公开(公告)号：GB1055601A

公开(公告)日：1967-01-18

申请号：GB1310265

申请日：1965-03-27

Applicant: IBM

Inventor： HOBBIS ALLAN JAMES ,  PROUDMAN ANTONY

IPC: G11C13/04 ,  H01L27/144

Abstract: 1,055,601. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 27, 1965, No. 13102/65. Heading H1K. A data store comprises a semi-condnctor block providing a matrix of light sensitive devices, each comprising a small region of opposite conductivity type; the small regions are connected in columns 2-9 each with an input terminal and a plurality of light sources 10-17 are arranged each to direct light towards a respective row; any one device may then be selected by energizing one of the input terminals and one of the light sources to provide an output from the common output terminal 18. Information may be stored by providing apertured masks in the light path so that light is allowed to reach only selected ones of the devices in each row. The light paths may be provided by light rods with reflecting notches or optical fibres and the semi-conductor block may be phosphorus doped silicon with boron diffused islands. The light sources may consist of lasers or gallium arsenide diodes and a plurality of semiconductor blocks in different planes may be provided. Transistors may be used in place of diodes, the connections being made to the emitters and the bases being disconnected so that the transistors operate as diodes.