Reference Voltage Line Moisture Removal in Display Devices
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Solution Overview
Problem
Display devices face short-circuit failures due to moisture permeation in reference voltage lines, which existing methods fail to prevent effectively.
Innovation Solution
A method to prevent short-circuit failures in reference voltage lines by identifying moisture permeation and removing it through the application of a first reference voltage, followed by repeated charging and discharging to increase heat and evaporate the moisture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If moisture permeates the reference voltage lines, then short-circuit failure occurs, but applying reference voltage to remove moisture increases energy consumption
Solution Approach 1:
The patent applies a preliminary action by detecting moisture permeation in advance and applying reference voltage to evaporate moisture before short-circuit failure occurs. The controller detects voltage changes indicating moisture presence and activates the reference voltage application process proactively, preventing the short-circuit condition from developing.
Solution Approach 2:
The patent utilizes parameter changes by varying the reference voltage levels to control the evaporation process. Different voltage levels are applied based on the detected moisture condition, optimizing the energy consumption while effectively removing moisture. The voltage parameter is adjusted to achieve the desired evaporative effect without excessive energy waste.
2Reliability
If reference voltage is applied continuously to remove moisture, then humidity is reduced effectively, but device complexity increases
Solution Approach 1:
The patent implements feedback by having the controller continuously monitor voltage changes in the reference voltage lines to detect moisture presence. Based on this feedback, the controller dynamically adjusts the reference voltage application, stopping when moisture is sufficiently removed. This closed-loop control achieves effective humidity reduction without requiring overly complex continuous operation mechanisms.
Solution Approach 2:
The patent applies self-service by utilizing the reference voltage lines themselves as both the signal transmission medium and the heating element for moisture evaporation. The same electrical lines that carry reference voltage for display operation are used to generate heat for drying, eliminating the need for separate dedicated drying components and reducing overall device complexity.
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 method effectively lowers humidity around the reference voltage lines, preventing short-circuit failures and ensuring reliable operation of display devices.
Implementation Method 1
repeated charging and discharging to increase heat and evaporate the moisture
Data Source
AI summary
Discussed is a short-circuit failure preventing method for reference voltage lines in a display device. The method includes identifying whether moisture permeates the reference voltage lines, and removing the moisture from the reference voltage lines when it is identified that the moisture permeates the reference voltage lines. Removing the moisture from the reference voltage lines includes applying a reference voltage to the reference voltage lines.