A touch panel includes a first substrate, a second substrate, a wiring substrate provided with a plurality of wiring patterns formed thereon, and an anisotropic conductive adhesive layer. The first substrate has a first conductive layer and first electrodes extending from two opposite sides of the first conductive layer. The second substrate has a second conductive layer confronting the first surface with a space, and second electrodes extending from two opposite sides of the second conductive layer. The anisotropic conductive adhesive layer connects a terminal portion of the wiring patterns to at least one of the first electrodes and the second electrodes. The wiring substrate has a slit or an aperture between the wiring patterns at one end thereof. The touch panel of this structure is easy to produce, and provides reliable operation and electrical connection and separation.
1. A touch panel comprising:
a first substrate of optical transparency having:
a first surface;
a first conductive layer formed at the first surface; and
first electrodes formed in a manner to extend from two opposite sides of the first conductive layer;
a second substrate of optical transparency having:
a second surface;
a second conductive layer formed at the second surface in a manner to confront the first surface with a space; and
second electrodes formed in a manner to extend from two opposite sides of the second conductive layer in a direction orthogonal to the two opposite sides of the first conductive layer at which first electrodes formed;
a wiring substrate having:
a third surface;
a fourth surface; and
three or more wiring patterns formed on at least one of the third surface and the fourth surface; and
an anisotropic conductive adhesive layer connecting a terminal portion of at least one of the wiring patterns to at least one of the first electrodes and the second electrodes,
wherein spaces are provided between adjacent wiring patterns at an end of the wiring patterns, and a slit or an aperture is disposed at each of the spaces of the wiring patterns.
2. The touch panel of claim 1 , wherein a number of the wiring patterns is four, and a number of the spaces and the slits or the apertures is three.
3. A touch panel comprising:
a first substrate of optical transparency having:
a first surface;
a first conductive layer formed at the first surface;
first electrodes formed in a manner to extend from two opposite sides of the first conductive layer; and
first terminal portions connected to the first electrodes, respectively;
a second substrate of optical transparency having:
a second surface;
a second conductive layer formed at the second surface in a manner to confront the first surface with a space;
second electrodes formed in a manner to extend from two opposite sides of the second conductive layer in a direction orthogonal to the two opposite sides of the first conductive layer at which first electrodes formed; and
second terminal portions connected to the second electrodes, respectively;
a wiring substrate having:
a third surface;
a fourth surface; and
a plurality of wiring patterns formed on at least one of the third surface and the fourth surface; and
an anisotropic conductive adhesive layer connecting the wiring patterns to at least one of the first electrodes and the second electrodes, wherein:
a first space is provided between adjacent first terminal portions at an end of the first terminal portions,
a second space is provided between adjacent second terminal portions at an end of the second terminal portions, and
a slit or an aperture is disposed at each of the first and second spaces.
4. The touch panel of claim 3 , wherein a third space is provides between adjacent first and second terminal portions at an end of the first and second terminal portions, and a slit or an aperture is further disposed at the third space.