Voltage Generator Feedback for Display Panel Initialization
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Solution Overview
Problem
Display devices face challenges in compensating for voltage level changes in driving voltages due to varying operating environments, which can affect the quality and consistency of the images displayed.
Innovation Solution
The display device incorporates a voltage generator that receives feedback driving voltage from the display panel and generates an initialization voltage, which is used to adjust the voltage levels for the light emitting elements, ensuring optimal operation across different environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed driving voltage is supplied to the display panel, then the power manager operates simply, but the display quality deteriorates due to voltage level changes in varying operating environments
Solution Approach 1:
The patent implements a feedback mechanism where the voltage generator receives feedback signals about the actual voltage level at the display panel and adjusts the initialization voltage accordingly. This closed-loop control compensates for voltage drops caused by resistance in connection conductors, ensuring stable display performance across different operating conditions without requiring complex centralized power management.
Solution Approach 2:
The patent applies local quality by providing customized initialization voltages to different regions or pixel groups based on their specific voltage requirements. Each voltage generator operates independently to compensate for local voltage drops, allowing tailored voltage compensation for different areas of the display panel rather than using a uniform approach.
2Reliability
If the initialization voltage is adjusted to compensate for driving voltage changes, then display quality is maintained, but the voltage generator complexity increases
Solution Approach 1:
The voltage generator uses feedback signals representing actual voltage levels at the display panel to dynamically adjust initialization voltages. This feedback mechanism enables automatic compensation for driving voltage changes without requiring complex manual calibration or control systems.
Solution Approach 2:
The patent changes the voltage parameter dynamically by adjusting the initialization voltage level based on detected voltage drops. The voltage generator modifies its output parameter (initialization voltage) in response to operating conditions, enabling adaptation to different environments while maintaining a relatively simple generator structure.
3Reliability
If resistance in connection conductors is reduced, then voltage stability improves, but the device size and cost increase
Solution Approach 1:
Instead of reducing physical resistance through thicker or shorter conductors (which would increase cost and complexity), the patent uses electrical feedback to detect voltage drops and compensates through software/control mechanisms. This approach maintains voltage stability without requiring expensive material or structural changes.
Solution Approach 2:
The patent introduces an intermediary compensation mechanism (the voltage generator with feedback control) that mediates between the power manager and display panel. This intermediary detects voltage issues and provides compensating signals, avoiding the need for expensive low-resistance connection conductors while maintaining voltage stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for effective compensation of voltage level changes, thereby maintaining display quality and consistency, even in varying operating conditions.
Implementation Method 1
a voltage generator which receives a feedback driving voltage from the display panel and generates the initialization voltage based on the feedback driving voltage
Data Source
AI summary
A display device includes: a display panel which receives a driving voltage and an initialization voltage; a power manager which provides the driving voltage to the display panel; and a voltage generator which receives a feedback driving voltage from the display panel and generates the initialization voltage based on the feedback driving voltage. The feedback driving voltage is a voltage that is fed back to the voltage generator after the driving voltage supplied from the power manager passes through the display panel.