Organic light emitting diode display device and method of fabricating the same
View Patent ↗An organic light emitting diode display device having a frit which can improve mechanical strength and adhesion between the upper substrate and the lower substrate, and a method of fabricating the same are disclosed. The organic light emitting diode display device includes a lower substrate, an organic light emitting diode disposed on the lower substrate, an upper substrate to be coupled to the lower substrate, and a frit disposed between the lower substrate and the upper substrate to couple both the lower substrate and the upper substrate to each other where the frit has a plurality of pores.
1. An organic light emitting diode (OLED) display device, comprising:
a lower substrate;
an organic light emitting diode disposed on the lower substrate;
an upper substrate; and
a glass frit disposed between the lower substrate and the upper substrate sealing the lower substrate to the upper substrate,
wherein the glass frit includes a plurality of pores, wherein the upper substrate is sealed to the lower substrate by the glass frit.
2. The OLED display device according to claim 1 , wherein the frit has a porosity of between about 5% and about 95%.
3. The OLED display device according to claim 1 , wherein the frit has a porosity of between about 5% and about 70%.
4. The OLED display device according to claim 1 , wherein the frit comprises a filler and at least one material selected from the group consisting of MgO, CaO, BaO, Li 2 O, Na 2 O, K 2 O, B 2 O 3 , V 2 O 5 , ZnO, TeO 2 , Al 2 O 3 , SiO 2 , PbO, SnO, P 2 O 5 , Ru 2 O, Rh 2 O, Fe 2 O 3 , CuO, TiO 2 , WO 3 , Bi 2 O 3 , Sb 2 O 3 , lead-borate glass, tin-phosphate glass, vanadate glass, and borosilicate glass.
5. The OLED display device according to claim 4 , wherein the filler comprises at least one of a zirconium-tungsten-phosphate based filler, a zirconium-phosphate based filler, a zirconium based filler, an eucryptite based filler, a cordierite based filler, alumina, silica, zinc silicate, and aluminum titanate.
6. The OLED display device according to claim 4 , wherein the filler is between about 3 wt % and about 30 wt % of the frit.
7. The OLED display device according to claim 4 , wherein the frit further includes an absorber for absorbing laser or infrared radiation.
8. The OLED display device according to claim 1 , wherein the lower substrate is formed of glass.
9. The OLED display device according to claim 1 , wherein the upper substrate is formed of glass.
10. The OLED display device according to claim 1 , wherein the pores have a size of between 0.2 μm and about 10 μm.