OLED Emission Control Driver for Flexible Brightness Adjustment
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Solution Overview
Problem
Existing organic light emitting displays face complications in controlling brightness due to complex processes required to adjust data bits in response to external light, making it difficult to freely control emission control signals.
Innovation Solution
An emission control driver with a simple structure, comprising multiple signal processing units and transistors, allows for the independent control of emission control signals, enabling flexible adjustment of signal widths to manage panel brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If data bits are controlled to correspond to external light for brightness control, then brightness control is achieved, but the process becomes complicated
Solution Approach 1:
The invention changes the control parameter from data bit manipulation to emission control signal width adjustment. By varying the width of the emission control signal, the brightness of the OLED panel is directly controlled without complex data processing. The emission control driver generates signals with different pulse widths to achieve different brightness levels, simplifying the overall control mechanism.
2Ease of operation
If emission control signals are supplied to overlap scan signals to set pixels in non-emission state, then pixel selection is achieved, but flexibility in emission control is limited
Solution Approach 1:
The invention introduces dynamic control of emission control signals through a dedicated emission control driver that can independently adjust signal width and timing. This allows the emission control to adapt to different operating conditions and brightness requirements, providing flexibility while maintaining proper pixel selection through scan signal coordination.
Data Source
AI summary
There is provided an emission control driver including a first signal processing unit for receiving an input power from an input power source, a main input signal, and a sub input signal, and for outputting a first output signal and a second output signal, a second signal processing unit for receiving the first output signal, the second output signal, and a clock signal, and for outputting a third output signal, and a third signal processing unit for receiving the first output signal and the second output signal, and for outputting an emission control signal. The width of the emission control signals may be freely controlled and the emission control driver having a simple structure, and the organic light emitting display using the same, may be provided.