Liquid crystal display panel and liquid crystal display apparatus

• US 9,952,457 B2
• Filed: 10/29/2013
• Issued: 04/24/2018
• Est. Priority Date: 07/12/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Feng, Yuanming
• Primary Examiner(s): Briggs, Nathanael R
• Application Number:
  US14/381,335
• Publication Number:
  US 20150301364A1
• Time in Patent Office: 1,638 Days
• CPC Class Codes: G02F 1/1323 Arrangements for providing a switchable viewing angle
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133528 Polarisers
• 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 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
• CPC Class Codes: G02F 1/137 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
• CPC Class Codes: G02F 1/13793 Blue phases

Abstract

The present invention provides a liquid crystal display panel and a liquid crystal display apparatus. The liquid crystal display panel comprises a first polarizer, a second polarizer and a liquid crystal cell provided between the first polarizer and the second polarizer, wherein the liquid crystal display panel further comprises a view angle control layer provided between the first polarizer and the second polarizer, the refractivity of the view angle control layer in a horizontal direction can vary with an electric field in the horizontal direction applied to the view angle control layer.

Claims

1. A liquid crystal display panel comprising a first polarizer, a second polarizer and a liquid crystal cell provided between the first polarizer and the second polarizer, wherein the liquid crystal display panel further comprises a view angle control layer provided between the first polarizer and the second polarizer, the refractivity of the view angle control layer in a horizontal direction varies with an electric field in the horizontal direction applied to the view angle control layer;

wherein the view angle control layer comprises an electrode layer and an electric birefringence material layer, wherein the electrode layer comprises a first electrode and a second electrode, and the electric field in the horizontal direction is generated between the first electrode and the second electrode to control the refractivity of the electric birefringence material layer in the horizontal direction, the first electrode and the second electrode are provided on the same side of the electric birefringence material layer; and

wherein the liquid crystal cell comprises a first substrate, a second substrate and a liquid crystal material packaged between the first substrate and the second substrate, an array substrate is provided on one of the first substrate and the second substrate, and a color filter substrate is provided on the other of the first substrate and the second substrate;

wherein the first electrode is plate-shaped, and the second electrode comprises a plurality of second electrode strips provided with intervals therebetween, wherein the second electrode strips are electrically connected with each other, and the second electrode is provided between the first electrode and the electric birefringence material layer; and

wherein the view angle control layer further comprises a first insulation layer provided between the first electrode and the second electrode,

the electric birefringence material layer comprises nitrobenzene or monopotassium phosphate crystal, and only an intensity of the electric field in the horizontal direction is adjusted, so that a view angle of the liquid crystal display panel is adjusted.

3. The liquid crystal display panel of claim 1, wherein the electric birefringence material layer comprises blue phase liquid crystals, and the view angle control layer further comprises a package substrate, wherein the blue phase liquid crystals are packaged between the package substrate and the liquid crystal cell.

5. The liquid crystal display panel of claim 1, wherein the view angle control layer is provided between the second polarizer and the liquid crystal cell, and the electrode layer is provided on the lower surface of the liquid crystal cell.

6. The liquid crystal display panel of claim 1, wherein the view angle control layer is provided between the first polarizer and the liquid crystal cell, and the electrode layer is provided on the upper surface of the liquid crystal cell.

7. A liquid crystal display apparatus comprising the liquid crystal display panel of claim 1.

2. A liquid crystal display panel comprising a first polarizer, a second polarizer and a liquid crystal cell provided between the first polarizer and the second polarizer, wherein the liquid crystal display panel further comprises a view angle control layer provided between the first polarizer and the second polarizer, the refractivity of the view angle control layer in a horizontal direction varies with an electric field in the horizontal direction applied to the view angle control layer;

wherein the view angle control layer comprises an electrode layer and an electric birefringence material layer, wherein the electrode layer comprises a first electrode and a second electrode, and the electric field in the horizontal direction is generated between the first electrode and the second electrode to control the refractivity of the electric birefringence material layer in the horizontal direction, the first electrode and the second electrode are provided on the same side of the electric birefringence material layer;

wherein the liquid crystal cell comprises a first substrate, a second substrate and a liquid crystal material packaged between the first substrate and the second substrate, an array substrate is provided on one of the first substrate and the second substrate, and a color filter substrate is provided on the other of the first substrate and the second substrate;

wherein the first electrode comprises a plurality of first electrode strips electrically connected with each other, the second electrode comprises a plurality of second electrode strips electrically connected with each other, and the first electrode strips and the second electrode strips are provided alternatively; and

wherein the view angle control layer further comprises a second insulation layer which is bonded with the electrode layer, and is provided between the electrode layer and the electric birefringence material layer,

the electric birefringence material layer comprises nitrobenzene or monopotassium phosphate crystal, and only an intensity of the electric field in the horizontal direction is adjusted, so that a view angle of the liquid crystal display panel is adjusted.

4. The liquid crystal display panel of claim 2, wherein the electric birefringence material layer comprises blue phase liquid crystals, and the view angle control layer further comprises a package substrate, wherein the blue phase liquid crystals are packaged between the package substrate and the liquid crystal cell.

8. The liquid crystal display panel of claim 2, wherein the view angle control layer is provided between the second polarizer and the liquid crystal cell, and the electrode layer is provided on the lower surface of the liquid crystal cell.

9. The liquid crystal display panel of claim 2, wherein the view angle control layer is provided between the first polarizer and the liquid crystal cell, and the electrode layer is provided on the upper surface of the liquid crystal cell.

10. A liquid crystal display apparatus comprising the liquid crystal display panel of claim 2.