Patent · US Active

Data driver of a microLED display

US10290255B2 · kind B2 · utility

1Cited by

0References

15Claims

0Family size

Assignee

Prilit Optronics, Inc. · TW

Inventors

Biing-Seng Wu · New Taipei, TW
Fa-Ming Chen · Tainan, TW

Key dates

Filing date	Sep 19, 2017
Grant date	May 14, 2019
Priority date	—
Expiry date	Sep 19, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG09G2320/0276
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A data driver of a microLED display includes clock generators that generate pulse width modulation (PWM) clocks of corresponding primary colors respectively; counters that receive the PWM clocks of corresponding primary colors respectively and accordingly generate corresponding PWM signals; and comparators associated with corresponding data channels respectively for comparing a held data signal with the corresponding PWM signal, thereby generating a comparison result signal. In one embodiment, the data driver further includes switches configured to electrically short output nodes of channel amplifiers of corresponding primary colors respectively for testing uniformity of microLEDs of one color.

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