Information processing device capable of optically writing synapse strength matrix

• US 5,388,187 A
• Filed: 07/10/1991
• Issued: 02/07/1995
• Est. Priority Date: 07/10/1990
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Original Assignee: Mitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
• Inventors: Hanazato, Yoshio, Isoda, Satoru
• Primary Examiner(s): MacDonald, Allen R.
• Assistant Examiner(s): Davis, George
• Application Number:
  US07/728,165
• Time in Patent Office: 1,308 Days
• Field of Search: 395/25, 395/24, 364/807, 257/53
• US Class Current: 706/40
• CPC Class Codes: G06N 3/063 using electronic means
• CPC Class Codes: G06N 3/0675 using electro-optical, acousto-optical or opto-electronic means

Abstract

An information processing device having neural network functions for performing information processing comprises: a semiconductor integrated circuit section including a plurality of neuronic circuit regions having a neuronic function which is one of said neural network functions, and first and second molecular film provided on the integrated circuit section. The first molecular film has a photoelectric function and the second molecular film has a light-emitting function. Coupling between the plurality of neurons is realized through a combination or the light-emitting and light receiving functions of the first and second molecular films.

Claims

1. An information processing device comprising:

a semiconductor integrated circuit section including N×

M neuronic circuit regions arranged in a matrix, said neuronic circuit regions each having an input electrode and an output electrode;

a first heterogeneous molecular film provided on said semiconductor integrated circuit section and having a photoelectric function;

2N first transparent wiring lines arranged to extend in a first direction on said first heterogeneous molecular film such as to extend above the output electrodes and the input electrodes of M neuronic circuit regions;

a second heterogeneous molecular film provided on said first heterogeneous molecular film and having a photoelectric function;

2M second transparent wiring lines arranged to extend in a second direction on said second heterogeneous molecular film such that adjacent two of them extend above N neuronic circuit regions without extending above the output and input electrodes of these neuronic circuit regions;

a transparent insulating layer provided on said second heterogeneous molecular film and said second transparent wiring lines;

a transparent electrode provided on said transparent insulating layer;

a third heterogeneous molecular film provided on said transparent electrode and having a light-emitting function;

6×

N×

M electrodes provided on said third heterogeneous molecular film and at intersections of the output and input electrodes of said neuronic circuit regions and said first transparent wiring lines and at intersections of said first transparent wiring lines and said second transparent wiring lines; and

lead wires connected to said 6×

N×

M electrodes;

wherein light from said third heterogeneous molecular film irradiates the intersections of said output or said input electrodes of said neuronic circuit regions and said first transparent wiring lines and the intersections of said first transparent wiring lines and said second transparent wiring lines, whereby a coupling strength between said N×

M neuronic circuit regions is controlled.

2. An information processing device as recited in claim 1, further comprising a substrate.

3. An information processing device as recited in claim 2;

wherein said substrate comprises said semiconductor integrated circuit section; and

wherein said neuronic circuit regions are formed in said substrate.

4. An information processing device as recited in claim 3;

wherein said substrate is made of silicon.

5. An information processing device as recited in claim 1;

wherein said first heterogeneous molecular film further comprises a porphyrin derivative in a thickness of several molecular layers and a flavin derivative in a thickness of several molecular layers provided on said porphyrin derivative layers.

6. An information processing device as recited in claim 1;

wherein said second heterogeneous molecular film further comprises a porphyrin derivative in a thickness of several molecular layers and a flavin derivative in a thickness of several molecular layers provided on said porphyrin derivative layers.

7. An information processing device as recited in claim 1;

wherein said third heterogeneous molecular film further comprises a hole-transporting film, a light-emitting film provided on said hole-transporting film and an electron-transporting film provided on said light-emitting film.

8. An information processing device as recited in claim 1, further comprising image input elements.

9. An information processing device as recited in claim 8;

wherein said image input elements comprise;

lower electrodes for image input provided on said semiconductor integrated circuit device section; and

said first heterogeneous molecular film provided on said lower electrodes for image input; and

upper electrodes for image input provided on said first molecular film.

10. An information processing device as recited in claim 1, wherein said neuronic circuit regions are formed as analog or digital circuits.

11. An information processing device as recited in claim 1, further comprising:

a first layer comprising a silicon substrate and said neuronic circuit regions formed in said silicon substrate; and

a second layer provided on said first layer comprising said output and input electrodes of said neuronic circuit regions, and an insulating film; and

a third layer provided on said second layer comprising said first heterogeneous molecular film; and

a fourth layer provided on said third layer comprising said first transparent wiring lines and said second heterogeneous molecular film; and

a fifth layer provided on said fourth layer comprising said second heterogeneous molecular film; and

a sixth layer provided on said fifth layer comprising said second transparent wiring lines and said transparent insulating layer; and

a seventh layer provided on said sixth layer comprising said transparent insulating layer; and

an eighth layer provided on said seventh layer comprising said transparent electrode; and

a ninth layer provided on said eighth layer comprising said third heterogeneous molecular film; and

a tenth layer provided on said ninth layer comprising said 6 X M X N electrodes provided on said third molecular film; and

lead wires addressing said electrodes.