Vertical field switching for blue-phase liquid crystal devices

Cheng, Hongye; Yan, Jin; Ishinabe, Takahiro; Wu, Shin Tson

doi:10.1063/1.3604011

Cited by 127 publications

(99 citation statements)

References 12 publications

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“…To achieve this goal, both device structures and BPLC materials have been investigated extensively. From device structure viewpoint, two major approaches have been developed: (1) implementing protrusion electrodes so that the fringing field can penetrate deeply into the LC bulk, [17][18][19] and (2) vertical field switching (VFS) 20 …”

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A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal

Chen¹,

Xu²,

Wu³

et al. 2013

Applied Physics Letters

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107

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We report a polymer-stabilized blue phase liquid crystal (BPLC) whose Kerr constant is about 2.2× larger than previous record. When filled in a 3.2-μm-thick vertical field switching cell, the on-state voltage is merely 8.4 V (at λ = 514 nm) while keeping submillisecond response time and negligible hysteresis (<1%) at the room temperature. These results imply that the dawn of BPLC era for high speed display and photonic devices has finally arrived.

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“…20 A linearly polarized Argon ion laser (k ¼ 457 nm and k ¼ 514 nm) and a He-Ne laser (k ¼ 633 nm) were used as probing beams. In order to acquire phase retardation, the laser beam was incident on the VFS cell at 70 oblique angle.…”

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confidence: 99%

A low voltage and submillisecond-response polymer-stabilized blue phase liquid crystal

Chen¹,

Xu²,

Wu³

et al. 2013

Applied Physics Letters

Self Cite

134

107

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“…To reduce such high operating voltage, several modified structures of IPS electrodes, such as protrusion electrodes [44], wall-shaped electrodes [45], double-penetrating fringe fields [38], and corrugated electrodes [36], are developed. Also, Kim et al and Wu et al also proposed vertical field switching (VFS), whose electric field is in longitudinal direction and uniform, in BP-LCs [40,46,47]. However, although BP-LCs were discovered a 100 years ago and were also improved technically, they were almost failed to be really applied for fabricating practical devices due to the described instinct shortages.…”

Section: Emerging Technologymentioning

confidence: 99%

Liquid Crystal Display—Present Status and Emerging Technology

Cheng

2014

Topics in Applied Physics

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Nowadays, in your daily lives, the applications of LCs, such as LCD TVs, computer/laptop monitors, mobile phones, navigators, digital cameras, and so on, are widely used worldwide. Even, wherever you are whatever you do, you can take your electronics out of your pocket to check your e-mails, listen to music, watch movies, find your way, and so many others. LCDs provide high performance in regard to the weight, volume, contrast ratio, viewing angle, low power consumption, etc. That's why the high-quality applications of LCDs are indispensable and paid much attention by scientists and electronics industries in the recent decade. Undoubtedly, LCDs have acted as a leader in the field of flat panel displays, in not only small-sized displays, but also large-sized ones. Refer to cathode ray tube (CRT) monitors; LCDs have almost completely replaced CRT monitors in the display market because of their bulky and high power consumption, despite their good response time, viewing angle, image quality. However, in addition to the present status of LCD applications, some emerging technologies, such as wide viewing angle displays, fast response displays, blue phase LCDs, flexible displays, 3D displays, high resolution displays, in-cell touch panel, electronic papers, tablets, etc., have also attracted much attention. In this chapter, the introductions of the present status of LCD industry, as well as the emerging technology for improving the performances of LCDs will be given. Liquid Crystal Display ModesRegarding the commercial products of LCDs [1-3], their operating principles for modulating light intensity and/or light polarization include polarization

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“…There is no viewing angle problem when a BPLCD is driven by an electric field, so there has been a shift in attention from a focus on in-plane-switching (IPS) to vertical-field-switching (VFS) [5][6][7][8][9][10]. Because there is no brightness by normal incident light, a VFS BPLCD needs an oblique incident light source that their configurations are complicated and costly in real manufacturing.…”

Section: Introductionmentioning

confidence: 99%