Layered Display Driving for Global Black Insertion and Sharp Motion
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Solution Overview
Problem
Existing display technologies face challenges in achieving higher definition, increased operation speed, and improved display quality, particularly in devices requiring global black insertion for reduced afterimages and image blur, such as VR and AR devices.
Innovation Solution
A display apparatus and method involving a layered structure with driver circuit regions and display regions, utilizing transistors with metal oxide and silicon semiconductor layers, and light-emitting elements like organic EL elements, enabling simultaneous operations for global black insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black insertion driving is performed to reduce afterimage and image blur, then display quality is improved, but operation speed decreases due to additional black display periods
Solution Approach 1:
The patent implements periodic black insertion within each frame by dividing the frame into multiple periods, where black display is performed in specific periods (e.g., every other period or for certain durations). This periodic action reduces afterimage and image blur while maintaining overall frame rate by efficiently utilizing time allocation between black and color display periods.
Solution Approach 2:
The patent dynamically adjusts the black insertion strategy based on display content and requirements, allowing flexible control over black display duration and frequency. The driving method can adaptively modify black insertion parameters to balance between display quality improvement and operation speed maintenance.
2Reliability
If global black insertion is performed simultaneously across the whole display portion, then display quality is further improved, but device complexity increases
Solution Approach 1:
The patent merges the black insertion operation across all display regions by controlling pixel circuits simultaneously throughout the display portion. This global synchronization achieves uniform black display quality improvement without requiring separate control mechanisms for different regions, thereby limiting the increase in device complexity.
Solution Approach 2:
The patent designs the pixel circuit and driving method to perform multiple functions: normal color display, black insertion, and gaze sensing. By making the same hardware structure universally capable of these different operations, the patent avoids adding dedicated components for each function, thus controlling device complexity while achieving global black insertion.
3Measurement precision
If higher resolution display panels are used, then definition is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the display panel into multiple pixel circuits with standardized structures, where each pixel contains transistors and capacitors arranged in a repetitive pattern. This segmentation allows high-resolution displays to be manufactured using standardized processes, reducing the impact of manufacturing variability and making high definition more achievable.
Solution Approach 2:
The patent employs transistors with metal oxide semiconductor layers that offer advantageous electrical characteristics for high-resolution displays. By changing the semiconductor material parameters and optimizing transistor design, the patent achieves better performance with reduced sensitivity to manufacturing variations, thereby supporting higher definition displays.
4Speed
If fast response speed is required for moving images, then operation speed is improved, but display quality may deteriorate due to motion blur
Solution Approach 1:
The patent uses periodic black insertion to combat motion blur in fast-moving images. By periodically displaying black frames or black periods between color frames, the patent resets the persistence of vision effect, thereby maintaining sharpness of moving images while preserving the fast response speed capability of the display panel.
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
The solution achieves higher definition, increased operation speed, and enhanced display quality by allowing simultaneous lighting and darkening of pixels, suitable for devices requiring high-resolution and fast-moving images.
Implementation Method 1
By voltage application to this element, light emission can be obtained from the light-emitting organic compound
Data Source
AI summary
A method for driving a novel display apparatus is provided. The method is a method for driving a display apparatus including a first layer and a second layer over the first layer. The first layer includes a plurality of driver circuit regions. The second layer includes a plurality of display regions. Each of the plurality of driver circuit regions includes a driver circuit. Each of the plurality of display regions includes a plurality of pixels. Each of the plurality of pixels includes a light-emitting element. The driver circuit included in one of the plurality of driver circuit regions has a function of driving each of the plurality of pixels included in one of the plurality of display regions. The method for driving the display apparatus includes: performing a first operation in which an operation of sequentially writing an image signal row by row in each of the plurality of display regions is performed and the operation is performed in all the plurality of display regions at the same time; performing a second operation in which the light-emitting elements included in the plurality of pixels are brought into a light-emitting state simultaneously after the first operation; and performing a third operation in which the light-emitting elements included in the plurality of pixels are brought into a non-light-emitting state simultaneously after the second operation.