Liquid adhesive lamination for precision adhesive control
First Claim
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1. A method comprising:
- forming an adhesive layer on a first substrate;
aligning a second substrate to the first substrate; and
applying a pressure to bond the first substrate to the second substrate, wherein the adhesive layer is formed in a three dimensional gradient pattern, wherein the three dimensional gradient pattern has at least one planar surface that extends above a surface of the first substrate, and wherein the three dimensional gradient pattern is a gradient pyramid pattern, wherein the first substrate is associated with an electronic device.
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Abstract
Methods for liquid adhesive lamination for precision adhesive control are provided. Precision liquid adhesive control can be obtained by first patterning liquid adhesive in a thin pre-coat layer on a substrate. A second adhesive layer can then be patterned on top of the pre-coat layer. When the second substrate is pressed onto the first substrate, the second substrate first comes into contact with the second adhesive layer. The adhesive can then be spread uniformly across the two substrates without forming voids. Alternatively, a single liquid adhesive layer can be formed in a three dimensional gradient pattern.
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Citations
19 Claims
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1. A method comprising:
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forming an adhesive layer on a first substrate; aligning a second substrate to the first substrate; and applying a pressure to bond the first substrate to the second substrate, wherein the adhesive layer is formed in a three dimensional gradient pattern, wherein the three dimensional gradient pattern has at least one planar surface that extends above a surface of the first substrate, and wherein the three dimensional gradient pattern is a gradient pyramid pattern, wherein the first substrate is associated with an electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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forming an adhesive layer on a first substrate by forming the adhesive layer in a three dimensional gradient pattern that includes a first portion and a protruding second portion on the first portion; aligning a second substrate to the first substrate; and applying pressure to bond the first substrate to the second substrate, wherein at least one of the first and second substrates comprises a touch sensor substrate. - View Dependent Claims (12, 13, 14)
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15. A method comprising:
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forming a patterned adhesive layer on a substrate that is associated with an electronic device display, wherein the patterned adhesive layer is formed in a three dimensional gradient pattern; aligning an additional substrate to the substrate that is associated with the electronic device display; and adhering the substrate that is associated with the electronic device display to the second substrate using the patterned adhesive layer, wherein forming the patterned adhesive layer comprises forming a pyramid shaped patterned adhesive layer. - View Dependent Claims (16, 17, 18, 19)
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Specification