An organic light emitting display panel and its driving method and driving device

Abstract

The embodiment of the present invention discloses an organic light-emitting display panel and its driving method and driving device. The driving method includes: setting each brightness level of the organic light-emitting display panel and the highest grayscale brightness corresponding to each brightness level; The highest gray-scale brightness corresponding to the highest brightness level of the display panel is the first highest gray-scale brightness, and the effective pulse duty ratio of the light-emitting control signal driving the first highest gray-scale brightness is the first effective pulse duty ratio; When the display screen of the display panel is switched, determine the target brightness level of the displayed screen after switching and the target highest gray-scale brightness corresponding to the target brightness level; according to the target highest gray-scale brightness, the first highest gray-scale brightness, and the second an effective pulse duty ratio, adjusting the target effective pulse duty ratio of the light-emitting control signal of the display screen after the driving is switched. The embodiments of the present invention can smoothly adjust the brightness of the organic light-emitting display panel and improve the display effect.

Description

technical field [0001] Embodiments of the present invention relate to display technologies, and in particular to an organic light emitting display panel, a driving method and a driving device thereof. Background technique [0002] As a new generation of display devices, organic electroluminescent devices have attracted widespread attention due to their unique characteristics such as self-luminescence, fast response, wide viewing angle and flexible display. Organic Light-Emitting Diode (OLED) is a current-driven active light-emitting display device, which can be divided into passive matrix organic light-emitting diode display device (PM-OLED) and active matrix organic light-emitting diode display device according to the driving method (AM-OLED). The instantaneous high current required by passive driving will lead to defects such as high power consumption and low efficiency, but the use of AM-OLED can overcome the above shortcomings and realize high-resolution and low-power c...

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Problems solved by technology

[0004] However, in the existing organic light-emitting diode display, it is impossible to achieve 256 changes in brightness levels in each equal time, that is, there is a jump in the brightness level change of the display, resulting in uneven changes in the brightness level of the display, which affects the performance of the organic light-emitting diode display. display effect

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