Display panel, method for manufacturing the same, and display device comprising the same

Patent metadata

Field	Value
Publication number	US-9360730-B2
Application number	US-201314360472-A
Country	US
Kind code	B2
Filing date	Dec 16, 2013
Priority date	Jun 26, 2013
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A display panel, a method for manufacturing the display panel and a display device are provided. The display panel comprises a first transparent substrate ( 1 ) and a second transparent substrate ( 2 ) disposed opposite to the first transparent ( 1 ), the display panel further comprises a black matrix ( 3 ) disposed between the first transparent substrate ( 1 ) and the second transparent substrate ( 2 ), wherein the black matrix ( 3 ) together with the first transparent substrate ( 1 ) and the second transparent substrate ( 2 ) forms a plurality of pixel spaces separated from each other, electrochromatic material ( 4 ) disposed in each of the pixel spaces, and the display panel further comprises a first electrode and a second electrode, the plurality of pixel spaces being disposed between the first electrode and the second electrode. The method for manufacturing the display panel and the display device utilize the electrochromatic material instead of liquid crystals, thus having various advantages, such as a simple structure, simple manufacturing processes, low cost, good economic effect, good display effect and etc.

First claim

The invention claimed is:

1. A display panel comprising:
a first transparent substrate;
a second transparent substrate facing to the first transparent substrate;
a black matrix disposed between the first transparent substrate and the second transparent substrate, wherein the black matrix together with the first and second transparent substrates form a plurality of pixel spaces separated from each other;
electrochromatic material disposed in each of the plurality of pixel spaces;
a first electrode and a second electrode, wherein the plurality of pixel spaces are disposed between the first and the second electrodes; and
wherein patterns of color filters are disposed on the first transparent substrate or the second transparent substrate;
the patterns of the color filters correspond to openings of the black matrix; and
the colors of the color filters correspond to colors of the electrochromatic materials filled in the openings of the black matrix after a voltage is applied to the display panel.

2. The display panel according to claim 1 , wherein the first electrode is disposed on a position of the first transparent substrate corresponding to each of the pixel spaces;
the second electrode is disposed on a position of the second transparent substrate corresponding to each of the pixel spaces; and
transmissivity of the electrochromatic material is changed by changing a voltage difference between the corresponding first electrode and the corresponding second electrode.

3. The display panel according to claim 2 , wherein the first electrode is disposed on a side of the first transparent substrate facing to the second transparent substrate, and the second electrode is disposed on a side of the second transparent substrate facing to the first transparent substrate.

4. The display panel according to claim 3 , wherein
patterns of color filters are disposed on the first transparent substrate or the second transparent substrate;
the patterns of the color filters correspond to openings of the black matrix; and
the colors of the color filters correspond to colors of the electrochromatic materials filled in the openings after a voltage is applied to the display panel.

5. The display panel according to claim 1 , wherein
the first electrode is a common electrode and covers a display region of the first transparent substrate; and
the second electrode is disposed on a position of the second transparent substrate corresponding to each of the pixel spaces.

6. The display panel according to claim 5 , wherein the first electrode is disposed on a side of the first transparent substrate facing to the second transparent substrate, and the second electrode is disposed on a side of the second transparent substrate facing to the first transparent substrate.

7. The display panel according to claim 5 , wherein
patterns of color filters are disposed on the first transparent substrate or the second transparent substrate;
the patterns of the color filters correspond to openings of the black matrix; and
the colors of the color filters correspond to colors of the electrochromatic materials filled in the openings after a voltage is applied to the display panel.

8. The display panel according to claim 1 , wherein the electrochromatic material is an organic electrochromatic material, an inorganic electrochromatic material, or a composite electrochromatic material.

9. The display panel according to claim 8 , wherein the organic electrochromatic material comprises one or more of polythiophene materials and its derivants, Viologen materials, tetrathiafulvalene, metal phthalocyanine and polyaniline.

10. The display panel according to claim 8 , wherein the inorganic electrochromatic material comprises one or more of tungsten trioxide (WO 3 ), molybdenum trioxide (MoO 3 ) and vanadium pentoxide (V 2 O 5 ).

11. A display device comprising a display panel according to claim 1 .

12. The display device according to claim 11 , further comprising a backlight source, wherein the display panel is disposed at a light exiting side of the backlight source.

13. A method for manufacturing a display panel, comprising the following steps:
providing a first transparent substrate and a second transparent substrate, respectively,
disposing a first electrode on the first transparent substrate and disposing a second electrode on the second transparent substrate;
disposing a black matrix on the first transparent substrate or the second transparent substrate;
disposing patterns of color filters on the first transparent substrate or on the second transparent substrate, the patterns of the color filters corresponding to the openings of the black matrix, colors of the color filters corresponding to colors of the electrochromatic materials filled into the openings of the black matrix after a voltage applied to the display panel;
filling an electrochromatic material into openings of the black matrix; and
cell-assembling the first transparent substrate and the second transparent substrate in vacuum, wherein the black matrix is disposed between the first transparent substrate and the second transparent substrate.

14. The method according to claim 13 , wherein, in step 2 , the black matrix is disposed on a surface of the first transparent substrate on which the first electrode is disposed, or the black matrix is disposed on a surface of the second transparent substrate on which the second electrode is disposed.

15. The method according to claim 13 , wherein, in step 4 , after cell-assembling the first transparent substrate and the second transparent substrate in vacuum, the first electrode and the second electrode face to each other.

16. The method according to claim 13 , wherein, after the step of disposing patterns of color filters and before the step of filling an electrochromatic material, the method further comprises the step of:
providing a protection layer for the patterns of the color filters.

17. The method according to claim 13 , wherein the electrochromatic material is filled through an ODF process or an inkjet process.

18. The display panel according to claim 2 , wherein
patterns of color filters are disposed on the first transparent substrate or the second transparent substrate;
the patterns of the color filters correspond to openings of the black matrix; and
the colors of the color filters correspond to colors of the electrochromatic materials filled in the openings after a voltage is applied to the display panel.

Assignees

• Boe Technology Group Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Shi Yue

Classifications

• G09G3/38

  using electrochromic devices · CPC title

• G02F2001/1519

  Physics · mapped topic

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/1521

  Physics · mapped topic

• G02F1/161

  Gaskets; Spacers; Sealing of cells; Filling or closing of cells · CPC title