TECHNICAL FIELD

The present disclosure relates to the field of display technology, and in particular, to a backplane for an organic light emitting display device, a method for fabricating the same, and an organic light emitting display apparatus.

BACKGROUND

With the development of science and technology and the optimization of integrated circuit technology, organic light emitting diode (OLED) display apparatuses have become leaders in the display field by virtue of their outstanding performance. OLED display technology has been widely used in mobile terminals, tablet computers, notebook computers, car audios, and televisions because of its advantages such as self-light emission, wide viewing angle, high contrast, low power consumption, and high reaction speed.

However, backplanes currently used for organic light emitting display devices, methods for fabricating the same, and organic light emitting display apparatuses still need to be improved.

SUMMARY

An aspect of the present disclosure provides an organic light emitting display device, including a substrate, an initializing voltage input line, a first electrode line, a thin film transistor, and an organic light emitting diode arranged on the substrate. The thin film transistor includes a first electrode, a second electrode and a control electrode, and the first electrode is coupled to the first electrode line, the initializing voltage input line is provided in the same layer and is made of the same material as one of the first electrode, the second electrode and the control electrode of the thin film transistor, and an extension direction of the initializing voltage input line is substantially the same as an extension direction of the first electrode line.

According to an embodiment of the present disclosure, the first electrode line is a data line of the organic light emitting display device, and the extension direction of the initializing voltage input line is substantially the same as an extension direction of the data line.

According to an embodiment of the present disclosure, the first electrode line is a power signal line of the organic light emitting display device, and the extension direction of the initializing voltage input line is substantially the same as an extension direction of the power signal line.

According to an embodiment of the present disclosure, the first electrode line is one of a data line and a power signal line of the organic light emitting display device, and the extension direction of the initializing voltage input line is substantially the same as extension directions of the data line and the power signal line.

According to an embodiment of the present disclosure, the organic light emitting display device further includes a scan line, and the extension direction of the initializing voltage input line is substantially perpendicular to an extension direction of the scan line.

According to an embodiment of the present disclosure, the organic light emitting display device further includes a reset signal line and a light emission control signal line, and extension directions of the reset signal line and the light emission control signal line are substantially the same as the extension direction of the scan line.

According to an embodiment of the present disclosure, the first electrode and the second electrode of the thin film transistor are a source and a drain respectively, and the initializing voltage input line is provided in the same layer and is made of the same material as the first electrode and the second electrode.

According to an embodiment of the present disclosure, the control electrode of the thin film transistor is a gate, and the initializing voltage input line is provided in the same layer and is made of the same material as the control electrode.

According to an embodiment of the present disclosure, the thin film transistor is a switching transistor in a pixel driving circuit of the organic light emitting display device, and the first electrode line is a data line of the organic light emitting display device.

According to an embodiment of the present disclosure, the initializing voltage input line and the data line are coupled to the same pixel driving circuit and are arranged adjacent to each other.

According to an embodiment of the present disclosure, the organic light emitting display device further includes a power signal line extending in substantially the same direction as the initializing voltage input line and the data line, and the data line, the initializing voltage input line and the power signal line are coupled to the same pixel driving circuit.

According to an embodiment of the present disclosure, the initializing voltage input line and the data line are arranged adjacent to each other, and the data line is arranged between the initializing voltage input line and the power signal line.

According to an embodiment of the present disclosure, the initializing voltage input line and the data line are arranged adjacent to each other, and the initializing voltage input line is arranged between the power signal line and the data line.

According to an embodiment of the present disclosure, the first electrode and the second electrode of the switching transistor, the initializing voltage input line and the data line are arranged in the same layer and made of the same material.

According to an embodiment of the present disclosure, the thin film transistor is a driving transistor in a pixel driving circuit of the organic light emitting display device, and the first electrode line is a power signal line of the organic light emitting display device.

According to an embodiment of the present disclosure, the initializing voltage input line and the power signal line are coupled to the same pixel driving circuit and are arranged adjacent to each other.

According to an embodiment of the present disclosure, the first electrode and the second electrode of the driving transistor, the initializing voltage input line and the power signal line are arranged in the same layer and made of the same material.

According to an embodiment of the present disclosure, the pixel driving circuit of the organic light emitting display device further includes a driving transistor and a first capacitor, and two plates of the first capacitor are respectively coupled to a control electrode of the driving transistor and the second electrode of the switching transistor.

According to an embodiment of the present disclosure, the pixel driving circuit of the organic light emitting display device further includes a second capacitor, and two plates of the second capacitor are respectively coupled to the control electrode and a first electrode of the driving transistor.

According to an embodiment of the present disclosure, the initializing voltage input line and the one of the first electrode, the second electrode and the control electrode of the thin film transistor are formed by a same patterning process.

