Sealing material and image display using such sealing material
A technology for image display and sealing materials, which is applied in the directions of image/graphic display tubes, exhaust sealing, thin material processing, etc., and can solve problems such as inability to maintain high vacuum properties, difficulty in manufacturing large-size image displays, and continuity damage.
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example 1
[0030] To form the FED, first and second substrates each consisting of a glass plate of 65 cm long and 110 cm wide were prepared, and a glass spacer 13 in the form of a matrix frame was attached to the periphery of the inner surface of one of them with frit glass An edge portion, such as a second substrate. Then, using a vacuum vapor deposition apparatus, Cr as a first metal layer is formed to a thickness of 0.4 μm on the upper surface of the spacer 13 and the peripheral edge portion of the inner surface of the first substrate 11, that is, opposite to the spacer 13. predetermined location. Subsequently, iron as a second metal layer was formed to a thickness of 0.4 μm. In addition, Ag was continuously formed as a metal protective layer to a thickness of 0.3 μm on the second metal layer without breaking the vacuum. Thereafter, an alloy consisting of 55% by weight of Bi and 45% by weight of Sn as a sealing material was melted in a nitrogen atmosphere, and diffused on the Ag met...
example 2
[0034] To form the FED, first and second substrates each consisting of a glass plate 65 cm long and 110 cm wide were prepared. Subsequently, using a vapor deposition apparatus using austenitic stainless steel (SUS 304) as an evaporation source, a metal layer of Cr was formed at a predetermined position where the glass substrates faced each other, that is, on the inner surface of each glass substrate in this case. On the peripheral edge portion, it is formed to a thickness of 0.6 μm. Subsequently, Cu was formed as a metal protective layer to a thickness of 0.4 μm on the metal layer. An alloy paste as a sealing material composed of 60% by weight of Bi and 45% by weight of Sn and containing a decomposing volatile binder was spread to a thickness of 0.3 mm on each metal protective layer. Then, a lead wire (1.5 mm in diameter) of Ag-plated Fe-37% by weight Ni alloy was provided as a spacer in the form of a frame on one of the sealing materials of the glass substrates.
[0035] En...
example 3
[0037] First and second substrates each consisting of a glass plate 65 cm long and 110 cm wide were prepared. Then, using a vapor deposition apparatus using 13Cr steel as an evaporation source, a metal layer of Cr was formed to a thickness of 0.6 μm at a predetermined position where the glass substrates faced each other, that is, the peripheral edge of the inner surface of each glass substrate in this case. partly on. Subsequently, Ag was formed as a metal protective layer to a thickness of 0.4 μm on the metal layer. Thereafter, a Ti lead wire having a diameter of 1.5 mm coated with a 0.2 mm thick alloy composed of 70% by weight Bi and 30% by weight In was provided as a spacer on the metal protective layer of one of the glass substrates.
[0038] The first and second substrates are kept horizontal at intervals of 100mm, and at 5×10 -6 Pa vacuum under heat degassing treatment. When 200° C. was reached in the cooling process, the two substrates were joined together at a prede...
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Abstract
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