Title:
上用光拡散シート及びバックライトユニット
Document Type and Number:
Japanese Patent JP6647761
Kind Code:
B2
Abstract:
A light diffusion sheet for overlaying is to be provided on a front face side of a prism sheet in a backlight unit of a liquid crystal display device, and has a substrate layer and a light diffusion layer overlaid on a front face side of the substrate layer, in which the light diffusion layer contains a resin matrix and resin beads dispersed in the resin matrix, wherein: a mode diameter in a volume-weighted particle size distribution of the resin beads is no less than 2.5 [mu]m and no greater than 5.5 [mu]m; a density of the resin beads per unit area is no less than 9,000 beads/mm2 and no greater than 24,000 beads/mm2; and an average thickness of the light diffusion layer is no less than 2 [mu]m and no greater than 9 [mu]m.
Inventors:
Tadayuki Nonaka
Application Number:
JP2016228738A
Publication Date:
February 14, 2020
Filing Date:
November 25, 2016
Export Citation:
Assignee:
Keiwa Co., Ltd.
International Classes:
G02B5/02; B32B7/023; B32B27/20; F21S2/00; F21V3/06; G02F1/13357
Domestic Patent References:
| JP2002370302A | ||||
| JP10300908A | ||||
| JP2002196109A | ||||
| JP2008071758A | ||||
| JP2007155936A | ||||
| JP2009175676A | ||||
| JP2009157323A | ||||
| JP2014500983A | ||||
| JP2007512573A |
Foreign References:
| WO2005093468A1 |
Attorney, Agent or Firm:
Hajime Amano
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka
Yoshinori Ikeda
Hiroshi Ogawa
Koji Ishida
Kenichi Fujinaka