Display Device Dedicated Color Data Lines
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Solution Overview
Problem
In PENTILE™ pixel structures, the alternating supply of red, green, and blue data signals to data lines leads to peak current increases and higher power consumption due to voltage level changes.
Innovation Solution
The implementation of a display device with a data driver that supplies data signals of only one color to each data line, and the introduction of a dummy data line and dummy source channel to prevent pixel defects in boundary areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data lines alternately supply red, green, and blue data signals with different voltage levels, then sub-pixels of different colors can be connected to the same data line, but peak current increases and power consumption increases
Solution Approach 1:
The patent segments the data lines into dedicated color-specific lines (red data lines, green data lines, blue data lines) rather than having single data lines serve multiple colors. This segmentation eliminates the need for voltage level switching on shared data lines, thereby reducing peak current and power consumption while maintaining the ability to drive all sub-pixels.
Solution Approach 2:
Instead of having one data line serve multiple colors by switching voltage levels (conventional approach), the patent inverts the approach by having multiple dedicated data lines (one per color) that remain at stable voltage levels. This inversion resolves the power consumption issue while achieving the same functional goal.
2Use of energy by moving object
If only sub-pixels of one color are connected to one data line, then power consumption is reduced, but pixel defects occur in boundary areas of pixel units
Solution Approach 1:
The patent introduces dummy data lines as intermediary elements in boundary areas of pixel units. These dummy data lines receive dummy data signals that prevent pixel defects without requiring changes to the main data signaling. This intermediary approach maintains the power-efficient dedicated color-line architecture while solving the boundary pixel reliability issue.
Solution Approach 2:
The patent applies preliminary action by providing dummy data signals to dummy data lines in advance, before actual display operation, to prevent pixel defects in boundary areas. This preventive measure ensures reliable pixel operation without affecting the power consumption benefits of the dedicated data line architecture.
3Use of energy by moving object
If dedicated data lines for each color are used, then power consumption is reduced by minimizing peak current, but device complexity increases due to additional data lines and source channels
Solution Approach 1:
The patent segments the data signaling into dedicated color-specific channels, which organizes the complexity into manageable, functionally distinct units. While this increases the total number of data lines compared to shared lines, it simplifies the signaling logic and eliminates the need for complex voltage switching control, thereby managing device complexity in a different way.
Solution Approach 2:
The patent applies local quality by introducing dummy data lines and dummy source channels only in boundary areas of pixel units where needed, rather than throughout the entire display. This localized approach minimizes the increase in device complexity while still preventing pixel defects in critical boundary regions.
Data Source
AI summary
A display device includes: a data driver for supplying a data signal to each of a plurality of data lines; and a pixel unit including a plurality of sub-pixels. The pixel unit further includes one dummy data line disposed separate from a data line of a first column among the data lines. The data line of the first column is connected to sub-pixels disposed on odd-numbered pixel rows among sub-pixels disposed on a first pixel column, and is connected to sub-pixels disposed on even-numbered pixel rows among sub-pixels disposed on a third pixel column. The dummy data line is connected to sub-pixels disposed on the even-numbered pixel rows among the sub-pixels disposed on the first pixel column.