Semi-transmissive, semi-reflective display panel and method of manufacturing the same and display device

Patent metadata

Field	Value
Publication number	US-10409107-B2
Application number	US-201715705783-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	Jan 19, 2017
Publication date	Sep 10, 2019
Grant date	Sep 10, 2019

Abstract

There are disclosed a semi-transmissive, semi-reflective display panel, a method of manufacturing the same and a display device. The semi-transmissive, semi-reflective display panel includes a display substrate having a transmissive region and a reflective region, and an optical device. The optical device includes a first reflective portion and a second reflective portion; the first reflective portion is configured to reflect the light irradiating the reflective region of the display substrate from a backlight source to the second reflective portion; and the second reflective portion is configured to transmit the light irradiating the transmissive region of the display substrate from the backlight source and reflect the light reflected from the first reflective portion to the transmissive region of the display substrate.

First claim

The invention claimed is:

1. A semi-transmissive, semi-reflective display panel, comprising a display substrate having a transmissive region and a reflective region,
wherein the semi-transmissive, semi-reflective display panel further comprises an optical device including a first reflective portion and a second reflective portion;
wherein the first reflective portion is configured to reflect light irradiating the reflective region of the display substrate from a backlight source to the second reflective portion; and
the second reflective portion is configured to transmit therethrough light irradiating the transmissive region of the display substrate from the backlight source and reflect light reflected from the first reflective portion to the transmissive region of the display substrate.

2. The semi-transmissive, semi-reflective display panel according to claim 1 , wherein, the first reflective portion comprises a reflective film layer configured between the reflective region of the display substrate and the backlight source, and the second reflective portion comprises a one-way transmissive film layer configured between the transmissive region of the display substrate and the backlight source; wherein,
a reflective face of the one-way transmissive film layer faces towards the transmissive region of the display substrate and is opposite to a reflective face of the reflective film layer.

3. The semi-transmissive, semi-reflective display panel according to claim 2 , wherein, the optical device comprises:
a first light transmissive layer configured between the reflective film layer and the reflective region of the display substrate; and
a second light transmissive layer configured in a region surrounded by the one-way transmissive film layer, the transmissive region of the display substrate and the reflective film layer.

4. The semi-transmissive, semi-reflective display panel according to claim 3 , wherein, the optical device further comprises a third light transmissive layer configured on a transmissive light-incident face of the one-way transmissive film layer, a surface of the third light transmissive layer facing towards the backlight source being parallel to a major surface of the display substrate.

5. The semi-transmissive, semi-reflective display panel according to claim 4 , wherein, the first light transmissive layer, the second light transmissive layer and the third light transmissive layer are each a light transmissive resin layer.

6. The semi-transmissive, semi-reflective display panel according to claim 3 , wherein, the one-way transmissive film layer is configured to be parallel to the reflective film layer.

7. The semi-transmissive, semi-reflective display panel according to claim 2 , wherein, an included angle is formed between the reflective film layer and a surface of the reflective region of the display substrate facing towards the backlight source and is ranged from 30° to 60°.

8. The semi-transmissive, semi-reflective display panel according to claim 6 , wherein, an included angle is formed between the reflective film layer and a surface of the reflective region of the display substrate facing towards the backlight source and is ranged from 30° to 60°.

9. The semi-transmissive, semi-reflective display panel according to claim 1 , further comprising a base substrate and a thin film transistor array formed on a surface of the base substrate, an insulating layer on the thin film transistor array, and a transparent pixel electrodes on a surface of the insulating layer, wherein a part of the pixel electrode is covered by the reflective electrode such that a part of the pixel electrode that is not covered by the reflective electrode is formed as a pixel electrode transmissive region, the transmissive region is located between the pixel electrode transmissive region and the base substrate, the part of the pixel electrode that is covered by the reflective electrodes is a pixel electrode reflective region, and a region between the pixel electrode reflective region and the based substrate is the reflective region of the display substrate.

10. The semi-transmissive, semi-reflective display panel according to claim 1 , further comprising the backlight source, which includes a light source, a light guide plate and an optical film sheet.

11. A method of manufacturing the semi-transmissive, semi-reflective display panel according to claim 1 , wherein the method comprises steps of:
forming the first reflective portion on a side of the reflective region of the display substrate facing towards the backlight source, and forming the second reflective portion on a side of the transmissive region of the display substrate facing towards the backlight source, the first reflective portion and the second reflective portion together forming the optical device; wherein,
the reflective portion is configured to reflect the light irradiating the reflective region of the display substrate from the backlight source to the second reflective portion; and
the second reflective portion is configured to transmit therethrough the light irradiating the transmissive region of the display substrate from the backlight source and reflect the light reflected from the first reflective portion to the transmissive region of the display substrate.

12. The method according to claim 11 , wherein, the step of forming the first reflective portion comprises:
forming a reflective film layer on a surface of the reflective region of the display substrate facing towards the backlight source, thereby forming the first reflective portion; or
forming a first light transmissive layer on a surface of the reflective region of the display substrate facing towards the backlight source and manufacturing a reflective film layer on the first light transmissive layer, thereby forming the first reflective portion.

13. The method according to claim 12 , wherein, the step of forming the second reflective portion comprises:
forming a second light transmissive layer on a surface of the transmissive region of the display substrate facing towards the backlight source, the second light transmissive layer joining the reflective film layer, and forming an one-way transmissive film layer on the second light transmissive layer, thereby forming the second reflective portion, a reflective face of the one-way transmissive film layer being opposite to a reflective face of the reflective film layer; or
forming a second light transmissive layer on a surface of the reflective film layer, the second light transmissive layer covering a surface of the transmissive region of the display substrate facing towards the backlight source, and forming the one-way transmissive film layer on a portion of a surface of the second light transmissive layer corresponding to the transmissive region of the display substrate, thereby forming the second reflective portion, a reflective face of the one-way transmissive film layer being opposite to a reflective face of the reflective film layer.

14. The method according to claim 13 , wherein, the step of forming the second reflective portion further comprises:
forming a third light transmissive layer on a transmissive light-incident face of the one-way transmissive film layer, a surface of the third light transmissive layer facing towards the backlight source being parallel to a major surface of the display substrate.

15. The method according to claim 13 , wherein the one-way transmissive film layer is formed to be parallel to the reflective film layer.

16. The method according to claim 14 , wherein the one-way transmissive film layer

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Shi Bo
• Wu Xiaohui
• Zhang Junrui
• Jiang ni

Classifications

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F1/133555 Primary

  Transflectors · CPC title

• G02F1/133753

  with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title