15.2: <i>Invited Paper:</i> Development of High Quality LCDTV

Shigeta, Mitsuhiro; Fukuoka, Hirofumi

doi:10.1889/1.1821391

Cited by 9 publications

(8 citation statements)

References 4 publications

(2 reference statements)

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“…Optical characteristics of TFT-LCDs depend significantly on panel temperature. [1][2][3] For instance, the rotational viscosity of liquid crystals increases at low temperature, leading to slow response time and motion blurring. Ambient conditions and the internal backlight cause the LCD-panel temperature to change.…”

Section: Introductionmentioning

confidence: 99%

Thermally adaptive response‐time compensation for LCDs

Lee¹,

Moon²,

Kim³

et al. 2008

J Soc Info Display

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Abstract— This paper presents thermally adaptive driving (TAD) technology for response‐time compensation (RTC) of an LCD with an integrated sensor. The TAD system is comprised of an analog sensor, an analog sensor signal conditioning, and a digital feedback algorithm. The integrated thermal sensor provides accurate temperature measurement of the liquid‐crystal layer. The TAD controller has an eight‐step look‐up‐table (LUT) and compensates response time based on the panel temperature. The TAD system reduces response time by nearly 34% over the temperature range 0–60°C. This paper also presents a thermal sensor which has been integrated onto an LCD. The sensor uses metal (Mo/Al) film as a temperature detection layer, and its fabrication requires no manufacturing process changes. The sensor shows very good linearity, sensitivity, and reliability.

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Section: Introductionmentioning

confidence: 99%

Thermally adaptive response‐time compensation for LCDs

Lee¹,

Moon²,

Kim³

et al. 2008

J Soc Info Display

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“…Basically a pursuit camera system is used to emulate human visual system in measuring MPRT values [1]. Up to now, several analytical methods especially for LCDs were proposed to represent the actually perceived motion blurs more closely on the same basis of MPRT measurement [2][3][4][5]. The blur edge time (BET) and the perceived blur edge time (PBET) method were two major analytical methods for MPRT and we believe the BET method is more suitable to represent the actually perceived motion blur characteristics of displays based on the our perception test results [6].…”

Section: Introductionmentioning

confidence: 99%

P‐83: The Correlation of MPRT and Moving Picture Resolution with Actually Perceived Moving Image Qualities

Baek¹,

Yoon²,

Ji-Young³

et al. 2008

Symp Digest of Tech Papers

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The motion picture response time (MPRT) methods have been widely used to evaluate the degree of motion blurs in display devices such as liquid crystal displays (LCDs) and plasma display panels (PDPs). Recently, APDC (Advanced PDP development center Corporation) announced the moving picture resolution method to represent the moving image quality of FPDs by using a resolving power as a measure. However, there are some differences in evaluation results of these two methods for same display devices. In this study, we measured the moving picture resolutions of five different FPDs which have different MPRT values and compared these results with actually perceived moving image qualities. The results show that the MPRT has higher correlation with actually perceived moving image qualities than the moving picture resolution method.

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“…Numerous studies have evaluated motion artifacts and methods to alleviate them, particularly the motion blur on liquid-crystal displays (LCDs). [1][2][3][4] To expressly define motion blur, the gray-scale response time of the intermediate region of a liquid crystal and the occurrence of blur caused by hold-type displays must be considered. The liquid-crystal response time (LCRT) generally used to express LCD motion blur perceived by humans does not include these factors.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of liquid‐crystal‐display motion blur with moving‐picture response time and human perception

Someya¹,

Sugiura²

2007

J Soc Info Display

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Abstract— The moving‐picture response time (MPRT) for measuring liquid‐crystal‐display (LCD) motion blur was studied by several organizations in 2001. To determine the LCD motion blur that humans perceive, subjective evaluation experiments using the method of adjustment was conducted to find a strong correlation between perceived motion blur and extended blurred edge time (EBET) of the MPRT measurements. MPRT thus clearly indicates the degree of which humans perceive motion blur.

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15.2: Invited Paper: Development of High Quality LCDTV

Cited by 9 publications

References 4 publications

Thermally adaptive response‐time compensation for LCDs

Thermally adaptive response‐time compensation for LCDs

P‐83: The Correlation of MPRT and Moving Picture Resolution with Actually Perceived Moving Image Qualities

Evaluation of liquid‐crystal‐display motion blur with moving‐picture response time and human perception

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