Active-matrix organic light-emitting diode (amoled) display panel, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-2016254483-A1
Application number	US-201414761392-A
Country	US
Kind code	A1
Filing date	Nov 28, 2014
Priority date	Jul 2, 2014
Publication date	Sep 1, 2016
Grant date	—

Abstract

An active-matrix organic light-emitting diode (AMOLED) display panel, which includes an array substrate ( 1 ) and a color filter (CF) substrate ( 2 ) which are cell-assembled, is disclosed. The CF substrate ( 2 ) includes an anti-reflecting layer ( 21 ), a water blocking layer ( 24 ) and a CF layer ( 22 ) and a black matrix (BM) ( 23 ) arranged on the same layer. The anti-reflecting layer ( 21 ) is disposed on a side of the CF layer ( 22 ) and the BM ( 23 ) facing away from the array substrate ( 1 ). The water blocking layer ( 24 ) is disposed on a side of the CF layer ( 22 ) and the BM ( 23 ) close to the array substrate ( 1 ), or the water blocking layer ( 24 ) is disposed between the anti-reflecting layer ( 21 ) and the CF layer ( 22 ) and the BM ( 23 ). The AMOLED display panel can prevent water from entering the AMOLED display panel and is lighter and thinner.

First claim

1 . An active-matrix organic light-emitting diode (AMOLED) display panel, comprising an array substrate and a color filter (CF) substrate bonded with each other, wherein
the CF substrate includes an anti-reflecting layer, a water blocking layer, a CF layer and a black matrix (BM), wherein the CF layer and the BM are arranged on a same layer; the anti-reflecting layer is disposed on a side of the CF layer and the BM facing away from the array substrate; and the water blocking layer is disposed on a side of the CF layer and the BM close to the array substrate, or the water blocking layer is disposed between the anti-reflecting layer and the CF layer and the BM.

2 . The AMOLED display panel according to claim 1 , wherein the water blocking layer has a thickness of from 0.1 to 10 μm.

3 . The AMOLED display panel according to claim 1 , wherein the water blocking layer is a single layer or a plurality of mutually superimposed layers.

4 . The AMOLED display panel according to claim 3 , wherein the single layer is made from inorganic materials; the plurality of layers include a layer made from inorganic materials and a layer made from organic materials;
the inorganic materials comprise any one selected from a group consisting of silicon nitride and silicon oxide; and the organic materials comprise any one selected from a group consisting of poly epoxy resin and polyacrylic acid.

5 . The AMOLED display panel according to claim 1 , wherein the anti-reflecting layer includes a ¼ wave plate, an adhesive and a linear polarizer superimposed to each other in sequence; and the linear polarizer is farther from the array substrate than the ¼ wave plate.

6 . The AMOLED display panel according to claim 5 , wherein the ¼ wave plate is made from cyclo-olefin polymer (COP) optical materials; and the adhesive is made from polyacrylic acid materials.

7 . The AMOLED display panel according to claim 1 , wherein the CF layer is an RGB three-color CF layer or an RGBW four-color CF layer.

8 . The AMOLED display panel according to claim 1 , wherein a bonding adhesive is disposed between the array substrate and the CF substrate and allows the array substrate and the CF substrate to be laminated corresponding to each other and bonded together.

9 . The AMOLED display panel according to claim 1 , wherein the array substrate includes a lower substrate, and a lower electrode, an electroluminescent layer, an upper electrode and a thin film encapsulation layer disposed on the lower substrate in sequence.

10 . The AMOLED display panel according to claim 9 , wherein the thin film encapsulation layer is a single layer or a plurality of mutually superimposed layers and made from same materials with the water blocking layer; and the bonding adhesive is made from epoxy resin materials.

11 . The AMOLED display panel according to claim 8 , wherein the bonding adhesive is disposed at areas corresponding to peripheral edge areas of the array substrate and the CF substrate, or the bonding adhesive is distributed on the entire surface where the array substrate and the CF substrate face to each other.

12 . The AMOLED display panel according to claim 9 , wherein the lower substrate is made from glass or plastic materials; and the plastic material is polyimide.

13 . A display device, comprising the AMOLED display panel according to claim 1 .

14 . A method for manufacturing the AMOLED display panel according to claim 1 , comprising: forming an array substrate; forming a CF substrate; and bonding the array substrate and the CF substrate, wherein the step of forming the CF substrate includes a step of forming a water blocking layer.

15 . The manufacturing method according to claim 14 , wherein the step of forming the CF substrate and the step of bonding the array substrate and the CF substrate include:
S1: forming a ¼ wave plate on carrier glass; S2: forming a pattern of a CF layer and a pattern of a black matrix (BM) in sequence on the carrier glass obtained in step S1 by a patterning process; S3: forming a water blocking layer on the carrier glass obtained in step S2; S4: coating or laminating a bonding adhesive on the carrier glass obtained in step S3, and laminating the array substrate and the carrier glass obtained in step S3 corresponding to each other; S5: removing the carrier glass; and S6: coating an adhesive on a linear polarizer, and laminating the linear polarizer to the ¼ wave plate.

16 . The manufacturing method according to claim 14 , wherein the step of forming the CF substrate and the step of bonding the array substrate and the CF substrate include:
S1: forming a ¼ wave plate on carrier glass; S2: forming a water blocking layer on the carrier glass obtained in step S1; S3: forming a pattern of a CF layer and a pattern of a BM in sequence on the carrier glass obtained in step S2 by a patterning process; S4: coating or laminating a bonding adhesive on the carrier glass obtained in step S3, and laminating the array substrate and the carrier glass obtained in step S3 corresponding to each other; S5: removing the carrier glass; and S6: coating an adhesive on a linear polarizer, and laminating the linear polarizer to the ¼ wave plate.

17 . The manufacturing method according to claim 14 , wherein the water blocking layer is formed by physical vapor deposition (PVD) or chemical vapor deposition (CVD).

18 . The AMOLED display panel according to claim 2 , wherein the water blocking layer is a single layer or a plurality of mutually superimposed layers.

19 . The AMOLED display panel according to claim 2 , wherein the anti-reflecting layer includes a ¼ wave plate, an adhesive and a linear polarizer superimposed to each other in sequence; and the linear polarizer is farther from the array substrate than the ¼ wave plate.

20 . The AMOLED display panel according to claim 9 , wherein the bonding adhesive is disposed at areas corresponding to peripheral edge areas of the array substrate and the CF substrate, or the bonding adhesive is distributed on the entire surface where the array substrate and the CF substrate face to each other.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Chun Jan

Classifications

• H10K59/8793

  Arrangements for polarized light emission (H10K59/8791 takes precedence) · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K50/8426

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title