公开(公告)号：US20120268379A1

公开(公告)日：2012-10-25

申请号：US13518784

申请日：2010-11-29

申请人： Toshikazu Yoshioka ,  Yasunori Takeda

发明人： Toshikazu Yoshioka ,  Yasunori Takeda

IPC分类号： G06F3/02

CPC分类号： H01H13/83 ,  H01H2219/062 ,  H01H2219/064 ,  H01H2221/07

摘要： To provide a technique which involves a key sheet integrally including a light guide sheet and having a plurality of illumination areas, the technique preventing light leakage from the boundary between the individual illumination areas and providing high durability against a repeated pressing operation. A mask layers cover the opening edges of slits of a light guide sheet on the operation surface side. The mask layers can prevent emission of light from the openings of the slits to the outside, the light having leaked from the end faces of the light guide sheet, and the end faces forming the slits. A front sheet and a back side cover can enhance the durability of a base sheet, the front sheet adhering to the light guide sheet so as to cover the slits.

摘要翻译： 为了提供一种技术，其包括具有导光片并且具有多个照明区域的一体的按键板，该技术防止来自各个照明区域之间的边界的光泄漏并且提供对于重复按压操作的高耐久性的技术。 掩模层覆盖操作表面侧上的导光片的狭缝的开口边缘。 掩模层可以防止从狭缝的开口向外部的光的发射，从导光片的端面泄漏的光以及形成狭缝的端面。 前片和后侧盖可以提高基片的耐久性，前片与导光片粘合以覆盖狭缝。

公开(公告)号：US20100147661A1

公开(公告)日：2010-06-17

申请号：US12344739

申请日：2008-12-29

申请人： Yasunori Takeda

发明人： Yasunori Takeda

IPC分类号： H01H9/00 ,  H01H11/00

CPC分类号： H01H13/83 ,  H01H2219/03 ,  H01H2219/034 ,  H01H2219/044 ,  H01H2219/056 ,  H01H2219/062 ,  H01H2219/064 ,  Y10T29/49105

摘要： Provided is a key sheet or a lightproof light guiding sheet guiding light efficiently through an interior of the key sheet and preventing light leakage through a periphery of key tops. On a base sheet, a transparent resin layer, and further, a lightproof dark print layer are provided as needed, with at least one of the transparent resin layer and the lightproof dark print layer being formed of a non-corrosive coating liquid. Further, a smooth surface is formed between the base sheet and the dark print layer.

摘要翻译： 提供了一种按键板或防光导光板，其有效地引导光通过键盘的内部并防止通过键顶的周边的光泄漏。 在基片上，根据需要设置透明树脂层，并且还设置有防光暗印刷层，至少一个透明树脂层和防光深色印刷层由非腐蚀性涂布液形成。 此外，在基片和深色印刷层之间形成光滑的表面。