Display Device Reference Voltage Line Merging for MPRT Reduction
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Solution Overview
Problem
Existing display devices face challenges in reducing moving picture response time (MPRT) due to the complexity of configuring additional signal lines required for black data insertion (BDI) driving, which complicates the device configuration and increases power consumption.
Innovation Solution
A display device and driving method that utilize multiple subpixels connected to different gate lines, data lines, and reference voltage lines, where the magnitudes of voltages supplied to these lines are varied to improve MPRT efficiently, allowing for low-power operation by alternating the reference voltages between subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If black data insertion (BDI) driving is used to reduce MPRT, then moving picture response time is improved, but device complexity increases due to additional signal lines
Solution Approach 1:
The patent combines the BDI function with the existing reference voltage line by making the reference voltage line serve dual purposes: providing reference voltage for normal operation and transmitting black data for MPRT reduction. This eliminates the need for separate BDI signal lines, thereby reducing device complexity while maintaining the MPRT improvement benefit
Solution Approach 2:
The reference voltage line is designed to perform multiple functions: it provides reference voltage during normal display operation and serves as a data transmission channel for black data insertion during motion compensation. This multi-functionality allows the system to achieve BDI-driven MPRT reduction without adding dedicated signal lines
2Loss of time
If black data insertion (BDI) driving is used to reduce MPRT, then moving picture response time is improved, but power consumption increases
Solution Approach 1:
The patent merges the BDI operation with the existing reference voltage supply system, allowing black data transmission to occur through the same infrastructure used for reference voltage. This consolidation eliminates the need for separate high-power data transmission channels, thereby reducing overall power consumption while maintaining MPRT improvement
Solution Approach 2:
The system dynamically changes the voltage level on the reference voltage line to encode black data (typically switching between high and low voltage states). By utilizing voltage level changes rather than continuous high-power signaling, the patent achieves effective data transmission for MPRT reduction with lower power consumption
3Loss of time
If additional signal lines are disposed for BDI driving, then MPRT is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent combines the BDI signal transmission function with the existing reference voltage line infrastructure. Since the reference voltage line is already part of the standard display panel structure, reusing it for BDI purposes eliminates the need for additional manufacturing steps to create separate signal lines, thereby improving ease of manufacture while achieving MPRT reduction
Data Source
AI summary
According to embodiments of the present disclosure, there may be provided a display device and a driving method thereof. A first subpixel is electrically connected to a first data line and a first reference voltage line, a second subpixel is electrically connected to the first data line and a second reference voltage line different from the first reference voltage line, and magnitudes of a voltage supplied to the first reference voltage line and a voltage supplied to the second reference voltage line are different from each other. Thus, it is possible to efficiently improve a moving picture response time.