Display Apparatus Black Image Frame Segmentation
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Solution Overview
Problem
Display apparatuses face challenges in achieving high resolution and high-speed driving due to the difficulty in shortening the one-horizontal period for data voltage supply to pixels, which affects the ability to normally emit light corresponding to the data voltage.
Innovation Solution
A display apparatus is designed with a black image inserted between real images, where the one-frame period for displaying the black image is set to be shorter than the one-frame period for real images, utilizing a gate driver and controller to manage gate signals and data voltages, allowing for a longer data voltage charging period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the one-horizontal period is shortened to achieve high-speed driving, then the display speed is improved, but the data voltage charging period is insufficient causing pixels to fail to normally emit light
Solution Approach 1:
The patent divides the display frame into multiple sub-frames, with each sub-frame containing multiple horizontal lines. By processing and displaying different sub-frames at different speeds, the system can shorten the overall frame period while ensuring sufficient charging time for each horizontal line, thus resolving the contradiction between display speed and charging period.
Solution Approach 2:
The patent implements dynamic scanning where the display apparatus adjusts the scanning speed for different sub-frames and horizontal lines. By dynamically controlling the gate signal timing and data voltage supply duration for each segment, the system optimizes the balance between overall display speed and individual charging periods.
2Reliability
If the one-horizontal period is extended to ensure sufficient data voltage charging, then the pixel lighting is improved, but the display speed is reduced
Solution Approach 1:
The patent segments the display content into multiple sub-frames, allowing different charging durations for different segments. This enables high-quality pixel lighting for segments requiring longer charging while maintaining fast display for other segments, thus resolving the contradiction between reliability and speed.
Solution Approach 2:
The patent applies different scanning and charging parameters to different horizontal lines and sub-frames based on their specific requirements. This local optimization ensures that each segment receives appropriate charging time for reliable pixel lighting while the overall display maintains high speed through varied timing strategies.
Data Source
AI summary
A display apparatus can include a display panel configured to display a black image and a real image, a gate driver configured to display gate signals to a plurality of gate lines provided in a display area of the display panel, and a controller configured to control the gate driver. Here, one-frame period for displaying the black image is shorter than one-frame period where the real image is displayed. Further, the gate driver can include a plurality of stages configured to supply the gate signals to the plurality of gate lines, and a plurality of dummy stages connected directly between the plurality of stages and the controller. In addition, gate start signals for driving the plurality of stages are supplied to the plurality of dummy stages by the controller.