LP‐G: <i>Late‐News Poster:</i> Hybrid Switching Mode for Wide‐Viewing‐Angle TFT‐LCDs

Shin, Hong-Jik; Lee, H.‐C.; Park, J.‐J.; Kwon, Soon Bum

doi:10.1889/1.1833862

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…Figure 4 shows the simulated electro-optic characteristics of the proposed mode. The simulation was performed by Techwiz LCD (Sanayi System Co.) on the basis of the 2 X 2 extended Jones matrix method as a preferred optical calculation method [8]. Two polarizers are set to be crossed with each other and the cell gap is 3.5 μm.…”

Section: Acd Modementioning

confidence: 99%

P‐198: Azimuthally Continuous Nematic Domain Mode Using Electrode Structure with Circular Slit

Bae

Gwag

Han

et al. 2008

Symp Digest of Tech Papers

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We proposed azimuthally continuous nematic domain (ACD) mode characterized by a cone‐like‐ field of patterned electrode with a circular slit. Such an electrode structure avoids the domain defect induced in a turn of chevron type electrode of patterned vertical aligned nematic (PVA) mode. Consequently, this ACD mode has wider viewing and higher transmittance with maintaining the merits of PVA mode. Therefore, we expect that this proposed mode will be applied to various liquid crystal displays.

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Section: Acd Modementioning

confidence: 99%

P‐198: Azimuthally Continuous Nematic Domain Mode Using Electrode Structure with Circular Slit

Bae

Gwag

Han

et al. 2008

Symp Digest of Tech Papers

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“…Lee et al 7 proposed the use of top and bottom grid electrodes to introduce a "four-domain" switching structure. Shin et al 8 proposed the use of common electrodes on the opposite sides of an LC cell to enhance the transmission. Kim et al 9 proposed the use of non-straight electrodes so that there was a "two-domain"-like structure 10 upon switching.…”

Section: Introductionmentioning

confidence: 99%

Comb‐on‐plane switching electrodes for liquid‐crystal displays

Meng¹,

Kwok²,

Wong³

2000

J Soc Info Display

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— Although the common twisted‐nematic liquid‐crystal displays (TN‐LCD) has excellent contrast and low color dispersion, it suffers from small viewing angle when driven into the homeotropic state. Among the many techniques proposed, in‐plane switching (IPS) has been quite effective in improving viewing angle. However, there may be difficulty in adopting conventional IPS to higher‐definition displays because it suffers from limited storage capacitance and reduced transmittance. A new comb‐on‐plane switching (COPS) electrode design is proposed. Compared to conventional IPS, COPS allows for lower switching voltage and offers advantages including naturally scalable storage capacitance, wide viewing angle with TN‐like high transmittance, and low color dispersion.

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Electrically controlled director slippage over a photosensitive aligning surface; in-plane sliding mode

Andrienko¹,

Barbet²,

Bormann³

et al. 2000

Liquid Crystals

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We have studied the electro-optical characteristics of a homogeneously aligned nematic liquid crystal (LC) with weak planar anchoring of the director at the bounding substrates. By using the in-plane switching (IPS) of the LC which is achieved by an in-plane electric eld, the driving voltage was con rmed to be far less than that of the conventional IPS mode in which both substrates possess strong anchoring characteristics. Moreover, because of the absence of strong subsurface director deformations, the cell could operate optically in the Mauguin regime. Using these features we propose a new type of LC switching mode-in-plane sliding (IPSL) mode. We have realized this mode in a LC cell comprising one reference substrate with strong director anchoring and one substrate covered with photoaligning material with weak anchoring. In order to clarify the switching process, we derived a simpli ed expression for the threshold voltage on the assumption of uniformity of the in-plane electric eld. For the dynamical response of the LC to the in-plane electric eld, the switching on and o relaxation times of the IPSL mode were found to be longer than for the traditional IPS mode. However, we have proposed an optimized cell geometry for the IPSL mode with a response time comparable to that of the IPS mode.

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LP‐G: Late‐News Poster: Hybrid Switching Mode for Wide‐Viewing‐Angle TFT‐LCDs

Abstract: This paper reports switching mode for viewing angle TFT-LCDS.

Cited by 4 publications

References 2 publications

P‐198: Azimuthally Continuous Nematic Domain Mode Using Electrode Structure with Circular Slit

P‐198: Azimuthally Continuous Nematic Domain Mode Using Electrode Structure with Circular Slit

Comb‐on‐plane switching electrodes for liquid‐crystal displays

Electrically controlled director slippage over a photosensitive aligning surface; in-plane sliding mode

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