52.2: <i>Invited Paper</i>: Color Sequential LCD Based on OCB with an LED Backlight

Yamada, Fumiaki; Nakamura, Hajime; Sakaguchi, Y.; Taira, Yoichi

doi:10.1889/1.1832876

Cited by 21 publications

(7 citation statements)

References 5 publications

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“…An optically compensated bend (OCB) LCD also shows a fast gray-to-gray response. [13][14][15] However, for conventional nematic devices that include TBA and OCB, the turn-off switching at low temperature is far from satisfactory, because it is governed by the slow relaxation of the liquid crystal alignment.…”

Section: Introductionmentioning

confidence: 99%

Novel super fast response vertical alignment‐liquid crystal display with extremely wide temperature range

et al. 2014

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-We have developed a novel super fast response (SFR) thin-film transistor liquid crystal display (TFT-LCD) with an extremely wide temperature range. Nematic liquid crystal molecules with positive dielectric anisotropy are vertically aligned initially. Any gray-to-gray response is forcibly controlled by applying an electric field. Response times of the SFR TFT-LCD are over several times shorter than those of conventional LCDs such as vertical alignment or in-plane switching LCDs.

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Section: Introductionmentioning

confidence: 99%

Novel super fast response vertical alignment‐liquid crystal display with extremely wide temperature range

et al. 2014

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“…Polarization conversion basically shares the same mechanism as polarization recycling but the light is conceptually fully polarized with single pass through the conversion module, as shown in Fig. 1 LED is as fast as a few tens nano second and has been considered as the best candidate so far [13,14], and the major fast switch liquid crystal mode are OCB [15,16] and blue phase LC [17,18] etc.…”

Section: Color Separation and Polarization Scheme For Lcd Backlightmentioning

confidence: 99%

Strategy for developing high efficiency backlight module for LCD

et al. 2012

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The major efficiency loss in current liquid crystal displays(LCD) are the absorption in polarizers and color filter, and both can be resolved with decent backlight design which takes light polarization and color separation into consideration. Those improvement schemes on the backlight normally will not trade off the image quality readily achieved in the commercial LCD. Both polarization and color separation schemes for the backlight are reviewed with categorization on the basic concept, followed by the proposal of possible combinations for both direct lit and edge lit configuration with the consideration on the availability of associated components. Two total solutions, including polarization conversion module for LED and pixelized backlight with RGB LED for direct lit and edge lit respectively, are given with demonstration of preliminary result achieved so far as the efficiency improvement schemes for LCD backlight.

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“…Fast response optical devices are important for many applications. For display applications, fast response liquid crystal displays (LCDs) play a key role in field sequential technology that has been widely used to improve image quality for both 2D and 3D displays. Constraints on the technology used for fast response are as follows: the voltage is limited to about 5 V, the viewing angle must be excellent, and the contrast must be high and uniform.…”

Section: Introductionmentioning

confidence: 99%

Low voltage fast response display using dual π‐cells with quarter‐wave thickness

2014

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In this paper, a design for a fast response display consisting of dual π‐cells is investigated. The thickness of each liquid crystal cell layer is only half of a single LC cell device with the same retardation change, which results in about one quarter of the response time for a single π‐cell device. While this result is obviously anticipated, an additional advantage is that a good viewing angle can be achieved by using negative C plates, which allows a lower cost device with a more uniform black state across the area of the display than the case of a single cell compensated by a discotic compensator. We also propose a solution to solve parallax issue from two‐layer structure of liquid crystal cell, and it opens a window of opportunity for a device with two‐layer structure.

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52.2: Invited Paper: Color Sequential LCD Based on OCB with an LED Backlight

Cited by 21 publications

References 5 publications

Novel super fast response vertical alignment‐liquid crystal display with extremely wide temperature range

Novel super fast response vertical alignment‐liquid crystal display with extremely wide temperature range

Strategy for developing high efficiency backlight module for LCD

Low voltage fast response display using dual π‐cells with quarter‐wave thickness

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