Abstract: A substrate and a preparation method thereof, a display panel and a preparation method thereof, and a display device are provided. The substrate includes a display region and a peripheral region positioned in a periphery of the display region and used for sealing, the substrate includes: a base substrate; an insulating layer, arranged on a side of the base substrate and positioned in the display region and the peripheral region for sealing; and a plurality of pixel units, positioned on the insulating layer corresponding to the display region, and in the peripheral region, at least one groove is disposed on a side of the insulating layer which faces away from the base substrate, a side of the groove which is away from the base substrate is open, and a depth direction of the groove is perpendicular to the base substrate.

Abstract: A pixel defining structure includes a first sub-pixel defining structure surrounding a first sub-pixel region configured to form a first sub-pixel having a first color. The first sub-pixel defining structure includes a lyophilic portion one the bottom side of the first sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The pixel defining structure includes a second sub-pixel defining structure surrounding a second sub-pixel region configured to form a second sub-pixel having a second color. The second sub-pixel defining structure includes a lyophilic portion one the bottom side of the second sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The second color is different from the first color. Thicknesses of the lyophilic portion of the first sub-pixel defining structure and the lyophilic portion of the second sub-pixel defining structure are different.

Abstract: Provided is an array substrate, comprising a plurality of opening regions. The array substrate further comprises a substrate and at least one functional layer stacked on one side of the substrate. The functional layer comprises a plurality of functional patterns and at least one supplementary pattern, the plurality of functional patterns are configured to transmit electrical signals, and there is a gas region between the plurality of functional patterns; the at least one supplementary pattern is at least provided in at least one opening region, and the supplementary pattern is located in the gap region between the plurality of functional patterns. The plurality of functional patterns and the at least one supplementary pattern are spaced apart, and the plurality of functional patterns and the at least one supplementary pattern are arranged at substantially equal intervals.

Abstract: A pixel defining layer, a manufacturing method therefor, and a display panel are provided. The pixel defining layer comprises a first sub-defining layer, a light absorbing layer, and a second sub-defining layer sequentially stacked on a substrate. The light absorbing layer is used for absorbing light for exposing the first sub-defining layer. An orthographic projection of the light absorbing layer on the substrate covers the outer edge of an orthographic projection of the first sub-defining layer on the substrate away from the surface of the substrate.

Abstract: Embodiments of the present application disclose a display panel. The display panel comprises an array substrate and a light-emitting structure; the array substrate comprises a light conversion layer, and the light conversion layer is configured to convert other light into red light; the light-emitting structure is disposed on the array substrate, and the light-emitting structure emits white light.

Abstract: A pixel defining layer, a manufacturing method therefor, and a display panel are provided. The pixel defining layer comprises a first sub-defining layer, a light absorbing layer, and a second sub-defining layer sequentially stacked on a substrate. The light absorbing layer is used for absorbing light for exposing the first sub-defining layer. An orthographic projection of the light absorbing layer on the substrate covers the outer edge of an orthographic projection of the first sub-defining layer on the substrate away from the surface of the substrate.

Abstract: A display substrate having a display area is provided. The display substrate includes a base and a plurality of light-emitting devices disposed on the base and located in the display area. Each light-emitting device includes a light-emitting portion. In at least one light-emitting device, the light-emitting portion is manufactured using an ink-jet printing process. Distances from a plurality of selected points on an edge of an orthographic projection of the light-emitting portion manufactured using the ink-jet printing process on the base to a center of the orthographic projection are equal. Using the center of the orthographic projection as a center of a circle and a distance from a selected point in the plurality of selected points to the center of the orthographic projection as a radius, the plurality of selected points are distributed on the circle at equal intervals.

Abstract: Embodiments of the present application disclose a display panel and a preparation method therefor, the display panel comprising a first light-emitting unit, a first transparent conductive layer and a second light-emitting unit. The material of the first transparent conductive layer is a n-type semiconductor material; the first transparent conductive layer is disposed on the first light-emitting unit; the second light-emitting unit comprises a first hole injection layer; and the first hole injection layer is disposed on a side of the first transparent conductive layer distant from the first light-emitting unit.

Abstract: Disclosed in embodiments of the present application is a display panel. The display panel comprises a light-emitting structure. The light-emitting structure comprises a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit that are sequentially stacked, and are independently selected from a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit, respectively. A light conversion layer of the light-emitting structure is provided on the side of the green light-emitting unit and/or blue light-emitting unit close to a light exit surface of the light-emitting structure, and the light conversion layer is doped with red photoluminescent particles.

Abstract: Disclosed are a display device and a pixel lighting control method therefor. The display device comprises a plurality of pixels arranged in an array, each pixel comprises a red light sub-pixel, a green light sub-pixel, a first blue light sub-pixel and a second blue light sub-pixel arranged in an array. The display device further comprises: a starting module configured to start the first blue light sub-pixel to emit light when a target blue light brightness value is greater than a preset blue light brightness value, and start the second blue light sub-pixel to emit light when the target blue light brightness value is lower than the preset blue light brightness value. In this way, by selecting blue light quantum dot devices with different characteristics, both high luminous efficiency and long lifetime of the device can be realized without affecting the display effect of the full-color display device.

Abstract: Disclosed are display device and preparation method therefor. Display device includes red light sub pixel, green light sub pixel, and first blue light sub pixel. Red light sub pixel includes anode, hole functional layer, red quantum dot light-emitting layer, transition layer, electron transport layer, and cathode arranged sequentially in layers. Green light sub pixel includes anode, hole functional layer, green quantum dot light-emitting layer, transition layer, electron transport layer, and cathode arranged sequentially in layers. First blue light sub pixel includes anode, hole functional layer, blue light organic light-emitting material layer, transition layer, electron transport layer, and cathode arranged sequentially in layers. Material of transition layer includes aromatic compound with conjugate plane, material of electron transport layer includes metal oxide.

Abstract: There is provided an organic light-emitting diode including: a pixel defining layer on a substrate and having a plurality of openings for defining pixel regions, wherein each pixel region is a region including one pixel therein; a plurality of first pixel electrodes on the substrate and in the plurality of openings, respectively, each first pixel electrode being at a peripheral portion of a corresponding opening adjacent to the pixel defining layer; and a plurality of second pixel electrodes on the substrate and in the plurality of openings, respectively, each second pixel electrode being at a central portion of the corresponding opening. Each first pixel electrode is between the pixel defining layer and a corresponding second pixel electrode, and the plurality of first pixel electrodes and the plurality of second pixel electrodes are in a same layer. Each first pixel electrode includes a shape memory alloy material.

Abstract: A pixel defining structure includes a first sub-pixel defining structure surrounding a first sub-pixel region configured to form a first sub-pixel having a first color. The first sub-pixel defining structure includes a lyophilic portion one the bottom side of the first sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The pixel defining structure includes a second sub-pixel defining structure surrounding a second sub-pixel region configured to form a second sub-pixel having a second color. The second sub-pixel defining structure includes a lyophilic portion one the bottom side of the second sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The second color is different from the first color. Thicknesses of the lyophilic portion of the first sub-pixel defining structure and the lyophilic portion of the second sub-pixel defining structure are different.

Abstract: A substrate and a preparation method thereof, a display panel and a preparation method thereof, and a display device are provided. The substrate includes a display region and a peripheral region positioned in a periphery of the display region and used for sealing, the substrate includes: a base substrate; an insulating layer, arranged on a side of the base substrate and positioned in the display region and the peripheral region for sealing; and a plurality of pixel units, positioned on the insulating layer corresponding to the display region, and in the peripheral region, at least one groove is disposed on a side of the insulating layer which faces away from the base substrate, a side of the groove which is away from the base substrate is open, and a depth direction of the groove is perpendicular to the base substrate.

Abstract: An electroluminescent device and a display device are disclosed. The electroluminescent device includes a hole inject layer, a hole transport layer, an electroluminescent layer, an electron transport layer, and an electron inject layer. At least one of the hole inject layer, the hole transport layer, the electron transport layer, and the electron inject layer is a target film including a small molecular layer and a large molecular layer which are arranged in a stacked manner, and the small molecular layer has a thickness larger than that of the large molecular layer.

Abstract: A pixel defining structure includes a first sub-pixel defining structure surrounding a first sub-pixel region configured to form a first sub-pixel having a first color. The first sub-pixel defining structure includes a lyophilic portion one the bottom side of the first sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The pixel defining structure includes a second sub-pixel defining structure surrounding a second sub-pixel region configured to form a second sub-pixel having a second color. The second sub-pixel defining structure includes a lyophilic portion one the bottom side of the second sub-pixel region and a lyophobic portion on a side opposite to the bottom side. The second color is different from the first color. Thicknesses of the lyophilic portion of the first sub-pixel defining structure and the lyophilic portion of the second sub-pixel defining structure are different.

Abstract: A substrate and a preparation method thereof, a display panel and a preparation method thereof, and a display device are provided. The substrate includes a display region and a peripheral region positioned in a periphery of the display region and used for sealing, the substrate includes: a base substrate; an insulating layer, arranged on a side of the base substrate and positioned in the display region and the peripheral region for sealing; and a plurality of pixel units, positioned on the insulating layer corresponding to the display region, and in the peripheral region, at least one groove is disposed on a side of the insulating layer which faces away from the base substrate, a side of the groove which is away from the base substrate is open, and a depth direction of the groove is perpendicular to the base substrate.

Abstract: An electroluminescent device, a method for fabricating the same, a display panel, and a display device are disclosed. The electroluminescent device includes a hole inject layer, a hole transport layer, an electron transport layer, and an electron inject layer. At least one of the hole inject layer, the hole transport layer, the electron transport layer, and electron inject layer is a target film including a small molecular layer and a large molecular layer which are arranged in a stacked manner.

Abstract: A display substrate has a display area and a non-display area. The non-display area includes a dummy pixel area located in a periphery of the display area. The display substrate includes a substrate; a first pixel defining layer disposed on the substrate and located in the display area, the first pixel defining layer having a plurality of first openings; and a second pixel defining layer disposed on the substrate and located in the dummy pixel area, the second pixel defining layer having a plurality of second openings. A capacity of a second opening is greater than a capacity of a first opening, and an open area of a second opening is less than or equal to an open area of a first opening.

Abstract: A display panel, a manufacturing method thereof and a display apparatus are provided. The display panel includes: a base substrate (10); a plurality of pixel units (P) are arranged on the base substrate (10); a pixel defining layer (11), located on the base substrate (10); the pixel defining layer (11) includes: a plurality of openings (U) located in all the pixel units (P) respectively, and a plurality of communicating grooves (T); and the openings corresponding to the two pixel units with the same color are connected through the communicating grooves (T).