An organic EL display device of the present disclosure includes a substrate, a lens layer including a lens, a light-emitting layer containing an organic light-emitting material, a reflection portion disposed between the substrate and the light-emitting layer, and having light reflecting properties for reflecting light generated in the light-emitting layer, and a reflection transmission portion disposed between the light-emitting layer and the lens layer, and having light reflecting properties and translucency, and moreover causing resonance of light, which is generated in the light-emitting layer, between the reflection portion and the reflection transmission portion.

Disclosed are an organic light emitting diode, an organic light emitting diode display device and a display device for vehicles using the same. The organic light emitting diode may achieve process simplification and reduction in material costs while maintaining high luminance, through structure change.

Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.

Disclosed is a display panel configured such that, in a structure in which the distance between a display surface and a viewer is short, the structure between a reflective plate and a first electrode (an anode) is changed such that light having three or more color peak properties for all subpixels is transmitted through a second electrode (a cathode), whereby white expression as well as color expression is possible, and a head mounted display device including the same.

An electronic device including elements arranged on a substrate, each of the elements including an insulating layer, a first electrode, a functional layer, and a second electrode in mentioned order starting from a side closer to the substrate. The insulating layer has an inclined portion that is inclined relative to the substrate. The first electrode has a first portion positioned on the inclined portion and a second portion in contact with the functional layer. The second portion has a smaller inclination angle relative to the substrate than the first portion. A thickness of the functional layer positioned on the first portion in a direction normal to a functional layer surface in contact with the first portion is smaller than a thickness of the functional layer positioned on the second portion in a direction normal to a functional layer surface in contact with the second portion.

A light-emitting device includes a semi-transmissive reflection layer, a first reflection layer that is disposed in a first sub-pixel, a second reflection layer that is disposed in a second sub-pixel, the second sub-pixel that emits same color light as the first sub-pixel, and a light-emitting functional layer that is disposed between the first reflection layer and the semi-transmissive reflection layer, the light-emitting functional layer that is disposed between the second reflection layer and the semi-transmissive reflection layer. A thickness of the light-emitting functional layer in the second sub-pixel is thicker than a thickness of the light-emitting functional layer in the first sub-pixel.

A light-emitting layer structure that maximizes constructive interference for light emission by varying a phase shift introduced by reflective electrodes. The light-emitting layer structure includes a first and second optical cavity including a first and second reflective electrode; a first and second partially transparent electrode; and a first and second emissive layer (EML) disposed between the first and second reflective electrodes and the first and second partially transparent electrodes, wherein the first EML emits light having a first wavelength; wherein the first reflective electrode introduces a first phase shift, depending on the first wavelength, on reflection of light emitted by the first EML; and wherein the second EML emits light having a second wavelength and the second reflective electrode introduces a second phase shift, depending on the second wavelength, on reflection of light emitted by the second EML, and the first phase shift is different from the second phase shift.

A display panel and a display apparatus are provided. The display panel includes a light-emitting unit, a pixel defining layer, and a light-shielding layer. The light-emitting unit includes first and second electrodes, and a light-emitting layer. The pixel defining layer includes an opening portion where the light-emitting layer is partially located, and a non-opening portion. The first electrode is located in the opening portion in a direction perpendicular to a plane of the substrate and includes first and second openings. In the direction perpendicular to the plane of the substrate, the light-shielding layer does not overlap with the first opening. Orthographic projections of the light-shielding layer and the first electrode on the plane of the substrate are first and second projections, respectively. In a first direction, a difference between a length of the second opening and a sum of lengths of the first and second projections satisfies a preset threshold.

A display panel and a display apparatus are provided. The display panel includes a light-emitting unit, a pixel defining layer, and a light-shielding layer. The light-emitting unit includes first and second electrodes, and a light-emitting layer. The pixel defining layer includes an opening portion where the light-emitting layer is partially located, and a non-opening portion. The first electrode is located in the opening portion in a direction perpendicular to a plane of the substrate and includes first and second openings. In the direction perpendicular to the plane of the substrate, the light-shielding layer does not overlap with the first opening. Orthographic projections of the light-shielding layer and the first electrode on the plane of the substrate are first and second projections, respectively. In a first direction, a difference between a length of the second opening and a sum of lengths of the first and second projections satisfies a preset threshold.

Full-color pixel arrangements for use in devices such as OLED displays are provided, in which multiple sub-pixels are configured to emit different colors of light, with each sub-pixel having a different optical path length than some or all of the other sub-pixels within the pixel.