Optical waveguide for touch panel
AssigneeNitto Denko Corporation
InventorTakami Hikita
Life of this patent
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Abstract
An optical waveguide for a touch panel which is arranged for prevention of breakage of bending portions thereof and reduction in light loss. The optical waveguide for a touch panel is configured in a band shape so as to be wrapped around a periphery of a display of the touch panel with a bending portion thereof being positioned at a corner of the periphery of the display, and comprises a core, an under-cladding layer and an over-cladding layer which cooperatively enclose the core, and a reinforcement layer provided at least on a surface portion of the under-cladding layer present on an outer side of the bending portion, wherein the over-cladding layer is absent on an inner side of the bending portion.
Claims18
A touch panel optical waveguide wrapped around a periphery of a display of a touch panel and having a bending portion positioned at a corner of the periphery of the display, the optical waveguide further comprising:
- a core;
- an under-cladding layer and an over-cladding layer which cooperatively enclose the core;
- and
- a reinforcement layer provided at least on a surface portion of the under-cladding layer present on an outer side of the bending portion,
- wherein the over-cladding layer is absent on an inner side of the bending portion.
Dependencies are inferred from the claim text.