MANUFACTURE OF IMAGE DISPLAY DEVICE

摘要

PURPOSE:To improve the adhesive properties of voltage applying terminals which are hermetically sealed to a glass envelope through adhesive frit by forming the terminals with such a method that only the sealing portion of terminal material Fe-Ni is clad with Cr and then the clad is treated with eromimum oxide. CONSTITUTION:Plural electrodes are arranged between rear electrode 30 and screen 31 and are included in glass envelopes 32 and 33 which are sealed together through adhesive frit 38. Evacuating the inside of the envelope, an image display device is formed. At the above process, electron beam current controlling electrode 34 and voltage applying electrodes 35 and 35' are made as different units, and the latters made of Fe-Ni group alloy 39 are clad only in the sealing portions with Cr clad material of thickness more than 50mum. Treating the clad portion alone with cromium oxide the terminals are formed and welded to electrode 34. Accordingly, this maufacturing method prevents the leakage at the sealing region by improving the adhesive strength of terminals 35 and 35tau to frit 38 and facilitates the soldering with lead wires as well.