Title:
ELECTRONIC DEVICE AND PREPARATION METHOD FOR COMPOSITE FILM
Document Type and Number:
WIPO Patent Application WO/2023/193654
Kind Code:
A1
Abstract:
An electronic device and a preparation method for a composite film (2). The electronic device comprises a screen (1) and the composite film (2); the screen (1) comprises a light-emitting surface (11); the composite film (2) is arranged on the side of the light-emitting surface (11) of the screen (1); the composite film (2) comprises a polarizing layer (21) and a first phase delay layer (22) that are stacked; the first phase delay layer (22) is arranged between the polarizing layer (21) and the screen (1); the polarizing layer (21) is used for transmitting polarized light of which the polarization direction is parallel to a light-transmitting axis of the polarizing layer (21), and absorbing polarized light of which the polarization direction is parallel to an absorption axis of the polarizing layer (21); the first phase delay layer (22) is used for transmitting unpolarized light and changing the polarization state of polarized light, wherein the polarizing layer (21) and the first phase delay layer (22) are bonded by means of a first glue layer (24), the refractive index of the first glue layer (24) is n1, a≤n1≤b, one of a and b is the refractive index of the polarizing layer (21), and the other one is the refractive index of the first phase delay layer (22). By reducing non-functional film layers and adjusting the refractive index of glue, the reflectivity between film layers are effectively reduced, and the thickness of the composite film (2) is reduced, thereby facilitating the fitting of curved surfaces.
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Inventors:
ZHENG XIAOWEN (CN)
Application Number:
PCT/CN2023/085197
Publication Date:
October 12, 2023
Filing Date:
March 30, 2023
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B5/30; G02B27/01
Foreign References:
| JP2001249222A | 2001-09-14 | |||
| JP2003307622A | 2003-10-31 | |||
| CN110161699A | 2019-08-23 | |||
| CN104838296A | 2015-08-12 | |||
| US20050200966A1 | 2005-09-15 | |||
| CN212391677U | 2021-01-22 |
Attorney, Agent or Firm:
UNI-INTEL PATENT AND TRADEMARK LAW FIRM (CN)
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