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    • 6. 发明授权
    • Method for enhancing light extraction efficiency of light emitting diodes
    • 提高发光二极管光提取效率的方法
    • US08153455B2
    • 2012-04-10
    • US12697414
    • 2010-02-01
    • Ming-Teng KuoJang-Ho ChenChing-Hwa Chang Jean
    • Ming-Teng KuoJang-Ho ChenChing-Hwa Chang Jean
    • H01L21/00
    • H01L33/00
    • A method for enhancing light extraction efficiency of a light emitting diode is disclosed. The method includes the steps of providing a light emitting diode including in sequence a substrate, a first layer of a first conduction type, an active layer, and a second layer of a second conduction type opposite to the first conduction type; growing a number of protrusions on at least one layer selected from the first layer, the active layer, and the second layer of the light emitting diode to form a patterned oxide layer for protecting the light emitting diode from etch; controlling height of the protrusions to achieve a predetermined etching depth of the light emitting diode; dry etching through a portion of the light emitting diode which is not protected by the patterned oxide layer to form a plurality of depressions on the light emitting diode; and removing the oxide layer from the selected layer. The light emitting diode is patterned so that more light beams can be emitted. Therefore, light extraction efficiency is enhanced.
    • 公开了一种用于提高发光二极管的光提取效率的方法。 该方法包括以下步骤:提供发光二极管,依次包括衬底,第一导电类型的第一层,有源层和与第一导电类型相反的第二导电类型的第二层; 在选自发光二极管的第一层,有源层和第二层的至少一层上生长多个突起,以形成用于保护发光二极管免受蚀刻的图案化氧化物层; 控制突起的高度以实现发光二极管的预定蚀刻深度; 通过未被图案化氧化物层保护的一部分发光二极管进行干蚀刻,以在发光二极管上形成多个凹陷; 并从所选择的层去除氧化物层。 图案化发光二极管,使得可以发射更多的光束。 因此,光提取效率提高。
    • 8. 发明申请
    • LIGHT EMITTING DIODE ASSEMBLY HAVING IMPROVED LIGHTING EFFICIENCY
    • 具有改善照明效率的发光二极管组件
    • US20110198619A1
    • 2011-08-18
    • US12707993
    • 2010-02-18
    • Chung-I CHIANGHung-Yi LinHsien-Lung Ho
    • Chung-I CHIANGHung-Yi LinHsien-Lung Ho
    • H01L33/00
    • H01L25/0753H01L33/58H01L33/60H01L33/62H01L2924/0002H01L2924/00
    • A light emitting diode assembly is disclosed in the present invention. The light emitting diode assembly has a substrate and several light emitting diode units. It can also include several light emitting diode units fabricated on cavities formed in the substrate. Any light emitting diode unit is composed of a light emitting diode chip covered with a phosphor layer for providing light beams, and a reflecting unit installed or formed on the substrate, coated with a reflective film, surrounding the light emitting diode chip for reflecting the light beams emitted from the light emitting diode chip, and directing the light beams upward. The light emitting diode unit further includes a light condenser provided above the light emitting diode chip for guiding the light beams upward. The assembly can collect all light beams emitted laterally. Hence, lighting efficiency for the light emitting diode assembly can be improved.
    • 在本发明中公开了一种发光二极管组件。 发光二极管组件具有基板和几个发光二极管单元。 它还可以包括在衬底中形成的空腔上制造的几个发光二极管单元。 任何发光二极管单元由覆盖有用于提供光束的荧光体层的发光二极管芯片组成,反射单元安装或形成在基板上,涂覆有反射膜,围绕发光二极管芯片以反射光 从发光二极管芯片发射的光束,并将光束向上引导。 发光二极管单元还包括设置在发光二极管芯片上方的用于将光束向上引导的光聚光器。 组件可以收集横向发射的所有光束。 因此,可以提高发光二极管组件的照明效率。