LCD Spacer with Heating Solution for Stable Electrical Contact
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Solution Overview
Problem
In large-size and high-resolution liquid crystal displays (LCDs), the increased number of wirings leads to unstable electrical contacts in non-display areas, potentially causing contact defects and increasing the non-display area, which is undesirable for achieving a slim bezel design.
Innovation Solution
A stable electrical connection is maintained between the common power supply line and the common electrode using a spacer with a conductive ball that includes a heating solution, which generates heat when pressure is applied, allowing for the removal of alignment layers and ensuring a secure connection without expanding the non-display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of wirings is increased to achieve large-size and high-resolution display, then the display resolution is improved, but the non-display area increases and electrical contact stability deteriorates
Solution Approach 1:
The connection structure is segmented into multiple functional components: a spacer providing mechanical support and positioning, a conductive ball ensuring electrical contact, and a heating solution enabling alignment layer removal. This segmentation allows each component to optimize its specific function, improving overall connection reliability without expanding the non-display area.
Solution Approach 2:
The heating solution changes the thermal parameter of the connection structure, generating heat when pressure is applied. This temperature change enables the removal of alignment layers and ensures stable electrical contact between the common power supply line and common electrode, resolving the contact stability issue.
2Area of stationary object
If the non-display area is increased to accommodate more wirings, then the wiring space is improved, but the bezel width increases
Solution Approach 1:
Multiple functions are merged into the spacer component: mechanical support, electrical connection facilitation, and alignment layer removal through heating. This consolidation eliminates the need for separate structures that would occupy additional non-display area, maintaining a slim bezel while providing sufficient wiring space through efficient space utilization.
Solution Approach 2:
The spacer is designed as a multi-functional element that simultaneously provides mechanical positioning, enables electrical contact through the conductive ball, and removes alignment layers via the heating solution. This multi-functionality reduces the overall space requirement in the non-display area, allowing for a narrower bezel.
3Reliability
If a stable electrical connection is achieved between common power supply line and common electrode, then the contact reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The heating solution within the conductive ball provides self-service by generating heat automatically when pressure is applied during assembly. This eliminates the need for external heating equipment or complex thermal management systems, achieving reliable alignment layer removal and stable electrical contact while keeping the manufacturing process relatively simple.
Solution Approach 2:
The conductive ball is pre-filled with the heating solution before assembly. This preliminary preparation ensures that when the spacer is compressed during manufacturing, the heating solution immediately activates to remove alignment layers and establish stable electrical contact, simplifying the manufacturing process by eliminating subsequent heating steps.
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 ensures a stable and secure electrical connection between the common power supply line and the common electrode, preventing contact defects and maintaining a slim bezel design by eliminating the need for additional space in the non-display area.
Implementation Method 1
the conductive ball includes a heating solution, which generates heat when pressure is applied
Data Source
AI summary
A liquid crystal display includes: a first substrate on which a display area and a non-display area disposed around the display area are defined; a second substrate disposed opposite to the first substrate; a common electrode disposed on the second substrate; a common power supply line disposed in the non-display area of the first substrate to provide a common voltage; and a spacer disposed on the common power supply line to connect the common power supply line and the common electrode, where the spacer includes a conductive ball, and the conductive ball includes a heating solution.