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Light-emitting element and display device

A technology of light-emitting devices and optical devices, which is applied in the direction of identification devices, instruments, semiconductor devices, etc., can solve the problems of blackening of LED packages, achieve the effect of preventing black floating and improving orientation characteristics

Active Publication Date: 2019-01-04
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the LED package becomes black (for example, see JP 2003-017755A)

Method used

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  • Light-emitting element and display device
  • Light-emitting element and display device
  • Light-emitting element and display device

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0045] 3. Example 2 (light emitting device according to second aspect of the present disclosure)

[0046] 4. Reference Example 1

[0047] 5. Reference example 2

[0048] 6. Other

[0049]

[0050] In the light-emitting device according to the first aspect of the present disclosure, the black layer may be embodied as being formed above the light-emitting part; and the light-emitting device may be embodied as including: a first interlayer film covering the light-emitting part; A black layer is formed on one interlayer film; and a second interlayer film covers the black layer and forms a light diffusion part on the second interlayer film. Alternatively, the light emitting device may be embodied to include: a first interlayer film on which the black layer is formed; and a second interlayer film covering the black layer and the light emitting portion and forming the light emitting portion The diffusion part, wherein the light emitting part may be embodied as being located in t...

example 1

[0064] Example 1 relates to the light emitting device according to the first aspect of the present disclosure and the display device (light emitting device display device) of the present disclosure. exist Figure 1A , a schematic partial cross-sectional view of a light emitting device according to Example 1 is shown.

[0065] The light emitting device of Example 1 includes a light emitting portion 21 , a black layer 51 , and a light diffusion portion 41 formed on or over the black layer 51 (in Example 1, specifically, over the black layer 51 ). In addition, the black layer 51 is provided with an opening portion 53 that allows the light emitted from the light emitting portion to pass therethrough. Then, the light passing through the opening portion 53 passes through the light diffusion portion 41 .

[0066] Here, the light emitting part 21 is connected to (implemented in) the substrate 11 , and the orthographic projection image of the light emitting part 21 on the substrate 11...

example 1A

[0080] exist Figure 1B A schematic partial cross-sectional view of the light emitting device of Example 1A, which is a modified example of the light emitting device of Example 1, is shown in . In the light emitting device of Example 1A, the region 31A of the first interlayer film 31 located above the light emitting portion 21 is replaced by the second interlayer film 32 . Specifically, according to the light emitting device of Example 1A, a portion 31A of the first interlayer film 31 located below the bottom of the opening portion 53 is removed, and the portion 31A is embedded with the second interlayer film 32 .

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PUM

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Abstract

This light-emitting element comprises a light-emitting part 21, a black layer 51, and a light-diffusing part 41 formed on or above the black layer 51. An opening part 53 allowing light that has been emitted from the light-emitting part to pass therethrough is provided in the black layer 51, and light that has passed through the opening part 53 passes through the light-diffusing part 41.

Description

technical field [0001] The present disclosure relates to a light emitting device and a display device including the light emitting device. Background technique [0002] A light emitting diode display device in which light emitting devices (in particular, light emitting diodes (LEDs)) are arranged in a two-dimensional matrix is ​​well known. Furthermore, for example, a preferred orientation characteristic (radiation distribution) of light emitted from a light emitting device is a Lambertian distribution in order to exclude viewing angle dependence. Therefore, structures for giving such orientation characteristics are generally provided in LED packages (for example, see JP 2011-243330A). Preferably, from the viewpoint of improving image quality, when the surface of the light emitting diode display device is observed, a dull state appears. Therefore, the LED package becomes black (for example, see JP 2003-017755A). [0003] Citation list [0004] patent documents [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/58G09F9/30G09F9/33
CPCG09F9/30G09F9/33H01L33/58H01L25/0753H01L33/44H01L27/156H01L33/50H01L33/60
Inventor 大前晓片冈祐亮大桥达男青木沙耶香西中逸平琵琶刚志
Owner SONY CORP