Lg Display Co., Ltd.

Industry-University Cooperation Foundation Hanyang University

Harkjin Kim

HoYoung Jeong

Bum Sik Kim

Shin-Bok Lee

Kwanghwan Ji

Yong Duck Kim

Hoyoung Jeong

Byong-Deok Choi

June Hee Lee

Dong-Young Kim

Dong Young Kim

An electro-luminescence display apparatus comprises a transparent substrate; a thin-film transistor array disposed on the transparent substrate; a first electrode disposed on the thin-film transistor array; an electro-luminescence diode disposed on the first electrode; a second electrode disposed on the electro-luminescence diode; an encapsulation unit disposed on the second electrode; and an external light-absorbing layer disposed on the encapsulation unit and absorbing external light that passes through the transparent substrate.

Electro-luminescence display apparatus

A display device according to an exemplary embodiment of the present disclosure includes a light emitting diode and a pixel driving circuit which drives the light emitting diode, the pixel driving circuit includes a driving transistor which applies a driving current to the light emitting diode, a first transistor which applies a first reference voltage to a gate electrode of the driving transistor, a second transistor which applies a data voltage to the gate electrode of the driving transistor, a third transistor which applies a second reference voltage to a source electrode of the driving transistor, and a storage capacitor connected to the gate electrode and the source electrode of the driving transistor. According to the present disclosure, the threshold voltage Vth and the mobility of the driving transistors are internally compensated to improve an image quality.

Display device

A display device includes a display panel including a display area on which an image is displayed, a substrate, and an electrode located over the substrate and disposed in the display area; and a camera photographing a front of the display panel without being exposed to the front surface of the display panel, being disposed under the display area of the display panel, and overlapping with a first area in the display area, wherein the electrode overlaps with the first area, and wherein the electrode comprises a semi-transmissive layer positioned over the substrate, an optical path compensation layer positioned on the semi-transmissive layer, and a metal layer positioned on the optical path compensation layer.

Disclosed are a display device and a method for driving a pixel of the display device. The device and method is capable of securing a time to sense a threshold voltage of a driving transistor and of compensating for the threshold voltage during operation of the pixel. Each of a plurality of pixels has a 5T1C structure including first to fourth transistors and a driving transistor. The first to fourth transistors are configured to apply driving signals through first to fourth scan lines, respectively. Thus, even without increasing the number of driving signals applied to each pixel, a long time for sensing a threshold voltage of each pixel can be secured.

Display device and method for driving pixel of the same

Growing community of inventors

Incheon, South Korea

Harkjin Kim