公开(公告)号：US20160049562A1

公开(公告)日：2016-02-18

申请号：US14783239

申请日：2014-01-17

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yasuhisa INADA ,  Kazuyuki YAMAE ,  Akira HASHIYA

IPC: H01L33/58 ,  H01L51/52 ,  H01L33/22

CPC classification number: H01L33/58 ,  G02B5/0221 ,  H01L33/22 ,  H01L51/5275 ,  H01L2251/5315 ,  H01L2251/5369

Abstract: An illuminator includes a light-emitting element and a light extraction sheet which transmits light occurring from the light-emitting element. The light-emitting element includes a first electrode having a light transmitting property, a second electrode, and an emission layer between the first and second electrodes. The light extraction sheet includes a light-transmitting substrate having a first principal face and a second principal face, a first light extraction structure on the first principal face side of the light-transmitting substrate, and a second light extraction structure on the second principal face side of the light-transmitting substrate. The first light extraction structure includes a low-refractive index layer and a high-refractive index layer. The second light extraction structure is arranged so that light which is transmitted through the light-transmitting substrate and arrives at an incident angle of 40 degrees to 60 degrees has an average transmittance of 42% or more.

Abstract translation: 照明器包括发光元件和透光从发光元件发出的光的光提取片。 发光元件包括具有透光性的第一电极，第二电极和在第一和第二电极之间的发射层。 光提取片包括具有第一主面和第二主面的透光性基板，在透光性基板的第一主面侧的第一光提取结构以及第二主面上的第二光提取结构 侧的透光性基板。 第一光提取结构包括低折射率层和高折射率层。 第二光提取结构被布置成使得透射透光基板并以40度至60度的入射角到达的光的平均透射率为42％以上。