Abstract
High definition television for both commercial and consumer use is critically dependent on the development of new display technology that can be manufactured at a reasonable price. There is a strong demand for new high definition displays for the theatre conference rooms and for other commercial applications. These applications need inexpensive high resolution projection displays with 3,000 to 10,000 lumens output. Only light-valve projectors have been able to come close to the technical requirements - but at a very high cost.