| Summary: | 碩士 === 國立交通大學 === 材料科學與工程系 === 88 === This thesis is focus on gel-glass liquid crystal dispersed (GDLC) by amino-silicon materials sol-gel process.
Following silicon alkoxides have different function groups after their hydrolysis, condensation will have different gelation time, refractive index, resistivity. Owing to refractive index induces contrast ratio that gel-glass materials need to match E7 refractive index for enhance electro-optical performance. The non-active function groups CH3-, C6H5- quantities will impact gelations time, gel-glass structure and response voltage.
Cells were made by spin coating, capillary principle, droplets dispersed. Showing spin coating, capillary principle have poor electro-optical performance. 3-(Diethoxymethoxysilyl) propylamine composition offered the gel-glass matrix better flexibility & lower resistivity. Ttanium ethoxide was used successfully to adjust the refractive index and improve the contrast ratio (GDLC-17 C.R.=22.5) .
From cell optical microscope structure: the stronger, uniformer structure relative better electro-optical performance (Fig 4-4-1 c). GDLC system matrix are controlled by raw materials compositions, active groups, non-active groups, temperature, humidity…etc.. Here focus materials and active, non-active groups composition that high-line excellent cell gel-glass structure and excellent electro-optical performance.
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