Touch-screen assembly with rigid interface between cover sheet and frame
First Claim
Patent Images
1. A touch-screen assembly for performing pressure sensing or force sensing due to at least one touching force, comprising:
- a cover sheet having an upper surface and a bottom surface, the cover sheet having touch-sensing capability;
a frame having an upper surface portion and a base;
a plurality of spaced-apart islands made of anon-adhesive material and disposed on the upper surface portion of the frame, the islands having a height H and a Young'"'"'s modulus of greater than 1 MPa, and wherein there is a gap between each island and the bottom surface of the cover sheet; and
a compressible adhesive material disposed between the cover sheet and the upper surface portion of the frame and between the islands but not within the gaps, the compressible adhesive material serving to adhere the cover sheet to the frame and having an uncompressed height h≧
H that defines a gap dimension h−
H so that the islands limit compression of the compressible adhesive material to the gap dimension of h−
H when the cover sheet is subjected to the at least one touching force.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch-screen assembly for performing pressure sensing or force sensing is disclosed. The touch-screen assembly includes a cover sheet having touch-sensing capability and a frame having an upper surface portion. Spaced-apart adhesive islands are disposed between the cover sheet and the upper surface portion of the frame. The adhesive islands serve to secure the cover sheet to the frame and have a Young'"'"'s modulus of greater than 1 MPa so that the energy associated with the touching force is not absorbed by the adhesive island. This makes for more accurate pressure-based or force-based touch sensing.
-
Citations
18 Claims
-
1. A touch-screen assembly for performing pressure sensing or force sensing due to at least one touching force, comprising:
-
a cover sheet having an upper surface and a bottom surface, the cover sheet having touch-sensing capability; a frame having an upper surface portion and a base; a plurality of spaced-apart islands made of anon-adhesive material and disposed on the upper surface portion of the frame, the islands having a height H and a Young'"'"'s modulus of greater than 1 MPa, and wherein there is a gap between each island and the bottom surface of the cover sheet; and a compressible adhesive material disposed between the cover sheet and the upper surface portion of the frame and between the islands but not within the gaps, the compressible adhesive material serving to adhere the cover sheet to the frame and having an uncompressed height h≧
H that defines a gap dimension h−
H so that the islands limit compression of the compressible adhesive material to the gap dimension of h−
H when the cover sheet is subjected to the at least one touching force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of forming a touch-screen assembly for performing pressure sensing or force sensing due to at least one touching force, comprising:
-
disposing on a surface portion of a frame a plurality of islands made of a non-adhesive material and having a height H and a Young'"'"'s modulus of greater than 1 MPa; disposing a compressible adhesive material on the surface portion of the frame between the islands and not atop the islands, the compressible material having an uncompressed height h≧
H; andadhering a cover sheet to the frame using the compressible adhesive material to define gaps having a gap dimension h−
H between the islands and the cover sheet, and wherein the plurality of islands limit the compression of the compressible adhesive layer to the gap dimension h−
H when the at least one touching force is applied to the cover sheet. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
Specification