Patent ID: 6967435

Claim:
An active matrix organic electroluminescent display device, comprising: a first substrate and a second substrate facing and spaced apart from each other; a thin film transistor on an inner surface of the first substrate; a first electrode connected to the thin film transistor; an organic electroluminescent layer on the first electrode; a second electrode on the organic electroluminescent layer; a passivation layer on the second electrode; a black matrix on an inner surface of the second substrate, the black matrix includes a plurality of open portions; a color filter layer at the plurality of open portions, the color filter layer includes first, second, and third sub-color filters; a color changing layer on the color filter layer, the color changing layer includes a first color changing medium on the first sub-color filter and a second color changing medium on the second sub-color filter; an overcoat layer on the color changing layer; and an adhesive film between the passivation layer and the overcoat layer, wherein a sum of a thickness of the first color changing medium and a thickness of the first sub-color filter is substantially equal to a thickness of the third sub-color filter.