Display panel device having touch input function

摘要

A display panel device has a window, a touch panel laminate and a display panel. The touch panel laminate has: a transparent first substrate layer; a first transparent conductive layer laminated to the first substrate layer through a first undercoat layer; a transparent second substrate layer; and a second transparent conductive layer laminated to the second substrate layer through a second undercoat layer. The second conductive layer faces the first conductive layer through at least the first substrate layer and the first undercoat layer. The first conductive layer is closer to the window than the first substrate layer. A polarizing film layer is bonded to the window, and a λ/4 retardation film layer is disposed between the polarizing film layer and the touch panel laminate. The display panel is disposed on a side opposite to the window with respect to the touch panel laminate.

主权项

1. A display panel device having a capacitive touch input function, comprising a window, a capacitive touch panel laminate and a display panel, the display panel device being characterized in that the touch panel laminate comprises: an optically transparent first substrate layer; a pattern-shaped first transparent electrically conductive layer laminated to one surface of the first substrate layer; and a pattern-shaped second transparent electrically conductive layer disposed to face the first transparent electrically conductive layer across at least the first substrate layer, the first transparent electrically conductive layer being disposed on a side closer to the window with respect to the first substrate layer, wherein:
at least two undercoat layers are disposed between the first transparent electrically conductive layer and the first substrate, and including a near-side undercoat layer located at a side closer to the first transparent electrically conductive layer which has a refractive index less than that of a far-side undercoat layer located at a side farther from the first transparent electrically conductive layer, the near-side undercoat layer having a thickness less than that of the far-side undercoat layer; and a space between the window and one of the layers closest to the window is filled with an optically transparent adhesive.