Stereoscopic Display Data Modulation for 3D Crosstalk Reduction
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Solution Overview
Problem
Patterned retarder type stereoscopic image display devices experience 3D crosstalk due to the interference of left-eye and right-eye image luminance, causing users to see doubled images.
Innovation Solution
A stereoscopic image display device with a data modulation unit that modulates pixel data based on adjacent pixel data, converting 3D image data into analog voltages and outputting these to data lines, and a gate driving circuit that sequentially outputs gate pulses, reducing 3D crosstalk by adjusting pixel modulation data based on the difference between adjacent pixel data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If patterned retarder type stereoscopic image display device is used to display left-eye and right-eye images on different lines, then 3D image is implemented, but 3D crosstalk occurs due to luminance interference between adjacent lines
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing modulation data for adjacent lines before actual image display. The modulation data is computed in advance based on luminance differences between adjacent lines, and this pre-computed data is then used during the display process to adjust pixel values, thereby reducing 3D crosstalk without requiring real-time complex calculations during image rendering
Solution Approach 2:
The patent changes the parameter of pixel data by modulating the luminance values of pixels on adjacent lines. Specifically, the patent adjusts the gray scale values of pixels on lines adjacent to the current line based on the luminance difference between the current line and adjacent lines. This parameter modification reduces the interference that causes 3D crosstalk while maintaining the 3D image display functionality
2Ease of manufacture
If gray scale values of adjacent lines are not modulated, then image data processing is simple, but luminance interference causes doubled images for users
Solution Approach 1:
The patent performs the modulation calculation in advance during the image data processing stage, before the actual display. By pre-computing the modulation data based on luminance differences and storing it for later use, the system avoids complex real-time calculations during image rendering, thus maintaining ease of manufacture while improving user viewing experience
Solution Approach 2:
The patent modifies the gray scale parameter of pixel data by adjusting luminance values based on adjacent line differences. This parameter change is applied systematically to reduce 3D crosstalk. The modulation is performed on specific pixel ranges (first to third pixel ranges from the left edge) to achieve the desired effect while maintaining processing efficiency
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
The solution effectively reduces 3D crosstalk, allowing users to view stereoscopic images with improved clarity and reduced image interference.
Implementation Method 1
The patterned retarder PR comprises first retarders RET1 formed on the odd-numbered lines, and second retarders RET2 formed on the even-numbered lines. The left-eye image of the display panel DIS is converted into first circularly polarized light by the first retarders RET1, and the right-eye image of the display panel DIS is converted into second circularly polarized light by the second retarders RET2.
Implementation Method 2
A left-eye polarization filter of the polarization glasses PG allows only the first circularly polarized light to pass therethrough, and a right-eye polarization filter thereof allows only the second circularly polarized light to pass therethrough.
Data Source
AI summary
Embodiment relate to a display panel that modulates 3D image data based on pixel data of adjacent lines. The display panel includes data lines, gate lines, and a plurality of pixels; a data modulation unit. The modulation unit modulates kth pixel data of a jth line in 3D image data based on the kth pixel data of the jth line and kth pixel data of a line adjacent to the jth line. The data driving circuit converts the modulated 3D image data into analog data voltages and outputs the analog data voltages to the data lines. A gate driving circuit sequentially outputs gate pulses to the gate lines.