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    • 31. 发明专利
    • Solder-base electrode
    • 焊接电极
    • JPS61141155A
    • 1986-06-28
    • JP26275984
    • 1984-12-14
    • Hitachi Ltd
    • MORI TAKAOMIZUISHI KENICHIONOZATO AKIMASAYUKI FUMIOIMAI KUNINORI
    • H01L21/60H01L21/92
    • H01L2224/11H01L2224/13099H01L2924/01022H01L2924/01024H01L2924/01079H01L2924/01082H01L2924/014H01L2924/10329H01L2924/00012
    • PURPOSE:To contrive accomplishment of high reliability of a solder electrode part as well as to enable to perform a compound semiconductor process in a clean atmosphere by a method wherein the Ni having the high mechanical coupling a strength for solder material and thermally stable property is used as the base material. CONSTITUTION:The electrode structure, consisting of Cr or Ti as the first layer (adhesive layer) 104, Ni as the second layer of intermediate metal layer 105, and Au as the third layer (anti-oxidation layer) 106 as the third layer, is optimum as the base electrode for solder. When the GaAs LSI flip chip manufactured by adopting the above-mentioned structure is adhered to a ceramic wiring substrate, an SiO2 protective film 203 is formed on the GaAS LSI chip 201, and then a contact hole is formed on a chip-side wiring layer 202. Subsequently, a Cr or Ti layer 204, an Ni layer 205 and an Au layer 206 are successively vapor-deposited, and a solder-base electrode is formed. Then, after the electrode is formed into the prescribed shape by performing a photoetching, a Pb/Sn continuous vapor-deposition is conducted through a metal vapor- deposition mask, and a solder layer is formed.
    • 目的:为了实现焊接电极部件的高可靠性,以及能够通过其中使用具有高机械耦合的Ni具有焊料材料的强度和热稳定性能的方法在清洁的气氛中进行化合物半导体工艺 作为基材。 构成:由作为第一层(粘合剂层)的Cr或Ti,作为中间金属层105的第二层的Ni和作为第三层的第三层(抗氧化层)106的Au构成的电极结构, 作为焊料的基极是最佳的。 当采用上述结构制造的GaAs LSI倒装芯片被粘附到陶瓷布线基板上时,在GaAS LSI芯片201上形成SiO 2保护膜203,然后在芯片侧布线层 随后,依次气相沉积Cr或Ti层204,Ni层205和Au层206,形成焊料基电极。 然后,通过进行光刻,在电极形成规定形状之后,通过金属蒸镀掩模进行Pb / Sn连续气相沉积,形成焊料层。
    • 32. 发明专利
    • Semiconductor laser device
    • 半导体激光器件
    • JPS59210686A
    • 1984-11-29
    • JP7849684
    • 1984-04-20
    • Hitachi Ltd
    • DOI KOUNENHIRAO MOTONAONAKAMURA MICHIHARUTSUJI SHINJIMORI TAKAO
    • H01L21/208H01S5/00H01S5/227
    • H01S5/227H01S5/2275
    • PURPOSE:To remove a crystal defect induced in a buried layer being in contact with a buffer layer in a laser device, and to manufacture a laser having excellent reproducibility by forming the buried layer in a crystal growth layer of a four-element composition. CONSTITUTION:A buffer layer 2, an active layer 3, a clad layer 4 and a cap layer 5 are grown on a semiconductor substrate 1 in succession through a slide epitaxial method. When forming the each layer 2-5, the composition of a solution is brought close to that of InP, and a grating constant matching with InP is used. Each layer 2-5 is formed as an InP buffer layer 2 in predetermined thickness, an active layer 3 of a four-element composition, an InP clad layer 4 and a cap layer 5 of the four-element composition by the composition of the solution, the layer 3 shall be of In0.74Ga0.26As0.57P0.43, and the layer 4 shall be of In0.84 Ga0.16As0.36P0.64. A first In0.99Ga0.01As0.02P0.98 buried layer 6, an N type InP second buried layer 7 and an In0.74Ga0.26As0.57P0.43 cap layer 8 are shaped through mesa etching, and crystal defects induced in the layers 6, 7 are prevented.
    • 目的:去除在与激光装置中的缓冲层接触的掩埋层中感应的晶体缺陷,并且通过在四元素组成的晶体生长层中形成掩埋层来制造具有优异再现性的激光。 构成:缓冲层2,有源层3,覆盖层4和覆盖层5通过滑动外延法连续生长在半导体衬底1上。 当形成每个层2-5时,溶液的组成接近于InP的组成,并且使用与InP匹配的光栅常数。 每个层2-5通过溶液的组成形成为具有预定厚度的InP缓冲层2,四元素组合物的有源层3,四元素组合物的InP包覆层4和覆盖层5 ,层3应为In 0.74Ga0.26As0.57P0.43,第4层应为In 0.84 Ga 0.16 As 0.36 P 0.64。 第一In0.99Ga0.01As0.02P0.98掩埋层6,N型InP第二掩埋层7和In0.74Ga0.26As0.57P0.43覆盖层8通过台面蚀刻成形,并且在层中引起晶体缺陷 6,7。
    • 33. 发明专利
    • SEMICONDUCTOR LASER DEVICE
    • JPS5887890A
    • 1983-05-25
    • JP18540781
    • 1981-11-20
    • HITACHI LTD
    • TSUJI SHINJINAKAYAMA YOSHINORIHIRAO MOTONAOMORI TAKAOMIZUISHI KENICHINAKAMURA MICHIHARU
    • H01S5/00H01S5/026H01S5/062H01S5/227
    • PURPOSE:To prevent the breakdown of an end surface which leads to a decisive destruction of an element, by forming a pnpn structure inside crystals in parallel to a beam-emitting part, and by providing a gate electrode outside the element so that a current flowing to the beam-emitting part can be controlled by a thyristor operation. CONSTITUTION:Ga1-xAlxAs 22 forming a first clad layer, GaAs 1 forming an active layer, and Ga1-yAlyAs 21 forming a second clad layer are superposed sequentially on an n type GaAs substrate 4. Next, a p type Ga1-zAlzAs layer 32 and an n type Ga1-z, Alz, As layer 31 are superposed on both sides of a stripe-shaped semiconductor laminate region. Then, a region 7 of diffused impurity, such as Zn, is formed by a well- known method. A pnpn structure is constituted by these two layers, the GaAs substrate and the p type diffused region 7, including a buried region. By using a well-known method of diffusin or ion implantation, a p region 8 is formed so as to reach the p type GaAlAs layer 32, a gate electrode 9 is provided in addition to usual electrodes 5 and 6, and thereby an element of the present invention is obtained. In this element, a trigger current is made to flow to the gate electrode 9 to put the part of the pnpn structure in an ON state, and thereby a current flowing through the active region 1 can be restricted.
    • 38. 发明专利
    • THREE-DIMENSIONAL LAMINATION DEVICE
    • JPH03220762A
    • 1991-09-27
    • JP1492690
    • 1990-01-26
    • HITACHI LTD
    • MORI TAKAOKATO TAKESHIFUJITA YUJIMIZUISHI KENICHI
    • H05K1/18H01L27/00
    • PURPOSE:To sharply shorten the wiring length while reducing an area of a wiring region by a method wherein elements on a board are signal-connected to elements on another board through terminals located on an inner edge of an opening part formed on the board. CONSTITUTION:A part of the boards 101 and 201 mounted with chips 104 and 204 is provided with an opening and wiring connection between the chips 104 and 204 on the upper and lower boards 101 and 201 is performed through this opening part. That is, the chips 104 and 204 mounted on the different boards 101 and 201 are mutually connected by the wiring layers 102, 202 formed on the respective boards 101, 201 and a lead terminal provided on the inner edge of the board opening part. The chips 104, 204 on the upper layer are made to connect to the chips 104, 204 of the lower layer located directly under the adjacent opening parts. Thereby, direct wiring between the chips 104, 204 on the upper and lower boards 101, 201 becomes possible not through leader wirings to the periphery of the boards 101 and 201 thus to enable the length of wiring and the area of a wiring region to be reduced.
    • 40. 发明专利
    • SEMICONDUCTOR DEVICE AND ITS MANUFACTURE
    • JPS63186457A
    • 1988-08-02
    • JP1717087
    • 1987-01-29
    • HITACHI LTD
    • MORI TAKAOONOZATO AKIMASAMIZUISHI KENICHI
    • H01L25/18H01L21/768H01L23/522H01L25/065H01L25/07H01L27/00H05K1/14
    • PURPOSE:To obtain a lamination-type semiconductor device wherein the area of an integrated circuit substrate occupied by a wiring region can be reduced, the total module can be miniaturized, and the high speed quality can be improved, by laminating a plurality of semiconductor integrated circuit substrates having a three-dimensional structure wherein wiring patterns for electric connection are formed on the surface, the rear, and the side surface. CONSTITUTION:A semiconductor integrated circuit substrate 10 has a three dimensional structure wherein wiring patterns 13 for electric connection are formed on the surface, the rear and the side surface. A plurality of the substrates are laminated, and wiring connection between each of the substrates 10 is made via the above-mentioned wiring patterns 13. For example, a computer module is constituted by stacking the integrated circuit substrates 10 of wafer scale. The central part of the substrate 10 is assigned to an active element region 11 constituted of memories and logic gates. These integrat ed circuit substrates 10 are stacked in 10-200 stages to realize a computer system. The wiring connection between the substrates 10 is made by mutually connecting the wiring layers 13 formed on the surface, the side surface, and the rear via soldering electrodes 14. Supporting bodies 15 are inserted between the substrates in order to prevent the deformation of the soldering electrodes 14.