Device and method for reducing ghosts of OLED (organic light emitting display) panel

Abstract

The invention relates to a device and method for reducing the ghosts of an OLED (organic light emitting display) panel. The device for reducing the ghosts of the OLED (organic light emitting display) panel includes a control unit, a detection unit and a display data arrangement unit; the control unit receives area control signals and time control signals, wherein the area control signals are used for determining the size and location of a target area, and the time control signals are used for determining a duration after which special display is carried out on the target area, a static pattern being displaying in the duration; the detection unit receives original image data, detects whether the static pattern exists in the target area, and transmits detected target area image information to the display data arrangement unit; and the display data arrangement unit receives the original image data, also receives the control signals of the control unit and the target area image information of the detection unit, and determines whether to start the special display of the target area. The invention also provides a corresponding method. With the device and method of the invention adopted, the ghosts can be decreased, and the overall display effect of the panel will not be affected.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a device and a method for reducing residual image of an OLED display panel. Background technique [0002] The flat panel display device has many advantages such as thin body, power saving, and no radiation, and has been widely used. Existing flat panel display devices mainly include liquid crystal display devices (LCD, Liquid Crystal Display) and organic light emitting display devices (OLED, Organic Light Emitting Display). [0003] Organic light-emitting display devices have the characteristics of self-illumination, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so they have received extensive attention, and as a new generation of display methods, they have gradually replaced traditional liquid crystal display devices. Widely used in mobile phone screens, computer monitors, full-color TVs, etc. OLED display technol...

AI Technical Summary

Problems solved by technology

[0005] However, as the use time increases, holes and electrons will accumulate at the interface between the transport layer and the light-emitting layer, forming a built-in electric field inside the OLED, increasing the threshold voltage of the OLED, and reducing its luminous brightness.

For OLED panels, some areas are particularly prone to image sticking, such as the corners where TV station logos and advertisements are displayed on the screen for a long time, and areas where still images are displayed for a long time will be different from other areas due to pixel aging. cause long-lasting afterimages

Images