Micro LED Module Cover Structure for ESD Protection and Rigidity
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Solution Overview
Problem
Current display technologies, such as liquid crystal panels and OLED panels, face issues like slow response time, high power consumption, and vulnerability to burn-in, while micro LED panels using inorganic light-emitting devices on substrates offer improved brightness, resolution, and durability but require enhanced reliability against Electrostatic Discharge (ESD) and rigidity.
Innovation Solution
A display module design featuring a substrate with mounted inorganic light-emitting devices, a metal cover for ESD protection, and a side member for rigidity, along with a front cover and anisotropic conductive layers for electrical connectivity, ensuring reliable operation and assembly in a matrix form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If micro LED display modules are designed with extended coverage areas to reduce visibility of seams between modules, then the aesthetic quality and continuity of the display improve, but the structural rigidity and ESD protection capability are compromised
Solution Approach 1:
The protective structure is divided into three separate components: front cover, metal cover, and side member. Each component can be optimized independently for its specific function while collectively providing comprehensive protection. The front cover protects the mounting surface, the metal cover protects the rear surface and provides ESD protection, and the side member connects them to ensure structural rigidity.
Solution Approach 2:
The display module employs a composite protective structure combining different materials with complementary properties. The front cover uses materials optimized for optical clarity and front surface protection, while the metal cover uses conductive materials for ESD protection and rear surface durability. The side member uses rigid materials to connect the components and provide structural support.
2Ease of manufacture
If the display module uses a simple cover structure, then the manufacturing complexity is reduced, but the reliability against ESD and external forces is insufficient
Solution Approach 1:
The protective structure is divided into three separate components: front cover, metal cover, and side member. Each component can be optimized independently for its specific function while collectively providing comprehensive protection. The front cover protects the mounting surface, the metal cover protects the rear surface and provides ESD protection, and the side member connects them to ensure structural rigidity.
Solution Approach 2:
The metal cover serves multiple functions simultaneously: it protects the rear surface from external forces, provides ESD protection through its conductive material, and contributes to the overall structural rigidity when connected with the side member. This multi-functionality reduces the need for additional separate components.
3Duration of action of stationary object
If the display device uses inorganic light-emitting devices for high brightness and durability, then the lifespan and light-emitting efficiency improve, but the vulnerability to ESD increases
Solution Approach 1:
The metal cover is positioned to cover the rear surface of the substrate before ESD events can occur, providing preemptive protection. The conductive material in the metal cover is specifically designed to dissipate electrostatic charges before they can reach and damage the mounted inorganic light-emitting devices.
Solution Approach 2:
The metal cover acts as an intermediary protective layer between external ESD sources and the inorganic light-emitting devices. It intercepts and dissipates electrostatic charges through its conductive properties, preventing direct contact with the sensitive electronic components on the substrate.
Data Source
AI summary
A display module includes a substrate including a mounting surface on which a plurality of inorganic light-emitting devices are mounted, a side surface, and a rear surface opposite to the mounting surface; a front cover covering the mounting surface and extending to an outer area from the mounting surface; a metal cover covering the rear surface and a first area of the side surface, the first area extending from the rear surface; and a side member positioned below the outer area from the mounting surface and adhered to a second area of the side surface, the second area extending from the mounting surface, and at least a portion of the metal cover. The metal cover includes a rear portion covering the rear surface, a side portion covering the first area of the side surface, and a bent portion bent between the rear portion and the side portion.