KR930009466B1 - Plate type picture display apparatus - Google Patents
Plate type picture display apparatus Download PDFInfo
- Publication number
- KR930009466B1 KR930009466B1 KR1019910009429A KR910009429A KR930009466B1 KR 930009466 B1 KR930009466 B1 KR 930009466B1 KR 1019910009429 A KR1019910009429 A KR 1019910009429A KR 910009429 A KR910009429 A KR 910009429A KR 930009466 B1 KR930009466 B1 KR 930009466B1
- Authority
- KR
- South Korea
- Prior art keywords
- electrode
- line cathode
- hot electrons
- line
- display device
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
-
- 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
Description
제 1 도는 종래 평면형 화상표시장치의 일예를 도시한 일부 절제사시도.1 is a partial ablation perspective view showing an example of a conventional flat image display device.
제 2 도는 본 발명에 따른 평면형 화상표시장치를 도시한 것으로서, (a)는 측단면도이고, (b)는 (a)에 도시된 가속전극을 발췌하여 도시한 사시도.2 is a side view of a planar image display device according to the present invention, (a) is a side cross-sectional view, and (b) is a perspective view showing an acceleration electrode shown in (a).
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11 : 배면전극 12 : 라인캐소오드11 back electrode 12 line cathode
13 : 가속전극 14 : 에노우드전극13 acceleration electrode 14 enwood electrode
13a : (가속전극의)곡면부 14a : 형광체층13a: curved portion (of the accelerating electrode) 14a: phosphor layer
본 발명의 평면형 화상표시장치에 관한 것으로서, 더 상세하게는 라인캐소오드로부터 방출된 전자빔을 가속 및 제어하는 화상표시장치의 가속전극에 관한 것이다.The present invention relates to a planar image display device, and more particularly, to an acceleration electrode of an image display device for accelerating and controlling an electron beam emitted from a line cathode.
통상적으로 배선층과 도선층 및 형광체층이 그 상면에 순차적으로 적층된 기판과 상기 기판상에 상호 소정간격 이격되도록 설치된 가속전극 및 라인캐소오드를 구비하여 된 형광표시관이나 배면글래스, 배면전극, 라인캐소오드 가속전극 및 형광체층이 코팅된 전면글래스 등을 구비하여 된 평면형 칼라음극선관등은 라인 캐소오드로부터 방출된 열전자가 상기 가속전극에 의해 가속 및 제어되어 형광체층에 랜딩됨으로써 하나의 화상을 이루게 된다. 그런데, 상기와 같은 평면형 화상표시장치의 사속전극은 제 1 도에 나타내 보인 바와 같이 기판(2) 또는 배면전극과 평행한 평면형상으로 형성되어 있다. 이러한 평면형 화상표시장치(1)는 라인 캐소오드(4)로부터 방출된 열전자의 밀도가 라인캐소오드(4)를 따라 그 주위가 조밀하게 분포되고 상기 라인케소오드(4)로부터 멀어질수록 그 밀도가 낮아져 전화면상에서 균일한 휘도특성을 얻을 수가 없었다. 즉, 상기 가속전극(3)이 평면형으로 형성되게 되면, 상기 라인캐소오드(4) 외주면의 각 부위와 가속전극(3)과의 상대적 위치가 달라져 각 라인캐소오드(4) 사이와 라인캐소오드(4) 수직상부 또는 하부에서의 전자빔 가속정도가 달라지게 되고 나아가서는 전화면 상에서 균일한 휘도특성을 얻을 수 없어 화상의 얼룩이 발생되게 되는 문제점이 있었다. 특히 상기 평면형 가속전극(3)은 구조적 지지강도가 매우 약하여 외부로부터 충격이 가하여지게 되면 심하게 진동하게 되어 가속전극(3)으로서의 기능을 수행할 수 없는 문제점이 있었다.In general, a fluorescent display tube, a back glass, a back electrode, a line including a substrate in which wiring layers, conductive layers, and phosphor layers are sequentially stacked, and acceleration electrodes and line cathodes provided on the substrate to be spaced apart from each other by a predetermined distance. A flat color cathode ray tube having a cathode accelerating electrode and a front glass coated with a phosphor layer is used to form a single image by hot electrons emitted from the line cathode being accelerated and controlled by the accelerating electrode and landing on the phosphor layer. . By the way, as shown in FIG. 1, the four-time electrode of the planar image display apparatus is formed in the plane shape parallel to the board | substrate 2 or the back electrode. In such a planar image display apparatus 1, the density of hot electrons emitted from the line cathode 4 is densely distributed around the line cathode 4, and as the distance from the line cathode 4 increases. Was lowered to obtain a uniform luminance characteristic on the full screen. That is, when the acceleration electrode 3 is formed in a planar shape, the relative position of each portion of the outer circumferential surface of the line cathode 4 and the acceleration electrode 3 is changed, so that each line cathode 4 and the line cathode are different. (4) There was a problem that the degree of electron beam acceleration in the vertical upper portion or the lower portion was changed, and further, uniform luminance characteristics could not be obtained on the full screen, resulting in unevenness of the image. In particular, the planar acceleration electrode 3 has a weak structural support strength, so that when an impact is applied from the outside, the planar acceleration electrode 3 vibrates violently, and thus cannot function as the acceleration electrode 3.
본 발명은 상기 문제점을 해결하기 위하여 창출된 것으로서, 라인캐소오드로부터 방출된 열전자가 형광체층에 대해 균일한 밀도로 랜딩되게 함으로써 휘도특성을 향상시킬 수 있는 평면형 화상표시장치를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a flat image display device capable of improving luminance characteristics by allowing hot electrons emitted from a line cathode to be landed at a uniform density with respect to a phosphor layer. .
상기 목적을 달성하기 위하여 본 발명은 열전자를 방출하는 라인캐소오드와, 상기 라인캐소오드로부터 방출된 열전자를 가속하는 가속전극과, 상기 가속전극에 의해 가속된 열전자가 랜딩됨으로써 발광하는 형광체층을 구비하여 된 평면형 화상표시장치에 있어서, 상기 가속전극이 상기 각 라인캐소오드를 감싸는 각각의 곡면부를 구비하여서 된 것을 그 특징으로 한다.In order to achieve the above object, the present invention includes a line cathode for emitting hot electrons, an acceleration electrode for accelerating hot electrons emitted from the line cathode, and a phosphor layer emitting light by landing the hot electrons accelerated by the acceleration electrode. In the planar image display device, the acceleration electrode is provided with respective curved portions surrounding the respective line cathodes.
이하 첨부된 도면을 참조하여 본 발명에 따른 한 바람직한 실시예를 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.
제 2 도에는 본 발명에 따른 평면형 화상표시장치의 일예를 나타내 보였다.2 shows an example of a flat image display device according to the present invention.
이것은 배면전극(11)상에 상호 평행하게 설치된 라인캐소오드(12)와, 상기 라인캐소오드(12) 상부에 위치되는 평면형 가속전극(13)과 상기 가속전극(13)과, 대향되는 면에 형광체층이 형성된 애노우드전극(14)이 순차적으로 배열설치되어 된 것으로 상기 가속전극(13)은 제 2b 도에 나타내 보인 바와 같이 본 발명의 특징에 따라 상기 각각의 라인캐소오드(12)를 중심으로 소정의 곡률을 가지는 복수개의 곡면부(13a)를 가진다. 이때에 상기 곡면부(13a)는 상기 라인캐소오드(12)의 외주면을 반이상 감싸지 않도록 함이 바람직하며, 상기 곡면부(13a)의 곡률은 라인캐소오드(12) 외주면의 곡률과 대략 동일하게 함이 바람직하다.This is provided on the surface opposite to the line cathode 12 and the planar acceleration electrode 13 and the acceleration electrode 13 positioned above the line cathode 12, which are arranged in parallel with each other on the back electrode 11, respectively. An anode electrode 14 having a phosphor layer formed thereon is sequentially arranged, and the acceleration electrode 13 is centered on each of the line cathodes 12 according to the characteristics of the present invention as shown in FIG. Has a plurality of curved portions 13a having a predetermined curvature. At this time, it is preferable that the curved portion 13a does not surround the outer circumferential surface of the line cathode 12 more than half, and the curvature of the curved portion 13a is approximately equal to the curvature of the outer circumferential surface of the line cathode 12. It is preferable to.
이와 같이 구성된 평면형 화상표시장치의 작용을 설명하면 다음과 같다.The operation of the flat image display device configured as described above will be described below.
상기 평면형 화상표시장치(10)는 각 전극(11)(14)과 라인캐소오드(12)에 전원이 인가됨에 따라 상기 라인 캐소오드(12)로부터 방출된 열전자가 가속전극(13)에 의해 가속되어 애노우드전극(14)에 형성된 형광체층(14a)에 랜딩됨으로써 이 형광체층(14a)이 발광하여 하나의 화상을 이루게 되는데, 상기 가속전극(13)에는 상기 라인캐소오드(12)를 감싸는 대략 반원형의 곡면부(13a)가 마련되어 있으므로 전화면상에 균일한 발광휘도를 얻을 수 있다.In the planar image display apparatus 10, as the electric power is applied to each of the electrodes 11 and 14 and the line cathode 12, hot electrons emitted from the line cathode 12 are accelerated by the acceleration electrode 13. And landing on the phosphor layer 14a formed on the anode electrode 14, the phosphor layer 14a emits light to form a single image. The acceleration electrode 13 has a roughly enclosed line cathode 12. Since the semi-circular curved portion 13a is provided, uniform light emission luminance can be obtained on the full screen.
즉, 상기 라인캐소오드(12)로부터 방출된 열전자를 가속 및 제어하는 가속전극(13)은 상기 라인캐소오드(12)의 외주면과 대략 동일한 곡면을 가지는 곡면부(13a)가 마련되어 있으므로 상기 라인캐소오드(12) 외주면의 각 부위로부터 가속전극(13)까지의 가격이 일정하게 되고 나아가서는 상기 라인캐소오드(12)로부터 방출된 열전자를 형광체층(13a)에 대해 균일하게 가속시킬 수 있다. 따라서 상기 가속전극(13)에 의해 가속된 열전자는 형광체층(14a)을 균일한 발광휘도로 발광시킬 수 있게 된다.That is, the accelerating electrode 13 for accelerating and controlling the hot electrons emitted from the line cathode 12 is provided with a curved portion 13a having approximately the same curved surface as the outer circumferential surface of the line cathode 12. The price from each portion of the outer circumferential surface of the anode 12 to the acceleration electrode 13 becomes constant, and further, the hot electrons emitted from the line cathode 12 can be uniformly accelerated with respect to the phosphor layer 13a. Accordingly, the hot electrons accelerated by the accelerating electrode 13 may emit the phosphor layer 14a with uniform emission luminance.
이와 같이 본 발명 평면형 화상표시장치는 라인캐소오드로부터 방출된 열전자를 형광체층에 대해 균일하게 가속시킬 수 있으므로 화상표시장치의 전형광면에서 균일한 발광휘도를 얻을 수 있으며, 나아가서는 제품의 상품적 가치를 향상시킬 수 있는 이점이 있다.As described above, the flat-panel image display device of the present invention can uniformly accelerate the hot electrons emitted from the line cathode with respect to the phosphor layer, thereby obtaining a uniform luminance of light emitted from the entire fluorescent surface of the image display device. There is an advantage to improve.
Claims (2)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910009429A KR930009466B1 (en) | 1991-06-07 | 1991-06-07 | Plate type picture display apparatus |
| DE4203248A DE4203248A1 (en) | 1991-06-07 | 1992-02-05 | FLAT DISPLAY DEVICE |
| JP4035911A JPH04368760A (en) | 1991-06-07 | 1992-02-24 | Plane type image display unit with thermoelectron accelerating electrode |
| GB9213321A GB2257291B (en) | 1991-06-07 | 1992-06-23 | Cassette loading device for a cassette tape player and/or recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019910009429A KR930009466B1 (en) | 1991-06-07 | 1991-06-07 | Plate type picture display apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR930001282A KR930001282A (en) | 1993-01-16 |
| KR930009466B1 true KR930009466B1 (en) | 1993-10-04 |
Family
ID=19315529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019910009429A KR930009466B1 (en) | 1991-06-07 | 1991-06-07 | Plate type picture display apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH04368760A (en) |
| KR (1) | KR930009466B1 (en) |
| DE (1) | DE4203248A1 (en) |
| GB (1) | GB2257291B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4939372A (en) * | 1972-08-14 | 1974-04-12 | ||
| JP2572965B2 (en) * | 1986-04-23 | 1997-01-16 | 三菱電機株式会社 | Planar electron emission device |
| JPH0340345A (en) * | 1989-07-05 | 1991-02-21 | Nec Corp | Fluorescent display tube |
-
1991
- 1991-06-07 KR KR1019910009429A patent/KR930009466B1/en not_active IP Right Cessation
-
1992
- 1992-02-05 DE DE4203248A patent/DE4203248A1/en not_active Withdrawn
- 1992-02-24 JP JP4035911A patent/JPH04368760A/en active Pending
- 1992-06-23 GB GB9213321A patent/GB2257291B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB9213321D0 (en) | 1992-08-05 |
| JPH04368760A (en) | 1992-12-21 |
| DE4203248A1 (en) | 1992-12-10 |
| KR930001282A (en) | 1993-01-16 |
| GB2257291A (en) | 1993-01-06 |
| GB2257291B (en) | 1995-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6242865B1 (en) | Field emission display device with focusing electrodes at the anode and method for constructing same | |
| US5543691A (en) | Field emission display with focus grid and method of operating same | |
| US6635986B2 (en) | Flat CRT display | |
| JP2629521B2 (en) | Electron gun and cathode ray tube | |
| JPH0594787A (en) | Flat-type fluorescent display apparatus | |
| US4881005A (en) | Flat type display device | |
| KR930009466B1 (en) | Plate type picture display apparatus | |
| EP0336270A2 (en) | Display tube for light source | |
| JP2001084930A (en) | Fluorescent character display tube | |
| KR940009190B1 (en) | Flat image display device | |
| JPH0447889Y2 (en) | ||
| KR940006305B1 (en) | Fluorescent display tube | |
| KR940004295B1 (en) | Making method and device of display panel | |
| JPH0452928Y2 (en) | ||
| KR100224743B1 (en) | Field emission display device with an improved horisontal resistance layer | |
| JP2528456Y2 (en) | Fluorescent display | |
| KR100274457B1 (en) | Flat display device | |
| JPH0243088Y2 (en) | ||
| KR100291785B1 (en) | Vacuum Fluorescent Display | |
| JPH0139628B2 (en) | ||
| KR930006740Y1 (en) | Grid supportor for fluorescent display tube | |
| KR20050028515A (en) | Vacuum fluorescent display | |
| JPH07105879A (en) | Flat image display device | |
| JPS5932862B2 (en) | cathode ray device | |
| JPH0355749A (en) | Fluorescent display tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| G160 | Decision to publish patent application | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20100927 Year of fee payment: 18 |
|
| EXPY | Expiration of term |