A new electrode structure for color‐shift reduction in PVA LCD

Kwon, Yong-Hoan; Baek, Jong-In; Kim, Jae Chang; Yoon, Tae–Hoon

doi:10.1080/15980316.2007.9652034

Cited by 9 publications

(6 citation statements)

References 5 publications

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“…Among them, the VA mode has the advantage of the highest contrast ratio because the LCs are aligned vertically in the initial state. However, the dependence of the VA mode on the viewing angle is significant because the phase retardation of the vertically aligned LCs is highly dependent on the angle of incidence [7]. Although various types of multi-domain VA modes have been proposed to reduce the off-axis gamma shift, the off-axis gamma shift problem remains a critical issue.…”

Section: Introductionmentioning

confidence: 98%

Vertical Alignment Liquid Crystal Device With Reduced Off-Axis Gamma Shift

Kim

Choi

Kim

et al. 2013

J. Display Technol.

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We propose a vertical alignment (VA) liquid crystal (LC) device with reduced off-axis gamma shift. We can form a multi-domain structure by simply designing the electrode structure. By applying a different bias voltage to each sub-pixel, we obtained a threshold voltage difference of 2.4 V, without any complex manufacturing process. We confirmed that the off-axis gamma shift can be significantly reduced by the proposed method. We believe that the proposed method can be easily applied to reduce the off-axis gamma shift in vertical alignment LC devices.Index Terms-Gamma shift, liquid crystal (LC), vertical alignment (VA).

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Section: Introductionmentioning

confidence: 98%

Vertical Alignment Liquid Crystal Device With Reduced Off-Axis Gamma Shift

Kim

Choi

Kim

et al. 2013

J. Display Technol.

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“…Among them, the VA mode can provide a superior contrast ratio because the liquid crystal molecules in the initial state are aligned vertically against the substrate. However, viewing angle characteristics of the single domain VA mode is poor because of the asymmetric configuration of the liquid crystal molecules [4,5]. To improve the viewing angle characteristics, the patterned VA (PVA) mode was developed by forming the patterned electrodes at the top and bottom substrates [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Pixel structure for higher optical efficiency in the patterned vertical alignment LC mode

et al. 2012

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“…Among them, VA mode can provide superior contrast ratio because liquid crystals (LCs) in the initial state are aligned vertically against the substrate. However, the single domain VA mode has asymmetric viewing angle characteristic [4,5]. To overcome this problem, multidomain structure of the VA mode has been proposed.…”

Section: Introductionmentioning

confidence: 99%