BACKGROUND

Technical Field

The disclosure relates to a display apparatus, and in particular to a touch display device.

Description of Related Art

In order to achieve a slim border effect, circuits extending beyond a touch surface of the existing touch display device are bent to the bottom of the touch display device; however, such design may cause product failure because the bent circuits are subject to tensile stress and may be easily broken.

SUMMARY

The disclosure provides a touch display device to better prevent the bent circuits from being broken.

In an embodiment of the disclosure, a touch display device including a first substrate and a second substrate is provided. The first substrate has a signal wire and a display unit which are electrically connected to each other. The first substrate has a first surface and a second surface opposite to each other. The second substrate has a conductive circuit and a touch unit which are disposed on one side of the second substrate facing the first substrate. The second substrate includes a touch area and a bending area, the touch unit is disposed in the touch area, and the touch area is stacked on the display unit. The conductive circuit is disposed in the bending area and is electrically connected to the signal wire. The bending area extends from an edge of the first substrate and is bent to one side of the first substrate facing away from the second substrate.

According to an embodiment of the disclosure, the second substrate has a driver chip that is located on the one side of the second substrate facing the second surface of the first substrate, and the driver chip is electrically connected to the conductive circuit.

According to an embodiment of the disclosure, an insulation layer is filled between the touch area of the second substrate and the first surface of the first substrate, and a conducting member penetrates the insulation layer and is connected to the conductive circuit and the signal wire.

According to an embodiment of the disclosure, an insulation layer is filled between the touch area of the second substrate and the first surface of the first substrate, and a conducting member extends along an edge of the insulation layer and is connected to the conductive circuit and the signal wire.

According to an embodiment of the disclosure, the first substrate has a chamfer or a rounded corner at a junction of the first surface and the edge of the first substrate.

According to an embodiment of the disclosure, the second substrate further includes an anti-glare structure, a polarizing structure, or an anti-smudge protective film disposed in the touch area.

According to an embodiment of the disclosure, the second substrate further includes a color resist filter layer disposed in the touch area.

According to an embodiment of the disclosure, the conductive circuit includes a single-layer circuit layer.

According to an embodiment of the disclosure, the conductive circuit includes a first circuit layer and a second circuit layer that are located on different planes and electrically connected to each other, and projections of the first circuit layer and the second circuit layer on the second substrate do not overlap.

According to an embodiment of the disclosure, the conductive circuit includes a first circuit layer and a second circuit layer located on different planes and electrically connected to each other, and projections of the first circuit layer and the second circuit layer on the second substrate partially overlap.

Based on the above, in the touch display device provided in one or more embodiments of the disclosure, the signal wire of the display unit on the first substrate and the conductive circuit on the second substrate are electrically connected. Signals of the display unit on the first substrate may be transmitted through the conductive circuit in the bending area of the second substrate, and the first substrate does not require any bent section. In addition, the conductive circuit is disposed on the side of the second substrate facing the first substrate, i.e., located at an inner surface of the bending area, the conductive circuit in the bending area is not subject to tensile stress because the conductive circuit is located on the inside of a stress neutral plane formed during the bending operation. Therefore, the touch display device provided herein may effectively prevent the conductive circuit in the bending region from being broken.

Several exemplary embodiments accompanied with figures are described in detail below to further describe the disclosure in details.

