Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kanegafuchi Chemical Industry Co., Ltd.

Yoichi Hosokawa

Satoru Murakami

Yoshihisa Tawada

Minori Yamaguchi

Hiromi Maeda

Tomoyoshi Zenki

Tadashi Obayashi

Takehisa Nakayama

Shinichiro Kurata

Kenji Kobayashi

The invention relates to an image sensor for use in the facsimile device, image reader, digital scanner and the like. In this image sensor, the photodiodes and blocking diodes formed on an insulating board are insulated by a transparent interlayer insulating film and are connected in series and opposite polarity by coupling electrodes through contact holes in the transparent interlayer insulating film. This image sensor features a high reading speed and a low dark output noise.

Image sensor

An image reading apparatus and method in which a plurality of photoelectric energy converting elements disposed in a one-dimensional array is divided every m elements into n first blocks B.sub.1, B.sub.2, . . . , B.sub.n, driving voltages are applied sequentially to the units of m photoelectric energy converting elements in the first blocks B.sub.1, B.sub.2, . . . , B.sub.n, and the electrical signals of the photoelectric energy converting elements are read out. The drive side on which the driving voltage is sequentially applied to the above-mentioned divided n first blocks, B.sub.1, B.sub.2, . . . , B.sub.n is further divided every x first blocks into y second blocks C.sub.1, C.sub.2, . . . , C.sub.y, and are provided a first voltage application means which applies a first driving voltage (D1, D2, . . . , Dy) in sequence to the units of x first blocks B.sub.1, B.sub.2, . . . , B.sub.x in the second blocks C.sub.1, C.sub.2, . . . , C.sub.y, a second voltage application means which applies a second driving voltage (E1, E2, . . . , Ex) in sequence to the first blocks B.sub.1, B.sub.2, . . . , B.sub.x in the same relative positions in the respective second blocks C.sub.1, C.sub.2, . . . , C.sub.y and a matrix driver which applies the driving voltage to drive the units of m photoelectric energy converting elements 10, 12 in the appropriate first blocks when the above-mentioned first driving voltage and second driving voltage are applied simultaneously to the first blocks B.sub.1, B.sub.2, . . . , B.sub.n.

Image reading apparatus and method for driving appropriate photoelectric

The invention seeks to reduce residual image in the vertical direction, which is the most significant drawback in the charge storage system, and further to permit increased speed of operation to be obtained. To this end, an image sensor of matrix drive type according to the invention comprises m by n diode pairs each including a photo- and a blocking diode PD and BD with the cathode electrodes thereof connected in series, the diode pairs constituting n blocks B.sub.1,B.sub.2 . . . , Bn each of m diode pairs. A clamp diode CD is connected to the juncture between the photo- and blocking diodes PD and BD in each diode pair to clamp the potential on the juncture and thus permit complete and quick charging of the capacitance of the photo-diode PD.

Image sensor utilizing photo diode, blocking diode and clamping diode

Strain sensor

A temperature detector having a semiconductor layer which is a p-type or n-type semiconductor doped by addition of an impurity. The semi- semiconductor is completely amorphous, or substantially amorphous with the inclusion of microcrystals. The temperature detector has good sensitivity at a temperature of not more than 100 K, and has good linearity of the change of resistivity to the change of temperature over a wide range of temperature.

Temperature detector

Growing community of inventors

Hyogo, Japan

Yoichi Hosokawa