CN1630012A - Electron gun structure of color picture tube - Google Patents
Electron gun structure of color picture tube Download PDFInfo
- Publication number
- CN1630012A CN1630012A CN 200310109394 CN200310109394A CN1630012A CN 1630012 A CN1630012 A CN 1630012A CN 200310109394 CN200310109394 CN 200310109394 CN 200310109394 A CN200310109394 A CN 200310109394A CN 1630012 A CN1630012 A CN 1630012A
- Authority
- CN
- China
- Prior art keywords
- electrode assemblie
- electrode
- electron beam
- electron
- electron gun
- 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.)
- Pending
Links
Images
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
This invention discloses an electron gun of color kinescope, which contains cathode, electron beam formation area, prefocusing lens and main lens. Said invention is characteristic of the bottom part of G6 electrode assembly is a large diameter one with an inner membrane set in central part, the electron beam pass hole of it is a vertical hole with arc shaped two sides, the horizontal axle of bottom parts of convergence ring assembly has a horizontal fin with size of 2mm to 3mm having three electron beam pass holes, the top parts of G5 electrode assembly is a large diameter one with an inner membrane of vertical pass hole in electron pass hole of top parts with arc shaped two sides, a prefocusing voltage (Vf) overlapping on static focusing polar G51 electrode assembly, G3 electrode assembly electrode, G51 electrode assembly and G52 electrode assembly which are connected by wire. Said invention avoids the electron beam deformation due to selfconvergence deflection magnetic field and improves electron gun focusing.
Description
Technical field
The present invention relates to a kind of electron gun structure that is used for color picture tube.
Background technology
In general, the definition of color picture tube depends on the size and dimension of getting to the electron beam on the screen.In order to obtain the image of high definition, the size that the electron beam on the screen is got in hope is as far as possible little little with warpage.
Auto-convergence color picture tube magnetic deflection field can cause deflection astigmatism, the spot distrotion of electron beam at the screen periphery, causes colored picture tube corner portion resolution to descend.Along with the expansion of colored picture tube screen size and super graduation, the flattening of screen surfaces, electron beam is more serious in astigmatism, the distortion of screen periphery, electron gun design has been proposed the requirement of more increasing.
Fig. 1 is the electron gun structure schematic diagram of application dynamic focusing mode of the prior art.This electron gun structure is by the negative electrode 1 that forms the electron beam emission, form G1 electrode 2 and G2 electrode 3 that electron beam is shaped and distinguishes, constitute G3 electrode assemblie 104 and the G4 electrode assemblie 105 and the G51 electrode assemblie 106 of prefocus lens, the hole of passing through of three electron beams setting up on G52 electrode assemblie 107 and G6 electrode assemblie 108 and the lateral symmetry axle in assembly cup assembly 109 is the main lens part that circular horizontal fin 192 has constituted electron gun, and the length L 1 of horizontal fin 192 is between 1.0～1.8.Wherein between G51 electrode assemblie 106 and G52 electrode assemblie 107, promptly on the G52 electrode assemblie, be provided with horizontal translot fin part 170.The part of forming G6 electrode assemblie 108 by G6 electrode assemblie interior diaphragm 182 and G6 electrode assemblie at the bottom of part 81 form, be illustrated in figure 2 as this electron gun tomograph, wherein being shaped as of G6 electrode assemblie interior diaphragm 182 is provided with the hole of electron beam through-hole for circle on rectangular part, and the vertical direction size d6 that the position is set of G6 electrode assemblie interior diaphragm 182 part 81 at the bottom of the G6 electrode assemblie is between 3mm～5mm.And G52 electrode assemblie formation part mainly contains G52 electrode assemblie top part 73 and compositions such as target 172 and horizontal translot fin part 170, gapped d0 is separated between G51 electrode assemblie 106 and G52 electrode assemblie 107, and d0 is set between 0.4～0.8.
This electron gun structure comprises a static focus electrode and a dynamic focus electrode, a predetermined static focus voltage (Vf) is superimposed upon on the static focus electrode G51 electrode assemblie 106, uses the conducting of line short circuit between G51 electrode assemblie 106 and the G3 electrode assemblie 104; A dynamic focus voltage (Vd) is superimposed upon and is added to respectively on the static focus voltage (Vf) on the dynamic focus electrode G52 electrode assemblie 107 again, and is synchronous with defection signal.
Fig. 3 is the principle schematic that the dynamic focusing electron gun of employing applies dynamic focus technology.The figure shows the focus state of electron beam on screen when using dynamic quadrupole lens, added dynamic quadrupole lens to improve visual astigmatism, wherein demonstrating positive astigmatism quadrupole lens 10 that quaternary structure in the electron gun forms has proofreaied and correct negative-appearing image that deflecting coil the forms negative-appearing image that lens 12 cause that looses and has loose, this Quadrupole Lens is formed by the horizontal translot fin part 170 that is arranged among Fig. 2 between G51 electrode assemblie 106 and the G52 electrode assemblie 107, quadrupole lens is designed to: 15 are equivalent to the loose amount of the horizontal divergence that lens 12 cause of the negative-appearing image that formed by deflecting coil with electron beam 17 convergence amounts in the horizontal direction, the amount of the vertical convergence that the diffusing lens 12 of negative-appearing image that electron beam 18 divergences are equivalent to be formed by deflecting coil in vertical direction cause, the negative-appearing image of having proofreaied and correct deflection effectively looses.Wherein be loaded into the effect of the dynamic electric voltage of main lens formation electrode, when making electron beam be biased to four jiaos, main lens weakens to some extent, main lens weakened part 19 as dotted line among Fig. 3, the suitable quadrupole lens that is formed by dynamic electric voltage electron beam is focused on the point of fringe region, so can provide the optimum focusing effect for the fringe region of screen in level and vertical direction.
Multimedia colored picture tube and pure flat large-screen colored picture tube generally all adopt dynamic focusing electron gun, and dynamic focusing electron gun is according to applying the mode of dynamic focus voltage, by in main lens or the dynamic quadrupole field of preceding introducing, have overcome astigmatism effectively.Yet increasingly competitive along with chromatic display, reducing cost is one of means of basing oneself upon in market, adopt the chromoscope of dynamic focusing electron gun, dynamic electric voltage often reaches about 1000 volts, on the television set machine line, not only need to increase dynamic focus voltage, high dynamic electric pressure request complete machine provides high voltage performance good dynamic electric voltage circuit, has brought expensive for the television set machine line and burden.
Summary of the invention
The present invention is that provide for the shortcoming that overcomes existing electron gun a kind of is used for large-screen, pure flat the electron gun structure of color picture tube, and this electron gun is installed on the neck part of picture tube, the effect of playing the electron beam emission and focusing on.And proofreaied and correct astigmatism and focus issues that the deflecting coil deflection beam causes well, made whole panel form good luminous point.
The technical scheme that the present invention takes is: the electron gun structure in a kind of color picture tube comprises:
Form the negative electrode of electron beam emission, form G1 electrode and G2 electrode that electron beam is shaped and distinguishes, constitute G3 electrode assemblie, G4 electrode assemblie and the G51 electrode assemblie of prefocus lens, constitute G52 electrode assemblie, G6 electrode assemblie, the assembly cup assembly of main lens part; The adjacent setting of order between each parts; Setting up on the lateral symmetry axle in this assembly cup assembly can be by the horizontal fin of three electron beams; Described G51 electrode assemblie and G52 electrode assemblie are static focus electrode; It is characterized in that,
Part is the large aperture at the bottom of the described G6 electrode assemblie, and the middle part of part is provided with an interior diaphragm at the bottom of the G6 electrode assemblie, and the electron beam through-hole of this interior diaphragm is the vertical ellipse hole of major axis in the Y direction, and the both sides of this elliptical aperture are respectively circular shape;
The lateral symmetry axle of part is provided with a horizontal fin at the bottom of the described assembly cup assembly, and this horizontal tail leaf length L is: 2mm＜L＜3mm which is provided with three electron beam through-holes;
Described G52 electrode assemblie top part is the large aperture, and being provided with one at the middle beam electrons bundle of this top part position by the hole has the interior diaphragm of major axis in the vertical ellipse hole of Y direction, and the both sides of this elliptical aperture are respectively circular shape;
A predetermined focus voltage (Vf) is superimposed upon on the static focus utmost point G51 electrode assemblie; The line short circuit conducting of G3 electrode assemblie electrode, G51 electrode assemblie and G52 electrode assemblie.
Electron gun structure in the above-mentioned color picture tube, wherein, unequal apart from the end vertical direction of d1 and G52 electrode assemblie interior diaphragm and G52 electrode assemblie top part of the vertical direction of the end of part at the bottom of described G6 electrode assemblie interior diaphragm and the G6 electrode assemblie apart from d2, wherein: the value of d1 and d2 is between 1mm～3mm, and d1 is less than d2.
Electron gun structure in the above-mentioned color picture tube, wherein, the gap between described G52 electrode assemblie 7 and the G51 electrode assemblie is set between 1.2～1.5mm.
Because the present invention has adopted above technical scheme, adopted non-dynamic focus to improve the technology of focusing level, overcome because the electron beam distortion that the auto-convergence magnetic deflection field causes, improved the electron gun focusing level, the adjustment of these structural parameters has reached the practicality of technology again, has reached the purpose that reduces cost simultaneously.
Description of drawings
Concrete characteristic performance of the present invention is further described by following embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of the electron gun of application dynamic focusing mode of the prior art.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of the embodiment of Fig. 1.
Fig. 3 is electron gun electron beam focus state schematic diagram on screen when using dynamic quadrupole lens of using the dynamic focusing mode in the prior art.
Fig. 4 is the structural representation of the electron gun embodiment of the present invention's color picture tube of being used for the non-dynamic focus mode.
Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 4.
Fig. 6 is the structural representation of part at the bottom of the G6 electrode assemblie of the present invention.
Fig. 7 is the structural representation of the horizontal fin of the present invention.
Fig. 8 is the equivalent lens schematic diagram of the main lens of electron gun of the present invention, wherein positive astigmatism quadrupole lens and main lens are the lens state when the dynamic electron rifle is used dynamic quadrupole lens in the prior art, and the following main lens of arrow has been represented the main lens that is made of above-mentioned described part of non-dynamic electron rifle of the present invention.
Embodiment
See also Fig. 4, Fig. 5.Electron gun of the present invention has adopted non-dynamic focus to improve the technology of focusing level, and its structure is made of negative electrode 1, G1 electrode 2, G2 electrode 3, prefocus lens A, main lens B.Negative electrode 1 forms the electron beam emission; G1 electrode 2 and G2 electrode 3 form electron beam shaping district; Prefocus lens A is made of G3 electrode assemblie 4, G4 electrode assemblie 5 and G51 electrode assemblie 6; Main lens part B is made of G52 electrode assemblie 7, G6 electrode assemblie 8 and assembly cup assembly 9.With the adjacent setting of upper-part order.
In the main lens of electron gun of the present invention:
The G52 electrode assemblie is made up of end part 71, top part 73 and the G52 electrode assemblie interior diaphragm 72 that is arranged on G52 electrode assemblie top part mesopore, G52 electrode assemblie of the present invention top part 71 is the large aperture, being provided with one at the middle beam electrons bundle of this top part position by the hole has the interior diaphragm 72 of major axis in the vertical ellipse hole of Y direction, and the both sides of this elliptical aperture are respectively circular shape.As shown in Figure 5 72.
With the adjacent setting of G52 electrode assemblie be G6 electrode assemblie 8, part 81 is the large aperture shape at the bottom of the G6 electrode assemblie, the middle part of part 81 is provided with G6 electrode assemblie interior diaphragm 82 at the bottom of the G6 electrode assemblie, part 81 is the large aperture at the bottom of the G6 electrode assemblie of the present invention, the middle part of part is provided with an interior diaphragm 82 at the bottom of the G6 electrode assemblie, the electron beam through-hole of this interior diaphragm is the vertical ellipse hole of major axis in the Y direction, and the both sides of this elliptical aperture are respectively circular shape.(please cooperate referring to Fig. 6, this is the structural representation of part and interior diaphragm 72 and 81 at the bottom of part and the G6 electrode assemblie at the bottom of the G52 electrode assemblie of the present invention).
Because the present invention has adopted part of the wide-aperture end 81 at the G6 of main lens electrode assemblie, adopted wide-aperture top part 73 at the G52 electrode assemblie, simultaneously respectively in the inside of part 81 at the bottom of the G6 electrode assemblie and G52 electrode assemblie top part 73 is provided with the beam electrons bundle by the hole be major axis at the vertical ellipse hole of Y direction interior diaphragm 82 and interior diaphragm 72, sidepiece is made as circular shape on the both sides of elliptical aperture, this structure the good auto-convergence performance that has realized electron gun is set.
Be provided with a horizontal fin 92 on the lateral symmetry axle of part at the bottom of the assembly cup assembly, this horizontal fin is provided with R, G, three electron beam through-holes of B; Please cooperate referring to Fig. 7, this is the structural representation of assembly cup assembly 9 horizontal fins of the present invention, the length of this horizontal fin 92 is set to 2mm＜L＜3mm, and its setting has formed with the G52 electrode assemblie together with part 81 at the bottom of the G6 electrode assemblie and G6 electrode assemblie interior diaphragm 82 has different with the vertical direction convergent force in the horizontal direction lens arrangements.
In the example of electron gun of the present invention, having adopted middle beam electrons bundle at main lens is the vertical ellipse hole of major axis in the Y direction by the hole, the both sides sidepiece of elliptical aperture is the G6 electrode assemblie interior diaphragm 82 and the G52 electrode assemblie interior diaphragm 72 of circular shape, d1 as shown in Figure 4 be G6 electrode assemblie interior diaphragm 82 with the vertical direction of the end of part 81 at the bottom of the G6 electrode assemblie apart from d2 be G52 electrode assemblie interior diaphragm 72 the end of G52 electrode assemblie top part 73 the distance of vertical direction.D4 as shown in Figure 6 is the vertical diameter of elliptical aperture of G6 electrode assemblie interior diaphragm 82 and G52 electrode assemblie interior diaphragm 72, d5 is the longitudinal aperture of part 81 and G52 electrode assemblie top part 73 at the bottom of the G6 electrode assemblie, the size of d1 and d2 and d4 is that electron beam is in one of suitable influencing factor of the focusing force of main lens, wherein: d1 and d2 are unequal, d1 and d2 are between 1mm～3mm, and d1 is less than d2; D4 is the major axis of elliptical aperture, is less than or equal to d5.
Form the quadrupole field effect that similar negative-appearing image looses at the electronegative potential of main lens between the part 81 at the bottom of G6 electrode assemblie interior diaphragm 82 and the G6 electrode assemblie, form the quadrupole field effect of similar positive astigmatism between G52 electrode assemblie interior diaphragm 72 and the G52 electrode assemblie top part 73 at the high potential of main lens, along with reducing of d1, forming the quadrupole field effect that similar negative-appearing image looses at the electronegative potential of main lens between the part 81 at the bottom of G6 electrode assemblie interior diaphragm 82 and the G6 electrode assemblie will weaken to some extent, when d2 reduces, the quadrupole field effect that forms similar positive astigmatism at the high potential of main lens between G52 electrode assemblie interior diaphragm 72 and the G52 electrode assemblie top part 73 will weaken to some extent, when d4 reduces, forming the quadrupole field effect that similar negative-appearing image looses at the electronegative potential of main lens will weaken to some extent, so, can adjust the auto-convergence power of electron beam according to the variation adjustment of the parameter of d1 and d2 and d4.
In the pre-lens arrangement of electron gun of the present invention, G52 electrode assemblie 7 and G51 electrode assemblie 6 gap d 3 are set to (shown in figure four) between 1.2～1.5mm, usually along with the increase of the electrode height rising of electrode focus voltage simultaneously, the electron-baem spot size has the trend of increase, the length that the adjustment electron gun is set in electron gun structure G52 electrode assemblie 7 of the present invention and G51 electrode assemblie 6 gaps, better realized the practicality of manufacture craft, simultaneously for the electron-baem spot size reduce play a role.
See also Fig. 8, this is the equivalent lens schematic diagram of the main lens of electron gun of the present invention, lens state when wherein positive astigmatism quadrupole lens 10 and main lens 11 are dynamic electron rifle application dynamic quadrupole lens, the following main lens 20 of arrow has been represented the main lens that is made of above-mentioned described part of non-dynamic electron rifle of the present invention, positive astigmatism quadrupole lens 10 and main lens 11 coefficient structures when this main lens has substituted lens state when using dynamic quadrupole lens, and be applied in the electron gun lens arrangement of the present invention.When electron beam projects the screen center, the electronics that negative electrode sends is through the preliminary acceleration and the focusing of pre-lens, then will be through the convergence and the focusing of main lens, this main lens is designed to assemble in the horizontal direction electron beam, suitably weaken the convergent force of electron beam in vertical direction, therefore obtain the horizontal direction luminous point and focus on good and beam spot that vertical direction is dispersed slightly at the screen center.When the electron beam that goes out when cathode emission projects four jiaos of screens, after the electron beam that negative electrode sends quickens and focuses on through prefocus lens, this main lens is designed to assemble in the horizontal direction the amount that is equivalent to the horizontal divergence that deflecting coil causes, in vertical direction electron-beam convergence power is suitably weakened to reduce the amount of the vertical convergence that deflecting coil causes, make electron beam be focused on the best focal point in screen edge zone in the horizontal vertical direction, therefore promptly reduced the deflection astigmatism, improve bight luminous point performance, the pipper focusing performance also guarantees substantially simultaneously, makes center and four angular resolution equilibriums.
The dynamic convergence of corner under the static convergence at screen center and the deflection field effect when convergence performance of colored picture tube has comprised the zero deflection field.Static convergence depends primarily on the auto-convergence power and the colour purity convergence correction magnetic ring force of electron gun, and the deflection center in deflection and the performance of deflection behind the auto-convergence of electron gun are depended in dynamic convergence.
When electron beam enters main lens, its electric field opposite side does up the effect of assembling, and the disperse function a little less than when going out main lens, being subjected to, consider that speed was less when electron beam had just entered main lens, long action time, thereby the active force aggregate performance of this main lens is the converging action to electron beam, and just the R/G/B three beams is used the large aperture main lens, can realize the auto-convergence function well.
Claims (3)
1. the electron gun structure in the color picture tube comprises:
Form the negative electrode of electron beam emission, form G1 electrode and G2 electrode that electron beam is shaped and distinguishes, constitute G3 electrode assemblie, G4 electrode assemblie and the G51 electrode assemblie of prefocus lens, constitute G52 electrode assemblie, G6 electrode assemblie, the assembly cup assembly of main lens part; The adjacent setting of order between each parts; Setting up on the lateral symmetry axle in this assembly cup assembly can be by the horizontal fin of three electron beams; Described G51 electrode assemblie and G52 electrode assemblie are static focus electrode;
It is characterized in that,
Part is the large aperture at the bottom of the described G6 electrode assemblie, and the middle part of part is provided with an interior diaphragm at the bottom of the G6 electrode assemblie, and the electron beam through-hole of this interior diaphragm is the vertical ellipse hole of major axis in the Y direction, and the both sides of this elliptical aperture are respectively circular shape;
The lateral symmetry axle of part is provided with a horizontal fin at the bottom of the described assembly cup assembly, and this horizontal tail leaf length L is: 2mm＜L＜3mm which is provided with three electron beam through-holes;
Described G52 electrode assemblie top part is the large aperture, and being provided with one at the middle beam electrons bundle of this top part position by the hole has the interior diaphragm of major axis in the vertical ellipse hole of Y direction, and the both sides of this elliptical aperture are respectively circular shape;
A predetermined focus voltage (Vf) is superimposed upon on the static focus utmost point G51 electrode assemblie; The line short circuit conducting of G3 electrode assemblie electrode, G51 electrode assemblie and G52 electrode assemblie.
2. according to the electron gun structure in the right 1 described color picture tube, it is characterized in that, unequal apart from the vertical direction of d1 and G52 electrode assemblie interior diaphragm and part end, G52 electrode assemblie top of the vertical direction of part end at the bottom of described G6 electrode assemblie interior diaphragm and the G6 electrode assemblie apart from d2, wherein: the value of d1 and d2 is between 1mm～3mm, and d1 is less than d2.
3. according to the electron gun structure in the right 1 described color picture tube, it is characterized in that the gap between described G52 electrode assemblie 7 and the G51 electrode assemblie is set between 1.2～1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109394 CN1630012A (en) | 2003-12-15 | 2003-12-15 | Electron gun structure of color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109394 CN1630012A (en) | 2003-12-15 | 2003-12-15 | Electron gun structure of color picture tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1630012A true CN1630012A (en) | 2005-06-22 |
Family
ID=34843044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310109394 Pending CN1630012A (en) | 2003-12-15 | 2003-12-15 | Electron gun structure of color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1630012A (en) |
-
2003
- 2003-12-15 CN CN 200310109394 patent/CN1630012A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1134814C (en) | Color cathode ray tube having a low dynamic focus voltage | |
| JP2605202B2 (en) | Electron gun for color cathode ray tube | |
| KR940010986B1 (en) | Electron gun for c-crt | |
| CN1123043C (en) | Colour kinescope device | |
| CN1630012A (en) | Electron gun structure of color picture tube | |
| US6927531B2 (en) | Electron gun and color picture tube apparatus that attain a high degree of resolution over the entire screen | |
| CN1084927C (en) | Electronic gun for color cathode ray tube | |
| JP3672390B2 (en) | Electron gun for color cathode ray tube | |
| KR100646910B1 (en) | Cathode ray tube apparatus | |
| US7135813B2 (en) | Color Braun tube apparatus with non-circular electron beam passage aperture | |
| CN1308365A (en) | Color CRT with convergence corrector | |
| JP2563273B2 (en) | Picture tube device | |
| KR200147960Y1 (en) | Electron gun for color picture tube | |
| JP2878731B2 (en) | Color picture tube equipment | |
| US7030548B2 (en) | Cathode-ray tube apparatus | |
| CN1307353A (en) | Cathode-ray tube device | |
| JP3300397B2 (en) | Color picture tube | |
| JP3532220B2 (en) | Electron gun for cathode ray tube | |
| JP3749535B2 (en) | Electron gun structure for color cathode ray tube | |
| JP2000285823A (en) | Color cathode-ray tube device | |
| JPS5830046A (en) | In-line type color cathode ray tube | |
| JPH0146985B2 (en) | ||
| JPH0922666A (en) | Color cathode ray tube | |
| CN1472770A (en) | Projective cathode ray tube device | |
| CN1428811A (en) | Electronic gun for colour kinescope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |