This application claims priority to Korean Patent Application No. 10-2018-0119747, filed on Oct. 8, 2018, and all the benefits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference.

BACKGROUND

1. Field

Exemplary embodiments relate to a display apparatus, and more particularly, to a display apparatus including a double-gate transistor.

2. Description of the Related Art

Display apparatuses such as organic light-emitting display apparatuses, liquid crystal display apparatuses, or the like include an array substrate including a thin-film transistor (“TFT”), a capacitor, and a plurality of wirings. An array substrate includes fine patterns such as the TFT, the capacitor, and the plurality of wirings, and a display apparatus is operated via complex connection between the TFT, the capacitor, and the plurality of wirings.

Recently, as a demand for compact display apparatuses having a high resolution has been increasing, a demand for efficient spatial arrangements, connection structures, and driving methods of TFTs, capacitors, and wirings included in display apparatuses, and for an improvement in image quality realized by such display apparatuses has been also increasing.

SUMMARY

Exemplary embodiments include a display apparatus, in which characteristics of transistors may be improved and a capacitor's capacity may be ensured.

Additional exemplary embodiments will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments.

In an exemplary embodiment, a display apparatus includes a first transistor including a semiconductor layer, a first electrode and a second electrode, the first electrode and the second electrode respectively electrically connected to a source area and a drain area of the semiconductor layer, and a first gate electrode and a second gate electrode corresponding to a channel area of the semiconductor layer and facing each other, and a capacitor including a first capacitor electrode, a second capacitor electrode above the first capacitor electrode, and a third capacitor electrode below the first capacitor electrode, where the first gate electrode of the first transistor is electrically connected to one of the first electrode and the second electrode of the first transistor, and the one of the first electrode and the second electrode of the first transistor is electrically connected to the third capacitor electrode.

In an exemplary embodiment, the second capacitor electrode and the third capacitor electrode of the capacitor may be electrically connected to each other.

In an exemplary embodiment, the one of the first electrode and the second electrode of the first transistor and the second capacitor electrode of the capacitor may be electrically connected to a pixel electrode.

In an exemplary embodiment, the display apparatus may further include a connection electrode electrically connected to the one of the first electrode and the second electrode of the first transistor and to the second capacitor electrode of the capacitor, where the pixel electrode is electrically connected to the connection electrode.

In an exemplary embodiment, the first gate electrode of the first transistor may extend from the third capacitor electrode of the capacitor.

In an exemplary embodiment, the second gate electrode of the first transistor may extend from the first capacitor electrode of the capacitor.

In an exemplary embodiment, the one of the first electrode and the second electrode of the first transistor may extend from the second capacitor electrode of the capacitor.

In an exemplary embodiment, the first gate electrode of the first transistor and the third capacitor electrode of the capacitor may be disposed in a same layer, and the second gate electrode of the first transistor and the first capacitor electrode of the capacitor may be disposed in a same layer, and the first electrode and the second electrode of the first transistor and the second capacitor electrode of the capacitor may be disposed in a same layer.

In an exemplary embodiment, the display apparatus may further include a second transistor connected between the second gate electrode of the first transistor and a data line.

In an exemplary embodiment, the display apparatus may further include a third transistor connected between the one of the first electrode and the second electrode of the first transistor and a sensing line.

In an exemplary embodiment, the display apparatus may further include a light-emitting device connected to the first transistor, where the light-emitting device includes a pixel electrode connected to the one of the first electrode and the second electrode of the first transistor, an opposite electrode facing the pixel electrode, and an emissive layer between the pixel electrode and the opposite electrode.

In an exemplary embodiment, the display apparatus may further include a power line electrically connected to the opposite electrode and disposed adjacent to the first transistor.

In an exemplary embodiment, a display apparatus includes a first power line, a second power line, and a pixel including a first transistor and a capacitor that are electrically connected to the first power line, and a light-emitting device electrically connected to the second power line, where the first transistor includes a semiconductor layer, a first electrode and a second electrode respectively electrically connected to a source area and a drain area of the semiconductor layer, and a first gate electrode and a second gate electrode corresponding to a channel area of the semiconductor layer and facing each other, where the first gate electrode of the first transistor is electrically connected to one of the first electrode and the second electrode of the first transistor, where the first power line includes a 1-1 power line extending in a first direction and a 1-2 power line extending in a second direction different from the first direction and electrically connected to the 1-1 power line, where the second power line includes a 2-1 power line extending in the first direction and a 2-2 power line extending in the second direction and electrically connected to the 2-1 power line.

In an exemplary embodiment, one of the 1-2 power line of the first power line and the 2-2 power line of the second power line may be disposed in each of a plurality of rows, where the 1-2 power line and the 2-2 power line are alternately disposed in the first direction.

In an exemplary embodiment, the capacitor may include a first capacitor electrode, a second capacitor electrode above the first capacitor electrode, and a third capacitor electrode below the first capacitor electrode, and the one of the first electrode and the second electrode of the first transistor may be electrically connected to the third capacitor electrode.

In an exemplary embodiment, the 1-2 power line of the first power line and the 2-2 power line of the second power line may be disposed in each of a plurality of rows.

In an exemplary embodiment, the second capacitor electrode and the third capacitor electrode of the capacitor may be electrically connected to each other.

In an exemplary embodiment, the light-emitting device may include a pixel electrode connected to the one of the first electrode and the second electrode of the first transistor, an opposite electrode facing the pixel electrode, and an emissive layer between the pixel electrode and the opposite electrode, where the second power line is electrically connected to the opposite electrode.

In an exemplary embodiment, the one of the first electrode and the second electrode of the first transistor and the second capacitor electrode of the capacitor may be electrically connected to the pixel electrode.

In an exemplary embodiment, the display apparatus may further include a connection electrode electrically connected to the one of the first electrode and the second electrode of the first transistor and to the second capacitor electrode of the capacitor, where the pixel electrode is electrically connected to the connection electrode.

