DISTANCE MEASUREMENT DEVICE AND METHOD, AND FLEXIBLE DISPLAY DEVICE

WIPO Patent Application WO/2019/000422

A1

A distance measurement device (30), a distance measurement method, and a flexible display device. The distance measurement device (30) is used for measuring a distance between a first stretch structure (10) and a second stretch structure (20). The first stretch structure (10) comprises a magnetic guide rail (101). The distance measurement device (30) comprises N coils (311, 312, ... , 31N). A first coil (311) is fixedly wound around the second stretch structure (20). The first coil (311) can be any one of the N coils (311, 312, ... , 31N), wherein N is a positive integer greater than or equal to 2. The distance measurement device (30) is used for detecting an electromotive force at two ends of the first coil (311). When an absolute value of the electromotive force at the two ends of the first coil (311) is the highest value among the N coils (311, 312, ..., 31N), the distance between the first stretch structure (10) and the second stretch structure (20) is determined according to the position in which the first coil (311) is fixed on the second stretch structure (20). The distance measurement device (30) reduces power consumption during measurement of a stretch or contraction distance of a flexible display device and improves measurement accuracy.

XIA XINYUAN (CN)
YANG JINHUI (CN)

PCT/CN2017/091239

January 03, 2019

June 30, 2017

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SHENZHEN ROYOLE TECHNOLOGIES CO LTD (CN)

G01B7/14; G09F9/00

CN203824512U	2014-09-10
CN201383268Y	2010-01-13
CN104517529A	2015-04-15
CN102519349A	2012-06-27
CN104700762A	2015-06-10
CN205403691U	2016-07-27
JP2013238516A	2013-11-28

SCIHEAD IP LAW FIRM (CN)

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