An organic light-emitting diode display is disclosed. In one aspect, a semiconductor layer is on a substrate, and the semiconductor layer is non-linear. A gate metal line is on the semiconductor layer, and an insulating layer covering the semiconductor layer and the gate metal line and having a plurality of contact holes connected to the semiconductor layer. A data metal line is on the insulating layer and electrically connected to the semiconductor layer via a selected one of the contact holes. An OLED is electrically connected to the gate metal line and the data metal line, and the semiconductor layer includes a narrow semiconductor layer having a first width and an expansion semiconductor layer formed adjacent to the selected contact hole and having a second width greater than the first width.

A display device includes a first light emitting element, a second light emitting element, and a third light emitting element that are disposed on a substrate and emitting light of different colors, respectively; a first insulation layer disposed on the first light emitting element, the second light emitting element, and the third light emitting element, and including at least one opening; and a second insulation layer disposed on the first insulation layer, and disposed in the at least one opening, wherein a refractive index of the second insulation layer is higher than a refractive index of the first insulation layer, and the at least one opening overlaps at least one of the first light emitting element, the second light emitting element, and the third light emitting element in a plan view, and does not overlap at least another one in a plan view.

A pixel arrangement structure includes a plurality of pixel groups that are periodically arranged. Each pixel group includes four pixels, a first pixel (310) and a second pixel (320) are arranged in a same row, a third pixel (330) and a fourth pixel (340) are arranged in adjacent another row, the first pixel (310) and the third pixel (330) are arranged in a same column, and the second pixel (320) and the fourth pixel (340) are arranged in adjacent another column. An arrangement of sub-pixels in the first pixel (310) is different from an arrangement of sub-pixels in the second pixel (320), an arrangement of sub-pixels in the third pixel (330) is same as the arrangement of the sub-pixels in the second pixel (320), and an arrangement of sub-pixels in the fourth pixel (340) is same as the arrangement of the sub-pixels in the first pixel (310). The pixel arrangement structure allows the opening area of the metal mask for manufacturing the pixel arrangement structure to be larger, and therefore the aperture ratio is increased and the brightness, service life and image definition of the AMOLED product are improved. An organic light emitting device, a display device and a mask are also provided.

A display device includes first and second unit pixels adjacent to each other in a first direction. Each of the first and second unit pixels includes a first group disposed in a first row and a second group disposed in a second row spaced apart from the first row. The first group includes a first light emitting area emitting a first light, and a second light emitting area emitting a second light. The second group includes a light receiving area and third and fourth light emitting areas spaced apart from each other with the light receiving area interposed therebetween and emitting the third light. The fourth light emitting area of the first unit pixel and the third light emitting area of the second unit pixel are spaced apart from each other by a distance from about 25 micrometers to about 100 micrometers in the first direction.

Embodiments of the present disclosure relate to a display device, and more particularly, to a display device where a difference between an area of a first opening and an area of the first emission region in the display device is greater than a difference between an area of a second opening and an area of the second emission region in the display device. As a result, reflected light is not excessively biased toward any one color on color coordinates.

A display panel having a first display region and a second display region is provided. The display panel includes sub-pixels. Light transmittance of a non-light-emitting region in the second display region is greater than light transmittance of a non-light-emitting region in the first display region. For a first sub-pixel of the sub-pixels located in the first display region and a second sub-pixel of the sub-pixels located in the second display region that emit a same color, the first sub-pixel corresponds to a first pixel circuit, and the second sub-pixel corresponds to a second pixel circuit, and a width-to-length ratio of a driving transistor in the second pixel circuit is greater than a width-to-length ratio of a driving transistor in the first pixel circuit.

An opto-electronic device includes: a first electrode; an organic layer disposed over the first electrode; a nucleation promoting coating disposed over the organic layer; a nucleation inhibiting coating covering a first region of the opto-electronic device; and a conductive coating covering a second region of the opto-electronic device.

A pixel arrangement structure includes: first sub-pixels, second sub-pixels and third sub-pixels, all being not overlapped but being spaced apart. The third sub-pixels have a first symmetry axis and a second symmetry axis that are perpendicular to each other. The first symmetry axis extends through a geometric center of a respective first sub-pixel adjacent to a respective third sub-pixel of the plurality of third sub-pixels, intersects a first edge of the respective third sub-pixel at a first intersection point, and intersects a second edge of the adjacent respective first sub-pixel at a second intersection point. A distance between the first intersection point and the second intersection point is a minimum distance between the respective third sub-pixel and the respective first sub-pixel. The second symmetry axis is similarly configured with respect to a respective second sub-pixel and the respective third sub-pixel.

The first light-emitting layer is higher in light-emission start voltage than each of the second light-emitting layer and the third light-emitting layer. The second light-emitting layer is higher in visibility of the emission color than each of the first light-emitting layer and the third light-emitting layer. The electroluminescence layer has an inter-pixel section between an adjacent pair of the openings and along the upper surface of the insulation layer. The inter-pixel section between the first opening and the second opening has a first resistance value. The inter-pixel section between the second opening and the third opening has a second resistance value. The inter-pixel section between the third opening and the first opening has a third resistance value. The first resistance value is larger than each of the second resistance value and the third resistance value.

A display substrate and a preparation method therefor, and a display apparatus. The display substrate includes multiple pixel units each including multiple sub-pixels, the multiple sub-pixels includes first color sub-pixels. Each sub-pixel includes a color filter structure layer, the color filter structure layer includes a black matrix defining a pixel opening, and a color filter unit covering the pixel opening. The display substrate includes a first display region and a second display region on the periphery of the first display region. A black matrix in the first display region has small holes, which are filled with light filtering units, and the material of the light filtering units is same as the material of the color filter units of the first color sub-pixels. The area of the first color sub-pixels in the first display region is less than the area of the first color sub-pixels in the second display region.