18.2: Architectural Choices in a Scanning Backlight for Large LCD TVs

Sluyterman, A. A. S.; Boonekamp, E. P.

doi:10.1889/1.2036618

Cited by 44 publications

(25 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One method, impulsive driving [57][58][59], imitates the display mechanism of the CRT by inserting a black image between successive display frames, either directly or by blinking the backlight lamp in part of the panel (Figure 6(a,b)). The longer the duration of the dark state, the better the quality of the moving image.…”

Section: Holding-type Display Problemmentioning

confidence: 99%

Technical evolution of liquid crystal displays

2009

View full text Add to dashboard Cite

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...

show abstract

Section: Holding-type Display Problemmentioning

confidence: 99%

Technical evolution of liquid crystal displays

2009

View full text Add to dashboard Cite

show abstract

“…Alternatively, the backlight can be modified to reduce the duration of the display aperture. This is achieved by switching off the backlight during a part of the frame, which involves a 'scanning backlight' (SB) [2,11]. Figure 5a shows the backlight temporal profile, both the ideal and a realistic profile that takes into account characteristics like lamp decay time and spatial light 7 Alternatively, one could record and transmit video at higher frame rates.…”

Section: Scanning Backlightmentioning

confidence: 99%

54.1: Comparison of LCD Motion Blur Reduction Methods using Temporal Impulse Response and MPRT

Klompenhouwer

2006

SID Symposium Digest

View full text Add to dashboard Cite

show abstract

“…For BFI, the loss of luminance and contrast can be overcome by combining BFI with a scanning backlight. 5 However, a scanning backlight also gives favorable results on its own, 6,7 GFI is difficult to combine successfully with a scanning backlight.…”

Section: Approaches For Reducing Betmentioning

confidence: 99%

What is needed in LCD panels to achieve CRT‐like motion portrayal?

Sluyterman¹

2006

J Soc Info Display

Self Cite

View full text Add to dashboard Cite

Abstract— In LCD panels, motion portrayal as well as panel‐addressing speed and response time are critical. They need to be balanced carefully, in particular for HDTV. It will be shown which combination of technologies, such as response‐time improvement, black‐frame insertion, double frame rate, and scanning backlight, can achieve CRT‐like motion portrayal without demanding extreme response speeds from the panel.

show abstract

18.2: Architectural Choices in a Scanning Backlight for Large LCD TVs

Abstract: A production-ready scanning LCD backlight system for TV sets of 32" and larger has been designed. It improves the representation of moving objects and allows fast and deep dimming for higher contrast. This paper describes the architectural choices made for these designs.

Cited by 44 publications

References 2 publications

Technical evolution of liquid crystal displays

Technical evolution of liquid crystal displays

54.1: Comparison of LCD Motion Blur Reduction Methods using Temporal Impulse Response and MPRT

What is needed in LCD panels to achieve CRT‐like motion portrayal?

Contact Info

Product

Resources

About