47.5: An improvement method to achieve switchable anti‐spy display based on ECB mode

In this article, we propose an switchable anti‐spy display device, which has two modes. And we creatively propose to use a brightness enhancement film with polarization function to improve the brightness of the vertical view. In the anti‐spy mode, the display content cannot be clearly recognized by human eyes on the left and right side, but it can be recognized in other directions. In the sharing mode, the display contents can be seen clearly from all perspectives. The anti‐spy display device includes an anti‐spy module and a display module, which is used to display the information, and the anti‐ spy module is used for switching between the sharing mode and the anti‐spy mode. This anti‐spy display device can protect personal privacy and share information with friends or colleagues.