摘要:
The object of the invention is to provide a light-emitting diode that is excellent in terms of thermal radiation properties and is capable of suppressing cracks in the substrate during joining and emitting light with high luminance by applying a high voltage, a light-emitting diode lamp, and a method of manufacturing a light-emitting diode. The above object is achieved by using a light-emitting diode (1) having a heatsink substrate (5) joined to a light-emitting portion (3) including a light-emitting layer (2), in which the heatsink substrate (5) is formed by alternately laminating a first metal layer (21) and a second metal layer (22); the first metal layer (21) has a thermal conductivity of 130 W/m·K or higher and is made of a material having a thermal expansion coefficient substantially similar to the thermal expansion coefficient of a material for the light-emitting portion (3); and the second metal layer (22) is made of a material having a thermal conductivity of 230 W/m·K or higher.
摘要:
A light emitting diode includes a substrate, a compound semiconductor layer including a light emitting layer formed on the substrate, a first electrode formed on an upper surface of the compound semiconductor layer, and a second electrode formed on the substrate or a semiconductor layer which is exposed by removing at least a portion of the compound semiconductor layer. The first electrode includes a wiring electrode provided on the compound semiconductor layer in contact therewith, an ohmic electrode provided on the compound semiconductor layer in contact therewith, a translucent electrode formed over the compound semiconductor layer to cover the wiring electrode and the ohmic electrode, and a bonding pad electrode connected to the wiring electrode, at least a portion of the bonding pad electrode being exposed from an opening of the translucent electrode to the exterior.
摘要:
Disclosed is a light-emitting diode, which has a red and infrared emitting wavelength, excellent monochromatism characteristics, and high output and high efficiency and excellent humidity resistance. The light-emitting diode is provided with: a light-emitting section, which includes an active layer having a quantum well structure and formed by laminating alternately a well layer which comprises a composition expressed by the composition formula of (AlX1 Ga1-X1) As (0≦X1≦1) and a barrier layer which comprises a composition expressed by the composition formula of (AlX2 Ga1-X2) As (0
摘要翻译:公开了一种发光二极管,其具有红色和红外发射波长,优异的单色特性,高输出和高效率以及优异的耐湿性。 发光二极管设置有:发光部,其包括具有量子阱结构的有源层,并且交替地层叠由包含由(AlX 1 Ga 1-X1)As的组成式表示的组成的阱层 (0 @ X1 @ 1)和阻挡层,其包含由组成式表示的组成式(AlX 2 Ga 1 -X 2)As(0 <2),以及第一覆盖层和第二覆盖层,两者之间 其中所述有源层被夹持,其中所述第一覆盖层和所述第二覆盖层包含由组成式表示的组成式(AlX 3 Ga 1-x)Y1 In1-Y1 P(0≤X3≤1,0
摘要:
A compound semiconductor light-emitting diode includes a light-emitting layer (133) formed of aluminum-gallium-indium phosphide, a light-emitting part (13) having component layers individually formed of a Group III-V compound semiconductor, a transparent supporting layer (14) bonded to one of the outermost surface layers (135) of the light-emitting part (13) and transparent to the light emitted from the light-emitting layer (133), and a bonding layer (141) formed between the supporting layer (14) and the one of the outermost surface layers (135) of the light-emitting part (13) containing oxygen atoms at a concentration of 1×1020 cm−3 or less.
摘要:
The object of the present invention is to provide a metal substrate for a light-emitting diode having excellent chemical resistance, a light-emitting diode, and a method for manufacturing the light-emitting diode, and the present invention provides a metal substrate for a light-emitting diode including a metal substrate, a compound semiconductor layer having a light-emitting portion, which is joined over the metal substrate via a junction layer, wherein the metal substrate for a light-emitting diode includes a metal plate and a metal protective film which covers at least an upper surface and a lower surface of the metal plate.
摘要:
A light-emitting diode having a high output, high efficiency, and a long service life under a high-humidity environment is provided. The light-emitting diode (1) includes a compound semiconductor layer (2) having a light-emitting section (7), ohmic electrodes (4, 5) provided on the main light extraction surface of the compound semiconductor layer (2), and an electrode protection layer (6) for protecting the ohmic electrodes (4, 5), wherein the Al concentrations of the surfaces (2a, 2b) of the compound semiconductor layer (2), which include the main light extraction surface, are 20% or less and the As concentration of the surfaces (2a, 2b) is less than 1%, and the electrode protection layer (6) has a two-layer structure composed of a first protective film (12) provided so as to cover the ohmic electrodes (4, 5) and a second protective film (13) provided so as to cover at least an end portion of the first protective film (12).
摘要:
A transparent-substrate light-emitting diode (10) has a light-emitting layer (133) made of a compound semiconductor, wherein the area (A) of a light-extracting surface having formed thereon a first electrode (15) and a second electrode (16) differing in polarity from the first electrode (15), the area (B) of a light-emitting layer (133) formed as approximating to the light-extracting surface and the area (C) of the back surface of a light-emitting diode falling on the side opposite the side for forming the first electrode (15) and the second electrode (16) are so related as to satisfy the relation of A>C>B. The light-emitting diode (10) of this invention, owing to the relation of the area of the light-emitting layer (133) and the area of the back surface (23) of the transparent substrate and the optimization of the shape of a side face of the transparent substrate (14), exhibits high brightness and high exoergic property never attained heretofore and fits use with an electric current of high degree.
摘要:
A pn-junction compound semiconductor light-emitting device is provided, which comprises a stacked structure including a light-emitting layer composed of an n-type or a p-type aluminum gallium indium phosphide and a light-permeable substrate for supporting the stacked structure, and the stacked structure and the light-permeable substrate being joined together, wherein the stacked structure includes an n-type or a p-type conductor layer, the conductor layer and the substrate are joined together, and the conductor layer is composed of a Group III-V compound semiconductor containing boron.
摘要:
A semiconductor light-emitting device includes a semiconductor substrate that has a rear surface formed with a first electrode, a semiconductor layer that includes a light-emitting portion and is formed on the semiconductor substrate, a plurality of dispersed electrodes that are individually formed on a part of the surface of the semiconductor layer to make ohmic contact with the semiconductor layer, a transparent conductive film that covers the surface of the semiconductor layer and the dispersed electrodes to electrically conduct with the dispersed electrodes, and a pad electrode that is formed on a part of the surface of the transparent conductive film to electrically conduct with the transparent conductive film.
摘要:
The present invention relates to an epitaxial wafer for a light-emitting diode wherein the peak emission wavelength is 655 nm or more, and it is possible to improve reliability. The epitaxial wafer for light-emitting diodes includes a GaAs substrate (1) and a pn-junction type light-emitting unit (2) provided on the GaAs substrate (1), wherein light-emitting unit (2) is formed as a multilayer structure in which a strained light-emitting layer and a barrier layer are alternately stacked, and the composition formula of the barrier layer is (AlXGa1-X)YIn1-YP (0.3≦X≦0.7, 0.51≦Y≦0.54).