Displayer and driving method thereof

Abstract

The invention provides a displayer and a driving method of the displayer. The displayer is provided with a pixel circuit. The pixel circuit comprises an organic light-emitting diode, a transistor, a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a switch unit. The invention further provides a driving method used for driving the pixel circuit. As a result, the first switch, the second switch, the third switch and the switch unit are controlled, so that a driving current generated by the transistor is unrelated to the critical voltage of the transistor substantially.

Description

technical field [0001] The invention relates to a display technology, in particular to an organic light emitting diode (OLED) display and a driving method thereof. Background technique [0002] Due to the advantages of self-illumination, high brightness, fast response time, and wide viewing angle, OLED display devices have gradually attracted attention and been used. [0003] An OLED display device achieves the function of displaying images through a plurality of pixel circuits arranged in an array and capable of displaying different colors, and sequentially scans the pixel circuits row by row or column by row to determine the light intensity of each pixel circuit. Each pixel circuit includes an OLED, and generates a driving current to drive the OLED, so that the OLED emits light whose intensity is related to the magnitude of the driving current. [0004] refer to figure 1 and figure 2 , an existing pixel circuit includes an OLED11, a first transistor 12, a second transi...

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Problems solved by technology

[0015] In fact, it is not possible to achieve C due to space constraints at design time 2 >>C P , resulting in fT The variation of the drive current I DRIVE effect, but the drive current I DRIVE still with the critical voltage V T related, will still be affected by the threshold voltage V T Variation effect of

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