Display device and method thereof

• US 8,416,357 B2
• Filed: 08/20/2012
• Issued: 04/09/2013
• Est. Priority Date: 08/19/2008
• Status: Expired due to Fees

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Dong-Gyu
• Primary Examiner(s): Briggs, Nathanael R
• Application Number:
  US13/589,402
• Publication Number:
  US 20120313121A1
• Time in Patent Office: 232 Days
• Field of Search: 349 38- 39, 349/129
• US Class Current: 349/39
• CPC Class Codes: G02F 1/136213 Storage capacitors associated with the pixel electrode
• CPC Class Codes: G02F 1/136227 Through-hole connection of the pixel electrode to the active element through an insulation layer
• CPC Class Codes: G02F 1/1393 the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells G02F1/1396, G02F1/141 take precedence
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H01L 27/1248 with a particular composition or shape of the interlayer dielectric specially adapted to the circuit arrangement

Abstract

A display device includes a pixel electrode disposed on a first substrate, and including a first portion, a second portion and a connection portion disposed between the first portion and the second portion, a capacitor line disposed on the first substrate and between the first substrate and the connection portion, a nonsymmetrical shaped capacitor electrode disposed on the first substrate and overlapping the pixel electrode and the capacitor line, and electrically connected to the pixel electrode through contact holes, and a common electrode disposed on a second substrate and including first and second opening patterns disposed overlapping the first portion and the second portion of the pixel electrode, respectively.

Claims

1. A display device comprising:

a first substrate;

a pixel electrode disposed on the first substrate, the pixel electrode comprising a first portion, a second portion, and a connection portion disposed between the first and second portions, the connection portion being continuous with the first and second portions;

a capacitor line disposed on the first substrate, and disposed between the first substrate and the connection portion of the pixel electrode;

a capacitor electrode disposed on the first substrate substantially in a dumbbell shape of an island type, and overlapping the pixel electrode and the capacitor line;

an insulating layer including a first contact hole and a second contact hole, the insulating layer disposed between the capacitor electrode and the pixel electrode;

a second substrate; and

a common electrode disposed on the second substrate, and comprising a first opening pattern and a second opening pattern overlapping the first portion and the second portion of the pixel electrode, respectively,

wherein the pixel electrode is electrically connected to the capacitor electrode through both the first and second contact holes.

2. The display device of claim 1, wherein the first contact hole overlaps the first portion of the pixel electrode, and the second contact hole overlaps the second portion of the pixel electrode.

3. The display device of claim 2, wherein a whole of the first contact hole and the second contact hole is overlapped by the first opening pattern and the second opening pattern of the common electrode, respectively.

4. The display device of claim 1, the connection portion extended between the first portion and the second portion of the pixel electrode, is extended substantially parallel to a longitudinal extension of the capacitor electrode.

5. The display device of claim 4, further comprise an organic insulation pattern disposed on the first substrate and directly contacting a lower surface of the pixel electrode.

6. The display device of claim 5, wherein the organic insulation pattern is a color filter.

7. The display device of claim 1, further comprising

a switch element electrically connected to the pixel electrode;

a pad electrically connected to the switch element, the pad transmitting a signal to the switch element;

an auxiliary pad connected to the pad through a pad contact hole of the insulating layer, and

an auxiliary pattern disposed surrounding the pad contact hole in a plan view.

8. The display device of claim 1, wherein the capacitor electrode is a nonsymmetrical dumbbell shape, in a plan view.