LIQUID CRYSTAL DEVICE AND ELECTRONIC APPARATUS

• US 20100079693A1
• Filed: 08/12/2009
• Published: 04/01/2010
• Est. Priority Date: 09/30/2008
• Status: Active Grant

• Current Assignee: Japan Display West Incorporated (Japan Display Incorporated)
• Original Assignee: Epson Imaging Devices Corporation (Seiko Group)
• Inventors: YOSHIDA, Shuhei, TANAKA, Shinichiro
• Granted Patent: US 8,310,608 B2
• Time in Patent Office: Days
• US Class Current: 349/40
• 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]

Abstract

A lateral electric field mode liquid crystal device comprising: a first substrate having pixel electrodes and common electrodes which are provided on one surface thereof; a second substrate disposed so as to face that surface of the first substrate with a predetermined distance therebetween; a liquid crystal layer sandwiched between the first substrate and the second substrate; and a loop-shaped sealing member disposed so as to surround the liquid crystal layer, with the liquid crystal device driving the liquid crystal layer by an electric field generated between the pixel electrodes and the common electrodes.

Claims

1. A lateral electric field mode liquid crystal device comprising:

a first substrate having pixel electrodes and common electrodes which are provided on one surface thereof;

a second substrate disposed so as to face that the surface of the first substrate with a predetermined distance therebetween;

a liquid crystal layer sandwiched between the first substrate and the second substrate; and

a loopshaped sealing member disposed so as to surround the liquid crystal layer, with the liquid crystal device driving the liquid crystal layer by an electric field generated between the pixel electrodes and the common electrodes,

wherein on the surface of the first substrate disposed close to the liquid crystal layer, a driving circuit and wirings electrically connected to the driving circuit are formed,

wherein on the surface of the second substrate disposed close to the liquid crystal layer, an electrostatic shielding layer and an insulating layer formed of resin materials are formed in this order,

wherein the wirings and the electrostatic shielding layer are electrically connected via a conductive member which is formed in an exposed portion of the insulating layer at the outer circumference of the sealing member, and the potential of the electrostatic shielding layer is controlled to be at predetermined potential by the driving circuit.

2. The liquid crystal device according to claim 1, wherein the insulating layer is a laminate of a color filter layer and an overcoat layer formed on the side of the color filter layer disposed close to the liquid crystal layer, where the color filter layer includes a coloring layer which is formed so as to overlap with the pixel electrodes in a plan view, and a light shielding layer which is formed in an area where the coloring layer is not formed.

3. The liquid crystal device according to claim 1, wherein the insulating layer is a laminate of a coloring layer which is formed so as to overlap with the pixel electrodes in a plan view, and an overcoat layer which is formed on a side of the coloring layer disposed close to the liquid crystal layer.

4. The liquid crystal device according to claim 1,

wherein a color filter layer is formed on the surface of the second substrate disposed close to the liquid crystal layer, where the color filter layer includes a coloring layer which is formed so as to overlap with the pixel electrodes in a plan view, and a light shielding layer which is formed in an area where the coloring layer is not formed, and

wherein the insulating layer is an overcoat layer which is formed on the side of the color filter layer disposed close to the liquid crystal layer.

5. The liquid crystal device according to claim 2, wherein the conductive member and the wirings are connected via a conductive film which is formed on the side of the wirings disposed close to the liquid crystal layer.

6. An electronic apparatus comprising the liquid crystal device according to claim 1.