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Research and Developments of Multi-Color Fluorescent Display Devices by Using Light Emitting Diode and Liquid Crystals

利用发光二极管和液晶的多色荧光显示装置的研究与开发

基本信息

批准号：
09650378
负责人：
SATO Susumu
金额：
$ 1.86万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650378/
关键词：
Liquid Crystal Light Emitting Diode Fluorescent Display Color Display

项目摘要

1. Liquid crystal (LC) cells with various thicknesses of LC layers and dye concentrations are prepared by dissolving some fluorescent dyes into mixtures of cholesteric and nematic LCs. Then, fluorescent intensities stimulated by ultraviolet (UV) light are measured and characteristics in complex properties of these cells are studied.2. LC fluorescent devices of which fluorescent layers are formed on the inside surface of the substrates are prepared, and their dependences of fluorescent properties and fluorescent spectra on the applied voltage are measured.3. External voltage dependences of fluorescent intensities and fluorescent spectra in both of the LC cells doped with fluorescent dyes and LC fluorescent devices are measured under the stimulation by the blue or UV-LED and the 1W-fluorescent lamp. Then, light shuttering effects and some properties of electrically controlled fluorescent intensities are studied.4. Relations between fluorescent intensities and fluorescent spectra and applying voltages to the LC cells are measured by composing the UV-LED and UV-fluorescent lamp to the LC cells doped with the fluorescent dyes. Then, fluorescent devices of which fluorescent color can be changed from blue to red or to green are prepared and studied as multi-color fluorescent LC display devices. In addition, their fluorescent yields are improved.5. Fluorescent display devices having colorful properties are composed by stacking several LC cells doped with different fluorescent dyes. Then, their fluorescent properties are measured and relations between applied voltages and fluorescent properties on GTE color coordinates are discussed. Optimum conditions for color changes are obtained, and fluorescent LC cells with excellent properties can be composed.6. The results are examined and the research work is summarized.

1. 通过将一些荧光染料溶解到胆甾型液晶和向列型液晶的混合物中，制备具有不同液晶层厚度和染料浓度的液晶（LC）盒。然后，测量了紫外(UV)光激发的荧光强度，并研究了这些细胞的复杂特性。 2．制备了在基板内表面上形成有荧光层的液晶荧光器件，并测量了它们的荧光特性和荧光光谱对所施加电压的依赖性。 3．在蓝色或UV-LED和1W荧光灯的刺激下，测量了掺杂有荧光染料的LC单元和LC荧光器件中的荧光强度和荧光光谱的外部电压依赖性。然后，研究了光遮断效应和电控荧光强度的一些特性。 4．通过将UV-LED和UV荧光灯组合到掺杂有荧光染料的LC单元上来测量荧光强度和荧光光谱之间的关系以及对LC单元施加的电压。然后，制备并研究了荧光颜色可以从蓝色变为红色或变为绿色的荧光装置作为多色荧光LC显示装置。此外，它们的荧光产率也得到提高。5．具有色彩特性的荧光显示装置是由若干掺杂有不同荧光染料的液晶盒堆叠而成。然后，测量它们的荧光特性，并讨论施加电压和 GTE 颜色坐标上的荧光特性之间的关系。获得了最佳的颜色变化条件，可以组成性能优异的荧光液晶盒。 6．对结果进行了检验并对研究工作进行了总结。