Output Control Module for Driver Chips Mitigating Split Screens
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Solution Overview
Problem
The issue of split screens in display devices is caused by charging differences between adjacent data driver chips, particularly in tri-gate and DLS structures where the load driven by source driver chips is larger than in 1G1D structures.
Innovation Solution
A driver device comprising a first data driver chip, a second data driver chip, and a first output control module, where the first output control module connects and conducts the output ends of adjacent data transmission paths in the two driver chips when their input voltages are the same, ensuring equal output voltages and mitigating charging differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the number of source driver chips is reduced in DLS or tri-gate structures, then the device complexity is reduced, but the load driven by each source driver chip increases, causing insufficient charging and split screens
Solution Approach 1:
An output control module is introduced as an intermediary component between adjacent data transmission paths. This module includes detection units that monitor voltage differences and control units that adjust output signals, thereby mediating the charging process to ensure uniformity across different pixel regions without requiring additional driver chips
Solution Approach 2:
The output control module implements localized voltage adjustment by detecting voltage differences in specific regions and applying compensatory control signals only where needed. This allows different parts of the display to have different control characteristics, with the output control module providing additional drive strength in regions that would otherwise be under-driven
2Device complexity
If the load driven by source driver chips increases in DLS or tri-gate structures, then the device complexity is reduced, but the charging capability becomes insufficient, resulting in split screens
Solution Approach 1:
The output control module merges multiple data transmission paths together by detecting voltage differences between adjacent paths and controlling the output signals to ensure they reach the same voltage level. This combining approach allows the system to handle higher loads effectively without increasing the number of driver chips
Solution Approach 2:
The detection unit continuously monitors the voltage levels of adjacent data transmission paths and provides feedback to the control unit. Based on this feedback, the control unit dynamically adjusts the output signals to maintain uniform charging across all pixel regions, ensuring adequate charging capability even with reduced driver chip count
Data Source
AI summary
A driver device includes a first data driver chip, a second data driver chip, and a first output control module. The first data driver chip includes a plurality of first data transmission paths. The second data driver chip is disposed adjacent to the first data driver chip. The second data driver chip includes a plurality of second data transmission paths. The first output control module is connected with the m-th first data transmission path and the n-th second data transmission path. The first output control module is configured to conduct an output end of the m-th first data transmission path with an output end of the n-th second data transmission path when an input voltage of the m-th first data transmission path is same as an input voltage of the n-th second data transmission path, where m and n are positive integers.