LCD Panel Driving Method Using Time-Space Division for 3D Crosstalk Reduction
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Solution Overview
Problem
Liquid crystal display (LCD) panels face challenges with slow response speed, low resolution, and narrow viewing angles, particularly in 3-D image display where crosstalk due to progressive scan methods decreases display quality.
Innovation Solution
A method and apparatus for driving an LCD panel by generating high and low luminance data frames using a time division rate and displaying them on pixel space-divided into subareas with differing pixel electrode distances, enhancing visibility and preventing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a progressive scan method is used to drive LCD panels, then the display can operate with simpler control, but crosstalk occurs between left and right eye images reducing display quality
Solution Approach 1:
The patent segments the display period into distinct time intervals: a first period for displaying the left eye image, a second period for displaying the right eye image, and a black image insertion period between them. This temporal segmentation prevents crosstalk by ensuring that only one eye's image is displayed at any given time, resolving the contradiction between simple progressive scan control and high display quality.
2Reliability
If a black image is inserted between left and right eye images at high frequency, then crosstalk is prevented and display quality is enhanced, but the complexity of the driving system increases
Solution Approach 1:
The patent implements periodic action by inserting a black image at regular intervals between the left and right eye images in each frame period. This periodic black image insertion occurs at a frequency that is a multiple of the frame rate, creating a consistent temporal pattern that prevents crosstalk while maintaining manageable system complexity through predictable timing cycles.
3Device complexity
If the same data frame is displayed repeatedly, then the display system remains simple, but visibility and display quality are insufficient
Solution Approach 1:
The patent applies dynamics by alternately displaying high luminance data frames and low luminance data frames in a time-division manner. This dynamic variation in luminance levels prevents the display from appearing static, enhances visibility by creating contrast between different display periods, while maintaining relative system simplicity through the use of existing data frames without requiring complex additional processing.
Data Source
AI summary
A method of driving liquid crystal display panel includes generating a plurality of eye data frames from a received frame of image data. A high data frame having a first liquid crystal rotating attribute and a low data frame having a lesser second liquid crystal rotating attribute are respectively generated from a respective two of the generated plurality of eye data frames. The high data frame and the low data frame are alternatingly used to drive the liquid crystal display panel according to a time division rate such that liquid crystal molecules are subjected to low and higher crystal rotating forces. In one embodiment, each pixel is space-divided into first and second sub areas having different distances between the first and second pixel electrodes, and the high data and the low data are time-divided and displayed on the pixel, enhancing visibility of the resulting image for different viewing angles.