Patent ID: 7755279

Claim:
An organic electroluminescent device, comprising: a first substrate; a second substrate facing and spaced apart from the first substrate, the first and second substrates each having pixel regions, wherein the device is a top emission organic electroluminescent device that emits light through the second substrate; an array element on an inner surface of the first substrate, the array element including a plurality of thin film transistors and a plurality of contact patterns wherein the respective contact patterns is formed by extending a drain electrode of the respective thin film transistors; organic electroluminescent diodes on an inner surface of the second substrate, wherein each organic electroluminescent diode includes a first electrode, a second electrode, and a organic electroluminescent layer between the first and second electrodes; connection patterns electrically interconnecting the first and second substrates, wherein the connection patterns and the thin film transistors are alternately arranged and further wherein the respective connection patterns directly contacts with the respective contact patterns and the respective organic electroluminescent diodes; and a seal pattern at a peripheral portion bonding the first and second substrates to each other, wherein the connection patterns is formed on the array element of the first substrate and is connected with the organic electroluminescent diodes of the second substrate, wherein the pixel regions each includes a red sub-pixel region, a green sub-pixel region, and a blue sub-pixel region, wherein the organic electroluminescent layer includes an electron injection layer, an electron transport layer, red/green/blue emission layers, a hole transport layer, and a hole injection layer, wherein the first electrode is commonly formed in the sub-pixel regions while the second electrode is divided into the sub-pixel regions, and wherein the electron injection layer and the electron transport layer are commonly formed in the sub-pixel regions and the hole transport layer and the hole injection layer are commonly formed in the sub-pixel regions, while the red, green, and blue emission layers are formed in the red, green and blue sub-pixel regions respectively, wherein the electron injection layer, the electron transport layer, the hole transport layer and the hole injection layer are commonly formed in the red, green and blue sub-pixel regions without dividing the red, green and blue sub-pixel regions.