US 12,411,377 B2
Scattering film, display module and display device
Wenbo Dong, Beijing (CN); Jianming Liu, Beijing (CN); Wei Kang, Beijing (CN); Xunwang Yu, Beijing (CN); and Lu Niu, Beijing (CN)
Assigned to Hefei BOE Display Technology Co., Ltd., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/913,213
Filed by Hefei BOE Display Technology Co., Ltd., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Oct. 26, 2021, PCT No. PCT/CN2021/126239
§ 371(c)(1), (2) Date Sep. 21, 2022,
PCT Pub. No. WO2022/222402, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110447120.6 (CN), filed on Apr. 23, 2021.
Prior Publication US 2023/0341722 A1, Oct. 26, 2023
Int. Cl. G02F 1/1335 (2006.01)
CPC G02F 1/133504 (2013.01) [G02F 1/133528 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display module, comprising: a display panel and a scattering film on a light-emitting side of the display panel, wherein the display panel comprises a bearing layer configured to bear the scattering film and comprising a light transmissive material, and the scattering film comprises:
a scattering particle layer on a bearing layer, the scattering particle layer comprising a plurality of scattering particles and having a surface away from the bearing layer that is a curved surface, wherein 90% or more of the scattering particles in the scattering particle layer have a particle size larger than or equal to 5 μm and less than or equal to 30 μm,
wherein the bearing layer comprises:
a polarization layer configured to change a polarization state of light passing through the polarization layer,
a transparent base material layer, the scattering particle layer being disposed on a surface of the transparent base material layer away from the polarization layer, and
an optical adhesive layer bonded between the transparent base material layer and the polarization layer, the optical adhesive layer having a thickness between 0.15 mm˜0.4 mm,
wherein the scattering particle layer further comprises a dielectric material layer through which the scattering particles are fixed to a surface of the bearing layer, and the dielectric material layer has a thickness smaller than or equal to one half of an average particle size of the plurality of scattering particles.