3D Display Cell Polarity Inversion for Luminance Drift
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Solution Overview
Problem
Display systems operating in three-dimensional mode experience a direct current imbalance due to alternating drive voltage polarity, leading to slow luminance drift, which affects the intensity of display cells over time.
Innovation Solution
Inverting the polarity of each cell in a display device every N number of frames, where N is an even number including at least two frames, to maintain direct current balance and consistent luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If alternating drive voltage polarity is used on each frame, then three-dimensional display mode is enabled, but direct current imbalance occurs causing slow luminance drift
Solution Approach 1:
The patent applies periodic action by inverting the polarity of drive voltages applied to display cells at regular intervals (every N frames where N is even). This periodic polarity inversion counteracts the accumulated direct current imbalance that causes luminance drift, while maintaining the alternating polarity pattern needed for three-dimensional display operation. The solution balances the need for 3D functionality with luminance stability through timed, periodic corrections.
2Productivity
If cell value changes every frame, then frame sequential three-dimensional display is achieved, but direct current imbalance and luminance drift occur
Solution Approach 1:
The patent implements periodic polarity inversion every N frames (where N is an even number) to correct direct current imbalance while maintaining continuous frame sequential operation. This periodic correction allows the display to sustain high-speed frame switching for three-dimensional content without accumulating luminance drift, thus preserving both productivity and reliability.
Solution Approach 2:
The patent changes the polarity parameter of drive voltages at specific intervals (every N frames) to correct direct current imbalance. By modifying this electrical parameter periodically, the system maintains frame sequential three-dimensional display capability while preventing luminance drift, thus resolving the contradiction between productivity and reliability.
Data Source
AI summary
A system, method, and computer program product are provided for determining that a display device is operating in a three-dimensional mode. Further, in response to the determination that the display device is operating in the three-dimensional mode, inverting a polarity of each cell of the display device every N number of frames. Additionally, the N number of frames is even and includes at least two frames.