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Hybrid driving scheme for RGB color tuning

A color adjustment and hybrid driving technology, applied in the use of semiconductor lamps, electrical components, etc., can solve problems such as increasing the complexity of RGBLED driving solutions

Active Publication Date: 2021-11-26
LUMILEDS HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Adding additional LEDs and the requirement to power each LED within an RGB color adjustment adds to the complexity of driving schemes for RGB LEDs

Method used

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  • Hybrid driving scheme for RGB color tuning
  • Hybrid driving scheme for RGB color tuning
  • Hybrid driving scheme for RGB color tuning

Examples

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Embodiment Construction

[0031] Examples of various light illumination system and / or light emitting diode ("LED") implementations are described more fully hereinafter with reference to the accompanying drawings. These examples are not mutually exclusive, and features found in one example may be combined with features found in one or more other examples to achieve further embodiments. Accordingly, it will be understood that the examples shown in the drawings are provided for illustrative purposes only and that they are not intended to limit the present disclosure in any way. Like numbers refer to like elements throughout.

[0032] It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms can be used to distinguish one element from another. For example, a first element could be termed a second element and a second element could be termed a first element, without departing fr...

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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.

Description

[0001] priority claim [0002] This application claims the benefit of priority to U.S. Patent Application Serial No. 16 / 543230, filed August 16, 2019, which claims U.S. Patent Application Serial No. 16 / 258193, filed January 25, 2019 , and claims the benefit of European Patent Application Serial No. 19165527.3 filed March 27, 2019, each of which is hereby incorporated by reference in its entirety. Background technique [0003] A Light Emitting Diode (LED) is a semiconductor light source that emits light when electricity flows through it. When a suitable current is applied to the LED, electrons are able to recombine with electron-holes within the LED, releasing energy in the form of photons. This effect is called electroluminescence. The color of the emitted light corresponding to the photon energy is determined by the energy bandgap of the semiconductor. White light is achieved by using multiple semiconductors or a layer of wavelength converting material on top of a semicond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/20H05B45/325H05B47/155
CPCH05B45/20H05B45/325H05B45/46
Inventor 邱怡峰J·格兰特
Owner LUMILEDS HLDG BV
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