CN1083624A - Color cathode-ray tube - Google Patents
Color cathode-ray tube Download PDFInfo
- Publication number
- CN1083624A CN1083624A CN 93106205 CN93106205A CN1083624A CN 1083624 A CN1083624 A CN 1083624A CN 93106205 CN93106205 CN 93106205 CN 93106205 A CN93106205 A CN 93106205A CN 1083624 A CN1083624 A CN 1083624A
- Authority
- CN
- China
- Prior art keywords
- curvature
- radius
- axis
- effective diameter
- coverboard
- 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.)
- Granted
Links
Images
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
The shadow mask 62 and/or the coverboard 51 of color cathode ray tube are made: in the cross section of getting along the plane parallel with X-Z, the radius of curvature in its centre is greater than the radius of curvature of the effective diameter edge on the Y-axis.The radius of curvature of effective diameter edge is less than the radius of curvature of diagonal effective diameter edge on the X-axis.In coverboard 51, the thickness of effective diameter edge and coverboard 51 got in the cross section in the difference between the thickness on the X-axis along the plane parallel with Y-Z and located maximum between the effective diameter edge on the heart and the X-axis therein.But thereby both can reduce the electron beam error anti-eye strain that falls.
Description
The present invention relates to a kind of color cathode ray tube, relate to improvement or rather the panel and the shadow mask of color cathode ray tube.
Figure 1 shows that (colour-CRT), the tubular axis of color cathode ray tube 50 is decided to be the Z axle, long axis direction and Z axle quadrature, and pass the center of coverboard 51 are decided to be X-axis to major axis to color cathode ray tube of shadow mask type.Short-axis direction and Z axle and X-axis quadrature, and pass the center of coverboard 51, minor axis is decided to be Y-axis.Color cathode ray tube 50 includes the panel 52, the coverboard 51(coverboard 51 that are essentially rectangle and has the edge member 54 of extension from panel 52 lateral margin positions) and the infundibulate housing 56 that links with coverboard 51.Infundibulate housing 56 has and is essentially columniform neck 58, in the neck 58 electron gun arrangements is housed.Be formed with phosphor screen on the inner surface of panel 52, the rectangle shadow mask is installed on the housing 51, facing to phosphor screen.Shadow mask is made of a metal sheet, and has a large amount of slit pores.Shadow mask is installed on inner surface one side of panel 52, and spaced a predetermined distance from panel 52, is welded on the rectangle seat frame around the shadow mask.The supporting member of several elastically deformables is welded on the frame.Since these supporting members be installed on the coverboard 51 the coverboard pins engages together, shadow mask just is supported on the coverboard 51.
The multibeam electron that electron gun arrangements from be contained in neck 58 emits is entered by convergence in the slit pore of shadow mask, drops on then on the phosphor screen that is formed on the coverboard 51.Phosphor screen is made of a plurality of bar shaped phosphor screens, and a plurality of fluorescence coatings just send the light of multiple color when electron beam arrives.Shadow mask is used for making electron beam to drop on the predetermined fluorescence coating.
For multibeam electron is dropped on the predetermined fluorescence coating, the electronics 2/3 or more of the multibeam electron that comes from the electron gun emission is not through slit pore, but bombardment is on shadow mask and be converted into heat, thereby makes mask temperature rising, metal shadow mask generation thermal expansion.When the shadow mask thermal expansion, the relative position between its slit pore and the fluoroscopic bar shaped fluorescence coating changes, and this variation causes that the mistake of electron beam falls on the phosphor screen, thereby causes the colour purity of color cathode ray tube to descend.Fall in order to proofread and correct this mistake that variation caused owing to relative position between shadow mask and phosphor screen, adopted supporting member with bimetallic (bimetal), these supporting members make the shadow mask of expansion move on fluoroscopic direction according to bimetallic motion, make distance between shadow mask and the phosphor screen thus always in allowed band.Therefore, having proofreaied and correct the mistake that the variation owing to relative position between shadow mask and the phosphor screen causes falls.But, when making the high light of phosphor screen emission brightness and make the drop point of electron beam concentrate on fluoroscopic a part at short notice, near the just sharply heating of shadow mask at this position.The local heating meeting of shadow mask causes that the part mistake of electron beam falls.It is serious problems that this local mistake drops in the conventional color cathode ray tube.
United States Patent (USP) the 4th, 535,907 and 4,537, the coverboard that discloses a kind of improved cathode ray tube No. 322.United States Patent (USP) the 4th, 537, No. 321 and Japan Patent disclose 59-158056 number (Application No. 469,775) and disclose a kind of color cathode ray tube with smooth basically panel.Exactly, because the panel of the color cathode ray tube described in the Application No. 469,775 is smooth substantially, so when the heating of shadow mask part, the mistake of electron beam falls to aggravating.As shown in Figure 2, the centre of the panel of color cathode ray tube tube axial direction (being Z-direction) go up and minor axis on the effective diameter end between range difference bigger, and the difference of the distance on tube axial direction (being Z-direction) is very little between the effective diameter end of panel major axis and the cornerwise effective diameter end.The panel of this coverboard has very big radius of curvature.Like this, because peripheral part of panel is smooth substantially, shadow mask has almost smooth shape.Because shadow mask is more smooth to position on every side from its centre,,, make the aggravation that falls of the mistake of electron beam just the relative position between phosphor screen and the shadow mask changes if then near the position around the shadow mask and during heating by beam bombardment.As a result, the colour purity of color cathode ray tube just significantly reduces.
In above problem,, adopted a signal generator that is used to produce rectangle window shape pattern for the zone that the easy generation mistake of checking colour-CRT falls.Make the position and the change of shape of window shape pattern, come the mistake of Measurement of Electron Beam to fall.Figure 3 shows that the luminous electron beam pattern 5 of almost whole highlight surface degree that is used to make phosphor screen 6 by big electric current generation.In pattern shown in Figure 35, because whole shadow mask all expands, local mistake falls to just producing quite fewly.When Figure 4 shows that a part of high brightness luminescent that is used to make phosphor screen 6, the grating pattern 7 that elongates relatively.The zone that mistake drops out existing maximum is pattern 7 residing zones shown in Figure 4.The mistake living reason of shaving one's head is as follows: at first be because design CRT to such an extent that make average anode current be no more than predetermined value, for this reason, big in the pattern shown in Figure 4 in the current density ratio of each unit area of the shadow mask big window shape pattern shown in Figure 3.Thus, in pattern shown in Figure 4, the shadow mask severity of being heated, temperature rises rapidly.Next, the amount that by mistake falls occurs in the position of grating pattern shown in Figure 47 easily.That is to say that the relative position between the corresponding bar shaped fluorescence coating of the slit pore of shadow mask and phosphor screen is easy in the position of pattern shown in Figure 4 change.This be because, because electron beam passes the slit pore of shadow mask obliquely, the position that electron beam drops on the fluoroscopic corresponding bar shaped fluorescence coating just is easy to change and change bigger because of the thermal expansion of shadow mask, but, when pattern is positioned near fluoroscopic centre, if shadow mask expands owing to being heated, just the direction of shadow mask thermal expansion is corresponding to the direction of electron beam, like this, the relative position between the slit pore of shadow mask and the fluoroscopic corresponding bar shaped fluorescence coating is just almost constant.When pattern is positioned near fluoroscopic edge,, just can avoid thermal expansion because shadow mask is fixed on the frame.So mistake falls on the easiest zone that occurs in grating pattern shown in Figure 4.
The mistake that the Figure 5 shows that electron beam shown in Figure 4 state that falls.Supporting member 66 is installed on the skeleton frame 63, and skeleton frame 63 is welded on the shadow mask 62, and supporting member 66 meshes together with embedding bolt 64, and embedding bolt 64 is installed on the inner surface of edge of coverboard 51.When electron beam 69 falls, when making phosphor screen 60 low-light levels luminous, shadow mask 62 is so not warm, and is positioned at A place, position, and in this case, electron beam 69 just drops on the tram of phosphor screen 60.When electron beam 69 falls, when making the local high brightness luminescent of phosphor screen 60, shadow mask 62 localized heating are to high temperature, and thermal expansion moves on to position B, in this case, because the slit pore 63 of shadow mask 62 moves near phosphor screen 60, so the whereabouts position of electron beam 69 on phosphor screen 60 changes, the result, electron beam just can not drop on the fluoroscopic precalculated position.
United States Patent (USP) the 4th, 677 No. 339 and 4,697, has been described a kind of method that overcomes the above problems No. 119.In the color cathode ray tube that above-mentioned patent is described, in by the section that obtains along dissecing shadow mask with the parallel plane direction of Y-Z, the radius of curvature on Y direction changes.Above-mentioned patent has only been considered the Y direction of color cathode ray tube, and reckons without X-direction.
One of the object of the invention just provides a kind of color cathode ray tube, and this color cathode ray tube can reduce the thermal expansion of shadow mask, thereby the mistake that can reduce electron beam falls, and can eliminate the fatigue of the eyes that the big incidence angle because of exterior light causes again.
Include according to a kind of color cathode ray tube provided by the invention: vacuum chamber, this vacuum chamber has coverboard, infundibulate housing and neck, also have an axle, wherein, described coverboard has panel, this panel has basic the be front surface of rectangle and rear surface, described coverboard also has from the interior circumferential surface of panel surrounding edge and extends the edge member of coming, and the infundibulate housing is made funnel-form, and with the edge member adjacency of coverboard, neck becomes substantially cylindrical, and with infundibulate housing adjacency; Electron gun arrangements, it is installed in the neck, is used to launch three beams and drops on electron beam on the phosphor screen; A shadow mask, it is installed in the coverboard, facing to phosphor screen, and has a plurality of slit pores the three-beam electron-beam from electron gun arrangements is therefrom passed; Be used to support the bracing or strutting arrangement of shadow mask; It is characterized in that if tubular axis is decided to be the Z axle, major axis and short-axis direction are decided to be X-axis and Y-axis respectively, make the center of the described panel that the Z axle passes be decided to be initial point, on described panel, in by the cross section of getting along the plane parallel with X-Z, in the radius of curvature of the center of described effective curved surface of the described panel radius of curvature greater than place, the effective diameter edge on Y-axis, the radius of curvature at the place, effective diameter edge on X-axis is less than the radius of curvature at place, effective diameter edge, diagonal angle.
According to the present invention, consider the radius of curvature on X-direction and the Y direction simultaneously, thereby the mistake that can eliminate the electron beam that the thermal expansion owing to shadow mask causes falls, can eliminate again owing to be presented at the fatigue of the eyes that the high-contrast image on the coverboard face causes.The high color purity that can keep color cathode ray tube thus.
Fig. 1 is the perspective view of the conventional color cathode ray tube of explanation;
Fig. 2 is the view in the explanation coverboard cross section related with conventional color cathode ray tube;
Fig. 3 is the schematic diagram of pattern on the explanation color cathode ray tube;
Fig. 4 is the schematic diagram of pattern on the explanation color cathode ray tube;
Fig. 5 is the view that the shadow mask local deformation that causes owing to heating is described;
Fig. 6 is the perspective view of the color cathode ray tube of the embodiment of the invention;
Fig. 7 is the sectional view of the color cathode ray tube of the embodiment of the invention;
Fig. 8 is the plan view of explanation embodiment of the invention shadow mask;
Fig. 9 is explanation embodiment of the invention shadow mask and radius of curvature and leaves the curve that concerns between the distance at shadow mask center;
Figure 10 is the radius of curvature of explanation embodiment of the invention shadow mask and leaves the curve that concerns between the distance of some P on the shadow mask;
Figure 11 is the cutaway view that the coverboard of executing example is closed in the present invention;
Figure 12 is the relation curve between explanation embodiment of the invention coverboard thickness disparity and the distance of leaving the coverboard center.
Fig. 6 and the color cathode ray tube 50 that Figure 7 shows that the embodiment of the invention.Color cathode ray tube 50 comprises coverboard 51, and coverboard 51 has and substantially be the panel 52 of rectangle and infundibulate housing 56, and the edge member 54 that comes from the lateral margin position extend through of the panel 52 of housing 51 links at point of attachment 55 and infundibulate housing 56.Thus, color cathode ray tube 50 is carried out soldering and sealing at point of attachment 55 places, to form the vacuum chamber of high vacuum state.Color cathode ray tube 50 has the neck 58 of coming from 56 extensions of infundibulate housing.Phosphor screen 60 is installed on the inner surface of panel 52, and three phosphor strips that are used to send three kinds of colors (promptly red, green, blue look) light alternately are aligned to phosphor screen 60.Shadow mask will be installed and be able to preset space length facing to phosphor screen 60.The tubular axis at the center of passing shadow mask 62 center O and neck 58 is decided to be the Z axle, its direction and Z axle quadrature and the major axis that passes shadow mask 62 center O are decided to be X-axis, direction and Z axle and X-axis quadrature and the minor axis that passes shadow mask 62 center O are decided to be Y-axis.The position is welded on the rectangle skeleton frame 63 around the shadow mask 62.Skeleton frame 63 has the elastic support member 66 with 64 engagements of embedding bolt.Embedding bolt 64 is embedded in the edge member 54 of coverboard 51.Like this, shadow mask 62 just flexiblely is clamped on the coverboard 51 by spring support member 66.On the direction parallel (promptly along Y direction) with the bearing of trend of fluorescence and 60 bar, in shadow mask 62, radially be formed with a large amount of slit pores 65, slit pore 65 is formed in the rectangular area 74 that is illustrated by the broken lines among Fig. 8.Rectangular area 74 constitutes the effective coverage of displayed image.The deflection system 70 that is used to produce magnetic field is installed in infundibulate housing 56 outsides, and near neck 58.Being used for in-line arrangement (inline) electron gun 68 of divergent bundle is contained in the neck 58.
From array type electron gun 68 emissions three beam electrons 69.Three beam electrons of being launched 69 are deflected the magnetic core logical circuit deflection that system 70 produces.Three beam electrons 69 through deflection are converged in the slit pore 65 of shadow mask 62, and drive out of on the phosphor screen 60 on the coverboard 51.Thus, electron beam 69 just scans shadow mask 62 and phosphor screen 60.In this case, the electron beam of slit pore that can not be by shadow mask 62 just bombards at shadow mask 62 and ends, and is converted into heat.
Figure 8 shows that the shadow mask 62 of the embodiment of the invention.Fig. 9 and the radius of curvature R that Figure 10 shows that shadow mask 62.Figure 9 shows that in the cross section that is parallel to X-Z and obtains, near the radius of curvature R at Y-axis place on plane that Y direction is moved.Figure 10 shows that by along being parallel to X-Z and and in the cross section that obtains, near the radius of curvature R the dotted line of effective diameter point P that passes short-axis direction shown in Figure 8 and Q on plane that Y direction is moved.In curvature shown in Figure 9 71, the effective diameter marginal point N on from the shadow mask center to Y-axis, radius of curvature R almost is that dullness reduces, therefore, at marginal point N place shown in Figure 8, radius of curvature R is reduced to about 60% of center O place.In curve shown in Figure 10 72, effective diameter marginal point Q on from the effective diameter marginal point P on the X-axis to the angle, radius of curvature R almost is dull the increase, therefore, at marginal point Q place shown in Figure 8, radius of curvature increases to about 4.5 times of X-axis top edge point P place.
On the X-direction of effective curved surface of shadow mask 62, around the center O, have quite smoothly than the position of larger radius of curvature R, and near the variable quantity that has the some P on its Z-direction of position of the radius of curvature R that reduces is bigger.So some O and the position between the L on the shadow mask almost do not have range difference on Z-direction.It is bigger to have the variable quantity of position on Z-direction that reduces radius of curvature R near the some N.Around the some Q, have then quite smoothly than the position of larger radius of curvature R, therefore, the position range difference on Z-direction between some N and the M is bigger.Like this, can manufacture shadow mask 62 greatlyyer in the distance of the range difference between some L and the M on the Z-direction.Because on Z-direction, the difference (variable quantity) of the distance of the some M in the middle of from the some L on the X-axis to the edge can reduce, then along being parallel to Y-Z's and on the some L of shadow mask 62 and the plane between the M and in the cross section that obtains, radius of curvature R also can reduce.Like this, the mistake that causes owing to thermal deformation near the zone of the some M of shadow mask 62 falls and just can effectively be proofreaied and correct.As for the position near edge between some Q and the P, because in the cross section that obtains along the plane that is parallel to X-Z, it is bigger that curvature is closed the footpath near the angle of some Q, just can reduce in the gap of putting the distance between P and the Q on the Z-direction.Therefore, can manufacture shadow mask 62 smoothly substantially.Owing to shadow mask 62 can be made the radius of curvature R monotone variation that is done so that the cross section that obtains along the plane that is parallel to X-Z, so a kind of simple structure can be provided.
According to another embodiment, can manufacture coverboard 51 identically with the switch of shadow mask 62.Or rather, in the cross section by the coverboard that obtains along the plane that is parallel to X-Z, the radius of curvature R of close Y-axis reduces to the effective diameter edge dullness on the Y-axis from the centre of housing.And in the cross section that obtains along being parallel to the plane of X-Z, the radius of curvature R of effective diameter edge, the dull increase in position on from the position on the X-axis to the angle.Therefore, owing to can manufacture coverboard to such an extent that have smooth centre, the incidence angle of exterior light be reduced.Like this, just can eliminate the eye fatigue that causes owing to the high-contrast image that is presented on the coverboard face.Because by and in the coverboard cross section that obtains along being parallel to the plane of X-Z, can obtain increasing near the radius of curvature at angle, so on Z-direction, on the angle of coverboard and the gap of the distance between the centre can be reduced.
Can combine use to shadow mask in the foregoing description and coverboard.When shadow mask that adopts above embodiment and coverboard, the shadow mask that then adopts smooth deckle board and be easy to make.According to above embodiment manufacture 30 " 110 ° of deflection color cathode ray tubes can be eliminated about 20% conventional color cathode ray tube and mistake and fall.
Should be noted that, do not change to respectively to a certain degree, just can not reckon with effect of the present invention as the radius of curvature between the radius of curvature between fruit dot O and the N and some P and the Q.The gap of radius of curvature preferably 10% or greater than 10%.But if too big near the radius of curvature of putting N, then the gap of the distance from a L to a M reduces on Z-direction, and effect of the present invention can not reach.So,, then preferably be decided to be 2.5Smm or littler near the radius of curvature of putting N if the diagonal angle effective diameter of colour-CRT is Smm.Combine above embodiment 30 " real data of 110 ° of deflection color cathode ray tubes is as follows.R
1Be the radius of curvature at center O place, R
2Be a radius of curvature at N place, R
3Be a radius of curvature at P place, R
4It is a radius of curvature at Q place.
R
1: the outer surface 2460mm of coverboard
The inner surface 2300mm of coverboard
Shadow mask 1810mm
R
2: the outer surface 1550mm of coverboard
The inner surface 1350mm of coverboard
Shadow mask 1120mm
R
3: the outer surface 780mm of coverboard
The inner surface 650mm of coverboard
Shadow mask 540mm
R
4: the outer surface 1379mm of coverboard
The inner surface 2960mm of coverboard
Shadow mask 1510mm
When the radius of curvature near some Q being decided to be the radius of curvature that is equal to or greater than close some N place, then as can recognizing from the above description, effect of the present invention can be strengthened.
Figure 11 and Figure 12 illustrate the 3rd embodiment of the present invention.On the active zone 75 of coverboard shown in Figure 11 51, the tubular axis that passes coverboard 51 center O is decided to be X-axis, be decided to be X-axis with Z axle quadrature and the major axis that passes coverboard 51 center O, be decided to be Y-axis with Z and X-axis quadrature and the minor axis that passes coverboard 51 center O.Center O is left in the edge of coverboard 51 on X-direction point is K, and the edge of coverboard 51 is eccentric on Y direction to be represented with U.Point J is between a PO and K.Edge by a K and the plane parallel with Y-Z is by a tailor-made some T.Edge by a J and the plane parallel with Y-Z is by a tailor-made some S.Along in the cross section of plane gained that is parallel to Y-Z, the thickness at the center O place of coverboard 51 is had h made to order
1, at the tailor-made H of the thickness at the some U place at Y-axis top edge position
1, h
1And H
1Between the tailor-made D of difference
1The thickness at 51 J places of coverboard is by tailor-made h
2, the thickness at some S place is by tailor-made H
2, h
2With H
2Between difference be decided to be D
2Difference D
1Less than difference D
2Coverboard 51 is at the tailor-made h of a thickness at H place
3At the tailor-made H of a thickness at T place
3, h
3With H
3The tailor-made D of difference
3, difference D
3Less than difference D
2Be these parametric representations:
D
2＝H
2-h
2＞H
1-h
1＝D
1
D
2＝H
2-h
2＞H
3-h
3＝D
3
Figure 12 shows the variation of the thickness disparity from an O to a K.Solid line 76 expressions thickness difference D of the present invention, the thickness difference of the conventional CRT of dotted line 78 expressions.In the correlation technique by dotted line 78 representatives, thickness difference is (on the X-Z plane) maximum at the X=0 place, and reduces along X-direction.In the embodiment of the invention by solid line 76 representatives, coverboard 51 systems are done so that thickness difference D becomes maximum between an O and K.
This embodiment 30 " real data of 110 ° of deflection color cathode ray tubes is as follows: in this case, the value of X is an eccentric distance on X-direction.
h
1＝13.5mm（X＝0mm）
h
2＝14.0mm（X＝150mm）
h
3＝16.6mm（X＝284mm）
H
1＝17.1mm（X＝0mm）
H
2＝17.8mm（X＝150mm）
H
3＝17.0mm（X＝284mm）
Thus,
D
1＝3.6mm
D
2＝3.8mm
D
3＝0.4mm
In general, following scope the best:
8＜h
1＜20
0＜D
1＜10
0＜D
2-D
1＜2
0＜D
2-D
3＜8
Because the thickness of coverboard 51 can change (smooth although the outer surface of coverboard is made) as previously discussed like that, so can in by the cross section that obtains along the plane parallel, reduce on the coverboard inner surface near the radius of curvature of putting the J place with Y-Z.Shadow mask 62 is carried out molded, the mistake of electron beam falls when reducing shadow mask 62 thermal expansions.That is to say that in by the cross section that obtains along the plane parallel with Y-Z, at the regional corresponding some J place that stands maximum heat deformation close and shadow mask 62, radius of curvature reduces.For this reason, even the outer surface of coverboard is manufactured smoothly substantially, also can eliminate the mistake that the thermal deformation owing to shadow mask causes effectively and fall." in 110 ° of deflection color cathode ray tubes, can eliminate the mistake that causes because of thermal deformation about 15% and fall according to this embodiment of the present invention, 30.Although aforesaid color cathode ray tube has the quite little zone of thickness, the mechanical strength of this pipe is enough big, does not find weakening of mechanical strength.
According to the present invention, the thickness of coverboard and panel is changed on request, a kind of errorless substantially color cathode ray tube that falls and can anti-eye strain can be provided.
Claims (6)
1, a kind of color cathode ray tube, it comprises:
Vacuum chamber, this vacuum chamber has coverboard (51), infundibulate housing (56), neck (58), also has a tubular axis, wherein, described coverboard (51) has panel (52), and panel (52) has the basic effective curved surface (75) and the inner surface of rectangle that be, described infundibulate housing (56) is made into infundibulate, and with edge member (54) adjacency of described coverboard (51), it is cylindrical substantially that described neck (58) is made into, and with described infundibulate housing adjacency;
Phosphor screen (60), it is formed on the described inner surface of described panel (52);
Electron gun arrangements (68), it is installed in the described neck (58), is used for launching three beam electrons (69) that drop on the described phosphor screen (60);
Shadow mask (62), it is installed in the described coverboard (51), facing to described phosphor screen (60), and has basic for effective curved surface (74) of rectangle with the micropore (65) that is used to make three beam electrons (69) from described electron gun arrangements (68) to pass therethrough;
Bracing or strutting arrangement (64,66) is used to support described shadow mask (62),
It is characterized in that: if tubular axis is decided to be the Z axle, major axis and short-axis direction are decided to be X-axis and Y-axis respectively, make the center of the described panel (52) that the Z axle passes be decided to be initial point, on described panel (52), in the cross section that obtains along the plane parallel with X-Z, in the radius of curvature of the center of described effective curved surface (75) of described panel (52) radius of curvature greater than place, the effective diameter edge on Y-axis, the radius of curvature at the place, effective diameter edge on X-axis is less than the radius of curvature at place, effective diameter edge, diagonal angle.
2, a kind of color cathode ray tube according to claim 1 is characterized in that, the described effective curved surface (75) with radius of curvature includes the described inner surface of described panel (52).
3, a kind of color cathode ray tube according to claim 1, it is characterized in that, radius of curvature changes to the effective diameter edge on the close Y-axis monotonously from the center of described effective curved surface (75) of described panel (52), from changing monotonously to place, close effective diameter edge, diagonal angle near the effective diameter edge on the X-axis.
4, a kind of color cathode ray tube according to claim 1, it is characterized in that, compare its variation in the radius of curvature of the center of described effective curved surface (75) of described panel 52 with the curvature at place, effective diameter edge on Y-axis and be not less than 10%, the radius of curvature at the active component place on X-axis with compare its variation in the radius of curvature at place, effective diameter edge, diagonal angle and be not less than 10%.
5, a kind of color cathode ray tube according to claim 1 is characterized in that, if the diagonal angle effective diameter is decided to be Smm, then the radius of curvature at the effective diameter edge on Y-axis place is decided to be and is not more than 2.5Smm.
6, a kind of color cathode ray tube according to claim 1 is characterized in that, is equal to or greater than the radius of curvature at place, effective diameter edge on the close Y-axis near the radius of curvature at place, effective diameter edge, diagonal angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93106205A CN1042773C (en) | 1987-08-26 | 1993-05-19 | Color cathode ray tube |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP210287 | 1987-08-26 | ||
| CN93106205A CN1042773C (en) | 1987-08-26 | 1993-05-19 | Color cathode ray tube |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88106242A Division CN1032395C (en) | 1987-08-26 | 1988-08-25 | Colour cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1083624A true CN1083624A (en) | 1994-03-09 |
| CN1042773C CN1042773C (en) | 1999-03-31 |
Family
ID=4986122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93106205A Expired - Lifetime CN1042773C (en) | 1987-08-26 | 1993-05-19 | Color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1042773C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353482C (en) * | 2003-09-05 | 2007-12-05 | Lg.飞利浦显示器（韩国）株式会社 | Color cathode ray tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570101A (en) * | 1983-09-06 | 1986-02-11 | Rca Corporation | Cathode-ray tube having a faceplate panel with a smooth aspherical screen surface |
-
1993
- 1993-05-19 CN CN93106205A patent/CN1042773C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353482C (en) * | 2003-09-05 | 2007-12-05 | Lg.飞利浦显示器（韩国）株式会社 | Color cathode ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1042773C (en) | 1999-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1032395C (en) | Colour cathode-ray tube | |
| CN1016914B (en) | Electron gun structure for use in colour display tube dence | |
| CN1120729A (en) | Color cathode ray tube having a low dynamic focus voltage | |
| KR920003357B1 (en) | Electron gun of color picture tube | |
| CN1015844B (en) | Colour cathode ray tube | |
| CN1034287A (en) | Colour display tube, deflection system and electron gun | |
| CN1165945C (en) | Color cathode-ray tube | |
| EP0058992B1 (en) | Mask-focusing color picture tube | |
| CN1042773C (en) | Color cathode ray tube | |
| CN1057636C (en) | Electron gun for color cathode ray tube | |
| EP0436401B1 (en) | Multistep focusing electron gun for cathode ray tube | |
| CN1022961C (en) | Color cathode ray tube | |
| CN1197111C (en) | Color picture tube having tension mask attached to frame | |
| CN1084927C (en) | Electronic gun for color cathode ray tube | |
| CN100339930C (en) | Colour kinescope | |
| US6570314B2 (en) | Color display tube | |
| CN1344008A (en) | Color CRT having multiple electrostatic four-electrode lens | |
| CN1261965C (en) | Electron gun for cathod-ray tube | |
| US7362044B2 (en) | Electron gun for cathode ray tube and cathode ray tube with the same | |
| CN1244130C (en) | Electronic gun of colour cathode ray tube | |
| CN1488159A (en) | Color picture tube having a low expansion tension mask attached to a higher expansion frame | |
| KR0170223B1 (en) | Electronic gun for color cathode tube | |
| CN1307353A (en) | Cathode-ray tube device | |
| KR100228168B1 (en) | Electron gun for cathode ray tube | |
| US7009333B2 (en) | Structure of electron gun for color cathode ray tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |