Patent ID: 9709844
Date: 2017-07-18
CPC Classifications: G02F,H01L

Claim:
1. A display apparatus capable of controlling light transmittance thereof, the display apparatus comprising: a transparent display device including a first substrate having a first surface on which a pixel is positioned and a second surface opposite to the first surface, the pixel having a first region with an organic emission layer (organic EML) and a second region, the second region being adjacent to the first region and transmitting light; a second substrate facing the first surface of the first substrate; a first circular polarizer; a second circular polarizer; and a transmittance adjusting device comprising the first substrate, a third substrate facing the second surface of the first substrate, and a liquid crystal layer between the second surface of the first substrate and a surface of the third substrate, the transmittance adjusting device for adjusting the light transmittance of the display apparatus, the light transmittance of the display apparatus being determined based on an amount of light incident from external to the display apparatus and passing through the second region of the pixel, wherein the transparent display device and the transmittance adjusting device are between the first and second circular polarizers, and share the first substrate as a single layer, and wherein the second region of the pixel does not overlap a semiconductor device.