Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIQUID CRYSTAL ILLUMINATION DEVICE, HEAD-UP DISPLAY, AND ILLUMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/116698
Kind Code:
A1
Abstract:
The present invention implements a high-efficiency and high-luminance liquid crystal panel. A liquid crystal illumination device comprises: a liquid crystal panel; a light source for irradiating the liquid crystal panel with light; a first diffuser part for diffusing the light emitted from the light source; a first light guide part having a reflection surface spreading radially from the light source side toward the liquid crystal panel side, and guiding the light diffused by the first diffuser part using the reflection surface whereby the light is reflected; a reflection mirror having an opening and reflecting a portion of light guided by the first light guide part so that the portion of light returns to the first light guide part while the other portions of light pass through the opening; a condenser part for focusing the light passing through the opening of the reflection mirror; and a second diffuser part for diffusing the light focused by the condenser part toward the liquid crystal panel. The opening in the reflection mirror is formed corresponding to the display region of the liquid crystal panel. The haze value of the first diffuser part is set at a value higher than the haze value of the second diffuser part.

Inventors:
KOBAYASHI Tatsuru (JVC KENWOOD Corporation 3-12, Moriyacho, Kanagawa-ku, Yokohama-sh, Kanagawa 22, 〒2210022, JP)
Application Number:
JP2018/037695
Publication Date:
June 20, 2019
Filing Date:
October 10, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
JVC KENWOOD CORPORATION (3-12, Moriyacho Kanagawa-ku, Yokohama-sh, Kanagawa 22, 〒2210022, JP)
International Classes:
G02F1/13357; B60K35/00; B60Q3/14; B60Q3/64; F21S2/00; G02B5/02; G02B17/08; G02B19/00; G02B27/01; G02F1/13; F21Y101/00; F21Y115/10; F21Y115/30
Foreign References:
JP2006107993A2006-04-20
JP2009150940A2009-07-09
JP2009003444A2009-01-08
JP2011221260A2011-11-04
JP2009109828A2009-05-21
JP2009003444A2009-01-08
JP2017239369A2017-12-14
Attorney, Agent or Firm:
IEIRI Takeshi (HIBIKI IP Law Firm, Asahi Bldg. 5th Floor 3-33-8, Tsuruya-cho, Kanagawa-ku, Yokohama-sh, Kanagawa 35, 〒2210835, JP)
Download PDF: