Reflective Dual Mode Liquid Crystal Display with Dynamic Mode Utilizing the Transition Behavior between the Two Stable States of Its Memory Mode

2011 ◽  
Vol 50 (8) ◽  
pp. 084101 ◽  
Author(s):  
Joong Ha Lee ◽  
Dong Han Song ◽  
Taehyung Kim ◽  
Hun Ki Shin ◽  
Chul Gyu Jhun ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Dynamic Mode ◽  
Stable States ◽  
Dual Mode ◽  
Transition Behavior

Reflective Dual Mode Liquid Crystal Display with Dynamic Mode Utilizing the Transition Behavior between the Two Stable States of Its Memory Mode

2011 ◽  
Vol 50 (8R) ◽  
pp. 084101 ◽  
Author(s):  
Joong Ha Lee ◽  
Dong Han Song ◽  
Taehyung Kim ◽  
Hun Ki Shin ◽  
Chul Gyu Jhun ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Dynamic Mode ◽  
Stable States ◽  
Dual Mode ◽  
Transition Behavior

Bistable nematic liquid crystal device with flexoelectric switching

2006 ◽  
Vol 17 (4) ◽  
pp. 435-463 ◽  
Author(s):  
L. J. CUMMINGS ◽  
G. RICHARDSON
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Display ◽  
Parallel Plates ◽  
Stable States ◽  
Numerical Work ◽  
Potential Applications ◽  
Simplifying Assumptions ◽  
Bistable Device

Motivated generally by potential applications in the liquid crystal display industry [8,35], and specifically by recent experimental, theoretical and numerical work [6,7,13,14,21,25,30,31], we consider a thin film of nematic liquid crystal (NLC), sandwiched between two parallel plates. Under certain simplifying assumptions, laid out in £2, we find that for monostable surfaces (i.e. only a single preferred director anchoring angle at each surface), two optically-distinct, steady, stable (equal energy) configurations of the director are achievable, that is, a bistable device. Moreover, it is found that the stability of both of these steady states may be destroyed by the application of a sufficiently large electric field, and that switching between the two states is possible, via the flexoelectric effect. Such a phenomenon could be used in NLC display devices, to reduce power consumption drastically. Previous theoretical demonstrations of such (switchable) bistable devices have either relied on having bistable bounding surfaces, that is, surfaces at which there are two preferred director orientations at the surface [7,14]; on having special (nonplanar) surface morphology within the cell that allows for two stable states (the zenithal bistable device (ZBD) [4,21], or, in the case of the Nemoptic BiNem technology [11,19], on flow effects and a very carefully applied electric field to effect the switching.

A Single-Cell-Gap Transflective Dual-Mode Liquid Crystal Display

2011 ◽  
Vol 181-182 ◽  
pp. 203-207
Author(s):  
Chao Ping Chen ◽  
Te Chen Chung ◽  
Tean Sen Jen ◽  
Xiao Jun Guo ◽  
Yi Kai Su
Keyword(s):  
Liquid Crystal ◽  
Single Cell ◽  
Liquid Crystal Display ◽  
Single Mode ◽  
Optical Performance ◽  
Dual Mode ◽  
Memory Ability ◽  
Gap Structure

A transflective dual-mode liquid crystal display (LCD) featuring single-cell-gap structure has been proposed in this paper. Unlike transflective single-mode LCDs, dual-mode LCD can work as either monostable transmissive or bistable reflective LCDs in a sense that two different modes of display are unified in one device. We have confirmed that it has not only desirable electro-optical performance but also longtime memory ability.

Liquid crystal display panel fabricated in dual mode

2012 ◽  
Vol 13 (1) ◽  
pp. 17-20 ◽  
Author(s):  
Yaping Wang ◽  
Aiping Mo ◽  
Qingfeng Jiang
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Dual Mode ◽  
Liquid Crystal Display Panel

Transflective Configuration of Dual Mode Liquid Crystal Display for High Contrast Ratio

2009 ◽  
Vol 507 (1) ◽  
pp. 264-272 ◽  
Author(s):  
Joong Ha Lee ◽  
Seong Ryong Lee ◽  
Chul Gyu Jhun ◽  
Tae-Hoon Yoon ◽  
Jae Chang Kim
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Contrast Ratio ◽  
High Contrast ◽  
Dual Mode

Reflective dual-mode liquid crystal display switchable between dynamic and memory modes

2010 ◽  
Vol 97 (13) ◽  
pp. 133510 ◽  
Author(s):  
Joong Ha Lee ◽  
Taehyung Kim ◽  
Hun Ki Shin ◽  
Chul Gyu Jhun ◽  
Soon-Bum Kwon ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Dual Mode

Sistem Kontrol Pengisian Air Otomatis Dengan Dua Sumber Suplai Berbasis Mikrokontroler (ATmega 8535)

2016 ◽  
Vol 1 (2) ◽  
pp. 84 ◽  
Author(s):  
Sumardi Sumardi ◽  
Muhammad Nur Anggoro
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display

Sistem kontrol pengisian air otomatis dengan dua sumber suplai berbasis mikrokontroler merupakan sebuah sistem yang dapat digunakan untuk mengendalikan level air pada sebuah bak penampungan secara otomatis. Bahan dan alat yang digunakan dalam sistem kontrol berupa mikrokontroler ATmega 8535, sensor air, downloader DI-USB AVR ISP V2/DI-USB to Serial TTL, liquid crystal display, transisor, resistor, pompa air, adaptor 12 volt dc, saklar, dan program editor code vision avr. Metode yang digunakan dalam pembuatan sistem kontrol pengisian air otomatis ini adalah melakukan percobaan dan ujicoba peralatan secara langsung. Sistem kontrol ini bekerja dalam dua kondisi yaitu ketika air dalam bak penampungan melewati batas bawah maka bak penampungan akan terisi secara otomatis dan ketika telah mencapai batas atas yang ditentukan maka suplai air ke bak penampungan akan berhenti, selanjutnya ditambah pengaturan dari dua buah sumber air sebagai suplai yang akan bekerja sesuai dengan prioritasnya. Proses tersebut dilakukan oleh sensor bagian input yang berupa sensor air pada masukan sumber air yang kemudian diproses oleh mikrokontroler terprogram. Hasil percobaan menunjukkan sensor air berhasil memberikan logika Low atau High pada keluarannya sebagai fungsinya untuk memberikan sinyal masukan pada port mikrokontrol. Pada kondisi high, sensor air mampu memberikan nilai tegangan 4,89 Volt DC untuk digunakan sebagai masukan mikrokontroler. Dan pada kondisi low, sensor air mampu memberikan nilai tegangan 0,11 Volt dc sebagai masukan mikrokontroler ketika elektroda tehubung dengan common oleh media air. Driver Masukan terbukti dapat digunakan untuk menggendalikan kerja dari motor pompa 220 V AC dan lampu indikator 12 V DC. Hasil yang dari sistem kontrol pengisian air ini adalah terjadinya pengurangan kerugian yang ditimbulkan karena masalah ketersediaan air dan juga mempermudah kegiatan dalam pengendalian ketersediaan air. Kata kunci : Sistem kontrol, pengisan air otomatis, mikrokontroler, sensor air.

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