Display Device Frame Region Power Voltage Stabilization
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Solution Overview
Problem
In display devices with a configuration where two casings are physically coupled and opened closed, the narrowing of the frame region to accommodate thinner wiring lines leads to instability in the power source voltage due to increased resistance, causing malfunctions and display image failures.
Innovation Solution
The display device incorporates a configuration with a driver IC in the frame region, first and second power source wiring lines, and electrodes arranged to face these wiring lines via insulating layers, providing electrostatic capacitance to compensate for electric charge supply and stabilize the power source voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the frame region is narrowed to accommodate thinner wiring lines, then the display device achieves frame narrowing and aesthetic improvement, but the power source voltage becomes unstable due to increased resistance
Solution Approach 1:
The patent introduces a third dimension by forming an electrode structure that extends vertically between the first and second substrates, creating a distributed capacitance network that stabilizes power source voltage without affecting the horizontal frame width reduction
Solution Approach 2:
The insulating layer acts as an intermediary between the first and second substrates, enabling the formation of capacitance while maintaining electrical isolation and allowing the electrode to stabilize voltage without direct contact with the substrates
2Shape
If thinner wiring lines are used to narrow the frame, then the display device achieves frame narrowing, but the resistance of power source wiring lines increases causing voltage fluctuation
Solution Approach 1:
The patent creates a vertical capacitance network between substrates that provides energy storage in the third dimension, compensating for the increased resistance of thinner horizontal wiring lines without requiring wider frames
Solution Approach 2:
The patent changes the electrical parameters by introducing capacitance between the first and second substrates, which modifies the voltage-current relationship and stabilizes power source voltage despite increased wiring line resistance
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 configuration reduces voltage fluctuation even under large voltage loads, stabilizing the power source voltage and preventing malfunctions and display failures, while also allowing for frame narrowing.
Implementation Method 1
a first electrode that is arranged so as to face the first power source wiring line and the second power source wiring line via a first insulating layer, and is electrically coupled to the first power source wiring line
Data Source
AI summary
A display device includes a display region having a plurality of pixels, a driver IC provided in a frame region on an outer side of the display region and configured to drive the pixels, a first power source wiring line and a second power source wiring line each electrically coupled to the driver IC, and a first electrode that is arranged so as to face the first power source wiring line and the second power source wiring line via a first insulating layer, and is electrically coupled to the first power source wiring line.