Tpo Displays Corporation

Chimei Innolux Corporation

Ching-Hone Lee

An exemplary embodiment of such a system includes: a level shifter operative to transform an input signal into an output signal, the level shifter includes: a voltage distributor operative to receive the input signal and distribute potential levels at a first node and a second node to respectively output a first signal and a second signal, and the voltage distributor includes: a current limiter, operative to provide a limited current passing through the first node; a switch, operative to selectively establish an electrical connection between the first node and the second node; and a first transistor having a first electrode, a second electrode, and a first control electrode, wherein the first electrode is connected to the second node, the second electrode is utilized to receive the input signal, and the first control electrode is coupled to the first node; and an output circuit, operative to generate the output signal.

Systems including level shifter having voltage distributor

Systems for displaying images are provided. An embodiment of such a system has a dynamic shift register. The dynamic shift register includes a sampling unit, a holding unit, and a first logic circuit. The sampling unit, which is coupled to an incoming signal and a first input terminal of the dynamic shift register, samples the incoming signal according to a first input signal received by the first input terminal to generate a sampled value. The holding unit, which is coupled to the sampling unit, is utilized to hold the sampled value. The first logic circuit, which is coupled to the holding unit and an output terminal of the dynamic shift register, generates an output signal according to the sampled value and a second input signal inputted into the first logic circuit.

Systems for displaying images by utilizing vertical shift register circuit to generate non-overlapped output signals

A level shifter includes a voltage distributor for receiving an input signal and respectively outputting a first signal and a second signal at a first node and a second node according to the input signal; and an output circuit coupled to the voltage distributor for generating an output signal according to the first signal and the second signal, wherein the voltage distributor includes: a first transistor having a first electrode, a second electrode coupled to the first node, and a first control electrode for receiving the input signal; a switch coupled between the first node and the second node for selectively establishing an electrical connection between the first and the second nodes; and a second transistor having a third electrode coupled to the second node, a fourth electrode, and a second control electrode coupled to the first node.

Systems for driving displays are provided. In this regard, an representative system for driving a display comprises a signal driving circuit having a first shift register and a second shift register coupled in series to the first shift register. The signal driving circuit is operative to drive a display according to inputs provided by only two clock signals.

Systems involving signal driving circuits for driving displays

Systems for displaying images are provided. An embodiment of such a system has a dynamic shift register. The dynamic shift register includes a first, second, third, fourth and fifth switching circuits and a level adjusting circuit. The first switching circuit controls if the first supply voltage is transmitted to a first node. When the first switching circuit is switched off, the level adjusting circuit drives a voltage level of the first node toward the second supply voltage. The second switching circuit controls if the first supply voltage is transmitted to a second node. The third switching circuit controls if the first input signal is transmitted to the second node. The fourth switching circuit controls if the first supply voltage is transmitted to the output terminal. The fifth switching circuit controls if the second input signal is transmitted to the output terminal.

Systems for displaying images by utilizing horizontal shift register circuit for generating overlapped output signals

Systems for displaying images are provided. A representative system comprises a signal driving circuit comprising a plurality of shift registers connected in series and controlled only by a first clock and a second clock, generating corresponding driving pulses in turn in response to a start pulse. Each shift register comprises a pulse generation unit with a first clock input terminal receiving one of the first and the second clocks and a first power terminal coupled to a first power voltage, and a leakage protection unit coupled to the pulse generation unit, electrically separating the first power voltage from the received clock at the first clock input terminal.

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Hsin-Chu, Taiwan

Ching-Hone Lee