Display Apparatus Driving Frequency Adaptability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display apparatuses experience deterioration in display quality and operation reliability when the driving frequency of the display panel is changed, leading to recognizable scene changes, luminance changes, and color coordinate changes.
Innovation Solution
A display apparatus with a device controller that adjusts the driving frequency to a first or second frequency in response to a frequency change signal, maintaining the widths of driving signals such as the vertical synchronization signal, start signal, and clock signal, and compensating data voltages with a higher gamma voltage when switching frequencies, ensuring continuous display without a 'display off' period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the driving frequency of the display panel is changed, then the adaptability of the display apparatus is improved, but the display quality and operation reliability deteriorate
Solution Approach 1:
The patent applies parameter changes by adjusting the driving frequency of the display panel between different modes (e.g., 60Hz and 144Hz) while maintaining signal width consistency. The device controller modifies frequency parameters dynamically based on input signals, enabling the display to adapt to different operating conditions without compromising reliability through proper signal synchronization maintenance.
2Adaptability or versatility
If the driving frequency of the display panel is changed, then the adaptability of the display apparatus is improved, but the display quality deteriorates with recognizable scene changes and luminance changes
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting the driving frequency while maintaining consistent signal widths for vertical synchronization, start, and clock signals. This approach allows the display to switch between frequency modes without causing noticeable scene changes or luminance variations, preserving display quality throughout the transition.
3Adaptability or versatility
If the driving frequency of the display panel is changed, then the adaptability of the display apparatus is improved, but the operation reliability deteriorates
Solution Approach 1:
The patent implements parameter changes by modifying the driving frequency in response to frequency change signals while maintaining the widths of critical driving signals. The device controller ensures that vertical synchronization signal width, start signal width, and clock signal width remain consistent before and after frequency changes, thereby preventing display quality deterioration and maintaining operation reliability during frequency transitions.
Data Source
AI summary
A display apparatus can include a display panel configured to display images; a scan driver configured to supply scan signals to the display panel; a data driver configured to supply data voltages to the display panel; a timing controller configured to control the scan driver and the data driver; and a device controller configured to in response to receiving a frequency change signal, change a driving frequency of a device from a first frequency to a second frequency higher than the first frequency or change the driving frequency of the device from the second frequency to the first frequency, while maintaining widths of driving signals of the scan driver before and after the driving frequency is changed, in which the device includes at least one of the scan driver or the data driver.