Light Emitting Module Layout Using an Intermediate Substrate
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Solution Overview
Problem
There is no effective technical solution to arrange terminals for leading wires from small-sized light emitting devices and control them accordingly.
Innovation Solution
A light emitting module comprising a light emitting structure, an intermediate substrate, and an Integrated Circuit (IC) with IC output terminals, where the intermediate substrate is electrically connected between the light emitting structure and the IC to transmit driving inputs to the light emitting units, enabling control of the light emitting units even when the devices are very small.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If light emitting devices are made very small to improve display resolution, then display quality is improved, but it becomes impossible to arrange terminals for leading wires and control the devices
Solution Approach 1:
An intermediate substrate is introduced as a mediator between the IC and the light emitting devices. This substrate provides a platform for arranging input terminals that receive control signals, which are then transmitted to the light emitting devices. The intermediary substrate resolves the contradiction by providing a spatial buffer that allows terminal arrangement even when the light emitting devices themselves are extremely small.
Solution Approach 2:
The patent transitions from a two-dimensional planar arrangement to a three-dimensional stacked structure. The IC, intermediate substrate, and light emitting devices are arranged in vertical layers rather than spreading out horizontally. This dimensional change allows terminals to be arranged on the intermediate substrate layer, enabling control functionality even when the overall device footprint is minimized.
2Volume of moving object
If the size of light emitting devices is reduced, then the overall device size is reduced, but the ability to arrange control terminals and lead wires is lost
Solution Approach 1:
The patent implements a nested structure where the IC is positioned beneath the intermediate substrate, which in turn is positioned beneath the light emitting devices. The input terminals are nested on the intermediate substrate layer, creating a compact vertical arrangement. This nesting allows all control functionality to be contained within a small volume without requiring horizontal expansion.
Solution Approach 2:
The control system is segmented into distinct functional layers: the IC layer for signal processing, the intermediate substrate layer for terminal arrangement and signal distribution, and the light emitting device layer for light output. This segmentation allows each layer to be optimized independently, with the intermediate substrate specifically designed to accommodate terminal arrangement even when overall device size is reduced.
3Ease of manufacture
If terminals are arranged on the same substrate as light emitting devices, then connection is simplified, but no space remains for terminal arrangement when devices are very small
Solution Approach 1:
The intermediate substrate serves as a mediator that separates the light emitting devices from the input terminals while maintaining electrical connection. This intermediary layer provides dedicated space for terminal arrangement without interfering with the light emitting devices, resolving the space constraint while preserving connection functionality.
Solution Approach 2:
Instead of arranging terminals in the same two-dimensional plane as the light emitting devices, the patent moves terminal arrangement to a different vertical layer (the intermediate substrate). This dimensional separation provides available space for terminals even when the horizontal area is minimized, while maintaining simplified electrical connections through vertical vias and conductors.
Data Source
AI summary
Provided is a light emitting module, including: a light emitting structure, an intermediate substrate, an IC and an IC input structure; where, the IC input structure is configured to transmit an IC driving input for driving the IC to the IC; a plurality of IC output terminals included in the IC are configured to transmit light emitting unit driving inputs for driving the light emitting structure to the light emitting structure; the intermediate substrate is electrically connected between the light emitting structure and the IC, and is configured to transmit light emitting unit driving inputs from the IC to the light emitting structure; and the light emitting structure is configured to receive the light emitting unit driving inputs by a plurality of light emitting unit input terminals. Also provided is a display device.