Light control film with asymmetric transmittance profile
By employing a layer-by-layer coating and selective removal process on the light control film, an asymmetric transmittance distribution is formed through etching, which solves the problem of low transmittance of existing light control films and achieves a high-efficiency improvement in the transmission efficiency of light control films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 3M INNOVATIVE PROPERTIES CO
- Filing Date
- 2024-12-13
- Publication Date
- 2026-07-17
AI Technical Summary
The existing light control film has an asymmetrical transmittance distribution, resulting in low transmission efficiency. Traditional methods, such as backfilling trapezoidal grooves with black resin, produce louvers with an efficiency of less than about 35%.
By employing a layer-by-layer coating and selective removal process, an asymmetric transmittance distribution is formed on the structured surface of the photocontrol film through directional etching. The etching process creates different coating thicknesses on the structured surface of the photocontrol film, thereby improving transmission efficiency.
This significantly improves the transmission efficiency of the light control film, reaching approximately 60%, far exceeding the 35% of the traditional method.
Smart Images
Figure CN122422784A_ABST