Title:
RADIO WAVE-REFLECTING PLATE
Document Type and Number:
WIPO Patent Application WO/2022/176737
Kind Code:
A1
Abstract:
The purpose of the present embodiment is to provide a radio wave-reflecting plate in which permittivity changes stay within a certain range even if there are changes in the outside air temperature. The radio wave-reflecting plate of the present embodiment comprises: a first substrate having a first base material and a plurality of patch electrodes arranged in a matrix configuration at equal intervals along each of a first direction and a second direction; a second substrate having a second base material and a common electrode that faces the plurality of patch electrodes; a liquid crystal layer sandwiched between the first substrate and second substrate; a heat exchanger provided in contact with the second substrate; a temperature sensor that detects the temperature of the liquid crystal layer; and a temperature control unit that controls the heat exchanger on the basis of the temperature detected by the temperature sensor. Incident waves are incident on an incident surface of the first substrate, and the heat exchanger is provided on the surface on the reverse side from the incident surface.
Inventors:
OKA SHINICHIRO (JP)
OKITA MITSUTAKA (JP)
SUZUKI DAIICHI (JP)
ARAKI SHIGESUMI (JP)
OKITA MITSUTAKA (JP)
SUZUKI DAIICHI (JP)
ARAKI SHIGESUMI (JP)
Application Number:
PCT/JP2022/005131
Publication Date:
August 25, 2022
Filing Date:
February 09, 2022
Export Citation:
Assignee:
JAPAN DISPLAY INC (JP)
International Classes:
H01Q15/14; G02F1/13
Domestic Patent References:
| WO2017065088A1 | 2017-04-20 | |||
| WO2017065255A1 | 2017-04-20 |
Foreign References:
| JP2008147763A | 2008-06-26 | |||
| JP2020053759A | 2020-04-02 | |||
| JP2001264750A | 2001-09-26 |
Attorney, Agent or Firm:
S & S INTERNATIONAL PPC (JP)
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