Multi-Frequency Display Boundary Compensation
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Solution Overview
Problem
Conventional light emitting display devices face challenges in reducing power consumption while maintaining high display quality, particularly when handling dynamic and still images simultaneously.
Innovation Solution
The implementation of a display device with a multi-frequency mode that divides the display area into two regions operating at different frequencies, where a driving controller generates boundary compensation data to adjust image signals, optimizing power usage and image quality by compensating for boundary areas between frequency zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the entire display area operates at a high frequency to maintain image quality for dynamic images, then display quality is improved, but power consumption increases
Solution Approach 1:
The display area is divided into a first display area and a second display area that operate at different frequencies. The first display area operates at a first frequency while the second display area operates at a second frequency, allowing different regions to have different refresh rates based on their content requirements. This segmentation enables high frequency operation only where needed for dynamic images while maintaining lower frequency for still images, thereby reducing overall power consumption while preserving display quality for moving content.
Solution Approach 2:
Different regions of the display area are assigned different operating frequencies based on their specific requirements. The first display area operates at a higher frequency suitable for dynamic images, while the second display area operates at a lower frequency suitable for still images. This local differentiation of operating characteristics ensures that each region receives the appropriate quality level needed for its content type, optimizing both display quality and power efficiency.
2Use of energy by moving object
If the display area is divided into multiple frequency zones to reduce power consumption, then power consumption is reduced, but luminance deviations occur at boundary areas
Solution Approach 1:
Boundary compensation data is generated in advance to pre-correct for the luminance deviations that would occur at the boundary between the first and second display areas. This preliminary compensation action addresses the luminance uniformity issue before it becomes visually apparent, allowing the multi-frequency operation to proceed without compromising image quality at the transition zones between different frequency regions.
Solution Approach 2:
Boundary compensation data acts as an intermediary element that mediates between the first image signal and the second image signal at the boundary area. This compensation data corrects the luminance deviations caused by the frequency transition, ensuring smooth visual transition between regions operating at different frequencies while maintaining overall luminance uniformity across the display.
3Stability of the object's composition
If boundary compensation data is generated to correct luminance deviations, then luminance uniformity is improved, but device complexity increases
Solution Approach 1:
The driving controller is designed to perform multiple functions: it simultaneously generates the first image signal for the first display area, generates the second image signal for the second display area, and generates the boundary compensation data for the boundary region. By consolidating these functions within a single controller, the system achieves luminance uniformity across frequency boundaries without requiring additional separate processing units or devices, thereby managing complexity efficiently.
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 effectively reduces power consumption while enhancing display quality by optimizing the frequency operation of different image areas, preventing luminance deviations and improving overall image clarity.
Implementation Method 1
A light emitting display device among various types of display device displays an image by using a light emitting diode that generates a light through the recombination of electrons and holes
Data Source
AI summary
A display device includes a display panel, a data driver, a scan driver, and a driving controller. The display panel includes a first display area and a second display area, which operate at different frequencies from each other in a multi-frequency mode. The driving controller controls the data driver and the scan driver. The driving controller generates boundary compensation data by compensating for boundary image signals, which are input to correspond to a boundary area of the first display area in the multi-frequency mode and drives the data driver based on a compensation image signal including the boundary compensation data.