Display Panel Adhesive Tape Pattern for Light Leakage Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thin display panels are susceptible to deformation and damage from external forces, and light interference affects accurate color black reproduction, leading to reduced image quality due to light leakage.
Innovation Solution
A display device design featuring a bottom chassis with flanges, a supporting frame, and double-sided adhesive tape that is strategically attached to avoid overlapping with flanges, allowing the display panel to move freely and reducing stress concentration, thereby preventing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the display panel is made thinner to reduce device thickness, then the device becomes more compact and modern, but the display panel becomes more susceptible to deformation and damage from external forces
Solution Approach 1:
The patent applies beforehand cushioning by introducing a curvature to the display panel's lower surface. This pre-formed curvature acts as a cushioning structure that absorbs and distributes external forces before they can cause damage to the thin panel, thereby maintaining reliability while keeping the panel thin.
2Strength
If the double-sided adhesive tape is attached to the entire supporting frame, then the display panel is firmly secured, but stress concentration occurs at the flange areas causing light leakage
Solution Approach 1:
The patent applies local quality by making the adhesive tape's attachment pattern non-uniform. The tape is attached to most of the supporting frame but deliberately excluded from the flange areas. This creates different attachment characteristics in different locations: strong attachment where needed, and stress-free areas at the flanges where attachment would cause light leakage.
Solution Approach 2:
The patent applies taking out by removing the adhesive tape attachment from specific problematic areas (the flange regions). By extracting the attachment function from these localized areas while maintaining it elsewhere, the patent eliminates stress concentration at the flanges that causes light leakage, while preserving overall panel security.
3Manufacturing precision
If the display panel is firmly attached to prevent movement, then positioning accuracy is improved, but light leakage occurs due to stress concentration at attachment points
Solution Approach 1:
The patent applies local quality by creating differentiated attachment zones: the adhesive tape provides firm attachment in most areas to ensure positioning accuracy, while deliberately leaving the flange areas unattached to prevent stress concentration. This local variation in attachment quality resolves the contradiction between firmness and light leakage prevention.
Data Source
AI summary
A display device includes a bottom chassis, a flange protruding from an edge of the bottom chassis, a supporting frame disposed along a portion of the edge of the bottom chassis, a double-sided adhesive tape having a first adhesive side and a second adhesive side opposite to the first adhesive side, wherein the first adhesive side is adhered to the supporting frame, a display panel disposed on the bottom chassis and adhered to the second adhesive side of the double-sided adhesive tape, and a light source unit configured to provide light to the display panel. The double-sided adhesive tape is adhered to a first portion of the supporting frame and the double-sided adhesive tape is absent from a second portion of the supporting frame. The second portion of the supporting frame is disposed alongside the flange.