Display Device Non-Intersecting Wiring via Printed Circuit Board
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Solution Overview
Problem
In liquid crystal display devices, the existing methods do not effectively arrange signal lines without intersection when mounting drive circuits and a display control circuit on a substrate, leading to potential wiring issues and inefficiencies.
Innovation Solution
The arrangement of power source voltage, gray-scale reference voltage, and control signal lines on the substrate is optimized such that they do not intersect, with specific terminal configurations and the use of a printed circuit board to supply voltages and signals to drive circuits, allowing for non-intersecting wiring and efficient data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal lines are arranged on the substrate to connect display control circuit and drive circuits, then signal transfer is enabled, but line intersections occur causing wiring complexity
Solution Approach 1:
The patent introduces a third dimension by using a flexible circuit board as a separate layer to carry signal lines between the display control circuit and drive circuits. This separates the wiring space from the substrate plane, eliminating line intersections while maintaining reliable signal transfer through spatial layering.
2Device complexity
If multiple terminal groups are arranged on drive circuits for power source voltage and gray-scale reference voltage, then non-intersecting wiring is enabled, but terminal arrangement complexity increases
Solution Approach 1:
The patent segments the terminal groups on drive circuits into distinct functional groups: power source voltage input terminals, gray-scale reference voltage input terminals, and gray-scale reference voltage output terminals. This segmentation organizes the connections systematically, enabling non-intersecting wiring patterns while maintaining manufacturability through standardized terminal layouts.
Data Source
AI summary
In a display device which mounts drive circuits and a display control circuit on a substrate which constitutes a display panel, signal lines can be arranged on the substrate which constitutes the display panel without making the signal lines intersect each other. A plurality of drive circuits and a display control circuit are mounted on a peripheral portion of one long side of a first substrate. A printed circuit board is connected to one long side of the first substrate. Each drive circuit mounts, on a surface thereof facing the first substrate, a group of power source voltage input terminals to which a power source voltage is supplied, a group of gray-scale reference voltage input terminals to which a gray-scale reference voltage is supplied, and a group of gray-scale reference voltage output terminals which sends gray-scale reference voltages.