A sealing member (200) is a sheet-like member to seal a light-emitting unit of a light-emitting device. The sealing member (200) is cut into a shape including a corner (220) having a central angle that is larger than 180 degrees when the light-emitting unit of the light-emitting device is sealed. When the sealing member (200) is cut, irregularities occur in the thickness direction in a region (222: first region) having a predetermined width w from an edge of the corner (220). When the irregularities occur, sealability of the sealing member (200) is deteriorated. Here, when a curvature radius of the corner ((220)) is equal to or greater than the above-mentioned width w, occurrence of the above-mentioned irregularities is inhibited.

Disclosed herein is an organic light emitting diode (OLED) lighting device capable of expressing characters or drawings with various colors. The OLED lighting device according to aspects of the present disclosure includes a thermochromic pattern arranged inside or outside of a substrate, the thermo chromic pattern having a property of changing a color thereof according to a change in temperature. By applying a reversible thermochromic pattern, which may maintain or lose an original color thereof according to a temperature change, to the inside or outside of the substrate, it is possible to express characters and drawings with various colors without designing a processing pattern inside the substrate.

A display device may include a substrate having a first pixel area, a first electrode on the substrate; a passivation layer between the substrate and the first electrode, a second electrode on the first electrode, and an organic emission layer between the first electrode and the second electrode. The first pixel area may include an emission area and a non-emission area surrounded by the emission area.

A light emitting device (10) includes a light emitting portion (140), a first terminal (203), a second terminal (204), a first interconnect (191), and a second interconnect (192). The light emitting portion (140) is disposed on a first surface (101) side of a substrate (100), and has a laminated structure including a first electrode (110), an organic layer (120), and a second electrode (130). The first terminal (203) is disposed over a first end portion (103) of the substrate (100), and is electrically connected to the first electrode (110) or the second electrode (130). The second terminal (204) is disposed over a second end portion (104) of the substrate (100) facing the first end portion (103), and is connected to the first electrode (110) or the second electrode (130). The first interconnect (191) is connected to the first terminal (203) so as to extend in a direction different from a direction toward the second end portion (104). The second interconnect (192) is connected to the second terminal (204) so as to extend in a direction different from a direction toward the first end portion (103).

A light-emitting component provides an emitter layer including phosphorescent and fluorescent emitter materials, and at least one predefined first and second display regions. The first region has both emitter materials. The second region has the phosphorescent emitter material. A first electromagnetic radiation is emitted upon the transition from the first excited state to the ground state of the phosphorescent emitter material. A second electromagnetic radiation is emitted upon the transition from the excited state to the ground state of the fluorescent emitter material. The excited state of the fluorescent emitter material is occupied by an energy transfer from the second excited state of the phosphorescent emitter material to the excited state of the fluorescent emitter material so that a mixed light composed of first and second electromagnetic radiations is emittable from the first region, and the light that is emittable from the second region is free of second electromagnetic radiation.

When visible light (light having wavelength of 380 nm or more and 780 nm or less) is transmitted through a first light transmitting region (TR1) (a first light emitting portion (160a)), a second light transmitting region (TR2) (a second light emitting portion (160b)) and a third light transmitting region (TR3) (a first light transmitting portion (162)), more specifically, when light from a D65 light source is transmitted through the first light transmitting region (TR1), the second light transmitting region (TR2) and the third light transmitting region (TR3), both of a color difference between the first light transmitting region (TR1) and the third light transmitting region (TR3) and a color difference between the second light transmitting region (TR2) and the third light transmitting region (TR3) are both, for example, 0.4 or more and 6.5 or less in CIELAB. This reduces conspicuousness of both of the first light transmitting region (TR1) and the second light transmitting region (TR2). Furthermore, it is possible to identify the first light transmitting region (TR1), the second light transmitting region (TR2), and the third light transmitting region (TR3)

The invention relates to a radiation-emitting device (600), which comprises a substrate (100), an inner optoelectronic component (300) and an outer optoelectronic component (200) which at least partially laterally surrounds the inner optoelectronic component (300). Further, the radiation-emitting device (600) has a cover element (500) which is arranged on the optoelectronic components (200, 300) and comprises a first contact element (521), connected to a first electrode surface of the inner optoelectronic component (300) in an electrically conductive manner, and a second contact element (522) connected to a second electrode surface of the inner optoelectronic component (300) in an electrically conductive manner.

A light emitting apparatus includes: a sealing member (20) forming a sealing region sealing a planar light emitting unit; and a wiring member (51) including a conductive unit (61) electrically connected to the planar light emitting unit and extending from the sealing region to an outside. The sealing member (20) has a drawing port opened at a periphery of the sealing member for drawing the wiring member (51) to the outside. The wiring member (51) includes: an internal wiring portion (71) in which the conductive unit (61) is disposed in the sealing region; an external wiring portion (72) in which the conductive unit (61) is disposed in the outside; and a boundary wiring portion (73) in which the conductive unit (61) is disposed in the drawing port and which has a smaller thickness than the internal wiring portion (71) and/or the external wiring portion (72). Such a configuration provides a light emitting apparatus having a sealing structure of the planar light emitting unit for suppressing deterioration of sealing performance due to disposition of the wiring member.

A lighting device includes a substrate including a display area and a non-display area and an organic light emitting layer disposed in the display area. A first electrode is disposed on the organic light emitting layer and a second electrode is disposed below the organic light emitting layer. A phase change material layer is disposed below the second electrode and a plurality of third electrodes is disposed between the substrate and the phase change material layer. Therefore, a pattern having various colors of light and various shapes may be implemented based on a shape of the plurality of third electrodes, a phase change of the phase change material layer, and a color of light emitted from the organic light emitting layer.

An organic light-emitting diode is disclosed. In an embodiment, the diode includes a first light-emitting segment and at least a second light-emitting segment, wherein the first and second light-emitting segments include a common first electrode and a common second electrode, and are configured to emit radiation with different brightnesses, wherein the first electrode includes at least one separating line that does not completely cut through the first electrode, wherein an electric conductivity of the first electrode is reduced in a region of the separating line, wherein the separating line separates the first light-emitting segment from the second light-emitting segment, and wherein the second light-emitting segment has a lower brightness during operation than the first light-emitting segment.