发明名称 |
Organic light emitting diode (OLED) pixel, display device including the same and driving method thereof |
摘要 |
An organic light emitting diode (OLED) display device includes a plurality of OLED pixels. In one aspect, each pixel respectively includes a first capacitor connected between a data line and a first node, a switching transistor connecting the first node and a second node, a second capacitor connected between the second node and a third node, a driving transistor having a gate electrode connected to the third node and controlling a driving current flowing from a first power source voltage to an OLED, and a reference voltage transistor transmitting a reference voltage to the first node. When a light emitting step occurs in which the OLED emits light, it is simultaneously performed in a plurality of pixels by use of a driving current, the switching transistor is turned off and the reference voltage transistor is turned on such that the reference voltage is transmitted to the first node, and a data voltage corresponding to a scan signal of a gate-on voltage respectively corresponding to a plurality of pixels is stored to the first capacitor. Aspects also include pixel circuits and methods of driving the pixels in the display. |
申请公布号 |
US9495913(B2) |
申请公布日期 |
2016.11.15 |
申请号 |
US201514619384 |
申请日期 |
2015.02.11 |
申请人 |
Samsung Display Co., Ltd. |
发明人 |
Han Sang-Myeon |
分类号 |
G09G3/32;G09G3/00 |
主分类号 |
G09G3/32 |
代理机构 |
Knobbe Martens Olson & Bear LLP |
代理人 |
Knobbe Martens Olson & Bear LLP |
主权项 |
1. An organic light emitting diode (OLED) display device, comprising:
a plurality of pixels, each pixel comprising a first capacitor connected between a data line and a first node, a first switching transistor directly connecting the first node and a second node, a second capacitor directly connected between the second node and a third node, a driving transistor having a gate terminal directly connected to the third node and configured to control a driving current flowing from a first power source voltage to an organic light emitting diode (OLED), and a reference voltage transistor configured to transmit a reference voltage to the first node, wherein, when a light emitting step in which the OLED emits light is simultaneously performed in a plurality of pixels by a driving current, the first switching transistor is turned off and the reference voltage transistor is turned on such that the reference voltage is transmitted to the first node, and a data voltage corresponding to at least a portion of the pixels is stored in the first capacitor, and wherein the first switching transistor is configured to be turned on by a compensation control signal of a gate-on voltage so as to connect the first node and the second node. |
地址 |
Yongin KR |