Oled structure and method of making thereof
AssigneesInterface Technology (ChengDu) Co., Ltd., Interface Optoelectronics (Shenzhen) Co., Ltd., General Interface Solution Limited
InventorChin-Feng CHUNG
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Abstract
An OLED structure comprises a node electrode, a hole injection layer, a first hole transporting layer, and a blue emitting layer. The OLED structure further comprises a second hole transporting layer, a green emitting layer disposed on the second hole transporting layer; and a red emitting layer disposed on a portion of the green emitting layer. The OLED structure also comprises an electron transport layer and a cathode. A method of manufacturing the OLED structure is also provided.
Claims8
An organic light emitting diode stack structure comprising:
- a first common layer substrate comprising an anode and a hole injection layer;
- a first hole transport layer above the hole injection layer;
- a blue light emitting layer located above the first hole transport layer;
- a second hole transport layer stacked on a portion of the blue light emitting layer;
- a green light emitting layer stacked on the second hole transport layer;
- a red light emitting layer stacked on top of the green light emitting layer;
- a second common layer substrate disposed on the red light emitting layer, the second common layer substrate comprising an electron transport layer and a cathode formed on the electron transport layer;
- a first charge generating structure disposed between the blue light emitting layer and the green light emitting layer, the first charge generating structure comprising:
- a first N-type doped layer disposed over the blue light emitting layer;
- a first P-type doped layer disposed below the first green light emitting layer;
- and
- a charge generation layer disposed between the first doped N-type layer and the first P-type doped layer.
A method for preparing an organic light emitting diode stack structure comprising:
- using photolithography to define a process area pattern on a first common layer;
- performing vaporization on the first common layer using a common mask, the first common layer comprising a hole injection layer, a first hole transport layer, and a blue light emitting layer;
- bonding a metal to a first mask to form a first metal mask;
- utilizing the first metal mask to form a first N-type doped layer, a first charge generation layer, a first P-type doped layer, a second hole transport layer, and a green light emitting layer stack structure;
- removing the first metal mask;
- utilizing a second metal mask to form a red luminescent layer;
- removing the second metal mask;
- and
- evaporating an electron transport layer and a cathode material.
Dependencies are inferred from the claim text.