Touch input device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-11467702-B2
Application number	US-201916708621-A
Country	US
Kind code	B2
Filing date	Dec 10, 2019
Priority date	Sep 15, 2015
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A touch input device and a method for manufacturing the same are disclosed. The touch input device includes: a first base including a metal compound; a first pattern groove formed over one surface of the first base; a first sense pattern formed over the first pattern groove and including a conductive material; a second base stacked over the first base, and configured to include a metal compound; a second pattern groove formed over one surface of the second base; a second sense pattern formed over the second pattern groove, including a conductive material, and spaced apart from the first sense pattern; and a line unit connecting the first sense pattern and the second sense pattern to an integrated-circuit.

First claim

What is claimed is:

1. A touch input apparatus comprising:
a base including a metal compound;
a plurality of first pattern grooves formed over one surface of the base;
a plurality of first sense patterns formed over the plurality of first pattern grooves and including a conductive material;
a plurality of second pattern grooves formed over one surface of the base;
a plurality of second sense patterns formed over the plurality of second pattern grooves, including a conductive material, and spaced apart from the plurality of first sense patterns; and
a line unit connecting the plurality of first sense patterns and the plurality of second sense patterns to a circuit substrate,
wherein the plurality of first sense patterns includes:
a trunk part extending in a longitudinal direction; and
a plurality of leg parts branched in a direction perpendicular to the trunk part and extending to the plurality of second sense patterns,

wherein the plurality of second sense patterns includes:
a trunk part extending in the longitudinal direction; and
a plurality of leg parts branched in a direction perpendicular to the trunk part and extending to the plurality of first sense patterns,

wherein the leg parts of the plurality of second sense patterns are arranged to face the leg parts of the plurality of first sense patterns, and are disposed between the leg parts of the plurality of first sense patterns,
wherein the plurality of first sense patterns and the plurality of second sense patterns include a plurality of columns,
wherein a column of one of the plurality of first sense patterns and a column of one of the plurality of second sense patterns adjacent to the one of the plurality of first sense patterns form a single channel,
wherein columns of the plurality of first sense patterns and columns of the plurality of second sense patterns, respectively, form a plurality of channels, wherein the touch input apparatus further comprises a ground line disposed between the plurality of first sense patterns and the plurality of second sense patterns of adjacent channels and extending in a direction parallel to the longitudinal direction along which the trunk parts of the plurality of first sense patterns and the plurality of second sense patterns are elongated,
wherein a lower part of the plurality of first sense patterns is accommodated in the plurality of first pattern grooves formed over a front surface of the base and an upper part of the plurality of first sense patterns protrudes from the surface of the base,
a lower part of the plurality of second sense patterns is accommodated in the plurality of second pattern grooves formed over the surface of the base, and an upper part of the plurality of second sense patterns protrudes from the surface of the base.

2. The touch input apparatus according to claim 1 , further comprising:
the circuit substrate configured to receive signals regarding capacitance of the plurality of first sense patterns and the plurality of second sense patterns so as to interpret an input touch signal.

3. The touch input apparatus according to claim 1 , wherein the base includes:
a first resin including at least one of: Polycarbonate (PC), Polyamide (PA), and acrylonitrile—butadiene- 13 styrene copolymer (ABS); and
a metal oxide including at least one of: magnesium (Mg), chrome (Cr), copper (Cu), barium (Ba), iron (Fe), titanium (Ti), and aluminum (Al).

4. The touch input apparatus according to claim 3 , wherein the base is coated over a surface formed of a second resin, glass, or leather.

5. The touch input apparatus according to claim 1 , wherein:
a half of the plurality of first sense patterns is accommodated in the plurality of first pattern grooves, and the remaining half of the plurality of first sense patterns protrudes from one surface of the base; and
a half of the plurality of second sense patterns is accommodated in the plurality of second pattern grooves, and the remaining half of the plurality of second sense patterns protrudes from one surface of the base.

6. The touch input apparatus according to claim 1 , wherein:
the plurality of first sense patterns protrudes from one surface of the base by a thickness of 10 μm, and the plurality of second sense patterns is recessed from one surface of the base by a thickness of 10 μm.

7. The touch input apparatus according to claim 1 , wherein:
each of the plurality of first sense patterns and the plurality of second sense patterns is integrated with the line unit.

8. The touch input apparatus according to claim 1 , wherein:
the base is formed to extend to a region in which the line unit is provided.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kwon Gideok
• Lee Jong Bok

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• C23C18/1639

  Substrates other than metallic, e.g. inorganic or organic or non-conductive · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• B29L2031/34

  Electrical apparatus, e.g. sparking plugs or parts thereof · CPC title