Display Panel Driving Method for Faster Response Time
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in efficiently driving liquid crystal display panels to improve response time and reduce ghosting issues, particularly when transitioning between different grayscale levels.
Innovation Solution
A method for driving a display panel involves obtaining display data for current and previous frames, determining if the data has changed, and if so, converting default grayscale voltages to target grayscale voltages with a higher number of bits, resulting in a greater voltage difference and improved electric field strength for faster liquid crystal molecule rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the number of grayscale bits is increased to improve response rate, then the voltage difference and electric field strength increase, but the device complexity and power consumption increase
Solution Approach 1:
The patent pre-calculates and stores conversion relationships between different grayscale bit depths (e.g., 6-bit to 10-bit conversion tables) in advance. When switching from default to target grayscale bits, the system directly retrieves pre-computed voltage values rather than calculating in real-time, eliminating computational complexity during operation while achieving faster response rates through higher voltage differences
Solution Approach 2:
The patent dynamically changes the number of grayscale bits (e.g., switching between 6-bit and 10-bit modes) based on display content requirements. By adjusting the grayscale bit depth parameter, the system optimizes the voltage difference applied to liquid crystal molecules, achieving faster response rates when high precision is needed while reducing complexity when lower precision suffices
2Loss of time
If the voltage difference is increased to reduce response time, then the electric field strength increases, but the risk of liquid crystal damage and display instability increases
Solution Approach 1:
The patent applies different voltage differences to different grayscale levels rather than using a uniform high voltage for all transitions. By optimizing the voltage difference for each specific grayscale transition (e.g., from grayscale 0 to 255 versus from 128 to 255), the system achieves fast response times for critical transitions while maintaining safe voltage levels for others, preventing liquid crystal damage and ensuring display stability
Solution Approach 2:
The patent dynamically adjusts the target grayscale voltage based on the current display frame and previous frame comparison. When frame changes are detected, the system selectively applies enhanced voltage differences only to sub-pixels that require grayscale transitions, rather than uniformly increasing voltage across the entire display. This dynamic approach reduces response time for changing regions while maintaining stability in static regions
3Manufacturing precision
If the grayscale voltage is converted to higher bits to reduce ghosting, then the image quality improves, but the power consumption increases
Solution Approach 1:
The patent implements partial grayscale bit conversion by selectively applying 10-bit grayscale voltages only to sub-pixels that require precise grayscale transitions (detected through frame comparison), while maintaining 6-bit operation for sub-pixels with minimal or no changes. This partial application of high-precision voltage reduces ghosting artifacts in critical areas without proportionally increasing power consumption across the entire display panel
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the response rate of liquid crystal molecules by generating a stronger electric field, thereby reducing response time and minimizing ghosting issues during grayscale transitions.
Implementation Method 1
there is a target voltage difference between a target grayscale voltage corresponding to the sub-pixel and a voltage on a common electrode, and the target voltage difference is greater than the default voltage difference
Data Source
AI summary
A driving method for a display panel (100), and a display apparatus. The method includes: acquiring display data of a current frame and display data of a previous frame (S10); determining whether the display data of the current frame is the same as the display data of the previous frame (S20); if not, converting a default gray scale voltage corresponding to at least one sub-pixel among default gray scale voltages corresponding to a default gray scale bit number carried by the display data of the current frame into a target gray scale voltage of a target gray scale bit number, and driving the display panel (100) to display (S30).