IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0096968
(2016-04-12)
|
등록번호 |
US-9842543
(2017-12-12)
|
우선권정보 |
CN-2015 1 0196722 (2015-04-23) |
발명자
/ 주소 |
|
출원인 / 주소 |
- EverDisplay Optronics (Shanghai) Limited
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
1 |
초록
▼
An organic light-emitting diode (OLED) pixel compensation circuit includes a driving module, a compensation module, an OLED lighting module, and a precharging module. The compensation module is connected to the driving module and is configured to receive a voltage of an external first power for comp
An organic light-emitting diode (OLED) pixel compensation circuit includes a driving module, a compensation module, an OLED lighting module, and a precharging module. The compensation module is connected to the driving module and is configured to receive a voltage of an external first power for compensating a turn-on voltage of the driving module. The precharging module is connected to the OLED lighting module and is configured to receive a voltage of an external second power for precharging the OLED lighting module. The driving module is connected to the OLED lighting module and is configured to remain on under compensation by the compensation module for receiving the voltage of the external first power to obtain a driving voltage for driving the OLED lighting module to emit light, thereby driving the OLED lighting module to emit light.
대표청구항
▼
1. An organic light-emitting diode pixel compensation circuit comprising a driving module, a compensation module, an organic light-emitting diode (OLED) module, an initialization module, a data selection module, and a precharging module, wherein the improvements comprise: the compensation module is
1. An organic light-emitting diode pixel compensation circuit comprising a driving module, a compensation module, an organic light-emitting diode (OLED) module, an initialization module, a data selection module, and a precharging module, wherein the improvements comprise: the compensation module is connected to the driving module and is configured to receive a voltage supplied from an external first power to compensate a turn-on voltage of the driving module,the precharging module is connected to the OLED module and is configured to receive a voltage supplied from an external second power to precharge the OLED module, andthe driving module is connected to the OLED module and is configured to remain ON state by compensation effection of the compensation module, such that the voltage supplied from the external first power is able to be received by the driving module and transferred to drive the OLED module,each of the driving module, the compensation module, and the precharging module includes a first terminal, a second terminal, and a control terminal,the first terminal of the driving module is connected to the first power, the second terminal of the driving module is connected to an anode of the OLED module, the control terminal of the driving module is connected to the second terminal of the compensation module,the first terminal of the compensation module is connected to the first power, the control terminal of the compensation module is connected to and controlled by an external first scan signal line,the first terminal of the precharging module is connected to the second power Vin, the second terminal of the precharging module is connected to the anode of the OLED module, the control terminal of the precharging module is connected to and controlled by an external second scan line, andthe OLED module includes a cathode configured to receive a voltage supplied from a third power,the initialization module comprises a first terminal connected to the control terminal of the driving module, a second terminal connected to the second power source and configured to receive the voltage of the second power and to clear the voltage currently stored by the control terminal of the driving module, and a control terminal connected to and controlled by the second scan line,the data selection module comprises a first terminal connected to the second terminal of the driving module, a second terminal connected to an external data signal line and configured to receive a data signal of the data signal line and to input the data signal to the control terminal of the driving module, and a control terminal connected to and controlled by the first scan line. 2. The organic light-emitting diode pixel compensation circuit of claim 1, wherein the external second scan line is an N−1th scan signal line, and the external first scan line is an Nth scan signal line. 3. The organic light-emitting diode pixel compensation circuit of claim 1, further comprising a voltage storage module, wherein the voltage storage module comprises a first terminal and a second terminal, the first terminal of the voltage storage module is connected to the first power, and the second terminal of the voltage storage module is connected to the control terminal of the driving module and configured to store the voltage received by the control terminal of the driving module. 4. The organic light-emitting diode pixel compensation circuit of claim 3, further comprising a first switch module, wherein the first switch module including a first terminal connected to the first power, a second terminal connected to the first terminal of the driving module and the first terminal of the compensation module and configured to control ON and OFF states states of circuits individually between the first power and the driving module and between the first power and the compensation module, and a control terminal connected to and controlled by an external control signal lineON and OFF statesON and OFF states. 5. The organic light-emitting diode pixel compensation circuit of claim 4, further comprising a second switch module, wherein the second switch module comprises a first terminal connected to the second terminal of the driving module, a second terminal connected to the anode of the OLED module and configured to control ON and OFF states states of a circuit between the driving module and the OLED module, and a control terminal connected to and controlled by the control signal lineON and OFF states. 6. The organic light-emitting diode pixel compensation circuit of claim 5, wherein the driving module comprises a driving transistor, the driving transistor includes a first electrode serving as the first terminal of the driving module, with the driving transistor further including a second electrode serving as the second terminal of the driving module, and with the driving transistor further including a gate serving as the control terminal of the driving module. 7. The organic light-emitting diode pixel compensation circuit of claim 6, with the compensation module including a second transistor, with the second transistor including a first electrode serving as the first terminal of the compensation module, with the second transistor further including a second electrode serving as the second terminal of the compensation module, and with the second transistor further including a gate serving as the control terminal of the compensation module. 8. The organic light-emitting diode pixel compensation circuit of claim 7, with the precharging module including a third transistor, with the third transistor including a first electrode serving as the first terminal of the precharging module, with the third transistor further including a second electrode serving as the second terminal of the precharging module, and with the third transistor further including a gate serving as the control terminal of the precharging module. 9. The organic light-emitting diode pixel compensation circuit of claim 8, with the first switch module including a sixth transistor, with the sixth transistor including a first electrode serving as the first terminal of the first switch module, with the sixth transistor further including a second electrode serving as the second terminal of the first switch module, and with the sixth transistor further including a gate serving as the control terminal of the first switch module. 10. The organic light-emitting diode pixel compensation circuit of claim 9, with the second switch module including a seventh transistor, with the seventh transistor including a first electrode serving as the first terminal of the second switch module, with the seventh transistor further including a second electrode serving as the second terminal of the second switch module, and with the seventh transistor further including a gate serving as the control terminal of the second switch module. 11. The organic light-emitting diode pixel compensation circuit of claim 10, with the data selection module including an eighth transistor, with the eighth transistor including a first electrode serving as the first terminal of the data selection module, with the eighth transistor further including a second electrode serving as the second terminal of the data selection module, and with the eighth transistor further including a gate serving as the control terminal of the data selection module. 12. The organic light-emitting diode pixel compensation circuit of claim 11, with the voltage storage module being a storage capacitor, with the storage capacitor including a first terminal connected to the first power and a second terminal connected to the gate of the driving transistor. 13. The organic light-emitting diode pixel compensation circuit of claim 12, with the initialization module including a dual gate structure having a fourth transistor and a fifth transistor, with the fourth transistor including a first electrode serving as the first terminal of the initialization module, with the fourth transistor further including a second electrode connected to a first electrode of the fifth transistor, with a gate of the fourth transistor and a gate of the fifth transistor connected to a same node serving as the control terminal of the initialization module, and with the fifth transistor further including a second electrode serving as the second terminal of the initialization module. 14. The organic light-emitting diode pixel compensation circuit of claim 13, wherein each of the driving transistor, the second transistor, the third transistor, the fourth transistor, the fifth transistor, the sixth transistor, the seventh transistor, and the eighth transistor is a p-channel thin film transistor. 15. The organic light-emitting diode pixel compensation circuit of claim 12, with the initialization module including a ninth transistor, with the ninth transistor including a first electrode serving as the first terminal of the initialization module, with the ninth transistor further including a second electrode serving as the second terminal of the initialization module, and with the ninth transistor further including a gate serving as the control terminal of the initialization module. 16. The organic light-emitting diode pixel compensation circuit of claim 15, wherein each of the driving transistor, the second transistor, the third transistor, the sixth transistor, the seventh transistor, the eighth transistor, and the ninth transistor is a p-channel thin film transistor. 17. The organic light-emitting diode pixel compensation circuit of claim 13, wherein each of the first power, the second power, and the data signal line is a direct current power supplier, and the data signal provided from the data signal line is larger than the voltage provided from the second power, and the voltage provided from the first power is larger than a voltage difference between the data signal of the data signal line and a threshold voltage of the driving transistor.
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