Source Drive IC Gamma Voltage Distribution via Resistance Correctors
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Solution Overview
Problem
Resistance deviations between lines in source drive ICs lead to signal delay and distortion, degrading image quality in display apparatuses.
Innovation Solution
A source drive IC design incorporating a core portion, channel portions, resistor strings, and resistance correctors to generate and distribute gamma voltages, with connection lines extending through correctors to equalize resistance, reducing signal delay and distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If connection lines are extended to channel portions, then resistance deviation between lines increases, but signal transmission capability is improved
Solution Approach 1:
The patent introduces resistance correctors at specific locations where connection lines extend to channel portions. These correctors locally adjust the resistance characteristics of individual lines based on their specific length and resistance requirements, rather than attempting to uniformize all lines globally. This localized adjustment compensates for the resistance deviations caused by varying line lengths while maintaining effective signal transmission to each channel portion.
2Reliability
If resistance correctors are added to equalize resistance, then resistance uniformity is improved, but device complexity increases
Solution Approach 1:
Resistance correctors are selectively placed only at connection lines that require resistance adjustment, rather than adding correction mechanisms to all lines. This localized approach achieves resistance uniformity where needed while minimizing the overall increase in device complexity.
Solution Approach 2:
The resistance correctors act as intermediary components between the connection lines and channel portions. These correctors mediate the resistance mismatch by providing adjustable resistance elements that can be tuned to match the specific requirements of each connection line, thereby simplifying the overall design compared to completely redesigning the connection architecture.
Data Source
AI summary
Disclosed are a source drive integrated circuit (IC), a method of manufacturing the same, and a display apparatus including the source drive IC. The source drive IC includes a core portion, a first channel portion disposed outside one side of the core portion, a second channel portion disposed outside the other side of the core portion, a first resistor string provided inward from the one side of the core portion to generate a plurality of gamma voltages, a first resistance corrector provided between the first resistor string and the first channel portion, and a first connection line extending from the first resistor string to each of the first channel portion and the second channel portion and transferring the plurality of gamma voltages to the first channel portion and the second channel portion. The first connection line extends to the first channel portion via the first resistance corrector.