Transflective liquid crystal display panel and transflective liquid crystal display device

Patent metadata

Field	Value
Publication number	US-9983434-B2
Application number	US-201514778139-A
Country	US
Kind code	B2
Filing date	Apr 23, 2015
Priority date	Apr 8, 2015
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

Disclosed is a transflective liquid crystal display panel and transflective liquid crystal display device. The transflective liquid crystal display panel includes: an array substrate which is provided thereon with a plurality of sub-pixel areas, each of the sub-pixel areas including a transmissive area and a reflecting area; and a polarizer arranged at an outer surface of the array substrate and having a first surface facing a backlight source. An area of the first surface, which corresponds to the reflecting area, is at least partly provided therein with a reflecting layer. The present disclosure achieves the technical effect of preventing the light emitted by a backlight source from being absorbed by the polarizer in the reflecting process, thus avoiding light loss and consequently improving the utilization rate of the backlight source. The display panel and the display device provided by the present disclosure are simple in structures, which greatly reduces the production cost thereof.

First claim

The invention claimed is:

1. A transflective liquid crystal display panel, comprising:
an array substrate which is provided thereon with a plurality of sub-pixel areas, each of the sub-pixel areas comprising a transmissive area and a reflecting area, and
a polarizer arranged at an outer surface of the array substrate and having a first surface facing a backlight source,
wherein an area of the first surface, which corresponds to the reflecting area, is at least partly provided therein with a reflecting layer,
wherein the reflecting layer has a thickness configured to increase gradually along a direction from an end thereof close to the transmissive area to the reflecting area, and
wherein the reflecting layer comprises a transparent film layer arranged on the polarizer, and a metal layer coated on the transparent film layer, the transparent film layer arranged between the polarizer and the metal layer.

2. The transflective liquid crystal display panel according to claim 1 , wherein the surface of the metal layer is configured to be a smooth or rough surface.

3. The transflective liquid crystal display panel according to claim 1 , wherein the polarizer is completely covered by the transparent film layer, and the metal layer is at least partly coated on a region of the transparent film layer corresponding to the reflecting area.

4. The transflective liquid crystal display panel according to claim 1 , wherein the transparent film layer is made of a transparent plastic.

5. The transflective liquid crystal display panel according to claim 1 , wherein the transmissive area and the reflecting area contain a same positive dielectric anisotropy liquid crystal material.

6. A transflective liquid crystal display device, comprising a transflective liquid crystal display panel which comprises:
an array substrate which is provided thereon with a plurality of sub-pixel areas, each of the sub-pixel areas comprising a transmissive area and a reflecting area, and
a polarizer arranged at an outer surface of the array substrate and having a first surface facing a backlight source,
wherein an area of the first surface, which corresponds to the reflecting area, is at least partly provided therein with a reflecting layer,
wherein the reflecting layer has a thickness configured to increase gradually along a direction from an end thereof close to the transmissive area to the reflecting area, and
wherein the reflecting layer comprises a transparent film layer arranged on the polarizer, and a metal layer coated on the transparent film layer, the transparent film layer arranged between the polarizer and the metal layer.

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Xie Chang

Classifications

• G02F1/133555 Primary

  Transflectors · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02F1/133567

  on the back side · CPC title

• G02F2203/09

  transflective · CPC title

• G02F1/133605

  including specially adapted reflectors · CPC title