Display device

• US 20090102826A1
• Filed: 12/18/2008
• Published: 04/23/2009
• Est. Priority Date: 04/09/2004
• Status: Abandoned Application

• Current Assignee: Hitachi Displays Limited (Japan Display Incorporated), Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: Yasukawa, Shinji, Ono, Kikuo, Baba, Masashi, Oke, Ryutaro, Tanaka, Masahiro, Tsubokura, Masaki, Takenaka, Yuuichi, Ojima, Kazunori, Yamagishi, Yasuhiko
• Application Number:
  US12/314,894
• Publication Number:
  US 20090102826A1
• Time in Patent Office: Days
• US Class Current: 345/211
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2300/0443 with several sub-pixels for the same colour in a pixel, not specifically used to display gradations G09G3/364 takes precedence
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: G09G 3/3655 Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
• CPC Class Codes: G09G 3/3688 suitable for active matrices only

Abstract

A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.

Claims

1. A display device including;

a high-voltage side inverter printed circuit board and a low-voltage side inverter printed circuit board which are fixed to a metal frame,

an inverter transformer is arranged at the high-voltage side,

a high-voltage side inverter printed circuit board and a low-voltage side inverter printed circuit board are arranged at the end portions of the metal frame facing to each other, and

a connecting member which connecting between the high-voltage side inverter printed circuit board and the low-voltage side inverter printed circuit board.

2. A display device according to claim 1, wherein the size of the high voltage side inverter printed circuit board is larger than the size of the low-voltage side inverter printed circuit board.

3. A display device according to claim 1, wherein the number of the low-voltage side inverter printed circuit boards are larger than the number of the high-voltage side inverter printed circuit boards.

4. A display device including;

a high-voltage side inverter printed circuit board and a low-voltage side inverter printed circuit board which are fixed to a metal frame,

an inverter transformer is arranged at the high-voltage side,

a fixing portion of the high-voltage side inverter printed circuit board and the low-voltage side inverter printed circuit board are formed on the metal frame,

the fixing portions are arranged in a fixable state even when the high-voltage side inverter printed circuit board and the low-voltage side inverter printed circuit board are replaced.

5. A display device according to claim 4, wherein the fixing portions are arranged on the both sides of the high-voltage side inverter printed circuit board,

the fixing portions are arranged on one side of the low-voltage side inverter printed circuit board.

6. A display device according to claim 5, wherein the width of the low-voltage side inverter printed circuit board is equal to or less than ½

of the width of the high-voltage side inverter printed circuit board.

7. A display device according to claim 6, wherein the width of the low-voltage side inverter printed circuit board is equal to or less than ⅓

of the width of the high-voltage side inverter printed circuit board.