Polymer OLED technology will pave the way to the micro display it?

Low power micro display continues to gain further growth momentum, especially in the mobile application market, such as music / video player, camera and camera viewfinder, and consumer video glasses. There are many micro display technology in the market competition. Transmission display (especially micro LCD technology) technology has matured through the growing popularity of large screen TV and monitor application market. Reflective display technology (including digital light processing technology of DLP and liquid crystal on silicon LCOS Technology) is especially advantageous for projection system, and over the years they have in various popular applications are realized, and has made significant progress. Radiation display technology (such as OLED, organic LED) is relatively new, but has been able to compete with LCD and LCOS technology in terms of price and performance. In addition, because they are still relatively early stage of development of the technology, so they will have more room for improvement in the future.

OLED displays can use small organic molecules or polymers. From the display market, light emitting polymers can be dissolved with the main advantage, because it requires no vacuum temperature controlled can be easily deposited to the display substrate in solution (as by spin coating or ink jet printing). Compared with the small molecule OLED, the polymer technology allows the manufacture of a larger screen size of the display, because it does not require vacuum deposition mask mask required. Polymer OLED (P-OLED) displays can also operate at lower voltages and lower power consumption than small molecule based displays.

P-OLED technology will acquire real development in the beginning of 90s, when the British based start-up company Cambridge Display Technology (CDT) from the University of Cambridge independent development of light emitting polymers, it is a kind of fluorescent material is located in the center of the display area P-OLED.

Today, P-OLED technology can be used to create a variety of sizes and performance of the display, from simple monochrome display to display dynamic video full-color graphics display. According to a leading industry research firm NanoMarkets LC, organic electronics technology is rapidly out of the laboratory and into practical application. Such as OLED, organic thin film transistor and other organic material display products market will increase from $1 billion 400 million in 2007 to $19 billion 700 million in 2012, and continue to achieve in 2014 revenue of $34 billion 400 million. By 2012, the OLED industry (including monitors, signage and lighting applications) market is expected to grow to $10 billion 800 million.

The micro display (integrated with the display driver and control electronics) on a silicon substrate. There are two main types of micro display applications: projection and near eye. P-OLED micro display provides the greatest advantage of the near eye micro display can be subdivided into two main subclasses. In the first class, the micro display module is embedded into the product, and then use the hands to the front, such as for electronic viewfinder video cameras and digital cameras, as well as for some special systems (such as night vision, binocular telescope and electronic telescope) electronic viewfinder. In another class, micro display module using a hands-free structure placed in front, or as a pair of video glasses worn on the head (such as personal multimedia player head mounted display), they can be made by the mobile phone to watch TV and play games on the road.

The latest in view of the above application of P-OLED micro display of Edinburgh is located in the British MicroEmissive Displays (MED) developed by eyesCREEn ME3204, which provides a complete digital micro display solutions, and high electronic and optical integration. ME3204 can provide the first image quality and ultra low power, it can provide excellent QVGA resolution (320 x 240, 230K pixels) of the image quality, diagonal pixel array spacing is only about 0.24 inches (6mm).

No radiation type polymer organic light emitting diode (P-OLED) backlight for components and ME3204 technology, integrated circuit and electronic display driver digital video interface, ME3204 allows direct seamless integration to many kinds of system, and makes the product designers to develop smaller and lighter products. Eyescreen ME3204 is supplied with an integrated set of wires.

low power consumption

The key elements of micro display monitor are power consumption, image quality and life. Power is a problem, its impact on video glasses than the viewfinder viewfinder, because is only one active component of handheld devices, and in the video glasses, micro display is basically the main active components.

In a digital camera, the LCD display is probably the single most powerful component. This is also the reason why it is often recommended to turn off the LCD screen to save battery life. For example, a typical 320 x 240 pixel LCD display may consume a power of 300 or 400mW, while a typical LCD micro display consumes less power than 200mW. However, a P-OLED micro display consumes only 50mW power, so use a P-OLED EVF instead of a LCD display or LCD micro display, the equivalent of the battery life, made a very significant improvement.

One of the reasons for this phenomenon is traced back to the basic characteristics of display technology. LCD requires a very bright backlight because they are transmissive and inefficient. On the contrary, P-OLED itself will shine, and the efficiency is very high.

Power consumption in the video glasses is a very big problem, where the micro display is