摘要:
A flip-flop includes: a first, second, third, and fourth transistors; input terminals; and first and second output terminals, the first and second transistors constituting a first CMOS circuit such that gate terminals are connected and drain terminals are connected, the third and fourth transistors constituting a second CMOS circuit such that gate terminals are connected and drain terminals are connected, the first output terminal connected to a gate side of the first CMOS circuit and a drain side of the second CMOS circuit, the second output terminal connected to a gate side of the second CMOS circuit and a drain side of the first CMOS circuit, at least one input transistor included in the group of the first through fourth transistors, a source terminal of the input transistor being connected to one of the input terminals. This can provide a further compact flip-flop.
摘要:
A flip-flop includes: a first, second, third, and fourth transistors; input terminals; and first and second output terminals, the first and second transistors constituting a first CMOS circuit such that gate terminals are connected and drain terminals are connected, the third and fourth transistors constituting a second CMOS circuit such that gate terminals are connected and drain terminals are connected, the first output terminal connected to a gate side of the first CMOS circuit and a drain side of the second CMOS circuit, the second output terminal connected to a gate side of the second CMOS circuit and a drain side of the first CMOS circuit, at least one input transistor included in the group of the first through fourth transistors, a source terminal of the input transistor being connected to one of the input terminals. This can provide a further compact flip-flop.
摘要:
A stage of the shift register has (i) a set-reset type flip-flop which receives an initialization signal and (ii) a signal generating circuit which receives a simultaneous selection signal and which generates an output signal by use of an output of the flip-flop. In at least one example embodiment, the output of the flip-flop becomes inactive regardless of whether a setting signal and a resetting signal are active or inactive, as long as the initialization signal is active. The initialization signal becomes active before the end of the simultaneous selection, and then becomes inactive after the end of the simultaneous selection. This makes it possible to stabilize operation of the shift register after the end of simultaneous selection of a plurality of signal lines carried out by the display driving circuit at a predetermined timing.
摘要:
Provided is a shift register of a display-driving circuit which carries out simultaneous selection of a plurality of signal lines by using a simultaneous selection signal. A stage of the shift register includes (i) a set-reset type flip-flop and (ii) a signal generating circuit which generates an output signal of the stage by selectively outputting a signal in response to an output of the flip-flop. The output signal of the stage (i) becomes active due to an activation of the simultaneous selection signal and then (ii) remains active while the simultaneous selection is being performed, and the output from the flip-flop is inactive during a period in which a setting signal and a resetting signal are both being active. This makes it possible to quickly carry out the simultaneous selection of all the signal lines and the initialization of the shift register.
摘要:
A stage of the shift register has (i) a set-reset type flip-flop which receives an initialization signal and (ii) a signal generating circuit which receives a simultaneous selection signal and which generates an output signal by use of an output of the flip-flop. In at least one example embodiment, the output of the flip-flop becomes inactive regardless of whether a setting signal and a resetting signal are active or inactive, as long as the initialization signal is active. The initialization signal becomes active before the end of the simultaneous selection, and then becomes inactive after the end of the simultaneous selection. This makes it possible to stabilize operation of the shift register after the end of simultaneous selection of a plurality of signal lines carried out by the display driving circuit at a predetermined timing.
摘要:
Disclosed is a shift register for use in a display driving circuit that simultaneously selects signal lines, including, in a stage thereof: a flip-flop including an initialization terminal; and a signal generating circuit that receives a simultaneous selection signal and that generates an output signal of the stage by use of an output of the flip-flop, wherein: the output signal of the stage becomes active due to an activation of the simultaneous selection signal so as to be active during a period of the simultaneous selection; the output of the flip-flop is non-active while the initialization terminal, a set terminal, and a reset terminal of the flip-flop; and the initialization terminal of the flip-flop receives the simultaneous selection signal. This shift register makes it possible to downsize various drivers.
摘要:
A display driving circuit that carries out CC driving is configured such that retaining circuits are provided in such a way as to correspond one-by-one to their respective stages of a shift register, that a polarity signal CMI is inputted to each of the latch circuits, that when an internal signal Mn generated by a shift register at the nth stage becomes active, a latch circuit corresponding to the nth stage loads and retains the polarity signal CMI, that an output signal SRBOn from the shift register at the nth stage is supplied as a scanning signal to a gate line connected to pixels corresponding to the (n+1)th stage, and that an output from latch circuit corresponding to the nth stage is supplied as CSOUTn to a CS bus line forming capacitors with pixel electrodes of pixels corresponding to the nth stage.
摘要:
In a storage capacitor line drive circuit driving a storage capacitor line of an active-matrix display device and driven by outputs of a scanning signal line drive circuit, at least one (VSS) of a high-potential supply voltage (VDD) and a low-potential supply voltage (VSS) differs from a supply voltage (GVSS) of a corresponding logical level of the scanning signal line drive circuit, the high-potential supply voltage and the low-potential supply voltage being used for generating a signal voltage of a preceding stage to an output stage. This makes it possible to achieve a storage capacitor line drive circuit capable of avoiding malfunctioning even in a case where the storage capacitor line drive circuit receives noise from a scanning signal line, and a display device including the storage capacitor line drive circuit.
摘要:
A signal generator circuit of the present invention is a signal generator circuit for use in a display device, the display device including (a) a pixel having a pixel electrode, (b) an electric conductor with which the pixel electrode forms a capacitor, (c) a data signal line driving circuit which outputs a data signal whose polarity is reversed for each n horizontal scanning period(s), where n is a natural number, and (d) a scanning signal line driving circuit which outputs scanning signals corresponding to respective stages, said signal generator circuit generating a drive signal supplied to the electric conductor, wherein: said signal generator circuit comprises flip flops corresponding to the respective stages, each flip flop including a gate circuit and a latch circuit; and in regard to one flip flop corresponding to one of the stages, (i) the gate circuit is supplied with a signal synchronized with a scanning signal corresponding to a preceding stage of the one of the stages, and a signal synchronized with a scanning signal corresponding to a subsequent stage of the one of the stages, (ii) the latch circuit is supplied with a polarity signal whose polarity is reversed for each n horizontal scanning period(s) via the gate circuit, and (iii) the drive signal of the one of the stages is generated in accordance with an output of the one flip flop. With the arrangement, it is possible to provide, with use of a simple configuration, a driver circuit for use in a liquid crystal display device which carries out CC (charge coupling) driving or COM driving.
摘要:
A display driving circuit that carries out CC driving is configured such that retaining circuits are provided in such a way as to correspond one-by-one to their respective stages of a shift register, that a polarity signal CMI is inputted to each of the latch circuits, that when an internal signal Mn generated by a shift register at the nth stage becomes active, a latch circuit corresponding to the nth stage loads and retains the polarity signal CMI, that an output signal SRBOn from the shift register at the nth stage is supplied as a scanning signal to a gate line connected to pixels corresponding to the (n+1)th stage, and that an output from latch circuit corresponding to the nth stage is supplied as CSOUTn to a CS bus line forming capacitors with pixel electrodes of pixels corresponding to the nth stage.