Slanted Backlight Line Light Regions for 3D Display Brightness
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Solution Overview
Problem
Current parallax barrier type three-dimensional display devices suffer from reduced brightness and inability to normally display two-dimensional images due to the use of a parallax barrier that blocks light and requires specific glasses.
Innovation Solution
A display device with a display panel and a backlight unit featuring line light sources at a slanted angle, eliminating the need for a parallax barrier and optical sheets, allowing direct light emission to the panel and enabling both two and three-dimensional image display with increased brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a parallax barrier is used to display three-dimensional images, then three-dimensional display function is achieved, but brightness is reduced and two-dimensional image display is disabled
Solution Approach 1:
The patent removes the parallax barrier component from the display system. Instead of using a barrier to separate left and right eye images, the invention uses a multi-light-source backlight unit that directly provides separate lighting for different pixel groups, eliminating the need for light-blocking barriers and optical sheets while maintaining 3D display functionality.
Solution Approach 2:
The display device achieves multi-functionality by enabling both two-dimensional and three-dimensional image display modes through a single system. By controlling the backlight unit's multiple light sources and the display panel's pixel groups, the device can switch between 2D and 3D modes without requiring separate hardware systems, thus improving versatility while maintaining brightness.
2Adaptability or versatility
If a parallax barrier and optical sheets are used, then three-dimensional image display is achieved, but device weight increases
Solution Approach 1:
The patent extracts and removes the heavy components (parallax barrier and optical sheets) from the display system. The replacement solution uses a multi-light-source backlight unit that integrates the 3D display functionality directly into the lighting system, significantly reducing overall device weight while maintaining 3D display capability.
3Adaptability or versatility
If a parallax barrier is used to separate left and right eye images, then three-dimensional perception is achieved, but light transmission is blocked and brightness decreases
Solution Approach 1:
The patent replaces the mechanical light-blocking barrier system with an optical field-based solution. Instead of using physical barriers to separate left and right eye images, the invention uses multiple independent light sources in the backlight unit that directly illuminate specific pixel groups, achieving binocular parallax display through controlled light emission rather than light blocking.
4Adaptability or versatility
If multiple optical sheets and barriers are included, then three-dimensional display function is achieved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates multiple optical components (parallax barrier, optical sheets) from the display system. The functionality previously distributed across multiple components is consolidated into a single multi-light-source backlight unit, significantly reducing device complexity while maintaining 3D display function.
Solution Approach 2:
The invention merges the functions of multiple separate components (barrier and optical sheets) into a single integrated backlight unit with multiple light sources. This consolidation simplifies the overall system architecture, reduces the number of components, and maintains the necessary 3D display functionality through coordinated operation of the integrated unit.
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 enhances brightness, reduces the display device's weight, and allows for the selective display of two and three-dimensional images without the need for additional glasses, improving image quality and reducing production costs.
Implementation Method 1
a backlight unit including first and second line light regions supplying light to the display panel to display three-dimensional images
Data Source
AI summary
A display device includes a display panel including first to fourth pixels in a first direction, wherein each of the first to fourth pixels has a first width in the first direction and a length more than the width and in a second direction; and a backlight unit including first and second line light regions supplying light to the display panel to display three-dimensional images, wherein the first and second line light regions have a slanted angle with respect to the second direction, wherein light from the first line light region comes to right and left eyes of a viewer through the first and second pixels, respectively, and light from the second light region comes to the right and left eyes through the third and fourth pixels, respectively, wherein the display device has K view points.