本研究是藉由二色性染料(Dichroic Dye)之異向吸收效果與強誘電性液晶(Ferroelectric Liquid Crystals)低驅動電壓、快速應答及寬視角的特性，製備在單一偏光片作用下的染料-客主型強誘電性液晶(Dye Guest-Host Ferroelectric Liquid Crystals)之顯示元件，簡稱DGHFLC；以及利用具有異向吸收之二色性染料(Dichroic Dye)摻混於高分子分散強誘電性液晶(Polymer Dispersed Fer-roelectric Liquid Crystal；PDFLC)，製備具有快速應答、低驅動電壓、高亮度且可於單一偏光片下作用的染料客-主型高分子分散強誘電性液晶(Dye Guest-Host Polymer Dispersed Ferroelectric Liquid Crys-tal；DGHPDFLC)。主要目的在於探討染料客主型液晶顯示元件之呈色特性，並分別對DGHFLC及DGHPDFLC之自發性極化值、應答特性、記憶效果、色彩性、心理物理及心理測量或測色學等作探討。

研究結果顯示，在DGHFLC與DGHPDFLC的記憶效果探討中，得知隨著二色性染料摻混濃度的增加，元件的記憶效果亦會顯著的提升。但卻也因二色性染料的摻混使得元件的自發性極化值下降、應答時間增長以及旋轉黏度的增加。

在DGHFLC cell色彩性的測量評估中，得知因染料濃度的增加相對使得明度降低、色彩度提高；同時，試片所呈現出的色相愈接近染料最大吸收波長的顏色。當印加正負電場於試片時，發現在著色態與無著色態間的色差值，會隨著染料濃度的提高而增加；如此一來，便可讓視覺感受愈趨明顯，且因為DGHFLC cell只用了單一偏光片致使整體亮度提升，而達到客主型液晶顯示器的最初設計目的。在DGHPDFLC cell色彩性的測量評估中，得知隨著染料的摻混，無論在無偏光片、單一偏光及正交偏片下，都造成穿透率大幅下降；並且可以了解以心理測量或測色學的評價方式，來評價利用染料異向吸收而呈現單一色彩的DGHPDFLC，較利用心理物理等方法所造成的光學視覺感受來的明顯、易讀。並且由心理測量或測色學的評價，證明DGHPDFLC可在單一偏光片的模式下，可做高亮度、高色差的顯示。

We combined the dichroic dye that has anisotropic absorption with ferroelectric liquid crystal (FLC) that has low threshold voltage, fast response switching, and wide viewing angle to fabricate dye guest-host ferroelectric liquid crystal (DGHFLC) display devices, and then used the DGHFLC mixed with photocurable polymer to manufacture the dye guest host polymer dispersed ferroelectric liquid crystal display devices. These display devices have more excellent protential that high brightness, low threshold voltage, fast response switching etc., and can addressed brightness state and darkness state under single polarizer. The main aim of using FLC is solving the shortcomings of usual commercial display device that low brightness., small viewing angle, and poor readability.

The physical properties of DGHFLC and DGHPDFLC show that memory effect of the device increased with concentration of dichroic dye increasing. The spontaneous polarization of DGHFLC and DGHPDFLC devices decreased with the concentration of dichroic dye increasing. The response time of DGHFLC and DGHPDFLC devices increased with the concentration of dichroic dye increasing. The rotation viscosity of DGHFLC and DGHPDLFC devices increased with the concentration of dichroic dye increasing.

The colors evaluation shows that luminance of device decreased with dye concentration increasing, but chroma difference increased with dye concentration increasing. The color difference between color and colorless increased with dye concentration increasing when applied electric field on the device. The dominant wavelength will approach the maxmun absorption wavelength of dye when the dye concentration increased. So, the vision of device will more and more clear and obvious. In the brightness, the DGHFLC and DGHPDFLC devices can operation under single polarizer. So, the DGHFLC of devices can improve the brightness compare with usual commercial devices.

We sucessed improve the shortcomings of usual commercial display device by using dirchroic dye combind with FLC and photocurable polymer to fabricate the DGHFLC and DGHPDFLC devices. The experiments prove the DGHFLC and DGHPDFLC can appear color state and colorless state under single polarizr, and have high brightness and high color difference.

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