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    • 35. 发明申请
    • LIGHT EMITTING DEVICE AND METHOD FOR FABRICATING THE SAME
    • 发光装置及其制造方法
    • US20110175131A1
    • 2011-07-21
    • US13076330
    • 2011-03-30
    • Won Cheol SEOYun Goo KIMChang Youn KIM
    • Won Cheol SEOYun Goo KIMChang Youn KIM
    • H01L33/00
    • H01L33/0079H01L33/387H01L33/46H01L33/60H01L33/62H01L2924/0002H01L2924/00
    • There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.
    • 提供一种发光器件,其包括包括第一导电半导体层,有源层和第二导电半导体层的化合物半导体层; 形成在所述第二导电半导体层的区域上的金属反射层; 至少形成在所述第二导电半导体层的边界区域中的绝缘结构; 形成为覆盖形成有金属反射层和绝缘结构的第二导电半导体层的金属材料结构体; 以及与所述金属材料结构接合的基板,其中所述第二导电半导体层的边界区域沿着所述第二导电半导体层的外周包括所述第二导电半导体层的外部区域。
    • 39. 发明申请
    • LIGHT-EMITTING DIODE DRIVER
    • 发光二极管驱动器
    • US20100244727A1
    • 2010-09-30
    • US12704881
    • 2010-02-12
    • Kyung Hee YEHyun Gu KangDae Sung KalWon Cheol Seo
    • Kyung Hee YEHyun Gu KangDae Sung KalWon Cheol Seo
    • H05B37/02
    • H05B33/0809
    • A light-emitting diode (LED) driver used to power at least one LED with an alternating current (AC) voltage source is provided. The LED driver includes a rectifying unit applying N-fold higher voltage than the voltage from the AC voltage source to the LED. The rectifying unit includes a first charging unit to charge a first voltage, and a second charging unit to charge a second voltage. The first voltage includes the voltage at the AC voltage source during a first half-cycle of one AC voltage cycle, and the second voltage includes the first voltage and the voltage at the AC voltage source during the second half-cycle of the AC voltage cycle. Accordingly, the LED driver may improve light-emitting efficiency and reduce flicker of LEDs.
    • 提供了用于为交流(AC)电压源至少一个LED供电的发光二极管(LED)驱动器。 LED驱动器包括整流单元,其施加比来自AC电压源的电压高出N倍的电压。 整流单元包括对第一电压充电的第一充电单元和用于对第二电压充电的第二充电单元。 第一电压包括在一个交流电压周期的第一个半周期期间的交流电压源处的电压,并且第二电压在交流电压周期的第二个半周期期间包括第一电压和交流电压源处的电压 。 因此,LED驱动器可以提高发光效率并减少LED的闪烁。