Driver circuit for light-emitting component

US10785841B2 · kind B2 · utility

Assignee

• Osram OLED GMBH · DE

Inventors

• Andreas Wojcik · Solms, DE
• Hubert Halbritter · Dietfurt, DE
• Josip Maric · Sinzing, DE

Key dates

• Filing date: Aug 30, 2017
• Grant date: Sep 22, 2020
• Expiry date: Aug 30, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4031
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A driver circuit for at least one light-emitting optoelectronic component includes a control circuit having a capacitor and a control switch, wherein the control switch electrically connects to the component such that the component is supplied with current by the capacitor as a function of a switching state of the control switch, and a charging circuit having at least a first charging switch, a bias resistor and a buffer capacitor, wherein the charging circuit electrically connects to the capacitor and is configured to charge the capacitor through the bias resistor, and the buffer capacitor is linked to a connecting line between the bias resistor and the capacitor.