Photosensitive Resin Connection Lines for Narrow Frame Displays
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Solution Overview
Problem
Existing display devices face challenges in integrating touch sensing functionality with liquid crystal display panels while maintaining manufacturing cost efficiency and frame design flexibility.
Innovation Solution
A display device configuration featuring a first and second substrate with overlapping and non-overlapping areas, utilizing a photosensitive resin-based connection line to electrically connect conductive layers, which allows for reduced manufacturing costs and narrower frame designs by eliminating the need for additional circuit boards on the second substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional circuit boards are mounted on the second substrate to ensure electrical connectivity, then reliable electrical connection is achieved, but manufacturing cost increases and frame width increases
Solution Approach 1:
The patent extracts the circuit board component from the system by establishing direct electrical connection between substrates through connection lines formed on the substrate surfaces, eliminating the need for separate circuit boards and thereby reducing manufacturing cost and frame width while maintaining electrical connectivity
Solution Approach 2:
The patent merges the electrical connection function into the substrate structure itself by forming connection lines directly on the substrate surface, combining the substrate and connection pathway into a single integrated structure, which eliminates additional components and reduces overall device complexity
2Reliability
If additional circuit boards are mounted on the second substrate to ensure electrical connectivity, then reliable electrical connection is achieved, but frame width increases
Solution Approach 1:
The patent removes the circuit board from the system architecture and replaces it with direct substrate-to-substrate connection lines, extracting the unnecessary intermediate component and thereby reducing the frame width while maintaining electrical connection functionality
Solution Approach 2:
The patent transitions the electrical connection from a three-dimensional assembly involving separate circuit boards to a two-dimensional planar connection formed directly on the substrate surface, utilizing the substrate surface area for routing connection lines and thereby reducing the vertical and lateral footprint of the device
3Ease of manufacture
If conventional connection methods are used between substrates, then manufacturing process is simple, but electrical connectivity and touch sensing integration are compromised
Solution Approach 1:
The patent implements multi-functionality by using the same substrate structure and connection line formation process to achieve both display functionality and touch sensing integration, allowing the display device to perform multiple functions without requiring separate manufacturing processes or additional components
Solution Approach 2:
The patent combines the display substrate and touch sensing substrate into an integrated structure where connection lines are formed directly on the substrate surface, merging the electrical connection function with the touch sensing function and enabling both functionalities to coexist within a unified manufacturing process
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 configuration enables cost-effective production and design flexibility by ensuring efficient electrical connectivity between substrates, reducing manufacturing costs and allowing for a narrower frame, while maintaining touch sensing capabilities.
Implementation Method 1
a first connection line opposed to a first side surface of the second insulating substrate to electrically connect the first conductive layer and the second conductive layer. The first connection line is formed of a photosensitive resin containing a conductive material.
Data Source
AI summary
According to one embodiment, a display device includes a first substrate including a first insulating substrate located in a first area and a second area, and a first conductive layer provided in the second area, a second substrate including a second insulating substrate located in the first area, and a second conductive layer, and a first connection line opposed to a first side surface of the second insulating substrate to electrically connect the first conductive layer and the second conductive layer. The first connection line is formed of a photosensitive resin containing a conductive material.