GB753311A - Improvements in or relating to the formation of evaporated deposits of uniform thickness - Google Patents
Improvements in or relating to the formation of evaporated deposits of uniform thicknessInfo
- Publication number
- GB753311A GB753311A GB621953A GB621953A GB753311A GB 753311 A GB753311 A GB 753311A GB 621953 A GB621953 A GB 621953A GB 621953 A GB621953 A GB 621953A GB 753311 A GB753311 A GB 753311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deposit
- evaporators
- formation
- uniform thickness
- sbs3
- 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
Links
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
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
Landscapes
- Physical Vapour Deposition (AREA)
Abstract
753,311. Coating by vapour deposition. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 8, 1954 [March 6, 1953], No. 6219/53. Class 82(2). In a method of forming a deposit on a surface by evaporation from effective line sources which are not long compared with the length of the surface, the quantity of material provided along the lengths of said sources is graduated so that a deposit of substantially uniform thickness is formed. As applied, for example, to the formation of a deposit of photo-conductive material on the target electrode of a television pick-up tube, the material, e.g. SbS3, is provided on V-shaped metal, e.g. Ta, troughs 1, 2 mounted on a metal frame 5 having a rectangular opening 6, and the whole arrangement placed inside the pick-up tube envelope so as to frame the surface 3 which is to be provided with the deposit. Each of the evaporators 1, 2 is provided with five equally spaced beads of SbS3, the weights of which are in the ratio 4 : 3 : 2 : 3 : 4, the larger beads being at the ends of the evaporators. Preferably, eddy current heating is used to heat the evaporators and so vaporise the material. The process may also be used for evaporating material through stencils or fine meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB621953A GB753311A (en) | 1953-03-06 | 1953-03-06 | Improvements in or relating to the formation of evaporated deposits of uniform thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB621953A GB753311A (en) | 1953-03-06 | 1953-03-06 | Improvements in or relating to the formation of evaporated deposits of uniform thickness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB753311A true GB753311A (en) | 1956-07-25 |
Family
ID=9810577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB621953A Expired GB753311A (en) | 1953-03-06 | 1953-03-06 | Improvements in or relating to the formation of evaporated deposits of uniform thickness |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB753311A (en) |
-
1953
- 1953-03-06 GB GB621953A patent/GB753311A/en not_active Expired
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