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1. 发明专利

JPH04342173A MANUFACTURE OF SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPH04342173A
公开(公告)日：1992-11-27
申请号：JP11458191
申请日：1991-05-20
申请人： HAMAMATSU PHOTONICS KK
发明人： YAMAGUCHI SEIJI , SHIMIZU HIROMITSU , MASUDA HIROSHI
IPC分类号： H01L31/10
摘要： PURPOSE:To improve a manufacturing method for a semiconductor device having photodiodes. CONSTITUTION:Concerning a manufacturing method for a semiconductor device having photoelectric receiving elements (photodiodes) whose photoelectric receiving regions are formed in a Si single crystal substrate, the oxygen density between lattices in the above-mentioned Si single crystal substrate is made to be 1.1X10 /cm to 1.3X10 /cm .

2. 发明专利

JPS6436087A IC PHOTODETECTOR FOR PHOTOCOUPLER 失效
公开(公告)号：JPS6436087A
公开(公告)日：1989-02-07
申请号：JP19237187
申请日：1987-07-31
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , SHIMIZU HIROMITSU
IPC分类号： H01L31/10 , H01L31/12 , H04B10/07 , H04B10/40 , H04B10/50 , H04B10/60 , H04B10/69
摘要： PURPOSE:To prevent a malfunction even when an optical input is intenser than normal operation by connecting at least one diode in parallel with a resistor and flowing photocurrents through the diode when a photodiode is given the intense optical input. CONSTITUTION:Since an intense optical input is transmitted over a photodiode PD, diodes D10, D11 are supplied with bias currents when the optical input exceeds the limit of the photocurrents of the photodiode PD. Since a level drop by the diodes D10, D11 at that time is brought to 2VBE, the bias level of the photodiode PD is brought to V1-2VBE. When V1-2VBE is exceeded over a GND level previously, a cathode for the photodiode PD is not negative-biassed even on the intense optical input, thus preventing a malfunction.

3. 发明专利

JP2003069004A Semiconductor photodetector and photoirradiation timing detector 审中-公开
标题翻译：半导体光电检测器和光电时钟检测器
公开(公告)号：JP2003069004A
公开(公告)日：2003-03-07
申请号：JP2001256733
申请日：2001-08-27
申请人： Hamamatsu Photonics Kk , 浜松ホトニクス株式会社
发明人： OIKAWA TOMOHIRO , TERADA YOSHITAKA , SHIMIZU HIROMITSU , MEGURI SHINTARO
IPC分类号： B41J2/44 , H01L27/146 , H01L31/10 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a photodetector which can perform precise timing detection and to provide a photoirradiation timing detector using the photodetector.
SOLUTION: A first photosensitive region PD1, a second photosensitive region PD2 and a third photosensitive region PD3 are arranged in this order in the scanning direction of a laser beam, i.e., the X-direction. The boundary line BL12 between the region PD1 and the region PD2 is at right angles to the X-direction, and the boundary line BL23 between the region PD2 and the region PD3 is crossed obliquely in the X-direction. The region PD1 and the region PD2 are electrically connected inside the same semiconductor substrate via a connection region PD13, and its output amounts to the sum of outputs from the regions PD1, PD3. The photoirradiation timing detector can be mounted on a color laser-beam printer or the like.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种可以执行精确的定时检测并且使用该光电检测器来提供光照射定时检测器的光电检测器。解决方案：在激光束的扫描方向，即X方向上，依次布置第一光敏区域PD1，第二感光区域PD2和第三感光区域PD3。区域PD1与区域PD2之间的边界线BL12与X方向成直角，区域PD2与区域PD3之间的边界线BL23在X方向上斜交。区域PD1和区域PD2经由连接区域PD13电连接在同一半导体衬底的内部，并且其输出量等于来自区域PD1，PD3的输出的总和。光照射定时检测器可以安装在彩色激光束打印机等上。

4. 发明专利

JPH01212914A SIGNAL PROCESSING CIRCUIT 失效
公开(公告)号：JPH01212914A
公开(公告)日：1989-08-25
申请号：JP3840088
申请日：1988-02-19
申请人： HAMAMATSU PHOTONICS KK
发明人： KYOMASU MIKIO , SHIMIZU HIROMITSU , YAMADA KOZO
IPC分类号： H01L31/12 , H03K5/01 , H03K5/1252 , H03K17/78
摘要： PURPOSE:To detect an object even when the time of an open signal is very short by outputting a signal representing the object detecting state when an interruption signal obtained from a photodetection section of an optical modulation type photo interrupter is inputted consecutively for n-time and returning an output signal into the non-detection state when the open signal is inputted from the photodetection section. CONSTITUTION:When two objects are accessed to a degree of in contact with each other as shown in periods b, c, Q outputs of D flip-flop circuits 1-3 all go to a high level at a point of time when a low level of 3-pulse is inputted from a time t3 as to the object shown in the period (b). Thus, an output of a NAND circuit 5 goes to a low level and an output of a latch circuit 8 goes to a high level to obtain a detection output (f) corresponding to the period (b). Furthermore, the period of the clock pulse is set to a time equal to the minimum time or a gas when two objects pass continuously or shorter than that thereby causing a clock pulse without fail in a period (e). Thus, even when the time of the open signal generated between the objects is very short, mis- detection of the object is not caused.

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