基本信息:
- 专利标题： OPTICAL FILM, BACKLIGHT, AND DISPLAY
- 申请号：PCT/IB2022/055654 申请日：2022-06-17
- 公开(公告)号：WO2022269437A1 公开(公告)日：2022-12-29
- 发明人： SOUSA, Matthew E. , PETAJA, Jason S. , RENSTROM, Anthony M. , KOLB, William B. , TAYLOR, Robert D. , FORSYTHE, Benjamin J.
- 申请人： 3M INNOVATIVE PROPERTIES COMPANY
- 申请人地址： 3M Center
- 专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人地址： 3M Center
- 代理机构： MOSHREFZADEH, Robert S., et al.
- 优先权： US63/202,749 2021-06-23
- 主分类号： G02B5/22
- IPC分类号： G02B5/22 ; G02B5/02 ; G02B5/30
摘要：
An optical film includes an optically diffusive layer including a plurality of nanoparticles dispersed between and across opposing first and second major surfaces thereof. The plurality of nanoparticles has a nanoparticle size distribution including distinct first and second peaks at respective nanoparticle sizes d1 and d2, wherein 1.5 ≤ d2/d1 ≤ 10. The optically diffusive layer includes a polymeric material bonding the nanoparticles to each other. For a substantially collimated substantially normally incident light, the optical film has, in a visible wavelength, an average specular transmittance VTs and an average total transmittance VTt, and in an infrared wavelength range, an average total transmittance ITt and an average specular transmittance ITs, wherein 0.3 ≤ (VTs/VTt) ≤ 0.7, (VTs/ITs) ≤ 0.25, and (ITs/ITt) ≥ 0.7.