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Patent Searching and Data


Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/176461
Kind Code:
A1
Abstract:
The purpose of the present invention is to improve the visibility on a display device at low cost. The display device is provided on equipment having a storage space inside, the display device including a window, a lightguide plate, a light source, and a control unit. The window is made of a light-transmissive material, thus allowing the storage space to be seen from outside the equipment. The lightguide plate is laminated on the window and made of a light-transmissive material. The light source emits light from the end face of the lightguide plate toward the inside of the lightguide plate. A control unit controls the light source. The lightguide plate includes a plurality of prisms. The plurality of prisms presents a given pattern on the surface of the lightguide plate by reflecting light from the light source. The control unit controls the light source to change the presentation of the given pattern.

Inventors:
TANOUE YASUHIRO (JP)
NIHEI ISAO (JP)
KAKINUMA TAKESHI (JP)
SHINOHARA MASAYUKI (JP)
KITAMURA NORIKAZU (JP)
Application Number:
PCT/JP2019/005929
Publication Date:
September 19, 2019
Filing Date:
February 18, 2019
Export Citation:
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Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
G09F9/302; D06F34/32; D06F39/12; F24C15/00; G09F9/46; D06F34/30
Domestic Patent References:
WO2017098868A12017-06-15
Foreign References:
DE102006053906A12008-05-21
US20090121970A12009-05-14
CN102051789A2011-05-11
US20110261518A12011-10-27
JP2011239800A2011-12-01
JPS4810920B11973-04-09
JP2006184881A2006-07-13
Attorney, Agent or Firm:
YAMASHITA, Takuji (JP)
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