Image pickup apparatus for endoscope having reduced diameter

• US 6,040,612 A
• Filed: 01/27/1998
• Issued: 03/21/2000
• Est. Priority Date: 02/07/1997
• Status: Expired due to Term

• Current Assignee: Fuji Photo Optical Co. Ltd (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Optical Co. Ltd (Fujifilm Holdings Corporation)
• Inventors: Minami, Itsuji, Takahashi, Kazuaki
• Primary Examiner(s): Tran, Minh Loan
• Application Number:
  US09/013,934
• Time in Patent Office: 784 Days
• Field of Search: 257/692, 257/693, 257/696, 257/698, 257/774, 257/432, 257/433
• US Class Current: 257/432
• CPC Class Codes: A61B 1/05 characterised by the image sensor, e.g. camera, being in the distal end portion
• CPC Class Codes: H01L 2224/05554 being square
• CPC Class Codes: H01L 2224/49175 Parallel arrangements
• CPC Class Codes: H01L 27/14618 Containers
• CPC Class Codes: H01L 31/02002 Arrangements for conducting electric current to or from the device in operations
• CPC Class Codes: H01L 31/0203 Containers; Encapsulations , e.g. encapsulation of photodiodesfor photovoltaic devices H01L31/048; for organic photosensitive devices H10K30/80
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/555 for picking-up images in sites, inaccessible due to their dimensions or hazardous conditions, e.g. endoscopes or borescopes
• CPC Class Codes: H05K 1/182 associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]

Abstract

An image pickup apparatus or method of the present invention decreases the diameter of an image pickup device assembly by decreasing the thickness of the assembly. A conductor lead (inner lead of TAB product) is formed on a terminal of a CCD so as to protrude from the outer periphery of the main frame of an image pickup device body in accordance with the TAB (Tape Automated Bonding) method capable of realizing mass production, a cover glass is set so that an air gap is formed between the CCD and its image pickup plane side, and thereby an image pickup device body is formed. Moreover, the image pickup device body is set to an aperture of a circuit board to connect the conductor lead to a terminal at the circuit board side. Thereby, it is unnecessary to use a conventional box-type package for storing the CCD.

Claims

1. An image pickup apparatus for an endoscope comprising:

a circuit board having a through hole aperture and at least one terminal;

an image pickup device body having at least one terminal on an image plane pickup side, and an outer periphery;

a conductor lead connected to the terminal of the image pickup device and protruding from the outer periphery;

an optical element attached to the image plane pickup side of the image pickup device body by a sealant;

an airtight air gap formed between the image pickup device, image pickup plane and the optical element;

wherein the image pickup device body is inside the circuit board through hole aperture; and

wherein the conductor lead is a tape automated bond lead.

2. The image pickup apparatus in accordance with claim 1 wherein a bottom portion of the image pickup device extends downward through the through hole aperture and beyond a bottom plane of the circuit board.

3. The image pickup apparatus for an endoscope according to claim 1, wherein said image pickup device body is connected to the circuit board by bending the conductor lead and inserting the conductor lead into a through-hole electrode in said circuit board.

4. The image pickup apparatus in accordance with claim 1 wherein the tape automated bond lead lies on a surface of the image pickup body which permits a distance D to be controlled by the thickness of the sealant.