Organic light emitting display apparatus

An organic light-emitting display device, comprising:

• a first substrate defined by a plurality of pixels each including a pixel area and a transmittance area adjacent to the pixel area, the pixel area emitting light in a first direction and the transmittance area transmitting external light;
• a second substrate facing the first substrate and encapsulating the plurality of pixels on the first substrate and the second substrate including a pair of optical pattern units for transmitting or blocking the external light for each transmittance area according to coded patterns corresponding to the plurality of pixels;
• and
• a pair of sensor units corresponding to the pair of optical pattern units, the pair of sensor units being arranged in a second direction that is opposite to the first direction in which the light is emitted, the pair of sensor units receiving the external light passing through the pair of optical pattern units.
• wherein the pair of optical pattern units is formed in a center of the second substrate.