So-called OLED organic light-emitting diode device, (100 to 600') comprising a transparent substrate with a first main face comprising a stack comprising in this order, starting from said first face: - a lower electrode forming an anode, which is transparent, anode of given sheet resistance R1, - an organic light-emitting system above the anode, - an upper electrode forming a cathode, above the organic light-emitting system, comprising an electroconducting layer, cathode of given sheet resistance R2, the ratio r = R2/R1 ranging from 0.1 to 5, the anode, the organic light-emitting system and the cathode thus defining a, so-called active, common zone, the OLED device comprising, - a first so-called tailored anode contact, - a second so-called tailored anode contact, spaced from and facing the first tailored contact, the first and second tailored anode contacts (41, 41') forming two opposite sides of a first region of the anode, termed the first anodic region (40, 40'), furthermore delimited by a first so-called free edge of the active zone and by a second so-called free edge of the active zone opposite from the first free edge, - a first cathode electrical contact, which is: - arranged above the active zone, partially covering the region of the cathode above the first anodic region, - of given surface, termed the contact surface, smaller than the surface area of the active zone and than the surface area of the first anodic region, - offset from the first tailored anode contact and from the second tailored anode contact, at every point of the contact surface for each point B1 of the first tailored contact, on defining a distance D1 between said point B1 and the orthogonal projection, in the plane passing through B1 parallel to the anode, of that point C1 of the contact surface which is closest to said point B1, and on defining a distance L1 between said point B1 and a point X1 of the second tailored contact, passing through the orthogonal projection of C1 in the plane passing through B1 parallel to the anode, then the following criteria are defined: - if 0.1 ≤ r < 1.75, then 10% < D1/L1 < 50%, - if 1.75 ≤ r < 2.5, then 10% < D1/L1 < 45%, - if 2.5 ≤ r < 3, then 10% < D1/L1 < 40%, - if 3 ≤ r ≤ 5, then 10% < D1/L1 < 35%, for each point B2 of the second tailored contact, on defining a distance D2 between said point B2 and the orthogonal projection, in the plane passing through B2 parallel to the anode, of that point C2 of the contact surface which is closest to said point B2, and on defining a distance L2 between said point B2 and a point X2 of the first tailored contact, passing through the orthogonal projection of C2 in the plane passing through B2 parallel to the anode, then the following criteria are defined: - if 0.1 ≤ r < 1.75, then 10% < D2/L2 < 50%, - if 1.75 ≤ r < 2.5, then 10% < D2/L2 < 45%, - if 2.5 ≤ r < 3, then 10% < D2/L2 < 40%, - if 3 ≤ r ≤ 5, then 10% < D2/L2 < 35%, and the OLED device comprises above the organic light-emitting system, on moving away from the first face, a reflector covering the active zone. - a lower electrode forming an anode, which is transparent, anode of given sheet resistance R1, - an organic light-emitting system above the anode, - an upper electrode forming a cathode, above the organic light-emitting system, comprising an electroconducting layer, cathode of given sheet resistance R2, the ratio r = R2/R1 ranging from 0.1 to 5, - a first so-called tailored anode contact, - a second so-called tailored anode contact, spaced from and facing the first tailored contact, - a first cathode electrical contact, which is: - arranged above the active zone, partially covering the region of the cathode above the first anodic region, - of given surface, termed the contact surface, smaller than the surface area of the active zone and than the surface area of the first anodic region, - offset from the first tailored anode contact and from the second tailored anode contact, at every point of the contact surface - arranged above the active zone, partially covering the region of the cathode above the first anodic region, - of given surface, termed the contact surface, smaller than the surface area of the active zone and than the surface area of the first anodic region, - offset from the first tailored anode contact and from the second tailored anode contact, at every point of the contact surface - if 0.1 ≤ r < 1.75, then 10% < D1/L1 < 50%, - if 1.75 ≤ r < 2.5, then 10% < D1/L1 < 45%, - if 2.5 ≤ r < 3, then 10% < D1/L1 < 40%, - if 3 ≤ r ≤ 5, then 10% < D1/L1 < 35%, - if 0.1 ≤ r < 1.75, then 10% < D2/L2 < 50%, - if 1.75 ≤ r < 2.5, then 10% < D2/L2 < 45%, - if 2.5 ≤ r < 3, then 10% < D2/L2 < 40%, - if 3 ≤ r ≤ 5, then 10% < D2/L2 < 35%,