Micro Pixel Package Display Architecture for Thin Flexible Panels
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Solution Overview
Problem
Current display technologies, such as LCDs, are structurally complex and limited in thinness due to the need for backlight units and liquid crystal layers, whereas self-luminous displays like micro LED displays offer better contrast, efficiency, and design flexibility but require encapsulation for organic materials, which are less durable.
Innovation Solution
A display module featuring a thin-film transistor circuit to drive inorganic light emitting devices arranged in separate chips, facilitating circuit inspection and replacement, and a manufacturing process that integrates micro pixel packages with inorganic light emitting devices on a glass substrate, allowing for flexible and durable displays without the need for additional encapsulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If LCD technology is used, then light emission is achieved through backlight unit and liquid crystal layer, but structural complexity increases and thinness is limited
Solution Approach 1:
The patent extracts and removes the backlight unit and liquid crystal layer from the display structure, replacing them with self-luminous micro LED elements. This extraction eliminates the complex light transmission path and associated components, directly reducing structural complexity and enabling thinner display modules.
Solution Approach 2:
The patent replaces the mechanical optical system (backlight unit, liquid crystal layer, color filters) with a self-luminous semiconductor-based system. Micro LEDs generate light directly through electroluminescence, substituting the complex mechanical light transmission and modulation system with a simpler electronic light emission mechanism.
2Reliability
If organic LED materials are used, then light emission is achieved, but encapsulation is required which reduces durability
Solution Approach 1:
The patent changes the material parameter from organic compounds to inorganic semiconductor materials. Inorganic LEDs inherently possess superior chemical stability and resistance to environmental degradation, eliminating the need for protective encapsulation layers and directly improving durability and reliability.
3Ease of repair
If inorganic light emitting devices are integrated directly into the display panel, then manufacturing complexity increases, but circuit inspection and replacement become difficult
Solution Approach 1:
The patent segments the display into modular micro pixel packages, each containing a specific array of inorganic LEDs and associated control circuits. This segmentation allows individual modules to be independently inspected, tested, and replaced without affecting the entire display, significantly improving ease of repair while maintaining manageable integration complexity through standardized interfaces.
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 enables the creation of thin, flexible, and high-resolution self-luminous displays with improved durability and efficiency, capable of producing high-brightness images with better contrast and viewing angles, while eliminating the need for complex backlight units and liquid crystal layers.
Implementation Method 1
a plurality of inorganic light emitting devices provided on an upper surface of the second substrate
Implementation Method 2
Each of the plurality of micro pixel packages may be electrically connected to the first substrate by at least one solder ball
Data Source
AI summary
A display module, including a plurality of pixels, includes: a first substrate; a plurality of micro pixel packages provided on an upper surface of the first substrate; and a driver integrated circuit (IC) configured to transmit a driving signal to the plurality of micro pixel packages. Each of the plurality of micro pixel packages includes a second substrate; a plurality of inorganic light emitting devices provided on an upper surface of the second substrate; and a micro pixel controller provided on a lower surface of the second substrate, the micro pixel controller being configured to control the plurality of inorganic light emitting devices.