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Current-controlled display panel driving method and display panel

A display panel and current control technology, applied in the field of AMOLED, can solve the problems of response delay and long charging time, shorten the charging time, increase the overall power consumption, and overcome the effect of long charging time

Active Publication Date: 2016-10-05
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the existing AMOLED driving methods, a current-controlled display panel driving method and a display panel aiming at overcoming the defect that the charging time is too long during low-brightness (low-gray-scale) driving, resulting in delayed response, are provided.

Method used

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  • Current-controlled display panel driving method and display panel
  • Current-controlled display panel driving method and display panel
  • Current-controlled display panel driving method and display panel

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0037] A driving method of a current-controlled display panel of the present invention is applied to a display panel using an OLED device, wherein it includes a plurality of row scanning signals and a data signal providing a driving control current, and each row scanning signal controls the light emission of a row of OLED devices At time T, a plurality of row scanning signals are sequentially triggered, and the sequentially triggered row scanning signals can realize progressive scanning of the display panel, and all the row scanning signals are triggered once to form a frame period TF.

[0038] In the existing AMOLED drive technology, such as figure 1 As shown, the row scanning signal only provides one pulse in one frame period TF to control the corresponding OLED device to start emitting light....

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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 ...

Claims

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Application Information

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IPC IPC(8): G09G3/32
Inventor 郭文源魏嘉宏
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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