High luminance monochrome vs. color displays: impact on performance and search

2011 ◽  
Author(s):  
Elizabeth A. Krupinski ◽  
Hans Roehrig ◽  
Takashi Matsui
Keyword(s):  
High Luminance ◽  
Color Displays

scholarly journals Development of Quantum Dot (QD) Based Color Converters for Multicolor Display

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1089
Author(s):  
Muhammad T. Sajjad ◽  
Ashu K. Bansal ◽  
Francesco Antolini ◽  
Eduard Preis ◽  
Lenuta Stroea ◽  
...  
Keyword(s):  
Polymer Matrix ◽  
Cost Effective ◽  
Final Size ◽  
Force Microscopy ◽  
Morphological Studies ◽  
Color Displays ◽  
Transmission Electron ◽  
Different Temperatures ◽  
Color Conversion ◽  
Temperature Time

Many displays involve the use of color conversion layers. QDs are attractive candidates as color converters because of their easy processability, tuneable optical properties, high photoluminescence quantum yield, and good stability. Here, we show that emissive QDs with narrow emission range can be made in-situ in a polymer matrix, with properties useful for color conversion. This was achieved by blending the blue-emitting pyridine based polymer with a cadmium selenide precursor and baking their films at different temperatures. To achieve efficient color conversion, blend ratio and baking temperature/time were varied. We found that thermal decomposition of the precursor leads to highly emissive QDs whose final size and emission can be controlled using baking temperature/time. The formation of the QDs inside the polymer matrix was confirmed through morphological studies using atomic force microscopy (AFM) and transmission electron microscopy (TEM). Hence, our approach provides a cost-effective route to making highly emissive color converters for multi-color displays.

A review and assessment of the Shared-Pathway Hypothesis for the maintenance of signal honesty in red ketocarotenoid-based coloration

2021 ◽  
Author(s):  
Matthew J Powers ◽  
Geoffrey E Hill
Keyword(s):  
Mitochondrial Function ◽  
Alternative Explanation ◽  
Condition Dependence ◽  
Mitochondrial Energy Metabolism ◽  
Cellular Processes ◽  
Color Displays ◽  
Signal Honesty ◽  
Empirical Tests ◽  
And Performance ◽  
Individual Condition

Abstract For decades, scientists have noted connections between individual condition and carotenoid-based coloration in terrestrial and aquatic animals. Organisms that produce more vibrant carotenoid-based coloration tend to have better physiological performance and behavioral displays compared to less colorful members of the same species. Traditional explanations for this association between ornamental coloration and performance invoked the need for color displays to be costly, but evidence for such hypothesized costs is equivocal. An alternative explanation for the condition-dependence of carotenoid-based coloration, the Shared-Pathway Hypothesis, was developed in response. This hypothesis proposes that red ketocarotenoid-based coloration is tied to core cellular processes involving a shared pathway with mitochondrial energy metabolism, making the concentration of carotenoids an index of mitochondrial function. Since the presentation of this hypothesis, empirical tests of the mechanisms proposed therein have been conducted in many species. In this manuscript, we review the Shared-Pathway Hypothesis and the growing number of studies that have investigated a connection between carotenoid-based coloration and mitochondrial function. We also discuss future strategies for assessing the Shared-Pathway Hypothesis to more effectively disentangle evidence that may simultaneously support evidence of carotenoid-resource tradeoffs.

59-4: Reduction of Possible Flicker and Color Breakup using Deflicker-FSC Method for Field-Sequential-Color Displays

2016 ◽  
Vol 47 (1) ◽  
pp. 809-812 ◽  
Author(s):  
Kai-Tung Teng ◽  
Fang-Cheng Lin ◽  
Chi-Wen Chang ◽  
Ching-Huan Lin ◽  
Yi-Pai Huang ◽  
...  
Keyword(s):  
Color Displays

Laser-Deposition Of High Luminance Thin Film Phosphors

1994 ◽  
Vol 345 ◽  
Author(s):  
J. A. Greer ◽  
H. J. Van Hook ◽  
M. D. Tabat ◽  
H. Q. Nguyen ◽  
G. Gammie ◽  
...  
Keyword(s):  
Thin Film ◽  
Electric Fields ◽  
Spot Size ◽  
Porous Powder ◽  
Powder Phosphor ◽  
High Luminance ◽  
Intimate Contact ◽  
Field Emitter ◽  
Display Performance ◽  
Phosphor Screens

AbstractHigh luminance (brightness) thin-film phosphor materials have potential use in a variety of applications including heads-up, helmet-mounted, and electroluminescent displays, as well as in emerging flat-panel displays based on field emitter technology. Phosphor materials in thin film form offer several advantages over conventional powder phosphor screens. Since the film is nearly fully dense and in intimate contact with the underlying substrate, thin film phosphors transfer heat to the face plate much quicker than conventional, more porous, powder phosphor materials. This allows thin film phosphor screens to be driven at higher power levels, and therefore produce higher luminance, assuming the efficiency of the powder and film are the same. Fully dense phosphor films have smaller surface area, and will outgas less than conventional powder phosphor materials. Thin film phosphors have smaller grain sizes than conventional powder phosphor materials which will provide for smaller spot size, and thus, higher resolution. Furthermore, in applications such as field-emitter displays, powder phosphor particles can be physically dislodged from the screen due to the high electric fields produced by the large potential difference between the anode screen and gate electrode (or cathode), or dislodged by arcing which may occur if a powder particle protrudes significantly above the screen surface. Dislodged particles or damage produced by arcing could degrade display performance. Dense, thin-film phosphor materials which are well adhered to transparent substrates will provide much smoother surface morphologies, and should be able to withstand significantly higher electric field strength without arcing or screen degradation due to the dislocation of particles.

Illuminators based on composite LEDs for multifunctional high-luminance active-matrix liquid-crystal displays

2011 ◽  
Vol 78 (7) ◽  
pp. 444 ◽  
Author(s):  
V. A. Bol’shukhin ◽  
V. S. Ilyasov ◽  
N. P. Soshchin ◽  
V. N. Ulasyuk
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Displays ◽  
High Luminance ◽  
Active Matrix ◽  
Matrix Liquid

High luminance of new green emitting phosphor, Mg2SnO4:Mn

2002 ◽  
Vol 99 (3) ◽  
pp. 169-173 ◽  
Author(s):  
Kyung Nam Kim ◽  
Ha-Kyun Jung ◽  
Hee Dong Park ◽  
Dojin Kim
Keyword(s):  
High Luminance

Evaluation of next-generation color wheels for field sequential color displays

2006 ◽  
Author(s):  
Julien Thollot ◽  
Khaled Sarayeddine ◽  
Alain Tremeau
Keyword(s):  
Next Generation ◽  
Color Displays

Real-Time Wind Measurement in Extratropical Cyclones by Means of Doppler Radar

1977 ◽  
Vol 16 (10) ◽  
pp. 1022-1028 ◽  
Author(s):  
H. W. Baynton ◽  
R. J. Serafin ◽  
C. L. Frush ◽  
G. R. Gray ◽  
P. V. Hobbs ◽  
...  
Keyword(s):  
Wind Speed ◽  
Real Time ◽  
Doppler Radar ◽  
Extratropical Cyclones ◽  
Wide Spread ◽  
The Real ◽  
Color Displays ◽  
Real Time Information ◽  
Time Information ◽  
Shaped Pattern

Abstract Color displays of the velocities of precipitation particles detected with a C-band Doppler radar in wide-spread cyclonic storms provide a variety of real-time information on the atmospheric wind field.Vertical profiles of wind speed and direction indicated by the real-time color displays agree well withrawinsonde measurements. Veering winds (or warm advection) produce a striking S-shaped pattern onthe color display and backing winds (or cold advection) produce a backward S. A maximum in the verticalprofile of wind speed is indicated by a pair of concentric colored rings, one upwind and one downwind ofthe radar. Vertically sloping velocity maxima are indicated by asymmetries in the color displays, as areconfluent and difluent winds. Divergence and convergence computed from the real-time color displays areof reasonable magnitude.

Failure of color constancy for high luminance of a test patch that appears unnatural as an object in a space

2007 ◽  
Vol 14 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Pontawee Pungrassamee ◽  
Mitsuo Ikeda ◽  
Aran Hansuebsai
Keyword(s):  
Color Constancy ◽  
High Luminance ◽  
Test Patch
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