LED Assembly Linear Light Source for Narrow Bezel LCD

The patent transitions from mounting LEDs on a planar printed circuit board to directly mounting LED chips on the light guide plate surface. This dimensional change allows LEDs to be positioned at the edge of the display area, converting the light mixing approach from requiring lateral spacing to utilizing the light guide plate's optical properties for uniform distribution, thereby minimizing bezel width while maintaining uniform light emission.

The patent extracts the LED mounting function from the printed circuit board and integrates it directly onto the light guide plate. This separation eliminates the need for a dedicated PCB structure with spaced LED mounts, allowing the lighting function to be combined with the optical guiding function in a single integrated component, thus reducing overall device thickness and bezel requirements.

The patent merges the LED chip mounting and electrical connection functions into a single integrated structure on the light guide plate. By eliminating the separate printed circuit board and its associated electrode leads and solder joints, the design reduces the number of assembly steps and potential failure points while maintaining reliable electrical connections through direct bonding of LED chips to the light guide plate's conductive structures.

The light guide plate itself serves dual functions: as the optical element that guides and distributes light, and as the mounting substrate that provides both mechanical support and electrical connection pathways for the LED chips. This self-service approach eliminates the need for separate dedicated components for each function, simplifying manufacturing while ensuring reliable electrical connections.