A display device includes: pixel electrodes; a first insulation layer having openings corresponding to the respective plurality of pixel electrodes, the first insulation layer being on each periphery of the plurality of pixel electrodes; a second insulation layer on an upper surface of the first insulation layer except for a part thereof; and an electroluminescence layer including light-emitting layers overlapping with the pixel electrodes. Each of the light-emitting layers and another one of the light-emitting layers in different light-emitting colors are adjacent to each other, constituting a pair of different-color-emitting layers. The openings include a pair of different-color openings that overlap with the respective pair of different-color-emitting layers. The second insulation layer is at least between the pair of different-color openings and is adjacent to each of the pair of different-color openings entirely along mutually opposed sides of the pair of different-color openings.

A method of manufacturing a display substrate which includes a central display area and an arc-shaped stretch area located at a corner of the central display area, wherein the method includes: preparing a substrate to be etched, which includes a flexible substrate, a stack structure disposed on the flexible substrate, and a last-dry-etched metal layer disposed on a side of the stack structure away from the flexible substrate, the stack structure including an active layer, at least one conductive layer, and a plurality of insulating layers, wherein the last-dry-etched metal layer is a last metal layer that is formed through dry etching; and forming a stretch groove by patterning the substrate to be etched, wherein the stretch groove is disposed in the stretch area and passes through the stack structure and a part of the flexible substrate. A display substrate, a display panel and a display device are further provided.

Provided are a display panel and a preparation method thereof, and a display apparatus. The display panel includes a first display region, and the first display region includes multiple sub-display regions and a first light transmittance region located between adjacent sub-display regions. Each first sub-display region of the multiple sub-display regions includes a first light-emitting element and a first filter unit disposed in a first light-emergence direction of the first light-emitting element. Each second sub-display region in the multiple sub-display regions includes a first collimating light extraction element disposed in a second light-emergence direction of the first light-emitting element and a second filter unit disposed in a light-emergence direction of the first collimating light extraction element.

A display substrate is provided. The display substrate includes: a base substrate; a light-shielding layer disposed on the base substrate, the light-shielding layer comprising a light-shielding region; and a pixel drive layer disposed on a side of the light-shielding layer away from the base substrate, the pixel drive layer including at least one first thin-film transistor, at least one second thin-film transistor, and a first electrode plate of at least one storage capacitor, wherein the first thin-film transistor is disposed in correspondence with the light-shielding region, the second thin-film transistor in correspondence with the light-shielding region, and the at least one first electrode plate are disposed in correspondence with the light-shielding region.

Provided is a display substrate. The display substrate includes a base substrate, a patterned film disposed on a side of the base substrate, and a planarization film disposed on a side, distal from the base substrate, of the patterned film, wherein a surface, distal from the base substrate, of the patterned film has a depressed portion and a non-depressed portion. A thickness of the depressed portion is less than a thickness of the non-depressed portion, and lyophilicity of the depressed portion lyophilicity is higher than the lyophilicity of the non-depressed portion.

The present disclosure relates to a flexible display device including: a substrate over which a thin film transistor is disposed, an intermediate layer disposed to cover the thin film transistor, a first electrode located on the intermediate layer and connected to the thin film transistor, a bank located on the intermediate layer and the first electrode and defining a first region exposing a part of the intermediate layer, a second region exposing a part of the first electrode, and a third region excluding the first and second regions, a first structure located in the first region defined by the bank and tapered toward the substrate, an organic light emitting layer located on the first electrode exposed in the second region, and a second electrode disposed on the organic light emitting layer. Both lateral surfaces of an inverse-tapered structure are disposed to contact the bank, and as a result, corresponding adhesion can be improved, and peeling defects can be reduced or corrected.

A display panel including a corner includes: a substrate including a display area including a front display area, and a peripheral area outside the display area; an insulating layer on the substrate in the display area and the peripheral area, where an outer groove or an outer through hole is defined in the insulating layer in the peripheral area; an upper inorganic pattern layer on the insulating layer, where the upper inorganic pattern layer includes a protruding tip protruding toward a center of the outer groove or a center of the outer through hole; and a front display element on the insulating layer and overlapping the front display area. The upper inorganic pattern layer is apart from the front display element.

An electroluminescent display device includes a display panel having a display area and a non-display area. A planarization layer is over the non-display area. A bank is on the planarization layer. An organic layer and a cathode are on the bank. A trench pattern extends through the cathode and the organic layer. An adhesive layer and an encapsulation substrate are disposed over the cathode. The adhesive layer covers the trench pattern. The adhesive layer is effective to slow a rate of moisture penetration to a side surface of the non-display area, allowing for improvements in reliability and a reduction in bezel width.

A display panel including a penetration portion includes: a substrate including a central area and an outer area extending from an outer side of the central area, the central area including a first central area and a second central area spaced apart from the first central area by the penetration portion therebetween; and a display element arranged on the substrate and including a first display element and a second display element, the first display element overlapping at least a portion of the first central area, and the second display element overlapping at least a portion of the second central area. At least one of an edge of the central area and an edge of the outer area defines at least a portion of the penetration portion, and a thickness of the substrate in the outer area is less than a thickness of the substrate in the central area.

A display device includes a lower electrode disposed on a substrate; a pixel-defining layer overlapping an edge of the lower electrode, the pixel-defining layer comprising an opening that exposes a central portion of the lower electrode; an emission layer overlapping the opening and arranged on the lower electrode; an upper electrode disposed on the emission layer; and at least one repellent pattern disposed on an upper surface of the pixel-defining layer and a portion of a side surface of the pixel-defining layer, wherein the side surface of the pixel-defining layer defines the opening.