Microlens Display Structure for Privacy Viewing and Crosstalk Control
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Solution Overview
Problem
Existing display apparatuses, particularly those in vehicles, struggle with controlling viewing angles to ensure privacy and information protection for drivers and passengers, while maintaining aesthetic appeal and preventing light leakage and crosstalk between different images.
Innovation Solution
A display apparatus design featuring a substrate with specific microlenses and light-blocking patterns that control light paths and viewing angles, allowing different images to be displayed for drivers, front passengers, and rear-seat passengers, while minimizing luminance reduction and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-blocking patterns are added to microlenses to control viewing angles and prevent light leakage, then privacy protection and information security are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent applies local quality by placing light-blocking patterns only on specific portions of specific microlenses (first and third microlenses) rather than uniformly across all microlenses. This selective application controls viewing angles for privacy protection while minimizing overall structural complexity and manufacturing difficulty.
Solution Approach 2:
The patent segments the light-blocking function by dividing the display area into different regions with different microlens configurations. The first microlens has a light-blocking pattern on its first portion, the second microlens has no light-blocking pattern, and the third microlens has a light-blocking pattern on its second portion, allowing differentiated control of light paths for different viewing zones.
2Reliability
If microlenses with light-blocking patterns are used to control light paths, then viewing angle control is improved, but luminance reduction occurs
Solution Approach 1:
The light-blocking patterns are applied only to specific portions of specific microlenses rather than entire microlenses or all microlenses uniformly. This localized approach blocks light only in directions that would cause privacy issues or crosstalk, while preserving luminance in viewing directions that should remain bright.
3Adaptability or versatility
If different images are displayed for different viewing angles, then adaptability and versatility are improved, but crosstalk between images increases
Solution Approach 1:
The patent segments the viewing space into different zones using microlenses with light-blocking patterns. The first microlens directs light for a first viewing angle range, the second microlens for a second range, and the third microlens for a third range, physically separating light paths to prevent crosstalk between different differential images displayed for each zone.
Solution Approach 2:
The microlenses with light-blocking patterns act as intermediaries that control and separate light paths from different sub-pixels. They mediate between the light-emitting sub-pixels and different viewing zones, ensuring that light from each sub-pixel reaches only its intended viewing angle range without interfering with other zones.
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 design provides improved aesthetic appeal, enables differential image viewing based on angle, prevents light leakage, reduces luminance loss, and suppresses crosstalk, enhancing image quality and reducing power consumption.
Implementation Method 1
a first microlens corresponding to each of the plurality of sub-pixels of the first pixel on the substrate, a third microlens corresponding to each of the plurality of sub-pixels of the third pixel on the substrate
Implementation Method 2
a first light-blocking pattern on a surface of the first microlens, and a third light-blocking pattern on a surface of the third microlens
Data Source
AI summary
A display apparatus includes a substrate including a display area including first, second, and third pixels, each of which includes a plurality of sub-pixels, and a non-display area around the display area, a first microlens corresponding to each of the sub-pixels of the first pixel, a third microlens corresponding to each of the sub-pixels of the third pixel, a first light-blocking pattern on a surface of the first microlens, and a third light-blocking pattern on a surface of the third microlens, wherein each of the first and third microlenses includes a first part located at a first side with respect to a division line and a second part located at a second side opposite to the first side, the first light-blocking pattern is disposed on the first part of the first microlens, and the third light-blocking pattern is disposed on the second part of the third microlens.