Backlight for display
    3.
    发明授权

    公开(公告)号:US11921373B2

    公开(公告)日:2024-03-05

    申请号:US17797480

    申请日:2021-02-01

    IPC分类号: G02F1/13357 G02F1/1335

    摘要: A backlight includes an extended light source adapted to emit light. A reflective polarizer is disposed on the extended light source, such that for substantially normally incident light and for at least a first wavelength in a range from about 420 nanometer (nm) to about 650 nm, the reflective polarizer reflects at least 60% of the incident light having a first polarization state and transmits at least 60% of the incident light having an orthogonal second polarization state. A first prismatic film is disposed between the extended light source and the reflective polarizer. A retarder layer is disposed between the reflective polarizer and the first prismatic film, such that for substantially normally incident light at a wavelength of about 550 nm, the retarder layer has a retardance nW, where n is an integer ≥1 and W is a wavelength between about 160 nm and about 300 nm.

    Method of producing a component of a device, and the resulting components and devices

    公开(公告)号:US11335551B2

    公开(公告)日:2022-05-17

    申请号:US16663006

    申请日:2019-10-24

    摘要: The present method comprises providing a flexible web substrate (e.g., polymeric flexible web substrates) that forms at least part of a component of a device, coating so as to wet-out on and cover all or a substantial portion of a major surface on one side or both sides of the flexible web substrate with flowable polymeric material, while the flexible web substrate is moving in a down-web direction, and solidifying the polymeric material so as to form one cleaning layer on the major surface of one side or both sides of the flexible web substrate. The present invention can be utilized in a continuous in-line manufacturing process. In applications of the present invention where the flexible web substrate will not form a component of a device, the present invention broadly provides a method for cleaning particles from a flexible web of indefinite length. Each cleaning layer forms a substantially adhesive bond to the major surface that is readily removable without damaging or leaving a substantial residue of cleaning layer material on the major surface. A substantial number of the particles that were on this major surface are captured by and removable with the cleaning layer.

    Light source and display system incorporating same
    10.
    发明授权
    Light source and display system incorporating same 有权
    光源与显示系统相结合

    公开(公告)号:US09410677B2

    公开(公告)日:2016-08-09

    申请号:US14579951

    申请日:2014-12-22

    摘要: Light sources are disclosed. A disclosed light source includes an optically reflective cavity that includes an input port for receiving light and an output port for transmitting light, a lamp that is disposed at the input port, and an optical stack that is disposed at the output port. The optical stack includes a forward scattering optical diffuser that is disposed at the output port and has an optical haze that is not less than about 20%, and an optical film that is disposed on the optical diffuser. The optical film enhance total internal reflection at the interface between the optical film and the optical diffuser. The optical film has an index of refraction that is not greater than about 1.3 and an optical haze that is not greater than about 5%. The optical stack also includes a reflective polarizer layer that is disposed on the optical film. Substantial portions of each two neighboring major surfaces in the optical stack are in physical contact with each other.

    摘要翻译: 公开了光源。 所公开的光源包括光反射腔,其包括用于接收光的输入端口和用于传输光的输出端口,设置在输入端口处的灯以及设置在输出端口处的光学堆叠。 光学堆叠包括设置在输出端口并具有不小于约20%的光学雾度的前向散射光学漫射器,以及设置在光学漫射器上的光学膜。 光学膜增强了在光学膜和光学扩散器之间的界面处的全内反射。 光学膜的折射率不大于约1.3,光学雾度不大于约5%。 光学堆叠还包括设置在光学膜上的反射偏振器层。 光学堆叠中每两个相邻的主要表面的实质部分彼此物理接触。