US 6,552,718 B2 · Contact structure of substrates of touch panel and method of bonding the same

Abstract

A contact structure of a touch panel having X-axis (Y-axis) potential compensating electrodes arranged along peripheries of the conductive film of a substrate; a FPC contact for another substrate constructed on an electrode arrangement defined by electrodes; the electrodes arranged along outermost peripheries of the transparent conductive film of the another substrate; and another FPC contact for the another substrate constructed on the electrode arrangement defined by the electrodes arranged on the film of the another substrate. A method for bonding the substrates of the touch panel includes forming an insulator layer around a flexible printed cable (FPC) contact formed on the electrodes; forming a new low resistive metal layer, to which the FPC is attached, on the insulator layer; forming dot spacers out of insulating material within the active area so as to achieve electric insulation between the substrates; connecting the FPC with a band region formed by the insulator layer and the low resistive metal layer, in order to apply signals to the substrates from the outside after the insulator layer, the low resistive: metal layer and the dot spacers have been formed between the substrates; and bonding together the substrate for reading an X coordinate and the another substrate for reading a Y coordinate so that the transparent conductive films can face each other, after connection between the insulator layer, the low resistive metal layer, the dot spacers and the FPC.

Claims9

Dependent claims

A substrate contact structure for use in a resistive touch panel including a first substrate having a transparent conductive film in which an active area is defined by symmetrically providing X-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, a second substrate bonded together to said first substrate and having a transparent conductive film in which an active area is defined by symmetrically providing Y-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, dot spacers filled between said two substrates so as to ensure electric isolation between said first and second substrates, and contacts concentrated on a flexible printed cable (FPC) so as to form an electrical signal path out of conductive material when the said substrates are bonded together, comprising:

a FPC contact constructed at an arbitrarily selected point on electrode arrangement defined by said X-axis potential compensating electrodes arranged on said transparent conductive film of said first substrate along outermost edge portions thereof;
and
another FPC contact bonded to said FPC contact on said first substrate and constructed at an arbitrarily selected point on another electrode arrangement defined by said Y-axis potential compensating electrodes arranged on said transparent conductive film of said second substrate along outermost edge portions thereof.

A substrate contact structure for use in a resistive touch panel including a first substrate having a transparent conductive film in which an active area is defined by symmetrically providing X-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, a second substrate bonded together to said first substrate and having a transparent conductive film in which an active area is defined by symmetrically providing Y-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, dot spacers filled between said two substrates so as to ensure electric isolation between said first and second substrates, and contacts concentrated on a flexible printed cable (FPC) so as to form an electrical signal path out of conductive material when said two substrates are bonded together, comprising:

said X-axis potential compensating electrodes arranged along outermost edge portions of said transparent conductive film of said first substrate;
a FPC contact for said first substrate, which is constructed at an arbitrarily selected point on electrode arrangement defined by said X-axis potential compensating electrodes arranged on said transparent conductive film of said first substrate;
said Y-axis potential compensating electrodes arranged along outermost edge portions of said transparent conductive film of said second substrate;
another FPC contact for said second substrate, which is constructed at an arbitrarily selected point on electrode arrangement defined by said Y-axis potential compensating electrodes arranged on said transparent conductive film of said second substrate;
an insulator layer having an arbitrary length formed along said X-axis and said Y-axis potential compensating electrodes around said FPC contacts constructed, respectively, on said potential compensating electrodes of said first and said second substrates;
and
a low resistive metal layer in which said FPC is attached to an upper layer portion of said insulator layer formed on said potential compensating electrodes.

4 more elements

A substrate contact structure for use in a resistive touch panel including a first substrate having a transparent conductive film in which an active area is defined by symmetrically providing Y-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, a second substrate bonded together to said first substrate and having a transparent conductive film in which an active area is defined by symmetrically providing X-axis potential compensating electrodes made of low resistive metal thereon at an arbitrary interval, dot spacers filled between said two substrates so as to ensure electric isolation between said first and second substrates, and contacts concentrated on a flexible printed cable (FPC) so as to form an electrical signal path out of conductive material when the said substrates are bonded together, comprising:

a FPC contact constructed at an arbitrarily selected point on electrode arrangement defined by said Y-axis potential compensating electrodes arranged on said transparent conductive film of said first substrate along outermost edge portions thereof;
and
another FPC contact bonded to said FPC contact on said first substrate and constructed at an arbitrarily selected point on another electrode arrangement defined by said Y-axis potential compensating electrodes arranged on said transparent conductive film of said second substrate along outermost edge portions thereof.

Dependencies are inferred from the claim text.

Contact structure of substrates of touch panel and method of bonding the same

Life of this patent

Contact structure of substrates of touch panel and method of bonding the same

Life of this patent

Abstract

Claims9