Project PDA

LCD screen used by most PDAs. PDA phones screen sizes are calculated in inches and are obtainable from 2.6 inches up to 5 inches on the extremely high-end. Superior, brighter screens necessitate extra power to function therefore anticipate battery utilization to boost with the screen size of your PDA.

liquid crystal display (LCD) is a thin, flat display device made up of any number of color or monochrome pixels arrayed in front of a light source or reflector. It is prized by engineers because it uses very small amounts of electric power, and is therefore suitable for use in battery-powered electronic devices.

In color LCDs each individual pixel is divided into three cells, or subpixels, which are colored red, green, and blue, respectively, by additional filters (pigment filters, dye filters and metal oxide filters). Each subpixel can be controlled independently to yield thousands or millions of possible colors for each pixel. Older CRT monitors employ a similar method.

Color components may be arrayed in various pixel geometries, depending on the monitor's usage. If software knows which type of geometry is being used in a given LCD, this can be used to increase the apparent resolution of the monitor through subpixel rendering. This technique is especially useful for text anti-aliasing.

High-resolution color displays such as modern LCD computer monitors and televisions use an active matrix structure. A matrix of thin-film transistors (TFTs) is added to the polarizing and color filters. Each pixel has its own dedicated transistor, allowing each column line to access one pixel. When a row line is activated, all of the column lines are connected to a row of pixels and the correct voltage is driven onto all of the column lines. The row line is then deactivated and the next row line is activated. All of the row lines are activated in sequence during a refresh operation. Active-matrix displays are much brighter and sharper than passive-matrix displays of the same size, and generally have quicker response times, producing much better images.

3LCD Display Technology

3LCD is a video projection system that uses three LCD microdisplay panels to produce an image. It was adopted in 1995 by numerous front projector manufacturers and in 2002 by rear projection TV manufacturers for its compactness and image quality.

3LCD is an active-matrix, HTPS (high-temperature polysilicon) LCD projection technology. It inherits sharp images, brightness and excellent color reproduction from its active matrix technology. Deeper blacks are contributed by the HTPS technology.

The 3LCD website describes the technology in detail and is supported by various companies including 3LCD manufacturers and vendors.