US 6,784,948 B2Granted

Touch panel for display device with pet film having transparent gel layer

AssigneeMinebea Co., Ltd.

InventorsSatoshi Kawashima, Katsuji Ishigami

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Abstract

A touch panel has a reduced whole thickness when attached to a display device, increases the accuracy of the positional information, and improves the display quality and durability inexpensively. One of a pair of resistive layers facing each other across insulating dot spacers is laid on a light-transmissible flat plate formed of a PET film rather than a glass plate, and a light conductive plate of a front light unit is integrated with an outer surface of the light-transmissible flat plate. An AR film having a transparent gel layer is disposed between the PET film and the light conductive plate. The transparent gel layer is of a gel material such as silicone rubber and is applied integrally on the AR film, which is formed such that anti-reflection treatment is applied on a surface of a base material of a FET film.

Claims10

Dependent claims

A touch panel for a display device:

which is structured such that one of a pair of resistive layers disposed so as to face each other and to sandwich a plurality of insulating dot spacers is laid on a light-transmissible flat plate formed of a polyethylene terephthalate film;
which is disposed close to a display device such that the light-transmissible flat plate faces toward a display surface of the display device and that a front light unit comprising a light source and a light conductive plate to guide light emitted from the light source toward the display surface of the display device is interposed between the light-transmissible flat plate and the display device;
and in which an outer surface of the other resistive layer of the pair is touched to be pressed thereby generating a signal corresponding to a position touched,
wherein a transparent cushioning member composed of a shock-absorbing layer and a base layer for bracing the shock-absorbing layer is disposed between the light conductive plate and the light-transmissible flat plate.

1 more element

Dependencies are inferred from the claim text.