Current-controlled display panel driving method and display panel

Abstract

The invention discloses a current-controlled display panel driving method applied to a display panel with OLED devices, which comprises data signals composed of a plurality of line scanning signals and used for providing a driving control current. Each line scanning signal controls the light-emitting time of each line of the OLED devices. The plurality of line scanning signals are sequentially triggered in turn. Each of the line scanning signals provides an initial signal to control the corresponding OLED devices to emit the light and also provides an ending signal to control the corresponding OLED devices to stop the light-emitting process. The duration of the light-emitting time of the corresponding OLED devices can be controlled through adjusting the time interval between the initial signal and the ending signal. According to the technical scheme of the invention, signals for controlling the light-emitting time of the OLED devices are added in the line scanning signals. In this way, the light-emitting time of the OLED devices is reduced according to the display requirement of low brightness (low gray). Therefore, the defect of response delay due to the long charging time in the low-brightness (low-gray) driving condition can be overcome.

Description

technical field [0001] The invention relates to the technical field of AMOLED (Active Matrix Organic Light Emitting Diode), in particular to a current control driving method for a display panel formed by an AMOLED device and the display panel. Background technique [0002] AMOLED has the characteristics of fast response, high contrast, and wide viewing angle, which makes AMOLED have greater advantages over TFT LCD (Thin Film Transistor Liquid Crystal Display). In addition, AMOLED has the characteristics of self-illumination and does not need to use a backlight , so it can be made thinner and lighter than TFT LCD, and it is more power-saving; there is another more important feature, AMOLED that does not need a backlight can save the backlight module that accounts for 30%-40% of the cost of TFT LCD. [0003] Existing AMOLEDs are generally driven by a voltage-controlled driving method or a current-controlled driving method. Among them, although the voltage control circuit has ...

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