Both-side light emitting lighting device

A lighting device, two-sided technology, which is applied to lighting devices, lighting device parts, lighting and heating equipment, etc., can solve problems such as the reduction of light extraction efficiency, and achieve the effects of improving light extraction efficiency and simple adjustment.

Inactive Publication Date: 2021-03-30
(株)尖端实验室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] As mentioned above, in order to solve the problem of low light extraction efficiency in double-sided light-emitting lighting devices, an embodiment of the present invention aims to provide a double-sided light-emitting lighting device with higher light extraction efficiency and improved power efficiency.

Method used

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Embodiment Construction

[0032] Since the invention allows for various changes and many embodiments, specific embodiments will be shown in the drawings and described in detail in the detailed description. The effects and features of the present invention and a method for achieving the effects and features will become more apparent with reference to the embodiments described in detail below and the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms.

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, and when describing with reference to the drawings, the same reference numerals will be assigned to the same or corresponding technical features, and repeated descriptions thereof will be omitted.

[0034] In the following embodiments, expressions in the singular include expressions in the plural unless the context clearly states otherwise.

[003...

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Abstract

The present application relates to a both-side light emitting lighting device, which maximizes a scattering effect so as to be capable of increasing light extraction efficiency, and can acquire high power efficiency as a both-side light emitting lighting device so as to be capable of increasing the lifespan of the lighting device, and comprises: a first light-output surface; a second light-outputsurface positioned to face the first light-output surface; a light-emitting element positioned between the first light-output surface and the second light-output surface; and a light extraction film including a substrate, which is positioned on the first light-output surface, has first and second surfaces facing each other, and is provided so that light is incident to the first surface and outputted to the second surface, and a plurality of pores irregularly distributed in the substrate, wherein the substrate allows the light to be scattered when the light transmits through the substrate, thescattering includes first scattering by the pores and second scattering by the first surface and / or the second surface, and the substrate is provided so that a first degree of scattering caused by thefirst scattering relatively differs from a second degree of scattering caused by the second scattering.

Description

technical field [0001] Embodiments disclosed in the present invention relate to a double-sided lighting device. Background technique [0002] Self-luminous devices such as organic light-emitting devices can be used in surface-emission lighting devices, but light generated in the light-emitting layer must pass through many interfaces until it is emitted from the light-extracting surface, so much light loss occurs in the process, thereby reducing the light-extraction efficiency. question. The reduction in light extraction efficiency may increase power consumption, which may shorten the lifetime of the lighting device. [0003] In addition, the illuminating device can emit light from two sides, that is, the back and the front, but it is difficult to adjust the brightness in the directions of the back and the front respectively. Contents of the invention [0004] technical problem [0005] As mentioned above, in order to solve the problem of low light extraction efficiency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V9/40G02B5/20F21Y115/10
CPCF21V9/00F21K9/20F21K9/64G02B5/20F21V9/40H01L33/56H01L33/58H01L2933/0091H10K50/854F21Y2115/10
Inventor 张夏准朴伦正申京任
Owner (株)尖端实验室
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