DISPLAY PANEL

• US 20190107753A1
• Filed: 10/04/2018
• Published: 04/11/2019
• 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
• Granted Patent: US 10,642,094 B2
• Time in Patent Office: 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, and 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.

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, further comprising 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.

5. The display panel of claim 4, 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.

6. 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.

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

8. The display panel of claim 7, 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 nm to 400 nm.

9. The display panel of claim 7, 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.

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

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

m.

12. 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.

13. The display panel of claim 12, further comprising a color filter layer, wherein the color filter layer is integrated in one of the first driving layer and the second driving layer.

14. The display panel of claim 13, wherein one of the first driving layer and the second driving layer comprises a plurality of display pixel structures, the color filter layer comprises a plurality of color filter patterns, and the color filter patterns are respectively integrated in the display pixel structures.

15. The display panel of claim 13, wherein one of the first driving layer and the second driving layer comprises a plurality of display pixel structures, the other one of the first driving layer and the second driving layer comprises a plurality of switch pixel structures, and in a normal direction of the display panel, an area of each of the switch pixel structures is overlapped with an area of at least one display pixel structure.

16. The display panel of claim 15, wherein N display pixel structures form a basic display unit, N is a positive integer greater than 1, and in a normal direction of the display panel, an area of a single switch pixel structure is overlapped with an area of the N display pixel structures in a single basic display unit.

17. The display panel of claim 15, wherein

an area of a single switch pixel structure is overlapped with an area of a single display pixel structure in the normal direction of the display panel,

N display pixel structures form a basic display unit, and

an area of N switch pixel structures is overlapped with an area of the N display pixel structures in the same basic display unit, the N switch pixel structures are operated in an equipotential manner, and N is a positive integer greater than 1.

18. The display panel of claim 17, wherein the N switch pixel structures each comprises a pixel electrode and a common electrode alternately arranged, and the pixel electrodes of the N switch pixel structures are electrically connected to one another.

19. The display panel of claim 17, wherein the N switch pixel structures each comprises a pixel electrode and a common electrode, and the pixel electrode and the common electrode are a same film layer.

20. The display panel of claim 17, wherein the N switch pixel structures each comprises a pixel electrode and a common electrode, and the pixel electrode and the common electrode are different film layers.