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1. WO2012062066 - ALTERNATING CURRENT-DRIVEN LED LIGHT EMITTING DEVICE

Publication Number WO/2012/062066
Publication Date 18.05.2012
International Application No. PCT/CN2011/071439
International Filing Date 02.03.2011
Chapter 2 Demand Filed 28.05.2012
IPC
F21V 23/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
23Arrangement of electric circuit elements in or on lighting devices
H01L 33/50 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48characterised by the semiconductor body packages
50Wavelength conversion elements
F21Y 101/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
101Point-like light sources
02Miniature, e.g. light emitting diodes (LED)
CPC
H01L 33/502
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
33Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
48characterised by the semiconductor body packages
50Wavelength conversion elements
501characterised by the materials, e.g. binder
502Wavelength conversion materials
H05B 45/37
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
45Circuit arrangements for operating light emitting diodes [LED]
30Driver circuits
37Converter circuits
Applicants
  • 四川新力光源股份有限公司 SICHUAN SUNFOR LIGHT CO., LTD [CN]/[CN] (AllExceptUS)
  • 中国科学院长春应用化学研究所 CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY, CHINESE ACADEMY OF SCIENCES [CN]/[CN] (AllExceptUS)
  • 张洪杰 ZHANG, Hongjie [CN]/[CN] (UsOnly)
  • 张明 ZHANG, Ming [CN]/[CN] (UsOnly)
  • 李成宇 LI, Chengyu [CN]/[CN] (UsOnly)
  • 赵昆 ZHAO, Kun [CN]/[CN] (UsOnly)
  • 李东明 LI, Dongming [CN]/[CN] (UsOnly)
  • 张立 ZHANG, Li [CN]/[CN] (UsOnly)
Inventors
  • 张洪杰 ZHANG, Hongjie
  • 张明 ZHANG, Ming
  • 李成宇 LI, Chengyu
  • 赵昆 ZHAO, Kun
  • 李东明 LI, Dongming
  • 张立 ZHANG, Li
Agents
  • 成都虹桥专利事务所 CHENGDU HONGQIAO PATENT LAW OFFICE
Priority Data
201010537835.209.11.2010CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ALTERNATING CURRENT-DRIVEN LED LIGHT EMITTING DEVICE
(FR) DISPOSITIF PHOTO-ÉMETTEUR À DEL EXCITÉ PAR COURANT ALTERNATIF
(ZH) 一种交流LED发光装置
Abstract
(EN)
An LED light emitting unit comprises an LED chip (2) and a light-emitting material (1) emitting light excited by the LED chip (2). The usage life of the light-emitting material is 1-100 milliseconds; the LED chip (2) is a single PN node LED chip; the LED light emitting unit is driven by an alternating-current with a frequency not lager than 100 Hz. An alternating current-driven LED light emitting device comprises the LED light emitting unit. The LED light emitting device avoids using an alternating current-driven LED chip integrated by multiple micro crystal grains, thus realizing a modest fluctuation of the brightness in the alternating-current period, simple production, and low cost, and solving the stroboscopic problem caused by the alternating-current power supply and the heat radiating problem caused by micro chip integration.
(FR)
L'invention concerne une unité photo-émettrice à DEL comprenant une puce DEL (2) et un matériau photo-émetteur (1) qui émet de la lumière sous l'effet de l'excitation par la puce DEL (2). La durée de vie du matériau photo-émetteur est comprise entre 1 et 100 millisecondes; la puce DEL (2) ne comprend qu'une jonction PN unique; l'unité photo-émettrice à DEL est excitée par un courant alternatif dont la fréquence ne dépasse pas 100 Hz. Un dispositif photo-émetteur à DEL excité par un courant alternatif renferme l'unité photo-émettrice à DEL. Le dispositif photo-émetteur à DEL permet de se dispenser de la présence d'une puce DEL excitée par courant alternatif et intégrant de multiple micro-grains cristallins, et par conséquent, de limiter les variations de luminance dans la période de courant alternatif, favorise une production aisée et à faible coût, et permet de résoudre les problèmes de l'effet stroboscopique résultant de l'alimentation par courant alternatif, et du rayonnement thermique provoqué par l'intégration de la micro-puce.
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