Electro-wetting display panel and electro-wetting display apparatus

Patent metadata

Field	Value
Publication number	US-2016259160-A1
Application number	US-201414408750-A
Country	US
Kind code	A1
Filing date	Oct 28, 2014
Priority date	Oct 22, 2014
Publication date	Sep 8, 2016
Grant date	—

Abstract

An electro-wetting display panel is provided. The electro-wetting display panel comprises a first transparent substrate, a second transparent substrate, and pixel units. The pixel units comprise first electrodes, a first hydrophobic layer, a plurality of first barriers, a second electrode, a polarized liquid and a plurality of first non-polarized liquids. The hysteresis phenomenon of the non-polarized liquids can be prevented by using the recess areas on the hydrophobic layer.

First claim

1 . An electro-wetting display panel, comprising:
a first transparent substrate; a second transparent substrate disposed opposite to the first transparent substrate; and a plurality of pixel units comprising:
a plurality of first electrodes disposed in pixel areas of the first transparent substrate;
a first hydrophobic layer disposed on the first electrodes;
a plurality of first barriers disposed on the first hydrophobic layer and around the pixel areas of the first transparent substrate;
a plurality of second electrodes disposed on the second transparent substrate;
a second hydrophobic layer disposed on the second electrodes;
a polarized liquid disposed between the second hydrophobic layer and the first hydrophobic layer;
a plurality of first non-polarized liquids disposed on the first hydrophobic layer and close to the first barriers, respectively;
a plurality of second barriers disposed on the second hydrophobic layer and around the pixel areas of the second transparent substrate; and
a plurality of second non-polarized liquids disposed on the second hydrophobic layer and close to the second barriers, respectively;
wherein a plurality of first recess areas are formed on the first hydrophobic layer and close to the corresponding first barriers for receiving portions of the first non-polarized liquids, and a plurality of projection portions are formed on the second electrodes and far away the first barriers.

2 . The electro-wetting display panel according to claim 1 , wherein a plurality of second recess areas are formed on the second hydrophobic layer, and close to the corresponding second barriers for receiving portions of the second non-polarized liquids.

3 . The electro-wetting display panel according to claim 1 , wherein the pixel units comprise the second hydrophobic layer smoothly disposed on the second electrodes; the plurality of second barriers disposed on the second hydrophobic layer and around the pixel areas of the second transparent substrate; the plurality of second non-polarized liquids disposed on the second hydrophobic layer and close to the second barriers, respectively, wherein the polarized liquid is disposed between the second hydrophobic layer and the first hydrophobic layer.

4 . The electro-wetting display panel according to claim 3 , wherein a plurality of second recess areas are formed on the second hydrophobic layer, and close to the corresponding second barriers for receiving portions of the second non-polarized liquids.

5 . An electro-wetting display panel, comprising:
a first transparent substrate; a second transparent substrate disposed opposite to the first transparent substrate; and a plurality of pixel units comprising:
a plurality of first electrodes disposed in pixel areas of the first transparent substrate;
a first hydrophobic layer disposed on the first electrodes;
a plurality of first barriers disposed on the first hydrophobic layer and around the pixel areas of the first transparent substrate;
at least one second electrode disposed on the second transparent substrate;
a second hydrophobic layer disposed on the at least one second electrode;
a polarized liquid disposed between the at least one second electrode and the first hydrophobic layer; and
a plurality of first non-polarized liquids disposed on the first hydrophobic layer and close to the first barriers, respectively;
wherein a plurality of first recess areas are formed on the first hydrophobic layer and close to the corresponding first barriers for receiving portions of the first non-polarized liquids.

6 . The electro-wetting display panel according to claim 5 , wherein the pixel units further comprise the second hydrophobic layer disposed on the plurality of second electrodes; a plurality of second barriers disposed on the second hydrophobic layer and around the pixel areas of the second transparent substrate; a plurality of second non-polarized liquids disposed on the second hydrophobic layer and close to the second barriers, respectively, wherein the polarized liquid is disposed between the second hydrophobic layer and the first hydrophobic layer.

7 . The electro-wetting display panel according to claim 6 , wherein a plurality of second recess areas are formed on the second hydrophobic layer, and close to the corresponding second barriers for receiving portions of the second non-polarized liquids.

8 . The electro-wetting display panel according to claim 5 , wherein a plurality of projection portions are formed on the second electrodes and far away the first barriers.

9 . The electro-wetting display panel according to claim 8 , wherein the pixel units further comprise the second hydrophobic layer smoothly disposed on the plurality of second electrodes; a plurality of second barriers disposed on the second hydrophobic layer and around the pixel areas of the second transparent substrate; a plurality of second non-polarized liquids disposed on the second hydrophobic layer and close to the second barriers, respectively, wherein the polarized liquid is disposed between the second hydrophobic layer and the first hydrophobic layer.

10 . The electro-wetting display panel according to claim 9 , wherein a plurality of second recess areas are formed on the second hydrophobic layer, and close to the corresponding second barriers for receiving portions of the second non-polarized liquids.

11 . An electro-wetting display apparatus, comprising:
a light source module configured to emit light rays; and an electro-wetting display pane comprising:
a first transparent substrate;
a second transparent substrate disposed opposite to the first transparent substrate; and
a plurality of pixel units comprising:
a plurality of first electrodes disposed in pixel areas of the first transparent substrate;
a first hydrophobic layer disposed on the first electrodes;
a plurality of first barriers disposed on the first hydrophobic layer and around the pixel areas of the first transparent substrate;
at least one second electrode disposed on the second transparent substrate;
a second hydrophobic layer disposed on the at least one second electrode;
a polarized liquid disposed between the at least one second electrode and the first hydrophobic layer; and
a plurality of first non-polarized liquids disposed on the first hydrophobic layer and close to the first barriers, respectively;
wherein a plurality of first recess areas are formed on the first hydrophobic layer and close to the corresponding first barriers for receiving portions of the first non-polarized liquids.

12 . The electro-wetting display apparatus according to claim 11 , wherein the pixel units further comprise the second hydrophobic layer disposed on the plurality of second electrodes; a plurality of second barriers disposed on the second hydrophobic layer and around the pixel areas of the second transparent substrate; a plurality of second non-polarized liquids disposed on the second hydrophobic layer and close to the second barriers, respectively, wherein the polarized liquid is disposed between the second hydrophobic layer and the first hydrophobic layer.

13 . The electro-wetting display apparatus according to claim 12 , wherein a plurality of second recess areas are formed on the second hydrophobic layer, and close to the corresponding second barriers for receiving portions of the second non-polarized liquids.

14 . The electro-wetting display apparatus according to claim 11 , a plurality of projection portions are formed on the second electrodes and far away the first barriers.

15 . The electro-wetting display apparatus according

Assignees

• Shenzhen China Star Optoelect

Inventors

• Hsiao Yu-Chun
• Chen Shih Hsiang
• Tang Guofu
• Li Quan
• Lv Chengling
• Guo Chaofan

Classifications

• G02B26/02

  for controlling the intensity of light {(G02B26/004 takes precedence)} · CPC title

• G02B26/005 Primary

  based on electrowetting · CPC title