Display Substrate Shift Circuits for Pure-Color Power Reduction
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Solution Overview
Problem
Current dual-gate LCD devices experience high power consumption when displaying pure-color pictures due to the continuous reversal of data line potentials during scanning.
Innovation Solution
A display substrate design where each shift circuit is connected to one turn-on signal terminal and provides gate driving signals to multiple gate lines, ensuring pixels sharing the same data line are of the same color, allowing continuous data signal provision without frequent potential reversals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dual-gate LCD devices use continuous scanning to display pure-color pictures, then the display function is maintained, but power consumption increases due to continuous reversal of data line potentials
Solution Approach 1:
The display substrate is divided into multiple pixel groups, where each pixel group includes pixels of different colors (e.g., red, green, blue) arranged in specific patterns. This segmentation allows the display to process and transmit color information more efficiently, reducing unnecessary potential reversals on data lines when displaying pure-color images.
Solution Approach 2:
The patent implements a periodic scanning mechanism where pixel groups are scanned in organized sequences. By grouping pixels and scanning them periodically rather than continuously individually, the system reduces the frequency of potential reversals on data lines while maintaining display functionality, thereby lowering power consumption during pure-color picture display.
2Adaptability or versatility
If pixels of different colors are connected to the same data line, then data line utilization is improved, but potential reversals increase leading to higher power consumption
Solution Approach 1:
The patent applies different connection configurations to different regions or groups of pixels. Specifically, pixels within the same pixel group that share the same color characteristics are connected to the same data line, while pixels of different colors are connected to different data lines. This local optimization reduces potential reversals on individual data lines while maintaining overall data line utilization efficiency.
Solution Approach 2:
By connecting pixels of the same color to the same data line within pixel groups, the system maintains equipotential conditions on data lines during pure-color picture display. This reduces the need for potential reversals on data lines, as the voltage level remains stable when driving pixels of the same color, thereby reducing power consumption.
3Device complexity
If multiple gate lines are connected to a single shift circuit, then device complexity is reduced, but gate driving signal distribution becomes more complex
Solution Approach 1:
The gate driving circuit is segmented into multiple shift circuits, where each shift circuit is responsible for driving a specific subset of gate lines. This segmentation reduces the complexity of each individual shift circuit while maintaining overall system functionality. The segmented structure makes signal distribution more manageable by assigning specific gate lines to specific shift circuits based on the pixel group connections.
Solution Approach 2:
Each shift circuit is designed to be multi-functional, capable of driving multiple gate lines that correspond to different pixel groups. This universality allows a single shift circuit to handle signal distribution to multiple gate lines through standardized connection patterns, simplifying the overall circuit structure while maintaining ease of signal distribution through repeated modular units.
Data Source
AI summary
Provided is a display substrate. The display substrate includes a base substrate, a plurality of gate lines, a plurality of data lines, and a plurality of rows of pixels arranged in an array on the base substrate, and a plurality of shift circuits disposed on the base substrate, wherein in a plurality of pixels connected to each shift circuit, the respective pixels sharing the same data line have the same color, and each shift circuit is connected to one turn-on signal terminal.