Patent · US Active

LED circuit and touch sensing method

US10860141B2 · kind B2 · utility

16Cited by

0References

9Claims

0Family size

Assignee

DYNASCAN TECHNOLOGY CORP. · TW

Inventors

Tsun-I Wang · Taoyuan, TW
Ching-Chun Wu · Taoyuan, TW
Chia-Liang Yang · Taoyuan, TW

Key dates

Filing date	Oct 5, 2019
Grant date	Dec 8, 2020
Priority date	—
Expiry date	Oct 5, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG09G2360/144
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention discloses a LED circuit and a touch sensing method. Said method, as applied to an array of LEDs, comprises the following steps. First, a driving signal is provided. The driving signal is configured to set at least one of the LEDs in a driven mode or a sensing mode. When a LED is set in the sensing mode, it receives an environmental light, whose intensity is then compared to a first threshold. When said intensity is below that threshold, the location corresponding to the LED is marked as a touch location.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.