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    • 1. 发明专利
    • Light mixing unit, planar light source device and liquid crystal display device
    • 光混合单元,平面光源装置和液晶显示装置
    • JP2012238462A
    • 2012-12-06
    • JP2011106315
    • 2011-05-11
    • Mitsubishi Electric Corp三菱電機株式会社
    • NISHITANI RENANAKANO NAMIKAGAWA SHUICHIKUWATA MUNEHARUKOJIMA KUNIKO
    • F21S2/00F21Y101/02G02F1/13357
    • PROBLEM TO BE SOLVED: To obtain a light mixing unit in which luminance unevenness and color unevenness are suppressed with a compact structure using a plurality of light sources with different characteristics.SOLUTION: The light mixing unit includes a light source 6, a light source 10, and a light intensity distribution shaping member 110. The light source 6 emits a light beam 600. The light source 10 emits a light beam 1000 having an angle intensity distribution wider than the light beam 600. The light intensity distribution shaping member 110 changes the angle intensity distribution of the light beam 600 in the angle intensity distribution shaping region and makes the light beam 600 and the light beam 1000 enter from a light incident surface and mix them to emit as linear light 809. The light beam 600 enters inclined to a reference plane of the light intensity distribution shaping member 110 and propagates while reflecting in the angle intensity distribution shaping region, and the light beam 1000 enters nearly perpendicularly to the reference plane of the light intensity distribution shaping member 110.
    • 解决的问题:为了获得使用具有不同特性的多个光源的紧凑结构来抑制亮度不均匀性和颜色不均匀性的光混合单元。 光混合单元包括光源6,光源10和光强度分布整形构件110.光源6发射光束600.光源10发射具有 角度强度分布宽于光束600.光强度分布整形部件110改变角度强度分布整形区域中的光束600的角度强度分布,并使光束600和光束1000从光入射 表面并将其混合以作为线性光809发射。光束600倾斜于光强度分布整形构件110的参考平面并在角度强度分布成形区域中反射的同时传播,并且光束1000几乎垂直于 光强度分布整形构件110的参考平面。(C)2013,JPO和INPIT
    • 2. 发明专利
    • Backlight device and liquid crystal display device
    • 背光装置和液晶显示装置
    • JP2011258458A
    • 2011-12-22
    • JP2010133105
    • 2010-06-10
    • Mitsubishi Electric Corp三菱電機株式会社
    • KAGAWA SHUICHINISHITANI RENANIIKURA EIJI
    • F21S2/00F21Y101/02G02F1/13357
    • PROBLEM TO BE SOLVED: To solve the following problems: it is difficult to restrain in-plane luminance unevenness caused by a luminance distribution of a light source in the vicinity of an incident end of the light source when the laser light source used as a point light source is adopted to a sidelight-type backlight; and there are possibilities of luminance distribution unevenness and reduction of a contrast since light is dispersed due to scratches of a light guide plate and the dispersed light turns to backlight.SOLUTION: A first backlight unit 2, a second backlight unit 6, and a third backlight unit prepared by a liquid crystal display device 100 respectively have light sources 20a, 20b, 60a, 60b, 70a, and 70b, and the light guide plates 21a, 21b, 61a, 61b, 71a, and 71b, and emit illumination light 33a, 33b, 63a, 63b, 73a, and 73b to a liquid crystal element 1 by a fine optical element. Emitted light 72a, 72b of the light sources 70a, 70b can reduce the luminance distribution unevenness caused by scratches of the light guide plates 71a, 71b since they include green light.
    • 要解决的问题:为了解决以下问题:当使用激光源时,难以抑制由光源的入射端附近的光源的亮度分布引起的面内亮度不均匀性 作为点光源被用于侧光式背光源; 并且由于光被导光板的划痕而分散,并且分散的光转向背光,因此存在亮度分布不均匀和对比度降低的可能性。 解决方案:由液晶显示装置100制备的第一背光单元2,第二背光单元6和第三背光单元分别具有光源20a,20b,60a,60b,70a和70b,并且光 引导板21a,21b,61a,61b,71a和71b,并通过精细的光学元件将照明光33a,33b,63a,63b,73a和73b发射到液晶元件1。 光源70a,70b的发光72a,72b可以减少因导光板71a,71b的擦伤引起的亮度分布不均匀,因为它们包括绿光。 版权所有(C)2012,JPO&INPIT
    • 3. 发明专利
    • Surface light source device
    • 表面光源设备
    • JP2013030493A
    • 2013-02-07
    • JP2012243532
    • 2012-11-05
    • Mitsubishi Electric Corp三菱電機株式会社
    • NISHITANI RENASASAGAWA TOMOHIRONIIKURA EIJIKOJIMA KUNIKOSOMEYA JUNSUGIURA HIROAKITSUTSUMI KAZUHIKONAGASE AKIHIRO
    • F21S2/00
    • G02F1/133615G02B6/002G02B6/003G02B6/0036G02B6/0061G02B6/0068G02B6/0076G02F2001/133614G02F2001/133624
    • PROBLEM TO BE SOLVED: To enable a surface light source device to display image with an expanded color reproduction range, while suppressing deterioration of light utilization efficiency.SOLUTION: The surface light source device 303 includes a first light source 6 which emits first light of a point-like spatial luminance distribution, a second light source 10 which emits second light having a divergence angle larger than that of the first light, a pillar-like light guide element 5 which makes the first light enter from a first light incident face provided at the end part and changes the point-like spatial luminance distribution into a linear spatial luminance distribution, and emits from a first light-emitting face provided in the side face, and makes the second light from a side face different from the first light-emitting face and emits from the first light-emitting face, and a plate-shape light guide plate 811 which makes enter the first light 61 and the second light 62 which have become the linear spatial luminance distribution from a second light incident face 811a provided in the side face and changes the first light and the second light having become the linear spatial luminance distribution into planar light, and emits from a second light-emitting face. In the light guide element 5, the first light-emitting face is arranged opposed to the second light incident face 811a.
    • 要解决的问题:为了使表面光源装置能够在抑制光利用效率的劣化的同时显示具有扩大的色彩再现范围的图像。 解决方案:表面光源装置303包括发射点状空间亮度分布的第一光的第一光源6,发射具有大于第一光的发散角的第二光的第二光源10 ,使第一光从设置在端部的第一光入射面入射的柱状导光元件5,将点状空间亮度分布变更为线状空间亮度分布,从第一发光 并且使来自与第一发光面不同的侧面的第二光从第一发光面发射,并且进入第一光61的板状导光板811 和从设置在侧面的第二光入射面811a变为线性空间亮度分布的第二光62,并且改变已经成为线的第一光和第二光 空间亮度分布成平面光,并从第二发光面发射。 在导光元件5中,第一发光面与第二光入射面811a相对配置。 版权所有(C)2013,JPO&INPIT
    • 4. 发明专利
    • Backlight device and liquid crystal display
    • 背光装置和液晶显示器
    • JP2011238484A
    • 2011-11-24
    • JP2010109345
    • 2010-05-11
    • Mitsubishi Electric Corp三菱電機株式会社
    • KAGAWA SHUICHINISHITANI RENANIIKURA EIJI
    • F21S2/00F21Y101/02G02F1/13357
    • PROBLEM TO BE SOLVED: To restrain in-plane luminance unevenness caused by luminance distribution of a light source in the vicinity of an incident end of the light source when a laser light source as a point light source is adopted as a sidelight type backlight.SOLUTION: A first backlight unit 2 of a liquid crystal display 100 is formed by laminating two sets of plane light sources 200a, 200b including light sources 20a, 20b having red, green, and blue laser light sources, and light guide plates 21a, 21b having light-transmitting sections for generating linear laser light sources from the spot-like laser light sources 20a, 20b and fine optical elements 25a, 25b for irradiating linear laser light as illumination light to a back surface of the liquid crystal display element 1 in a normal-line direction of a display surface of a liquid crystal display element 1, and illumination light having uniform in-plane luminance distribution can be generated by overlapping light emitted from these plane light sources. A liquid crystal display for providing a compact image with high quality can be attained in this simple structure.
    • 解决的问题:为了抑制作为点光源的激光光源时的光源的入射端附近的光源的亮度分布引起的面内亮度不均匀性, 背光源。 解决方案:液晶显示器100的第一背光单元2通过层叠包括具有红色,绿色和蓝色激光光源的光源20a,20b的两组平面光源200a,200b和导光板 21a,21b具有用于从点状激光光源20a,20b产生线性激光光源的光透射部分和用于将线性激光作为照明光照射到液晶显示元件的背面的微细光学元件25a,25b 可以通过重叠从这些平面光源发出的光来产生具有均匀的面内亮度分布的照明光。 在这种简单的结构中可以获得用于提供高质量的紧凑图像的液晶显示器。 版权所有(C)2012,JPO&INPIT
    • 5. 发明专利
    • Backlight device and liquid crystal display device
    • 背光装置和液晶显示装置
    • JP2011228078A
    • 2011-11-10
    • JP2010095863
    • 2010-04-19
    • Mitsubishi Electric Corp三菱電機株式会社
    • KAGAWA SHUICHINISHITANI RENANIIKURA EIJI
    • F21S2/00F21Y101/02G02F1/13357
    • PROBLEM TO BE SOLVED: To solve a problem that it is difficult to suppress unevenness of in-plane luminance caused by luminance distribution of a light source in the vicinity of an incident end of the light source in case a laser light source that is a point light source is adopted as a backlight of a side light type.SOLUTION: A first backlight unit 2 provided in a liquid crystal display device 100 comprises two sets of plane light sources 200a, 200b, laminated in a normal line direction of a display surface of a liquid crystal display element 1, containing laser light sources 20a, 20b and light guide plates 21a, 21b having an optical propagation part for generating linear laser light sources from the point laser sources 20a, 20b, and fine optical elements 25a, 25b which radiate the linear laser lights to a rear face of the liquid crystal display element 1 as illuminating light. The lights radiated from these plane light sources overlap themselves to generate illuminating light of a uniform in-plane luminance distribution. In this simple construction, a small-sized liquid crystal display device giving a high definition image can be realized.
    • 解决的问题为了解决在光源的入射端附近难以抑制由光源的亮度分布引起的面内亮度的不均匀性的问题,在激光光源 作为侧光型的背光,采用点光源。 解决方案:设置在液晶显示装置100中的第一背光单元2包括层叠在液晶显示元件1的显示面的法线方向上的两组平面光源200a,200b,其包含激光 源20a,20b和导光板21a,21b,具有用于从点激光源20a,20b以及用于将线性激光照射到所述点激光源20a,20b的后方的光学传播部分 液晶显示元件1作为照明光。 从这些平面光源辐射的光重叠,产生均匀的面内亮度分布的照明光。 在这种简单的结构中,可以实现提供高清晰度图像的小尺寸液晶显示装置。 版权所有(C)2012,JPO&INPIT
    • 6. 发明专利
    • Hintergrundbeleuchtung und Flüssigkristallanzeigevorrichtung
    • DE112012002308T5
    • 2014-02-27
    • DE112012002308
    • 2012-03-14
    • MITSUBISHI ELECTRIC CORP
    • NAKANO NAMIKUWATA MUNEHARUNISHITANI RENAKOJIMA KUNIKO
    • G02F1/13357F21V5/00F21V5/02
    • Es ist eine Aufgabe, eine Hintergrundbeleuchtung zu erhalten, in der eine Verringerung der Helligkeit bei einem Randabschnitt verknüpft mit der Änderung einer Betrachtungsdistanz reduziert wird. Die Hintergrundbeleuchtung umfasst ein optisches Bauteil (107) zum Transformieren von Strahlen, die von Lichtquellen (117A und 117B) projiziert worden sind, in Strahlen mit einer Schmalwinkel-Lichtverteilung, in der Wellenstrahlen mit einer Intensität von nicht weniger als einem vorbestimmten Wert innerhalb eines vorbestimmten Winkelbereichs örtlich festgelegt sind, der in der Normalrichtung einer Anzeigeoberfläche (106b) eines Flüssigkristallanzeige-Panels (106) zentriert ist, und zum Projizieren der transformierten Strahlen in die Richtung des Flüssigkristallanzeige-Panels (106); und ein Lichtverteilungs-Steuerbauteil (83) zum Empfangen der Strahlen, die von dem optischen Bauteil (107) projiziert werden, und die die Schmalwinkel-Lichtverteilung haben, und zum Projizieren der empfangenen Strahlen in die Richtung des Flüssigkristallanzeige-Panels (106), wobei eine Vielzahl von Konkavelementen (109) bereitgestellt ist bei dem Lichtverteilungs-Steuerbauteil (83) zum Transformieren eines Strahls, aus der Reihe der Strahlen mit der Schmalwinkel-Lichtverteilung, der in einen Randabschnitt des Flüssigkristallanzeige-Panels (106) eintritt, so dass die Schmalwinkel-Lichtverteilung des eingetretenen Strahls verbreitert wird im Vergleich zu der eines Strahls, der in einen Zentralabschnitt des Flüssigkristallanzeige-Panels (106) eintritt; und Krümmungsradien der Vielzahl von Konkavelementen gebildet sind, so dass ein Krümmungsradius eines Konkavelementes, das bei einem Randabschnitt des Lichtverteilungs-Steuerbauteils (83) gelegen ist, kleiner ist als ein Krümmungsradius eines Konkavelementes, das bei einem Zentralabschnitt des Lichtverteilungs-Steuerbauteils (83) gelegen ist.