Input device and method of producing input apparatus
View Patent ↗An input device includes a sensor member that detects input position information; and a protective member that protects the sensor member, wherein the protective member includes a window-shaped light-transmissive region transmitting light in the thickness direction, a transparent substrate having an input surface on a first surface, and a decorative layer disposed on a second first of the transparent substrate. The decorative layer is stacked on the transparent substrate so as to surround the light-transmissive region, and an inclined section is provided at the inner edge of the decorative layer; the transparent filler is stacked on the second surface of the transparent substrate to cover the light-transmissive region and the inclined section; and the sensor member and the protective member are bonded together with the adhesive layer disposed on the transparent filler and the decorative layer.
1. An input device comprising:
a sensor member configured to detect input position information;
a protective member configured to protect the sensor member; and
an adhesive layer bonding the sensor member and the protective member together, the adhesive layer transmitting visible light,
wherein the protective member includes:
a transparent substrate having a first surface providing an input surface and a second surface opposite to the first surface and facing the sensor member;
a light-transmissive region configured to transmit light in a thickness direction of the transparent substrate;
a decorative layer disposed on the second surface of the transparent substrate, the decorative layer surrounding and defining the light-transmissive region, an inner edge portion of the decorative layer having an inclined section tapered toward the light-transmissive region; and
a transparent filler provided on the second surface of the transparent substrate to cover the light-transmissive region and at least part of the inclined section of the decorative layer, the transparent filler transmitting visible light,
and wherein the sensor member and the protective member are bonded together with the adhesive layer disposed on the transparent filler and the decorative layer.
2. The input device according to claim 1 , wherein an inclination angle of the inclined section with respect to the second surface of the transparent substrate is in a range of 3° to 60°.
3. The input device according to claim 1 , wherein an inclination angle of the inclined section with respect to the second surface of the transparent substrate is in a range of 5° to 60°.
4. The input device according to claim 1 , wherein an inclination angle of the inclined section with respect to the second surface of the transparent substrate is in a range of 30° to 60°.
5. The input device according to claim 1 , wherein the transparent filler is a resin transmitting visible light.
6. The input device according to claim 1 , wherein the transparent filler is an ultraviolet curable resin.
7. The input device according to claim 1 , wherein the sensor member is a capacitive touch sensor.
8. The input device according to claim 1 , wherein the sensor member is a resistive touch sensor.
9. The input device according to claim 1 , wherein
the sensor member includes:
a sensor substrate having an electrode pattern formed on a first surface and configured to detect input position information; and
a wiring patter disposed on the first surface and periphery of the electrode pattern,
wherein the first surface of the sensor substrate faces the protective member, and the electrode pattern and the wire pattern together form a depression on the first surface,
wherein the transparent filler and the decorative layer on the second surface of the transparent substrate of the protective member form a protrusion, and
wherein the protective member and the sensor member are stacked by engaging the depression and the protrusion with the adhesive layer therebetween.
10. A method of producing an input device comprising the steps of:
providing a protective member including a transparent substrate, the transparent substrate having a first surface providing an input surface and a second surface opposite to the first surface, the providing a protective member comprising;
a) forming a decorative layer on the second surface of the transparent substrate, the decorative layer surrounding and defining a light-transmissive region and having an inclined section tapered toward the light-transmissive region at an inner edge portion thereof;
b) applying a transmissive filler material in the light-transmissive region of the transparent substrate with a gap provided between the transparent filler material and the decorative layer;
c) allowing the transparent filler material to spread over the gap and adhere to the light-transmissive region of the transparent substrate and at least part of the inclined section of the decorative layer by maintaining the transparent substrate with the applied transparent filler material for a predetermined period of time; and
d) curing the transparent filler material to form a transparent filler; and
combining the protective member with a sensor member configured to detect input position information, the combining comprising:
e) bonding the protective member and the sensor member with an adhesive layer disposed over the transparent filler and the decorative layer.
11. The method of producing an input device according to claim 10 , wherein, in step a, an inclination angle of the inclined section with respect to the second surface of the transparent member is in a range of 3° to 60°.
12. The method of producing an input device according to claim 10 , wherein, in step a, an inclination angle of the inclined section with respect to the second surface of the transparent member is in a range of 5° to 60°.
13. The method of producing an input device according to claim 10 , wherein, in step a, an inclination angle of the inclined section with respect to the second surface of the transparent member is in a range of 30° to 60°.
14. The method of producing an input device according to claim 10 , wherein, in step b, the transparent filler material is a transparent resin.
15. The method of producing an input device according to claim 10 , wherein, in step b, the transparent filler material is applied by a printing method.
16. The method of producing an input device according to claim 10 , wherein, in step d, the transparent filler material is cured by irradiating the transparent filler material with ultraviolet rays.
17. The method of producing an input device according to claim 10 , wherein, in step e, the sensor member is a capacitive touch sensor.
18. The method of producing an input device according to claim 10 , wherein, in step e, the sensor member is a resistive touch sensor.
19. The method of producing an input device according to claim 10 , wherein in step e, the decorative layer is placed over a wiring pattern of the sensor member.