Liquid crystal display panel and liquid crystal display

• US 9,097,937 B2
• Filed: 07/24/2014
• Issued: 08/04/2015
• Est. Priority Date: 09/06/2011
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Suzuki, Teruaki
• Primary Examiner(s): Vu, Phu
• Application Number:
  US14/339,871
• Publication Number:
  US 20140333883A1
• Time in Patent Office: 376 Days
• Field of Search: 349141-142
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/133707 Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes
• CPC Class Codes: G02F 1/1343 Electrodes reflective electrodes G02F1/133553
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134318 having a patterned common electrode
• 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 1/134381 Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
• CPC Class Codes: G02F 2202/42 Materials having a particular dielectric constant

Abstract

A liquid crystal display panel and a liquid crystal display are disclosed. The liquid crystal display panel comprises: a first substrate and a second substrate, disposed opposite to each other to form a cell, as well as a liquid crystal layer between the two substrates. On the first substrate, there is formed with a first common electrode and a pixel electrode, arranged at an interval; on the second substrate, there is formed with a set of layers, the set of layers comprising: a second common electrode, and a dielectric layer covering one side of the second common electrode facing the first substrate; and the structure of the set of layers is different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode.

Claims

1. A liquid crystal display panel, comprising:

a first substrate and a second substrate, disposed opposite to each other to form a cell, as well as a liquid crystal layer between the two substrates;

wherein, on the first substrate, there is formed with a first common electrode and a pixel electrode, arranged at an interval;

on the second substrate, there is formed with a set of layers, the set of layers comprising;

a second common electrode, and a dielectric layer covering one side of the second common electrode facing the first substrate; and

wherein, the structure of the set of layers is different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode,

wherein the structure of the set of layers being different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode comprises a case in which;

the second common electrode in the set of layers is in a concave-convex shape, wherein a distance between a concave-shaped portion of the second common electrode and the first substrate is smaller than a distance between a convex-shaped portion of the second common electrode and the first substrate; and

the concave-shaped portion of the second common electrode is located at a position directly opposite to the first common electrode, and the convex-shaped portion of the second common electrode is located at a position directly opposite to the pixel electrode.

2. The liquid crystal display panel according to claim 1, wherein the structure of the set of layers being different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode comprises a case in which:

the dielectric layer in the set of layers comprises a first dielectric unit and a second dielectric unit, arranged at an interval and closely linked, wherein the first dielectric unit is located at a position directly opposite to the first common electrode, and the second dielectric unit is located at a position directly opposite to the pixel electrode; and

the dielectric constant of the first dielectric unit is greater than that of the second dielectric unit.

3. The liquid crystal display panel according to claim 2, wherein, a width of the first dielectric unit is consistent with a width of the second dielectric unit.

4. The liquid crystal display panel according to claim 1, wherein a width of the concave-shaped portion of the second common electrode is consistent with a width of the first common electrode.

5. The liquid crystal display panel according to claim 1, wherein the convex-shaped portion of the second common electrode is formed with a slit, and the slit is located at a position directly opposite to the pixel electrode.

6. The liquid crystal display panel according to claim 5, wherein a width of the slit is consistent with a width of the pixel electrode.

7. A liquid crystal display, comprising:

a liquid crystal display panel, and

a backlight source providing backlight for the liquid crystal display panel,

wherein the liquid crystal display panel comprises;

a first substrate and a second substrate, disposed opposite to each other to form a cell, as well as a liquid crystal layer between the two substrates;

wherein, on the first substrate, there is formed with a first common electrode and a pixel electrode, arranged at an interval;

on the second substrate, there is formed with a set of layers, the set of layers comprising;

a second common electrode, and a dielectric layer covering one side of the second common electrode facing the first substrate; and

wherein, the structure of the set of layers is different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode,

wherein the structure of the set of layers being different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode comprises a case in which;

the second common electrode in the set of layers is in a concave-convex shape, wherein a distance between a concave-shaped portion of the second common electrode and the first substrate is smaller than a distance between a convex-shaped portion of the second common electrode and the first substrate; and

the concave-shaped portion of the second common electrode is located at a position directly opposite to the first common electrode, and the convex-shaped portion of the second common electrode is located at a position directly opposite to the pixel electrode.

8. The liquid crystal display according to claim 7, wherein the structure of the set of layers being different at a position directly opposite to the first common electrode from that at a position directly opposite to the pixel electrode comprises a case in which:

the dielectric layer in the set of layers comprises a first dielectric unit and a second dielectric unit, arranged at an interval and closely linked, wherein the first dielectric unit is located at a position directly opposite to the first common electrode, and the second dielectric unit is located at a position directly opposite to the pixel electrode; and

the dielectric constant of the first dielectric unit is greater than that of the second dielectric unit.

9. The liquid crystal display according to claim 8, wherein, a width of the first dielectric unit is consistent with a width of the second dielectric unit.

10. The liquid crystal display according to claim 7, wherein a width of the concave-shaped portion of the second common electrode is consistent with a width of the first common electrode.

11. The liquid crystal display according to claim 7, wherein the convex-shaped portion of the second common electrode is formed with a slit, and the slit is located at a position directly opposite to the pixel electrode.

12. The liquid crystal display according to claim 11, wherein a width of the slit is consistent with a width of the pixel electrode.