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1. 发明专利

JP2011191387A Liquid crystal display device 审中-公开
标题翻译：液晶显示装置
公开(公告)号：JP2011191387A
公开(公告)日：2011-09-29
申请号：JP2010055802
申请日：2010-03-12
申请人： Hitachi Displays Ltd , Panasonic Liquid Crystal Display Co Ltd , パナソニック液晶ディスプレイ株式会社 , 株式会社日立ディスプレイズ
发明人： UEMURA NORIHIRO , SUGITA TATSUYA
IPC分类号： G02F1/13357 , F21S2/00 , F21Y101/02 , G02B5/02 , G02B5/04
摘要： PROBLEM TO BE SOLVED: To brighten display still more while suppressing increase in power consumption in a color liquid crystal display device having a backlight.
SOLUTION: The liquid crystal display device includes: a liquid crystal display panel having a plurality of pixels each of which includes a group of subpixels each having different visible wavelength region for transmission; and a backlight including a light guide plate disposed at the back surface side of the liquid crystal display panel and a prism sheet disposed between the liquid crystal display panel and the light guide plate. On an optical path of the light which proceeds towards the subpixel from the backlight, a complementary reflection filter is disposed. Through the complementary reflection filter, only the light in the visible wavelength region which the subpixel allows transmission is transmitted while the light in other visible wavelength regions is reflected. The prism sheet includes a light transmissive substrate 61 and a plurality of prisms 62 provided on the substrate. The prism 62 has generally the same inclination angle between a first inclined plane in contact with the surface contacting the substrate and a second inclined plane.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：在抑制具有背光的彩色液晶显示装置中的功率消耗增加的同时更亮化显示。解决方案：液晶显示装置包括：具有多个像素的液晶显示面板，每个像素包括一组子像素，每个子像素具有不同的可见波长区域用于透射; 以及配置在液晶显示面板的背面侧的导光板和配置在液晶显示面板与导光板之间的棱镜片的背光源。在从背光向子像素行进的光的光路上设置有互补反射滤光片。通过互补反射滤光器，仅反映子像素允许透射的可见光波长区域中的光，同时反射其他可见波长区域中的光。棱镜片包括透光基板61和设置在基板上的多个棱镜62。棱镜62在与接触基板的表面接触的第一倾斜平面和第二倾斜平面之间具有大致相同的倾斜角。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2011170257A Liquid crystal display device 有权
标题翻译：液晶显示装置
公开(公告)号：JP2011170257A
公开(公告)日：2011-09-01
申请号：JP2010036137
申请日：2010-02-22
申请人： Hitachi Displays Ltd , Panasonic Liquid Crystal Display Co Ltd , パナソニック液晶ディスプレイ株式会社 , 株式会社日立ディスプレイズ
发明人： SUGITA TATSUYA , UEMURA NORIHIRO
IPC分类号： G02F1/1335 , G02B5/18 , G02B5/30 , G02F1/13357
摘要： PROBLEM TO BE SOLVED: To improve efficiency of using light from a backlight in a color liquid crystal display device having the backlight.
SOLUTION: The liquid crystal display device has: a liquid crystal display panel in which a liquid crystal layer is interposed between a pair of substrates; and the backlight which is arranged on a back side of the liquid crystal display panel, wherein the backlight has a light transmission plate arranged on the back side of the liquid crystal display panel, and a light source arranged at the end part of the light transmission plate. A diffraction grating which diffracts and spectrally splits light outgoing from the light transmission plate, and a condensing member which condenses light of each wavelength spectrally split by the diffraction grating in a different position in the liquid crystal display panel for every wavelength region, are arranged between the liquid crystal layer and the light transmission plate. A principal cross section of the diffraction grating is formed in shape having a plurality of grooves which are inclined in a direction separating from the light source according as they go toward the end part of the liquid crystal display panel side from the end part of the light transmission plate side.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提高具有背光源的彩色液晶显示装置中使用来自背光的光的效率。解决方案：液晶显示装置具有液晶显示面板，液晶层插入在一对基板之间;液晶显示面板，以及布置在液晶显示面板的背面的背光源，其中背光源具有布置在液晶显示面板背面的透光板，以及布置在光传输端部的光源盘子。将从透光板射出的光进行衍射和光谱分裂的衍射光栅，以及将由衍射光栅分光的每个波长的光聚光在用于每个波长区域的液晶显示面板中的不同位置的聚光部件被布置在液晶层和透光板。衍射光栅的主要截面形成为具有多个凹槽的形状，所述多个凹槽沿着从光源分离的方向倾斜，因为它们从光的端部朝向液晶显示面板侧的端部传动板侧。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2011154078A Liquid crystal display device 审中-公开
标题翻译：液晶显示装置
公开(公告)号：JP2011154078A
公开(公告)日：2011-08-11
申请号：JP2010013972
申请日：2010-01-26
申请人： Hitachi Displays Ltd , Panasonic Liquid Crystal Display Co Ltd , パナソニック液晶ディスプレイ株式会社 , 株式会社日立ディスプレイズ
发明人： SUGITA TATSUYA , UEMURA NORIHIRO
IPC分类号： G02F1/13357 , F21S2/00 , F21Y101/02 , G02B3/00 , G02B3/06 , G02B5/04 , G02B5/08 , G02B5/18 , G02B5/20
摘要： PROBLEM TO BE SOLVED: To enhance the utilizing efficiency of light source light in a liquid crystal display device having a backlight unit.
SOLUTION: The liquid crystal display device includes a liquid crystal display panel and the backlight unit. The backlight unit has a plurality of light sources, a light guide plate 9 converting light emitted by the light sources into a planar beam and a diffraction grating 10 dividing light emitted by the light sources into red light 3r, green light 3g and blue light 3b. In the liquid crystal display device, the diffraction grating is disposed in a direction opposite to the liquid crystal display panel as viewed from the light guide plate via a low refractive index layer 11 having a refractive index lower than that of the light guide plate and is disposed so that the diffraction direction of negative first-order diffracted light of all the light beams of the red light, the green light and the blue light is inclined more at the light source side than the vertical direction of the diffraction grating when viewed at a principal sectional surface parallel to the propagation direction of light of a principal component having the highest intensity of the light among light beams made incident on the light guide plate from the light sources.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提高具有背光单元的液晶显示装置中的光源光的利用效率。解决方案：液晶显示装置包括液晶显示面板和背光单元。背光单元具有多个光源，将由光源发射的光转换成平面光束的导光板9和将由光源发射的光分成红光3r，绿光3g和蓝光3b的衍射光栅10 。在液晶显示装置中，衍射光栅通过折射率低于导光板的折射率低的低折射率层11，从导光板观察的方向配置在与液晶显示面板相反的方向上，并且是被配置为使得当在一观察时，红光，绿光和蓝光的所有光束的负一级衍射光的衍射方向比衍射光栅的垂直方向在光源侧倾斜得更多与从光源入射在导光板上的光束中具有最高强度的主要成分的光的传播方向平行的主剖面。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2011164472A Liquid crystal display device 审中-公开
标题翻译：液晶显示装置
公开(公告)号：JP2011164472A
公开(公告)日：2011-08-25
申请号：JP2010029044
申请日：2010-02-12
申请人： Hitachi Displays Ltd , Panasonic Liquid Crystal Display Co Ltd , パナソニック液晶ディスプレイ株式会社 , 株式会社日立ディスプレイズ
发明人： UEMURA NORIHIRO , SUGITA TATSUYA , ADACHI MASAYA
IPC分类号： G02F1/13357 , F21S2/00 , F21Y101/02 , G02B5/02 , G02B5/04 , G02B5/08 , G09F9/00
摘要： PROBLEM TO BE SOLVED: To enhance front brightness while suppressing the increase in power consumption of an edge light type backlight unit, in a liquid crystal display device including the backlight unit.
SOLUTION: The liquid crystal display device includes a liquid crystal display panel, a light guide plate disposed on the rear side of the liquid crystal display panel, a light source disposed at an end part of the light guide plate, and a prism sheet disposed between the liquid crystal display panel and the light guide plate. The prism sheet has a plurality of prisms and a base. With respect to each prism, surfaces other than a first surface facing the base comprise a first region having a reflecting layer and a second region not having a reflecting layer, and the first region is located nearer to a light source than the second region and is formed into a stepwise surface having surfaces approximately parallel with the first surface, and the second region serves as a surface which changes the traveling direction of light emitted from the light guide plate and made incident on the first surface, to a desired direction.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：在包括背光单元的液晶显示装置中，为了提高前方亮度同时抑制边缘光型背光单元的功耗的增加。解决方案：液晶显示装置包括液晶显示面板，设置在液晶显示面板后侧的导光板，设置在导光板端部的光源和棱镜片材设置在液晶显示面板和导光板之间。棱镜片具有多个棱镜和基底。对于每个棱镜，除了与基座相对的第一表面以外的表面包括具有反射层的第一区域和不具有反射层的第二区域，并且第一区域位于比第二区域更靠近光源的位置，并且是形成具有与第一表面大致平行的表面的阶梯面，第二区域用作使从导光板发射的光并且入射到第一表面上的光的行进方向改变到期望方向的表面。版权所有（C）2011，JPO＆INPIT

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