Glass for use in monochromatic colored light emitting cathode ray tubes
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C03C-003/04
C03C-003/30
C03C-003/10
C04B-035/68
출원번호
US-0272038
(1981-06-09)
우선권정보
JP-0079916 (1980-06-12)
발명자
/ 주소
Daiku Nobutaka (Otsu JPX)
출원인 / 주소
Nippon Electric Glass Company, Limited (Otsu JPX 03)
인용정보
피인용 횟수 :
25인용 특허 :
3
초록▼
In a plurality of monochromatic colored light emitted cathode ray tubes arranged in a surface to form a huge screen for displaying a colored picture, glass for use in light-source cathode ray tubes for emitting the red or the blue light has the optical characteristics that it can well pass the light
In a plurality of monochromatic colored light emitted cathode ray tubes arranged in a surface to form a huge screen for displaying a colored picture, glass for use in light-source cathode ray tubes for emitting the red or the blue light has the optical characteristics that it can well pass the light in the wavelength range of the remaining blue and yellow portions of the spectrum to thereby improve contrast of the monochromatic colored red or green light source cathode ray tube. The glass essentially consists, by weight, of 50-75% SiO2, O-5% Al2O3, 0-4% CaO, 0-2% MgO, 0-12% SrO, 0-16% BaO, 0-3% PbO, 0-3% ZnO, 0-3% ZrO2, the sum of SrO+BaO+PbO+ZnO+ZrO2being 1.5-25%, 0-4% Li2O, 3-15% Na2O, 1-10% K2O, the sum of Li2O+Na2O+K2O being 5-24%, 0-2% TiO2, 0.1-3% CeO2, 1-10% Nd2O3, 0.5-5% Pr2O3, and 0.1-4% Fe2O3. According to the glass, the red light emitting cathode ray tube and the green light emitting cathode ray tube are produced only by a simple kind of glass without sacrificing contrast characteristic of the light-source cathode ray tubes emitting red light and green light, respectively. Thus, the red light emitting and the green light emitting cathode ray tubes using the glass are used together with the blue light emitting cathode ray tube to form a huge screen with a reduced cost and without pollution.
대표청구항▼
Glass for use in a light-source cathode ray tube monochromatically emitting red or green light having the composition essentially consisting, in weight %, of 50-75% SiO2, 0-5% Al2O3, 0-4% CaO, 0-2% MgO, 0-12% SrO, 0-16% BaO, 0-3% PbO, 0-3% ZnO, 0-3% ZrO2, the sum of SrO+BaO+PbO+ZnO+ZrO2 being 1.5-25
Glass for use in a light-source cathode ray tube monochromatically emitting red or green light having the composition essentially consisting, in weight %, of 50-75% SiO2, 0-5% Al2O3, 0-4% CaO, 0-2% MgO, 0-12% SrO, 0-16% BaO, 0-3% PbO, 0-3% ZnO, 0-3% ZrO2, the sum of SrO+BaO+PbO+ZnO+ZrO2 being 1.5-25%, 0-4% Li2O, 3-15% Na2O, 1-10% K2O, the sum of Li2O+Na2O+K2O being 5-24%, 0-2% TiO2, 0.1-3% CeO2, 1-10% Nd2O3, 0.5-5% Pr2O3 and 0.1-4% Fe2O3.
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이 특허에 인용된 특허 (3)
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Kijima Takashi,JPX ; Kudo Toru,JPX ; Ito Mizuki,JPX ; Kamei Fumio,JPX ; Kondo Akira,JPX, Glass having low solar radiation and ultraviolet ray transmittance.
Speit Burkhard (Mainz-Mombach DEX) Mennemann Karl (Taunusstein DEX) Gliemeroth Georg (Mainz-Finthen DEX), High absorbance Pb-containing glass for cathode ray tube picture screen.
Donofrio Robert L. ; van der Voort Andre A.,NLX, Monochrome CRT having curved display window with reduced transmission and projection color TV incorporating same.
Crane Richard H. ; De Angelis Laura O. ; Haynes William L. ; Stewart Ronald L., Ultraviolet absorbing and yellow light filtering glasses for lamp envelopes.
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