Dye and liquid crystal co-doped light source device-based tunable method

A device and light source technology, applied in the field of optoelectronic devices, can solve problems such as high cost, complex structure, and large volume, and achieve the effects of high integration, high brightness, and small device volume

Inactive Publication Date: 2011-06-22
SHENYANG LIGONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This display method requires the support of complex optical and mechanical devices, which is not only large in size and complex in structure, but also very expensive

Method used

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  • Dye and liquid crystal co-doped light source device-based tunable method
  • Dye and liquid crystal co-doped light source device-based tunable method

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Experimental program
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Embodiment Construction

[0017] figure 1 It is a schematic diagram of the structure of the light source device co-doped with dye and chiral liquid crystal. The alignment films 3 and 5 are spin-coated on the glass substrate 4 and the glass substrate 7 coated with the IPS electrodes 6 and cured at a high temperature, followed by rubbing alignment treatment to bond the two glass substrates. When bonding, make the rubbing orientation antiparallel, and spray the spacer to control the thickness of the liquid crystal cell to about tens of microns. Mix chiral liquid crystal 1 and dye 2 evenly in a certain proportion, heat the mixed material to slightly higher than the isotropic phase temperature of liquid crystal, inject it into the gap between two glass substrates by capillary action, and then slowly cool down to room temperature.

[0018] When a certain band of laser light is irradiated into the device, random scattering and optical feedback amplification will occur in the device. When the excitation laser...

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Abstract

The invention discloses a dye and liquid crystal co-doped light source device-based novel tunable method. The method comprises the following steps of: performing orientation treatment on in-plane switching (IPS) glass base plates, wherein the friction direction of upper and lower glass base plates is antiparallel to a manufacturing liquid crystal box; uniformly mixing chiral liquid crystal and dye according to the proportion, heating until an isotropic phase is formed, and injecting into the liquid crystal box under the capillary action; and exciting the device by using laser of a certain wave band, applying an alternating current electric field to an IPS electrode, and allowing the light source of the device to perform wavelength tuning in the wave band of visible light by changing an additive electric field. The method has the advantages that: 1, the device has a tiny volume and high integrated level; 2, the luminous mechanism of the light source device is multiple scattering of random laser, so that monochromaticity of the light source and the luminance are high; and 3, the luminous wavelength of the light source device can be continuously tuned under the action of the electric field.

Description

Technical field: [0001] The invention belongs to the technical field of optoelectronic devices, and relates to a wavelength tuning method of a novel light source device, in particular to a light source device structure co-doped with a dye and a chiral liquid crystal and a technology for wavelength tuning of the device through changes in an additional electric field. Background technique: [0002] LED is a very good light source for current application prospects. Its biggest advantage is energy saving, but its preparation technology is more complicated, and the materials and processes of LEDs of different colors are all different. Low consumption, and very simple preparation, the device can also achieve effective control of laser emission parameters (threshold, polarization, directionality, color, etc.) through changes in the external environment (electric field, temperature, etc.). [0003] In 2004, Xianyu et al. fabricated a cholesteric liquid crystal device, and studied th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/139
Inventor 乌日娜岱钦徐送宁
Owner SHENYANG LIGONG UNIV
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