KR920004558B1 - Developing method crt - Google Patents

Developing method crt Download PDF

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Publication number
KR920004558B1
KR920004558B1 KR1019890019442A KR890019442A KR920004558B1 KR 920004558 B1 KR920004558 B1 KR 920004558B1 KR 1019890019442 A KR1019890019442 A KR 1019890019442A KR 890019442 A KR890019442 A KR 890019442A KR 920004558 B1 KR920004558 B1 KR 920004558B1
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panel glass
inside surface
exposing
exposed
panel
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KR1019890019442A
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Korean (ko)
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KR910013366A (en
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박경순
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삼성전관 주식회사
김정배
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/20Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

The light-exposing method of color cathode ray tube is characterized by (A) washing the inside surface of panel glass (1) with fluoric acid and pure water, (B) spray coating the inside surface with positive photosensitive liquid to form photosensitive layer (2), (C) fixing skirt shielding frame (6) with stud pins (4,4') on the inside surface of panel glass (1), and (D) exposing the coated panel glass to light source (3) so that skirt part (8) of (1) is not exposed to light, which is hidden by flange (5) of frame (6). By this method on skirt part (8) of panel glass (1) is deposited only aluminium layer since the photosensitive liquid coated on (8) is removed during washing process.

Description

칼라 브라운관의 노광방법Exposure method of color CRT

제 1 도는 본 발명에 따른 노광방법을 나타내는 도면.1 shows an exposure method according to the present invention.

제 2 도는 종래의 노광방법을 나타내는 도면.2 is a view showing a conventional exposure method.

제 3 도는 종래의 노광방법에 따라 노광된 상태를 나타내는 부분 확대단면도이다.3 is a partially enlarged cross-sectional view showing a state exposed in accordance with a conventional exposure method.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 패널 글라스 2 : 감광층1 panel glass 2 photosensitive layer

6 : 프레임 8 : 스커트부6: frame 8: skirt

본 발명은 칼라 브라운관의 노광방법에 관한 것으로서, 더욱 상세하게는 노광과정중에 불필요하게 패널 내면의 스커트부까지 노광되지 않게 한 칼라브라운광의 노광방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exposure method of a color CRT, and more particularly, to an exposure method of color brown light, which is not exposed to the skirt portion of the inner surface of the panel unnecessarily during the exposure process.

칼라 브라운관의 패널 내측면에 형성되는 칼라 형광막은 통상적으로 패널내면에 네가티브 감광액을 도포하고 패턴 마스크를 개재하여 노광한 다음, 노광부만 에칭처리하고 여기에 형광치 슬러리를 채워 넣는 슬러리법으로 행함이 일반적이다.The color fluorescent film formed on the inner surface of the panel of the color CRT is generally applied by applying a negative photoresist on the inner surface of the panel, exposing through a pattern mask, and then etching the exposed portion and filling the slurry with the fluorescent value. to be.

칼라형광막 R, G, B의 세가지 형광체를 일정순서로 패턴화하여 되는 것이므로 형광체 슬러리는 R, G, B종류별로 3회 투여된다. 그런데 R, G, B 각 형광체는 패널의 글라스면과 친화력이 없기 때문에 형광막을 형성하기 이전에 소정의 처리를 행해 둘 필요가 있다.Since the three phosphors of the color fluorescent film R, G, and B are patterned in a certain order, the phosphor slurry is administered three times for each of the R, G, and B types. By the way, since each phosphor of R, G, and B has no affinity with the glass surface of a panel, it is necessary to perform predetermined | prescribed process before forming a fluorescent film.

종래에는 소위 하도액이라 칭하는 포지티브 감광액을 패널의 내측면 전체에 도포하고 전체노광을 행함으로써 패널 내측면에 얇은 수지층이 코오팅되게 함으로써 각 형광체는 이 수지층을 개재하여 부착 유지되게하고 있다.Conventionally, a positive photoresist called so-called undercoating liquid is applied to the entire inner surface of the panel and subjected to total exposure so that a thin resin layer is coated on the inner surface of the panel so that each phosphor is held attached via this resin layer.

상기한 하도액을 노광하는 종래의 방법은 제 2 도에 나타낸 바와 같이 패널 글라스(G)의 내면 전체에 하도액을 도포하여 감광층(E)을 형성한 후, 광원(H)을 통해 패널 글라스(G)의 전체면을 노광하는 방식으로 행하고 있다.In the conventional method of exposing the above-mentioned undercoating solution, as shown in FIG. 2, the undercoating solution is applied to the entire inner surface of the panel glass G to form the photosensitive layer E, and then the panel glass through the light source H. The whole surface of (G) is performed by exposing.

이렇게 전체노광을 행한 다음에는 R, G, B형광체 패턴을 차례로 형성하고, 그 위로 수지층을 도포한 다음 알루미늄을 증착하여 메탈 백이 형성되게 하고, 이어서 최종적으로 420~425℃에서 30분간 소성하여 불순물과 각종 유기물 및 함유된 습기를 열분해하여 형광막 형성공정을 마치게 된다.After the whole exposure, R, G, and B phosphor patterns were formed in order, a resin layer was applied thereon, and then aluminum was deposited to form a metal back, and then finally baked at 420 to 425 ° C. for 30 minutes to form impurities. And thermal decomposition of various organic substances and moisture contained therein to complete the process of forming a fluorescent film.

그런데 종래의 방법에 의하면, 하도액의 노광시에 불필요한 패널 글라스의 스커트부까지 노광되어 제 3 도의 도시와 같이 잔류하게 되며, 이렇게 잔류하는 하도액은 소성공정에서 부풀어 올라 그 위로 증착된 알루미늄(A)을 균열시켜 알루미늄 입자가 떨어져 나가는 하는 문제를 종종 일으키고 있다.However, according to the conventional method, the exposed portion of the panel glass is exposed to the skirt portion of the unnecessary panel glass during exposure of the undercoat liquid and remains as shown in FIG. ) Is often cracked, causing aluminum particles to fall off.

상기한 알루미늄입자는 추후의 제진공정에서 제거될 수 있으나, 만약에 새도우 마스크의 미세한 어퍼쳐(aperure)를 막아 버리면 쉽사리 제거되지도 않고, 게다가 어퍼쳐가 막힘에 따라 화상이 고르지 않게 되어 최종 제품의 불량률을 높이는 원인으로 된다.The aluminum particles may be removed in a subsequent dust removal process, but if the fine aperture of the shadow mask is blocked, the aluminum particles may not be easily removed, and the image may be uneven due to the blockage of the final product. It will cause the defect rate to increase.

본 발명은 상기한 바와 같은 종래 기술의 문제점을 해결하기 위하여 발명된 것으로 본 발명의 목적은 하도액을 도포한 후 노광함에 있어서, 불필요한 패널 글라스의 스커트부는 노광이 되지 않도록 하여 세정단계에서 깨끗이 씻겨 나가게 할 수 있는 칼라브라운관의 노광 방법을 제공하는데 있다.The present invention has been invented to solve the problems of the prior art as described above is an object of the present invention in the exposure after applying the coating solution, so that the skirt portion of the unnecessary panel glass is not exposed so that it is washed clean in the cleaning step The present invention provides a method for exposing a color brown tube.

이하에 본 발명의 바람직한 실시예를 첨부한 도면 제 1 도에 따라서 더욱 상세하게 설명한다.Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to FIG. 1.

제 1 도는 본 발명의 칼라 브라운관의 노광방법을 설멸하기 위한 도면으로서 먼저 패널글라스(1)의 내면을 불산과 순수로서 깨끗하게 세정한 후 포지티브 감광액을 하도액으로 하여 스프레이 도포시켜 감광층(2)을 형성시킨다.FIG. 1 is a view for erasing the exposure method of the color CRT according to the present invention. First, the inner surface of the panel glass 1 is cleaned cleanly with hydrofluoric acid and pure water, and then a positive photoresist is used as a subconductor to spray the photosensitive layer 2. To form.

패널 글라스(1)내의 세정은 그 표면에 잔류하는 불순물을 제거함과 동시에 패널 글라스(1)의 내면과 감광액과의 접착력을 강화시키기 위하여 행한다.The cleaning in the panel glass 1 is performed to remove impurities remaining on the surface of the panel glass 1 and to enhance the adhesion between the inner surface of the panel glass 1 and the photosensitive liquid.

감광측(2)이 형성되고나면, 패널 글라스(1)의 내주면에 설치된 스터드핀(4)(4')으로 스커트 시일드용 프레임(6)을 장착시킨다.After the photosensitive side 2 is formed, the skirt shield frame 6 is attached to the stud pins 4 and 4 'provided on the inner circumferential surface of the panel glass 1.

스커트 시일드용 프레임(6)은 칼라 브라운관의 내장부품으로 되는 새도우 마스크 프레임에서 새도우 마스크를 떼어낸 통상의 새도우 마스크 지지용 프레임을 그대로 적용한 것으로서 이것을 패널 글라스(1)의 전면 노광에 아무런 지장을 주지 않는다.The frame for the skirt seal 6 applies the normal shadow mask support frame from which the shadow mask is removed from the shadow mask frame, which is a built-in component of the color CRT, without affecting the entire surface exposure of the panel glass 1. .

다음에 광원(3)을 점등시켜서 소정시간 노광한다. 이렇게 하여 노광을 행하면 빛은 프레임(6)의 플랜지(5)에 의해 가리워져서 노광이 필요치 않은 스커트부(8)는 노광이 되지 않고, 피널 글라스(1)의 내측면에만 전면 노광이 이루어지게 된다. 따라서 패널 글라스(1)의 스커트부(8)에 도포된 하도액은 세정공정에서 씻겨져 제거되므로 이후의 알루미늄 증착공정을 거친후에는 패널 글라스(1)의 스커트부(8)에는 단지 알루미늄층이 존재하게 될 뿐이다.Next, the light source 3 is turned on and exposed for a predetermined time. When the exposure is performed in this way, the light is covered by the flange 5 of the frame 6 so that the skirt portion 8 which does not need exposure is not exposed, and the entire surface is exposed only on the inner surface of the final glass 1. . Therefore, since the undercoat liquid applied to the skirt portion 8 of the panel glass 1 is washed and removed in the cleaning process, only an aluminum layer is present in the skirt portion 8 of the panel glass 1 after the aluminum deposition process. I will only do it.

그러므로 본 발명에 의하면, 패널 글라스(1)의 스커트부분에 증착된 알루미늄막의 밑에는 하도액이 존재하지 않게 되므로 이 부분이 소정단계에서 부풀어 오르는 일도 없게 되어 종래의 문제점을 해결할 수 있게 되는 것이다.Therefore, according to the present invention, since the undercoat liquid does not exist under the aluminum film deposited on the skirt portion of the panel glass 1, this portion does not swell in a predetermined step, thereby solving the conventional problem.

Claims (1)

패널 글라스(1)의 내면에 하도액을 도포하고 전면 노광함에 있어서, 스커트 시일드용 프레임(6)을 상기한 패널 글라스(1)의 내측 스터드핀(4)(4')에 장착하고 전면 노광을 행하여 상기한 패널 글라스(1)의 스커트부(8)로 조사되는 빛이 프레임(6)의 플랜지(5)에 의해 가리워져서 노광되지 않게 함을 특징으로 하는 칼라브라운관의 노광방법.In applying the undercoat liquid to the inner surface of the panel glass 1 and exposing the front surface, the skirt shield frame 6 is mounted on the inner stud pins 4 and 4 'of the panel glass 1 and the front exposure is performed. And the light irradiated to the skirt portion (8) of the panel glass (1) is covered by the flange (5) of the frame (6) so as not to be exposed.
KR1019890019442A 1989-12-23 1989-12-23 Developing method crt KR920004558B1 (en)

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KR1019890019442A KR920004558B1 (en) 1989-12-23 1989-12-23 Developing method crt

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KR1019890019442A KR920004558B1 (en) 1989-12-23 1989-12-23 Developing method crt

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KR910013366A KR910013366A (en) 1991-08-08
KR920004558B1 true KR920004558B1 (en) 1992-06-08

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