Liquid crystal display device

• US 20020033918A1
• Filed: 06/08/2001
• Published: 03/21/2002
• Est. Priority Date: 06/09/2000
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Tsuruta, Maki, Kida, Yoshitoshi, Shigeno, Nobuyuki
• Application Number:
  US09/877,584
• Publication Number:
  US 20020033918A1
• Time in Patent Office: Days
• US Class Current: 349/114
• CPC Class Codes: G02F 1/133555 Transflectors

Abstract

Process of simplifying the manufacturing process and obtaining bright and high quality display for the semi-transmission type liquid crystal display device. The device has a liquid crystal panel of a transmission area having a transparent electrode as a pixel electrode as well as a reflection area having a reflector as a pixel electrode. The transparent electrode is formed of an ITO film while the reflector is formed of an Ag film which is directly formed on the ITO film. Also, the transparent electrode is provided directly on a transparent substrate of the liquid crystal panel. Or the gaps of mutually adjoining reflectors are shielded by a gate line, a signal line, or, simultaneously with formation of the gate line or the signal line, by a shield layer of the same materials as the gate line or the signal line.

Claims

1. A semi-transmission type liquid crystal display device having a transmission area provided with a transparent electrode as a pixel electrode and a reflection area provided with a reflector electrode as a pixel electrode in a liquid crystal panel thereof, wherein said transparent electrode of the transparent area being formed of an ITO film;

and

said reflector electrode of the reflection area being formed of an Ag film directly formed on said ITO film.

2. A manufacturing process of a semi-transmission type liquid crystal display device having a transmission area provided with a transparent electrode as a pixel electrode and a reflection area provided with a reflector electrode as a pixel electrode in the liquid crystal panel comprising the steps of:

forming an ITO film as said transparent electrode of the transmission area;

patterning said ITO film;

forming an Ag film directly on said ITO film; and

patterning said Ag film as to form said reflector electrode of the reflection area.

3. A semi-transmission type liquid crystal display device having a transmission area provided with a transparent electrode as a pixel electrode and a reflection area provided with a reflector electrode as a pixel electrode in a liquid crystal panel, wherein

said transparent electrode of the transparent area is provided directly on a transparent substrate of the liquid crystal panel.

4. A semi-transmission type liquid crystal display device having a transmission area provided with a transparent electrode as a pixel electrode and a reflection area provided with a reflector as a pixel electrode in a liquid crystal panel, wherein

gaps of adjacent reflector electrodes being optically shielded by a shielding layer.

5. A semi-transmission type liquid crystal display device as cited in claim 4, wherein

formed of a gate line, a signal line or simultaneously with formation of the gate line or the signal line, same materials as the gate line or the signal line.