Display Panel Light Source Integration for Thin Devices
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Solution Overview
Problem
Conventional liquid crystal display devices require a separate light source and circuit board, leading to complex assembly processes and increased thickness due to the need for external light sources and signal connections.
Innovation Solution
A display device design where the light source is directly attached to the display panel with a light guide, eliminating the need for a separate circuit board by using a connection film and wiring members to connect the light source driver, and incorporating a light source pad for signal transmission, thereby simplifying assembly and reducing thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a separate light source and circuit board are used, then the light source can be independently mounted and connected, but the assembly process becomes complicated and the device thickness increases
Solution Approach 1:
The patent merges the light source mounting function directly onto the display panel substrate, eliminating the need for a separate circuit board. The light source is positioned on the substrate at a location that does not overlap with the display area, integrating multiple functions (lighting and signaling) into a single structural platform, thereby simplifying assembly and reducing overall device complexity
Solution Approach 2:
The display panel substrate serves multiple functions: it acts as both the display carrier and the mounting platform for the light source. The same substrate that supports the display area also provides mechanical support and electrical connection pathways for the light source, reducing the need for separate structural components
2Reliability
If a separate circuit board is used for light source connection, then electrical connections can be established, but the device thickness increases
Solution Approach 1:
The patent extracts the light source mounting function from the separate circuit board and relocates it directly to the display panel substrate. This extraction eliminates the need for additional thickness to accommodate a separate board, while connection reliability is maintained through direct mounting structures and conductive pathways integrated into the substrate
Solution Approach 2:
The light source is positioned on the substrate in a dimension that does not interfere with the display area, utilizing unused space on the substrate surface. This spatial arrangement allows electrical connections to be established through the substrate without adding significant thickness, as connections can be made through conductive layers already present in the substrate structure
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
This design simplifies the assembly process and minimizes the thickness of the display device by integrating the light source directly onto the panel, reducing the complexity of the assembly and enhancing the structural integrity.
Implementation Method 1
a light source (500) attached to a display panel (100)
Data Source
AI summary
A display device includes a display panel. The display device further includes a light source attached to a surface of the display panel. The display device further includes a light guide overlapping the display panel.