The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2021
Filed:
Feb. 18, 2020
Hideep Inc., Gyeonggi-do, KR;
Seyeob Kim, Gyeonggi-do, KR;
Bonkee Kim, Gyeonggi-do, KR;
Sangsic Yoon, Gyeonggi-do, KR;
Young ho Cho, Gyeonggi-do, KR;
HIDEEP INC., Gyeonggi-Do, KR;
Abstract
A smartphone may include a first cover layer and an LCD panel. A backlight unit may be located under the LCD panel. A touch sensor may sense touch in a capacitive manner. The backlight unit may include a pressure sensor and a spacer layer. The pressure sensor includes a plurality of electrodes formed in a single layer attached on the second cover layer and spaced apart from the reflective sheet. A driving signal is applied to the touch sensor and a touch position is detected by a sensing signal. A magnitude of a touch pressure is detected based on a change amount of capacitance which is output from the pressure sensor and which is changed according to a distance between the pressure sensor and an electrode located within the LCD panel. The pressure sensor is attached on the second cover layer as an integral sheet including insulation layers.