Organic light emitting diode display and manufacturing method thereof
View Patent ↗A large size organic light emitting diode (OLED) display and manufacturing method thereof are disclosed. In one embodiment, the method includes i) forming a display unit including a plurality of pixels on a substrate, ii) forming a getter layer, a bonding layer and a conductive contact layer around the display unit and iii) manufacturing a sealing member including a flexible polymer film and a metal layer formed on at least one side of the polymer film. The method may further include laminating the sealing member on the substrate using a roll lamination process such that the metal layer contacts the conductive contact layer and curing the contact layer and the conductive contact layer.
1. An organic light emitting diode (OLED) display comprising:
a substrate;
a display unit formed over the substrate and comprising a plurality of pixels;
a conductive contact layer formed separated from and so as to surround the display unit;
a sealing member facing the display unit and connected to the conductive contact layer,
wherein the sealing member comprises:
a flexible polymer film; and
a metal layer formed over at least one side of the polymer film, contacting the conductive contact layer and electrically connected to the display unit via the conductive contact layer.
2. The OLED display of claim 1 , wherein the polymer film has a thickness in the range of about 1 μm to about 300 μm.
3. The OLED display of claim 1 , wherein the display unit has a diagonal length greater than about 700 mm.
4. The OLED display of claim 1 , wherein the conductive contact layer surrounds the display unit, and wherein a bonding layer, a getter layer and a moisture-absorbing filler are disposed inside the conductive contact layer.
5. The OLED display of claim 1 , wherein the display unit comprises a common electrode and a common power line, and wherein and a first pad part electrically connected to the common electrode and a second pad part electrically connected to the common power line are formed between the conductive contact layer and the substrate.
6. The OLED display of claim 5 , wherein the conductive contact layer is conductive in the thickness direction of the substrate and is non-conductive in other directions.
7. The OLED display of claim 5 , wherein the sealing member comprises i) a first metal layer disposed over the inner side of the polymer film and electrically connected to the first pad part via the conductive contact layer and ii) a second metal layer disposed over the inner side of the polymer film and at a location where the first metal layer is not formed and electrically connected to the second pad part via the conductive contact layer.