Parallax Barrier Display Polarity Inversion for Flicker Suppression
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Solution Overview
Problem
Existing display devices using parallax barrier systems suffer from flicker and lateral shadow issues when displaying stereoscopic images, particularly when using liquid crystal display panels with alternating right and left eye images.
Innovation Solution
The display device employs a configuration where picture elements are arranged in a matrix with alternating polarities for each color, ensuring that the polarities of red, green, blue, and white elements are equally dispersed, and drivers apply voltages with opposite polarities to adjacent columns of picture elements to prevent flicker and lateral shadow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If liquid crystal display panel displays alternating right and left eye images using parallax barrier system, then stereoscopic image display is achieved, but flicker occurs
Solution Approach 1:
The patent applies periodic action by alternating the polarity of voltages applied to liquid crystal pixels in a systematic pattern. The driving method periodically inverts voltage polarity between adjacent picture element columns and between different frames, creating a rhythmic electrical stimulus that prevents liquid crystal molecules from settling into unstable states that cause flicker, while maintaining the stereoscopic image display function.
2Adaptability or versatility
If liquid crystal display panel displays alternating right and left eye images using parallax barrier system, then stereoscopic image display is achieved, but lateral shadow occurs
Solution Approach 1:
The patent applies local quality by varying the voltage polarity in different spatial locations across the display panel. Specifically, adjacent picture element columns are driven with opposite polarities, and different regions of the panel use different inversion patterns. This localized polarity variation ensures uniform light transmission characteristics across the entire panel, preventing lateral shadow artifacts while maintaining stereoscopic display capability.
3Ease of operation
If voltage polarity is not inverted between adjacent picture element columns, then simple driving is maintained, but flicker and lateral shadow occur
Solution Approach 1:
The patent applies segmentation by dividing the display panel into distinct picture element columns that are driven independently with alternating polarities. This segmentation allows the driving circuit to apply different voltage patterns to different column groups, managing complexity through systematic division while achieving the desired flicker and lateral shadow suppression效果.
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
This configuration effectively suppresses flicker and lateral shadow, enhancing the display quality by ensuring that the polarities of the picture elements of each color are equally dispersed, thereby improving the visibility and resolution of stereoscopic images.
Implementation Method 1
a display panel in which a plurality of picture element columns are arranged in a column direction and a row direction, respectively, the plurality of picture element columns each including red, green, blue and white picture elements arranged one by one in the column direction
Implementation Method 2
drivers for applying a voltage to the display panel. The first image and the second image are respectively displayed by first picture element columns and second picture element columns provided alternately along the row direction
Data Source
AI summary
A display device includes drivers. The drivers apply a voltage having a polarity opposite to a polarity of a voltage applied to red, green, blue, and white picture elements in one first picture element columns to red, green, blue, and white picture elements in another first picture element columns adjacent to the one first picture element columns, and apply a voltage having a polarity opposite to a polarity of a voltage applied to red, green, blue, and white picture elements in one second picture element columns to red, green, blue, and white picture elements in another second picture element columns adjacent to the one second picture element columns.