Privacy displays operating in two luminosity modes

A method of operating a display device, comprising:

• receiving input to selectively switch between a privacy mode and a sharing mode with a polymer-dispersed liquid crystal (PDLC) layer;
• and
• when in a sharing mode and based on a threshold luminance level, selectively switching between a first luminance mode and a second luminance mode;
• wherein a minimal luminance of the second luminance mode is 1.5 times or greater than a maximum luminance of the first luminance mode.

A computer program product for operating a display device, the computer program product comprising:

• a computer readable storage medium comprising computer usable program code embodied therewith, the computer usable program code to, when executed by a processor:
• receiving input to selectively switch between a privacy mode and a sharing mode with a polymer-dispersed liquid crystal (PDLC) layer;
• when in a sharing mode and based on a threshold luminance level, selectively switching between a first luminance mode and a second luminance mode;
• and
• set a minimal luminance of the second luminance mode at 1.5 times or greater than a maximum luminance of the first luminance mode.