Organic light emitting diode display having shield electrodes
First Claim
1. An organic light emitting diode(OLED) display, comprising:
- a substrate; and
a plurality of pixels formed on the substrate, each pixel of said plurality of pixels comprising;
an OLED;
a drive circuit for driving the OLED, the OLED being vertically stacked over the drive circuit, the drive circuit being vertically stacked over the substrate, the drive circuit including at least one thin-film transistor; and
at least one shield electrode for reducing parasitic capacitances causing leakage currents, said shield electrode being disposed between the OLED and the drive circuit, the at least one shield electrode made from an electric conductor and arranged to cover an entire region between a source and a drain of the at least one thin-film transistor.
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Accused Products
Abstract
An organic light emitting diode (OLED) display includes at least one shield electrode between a cathode layer and an OLED drive circuit. The OLED drive circuit has at least one thin-film transistor (TFT), and the shield electrode is disposed to correspond to the thin-film transistor and closer to the cathode layer, covering an entire region between the source and drain of the thin-film transistor. The shield electrode is either grounded or tied to the gate of the thin-film transistor, to thereby minimize parasitic capacitances in the pixels of the display to enhance the display performance. The presented architecture enables high density drive circuit integration in amorphous silicon or other technologies, yet preserving a high display aperture ratio.
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Citations
12 Claims
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1. An organic light emitting diode(OLED) display, comprising:
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a substrate; and a plurality of pixels formed on the substrate, each pixel of said plurality of pixels comprising; an OLED; a drive circuit for driving the OLED, the OLED being vertically stacked over the drive circuit, the drive circuit being vertically stacked over the substrate, the drive circuit including at least one thin-film transistor; and at least one shield electrode for reducing parasitic capacitances causing leakage currents, said shield electrode being disposed between the OLED and the drive circuit, the at least one shield electrode made from an electric conductor and arranged to cover an entire region between a source and a drain of the at least one thin-film transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification