| Patent application number | Description | Published |
|---|
| 20080198144 | OPTICAL WAVEGUIDE FOR TOUCH PANEL - An optical waveguide for a touch panel which includes a planar base; light emitting cores and light incident cores provided on a surface of the base; and an over-cladding layer covering the cores. The light emitting core has a first lens portion provided at the end thereof for suppressing lateral divergence of the emitted light beam, the over-cladding layer has a second lens portion provided in an edge portion thereof covering the end of the light emitting core for suppressing vertical divergence of the emitted light beam, the over-cladding layer has a third lens portion provided in an edge portion thereof covering the end of the light incident core for vertically converging the incident light beam, and the light incident core has a fourth lens portion provided at the end thereof for further laterally converging the incident light beam. | 08-21-2008 |
| 20080279501 | LENS-EQUIPPED OPTICAL WAVE GUIDE DEVICE FOR TOUCH PANEL AND OPTICAL WAVEGUIDE FOR USE IN THE SAME - A lens-equipped optical waveguide device for a touch panel includes an optical waveguide including an under cladding layer, and a plurality of cores formed on a surface of the under cladding layer with respective ends in parallel along one edge portion of the under cladding layer; and a lens device having amounting surface for placing the optical waveguide, and a lens formed in an end portion of the mounting surface. The one edge portion has an end surface which abuts the lens when the optical waveguide is placed on the lens device. The lens device is formed with a protrusion on its abutting surface for abutting the end surface, while the end surface is formed with a recess complementary to the protrusion so that the protrusion and the recess are meshed to cause the end surface and the abutting surface to be in intimate contact with each other. | 11-13-2008 |
| 20080279502 | LENS-EQUIPPED OPTICAL WAVEGUIDE DEVICE FOR TOUCH PANEL AND MANUFACTURING METHOD THEREOF - A lens-equipped optical waveguide device for a touch panel comprises an optical waveguide including an under cladding layer and a plurality of cores; and a lens device having a mounting surface for placing the optical waveguide thereon and a lens formed in an end portion of the mounting surface. The mounting surface of the lens device includes an adhesive receiving groove formed therein, and the optical waveguide includes a through hole penetrating in the direction of the thickness of the optical waveguide and in communication with the adhesive receiving groove so that the bonding between the mounting surface and the optical waveguide with the adhesive is achieved by using the adhesive receiving groove and the through hole. | 11-13-2008 |
| 20090102815 | OPTICAL WAVEGUIDE FOR TOUCH PANEL AND TOUCH PANEL USING THE SAME - An optical waveguide for a touch panel and a touch panel using the same. A lens portion | 04-23-2009 |
| 20090174683 | OPTICAL WAVEGUIDE FOR TOUCH PANEL, TOUCH PANEL USING THE OPTICAL WAVEGUIDE AND MANUFACTURING METHOD OF THE OPTICAL WAVEGUIDE - An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens and which achieves the appropriate emission and reception of light beams, to provide a touch panel using the optical waveguide, and to provide a manufacturing method of the optical waveguide for a touch panel. A total distance (L) which is the sum of a distance from the center of curvature of the first lens portion | 07-09-2009 |
| 20100182279 | DISPLAY SYSTEM HAVING OPTICAL COORDINATE INPUT DEVICE - In a display device having a coordinate input device in a display system, light beams emitted from all the plurality of light emitting devices are arranged in an X-Y matrix inside a rectangular coordinate input area. When light shielding signals are detected through a light receiving device in X direction and also through a light receiving device in Y direction, the optical coordinate input device obtains the position coordinate of an intersection of a line from the light receiving device in X direction and a line from the light receiving device in Y direction, and displays position information on the display screen in accordance with thus-obtained position coordinate. | 07-22-2010 |
| 20100259508 | OPTICAL WAVEGUIDE WITH PHOTOELECTRIC CONVERSION ELEMENT AND OPTICAL TOUCH PANEL - An optical waveguide with photoelectric conversion element includes an under-cladding layer and an over-cladding layer including a thick portion having a large thickness and a thin portion having a small thickness. The optical waveguide with photoelectric conversion element is bendable in a region including the thin portion in such a direction that the under-cladding layer faces inward. This makes it possible to arrange a photoelectric conversion element of each of the optical waveguides with photoelectric conversion element and its associated circuit on the back side of a display panel of an optical touch panel, thereby reducing the size of a frame surrounding a coordinate input region of the optical touch panel and the difference in level on the surface of the frame and its vicinity. | 10-14-2010 |
| 20110025622 | TOUCH PANEL AND DISPLAY DEVICE WITH TOUCH PANEL - There is provided a touch panel including a coordinate input region composed of a double-layered structure which comprises: an input selective region | 02-03-2011 |
| 20110063255 | OPTICAL WAVEGUIDE WITH LIGHT-EMITTING ELEMENT AND OPTICAL TOUCH PANEL WITH THE SAME - In an optical waveguide | 03-17-2011 |
| 20110148817 | OPTICAL WAVEGUIDE WITH LIGHT-EMITTING ELEMENT AND OPTICAL TOUCH PANEL WITH THE SAME - A main path in an optical waveguide with a light-emitting element has two sides faced to each other: one side has a plurality of branched points and the other side does not have any branched points. A width W of the main path becomes narrower as the main path moves away from a light-emitting element. An angle α formed by the main path and a light guiding direction in each branched point of each branched path is 0.1° to 2.0°. An angle θ formed by the other side without branched points and the light guiding direction of the main path is 0.3° to 1.7°. | 06-23-2011 |
