Display Device Masking Part Scan Signal Segmentation
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Solution Overview
Problem
Display devices face challenges in compensating pixels between moving and still image units, leading to inefficiencies in image display and potential issues with maintaining image data and luminance consistency.
Innovation Solution
A display device configuration that includes a masking part connected to a second scan driver, which selectively applies compensation and initialization scan signals to the still image unit, ensuring proper compensation and initialization of pixels in the moving image unit adjacent to the still image unit, using a masking circuit to manage scan signals and maintain image stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display panel is driven at a driving frequency with moving image unit and still image unit, then image display capability is improved, but pixel compensation accuracy deteriorates due to signal interference between units
Solution Approach 1:
The display panel is divided into a moving image unit and a still image unit with distinct scan signal application timing. The masking part segments the scan signal application to different time periods: initialization scan signals are applied only to the still image unit during a first period, while compensation scan signals are applied to both units during a second period. This segmentation prevents signal interference and enables accurate pixel compensation in both units simultaneously.
2Reliability
If compensation scan signals are applied to all pixels continuously, then pixel compensation is improved, but energy consumption increases and still image data stability deteriorates
Solution Approach 1:
The scan signal application follows a periodic pattern with distinct time periods. During a first period, only initialization scan signals are applied to the still image unit. During a second period, compensation scan signals are applied to both moving and still image units. This periodic action ensures proper pixel compensation while maintaining still image data stability and reducing unnecessary energy consumption compared to continuous compensation signal application.
3Stability of the object's composition
If initialization scan signals are applied to still image unit during moving image refresh, then image data stability is improved, but pixel compensation in adjacent moving image pixels deteriorates
Solution Approach 1:
The timing of scan signal application is segmented into different periods for different image units. Initialization scan signals are applied only to the still image unit during a first period when moving image pixels are not being compensated. During a second period, compensation scan signals are applied to both units. This temporal segmentation prevents initialization signals from interfering with compensation operations in adjacent moving image pixels, maintaining both image data stability and compensation accuracy.
Data Source
AI summary
A display device includes a display panel including a first image unit and a second image unit, a data driver which applies data voltages to the display panel, a first scan driver which applies write scan signals to the display panel, a second scan driver which applies compensation scan signals and initialization scan signals to the display panel, and a masking part connected to the second scan driver and which selectively applies the initialization scan signals to the second image unit.