An object is to provide a polarizing plate, a circularly polarizing plate, and a method for producing a polarizing plate, each of which can accomplish both of the antireflection effect for external light and an improvement in the utilization efficiency of light emitted by a light emitting element, in a case of being used in a self-luminous display device using an inorganic EL element, an organic EL element, or the like. The polarizing plate is a polarizing plate having an alignment film and a polarizer layer including a dichroic coloring agent, in which the polarizing plate has a plurality of through-holes that penetrate the alignment film and the polarizer layer, and the light transmittance in a portion where the alignment film and the polarizer layer are present is 80% or less.

A display substrate includes a substrate, at least one inorganic film, metal film(s) and organic film(s), the at least one inorganic film is disposed on the substrate; at least one edge portion of the entire at least one inorganic film is step-shaped. The metal film(s) are disposed on a side of the at least one inorganic film facing away from the substrate. A metal film includes a conductive pattern and residual pattern(s), and an orthographic projection of a residual pattern on the substrate is located within an orthographic projection of a step-shaped edge portion of the at least one inorganic film on the substrate. An organic film is disposed on a side of the metal film facing away from the substrate, and an edge portion of the organic film covers the residual pattern of the metal film.

A display panel of the present disclosure includes a substrate. A driving layer is arranged on a side of the substrate, and has an opening, a pixel area outside the opening, and a transition area therebetween; a surface of the driving layer distal to the substrate is provided with an isolation slot, located in the transition area and surrounding the opening. The isolation slot includes a first and second slot body intercommunicated towards the substrate. An orthographic projection of one side wall of the second slot body is outside that of the first slot body, and an orthographic projection of another side wall of the second slot body is between that of the two side walls of the first slot body. The light-emitting device layer is arranged on the surface of the driving layer distal to the substrate and includes a light-emitting functional layer, disconnected in the second slot body.

Disclosed are a display panel in which a unit pixel is divided into a wide-angle area and a narrow-angle area in which at least sub-pixel is disposed and light emission is individually and selectively performed, a display device including the same, and a manufacturing method thereof. A semi-cylindrical lens is disposed in the wide-angle area so as to cover a plurality of sub-pixels. Semi-spherical lenses are disposed in the narrow-angle area so as to cover sub-pixels respectively. Therefore, a direction of light emitting from a light-emitting layer is controlled by adjusting a refractive index of each of the lenses in the wide-angle area and the narrow-angle area. Thus, a viewing angle is controlled.

The present disclosure provides an organic light-emitting display substrate and a display device. The display substrate includes a base substrate, a driving circuit layer on the base substrate and a light-emitting device on one side of the driving circuit layer away from the base substrate. The light-emitting device includes a first electrode layer including separated first electrode patterns. The display substrate further includes a reflective metal layer insulated from the first electrode layer. An orthographic projection of each reflective metal pattern onto the base substrate overlaps an orthographic projection of at least two first electrode patterns onto the base substrate, which can appropriately reduce a thickness of an anode layer due to the presence of the reflective metal layer, thereby reducing segment difference of the light-emitting layer near the anode, improving the uniformity of the light-emitting layer, and improving performance of the display panel.

A display device includes: a substrate; a light emitting element disposed on the substrate; an encapsulation layer disposed on the light emitting element; an organic layer disposed on the encapsulation layer; a first light shielding layer disposed on the organic layer; and an inorganic layer disposed between the organic layer and the first light shielding layer, and including a first region overlapping the first light shielding layer in a plan view and a second region having a refractive index less than a refractive index of the first region.

Provided are a display substrate, a preparation method thereof and a display apparatus. The display substrate includes a substrate and a plurality of pixel units disposed in matrix on the substrate, wherein each pixel unit includes a plurality of sub-pixels, and each sub-pixel includes a driving structure layer, a first electrode and a first pixel define layer on the driving structure layer, and a light absorption layer disposed on the first pixel define layer. The first pixel define layer includes a plurality of first barriers and first pixel openings disposed between the first barriers, the first pixel opening exposes at least part of the first electrode, and the first pixel opening includes a first surface close to the first electrode, a second surface opposite to the first surface and a first sidewall between the first and second surfaces.

Provided are a display substrate and a display device. The display substrate includes a display region and a peripheral region surrounding the display region. The peripheral region includes a first edge extending in a first direction, a second edge extending in a second direction and a transition edge between the first edge and the second edge, and the first direction and the second direction intersect. The display substrate includes a base substrate and an encapsulation layer located on the base substrate, the display substrate further includes multiple through holes, the through holes are located between the base substrate and the encapsulation layer, the through holes include a first through hole located at the transition edge, the first through hole includes first target through holes, and length directions of the first target through holes intersect with the first direction and the second direction.

Provided are a display panel and a manufacturing method thereof, and a display device. The display panel includes: a base substrate including a display area and a peripheral area; sub-pixels located, at least one sub-pixel including a driving transistor including conductive layers; a first dam located at the peripheral area; a second dam located at the peripheral area and located on one side of the first dam away from the display area; an encapsulation layer, orthographic projections of the sub-pixels, the first and the second dam on the base substrate being located within that of the encapsulation layer; and at least one pressure sensor located on at least one of a first side of the second dam proximate to the first dam or a second side away from the first dam, wherein at least one resistor in each pressure sensor is located in a same layer as one conductive layer.

Provided are a display substrate, a preparation method thereof, and a display apparatus. The display substrate includes a display region, a first transition region located in the display region, a second transition region located in the first transition region, and a vacant region located in the second transition region, wherein the first transition region includes a substrate, a buffer layer disposed on the substrate, an insulating layer disposed on the buffer layer, and a plurality of dam spacers disposed on the insulating layer; and the second transition region includes a substrate, a buffer layer disposed on the substrate, and a plurality of post spacers disposed on the buffer layer, and the plurality of dam spacers and the plurality of post spacers are all disposed around the vacant region.