Patent ID: 8681140
Filing Date: 2014-03-25
Classification: G02F,G06F

Abstract:
1. A display device comprising: a plurality of display units in a housing having a front surface and a rear surface opposed to the front surface; and a power supply IC provided in common for the plurality of display units, controlling a voltage supplied to the plurality of display units, wherein the power supply IC comprises a unit for determining which of the plurality of display units is to be supplied with the voltage, wherein a first one of the plurality of display units comprises a first substrate, a first thin film transistor over the first substrate, and a light emitting element comprising first and second electrodes and an electroluminescent layer provided between the first and second electrodes, and wherein the first thin film transistor is electrically connected to one of the first and second electrodes, wherein a second one of the plurality of display units comprises a second substrate, a second thin film transistor over the second substrate, and a liquid crystal layer over the second thin film transistor, wherein the first substrate is adjacent to the second substrate, wherein the first one of the plurality of display units has a first display screen on the front surface, and the second one of the plurality of display units has a second display screen on the rear surface, wherein light from the light emitting element is emitted in directions of the first display screen and the second display screen, and wherein the light emitted in the direction of the second display screen is used as a light source of the second one of the plurality of display units.