Display Device ESD Protection via Merged Bracket and Conductive Gasket
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display devices are vulnerable to damage from electrostatic discharge, leading to product failure, and existing solutions complicate the structure, increasing weight, thickness, cost, and assembly complexity.
Innovation Solution
A display device with a simple structure that includes a cover bottom housing a liquid crystal panel and backlight unit, a circuit board, a conductive film connecting the panel and board, a foam gasket assembly with conductive fabric and metal members to dissipate static electricity, and a bracket to cover the circuit board, using a conductive adhesive layer and materials like nickel, copper, gold, and anti-tarnish urethane-coated polyester fabric for protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate electrostatic discharge circuit is provided to prevent damage from electrostatic discharge, then the reliability of the display device is improved, but the device complexity increases
Solution Approach 1:
The patent merges the electrostatic discharge protection function with the existing bracket structure. The bracket is designed to be in direct contact with the liquid crystal panel, eliminating the need for separate ESD circuits or components. This integration maintains reliability while simplifying the overall device structure.
Solution Approach 2:
The bracket serves multiple functions: it provides mechanical support for the liquid crystal panel, enables electrostatic discharge protection through direct contact, and facilitates heat dissipation. This multi-functionality reduces the need for additional components and simplifies the device structure.
2Reliability
If a separate electrostatic discharge circuit is provided, then the reliability is improved, but the weight increases
Solution Approach 1:
The ESD protection function is combined with the existing bracket structure, eliminating the need for additional heavy components. The bracket itself serves as the ESD protection mechanism through direct contact with the liquid crystal panel, thereby preventing weight increase.
3Reliability
If a separate electrostatic discharge circuit is provided, then the reliability is improved, but the thickness increases
Solution Approach 1:
The ESD protection function is integrated into the bracket structure, which is already part of the device assembly. This eliminates the need for additional layers or components that would increase device thickness.
4Reliability
If a separate electrostatic discharge circuit is provided, then the reliability is improved, but the manufacturing cost increases
Solution Approach 1:
The ESD protection function is merged with the bracket structure, eliminating the need for separate ESD circuits and reducing component count. This simplification directly reduces manufacturing costs while maintaining reliability.
Solution Approach 2:
The bracket performs multiple functions including mechanical support, ESD protection, and heat dissipation. This multi-functionality reduces the total component count and assembly complexity, thereby lowering manufacturing costs.
5Reliability
If a separate electrostatic discharge circuit is provided, then the reliability is improved, but the assembly performance deteriorates
Solution Approach 1:
The ESD protection function is integrated into the bracket structure, eliminating the need for separate assembly steps for ESD components. This reduces assembly complexity and improves assembly performance.
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 damage from electrostatic discharge while simplifying the assembly process and improving assembly performance by energizing static electricity to the cover bottom, thus protecting the liquid crystal panel and driver IC from electrostatic discharge.
Implementation Method 1
When electrostatic electricity flows into the liquid crystal panel due to electrostatic discharge (ESD), pixels or driving chips constituting the liquid crystal panel can be fatally damaged
Implementation Method 2
a foam gasket assembly including a conductive fabric attached to a side surface of the cover bottom to cover the film and a conductive metal member having one side attached to the conductive fabric and the other side attached to the cover bottom
Data Source
AI summary
A display device is proposed, which includes a cover bottom in which a liquid crystal panel displaying an image and a backlight unit providing light to the liquid crystal panel are housed; a circuit board mounted on a rear surface of the cover bottom; a film electrically connecting the liquid crystal panel and the circuit board and having electronic component mounted thereon; a foam gasket assembly including a conductive fabric attached to a side surface of the cover bottom to cover the film and a conductive metal member having one side attached to the conductive fabric and the other side attached to the cover bottom; and a bracket coupled to a rear surface of the cover bottom to cover the circuit board, thereby allowing a simple structure while preventing damage to products due to static electricity.