Title:
ＬＥＤバックライト及びそれを用いたＬＥＤ表示装置
Document Type and Number:
Japanese Patent JP6528503
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable further thinning of an LED backlight and an LED display device using the same by reducing an optical distance (OD) while maintaining necessary and sufficient optical characteristics.SOLUTION: An LED backlight 10 includes a substrate 1 for an LED element having a flexible substrate film 11, and a metal wiring part 13 formed of metal whose heat conductivity is 200 W/(mxK) or more on the substrate film 11, a plurality of LED elements 2 arranged in a matrix state on the substrate 1 for an LED element in such a manner that it becomes conductive by the metal wiring part 13, and a diffuser panel 3 having a light diffusion effect. Arrangement density of the LED elements 2 on the substrate 1 for an LED element is 0.02 pieces/cmor more, and an optical distance (OD) between the LED elements 2 and the diffuser panel 3 is 18 mm or less.SELECTED DRAWING: Figure 4
Inventors:
Satoshi Shibasaki
Takayuki Komai
Takayuki Komai
Application Number:
JP2015070412A
Publication Date:
June 12, 2019
Filing Date:
March 30, 2015
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
F21S2/00
Domestic Patent References:
| JP2006310014A | ||||
| JP2010049993A | ||||
| JP2011204442A | ||||
| JP2013175281A | ||||
| JP2012142119A | ||||
| JP2012004195A | ||||
| JP2014204078A | ||||
| JP2013254877A | ||||
| JP2007250275A |
Attorney, Agent or Firm:
Masayuki Masabayashi
Tetsuo Shiba
Hayashi Ichiyoshi
Tetsuo Shiba
Hayashi Ichiyoshi