Polarizer, display panel and display device

Patent metadata

Field	Value
Publication number	US-2020103574-A1
Application number	US-201916255818-A
Country	US
Kind code	A1
Filing date	Jan 24, 2019
Priority date	Sep 28, 2018
Publication date	Apr 2, 2020
Grant date	—

Abstract

A polarizer, a display panel and a display device including the polarizer are provided. The polarizer includes: a first polarizing layer, a first protective film and a first pressure-sensitive adhesive layer. The first polarizing layer includes a first hollow portion and a first polarizing portion surrounding the first hollow portion. The first protective film covers the first hollow portion and the first polarizing portion. The first pressure-sensitive adhesive layer is located at a side of the first polarizing layer facing away from the first protective film. With the display panel and the display device including the polarizer, since the first hollow portion is disposed in the first polarizing portion, an image collecting device such as a camera can be disposed in the polarizing region, thereby improving utilization of the surface area of the polarizer provided by the embodiments of the disclosure, and increasing the screen-to-body ratio.

First claim

What is claimed is:

1 . A polarizer, comprising:
a first polarizing layer comprising a first hollow portion and a first polarizing portion surrounding the first hollow portion; a first protective film covering the first hollow portion and the first polarizing portion; and a first pressure-sensitive adhesive layer located at a side of the first polarizing layer facing away from the first protective film.

2 . The polarizer according to claim 1 , wherein the polarizer comprises a quarter-wave plate located at a side of the first pressure-sensitive adhesive layer facing away from the first polarizing layer.

3 . The polarizer according to claim 2 , wherein the quarter-wave plate comprises a second hollow portion overlapping with the first hollow portion.

4 . The polarizer according to claim 3 , wherein the second hollow portion has an area smaller than or equal to an area of the first hollow portion.

5 . The polarizer according to claim 4 , wherein the second hollow portion is completely covered by the first hollow portion.

6 . The polarizer according to claim 2 , further comprising a second pressure-sensitive adhesive layer, wherein the second pressure-sensitive adhesive layer is located at a side of the quarter-wave plate facing away from the first polarizing layer.

7 . The polarizer according to claim 1 , further comprising a first alignment mark.

8 . A display panel, comprising:
a display substrate and a polarizer; wherein the display substrate comprises: a first underlay comprising a plurality of gate lines, a plurality of data lines, and a plurality of pixel units; and a second underlay disposed opposite to the first underlay, wherein the display substrate has a hollow region and a display region surrounding the hollow region, and none of the plurality of pixel units is arranged in the hollow region, wherein the polarizer comprises: a first polarizing layer comprising a first hollow portion and a first polarizing portion surrounding the first hollow portion; a first protective film covering the first hollow portion and the first polarizing portion; and a first pressure-sensitive adhesive layer located at a side of the first polarizing layer facing away from the first protective film, and wherein the first hollow portion overlaps with the hollow region.

9 . The display panel according to claim 8 , wherein the hollow region has an area smaller than or equal to an area of the first hollow portion.

10 . The display panel according to claim 9 , wherein the hollow region is completely covered by the first hollow portion.

11 . The display panel according to claim 8 , wherein the polarizer comprises a quarter-wave plate, and the quarter-wave plate is located at a side of the first pressure-sensitive adhesive layer facing away from the first polarizing layer.

12 . The display panel according to claim 11 , wherein the quarter-wave plate comprises a second hollow portion overlapping with the first hollow portion.

13 . The display panel according to claim 12 , wherein the second hollow portion has an area smaller than or equal to an area of the first hollow portion.

14 . The display panel according to claim 13 , wherein the second hollow portion is completely covered by the first hollow portion.

15 . The display panel according to claim 11 , wherein the polarizer further comprises a second pressure-sensitive adhesive layer located between the quarter-wave plate and the second underlay.

16 . The display panel according to claim 8 , wherein the polarizer further comprises a first alignment mark;
the display substrate further comprises a second alignment mark; and the first alignment marker and the second alignment marker are embedded into each other or are overlapped with each other.

17 . The display panel according to claim 8 , wherein the first underlay covers the hollow region, and the second underlay covers the hollow region.

18 . The display panel according to claim 8 , wherein the first underlay comprises a first opening portion located in the hollow region, and the second underlay comprises a second opening portion located in the hollow region.

19 . A display device, comprising:
a display panel, comprising: a display substrate and a polarizer; wherein the display substrate comprises: a first underlay comprising a plurality of gate lines, a plurality of data lines, and a plurality of pixel units; and a second underlay disposed opposite to the first underlay, wherein the display substrate has a hollow region and a display region surrounding the hollow region, and none of the plurality of pixel units is arranged in the hollow region, wherein the polarizer comprises: a first polarizing layer comprising a first hollow portion and a first polarizing portion surrounding the first hollow portion; a first protective film covering the first hollow portion and the first polarizing portion; and a first pressure-sensitive adhesive layer located at a side of the first polarizing layer facing away from the first protective film, and wherein the first hollow portion overlaps with the hollow region.

20 . The display device according to claim 19 , further comprising an image collecting device or a sounding device, wherein at least one of the image collecting device and the sounding device is located in the hollow region.

Assignees

• Wuhan Tianma Micro Electronics Co Ltd

Inventors

• Chen Xian
• Han Lijing

Classifications

• C09J7/38

  Pressure-sensitive adhesives [PSA] · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02B5/3033 Primary

  in the form of a thin sheet or foil, e.g. Polaroid · CPC title

• G02F1/133528 Primary

  Polarisers · CPC title

• G02B5/3083

  Birefringent or phase retarding elements (G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001) · CPC title