The present disclosure relates to the technical field of display devices, in particular to an OLED display panel and a manufacturing method thereof The OLED display panel includes a display region and a blind hole region located in the display region disposed on a substrate, wherein the display region includes: a driving circuit arranged on the substrate; a light-emitting layer disposed above the driving circuit; and the blind hole region includes: an opening; traces arranged on the substrate and surrounding the opening; and a light-shielding layer disposed above the traces, wherein the traces and a part of the driving circuit are located on a film layer, and the light-shielding layer and another part of the driving circuit are located on another film layer.

A display panel and a method of manufacturing the display panel are provided. The display panel includes: a substrate including a transmission area, a display area surrounding the transmission area, and an intermediate area between the transmission area and the display area; a light emitting device; and a groove in the intermediate area and including a first opening of a metal layer including a first sublayer, a second sublayer, and a third sublayer sequentially stacked and a second opening of an inorganic layer covering the metal layer, wherein the first opening includes a first opening of the first sublayer, a second opening of the second sublayer, and a third opening of the third sublayer, which overlap each other, and an inner surface of the second sublayer includes a concave portion recessed in a direction farther away from a center of the first opening than an inner surface of the first sublayer and an inner surface of the third sublayer.

A pixel having an organic light emitting diode (OLED) and method for fabricating the pixel is provided. A planarization dielectric layer is provided between a thin-film transistor (TFT) based backplane and OLED layers. A through via between the TFT backplane and the OLED layers forms a sidewall angle of less than 90 degrees to the TFT backplane. The via area and edges of an OLED bottom electrode pattern may be covered with a dielectric cap.

The chuck for supporting a target substrate for a display device, the chuck includes: a base having a first surface to support an object and a second surface opposite the first surface, the first surface including a first area and a second area; and indentations formed in the second area and recessed from the first area in a thickness direction of the base. The indentations include a first indentation extending in a first direction and a second indentation extending in a second direction intersecting the first direction.

A display device includes a display area, a test pad, a plurality of first test transistors, and at least one outline. The display area includes pixels coupled to data lines and scan lines. The test pad receives a test signal. The first test transistors are coupled between the data lines of the display area and the test pad. The at least one outline is coupled between one of the first test transistors and the test pad. The at least one outline is located in a non-display area outside the display area.

An organic electroluminescence device is disclosed which includes: a substrate; a thin film transistor formed on the substrate; a first electrode formed on the substrate provided with the thin film transistor; an organic light emission layer and a second electrode sequentially formed on the first electrode; and a first light absorption layer formed over the thin film transistor and configured to shield light emitted from the organic light emission layer. As such, the organic electroluminescence device employing the oxide thin film transistor can secure reliability against light.

According to one embodiment, an organic semiconductor device includes a supporting substrate, a plurality of organic EL light emitting elements, a first barrier layer, a flattening layer, and a second barrier layer. The flattening layer exists sporadically and makes gentle in inclination steep elevation change present in the surface of the first barrier layer. The first barrier layer and the second barrier layer are made of moisture penetration preventive material.

An organic EL device including: a substrate; a bank layer having therewithin an opening having an elongated shape in plan view; and a functional layer including an organic material, disposed within the opening, and having an elongated shape in plan view. The bank layer includes first banks opposing each other with the functional layer therebetween in an transverse direction of the functional layer and extending along a longitudinal direction of the functional layer and second banks opposing each other with the functional layer therebetween in the longitudinal direction of the functional layer and extending along the transverse direction of the functional layer. An angle θ2 between an inclined surface of a second bank and an upper surface of the substrate is greater than an angle θ1 between an inclined surface of a first bank and the upper surface of the substrate.

The present invention provides an OLED array substrate, a manufacturing method thereof, an OLED display panel and an OLED display device. The OLED array substrate comprises a substrate and a plurality of pixel units provided thereon, each pixel unit comprising a TFT, and a first electrode, an organic light-emitting layer, a second electrode and an optical coupling layer sequentially arranged on the TFT, wherein the optical coupling layer comprises a bottom contacting with the second electrode and an arched top protruding towards a light-exiting direction. By forming the optical coupling layer of each pixel unit on the OLED array substrate to be the arched top optical coupling layer, the OLED array substrate, the manufacturing method thereof, the OLED display panel and the OLED display device of the present invention attenuates total reflection of light inside the optical coupling layer, thereby improving light extraction efficiency.

A display panel may include a first substrate, a first line disposed on the first substrate, a second substrate disposed on the first line, including a first portion which overlaps the first substrate and a second portion which does not overlap the first substrate, and having a through-hole which exposes the first line, a second line disposed on the second substrate and electrically connected to the first line through the through-hole, a display unit disposed on the second substrate and electrically connected to the second line, and a printed circuit board disposed on a surface of the first substrate which faces the second substrate and electrically connected to the first line.