Display Apparatus with Stress Reliever for Narrow Bezel
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Solution Overview
Problem
The thermal compression process for mounting data driving chips on display panels can cause light leakage and damage to the active region, leading to a broader bezel due to heat and pressure stress.
Innovation Solution
The use of data driving chips with stress relievers extending at acute angles, allowing them to be positioned closer to the active region while reducing stress and light leakage, thereby minimizing bezel width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If data driving chips are mounted close to the active region to reduce bezel width, then the bezel becomes narrower, but light leakage and active region damage occur due to thermal compression stress
Solution Approach 1:
A stress reliever structure is introduced as an intermediary element between the data driving chip and the display panel. This stress reliever includes a first extension portion and a second extension portion that extend in different directions, acting as a buffer to absorb and distribute the thermal compression stress during the mounting process, thereby preventing direct transmission of harmful stress to the active region while allowing the chip to be positioned close to the active region for narrow bezel design
Solution Approach 2:
The stress reliever changes the physical parameters of the mounting structure by extending in multiple directions with different lengths. The first extension portion extends in a first direction and the second extension portion extends in a second direction, creating a geometric configuration that transforms the stress distribution pattern during thermal compression, reducing peak stress concentrations that would otherwise damage the active region
2Object-affected harmful factors
If data driving chips are spaced apart from the active region to reduce light leakage, then light leakage is reduced, but the bezel becomes broader
Solution Approach 1:
The stress reliever serves as a protective intermediary that enables close positioning of the data driving chip to the active region without causing light leakage or damage. By absorbing thermal stress, it eliminates the need to space the chip away from the active region, thus preventing bezel widening while still protecting against light leakage through proper stress management
3Ease of manufacture
If thermal compression is applied to mount data driving chips, then mounting is achieved, but heat and pressure damage the active region
Solution Approach 1:
The stress reliever is designed with extension portions that beforehand cushion the thermal compression stress before it reaches the active region. The first extension portion and second extension portion create a buffer zone that absorbs and distributes the heat and pressure during the mounting process, protecting the active region from damage while still enabling successful chip mounting
Solution Approach 2:
The multi-directional extension structure of the stress reliever changes the stress transmission parameters by distributing force across multiple directions rather than concentrating it in one direction. This geometric parameter change transforms the compression stress into a more distributed load pattern that the active region can withstand
Data Source
AI summary
A display apparatus includes a display panel including a first substrate and a second substrate opposite to the first substrate, the first substrate including a switching element and a pixel electrode electrically connected to the switching element, and a display panel driver including a gate driver which outputs a gate signal to a gate line of the display panel, the gate line electrically connected to the switching element and extending in a first direction, and a data driver which outputs a data signal to a data line of the display panel and including data driving chips, the data line electrically connected to the switching element and extending in a second direction crossing the first direction, where each of the data driving chips includes a chip body, and a stress reliever extending from the chip body in a direction having an acute angle to the first and second directions.