Phosphor sheet, luminous body using same, light source unit, display, and manufacturing method of luminous body
A phosphor sheet and phosphor technology, applied in the field of phosphor sheets, can solve problems such as the limitation of luminous color, achieve the effect of improving high brightness and realizing color reproducibility
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Embodiment 1～6）
[0258] (Examples 1 to 6) - Influence of particle size of phosphor -
[0259] In Examples 1-6, the phosphor sheet|seat which has the phosphor layer of the composition shown in Table 2 was produced, and the porosity was measured by the method mentioned above. In addition, luminous bodies (light-emitting devices) were produced using the phosphor sheets obtained in Examples 1 to 6, and the chromaticity, total luminous flux, total luminous flux retention rate, and color reproduction range were measured by the above-mentioned method. These measurement results are shown in Table 3. Referring to Tables 2 and 3, it can be seen that when the phosphor sheet according to the present invention is used, Examples 1 to 6 can all obtain luminous bodies with excellent color reproducibility and high luminous flux. In addition, as D50 of the red phosphors T2 to T6 shown in Table 1, when the D50 of the red phosphors is 10 μm or more, the total luminous flux is further improved, and as shown in D1...
Embodiment 7～13）
[0264] (Examples 7 to 13) - Influence of Phosphor Concentration -
[0265] In Examples 7-13, the phosphor sheet|seat which has the phosphor layer of the composition shown in Table 4 was produced, and the porosity was measured by the method mentioned above. In addition, phosphor sheets obtained in Examples 7 to 13 were used to produce light emitters, and the chromaticity, total luminous flux, total luminous flux retention rate, and color reproduction range were measured by the above-mentioned method. These measurement results are shown in Table 5. In addition, Table 4 shows the composition of Example 6 again, and Table 5 shows the result of Example 6 again. It can be known from Table 4 and 5 that the higher the concentration of phosphors such as red phosphor T6 and green phosphor is, the higher the total luminous flux retention rate is.
[0266] [Table 4]
[0267] .
[0268] [table 5]
[0269] .
Embodiment 14～17）
[0270] (Examples 14 to 17) -Effect of silicone fine particles-
[0271] In Examples 14-17, the phosphor sheet|seat which has the phosphor layer of the composition shown in Table 6 was produced, and the porosity was measured by the method mentioned above. In addition, illuminants were fabricated using the phosphor sheets obtained in Examples 14 to 17, and the chromaticity, total luminous flux, total luminous flux retention rate, and color reproduction range were measured by the above-mentioned method. These measurement results are shown in Table 7. As can be seen from Tables 6 and 7, the chromaticity deviation (σ(Cx)) was further improved by containing the silicone fine particles.
[0272] [Table 6]
[0273] .
[0274] [Table 7]
[0275] .
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