| abstract |
Even if a glass sealing portion is formed in a rectangular parallelepiped shape, a decrease in light extraction efficiency is suppressed. An LED element, an element mounting substrate on which the LED element is mounted, and zirconia particles that seal the LED element on the element mounting substrate and diffuse light emitted from the LED element. A glass sealing portion 6 made of dispersed glass and formed in a rectangular parallelepiped shape, and light emitted from the LED element 2 that enters the zirconia particles 7 is diffused in the glass sealing portion 6. After that, the light is incident on the surface of the glass sealing portion 6. [Selection] Figure 1 |