Light-emitting device, projector, and method for manufacturing light-emitting device
A technology of a light-emitting device and a manufacturing method, which can be applied to projection devices, instruments, optics, etc., can solve the problems of not being able to obtain a prescribed amount of light, undesired light, etc.
Pending Publication Date: 2022-07-29
SEIKO EPSON CORP
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- Description
- Claims
- Application Information
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Problems solved by technology
[0004] However, in conventional light-emitting devices equipped with nanostructures, due to the influence of leakage current, it is difficult to flow a predetermined amount of current in the original light-emitting region. Undesirable luminescence and other adverse conditions in the area
Method used
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Embodiment Construction
[0021] Hereinafter, one Embodiment of this invention is described using drawing.
[0022] figure 1 It is a schematic block diagram of the projector of this embodiment.
[0023] In each of the following drawings, in order to facilitate the observation of the respective components, the scales of the dimensions may be shown differently depending on the components.
[0024] like figure 1 As shown, the projector 100 of the present embodiment is a projection-type image display device that projects an image on the screen SCR. The projector 100 has a light-emitting device 1R, a light-emitting device 1G, a light-emitting device 1B, a cross dichroic prism 3 , and a projection optical device 4 . The configuration of the light-emitting devices 1R, 1G, and 1B will be described later.
[0025] The light-emitting device 1R emits red light. The light-emitting device 1G emits green light. The light-emitting device 1B emits blue light. The light-emitting devices 1R, 1G, and 1B can direct...
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Abstract
The invention provides a light-emitting device, a projector, and a method of manufacturing the light-emitting device, which suppress leakage current and have high light-emitting efficiency. This light-emitting device is provided with: a substrate; a columnar portion group provided on the substrate and comprising a plurality of columnar portions having a laminated structure of a first semiconductor layer, a light-emitting layer, and a second semiconductor layer; and an electrode that is provided on the plurality of columnar portions and that injects a current into the plurality of columnar portions, the plurality of columnar portions including a plurality of first columnar portions and a plurality of second columnar portions disposed around the plurality of first columnar portions, the second columnar portions having a shape in which a part of the shape of the first columnar portions is missing. The second columnar portions are lower than the first columnar portions in height, and the electrode is electrically insulated from the plurality of second columnar portions.
Description
technical field [0001] The present invention relates to a light-emitting device, a projector, and a method for manufacturing the light-emitting device. Background technique [0002] A light-emitting device including a plurality of nanostructures having a periodic structure has been conventionally known. The following Patent Document 1 discloses a semiconductor optical element array including a semiconductor substrate, a plurality of nanocolumnar crystals provided on the semiconductor substrate, and active layers each provided on the plurality of nanocolumnar crystals. Such nanostructures have a columnar shape, and are also called, for example, nanopillars, nanowires, nanorods, nanopillars, and the like. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2013-239718 [0004] However, in conventional light-emitting devices including nanostructures, it is difficult for a predetermined amount of current to flow in the original light-emitting region due to the influence ...
Claims
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IPC IPC(8): H01L33/24H01L33/38H01L33/62
CPCH01L33/24H01L33/38H01L33/62G03B21/2033H01S5/34333H01S5/04257H01S5/11H01S5/185H01S5/1042H01S5/2027H01S5/42H01S5/04253H01S5/04256H01S5/341H01S5/4025
Inventor 宫田崇
Owner SEIKO EPSON CORP