Dynamic Light Blocking Unit for 3D Display Color Moire
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Solution Overview
Problem
Existing 3D display devices experience degradation in image quality due to color moire and 3D moire issues when switching between 3D and 2D displays, particularly caused by misalignment of light blocking members with pixel boundaries, leading to uneven brightness and color balance.
Innovation Solution
A display device with a light blocking unit that dynamically switches the extending direction of light blocking areas between the first and second directions based on the display orientation, preventing the formation of light blocking areas during 2D display to maintain even color distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light blocking members are used to enable 3D display, then 3D stereoscopic display capability is improved, but color moire and uneven brightness occur during 2D display
Solution Approach 1:
The light blocking unit dynamically changes its light blocking configuration based on display mode. In 3D display mode, light blocking areas are formed to separate parallax images for different viewpoints. In 2D display mode, the light blocking unit stops forming these areas, allowing uniform light transmission and eliminating color moire. This dynamic adaptability resolves the contradiction between 3D capability and color uniformity.
Solution Approach 2:
The patent changes the optical parameters of the light blocking unit by switching between two states: forming light blocking areas for 3D display and stopping formation of these areas for 2D display. This parameter change allows the same structure to serve different display modes without causing color moire in 2D mode, thus resolving the contradiction between versatility and color uniformity.
2Adaptability or versatility
If light blocking areas are formed along the first direction for 3D display, then parallax image distribution to multiple viewpoints is improved, but color moire occurs due to misalignment with pixel boundaries
Solution Approach 1:
The light blocking unit dynamically adjusts its operation based on display mode. During 3D display, it forms light blocking areas that may temporarily misalign with pixel boundaries, but this is acceptable as 3D functionality is prioritized. During 2D display, it stops forming these areas entirely, eliminating the misalignment issue and color moire. This dynamic approach resolves the contradiction between multi-viewpoint capability and alignment precision.
3Adaptability or versatility
If the display panel displays parallax image in first display state, then 3D stereoscopic image is achieved, but brightness unevenness occurs due to light blocking
Solution Approach 1:
The system dynamically switches between forming and stopping formation of light blocking areas based on display mode. In 3D mode, light blocking areas are formed to enable parallax distribution, accepting some brightness non-uniformity as necessary for 3D effect. In 2D mode, the light blocking unit stops forming these areas, restoring uniform brightness. This dynamic switching resolves the contradiction between 3D capability and brightness uniformity.
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 solution effectively prevents color moire and 3D moire, ensuring consistent brightness and color balance across the display, regardless of the display orientation or mode, thereby enhancing image quality in both 3D and 2D viewing experiences.
Implementation Method 1
a distribution unit that distributes light emitted from each pixel configured to display a parallax image corresponding to each of a plurality of viewpoints
Implementation Method 2
a light blocking unit that is disposed between the display panel and the distribution unit and that blocks part of the emitted light
Data Source
AI summary
A display device includes a display panel including a plurality of pixels arrayed along first and second directions, a distribution unit that distributes light emitted from each pixel configured to display a parallax image corresponding to each of a plurality of viewpoints, and a light blocking unit between the display panel and the distribution unit. The distribution unit distributes light emitted from each of the pixels to the plurality of viewpoints along the first direction in a first display state where the display panel displays a parallax image, or stops distributing emitted light in a second display state, displaying a planar image. The light blocking unit forms, along the first direction, a plurality of first light blocking areas each extending along the second direction blocking some emitted light in the first display state, and stops forming the first light blocking areas in the second display state.