Display apparatus and electronic instrument
View Patent ↗A display apparatus includes: a plurality of pixel circuits; and a signal supply circuit which supplies any one of a potential of a video signal, an extinction potential for extinguishing light-emitting devices, and a high-level potential higher than the extinction potential, wherein each of the plurality of pixel circuits includes a storage capacitor which retains a voltage corresponding to the video signal, a drive transistor which supplies a current based on the voltage retained in the storage capacitor to the corresponding light-emitting device, a light-emitting device which emits light in accordance with the current supplied from the drive transistor, and a write transistor which writes the voltage corresponding to the video signal to the storage capacitor after the potentials supplied by the signal supply circuit in order of the high-level potential and the extinction potential are given to the gate terminal of the drive transistor.
1. A display apparatus comprising:
a plurality of pixel circuits; and
a signal supply circuit which supplies any one of a potential of a video signal, an extinction potential for extinguishing light-emitting devices, a reference potential lower than the extinction potential, and a high-level potential higher than the extinction potential,
wherein,
the pixel circuits are driven in an extinction period, a threshold correction period and a light-emission period; and
each of the plurality of pixel circuits includes
a storage capacitor which retains a voltage corresponding to the video signal,
a drive transistor which supplies a current based on the voltage retained in the storage capacitor to the corresponding light-emitting device,
a light-emitting device which emits light in accordance with the current supplied from the drive transistor, and
a write transistor connected to receive each of the potential of a video signal, the extinction potential for extinguishing light-emitting devices, the reference potential, and the high-level potential higher than the extinction potential, and which writes the voltage corresponding to the video signal to the storage capacitor after supplying the high-level potential and the extinction potential during the extinction period and the reference potential during the threshold correction period, in that order, to a gate of the drive transistor.
2. The display apparatus according to claim 1 , further comprising:
a power supply circuit which supplies the same power supply potentials to the plurality of pixel circuits for every plural number of rows,
wherein the drive transistor supplies to the light-emitting device the current based on the voltage retained in the storage capacitor by receiving the power supply potential.
3. The display apparatus according to claim 1 , wherein the signal supply circuit supplies the high-level potential within the range of the potential of the video signal.
4. The display apparatus according to claim 3 , wherein the signal supply circuit supplies the high-level potential within the range lower than half of the range of the potential of the video signal.
5. The display apparatus according to claim 1 , wherein the light-emitting devices are organic electroluminescence devices.
6. An electronic instrument comprising:
a plurality of pixel circuits; and
a signal supply circuit which supplies any one of a potential of a video signal, an extinction potential for extinguishing a light-emitting device, a reference potential lower than the extinction potential and a high-level potential higher than the extinction potential,
wherein,
the pixel circuits are driven in an extinction period, a threshold correction period and a light-emission period; and
each of the plurality of pixel circuits includes
a storage capacitor which retains a voltage corresponding to the video signal,
a drive transistor which supplies a current based on the voltage retained in the storage capacitor to the corresponding light-emitting device,
a light-emitting device which emits light in accordance with the current supplied from the drive transistor, and
a write transistor connected to receive each of the potential of a video signal, the extinction potential for extinguishing light-emitting devices, the reference potential, and the high-level potential higher than the extinction potential, and which writes the voltage corresponding to the video signal to the storage capacitor during a current horizontal scan period after supplying the high-level potential and the extinction potential during the extinction period and the reference potential during the threshold correction period, in that order to a gate of the drive transistor.