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:
Nov. 26, 2024
Filed:
Oct. 31, 2022
Himax Technologies Limited, Tainan, TW;
Jia-Ming He, Tainan, TW;
Yaw-Guang Chang, Tainan, TW;
HIMAX TECHNOLOGIES LIMITED, Tainan, TW;
Abstract
Circuit for performing a display driving function and a fingerprint and touch detecting function includes a unity gain buffer amplifier, an operational amplifier integrator, an ADC circuit, and a digital processing circuit coupled to the ADC circuit. An input terminal of the operational amplifier integrator is coupled to a touch sensor. When the circuit is operated under a display driving mode, an input terminal of the unity gain buffer amplifier receives a gray level voltage and an output terminal of the unity gain buffer amplifier is coupled to a display panel. When the circuit is operated under a fingerprint detecting mode, the input terminal and the output terminal of the unity gain buffer amplifier are respectively coupled to a fingerprint sensor and the ADC circuit. When the circuit is operated under a touch detecting mode, an output terminal of the operational amplifier integrator is coupled to the ADC circuit.