公开(公告)号：US20210087761A1

公开(公告)日：2021-03-25

申请号：US16664036

申请日：2019-10-25

Applicant: INITECH Co., LTD. ,  KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY

Inventor： Young Hun JEONG ,  Young Jun PARK ,  Min Seon LEE ,  Yong Hyeon NA

IPC: E01F9/608 ,  E01F9/588 ,  F03D9/25 ,  H02N2/18

Abstract: A self-powered delineator includes a wind-powered rotatable module; a first piezoelectric energy generator module for generating electrical energy; a second piezoelectric energy generator module for generating electrical energy; and a light-emitter. The wind-powered rotatable module includes one or more first magnets spacedly arranged around a rotation shaft. The first piezoelectric energy generator module includes one or more first piezoelectric elements, and one or more second magnets disposed on the at least one first piezoelectric element. The second piezoelectric energy generator module includes at least one elastic base extending radially from a fixed shaft in a cantilever manner; and at least one second piezoelectric element on the at least one elastic base.

公开(公告)号：US20180254403A1

公开(公告)日：2018-09-06

申请号：US15895530

申请日：2018-02-13

Applicant: KOREA INSTITUTE OF CERAMIC ENGINEERING AND TECHNOLOGY

Inventor： Young Hun JEONG ,  Jeong Ho CHO ,  Jong Hoo PAIK ,  Min Seon LEE

IPC: H01L41/047 ,  H01L41/083 ,  H01L41/273 ,  H04R17/00

CPC classification number: H01L41/0471 ,  H01L41/083 ,  H01L41/273 ,  H04R17/005

Abstract: An interdigitated electrode patterned multi-layered piezoelectric laminate structure is provided, which comprises: N vertically stacked piezoelectric stacks (N is the integer of 2 or above); wherein the each piezoelectric stack comprises: a piezoelectric sheet; a top electrode pattern on a top of the piezoelectric sheet; and a bottom electrode pattern on a bottom of the piezoelectric sheet, wherein each of the top and bottom electrode patterns has first and second sub-electrode patterns, wherein the first and second sub-electrode patterns are electrically insulated from each other, wherein the first and second sub-electrode patterns are horizontally interdigitated with each other, wherein the first sub-electrode patterns of the top and bottom electrode patterns vertically overlap with each other, wherein the second sub-electrode patterns of the top and bottom electrode patterns vertically overlap with each other, wherein the bottom electrode of the Nth piezoelectric stack is the top electrode of the N-1th piezoelectric stack.