Invention Grant
- Patent Title: Display device
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Application No.: US15839903Application Date: 2017-12-13
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Publication No.: US10725593B2Publication Date: 2020-07-28
- Inventor: Ken Hirabayashi
- Applicant: Japan Display Inc.
- Applicant Address: JP Minato-ku
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Minato-ku
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5618de00
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G02F1/1333 ; G06F3/041 ; H01L27/32 ; H01L51/52 ; G02F1/1343 ; G09F9/30 ; G09F9/00

Abstract:
The display device includes: a cover glass including a screen that can be pressed; a liquid crystal panel arranged on a back side of the cover glass in a thickness direction (Z direction); a drive electrode arranged in a region corresponding to the screen in the liquid crystal panel; a base electrode arranged in the region corresponding to the screen at a position spaced apart from the drive electrode on the back side in the thickness direction; a cushion layer arranged between the liquid crystal panel and the base electrode; and a circuit that detects an electric signal representing the amount of change in capacitance between the drive electrode and the base electrode as a signal which enables calculation of a pressing force of the press. The cushion layer has such a characteristic that an elastic modulus decreases as approaching a periphery from a center in the region corresponding to the screen.
Public/Granted literature
- US20180164923A1 DISPLAY DEVICE Public/Granted day:2018-06-14
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