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Backlight
A backlight is a form of illumination used in liquid crystal displays (LCDs). As LCDs do not produce light by themselves (unlike, for example cathode ray tube (CRT) displays), they need illumination (ambient light or a special light source) to produce a visible image. Backlights illuminate the LCD from the side or back of the display panel, unlike frontlights, which are placed in front of the LCD. Backlights are used in small displays to increase readability in low light conditions such as in wristwatches,[1] and are used in smart phones, computer displays and LCD televisions to produce light in a manner similar to a CRT display. A review of some early backlighting schemes for LCDs is given in a report Engineering and Technology History by Peter J. Wild.[2] Simple types of LCDs such as in pocket calculators are built without an internal light source, requiring external light sources to convey the display image to the user
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Car Glass
Glass
Glass
press production mould toolThis article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (February 2010) (Learn how and when to remove this template message) Car
Car
glass includes windscreens, side and rear windows, and glass panel roofs on a vehicle. Side windows can be either fixed or raised and lowered by depressing a button (power window) or switch or using a hand-turned crank. The power moonroof, a transparent, retractable sunroof, may be considered as an extension of the power window concept. Some vehicles include sun blinds for rear and rear side windows. The windshield of a car is appropriate for safety and protection of debris on the road[1]
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Nanosys
Nanosys
Nanosys
is a nanotechnology company located in Milpitas, California, founded in 2001.[1] Nanosys
Nanosys
designs products for displays based on quantum dots.Contents1 Products1.1 Quantum Dot
Quantum Dot
Enhancement Film (QDEF) 1.2 QuantumRail2 Awards 3 Founders, funding, and patents 4 References 5 External linksProducts[edit] Quantum Dot
Quantum Dot
Enhancement Film (QDEF)[edit] See also: Quantum dot display Nanosys
Nanosys
Quantum Dot
Quantum Dot
Enhancement Film, or QDEF, is an optical film component for LED
LED
driven LCDs. Each sheet of QDEF contains trillions of tiny Quantum Dot
Quantum Dot
Phosphors. QDEF enables LED-backlit LCDs to be brighter and more colorful by providing a high quality, tri-color white light from a standard blue LED
LED
light source
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Color Spectrum
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation
Electromagnetic radiation
in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm.[1] In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz. The spectrum does not, however, contain all the colors that the human eyes and brain can distinguish. Unsaturated colors such as pink, or purple variations such as magenta, are absent, for example, because they can be made only by a mix of multiple wavelengths. Colors containing only one wavelength are also called pure colors or spectral colors. Visible wavelengths pass through the "optical window", the region of the electromagnetic spectrum that allows wavelengths to pass largely unattenuated through the Earth's atmosphere
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Alternating Current
Alternating current
Alternating current
(AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction. Alternating current
Alternating current
is the form in which electric power is delivered to businesses and residences, and it is the form of electrical energy that consumers typically use when they plug kitchen appliances, televisions, fans and electric lamps into a wall socket. A common source of DC power is a battery cell in a flashlight. The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.[1][2] The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa
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CCFL Inverter
A CCFL inverter
CCFL inverter
is an electrical inverter that supplies alternating current power to a cold cathode fluorescent lamp (CCFL). CCFLs are often used as inexpensive light units in electrical devices that are powered by direct current sources such as batteries. CCFL inverters are small, have switchover efficiency over 80%, and offer adjustable output of light. They are widely used for backlights for LCDs, or for rear lighting in advertising signs.Example of the advanced CCFL Inverter for notebookResonance transformer and ultra-small CCFL-InverterContents1 History 2 See also 3 External links 4 ReferencesHistory[edit]CCFL Inverter circuit of the past generation of technologyCCFL Inverter circuit of the advanced technologyCCFL Inverter circuit of the most advanced technologyAs for the inverter circuit of a cold cathode fluorescent lamp, a resonance type circuit has been widely used
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HP EliteBook
HP EliteBook
HP EliteBook
is a brand of premium[1] business-class notebooks and mobile workstations made by Hewlett-Packard. The EliteBook series, which fits above the lower-end ProBook series,[2] was introduced in August 2008.[3][4] The Elitebook brand included mobile workstations until September 2013, when they were rebranded as HP ZBook
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Additive Color
Additive color
Additive color
is a method to create color by mixing a number of different light colors, with shades of red, green, and blue being the most common primary colors used in additive color system. Additive color
Additive color
is in contrast to subtractive color, in which colors are created by subtracting (absorbing) parts of the spectrum of light present in ordinary white light, by means of colored pigments or dyes, such as those in paints, inks, and the three dye layers in typical color photographs on film. The combination of two of the standard three additive primary colors in equal proportions produces an additive secondary color—cyan, magenta or yellow—which, in the form of dyes or pigments, are the standard primary colors in subtractive color systems
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Pixel
In digital imaging, a pixel, pel,[1] dots, or picture element[2] is a physical point in a raster image, or the smallest addressable element in an all points addressable display device; so it is the smallest controllable element of a picture represented on the screen. Each pixel is a sample of an original image; more samples typically provide more accurate representations of the original. The intensity of each pixel is variable
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Passband
A passband is the range of frequencies or wavelengths that can pass through a filter. For example, a radio receiver contains a bandpass filter to select the frequency of the desired radio signal out of all the radio waves picked up by its antenna. The passband of a receiver is the range of frequencies it can receive. A bandpass-filtered signal (that is, a signal with energy only in a passband), is known as a bandpass signal, in contrast to a baseband signal.[1]Contents1 Filters 2 Digital transmission 3 Details 4 ReferencesFilters[edit]Unrestricted signal (upper diagram). Bandpass filter
Bandpass filter
applied to signal (middle diagram). Resulting passband signal (bottom diagram)
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RGB Color Model
The RGB color model
RGB color model
is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue. The main purpose of the RGB color model
RGB color model
is for the sensing, representation and display of images in electronic systems, such as televisions and computers, though it has also been used in conventional photography. Before the electronic age, the RGB color model already had a solid theory behind it, based in human perception of colors. RGB is a device-dependent color model: different devices detect or reproduce a given RGB value differently, since the color elements (such as phosphors or dyes) and their response to the individual R, G, and B levels vary from manufacturer to manufacturer, or even in the same device over time
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3M
The 3M Company, formerly known as the Minnesota
Minnesota
Mining
Mining
and Manufacturing Company, is an American multinational conglomerate corporation based in Maplewood, Minnesota, a suburb of St. Paul.[2] With $30 billion in annual sales, 3M employs 90,000 people worldwide and produces more than 55,000 products, including: adhesives, abrasives, laminates, passive fire protection, personal protective equipment, dental and orthodontic products, electronic materials, medical products, car-care products (sun films, polish, wax, car shampoo, treatment for the exterior, interior and the under chassis rust protection),[3] electronic circuits, healthcare software and optical films.[4] 3M has operations in more than 65 countries including 29 international companies with manufacturing operations and 35 companies with laboratories
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Green
Green
Green
is the color between blue and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and blue, or yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy
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Sony
Sony
Sony
Corporation (ソニー株式会社, Sonī Kabushiki Kaisha, /ˈsoʊni/ SOH-nee, stylized as SONY) is a Japanese multinational conglomerate corporation headquartered in Kōnan, Minato, Tokyo.[9][1] Its diversified business includes consumer and professional electronics, gaming, entertainment and financial services.[10] The company is one of the leading manufacturers of electronic products for the consumer and professional markets.[11] Sony
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Consumer Electronics Show
CES (formerly an acronym for Consumer Electronics Show[1]) is an annual trade show organized by the Consumer Technology Association (CTA). Held in January at the Las Vegas Convention Center
Las Vegas Convention Center
in Las Vegas, Nevada, United States, the event typically hosts presentations of new products and technologies in the consumer electronics industry.Contents1 History 2 Show highlights2.1 1960s2.1.1 19672.2 1970s2.2.1 1970 2.2.2 1976 2.2.3 19792.3 1980s2.3.1 19822.4 1990s2.4.1 19932.5 2000s2.5.1 2002 2.5.2 2004 2.5.3 2005 2.5.4 2006 2.5.5 2007 2.5.6 2008 2.5.7 20092.6 2010s2.6.1 2010 2.6.2 2011 2.6.3 2012 2.6.4 2013 2.6.5 2014 2.6.6 2015 2.6.7 2016 2.6.8 2017 2.6.9 2018 2.6.10 20193 "Booth babes" controversy 4 CES Asia 5 See also 6 References 7 External linksHistory[edit] The first CES was held in June 1967 in New York City
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Samsung Electronics
Samsung
Samsung
Electronics
Electronics
Co., Ltd. (Korean: 삼성전자; Hanja: 三星電子 (Literally "tristar electronics")) is a South Korean multinational electronics company headquartered in Suwon, South Korea.[1] Through extremely complicated ownership structure with some circular ownership,[3] it is the flagship company of the Samsung Group, accounting for 70% of the group's revenue in 2012.[4] Samsung Electronics
Electronics
has assembly plants and sales networks in 80 countries and employs around 308,745 people.[2] It is the world's largest information technology company by revenue
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