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1. 发明专利

JP2003155481A PHOSPHOR AND IMAGE DISPLAY DEVICE USING THE SAME 审中-公开
公开(公告)号：JP2003155481A
公开(公告)日：2003-05-30
申请号：JP2001354822
申请日：2001-11-20
申请人： HITACHI LTD , HITACHI DEVICE ENG , KASEI OPTONIX
发明人： IMAMURA SHIN , SHIIKI MASATOSHI , KOMATSU MASAAKI , MATSUKIYO HIDEJI , KOSEKI NOBUHIRO , HASE TAKASHI , YAMADA TSUTOMU
IPC分类号： C09K11/08 , C09K11/59 , C09K11/63 , C09K11/77 , C09K11/79 , C09K11/80 , C09K11/86 , H01J11/12 , H01J11/22 , H01J11/24 , H01J11/26 , H01J11/34 , H01J11/42 , H01J29/18 , H01J29/20 , H01J31/10 , H01J31/12 , H01J11/02
摘要： PROBLEM TO BE SOLVED: To obtain a phosphor exhibiting high brilliance, hardly suffering from luminance degradation characteristics and suitable for high-image quality display, and to provide an image display device of high image quality. SOLUTION: A ratio of SiO2 contained in the matrix of a conventional Tb- activated Y2 SiO5 phosphor is caused to be in excess of the stoichiometric ratio by employing a green color-emitting phosphor represented by the general formula: (Y1-y-z My Gdz )1-x Tbx }2 (Si1-b Geb O2 )1+a O3 (wherein 0

2. 发明专利

JPH06322364A FLUORESCENCER AND CATHODE RAY TUBE USING THE SAME 失效
公开(公告)号：JPH06322364A
公开(公告)日：1994-11-22
申请号：JP11273893
申请日：1993-05-14
申请人： HITACHI LTD , KASEI OPTONIX
发明人： TOYAMA HISASHI , KANEHISA OSAMU , MATSUKIYO HIDEJI , SHIIKI MASATOSHI , KASHIWAKURA YASUHIDE , UEHARA YASUHIKO , MORITA YASUKAZU , KOSEKI NOBUHIRO
IPC分类号： C09K11/08 , C09K11/56 , H01J29/20
摘要： PURPOSE:To obtain a cathode ray tube using a blue light-emitting fluorescencer capable of improving the luminous color tone and electric current coefficient. CONSTITUTION:A silver-activated cubic zinc sulfide fluorescencer is mixed with a silver-activated hexagonal zinc sulfide fluorescencer at a suitable ratio. The resultant fluorescencer is then used to prepare a cathode ray tube. Both color tone and electric current efficiency of the cathode ray tube can be improved by providing the cathode ray tube with the blue fluorescencer capable of emitting deep blue light as a fluorescent film. The obtained cathode ray tube can be used to realize an improvement in the range in which the color tone is reproduced and the resolution of a color TV image receptor.

3. 发明专利

JPH02289679A FLUORESCENT SUBSTANCE AND CATHODE RAY TUBE USING THE SAME 失效
公开(公告)号：JPH02289679A
公开(公告)日：1990-11-29
申请号：JP31067689
申请日：1989-12-01
申请人： HITACHI LTD , KASEI OPTONIX
发明人： YAMADA TAKAMICHI , SUZUKI TERUKI , YAMAMOTO AKIRA , MATSUKIYO HIDEJI , MORITA YASUKAZU , UEHARA YASUHIKO , KOSEKI NOBUHIRO , YAMADA TSUTOMU , OMATOI SUSUMU , FUJINO SHIGEO , HASE TAKASHI
IPC分类号： C09K11/80 , C09K11/78 , C09K11/79 , H01J29/20
摘要： PURPOSE:To obtain a fluorescent substance, emitting green light with a color tone within a specific range, reducing deterioration in brightness in irradiation with high-density electron rays and capable of providing a cathode ray tube with performance of a large screen, high preciseness and brightness by adding ytterbium, etc., to a site for holding terbium in a specific proportion. CONSTITUTION:The objective fluorescent substance, emitting green light obtained by adding (B) at least one of the group consisting of ytterbium, thulium, samarium and europium in an amount of 1 to 2X10 ppm (mol fraction) to a site for holding terbium in (A) an oxide fluorescent substance [e.g. a fluorescent substance, activated with terbium and expressed by the formula (Y1-xTbx)3(Al1-zGaz)5O12 (x and z are 1X10

4. 发明专利

JP2001319591A CATHODE-RAY TUBE 失效
公开(公告)号：JP2001319591A
公开(公告)日：2001-11-16
申请号：JP2000139474
申请日：2000-05-12
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： WATANABE HISAMITSU , KOSEKI NOBUHIRO , HAYAKAWA EMIKO
IPC分类号： H01J29/28 , H01J29/32 , H01J31/10
摘要： PROBLEM TO BE SOLVED: To provide a cathode-ray tube without deterioration of brightness in which a negative charge generated on a surface in a portion of a panel is expired without being accumulated, a coloring of a glass is prevented through controlling of a transfer of an alkaline ion in a panel glass. SOLUTION: On an inner surface of a panel portion 52, is formed a transparent conductive membrane 1. The membrane is equipped with a phosphor layer 56a and a metal back layer 56b connected to an anode terminal 55 through an internal conductive membrane 4. The metal back layer 56b is conducted with the transparent conducting membrane 1.

5. 发明专利

JPH10302681A PROJECTION TYPE CATHODE-RAY TUBE 失效
公开(公告)号：JPH10302681A
公开(公告)日：1998-11-13
申请号：JP10750297
申请日：1997-04-24
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： NAKAYAMA TSUNEKICHI , KOSEKI NOBUHIRO , HAYAKAWA EMIKO , SAKAKIBARA KOJI , WATANABE HISAMITSU
IPC分类号： H01J29/18 , H01J29/28 , H01J31/10
摘要： PROBLEM TO BE SOLVED: To provide a cathode-ray tube wherein brightness of a display image is sharply increased, by a method wherein a phosphor screen composed of a monochromatic phosphor screen and a reflection film is formed on an inner surface of a face plate and great part of an electron beam having passed through the monochromatic phosphor screen is reflected by the reflection film and re-projected to the monochromatic phosphor screen. SOLUTION: This cathode-ray tube 9 comprises a phosphor screen 4 formed on an inner surface of a face plate 1F of a panel part 1, an electron gun 7 housed in a neck part 2 and emitting an electron beam 8, and a deflection yoke 6 mounted on an outer circumference of a funnel part 3. In this event, the phosphor screen 4 forms a double-layer structure of a monochromatic phosphor screen film 4C consisting of one among green color, blue color, and red color, and a reflection film 4R provided between the monochromatic phosphor screen film 4C and the inner surface of the face plate 1F, containing metallic fine particles whose mean diameter falls within a range from 0.1 to 1.0 μm, and having a high reflection characteristic relative to the projected electron beam 8.

6. 发明专利

JPH09204879A CATHODE-RAY TUBE 失效
公开(公告)号：JPH09204879A
公开(公告)日：1997-08-05
申请号：JP1093696
申请日：1996-01-25
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： KOSEKI NOBUHIRO , SHIGA TOSHIO , SAWAMOTO KAZUO , NAKAYAMA TSUNEKICHI
IPC分类号： H01J29/28
摘要： PROBLEM TO BE SOLVED: To reduce the manufacturing costs for cathode-ray tube and accomplish effective use of materials by lessening the remaining of washing residue in/at a bulb when bulb is re-used on the way of manufacturing a cathode-ray tube. SOLUTION: A cathode-ray tube has a bulb 1 consisting of a panel part 2 to whose front inner surface a phosphor film 5 is attached, a neck part 4 accommodating an electron gun 8, and a funnel 3 coupling the panel 2 with the neck 4, wherein a metal back consisting of an aluminum vaporized film 6 is applied to the inner surfaces of the panel 2 and funnel 3, and a graphite film 10 to generate electroconductive connection between the electron gun 8 and an anode terminal 7 is formed on the inner surfaces of the funnel 3 and neck 4. When the aluminum film 6 and graphite film 10 are to be formed on the inner surface of the bulb 1, first the aluminum film 6 is formed and thereover the graphite film 10 is formed.

7. 发明专利

JPH0436382A FLUORPHOR AND CATHODE-RAY TUBE USING IT 失效
公开(公告)号：JPH0436382A
公开(公告)日：1992-02-06
申请号：JP14140390
申请日：1990-06-01
申请人： HITACHI LTD , KASEI OPTONIX
发明人： YAMAMOTO AKIRA , SUZUKI TERUKI , YAMADA TAKAMICHI , MATSUKIYO HIDEJI , MORITA YASUKAZU , UEHARA YASUHIKO , KOSEKI NOBUHIRO , YAMADA TSUTOMU , OMATOI SUSUMU , FUJINO SHIGEO , HASE TAKASHI
IPC分类号： C09K11/78 , C09K11/79 , C09K11/80 , H01J29/20
摘要： PURPOSE:To obtain a green emitting fluorphor lessened in the drop of luminance upon irradiation with high-density electron beams, decreased in the satd. luminance and high in the luminescent efficiency by selecting a Tb-activated oxide fluophor contg. a specified additive element and emitting a light of specified color tone. CONSTITUTION:An oxide fluophor prepd. by adding at least one additive element selected from Yb, Tm, Sm and Eu to a Tb-activated fluophor of the formula (Y1-xTbx)3 (Al1-zGaz)5O12(1X10 ppm (mol fraction) based on the sites to be occupied by Tb and emitting a light of which color tone is in the range of 0.325

8. 发明专利

JP2003132816A CATHODE-RAY TUBE 审中-公开
公开(公告)号：JP2003132816A
公开(公告)日：2003-05-09
申请号：JP2001330297
申请日：2001-10-29
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： MATSUKIYO HIDEJI , WATANABE HISAMITSU , NISHIKAWA MASAKI , KOSEKI NOBUHIRO , SAKAKIBARA KOJI
IPC分类号： H01J29/18 , C09K11/77 , H01J29/20 , H01J29/28 , H01J29/88 , H01J31/00 , H01J31/10
摘要： PROBLEM TO BE SOLVED: To provide a method for suppressing panel glass coloring which is caused by electron beam irradiation. SOLUTION: A cathode-ray tube PRT is provided with a panel glass PNL whose electron beam irradiation side has a transparent thin layer TF made from oxides of elements which is reduced easily by the electron beam irradiation.

9. 发明专利

JPH04161483A LUMINOUS COMPOSITION AND FLUORESCENT FACE FOR CATHODE RAY TUBE 失效
公开(公告)号：JPH04161483A
公开(公告)日：1992-06-04
申请号：JP28585490
申请日：1990-10-25
申请人： KASEI OPTONIX , HITACHI LTD
发明人： UEHARA YASUHIKO , MORITA YASUKAZU , KOSEKI NOBUHIRO , YAMAMOTO AKIRA , MATSUKIYO HIDEJI , TONO HIDEO , YAMADA TSUTOMU , FUJINO SHIGEO
IPC分类号： C09K11/08 , C09K11/59 , C09K11/79 , C09K11/80 , C09K11/84 , C09K11/86 , H01J29/20
摘要： PURPOSE:To obtain a luminous composition having excellent color tone and capable of controlling also afterglow property by blending a rare earth fluorescent substance obtained by attaching a green pigment to the surface of a specific rare earth fluorescent substance containing Tb as an activating agent with a zinc silicate fluorescent substance containing Mn as an activating agent. CONSTITUTION:The objective composition obtained by blending (A) a rare earth fluorescent substance obtained by attaching a green pigment, preferably consisting of a TiO2-ZnO-CoO-NiO based oxide, to (B) the surface of one or more kinds of rare earth fluorescent substance selected from yttrium aluminate fluorescent substance, yttrium silicate fluorescent substance, lanthanum oxyhalide fluorescent substance, indium borate fluorescent substance, yttrium oxysulfide fluorescent substance and gadolinium oxysulfide fluorescent substance each containing Tb as an activating agent with (C) a zinc silicate fluorescent substance containing Mn as an activating agent.

10. 发明专利

JPH09199061A CATHODE-RAY TUBE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09199061A
公开(公告)日：1997-07-31
申请号：JP335596
申请日：1996-01-11
申请人： HITACHI LTD , HITACHI DEVICE ENG
发明人： HAYAKAWA EMIKO , SHIGA TOSHIO , KOSEKI NOBUHIRO , NAKAYAMA TSUNEKICHI
IPC分类号： H01J9/20 , H01J29/88
摘要： PROBLEM TO BE SOLVED: To provide a cathode-ray tube in which incomplete cleaning failure of a bulb 1 is lessened to an extreme, of which manufacturing cost is lowered, and for which materials are used effectively. SOLUTION: In a color cathode-ray tube which has a bulb 1 consisting of a panel part 2 coated with a phosphor film 6 in the inner face by deposition, a neck part 4 housing an electron gun 9, and a funnel part 3 to join the panel part 2 and the neck part 4, in which a metallized screen 7 is formed in the inner face of the panel part 2 and the inner face of the funnel part 3, and in which a graphite film to electrically connect the electron gun 9 and an anode terminal 8 is formed between the inner face of the funnel part 3 and the inner face of the neck part 4; of the graphite film, a part formed at least in the peripheral part of the anode terminal 8 in the inner face of the funnel part 3 is a first graphite film 11 containing a slight amount, that is not more than 3wt.%, of an adhesive component consisting of silicic acid as a main component and the remaining part except the first graphite film 11 is formed by a second graphite film 12 containing 8-15wt.% of an adhesive component consisting of silicic acid as a main component.

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