Abstract: An exhaust hole (10) formed in a cathode substrate (1) is surrounded by an exhaust substrate (6), an exhaust substrate frame (71), and a sealing material (32) so that an exhaust chamber is formed. An exhaust substrate exhaust hole (81) is formed in the exhaust substrate (6), and an exhaust tube (8) is connected to the exhaust substrate exhaust hole (81) to evacuate an interior of a display device. If an end part of the exhaust hole (10) has a sharp edge, sparking will start to occur at the edge. To address this problem, a chamfer (101) is formed on the exhaust hole (10). Similarly, chamfers may be formed on the exhaust substrate exhaust hole (81) and a high-voltage introduction button hole (82). Forming such chamfers can prevent sparking originating from the edges of the exhaust hole (10) and the like formed in the cathode substrate (1) and the like.

Abstract: Hillock is prevented when aluminum wiring is used in order to reduce line resistance in a display unit. The aluminum wiring is formed into multi-layer structure and each layer contains an element which is not solidly solubilized with aluminum. The element are preferably rare earth metal such as Nd, high-melting point transition metals such as Ta and noble metals such as Pd. Intermetallic compounds of aluminum and the element are educed at an interface of the multi-layer wiring and it is prevented that grains of aluminum are enlarged to form hillock.

Abstract: The present invention relates to an inline type color picture tube having a coma distortion correcting mechanism in electron guns. A shield cup is attached to the tips of the electron guns. Three electron beam through-holes are formed in the shield cup in the inline direction. Ring-shaped magnetic material members are arranged around the two outside electron beam through-holes among those three through-holes. This magnetic material member is made of a material of a high permeability. Further, each ring-shaped magnetic material has a gap portion on the side opposite to the central electron beam through-hole. The gap portions of the ring-shaped magnetic materials arranged around both of the outside through-holes have shapes which are symmetrical in the lateral direction around the central electron beam through-hole as a center.