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1. 发明专利

JPH1020270A LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JPH1020270A
公开(公告)日：1998-01-23
申请号：JP17941296
申请日：1996-07-09
申请人： HITACHI LTD , NITTO DENKO CORP
发明人： HIYAMA IKUO , FUNAHATA KAZUYUKI , KONDO KATSUMI , NAGAE KEIJI , TOJO YASUHISA
IPC分类号： G02F1/13 , G02B27/28 , G02F1/1335 , G02F1/13357 , G09F9/00 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To realize thinned large-screen display where a joint is made inconspicuous and a high-definition picture by composing displayed pictures of plural liquid crystal display element so that space is not left on a screen and marking the joint of the displayed pictures on the screen inconspicuous by a matrix-state light shielding layer. SOLUTION: Light 80 made incident on a light incident surface of a collimating means 10 is totally reflected on a boundary surface between a high refractive index part and a low refractive index part, becomes a pseudo point light source on a light outgoing surface having high refractive index, and is turned into parallel beams 81 by a microlrns, so that the parallel beams 81 are efficiently obtained. Then, the picture displayed on the display screen of the liquid crystal display element 40 is formed to be an unmagnified state at a specified position on the element 40 in the normal direction of the element 40 by an image-formation means 30 but it is actually formed to be still the unmagnified state in an oblique direction by an optical path changing means 50. Thus, the pictures from the elements 40 are joined with not space in between and formed on the screen 70. Since the space between the display elements 40 is hidden by the effect of a black matrix 71 arranged on the screen 70, the picture without space is obtained.

2. 发明专利

JP2000147499A REFLECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE 失效
公开(公告)号：JP2000147499A
公开(公告)日：2000-05-26
申请号：JP31757098
申请日：1998-11-09
申请人： HITACHI LTD , NITTO DENKO CORP
发明人： KOMURA SHINICHI , FUNAHATA KAZUYUKI , YANO SHUJI , UMEMOTO SEIJI , HIYAMA IKUO
IPC分类号： G02F1/1335 , G02F1/13357 , G02F1/1343
摘要： PROBLEM TO BE SOLVED: To attain an image display with high contrast by arranging a film whose refractive index is nearly equal to that of the member for the surface of a reflection type liquid crystal panel which is adhered with adhesive agent whose refractive index is nearly equal to the member for the surface of the reflection type liquid crystal panel on the surface of the reflection type liquid crystal panel, installing a light reflecting means on the film and reflecting illuminating light toward the reflection type liquid crystal panel. SOLUTION: A phase plate 70, a light diffusion layer 80, a polarization plate 90, an adhesive layer 12 and a light guide film 11 are successively provided on the surface of the upper transparent substrate 22. Plural prism parts 11a for reflecting the illuminating light to the rear side of the light guide film 11 are installed on the surface of the light guide film 11. By changing the shape of a groove in accordance with a distance from an illumination lamp 13, the uniform illumination is accomplished by the prism part 11a. The light guide film 11 is adhered to the polarization plate 90 with the adhesive layer 12 whose refractive index is nearly equal to those of the conductive film 11 and the polarization plate 90, then, multiple reflection is not caused, then, the image display with high contrast can be attained.

3. 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

4. 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.

5. 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.

6. 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.

7. 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.

8. 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).

9. 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.

10. 发明专利

JPH095755A COLOR LIQUID CRYSTAL DISPLAY ELEMENT 失效
公开(公告)号：JPH095755A
公开(公告)日：1997-01-10
申请号：JP14708495
申请日：1995-06-14
申请人： HITACHI LTD
发明人： TAKEDA NOBUHIRO , FUNAHATA KAZUYUKI
IPC分类号： G02B5/00 , G02F1/133 , G02F1/1335 , G02F1/1339
摘要： PURPOSE: To increase contrast and to enhance the uniformity within the plane of display by widening the intersected point parts of a points. CONSTITUTION: The intersected points of the grid-like black matrix of a supertwisted nematic type color liquid crystal display element formed by holding liquid crystals with electrode substrates arranged with color filters on one thereof are widened to a circular or elliptic shape and the spacers 2 are arranged at these intersected points. For example, the black matrix 1 of the display element of a display scale 640(X3)×480 pixels is arranged to a grid form at a width of 30μm and pitch of 100μm in a longitudinal direction and at a width of 30μm and a pitch of 300μm in a transverse direction. The intersected points are widened to the circular shape and the spacers 2 are arranged in these parts by screen printing, etc. As a result, the light leakage by the spacers 2 and the adhesives 3 for fixing these spacers and the light leakage by the disturbance in the orientation of the liquid crystals which occurs around these parts are lessened.

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