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71. 发明专利

JP2005091541A Video display device, rear projection screen used therefor, fresnel lens sheet and its manufacturing method 有权
标题翻译：视频显示设备，其后投影屏幕，FRESNEL镜片及其制造方法
公开(公告)号：JP2005091541A
公开(公告)日：2005-04-07
申请号：JP2003322430
申请日：2003-09-16
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIKAWA HIROKI , OISHI SATORU , HIRATA KOJI , IMAFUKU DAISUKE
IPC分类号： G02B3/08 , G03B21/10 , G03B21/62 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide technique which is suitable for shortening the depth of a video display device, without significantly impairing the image quality (brightness) of a display video on a screen. SOLUTION: A total reflection type prism part (10), emitting an incident light beam as an emitted light beam having a specified emitting angle by a total reflection phenomenon after a 1st refraction phenomenon, is provided in a range where the incident angle of a projected video projected from an optical component on the Fresnel lens sheet (6), constituting the rear projection screen, is at least ≥ about 40° on the video generating source side of the Fresnel lens sheet (6), and a refraction type prism part (11), emitting the incident light beam as the emitted light beam having a specified emitting angle by a 2nd refraction phenomenon, is provided in a range facing a part where the total reflection type prism part is not provided on the video observation side of the Fresnel lens sheet. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供适合于缩短视频显示设备的深度的技术，而不会显着损害屏幕上的显示视频的图像质量（亮度）。解决方案：在第一折射现象之后，通过全反射现象发射入射光束作为具有特定发射角的发射光束的全反射型棱镜部分（10）设置在入射角构成背投屏幕的菲涅耳透镜片（6）上的光学部件投影的投影视频在菲涅耳透镜片（6）的视频发生源侧至少≥40°，折射型棱镜部分（11）在与全反射型棱镜部分没有设置在视频观察侧的部分相对的范围内被提供，该入射光束作为具有指定的发射角的第二折射现象的发射光束发射。的菲涅尔透镜片。版权所有（C）2005，JPO＆NCIPI

72. 发明专利

JP2005043395A Projection type display device 有权
标题翻译：投影型显示设备
公开(公告)号：JP2005043395A
公开(公告)日：2005-02-17
申请号：JP2003199575
申请日：2003-07-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANITSU MASAHIKO , HIRATA KOJI
IPC分类号： G02B5/30 , G02F1/13 , G03B21/00 , H04N9/31
摘要： PROBLEM TO BE SOLVED: To provide a projection type display device in which good color balance and a high amount of luminous flux (high luminance) are simultaneously realized while maintaining color temperature high during white color reproducing, and also to provide a back surface projection type display device using the projection type display device.
SOLUTION: When red color display is to be conducted, a dichroic mirror is provided with characteristics wherein white color luminous flux is separated into red color luminous flux and green color/blue color luminous flux, and the green color luminous flux and the blue color luminous flux are transmitted to the red color luminous flux side to a certain extent so as to be mixed with the red color luminous flux. Moreover, a red color trimming filter is provided with a spectral transmissivity characteristics to cut green color luminous flux (including yellow color luminous flux) and to transmit an amount of blue color luminous flux.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种投影型显示装置，其中在白色再现期间保持色温高的同时实现良好的色彩平衡和大量的光通量（高亮度），并且还提供背面表面投影型显示装置。
解决方案：当要进行红色显示时，分色镜具有白色光通量分为红色光通量和绿色/蓝色光通量的特性，绿色光通量和将蓝色光通量一定程度地传输到红色光通量侧，以便与红色光通量混合。此外，红色修整滤光器具有切割绿色光通量（包括黄色光通量）的光谱透射特性并透射蓝色光通量。版权所有（C）2005，JPO＆NCIPI

73. 发明专利

JP2005037564A Projection display device and back projection display device using same 有权
标题翻译：投影显示装置和使用相同的投影显示装置
公开(公告)号：JP2005037564A
公开(公告)日：2005-02-10
申请号：JP2003198848
申请日：2003-07-18
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRATA KOJI , TANITSU MASAHIKO
IPC分类号： G02B27/18 , G02F1/133 , G03B21/00 , G03B21/10 , H04N5/66 , H04N5/74 , H04N9/31
CPC分类号： H04N9/3105
摘要： PROBLEM TO BE SOLVED: To achieve high image quality and high reliability in a projection video display device. SOLUTION: In the display device, color purity is improved by cutting a yellow component from red and green ones, and also the balance of light energy among three colors is made well by inserting a reflection type attenuating filter which reflects light in a green optical path. Furthermore, an optical phase difference compensating plate is provided in the green optical path so as to improve contrast performance, and simultaneously two optical parts to which ultraviolet reflection coating is applied are arranged in a blue optical path and an ultraviolet absorbing filter is provided on the incident side of a blue liquid crystal panel in order to realize the prolongation of the life of a video display element. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在投影视频显示装置中实现高图像质量和高可靠性。解决方案：在显示装置中，通过从红色和绿色切割黄色成分来提高色纯度，并且通过将反射型衰减滤光器插入到反射型衰减滤光片中，可以很好地得到三种颜色之间的光能平衡绿色光路。此外，在绿色光路中设置光学相位差补偿板，以提高对比度性能，并且同时将两个施加有紫外线反射涂层的光学部件布置在蓝色光路中，并且紫外线吸收滤光器设置在为了实现视频显示元件的寿命的延长，蓝色液晶面板的入射侧。版权所有（C）2005，JPO＆NCIPI

74. 发明专利

JP2004361717A Back mirror and back projection type video display device using the same 审中-公开
公开(公告)号：JP2004361717A
公开(公告)日：2004-12-24
申请号：JP2003160665
申请日：2003-06-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAKOO MEGUMI , NISHIMURA SADAYUKI , HIRATA KOJI , ADACHI HIROSHI
IPC分类号： G02B5/08 , G03B21/10 , G03B21/28 , H04N5/74
CPC分类号： G02B5/0808 , H04N9/3141
摘要： PROBLEM TO BE SOLVED: To obtain a back mirror yielding more excellent anti-corrosive performance than the conventional back mirror.
SOLUTION: The back mirror 30 equipped with a metal plated layer 2 and a topcoat layer 3 on the flat surface of base material 1 is constituted so that the side part of the bonded surface of the reflection film 2 with the base material 1 is perfectly covered with the topcoat layer 3 by removing the reflection film 2 on the side surface of the base material 1 after forming the reflection film 2 on the flat surface of the base material 1 by metal plating, or preventing the reflection film from being formed on the side surface of the base plate 1 from the beginning.
COPYRIGHT: (C)2005,JPO&NCIPI

75. 发明专利

JP2004271924A Rear projection screen and image display device using same 审中-公开
公开(公告)号：JP2004271924A
公开(公告)日：2004-09-30
申请号：JP2003062644
申请日：2003-03-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YOSHIKAWA HIROKI , OISHI SATORU , HIRATA KOJI , NAKAYAMA YOJI , IMAFUKU DAISUKE
IPC分类号： G03B21/10 , G03B21/62 , G03B21/625 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To provide a rear projection screen which reduces speckles by preventing resolution and contrast performance from decreasing and to provide an image display device using the same. SOLUTION: The rear projection screen is equipped with a 1st sheet and a 2nd sheet which are arranged in the travel direction of image light. The 1st sheet includes a Fresnel sheet (6) having a Fresnel lens formed on its projection surface and the 2nd sheet has a lenticular lens (8) which is concave to an image source side and a diffusion sheet (7) which is arranged on an image observation side and contains a particulate light diffusing material. In this constitution, the speckles are reducible even when an image modulating element such as a reflection or a transmission liquid crystal panel and a display element equipped with a plurality of fine mirrors is used for an image source instead of a projection cathode-ray tube. COPYRIGHT: (C)2004,JPO&NCIPI

76. 发明专利

JP2004151746A Projection type picture display device and screen used for the same 有权
公开(公告)号：JP2004151746A
公开(公告)日：2004-05-27
申请号：JP2004011311
申请日：2004-01-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRATA KOJI , INAOKA SHIGERU
IPC分类号： G03B21/00 , G03B21/62 , G03B21/625
摘要： PROBLEM TO BE SOLVED: To provide a projection type display device and a screen improved so that the lowering of contrast may be restrained and the deterioration of picture quality caused by moire may be reduced.
SOLUTION: The screen is constituted by providing an aperture part near the focus of a lenticular lens on the picture viewing side surface of a 1st component element, providing a light absorbing layer having finite width at the mutual boundary part of the aperture parts, and performing antireflection processing to the picture viewing side surface of a 2nd component element, and then coupling the 1st component element and the 2nd component element. Furthermore, the pitch of the aperture part is smaller than the pixel pitch of an enlarged picture on the screen of a picture display element, and the pitch of interference fringe caused by the interference of both of them is set nearly equal to or under the pixel pitch of the enlarged picture on the screen of the picture display element.
COPYRIGHT: (C)2004,JPO

77. 发明专利

JP2003262919A PROJECTION OPTICAL SYSTEM AND PROJECTION TYPE IMAGE DISPLAY DEVICE USING THE SAME 审中-公开
公开(公告)号：JP2003262919A
公开(公告)日：2003-09-19
申请号：JP2003008999
申请日：2003-01-17
申请人： HITACHI LTD
发明人： HIRATA KOJI , NAKAGAWA KAZUNARI , NAGIRI TOMOHARU , OGURA NAOYUKI , NAGAGAWA CHIHIRO
IPC分类号： G02B13/16 , G02B13/18 , G02B27/18 , G03B21/00
摘要： PROBLEM TO BE SOLVED: To improve focus performance and contrast performance by suppressing a decrease in the lightness of display video and to improve the quality of the display video. SOLUTION: For, for example, a concave lens element 6a of a projection lens 7a of a projection tube 1a for red, is provided with a light transmitting means which has relation TRS≤TRL/3, where TRS is the transmissivity of the wavelength of subpeak energy in a short-wavelength range to the wavelength of the peak energy of a spectrum distribution of red video light from the projection tube 1a and TRL is the light transmissivity of the wavelength of the subpeak energy in a long-wavelength range, and for example, a concave lens element 6b of a projection lens 7b of a projection tube 1b for green, is provide with a light transmitting means which has relation TGL≤TGS/2, where TGS is the light transmissivity of the wavelength of the subpeak energy in a short- wavelength range to the wavelength of the peak energy of green video light from the projection tube 1b and TGS is the light transmissivity of the wavelength of the subpeak energy in a short-wavelength range. COPYRIGHT: (C)2003,JPO

78. 发明专利

JP2003262851A LIQUID CRYSTAL DISPLAY DEVICE 审中-公开
公开(公告)号：JP2003262851A
公开(公告)日：2003-09-19
申请号：JP2003031835
申请日：2003-02-10
申请人： HITACHI LTD
发明人： OTSUKA YASUO , SHIRAISHI MIKIO , NUMATA TORU , HIRATA KOJI , OGURA NAOYUKI , INAOKA SHIGERU , NAKAGAWA KAZUNARI , MORI SHIGERU , TANITSU MASAHIKO
IPC分类号： G02F1/13 , G02F1/1333 , G02F1/1335 , G03B21/00 , G03B21/16
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display device attaining both improvement of luminance of a projected image and suppression of temperature rise of a liquid crystal display element and a polarizing element and being realized by compact and simple construction. SOLUTION: The liquid crystal display device is provided with the liquid crystal display element 2 for converting light from a light source into an optical signal expressing an image corresponding to a drive signal, a projecting optical system 1 for projecting the optical signal to a target to be projected, an exit side polarizing element 3b, a holding member 6 for fixing and holding respective elements together with the liquid crystal display element 2, a cooling medium 5 for cooling, an incident side polarizing element 3a and a first optical element 1a constituting the projecting optical system. The liquid crystal display element 2, the first optical element 1a and the holding member 6 constitute space between the liquid crystal display element 2 and the first optical element 1a. The space is filled with the cooling medium 5. COPYRIGHT: (C)2003,JPO

79. 发明专利

JP2003203969A METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE 审中-公开
公开(公告)号：JP2003203969A
公开(公告)日：2003-07-18
申请号：JP2002001899
申请日：2002-01-09
申请人： HITACHI LTD , HITACHI ULSI SYS CO LTD
发明人： OTA HIROSHI , HIRATA KOJI , KIKAWA TAKESHI
IPC分类号： H01L21/331 , H01L21/338 , H01L21/76 , H01L29/737 , H01L29/778 , H01L29/812
摘要： PROBLEM TO BE SOLVED: To solve the problem in the case of isolation of semiconductor elements, such as deterioration of characteristics due to deterioration in crystallinity, increase of leakage current due to contact of an active layer with electrode metal, and step cut of the electrode metal and wiring metal in a step difference part. SOLUTION: In a method for forming an active layer in an element part of a semiconductor wafer by using an ion implanting method or a diffusion method, or an element isolation method of a semiconductor element, by increasing electrical resistance of a part except an element part after the active layer is formed over the whole semiconductor wafer, this method for manufacturing a semiconductor device includes a process for forming the active layer on a semiconductor substrate, a process for forming a spacer layer for lift-off on an upper layer of the active layer, a process for anisotropically working the spacer layer, a process for working a semiconductor layer containing the active layer, by using the spacer layer or mask material for working the spacer layer as a mask, a process for directivity-depositing an insulating film on the spacer layer and on the entire surface of an exposed semiconductor layer, and a process for eliminating the spacer layer, by using an etching agent for etching and eliminating only the spacer layer. COPYRIGHT: (C)2003,JPO

80. 发明专利

JP2003177472A TRANSMISSION SCREEN 审中-公开
公开(公告)号：JP2003177472A
公开(公告)日：2003-06-27
申请号：JP2002299795
申请日：2002-10-15
申请人： HITACHI LTD
发明人： YOSHIDA TAKAHIKO , HIRATA KOJI , OSAWA ATSUO , WADA KIYOSHI , YOSHIKAWA HIROKI
IPC分类号： G03B21/00 , G03B21/10 , G03B21/14 , G03B21/62 , G03B21/625 , H04N5/74
摘要： PROBLEM TO BE SOLVED: To improve the contrast of an image in a back projection type image display device, and to shorten the depth of the device. SOLUTION: The particulates of a light diffusing material are not dispersed in the substrate of a lenticular lens sheet constituting a transmission screen 1. A liquid refrigerant is enclosed within the space of a coupler 9G between a projection type Braun tube 7G and a projection lens 8G. The inside of a casing 12 is colored black. The contrast ratio of the image is 70 or more when there is external light such as illumination light. When a screen size is 35 inches in a diagonal, a projection distance from the optical light-emitting plane of the projection lens 8G to the transmission screen 1 is about 560 mm, the diagonal size of the transmission screen 1 is about 890 mm, and a viewing angle is about 77 degrees. COPYRIGHT: (C)2003,JPO

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