KR980005234A - Method for manufacturing film type deflection member of cathode ray tube and its deflection member - Google Patents

Abstract

The present invention provides a method for producing a film-type deflection member of a cathode ray tube for producing a deflection member by laminating a plurality of planarized films and molding them in a predetermined shape at the deflection portion thereof, and a deflection member thereof. The manufacturing method includes the steps of: stacking a plurality of films while forming a thermosetting resin layer between respective deflection portions of the plurality of planarized films; Preliminarily joining the deflection portions of the laminated plurality of films in a planar state; Loading the plurality of temporarily bonded films into a forming mold whose surface is heated to a predetermined temperature to form the deflection into a predetermined shape; And cooling the forming mold under a state in which the deflection portion is pressed to maintain a predetermined shape in the forming step, and solidifying the formed deflection portion into a predetermined shape. As a result, the film-type deflection member can be manufactured in a predetermined shape without damage or damage to the film or conductive wire, and without wrinkles, and the thermosetting resin layer is cured by heat during high temperature forming to maintain the predetermined shape of the deflection portion more firmly. In addition, the deformation of the cathode ray tube does not occur even during operation of the cathode ray tube, such that the predetermined deflection magnetic field pattern is constant without change over time.

Description

Method for manufacturing film type deflection member of cathode ray tube and its deflection member

As this is a public information case, the full text was not included.

6 is a process chart for explaining the manufacturing process of the film-type deflection member.

Fig. 7 (a) is a cross sectional view of a mold for stacking a plurality of films to form a deflection portion of the deflection member, (b) is a cross-sectional view of line 7-7 of (a), and (c) is deflection of the deflection member. Heating and cooling temperature curves during negative forming.

Claims (12)

A method of manufacturing a film-type deflection member of a cathode ray tube manufactured by stacking a plurality of planarized films each having a plurality of conductive wires formed in a predetermined pattern to form a predetermined magnetic field and forming the predetermined shape; Stacking a plurality of films while forming a thermosetting resin layer between respective deflection portions of the plurality of planarized films; Preliminarily joining the deflection portions of the laminated plurality of films in a planar state; Loading the plurality of temporarily bonded films into a forming mold whose surface is heated to a predetermined temperature to form the deflection into a predetermined shape; And cooling the forming mold under a state in which the deflection portion is pressed to maintain a predetermined shape in the forming step, and solidifying the formed deflection portion into a predetermined shape. Way. The method of claim 1, wherein each of the films has bending portions each having at least one or more slits from both sides of the deflection portion. The method of claim 1, wherein a predetermined temperature in the forming step is within ± 500C of the glass transition temperature of the film material. The method of claim 3, wherein the film is made of polyimide, and the predetermined temperature is in a range of 300 ± 50 ° C. The method of claim 1, wherein in the solidification step, the film forming deflection member of the cathode ray tube is air cooled by air blow to the room temperature for 30 minutes to 1 hour. The method of claim 1, wherein the forming mold is quenched to room temperature by water cooling in the solidifying step. The method of claim 1 or 2, wherein the thermosetting resin layer is formed by applying in the form of an adhesive solution, and in the provisional bonding step, the solution is solidified. . The cathode ray tube according to claim 1 or 2, wherein the thermosetting resin layer is formed by inserting in the form of an adhesive sheet, and in the provisional bonding step, preheating the solidified adhesive sheet. The film-type deflection member manufacturing method. A film-type deflection member of a cathode ray tube, which is formed by stacking a plurality of planarized films each having a plurality of conductive wires embedded in a predetermined pattern to form a predetermined magnetic field and forming a predetermined shape; Laying a plurality of films while forming a thermosetting resin layer on each of the deflection portions of the plurality of flattened films, preliminarily joining the undeviating portions of the laminated plurality of films in an equilibrium state, and preserving the plurality of temporarily bonded films. Load the forming mold heated to a temperature at a temperature to form the deflection portion into a predetermined shape, and in the forming step, the foaming mold is cooled to press the deflection portion to maintain a predetermined shape, thereby forming the formed deflection portion. Film-type deflection member of the cathode ray tube, characterized in that produced by solidifying in the shape of. 10. The film type deflection member of claim 9, wherein each of the films has bending portions each of which at least one slits are formed outwardly from the deflection portion. 10. The film type deflection member of claim 9, wherein the thermosetting resin layer is formed by applying in the form of an adhesive solution. The film type deflection member of claim 9, wherein the thermosetting resin layer is formed by inserting in the form of an adhesive sheet. ※ Note: The disclosure is based on the initial application.