Optoelectronic device and adaptive illumination system using the same
US9974135B1 · kind B1 · utility
11Cited by
1References
20Claims
0Family size
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Key dates
| Filing date | Sep 8, 2017 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Sep 8, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is disclosed that includes a segmented light-emitting diode (LED) chip having a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs; apply a reverse bias to each of the second LEDs; and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.