One embodiment can provide a photovoltaic roof tile. The photovoltaic roof tile can include a front glass cover, a back glass cover, a plurality of photovoltaic structures positioned between the front and back glass covers, and a single encapsulant layer positioned between the front glass cover and the photovoltaic structures. A surface of the photovoltaic structures is in direct contact with the back glass cover.

The present invention relates to a composition which comprises an electron-transporting host and a hole-transporting host, to the use thereof in electronic devices and to electronic devices containing this composition. The electron-transporting host is particularly preferably selected from the class of the triazine-dibenzofuran-carbazole systems or the class of the triazine-dibenzothiophene-carbazole systems. The hole-transporting host is preferably selected from the class of the biscarbazoles.

A method for manufacturing a photoelectric conversion element includes providing a base structure including a semiconductor substrate having a principal surface, a first electrode located on or above the principal surface, second electrodes which are located on or above the principal surface and which are one- or two-dimensionally arranged, and a photoelectric conversion film covering at least the second electrodes; forming a mask layer on the photoelectric conversion film, the mask layer being conductive and including a covering section covering a portion of the photoelectric conversion film that overlaps the second electrodes in plan view; and partially removing the photoelectric conversion film by immersing the base structure and the mask layer in an etchant.

The present invention provides a mask, a display panel, a method for manufacturing a display panel, and a display device. The display panel has a hollow region and a display region surrounding the hollow region. The display panel includes a plurality of organic light-emitting devices arranged only in the display region. Each of the plurality of organic light-emitting devices includes an anode layer, a cathode layer, a light-emitting layer and a functional layer. The functional layer includes a plurality of uneven portions.

A pixel arrangement structure, a display panel and a mask assembly. The pixel arrangement structure includes a plurality of repeat units arranged in an array, each of the repeat units is an N polygon, N≥4 and N is an even number, the repeat unit includes: a first pixel group including at least two first sub-pixels; at least two second pixel groups, each of the second pixel groups includes two second sub-pixels; and at least two third pixel groups, each of the third pixel groups includes two third sub-pixels, the at least two second pixel groups and the at least two third pixel groups are alternately arranged on a peripheral side of the first pixel group.

A mask assembly and method for manufacturing of the same are provided. A mask assembly includes: a mask frame including a first mask opening and a second mask opening which are located side by side in a first direction and defined by a support bar; a first split mask overlapping the first mask opening; and a second split mask overlapping the second mask opening, and the first split mask and the second split mask are spaced apart from each other in a region overlapping the support bar.

The present disclosure relates to a boron compound applicable to an organic light-emitting diode and an organic light-emitting diode comprising same. More specifically, the present disclosure relates to a boron compound represented by any one of Chemical Formulas A to D and an organic light-emitting diode comprising same, wherein Chemical Formulas A to D are as defined in the description.

A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. In the light-emitting element, an EL layer includes a hole-injection layer, a first hole-transport layer, a second hole-transport layer, a third hole-transport layer, a light-emitting layer, a first electron-transport layer, and a second electron-transport layer in this order; the hole-injection layer includes an organic acceptor; the LUMO level of the host material is higher than that of the first electron-transport layer; the LUMO level of the second electron-transport layer is higher than that of the first electron-transport layer; the host material is a substance including a condensed aromatic ring skeleton; and the first and second electron-transport layers each include a substance having a heteroaromatic ring skeleton.

A display panel, a manufacture method thereof and a display apparatus are provided. The display panel includes a display area, which includes a plurality of pixel units, wherein the pixel units include electroluminescent display devices and pixel drive circuits for driving the electroluminescent display devices to emit light; the electroluminescent display devices include light-emitting devices and virtual light-emitting devices; the light-emitting devices are electrically connected with the pixel drive circuits, while the virtual light-emitting devices are not connected with the corresponding pixel drive circuits; the display area includes a first display area and a second display area; and in the first display area and the second display area, the distribution density of the electroluminescent display devices is the same, and the density of the pixel drive circuits in the second display area is less than that of the pixel drive circuits in the first display area.

A full-color silicon-based organic light-emitting diode structure includes a metal anode layer, an organic functional layer, a metal cathode layer, an encapsulation layer, and a color filter layer. The organic functional layer includes a light-emitting layer configured to emit white light. The light-emitting layer includes a red light-emitting unit, a blue light-emitting unit, a green light-emitting unit, and a light-emitting common transport layer. The red light-emitting unit and the blue light-emitting unit are vapor-deposited on the same fine metal mask, and other structural film layers are vapor-deposited on a common metal mask. The present disclosure overcomes problems that red, green, and blue spectra cannot appear at the same time due to different lengths of red, green, and blue resonant cavities, the color gamut of the product is low due to large intensity differences, and the product life is affected due to large light loss caused by the color filter.