LCD Frame Structure with Staggered Glue Slots
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Solution Overview
Problem
Conventional liquid crystal displays (LCDs) with narrow or zero bezels and curved panels often experience light leakage and glue overflowing issues during assembly, leading to increased production time and yield loss due to uneven silica gel distribution and prolonged solidification times.
Innovation Solution
A frame structure with staggered glue receiving slots and holes/troughs on its surfaces, designed to accommodate and manage silica gel overflow, using black silica gel with high adhesion and ductility to securely attach the frame to the backplane and panel, preventing light leakage and simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the frame is plane-shaped for dispensing, then the structure is simple, but glue overflowing easily occurs and production yield is severely affected
Solution Approach 1:
The frame structure incorporates localized three-dimensional protrusions at specific positions where glue overflow is prone to occur. These protrusions create dedicated receiving spaces that contain the excess glue locally, preventing it from spreading to other areas. This local structural modification maintains the overall simplicity of the frame while effectively solving the glue overflow problem that harms production yield.
2Ease of manufacture
If conventional dispensing is used, then the process is simple, but silica gel cannot be evenly distributed and light leakage occurs after high temperature test
Solution Approach 1:
The three-dimensional protrusions are pre-formed on the frame structure before the dispensing process. These protrusions create predetermined receiving spaces that guide and contain the silica gel during dispensing, ensuring even distribution of the adhesive material. By preparing the structural features in advance, the system ensures reliable glue distribution and prevents light leakage after high temperature testing without complicating the dispensing process.
3Strength
If more screws are used to secure the frame, then the attachment strength is improved, but assembly time and manpower increase
Solution Approach 1:
The three-dimensional protrusions create curved or non-planar receiving spaces on the frame structure. These three-dimensional features increase the surface area and create mechanical interlocking effects with the silica gel, significantly enhancing the attachment strength between the frame and backlight unit. The improved adhesion from the curved structural features allows for reduced screw usage while maintaining secure attachment, thereby reducing assembly time and manpower requirements.
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
The solution effectively prevents light leakage, reduces assembly manpower, eliminates pollution from conductive adhesive and foam, and enhances production efficiency by ensuring strong and even silica gel adhesion, allowing for fewer screws to secure the frame and backplane, while maintaining a thin and efficient assembly process.
Implementation Method 1
using black silica gel with high adhesion and ductility to securely attach the frame to the backplane and panel
Data Source
AI summary
A liquid crystal display includes: a back light unit, including a back light module and a backplane bearing the back light module; a liquid crystal display panel, engaged with the backplane by means of a spacer; and a frame structure, including: a spacer, having a first surface and a second surface, and formed by extending in a direction perpendicular to a periphery of the frame structure towards a position between the backplane and the liquid crystal display panel; a first glue receiving slot, disposed at a rear end of the spacer; and a second glue receiving slot, disposed at a front end of the spacer, where the first and second glue receiving slots are disposed in a staggered manner, the first glue receiving slot is located at the first surface of the spacer, and the second glue receiving slot is located at the second surface of the spacer.