Segmented Display Data Lines for Faster Pixel Writing
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Solution Overview
Problem
Existing display devices with increased pixel count and screen size face challenges in driving data lines at high speed due to increased load capacitance, leading to longer initialization and data writing times.
Innovation Solution
The display device employs multiple data lines and switch circuits to control electrical coupling between data lines and a data transfer line, allowing for simultaneous data transfer to groups of pixels, thereby reducing the load on individual data lines and improving driving speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of pixels and screen size are increased to achieve high definition display, then the load capacitance of the data line increases, but the data line driving speed decreases and initialization and data writing times become longer
Solution Approach 1:
The invention divides the display panel into multiple regions (first region and second region) with separate data lines (first data line and second data line) for each region. This segmentation reduces the number of pixels connected to each individual data line, thereby reducing the load capacitance on each data line and enabling faster driving speeds while maintaining high overall resolution
Solution Approach 2:
The invention combines multiple data lines with a single data transfer line through switch circuits. The data transfer line serves as a shared backbone that can sequentially connect to different data lines, allowing efficient data distribution to multiple pixel groups without requiring separate transfer lines for each data line
2Quantity of substance
If the number of pixels and screen size are increased to achieve high definition display, then the load capacitance of the data line increases, but the initialization time becomes longer
Solution Approach 1:
By segmenting the display into multiple regions with separate data lines, the initialization process can be performed independently on each segment rather than initializing the entire display through a single data line, reducing the total initialization time
Solution Approach 2:
The switch circuits are pre-configured to control the connection between data lines and the data transfer line, allowing for faster switching and reduced initialization time when data needs to be transferred between different data lines or regions
3Quantity of substance
If the number of pixels and screen size are increased to achieve high definition display, then the load capacitance of the data line increases, but the data writing time becomes longer
Solution Approach 1:
Data writing is divided into parallel operations across multiple segmented data lines, allowing simultaneous data transfer to different regions of the display, thereby reducing the total data writing time despite the increased overall pixel count
Solution Approach 2:
The switch circuits dynamically control the connection between the data transfer line and different data lines, enabling flexible and adaptive data routing that optimizes data writing speed by activating only the necessary data lines for current operation
Data Source
AI summary
A display device that includes a plurality of first light-emitting elements, a plurality of second light-emitting elements, a data transfer line, a first data line extending in a first direction, a second data line extending in the first direction and adjacent to the first data line along the first direction, a plurality of first pixel circuits coupled to the first data line and respectively coupled to the plurality of first light-emitting elements, a plurality of second pixel circuits coupled to the second data line and respectively coupled to the plurality of second light-emitting elements, a first switch circuit that controls electrical coupling between the first data line and a data transfer line, and a second switch circuit that controls electrical coupling between the second data line and the data transfer line. In a plan view, the first switch circuit overlaps at least one of the plurality of first light-emitting elements.