Photosensitive insulation paste and thick film multilayer circuit substrate
A technology of circuit substrate and insulating paste, which is applied in the direction of multi-layer circuit manufacturing, circuit substrate material, circuit, etc., can solve the problem of increasing the limit of quality factor value, and achieve the effect of increasing density
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example 1
[0069] Appropriate amount of borosilicate glass powder and crystalline SiO 2 The powders were blended so as to obtain the respective ingredients in Table 2, and the obtained mixture was wet-mixed by using a zirconia ball mill for 3 to 4 hours, so as to obtain borosilicate glass powder and crystalline SiO 2 Powder a homogeneous powder mixture. Then, an organic binder and an organic solvent (toluene) were added to the powder mixture, and then sufficiently stirred by using a ball mill so as to obtain uniform dispersion. In addition, the dispersion thus obtained was degassed under reduced pressure, whereby a slurry for making a green sheet was obtained.
[0070] The green sheet slurry thus obtained was applied to a film with a doctor blade, whereby a green sheet having a thickness of 0.2 mm was formed. The green sheet is dried, and the film is peeled off and punched, thereby obtaining a ceramic green sheet of a predetermined size.
[0071] Table 2
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example 2
[0078] Table 4
[0079] Mix borosilicate glass powder and crystalline SiO in appropriate amounts 2 , so as to obtain the following ingredients: borosilicate glass powder / crystalline SiO 2 powder 60 / 40 (wt.%), and the resulting mixture was wet-mixed for 3 to 4 hours by using a zirconia ball mill, so as to obtain borosilicate glass powder and crystalline SiO 2 Homogeneous powder mixture of powder. Then, an organic binder and an organic solvent (toluene) were added to the powder mixture, which was then thoroughly stirred by using a ball mill so as to obtain uniform dispersion. In addition, the dispersion thus obtained was degassed under reduced pressure, thereby obtaining a slurry of a green sheet.
[0080] The green sheet slurry thus obtained was applied to a film by using a doctor blade, thereby forming a green sheet having a thickness of 0.2 mm. The green sheet is dried, the film is removed, and punched, whereby a ceramic green sheet of a predetermined size is ob...
example 3
[0089] Get SiO 2 , B 2 o 3 and K 2 O as a starting material for the preparation of borosilicate glass powder contained in a photosensitive insulating paste and mixed in an appropriate amount so as to obtain the following composition: SiO 2 / B 2 o 3 / K 2 O=79 / 19 / 2 (wt.%). The resulting mixture is melted at 1500 to 1700 degrees Celsius to obtain molten glass. The molten glass was quenched using a quenching roller and a base, whereby borosilicate glass powder having an average particle size of 3.0 μm was obtained. Simultaneously, the crystalline SiO was ground in a ball mill 2 powder, resulting in SiO with an average particle size of 3.0 μm 2 powder. In addition, the thus obtained borosilicate glass powder and crystalline SiO are sprayed in a high-temperature atmosphere 2 powder and quench.
[0090] In this case, the number of quenching steps was varied in the range from 1 to 5, whereby borosilicate glass powder and crystalline SiO 2 powder, which has a different sha...
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