Driver IC Pad Layout for High-Resolution Foldable Displays
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Solution Overview
Problem
Current bonding techniques for single foldable ICs in high-resolution foldable products are difficult, limiting yield and increasing cost, necessitating a solution to support high resolution while ensuring both yield and cost efficiency.
Innovation Solution
A driver IC design with reduced GOA pad areas and optimized pad group layout, allowing for increased data signal pads by reducing the number of first pads and repurposing dummy pads for signal transmission, thereby increasing the resolution without additional cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If two cascaded driver ICs are used to support high-resolution foldable products, then resolution is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple driver functions (data signal driving and gate signal driving) into a single integrated driver IC. The chip integrates data signal input interfaces, data signal processing circuits, gate signal output interfaces, and GOA pad areas all in one device, eliminating the need for multiple cascaded ICs while maintaining high-resolution display capabilities
Solution Approach 2:
The driver IC performs multiple functions simultaneously: it processes data signals for display output, generates gate scan signals, provides initialization signals, and interfaces with GOA circuits. This multi-functional integration allows one IC to replace what would traditionally require multiple separate components
2Adaptability or versatility
If GOA pad area is increased to support more gate signals, then gate driving capability is improved, but area occupied on the chip increases
Solution Approach 1:
The GOA pad area is divided into multiple independently controllable pad groups. Each pad group can be independently activated or deactivated based on the specific display panel requirements, allowing flexible configuration of gate signal output capabilities without permanently occupying the entire pad area
Solution Approach 2:
Different regions of the driver IC are optimized for different functions: data signal processing areas, gate signal output areas, initialization signal areas, and GOA pad areas. Each region has specialized circuitry and layout optimized for its specific function, improving overall efficiency while reducing total area requirements
Data Source
AI summary
The display device includes a display panel and the driver IC, the driver IC includes a data signal pad area and at least one GOA pad area; each of the at least one GOA pad area includes the first pads, and the first pads in each of the first pad groups are electrically connected with each other; and the driver IC further includes: a plurality of leads, where each of the first pad groups is electrically connected with a different lead; the display panel further includes a data line, where the data line is configured to receive a data signal transmitted from a data signal pad in the data signal pad area; where the peripheral area includes a GOA circuit, and the GOA circuit is configured to receive a signal transmitted from the first pad group in the GOA pad area.