Display panel

• US 10,642,094 B2
• Filed: 10/04/2018
• Issued: 05/05/2020
• Est. Priority Date: 10/06/2017
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chen, Ju-Chin, Lee, Seok-Lyul, Yang, Syuan-Ling, Wu, Yang-En
• Primary Examiner(s): Nguyen, Dung T
• Application Number:
  US16/151,344
• Publication Number:
  US 20190107753A1
• Time in Patent Office: 579 Days
• CPC Class Codes: G02F 1/13306 Circuit arrangements or driving methods for the control of single liquid crystal cells G02F1/132, G02F1/133382 take precedence
• CPC Class Codes: G02F 1/1334 based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/134372 for fringe field switching [FFS] where the common electrode is not patterned
• CPC Class Codes: G02F 1/13471 in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells G02F1/13475 takes precedence
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel

Abstract

A display panel including a first substrate, a second substrate, a first display medium layer, a polarizing layer, and a second display medium layer is provided. The first display medium layer is disposed between the first substrate and the second substrate. The first display medium layer includes a first base material and a plurality of first encapsulated particles immobilized in the first base material. The average size of the first encapsulated particles is 1 nm to 400 nm. The polarizing layer is disposed between the first display medium layer and the second substrate. The polarizing layer is in contact with the first display medium layer. The second display medium layer is disposed between the polarizing layer and the second substrate.

Claims

1. A display panel, comprising:

a first substrate;

a second substrate;

a first display medium layer disposed between the first substrate and the second substrate, wherein the first display medium layer comprises a first base material and a plurality of first encapsulated particles immobilized in the first base material, and an average size of the first encapsulated particles is 1 nm to 400 nm;

a polarizing layer disposed between the first display medium layer and the second substrate, wherein the polarizing layer is in contact with the first display medium layer;

a second display medium layer disposed between the polarizing layer and the second substrate; and

a first polarizer and a second polarizer, wherein the first polarizer is disposed on an outside of the first substrate and the second polarizer is disposed on an outside of the second substrate such that the first substrate and the second substrate are located between the first polarizer and the second polarizer.

2. The display panel of claim 1, wherein a plurality of liquid crystal molecules is filled in the first encapsulated particles.

3. The display panel of claim 1, further comprising a sealant, wherein the sealant is disposed between the first substrate and the second substrate, and the sealant surrounds the first display medium layer, the second display medium layer, and the polarizing layer.

4. The display panel of claim 1, wherein a light absorption axis direction of the polarizing layer is perpendicular to a light absorption axis direction of the first polarizer and also perpendicular to a light absorption axis direction of the second polarizer.

5. The display panel of claim 1, wherein a distance between the first display medium layer and the second display medium layer is substantially equal to a thickness of the polarizing layer.

6. The display panel of claim 1, wherein the second display medium layer comprises a plurality of liquid crystal molecules.

7. The display panel of claim 6, wherein the second display medium layer further comprises a second base material and a plurality of second encapsulated particles immobilized in the second base material, the liquid crystal molecules are filled in the second encapsulated particles, and an average size of the second encapsulated particles is 1 urn to 400 nm.

8. The display panel of claim 6, further comprising an alignment layer disposed between the second substrate and the second display medium layer, and an alignment direction of the alignment layer is parallel to a light absorption axis direction of the polarizing layer.

9. The display panel of claim 1, wherein the polarizing layer is in contact with the second display medium layer.

10. The display panel of claim 1, wherein a thickness of the polarizing layer is 1 nm to 30 μ

m.

11. The display panel of claim 1, further comprising a first driving layer and a second driving layer, wherein the first driving layer is disposed between the first substrate and the first display medium layer, and the second driving layer is disposed between the second substrate and the second display medium layer.

12. A display panel, comprising:

a first substrate;

a second substrate;

a first display medium layer disposed between the first substrate and the second substrate, wherein the first display medium layer comprises a first base material and a plurality of first encapsulated particles immobilized in the first base material, and an average size of the first encapsulated particles is 1 nm to 400 nm;

a polarizing layer disposed between the first display medium layer and the second substrate, wherein the polarizing layer is in contact with the first display medium layer; and

a second display medium layer disposed between the polarizing layer and the second substrate, wherein the second display medium layer comprises a plurality of liquid crystal molecules, a second base material and a plurality of second encapsulated particles immobilized in the second base material, the liquid crystal molecules are filled in the second encapsulated particles, and an average size of the second encapsulated particles is 1 nm to 400 nm.

13. The display panel of claim 12, further comprising a sealant, wherein the sealant is disposed between the first substrate and the second substrate, and the sealant surrounds the first display medium layer, the second display medium layer, and the polarizing layer.

14. The display panel of claim 12, further comprising an alignment layer disposed between the second substrate and the second display medium layer, and an alignment direction of the alignment layer is parallel to a light absorption axis direction of the polarizing layer.

15. The display panel of claim 12, further comprising a first driving layer and a second driving layer, wherein the first driving layer is disposed between the first substrate and the first display medium layer, and the second driving layer is disposed between the second substrate and the second display medium layer.

16. A display panel, comprising:

a first substrate;

a second substrate;

a first display medium layer disposed between the first substrate and the second substrate, wherein the first display medium layer comprises a first base material and a plurality of first encapsulated particles immobilized in the first base material, and an average size of the first encapsulated particles is 1 nm to 400 nm;

a polarizing layer disposed between the first display medium layer and the second substrate, wherein the polarizing layer is in contact with the first display medium layer, and a thickness of the polarizing layer is 1 nm to 30 μ

m; and

a second display medium layer disposed between the polarizing layer and the second substrate.

17. The display panel of claim 16, wherein a plurality of liquid crystal molecules is filled in the first encapsulated particles.

18. The display panel of claim 16, further comprising a sealant, wherein the sealant is disposed between the first substrate and the second substrate, and the sealant surrounds the first display medium layer, the second display medium layer, and the polarizing layer.

19. The display panel of claim 16, wherein the polarizing layer is in contact with the second display medium layer.

20. The display panel of claim 16, further comprising a first driving layer and a second driving layer, wherein the first driving layer is disposed between the first substrate and the first display medium layer, and the second driving layer is disposed between the second substrate and the second display medium layer.