- 专利标题: Driving light emitting diodes and display apparatus
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申请号: US16445349申请日: 2019-06-19
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公开(公告)号: US10939525B2公开(公告)日: 2021-03-02
- 发明人: Rajkumar Sengodan , Vigneshwaran Kalaimani
- 申请人: GOODRICH LIGHTING SYSTEMS, INC.
- 申请人地址: US FL Oldsmar
- 专利权人: GOODRICH LIGHTING SYSTEMS, INC.
- 当前专利权人: GOODRICH LIGHTING SYSTEMS, INC.
- 当前专利权人地址: US FL Oldsmar
- 代理机构: Cantor Colburn LLP
- 优先权: IN201911015618 20190418
- 主分类号: H05B45/37
- IPC分类号: H05B45/37 ; H05B33/00 ; H05B45/10 ; H05B45/48 ; H05B45/50
摘要:
Systems and methods for light emitting diodes (LEDs) circuits are provided. Aspects include a set of light emitting diodes (LEDs) arranged in series between a first node and a second node, a power supply coupled to the first node, a first switching element arranged in series between the first node and a third node, wherein the first switching element is in parallel with the set of LEDs, a first charge pump coupled to the third node, a controller configured to operate the first switching element by providing a control voltage for switching the first switching element between an ON and an OFF, wherein the control voltage comprises a switching frequency, and wherein the first charge pump is charged by the power supply responsive to the switching element being in an ON state.
公开/授权文献
- US20200337125A1 DRIVING LIGHT EMITTING DIODES AND DISPLAY APPARATUS 公开/授权日:2020-10-22
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