FIELD

The present disclosure relates to a display device, and more particularly to a display device for improving productivity.

BACKGROUND

A touchscreen is an input device through which a user may input a command by selecting instructions displayed on a screen of a display device using a hand or an object. That is, the touchscreen converts a contact position that directly contacts a human hand or an object into an electrical signal and receives selected instructions based on the contact position as an input signal. Such a touchscreen may substitute for a separate input device that is connected to a display device and operated, such as a keyboard or a mouse, and thus the range of application of the touchscreen has continually increased.

Accordingly, many attempts are being made to install a touchscreen in a display panel, such as a liquid crystal display panel or an organic light-emitting display panel, in order to improve productivity of display devices or reduce the size thereof.

When a touchscreen is installed in an organic light-emitting display panel, signal lines of the touchscreen are disposed on dams of the organic light-emitting display panel. In this case, however, a residual film of a photoresist for forming the touchscreen is highly likely to be left behind in a deep trench between the dams. If an exposure is increased in order to prevent a residual film of a photoresist for forming the touchscreen from being left behind, productivity is deteriorated.

SUMMARY

Accordingly, the present disclosure is directed to a display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

An object of the present disclosure is to provide a display device for improving productivity.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

To achieve these objects and other advantages and in accordance with the purpose of the disclosure, as embodied and broadly described herein, according to one aspect of the disclosure, a display device comprises a light-emitting element disposed in an active area of a substrate, a touch sensor disposed on the light-emitting element, an encapsulation unit disposed between the light-emitting element and the touch sensor, the encapsulation unit comprising a plurality of inorganic encapsulation layers and at least one organic encapsulation layer disposed between the inorganic encapsulation layers, a touch pad disposed in a pad area of the substrate, the touch pad being connected to the touch sensor via a routing line, and a first dam and a second dam disposed between the active area and the pad area, wherein a total thickness of at least one inorganic insulation layer disposed on a region above each of the first and second dams is different from a total thickness of the at least one inorganic insulation layer disposed in a trench region between the first dam and the second dam, whereby a photoresist for forming a routing line is formed so as to have a uniform thickness on the region above each of the dams and the trench region between the dams, and thus productivity is improved.

According to other aspect of the disclosure, it is to provide a display device comprising a light-emitting element disposed in an active area of a substrate, a touch sensor disposed on the light-emitting element, an encapsulation unit disposed between the light-emitting element and the touch sensor, the encapsulation unit comprising a plurality of inorganic encapsulation layers and at least one organic encapsulation layer disposed between the inorganic encapsulation layers, a touch pad disposed in a pad area of the substrate, the touch pad being connected to the touch sensor via a routing line, a first dam and a second dam disposed between the active area and the pad area, a low-voltage supply line disposed on the substrate and below the first dam and the second dam, and an auxiliary electrode disposed between the low-voltage supply line and the first and second dams and electrically connecting the low-voltage supply line and a cathode of the light-emitting element, wherein the second dam includes a first sub-dam and a second sub-dam, and the auxiliary electrode is partially disposed between the first sub-dam and the second sub-dam.

It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

