USRE28821E - Pick-up tube envelope sealant extending into groove of annular target support - Google Patents
Pick-up tube envelope sealant extending into groove of annular target support Download PDFInfo
- Publication number
- USRE28821E USRE28821E US05/544,751 US54475175A USRE28821E US RE28821 E USRE28821 E US RE28821E US 54475175 A US54475175 A US 54475175A US RE28821 E USRE28821 E US RE28821E
- Authority
- US
- United States
- Prior art keywords
- support member
- peripheral wall
- binding member
- target assembly
- annular
- 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
Links
- 239000000565 sealant Substances 0.000 title 1
- 230000002093 peripheral effect Effects 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 229910052738 indium Inorganic materials 0.000 claims abstract description 9
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 229910000846 In alloy Inorganic materials 0.000 claims 1
- 229910001128 Sn alloy Inorganic materials 0.000 claims 1
- 238000003466 welding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/026—Mounting or supporting arrangements for charge storage screens not deposited on the frontplate
Definitions
- This invention relates to an image pick-up tube and more particularly to a target assembly of an image pick-up tube.
- the specific purpose of this invention is to provide a target assembly which has a robust construction and is readily fabricated without damage to its target substrate composed of a semiconductor material.
- the target assembly of this invention is constructed at the end portion of a tubular envelope of an image pick-up tube, which includes a face plate hermetically fastened to the open end of the tubular envelope through pressure welding of an annular binding member composed of indium which is previously interposed therebetween.
- An annular support member is mounted on the face plate and secured thereto by means of the binding member combined with the outer surface of the support member. It is important that the support member has on its outer surface a groove extending circumferentially thereof. The binding member melts into the groove so that the support member is robustly secured to the face plate.
- FIG. 1 is a sectional view of the target assembly of this invention showing construction thereof before application of pressure welding technique.
- FIG. 2 is an enlarged sectional view of the target assembly of this invention after application of pressure welding technique.
- FIG. 3 is a perspective view of the target assembly capped with a signal ring.
- FIG. 1 shows an arrangement to be manufactured into a target assembly according to this invention, which comprises a transparent face plate 12.
- a transparent face plate 12 On one surface of the face plate 12 is disposed an annular binding member 14 composed of indium on which a tubular envelope 16 is placed at its one open end 18.
- An annular metallic support member 20 is placed and preferably fixed with e.g., water-glass on the surface of the face plate 12, which member carries therein a target substrate 22.
- the substrate 22 is seated on a offset inner wall of the support member 20 and fixed thereto by means of an electrically conductive paint or cement, or solder 24.
- the support member 20 has its peripheral wall had a groove 26 extending circumferentially thereof. The groove 26 preferably faces the inner wall of the annular binding member 14.
- a suitable pressure is applied between the face plate 12 and the tubular envelope 16 so to manufacture the arrangement into a target assembly of this invention as shown in FIG. 2.
- the binding member 14 is deformed and thus welded hermetically with the face plate 12 and the end 18.
- the deformed binding member enters and welds to the groove 26 of the support member 20. Therefore, the metallic support member 20 is fastened on the face plate 12.
- an amount of heat may be applied to the arrangement as well as the pressure for pressure-welding so as to make the binding member 14 readily enters the groove 26.
- the wall of the groove 26 may be plated with indium, tin, or the alloy thereof so as to increase the robustness of the welded connection of the groove 26 and the binding member 14.
- FIG. 3 shows the assembly 10 of FIG. 2, which is capped with an annular signal ring in order to provide a robust construction and fine configuration of the target assembly.
- the signal ring 28 is fixed to the peripheral wall of the binding member 18 and the envelope 16, and serves as an output terminal of the image pick-up tube by means of conductive paint 30.
- tubular envelope 16 is hermetically sealed at the other end (not shown) so as to make a chamber to be evacuated for permitting an electron beam freely pass therethrough.
- the electron beam is deflected by a suitable means so as to scan the target substrate 22 thereby producing an electric image signal in the substrate in accordance with an optical image irradiated thereto through the face plate 12.
- the particular target assembly can be fabricated through only one pressing step and the susceptible target substrate is protected by the support member, so that, the target substrate does not damaged by external mechanical force or heat for the fabrication of the assembly.
- the target assembly according to this invention therefore has a high productivity.
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
A target assembly of an image pick-up tube including a face plate hermetically fastened on one open end of a tubular envelope of the image pick-up tube through pressure welded binding member composed of indium which is interposed therebetween. A support member supporting therein a target substrate is mounted on the inner surface of the face plate and secured thereto through its peripheral wall combined with the binding member. On the peripheral wall is formed a groove extending circumferentially thereof. The binding member combines with the groove so that the support member favorably fastened to the face plate.
Description
This invention relates to an image pick-up tube and more particularly to a target assembly of an image pick-up tube. The specific purpose of this invention is to provide a target assembly which has a robust construction and is readily fabricated without damage to its target substrate composed of a semiconductor material.
The target assembly of this invention is constructed at the end portion of a tubular envelope of an image pick-up tube, which includes a face plate hermetically fastened to the open end of the tubular envelope through pressure welding of an annular binding member composed of indium which is previously interposed therebetween.
An annular support member is mounted on the face plate and secured thereto by means of the binding member combined with the outer surface of the support member. It is important that the support member has on its outer surface a groove extending circumferentially thereof. The binding member melts into the groove so that the support member is robustly secured to the face plate.
The specific structure of this invention is read in conjunction with the drawing wherein:
FIG. 1 is a sectional view of the target assembly of this invention showing construction thereof before application of pressure welding technique.
FIG. 2 is an enlarged sectional view of the target assembly of this invention after application of pressure welding technique.
FIG. 3 is a perspective view of the target assembly capped with a signal ring.
FIG. 1 shows an arrangement to be manufactured into a target assembly according to this invention, which comprises a transparent face plate 12. On one surface of the face plate 12 is disposed an annular binding member 14 composed of indium on which a tubular envelope 16 is placed at its one open end 18. An annular metallic support member 20 is placed and preferably fixed with e.g., water-glass on the surface of the face plate 12, which member carries therein a target substrate 22. The substrate 22 is seated on a offset inner wall of the support member 20 and fixed thereto by means of an electrically conductive paint or cement, or solder 24. The support member 20 has its peripheral wall had a groove 26 extending circumferentially thereof. The groove 26 preferably faces the inner wall of the annular binding member 14.
A suitable pressure is applied between the face plate 12 and the tubular envelope 16 so to manufacture the arrangement into a target assembly of this invention as shown in FIG. 2. Through the application of such pressure, the binding member 14 is deformed and thus welded hermetically with the face plate 12 and the end 18. In this instance, the deformed binding member enters and welds to the groove 26 of the support member 20. Therefore, the metallic support member 20 is fastened on the face plate 12.
If desired, an amount of heat may be applied to the arrangement as well as the pressure for pressure-welding so as to make the binding member 14 readily enters the groove 26. The wall of the groove 26 may be plated with indium, tin, or the alloy thereof so as to increase the robustness of the welded connection of the groove 26 and the binding member 14.
FIG. 3 shows the assembly 10 of FIG. 2, which is capped with an annular signal ring in order to provide a robust construction and fine configuration of the target assembly. The signal ring 28 is fixed to the peripheral wall of the binding member 18 and the envelope 16, and serves as an output terminal of the image pick-up tube by means of conductive paint 30.
In this instance, it is to be noted that the tubular envelope 16 is hermetically sealed at the other end (not shown) so as to make a chamber to be evacuated for permitting an electron beam freely pass therethrough. The electron beam is deflected by a suitable means so as to scan the target substrate 22 thereby producing an electric image signal in the substrate in accordance with an optical image irradiated thereto through the face plate 12.
It is apparent from the above-description that the particular target assembly can be fabricated through only one pressing step and the susceptible target substrate is protected by the support member, so that, the target substrate does not damaged by external mechanical force or heat for the fabrication of the assembly. The target assembly according to this invention therefore has a high productivity.
Claims (4)
1. A target assembly of an image pick-up tube including a tubular envelope, which comprises:
a transparent face plate;
an annular binding member welded both to the inner surface of said face plate and one open end of said tubular envelope;
an annular support member supporting therein a target substrate of said image pick-up tube mounted on the back surface of said face plate, said support member having on its peripheral wall a groove extending circumferentially of the peripheral wall which groove is combined with said binding member; and
an annular signal ring capping said envelope and secured thereto through an electrically conductive paint, said signal ring being contacted at its inner surface to the peripheral wall of said binding member.
2. A target assembly according to claim 1, wherein the peripheral wall of said support member is plated with indium.
3. A target assembly according to claim 1, wherein the peripheral wall of said support member is plated with tin.
4. A target assembly according to claim 1, wherein the peripheral wall of said support member is plated with an alloy of indium and tin. .Iadd. 5. A target assembly of an image pick-up tube including a tubular envelope, which comprises:
a transparent faceplate;
an annular binding member pressure-welded both to the inner surface of said faceplate and one open end of said tubular envelope;
an annular support member supporting therein a target substrate of said image pick-up tube mounted on the back surface of said faceplate, said support member having on its peripheral wall a groove extending circumferentially of said support member and being combined with said binding member; and
an annular signal ring coupled with said envelope and contacted at its inner surface to the peripheral wall of said binding member..Iaddend..Iadd. 6. A target assembly according to claim 5, wherein the peripheral wall of said support member is plated with indium. .Iaddend..Iadd. 7. A target assembly according to claim 5, wherein the peripheral wall of said support member is plated with tin. .Iaddend..Iadd. 8. A target assembly of an image pick-up tube including a tubular envelope, which comprises:
a transparent faceplate;
an annular binding member pressure-welded both to the inner surface of said faceplate and one open end of said tubular envelope;
an annular support member supporting therein a target substrate of said image pick-up tube mounted on the back surface of said faceplate, said support member having on its peripheral wall a groove extending circumferentially of said support member and being combined with said binding member; and
an annular signal ring capping said envelope and contacted at its inner surface to the peripheral wall of said binding member. .Iaddend..Iadd. 9. A target assembly according to claim 1, wherein said binding member is made of indium. .Iaddend..Iadd. 10. A target assembly according to claim 5, wherein said binding member is made of indium. .Iaddend..Iadd. 11. A target assembly according to claim 8, wherein said binding member is made of indium..Iaddend.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/544,751 USRE28821E (en) | 1970-09-19 | 1975-01-28 | Pick-up tube envelope sealant extending into groove of annular target support |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JA45-82324 | 1970-09-19 | ||
| JP8232470 | 1970-09-19 | ||
| US18131171A | 1971-09-17 | 1971-09-17 | |
| US05/544,751 USRE28821E (en) | 1970-09-19 | 1975-01-28 | Pick-up tube envelope sealant extending into groove of annular target support |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18131171A Reissue | 1970-09-19 | 1971-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USRE28821E true USRE28821E (en) | 1976-05-18 |
Family
ID=27303884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/544,751 Expired - Lifetime USRE28821E (en) | 1970-09-19 | 1975-01-28 | Pick-up tube envelope sealant extending into groove of annular target support |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | USRE28821E (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3073981A (en) * | 1960-08-30 | 1963-01-15 | Rca Corp | Photoconductive pickup tube having an electrically isolated mesh assembly |
| US3577027A (en) * | 1968-08-30 | 1971-05-04 | Zenith Radio Corp | Low noise image intensifier |
| US3590304A (en) * | 1969-11-13 | 1971-06-29 | Zenith Radio Corp | Image intensifier |
-
1975
- 1975-01-28 US US05/544,751 patent/USRE28821E/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3073981A (en) * | 1960-08-30 | 1963-01-15 | Rca Corp | Photoconductive pickup tube having an electrically isolated mesh assembly |
| US3577027A (en) * | 1968-08-30 | 1971-05-04 | Zenith Radio Corp | Low noise image intensifier |
| US3590304A (en) * | 1969-11-13 | 1971-06-29 | Zenith Radio Corp | Image intensifier |
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