US3814965A - Color image pick-up tube having a silicon target plate - Google Patents

Color image pick-up tube having a silicon target plate Download PDF

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Publication number
US3814965A
US3814965A US00274932A US27493272A US3814965A US 3814965 A US3814965 A US 3814965A US 00274932 A US00274932 A US 00274932A US 27493272 A US27493272 A US 27493272A US 3814965 A US3814965 A US 3814965A
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US
United States
Prior art keywords
plate
target plate
image pick
target
color image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00274932A
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English (en)
Inventor
T Matsumura
T Hasegawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
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Matsushita Electronics Corp
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Filing date
Publication date
Application filed by Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
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Publication of US3814965A publication Critical patent/US3814965A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/898—Spectral filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/46—Tubes in which electrical output represents both intensity and colour of image
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
    • H01J2229/8916—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices inside the vessel

Definitions

  • ABSTRACT In a color image pickup tube using a silicon target plate as a photo-electric transducer, the main portion of the face plate is slightly elevated except at its peripheral annular portion to form a flat-topped convexity on which a colorfilter is formed and the peripheral protrusion of the silicon target plate is fastened to the peripheral annular portion of the face plate, so that the target area of the target plate is arranged in opposition to the color filter with a small gap left therebetween.
  • the inner surface of the face plate is slightly elevated except at its peripheral annular portion so as to form a circular plateau and a color filter is formed on the plateau.
  • the silicon target is fastened at its peripheral protrusion to the peripheral annular portion of the face plate soas to arrange the target area of the target plate in opposition to the color filter and to provide a small gap therebetween.
  • FIG. 1. is a sectional view of the main portion of a color image pick-up embodying the present invention.
  • v FIG. '2 shows a part of the main portion shown in FIG. I, which isexplained in detail concerning the present invention.
  • a face plate 3 is fastened to the open end of a cylindrical glass envelope 1 by means of an indium ring 2 fused to both members.
  • the face plate 3, as seen also in FIG. 2, comprises a peripheral annular portion 4 and a main portion 5 encircled by the annular portion 4.
  • the main portion 5 is slightly convex and its surface is flat.
  • a color filter 6 constituted of red R, green G and blue B filter segments in the form of stripes which are arranged one after another in this order mentioned with an index line (I) interposed between adjacent stripes.
  • a circular silicon target plate 7, of N-type silicon single crystal comprises a target area 27 having a small thickness, on the surface of which a matrix of p-n junction photosensitive elements 37 is formed and a peripheral portion, i.e., annular protrusion 17.
  • the target plate 7 is mounted on the face plate 3 with its annular protrusion 17 resting on the annular periphery 4 on the face plate.
  • the relative position between the p-n junction photosensitive elements 37 of the target area 27'and the stripe segments of the color filter 6 is adjust'ed, and adhesive agent is applied at several portions between the peripheral annular portion 4 and the annular protrusion 17 so as to fasten them together.
  • the control of the relative position can be performed, for example, through the light penetration method so that the photosensitive elements 37 and the segment stripes of the color filter 6 may be brought in registration with each other.
  • the thickness a of the target area 2.7 of the silicon target plate 7 is preferably set within a range from 15 to 25 microns while the thickness b of the annular protrusion 17 is about 150 microns.
  • the diameter of each of the p-n junction photosensitive elements 37 is about 8 microns and the space between adjacent elements is about 20 microns.
  • the gap C between the color filter 6 and the target area 27 is about 30 microns or less. A perforation may be cut in a portion of the silicon target plate 7, if necessary, which serves as a vent for evacuating gas.
  • a metal ring 10 having a flange ll is disposed on the target plate 7, as seen in FIG. I, with a metal spring 9 interposed between them, and the flange ll of the metal ring 10 is pressed into the indium ring 2 when the indium ring 2 is fused to fasten the face plate 3 and the target plate 7 and rigidly fixed therein. Therefore, the silicon target plate 7 is always urged toward the face plate 3 by the metal spring 9 and the spring 9 keeps an ohmic contact with the target plate 7.
  • the metal spring 9 is electrically connected through the metal ring 10 and the indium ring 2 with the ring shaped electrode terminal 12 disposed outside the glass envelope.
  • the silicon target plate 7 and the color filter 6 opposing the target area 27 are both located inside the face plate 3, i.e.,
  • the gap between the two members can be made so small that there can be eliminated a drawback which would be caused with the constitution wherein a fiber plate is used as the face plate3.
  • the silicon target plate 7 is fastened to the face plate 3 at its annular protrusion 17 so that the mechanical strength of such a supporting structure is. very high and that the positioning of the two members can be more accurately done.
  • a color image pick-up tube comprising a cylindrical envelope, a face plate having a peripheral annular portion and a main portion encircled by said annular portion, said annular portion being attached to the open end of the cylindrical envelope to provide hermetic sealing and said main portion being slightly elevated to form a plateau extending inwardly into the envelope, a color filter located on said plateau, and a silicon target plate having a peripheral annular protrusion and a target area encircled thereby having p-n junction photosensitive elements formed in the target area surface, said'target plate being located within the envelope over said inwardly extending plateau and being fastened to said face plate at its annular protrusion, the
  • a color image pickup tube in which said face plate is attached to the open end of the cylindrical envelope by an indium ring, and a metal ring is provided surrounding the peripheral portion of the target plate and having a flange rigidly held by said indium ring, spring means being located between said metal ring and the peripheral portion of the target plate to urge the target plate towards the face plate.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Color Television Image Signal Generators (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
US00274932A 1971-07-28 1972-07-25 Color image pick-up tube having a silicon target plate Expired - Lifetime US3814965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46057055A JPS5132407B2 (enrdf_load_stackoverflow) 1971-07-28 1971-07-28

Publications (1)

Publication Number Publication Date
US3814965A true US3814965A (en) 1974-06-04

Family

ID=13044744

Family Applications (1)

Application Number Title Priority Date Filing Date
US00274932A Expired - Lifetime US3814965A (en) 1971-07-28 1972-07-25 Color image pick-up tube having a silicon target plate

Country Status (5)

Country Link
US (1) US3814965A (enrdf_load_stackoverflow)
JP (1) JPS5132407B2 (enrdf_load_stackoverflow)
DE (1) DE2236999C3 (enrdf_load_stackoverflow)
FR (1) FR2147252B1 (enrdf_load_stackoverflow)
GB (1) GB1370049A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2727156A1 (de) * 1976-06-29 1978-01-12 Philips Nv Auftreffplatte und auftreffplattenanordnung fuer eine aufnahmeroehre und verfahren zu deren herstellung
US4103203A (en) * 1974-09-09 1978-07-25 Rca Corporation Wafer mounting structure for pickup tube

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7603829A (nl) * 1976-04-12 1977-10-14 Philips Nv Opneembuis met gereduceerde flare.
JPS5478026A (en) * 1977-12-05 1979-06-21 Hitachi Ltd Production of solid color image pickup unit
NL7904754A (nl) * 1979-06-19 1980-12-23 Philips Nv Televisiekamerabuis.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446791A (en) * 1946-06-11 1948-08-10 Rca Corp Color television tube
US3579012A (en) * 1968-10-16 1971-05-18 Philips Corp Imaging device with combined thin monocrystalline semiconductive target-window assembly
US3609399A (en) * 1969-01-31 1971-09-28 Nippon Electric Co Tricolor image photodiode pickup array

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446791A (en) * 1946-06-11 1948-08-10 Rca Corp Color television tube
US3579012A (en) * 1968-10-16 1971-05-18 Philips Corp Imaging device with combined thin monocrystalline semiconductive target-window assembly
US3609399A (en) * 1969-01-31 1971-09-28 Nippon Electric Co Tricolor image photodiode pickup array

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103203A (en) * 1974-09-09 1978-07-25 Rca Corporation Wafer mounting structure for pickup tube
DE2727156A1 (de) * 1976-06-29 1978-01-12 Philips Nv Auftreffplatte und auftreffplattenanordnung fuer eine aufnahmeroehre und verfahren zu deren herstellung
US4251909A (en) * 1976-06-29 1981-02-24 U.S. Philips Corporation Method of manufacturing a target assembly for a camera tube

Also Published As

Publication number Publication date
DE2236999C3 (de) 1974-08-08
GB1370049A (en) 1974-10-09
FR2147252A1 (enrdf_load_stackoverflow) 1973-03-09
JPS4827628A (enrdf_load_stackoverflow) 1973-04-12
DE2236999B2 (de) 1974-01-24
JPS5132407B2 (enrdf_load_stackoverflow) 1976-09-13
DE2236999A1 (de) 1973-02-15
FR2147252B1 (enrdf_load_stackoverflow) 1976-08-13

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