GB1388091A - Colour picture tubes - Google Patents
Colour picture tubesInfo
- Publication number
- GB1388091A GB1388091A GB150473A GB150473A GB1388091A GB 1388091 A GB1388091 A GB 1388091A GB 150473 A GB150473 A GB 150473A GB 150473 A GB150473 A GB 150473A GB 1388091 A GB1388091 A GB 1388091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- side facing
- bridges
- jan
- stripe
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 238000005530 etching Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
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
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
- H01J29/076—Shadow masks for colour television tubes characterised by the shape or distribution of beam-passing apertures
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C9/00—Electrically-actuated devices for setting the time-indicating means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
1388091 Colour television tubes HITACHI Ltd 11 Jan 1973 [19 Jan 1972] 1504/73 Heading H1D The colour selection electrode 1 of a colour television tube having stripe-shaped fluorescent areas has its corresponding stripe-shaped apertures 2 reinforced by spaced bridges 3 of smaller thickness than the electrode, such that the apertures are divided into sections 2a on the side facing the electrode gun, but merge into a continuous aperture on the side facing the screen, whereby the bridges reduce vibration of the electrode, while avoiding the introduction of halation by reflection of the electron beam and, during manufacture of the tube screen, permitting substantially uniform exposure of uninterrupted phosphor stripes by light projected through the electrode. The bridges may be of tapered shape, as shown, in Fig. 3; may be staggered with respect to those corresponding to adjacent stripes (Fig. 2, not shown); and may protrude above the plane of the electrode on the side facing the gun assembly (Fig. 5, not shown). The electrode may be produced by etching a steel plate; exemplary dimensions are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1972008061U JPS513733Y2 (en) | 1972-01-19 | 1972-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1388091A true GB1388091A (en) | 1975-03-19 |
Family
ID=11682813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB150473A Expired GB1388091A (en) | 1972-01-19 | 1973-01-11 | Colour picture tubes |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3883770A (en) |
| JP (1) | JPS513733Y2 (en) |
| FR (1) | FR2168383B1 (en) |
| GB (1) | GB1388091A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296189A (en) * | 1979-05-24 | 1981-10-20 | Rca Corporation | Color picture tube having improved slit type shadow mask and method of making same |
| US4293792A (en) * | 1979-12-18 | 1981-10-06 | Rca Corporation | Color picture tube having improved slit type shadow mask |
| US4300069A (en) * | 1979-12-18 | 1981-11-10 | Rca Corporation | Color picture tube having improved slit type shadow mask and method of making same |
| JPS577041A (en) * | 1980-05-12 | 1982-01-14 | Buckbee Mears Co | Structure with visual sense opening line and method of manufacturing same |
| US4389592A (en) * | 1980-05-12 | 1983-06-21 | Buckbee-Mears Company | Color picture tube and aperture mask therefor |
| US4632726A (en) * | 1984-07-13 | 1986-12-30 | Bmc Industries, Inc. | Multi-graded aperture mask method |
| KR100364694B1 (en) * | 1999-11-30 | 2002-12-16 | 엘지전자 주식회사 | mask structure for color braun tube |
| KR20010097161A (en) * | 2000-04-20 | 2001-11-08 | 김순택 | Tension mask for color picture tube and method of manufacturing the same and exposure mask for making the tension mask |
| KR20020018278A (en) * | 2000-09-01 | 2002-03-08 | 김순택 | Shadow-mask for color picture tube and method of manufacturing the same and exposure mask for making the shadow-mask |
| US20030143469A1 (en) * | 2001-11-30 | 2003-07-31 | Sage Thomas R. | Grade tie bar only (GTO) and graded grade tie bar only (GGTO) aperture masks |
| WO2003049137A2 (en) * | 2001-11-30 | 2003-06-12 | Bmc Industries, Inc. | Tie bars only on the grade side of aperture masks |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2690518A (en) * | 1953-06-01 | 1954-09-28 | Columbia Broadcasting Syst Inc | Color picture tube |
| JPS4826175B1 (en) * | 1969-02-17 | 1973-08-07 | ||
| US3666462A (en) * | 1969-03-28 | 1972-05-30 | Zenith Radio Corp | Process of screening a shadow mask color tube |
| GB1323620A (en) * | 1971-12-30 | 1973-07-18 | Hitachi Ltd | Shadow masks for use in colour picture tubes |
-
1972
- 1972-01-19 JP JP1972008061U patent/JPS513733Y2/ja not_active Expired
-
1973
- 1973-01-04 US US321019A patent/US3883770A/en not_active Expired - Lifetime
- 1973-01-11 GB GB150473A patent/GB1388091A/en not_active Expired
- 1973-01-16 FR FR7301413A patent/FR2168383B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2302177A1 (en) | 1973-07-26 |
| US3883770A (en) | 1975-05-13 |
| DE2302177B2 (en) | 1975-06-26 |
| JPS4885555U (en) | 1973-10-17 |
| FR2168383A1 (en) | 1973-08-31 |
| JPS513733Y2 (en) | 1976-02-03 |
| FR2168383B1 (en) | 1978-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
| PCNP | Patent ceased through non-payment of renewal fee |