KR100195295B1 - Inner conductive layer of cathode ray tube - Google Patents
Inner conductive layer of cathode ray tube Download PDFInfo
- Publication number
- KR100195295B1 KR100195295B1 KR1019940023156A KR19940023156A KR100195295B1 KR 100195295 B1 KR100195295 B1 KR 100195295B1 KR 1019940023156 A KR1019940023156 A KR 1019940023156A KR 19940023156 A KR19940023156 A KR 19940023156A KR 100195295 B1 KR100195295 B1 KR 100195295B1
- Authority
- KR
- South Korea
- Prior art keywords
- conductive film
- inner conductive
- cathode ray
- ray tube
- funnel
- Prior art date
Links
Classifications
-
- 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
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
본 발명은 음극선관의 개선된 내부도전막 및 그 형성방법을 개시한다.The present invention discloses an improved internal conductive film of a cathode ray tube and a method of forming the same.
종래에는 게터가 내부도전막에 탄성접촉하였으므로 마모에 의해 외부충격으로 이물이 탈락되어 음극선관의 화질과 내압품위등을 저하시켰었다.Conventionally, since the getter is elastically contacted with the inner conductive film, foreign matters are dropped off due to wear and tear, thereby degrading the quality of the cathode ray tube and the pressure resistance quality.
본 발명에서는 펀넬 내면의 소정부위에 가림판을 위치시키고 내부도전막을 도포하여, 이에 미도포부를 형성시킴으로써 게터가 내부도전막에 접촉되지 않도록 하여 종래의 문제를 해결하였다.The present invention solves the conventional problem by placing a shielding plate on a predetermined portion of the inner surface of the funnel and applying an inner conductive film to form an uncoated portion so that the getter does not come into contact with the inner conductive film.
Description
제1도는 일반적인 음극선관을 개략적으로 보이는 단면도.1 is a schematic cross-sectional view of a typical cathode ray tube.
제2도는 본 발명에 따른 내부도전막을 보이는 음극선관의 발췌단면도.2 is a cross-sectional view of the cathode ray tube showing the inner conductive film according to the present invention.
제3도는 본 발명 내부도전막의 형성방법을 보이는 발췌 단면도이다.3 is an excerpt sectional view showing a method for forming an inner conductive film of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
F : 펀넬(funnel) D : 내부도전막F: Funnel D: Internal conductive film
G : 게터(getter) C : (내부도전막의) 미도포부G: getter C: uncoated part (of internal conductive film)
U : 가림판 Z : 노즐(nozzle)U: Blanking plate Z: Nozzle
본 발명은 음극선관(陰極線管) 제조에 관한 것으로, 더 상세히는 펀넬(funnel) 내면에 형성되는 내부도전막(inner conductive layer) 및 이를 형성하는데 적합한 방법에 관한 것이다.TECHNICAL FIELD The present invention relates to the manufacture of cathode ray tubes, and more particularly, to an inner conductive layer formed on an inner surface of a funnel and a method suitable for forming the same.
제1도에서, 음극선관(T)은 전자총(electron gun; E)에서 발사된 열전자를 빔(beam)의 형태로 접속 및 가속하여 섀도우마스크(shadow mask; M)를 통해 형광면에 선택적으로 랜딩(landing)시킴으로써 화상을 표시하게 된다. 이에따라 음극선관(T)에는 전자빔의 형성을 위해 고전압이 인가되는 바, 펀넬(F)의 내면에는 아노드(anode)전압을 전자총(E)에 인가하는 도전통로 역할을 하며 전자빔의 2차 전자를 흡수하여 전자빔을 안정화시키는 내부도전막(D)이 형성된다. 이러한 내부도전막(D)은 외부도전막(도시안됨)과 함께 대용량의 캐패시터(capacitor)를 구성하여 고전압의 리플(ripple)을 제거하고, 배우광(背後光)을 차단하여 화면의 발광휘도를 향상시키는 역할도 하게 된다.In FIG. 1, the cathode ray tube T connects and accelerates hot electrons emitted from an electron gun E in the form of a beam to selectively land on the fluorescent surface through a shadow mask M. The image is displayed by landing. Accordingly, a high voltage is applied to the cathode ray tube T to form an electron beam. The inner surface of the funnel F serves as a conductive path for applying an anode voltage to the electron gun E. An internal conductive film D is formed to absorb and stabilize the electron beam. The inner conductive film D forms a large-capacity capacitor together with the outer conductive film (not shown) to remove ripples of high voltage and to cut off the luminous brightness of the screen by blocking the actor light. It also serves to improve.
한편 음극선관(T)의 내부는 전자빔의 안정적 발생과 가속을 위해 고진공상태로 제조되는 바, 음극선관(T)의 배기(排氣)후 게터(geetter; G)를 관내에서 플래싱(flashing)시킴으로써 진공도를 향상시키고 있다. 이 게터(G)는 섀도우마스크(M)를 지지하는 프레임(frame; R)에 지지되거나 또는 도시된 바와 같이 게터스프링(S)을 통해 전자총(E)에 지지되어 펀넬(F)의 내면, 즉 내부도전막(D)에 탄성적으로 밀착된다.Meanwhile, the inside of the cathode ray tube T is manufactured in a high vacuum state for stable generation and acceleration of the electron beam, and by flashing a getter G in the tube after the exhaust of the cathode ray tube T is exhausted. Improve the degree of vacuum. The getter G is supported by a frame R supporting the shadow mask M or supported by the electron gun E through the getter spring S, as shown, that is, the inner surface of the funnel F, i.e. Elastic contact with the internal conductive film (D).
그런데 내부도전막(D)은 스프레이(spray)방식등에 의해 매우 얇은 두께로 도포형성된 것이므로 게터(G)와의 접촉부위가 그 탄성에 의해 마모되어, 음극선관(T)에 외부충격등이 가해질시 내부도전막(D)이 탈락되는 문제가 발생되었다. 이와같이 탈락된 내부도전막(D) 이물은 섀도우마스크(M)의 구멍막힘 불량을 유발시킬뿐 아니라 전자총(E)을 오염시켜 동작시 전극간에 스파크(spark)가 발생되는 등 그 내압품위를 크게 저하시키게 된다. 그러므로 종래에는 화질저하등 음극선관(T)의 품위와 신뢰성을 보장할 수 없었다.However, since the inner conductive film D is formed by a very thin thickness by a spray method or the like, the contact part with the getter G is worn by its elasticity, and when the external shock is applied to the cathode ray tube T, the inner part The problem that the conductive film D fell off occurred. The foreign conductive film (D) that has been removed in this way not only causes the hole of the shadow mask (M) to be clogged, but also contaminates the electron gun (E), causing a large drop in the pressure-resistance quality, such as sparking between electrodes during operation. Let's go. Therefore, the quality and reliability of the cathode ray tube T cannot be guaranteed in the related art.
본 발명의 목적은 이러한 종래의 문제점을 감안하여 게터에 의한 이물탈락을 방지할 수 있는 음극선관의 내부도전막을 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide an inner conductive film of a cathode ray tube which can prevent foreign matters falling off by a getter in view of such a conventional problem.
본 발명의 다른 목적은 상술한 내부도전막을 형성하는데 적합한 방법을 제공하는 것이다.Another object of the present invention is to provide a method suitable for forming the above-described internal conductive film.
상술한 첫번째 목적을 달성하기 위해 본 발명에 의한 음극선관의 내부도전막은, 펀낼의 내면에 도포되어 전자총에 고전압을 연결해주는 음극선관의 내부도전막에 있어서, 그 소정부위에 미도포부가 형성되는 것을 특징으로 한다.In order to achieve the first object described above, the inner conductive film of the cathode ray tube according to the present invention is coated on the inner surface of the funnel to connect the high voltage to the electron gun. It features.
본 발명 내부도전막의 한 바람직한 특징에 의하면, 미도포부가 게터설치위치에 대응한다.According to one preferred feature of the inner conductive film of the present invention, the uncoated portion corresponds to the getter installation position.
상술한 두번째 목적을 달성하기 위해 본 발명에 의한 음극선관의 내부도전막 형성방법은, 펀넬 내면에 전자총에 고전압을 연결해주며 소정부위에 미도포부가 형성된 내부도전막을 형성하는 방법에 있어서, 펀넬 내면의 소정위치에 가림판을 위치시키고 내부도전막을 도포하는 것을 특징으로 한다.In order to achieve the above-described second object, the method for forming the inner conductive film of the cathode ray tube according to the present invention is a method for forming an inner conductive film having an uncoated portion formed at a predetermined portion by connecting a high voltage to an electron gun on an inner surface of the funnel. The shielding plate is positioned at a predetermined position, and the inner conductive film is coated.
이에따라 본 발명은, 게터가 내부도전막에 접촉하지 않으므로 종래와 같은 내부도전막의 탈락을 근본적으로 방지할 수 있어 음극선관의 화질과 신뢰성향상등에 효과를 발휘한다.Accordingly, in the present invention, since the getter does not come into contact with the inner conductive film, it is possible to fundamentally prevent the fall of the inner conductive film as in the prior art, which is effective in improving the image quality and reliability of the cathode ray tube.
이하 첨부된 도면을 참조하여 본 발명의 한 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제2도에서, 펀낼(F)의 내면에는 아노드전압을 전자총(E)에 연결해주며 전자빔의 2차전자를 흡수하는 내부도전막(D)이 도포형성된다. 내부도전막(D)의 소정부위에는 본 발명의 특징에 따라 미도포부(C)가 형성된다. 이 미도포부(C)는 도시된 바와같이 음극선관(T)의 진공도를 향상시키기 위한 게터(G)의 설치위치에 대응하는데, (a)에 도시된 예는 게터(G)가 게터스프링(S)을 통해 섀도우마스크(제1도의 M)를 지지하는 프레임(F)에 지지된 경우이고, (b)에 도시된 예는 전자총(E)에 지지된 경우이다. 즉 본 발명 내부도전막(D)의 미도포부(C)는 게터(G)의 설치방식에 관계없이 그 설치위치에 대응하는 부위에 형성된다. 이러한 미도포부(C)는 내부도전막(D)이 게터(G)와 접촉하지 않는 범위에서 적절한 크기로 형성되는 것이 바람직하다. 이에따라 본 발명은 게터(G)가 내부도전막(D)에 탄성접촉하는 종래와는 달리 미도포부(C)를 통해 펀넬(F)의 내면에 접촉하게 되므로 내부도전막(D)으로부터의 이물탈락이 근본적으로 방지된다.In FIG. 2, an inner conductive film D is formed on the inner surface of the funnel F to connect the anode voltage to the electron gun E and absorb the secondary electrons of the electron beam. The uncoated portion C is formed in a predetermined portion of the inner conductive film D according to the features of the present invention. This uncoated portion C corresponds to the installation position of the getter G for improving the vacuum degree of the cathode ray tube T as shown in the drawing. In the example shown in (a), the getter G is a getter spring S. Is supported by the frame F supporting the shadow mask (M in FIG. 1), and the example shown in (b) is supported by the electron gun E. That is, the uncoated portion C of the inner conductive film D of the present invention is formed at a portion corresponding to the installation position regardless of the installation method of the getter G. The uncoated portion C is preferably formed in an appropriate size in a range where the internal conductive film D does not contact the getter G. Accordingly, the present invention, unlike the prior art that the getter (G) is in elastic contact with the inner conductive film (D), the foreign material is removed from the inner conductive film (D) because the contact with the inner surface of the funnel (F) through the uncoated portion (C) This is fundamentally prevented.
한편 제3도에는 이와같은 본 발명 내부도전막(D)을 형성하는데 접합한 한 방법을 도시하고 있다.On the other hand, FIG. 3 shows one method bonded to form the internal conductive film D of the present invention.
본 발명의 내부도전막(D) 형성방법은 통상의 방법과 마찬가지로 스트레이방식에 의해 펀넬(F)의 내면에 도포형성하는데, 본 발명의 특징에 따라 펀넬(F) 내면의 소정부위에 분사액을 차단하는 가림판(U)을 위치시키고 분사한다. 즉 거치대(B)상에 내부도전막(D)을 형성할 펀넬(F)을 거치하고, 게터(G) 설치위치와 대응하는 부위의 펀넬(F) 내면에 소정크기의 가림판(U)을 위치시킨다. 이러한 가림판(U)을 위치시키는 방법은 여러 가지로 구성될 수 있는데, 바람직하기로는 판스프링등의 탄성체(L)로 거치대(B)에 지지시켜 펀넬(F)의 안착시 이에 탄성접촉하도록 구성할 수 있다. 다음 펀넬(F)의 네크(neck; N)를 네크마개(A)로 막은 뒤, 그 하부에서 노즐(nozzl; Z)등으로 도포액을 분사한다. 그러면 가림판(U)이 설치된 펀넬(F)의 소정부위에 내부도전막(D)이 형성되지 않게 됨으로써, 미도포부(C)가 형성된 내부도전막(D)을 형성하게 된다.The internal conductive film (D) forming method of the present invention is applied to the inner surface of the funnel (F) by the stray method as in the conventional method, according to the characteristics of the present invention is sprayed to a predetermined portion of the inner surface of the funnel (F) Position and spray the blocking plate (U) to block. That is, the funnel (F) to form the inner conductive film (D) is formed on the holder (B), and the screening plate (U) of a predetermined size on the inner surface of the funnel (F) of the portion corresponding to the getter (G) installation position. Position it. The method of placing the shielding plate (U) may be configured in various ways, preferably, it is configured to be elastically in contact with the mounting plate (B) by the elastic body (L), such as a leaf spring, when the funnel (F) is seated. can do. Next, the neck (N) of the funnel (F) is closed with a neck stopper (A), and then the coating liquid is sprayed to the nozzle (nozzl; Z) or the like from the bottom thereof. As a result, the inner conductive film D is not formed at a predetermined portion of the funnel F in which the shielding plate U is installed, thereby forming the inner conductive film D having the uncoated portion C formed thereon.
이상에서 살펴본 바와같이 본 발명에 의하면, 게터가 내부도전막에 접촉하지 않으므로 종래와 같은 내부도전막 이물탈락을 근본적으로 방지할 수 있다. 이에 따라 본 발명은 음극선관의 화질 및 신뢰성을 크게 향상시키는 효과가 있다.As described above, according to the present invention, since the getter does not come into contact with the inner conductive film, it is possible to fundamentally prevent the fall of the inner conductive film as in the prior art. Accordingly, the present invention has the effect of greatly improving the image quality and reliability of the cathode ray tube.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940023156A KR100195295B1 (en) | 1994-09-14 | 1994-09-14 | Inner conductive layer of cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940023156A KR100195295B1 (en) | 1994-09-14 | 1994-09-14 | Inner conductive layer of cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960012260A KR960012260A (en) | 1996-04-20 |
| KR100195295B1 true KR100195295B1 (en) | 1999-06-15 |
Family
ID=19392692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940023156A KR100195295B1 (en) | 1994-09-14 | 1994-09-14 | Inner conductive layer of cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100195295B1 (en) |
-
1994
- 1994-09-14 KR KR1019940023156A patent/KR100195295B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960012260A (en) | 1996-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR850001589B1 (en) | Color display tube having heavy metal coating on color selection electrode | |
| US4220893A (en) | Electrically resistive arc suppressor shadowing getter flash | |
| KR100318337B1 (en) | Shadow mask damping structure for color cathode ray tube | |
| US2508001A (en) | High-voltage cathode-ray tube corona ring | |
| US20020105262A1 (en) | Slim cathode ray tube and method of fabricating the same | |
| US3979632A (en) | Cathode ray tube having surface charge inhibiting means therein | |
| KR100195295B1 (en) | Inner conductive layer of cathode ray tube | |
| US4503357A (en) | Cathode-ray tube | |
| US4403170A (en) | Color picture tubes | |
| JPH023262B2 (en) | ||
| US5369330A (en) | Damp rod construction for CRT grid structures | |
| US4713578A (en) | Getter assembly with diffusion directing structure | |
| US4137480A (en) | Television picture tube with cathode coating erosion suppression | |
| US5820921A (en) | Method of producing a cathode ray tube | |
| US6504296B2 (en) | Tube neck for cathode ray tube | |
| US4193016A (en) | Electron gun shield cup providing tube evacuation bypass vents | |
| US6376979B1 (en) | Color cathode ray tube moving two inner conductive layer with different resistance | |
| KR200203872Y1 (en) | Cathode ray tube | |
| JPS60218746A (en) | Cathode-ray tube | |
| KR940006966Y1 (en) | Panel having stud pin deposited with aluminum | |
| KR950000199Y1 (en) | Cathode-ray tube having anti-discharge device | |
| KR0124968Y1 (en) | Color cathode ray tube | |
| KR0113524Y1 (en) | Stud pin of cathode-ray tube | |
| KR100439269B1 (en) | The C-CRT | |
| JP2504124Y2 (en) | Electron gun assembly for cathode ray tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application | ||
| J201 | Request for trial against refusal decision | ||
| B701 | Decision to grant | ||
| GRNT | Written decision to grant | ||
| LAPS | Lapse due to unpaid annual fee |