OLED Display Voltage Regulation Feedback Circuit
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Solution Overview
Problem
The irregular fluctuation of real voltage on OLEDs due to driving loading affects the uniformity and display effect of OLED displays, leading to suboptimal performance.
Innovation Solution
An OLED display unit with a regulation unit that adjusts the initial voltage based on real-time feedback to maintain a predetermined voltage, using a power module and a regulation circuit with a blocking and feedback sub-unit to stabilize the voltage input to the OLEDs, comprising resistances, capacitors, and a differential amplifier to generate feedback voltage for voltage regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a driving circuit is used to drive OLEDs, then the display can be controlled and operated, but the real voltage on OLEDs fluctuates irregularly due to driving loading effect
Solution Approach 1:
The patent implements a feedback mechanism where the real voltage of the power input terminal is detected and fed back to the power module. The power module adjusts the initial voltage based on this feedback to compensate for voltage fluctuations caused by driving loading, thereby maintaining stable voltage to OLEDs while preserving full driving control capability.
Solution Approach 2:
The patent introduces a power module as an intermediary between the driving circuit and OLEDs. This power module includes a regulation unit that detects real voltage and adjusts initial voltage accordingly, acting as a buffer that isolates OLEDs from direct voltage fluctuations caused by driving loading while maintaining operational control.
2Adaptability or versatility
If the real voltage fluctuates irregularly, then the driving circuit can adapt to varying loading conditions, but the uniformity of the display unit downgrades
Solution Approach 1:
The feedback mechanism continuously monitors real voltage and adjusts initial voltage to compensate for fluctuations, ensuring that OLEDs receive stable voltage regardless of varying loading conditions. This maintains display uniformity while preserving the ability to adapt to different operating states.
Solution Approach 2:
The patent dynamically changes the initial voltage parameter based on detected real voltage conditions. The power module adjusts voltage parameters in real-time to compensate for loading effects, maintaining consistent display quality across varying operating conditions without sacrificing adaptability.
Data Source
AI summary
The present invention provides an organic light-emitting diode (OLED). The OLED comprises a driving circuit having a power module and a regulation unit. The power module is used to input an initial voltage to the power input terminal of pixel-driving unit. The regulation unit regulates the initial voltage, which is outputted from the power input terminal, based on the real voltage of the power input terminal in the pixel-driving unit for equalizing the real voltage of the power input terminal to a predetermined voltage.