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61. 发明专利

JPH07153386A CATHODE-RAY TUBE 失效
公开(公告)号：JPH07153386A
公开(公告)日：1995-06-16
申请号：JP30271893
申请日：1993-12-02
申请人： HITACHI LTD
发明人： OBARA KATSUMI , KAWAMURA HIROMITSU , MIYAZAKI MASAHIRO , KAWAMURA TAKAO
IPC分类号： G02B5/02 , G02B5/00 , H01J29/28 , H01J29/32 , H01J29/88 , H01J29/89 , H01J31/20 , G02B1/11
摘要： PURPOSE:To form a reflection-proofing film on an inner surface of a panel part without giving bad effects on quality of light absorbing matrix or a phosphor layer, and facilitate regeneration of a panel by forming an ultra-fine particle layer of hydrophilic silicon oxide on the inner surface of the panel part. CONSTITUTION:Alcohol to which ultra-fine particles of silicon oxide is added is applied on an inner surface of a panel part 1 of a cathode-ray tube, it is dried to form an ultra-fine particle layer 41 of hydrophilic silicon oxide, and light absorbing matrix 42, a phosphor layer 43, and a metal back 44 are formed on the layer 41 to form a screen 4. Because the layer 41 is a smooth hydrophilic layer, the matrix 42, the layer 43, etc., can be formed uniformly, so a reflection- proofing film can be formed without giving bad effects on quality of the light absorbing matrix or phosphor layer. Since the ultra-fine particle layer 41 is hydrophilic, this can be eliminated easily and securely, thereby panel regeneration work is facilitated.

62. 发明专利

JPH06325702A DISPLAY DEVICE 失效
公开(公告)号：JPH06325702A
公开(公告)日：1994-11-25
申请号：JP11305493
申请日：1993-05-14
申请人： HITACHI LTD
发明人： KAWAMURA HIROMITSU , OBARA KATSUMI , MIYAZAKI MASAHIRO , KAWAMURA TAKAO , ENDO KIJU
IPC分类号： G02B1/10 , G02B1/111 , G02B1/16 , G09F9/00 , H01J9/20 , H01J29/88 , H01J29/89 , H04N5/64 , H04N5/72
摘要： PURPOSE:To obtain a display device having a screen substrate structure which suppresses a reduction of the resolution and the contrast following the prevention of reflection, and also has a charge preventive function. CONSTITUTION:A charge preventive membrane and a reflection preventive membrane which consist of the first layer 11 composed by fixing the ultrafine particles making at least one sort of SnO2, Sb2O3, and In2O3 as the component, with an SiO2 binder produced by the resolution of an ethyl silicate; and the second layer 12 composed by fixing the ultrafine particles making at least one sort of SiO2 and MgF2 as the component, with an SiO2 binder produced by the resolution of an ethyl silicate; are formed. As a result, a low reflection property by both theories of a reflectance reduction by the light interferences of the layers, and a reflectance reduction of the refraction factor continuous variation by the surface form effect of the ultrafine particles; and a charge preventive property by the first layer; can be obtained.

63. 发明专利

JPH06251729A DISPLAY DEVICE 失效
公开(公告)号：JPH06251729A
公开(公告)日：1994-09-09
申请号：JP3551393
申请日：1993-02-24
申请人： HITACHI LTD
发明人： KAWAMURA HIROMITSU , OBARA KATSUMI , MIYAZAKI MASAHIRO , KAWAMURA TAKAO , ENDO KIJU
IPC分类号： G02B1/11 , G02B1/111 , G02B1/16 , G02B1/18 , H01J29/88 , H01J29/89 , H04N5/66 , G02B1/10
摘要： PURPOSE:To provide a display device having a reflection preventive film, for which adhesion-proof and removal effect for dirt and the like are improved. CONSTITUTION:An SiO2 layer of very small particles 11, coated with a binder 12, is formed on the surface of a substrate 10 forming the screen of a display device, and a cover coat layer 14 consisting of resin and the like, is formed on the upper layer of the very fine particle layer. The gaps among SiO2 very small particles are filled thereby, and adhesion of dirt or a fingerprint is restricted. Even when dirt or a fingerprint is adhered, it can be easily removed, while the strength of a reflection preventive layer is improved.

64. 发明专利

JPH06223733A CATHODE STRUCTURE OF CATHODE-RAY TUBE 失效
公开(公告)号：JPH06223733A
公开(公告)日：1994-08-12
申请号：JP884593
申请日：1993-01-22
申请人： HITACHI LTD
发明人： KOMIYA HISAFUMI , KOIZUMI YUKIO , KAWAMURA HIROMITSU
IPC分类号： H01J29/04 , H01J29/48
摘要： PURPOSE:To suppress the generation of crack to a glass at the insulating substarte side, at the connection between a metal holding tube and the insulating substarte, by forming the thickness of the part where the metal holding tube circumscribes the insulating substarte thnner relatively compared with the other parts. CONSTITUTION:The size of a cathode holding tube 10 to be the outermost part of a cathode body structure is 3.8mm at the inner diameter, 3.9 mm at the minimum outer diameter, and 4.2mm at the maximum outer diameter. This cathode holding tube 10, a support 9, and heater holding pins 11 are adhered and fixed with an insulating substarte 8 made of a crystallized glass by a baking process. Since the thickness of the wall surface of the cathode holding tube 10 at the part connected to the insulating substrate 8 in this baking work is thin having only 0.05mm, and deformed in the same manner according to the variation of the glass at the insulating substarte side following the temperature variation, the generation of crack to the glass at the insulating substarte side at the connection of both members can be suppressed.

65. 发明专利

JPH0696700A DISPLAY DEVICE AND MANUFACTURE OF ANTIREFLECTION FILM THEREFOR 失效
公开(公告)号：JPH0696700A
公开(公告)日：1994-04-08
申请号：JP24217492
申请日：1992-09-10
申请人： HITACHI LTD
发明人： KAWAMURA HIROMITSU , OBARA KATSUMI , MIYAZAKI MASAHIRO , KAWAMURA TAKAO , ENDO KIJU
IPC分类号： H01J9/20 , H01J29/88 , H01J29/89
摘要： PURPOSE:To lessen the adhesion of a stain and a fingerprint, and enable a deposited stain and fingerprint, if any, to be easily removed by forming continuous surface via the adhesion of SiO2 ultrafine particles due to the deformation thereof at equivalent space between the particles as a constituent of the surface of an antireflection film. CONSTITUTION:SiO2 ultrafine particles 10 are fixed to the outer surface of a panel 1 with a SiO2 binder. Then, the surface of the fixed particles 10 is rubbed several times with a felt cloth impregnated with water. The particles 10 are thereby caused to begin a plastic flow, and the adhesion 12 of adjacent particles 10 in an array direction is generated, thereby forming continuous surface in the array direction of the particles 10. Consequently, a gap between the particles 10 is filled to prevent an ingress of dirt 13 including a fingerprint. Also, the application of rubbing treatment weakens the adhesion of dirt, including a fingerprint, and adhering dirt, if any, can be completely removed, using a commercially available spectacles cleaning cloth.

66. 发明专利

JPH05320387A METHOD FOR FORMING ULTRA-FINE PARTICLE FILM, TRANSPARENT PLATE AND IMAGE-DISPLAYING PLATE 失效
公开(公告)号：JPH05320387A
公开(公告)日：1993-12-03
申请号：JP12450292
申请日：1992-05-18
申请人： HITACHI LTD
发明人： ENDO KIJU , ONO MASAHIKO , MIYAZAKI MASAHIRO , KAWAMURA HIROMITSU , OBARA KATSUMI , YAMADA TOSHIHIRO , KAWABATA TOSHIAKI , KAWAMURA TAKAO
IPC分类号： B05D1/18 , B05D5/06 , B32B5/30 , C03C17/25 , C03C17/34 , C08J7/04 , G02B1/10 , G02B1/111 , G02B1/16 , H01J9/20 , H01J9/22 , H01J29/88 , H01J29/89 , H04N5/72
摘要： PURPOSE:To relate to the ultra-fine particle film effective for preventing static electrification and for preventing the reflection of visible light, especially to form the ultra-fine particle film capable of being applied to large areas at low costs and form the image-displaying plate such as a cathode-ray tube subjected to the application of the ultra-fine particle film by a simple method. CONSTITUTION:The method for forming the ultra-fine particle film comprises attaching a coating solution tank 22 to the surface of a cathode-ray tube 21, filling the tank with a coating solution 23 containing SnO2 ultra-fine particles used for preventing static electrification, covering the surface of the cathode-ray tube 21 with the coating solution, exposing the covered surface at a prescribed rate to form a conductive film, and subsequently performing the same operation using a coating solution containing ultra-fine particles used for preventing the reflection of visible light to form a visible light reflection-preventing film thereon.

67. 发明专利

JPH05288903A 失效
公开(公告)号：JPH05288903A
公开(公告)日：1993-11-05
申请号：JP8857992
申请日：1992-04-09
申请人： HITACHI LTD
发明人： ONO MASAHIKO , ENDO KIJU , KAWAMURA HIROMITSU , OBARA KATSUMI
IPC分类号： G02B1/11 , B25J9/00 , B82Y20/00 , G02B1/111 , G02B1/16 , G02B1/10
摘要： PURPOSE:To obtain an electrification and reflection preventive film which is low in cost and applicable to a large area by setting the film thickness of a binder for bringing superfine particles and a base board into tight adhesion to less than a half as large as a particle size. CONSTITUTION:The supersonic particles are arrayed orderly on the base board to high density and the film thickness of the binder for bringing the superfine particles and base board into tight adhesion is set to less than a half as large as the particle size. This superfine particle film is formed on the base board surface by putting coating liquid 13 obtained by mixing superfine particles having a reflection preventing function and superfine particles having an electrification preventing function together in a bathtub 12 and ascending or descending the base board surface at prescribed speed. In such a case, the coating solution 13 as the mixture of the superfine particles is introduced to a space formed between the coating bathtub 12 and the surface of a cathode-ray tube. After the coating solution 13 filled up in a solution tank 16 is pressurized to cover the cathode-ray tube 11, an overflow valve 15 and a valve 17 for solution supply are closed and a valve 14 for pressure control and a leakage valve 18 are opened to return the coating solution 13 to the solution tank 16. Thus, uniform and continuous ruggedness is formed of the superfine particles on the surface of the cathode-ray tube.

68. 发明专利

JPH04144043A CATHODE RAY TUBE 失效
公开(公告)号：JPH04144043A
公开(公告)日：1992-05-18
申请号：JP26621690
申请日：1990-10-05
申请人： HITACHI LTD
发明人： OBARA KATSUMI , KAWAMURA HIROMITSU , KAWAMURA TAKAO
IPC分类号： H01J29/88 , H01J29/89
摘要： PURPOSE:To obtain an antireflection coating having sufficient strength without an interference color or interference nonuniformity by composing the antireflection coating on a panel surface with a first layer showing the variation of a refractive index with particles having the main component of SiO2, and a second layer having the main component of SiO2. CONSTITUTION:An antireflection coating 3 provided on the outer surface of a panel 2 is composed of a first layer 4 having the main component of SiO2, and a second layer 5 having SiO2 fine irregularities. The panel surface is polished and cleaned, then the layer 4 is formed by a spin application method, the layer 5 is applied on the layer 4 by a spray application method, and finally the coating 3 is formed by baking.

69. 发明专利

JPH0352645B2 失效
公开(公告)号：JPH0352645B2
公开(公告)日：1991-08-12
申请号：JP11530185
申请日：1985-05-30
申请人： HITACHI LTD
发明人： KUMASAKA TAKAYUKI , FUJIWARA HIDEO , OOTOMO MOICHI , YAMASHITA TAKEO , KUDO SANEHIRO , KAWAMURA HIROMITSU
IPC分类号： C03C3/072 , C03C3/00 , C03C8/10 , C03C29/00 , G11B5/10 , G11B5/127 , G11B5/147 , G11B5/187 , G11B5/23

70. 发明专利

JPH03150501A ANTIREFLECTION FILM AND PRODUCTION THEREOF AND IMAGE DISPLAY SURFACE PLATE 失效
公开(公告)号：JPH03150501A
公开(公告)日：1991-06-26
申请号：JP28892189
申请日：1989-11-08
申请人： HITACHI LTD
发明人： OKADA RYOJI , ENDO KIJU , KAWAMURA TAKAO , KAWAMURA HIROMITSU , MISUMI AKIRA
IPC分类号： G02B1/11 , B82Y20/00 , B82Y40/00 , C03C17/30 , G02B1/111 , G02B1/16 , H01J5/08 , H01J9/20 , H01J29/88
摘要： PURPOSE:To form the antireflection film having a large area at a low cost by etching a binder to pack the spacings between the superfine particles of a superfine particle film to form micro-rugged surfaces and specifying the exposing area of the superfine particle group. CONSTITUTION:A soln. prepd. by dispersing the superfine the superfine particles 1 (SiO2, etc., having an antireflection function) into an alcohol soln. dissolved with Si(OR)4 (R is an alkyl group) is applied on a substrate 3 and is then heated to decompose the Si(OR)4. The SiO2 of the decomposed matter intrudes into the spacings between the superfine particles 1 and the spacings between the superfine particles 1 and the substrate 3 and plays the role of an adhesive agent 2. The layer rich with the decomposed matter SiO2 on the film surface is then etched to form the microgrooves between the superfine particles 1 and to form the micro-ruggedness over the entire surface of the film, by which the antireflection film 5 is formed. The exposing area of the superfine particles is specified to >=70% of the outside surface area of the superfine particle films at this time. The antireflection function is surely obtd. at a low cost in this way even if this film is applied to a large area.

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