KR930009469B1 - Fluorescent display tube and manufacturing method of the same - Google Patents
Fluorescent display tube and manufacturing method of the same Download PDFInfo
- Publication number
- KR930009469B1 KR930009469B1 KR1019910009431A KR910009431A KR930009469B1 KR 930009469 B1 KR930009469 B1 KR 930009469B1 KR 1019910009431 A KR1019910009431 A KR 1019910009431A KR 910009431 A KR910009431 A KR 910009431A KR 930009469 B1 KR930009469 B1 KR 930009469B1
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- KR
- South Korea
- Prior art keywords
- conductive material
- insulating layer
- fluorescent display
- frit
- display tube
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/15—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with ray or beam selectively directed to luminescent anode segments
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
- H01J9/148—Manufacture of electrodes or electrode systems of non-emitting electrodes of electron emission flat panels, e.g. gate electrodes, focusing electrodes or anode electrodes
Abstract
Description
제 1 도는 종래의 형광표시관을 보인 입단면도.1 is a cross-sectional view showing a conventional fluorescent display tube.
제 2 도는 본 발명에 형광표시관의 입단면도.2 is a cross-sectional view of a fluorescent display tube according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
21 : 유리기판 22 : 배선층21: glass substrate 22: wiring layer
23 : 절연층 24 : 프리트23: insulating layer 24: frit
25,26,27 : 그리드 30 : 블록부25, 26, 27: grid 30: block portion
본 발명은 형광표시관 및 그 제조방법에 관한 것으로서, 더 상세하게는 열전자를 제어하는 그리드 단자간의 단락(短絡)을 방지하도록 개선된 형광표시관 및 그 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent display tube and a method for manufacturing the same, and more particularly, to a fluorescent display tube and an improved method for preventing short circuit between grid terminals for controlling hot electrons.
일반적으로 디지탈화된 계측기, 가전제품의 디지탈 표시장치등의 광범위한 분야에서 숫자와 부호 또는 도형등의 정보를 시각화하여 표시하도록 된 형광표시관은 열전자를 방출하는 필라멘트와 애노드전압이 인가되어 열전자를 받아들이며 그 표면에 형광물질이 도포된 세그멘트 및 상기 필라멘트와 세그멘트 사이에 위치하여 열전자를 제어하는 그리드등이 하나의 진공튜브의 내측에 마련된 것이다.In general, fluorescent display tubes designed to visualize and display information such as numbers, symbols, or figures in a wide range of fields such as digitalized measuring instruments and digital display devices of home appliances are applied to hot electrons by applying a filament and an anode voltage to emit hot electrons. Segments coated with a fluorescent material on the surface and a grid for controlling hot electrons located between the filaments and the segments are provided inside the one vacuum tube.
제 1 도는 상기 그리드(2)(3)(4)를 전원이 인가되는 배선층(5)에 고정한 종래 형광표시관을 나타낸다.1 shows a conventional fluorescent display tube in which the grids 2, 3, 4 are fixed to the wiring layer 5 to which power is applied.
이것은 유리기판(6)상에 은(Ag)을 페이스트(paste)상태로 인쇄하여 소성에 의해 배선층(5)을 형성하고, 그 상면에 절연층(7)을 인쇄하여 이 절연층(7)의 일부위에 이의 상면과 상기 배선층(5)이 연통되는 스루우홀(through hole ; 5')을 형성하여 된 절연층(7)을 소성에 의해 형성하고, 상기 스루우홀(5')에 도전성물질(8)을 개재하여 상기 배선층(5)과 접속시키고 그 상면에 상기 그리드단자(2')(3')(4')을 얹고 상기 절연층(7)과 도전성물질(8)과 그리드단자(2')(3')(4')를 감싸도록 플리트(9)를 도포한 후 소성하고 고착시켜서 형광표시관을 제조한다.This is done by printing silver (Ag) in a paste state on the glass substrate 6 to form a wiring layer 5 by firing, and printing an insulating layer 7 on the upper surface thereof to form the wiring layer 5. An insulating layer 7 formed by forming a through hole 5 'through which the upper surface thereof and the wiring layer 5 is communicated is formed by firing, and a conductive material 8 is formed in the through hole 5'. The wiring layer 5 is connected to the wiring layer 5 and the grid terminals 2 ', 3' and 4 'are placed on the upper surface thereof, and the insulating layer 7, the conductive material 8, and the grid terminal 2' are mounted on the upper surface thereof. The pleats 9 are coated to surround the 3 'and 4', and then fired and fixed to manufacture a fluorescent display tube.
이와같이 제조된 형광표시관은 상기 도전성 물질(8), 프리트(9)를 소성하는 공정중에 상기 프리트(9)가 표면장력에 의해 뭉쳐지게 되므로 각 그리드단자(2')(3')(4')의 하부에 마련된 도전성물질(8)이 상기 절연층(7) 상면과 프리트(9)사이로 흘러서 각 그리드(2)(3)(4)간에 단락현상이 나타나는 문제점이 있었다.In the fluorescent display tube manufactured as described above, the frit 9 is agglomerated by surface tension during the process of firing the conductive material 8 and the frit 9, so that each grid terminal 2 ', 3', 4 'is applied. The conductive material (8) provided in the lower portion of the c) flows between the upper surface of the insulating layer (7) and the frit (9), causing a short circuit between the grids (2) (3) and (4).
본 발명의 목적은 상기한 문제점을 해결하기 위한 것으로 그리드단자간에 단락현상을 방지할 수 있는 형광표시관을 제공하는데 있다.An object of the present invention to solve the above problems is to provide a fluorescent display tube that can prevent a short circuit between the grid terminal.
상기한 목적을 달성하기 위하여 본 발명에 따른 형광표시관은, 유리기판의 상면에 배선층이 형성되고, 그 상면에 복수의 스루우홀이 형성된 절연층이 형성되고, 상기 각 스루우홀에 도전성 물질을 개재하여 이 도전성 물질 상면에 이에 대응하는 각 그리드단자를 얹고 상기 절연층, 도전성 물질, 그리드단자를 감싸서 소성 형성한 프리트를 포함하여 된 형광표시관에 있어서, 상기 각 스루우홀 사이의 절연층 상면에 상기 각 스루우홀 사이를 구획하는 블록부가 마련되어 상기 프리트와 도전성 물질의 소성 공정시 각 스루우홀에 개재된 도전성 물질 상호간의 단락현상이 방지되도록 한 것을 특징으로 한다.In order to achieve the above object, in the fluorescent display tube according to the present invention, a wiring layer is formed on an upper surface of the glass substrate, an insulating layer having a plurality of through holes is formed on the upper surface thereof, and a conductive material is interposed between the through holes. And a frit formed by placing the grid terminal corresponding to the conductive material on the upper surface of the conductive material, and covering the insulating layer, the conductive material, and the grid terminal and firing the same, wherein the upper surface of the insulating layer between the through holes is formed. A block portion partitioning between the through holes is provided to prevent a short circuit between the conductive materials interposed in the through holes during the firing process of the frit and the conductive material.
상기한 구조의 형광표시관을 제조하는데 적합한 제조방법은, 상기 각 스루우홀 사이의 절연층 상면에 볼록부를 형성하는 공정을 포함하여 된 것을 특징으로 한다.A manufacturing method suitable for manufacturing the fluorescent display tube of the above structure is characterized in that it comprises a step of forming a convex portion on the upper surface of the insulating layer between each through hole.
이하 첨부된 도면을 참조하면서 본 발명의 한 바람직한 실시예를 상세히 설명한다.Hereinafter, one preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 형광표시관은 제 2 도에 나타낸 바와같이 종래 형광표시관의 일반적인 구성요소를 가진다. 유리기판(21)상에 은(Ag)을 페이스트(paste)상태로 인쇄하여 소성하거나 알루미늄(Al)을 스퍼터링하여 된 배선층(22)이 형성된다. 상기 배선층(22) 상면에 초자안료 등으로 된 절연층(23)이 형성되고, 이 절연층(23)의 상면에는 상기 배선층(22)과의 전기적 접속을 가능케 하는 스루우홀(23')이 마련된다. 이 스루우홀(23')에 도전성물질(28)이 충진되어 상기 배선층(22)과 접속시킨다. 그리고 배선층(22)의 상면에 열전자를 제어하는 그리드(25)(26)(27)을 얹고 상기 절연층(23)과 도전성물질(28)과 그리드단자(25')(26')(27')가 접속되도록 프리트(24)로 고착한다. 이와같은 구조의 형광표시관에 있어서 상기 스루우홀(23')사이의 절연층(23)상면에는 본 발명의 특징적 요소인 블록부(30)(31)가 형성된다.The fluorescent display tube according to the present invention has a general component of a conventional fluorescent display tube as shown in FIG. On the glass substrate 21, a wiring layer 22 formed by printing silver (Ag) in a paste state and baking or sputtering aluminum (Al) is formed. An insulating layer 23 made of porcelain pigment or the like is formed on the upper surface of the wiring layer 22, and a through hole 23 ′ is provided on the upper surface of the insulating layer 23 to enable electrical connection with the wiring layer 22. do. The through hole 23 ′ is filled with a conductive material 28 to be connected to the wiring layer 22. And the grid 25, 26, 27 to control the hot electrons on the upper surface of the wiring layer 22, the insulating layer 23, the conductive material 28, the grid terminals 25 '(26') (27 ') ) Is fixed to the frit 24 to be connected. In the fluorescent display tube having such a structure, block portions 30 and 31, which are characteristic elements of the present invention, are formed on the upper surface of the insulating layer 23 between the through holes 23 '.
본 발명에 의한 형광표시관의 볼록부(30)를 형성하는 제 1 제조방법은 다음과 같다.A first manufacturing method for forming the convex portion 30 of the fluorescent display tube according to the present invention is as follows.
종래의 제조방법과 마찬가지로 유기기판(21)상에 도전성금속(Al)을 스퍼터링하여 증착한 후 포토에칭(photo-etching)하여 배선층(22)을 형성하고, 이 배선층(22)의 상면과 후공정에서 형성되는 도전성 물질이 전기적으로 연결하도록 스루우홀(23')이 형성된 절연층(23)을 형성한 후, 상기 스루우홀(23') 사이의 절연층(23)상면에 스크린 인쇄법으로 볼록부(30)를 형성한다. 여기에서 상기 볼록부(30)는 사실상 상기 절연층(23)의 재질과 동일한 재질을 사용하였다. 이것은 상기 볼록부(30)와 절연층(23)과의 상호간의 친화력 문제에 따른 것이다.As in the conventional manufacturing method, the conductive metal (Al) is sputtered and deposited on the organic substrate 21, followed by photoetching to form the wiring layer 22, and the upper surface and the post-process of the wiring layer 22. After forming the insulating layer 23 formed with the through hole (23 ') so that the conductive material formed in the electrical connection, the convex portion on the upper surface of the insulating layer 23 between the through hole (23') by screen printing method 30 is formed. Herein, the convex portion 30 uses substantially the same material as the material of the insulating layer 23. This is due to affinity problems between the convex portion 30 and the insulating layer 23.
그리고 상기 볼록부(30)를 형성하는 제 2 제조방법은 절연층(23)상면의 가장자리 부위를 식각(蝕刻)하여서 그 중앙부위보다 낮게하여 볼록부(30)를 형성한다. 상기와 같은 제 1,2 제조방법을 통해 볼록부(30)를 형성한 다음, 통상의 방법과 마찬가지로 상기 스루우홀(23')에 도전성물질(28)을 충진하여 상기 배선층(22)과 전기적으로 접속되도록 하고, 상기 도전성물질(28) 상면에 그리드단자(25')(26')(27')을 얹은 다음 상기 절연층(23), 그리드단자(25')(26')(27'), 도전성물질(28)을 감싸도록 프리트(24)를 도포하고 소성하여 형성한다.In the second manufacturing method of forming the convex portion 30, the edge portion of the upper surface of the insulating layer 23 is etched to be lower than the central portion thereof to form the convex portion 30. After forming the convex portion 30 through the first and second manufacturing methods as described above, the conductive material 28 is filled in the through hole 23 'in the same manner as the conventional method, and electrically connected to the wiring layer 22. And the grid terminals 25 ', 26', 27 'on the top surface of the conductive material 28, and then the insulating layer 23, the grid terminals 25', 26 ', 27'. The frit 24 is coated and baked to surround the conductive material 28.
상술한 바와같은 제조공정을 거쳐 제조된 형광표시관은 상기 공정중 절연층(23), 그리드단자(25')(26')(27'), 도전성물질(28)와 프리트(24)를 소성할때에 상기 프리트(24)가 표면장력에 의해 뭉쳐져 상기 도전성물질(28)이 상기 절연층(23)과 프리트(24)사이로 흘러서 번져 나가더라도 상기 볼록부(30)에 의해 차단되게 된다. 따라서 상기 각 스루우홀(23')에 형성된 도전성물질(28)상호간의 단락현상이 방지되게 되며, 이것으로 종래 절연층 상면에 볼록부가 형성되지 않았던 것과는 달리 본 발명의 형광표시관은 제조작업중 상기의 단락현상을 방지하기 위한 어떠한 조치도 불필요하게 된다.The fluorescent display tube manufactured through the manufacturing process described above fires the insulating layer 23, the grid terminals 25 ', 26', 27 ', the conductive material 28 and the frit 24 during the process. When the frit 24 is agglomerated by surface tension, the conductive material 28 is blocked by the convex portion 30 even though the conductive material 28 flows between the insulating layer 23 and the frit 24 and spreads. Accordingly, short circuiting between the conductive materials 28 formed in the through holes 23 'is prevented. Thus, unlike the case where the convex portion is not formed on the upper surface of the insulating layer, the fluorescent display tube of the present invention is manufactured as described above. No action is necessary to prevent short circuits.
Claims (4)
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KR1019910009431A KR930009469B1 (en) | 1991-06-07 | 1991-06-07 | Fluorescent display tube and manufacturing method of the same |
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KR1019910009431A KR930009469B1 (en) | 1991-06-07 | 1991-06-07 | Fluorescent display tube and manufacturing method of the same |
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KR930001293A KR930001293A (en) | 1993-01-16 |
KR930009469B1 true KR930009469B1 (en) | 1993-10-04 |
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KR1019910009431A KR930009469B1 (en) | 1991-06-07 | 1991-06-07 | Fluorescent display tube and manufacturing method of the same |
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