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1. 发明专利

JPH10121049A COMPOSITION FOR LIQUID CRYSTAL ALIGNMENT LAYER 失效
公开(公告)号：JPH10121049A
公开(公告)日：1998-05-12
申请号：JP27360396
申请日：1996-10-16
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： YOKOKURA HISAO , NAKADA TADAO , FUNAHATA KAZUYUKI , KONDO KATSUMI
IPC分类号： G02F1/1337 , C09K19/56
摘要： PROBLEM TO BE SOLVED: To obtain a composition for a liquid crystal alignment layer which scarcely causes unevenness of residual image and unevenness of luminance by using a polymer comprising a cyclohexyldiamine having a specified group as a side chain a tetracarboxylic acid. SOLUTION: A cyclohexyldiamine having at least one 8-20C alkyl has a structure represented by the formula (wherein X is -NH2 ; Y is -O-, -CH2 O-, -CO2 -or -OCO-; and R is an 8-20C alkyl). R is desirably an 8-20C linear or branched alkyl, a cycloalkyl or a cycloalkylalkyl. The tetracarboxylic acid used is exemplified by pyromellitic dianhydride or methylpyromellitic dianhydride. The reaction of the cyclohexyldiamine with the tetracarboxylic acid is performed in an inert solvent, which is desirably one that can dissolve the formed polymer (e.g. N-methyl-2-pyrrolidone).

2. 发明专利

JPH09160046A COMPOSITION FOR LIQUID CRYSTAL ALIGNMENT LAYER 失效
公开(公告)号：JPH09160046A
公开(公告)日：1997-06-20
申请号：JP31888595
申请日：1995-12-07
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： YOKOKURA HISAO , NAKADA TADAO , FUNAHATA KAZUYUKI , ARAYA SUKEKAZU , KONDO KATSUMI
IPC分类号： G02F1/1337 , C08G69/26 , C08G73/10
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of an afterimage unevenness and brightness unevenness while enlarging the pretilt angle of a liquid crystal cell by using a polymer of a specified diamine compd. and tetracarboxylic acid and its deriv. as an org. oriented film. SOLUTION: This composition contains the polymer of an ortho type diamine consisting of a binding group hardly containing a polar group between an aromatic ring and the aromatic ring, the tetracarboxylic acid and its deriv. The ortho type diamine is an aromatic diamine containing a linear binding group preferably. Then the org. oriented film is obtained by dehydrocyclization after applying each precursor, for example poly (amic acid) and poly (amic acid)- imide, etc., on the substrate. In the liquid crystal alignment layer using such a composition, high pretilt angle, charging residual DC and discharge time, the frequency dependence of threshold voltage and the characteristic of voltage retention are improved compatibly. In this way, a liquid crystal display device especially low in generation of the brightness unevenness and the afterimage unevenness of a picture residual and high in display quality is obtained.

3. 发明专利

JP2004004750A METHOD FOR MANUFACTURING TRANSFER FILM AND DIFFUSION REFLECTION PLATE 审中-公开
公开(公告)号：JP2004004750A
公开(公告)日：2004-01-08
申请号：JP2003108913
申请日：2003-04-14
申请人： HITACHI CHEMICAL CO LTD
发明人： TAKANE NOBUAKI , TSURUOKA YASUO , YOSHIDA TAKESHI , FUNAHATA KAZUYUKI
IPC分类号： G02B5/02 , B32B7/06 , G02B5/08 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To provide a transfer film used for the manufacture of a diffusion reflection plate for reflection type LCD having good reflection characteristics. SOLUTION: Sand-blasted polyethylene terephthalate is used for a base film 4, and a thin film layer 2 is formed on the film by applying thin film layer forming solution and drying the solution, then, the layer 2 is coated with a polyethylene film as a cover film 5, thus, the transfer film is obtained. A substrate with a glass substrate, the thin film layer and a polyethylene terephthalate film (PET film) laminated is obtained by laminating so that the thin film layer comes into contact with the glass substrate while peeling off from the cover film of the transfer film. When the PET film is peeled off the substrate after the irradiation with light for making the thin film layer react by an exposure machine, the sand-blasted unevenness is transferred on the thin film layer, and the unevenness of good light diffusibility is obtained. COPYRIGHT: (C)2004,JPO

4. 发明专利

JP2000047199A TRANSFER FILM AND MANUFACTURE OF DIFFUSE REFLECTOR PLATE 失效
公开(公告)号：JP2000047199A
公开(公告)日：2000-02-18
申请号：JP21693998
申请日：1998-07-31
申请人： HITACHI CHEMICAL CO LTD
发明人： TAKANE NOBUAKI , TSURUOKA YASUO , YOSHIDA TAKESHI , FUNAHATA KAZUYUKI
IPC分类号： G02F1/1333 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To provide a transfer film used for manufacturing a diffuse reflector plate for a reflective LCD or the like having fine reflective characteristics. SOLUTION: Sandblasted polyethylene terephthalate is used as a base film 4 which is coated with a solution for forming a thin film layer, dried to form a thin film layer 2 and covered by a polyethylene film as a cover film 5 to obtain a transfer film. By stripping off the cover film of the transfer film, lamination is carried out so as to bring the thin film layer into contact with a glass substrate and a substrate laminated with a glass substrate, the thin film layer and polyethylene terephthalate film (PET film) is obtained. After irradiating with a ray with which the thin film layer reacts thereon by an exposing device and stripping off PET film from the substrate, projecting and recessing parts due to sandblast processing are transferred on the thin film layer. The projecting and recessing shape shows fine light diffusing properties.

5. 发明专利

JP2004045580A Reflective liquid crystal display device 有权
公开(公告)号：JP2004045580A
公开(公告)日：2004-02-12
申请号：JP2002200727
申请日：2002-07-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUNAHATA KAZUYUKI , ABE MAKOTO , KOMURA SHINICHI
IPC分类号： G02F1/1335
摘要： PROBLEM TO BE SOLVED: To provide a low-cost reflective liquid crystal display (LCD) device which can display a bright image with high contrast in any kinds of illumination surroundings. SOLUTION: The low-cost reflective LCD device can display a bright image with high contrast in any kinds of illumination surroundings by arranging diffuse reflection elements satisfying a condition of arrangement that projecting and recessing diffuse reflection elements consisting of two curved surface reflection parts with nearly equal continuously varying inclined angles are arranged in closest packing and at random on a specified region (1), unit projecting and recessing diffuse reflection elements formed by combining at least two or more of the diffuse reflection elements are arranged in closest packing and at random on a specified region (2) and unit projecting and recessing diffuse reflection elements formed by combining at least two or more diffuse reflection elements consisting of curved surface reflection parts with a continuously varying inclined angle are arranged in closest packing and at random on a specified region (3) under a reflection film in a reflective color LCD device with a built-in reflection plate. COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2002277894A TAPE CARRIER PACKAGE FOR LIQUID CRYSTAL DRIVER AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME 审中-公开
公开(公告)号：JP2002277894A
公开(公告)日：2002-09-25
申请号：JP2002005457
申请日：2002-01-15
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , TAKEDA NOBUHIRO , NAGAE KEIJI , MORITA YUZO
IPC分类号： G02B5/20 , G02F1/13357 , G02F1/1345 , G09F9/00 , G09F9/35 , H01L21/60
摘要： PROBLEM TO BE SOLVED: To provide a TCP for a LCD driver which is improved in reliability by preventing the lead disconnection by the level difference in the thickness of base film. SOLUTION: This TCP for the LCD driver is a three-layered structure, i.e., a structure consisting of a base tape 1/adhesive 12/copper foil patterns 3, 4, 5, 6 and 7. A polyimide-base film of 75 μm thickness is used for the base tape 1 and an epoxy adhesive for the adhesive 12. Copper foils of 35 μm thickness are used as the wiring materials 3, 4, 5, 6 and 7, an epoxy-base resin as an end-sealing material 14, an epoxy-base solder resist as a solder resist 10 and solder plating as the plating of the outer leads 3, 4, 5, 6 and 7. The use of the two-layered structure which does not use the adhesive, i.e., the tape of the structure consisting of the base tape 1 the copper foil patterns 3, 4, 5, 6 and 7 can be used as well.

7. 发明专利

JP2000321568A REFLECTION LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000321568A
公开(公告)日：2000-11-24
申请号：JP13537899
申请日：1999-05-17
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , KOMURA SHINICHI , YONETANI SHIN , ABE MAKOTO
IPC分类号： G09F9/30 , G02B5/02 , G02B5/08 , G02F1/13 , G02F1/1333 , G02F1/1335
摘要： PROBLEM TO BE SOLVED: To obtain a low-cost reflection liquid crystal display device in which a bright image can be obtained in any viewing direction. SOLUTION: The reflection color liquid crystal display device has an inner reflection plate and has a pattern satisfying the following conditions disposed under a reflection film. The conditions are that the pattern is (1) a string-like pattern having projections and recesses with smooth curved lines in the cross section, (2) a string-like pattern having projections and recesses continuously or alternately arranged, (3) a pattern with projections and recesses having almost the same total length in the component of any direction, or (4) a pattern having symmetric distribution of inclination angles in the cross section of the projections and recesses. Thus, incident light in all directions can be condensed to the direction of an observer, and the obtained reflection type liquid crystal display device is bright.

8. 发明专利

JPH11133407A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH11133407A
公开(公告)日：1999-05-21
申请号：JP30158897
申请日：1997-11-04
申请人： HITACHI LTD
发明人： KOMURA SHINICHI , FUNAHATA KAZUYUKI , ITO OSAMU , KUWABARA KAZUHIRO , KONDO KATSUMI , HIYAMA IKUO
IPC分类号： G02F1/1335
摘要： PROBLEM TO BE SOLVED: To provide an STN liquid crystal display device of a wide visual angle. SOLUTION: This liquid crystal display device has a liquid crystal cell having a pair of substrates and a liquid crystal layer held by a pair of these substrates and a pair of polarizing plates holding this liquid crystal cell and executes dark display in a state that the liquid crystal molecules of the liquid crystal layer are held aligned approximately parallel with the substrates. The respective polarizing plates of a pair of the polarizing plates 21, 22 have polarizing layers 41, 42 and a pair of protective layers holding these polarizing layers. The refractive index nx in the direction parallel with the absorption axis of the polarizing layers within the plane of these protective layers 43 to 46, the refractive index ny in the direction orthogonal with this refractive index nx and the refractive index nz in the thickness direction are determined so as to satisfy nx≠ny=nz.

9. 发明专利

JPH1114978A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH1114978A
公开(公告)日：1999-01-22
申请号：JP17146897
申请日：1997-06-27
申请人： HITACHI LTD
发明人： UCHIUMI YUUKA , FUNAHATA KAZUYUKI , KONDO KATSUMI , ARAYA SUKEKAZU , OTA MASUYUKI
IPC分类号： G02B6/00 , G02B5/20 , G02F1/1335 , G02F1/13357 , G02F1/1343 , G02F1/136 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To reduce the uneveness of color tone and brightness and to improve color balance by providing each liquid crystal layer between linear electrodes with a thickness regulated to make wavelengths indicating the peak transmission rates of a color filter and the liquid crystal layer nearly coincident with each other. SOLUTION: Each liquid crystal layer 50 between a plurality of linear electrodes 40 has a thickness regulated such that a wavelength indicating the peak transmission rate of a color filter 24 formed between the linear electrodes 40 is coincident with a wavelength indicating the peak transmission rate of the liquid crystal layer 50. For example, the color filter 24 is formed to have a level difference, that is, in order to have a peak transmission rate in a wavelength where the thickness of the liquid crystal layer 50 takes an optimal value for each pixel, i.e., the polarized light transmission rate of each color becomes high, a blue pixel color filter 24B is formed thicker than a green pixel color filter 24G, and a red pixel color filter 24R is thinner than the green pixel color filter 24G. Thus, in the blue pixel, the thickness 60B of the liquid crystal layer is thinner than the thickness 60G of the liquid crystal layer of the green pixel, and the thickness 60R of the liquid layer of the red pixel is thicker than the thickness 60G of the liquid crystal layer of the green pixel.

10. 发明专利

JPH09311331A COLOR LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH09311331A
公开(公告)日：1997-12-02
申请号：JP28490796
申请日：1996-10-28
申请人： HITACHI LTD
发明人： FUNAHATA KAZUYUKI , NAGAE KEIJI , KOSAKA MASAHIRO
IPC分类号： G02F1/1335 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To obtain a color liquid crystal display device in which the range of displayed colors is wide and which is of bright by specifying the product between the anisotropy of the refractive index of liquid crystal and the thickness of a liquid crystal layer as a liquid crystal element and using the optimum combination of a color filter, a polarizing plate, a back light and the liquid crystal element. SOLUTION: This device is constituted of a liquid crystal element 3 which is provided with a color filter 1 and a polarizing plate 2 and which is to become an optical shutter and a back light 4. Then, a liquid crystal element in which the product >=.d between the difference between the refractive index of the long axial direction and the refractive index of the short axial direction of a liquid crystal molecular, that is, the anisotropy >=n of the refractive index of liquid crystal and the thickness (d) of the liquid crystal layer is 0.45-0.70 is used. Moreover, a color filter in which stimulating purities are thought important or a color filter in which stimulating purities and brightnesses are balanced is used as the color filter 1 and plural number of three wavelength type lights are used as light sources of the back light 4. Moreover, it is desirable for the color filter 3 that peak values of transmissivities in the wavelength area of 450-650nm of respective color elements of green, blue and red are large in the order of green, blue and red.

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