Shift register circuit and display device using the same

摘要

The display device according to the present invention comprises a substrate and at least one optical coupler having an optical receiver and an optical transmitter formed on the substrate, wherein the optical transmitter transmits an optical signal to the optical receiver.

主权项

1. A display device, comprising:
a substrate; and a shift register circuit, comprising a plurality of shift registers optically coupled in series, each shift register comprising: an optical receiver, for receiving an optical signal from the previous shift register; an optical transmitter for transmitting the optical signal to the next shift register; a first switch, wherein a first terminal of the first switch is connected to the optical receiver, a second terminal of the first switch is coupled to a clock signal, and a third terminal of the first switch is connected to an output terminal; a second switch, wherein a first terminal of the second switch is connected to the optical receiver, a second terminal of the second switch is coupled to the clock signal, and a third terminal of the second switch is connected to the optical transmitter; and a bootstrapping capacitor, wherein a first terminal of the bootstrapping capacitor is connected to the optical receiver, the first terminal of the first switch and the first terminal of the second switch, and a second terminal of the bootstrapping capacitor is connected to the output terminal, wherein the optical transmitter comprises an organic light emitting diode (OLED), the optical receiver comprises an optical thin film transistor (TFT), and the conductance of the optical thin film transistor is controlled by the optical signal; and wherein the optical coupler further comprises an optical reflector for reflecting the optical signal from the optical transmitter to the optical receiver.