Samsung Display Co., Ltd.

Dongwoo Fine-Chem Co., Ltd.

Jeehoon Kim

Shinhyuk Yang

Jongmoo Huh

Kyumin Kim

Donghan Kang

Yujin Kim

Beomsoo Kim

Youngjin Yoon

Hyeonsu Cho

Eunwon Lee

Doohyun Kim

Young Jun Shin

Sunghwan Won

Kwangsoo Lee

Byoungki Kim

Jaehwan Oh

Sehun Park

Huiwon Yang

Wonkyu Lee

Inyoung Jung

Guanghai Kim

Songhee Kim

Soonwook Hong

Jihun Park

Hui-won Yang

Yu-jin Kim

Hanhee Yoon

A display device including a display area, a peripheral area adjacent to the display area, light-emitting diodes disposed in the display area, transistors electrically connected to the light-emitting diodes, and a pad section including a pad electrode having a multi-layered structure, the pad electrode being disposed in the peripheral area. The pad electrode includes a main metal layer, a first conductive layer on an upper surface of the main metal layer, the first conductive layer including a conductive oxide, and an auxiliary layer on a lower surface of the main metal layer.

Display device

An etchant including: persulfate; a fluorine-containing compound; a chlorine-containing compound; a cyclic amine compound; an inorganic acid; a first compound; and water, wherein the first compound is a compound containing: a sulfonic group, a sulfonic acid group, or a combination thereof; and an amine group, and an interfacial permeation inhibition index (Y) of the etchant is a value of at least about 0.10 and not more than about 0.35, the interfacial permeation inhibition index (Y) being a value calculated by Equation 1. The description of Equation 1 is as in the specification.

Etchant

An etchant including: persulfate; a fluorine-containing compound; a chlorine-containing compound; a cyclic amine compound; an inorganic acid; sulfate; and water, wherein a tip control index (Y) of the etchant is a value of at least about 45.0 and not more than about 70.0, the tip control index (Y) being a value calculated by Equation 1:=1.0×10(1)+1.0×10(2)+5.0×10(3)+1.5×(1)×(2)+2.0×10(1)×(3)+2.0×10(2)×(3)  Equation 1The description of Equation 1 is as in the specification.

A display device includes: an array of pixels disposed on a display area; a connection pad disposed on a pad area; a transmission line electrically coupled with the connection pad; and a conductive dummy pattern disposed under the transmission line. A part of the conductive dummy pattern overlaps the transmission line in a plan view. The transmission line transmits a driving signal or a power signal to the array of pixels. The connection pad includes a pad conductive layer electrically coupled with the transmission line, and a passivation layer disposed on the pad conductive layer. The passivation layer covers at least a side surface of the pad conductive layer and defines an opening overlapping the conductive dummy pattern and the transmission line in the plan view.

Display device and method for repairing display device

A display apparatus includes: a substrate including a display area, and a peripheral area; and a pad unit at the peripheral area, the pad unit including: a first conductive layer; a second conductive layer on the first conductive layer, and having a first opening; a third conductive layer on the second conductive layer, and having a second opening overlapping with the first opening, the second opening having an area less than an area of the first opening at a top surface of the second conductive layer; an organic protective layer filling the first opening, and having a third opening overlapping with the second opening; and an additional metal layer covering a top surface of the first conductive layer exposed through the first opening, an inner surface of the second opening, an inner surface of the third opening, and a portion of a top surface of the third conductive layer.

Display apparatus including pad unit having plurality of conductive layers with multiple openings

A display device includes a driving element disposed in a display area, an emission element disposed in the display area and electrically connected to the driving element, and a connection pad disposed in a pad area adjacent to the display area and electrically connected to the driving element. The connection pad includes a first pad conductive layer including a metal and a second pad conductive layer including indium tin zinc oxide (ITZO). The indium tin zinc oxide of the second pad conductive layer includes about 20 at % to about 35 at % of indium (In), about 2 at % to about 20 at % of zinc (Zn), about 4 at % to about 6 at % of tin (Sn), and a remainder of oxygen (O).

A display apparatus includes a display area including pixels on a substrate, a pad portion on the substrate in a non-display area outside the display area, and including a conductive line, a first dummy line around the conductive line, and a first anti-fuse and a second anti-fuse adjacent to the conductive line and spaced apart from each other in a lengthwise direction of the conductive line, the first anti-fuse and the second anti-fuse each including a first electrode electrically connected to a portion of the conductive line, and a second electrode over the first electrode with a first insulating layer therebetween, and electrically connected to a portion of the first dummy line, and a circuit portion overlapping, and electrically connected to, the pad portion.

Display apparatus

A display device includes a substrate including a display area and a peripheral area outside the display area, a thin-film transistor arranged in the display area, a display element arranged in the display area, an interlayer insulating layer covering the thin-film transistor, a conductive layer arranged above the interlayer insulating layer, a first insulating layer covering the conductive layer, a pad arranged in the peripheral area, and a second conductive layer covering a central portion of the pad. The pad is connected to a connection line through a contact hole, and the connection line is arranged on a same first layer as a gate electrode of the thin-film transistor. A side surface of the pad is covered by the first insulating layer or the second conductive layer.

Display device including pad arranged in peripheral area

A thin film transistor includes a substrate and a gate electrode disposed over the substrate. The gate electrode includes a center part and a peripheral part configured to at least partially surround the center part. The thin film transistor further includes a gate insulating layer disposed below the gate electrode and a first electrode insulated from the gate electrode by the gate insulating layer. The first electrode has at least a portion thereof overlapping the center part. The thin film transistor additionally includes a spacer disposed below the first electrode and a second electrode insulated from the first electrode by the spacer. The second electrode has at least a portion thereof overlapping the peripheral part. The thin film transistor further includes a semiconductor layer connected to the first and second electrodes, and insulated from the gate electrode by the gate insulating layer.

Thin film transistor including a vertical channel and display apparatus using the same

A thin film transistor includes a semiconductor pattern on a base substrate, the semiconductor pattern including an input area, an output area, and a channel area between the input area and the output area, a first insulating layer covering the semiconductor pattern, a control electrode on the first insulating layer, the control electrode overlapping the channel area, a second insulating layer covering the control electrode, an input electrode connected to the input area, an output electrode connected to the output area, and a heat discharge electrode on the second insulating layer, the heat discharge electrode being connected to the control electrode.

Growing community of inventors

Yongin-si, South Korea

Jeehoon Kim