Light Emitting Module Electrode Structure for Stable Display Bonding
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Solution Overview
Problem
Conventional display devices face issues with light emitting elements not being firmly and reliably connected to the display substrate, leading to irregular and smooth display of characters, symbols, images, or videos.
Innovation Solution
A light emitting module design featuring a module body with a base, electrodes, and molding that securely connects light emitting elements to the substrate, utilizing up-down and lower extension portions for stable electrical connections and a molding structure that enhances contact area and reduces thermal stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional connection methods are used for light emitting elements to display substrate, then device complexity is reduced, but connection reliability deteriorates
Solution Approach 1:
The electrode is divided into multiple segments: up-down extension portion, upper extension portion, and lower extension portion. Each segment serves a specific function in establishing reliable electrical connection while distributing mechanical stress, thereby improving connection reliability without requiring complex external connection structures.
Solution Approach 2:
The electrode transitions from a simple planar structure to a three-dimensional structure with vertical (up-down) and horizontal (upper-lower extension) components. This dimensional change allows the electrode to bridge the gap between light emitting elements and display substrate more effectively, enhancing connection reliability.
2Reliability
If simple electrode structure is used, then manufacturing is easier, but electrical connection stability deteriorates
Solution Approach 1:
The electrode structure is pre-configured with up-down and upper-lower extension portions during the manufacturing process. This preliminary structuring ensures that when light emitting elements are mounted, stable electrical connections are automatically established without requiring additional complex assembly steps.
Solution Approach 2:
Different portions of the electrode have different geometries optimized for their specific functions: the up-down extension portion provides vertical connection, the upper extension portion connects to light emitting elements, and the lower extension portion connects to the substrate. This localized optimization achieves stable electrical connection while maintaining manufacturing feasibility.
3Reliability
If light emitting elements are loosely connected to substrate, then assembly is easier, but display smoothness deteriorates
Solution Approach 1:
The molding structure is segmented to cover and secure light emitting elements while allowing for thermal expansion. The molding encapsulates the electrode and light emitting elements, providing firm connection without requiring complex assembly operations.
Solution Approach 2:
The molding material and its curing parameters are optimized to provide appropriate adhesion strength. By controlling the molding process parameters, the system achieves firm connection of light emitting elements to the substrate while maintaining assembly simplicity.
Data Source
AI summary
The present disclosure relates to a light emitting module and a display device including the same. In particular, there is provided a light emitting module, including: a module body including a base having an upper surface, a lower surface, and a plurality of peripheral surfaces connected to the upper surface and the lower surface; a plurality of electrodes disposed to be exposed to an outside on at least a part of the plurality of peripheral surfaces of the base; a plurality of light emitting elements disposed on the base to be connected to two or more of the plurality of electrodes; and a molding covering the plurality of light emitting elements.