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:
Jan. 07, 2025
Filed:
Apr. 11, 2022
Seoul National University R&db Foundation, Seoul, KR;
Seoul National University R&DB Foundation, Seoul, KR;
Abstract
A semiconductor device includes a signal conversion circuit configured to convert a sensing current provided from a sensing element into a sensing voltage; an analog-to-digital converter (ADC) configured to convert the sensing voltage to a digital value; and a driving circuit configured to drive a light emitting element, wherein the ADC generates a digital value corresponding to proximity to an object by performing a primary operation comparing a ramp signal varying with time and the sensing voltage while the light emitting element is not driven and a secondary operation comparing the ramp signal and the sensing voltage while the light emitting element is driven.