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Patent Searching and Data


Title:
CAPACITANCE DEVICE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/016764
Kind Code:
A1
Abstract:
Embodiments of the present application provide a capacitance device and a manufacturing method therefor. The capacitance device comprises at least one capacitor, wherein the at least one capacitor comprises at least one first dielectric layer and at least one second dielectric layer; the first dielectric layer has a positive voltage coefficient and the second dielectric layer has a negative voltage coefficient; and/or the first dielectric layer has a positive temperature coefficient and the second dielectric layer has a negative temperature coefficient. By using the principle of positive and negative cancellation, the voltage coefficient and/or the temperature coefficient of the at least one capacitor can be 0 or close to 0 when the at least one capacitor is taken as a whole. Therefore, when the bias or the temperature of the at least one capacitor is changed, the capacitance value of the capacitor is not changed or the change is small, thereby effectively guaranteeing the performance of the capacitance device.

Inventors:
LU BIN (CN)
SHEN JIAN (CN)
PI BO (CN)
Application Number:
PCT/CN2019/098020
Publication Date:
February 04, 2021
Filing Date:
July 26, 2019
Export Citation:
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Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
H01L27/04; H01L21/02
Foreign References:
CN109817607A2019-05-28
CN1992268A2007-07-04
CN108259040A2018-07-06
CN101673741A2010-03-17
JPH06204405A1994-07-22
Other References:
See also references of EP 3796383A4
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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