Overlapping Connection Units in Display Devices
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Solution Overview
Problem
Liquid crystal display (LCD) devices face challenges in reducing manufacturing costs and minimizing defective rates during production.
Innovation Solution
The design incorporates a substrate with a display area and non-display area, featuring pad terminals and connection units arranged in specific rows, with overlapping connection units and a printed circuit board for efficient electrical connections, reducing the complexity and susceptibility to defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple connection units are arranged in separate rows with traditional spacing, then manufacturing processes are simpler, but the defective rate increases and manufacturing costs rise
Solution Approach 1:
The patent merges multiple connection units (first connection unit and second connection unit) into an overlapping arrangement where they share common spatial region. This merging reduces the total number of discrete components and simplifies the overall connection structure, thereby reducing manufacturing costs and defective rate while maintaining functional independence of each connection unit.
Solution Approach 2:
The patent transitions from a traditional planar arrangement of connection units to a three-dimensional overlapping configuration. By utilizing vertical stacking and overlapping in the Z-dimension, the connection units can share common lead lines and mounting structures, reducing the footprint and simplifying the manufacturing process while improving reliability.
2Ease of manufacture
If connection units are arranged to overlap, then manufacturing costs are reduced and defective rate decreases, but the structural complexity increases
Solution Approach 1:
The overlapping connection units share common lead lines and mounting structures, making these components multi-functional. The first and second lead lines serve both connection units, reducing the total number of components needed and simplifying the manufacturing process. This universal approach lowers material costs and assembly complexity.
Solution Approach 2:
The patent implements a nested arrangement where the first connection unit and second connection unit are positioned such that they overlap and share common spatial regions. The second connection unit is arranged to overlap the first connection unit, creating a nested configuration that reduces overall device footprint and simplifies manufacturing.
3Area of stationary object
If lead lines are arranged to intersect, then space is saved and manufacturing is simplified, but signal interference may increase
Solution Approach 1:
The patent employs asymmetric routing of lead lines where the first lead line and second lead line are positioned at different heights and angles in the overlapping region. This asymmetric arrangement minimizes parallel coupling length between intersecting lines, reducing capacitive coupling and signal interference while still achieving space-efficient layout.
Solution Approach 2:
The patent introduces shielding structures and ground planes as intermediary elements between intersecting lead lines. These intermediary components act as electromagnetic shields, blocking interference between the first and second lead lines while allowing the lines to cross in the overlapping connection unit arrangement.
Data Source
AI summary
A display device including: a substrate including a display area and a non-display area; a first pad terminal and a second pad terminal disposed in the non-display area, the first pad terminal arranged along a first row and the second pad terminal arranged along a second row; a first connection unit connected to the first pad terminal; a first driving integrated circuit connected to the first connection unit; a second connection unit connected to the second pad terminal; and a second driving integrated circuit connected to the second connection unit, wherein first connection unit is disposed overlapping the second connection unit.