A display substrate has a display area and a peripheral area. The display substrate includes a base substrate; an insulating layer on the base substrate and in at least the peripheral area; a plurality of light emitting elements on the base substrate and in the display area; an encapsulating layer on a side of the plurality of light emitting elements distal to the base substrate to encapsulate the plurality of light emitting elements; and a dam layer on a side of the insulating layer distal to the base substrate. The encapsulating layer includes a first inorganic encapsulating sublayer extending from the display area into the peripheral area. The display substrate has a groove extending into the first insulating layer in the peripheral area, and substantially surrounding the display area. The first inorganic encapsulating sublayer extends into at least a portion of the groove.

An electronic device includes a substrate, a first light-emitting unit, a first light conversion unit, and a first buffer layer. The first light-emitting unit is disposed on the substrate. The first light conversion unit is disposed on the first light-emitting unit. The first buffer layer is disposed between the first light conversion unit and the first light-emitting unit. The thickness of the first light conversion unit is greater than the thickness of the first light-emitting unit.

An electronic device includes a substrate, a first light-emitting unit, a first light conversion unit, and a first buffer layer. The first light-emitting unit is disposed on the substrate. The first light conversion unit is disposed on the first light-emitting unit. The first buffer layer is disposed between the first light conversion unit and the first light-emitting unit. The thickness of the first light conversion unit is greater than the thickness of the first light-emitting unit.

An organic light emitting display panel and an organic light emitting display device including the panel are discussed. The organic light emitting display device can include a planarization layer disposed on a substrate, a first electrode disposed on a portion of an upper surface of the planarization layer, a protective pattern surrounding a portion of an upper surface and a side surface of the first electrode, a bank disposed to expose the portion of the upper surface of the first electrode and to be in contact with the portion of the upper surface of the planarization layer while surrounding the protective pattern, a light emitting layer disposed on the bank and disposed on the upper surface of the first electrode that does not overlap the bank, and a second electrode disposed on the light emitting layer. The display device is capable of preventing the first electrode from being contaminated by foreign substances.

A light emitting display device can be configured so that a ramp and a bumpy pattern are provided in a first direction in which a horizontal distance between subpixels is small. As a result, the physical distance between anodes of adjacent subpixels can be increased, a normal separation between the anodes of adjacent subpixels is possible, and a mixture of colors between the adjacent subpixels depending on a viewing angle can be prevented.

An organic light emitting display panel including a substrate including a plurality of subpixel regions; a first electrode disposed on the substrate in each subpixel region; a first bank layer disposed in a boundary portion of each subpixel region and covering an edge of the first electrode, the first bank layer including micropatterns at an upper surface thereof, a first printed organic material layer disposed on the first electrode and a side surface of the first bank layer; a second deposited organic material layer disposed on the first organic material layer and the first bank layer; a second bank layer disposed at the upper surface of the first bank layer; a third printed organic material layer disposed on the side surface of the first bank layer and the second organic material layer; a fourth deposited organic material layer disposed on the third organic material layer and the second bank layer; and a second electrode disposed on the fourth organic material layer.

A display panel and a method of manufacturing thereof are provided. A hole injection layer, a hole transport layer, a light emitting layer, and a planarization layer are formed by an inkjet-printing method. Specifically, solvents including hole injecting layer material, hole transporting layer material, light emitting layer material, and planarization layer material are evaporated by vacuum drying so as to uniformize the surface of the entire layer, thereby improving light uniformity. Moreover, a notch of the light emitting layer can be effectively filled by disposing a planarization layer on the light emitting layer, so a uniform layer can be formed, which can reduce the current accumulated at the notch. Therefore, the light uniformity of the display panel is improved, and the risk of leakage current at the notch is also reduced.

The present invention provides an organic light-emitting diode (OLED) device and a manufacturing of the OLED device. The OLED device includes a light-emitting layer, an insulating layer, an electron transport layer, and an electron injection layer. The insulating layer is arranged on one side of the light-emitting layer, and a through hole is in the insulating layer. The through hole is arranged corresponding to a middle portion of the light-emitting layer. The electron transport layer is in a lower portion of the through hole and attached to a surface of the light-emitting layer. The electron injection layer is in an upper portion of the through hole and attached to one side of the electron transport layer away from the light-emitting layer.

Provided are a display panel and a manufacturing method therefor, and a display device. The display panel includes: a substrate, a pixel defining layer located on the substrate, and a cathode isolation structure located on the pixel defining layer. The cathode isolation structure includes at least a first isolation sub-layer and a second isolation sub-layer located between the pixel defining layer and the first isolation sub-layer, the cross section of the second isolation sub-layer is smaller than that of the first isolation sub-layer, and an orthographic projection, on the substrate, of the second isolation sub-layer falls within an orthographic projection range, on the substrate, of the first isolation sub-layer.

The present disclosure relates to a light emitting display device including: a substrate; an anode positioned on the substrate; a black pixel defining layer, wherein an opening overlapping an anode is defined in the black pixel defining layer; an emission layer positioned in the opening of the black pixel defining layer; a spacer positioned on the black pixel defining layer and having a step; and a cathode formed on the emission layer, the black pixel defining layer, and the spacer, wherein the spacer has a first portion and a second portion having a lower height than the first portion and integrally formed with the first portion, and the end portion of the second portion is positioned closer to the opening than the end portion of the first portion.