On January 15, 2024, it was reported that according to the announcement of the China National Intellectual Property Administration, Changzhou Amarton Co., Ltd. obtained a glass diffusion plate named "a full fitting DBEF film to prevent color difference in splicing", with the authorization announcement number of CN220340438U and the application date of July 2023.
The patent abstract shows that the present utility model belongs to the technical field of glass diffusion plates, and specifically relates to a glass diffusion plate that is fully bonded with DBEF film material to prevent splicing color difference. This fully bonded DBEF film material prevents splicing color difference. The glass diffusion plate includes a glass substrate, with an upper diffusion coating on the upper side of the glass substrate and a lower diffusion coating on the lower side of the glass substrate, The upper side of the upper diffusion coating is equipped with an OCA optical adhesive layer, and a DBEF film layer is set on the OCA optical adhesive layer. A polarizing film layer is set on the DBEF film layer. This fully bonded DBEF film material prevents splicing color difference in the glass diffusion plate. By attaching a layer of polarizing film on the DBEF film material on the light emitting surface of the fully bonded glass diffusion plate, the polarization effect of the DBEF film material is improved, and the opposite polarized light leaked from the DBEF film material is repeatedly utilized by the polarizing film to reduce color difference.