A display assembly includes a display panel and at least one optical film group each disposed on a display surface. Each optical film group includes a quarter-wave plate, a reflective polarizer and an absorbing polarizer. The reflective polarizer includes a reflective portion capable of allowing light with a polarization direction parallel to a polarization axis of the reflective polarizer to pass through and reflecting light with a polarization direction perpendicular to the polarization axis. An orthographic projection of an effective light-emitting area of at least one sub-pixel is substantially within an orthographic projection of the reflective portion. The absorbing polarizer is capable of allowing light with a polarization direction parallel to a polarization axis of the absorbing polarizer to pass through and absorbing light with a polarization direction perpendicular to the polarization axis. The polarization axis of the reflective polarizer is parallel to the polarization axis of the absorbing polarizer.

The present disclosure provides a display device. The display device including a substrate, a planarization layer formed on the substrate, a transparent electrode formed on the planarization layer, and a pixel defining layer formed on the transparent electrode. The pixel defining layer is configured to define a display area for each pixel and having an opening corresponding to the display area. The display device further includes a light emitting layer formed on the pixel defining layer, a metal electrode formed on the light emitting layer, and a hydrogen-atom blocking material layer formed on the metal electrode.

An opposing substrate as a substrate for an electro-optical device includes a transparent base member and a light shielding portion disposed on a region between pixels on the base member. The light shielding portion includes a first reflective film and a second reflective film that is disposed to overlap the first reflective film and has a reflection rate lower than that of the first reflective film, and a first protective film that covers the first reflective film is provided between the first reflective film and the second reflective film.

An electroluminescent lighting device comprises a substrate including an emission area and a non-emission area surrounding the emission area; an auxiliary line disposed at the emission area and defining a pixel area; a lower pad extended from the auxiliary line and disposed at one side of the non-emission area; an anode layer covering the auxiliary line and the lower pad; an emission layer disposed on the anode layer in the emission area; a cathode layer disposed on the emission layer; a second pad extended from the cathode layer and disposed at another side of the non-emission area; an encapsulation layer covering the emission area on the cathode layer; a cover film attached on the encapsulation layer and having a first pad corresponding to the lower pad; and a conductive adhesive electrically connecting the first pad and the lower pad.

An OLED display substrate, a manufacturing method thereof, and a display device are provided. The OLED display substrate includes a reflective cathode layer, an organic light-emitting layer, a transparent anode layer and a high reflection layer sequentially arranged on a substrate, and the high reflection layer has reflectivity greater than a threshold.

An electronic device for skin management or skin treatments including an active area including a light emission area and a non-light emission area comprises a plurality of organic light emitting devices disposed in the light emission area and emitting same color light; and first to third wavelength converting layers overlapping the light emission area and a part of the non-light emission area, wherein light emitted from the plurality of organic light emitting devices is extracted to outside the electronic device through the first to third wavelength converting layers.

Some embodiments are directed to an optoelectronic device for converting an electrical signal into electromagnetic radiation or vice-versa, including an active zone sandwiched between first and second electrodes, the optoelectronic device having a stack of layers with a lateral edge and first and second opposite faces, the layers of the stack forming at least the active zone and the first and second electrodes, the stack being intended to receive or emit the electromagnetic radiation through the lateral edge perpendicularly to the direction of stacking of the layers.

A display substrate includes: a pixel-defining layer located on the display substrate and including a plurality of light-emitting regions; and a plurality of light-emitting devices located in the plurality of light-emitting regions, respectively, wherein each of the plurality of light-emitting devices includes a pixel electrode, a common electrode, and an organic light-emitting portion between the pixel electrode and the common electrode, wherein the pixel-defining layer includes a first inner side surface and a second inner side surface facing each other in each of the plurality of light-emitting regions, and the pixel electrode is on the first inner side surface and the common electrode is on the second inner side surface.

Embodiments disclosed herein relate to a light emitting device, comprising a first substrate, a pixel isolation structure, electroluminescent structures, and a second substrate, the first substrate and the second substrate are oppositely disposed, and the second substrate is disposed on one side of pixel isolation structure far away from the first substrate, the pixel isolation structure is disposed on the surface of one side of first substrate, the pixel isolation structure forms a plurality of mutually isolated sub-pixel regions on the surface of first substrate, electroluminescent structures are disposed on a portion of first substrate corresponding to each sub-pixel region, the sub-pixel regions further comprise: a quantum dot layer disposed in at least one sub-pixel region, wherein quantum dot layer in each sub-pixel region is located on one side of electroluminescent structures far away from first substrate or located between electroluminescent structure and first substrate.

A light emitting photonic crystal having an organic light emitting diode and methods of making the same are disclosed. An organic light emitting diode disposed within a photonic structure having a band-gap, or stop-band, allows the photonic structure to emit light at wavelengths occurring at the edges of the band-gap. Photonic crystal structures that provide this function may include materials having a refractive index that varies.