Title:
COMPOSITE SUBSTRATE FOR ELECTRO-OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/235496
Kind Code:
A1
Abstract:
Provided is a composite substrate with which it is possible to realize an electro-optical element of very thin profile, in which: peeling is prominently inhibited; and when configured as an electro-optical element, light propagation loss is reduced, high-speed and low-voltage driving is made possible, and excellent reliability can be maintained even in extreme high-temperature environments. This composite substrate (100) for an electro-optical element according to an embodiment has, in the sequence listed, an electro-optical crystal substrate (10) having an electro-optical effect, a first high-dielectric-constant layer (21), a second high-dielectric-constant layer (22), and a support substrate (30). The first high-dielectric-constant layer (21) and the second high-dielectric-constant layer (22) are directly bonded to each other, and an amorphous layer (40) is formed at the bonding interface between the high-dielectric-constant layer (21) and the second high-dielectric-constant layer (22).
Inventors:
HATTORI RYOSUKE (JP)
TAI TOMOYOSHI (JP)
ASAI KEIICHIRO (JP)
KONDO JUNGO (JP)
TAI TOMOYOSHI (JP)
ASAI KEIICHIRO (JP)
KONDO JUNGO (JP)
Application Number:
PCT/JP2021/019037
Publication Date:
November 25, 2021
Filing Date:
May 19, 2021
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
International Classes:
B32B15/04; G02F1/03
Domestic Patent References:
| WO2019224908A1 | 2019-11-28 | |||
| WO2014077212A1 | 2014-05-22 | |||
| WO2019071978A1 | 2019-04-18 | |||
| WO2018031916A1 | 2018-02-15 |
Foreign References:
| JP2017139720A | 2017-08-10 | |||
| JP2010211241A | 2010-09-24 | |||
| JP6646187B1 | 2020-02-14 | |||
| US20200013765A1 | 2020-01-09 | |||
| JP2018117030A | 2018-07-26 | |||
| JP2012161831A | 2012-08-30 | |||
| JP2002040381A | 2002-02-06 | |||
| JP2019217530A | 2019-12-26 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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