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Gamma has a significantly modified definition when referring to contemporary LCD TVs. Every manufacturer of LCD TVs must consider gamma at some point throughout the development process.
If not, even if they had the best panel technology available, no one would purchase it since the panel would erroneously replicate images.
In this context, “incorrectly” refers to a representation of colour and luminance intensity that falls considerably short of what is necessary to faithfully duplicate or recreate the original source image.
The Global Programmable Gamma Buffer market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
An inbuilt 18-channel gamma reference called the ADD8708 from Analog Electronics is used in high resolution LCD TV and monitor panels.
accurate and steady gamma curve is provided by the output buffers, which have a high current drive and a low offset voltage. Nine channels on the top row swing to VDD, while nine channels on the bottom row swing to GND.
The number of external components is significantly decreased while the precision of the gamma curve is increased by integrating the gamma setting resistors.
Using the on-chip 500 resistor string, the ADD8708 is mask programmable to a 0.2% precision to support various column drivers and panel topologies.
The resistor string receives a fixed input from an on-board voltage regulator, which isolates the gamma curve from the supply ripple.
The ADD8708 is available in a Pb-free, low-profile, quad flat package and a 48-lead, lead-frame chip-scale package, with specifications covering a temperature range of -40°C to +105°C.
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