Title:
光学シート、映像源ユニット、及び液晶表示装置
Document Type and Number:
Japanese Patent JP6922220
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an optical sheet which can enhance the front transmittance and improve the utilization efficiency of the light.SOLUTION: An optical sheet includes: a plurality of light transmission parts 33 which have the prescribed cross section, extend in the one direction and have the interval in the direction different from the extension direction; and a light adsorption part 34 which is formed between the plurality of light transmission parts. At least one of the interfaces of the light transmission parts and the light adsorption part has the shape of the recess with respect to the light adsorption part. The recess is formed so that the intersection point between the first straight line and the second straight line, or the intersection point between the first tangential line and the second tangential line exists at a position on the other end side with respect to 50% of the thickness of the light adsorption part at the cross section in the thickness direction.SELECTED DRAWING: Figure 4
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Inventors:
Tsuyoshi Kashiwagi
Application Number:
JP2016256718A
Publication Date:
August 18, 2021
Filing Date:
December 28, 2016
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
G02B5/00; B32B3/30; B32B7/023; F21S2/00; G02F1/13357
Domestic Patent References:
| JP2006171701A | ||||
| JP2008096686A | ||||
| JP2011075768A | ||||
| JP2012212012A | ||||
| JP2014119738A |
Foreign References:
| US20100264818 | ||||
| WO2007148721A1 |
Attorney, Agent or Firm:
Noriyuki Yamamoto
Koji Yamamoto
Koji Yamamoto