Lg Display Co., Ltd.

Jin Her

Hoon Jeong

Chul Sang Shin

Chulsang Shin

Seung-Yeon Hwang

An electroluminescent display apparatus includes a plurality of pixels that each include a driving element including a first gate electrode connected to a first gate node, a second gate electrode facing the first gate electrode, a source electrode connected to a source node, and a drain electrode, a light emitting device connected between the source node and an input terminal for a low level driving voltage to emit light during an emission period, and an internal compensation circuit including a first capacitor connected to the first gate node and the source node. The internal compensation circuit samples a threshold voltage of the driving element during a sampling period that precedes the emission period. A sampling reinforcement voltage for increasing a sampling current flowing in the driving element is applied to the second gate electrode of the driving element during the sampling period.

Electroluminescent display apparatus

Embodiments of the disclosure are related to display devices, a planarization layer disposed on a thin film transistor in a display panel is removed to form an opening in the planarization layer, and a top gate electrode is disposed in the opening of the planarization layer, thus a driving performance of the thin film transistor is enhanced while reducing a size of the thin film transistor disposed in the display panel. Furthermore, the top gate electrode is implemented using an electrode layer located on an upper layer of the planarization layer, the thin film transistor including double gate electrodes is implemented easily without an additional process.

Display device

In a gate in panel (GIP) type liquid crystal display (LCD) device in which a gate driver is directly mounted within a thin film transistor array substrate, a column spacer structure of a GIP circuit part has the same diamond structure as a gap spacer structure of an active region, and a dummy color filter pattern is formed at the GIP circuit part to have the same step as the active region where the cap spacers are positioned to thus prevent a cell gap deficiency between the GIP circuit part and the active region. The LCD device includes: an array substrate divided into an active region on which an image displayed and a GIP circuit part on which a gate driver is mounted; a color filter substrate attached to the array substrate in a facing manner; a color filter formed on an inner surface of the color filter substrate of the active region and including red, green and blue sub-color filters; a dummy color filter pattern formed at an inner surface of the color filter substrate of the GIP circuit part to correspond to the red sub-color filters; and a gap spacer formed at the active region to maintain a cell gap between the color filter substrate and the array substrate and a GIP column spacer formed on the dummy color filter pattern of the GIP circuit part.

Growing community of inventors

Gyeonggi-do, South Korea

Jin Her