Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY APPARATUS, AND INFORMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/199741
Kind Code:
A1
Abstract:
An optical sheet 43 is built into a liquid crystal display device in which a plurality of light sources 42 are dispersedly provided on the back surface side of a display screen. One surface of the optical sheet 43 has an uneven shape. In a predetermined region R of the one surface of the optical sheet 43, a luminance-enhancing member 25 for enhancing the total light transmittance of the predetermined region R is provided so that recesses 22a in the uneven shape are at least partially filled.

Inventors:
TSAI CHENGHENG (JP)
Application Number:
PCT/JP2021/005710
Publication Date:
October 07, 2021
Filing Date:
February 16, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KEIWA INC (JP)
International Classes:
G02B5/02; F21S2/00; F21V5/00; F21V5/02; F21V9/14; G02F1/13357; F21Y105/10; F21Y115/10; F21Y115/30
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Download PDF: