43.3: Summary of Moving Picture Response Time (MPRT) and Futures

Igarashi, Y.; Yamamoto, Taku; Tanaka, Yoshinori; Someya, Jun; Nakakura, Y.; Yasugi, Masaki; Nishida, Yoko; Kurita, Taiichiro

doi:10.1889/1.1821340

Cited by 74 publications

(49 citation statements)

References 4 publications

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“…For quantitative comparison, we performed motion picture response time (MPRT) simulation considering the smooth pursuit and integration of the brightness of human eyes. 13,14 The MPRT simulation results also show the Fig. 3 A new digital-to-analog conversion (DAC) scheme to create OD voltages higher than the white level.…”

Section: Resultsmentioning

confidence: 95%

Driving technology for improving motion quality of active-matrix organic light-emitting diode display

Kim

et al. 2014

Opt. Eng

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Abstract. This paper reports transient response characteristics of active-matrix organic light emitting diode (AMOLED) displays for mobile applications. This work reports that the rising responses look like saw-tooth waveform and are not always faster than those of liquid crystal displays. Thus, a driving technology is proposed to improve the rising transient responses of AMOLED based on the overdrive (OD) technology. We modified the OD technology by combining it with a dithering method because the conventional OD method cannot successfully enhance all the rising responses. Our method can improve all the transitions of AMOLED without modifying the conventional gamma architecture of drivers. A new artifact is found when OD is applied to certain transitions. We propose an optimum OD selection method to mitigate the artifact. The implementation results show the proposed technology can successfully improve motion quality of scrolling texts as well as moving pictures in AMOLED displays.

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Section: Resultsmentioning

confidence: 95%

Driving technology for improving motion quality of active-matrix organic light-emitting diode display

Kim

et al. 2014

Opt. Eng

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“…The larger is applied, the larger contrast between dimming and boosting curve was yielded, which means the larger -value will generate a more obvious blinking effect to further suppress Motion Blur, but also make the dimming and boosting frames be more similar to conventional Blinking BL operation, which results in reduction of image brightness. In order to obtain a balance performance, the MPRT, which is calculated by 8 8 normalized blurred edge time (N-BET) [20], and image brightness are investigated by different -values with two driving rate, 60 Hz LC with 120 Hz BL and 120 Hz LC with 240 BL frame-rate. The results were also compared with that of different LCD systems, such as conventional LCDs (60 Hz driving), Blinking BL systems (60 Hz LC with 120 Hz BL), and high frame-rate driving LCDs (240 Hz ME/MC), as shown in Fig.…”

Section: Bl Mapping Curves and Optimizationmentioning

confidence: 99%

Local Blinking HDR LCD Systems for Fast MPRT With High Brightness LCDs

Liao

Chen

Huang

2010

J. Display Technol.

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Abstract-A new impulse-type display named Local Blinking High Dynamic Range (HDR) LCD System was proposed, which utilized local dimming technology to achieve a local blinking effect that not only suppressed motion blur and reduce Moving Picture Response Time (MPRT) to 3.89 ms but also applied local image compensation to maintain image brightness and details without substituting high power light source. In addition, the intrinsic advantages, such as high dynamic range (high contrast ratio) and low power consumption were also achieved.Index Terms-High-dynamic-range (HDR), local blinking, motion blur, Moving Picture Response Time (MPRT).

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“…However, the human eye moves continuously and linearly. Th e diff erence between the trajectory of the eye and the movement path of the image on the display causes the viewer to perceive the moving image as being blurred ( Figure 5(a)), no matter how fast the response time of the liquid crystal [52][53][54][55][56].…”

Section: Holding-type Display Problemmentioning

confidence: 99%

“…Recently, a 240 Hz driving method, in which three interpolated images are inserted between successive frames, has achieved similar moving image performance to that of CRT displays. Table 1 lists the measured motion picture response times (MPRTs) for various display rates with and without impulsive driving of the backlight [55,56]. Th is measurement is the quantitative response time for moving images considering both the LC molecular motion and the holding image eff ect.…”

Section: Holding-type Display Problemmentioning

confidence: 99%

Technical evolution of liquid crystal displays

2009

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I n 1888, more than a century ago, the Austrian botanist FriedrichReinitzer discovered an intermediate state of matter between isotropic liquid and lattice-structured crystal [1][2][3]. Th is state, later termed liquid crystal (LC), remained merely a novelty for many years until suitable applications for the technology began to become apparent. From the late 1960s, following the realization that various display applications were possible, the popularity of liquid crystal as a research fi eld expanded rapidly, attracting the interest of many scientists who made fundamental contributions to the technologies that have led to the spectacular success of liquid crystal displays (LCDs) [3][4][5][6][7][8][9][10][11][12][13]. Th e development of the twisted nematic (TN) [4] and supertwisted nematic (STN) [5] cell confi gurations, along with the necessary manufacturing technologies [6][7][8][9], resulted in the birth of the LCD industry in the late 1970s and early 1980s. The subsequent development of thin-film transistor (TFT) technology provided a further boost to the industry in the late 1980s [14,15]. Th e boom was signifi cantly supported by the advancement of material technologies such as the highly reliable manufacturing of liquid crystal base materials, and the development of polymers for the alignment layer, color fi lter materials, and sheet-type polarizers formed from the poly(vinyl alcohol)-iodine complex.In the 1990s, LCDs occupied an important position in the display market primarily through notebook applications, although the cathode ray tube (CRT) continued to dominate the desktop monitor and television markets. Th e plasma display panel (PDP), which appeared in the commercial market in 1997, pioneered the large-area fl at panel display market. It was widely predicted at the time that PDPs would maintain the lead in the large-area display market and that LCDs in small-display information technology (IT) applications would soon be replaced by new technologies such as displays based on organic light-emitting diodes (OLEDs) [16,17]. Such predictions were based on the belief that the LCD technology suff ered from serious limitations in terms of both off -axis image quality and moving picture quality, and also that it had proved diffi cult to obtain reasonable manufacturing yields of large-area TFT panels. However, these predictions, as we now know, turned out to be incorrect. Th e application of LCDs has expanded rapidly in recent years from purely information technology (IT) applications to the television and mobile display markets, and now even to very-large-area digital information displays (DIDs).Interestingly, while LCDs penetrated the traditional territories of other display technologies including CRTs and PDPs, attracting inevitable and heavy competition from these technologies, the most critical competitors were in fact alternative LCD technologies. A range of LCD modes and technologies are now applied in the same areas of application and are compared directly with one another in the market. In applicat...

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43.3: Summary of Moving Picture Response Time (MPRT) and Futures

Cited by 74 publications

References 4 publications

Driving technology for improving motion quality of active-matrix organic light-emitting diode display

Driving technology for improving motion quality of active-matrix organic light-emitting diode display

Local Blinking HDR LCD Systems for Fast MPRT With High Brightness LCDs

Technical evolution of liquid crystal displays

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