Display Panel Shorting Bar Resistance Reduction
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Solution Overview
Problem
Conventional display panel designs experience color mixture and screen nonuniformity due to excessive stray capacitance from shorting bars during lighting tests, which is alleviated by reducing data voltage but results in low charging rates and screen splitting.
Innovation Solution
The display panel incorporates a lighting test unit with end-to-end connected shorting bars and additional conductive layers to reduce resistance, allowing rapid return of data voltage and minimizing color mixture and screen nonuniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If data voltage is reduced to avoid color mixture caused by stray capacitance, then color mixture is alleviated, but charging rate becomes excessively low causing screen splitting
Solution Approach 1:
The patent extracts and removes the shorting bars from the display area during normal operation. By providing a movable shorting bar structure that can be relocated to a non-display area or removed entirely, the harmful stray capacitance effect is eliminated while preserving the testing functionality when needed
Solution Approach 2:
The shorting bars are designed to be movable rather than fixed. The movable shorting bar can be dynamically positioned in different locations (display area for testing, non-display area for normal operation) based on operational requirements, allowing the system to adapt between testing and normal display modes
2Adaptability or versatility
If conventional bonding lead design with three independent shorting bars is used, then lighting test can be performed, but large stray capacitances are generated causing color mixture
Solution Approach 1:
The harmful shorting bars are extracted from the display area during normal operation and can be moved to a non-display area, eliminating the stray capacitance problem while preserving testing capability when needed
Solution Approach 2:
A movable shorting bar structure serves as an intermediary element that can be positioned in different locations. When needed for testing, it provides the necessary shorting function; when not needed, it can be moved away to eliminate its harmful capacitive effect
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
The solution effectively alleviates color mixture and screen splitting by reducing shorting bar resistance, ensuring stable data voltage and improved display uniformity.
Implementation Method 1
The third conductive line layer is electrically connected to the first conductive line layer through the first connection hole, and is electrically connected to the second conductive line layer through the second connection hole
Data Source
AI summary
The present disclosure discloses a display panel. The display panel includes a lighting test unit. The lighting test unit includes: signal input terminal sets, each including signal input terminals; shorting bar sets, each including shorting bars; and data signal line sets, each including data signal lines, where the signal input terminals are electrically connected to the shorting bars, the data signal lines are electrically connected to the shorting bars, and each shorting bar is connected end to end.