Image sensor

Abstract

Abstract PURPOSE:To make the sensitivity distribution of a photodiode array by a method wherein a plurality of apertures are provided in the region defining the light receiving part of at least one of a pair of electrodes between which an amorphous semiconductor whose main component is silicon and of which a photodiode at a predetermined position of the photodiode array is composed is provided. CONSTITUTION:A plurality of apertures 2a are formed in a lower electrode 2. The size and the number of the apertures 2a are so determined as to obtain a required light signal level when a light with a certain luminous power is applied. In other words, taking a photodiode array in one block of an image sensor, the apertures 2a are provided in the lower electrodes of photodiodes near the end of the block and, the closer the photodiode to the end, the larger the total aperture area (the area of the one aperture 2a X the number of apertures). A light signal output for a certain luminous power can be reduced, so that the nonuniformity of the light outputs along the longitudinal direction of the image sensor can be corrected.

Inventors

• 👤 Katsuaki Komatsu
• 👤 克明 小松
• 👤 Yuji Tamura
• 👤 祐二 田村

Bibliographic Details