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Title:
HEAD-UP DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/093079
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a head-up display device which is capable of achieving satisfactory display luminance and satisfactory concealability for the inside at the same time. A head-up display device (100) according to the present invention comprises: a display (10) which comprises a display cell (11) and a polarizing plate (12) with a first retardation layer, and which emits projection light, said polarizing plate (12) being on the emission side of the display cell (11) and sequentially containing a polarizer and a first retardation layer from the display cell side; at least one reflector (20) which reflects the projection light; a case (30) which has an opening (32) and internally contains the display (10) and the reflector (20); a cover member (40) which covers the opening (32); and a polarizing plate (50) with a second retardation layer, which is provided on the case interior side of the cover member (40) and sequentially contains a polarizer and a second retardation layer from the cover member side. The in-plane retardations Re(550) of the first retardation layer and the second retardation layer are from 100 nm to 200 nm, respectively.

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Inventors:
ASANOI YOSHIAKI (JP)
FUCHIDA TAKEHITO (JP)
TAKADA KATSUNORI (JP)
Application Number:
PCT/JP2018/038450
Publication Date:
May 16, 2019
Filing Date:
October 16, 2018
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B27/01; B60K35/00
Domestic Patent References:
WO2017094248A12017-06-08
WO2001037007A12001-05-25
Foreign References:
JP2008070504A2008-03-27
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Other References:
See also references of EP 3709070A4
YUTAKA HOSODA: "Theoretical Production Dye Chemistry Fifth Edition", 15 July 1968, GIHODO, pages: 135 - 152
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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