Invention Grant
- Patent Title: Hybrid driving scheme for RGB color tuning
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Application No.: US16543230Application Date: 2019-08-16
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Publication No.: US11140758B2Publication Date: 2021-10-05
- Inventor: Yifeng Qiu , John Grant
- Applicant: Lumileds LLC
- Applicant Address: US CA San Jose
- Assignee: Lumileds LLC
- Current Assignee: Lumileds LLC
- Current Assignee Address: US CA San Jose
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H05B45/20
- IPC: H05B45/20 ; H05B45/46 ; H05B45/395 ; H05B45/37 ; H05B45/24

Abstract:
A device includes an analog current division circuit configured to divide an input current into a first current and a second current, and a multiplexer array including a plurality of switches to provide the first current to a first of three colors of LEDs and the second current to a second of three colors of LEDs simultaneously during a first portion of a period, the first current to the second of three colors of LEDs and the second current to a third of three colors of LEDs simultaneously during a second portion of the period, and the first current to the first of three colors of LEDs and the second current to the third of three colors of LEDs simultaneously during a third portion of the period.
Public/Granted literature
- US10806000B2 Hybrid driving scheme for RGB color tuning Public/Granted day:2020-10-13
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