LIQUID CRYSTAL DISPLAY PANEL

• US 20110222016A1
• Filed: 03/03/2011
• Published: 09/15/2011
• Est. Priority Date: 03/10/2010
• Status: Abandoned Application

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yoshida, Koji, Sugiyama, Hiroki, Kaneko, Hideki
• Application Number:
  US13/039,985
• Publication Number:
  US 20110222016A1
• Time in Patent Office: Days
• US Class Current: 349/155
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13396 Spacers having different sizes
• CPC Class Codes: G02F 1/13398 Spacer materials; Spacer properties
• CPC Class Codes: G02F 1/134372 for fringe field switching [FFS] where the common electrode is not patterned

Abstract

A liquid crystal display panel includes: one pair of substrates each of which is disposed so as to face each other with a liquid crystal layer pinched therebetween; alignment films that are formed on opposing faces of the one pair of substrates with the liquid crystal layer pinched therebetween; a plurality of columnar spacers that are formed in a display area on one side of the one pair of substrates and maintain a cell gap between the one pair of substrates; and a light shielding member that is formed on one side of the one pair of substrates of a non-opening portion including a spot at which the columnar spacers are formed.

Claims

1. A liquid crystal display panel comprising:

one pair of substrates each of which is disposed so as to face each other with a liquid crystal layer pinched therebetween;

alignment films that are formed on opposing faces of the one pair of substrates with the liquid crystal layer pinched therebetween;

a plurality of columnar spacers that are formed in a display area on one side of the one pair of substrates and maintain a cell gap between the one pair of substrates; and

a light shielding member that is formed on one side of the one pair of substrates of a non-opening portion including a spot at which the columnar spacers are formed,

wherein the columnar spacers include a first columnar spacer that is disposed such that a front end portion of the first columnar spacer is normally brought into contact with the other side of the one pair of substrates and a second columnar spacer, which is lower than the first columnar spacer, having a front end portion that is normally separated from the other side of the one pair of substrates by a constant distance and is brought into contact with the other side of the one pair of substrates at time of application of pressure to one substrate of the one pair of substrates, and

wherein the light shielding member is formed such that a shortest distance between the second columnar spacer and a peripheral edge portion of the light shielding member in the plan view is shorter than a shortest distance between the first columnar spacer and the peripheral edge portion of the light shielding member in the plan view.

2. The liquid crystal display panel according to claim 1,

wherein a pixel electrode and a common electrode are formed below the alignment film on one substrate of the one pair of substrates.

3. The liquid crystal display panel according to claim 2,

wherein the pixel electrode and the common electrode are formed in a state of being insulated from each other with an inter-electrode insulating film pinched therebetween, and

wherein a slit-shaped opening is formed in one electrode of either the pixel electrode or of the common electrode that is closer to the alignment film.

4. The liquid crystal display panel according to claim 3,

wherein one electrode of either the pixel electrode or of the common electrode that is disposed on one substrate side of the inter-electrode insulating film is formed on an interlayer resin film that is formed on the one substrate of the one pair of substrates.

5. The liquid crystal display panel according to claim 1,

wherein a shortest distance between a peripheral edge portion of the light shielding member, with which the second columnar spacer is coated, and the second columnar spacer in the plan view is set to be shorter than a shortest distance between a peripheral edge portion of the light shielding member, with which the first columnar spacer is coated, and the first columnar spacer in the plan view by a distance that is equal to or greater than 2 μ

m and is equal to or less than 6 μ

m.

6. The liquid crystal display panel according to claim 1,

wherein a cross-sectional area of the second columnar spacer is larger than a cross-sectional area of the first columnar spacer.

7. The liquid crystal display panel according to claim 6,

wherein a plurality of the second columnar spacers are provided and each of the second columnar spacers has the same height, and

wherein a total cross-sectional area of the plurality of columnar spacers is set to be larger than the cross-sectional area of the first columnar spacer.