CN2077591U - Multi-pole magnetic deflection coil in kinescope - Google Patents
Multi-pole magnetic deflection coil in kinescope Download PDFInfo
- Publication number
- CN2077591U CN2077591U CN 90214679 CN90214679U CN2077591U CN 2077591 U CN2077591 U CN 2077591U CN 90214679 CN90214679 CN 90214679 CN 90214679 U CN90214679 U CN 90214679U CN 2077591 U CN2077591 U CN 2077591U
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- magnetic
- deflection coil
- winding
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Abstract
The utility model relates to a multi-pole magnetic deflecting coil in a kinescope for an electron beam display device. The utility model is composed of a winding, a framework and magnetic poles. The number of the magnetic poles is 4 (n+1), and the n is an integer from one to nine. The structure of the utility model can be adopted the column type, the wheel type, or the multichip overlapped type. The number of turns and the direction of windings of the coil corresponding to each magnetic pole are arranged according to the relationships between the sine and the cosine to obtain the ideal and uniform deflecting magnetic field. The utility model has the advantages of small power consumption of the deflection, small defocus, good linearity, material saving, small size, and light weight. Besides, the utility model is favorable to improve the quality of the kinescope and the display tube with the high resolution.
Description
The utility model is a kind of magnetic deflection coil that all places picture tube shell inside, belongs to the electron beam display device technical field.
Television set or used picture tube or the display tube of display generally all adopt the extrinsic deflection structure at present.In order to save the deflection power consumption, the picture tube neck is constantly attenuated, but meticulous can be that the requirement that obtains the necessary big neck size of little luminous point contradicts with the electron-optical system of electron gun again.In order further to reduce the deflection power consumption, reduce deflection defocusing, improve the performance of deflecting coil, the pipe inner magnetic deflection structure has been proposed.Because present intrinsic deflection structure is based on an extrinsic deflection coil miniaturization or adopts four utmost point magnetic deflection fields, consequently the edge defocuses greatly, deflection linearity is poor, distortion is big, thereby can not get satisfied effect, can not adapt to the requirement of television set or display.
The purpose of this utility model is at the deficiencies in the prior art, provides that a kind of deflection power consumption is little, the inner deflecting coil of the new structure that defocuses little, good linearity, and it is applicable to the electron beam display device of band magnetic deflection system.
The utility model is made of winding, skeleton and magnetic pole, is characterized in that magnetic pole has 4(n+1) individual, n is 1 to 9 integer.Concrete structure can adopt " column ", " wheel formula " or " multi-disc eclipsed form " structure.Horizontal deflection and frame deflection provide magnetomotive force with the rule of sinusoidal and cosine to each magnetic pole respectively, and magnetomotive force is produced by alive coil.For guarantee row, frame deflector coil all only has two lead-in wires, each pole pair is answered the number of turn of coil and around distributing according to sinusoidal and cosine relation to (sense of current), so that obtain a desirable accurate even magnetic deflection field.Because the actual number of magnetic poles of using is limited, each magnetic pole is pressed correspondence position by the quantitative relationship calculating and setting.
The utility model not only have the deflection power consumption little, defocus characteristics little, good linearity, also have advantages such as saving material (steel wire and ferrite), volume be little, in light weight.It and pipe are integrated, and the user needn't adjust.Being used for picture tube and high-resolution displaing tube will increase substantially the pipe performance index, and the tubulation cost obviously descends.
Fig. 1 is the schematic top plan view of " column " structure; Fig. 2 is that " column " structure A-A ' is to facing generalized section; Fig. 3 is " wheel formula " structure schematic top plan view; Fig. 4 is that " wheel formula " structure B-B ' is to facing generalized section; Fig. 5, Fig. 6 be the magnet ring sheet schematic diagram of " multi-disc eclipsed form " structure and in pipe position view.
The utility model can adopt scheme implementation as shown in drawings.
" column " structure deflecting coil structure as shown in Figure 1 and Figure 2.Winding (1) passes to electric current, produces magnetic flux in magnetic core.4(n+1) individual magnetic pole (3) and bar magnet (2) constitute magnetic core with a magnet ring (5).Because magnetic core adopts high permeability material to make, magnetic resistance is very little, thus magnetomotive major part all drop on the magnetic pole gap (4) between two magnetic poles, thereby deflection is fully used, the deflection power consumption is reduced.Because the interior magnetic bias utmost point is the edge of deflection space of directly stretching, in order to form required magnetic deflection field, thereby provide effective regulating measure for obtaining desirable Distribution of Magnetic Field, it is little promptly can to obtain deflection defocusing by the change to the shape of each magnetic pole and magnetomotive distribution, the magnetic deflection field that deflection linearity is good.The bobbin (6) that is enclosed within on the bar magnet adopts electrical insulation properties good, the insulating material of vacuum performance is made, its effect is to make coil windings and connect to keep good electric insulation between the magnetic pole of anode high potential, so that use the scanning circuit of common earthing potential.Coaxial in order to guarantee inner deflecting coil and electron gun, and it is idiostatic to guarantee that it and electron gun export anode, around electron beam being entered be not subjected to before the magnetic deflecting field after going out electron gun contiguous winding with the influence of electronegative potential, magnetic deflection coil is provided with concentric tube (7) in the center, it adopts magnetism-free stainless steel to make.For the interference of dissipation magnetic field around shielding to straightaway electron beam in the concentric tube, also be provided with magnetic shielding cylinder (8) in the outside of concentric tube (7), it adopts soft iron to make.Electron gun exit electrode (9) is grafting with concentric tube (7), and is coaxial with deflecting coil to guarantee electron gun.
" wheel formula " inner deflecting coil structure as shown in Figure 3, Fig. 4 is that B-B ' is to cutaway view among Fig. 3, arrow is represented the direction of electron beam among the figure.Magnetic core is a wheel shape structure, and it adopts soft magnetic material to make.4(n+1) magnetic pole constitutes the spoke of wheel, and fuses by wheel rim, and row and frame winding are all on same magnetic core.The winding regularity of distribution is still pressed sine and cosine distribution.Winding can be on wheel rim, also can be on spoke (being on the magnetic pole), can also one group on wheel rim, one group on magnetic pole.Be separated with insulating barrier between winding and magnetic core, also be separated with insulating barrier between row and frame winding.
" multi-disc eclipsed form " inner deflecting coil structure such as Fig. 5, shown in Figure 6.Magnetic core is made of the coaxial magnet ring of multi-disc.The structure of magnet ring as shown in Figure 5, it is made by ferrite, can be by 4(n+1) individual magnetic pole forms, also can be by 2(n+1) individual magnetic pole forms.The assembling position of coil in pipe as shown in Figure 6, it is made of two coaxial magnet rings.For fear of influencing each other between row, frame two windings, row, frame winding on magnet ring (20) and (22), make row, frame encourage magnetic deflection field respectively respectively, and two vertical placements of magnet ring can reach bidimensional deflection.If row, frame two windings are simultaneously around a slice 4(n+1) on the magnet ring formed of individual magnetic pole, another magnet ring then can distort in order to calibration grating around last correcting coil.(10) be filament, (11) are negative electrode, and (12) are Wehnelt electrode, (13) be intensifying ring, (14) are the first anode, (15) focusing electrode, (16) be second plate, (17) are glass rod, and (18) are the magnetic screen sheet, (19) (21) are electrical insulation sheet, (20), (22) be multi-pole magnet-ring, (23) are conductive layer, (24), (25) they are high-temperature resistant enamelled wire, (26), (27), (28), (29) are the spring support chip, (30) are glass bulb.
Claims (7)
1, a kind of multipole magnetic deflection coil that all places picture tube shell inside is made of winding, bone skeleton and magnetic pole, it is characterized in that magnetic pole has 4 (n+1) individual, and n is 1 to 9 integer.
2, multipole magnetic deflection coil according to claim 1 is characterized in that 4(n+1) individual magnetic pole (3) and bar magnet (2) and a magnet ring (5) formation magnetic core.
3, multipole magnetic deflection coil according to claim 2 is characterized in that magnetic deflection coil is provided with the concentric tube (7) that magnetism-free stainless steel is made in the center.
4, multipole magnetic deflection coil according to claim 3 is characterized in that the outside of concentric tube (7) is provided with the magnetic shielding cylinder (8) that soft iron is made.
5, multipole magnetic deflection coil according to claim 1 is characterized in that magnetic core is a wheel shape structure, and 4(n+1) individual magnetic pole constitutes the spoke of wheel, and fuses by wheel rim, and row and frame winding are all on same magnetic core.
6, multipole magnetic deflection coil according to claim 5 is characterized in that winding can be on wheel rim, also can be on spoke, perhaps one group on wheel rim, one group on spoke, between winding and the magnetic core insulating barrier is arranged, the row and the frame winding between insulating barrier is also arranged.
7, multipole magnetic deflection coil according to claim 1 is characterized in that it is by 4(n+1) the coaxial magnet rings of two of forming of individual magnetic pole constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214679 CN2077591U (en) | 1990-10-31 | 1990-10-31 | Multi-pole magnetic deflection coil in kinescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214679 CN2077591U (en) | 1990-10-31 | 1990-10-31 | Multi-pole magnetic deflection coil in kinescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2077591U true CN2077591U (en) | 1991-05-22 |
Family
ID=4894036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90214679 Expired - Lifetime CN2077591U (en) | 1990-10-31 | 1990-10-31 | Multi-pole magnetic deflection coil in kinescope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2077591U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406657A (en) * | 2013-08-09 | 2013-11-27 | 南京理工大学 | Electromagnetic deflection scanning coil for machining electron beam |
| WO2019137183A1 (en) * | 2018-01-10 | 2019-07-18 | 桂林狮达技术股份有限公司 | Deflection scanning device for multi-phase winding and deflection scanning system |
| CN110660634A (en) * | 2019-08-28 | 2020-01-07 | 中科晶源微电子技术（北京）有限公司 | Multipole deflector for charged particle beam and charged particle beam imaging apparatus |
-
1990
- 1990-10-31 CN CN 90214679 patent/CN2077591U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103406657A (en) * | 2013-08-09 | 2013-11-27 | 南京理工大学 | Electromagnetic deflection scanning coil for machining electron beam |
| WO2019137183A1 (en) * | 2018-01-10 | 2019-07-18 | 桂林狮达技术股份有限公司 | Deflection scanning device for multi-phase winding and deflection scanning system |
| US10804070B2 (en) | 2018-01-10 | 2020-10-13 | Guilin Thd Technology Co., Ltd | Deflection scanning device with multi-phase winding and deflection scanning system |
| CN110660634A (en) * | 2019-08-28 | 2020-01-07 | 中科晶源微电子技术（北京）有限公司 | Multipole deflector for charged particle beam and charged particle beam imaging apparatus |
| US11295928B2 (en) | 2019-08-28 | 2022-04-05 | Zhongke Jingyuan Electron Limited, Beijing (CN) | Multi-pole deflector for charged particle beam and charged particle beam imaging apparatus |
| CN110660634B (en) * | 2019-08-28 | 2022-05-06 | 中科晶源微电子技术（北京）有限公司 | Multipole deflector for charged particle beam and charged particle beam imaging apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |