Light emitting device and display device using the light emitting device

A light-emitting device, semiconductor technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing display brightness, wasting electric energy, losing light intensity, etc., and achieving the effect of simple structure

Active Publication Date: 2018-03-02
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the general light source emits non-polarized light, it means that at least half of the light intensity will be lost through the polarizer, which not only reduces the display brightness but also wastes electric energy

Method used

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  • Light emitting device and display device using the light emitting device
  • Light emitting device and display device using the light emitting device
  • Light emitting device and display device using the light emitting device

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Embodiment Construction

[0033] The light-emitting device provided by the present invention and the display device using the light-emitting device will be further described in detail below with reference to the accompanying drawings and specific embodiments. The light-emitting devices provided by the first to fourth embodiments of the present invention are optically pumped light-emitting devices, which are excited by external light to emit light. The light-emitting devices provided by the fifth to eighth embodiments of the present invention are electrically pumped light-emitting devices, which excite the light-emitting devices to emit light by electric energy. A display device using the light emitting device is a liquid crystal display.

[0034] see Figure 1-2 , the first embodiment of the present invention provides a light emitting device 100 , the light emitting device 100 includes an insulating transparent substrate 110 , a metamaterial layer 120 and a light emitting material layer 130 . The ins...

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Abstract

The present invention relates to a light emitting device, which comprises: a first electrode, a first semiconductor layer, an active layer, a second semiconductor layer and a second electrode; the first semiconductor layer, the active layer and the second semiconductor Layers are stacked; wherein, the second electrode is a metal metamaterial layer disposed on the surface of the second semiconductor layer, the metal metamaterial layer is a continuous metal layer, and the continuous metal layer defines a plurality of periods The openings provided form a plurality of periodically arranged metamaterial units; and the distance between the metal metamaterial layer and the active layer is less than or equal to 100 nanometers, and the metal metamaterial layer realizes the activation of the active layer through plasmon field resonance. The nanoscale polarization of the light emitted by the layers allows the light-emitting device to directly emit polarized light. The display device using the light emitting device does not need a special polarizing element, and has a simple structure.

Description

technical field [0001] The present invention relates to a light emitting device and a display device using the light emitting device, in particular to a metamaterial plasmon integrated light emitting device and a display device using the light emitting device. Background technique [0002] Currently liquid crystal displays have been widely used by people. The principle adopted by the liquid crystal display is to use an electrical modulation layer, such as liquid crystal molecules, to change the polarization of incident polarized light, so that the intensity of light that finally passes through the analyzer changes. [0003] In order to generate polarized light, the method widely used at present is to use thin-film polarizers to polarize light emitted by light sources (lamp tubes or LEDs). Since the general light source emits non-polarized light, it means that at least half of the light intensity will be lost through the polarizer, which not only reduces the display brightne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/44H01L33/42G02F1/13357
CPCH01L33/38H01L33/44H01L33/507H01L33/508G02F1/133606G02F1/13362H01L33/405H01L33/40G02F1/133603H01L2933/0083G02F1/133614G02F1/133524
Inventor 任梦昕李群庆张立辉陈墨范守善
Owner TSINGHUA UNIV
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