CN2178941Y - Electronic gun for single-colour display pipe - Google Patents
Electronic gun for single-colour display pipe Download PDFInfo
- Publication number
- CN2178941Y CN2178941Y CN 93239682 CN93239682U CN2178941Y CN 2178941 Y CN2178941 Y CN 2178941Y CN 93239682 CN93239682 CN 93239682 CN 93239682 U CN93239682 U CN 93239682U CN 2178941 Y CN2178941 Y CN 2178941Y
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- anode
- lens
- cylinder
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model relates to an electronic gun for single-color display pipes, which is assembled into integration by a support rod made of a fore lens and a main lens through insulation material. The inner surface structure of the cylinder of the first anode of the fore lens is designed into a symmetrical rotation surface, the diameter of which is augmented gradually from the inlet of electron beam to the outlet of the electron beam. The distribution and the intensity of the electric field of the fore lens composed of the first anode revealed by the utility model are reasonable. The resolution and the image quality of the single-color display pipe are improved, and the requirements of middle and high resolution televisions and computers can be completely satisfied.
Description
The utility model relates to a kind of monochromatic display tube that is used for, the support bar assembling all-in-one-piece electron gun of being made by insulating material by pre-lens, main lens.
Electron gun is the critical component of display tube, directly is decided by the image quality of display tube.The monochromatic display tube electron gun of domestic production at present, majority is the production technology from external introduction, its structure is generally: comprise a Wehnelt electrode, four anodes and a negative electrode, the part of the Wehnelt electrode and the first anode, second plate constitutes the pre-lens of electron gun, another part of second plate and third anode, the 4th anode constitute the main lens of electron gun, negative electrode is arranged in the Wehnelt electrode, the structure of the first anode is the flat straight cylinder tube that tube end central part is processed with electron beam conduct hole, and pre-lens and main lens are assembled into one by the insulation glass rod.As occupying than great share on the market at home, the electron gun of producing from Japanese NEC Corporation imported technology is exactly this structure.The whole assembly technology structural design of this electron gun still relatively reasonably, but the structural design of its first anode gets very unreasonable, the monochromatic display tube that the electron gun that is made of the first anode of this structure is manufactured, its image quality is not high enough, can not satisfy the requirement of high-definition television and calculator display organization.
Inventor of the present utility model is on the basis of having furtherd investigate display tube imaging mechanism, found and caused the existing not high reason of monochromatic display tube image quality, be because due to the structure of traditional first anode, promptly by due to the flat of first-anode cylinder and the straight cylinder tube inner surface, make the pre-lens that the first anode by this structure constitutes, its Electric Field Distribution and intensity are all undesirable, and then caused focusing effect bad, luminous point is bigger, and image is unclear, of low quality.
So the purpose of this utility model is in the structure by the appropriate design first anode, to avoid the weak point of prior art, and a kind of high quality image that obtains is provided, can satisfy the monochromatic electron gun for display tube of middle and high definition television machine and computer display requirement.
Above-mentioned purpose of the present utility model is achieved like this, electron gun is by pre-lens and main lens, be assembled into one by the support bar made from insulating material, the symmetrical rotary surface of wherein pre-lens first-anode cylinder inner surface structure for from the electron beam inlet to the outlet diameter, increasing gradually.In order to realize the purpose of this utility model better, be convenient to processing again, the symmetry revolution inner surface of first-anode cylinder can be designed to staged symmetry revolution inner surface, preferably the first-anode cylinder with staged symmetry revolution inner surface is designed to fabricated structure, and the outer direct circular tube and the configuration staged inner cylinder within it that are processed with electron beam conduct hole by central part at the bottom of the tube constitute.
The structure of the first anode that the utility model disclosed is different from the structure of the traditional first anode of prior art fully, also is the marrow of invention of the present utility model.The first-anode cylinder inner surface structure that the inventor creatively designs, the symmetry revolution inner surface that promptly from the electron beam inlet to the outlet diameter, increases gradually, more help the electron beam transmission, therefore pre-lens of electron gun that constitute by the first anode that the utility model disclosed, its Electric Field Distribution and intensity have obtained improving greatly, and then improved the resolution of electron beam in monochromatic tube, promptly improved the definition and the image quality of monochromatic display tube.Can satisfy the requirement of middle and high definition television machine and computer fully.
The inner surface structure of the first-anode cylinder that the utility model disclosed can be a taper seat, also can be hyperboloid, or the shoulder hole face of cylinder, can both obtain satisfied effect.For the shoulder hole face of cylinder, can be single-piece shoulder hole cylindrical drum, also can be composite type shoulder hole cylindrical drum.
Accompanying drawing 1 is an overall structure schematic diagram of the present utility model;
Accompanying drawing 2 is a kind of structural representations of the utility model first anode;
Accompanying drawing 3 is another kind of structural representations of the utility model first anode.
Below in conjunction with the explanation of accompanying drawing drawing, provide an embodiment of the present utility model, and further the utility model is described.
Monochromatic electron gun for display tube supports glass rod (6) by pre-lens combination and main lens system by insulation and is assembled into one, wherein pre-lens are made of the part of Wehnelt electrode (1), the first anode (2) and second plate (3), main lens is made of another part and third anode (4), the 4th anode (5) of second plate (3), and negative electrode (7) is arranged in the cylinder of Wehnelt electrode (1).Second plate is a combining structure, and it is made of with the inner core (9) that is installed with staged cylinder within it the urceolus (8) of flat straight cylinder tube.The mode that is installed with is by symmetrical spot welding inner core (8) to be fixed in the urceolus.
The structure of the pre-lens first anode of electron gun that the utility model discloses, be not limited to the described form of embodiment and accompanying drawing, also can be designed to other form according to the principle that it disclosed, also be not limited to be applicable to monochromatic display tube simultaneously, also applicable to multi-color display device.
Claims (3)
1, a kind of monochromatic electron gun for display tube, the support bar of being made by insulating material by pre-lens and main lens (7) is assembled into one, and cylinder (2) inner surface structure that it is characterized in that the pre-lens first anode is for pursuing the symmetrical rotary surface that increases from the electron beam inlet to the outlet diameter.
2, monochromatic electron gun for display tube according to claim 1, the symmetry revolution inner surface that it is characterized in that first-anode cylinder (2) is a staged symmetry rotary surface.
3, monochromatic electron gun for display tube according to claim 2, the first-anode cylinder that it is characterized in that having staged symmetry revolution inner surface is a fabricated structure, is processed with the urceolus (8) of flat straight cylinder tube in electron beam conduct hole and urceolus (9) formation of configuration staged cylinder within it by central part at the bottom of the tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239682 CN2178941Y (en) | 1993-12-10 | 1993-12-10 | Electronic gun for single-colour display pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93239682 CN2178941Y (en) | 1993-12-10 | 1993-12-10 | Electronic gun for single-colour display pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178941Y true CN2178941Y (en) | 1994-10-05 |
Family
ID=33814154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93239682 Expired - Fee Related CN2178941Y (en) | 1993-12-10 | 1993-12-10 | Electronic gun for single-colour display pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178941Y (en) |
-
1993
- 1993-12-10 CN CN 93239682 patent/CN2178941Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |