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    • 4. 发明授权
    • Semiconductor light emitting device
    • 半导体发光器件
    • US07075116B2
    • 2006-07-11
    • US10764514
    • 2004-01-27
    • Tadahiro Okazaki
    • Tadahiro Okazaki
    • H01L33/00
    • H01L33/504H01L2224/48091H01L2224/48247H01L2924/00014
    • An ultraviolet ray emitting element, a blue color converting layer containing a blue color light emitting fluorescent material that is excited by ultraviolet rays and emits blue light, a green color converting layer as the same and a red color converting layer as the same are prepared, and the blue color converting layer, the green color converting layer and the red color converting layer are stacked on the ultraviolet ray emitting element in this order. Consequently, it is possible to easily obtain white light that has high color rendering properties. In order to obtain white color that exerts high color rendering properties, the average particle sizes of the fluorescent materials are preferably made greater in the order of the blue color light emitting fluorescent material, the green color light emitting fluorescent material and the red color light emitting fluorescent material.
    • 制备紫外线发射元件,包含由紫外线激发并发出蓝光的蓝色发光荧光材料的蓝色转换层,与其相同的绿色转换层和红色转换层, 并且蓝色转换层,绿色转换层和红色转换层依次堆叠在紫外线发射元件上。 因此,可以容易地获得具有高显色性能的白光。 为了获得发挥高显色特性的白色,荧光材料的平均粒径优选按蓝色发光荧光材料,绿色发光荧光材料和红色发光的顺序更大 荧光材料。
    • 7. 发明申请
    • Semiconductor Light Emitting Element
    • US20090026468A1
    • 2009-01-29
    • US12224524
    • 2007-02-22
    • Mitsuhiko SakaiTadahiro OkazakiKen Nakahara
    • Mitsuhiko SakaiTadahiro OkazakiKen Nakahara
    • H01L33/00
    • H01L33/22H01L33/20H01L33/32
    • In a semiconductor light emitting element, a p-type layer (220), an active layer (230) and an n-type layer (240) are laminated on a substrate in this order. The n-type layer (240) is formed with a rectangular n-side electrode (241) whose width in one direction is equal to that of the n-type layer (240). The thickness t of the n-type layer (240) satisfies Formula 1 below. The semiconductor light emitting element includes a side surface (270) extending in the lamination direction and formed with a plurality of projections (271). Supposing that the wavelength of the light from the active-layer (230) is λ and the index of refraction of the n-type layer (240) or the p-type layer (220) is n, the average WA of widths at bottoms of the projections is set to satisfy WA≧λ/n. t ≥ ρ   J 0  e 4  γκ B  T · W  ( L - W ) Formula   1 where L is width of the n-type layer in a direction different from the one direction, T is absolute temperature, W is width of the n-side electrode in a direction different from the one direction, J0 is current density at the contact portion between the n-side electrode and the n-type layer, e is elementary charge, γ is diode ideality factor, κB is Boltzmann constant, ρ is specific resistance of the n-type semiconductor layer.
    • 8. 发明授权
    • Semiconductor light emitting element
    • 半导体发光元件
    • US07781791B2
    • 2010-08-24
    • US12224524
    • 2007-02-22
    • Mitsuhiko SakaiTadahiro OkazakiKen Nakahara
    • Mitsuhiko SakaiTadahiro OkazakiKen Nakahara
    • H01L33/00
    • H01L33/22H01L33/20H01L33/32
    • In a semiconductor light emitting element, a p-type layer (220), an active layer (230) and an n-type layer (240) are laminated on a substrate in this order. The n-type layer (240) is formed with a rectangular n-side electrode (241) whose width in one direction is equal to that of the n-type layer (240). The thickness t of the n-type layer (240) satisfies Formula 1 below. The semiconductor light emitting element includes a side surface (270) extending in the lamination direction and formed with a plurality of projections (271). Supposing that the wavelength of the light from the active-layer (230) is λ and the index of refraction of the n-type layer (240) or the p-type layer (220) is n, the average WA of widths at bottoms of the projections is set to satisfy WA≧λ/n. t ≥ ρ ⁢ ⁢ J 0 ⁢ e 4 ⁢ γκ B ⁢ T · W ⁡ ( L - W ) Formula ⁢ ⁢ 1 where L is width of the n-type layer in a direction different from the one direction, T is absolute temperature, W is width of the n-side electrode in a direction different from the one direction, J0 is current density at the contact portion between the n-side electrode and the n-type layer, e is elementary charge, γ is diode ideality factor, κB is Boltzmann constant, ρ is specific resistance of the n-type semiconductor layer.
    • 在半导体发光元件中,依次层叠基板上的p型层(220),有源层(230)和n型层(240)。 n型层(240)形成有一个方向的宽度与n型层(240)的宽度相等的矩形n侧电极(241)。 n型层(240)的厚度t满足下式1。 半导体发光元件包括在层叠方向上延伸并形成有多个突起(271)的侧表面(270)。 假设来自有源层(230)的光的波长为λ,并且n型层(240)或p型层(220)的折射率为n,底部宽度的平均WA 的投影设定为满足WA≥λ/ n。 t≥&rgr; ≠J 0 e4γ&kgr; B T·W⁡(L-W)公式1其中L是与一个方向不同的方向的n型层的宽度,T是绝对温度,W是n侧电极的宽度 方向不同于一个方向,J0是n侧电极和n型层之间的接触部分处的电流密度,e是基本电荷,γ是二极管理想因子,kgr; B是玻尔兹曼常数,&rgr; 是n型半导体层的电阻率。
    • 10. 发明授权
    • Semiconductor light-emitting device having a reflective case
    • 具有反射壳体的半导体发光器件
    • US06670648B2
    • 2003-12-30
    • US10196205
    • 2002-07-17
    • Shinji IsokawaTadahiro Okazaki
    • Shinji IsokawaTadahiro Okazaki
    • H01L2922
    • H01L33/60H01L33/486H01L2224/48091H01L2224/48227H01L2933/0091H01L2924/00014
    • A semiconductor light-emitting device has a semiconductor light-emitting element 3 mounted on an electrode 2 formed on a surface of an insulating substrate 1, and has a reflective case 5 provided on the insulating substrate 1 so as to reflect the light from the light-emitting element 3, with the space inside the reflective case 5 sealed with a translucent resin 6. The reflective case 5 has a grained portion 51 formed over at least part of the surface thereof over which it makes contact with the translucent resin 6. This effectively prevents the translucent resin from coming off the reflective case. To enable the semiconductor light-emitting device to emit light with more even intensity in all directions, the grained portion is formed, preferably, at least in the portions of the reflective case 5 that face the side surfaces of the semiconductor light-emitting element.
    • 半导体发光装置具有安装在形成于绝缘基板1的表面上的电极2上的半导体发光元件3,并且具有设置在绝缘基板1上的反射壳体5,以反射来自光的光 发光元件3,其中反射壳体5内的空间用半透明树脂6密封。反射壳体5具有在其与透光性树脂6接触的表面的至少一部分上形成的纹理部分51。 有效地防止半透明树脂从反射壳体脱落。 为了使半导体发光元件能够在各个方向上均匀地发光,最好至少在反射壳体5的面对半导体发光元件的侧面的部分形成纹理部分。