US 8,803,830 B2Granted

Touch panel with conductive layers formed of parallel strips

AssigneePanasonic Corporation

InventorsAkira Nakanishi, Nobuhiro Yamaue, Toshiharu Fukui

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Abstract

A touch panel includes a first substrate having a first conductive layer on one surface; a second substrate having a second conductive layer on a surface on a side facing the first conductive layer; a plurality of first electrodes extending from the first conductive layer; and a plurality of second electrodes extending from the second conductive layer. The first conductive layer is formed of a plurality of parallel strips; and the plurality of first electrodes are formed of a straight portion extending in a predetermined direction, and an inclined portion coupled to the straight portion by being inclined by a predetermined angle with respect to a direction orthogonal to the straight portion. Fading, thickness variation and the like at the time of printing can be prevented and fine patterning can be easily carried out, so that an inexpensive touch panel in which overall miniaturization is achieved can be obtained.

Claims12

Dependent claims

A touch panel comprising:

a first substrate;
a light transmitting first conductive layer formed on one surface of the first substrate;
a second substrate;
a light transmitting second conductive layer formed on a surface of the second substrate facing the first conductive layer;
a plurality of first electrodes extending from the first conductive layer on the first substrate;
and
a plurality of second electrodes extending from the second conductive layer on the second substrate;
wherein the first conductive layer is formed of a plurality of parallel strips, the first conductive layer being formed of a first material;
wherein each of the plurality of first electrodes is formed of
a screen-printed first straight portion extending in a predetermined direction and being formed of a second material different than the first material, and
a sputtered first inclined portion coupled to the first straight portion and being inclined by a predetermined angle with respect to a direction orthogonal to the first straight portion;
wherein at least one of the first inclined portions is formed of the first material;
wherein the light transmitting second conductive layer is formed of a third material;
and
wherein at least portions of the second electrodes are formed of a fourth material different than the third material,
wherein the first material and the third material are indium tin oxide or tin oxide, and the second material and the fourth material are silver or carbon.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/379,076Filed 28 Jun 2010
Priority: JP 2009-1566981 Jul 2009
Published: US 2012/0098779 A126 Apr 2012
Granted: 12 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
G06F 3/047
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: using sets of wires, e.g. crossed wires
G06F 3/041
Arrangements for converting the position or the displacement of a member into a coded form: digitisers, e.g. for touch screens or touch pads,…
G06F 3/045
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: using resistive elements, e.g. a single continuous…