Multi-Resolution Pixel Circuit Layout to Prevent Display Flicker
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Solution Overview
Problem
Display apparatuses with multiple display areas of varying image resolutions experience flickering due to differences in initializing voltages and currents, leading to visual discomfort.
Innovation Solution
A display apparatus design that includes pixel circuits with different initializing transistors and driving transistors for each display area, synchronized scan signals, and separate initializing and data voltage lines to maintain consistent image quality across areas with varying resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If different initializing voltages are applied to pixel circuits in different display areas, then display quality can be optimized for each area, but flickering occurs due to voltage level differences
Solution Approach 1:
The patent applies different initializing voltage levels to different display areas (first display area uses first initializing voltage level, second display area uses second initializing voltage level) to optimize display quality for each specific area's resolution characteristics, while still preventing flickering through coordinated control
Solution Approach 2:
The patent changes the initializing voltage parameter (applying different voltage levels to different pixel circuits) to adapt to varying display area requirements, while using synchronized scan signals and coordinated transistor control to maintain temporal consistency and prevent flickering
2Manufacturing precision
If pixel circuits use different initializing voltages for different resolutions, then image quality is improved, but visual discomfort arises from flickering
Solution Approach 1:
The patent implements local quality optimization by applying different initializing voltage levels to pixel circuits in different display areas according to their resolution requirements, while using synchronized scan signals and coordinated transistor control to eliminate flickering and visual discomfort
Solution Approach 2:
The patent uses feedback mechanisms through synchronized scan signals that coordinate the operation of initializing transistors across different display areas, ensuring that voltage changes are applied in a controlled manner that prevents visible flickering while maintaining optimized image quality
3Object-affected harmful factors
If scan signals are synchronized across display areas, then flickering is prevented, but device complexity increases due to additional control circuits
Solution Approach 1:
The patent merges the control functions by using a unified scan signal generation mechanism that simultaneously controls multiple display areas, coordinating the operation of initializing transistors and driving transistors across different regions through synchronized timing, thereby preventing flickering without requiring entirely separate control systems
Data Source
AI summary
A display apparatus that prevents visual recognition of flickering in each of display areas having different resolutions includes a first pixel circuit, a first display element, a second pixel circuit, and a second display element. The first pixel circuit includes: a first driving transistor configured to control a first current that flows to the first display element; and a first initializing transistor configured to apply a first initializing voltage to a gate of the first driving transistor in response to a first scan signal. The second pixel circuit includes: a second driving transistor configured to control a second current that flows to the second display element; and a second initializing transistor configured to apply a second initializing voltage having a level different from a level of the first initializing voltage to a gate of the second driving transistor in response to the first scan signal.