Lead frame which includes a die pad, a support lead, and inner leads
    1.
    发明授权
    Lead frame which includes a die pad, a support lead, and inner leads 有权
    引线框架,其包括管芯焊盘,支撑引线和内部引线

    公开(公告)号:US06501156B1

    公开(公告)日:2002-12-31

    申请号:US09657484

    申请日:2000-09-08

    IPC分类号: H01L2312

    摘要: A lead frame includes a die pad including a die pad main portion having a large thickness and a die pad peripheral portion having an intermediate thickness smaller than that of the die pad main portion, provided on at least one side of the die pad main portion, at least one support lead connected to the die pad, and at least two first inner leads having a small thickness smaller than that of the die pad peripheral portion, arranged such that end portions thereof are opposed to the die pad peripheral portion. The thick die pad provides good heat release properties, and reducing the thickness of the leads allows fine pitched leads to be produced. Such a lead frame can be manufactured easily by press stamping after belt-shaped regions having different thickness are formed by rolling.

    摘要翻译: 引线框架包括:芯片焊盘,其包括具有大厚度的管芯焊盘主体部分和设置在管芯焊盘主体部分的至少一侧上的中间厚度小于管芯焊盘主体部分的中间厚度的焊盘周边部分; 连接到管芯焊盘的至少一个支撑引线,以及至少两个第一内部引线,其小于管芯焊盘周边部分的厚度的小的第一内部引线,其布置成使其端部与管芯焊盘周边部分相对。 厚芯片提供良好的散热性能,并且减小引线的厚度可以产生精细的引线。 通过轧制形成具有不同厚度的带状区域之后,可以通过冲压加工容易地制造这种引线框架。

    Optoelectronic device
    2.
    发明授权
    Optoelectronic device 有权
    光电器件

    公开(公告)号:US07064898B1

    公开(公告)日:2006-06-20

    申请号:US10129809

    申请日:2000-11-08

    IPC分类号: G02B5/18 G02B27/44

    摘要: An optoelectronic device that provides an excellent reproduction signal and a stable servo control while preventing deterioration of S/N ratio caused by stray light. The optoelectronic device has a semiconductor laser (101) that emits light beams on an information-recording medium (105), a hologram optical element (102) having a diffraction grating region (108) and located between the semiconductor laser (101) and the information-recording medium (105), and a photodetector (106) for receiving light that is diffracted at the diffraction grating region (108) of the hologram optical element (102), among returning light beams from the information-recording medium (105), and the optoelectronic device has also a diffraction grating region (107) in the vicinity of the diffraction grating region (108) of the hologram optical element (102) so as to prevent stray light other than diffracted light from the diffraction grating region (108) from entering the photodetector (106).

    摘要翻译: 提供优异的再现信号和稳定的伺服控制的光电子器件,同时防止由杂散光引起的S / N比的劣化。 该光电子器件具有在信息记录介质(105)上发射光束的半导体激光器(101),具有衍射光栅区域(108)并且位于半导体激光器(101)和 信息记录介质(105)和用于接收在全息图光学元件(102)的衍射光栅区域(108)处衍射的光的光电检测器(106),在从信息记录介质(105)返回的光束中, ,并且光电子器件在全息光学元件(102)的衍射光栅区域(108)附近还具有衍射光栅区域(107),以防止来自衍射光栅区域(108)的衍射光以外的杂散光 )进入光电检测器(106)。

    Optical electronic apparatus and method for producing the same
    4.
    发明授权
    Optical electronic apparatus and method for producing the same 失效
    光电子装置及其制造方法

    公开(公告)号:US06680491B2

    公开(公告)日:2004-01-20

    申请号:US10193173

    申请日:2002-07-12

    IPC分类号: H01L3300

    摘要: An optoelectronic apparatus includes an optoelectronic device, a mounting portion, a frame member surrounding a periphery of the mounting portion, and an optical component. The optical component is placed on an optical component placement portion. The frame member includes a pair of first side walls and a pair of second side walls. Each of the pair of second side walls has a recessed portion and a protruded portion. The optical component is disposed between the protruded portions, and is fixed with an adhesive filled in the recessed portions.

    摘要翻译: 光电子器件包括光电子器件,安装部分,围绕安装部分周围的框架部件和光学部件。 光学部件被放置在光学部件放置部分上。 框架构件包括一对第一侧壁和一对第二侧壁。 一对第二侧壁中的每一个具有凹部和突出部。 光学部件设置在突出部之间,并且用填充在凹部中的粘合剂固定。

    Optical device with diffraction grating having plural grating regions
    6.
    发明授权
    Optical device with diffraction grating having plural grating regions 失效
    具有衍射光栅的光学器件具有多个光栅区域

    公开(公告)号:US06728035B2

    公开(公告)日:2004-04-27

    申请号:US10251471

    申请日:2002-09-20

    IPC分类号: G02B518

    摘要: An optical device includes a light-emitting element for irradiating light onto an information recording medium, a diffraction grating for splitting light emitted from said light-emitting element into a plurality of beams, a focussing member for focussing the plurality of beams onto the information recording medium, a deflection member for deflecting the plurality of beams after they have been reflected from the information recording medium; and a photodetector for receiving the plurality of beams after they have been deflected by the deflection member. The diffraction grating has a first grating region and a second grating region, which have different diffraction efficiencies. The zero-order diffraction light in the first grating region is used as the main beam for reproducing the information signal, and the +1-order or −1-order diffraction light in the second grating regions is used as sub-beams for reproduction of the tracking error signal. Thus, the light amount of both the main beam and the sub-beams can be increased without increasing the light emission of the semiconductor laser element 1, and the S/N ratio of the main beam and the sub-beams can be enhanced.

    摘要翻译: 光学装置包括用于将光照射到信息记录介质上的发光元件,用于将从所述发光元件发射的光分解为多个光束的衍射光栅,用于将多个光束聚焦到信息记录上的聚焦部件 介质,用于在已经从信息记录介质反射之后偏转多个光束的偏转构件; 以及用于在被偏转构件偏转之后接收多个光束的光电检测器。 衍射光栅具有第一光栅区域和第二光栅区域,其具有不同的衍射效率。 将第一光栅区域中的零级衍射光用作再现信息信号的主光束,并且将第二光栅区域中的+ 1级或-1级衍射光用作用于再现 跟踪误差信号。 因此,在不增加半导体激光元件1的发光的同时,可以增加主光束和子光束的光量,并且可以提高主光束和子光束的S / N比。

    Semiconductor light-emitting unit, optical apparatus and optical disk system having heat sinking means and a heating element incorporated with the mounting system
    7.
    发明授权
    Semiconductor light-emitting unit, optical apparatus and optical disk system having heat sinking means and a heating element incorporated with the mounting system 失效
    具有散热装置的半导体发光单元,光学装置和光盘系统以及与安装系统结合的加热元件

    公开(公告)号:US06534794B1

    公开(公告)日:2003-03-18

    申请号:US09633234

    申请日:2000-08-04

    IPC分类号: H01L2715

    摘要: A semiconductor light-emitting unit includes: a semiconductor laser diode; a photodetector functioning as a sub-mount for mounting the diode thereon; and a heating member, incorporated with the photodetector, for heating the diode. If the ambient temperature of the diode falls within a range where kinks are possibly caused in the low-temperature I-L characteristic of the diode, then current is supplied to the heating member, thereby heating the diode. The heating member may be either a doped region defined within a semiconductor substrate or a doped polysilicon film formed on the substrate. Also, the heating member is preferably located under the laser diode with a heat-dissipating layer and an insulating layer interposed therebetween. The semiconductor light-emitting unit with this structure can effectively eliminate kinks from the low-temperature I-L characteristic of the semiconductor laser diode.

    摘要翻译: 半导体发光单元包括:半导体激光二极管; 用作将二极管安装在其上的子安装座的光电检测器; 以及加热构件,其结合有光电检测器,用于加热二极管。 如果二极管的环境温度落在二极管的低温I-L特性中可能引起扭结的范围内,则向加热部件供电,从而加热二极管。 加热构件可以是限定在半导体衬底内的掺杂区域或形成在衬底上的掺杂多晶硅膜。 此外,加热部件优选位于激光二极管的下方,散热层和介于其间的绝缘层。 具有这种结构的半导体发光单元可以有效地消除半导体激光二极管的低温I-L特性的扭结。

    Semiconductor laser device and optical pickup head
    8.
    发明授权
    Semiconductor laser device and optical pickup head 失效
    半导体激光装置和光学头

    公开(公告)号:US5748658A

    公开(公告)日:1998-05-05

    申请号:US789199

    申请日:1997-01-24

    摘要: A semiconductor laser device comprising a first lead having a chip mounting part provided at the front end, at least one second lead separated from the first lead, a semiconductor laser element mounted on the chip mounting part, connecting means for electrically connecting the electrode of the semiconductor laser element and at least one second lead, and a frame body made of insulating material disposed so as to surround the semiconductor laser device and connecting means, and fixed to the first lead and second lead. In this semiconductor laser device, transparent resin is not used for sealing, and hence deterioration of light exit characteristic does not occur. Besides, because of the structure of fixing the leads to the frame body, it is rigid and excellent in reliability, and a multiplicity can be manufactured at once, so that it is easy to manufacture and is excellent in mass producibility.

    摘要翻译: 一种半导体激光装置,包括:第一引线,其具有设置在前端的芯片安装部,与第一引线分离的至少一个第二引线,安装在芯片安装部上的半导体激光元件,用于将 半导体激光元件和至少一个第二引线,以及由围绕半导体激光器件和连接装置设置并被固定到第一引线和第二引线的绝缘材料制成的框体。 在该半导体激光装置中,透明树脂不用于密封,因此不会发生光射出特性的劣化。 此外,由于将引线固定在框架体上的结构,其刚性和可靠性优异,并且可以一次性制造多个,从而易于制造并且具有优异的批量生产能力。

    Optical device with diffraction grating having plural grating regions
    9.
    发明授权
    Optical device with diffraction grating having plural grating regions 失效
    具有衍射光栅的光学器件具有多个光栅区域

    公开(公告)号:US06501601B1

    公开(公告)日:2002-12-31

    申请号:US09557711

    申请日:2000-04-25

    IPC分类号: G02B518

    摘要: An optical device includes a light-emitting element for irradiating light onto an information recording medium, a diffraction grating for splitting light emitted from said light-emitting element into a plurality of beams, a focussing member for focussing the plurality of beams onto the information recording medium, a deflection member for deflecting the plurality of beams after they have been reflected from the information recording medium; and a photodetector for receiving the plurality of beams after they have been deflected by the deflection member. The diffraction grating has a first grating region and a second grating region, which have different diffraction efficiencies. The zero-order diffraction light in the first grating region is used as the main beam for reproducing the information signal, and the +1-order or −1-order diffraction light in the second grating regions is used as sub-beams for reproduction of the tracking error signal. Thus, the light amount of both the main beam and the sub-beams can be increased without increasing the light emission of the semiconductor laser element 1, and the S/N ratio of the main beam and the sub-beams can be enhanced.

    摘要翻译: 光学装置包括用于将光照射到信息记录介质上的发光元件,用于将从所述发光元件发射的光分解成多个光束的衍射光栅,用于将多个光束聚焦到信息记录上的聚焦部件 介质,用于在已经从信息记录介质反射之后偏转多个光束的偏转构件; 以及用于在被偏转构件偏转之后接收多个光束的光电检测器。 衍射光栅具有第一光栅区域和第二光栅区域,其具有不同的衍射效率。 将第一光栅区域中的零级衍射光用作再现信息信号的主光束,并且将第二光栅区域中的+ 1级或-1级衍射光用作用于再现 跟踪误差信号。 因此,在不增加半导体激光元件1的发光的同时,可以增加主光束和子光束的光量,并且可以提高主光束和子光束的S / N比。

    Diffraction element and optical pick-up assembly
    10.
    发明授权
    Diffraction element and optical pick-up assembly 失效
    衍射元件和光学拾取组件

    公开(公告)号:US5481524A

    公开(公告)日:1996-01-02

    申请号:US11311

    申请日:1993-01-29

    IPC分类号: G02B5/18 G11B7/09 G11B7/135

    CPC分类号: G11B7/1353 G11B7/0903

    摘要: A diffraction element includes a diffraction grating for dividing a light beam, emitted from a light source along a predetermined path, into a principal light beam and at least two auxiliary light beams, and a hologram for separating the beam, which has been reflected from an optical information recording medium, from the predetermined path. The diffraction grating and the hologram are integrated together by being formed in alignment with each other in opposite portions of a block of glass or plastics. A slide is provided at at least a portion of the diffraction element and includes a peripheral wall in sliding engagement with a cylindrical surface coaxial with an optical axis of the diffraction element to permit the diffraction element to be rotatable about the optical axis.

    摘要翻译: 衍射元件包括用于将从光源沿着预定路径发射的光束分成主光束和至少两个辅助光束的衍射光栅和用于分离已经从 光学信息记录介质。 衍射光栅和全息图通过在玻璃或塑料块的相对部分彼此对准地形成在一起。 在衍射元件的至少一部分处设置有滑动件,并且包括与与衍射元件的光轴同轴的圆柱形表面滑动接合的周壁,以允许衍射元件围绕光轴旋转。