An organic light emitting display panel and its driving method

Abstract

The invention provides an organic light emitting display panel and a driving method thereof. The organic light emitting display panel comprises at least one first circuit and a plurality of second circuits; a plurality of reference voltage lines and a plurality of data lines are also provided; the first circuit comprises a signal generation unit, a signal input control unit and a signal detection unit; the second circuit comprises a first transistor; the first circuit performs initialization and threshold value detection on the first transistor through the reference voltage lines, and the first circuit performs threshold value compensation on the first transistor through the data lines. According to the invention, the organic light emitting display panel and the driving method thereof provided by the invention can solve problems of uneven display caused by threshold voltage shifting and organic light emitting diode secretly emitting in threshold value process and the like, in addition, the organic light emitting display panel and the driving method thereof can be used for VR displaying, can reduce afterlight and can improve VR dizziness problem.

Description

technical field [0001] The invention relates to the display field, in particular to an organic light emitting display panel and a driving method thereof. Background technique [0002] In recent years, various light-weight and small-sized flat panel display devices have been developed instead of cathode ray tubes. Examples of these flat panel display devices include liquid crystal display panels, plasma display panels, and electroluminescent display panels. Among them, the electroluminescent display panel realizes the normal display of the display panel through the electroluminescent device in the display panel. According to the different materials of the light-emitting layer, the electroluminescent device is divided into two types: inorganic light-emitting and organic light-emitting. Response speed, high luminous efficiency, strong brightness, and wide viewing angle are called the new generation display technology in the industry. [0003] As a current-controlled light-emi...

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Problems solved by technology

[0011] but, Figure 1A In the process of performing threshold value compensation by the external compensation circuit shown in the figure, at time t1 and t2, the second transistor T2 is turned on, and there will be a problem that the organic light-emitting diode D steals light; at the same time, the data voltage V data At this time, the potentials are respectively written to the first node Q1 and the second node Q2. Since the second transistor T2 is turned on due to the potential of the first node Q1 at this time, the electrical signal input by the first constant voltage source VDD passes through the second transistor T2 is transmitted to the second node Q2, that is, at this moment, the second node Q2 is simultaneously written into the potential signal of the first constant voltage source VDD and V ref , so it cannot be guaranteed that the potential of the second node Q2 is written into the ideal potential

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