CN1054462C

CN1054462C - Colour kinescope electron gun with hollow chain-shaped mainlens and unidirectional extension hole circular symmetric auxiliary lens

Info

Publication number: CN1054462C
Application number: CN94107714A
Authority: CN
Inventors: 陈兴耀
Original assignee: Chunghwa Picture Tubes Ltd
Current assignee: Chunghwa Picture Tubes Ltd
Priority date: 1994-06-30
Filing date: 1994-06-30
Publication date: 2000-07-12
Anticipated expiration: 2014-06-30
Also published as: CN1114465A

Abstract

The present invention relates to a color display tube electron gun designed by matching a hollow vehicle chain-shaped main lens with a unidirectional extension hole circular symmetric auxiliary lens. On a hollow vehicle chain-shaped main lens used in the electron gun, an auxiliary lens is formed by jointing and combining a symmetrical circular hole and a unidirectional long extension hole, wherein the circular hole is not only easy to manufacture and shape but also is convenient for controlling the concentricity of the electron gun in the assembly of the gun. The vertical unidirectional long extension hole is added on the circular hole in order to retrieve the defocusing of the main lens, and the circular hole of an auxiliary hole through which two side electronic beams pass does not need to be coincident with the central point of a circle center and the long extension hole.

Description

The electron gun of color picture tube

The present invention refers to the colorful visualization tube electron gun, especially the hollow chain-shaped main lens that refers to a kind of tricolour picture tube is equipped with the electron gun that unidirectional elongated pore adds the design of circular symmetry auxiliary lens, this electron gun uses and is provided with the attachment lens that symmetrical circular port and unidirectional elongated pore are joined and formed, in order to revisal and the different partially phenomenon of focusing of defocusing of controlling that asymmetric common main lens produced in the color picture tube and both sides electron beam.

The electron gun of at present general color picture tube all uses asymmetric common lens, in order to compensate this symmetric form main lens of this kind, the blooming effect that is produced, reach the outside of passing through this common main lens because of two outer beams of this electron gun 68, can make the electron beam after the focusing produce the different partially burnt phenomenon of unidirectional hangover, thereby, change and adopt oval-shaped attachment lens 70,72 (Ellipi-tical Aperture is called for short the EA rifle), but because the shape of EA rifle is special, as shown in Figure 1, so in design, on making and assembling, all produce suitable degree of difficulty, especially, when assembling electron gun, employed group of barral of a gun (Mandrel) is difficult for the slotted eye according to this attachment lens, be shaped accurately and produce, thereby the error of each interelement concentricity when causing assembling electron gun very easily produces defective products.

Shown in Figure 1, be a kind of color electric rifle 68 that is widely used at present with lens of common main lens, this kind color electric rifle is not as doing suitable focusing function compensation, then after focusing on the screen 24, its three-color electron beam 62 will be as shown in Figure 2, and electron beam will produce symmetrical blooming effect in the middle of it on screen, and two outer beams still can produce the different partially phenomenon of focusing to screen center's hangover except that defocusing.

Present another kind of EA (Elliptical Aperture) the type electron gun that uses, as shown in Figure 3, this kind of electron gun 44 utilizes three asymmetric via hole O, P, opposite Jiao partially of Q and defocus performance, proofread and correct the inclined to one side Jiao and the blooming effect of main lens, to reach the correct focusing function of electron beam on screen, though this kind EA type electron gun can make three-color electron beam form correct focus point on screen, but because the shape of its attachment lens is irregular, therefore add man-hour at the manufacturing parts of electronic gun, the difficult accuracy of grasping its processing, and when the test of quality control (qualityControl), also be difficult for its accuracy of checking, because of general industry can be up to ten thousand/inch to the desired accuracy of the part of color electric rifle, under the test condition of so quality control of high accuracy requirement, to the measurement of (referring to non-rectilinear or positive circular) of the irregular curvature of this kind, the real very difficulty that belongs to, required group barral of a gun 80 (mandrel) during especially for assembling electron gun, the accuracy of making of group barral of a gun and moulding, very difficulty also seems, as shown in Figure 4, because, being difficult for of this two kinds of accuracy reaches, to on the accuracy of group rifle, produce and multiply each other or the bad result of addition, therefore, the bad phenomenon of center accuracy that produces during the group rifle, the fraction defective of the electron gun product that military order is produced greatly increases.

Because the manufacturing technology of the color picture tube of aforementioned conventional, when the color picture tube of design and making high-res, the problems that derived, the inventor studies the hollow chain-shaped main lens of inventing out a kind of color picture tube and is equipped with the electron gun that unidirectional extension hole adds the auxilliary saturating design of circular symmetry, expectation is provided with the attachment lens that symmetrical circular port and unidirectional elongated pore are joined and formed by use, that comes revisal and control asymmetric common main lens produced in the color-picture tube defocuses and the different partially phenomenon of focusing of both sides electron beam, and order is when assembling electron gun, employed group of barral of a gun (Mandrel), can comply with the shape of the via hole of this attachment lens, accurately be formed and produce, thereby, the error of each interelement concentricity when effectively reducing assembling electron gun, making its fraction defective get significantly reduces, make the more accurate fast bundle of assembling of the electron gun of color-picture tube, and make it have better performance and cheap production cost.

Main purpose of the present invention, be in order to provide a kind of use to be provided with the attachment lens that symmetrical circular port and unidirectional elongated pore are joined and formed, that comes that revisal and control adopts that asymmetric common main lens produced in the color display tube defocuses and the different partially phenomenon of focusing of both sides electron beam.

Another object of the present invention, it is the attachment lens of joining and forming by symmetrical circular port and unidirectional elongated pore for this, add man-hour in manufacturing, very easily reach the accuracy in its processing, and when the test of quality control (quality Control), also very easily reach the accuracy in its processing, in addition, group barral of a gun (mandrel) required during to assembling electron gun is sayed, this group barral of a gun is because of very easily accurately making and mold according to the shape of attachment lens, and the bad phenomenon of center accuracy that is produced when therefore organizing rifle will significantly reduce, make the acceptance rate of the product of electron gun, significantly increase.

Graphic explanation:

Fig. 1 is the part section schematic perspective view of the attachment lens of traditional colorful visualization tube electron gun;

Fig. 2 is the used common main lens color electric rifle (singly group three electron-beam) of traditional color picture tube shown in Figure 1, and when not doing suitable focusing function compensation, its three-color electron beam focuses on the back formed different partially phenomenon that defocuses and focus on screen;

Fig. 3 is the schematic cross-sectional view of the attachment lens of traditional color electric rifle;

Fig. 4 is the attachment lens of traditional color electric rifle and the group barral of a gun concerns the position when assembly schematic cross-sectional view;

Fig. 5 the present invention is applied to the part assembly schematic diagram among couple embodiment who presses the color electric rifles;

Fig. 6 (a) and (b) are the schematic cross-sectional view that concerns the position in empty wagons chain lens among the present invention and attachment lens hole, and the circular port center of its two outsides attachment lens and the center of elongated hole coincide;

Fig. 7 (a) and (b) are the schematic cross-sectional view that concerns the position in hollow chain-shaped lens of the present invention and attachment lens hole, and the circular port center of its two outsides attachment lens and the center of elongated hole do not coincide;

Fig. 8 is applied in the vertical section schematic diagram of the another embodiment of a QPF type color electric rifle for the present invention;

Fig. 9 is the part assembly schematic diagram of QPE type color electric rifle shown in Figure 8;

Figure 10 (a) and (b) are the hollow chain-shaped lens of QPE type color electric rifle shown in Figure 8 and the schematic cross-sectional view that concerns the position in attachment lens hole, and its outside attachment lens can be the asymmetric shape of the left-right symmetric or the left and right sides.

Color electric rifle 90 of the present invention, the present invention as shown in Figure 5 is at an embodiment of two pressure color electric rifles, mainly comprise negative electrode (Cathode) Kr that can produce three-color electron beam, Kg and Kb, control utmost point G1, anode G2, elements such as focusing electrode G3 and anode (Anode) G4, wherein focusing electrode G3 is the low-pressure area of main lens, anode G4 then is the higher-pressure region of main lens, on the top of focusing electrode G3 near anode G4, be provided with the electrode 96 of a hollow chain-shaped, similarly, on this electrode 96 corresponding anode G4, also be provided with the electrode 98 of a hollow chain-shaped, the main lens of this electron gun is by this two corresponding hollow chain-shaped electrode 96,98 form, the place ahead of the rear of the hollow chain-shaped electrode 96 in this focusing electrode G3 and the hollow chain-shaped electrode 98 in this anode G4, then be respectively equipped with the attachment lens hole 116a that three along continuous straight runs are arranged, 116b and 116c, 118a, 118b and 118c are as figure six (a), (b) shown in.In this design, the periphery in the attachment lens hole of this focusing electrode G3 and this anode G4 is provided with the protuberance that extends to main lens.

Consult Fig. 6 (a) again, (b) shown in, each attachment lens hole 116a on this focusing electrode G3 (and anode G4), 116b and 116c, (and 118a, 118b and 118c), partly vertically extend the elongated hole 126a that offers in the central with a positive circular port cooperation, 126b and 126c, (128a, 128b and 128c) institute joins and forms, each attachment lens hole 116a wherein, 116b and 116c, (and 118a, 118b and 118c) in the center of positive round hole, just overlapped with the center of the slotted hole that vertically extends, and on respectively this focusing electrode G3 and anode G4, the diameter of each positive circular hole and the length of slotted hole in these attachment lens holes, wide identical separately.

Among the present invention, this kind is with attachment lens hole that positive circular port and elongated hole synthesized, because, when making these pole pieces, according to these circles and linear combination, mat mechanicalness process technology is completed, like this, these circular and rectilinear perforates are in the mechanicalness processing and quality control (quality control) that part is made, all easy far beyond making general erose perforate and curve, so, according to these pole piece parts that made of the present invention is finished, reliability through being up to the standards and accuracy ought significantly increase certainly.In addition, more because, attachment lens of the present invention is when assembly is installed, but each interelement correct relation position when installing is located and proofreaied and correct to orbicular group of barral of a gun of mat (beading mandrel), therefore, utilize positive circular (or the positive circle of part of this kind, promptly utilize the positive circular pin sub-fraction person that prunes) the group barral of a gun, in the assembling of electron gun and when making, the control of its each interelement precision and check, all than maintaining a higher accuracy, so the present invention utilizes this kind to offer positive circle or the positive circular and attachment lens hole of part on the pole piece of electron gun, with when assembling and make electron gun, orbicular group of barral of a gun location of positive circle that order is corresponding or part wherein, and then each interelement precision of correcting electronic rifle, thereby the electron gun finished of made, its precision and reliability will significantly increase, and the probability of the defective products that is taken place when producing also will relatively significantly reduce.

Consult Fig. 7 (a), (b) be depicted as the present invention's design in centering empty wagons chain lens and attachment lens hole in another embodiment, in design, each attachment lens hole 132a on its focusing electrode G3 (and anode G4), 132b and 132c, (134a, 134b and 134c) in, via hole 132a that two outer beams pass through and 132c are (in 134a and the 134c, positive circular hole the and vertically center of the slotted hole of extension is not overlapping, and the outside at positive circular hole center is all dropped at the center of respectively extending slotted hole, so, can be in order to compensate the focusing partially different phenomenon of two outer beams when the main lens.And in the auxiliary 132b that middle electron beam passes through, the diameter of the positive circular hole that the diameter of its positive circular hole and two outer beams are passed through can be differing from each other, the different therebetween and main lens focus voltage with compensation.Simultaneously, the length and the width in the vertical extent hole on the attachment lens hole that this center electron beam passed through, also need not be identical with the length and the width in vertical extent hole on the attachment lens hole, the outside, various sizes size with main lens and the attachment lens of this focusing electrode G3, the size that also not necessarily goes up corresponding main lens with anode G4 and assist is identical, and these sizes are complied with the actual demand when designing and producing fully and decided.

Fig. 8 and shown in Figure 9, be that the present invention is in another embodiment at the design in hollow chain-shaped lens and attachment lens hole, wherein shown in Figure 8 is the side view of a QPF type color electric rifle, in this QPF type color electric rifle, remove and comprise general negative electrode Kr, Kg, Kb (Cathode), control utmost point G1, anode G2, grid G 3, between G4 and G5 between formed prefocus district and grid G 5 and G6 outside the formed main lens, also comprise one group by three electrode G51 in these grid G 5 districts, G52 and G53 formed dynamically defocuses compensating electrode, this by consult shown in Figure 9 know learn, defocus the opening (Key Hole Slot) 162 that is equipped with on the compensating electrode along the keyhole shape of vertical and horizontal direction design at this, 164a, 164b, 164c and 166, because, the central part of these keyhole shape openings all is positive circle, so when assembling and making electron gun, whole rifle all can be accepted the insertion of the group barral of a gun of positive cylinder (or part right cylindrical) smoothly, each interelement correct relation position when installing with location and correction, simultaneously, by as can be known shown in Figure 9, attachment lens hole 168a on this electrode G53 and grid G 6,168b and 168c, 174a, 174b and 174c are one and cut the hole merely, and there is no protuberance (extrusion) in its peritreme, this has the protuberance with the via hole shown in Fig. 5, and the person is different.Generally speaking, whether these attachment lens holes need have protuberance or not have the design of protuberance, there is no certain rule, need go up on design fully the requirement of optimization (Optimization) is decided.

Consult shown in Figure 10 a and the 10b, the prolongation hole shape 182a of the vertical direction on the attachment lens hole of the electrode G53 of this QPF type color electric rifle and anode G6 (or focusing electrode G3 and anode G4 of a pressure rifle), 182b, 182c, 188a, 188b and 188c, except that the slotted hole that can be straightsided shape, also may or be similar to oval prolongation hole shape for ellipse, and the length and width of the elongated pore of the size of positive circular port and ellipse or sub-elliptical on the via hole in its center and two outsides, all not necessarily identical, general speech, this two apertura lateralis might not have a left side, right to being referred to as characteristic.

The above only is preferred embodiment of the present invention, and the claim that the present invention advocated; be not limited thereto, be familiar with and stated content as if the skill personage according to the disclosed skill of the present invention by all; can think easily and equivalence change, all should not break away from protection scope of the present invention.

Claims

1. the electron gun of a tricolour picture tube, adopt empty wagons chain main lens to be equipped with unidirectional extension hole and add the design of circular symmetry attachment lens, this electron gun mainly comprises the negative electrode that can produce three-color electron beam, the control utmost point, anode, element such as focusing electrode and anode, it is characterized in that, on the top of focusing electrode near anode, be provided with the electrode of a hollow chain-shaped, on the corresponding anode of this electrode, also be provided with the electrode of a hollow chain-shaped, the main lens of this electron gun is made up of this two corresponding hollow chain-shaped electrode, the place ahead of the rear of empty wagons chain electrode and the hollow chain-shaped electrode in this anode among in this focusing electrode, then be respectively equipped with the attachment lens hole that three along continuous straight runs are arranged, each attachment lens hole on this focusing electrode and the anode cooperates in the central part vertically to extend the elongated hole of offering with a positive circular port and is joined and form.

2. the electron gun of a kind of tricolour picture tube as claimed in claim 1 is characterized in that, the center of the positive round hole in each attachment lens hole is just overlapped with the center of the slotted hole that vertically extends.

3. the electron gun of a kind of tricolour picture tube as claimed in claim 1 or 2 is characterized in that, the length and width of the diameter of each positive circular hole and elongated hole can be identical separately in each attachment lens hole.

4. the electron gun of a kind of tricolour picture tube as claimed in claim 1, it is characterized in that, in each attachment lens hole, on the via hole that two outer beams pass through, but just circular hole and vertically the center non-overlapping of the slotted hole of extension, and the outside at positive circular hole center can be dropped in the center of respectively extending slotted hole, to compensate the focusing partially different phenomenon of two outer beams when the main lens.

5. the electron gun of a kind of tricolour picture tube as claimed in claim 1, it is characterized in that, in each attachment lens hole, in the via hole that middle electron beam passes through, the diameter system of the diameter of its positive circular hole and two hand hay cutter positive circular holes that electron beam passed through can be differing from each other, with the different therebetween main lens focus voltage of compensation.

6. the electron gun of a kind of tricolour picture tube as claimed in claim 1, it is characterized in that, the length and the width in the vertical extent hole on the attachment lens that this center electron beam passed through, need not be identical with the length and the width in vertical extent hole on the attachment lens hole, the outside, these sizes are complied with the actual demand when designing and producing fully and are decided.

7. the electron gun of a kind of tricolour picture tube as claimed in claim 1, it is characterized in that, the various sizes size of the main lens of this focusing electrode and attachment lens, also not necessarily identical with the size of corresponding main lens and attachment lens on the anode, the actual demand when designing and producing and deciding fully of these sizes.

8. the electron gun of a kind of tricolour picture tube as claimed in claim 1, it is characterized in that, when this electron gun is one or four hole shape type color electric rifles, wherein remove and comprise general negative electrode, the control utmost point, anode, between a plurality of grids between formed prefocus district and a plurality of grid outside the formed main lens, in this gate regions, also comprise one group and dynamically defocus compensating electrode by what three electrodes were formed, defocus the opening that is equipped with on the compensating electrode along the keyhole shape of vertical and horizontal direction design at this, the central part of these keyhole shape openings all is positive circle, so when assembling and making electron gun, whole rifle all can be accepted the insertion of the group barral of a gun of positive cylinder or part right cylindrical smoothly, each interelement correct relation position when installing with location and correction.

9. the electron gun of a kind of tricolour picture tube as claimed in claim 8, it is characterized in that, the prolongation hole shape of the vertical direction on the attachment lens hole of this electron gun, except that the slotted hole that can be straightsided shape, also may be for oval or be similar to oval prolongation hole shape, and the length and width of the size of the positive circular port on the via hole of its center and two sides and the elongated pore of ellipse or sub-elliptical can be not necessarily identical.

10. the electron gun of a kind of tricolour picture tube as claimed in claim 8 is characterized in that, the via hole that two outer beams pass through has left and right asymmetric characteristic.