Stereoscopic Display Spatial-Time Division Reduces 3D Crosstalk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing stereoscopic image display devices using the polarization glasses method suffer from luminance deviation and increased 3D crosstalk due to interference between left and right eye image data, especially at higher frame frequencies, and face complexity in applying motion estimation and motion compensation techniques.
Innovation Solution
A stereoscopic image display device and method that separates the 3D image signal into left and right eye image data using a vertical k-divisional operation, displaying them in odd and even sub-fields with time-divisional and spatial-divisional driving, reducing interference and enabling simpler application of motion estimation and motion compensation techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If left and right eye image data are alternately displayed in a unit of horizontal line using spatial-divisional driving, then 3D image can be implemented using polarization glasses method, but luminance deviation occurs and 3D crosstalk increases due to interference between left and right eye image data
Solution Approach 1:
The patent divides the display area into multiple vertical regions (first vertical region for left eye image data, second vertical region for right eye image data) and divides time into multiple sub-fields. By segmenting both space and time, the patent displays left and right eye image data in different vertical regions during different sub-fields, preventing interference between the two eyes' image data while maintaining spatial-divisional driving capability.
2Speed
If display panel is driven with higher frame frequency (e.g., 120 Hz, 240 Hz) to improve display smoothness, then motion blur is reduced, but 3D crosstalk increases due to interference between left and right eye image data
Solution Approach 1:
The patent employs periodic action by dividing one frame into multiple sub-fields and alternately displaying left and right eye image data in different vertical regions during different sub-fields. This periodic switching at higher frame frequencies (120 Hz, 240 Hz) reduces motion blur while the spatial separation in vertical regions prevents 3D crosstalk, allowing high-speed operation without crosstalk interference.
3Measurement precision
If motion estimation and motion compensation techniques are applied to reduce motion blur, then display definition is improved, but signal processing complexity increases
Solution Approach 1:
The patent segments the frame into multiple sub-fields and vertically divides the display area into separate regions for left and right eye image data. This segmentation simplifies motion estimation and motion compensation by providing clearly separated temporal and spatial domains, reducing the computational complexity compared to processing interleaved line-by-line data while still achieving high display definition.
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 approach effectively reduces 3D crosstalk, improves response speed, and simplifies the signal processing procedure, allowing for higher frame rates and better display definition by separating and displaying left and right eye image data in a manner that minimizes luminance deviation and facilitates interpolation.
Implementation Method 1
a patterned retarder configured to transmit light from the display panel as a first polarization component and a second polarization component
Data Source
AI summary
A stereoscopic image display device and a method of driving the same are provided. The stereoscopic image display device includes: a display panel; a patterned retarder transmitting light from the display panel as first and second polarization components; a data driving circuit driving data lines of the display panel; a gate driving circuit driving gate lines of the display panel; a 3D formatter: separating input 3D image signal into first and second eye image data; and arranging the first and second eye image data according to a vertical k-divisional operation to generate an original frame; and a timing controller: dividing one frame into k sub-fields with time-divisional driving; and controlling the data driving circuit and the gate driving circuit such that: the first eye image data are displayed in odd-numbered sub-fields with spatial-divisional driving; and the second eye image data are displayed in even-numbered sub-fields with spatial-divisional driving.