Light emission display arrangements

A panel display comprising:

• a) a substrate having an array of addressable light emitting devices, the array having a light emitting display side facing in a first direction;
• b) an input means for inputting an arbitrary image;
• c) drive circuitry for said array of light emitting devices for driving said light emitting devices to display the arbitrary image;
• d) electrical connections from said light emitting devices to the drive circuitry, said electrical connections extending from a rear side of the substrate in a second direction opposed to the first direction;
• e) a heat sink comprising a heat transporting plate having a plurality of holes defined therein through which said electrical connnections pass;
• f) said drive circuitry being spaced apart from said array in such a manner that at least one cooling channel is defined between said array and said drive circuitry for extraction of heat from said array and said drive circuitry by passage of a cooling fluid through the cooling channel,
• g) said heat sink being disposed in the region of the rear side of said array of light emitting devices opposite to said display side, and
• h) wherein the cooling channel is sealed with respect to both the array of addressable light emitting devices, and with respect to the drive circuitry for said array of light emitting devices.