Organic light emitting display device

By dynamically adjusting the power supply voltage in an organic light-emitting display device to cope with changes in ambient temperature and brightness, the problems of color blurring and color shift are solved, achieving stable display effects and low power consumption.

CN116665598BActive Publication Date: 2026-06-09SAMSUNG DISPLAY CO LTD
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAMSUNG DISPLAY CO LTD
Filing Date
2019-02-25
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In organic light-emitting display devices, differences in luminous efficiency and response speed between pixels lead to color blurring and color shift during inter-frame image transitions, and traditional power control methods fail to effectively address the effects of changes in ambient temperature and brightness.

Method used

The power supply voltage regulation module dynamically adjusts the power supply voltage level of the organic light-emitting display device based on changes in ambient temperature and brightness. This includes the control of the second power supply voltage, the third power supply voltage, and the incremental voltage, ensuring a stable forward bias voltage under different conditions to optimize the light emission effect.

Benefits of technology

It effectively reduces color blurring and color shift, optimizes the display effect, and maintains stable luminous performance under different brightness and temperature conditions, thus reducing power consumption.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116665598B_ABST
    Figure CN116665598B_ABST
Patent Text Reader

Abstract

An organic light emitting display device is disclosed. The organic light emitting display device includes a display panel, a display panel driver, and a power supply. The display panel includes a plurality of pixels. Each of the plurality of pixels includes a driving transistor including a gate electrode and an organic light emitting diode configured to emit light based on a first power voltage and a second power voltage in an emission period. The display panel driver is configured to apply a scan signal, an emission control signal, and a data signal to the plurality of pixels. The power supply is configured to generate the first power voltage, the second power voltage, and a third power voltage applied to the plurality of pixels in a non-emission period, and adjust a voltage level of the second power voltage and a voltage level of the third power voltage based on a display brightness of the display panel, wherein the third power voltage is supplied to an anode of the organic light emitting diode without passing through the driving transistor, and the second power voltage is supplied to a cathode of the organic light emitting diode.
Need to check novelty before this filing date? Find Prior Art