Display operable in both reflective and transmissive modes

摘要

A display apparatus includes a first display panel with a plurality of first pixels, a second display panel facing the first display panel and having a plurality of second pixels, a light reflective polarizer, and a backlight unit. The light reflective polarizer is interposed between the first and second display panels to transmit light polarized in a first direction, and reflect light polarized in a second direction substantially perpendicular to the first direction. The backlight unit is arranged proximate to the second display panel to supply light to the first and second display panels. The first display panel displays an image by using reflected ambient light, and the second display panel displays an image by using light from the backlight unit.

主权项

1. A display apparatus comprising:
a first display panel comprising a plurality of first pixels, the first display panel further comprising a first substrate, a second substrate facing the first substrate, and a first liquid crystal layer interposed between the first and second substrates; a second display panel facing the first display panel and comprising a plurality of second pixels, the second display panel further comprising a third substrate facing the second substrate, a fourth substrate facing the third substrate, and a second liquid crystal layer interposed between the third and fourth substrates; a reflective polarizer interposed between the first and second display panels and positioned between the second and third substrates, so as to transmit a light polarized in a first direction and reflect a light polarized in a second direction substantially perpendicular to the first direction; a backlight unit positioned a rear surface or a lateral surface of the second display panel to supply a light to the first and second display panels; a first light absorbing polarizer provided on the first substrate; a second light absorbing polarizer provided on the fourth substrate; a first alignment layer interposed between the first substrate and the first liquid crystal layer; a second alignment layer interposed between the first liquid crystal layer and the second substrate; a third alignment layer interposed between the third substrate and the second liquid crystal layer; and a fourth alignment layer interposed between the second liquid crystal layer and the fourth substrate.