Glass fluorescent powder slice with multi-layer structure and preparation method therefor, and light-emitting device
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United States of America Patent
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Jul 6, 2021
Grant Date -
Feb 23, 2017
app pub date -
Mar 27, 2015
filing date -
Mar 28, 2014
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Abstract
A multi-layer glass phosphor powder sheet and its preparation method, and a light-emitting device. The preparation method for the multi-layer glass phosphor powder sheet includes: mixing a first optical functional material, a glass powder and an organic carrier to obtain a first slurry, and mixing a second optical functional material, the glass powder and the organic carriers to obtain a second slurry; coating the first slurry on a first substrate, and drying it at a first temperature so that at least some of the organic carrier is volatilized, to obtain a first functional layer, the first temperature being lower than a softening point of the glass powder; coating the second slurry on the surface of the first functional layer, to obtain a second functional layer; and sintering the first substrate on which the functional layers are coated at a second temperature, to obtain the multi-layer glass phosphor powder sheet.
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