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:
Sep. 13, 2022
Filed:
Feb. 07, 2018
Boe Technology Group Co., Ltd., Beijing, CN;
Hefei Boe Optoelectronics Technology Co., Ltd., Anhui, CN;
Beijing BOE Technology Development Co., Ltd., Beijing, CN;
Hefei BOE Optoelectronics Technology Co., Ltd., Anhui, CN;
Abstract
A touch display device includes a display panel; a backlight that includes a back plate; a pressure touch detection chip; a pressure sensing layer and a voltage reference layer arranged between the display panel and the back plate, the pressure sensing layer and the voltage reference layer are opposite to each other and arranged in different layers. The pressure sensing layer includes a plurality of sensing electrodes arranged as an array, where each sensing electrode is electrically connected to the pressure touch detection chip through a lead wire. The voltage reference layer is configured to receive a stable reference voltage signal; and the pressure touch detection chip is configured to determine a value of a pressure on the display panel according to a detected change of capacitance between the pressure sensing layer and the voltage reference layer.