研究目的
To investigate the effectiveness of bonding spacers in suppressing the deformation of plastic substrates in flexible LCDs to achieve a small radius of curvature and high image quality.
研究成果
The study successfully demonstrated that lattice-shaped polymer spacers are effective in suppressing the deformation of plastic substrates in flexible LCDs, achieving a small radius of curvature less than 2 mm and maintaining high image quality in bending states. This advancement contributes to the development of foldable LCDs with potential applications in various display technologies.
研究不足
The study focuses on the use of ultra-thin polyimide substrates and bonding polymer spacers, which may not be applicable to all types of flexible displays. The effectiveness of lattice-shaped polymer spacers in suppressing deformation is highlighted, but other spacer designs may require further investigation.
1：Experimental Design and Method Selection:
The study involved the development of foldable LCDs using ultra-thin polyimide substrates and bonding polymer spacers. The methodology included calculating bending strain, measuring cell thickness in bending and non-bending states, and fabricating flexible twisted nematic (TN) mode LCDs.
2：Sample Selection and Data Sources:
The study used ultra-thin polyimide substrates and various shapes of polymer spacers (columnar and lattice-shaped) for the experiments.
3：List of Experimental Equipment and Materials:
Spectroscopic ellipsometer (M-2000, J. A. Woolam), polyamic acid solution (ECRIOSTM VICT-Bnp), alignment layer (AL1254), LC material (TD-5043XX), and monomer material.
4：Experimental Procedures and Operational Workflow:
The fabrication process included coating polyamic acid solution on glass plates, applying alignment layers, conducting rubbing treatment, sealing substrates, injecting LC and monomer mixture, UV irradiation through a photomask, and debonding LC devices from glass plates.
5：Data Analysis Methods:
The cell thickness was obtained by numerical fitting method from phase retardation measurements in bending and non-bending states.
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