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3LCD is the name and brand of a major LCD projection color image generation technology used in modern digital projectors. 3LCD technology was developed and refined by Japanese imaging company Epson in the 1980s and was first licensed for use in projectors in 1988. In January 1989, Epson launched its first 3LCD projector, the VPJ-700. Although Epson still owns 3LCD technology, it is marketed by an affiliated organization simply named after the technology:"3LCD". The organization is a consortium of projector manufacturers that have licensed 3LCD technology to be used in their products. To date, about 40 different projector brands worldwide have adopted 3LCD technology. According to electronics industry research company Pacific Media Associates, projectors using 3LCD technology comprised about 51% of the world's digital projector market in 2009. 3LCD technology gets its name from the three LCD panel chips used in its image generation engine. Source from Wiki

Digital Light Processing (DLP) is a display device based on optical micro-electro-mechanical technology that uses a digital micromirror device. It was originally developed in 1987 by Dr. Larry Hornbeck of Texas Instruments. Source from Wikipedia  https://en.wikipedia.org/wiki/Digital_Light_Processing

LPDDR RAM stands for low power double data rate random access memory, and is the memory used to store short term data used by applications. Unlike its desktop equivalent, low power RAM comes with a smaller bit bus, but this helps when it comes to power efficiency. The number, such as LPDDR3 or LPDDR4, simply marks the generation of the technology, we’ll have to dive down a little deeper into the specifications to see what has changed.