Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Nobuhiro Yamaue

Akira Nakanishi

Toshiharu Fukui

Yoshiharu Abe

Shigeyuki Fujii

Hirofumi Komiya

Kenji Inoue

Tetsuo Murakami

Yuichi Yamamoto

Kenichi Takabatake

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.

Touch panel with conductive layers formed of parallel strips

A touch panel has an upper board having an upper conductive layer, a lower board having a lower conductive layer, a pair of upper electrodes along the periphery of the upper conductive layer and having an upper electrode lead, a pair of lower electrodes along the periphery of the lower conductive layer and having a lower electrode lead, and a slit formed at the upper and lower conductive layers. One of the upper electrodes is formed along a side of the upper conductive layer, and the other of the upper electrodes is formed in a substantially U shape surrounding a whole periphery excluding the upper electrode lead. One of the lower electrodes is formed in a direction orthogonal to the side of the upper conductive layer, and the other of the lower electrodes is formed in a substantially U shape surrounding a whole periphery excluding the lower electrode lead.

Touch panel

The invention relates to touch panels for use in a variety of electronic apparatuses, and designed to prevent separation of a lower substrate and an antireflection layer, and to ensure reliable operation. An undercoat layer () made of any of silicon oxide and a compound having a principal ingredient of silicon oxide is disposed between the antireflection layer () and the lower substrate () made of glass having the same principal ingredient of silicon oxide, to improve strength of adhesion between the lower substrate () and the antireflection layer (), thereby preventing separation of the antireflection layer () from the lower substrate (), and providing the touch panel with reliable operation.

The touch panel has a light-transmissive upper substrate, a light-transmissive lower substrate, and a bonding layer. The lower surface of the upper substrate is formed thereon with an upper conductive layer. The top surface of the lower substrate is formed thereon with a lower conductive layer facing the upper conductive layer with an air gap. The bonding layer is formed on at least one of inner edges of the lower surface of the upper substrate and the top surface of the lower substrate, and additionally has an open groove communicating with the air gap. The makeup provides a touch panel reliably operable with a simple structure.

A touch panel includes a first substrate, a second substrate, and a plurality of insulating grooves. The first substrate has a first conductive layer, and a plurality of first electrodes that extend from both ends of the first conductive layer and that have first electrode lead sections. The second substrate has a second conductive layer, and a plurality of second electrodes that extend form both ends of the second conductive layer and that have second electrode lead sections. The insulating grooves are provided in at least one of the first conductive layer and the second conductive layer between any one of the first electrode lead sections and the second electrode lead sections. This structure provides a touch panel having a smaller pitch between the first electrode lead sections or between the second electrode lead sections and having stable electrical insulation and connection.

A touch panel and an electronic device using the touch panel have satisfactory, reliable operability. The touch panel is used for an operating section of the electronic device. In this touch panel, upper and lower substratesandhave upper and lower electrode layers, respectively, and face with an established spacing. Respective center portions of the substratesandprotrude upward like a dome.

Touch panel and electronic equipment using the same

A touch panel has a first transparent substrate with a first transparent conductive layer, and a second transparent substrate with a second transparent conductive layer. Color of the touch panel has a b* value of 2.0 or smaller with respect to the L*a*b* color specification in accordance with JIS Z 8729. At least one of the first and second transparent substrates is provided with a color adjustment layer providing optical interference. The touch panel may further have a third transparent substrate provided with a color adjustment layer, or a third transparent substrate containing a colorant having color complementary to a color of the transparent conductive layer. The touch panel has a less yellowish appearance, and shows minimal color change of a color display device. When attached on a liquid crystal display device in an electronic apparatus, the electronic apparatus exhibits a high grade color display without a sense of incompatibility.

Growing community of inventors

Osaka, Japan

Nobuhiro Yamaue