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2. Liquid-crystal display - Wikipedia

   en.wikipedia.org/wiki/Liquid-crystal_display

   LCDs can either be normally on (positive) or off (negative), depending on the polarizer arrangement. For example, a character positive LCD with a backlight has black lettering on a background that is the color of the backlight, and a character negative LCD has a black background with the letters being of the same color as the backlight.

3. LCD projector - Wikipedia

   en.wikipedia.org/wiki/LCD_projector

   Epson owns the technology and has branded it as "3LCD". To market 3LCD projector technology, Epson also set up a consortium called the "3LCD Group" in 2005 with other projector manufacturer licensees of 3LCD technology that use it in their projector models. Early LCD systems were used with existing overhead projectors.

4. Screen-door effect - Wikipedia

   en.wikipedia.org/wiki/Screen-door_effect

   Some older LCD projectors have a more noticeable screen-door effect than first generation DLP projectors. [2] Newer DLP chip designs promise closer spacing of the mirror elements which would reduce this effect; [ citation needed ] however, some space is still required along one edge of the mirror to provide a control circuit pathway.

5. Projector - Wikipedia

   en.wikipedia.org/wiki/Projector

   A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens , but some newer types of projectors can project the image directly, by using lasers .

6. HDMI - Wikipedia

   en.wikipedia.org/wiki/HDMI

   An HDMI port on the side of a laptop computer. Some tablet computers implement HDMI using Micro-HDMI (type D) port, while others like the Eee Pad Transformer implement the standard using mini-HDMI (type C) ports. All iPad models have a special A/V adapter that converts Apple's Lightning connector to a standard HDMI (type A) port.

7. Miracast - Wikipedia

   en.wikipedia.org/wiki/Miracast

   Miracast is a wireless communications standard created by the Wi-Fi Alliance which is designed to transmit video and sound from devices (such as laptops or smartphones) to display receivers (such as TVs, monitors, or projectors).