| 摘要 |
An OLED device includes an anode, which is transparent, anode of a sheet resistance R1, a cathode of sheet resistance R2, the ratio r=R2/R1 ranging from 0.1 to 5, a first anode contact and a second anode contact, spaced from and facing the first anode contact, and a first cathode electrical contact, which is: arranged above the active zone, offset from the first anode contact and from the second anode contact, at every point of the contact surface. |
| 主权项 |
1. An organic light-emitting diode device, comprising:
a transparent substrate with a first main face comprising a stack comprising in this order, starting from said first main face:
a lower electrode forming an anode, which is transparent, the anode having a sheet resistance R1,an organic light-emitting system above the anode,an upper electrode forming a cathode, arranged above the organic light-emitting system, comprising an electroconducting layer, the cathode having a sheet resistance R2, the ratio r=R2/R1 ranging from 0.1 to 5, the anode, the organic light-emitting system and the cathode defining an active common zone, a first anode contact, a second anode contact, spaced from and facing the first anode contact, the first and second anode contacts forming two opposite sides of a first region of the anode, the first region being further delimited by a first free edge of the active common zone and by a second free edge of the active common zone opposite from the first free edge, a first cathode electrical contact, which is:
arranged above the active common zone, partially covering a region of the cathode above the first region,of a contact surface smaller than a surface area of the active common zone and than a surface area of the first region,offset from the first anode contact and from the second anode contact, at every point of the contact surface, and above the organic light-emitting system, away from the first main face, a reflector covering the active common zone, wherein, for each point B1 of the first anode contact, on defining a distance D1 between said point B1 and a 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 anode contact, passing through C1 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%, and wherein, for each point B2 of the second anode contact, on defining a distance D2 between said point B2 and a 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 anode contact, passing through C2 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%. |
