Display device including a preventing film formed in the terminal region

1. A display device, including a display region formed of a plurality of pixels, and a terminal region formed on an outer side of the display region, comprising:

a sealing film covering the plurality of pixels;

a terminal wiring formed in the terminal region;

an insulating film which is formed in the terminal region on the terminal wiring; and

a preventing film formed on an entirety of the insulating film in the terminal region, wherein

the insulating film and the preventing film expose the terminal wiring in the terminal region, and

the preventing film directly contacts the sealing film without overlapping the sealing film.

2. The display device according to claim 1 , further comprising, in each of the plurality of pixels, an anode electrode formed on the insulating film and a pixel wiring, wherein

the insulating film is between the anode electrode and the pixel wiring.

3. The display device according to claim 1 , wherein the insulating film is formed of silicon nitride.

4. The display device according to claim 1 , wherein the preventing film is formed of one of silicon oxide and aluminum oxide.

5. The display device according to claim 1 , further comprising:

a self-luminous element film formed in each of the plurality of pixels on an upper layer of an anode electrode; and

a cathode electrode which is formed on an upper layer of the self-luminous element film, and is configured to be applied with a voltage between the anode electrode and the cathode electrode, to thereby cause the self-luminous element film to emit light;

wherein the sealing film is formed on an upper layer of the cathode electrode, and located in an entirety of the display region.

6. The display device according to claim 1 , wherein the preventing film is formed in the terminal region without overlapping the display region.