Display Anode Voltage Tuning to Prevent Black Floating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices face challenges in maintaining display quality while reducing power consumption, particularly due to issues like black floating phenomena and variations in luminance caused by temperature changes.
Innovation Solution
A voltage setting method for display devices that adjusts anode initialization voltage and data voltage levels to prevent black floating phenomena, involving iterative adjustments based on observations of these phenomena and maintaining optimal voltage thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the anode initialization voltage is increased to prevent black floating phenomena, then display quality is improved, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts the anode initialization voltage level based on detected black floating phenomena and temperature conditions. Instead of using a fixed high voltage that increases power consumption, the system changes the voltage parameter adaptively - applying higher voltage only when black floating is detected and reducing it when conditions are stable, thereby resolving the contradiction between display quality and power consumption.
Solution Approach 2:
The patent implements a feedback mechanism where the display device monitors for black floating phenomena and temperature changes, then adjusts the anode initialization voltage accordingly. This closed-loop control ensures display quality is maintained only when necessary, reducing unnecessary power consumption while preventing quality degradation when issues are detected.
2Stability of the object's composition
If the data voltage level is increased to maintain display quality across temperature variations, then luminance stability is improved, but power consumption increases
Solution Approach 1:
The patent adjusts the data voltage level dynamically based on temperature conditions and detected display quality issues. When temperature variations cause luminance instability or black floating phenomena are detected, the system increases data voltage to the b-th level. When conditions are stable, it reduces voltage to the a-th level, maintaining luminance stability only when necessary and reducing power consumption otherwise.
Solution Approach 2:
The patent transitions from static voltage levels to dynamic voltage adjustment based on real-time temperature and display quality conditions. The system continuously adapts voltage levels to match operational conditions, ensuring luminance stability during temperature variations while minimizing power consumption during stable operating conditions.
3Reliability
If iterative voltage adjustments are performed to eliminate black floating phenomena, then display quality is improved, but processing time increases
Solution Approach 1:
The patent performs partial iterative adjustments rather than exhaustive testing. When black floating phenomena are detected, the system increases data voltage to the b-th level and checks if the issue is resolved. If resolved, it stops further adjustments. This partial action approach eliminates black floating when necessary while avoiding unnecessary iterative processing time when conditions are already optimal.
Solution Approach 2:
The patent skips unnecessary iterative adjustments by using temperature thresholds and initial detection results to determine when voltage changes are needed. Instead of performing systematic iterative adjustments in all conditions, the system rushes through the process by directly applying predetermined voltage levels when temperature conditions indicate potential issues, reducing processing time while maintaining display quality.
Data Source
AI summary
In a voltage setting method of an electronic device, in which a plurality of sub-pixels are in a display device, and an anode initialization voltage applied to the plurality of sub-pixels is set, the voltage setting method includes: setting a data voltage for displaying an image having a black grayscale to an a-th level in the plurality of sub-pixels; applying the anode initialization voltage having a first level; determining whether a black floating phenomenon has been observed; decreasing the anode initialization voltage by a second level based on the black floating phenomenon being observed; applying the set anode initialization voltage; and writing a level of the set anode initialization voltage to the display device based on a determination that the black floating phenomenon has not been observed.