An image processing apparatus converts an input data indicative of a fish-eye image into an output data indicative of a plane image. The peripheral portion includes a first step surface, a second step surface, and a first connecting surface interconnecting the first step surface and the second step surface. A recess is etched to a predetermined depth into the conductive material, and the second metallic barrier material is deposited and removed outside the channel. The first auxiliary structure includes a first doping pattern, a first resonance auxiliary pattern, a second doping pattern and a second resonance auxiliary pattern. For a contacts providing a tuning fork type contact 2 that attains a contact state by inserting a male contact 4 between a pair of beams 6a and 6b provided on a female contact 6, in the connected state, male contact 4 and female contact 6 are arranged so as to maintain a state wherein the width direction of the male contact is angled relative to the direction of separation of the beams 6a and 6b. Each pixel comprises at least one layer of organic light emitting material 46, and an transparent electrode 48 in contact with the organic layer on a side thereof remote from the substrate, the electrode comprising an electrically conducting polymer 50.