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View Patent ↗According to one embodiment, a position detecting substrate includes a first base material, a sensing electrode formed of metal on the first base material and configured to detect a position, an adhesive layer facing the first base material and the sensing electrode and including a resin, and a second base material adhered to the sensing electrode by the adhesive layer, wherein assuming the force required to peel the sensing electrode from the first base material to be A, the force required to peel the adhesive layer from the first base material to be B and the force required to peel the second base material from the adhesive layer to be C, then A>B, or A>C.
1. A position detecting substrate comprising:
a first base material;
a sensing electrode formed of metal on the first base material and configured to detect a position;
an adhesive layer facing the first base material and the sensing electrode and including a resin; and
a second base material adhered to the sensing electrode by the adhesive layer, wherein
assuming force required to peel the sensing electrode from the first base material to be A, force required to peel the adhesive layer from the first base material to be B, and force required to peel the second base material from the adhesive layer to be C, then A>B, or A>C, and
assuming force required to peel the adhesive layer from the sensing electrode to be D, then A>D.
2. The position detecting substrate of claim 1 , wherein
C>B>D, or C>D>B.
3. The position detecting substrate of claim 1 , wherein
the resin is formed by polymerizing (meth)acrylate monomers having no hydroxy group.
4. The position detecting substrate of claim 3 , wherein
the resin includes a constitutional unit of formula (1) derived from the (meth)acrylate monomers
where R1 indicates an alkyl group or an aralkyl group which has no hydroxy group, may have an oxide and has a carbon number of 20 or less, or hydrogen, and R2 indicates a methyl group or hydrogen.
5. The position detecting substrate of claim 3 , wherein
a glass-transition temperature Tg of the (meth)acrylate monomers is −60 to 40° C.
6. The position detecting substrate of claim 3 , wherein
the adhesive layer includes inorganic particles.
7. The position detecting substrate of claim 1 , wherein
in an overlapping area of the first base material in which the first base material and the second base material overlap one another, an area occupied by the sensing electrode is 20% or less of the overlapping area.
8. A position detecting substrate comprising:
a first base material;
a sensing electrode formed of metal on the first base material and configured to detect a position;
an adhesive layer facing the first base material and the sensing electrode and including a resin; and
a second base material adhered to the sensing electrode by the adhesive layer, wherein
assuming force required to peel the sensing electrode from the first base material to be A, force required to peel the adhesive layer from the first base material to be B, and force required to peel the second base material from the adhesive layer to be C, then A>B, or A>C, and
in an overlapping area of the first base material in which the first base material and the second base material overlap one another, an area occupied by the sensing electrode is 20% or less of the overlapping area.
9. The position detecting substrate of claim 8 , wherein
the resin is formed by polymerizing (meth)acrylate monomers having no hydroxy group.
10. The position detecting substrate of claim 9 , wherein
the resin includes a constitutional unit of formula (1) derived from the (meth)acrylate monomers
where R1 indicates an alkyl group or an aralkyl group which has no hydroxy group, may have an oxide and has a carbon number of 20 or less, or hydrogen, and R2 indicates a methyl group or hydrogen.
11. The position detecting substrate of claim 9 , wherein
the adhesive layer includes inorganic particles.
12. A position detecting substrate comprising:
a first base material;
a sensing electrode formed of metal on the first base material and configured to detect a position;
an adhesive layer facing the first base material and the sensing electrode and including a resin; and
a second base material adhered to the sensing electrode by the adhesive layer, wherein
assuming force required to peel the sensing electrode from the first base material to be A, force required to peel the adhesive layer from the first base material to be B, and force required to peel the second base material from the adhesive layer to be C, then A>B, or A>C,
the resin is formed by polymerizing (meth)acrylate monomers having no hydroxy group, and
a glass-transition temperature Tg of the (meth)acrylate monomers is −60 to 40° C.
13. The position detecting substrate of claim 12 , wherein
the resin includes a constitutional unit of formula (1) derived from the (meth)acrylate monomers
where R1 indicates an alkyl group or an aralkyl group which has no hydroxy group, may have an oxide and has a carbon number of 20 or less, or hydrogen, and R2 indicates a methyl group or hydrogen.
14. The position detecting substrate of claim 12 , wherein
the adhesive layer includes inorganic particles.