OLED Driver Circuit Emission Control for Selective Power Saving
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Solution Overview
Problem
Conventional OLED display systems cannot save power by disabling only one or several driver circuits, as all driver circuits must be simultaneously on or off, limiting power-saving options to reducing frame rate or brightness.
Innovation Solution
A method where a first driver circuit can output emission control signals to control a second area of the OLED panel even when the second driver circuit is disabled, allowing for selective power saving by enabling the first driver circuit while disabling the second, and outputting black image data when the first driver circuit is disabled to maintain a black screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple driver circuits are used to control different areas of the OLED panel, then the display coverage and resolution are improved, but the power consumption increases and cannot be selectively reduced
Solution Approach 1:
The patent segments the control of emission timing by area, allowing each driver circuit to independently control emission for its assigned area. This enables selective disabling of specific driver circuits for their respective areas without affecting other areas, thus reducing overall power consumption while maintaining display coverage.
Solution Approach 2:
The patent implements dynamic control where the first driver circuit can adaptively output emission control signals to the second area when the second driver circuit is disabled. This dynamic signal routing allows the system to flexibly adjust power consumption based on display requirements for different areas at different times.
2Reliability
If all driver circuits are kept on to maintain display functionality, then the image display quality is maintained, but power saving opportunities are lost
Solution Approach 1:
The patent prepares the first driver circuit to potentially take over emission control for the second area in advance. When the second driver circuit is disabled, the first driver circuit can immediately provide the necessary emission control signals, ensuring continuous display functionality without interruption while enabling power saving.
Solution Approach 2:
The first driver circuit is designed with multi-functionality, capable of controlling both its own assigned first area and the second area when needed. This universality allows the system to reduce the number of active driver circuits while maintaining full display functionality, achieving power savings without compromising reliability.
3Use of energy by moving object
If emission control signals are not provided to a disabled driver circuit's area, then power consumption is reduced, but abnormal emission or display defects occur
Solution Approach 1:
The first driver circuit acts as an intermediary by providing emission control signals to the second area when the second driver circuit is disabled. This intermediary control prevents abnormal emission in the second area while allowing the second driver circuit to remain disabled for power saving, thus eliminating harmful effects without sacrificing energy efficiency.
Data Source
AI summary
A first driver circuit is configured to cooperate with a second driver circuit to control a display panel, wherein the first driver circuit is configured to output display data to a first area of the display panel and the second driver circuit is configured to output display data to a second area of the display panel. A method used for the first driver circuit includes outputting at least one emission control signal to control the second area of the display panel when the second driver circuit is disabled.