CN1797681A - Funnel for use in a cathode ray tube - Google Patents

Funnel for use in a cathode ray tube Download PDF

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Publication number
CN1797681A
CN1797681A CNA2005100928853A CN200510092885A CN1797681A CN 1797681 A CN1797681 A CN 1797681A CN A2005100928853 A CNA2005100928853 A CN A2005100928853A CN 200510092885 A CN200510092885 A CN 200510092885A CN 1797681 A CN1797681 A CN 1797681A
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CN
China
Prior art keywords
margin
body part
sealing
glass
awl
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
Application number
CNA2005100928853A
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Chinese (zh)
Inventor
安仁熙
金政默
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Corning Precision Materials Co Ltd
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Samsung Corning Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samsung Corning Co Ltd filed Critical Samsung Corning Co Ltd
Publication of CN1797681A publication Critical patent/CN1797681A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/86—Vessels and containers
    • H01J2229/8603—Neck or cone portions of the CRT vessel
    • H01J2229/8606—Neck or cone portions of the CRT vessel characterised by the shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/86—Vessels and containers
    • H01J2229/8613—Faceplates
    • H01J2229/8616—Faceplates characterised by shape
    • H01J2229/862—Parameterised shape, e.g. expression, relationship or equation

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A funnel for use in a cathode ray tube having a panel includes a body portion having a seal edge to be connected to the panel and having a major axis of two longer sides of the body portion, a minor axis of two shorter sides of the body portion and diagonal axes; a yoke portion extending backward from the body portion; and an inflection portion formed on at least one portion of an inner surface of the body portion at a predetermined distance from the seal edge. The inflection portion is formed such that a thickness of the seal edge is less than that of the body portion.

Description

The glass awl that is used for cathode ray tube
Technical field
The present invention relates to a kind of glass awl that is used for cathode ray tube; More particularly, relate to a kind of glass awl that is used for cathode ray tube that need not to change the pin radius and just can realize the weight saving and the attenuation of cathode ray tube to mould limit external diameter.
Background technology
The glass bulb that adopts in the cathode ray tube that uses in making color television set, computer display etc. comprises three critical pieces substantially, that is, be used for display image thereon screen, be connected to the conical glass awl at the screen back side and be connected to the column awl neck of glass cone top part.Screen, glass awl and awl neck are formed by glass, specifically, are that required size and dimension is made screen and glass awl by the melten glass press forming that is called the glass material base with.
The ordinary construction of conventional cathode ray tube as depicted in figs. 1 and 2.The screen 20 of glass bulb 10 comprises: front portion 21 is used for display image thereon; Skirt shape part 23,21 periphery extends back and has sealing the margin 22 from the front portion; Knuckle radius part 24 is used for and will connects front portion 21 and skirt shape part 23 combines.In addition, screen 20 is a rectangular shape haply, has minor axis 28, the diagonal axis 29 of the major axis 27 of two long limit 26a and 26b, two minor face 25a and 25b.
Glass awl 30 comprises body part 32 with sealing the margin 31 and the deflecting coil part 33 that extends back from body part 32, and wherein the sealing the margin 31 of body part 32 is connected to the sealing the margin 22 of screen 20, thereby forms screen joint 11.In addition, deflecting coil part 33 has sealing the margin 34 in its back-end, and sealing the margin 34 is connected to the sealing the margin 41 of awl neck 40, thereby forms awl neck joint 12.
In addition, the shadow mask 50 that has a plurality of holes (not shown) by stud pin 51 in skirt shape part 23 upper supports of screen 20.Being installed in the awl neck 40 is electron gun 60, and this used in electron gun forms phosphor material powder in the image that the hole of electron beam by shadow mask 50 is transmitted on the inner surface that is coated in front portion 21.In addition, be used to make the deflecting coil part 33 that is installed in glass awl 30 from the deflecting coil 70 of electron gun 60 electrons emitted beam steerings.
Recently, having attempted ins all sorts of ways reduces the total depth of cathode ray tube, and the screen portions of cathode ray tube is enlarged and flattens.But, if the manufacture of glass awl 30 is for making the cathode ray tube attenuation make deflection angle be increased at least 120 degree, this can cause the problem of the mechanical strength of relevant glass bulb 10 so, for user's safe glass bulb 10 need satisfied IEC (International Electrotechnical Commission) 16965 standards at anti-implosion.
For avoiding this structure weakness of cathode ray tube, can increase screen 20 and glass awl 30 thickness separately.But this solution can cause the increase of the glass material base quantity of use, and this can cause the increase of manufacturing cost and glass bulb 10 weight again.In addition, because the turnover rate of boring 30 o'clock glass material bases at the press forming glass increases, so for example on sealing the margin 34, can cause defective such as crack.
In addition,, so also should change the pin radius of stud pin 51, that is, change on the direction of major axis 27 and minor axis 28 from shielding 20 center distance to the inner face of stud pin 51 if increase the thickness of screen 20.In addition, also should on the basis that changes the pin radius, change the size of shadow mask 50.In addition, must make the work that the changes technology various equipments such as comprising stud pin sealer, shadow mask electric welding machine of resetting.So the investment for factory and equipment needs a large amount of time and expense.Simultaneously, under situation about increasing on the direction of major axis 27, minor axis 28 and diagonal axis 29 to mould limit external diameter (MMODs:mold match line outsidediameters), the casing or the exterior case that are adapted at wherein cathode ray tube that mould limit external diameter is installed be should make again, thereby a large amount of time and expense needed for the investment of factory and equipment.
Summary of the invention
Therefore, main purpose of the present invention provides a kind of glass awl that is used for cathode ray tube, described glass awl can realize the weight saving of cathode ray tube and attenuation and need not to change the pin radius and to mould limit external diameter, satisfies IEC (International Electrotechnical Commission) 16965 standards at anti-implosion by the mechanical strength that improves glass bulb simultaneously.
Another object of the present invention provides a kind of thin glass awl that is used for cathode ray tube, and described glass awl has the deflection angle that is equal to or greater than 120 degree, and can reduce to shield the thickness of joint when keeping the enough mechanical strengths of glass bulb.
Another purpose of the present invention provides a kind of glass awl that is used for cathode ray tube, and described glass awl can prevent in compacting process as the defective in crack etc., and need not the replacement technology of equipment, so has improved productivity ratio and reduced manufacturing cost.
According to a preferred embodiment of the invention, a kind of glass awl that is used to have the cathode ray tube of screen is provided, this glass awl comprises body part, deflecting coil part and inflection part, described body part has the sealing the margin that is connected to screen and has the major axis on two long limits of body part, the minor axis and the diagonal axis of two minor faces of body part, described deflecting coil part extends back from body part, described inflection part is being formed on the inner surface of at least a portion body part from the predetermined distance of sealing the margin, wherein, the generation type of described inflection part is the thickness of the thickness of sealing the margin less than body part.
According to another preferred embodiment of the invention, a kind of glass awl that is used to have the cathode ray tube of screen is provided, this glass awl comprises body part, deflecting coil part and stepped part, described body part has the sealing the margin that is connected to screen and has the major axis on two long limits of body part, the minor axis and the diagonal axis of two minor faces of body part, described deflecting coil part extends back from body part, described stepped part is being formed on the inner surface of at least a portion body part from the predetermined distance of sealing the margin, wherein, the generation type of described stepped part is the thickness of the thickness of sealing the margin less than body part.
Description of drawings
By the following description of accompanying drawing and preferred embodiment, above-mentioned and other purposes of the present invention and characteristics will become clear, wherein:
Fig. 1 is the cutaway view of conventional cathode ray tube;
Fig. 2 shows the front view of the screen that is used for conventional cathode ray tube;
Fig. 3 represents the cutaway view of the cathode ray tube that comprises the glass awl according to a preferred embodiment of the invention;
Fig. 4 shows the partial sectional view of the screen of the cathode ray tube that comprises the glass awl according to a preferred embodiment of the invention, and wherein, screen cuts along long axis direction;
Fig. 5 illustrates the partial sectional view that comprises the screen of the cathode ray tube that glass is bored according to of the present invention, and wherein, screen cuts along short-axis direction;
Fig. 6 is the partial sectional view of glass awl according to a preferred embodiment of the invention, and wherein, the glass awl cuts along long axis direction;
Fig. 7 provides the partial sectional view of glass awl according to a preferred embodiment of the invention, and wherein, the glass awl cuts along short-axis direction;
Fig. 8 describes the front view of glass awl according to a preferred embodiment of the invention.
Embodiment
Below, describe the glass awl that is used for cathode ray tube according to a preferred embodiment of the invention with reference to the accompanying drawings in detail.
With reference to Fig. 3 to Fig. 5, the screen 120 of glass bulb 110 comprises: front portion 121 is used for display image thereon; Skirt shape part 123,121 periphery extends back and has sealing the margin 122 from the front portion; Knuckle radius part 124 is used to link front portion 121 and skirt shape part 123.The shadow mask 150 that has many holes (not shown) by a plurality of stud pins 151 in skirt shape part 123 upper supports of screen 120.
With reference to Fig. 3 and Fig. 6 to Fig. 8, according to a preferred embodiment of the invention glass awl 130 is designed to have and is not less than the slim of 120 degree deflection angles.Glass awl 130 comprises body part 132 with sealing the margin 131 and the deflecting coil part 133 that extends back from body part 132.The sealing the margin 131 of glass awl 130 is connected to the sealing the margin 122 of screen 120, thereby forms the screen joint 111 of glass bulb 110.Deflecting coil part 133 has sealing the margin 134 in its back-end, sealing the margin 134 is connected to the sealing the margin 141 of awl neck 140, thereby forms the awl neck joint 112 of glass bulb 110.What install in awl neck 140 is electron gun 160, and it is used for electron beam those holes by shadow mask 150 are transmitted into the image formation phosphor material powder that is coated on 121 inner surfaces of front portion.In addition, be used to make the deflecting coil part 133 that is installed in glass awl 130 from the deflecting coil 170 of electron gun 160 electrons emitted beam steerings.
As shown in Figure 8, similar to the screen 10 shown in Fig. 2 when observing from the front, glass awl 130 is rectangular shape approx, has minor axis 138, the diagonal axis 139 of major axis 137, minor face 135a and the 135b of long limit 136a and 136b.
With reference to Fig. 3, Fig. 6 to Fig. 8, the generation type of the glass awl that is used for cathode ray tube 130 according to a preferred embodiment of the invention is, sealing the margin 131 is respectively along the thickness T of major axis 137 and minor axis 138 directions 1And T 2Less than body part 132 respectively along the thickness T of major axis 137 and minor axis 138 directions 4And T 5In addition, inflection part 180 is formed on the inner surface of body part 132 and with sealing the margin 131 separates predetermined distance, will comprise sealing the margin 131 end sections inner surface and couple together at the inner surface of the body part 132 of this end sections back.According to a preferred embodiment of the invention, inflection part 180 utilizes at least one curve and/or at least one straight line to form, and has the gradient of mitigation.
Simultaneously, the label d that in Fig. 4, shows 1Expression pin radius (mm) refers to along the direction of major axis 137 from shielding 120 the center distance to stud pin 151 inner faces that are installed in skirt shape part 123, and the label d in Fig. 5 2Expression pin radius (mm) refers to along the direction of minor axis 138 from shielding 120 the center distance to stud pin 151 inner faces that are installed in skirt shape part 123.
Preferably, inflection part 180 is formed on sealing the margin 131 and separates on the inner surface of body part 132 of about 1.2-40mm.The inside and outside end parts of sealing the margin 131 is provided with the groove (not shown) that forms the sealing pond.At shielding 120 and the weld penetration of glass awl 130 used crystal glass powder that is called frit when combining, these grooves have formed the sealing pond.Form each groove from sealing the margin to the position that is spaced from about 0.6-1.0mm.Separate position less than 1.2mm if inflection part 180 is formed on sealing the margin 131, it can influence the formation of groove so.Separate position greater than 40mm if inflection part 180 is formed on sealing the margin 131, it can cause the mechanical strength of glass bulb 110 to reduce so.
With reference to Fig. 3, Fig. 7 and Fig. 8, inflection part 180 can be replaced by stepped part 181, stepped part 181 forms highlightedly on the inner surface of body part 132 and separates about 1.2-25.0mm with sealing the margin 131, and gives prominence to about 0.4-7.0mm from the inner end portion of sealing the margin 131.Separate position less than 1.2mm if stepped part 181 is formed on sealing the margin 131, it can influence the formation of groove so.On the other hand, separate position greater than 25.0mm if stepped part 181 is formed on sealing the margin 131, it can cause the mechanical strength of glass bulb 110 to reduce so.In addition, if stepped part 181 is outstanding less than 0.4mm from the inner end portion of sealing the margin 131, the operator of Jian Chaing can not with the naked eye observe stepped part 181 so.On the other hand, if the stepped part 181 that forms is outstanding greater than 7.0mm from the inner end portion of sealing the margin 131, can increase the quantity of employed glass bulb so greatly.
In Fig. 8, inflection part 180 or stepped part 181 form on the inner surface of body part 132 along the direction of major axis 137 or minor axis 138, and do not form in four bights of diagonal axis 139 infall body parts 132.In addition, should be noted in the discussion above that inflection part 180 or stepped part 181 can form at least one direction of major axis 137, minor axis 138 and diagonal axis 139 on the inner surface of body part 132.
With reference to Fig. 6, sealing the margin 131 is along the thickness T of the direction of major axis 137 1Be set as and the thickness T of body part 132 on the direction of major axis 137 4Keep the thickness difference of 0.8mm at least, thereby satisfy following equation 1.
T 4-T 1〉=0.8mm equation 1
If sealing the margin 131 is along the thickness T of the direction of major axis 137 1Do not satisfy the relation of equation 1, should change so at the pin radius d that is installed in the stud pin 151 on the skirt shape part 123 on the direction of major axis 137 1
As shown in Figure 7, the thickness T of sealing the margin 131 on the direction of minor axis 138 2Be set as and the thickness T of body part 132 on the direction of minor axis 138 5Keep the thickness difference of 1.0mm at least, thereby satisfy following equation 2.
T 5-T 2〉=1.0mm equation 2
If sealing the margin 131 is along the thickness T of the direction of minor axis 138 2Do not satisfy the relation of equation 2, should change the pin radius d of the stud pin 151 that on the direction of minor axis 138, is installed in skirt shape part 123 so 2
[experimental example]
Measured the incidence (%), pin radius (mm) in weight (kg), stress (MPa), the sealing the margin crack of a plurality of glass awl 130 and to mould limit external diameter (mm), the thickness of sealing the margin 131 is less than the thickness of body part 132 in formed each glass awl, and measurement result is illustrated in the table 1.This device that employing is bored according to the example 1 and the glass of Comparative Examples 1 and 2 is 29 inches cathode ray tubes, is 34 inches cathode ray tubes and adopt this device of boring according to the example 2 and the glass of Comparative Examples 3 and 4.
In table 1, measured the stress (MPa) (below, abbreviate sealing the margin lower end stress as) of the end portion of sealing the margin 131 in the position that separates about 30mm with sealing the margin 131.In addition, one group of pin radius d that is installed in the stud pin 151 on the skirt shape part 123 as shown in Figure 5 along the direction of minor axis 138 of the expression of the pin radius (mm) in table 1 2Be installed in the pin radius d of the stud pin 151 on the skirt shape part 123 as shown in Figure 4 along the direction of major axis 137 1In addition, to the one group distance of mould limit external diameter (mm) expression along the direction of major axis 138, minor axis 137 and diagonal axis 139.
Table 1
The example sequence number Type of device (inch) Sealing the margin thickness (mm) Weight (kg) Stress (MPa) Incidence (%) Pin radius (mm) MMOD (mm)
Screen The glass awl Sealing the margin The sealing the margin lower end
Example 1 29 13.5× 12.5× 12.5 19.4 10.4 9.3 9.4 0.3 215.5× 280.1 472.7× 600.8× 724.0
Example 2 34 16.0× 14.0× 14.0 31.1 15.4 9.9 9.8 0.5 256.3× 330.5 564.8× 712.4× 857.6
Comparative Examples 1 29 15.5× 14.0× 13.0 20.0 10.5 8.8 9.5 1.2 215.5× 280.1 476.7× 604.8× 724.0
Comparative Examples 2 29 15.5× 14.0× 13.0 19.9 10.5 8.9 9.3 1.2 213.5× 278.1 472.7× 600.8× 724.0
Comparative Examples 3 34 17.5× 16.0× 14.5 32.0 15.6 9.4 10.0 1.4 256.3× 330.5 571.8× 719.4× 857.6
Comparative Examples 4 34 17.5× 16.0× 14.5 31.8 15.6 9.5 9.8 1.4 252.8× 327.0 564.8× 712.4× 857.6
As can be seen from Table 1, in the example 1 sealing the margin along the axial thickness in major axis, minor axis and diagonal angle less than sealing the margin in Comparative Examples 1 and 2 along the axial thickness in major axis, minor axis and diagonal angle.In addition, the glass of example 1 is bored the glass of weight ratio Comparative Examples 1 and 2 and is bored 0.1kg in light weight, and the 0.6kg in light weight and the 0.5kg of the screen of the weight ratio Comparative Examples 1 of the screen in the example 1 and 2.Therefore, by the glass awl of usage example 1, because the quantity of the glass material base that uses reduces, thus can make thin cathode ray tube with the weight that alleviates, and can reduce manufacturing cost.
In addition, the sealing the margin stress ratio Comparative Examples 1 of example 1 and 2 big 0.5MPa of sealing the margin stress and 0.4MPa, and the sealing the margin lower end stress of example 1 almost the sealing the margin lower end stress with Comparative Examples 1 and 2 is identical.It is 10.0MPa that energy satisfies at the edge stress of the IEC standard of anti-implosion and the maximum of lower end, edge stress, thereby, because the sealing the margin stress of example 1 and Comparative Examples 1 and 2 and sealing the margin lower end stress are less than 10.0MPa, so by using its glass awl can make the safe cathode ray tube that satisfies at the IEC standard of anti-implosion.But when carrying out stress formation technology, the incidence in the sealing the margin crack of the example 1 of announcement is than the incidence low 0.9% in the sealing the margin crack of Comparative Examples 1 and 2.As a result, because can alleviate the substandard products of the glass awl of example 1, so can boost productivity and reduce manufacturing cost.
Simultaneously, the pin radius (mm) in the example 1 is 215.5 * 280.1, is 472.7 * 600.8 * 724.0 to mould limit external diameter (mm), and these are the standard values that are used for cathode ray tube.With reference to table 1, the pin radius (mm) of Comparative Examples 1 equals the standard value of example 1, but Comparative Examples 1 mould limit external diameter (mm) is changed greatly.In addition, Comparative Examples 2 mould limit external diameter is equaled the standard value of example 1, but its pin radius (mm) changes greatly.Therefore, the glass awl 30 in does not according to a preferred embodiment of the invention cause and comprises the work of any change technology of equipment that is used to reset such as stud pin sealer, shadow mask electric welding machine, thereby can boost productivity and reduce manufacturing cost.
In addition, in example 2 thickness of sealing the margin on major axis, minor axis and diagonal axis direction less than Comparative Examples 3 and 4 in sealing the margin along the axial thickness in major axis, minor axis and diagonal angle.In addition, the glass in the glass of the example 2 awl weight ratio Comparative Examples 3 and 4 is bored 0.2kg in light weight, and the 0.9kg in light weight and the 0.7kg of the screen of the weight ratio Comparative Examples 3 of the screen of example 2 and 4.Therefore, by the glass awl of usage example 2, because the glass material base quantity of using reduces, thus can make thin cathode ray tube with the weight that alleviates, and can reduce manufacturing cost.
In addition, the sealing the margin stress ratio Comparative Examples 3 of example 2 and 4 little 0.5MPa of sealing the margin stress and 0.4MPa, and the sealing the margin lower end stress of the sealing the margin lower end stress of example 2 and Comparative Examples 3 and 4 is much at one.Because the sealing the margin stress of example 2 and Comparative Examples 3 and 4 and sealing the margin lower end stress is less than 10.0MPa, so can realize to satisfy making at the safe cathode ray tube of the IEC standard of anti-implosion by the usage example 2 and the glass awl of Comparative Examples 3 and 4.But when carrying out press forming technology, the incidence in the sealing the margin crack of the example 2 of announcement is littler by 0.9% than the incidence in the sealing the margin crack of Comparative Examples 3 and 4.As a result, because can alleviate the substandard products of the glass awl of example 1, so can boost productivity and reduce manufacturing cost.
Simultaneously, the pin radius (mm) in the example 2 is 256.3 * 330.5, is 564.8 * 712.4 * 857.6 to mould limit external diameter (mm), and these are the standard values that are used for cathode ray tube.With reference to table 1, the pin radius (mm) of Comparative Examples 3 equals the standard value of example 2, but Comparative Examples 3 mould limit external diameter (mm) is changed greatly.In addition, Comparative Examples 4 mould limit external diameter is equaled the standard value of example 1, but its pin radius (mm) changes greatly.Therefore, the glass awl 30 in does not according to a preferred embodiment of the invention cause and comprises the work of any change technology of equipment that is used to reset such as stud pin sealer, shadow mask electric welding machine, thereby can boost productivity and reduce manufacturing cost.
Preferred embodiment according to the invention described above, the make that is used for the glass awl of cathode ray tube is, have on the inner surface of body part and with sealing the margin inflection part spaced apart by a predetermined distance or stepped part, thereby make the thickness of sealing the margin less than the thickness of body part.Need not to change the pin radius and to mould limit external diameter, the cathode ray tube with this structure can have weight and the attenuation that alleviates in the IEC standard that satisfies at anti-implosion by the mechanical strength that improves glass bulb.Specifically, have under the situation of at least 120 deflection angles of spending, when keeping the enough mechanical strengths of glass bulb, can reduce the thickness of screen joint at thin glass awl.In addition, can be reduced in the press forming technical process defective that generation by the crack etc. causes, and the replacement that need not to equip.Therefore, can boost productivity and reduce manufacturing cost.
Although shown about preferred embodiment and described the present invention, those skilled in the art should be understood that under the situation of the spirit and scope of the present invention that do not break away from claim and limited, can do various changes and modifications.

Claims (10)

1, a kind of glass awl that is used to have the cathode ray tube of screen comprises:
Body part has the sealing the margin that is connected to described screen and has the minor axis and the diagonal axis of the major axis on two long limits of described body part, two minor faces of described body part;
The deflecting coil part extends back from described body part;
The inflection part is being formed on the inner surface of the described body part of at least a portion from the predetermined distance of described sealing the margin,
Wherein, the generation type of described inflection part is the thickness of the thickness of described sealing the margin less than described body part.
2, glass as claimed in claim 1 awl, wherein, along the thickness T of the described sealing the margin of direction of described major axis 1Thickness T with described body part 4Satisfy T 4-T 1The relation of 〉=0.8mm, or along the thickness T of the described sealing the margin of direction of described minor axis 2Thickness T with described body part 5Satisfy T 5-T 2The relation of 〉=1.0mm.
3, glass awl as claimed in claim 1, wherein, the described inflection part that forms on the described inner surface of described body part is approximately 1.2-4.0mm from the distance of described sealing the margin.
4, glass awl as claimed in claim 2, wherein, the described inflection part that forms on the described inner surface of described body part is approximately 1.2-4.0mm from the distance of described sealing the margin.
5, glass as claimed in claim 1 awl, wherein, described inflection part is formed on the described inner surface of described body part along at least one of the direction of described major axis, described minor axis and described diagonal axis.
6, glass as claimed in claim 2 awl, wherein, described inflection part is formed on the described inner surface of described body part along at least one of the direction of described major axis, described minor axis and described diagonal axis.
7, a kind of glass awl that is used to have the cathode ray tube of screen comprises:
Body part has the sealing the margin that is connected to described screen and has the minor axis and the diagonal axis of the major axis on two long limits of described body part, two minor faces of described body part;
The deflecting coil part extends back from described body part;
Stepped part is being formed on the inner surface of the described body part of at least a portion from the predetermined distance of described sealing the margin,
Wherein, the generation type of described stepped part is the thickness of the thickness of described sealing the margin less than described body part.
8, glass awl as claimed in claim 7, wherein, be formed on described stepped portion on the described inner surface of described body part and separate the distance of described sealing the margin and be approximately 1.2-25.0mm, and described stepped part is from the partly outstanding about 0.4-7.0mm of the inner face at described edge.
9, glass as claimed in claim 7 awl, wherein, described stepped part is formed on the described inner surface of described body part along at least one of the direction of described major axis, described minor axis and described diagonal axis.
10, glass as claimed in claim 8 awl, wherein, described stepped part is formed on the described inner surface of described body part along at least one of the direction of described major axis, described minor axis and described diagonal axis.
CNA2005100928853A 2004-12-31 2005-08-23 Funnel for use in a cathode ray tube Pending CN1797681A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20040118095 2004-12-31
KR1020040118095 2004-12-31
KR1020050063313 2005-07-13

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CN1797681A true CN1797681A (en) 2006-07-05

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CN (1) CN1797681A (en)

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