LED Display Packaging with Plastic Insulation for Compact Control
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Solution Overview
Problem
Conventional display devices, such as LCDs and OLEDs, face challenges in achieving desired brightness and color temperature control, requiring stringent selection of LEDs and having large footprints, while also lacking individual control of light-emitting units.
Innovation Solution
A display device comprising an optical module with multiple light-emitting units and a driver IC, where each light-emitting unit consists of three LEDs with different colors, and the driver IC includes driving chips that can independently control the LEDs' brightness and color temperature through a bonding process using plastic layers and conductive materials to achieve electrical isolation and connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LCD modules with backlight modules are used to achieve desired brightness and color temperature, then display quality is improved, but device footprint and structural complexity increase
Solution Approach 1:
The display device is segmented into multiple independently controllable light-emitting units, each containing multiple LEDs. This segmentation allows for localized control of brightness and color temperature without requiring a large-scale backlight module, thereby reducing overall device footprint while maintaining display quality.
Solution Approach 2:
The patent implements dynamic control of LED brightness and color temperature through driving chips that can individually adjust each light-emitting unit. This dynamic capability replaces the static backlight module approach, enabling precise color temperature control without increasing structural complexity or footprint.
2Area of stationary object
If OLED display modules are used to eliminate backlight modules, then device footprint is reduced, but technology maturity and service lifetime are compromised
Solution Approach 1:
The patent employs conventional LEDs with long service lifetimes and mature technology instead of emerging OLED technology. By using multiple independently controllable LED units rather than a single large OLED module, the system achieves compact footprint while relying on proven, reliable components with extended service life.
3Ease of operation
If driving chips control light-emitting units, then individual control capability is achieved, but control precision and electrical connection reliability become critical challenges
Solution Approach 1:
The patent introduces a plastic layer as an intermediary between the driving chips and light-emitting units. This plastic layer integrates electrical connection functions and mechanical positioning features, simplifying the bonding process and reducing the precision requirements for direct electrical connections while maintaining reliable individual control of each light-emitting unit.
Data Source
AI summary
A display device and a method for packaging the display device are disclosed. The display device includes an optical module including multiple light-emitting units disposed apart from one another and a first plastic layer. Each light-emitting unit includes at least three LEDs, and the first plastic layer fills the gaps between the light-emitting units. The display device further includes a driver IC including a second plastic layer, driving chips, through-holes, a first structure and a second structure. The second plastic layer fills the gaps between the driving chips, and the second plastic layer has a third layer. The through-holes penetrate through the second plastic layer along a thickness direction of the through-holes and are filled with a conductive material. The first structure is electrically connected to the driving chips and to the conductive material in the through-holes. The second structure is electrically connected to the conductive material in the through-holes.