Liquid-crystal display device and electronic equipment

• US 6,614,498 B1
• Filed: 06/06/2000
• Issued: 09/02/2003
• Est. Priority Date: 10/07/1998
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Inami, Takashi, Tanaka, Chihiro, Ushiki, Takeyoshi, Tsuyuki, Tadashi, Yamaguchi, Yoshio
• Primary Examiner(s): Kim, Robert H.
• Assistant Examiner(s): DUONG, THOI V
• Application Number:
  US09/555,948
• Time in Patent Office: 1,183 Days
• Field of Search: 349/144, 349/145, 349/146, 349/108, 349/109, 349/149, 349/49, 349/50, 349/51, 349/143, 349/106, 350/339, 345/92
• US Class Current: 349/143
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1365 in which the switching element is a two-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/122 having a particular pattern
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements

Abstract

Color layers R, G, and B of a color filter are arranged in a delta pattern. A data line (212) for applying a voltage to the sub-pixels is connected, through TFD (220), to pixel electrodes (234) of the sub-pixels respectively corresponding to the three colors in a fixed order in a periodic pattern, and pixel electrodes (234) commonly connected to a single data line (212) are arranged to the same side of the data line (212). The potential of the sub-pixels for a particular color are equally influenced by the potential of the sub-pixels of other colors.

Claims

1. A liquid-crystal display device having sub-pixels, respectively corresponding to three different colors and arranged in a triangular configuration, characterized in that a conductor line for applying a voltage to the sub-pixels is connected to pixel electrodes of the sub-pixels respectively corresponding to the three colors in a fixed order, in a cyclic pattern, and

pixel electrodes commonly connected to a single conductor line are arranged on the same side of the conductor line,

wherein the conductor line is connected to the pixel electrodes in a pattern having a cycle of a multiple of six pixel electrodes,

a pattern of the colors corresponding to the sub-pixels has a cycle of a multiple of six, and

the conductor line is spaced apart from each pixel electrode by pre-selected distances, the distance from at least one pixel electrode is longer than the distance form the other pixel electrodes.

2. A liquid-crystal display device according to claim 1

wherein the conductor line is a data line being spaced apart from each pixel electrode by one of a plurality of pre-selected distances, each pre-selected distance corresponding to a length of the data line extending along each pixel electrode.

3. A liquid-crystal display device according to claim 1, characterized in that the conductor line is connected to each pixel electrode through an active element.

4. A liquid-crystal display device according to claim 3, characterized in that the active element is a thin-film diode having a conductor/insulator/conductor structure.

6. A liquid-crystal display device according to claim 1 wherein the conductor line is formed so that parasitic capacitances thereof with the pixel electrodes of the sub-pixels are equalized among the sub-pixels.

8. A liquid-crystal display device according to claim 2, wherein said plurality of pre-selected distances further comprise:

a shortest distance for pixel electrodes bordered only along one side by the data line;

an intermediate distance for pixel electrodes bordered only along two adjacent sides by the data line; and

a longest distance for pixel electrodes bordered along three adjacent sides by the data line.

5. Electronic equipment comprising a liquid-crystal display device having sub-pixels, respectively corresponding to three different colors and arranged in a triangular configuration, characterized in that a conductor line for applying a voltage to the sub-pixels is connected to pixel electrodes of the sub-pixels respectively corresponding to the three colors in a fixed order in a periodic pattern, and

pixel electrodes commonly connected to a single conductor line are arranged on the same side of the conductor line,

wherein the conductor line is connected to the pixel electrodes in a pattern having a period of a multiple of six pixel electrodes,

wherein a pattern of the colors corresponding to the sub-pixels has a period of a multiple of six.

7. Electronic equipment comprising a liquid-crystal display device according to claim 5 wherein the conductor line is formed so that parasitic capacitances thereof with the pixel electrodes of the sub-pixels are equalized among the sub-pixels.