Chip on Film Unit with Segmented Drive Circuit Modules
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Solution Overview
Problem
The existing chip on film units in liquid crystal displays face challenges with heat dissipation and cooling due to the concentration of all signal channels in a single drive circuit module, making it difficult to protect and maintain the chip.
Innovation Solution
The improved chip on film unit features two drive circuit modules with cascade wires between them, distributing signal channels and improving thermal efficiency, while reducing the number of pins and ensuring uniform temperature across the unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If all signal channels are concentrated in a single drive circuit module, then the device complexity is reduced, but the heat dissipation performance deteriorates
Solution Approach 1:
The patent divides the drive circuit into multiple drive circuit modules (first drive circuit module, second drive circuit module, etc.), each handling a portion of the signal channels. This segmentation distributes the heat-generating components across multiple modules, improving heat dissipation while maintaining manageable device complexity through modular architecture.
2Temperature
If multiple drive circuit modules are used to improve heat dissipation, then the temperature distribution improves, but the device complexity increases
Solution Approach 1:
The drive circuit is segmented into multiple modules with clearly defined functions. Each module handles specific signal channels, and the segmentation is implemented in a systematic way that manages complexity through modularity and standardized interconnections.
Solution Approach 2:
Multiple drive circuit modules are designed with similar structures and functions, allowing them to be interconnected in a standardized manner. This universality reduces the overall complexity by using repeated, standardized building blocks rather than entirely unique components for each module.
3Loss of energy
If signal channels are distributed across multiple drive circuit modules, then the thermal efficiency is improved, but the number of cascade wires increases
Solution Approach 1:
Signal channels are segmented and assigned to different drive circuit modules, with cascade wires connecting corresponding modules. This segmentation approach improves thermal efficiency by distributing signal processing across multiple modules while managing the number of cascade wires through systematic assignment.
Data Source
AI summary
In the technical field of liquid crystal technology, a chip on film unit is provided. The chip on film unit comprises a soft dielectric layer, a plurality of pins for input signals disposed on the dielectric layer, and a first drive circuit module and a second drive circuit module. The first drive circuit module is connected with at least a portion of the pins for the input signals, and cascade wires are disposed between the first drive circuit module and the second drive circuit module for transmitting cascade signals therebetween. The number of signal channels in each of the drive circuit modules can be half of that required by the entire chip on film. As a result, the signal channels are distributed in a plurality of drive circuit modules, and the thermal efficiency can be significantly improved.