Method and apparatus for making capacitive touch panels
AssigneeM-Solv Limited
InventorDavid Charles Milne
Life of this patent
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Abstract
An apparatus for laser scribing two transparent electrically conductive layers (72A,B; 73A,B) deposited on opposite surfaces of a transparent substrate (71A; 71B) comprising; a laser beam (74A), one or more lenses (75A, 76A, 77A) configured and positioned for adjusting the focal spot (78A; 78B) of the laser beam between a first position (78A) and a second position (78B), means for holding a substrate in a plane between the first and second position and means for moving the relative positions of the substrate (71A; 71B) and laser beam (74A) in two dimensions within the plane or a plane parallel to it, wherein in use, the first and second positions (78A; 78B) coincide with or are adjacent to exposed surfaces of the two transparent electrically conducting layers (72A,B; 73A,B).
Claims14
A method for laser scribing two transparent electrically conductive layers deposited on opposite surfaces of a transparent substrate comprising:
- 1. directing a laser beam through one or more lenses to a first focal spot on or closely adjacent an exposed surface of a first of the two layers;
- 2. initiating relative movement between the laser and the substrate in two axes in a plane orthogonal to the axis of the laser beam whereby to scribe an electrode pattern on the first of the two layers;
- 3. repositioning the one or more lenses and focusing the laser beam through the transparent substrate at a second focal spot on or closely adjacent an exposed surface of the second of the two layers;
- 4. initiating relative movement between the laser and the substrate orthogonal to the axis of the laser beam whereby to scribe an electrode pattern on the second of the two layers.
An apparatus for laser scribing two transparent electrically conductive layers deposited on opposite surfaces of a transparent substrate comprising:
- a laser beam, one or more lenses configured and positioned for focusing the laser beam to a first position, and for adjusting the position of the focal spot of the laser beam between the first position through the transparent substrate to a second position, means for holding a substrate in a plane between the first and second position and means for moving the relative positions of the substrate and laser beam in two dimensions within the plane or a plane parallel to it, wherein in use, .the first and second positions coincide with or are adjacent to exposed surfaces of the two transparent electrically conducting layers.
Dependencies are inferred from the claim text.