Electro-optic Device Symmetrical Light Blocking for Uniform Brightness
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Solution Overview
Problem
Existing directional display devices face issues with varying image brightness between multiple images due to asymmetrical light blocking regions, leading to inconsistent image quality.
Innovation Solution
An electro-optic device with alternately arranged first and second pixels, each divided into pixel groups, where a light blocking element with symmetrically positioned openings ensures uniform light distribution across visible ranges for each pixel group, maintaining consistent image brightness between images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If asymmetrical light blocking regions are used in directional display devices, then directional display functionality is achieved, but image brightness varies between multiple images
Solution Approach 1:
The patent applies asymmetry in reverse - it uses symmetrical arrangement of light blocking regions relative to each pixel group. Specifically, the light blocking regions are positioned at symmetrical positions with respect to the center of each pixel group, which balances the light distribution and eliminates brightness variations between different images while preserving directional display capabilities
2Ease of operation
If light blocking regions are positioned to achieve directional display, then viewing angle control is improved, but image quality consistency deteriorates
Solution Approach 1:
The patent applies local quality by making the light blocking regions have different transmittance characteristics. Specifically, the light blocking regions are designed with different transmittances to compensate for variations in light intensity, ensuring that each region contributes appropriately to the overall image quality and maintains consistency across different viewing angles and images
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 achieves uniform image brightness and improved contrast ratios between images in directional displays by symmetrically positioning light blocking regions, enhancing display quality and reducing brightness variations.
Implementation Method 1
a light blocking element that overlaps the plurality of pixels in plan view... The light blocking element has openings
Implementation Method 2
Each first pixel has a light blocking region that partially intercepts light to be emitted from the first pixel, and each second pixel has a light blocking region that partially intercepts light to be emitted from the second pixel
Data Source
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AI summary
An electro-optic device includes a plurality of pixels (7) at least including first pixels (71) that form a first image and second pixels (72) that form a second image, the first pixels and the second pixels being arranged alternately in a first direction (X); and a light blocking element (99) that overlaps the plurality of pixels in plan view. The plurality of pixels are divided into a plurality of pixel groups, each pixel group corresponding to every two pixels of the plurality of pixels, the two pixels being one of the first pixels and one of the second pixels that are adjacent to each other in the first direction. The light blocking element has openings, each opening being provided for a corresponding one of the pixel groups and located in a region that overlaps the two pixels of the pixel group in plan view. Each first pixel has a light blocking region (83) that partially intercepts light to be emitted from the first pixel, and each second pixel has a light blocking region (83) that partially intercepts light to be emitted from the second pixel, the light blocking regions of the first pixel and the second pixel in each pixel group being positioned symmetrically to each other in plan view.