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Driving method of display panel and display device

A technology of a display panel and a driving method, applied in static indicators, instruments, etc., can solve problems such as unstable electrical performance and screen flicker, and achieve the effect of compensating for unstable electrical performance, improving display brightness, and reducing screen brightness differences.

Pending Publication Date: 2021-03-16
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology

[0004] The present invention provides a method for driving a display panel and a display device, so as to make up for the defect of unstable electrical properties of transistors when switching display screens, reduce brightness differences and change time, and make the display screen reach the target brightness faster, solving problems caused by transistors. Screen flickering problem caused by hysteresis effect

Method used

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  • Driving method of display panel and display device
  • Driving method of display panel and display device
  • Driving method of display panel and display device

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0034] figure 1 It is a schematic diagram of the brightness change of the OLED display panel screen provided by the inventor during the research process, refer to figure 1 , Exemplarily, taking the picture refresh rate of the display panel as 1 Hz as an example, the inventors have found through research that when the OLED display panel switches from a black state to a display picture with a certain brightness during the drive display process, if multiple data refreshes are set frame, by repeatedly writing the dat...

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Abstract

The embodiment of the invention discloses a driving method of a display panel and a display device. According to the driving method of the display panel, at least one picture updating period comprisesa data writing stage, a data maintaining stage and a data compensating stage; the data compensating stage is before the data writing stage; in the data compensating stage, grid scanning signals are provided for the pixel units, compensation data voltage is written in, and the compensation data voltage is smaller than target data voltage; the target data voltage is a theoretical data voltage corresponding to the target brightness of the current picture updating period; and in the data writing stage, grid scanning signals are provided for the pixel units, target data voltage is written into thepixel units, and in the data maintaining stage, the data voltage is not written into the pixel units. According to the embodiment of the invention, the problem of picture flickering caused by a transistor hysteresis effect is solved, the picture is ensured to reach the target brightness as soon as possible during switching, and the picture brightness difference in the same picture updating periodis reduced, so that the picture display quality and effect are improved.

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 and a display device. Background technique [0002] A pixel circuit in an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display realizes a display function by controlling a driving current flowing through the OLED through a driving transistor. The magnitude of the driving current is related to the characteristic parameters of the driving transistor including the threshold voltage. [0003] In the existing OLED display process, when two different pictures are displayed, due to the difference in picture brightness, there will be a slow change process in the picture brightness during the switching process, and the brightness change process takes a long time, which is easy for human eyes to detect. As a result, the problem of picture flickering will be caused, and the picture display effect will b...

Claims

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Application Information

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IPC IPC(8): G09G3/3208G09G3/3258
CPCG09G3/3208G09G3/3258G09G2320/0233G09G2320/0247G09G2320/10G09G3/3233G09G3/3266
Inventor 李杰良杨铭
Owner XIAMEN TIANMA MICRO ELECTRONICS