Luminescent layer and light-emitting semiconductor device
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United States of America Patent
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Jun 25, 2019
Grant Date -
N/A
app pub date -
Jul 5, 2016
filing date -
Jul 5, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A chip-type light-emitting semiconductor device includes: a substrate 4; a blue LED 1 mounted on the substrate 4; and a luminescent layer 3 made of a mixture of yellow/yellowish phosphor particles 2 and a base material 13 (translucent resin). The yellow/yellowish phosphor particles 2 is a silicate phosphor which absorbs blue light emitted by the blue LED 1 to emit a fluorescence having a main emission peak in the wavelength range from 550 nm to 600 nm, inclusive, and which contains, as a main component, a compound expressed by the chemical formula: (Sr1-a1-b1-xBaa1Cab1Eux)2SiO4 (0≤a1≤0.3, 0≤b1≤0.8 and 0
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International Classification(s)
- 2016 Application Filing Year
- C09K Class
- 3076 Applications Filed
- 2094 Patents Issued To-Date
- 68.08 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C09K Class
- 0 % this patent is cited more than
- 6 Age
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