Double-Surface Micro LED Panel Layout for Thin Flat Displays
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Solution Overview
Problem
Conventional double-surface display panels have a relatively great thickness and poor flatness, which is a challenge in the development of thin and flat display technologies like LCDs and micro LED displays.
Innovation Solution
A double-surface display panel design featuring micro LED units with opposite light-emitting directions on the same substrate, along with a pixel driving circuit layer and light-shielding layers, to reduce thickness and enhance flatness, with the micro LED units and their respective driving circuits disposed on the same layer to minimize overlap and prevent optical interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If LCD modules are used for double-surface displays, then display function is achieved, but module thickness increases due to backlight module
Solution Approach 1:
The patent extracts and removes the backlight module from the display structure, replacing it with self-luminescent micro LED units that generate their own light. This elimination of the backlight module directly reduces the overall module thickness while maintaining the double-surface display function.
Solution Approach 2:
The patent substitutes the passive optical system (backlight module) with an active self-luminescent system (micro LED units). This replacement transitions from a mechanical/optical assembly requiring thick housing to a compact electronic display solution.
2Illumination intensity
If micro LED display modules are used, then self-luminescence is achieved, but thickness increases due to PCB substrate and components
Solution Approach 1:
The patent merges the micro LED light-emitting units directly onto the substrate without requiring a separate PCB substrate and associated components. This integration combines the display function and substrate function into a single thin layer, eliminating the need for thick PCB structures while maintaining self-luminescence.
Solution Approach 2:
The patent employs a thin substrate structure that replaces the rigid, thick PCB substrate. This thin film approach allows the micro LED units to be mounted on a much thinner base, reducing overall module thickness while maintaining structural integrity.
3Length of stationary object
If OLED display modules are used, then thickness is reduced compared to LCD and micro LED, but manufacturing processes become difficult and glass flatness requirements are extremely high
Solution Approach 1:
The patent uses conventional, well-established substrate materials and manufacturing processes similar to traditional LCD and micro LED fabrication, rather than requiring specialized OLED glass substrates. This approach uses more forgiving, easier-to-manufacture materials that don't require extremely high flatness tolerances.
Solution Approach 2:
The patent changes the material parameters and structural specifications of the substrate to be more compatible with existing manufacturing capabilities. By adjusting substrate thickness, material selection, and flatness requirements to more practical values, the manufacturing process becomes significantly easier while still achieving thin module dimensions.
4Ease of operation
If micro LED units are disposed on both sides of substrate, then double-surface display is achieved, but optical interference may occur between opposite units
Solution Approach 1:
The patent introduces a light-shielding layer as an intermediary between the micro LED units on opposite sides of the substrate. This shielding layer blocks light from passing through the substrate from one side to the other, preventing optical interference while allowing both surfaces to function as independent display surfaces.
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 achieves a significantly reduced thickness of less than 1 mm for the double-surface display panel, enabling extremely thin and flat displays while maintaining high pixel density and resolution.
Implementation Method 1
a plurality of first micro light-emitting diode (micro LED) units distributed in an array manner, wherein the first micro LED units are disposed on the first side or the second side; and a plurality of second micro light-emitting diode (micro LED) units distributed in an array manner, wherein the second micro LED units are disposed on the first side or the second side, and a light-emitting direction of the second micro LED units is opposite to a light-emitting direction of the first micro LED units
Data Source
AI summary
A double-surface display panel and a double-surface spliced display screen are disclosed. The double-surface display panel comprises a substrate, a plurality of first micro light-emitting diode (LED) units, and a plurality of second LED unis. The first micro LED units and the second LED units are disposed on a same side or different sides of the substrate. A light-emitting direction of the second micro LED units and a light-emitting direction of the first micro LED units are opposite. The first micro LED units and the second micro LED units, which have different light-emitting directions, share the same substrate. Therefore, a thickness of an entire film of the double-surface display panel can be reduced.