Display apparatus incorporating reflective and absorptive polarizers

摘要

This disclosure provides systems, methods and apparatus for reducing ambient light reflections from a surface of a display device in a power efficient manner. The display device includes a reflecting circular polarizer (RCP) and an absorbing circular polarizer (ACP) having the same polarity. The RCP provides light recycling functionality, while the ACP provides ambient light reflection suppression. In some implementations, the light generated by the display device is polarized by the RCP before it is incident on the ACP, which is located at the front of the display device. Because the polarities of the RCP and the ACP are the same, the ACP substantially passes all of the incident polarized light towards the front of the display device.

主权项

1. An apparatus, comprising:
a front facing light reflective layer; a backlight disposed in front of the front facing light reflective layer; an aperture layer disposed in front of the backlight and configured to:
pass light through apertures defined in the aperture layer towards the front of the display apparatus, andreflect light not passing through the apertures back towards the rear of the display apparatus; a reflecting circular polarizing (RCP) layer disposed in front of the backlight and configured to:
pass light having a first circular polarity received from the rear of the apparatus, andreflect light having a polarity different from the first circular polarity received from the rear of the apparatus back toward the rear of the apparatus; and an absorbing circular polarizing (ACP) layer, disposed proximate a front surface of the apparatus and in front of the reflecting circular polarizing layer, configured to pass light having the first circular polarity and to absorb light having a polarity different from the first circular polarity.