Display Panel Optical-Area Conductive Buffer for Thermal Stress
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Solution Overview
Problem
Existing display devices face issues with stress application to the display panel, particularly in high-temperature or low-temperature environments, leading to thermal deformation and potential cracking.
Innovation Solution
The display device incorporates a conductive member between the display panel and the molding member at the optical area, serving as a buffer to reduce stress and discharge static electricity, while a light-blocking member is placed in the through-hole to inhibit light transmission and improve reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the display panel is directly mounted without additional buffer structures, then the device complexity is reduced, but stress concentration occurs at the edges leading to cracking in thermal environments
Solution Approach 1:
A conductive member is introduced as an intermediary element between the display panel and the molding member. This conductive member serves as a buffer that absorbs and distributes stress, preventing direct stress transmission to the display panel edges while also providing static electricity discharge pathways.
Solution Approach 2:
The patent employs composite material structures by combining the conductive member with the molding member and display panel. This composite approach creates a multi-functional assembly that simultaneously provides mechanical stress relief, electrical conductivity for static discharge, and structural support.
2Reliability
If the conductive member is disposed at all sides of the display panel, then stress distribution and static electricity discharge are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The conductive member is strategically positioned only at specific locations adjacent to the optical area rather than uniformly around the entire display panel. This localized approach concentrates stress relief and static discharge capabilities where they are most needed (near the optical area and edges) while reducing overall device complexity and manufacturing difficulty.
3Ease of manufacture
If the through-hole is left open without light-blocking member, then the manufacturing process is simpler, but light from subpixels leaks into the through-hole reducing display quality
Solution Approach 1:
A light-blocking member is extracted and placed within the through-hole structure. This separate component specifically addresses light leakage by absorbing or blocking light from subpixels that would otherwise enter the through-hole, while the rest of the manufacturing process remains relatively simple.
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 reduces stress on the display panel, minimizes cracking, and enhances the device's reliability by managing thermal deformation and static electricity discharge.
Implementation Method 1
the conductive member may define the path through which static electricity generated on the cover member is discharged
Data Source
AI summary
A display device including a display panel including a display area, and an optical area disposed in the display area and including a through-hole, a cover member disposed on the display panel, a support member disposed below the display panel, a metal plate disposed below the support member, a frame including a lower frame disposed below the metal plate, and a lateral frame disposed to surround side surfaces of the display panel, the support member, and the metal plate, a molding member disposed between the display panel, the cover member, the support member, the metal plate, and the frame, and a conductive member disposed between the molding member and the side surface of the display panel, the support member, and the metal plate at one side of the display panel adjacent to the optical area.