9.3: 32ʺ WXGA LCD TV using OCB Mode, Low Temperature p-Si TFT and Blinking Backlight Technology

Nishiyama, Kazuhiro; Okita, Mitsutaka; Kawaguchi, Seiji; Teranishi, Kentaro; Takamatsu, Ryujiro

doi:10.1889/1.2036250

Cited by 34 publications

(24 citation statements)

References 8 publications

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“…Color sequential LCDs (liquid crystal displays) produce better quality picture [9][10][11], but they need fast operating materials, which can be ensured only by the high birefringence LCs with low viscosity, in combination with a small gap [11].…”

Section: Applications Of High Birefringence Liquid Crystals (Lcs)mentioning

confidence: 99%

High Birefringence Liquid Crystals

2013

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Liquid crystals, compounds and mixtures with positive dielectric anisotropies are reviewed. The mesogenic properties and physical chemical properties (viscosity, birefringence, refractive indices, dielectric anisotropy and elastic constants) of compounds being cyano, fluoro, isothiocyanato derivatives of biphenyl, terphenyl, quaterphenyl, tolane, phenyl tolane, phenyl ethynyl tolane, and biphenyl tolane are compared. The question of how to obtain liquid crystal with a broad range of nematic phases is discussed in detail. Influence of lateral substituent of different kinds of mesogenic and physicochemical properties is presented (demonstrated). Examples of mixtures with birefringence ∆n in the range of 0.2-0.5 are given.

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Section: Applications Of High Birefringence Liquid Crystals (Lcs)mentioning

confidence: 99%

High Birefringence Liquid Crystals

2013

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“…1) together with the slowpursuit nature of the HVS, LCD architects have devised various "eye-bleaching" techniques such as black-frame insertion (BFI), backlight flashing/blinking, and backlight scanning. [7][8][9][10] In fact, although the response time may approach zero in future LCDs, the motion-blur artifact will continue to exist as long as the LCD panels display every image in the scan-and-hold nature. The aforementioned "fixes" attempt to re-create the impulse-type image display of CRT monitors in the LCD panels so that the afterimages in an observer's eyes are eliminated on a per frame basis.…”

Section: Introductionmentioning

confidence: 99%

White‐LED backlight control for motion‐blur reduction and power minimization in large LCD TVs

Lee¹,

Patel²,

Pedram³

2009

J Soc Info Display

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Abstract— A 1‐D LED‐backlight‐scanning technique and a 2‐D local‐dimming technique for large LCD TVs are presented. These techniques not only reduce the motion‐blur artifacts by means of impulse representation of images in video, but also increase the static contrast ratio by means of local dimming in the image(s). Both techniques exploit a unique feature of an LED backlight in large LCD TVs in which the whole panel is divided into a pre‐defined number of regions such that the luminance in each region is independently controllable. The proposed techniques are implemented in a Xilinx FPGA and demonstrated on a Samsung 40‐in. LCD TV. Measurement results show that the proposed techniques significantly reduce the motion‐blur artifacts, enhance the static contrast ratio by about 3×, and reduce the power consumption by 10% on average.

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“…Fast response time is particularly important for color-sequential liquid crystal displays (LCDs) using a blinking backlight [6] or primary color (RGB) light emitting diodes (LEDs) [7,8]. For these devices, high Dn improves response time through cell gap (d) reduction.…”

Section: Introductionmentioning

confidence: 99%

Physical Properties of Laterally Fluorinated Isothiocyanato Phenyl-tolane Single Liquid Crystals Components and Mixtures

Gauza

Parish

et al. 2008

Molecular Crystals and Liquid Crystals

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We have designed, synthesized, and evaluated the physical properties of some high birefringence (Dn) isothiocyanato phenyl-tolane liquid crystals. These compounds exhibit a Dn ' 0.48-0.52 at room temperature and wavelength k ¼ 633 nm. Laterally substituted short alkyl chains and fluorine atom both eliminate smectic phase formation and lower the melting temperature. Both the moderate melting temperature and very high clearing temperature make those compounds attractive for eutectic mixture formulation. Examples of the mixtures containing the described components are presented.

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9.3: 32ʺ WXGA LCD TV using OCB Mode, Low Temperature p-Si TFT and Blinking Backlight Technology

Cited by 34 publications

References 8 publications

High Birefringence Liquid Crystals

High Birefringence Liquid Crystals

White‐LED backlight control for motion‐blur reduction and power minimization in large LCD TVs

Physical Properties of Laterally Fluorinated Isothiocyanato Phenyl-tolane Single Liquid Crystals Components and Mixtures

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