Display Apparatus Column Inversion Driving Circuit
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Solution Overview
Problem
Existing display apparatuses using dot inversion driving methods improve display quality but increase power consumption, necessitating a solution that enhances quality while reducing power usage.
Innovation Solution
A display apparatus with alternating data line groups and selectors that apply data signals with different polarities to odd and even data lines, implementing a column-inversion driving method to reduce flicker and power consumption, while maintaining image quality through dot-inversion schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If dot inversion driving method is used, then display quality is improved, but power consumption increases
Solution Approach 1:
The data lines are divided into multiple groups (first data line group, second data line group, etc.) with different polarity arrangements. Each group can be controlled independently by selectors, allowing selective application of dot inversion to specific regions rather than the entire display, thereby reducing overall power consumption while maintaining display quality in critical areas.
Solution Approach 2:
Different polarity inversion schemes are applied to different data line groups based on their positions and requirements. The first data line group uses one polarity pattern while the second data line group uses an alternating pattern, optimizing power consumption locally in each region while maintaining overall display quality.
2Use of energy by moving object
If column inversion driving method is used, then power consumption is reduced, but display quality may be compromised
Solution Approach 1:
The patent merges the advantages of both column inversion and dot inversion methods. Column inversion is applied at the data line group level to reduce power consumption, while dot inversion is selectively applied within groups to maintain display quality. This hybrid approach combines both strategies to achieve both power efficiency and image quality.
Data Source
AI summary
A display apparatus includes a first pixel, a second pixel, a first selector, and a second selector. The first pixel includes first sub-pixels connected to a first gate line and respectively connected to corresponding data lines included in a first data line group and the second pixel includes second sub-pixels connected to a second gate line adjacent to the first gate line and respectively connected to corresponding data lines, one of which is included in a second data line group different from the first data line group. The first selector applies first data signals to one of odd-numbered data lines, and the second selector applies second data signals having a different polarity from the second data signals to one of even-numbered data lines.