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5 results on '"Active matrix driving"'

1. Study of polymer-stabilized cholesteric liquid crystals for reflective displays in active matrix driving

Author

Kuan-Wu Lin, Jhih-Yi Lu, Heng-Yi Tseng, Chien-Yi Lin, Liang Ying Huang, Yi-Ling Lin, Huan-Hsuan Chang, and Tsung-Hsien Lin

Subjects
Polymer-stabilized cholesteric liquid crystals (PSCLCs), reflective displays, active matrix driving, Computer engineering. Computer hardware, TK7885-7895
Abstract

This paper attempts to explore the feasibility of using cholesteric liquid crystals (CLCs) for reflective displays in active matrix (AM) driving. The study focuses on reverse mode polymer-stabilized cholesteric liquid crystals (PSCLCs) to overcome the inherent bistability of CLCs and achieve faster response times for switching between bright and dark states. Key parameters such as cell gap, monomer concentration, polymerization temperature, and different monomer types and liquid crystal hosts are systematically investigated to optimize the electro-optical properties of the liquid crystals for active matrix driving. The research demonstrates that PSCLCs can operate within a 15 V driving voltage range while maintaining a good bright-dark state contrast ratio (>10) and a response time of less than 42 ms. This suggests significant potential for their application in dynamic reflective display technologies.

Published
2024
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4. The MEMOLED: Active addressing with passive driving

Author

Asadi, K., Blom, P.W.M., and Leeuw, D.M. de

Subjects
Ferroelectricity, organic compound, Light, Polymers, Light-emitting diodes, polymer, Electrical Equipment and Supplies, Ferroelectric memory, HOL - Holst, Refresh rate, chemistry, Light emission, memory, electrical equipment, non-volatile switch, Organic Chemicals, Technological solution, volatilization, TS - Technical Sciences, Industrial Innovation, High power consumption, Organic electronics, Active matrix driving, Passive matrix, article, Mechatronics, Mechanics & Materials, Large displays, Non-volatile, Ferroelectric films, Ferroelectric thin films, Diodes, Light emitting diodes, Organic light emitting diodes (OLED), Programmability
Abstract

Passive or active matrix driving schemes in large displays are prone to high power consumption and cost, respectively. For signage applications such as large out-door displays with low refresh rates there is as yet no technological solution. Here the MEMOLED solution, an organic light-emitting diode with an integrated ferroelectric memory, is presented. Programmability of the integrated memory allows active addressing of the OLED in a passive matrix geometry. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Published
2011

5. The MEMOLED: Active addressing with passive driving

Subjects
Ferroelectricity, organic compound, Light, Polymers, Light-emitting diodes, polymer, Electrical Equipment and Supplies, Ferroelectric memory, HOL - Holst, Refresh rate, chemistry, Light emission, memory, electrical equipment, non-volatile switch, Organic Chemicals, Technological solution, volatilization, TS - Technical Sciences, Industrial Innovation, High power consumption, Organic electronics, Active matrix driving, Passive matrix, article, Large displays, Mechanics & Materials, Non-volatile, Ferroelectric films, Ferroelectric thin films, Diodes, Mechatronics, Light emitting diodes, Organic light emitting diodes (OLED), Programmability
Abstract

Passive or active matrix driving schemes in large displays are prone to high power consumption and cost, respectively. For signage applications such as large out-door displays with low refresh rates there is as yet no technological solution. Here the MEMOLED solution, an organic light-emitting diode with an integrated ferroelectric memory, is presented. Programmability of the integrated memory allows active addressing of the OLED in a passive matrix geometry. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Published
2011

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