DISPLAY DEVICE OF CATHODE-RAY TUBE

• Main Authors: OOSAWA MICHITAKA, MAEKAWA HITOSHI
• Format: Patent
• Language: English
• Published: 15.04.1983
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

PURPOSE:To improve significantly the image resolution, by connecting a substrate containing a driving circuit and a CRT socket with a flexible printed circuit board and as a result reducing the limitation for the form and the weight of the driving circuit. CONSTITUTION:A circuit board 7 has a flexible print constitution. A CRT driving substrate 2b is connected flexibly to a CRT socket 3 via the board 7 and supported by a CRT via a different rigid member. The substrate 2b contains all functions to drive the CRT. Furthermore the image resolution is improved with an extremely wide frequency band, and the size and weight of a driving amplifier 4 are increased. However, the member which supports the substrate 2b is very rigid, and the circuit board 7 is flexible. Thus the resistance is sufficiently large to the impact and vibrations. The entire part of a substrate 5 is covered with a shielding case 5 with the resistance to an electromagnetic wave.