Lg Display Co., Ltd.

Hyoung-Su Kim

Jonghyeok Im

Gyungmin Kim

Euitae Kim

Namwook Cho

Doohyun Yoon

Hoiyong Kwon

TaeHwan Kim

JaeMyon Lee

BuYeol Lee

MiReum Lee

HyeSeon Eom

DongYoon Kim

Kiseob Shin

Sul Lee

Seung Chan Byun

KiSeob Shin

Bu-Yeol Lee

Yongmin Jeong

Jin-Hyun Jung

Bu Yeol Lee

MoonSoo Kim

Hye-Seon Eom

Jong-Hyeok Im

Gyung-Min Kim

Doo-Hyun Yoon

Buyeol Lee

A display device may reduce or minimize a size of a light emission area that becomes a dark spot due to particles. The display device includes a substrate provided with a display area for displaying an image by subpixels, first electrodes provided in each of the subpixels over the substrate, driving transistors provided between the substrate and the first electrodes and coupled to each of the first electrodes, a light emitting layer provided over the first electrodes, and a second electrode provided over the light emitting layer. Each of the first electrodes includes divided electrodes spaced apart from each other, a transistor contact portion coupled with the driving transistor through a contact hole, and connection electrodes coupling each of the plurality of divided electrodes with the transistor contact portion.

Display device with subpixels having divided electrodes

Disclosed is a display apparatus capable of reducing a voltage drop of a common electrode and improving a transmittance. The display apparatus comprises a substrate including a display area having a first area and a second area, a first electrode disposed on the substrate and configured to cover the first area and the second area, a first common power line disposed between the substrate and the first electrode and connected to the first electrode provided in the first area, and a second common power line connected to the first electrode provided in the second area through the first area.

Display apparatus comprising a first common power line and a second common power line connected with a first electrode

An organic light emitting display apparatus includes an organic light emitting display panel including a display area having a transparent area and an opaque area, and a non-display area. A gate driver is configured to sequentially supply a gate pulse to a plurality of gate lines included in the organic light emitting display panel. An initialization circuit is configured to transfer gate pulses or initialization control signals, output from the gate driver, to a plurality of transparent area gate lines. A camera is configured to photograph a region in a forward direction with respect to the organic light emitting display panel, and the camera may be provided in the transparent area of a rear surface of the organic light emitting display panel. A first pixel driving circuit provided in the transparent area may differ from a second pixel driving circuit provided in the opaque area.

Organic light emitting display apparatus

A display device includes a substrate provided with a plurality of pixels, a circuit element layer provided on the substrate and provided with an auxiliary electrode, an insulating layer provided on the circuit element layer and provided with a plurality of connection electrodes spaced apart from one another and a first trench, a fence structure provided on the plurality of connection electrodes, an organic light emitting layer provided on the fence structure, and a second electrode arranged on the organic light emitting layer, wherein the plurality of connection electrodes are electrically connected with the auxiliary electrode, at least one of the plurality of connection electrodes is exposed from the first trench, and the second electrode is in contact with a connection electrode exposed from the first trench. Therefore, a luminance difference between an outer portion of a panel and a center portion of the panel may be reduced.

Display device with auxiliary electrode in trench

The present disclosure discloses an organic light emitting display device. The organic light emitting display device includes a substrate, a driving transistor, a reflection electrode, a dielectric layer, a first and second electrode, and an organic light emitting layer. The driving transistor is in each of a plurality of pixel regions which are defined on the substrate. The reflection electrode is on the driving transistor, and is electrically connected to a gate electrode of the driving transistor. The dielectric layer is on the reflection electrode. The first electrode is on the dielectric layer, and is electrically connected to a source electrode of the driving transistor, and faces the reflection electrode. The organic light emitting layer is on the first electrode. The second electrode is on the organic light emitting layer.

Organic light emitting display device including reflection electrode and first electrode with dielectric layer therebetween

An organic light emitting display apparatus includes an organic light emitting display panel including a display area, including a transparent area and an opaque area, and a non-display area, a gate driver sequentially supplying a gate pulse to a plurality of gate lines included in the organic light emitting display panel, and an initialization unit transferring gate pulses and/or initialization control signals, output from the gate driver, to a plurality of transparent area gate lines. A camera photographing a region in a forward direction with respect to the organic light emitting display panel is provided in the transparent area of a rear surface of the organic light emitting display panel. A first pixel driving circuit provided in the transparent area includes two transistors, and a second pixel driving circuit provided in the opaque area includes at least three transistors.

A display device can include a first sub pixel disposed on a substrate; a second sub pixel disposed on the substrate, the second sub pixel being adjacent to the first sub pixel; a first electrode disposed in each of the first and second sub pixels; a first capacitor disposed on the first electrode in each of the first and second sub pixels, the first capacitor being located at a periphery of the corresponding first electrode; an emission layer disposed on the first electrode in each of the first and second sub pixels; and a second electrode disposed on the emission layer in each of the first and second sub pixels.

Light emitting display device

A pixel is provided that has an internal compensation circuit capable of compensating for a threshold voltage of a driving transistor without loss of a data voltage and a light emitting display apparatus including the same. The pixel includes a light emitting device and a pixel circuit connected to the light emitting device. The pixel circuit includes a driving transistor including first and second gate electrodes, a source electrode, and a drain electrode, a first capacitor formed between the first gate electrode and the source electrode of the driving transistor, a second capacitor formed between the second gate electrode and the source electrode of the driving transistor, and a switching circuit connected to the first and second gate electrodes, the source electrode, and the drain electrode of the driving transistor and operating in order of a first to a fourth period.

Pixel and light emitting display apparatus comprising the same

Disclosed are a display device and a method of manufacturing the same. The display device includes a light emitting device including an anode electrode, a light emitting layer, and a cathode electrode, a driving transistor configured to supply a driving current to the light emitting device, and a capacitor including one electrode and other electrode each formed of a transparent conductive material. The one electrode and the other electrode of the capacitor overlap each other with at least one insulation layer therebetween.

Transparent display device and method for manufacturing the same

Various embodiments relate to an EM signal control circuit, an EM signal control method, and an organic light emitting display device. The EM signal control circuit according to an embodiment of the present invention includes additional elements (e.g., a transistor and a capacitor) configured to separate a set signal from a gate electrode of a transistor coupled to an output node and to stably keep turn-off of a transistor coupled to the output node. Voltage levels of a first emission power source and a first gate power source may be set differently from each other according to the present invention. Therefore, despite of a threshold voltage change of a transistor coupled to an output node, the transistor may remain turned off stably, thereby improving the reliability of the EM signal.

EM signal control circuit, EM signal control method and organic light emitting display device

The present embodiments relate to a transparent display panel having an excellent transparency, light-emitting efficiency, and viewing angle, and a transparent display device including the same.

Transparent display device and transparent display panel

Disclosed is a transparent display device that includes a plurality of column lines and a plurality of horizontal lines crossing each other to define a plurality of pixel regions in a matrix, each column line including at least two data lines and a voltage line, and each horizontal line including a gate line; a first transparent electrode in each emission region; a transparent organic light emitting layer on the first electrode; and a second transparent electrode on the organic light emitting layer, wherein each pixel region includes a transmissive region and a circuit region, and wherein the transmissive region includes at least two emission regions that are divided by a first transparent bank pattern.

Transparent display device

There is provided a TFT backplane having at least one TFT with oxide active layer and at least one TFT with poly-silicon active layer. In the embodiments of the present disclosure, at least one of the TFTs implementing the circuit of pixels in the active area is an oxide TFT (i.e., TFT with oxide semiconductor) while at least one of the TFTs implementing the driving circuit next to the active area is a LTPS TFT (i.e., TFT with poly-Si semiconductor).

Growing community of inventors

Anyang-si, South Korea

Hyoung-Su Kim