Panel Driving Pulse Timing for Uniform Frame Brightness
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Solution Overview
Problem
The existing panel driving methods cause horizontal bright lines and light/dark line issues due to frequency switching between frames, leading to visible brightness inconsistencies.
Innovation Solution
A panel driving device and method that generates initial scan and light emitting signals with non-overlapping pulse periods, adjusting these signals with an offset time associated with frame number to achieve uniform brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-emission is conducted in a frame to solve panel flashing and camera shooting field problems, then panel flashing and camera shooting field issues are resolved, but horizontal bright lines and light/dark line problems occur due to frequency switching between frames
Solution Approach 1:
The patent applies parameter changes by adjusting the start time of emission signals in different frames through frequency switching control. Specifically, the timing controller modifies the emission signal parameters (start time, duration) based on frame number to compensate for the horizontal bright line issue while maintaining the multi-emission benefit for solving panel flashing and camera shooting field problems
Solution Approach 2:
The patent implements dynamics by dynamically adjusting the emission signal timing based on frame number. The timing controller continuously modifies the start time of emission signals across different frames, creating a dynamic compensation mechanism that adapts to the accumulated brightness differences and eliminates horizontal bright lines while preserving multi-emission functionality
2Reliability
If frequency switching between frames is used to control emission signals, then panel flashing issues are resolved, but brightness uniformity deteriorates due to accumulated time differences in start time
Solution Approach 1:
The patent implements feedback by using the frame number as a feedback parameter to adjust the emission signal start time. The timing controller monitors the frame number and uses it to calculate the appropriate start time offset, creating a closed-loop control system that maintains brightness uniformity while resolving panel flashing issues through cumulative time adjustment
Data Source
AI summary
A panel driving device includes a processor. In a first frame, an initial scan signal has an initial scan pulse signal. In a second frame, the initial scan signal has the initial scan pulse signal, and the second frame is located after the first frame. In the second frame, the processor shifts an initial light emitting pulse signal of an initial light emitting signal by the first period and an offset period, and a pulse period of the initial light emitting pulse signal does not overlap a pulse period of the initial scan pulse signal, and the offset period is associated with a frame number.