Title:
バックライト装置及び液晶表示装置
Document Type and Number:
Japanese Patent JP4722136
Kind Code:
B2
Abstract:
In order to control light emission of light emitting diodes, current dividing circuits are used to supply currents of a substantially fixed level to all lines. Light emitting diodes are arranged in groups of a predetermined number of LEDs in series, and sets of the light emitting diodes connected to the first line and sets of the light emitting diodes connected to the second line are laid out on the same straight line so as to form a single row. Substrates with these formed thereon are arranged adjacent to each other in the direction of the rows, so that sets of the light emitting diodes connected to the first line and sets of the light emitting diodes connected to the second line are arranged alternately. With this configuration, it is possible to provide a backlight device with a plurality of LED arrays arranged thereon, which can uniformly illuminate the entire screen with light from the LED arrays.
Inventors:
Moriyasu Mitsuhiro
Hideyuki Chikazawa
Masaki Shimizu
Hideyuki Chikazawa
Masaki Shimizu
Application Number:
JP2007547925A
Publication Date:
July 13, 2011
Filing Date:
November 27, 2006
Export Citation:
Assignee:
Sharp Corporation
International Classes:
F21V19/00; F21S2/00; F21V23/00; G02F1/13357; H01L33/00; H01L33/48; H01L33/50; H05B37/02; F21Y101/02
Domestic Patent References:
| JP2004139876A | 2004-05-13 | |||
| JP2005100800A | 2005-04-14 | |||
| JP2004335443A | 2004-11-25 |
Attorney, Agent or Firm:
Eisuke Fujimoto
Masayoshi Kanda
Akio Miyao
Nobuyuki Baba
Masayoshi Kanda
Akio Miyao
Nobuyuki Baba