This book is a comprehensive report on the present state and future prospects of the displays that are used in entertainment television sets or in data terminals and personal computers. Such a treatment was deemed necessary because of the importance of displays in possible future communications services incorporating computer graphics and video. Two main conclusions are drawn. One is that modest-size flat-panel displays will become commonplace where space is at a premium, such as on desktops and in kitchens or bedrooms. It is another matter to stretch these displays to several feet on a side, however. In the foreseeable future these larger displays will rely on optical projection.