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    • 3. 发明申请
    • Group III nitride-based compound semiconductor light-emitting device
    • III族氮化物系化合物半导体发光元件
    • US20080308833A1
    • 2008-12-18
    • US12153787
    • 2008-05-23
    • Miki MoriyamaKoichi GoshonooTaro HitosugiTetsuya Hasegawa
    • Miki MoriyamaKoichi GoshonooTaro HitosugiTetsuya Hasegawa
    • H01L33/00
    • H01L33/42H01L33/32H01L2933/0091
    • The refractive index of a titanium oxide layer is modified by adding an impurity (e.g., niobium (Nb)) thereto within a range where good electrical conductivity is obtained. The Group III nitride-based compound semiconductor light-emitting device of the invention includes a sapphire substrate, an aluminum nitride (AlN) buffer layer, an n-contact layer, an n-cladding layer, a multiple quantum well layer (emission wavelength: 470 nm), a p-cladding layer, and a p-contact layer. On the p-contact layer is provided a transparent electrode made of niobium titanium oxide and having an embossment. An electrode is provided on the n-contact layer. An electrode pad is provided on a portion of the transparent electrode. Since the transparent electrode is formed from titanium oxide containing 3% niobium, the refractive index with respect to light (wavelength: 470 nm) becomes almost equal to that of the p-contact layer. Thus, the total reflection at the interface between the p-contact layer and the transparent electrode can be avoided to the smallest possible extent. In addition, by virtue of the embossment, light extraction performance is increased by 30%.
    • 通过在获得良好的导电性的范围内添加杂质(例如铌(Nb))来改变氧化钛层的折射率。 本发明的III族氮化物系化合物半导体发光元件包括蓝宝石衬底,氮化铝(AlN)缓冲层,n接触层,n包层,多量子阱层(发射波长: 470nm),p包覆层和p接触层。 在p接触层上设置由氧化钛铌构成的透明电极,并具有压纹。 电极设置在n接触层上。 电极焊盘设置在透明电极的一部分上。 由于透明电极由含有3%铌的氧化钛形成,相对于光(波长:470nm)的折射率变得几乎等于p接触层的折射率。 因此,可以尽可能小的程度地避免p-接触层和透明电极之间的界面处的全反射。 此外,由于压花,光提取性能提高了30%。
    • 6. 发明授权
    • Light emitting element and light emitting device
    • 发光元件和发光元件
    • US08350284B2
    • 2013-01-08
    • US12585937
    • 2009-09-29
    • Miki MoriyamaKoichi Goshonoo
    • Miki MoriyamaKoichi Goshonoo
    • H01L33/00
    • H01L33/405H01L33/20H01L33/32H01L2224/73265
    • A light emitting element which emits light of a wavelength, includes a substrate which is transparent to the wavelength of emitted light and includes a first surface and a second surface; a semiconductor layer stacked on the first surface; a first electrode which is reflective to the wavelength of emitted light and formed on a surface of the semiconductor layer, wherein electrical resistance of the first electrode in a farthest distance is equal to or smaller than 1Ω; and a second electrode which is reflective to the wavelength of emitted light and formed on the second surface, wherein electrical resistance of the second electrode in a farthest distance is equal to or smaller than 1Ω.
    • 发射波长的光的发光元件包括对发射光的波长透明的基板,并且包括第一表面和第二表面; 堆叠在所述第一表面上的半导体层; 第一电极,其反射于所述发射光的波长并形成在所述半导体层的表面上,其中所述第一电极在最远距离处的电阻等于或小于1Ω。 以及第二电极,其对所发射的光的波长反射并形成在所述第二表面上,其中所述第二电极在最远距离处的电阻等于或小于1°。
    • 7. 发明申请
    • Light emitting element and light emitting device
    • 发光元件和发光元件
    • US20100078649A1
    • 2010-04-01
    • US12585937
    • 2009-09-29
    • Miki MoriyamaKoichi Goshonoo
    • Miki MoriyamaKoichi Goshonoo
    • H01L33/00
    • H01L33/405H01L33/20H01L33/32H01L2224/73265
    • A light emitting element which emits light of a wavelength, includes a substrate which is transparent to the wavelength of emitted light and includes a first surface and a second surface; a semiconductor layer stacked on the first surface; a first electrode which is reflective to the wavelength of emitted light and formed on a surface of the semiconductor layer, wherein electrical resistance of the first electrode in a farthest distance is equal to or smaller than 1Ω; and a second electrode which is reflective to the wavelength of emitted light and formed on the second surface, wherein electrical resistance of the second electrode in a farthest distance is equal to or smaller than 1Ω.
    • 发射波长的光的发光元件包括对发射光的波长透明的基板,并且包括第一表面和第二表面; 堆叠在所述第一表面上的半导体层; 第一电极,其反射于所述发射光的波长并形成在所述半导体层的表面上,其中所述第一电极在最远距离处的电阻等于或小于1Ω。 以及第二电极,其对所发射的光的波长反射并形成在所述第二表面上,其中所述第二电极在最远距离处的电阻等于或小于1°。
    • 8. 发明申请
    • Group III nitride semiconductor light-emitting device and production method therefor
    • III族氮化物半导体发光器件及其制造方法
    • US20090200563A1
    • 2009-08-13
    • US12320980
    • 2009-02-10
    • Koichi GoshonooMiki Moriyama
    • Koichi GoshonooMiki Moriyama
    • H01L33/00
    • H01L33/20H01L21/30617H01L33/32
    • Provided is a method for producing a Group III nitride semiconductor light-emitting device including a GaN substrate serving as a growth substrate, which method facilitates tapering of a bottom portion of the GaN substrate. In the production method, firstly, a Group III nitride semiconductor layer, an ITO electrode, a p-electrode, and an n-electrode are formed on the top surface of a GaN substrate through MOCVD. Thereafter, the GaN substrate is thinned through mechanical polishing of the bottom surface thereof, and then scratches formed by mechanical polishing are removed through chemical mechanical polishing, to thereby planarize the bottom surface. Subsequently, a mask is formed on the bottom surface of the GaN substrate, followed by wet etching with phosphoric acid. By virtue of anisotropy in etching of GaN with phosphoric acid, a tapered surface is exposed so as to be inclined by about 60° with respect to the GaN substrate.
    • 提供一种用于制造包括用作生长衬底的GaN衬底的III族氮化物半导体发光器件的方法,该方法有助于GaN衬底的底部的锥形化。 在制造方法中,首先,通过MOCVD在GaN基板的顶面上形成III族氮化物半导体层,ITO电极,p电极和n电极。 此后,通过机械抛光,通过机械抛光形成的GaN底板被机械抛光而减薄,然后通过化学机械抛光去除划痕,从而平坦化底面。 随后,在GaN衬底的底表面上形成掩模,然后用磷酸进行湿蚀刻。 由于利用磷酸蚀刻GaN的各向异性,使得锥形表面相对于GaN衬底倾斜约60°。
    • 9. 发明申请
    • Group III nitride-based compound semiconductor light-emitting device
    • III族氮化物系化合物半导体发光元件
    • US20090072267A1
    • 2009-03-19
    • US12232320
    • 2008-09-15
    • Koichi GoshonooMiki Moriyama
    • Koichi GoshonooMiki Moriyama
    • H01L33/00
    • H01L27/15
    • Provided is a GaN-based semiconductor light-emitting device which does not require an external constant-current circuit. The light-emitting device of the present invention includes a sapphire substrate; an AlN buffer layer formed on the substrate; and an HEMT structure formed on the buffer layer, the HEMT structure including a GaN layer and an Al0.2Ga0.8N layer. On the Al0.2Ga0.8N layer are sequentially formed an n-GaN layer, an MQW light-emitting layer including an InGaN well layer and an AlGaN barrier layer, and a p-GaN layer. A source electrode and an HEMT/LED connection electrode are formed on an exposed portion of the Al0.2Ga0.8N layer. The HEMT/LED connection electrode serves as both the corresponding drain electrode and an electrode for injecting electrons into the n-GaN layer. An ITO transparent electrode is formed on the top surface of the p-GaN layer, and a gold pad electrode is formed on a portion of the top surface of the transparent electrode.
    • 提供了不需要外部恒流电路的GaN系半导体发光装置。 本发明的发光装置包括:蓝宝石基板; 形成在所述基板上的AlN缓冲层; 以及形成在缓冲层上的HEMT结构,所述HEMT结构包括GaN层和Al0.2Ga0.8N层。 在Al0.2Ga0.8N层依次形成n-GaN层,包含InGaN阱层和AlGaN阻挡层的MQW发光层和p-GaN层。 源极和HEMT / LED连接电极形成在Al0.2Ga0.8N层的暴露部分上。 HEMT / LED连接电极用作相应的漏电极和用于将电子注入到n-GaN层中的电极。 在p-GaN层的顶表面上形成ITO透明电极,并且在透明电极的顶表面的一部分上形成金焊盘电极。