34‐2: <i>Invited Paper</i>: Novel Four‐Transistor Pixel Circuit Using Source‐Follower Structure for Field‐Sequential‐Color Blue‐Phase Liquid Crystal Displays

Hung, Ching Hsia; Hsieh, Hsiang Yuan; Lin, Yaping; Yu, Fang Cheng; Tsao, T.; Lü, Min; Tseng, Bo Shiang; Hung, Ching Lang; Huang, Pu Jung; Chen, Yi Ting; Hsieh, Chia Ting; Lin, Ching Hsiang; Lan, Yi Fen; Yen, Ze Yu; Chuang, Chin Tang; Ozawa, Tokuro; Tsai, Cheng Yeh; Kuo, Chia Wei; Lin, Ching Huan; Chen, Po Hsun; Lin, Chih Lung; Sugiura, Norío

doi:10.1002/sdtp.11660

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…At last, we apply the intercepting transmittance method to some proposed electrode structures, such as S-shape protrusion (I) [4], penetration (II) [24,71,72] and insulating protrusion with high dielectric constant (III) [21,22] electrode structures. In order to make a fair comparison, the parameters of BPLC and electrodes are reset compared with the referenced electrode structures.…”

Section: Application In Some Proposed Electrode Structuresmentioning

confidence: 99%

Reduced off-axis gamma shift of liquid crystal display by intercepting transmittance method

Guo

et al. 2020

J. Phys. D: Appl. Phys.

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Generally, the brightness and color of one image on a large-area flat panel display are different when people watch a display image under different viewing angles. The gamma shift is used to evaluate the difference of electro-optical performances under different viewing angles, namely the gray-scale display distortion. In order to reduce the gamma shift under the oblique viewing angle, the intercepting transmittance method is proposed and illustrated based on the single-domain in-plane switching blue-phase liquid crystal display (IPS-BPLCD). The results show that the off-axis image distortion index (the quantitative evaluation index of gamma shift) can be reduced by ~72% if the transmittance ratio reduces from 100% to 80% for the IPS-BPLCD with a straight electrode structure. Moreover, the zigzag electrode structure is used as the reference to illustrate the merits of the proposed method. As a result, the operating voltage of the IPS-BPLCD can be reduced by >20%, and the off-axis image distortion index is reduced by ~47% compared with the zigzag electrode structure. Besides this, the effects of the proposed method on contrast ratio, operating voltage and color difference of IPS-BPLCD are investigated as well. In fact, the proposed method is also useful for other LCD modes and electro-optical devices to achieve wide and uniform viewing angles.

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Section: Application In Some Proposed Electrode Structuresmentioning

confidence: 99%

Reduced off-axis gamma shift of liquid crystal display by intercepting transmittance method

Guo

et al. 2020

J. Phys. D: Appl. Phys.

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“…Although PS-BPLC is potentially a strong candidate for next generation displays, its relatively high operation voltage and slow capacitance charging time need further improvement. Recently, with newly developed materials [15,45,46], optimized protrusion electrodes [47][48][49][50][51], and bootstrapping driving scheme [50][51][52][53], AU Optronics has demonstrated a 12″ FSC BP LCD prototype [51].…”

Section: Review On Polymer-stabilized Short-pitch Cholesteric Liquid mentioning

confidence: 99%

“…The charging issue can be overcome by special driving circuit design, for instance bootstrapping driving method [52,53]. On the other hand, optimizing device structure can also reduce operation voltage, such as protrusion electrodes [47][48][49][50][51], corrugated electrodes [103] and double-penetrating fringe fields [104]. Recently, an optimized BP LCD with LC mixture JC-BP08 and triangular protrusion electrode structure has been reported [15].…”

Section: Operation Voltagementioning

confidence: 99%

Review on polymer-stabilized short-pitch cholesteric liquid crystal displays

Tan

Lee

Gou

et al. 2017

J. Phys. D: Appl. Phys.

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Submillisecond response times and low operation voltage are critical to next generation liquid crystal display and photonic devices. In this paper, we review the recent progress of three fastresponse short-pitch cholesteric liquid crystal modes: blue phase (BP), uniform standing helix (USH), and uniform lying helix (ULH). This review starts with a brief introduction of device structures and working principles, and then highlights two competing electro-optical effects: dielectric effect and flexoelectric effect. Next, we compare their electro-optical behaviors, response time, temperature dependence, and contrast ratio. Based on our established simulation model, we are able to optimize the phase compensation scheme for improving the viewing angle and gamma shift of USH and ULH modes. Finally, we analyze some major challenges, which remain to be overcome before the widespread applications of these liquid crystal devices can be realized.

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“…This includes new electrode designs [8][9][10][11][12][13][14], vertical field effect [15] and developing new materials with large Kerr constant [16][17]. Among these approaches, new electrode designs have been shown to be a very effective and feasible way of lowering the operation voltage and increasing the transmission of PSBP-LCD [18]. In particular, despite its complicated structure, new electrode design based on corrugated electrode [10] can offer relatively high transmission (~85%) and low operation voltage (10V) compared to most other designs due to its fairly strong and uniform horizontal electric field distribution along the whole cell gap.…”

Section: Introductionmentioning

confidence: 99%

P‐150: Low‐voltage High‐transmittance Blue‐Phase Liquid Crystal Displays using Three Dimensional Corrugated Electrode Structure

Chan

Choi

2019

Symp Digest of Tech Papers

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We propose new electrode designs for the corrugated Polymer‐Stabilized Blue‐Phase Liquid Crystal Displays (PSBP‐LCDs). In these new designs, the electrode structure varies not only in x/z‐axis directions, but also in the y‐axis (transverse) direction. In this way, an additional electric field is created in transverse y‐axis direction which is found to help improve the transmission of the dead zones that exist in the previously proposed corrugate PSBP‐LCD structure. By using these new structures, it is possible to obtain > 90% in transmission with low operation voltage of about 10V.

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34‐2: Invited Paper: Novel Four‐Transistor Pixel Circuit Using Source‐Follower Structure for Field‐Sequential‐Color Blue‐Phase Liquid Crystal Displays

Cited by 11 publications

References 4 publications

Reduced off-axis gamma shift of liquid crystal display by intercepting transmittance method

Reduced off-axis gamma shift of liquid crystal display by intercepting transmittance method

Review on polymer-stabilized short-pitch cholesteric liquid crystal displays

P‐150: Low‐voltage High‐transmittance Blue‐Phase Liquid Crystal Displays using Three Dimensional Corrugated Electrode Structure

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