Bendable TCP Panel Module for LCD Backlight Disassembly
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Solution Overview
Problem
The high cost and limited design flexibility of dedicated panel modules for specific types of LCD devices, as well as the difficulty in testing driver IC functions during backlight unit disassembly in conventional LCD devices.
Innovation Solution
A panel module design featuring bendable tape carrier packages (TCPs) and inter-substrate flexible wires connecting signal and scanning line driver substrates, allowing the substrates to be positioned on either side of the LCD panel, enabling compatibility with stacked, L-shaped, or U-shaped circuit board structures and facilitating product testing by allowing disassembly of the backlight unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated panel modules are manufactured for specific types of LCD devices, then the LCD device can be assembled with compatible circuit boards, but the manufacturing cost increases and design flexibility is limited
Solution Approach 1:
The patent creates a universal panel module design that can be adapted to multiple LCD device types (stacked, L-shaped, U-shaped structures) through standardized interface configurations. The circuit boards are designed with universal mounting patterns and connection interfaces that can accommodate different device architectures, eliminating the need for dedicated module manufacturing for each device type while maintaining full compatibility.
Solution Approach 2:
The patent employs flexible circuit board designs that can be bent and positioned in different configurations to accommodate various LCD device structures. The circuit boards include bendable sections and adjustable positioning features that allow the same panel module to be dynamically adapted to stacked, L-shaped, or U-shaped device architectures without requiring dedicated manufacturing for each type.
2Reliability
If circuit boards are fixed in position on the LCD panel, then electrical connections are stable, but the backlight unit cannot be disassembled for product testing
Solution Approach 1:
The patent divides the circuit board assembly into separable sections with modular connection interfaces. The circuit boards are designed with detachable connection points that allow the backlight unit to be disassembled for testing while maintaining stable electrical connections during normal operation. The segmentation enables independent access to the backlight unit without compromising the integrity of the driver IC connections.
Solution Approach 2:
The patent introduces flexible connection interfaces and intermediary connection elements between the circuit boards and driver ICs that allow temporary disconnection during testing. These intermediary connections maintain electrical stability during normal operation but can be easily disconnected to allow backlight unit removal for product testing, then reconnected to restore full functionality.
3Manufacturing precision
If multiple types of panel modules are manufactured for different LCD device types, then each device type can be optimized, but the design flexibility and manufacturing efficiency decrease
Solution Approach 1:
The patent develops a universal panel module platform that can serve multiple LCD device types through standardized interface designs and configurable circuit board layouts. The same basic module design can be optimized for stacked, L-shaped, or U-shaped device architectures by adjusting connection positions and board orientations, eliminating the need to manufacture entirely different module types for each device configuration and significantly improving manufacturing efficiency.
Data Source
AI summary
A panel module for an LCD device has an LCD panel including a TFT panel and a counter panel, signal line and scanning line drive boards for connecting to external circuits, and TCPs connecting together the TFT panel and the drive boards. The signal line driver TCP has a plurality of slits in the film substrate thereof and bent at the slits, allow the signal line drive board to be located on the rear side of the backlight unit of the LCD device. The panel module is suited any of stacked, L-shaped or U-shaped board structure.