wherein the non-black photo-resist layer has a thickness of approximately 10 μm to 12 μm.

34 . The display substrate of claim 30 , wherein the display substrate also includes a protective layer formed on the electrode layer.

35 . A display apparatus, comprising a disclosed display substrate of claim 34 .

36 . A method of fabricating the display substrate, comprising:
providing a substrate having a display area and a border area surrounding the display area; and forming a non-black photo-resist layer and a black photo-resist layer in the border area of the substrate, wherein a diffusion structure is formed on an interface between the non-black photo-resist layer and the black photo-resist layer.

37 . The method of claim 36 , wherein forming the non-black photo-resist layer and the black photo-resist layer further including:
forming the non-black photo-resist layer in the border area of the substrate; forming a diffusion structure on the non-black photo-resist layer; and forming a black photo-resist layer on the diffusion structure.

38 . The method of claim 36 , wherein the diffusion structure is formed in a surface of the non-black photo-resist layer facing the black photo-resist layer or in a surface of the black photo-resist layer facing the non-black photo-resist layer by using a Nanoimprint lithographic method or a laser interference lithographic method.

39 . The method of claim 36 , wherein the diffusion structure includes a plurality of reflective particles formed on a surface of the non-black photo-resist layer facing the black photo-resist layer by spray-coating or spin-coating.

40 . The method of claims 36 , further including:
forming an electrode layer on the substrate, wherein the electrode layer is formed in the display area of the substrate and is extended onto the black photo-resist layer in the border area of the substrate; and forming a protective layer on the electrode layer.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Wusheng
• Kim Ki Man

Classifications

• B05D1/005

  Spin coating · CPC title

• G02B5/0226

  having particles on the surface · CPC title

• G02B5/021 Primary

  the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02B1/14

  Protective coatings, e.g. hard coatings · CPC title