Patent ID: 6624839
Filing Date: 2003-09-23
Classification: B41J,H01L

Abstract:
An apparatus for exposing a photosensitive material, said photosensitive material having a light receiving surface and being exposed by radiation impinging on said light receiving surface, said apparatus comprising:a substrate having a substantially planar first surface oppositely spaced apart from a substantially planar second surface; and an individually addressable Organic Light Emitting Diode (OLED) structure, said structure comprising at least one of a plurality of triplets of elongated arrays of individually addressable Organic Light Emitting Diode (OLED) elements, said Organic Light Emitting Diode (OLED) structure being deposited onto the first surface of said substrate; and wherein said OLED elements emit light over a broad range of wavelengths, any said OLED element in said at least one said plurality of triplets of said elongated arrays has a characteristic surface dimension which is substantially the same for all OLED elements in the array and from which an OLED center point can be defined; and a substantively transparent layer deposited onto the OLED structure, said layer having a light receiving surface in effective light transmission relation to the OLED structure, said light receiving surface oppositely spaced apart from a light emitting surface; and at least one of a plurality of triplets of elongated arrays of color filter elements, and each element in each said triplet being capable of transmitting radiation in a distinct wavelength range different from the distinct wavelength range of the other two color filters in the same triplet, having a substantially planar color filter light receiving surface oppositely spaced apart from and substantively parallel to a substantially planar color filter light emitting surface, any color filter element in the array having a characteristic surface dimension which is substantially the same for all color filter elements in the array and from which a center point can be defined, said color filter being formed from at least one color filter material, said at least one color filter material to form said at least one of a plurality of triplets of elongated color filter arrays being deposited onto and in effective light transmission relation to the light emitting surface of said substantively transparent layer; and wherein the color filter center points for any said color filter array being substantially collinear and aligned with the OLED center points for the OLED array located in effective light transmission relation to said color filter array; and wherein each OLED element in the triplet is in effective light transmission relation to the light receiving surface of one color filter array in the triplet thereby constituting OLED color filter array set, each set in the triplet being aligned in substantially parallel spaced relation with respect to each other set in the triplet, each color filter array in each triplet having elements that are capable of transmitting radiation in a distinct wavelength range different from the distinct wavelength range of the other two arrays in the triplet, each triplet being aligned in substantially parallel spaced relation with respect to any other triplet; and a plurality of driver control circuits for selectively controlling the energizing of said Organic Light Emitting Diode (OLED) elements; and means for electrically connecting selected ones of said individually addressable light emitting elements in said OLED structure to said selected ones of said driver control circuits.