Reusable LCD Wiring Structure with Switching Transistor
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Solution Overview
Problem
Current liquid crystal display (LCD) inspection systems incur high production costs as they are discarded after yield rate inspection, necessitating a cost-effective solution for reusing the inspection infrastructure.
Innovation Solution
A wiring structure for LCDs featuring RGB signal lines, signal control lines, and a switching line with a semiconductor-based switching transistor that controls connections and disconnections between the signal lines, allowing for reusable inspection and touch panel functionality without the need for laser cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the current inspection system is discarded after yield rate inspection, then the inspection function is completed, but the production cost increases
Solution Approach 1:
The patent applies the discarding and recovering principle by enabling the inspection system to be reused after yield rate inspection. The wiring structure allows the inspection system to perform both yield rate inspection and subsequent touch panel functionality inspection, recovering the value of the inspection system instead of discarding it after single-use inspection.
Solution Approach 2:
The patent implements universality by designing the wiring structure to serve multiple functions. The same wiring structure is used for both yield rate inspection (short bar technology) and touch panel functionality inspection, eliminating the need for separate inspection systems and reducing overall production costs.
2Ease of operation
If laser cutting is used to disconnect signal lines after inspection, then the inspection system can be separated, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent applies the extraction principle by removing the need for laser cutting through the switching transistor mechanism. The inspection system can be electrically disconnected via the switching transistor controlled by control signals, extracting the separation function from the physical cutting process and eliminating manufacturing complexity.
3Loss of substance
If the wiring structure is designed for reusable inspection, then production cost is reduced, but the device complexity increases
Solution Approach 1:
The patent uses the switching transistor as an intermediary element between the inspection system and the display panel circuitry. This intermediary component enables reusable inspection functionality through electrical control without requiring complex reconfigurable wiring, managing device complexity while achieving cost reduction.
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 reduces manufacturing costs by enabling the reuse of the wiring structure for inspection and touch panel control, eliminating the need for laser cutting and enhancing operational convenience.
Implementation Method 1
the switching transistor comprises a control terminal for receiving a control signal, and controls a connection or a disconnection between the three signal control lines and the RBG signal lines according to the control signal
Data Source
AI summary
A wiring structure and a display panel are provided, and have red, green, and blue (RGB) signal lines; three signal control lines; and a switching line having a switching transistor disposed thereon. Each of the RGB lines has a terminal connecting correspondingly to the switching transistor, and connects correspondingly with the signal control lines through the switching transistor. The switching transistor comprises a control terminal for receiving a control signal, and controls the connection or disconnection between the three signal control lines and the RGB lines according to the control signal. The wiring structure can be used as an inspection system for the display panel.