Flat panel display device
View Patent ↗A flat panel display device that includes a clad unit that may prevent terminals of a pad unit from becoming corroded or damaged by an etching solution during etching. The flat panel display device may include a display unit, a pad unit which may include a plurality of terminals electrically connecting the display unit to external devices, and a clad unit which may cover at least side end portions of the terminals, in which the clad unit may be composed of an insulating material.
1. A flat panel display device, comprising:
a substrate;
a display unit including a thin film transistor on the substrate, an insulating film covering the thin film transistor, and an OLED on the insulating film, the OLED being electrically connected to the thin film transistor;
a sealing structure on the substrate, the sealing structure sealing the display unit;
a terminal on the substrate, the terminal electrically connecting the thin film transistor and or the OLED to external electronic devices, the terminal being located outside the sealing structure; and
a clad unit completely covering at least side end portions of the terminal, wherein the clad unit includes an insulating material, the clad unit is formed at the same time as the insulating film, and the clad unit is thinner than the insulating film.
2. The flat panel display device as claimed in claim 1 , wherein the clad unit includes the same material as the insulating film.
3. The flat panel display device as claimed in claim 2 , wherein the insulating film includes an inorganic material.
4. The flat panel display device as claimed in claim 3 , wherein the inorganic material includes at least one of SiO 2 , SiN x , SiON, Al 2 O 3 , TiO 2 , Ta 2 O 5 , HfO 2 , ZrO 2 , BST, and PZT.
5. The flat panel display device as claimed in claim 2 , wherein the terminal is coupled to the external electronic device by an anisotropic conductive adhesive.
6. The flat panel display device as claimed in claim 2 , wherein the insulating film includes an organic material.
7. The flat panel display device as claimed in claim 6 , wherein the organic material includes polymer derivatives having a phenol group, an acryl group, an imide group, an arylether group, an amide group, an fluorine group, a p-xylene group, or a vinyl alcohol group, or a mixture thereof.
8. The flat panel display device as claimed in claim 1 , wherein the terminal includes a first terminal and a second terminal disposed on the first terminal, the first terminal including at least one of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, ITO, IZO, ZnO, and In 2 O 3 , and the second terminal including a first conductive layer, a second conductive layer, and a third conductive layer.
9. The flat panel display device as claimed in claim 8 , wherein the thin film transistor includes a gate electrode, a source electrode, and a drain electrode, the gate electrode including the same material as the first terminal, and the source and drain electrodes including the same first conductive layer, second conductive layer, and third conductive layer as the second terminal.