Voltage level shifter and display device
AssigneeSharp Kabushiki Kaisha
InventorsMichael James Brownlow, Graham Andrew Cairns, Yasushi Kubota, Hajime Washio
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AssigneeSharp Kabushiki Kaisha
InventorsMichael James Brownlow, Graham Andrew Cairns, Yasushi Kubota, Hajime Washio
Estimating the term…
A voltage level shifter comprises an input stage in the form of cross-coupled source followers and an output stage in the form of an amplifier AMP, which may have single-ended or differential inputs. The source followers comprise the transistors M1 and M2 and the transistors M3 and M4. Differential inputs IN and !IN are connected to the gates of the transistors M2 and M4. A bias voltage is supplied to the gate of the transistor M1 from a node B to which the drain of the transistor M3 and the source of the transistor M4 are connected. Similarly, a bias voltage is supplied to the gate of the transistor M3 from a node A to which the drain of the transistor M1 and the source of the transistor M2 are connected.
A voltage level shifter comprising first to fourth transistors of a first conduction type, each of the first to fourth transistors being a thin film transistor, the first and second transistors being connected in series between first and second power supply inputs with the control electrode of the second transistor being connected to a first input for receiving a direct input signal, the third and fourth transistors being connected in series between the first and second power supply inputs with the control electrode of the fourth transistor being connected to a second input for receiving a complementary input signal, the control electrode of the first transistor being connected to the output electrode of the third transistor and the common electrode of the fourth transistor, and the control electrode of the third transistor being connected to the output electrode of the first transistor and the common electrode of the second transistor,
A level shifting circuit comprising:
Dependencies are inferred from the claim text.