Display Power Link Line Holes for Voltage Drop
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Solution Overview
Problem
Next-generation display devices, such as liquid crystal, organic light emitting diode, and quantum dot displays, face issues with power voltage drop and non-uniform luminance due to varying resistance in power lines, leading to luminance uniformity problems.
Innovation Solution
A display device design featuring a substrate with an active area and an inactive area, where a horizontal power line with strategically placed holes and additional power link lines adjusts resistance to minimize power voltage drop differences, ensuring uniform power distribution to pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power voltage is transmitted through horizontal power lines from the center to the sides of the display device, then the degree of freedom for designing the inactive area is increased, but the power voltage drop becomes non-uniform across different power lines
Solution Approach 1:
The patent introduces holes at specific locations in the power link line to create local variations in resistance. By strategically placing holes with different sizes and positions, the resistance of each power line segment is locally adjusted to compensate for the distance from the center, ensuring uniform power voltage distribution across all power lines while maintaining the horizontal power line configuration from the center to sides
2Ease of manufacture
If the center of the display device is used as the initial lead-in point of power voltage, then design freedom of the inactive area is improved, but the power voltage supplied to pixels becomes non-uniform
Solution Approach 1:
The patent modifies the resistance parameter of the power link line by introducing holes with specific sizes, shapes, and positions. This changes the electrical characteristics of the power distribution network, allowing the center-based power input configuration to achieve uniform power voltage supply to all pixels by compensating for distance-related voltage drops through localized resistance adjustments
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 design enhances luminance uniformity by reducing power voltage drop differences across power lines, allowing for more flexible design and improved power voltage uniformity, thus enhancing the display's reliability and image quality.
Implementation Method 1
the first power link line includes a hole which increases the length of the route through which power voltage is transmitted
Data Source
AI summary
A display device with a substrate including an active area having a plurality of pixels, and an inactive area adjacent to the active area; a plurality of power lines in the active area, connected to the plurality of pixels; a first power link line in the inactive area configured to receive power voltage and transmit the power voltage to the plurality of power lines; and a first hole disposed in the first power link line.