LASER DECAL TRANSFER OF ELECTRONIC MATERIALS
First Claim
1. A method for laser deposition comprising:
- providing a receiving substrate;
providing a target substrate spaced away from the receiving substrate and comprising a laser transparent support having a back surface and a front surface, wherein the front surface of the target substrate is coated with a layer of a rheological compound of selected thickness and viscosity; and
providing a laser beam directed through the back of the target substrate to illuminate a given area of the coating layer, said incident laser beam having an energy density selected such as to uniformly release and non-evaporately transfer a region of the coating from the target substrate towards the receiving substrate, wherein the transferred rheological compound forms a deposit at a defined location on the surface of the receiving substrate substantially 1-to-1 in size and shape of the incident laser illuminated area, such as to cause decal transfer.
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Accused Products
Abstract
A laser decal transfer is used to generate thin film features by directing laser pulses of very low energy at the back of a target substrate illuminating an area of a thin layer of a high viscosity rheological fluid coating the front surface of the target. The illuminated area is shaped and defined by an aperture centered about the laser beam. The decal transfer process allows for the release and transfer from the target substrate to the receiving substrate a uniform and continuous layer identical in shape and size of the laser irradiated area. The released layer is transferred across the gap with almost no changes to its initial size and shape. The resulting patterns transferred onto the receiving substrate are highly uniform in thickness and morphology, have sharp edge features and exhibit high adhesion, independent of the surface energy, wetting or phobicity of the receiving substrate.
63 Citations
23 Claims
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1. A method for laser deposition comprising:
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providing a receiving substrate; providing a target substrate spaced away from the receiving substrate and comprising a laser transparent support having a back surface and a front surface, wherein the front surface of the target substrate is coated with a layer of a rheological compound of selected thickness and viscosity; and providing a laser beam directed through the back of the target substrate to illuminate a given area of the coating layer, said incident laser beam having an energy density selected such as to uniformly release and non-evaporately transfer a region of the coating from the target substrate towards the receiving substrate, wherein the transferred rheological compound forms a deposit at a defined location on the surface of the receiving substrate substantially 1-to-1 in size and shape of the incident laser illuminated area, such as to cause decal transfer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification