Driving method of display panel, driving device thereof, and display device

Abstract

The embodiment of the present invention discloses a driving method of a display panel, its driving device, and a display device. By acquiring the gray scale data of the pre-display screen; according to the gray scale data, the gray scale values ​​of each first sub-pixel are all 0 and The sub-display area whose gray-scale value of each second sub-pixel is smaller than the first preset gray-scale value is determined as the first sub-display area; the gray-scale value of each first sub-pixel is not all 0 and / or each The sub-display area whose gray scale value unevenness of the second sub-pixel is smaller than the first preset gray-scale value is determined as the second sub-display area; The first reset signal provides the second reset signal to the anodes of the organic light emitting elements of the sub-pixels in the second sub-display area; wherein, the voltage of the first reset signal is lower than the voltage of the second reset signal. The embodiments of the present invention can solve the problem of stealing brightness of sub-pixels in low grayscale.

Description

technical field [0001] Embodiments of the present invention relate to the field of display technologies, and in particular to a method for driving a display panel, a driving device thereof, and a display device. Background technique [0002] Organic Light Emitting Diode (OLED) display panels are widely used in the field of optoelectronic display due to their advantages of low energy consumption, low production cost, self-illumination, wide viewing angle and fast response speed. [0003] An OLED display panel usually includes sub-pixels of red, green, and blue colors, each sub-pixel includes an organic light-emitting element, and the light-emitting materials in the organic light-emitting elements of sub-pixels of different colors are different, and the energy bands of different light-emitting materials There are differences that cause subpixels of different colors to operate at different voltages. Since the organic light-emitting element of the sub-pixel with a lower working...

AI Technical Summary

Problems solved by technology

Since the organic light-emitting element of the sub-pixel with a lower working voltage can emit light only with a smaller driving current, the sub-pixel with a higher working voltage in controlling adjacent sub-pixels emits light, and the sub-pixel with a lower working voltage does not When emitting light, the driving current in the organic light-emitting element of the sub-pixel with a higher operating voltage will flow to the sub-pixel with a lower operating voltage through the interconnected common layer, so that the sub-pixel with a lower operating voltage emits light (hereinafter referred to as "stealing light"). ), and the stealing problem is more obvious at low gray scales, which causes the color shift problem of the display panel, which in turn affects the display effect of the display panel

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