Microlens Display Structure for Viewing Angle and Light Leakage Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display apparatuses, particularly OLED displays on vehicles, face challenges in controlling the viewing angle to ensure privacy and prevent light leakage while maintaining luminance and manufacturing efficiency.
Innovation Solution
A display apparatus design featuring a substrate with a display area and non-display area, incorporating microlenses and light-blocking patterns on each pixel to control light emission paths and prevent light leakage, while simplifying manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-blocking layer is disposed between the microlens and the light-emitting part, then light leakage is prevented, but the number of layers increases and manufacturing complexity increases
Solution Approach 1:
The light-blocking function is extracted from a separate layer and integrated directly into the microlens structure through the light-blocking pattern formed on the microlens surface. This eliminates the need for a distinct light-blocking layer between the microlens and light-emitting part, reducing total layer count while maintaining light leakage prevention
Solution Approach 2:
The light-blocking pattern is merged with the microlens structure, combining the light focusing function of the microlens with the light blocking function in a single integrated component. This reduces the number of separate layers and simplifies the overall device structure
2Ease of manufacture
If the light-blocking pattern is disposed directly on the microlens, then manufacturing process is simplified, but light leakage control may be compromised
Solution Approach 1:
The light-blocking pattern is formed directly on the microlens surface in the same manufacturing process, merging two functions (light blocking and light focusing) into one component. This integration simplifies the manufacturing process by reducing the number of separate fabrication steps and layer deposition processes
Solution Approach 2:
The light-blocking pattern is applied locally to specific regions of the microlens surface where light leakage occurs, rather than covering the entire structure. This localized approach maintains effective light leakage control while minimizing interference with the microlens light focusing function
3Object-affected harmful factors
If viewing angle is limited for privacy protection, then privacy is protected, but luminance may be reduced
Solution Approach 1:
The light-blocking pattern is applied locally to specific angular regions of the microlens rather than uniformly across the entire display. This allows the display to maintain high luminance for front-facing viewers while blocking light leakage at specific side angles, achieving privacy protection without significant luminance loss
Solution Approach 2:
Instead of blocking light in all directions, the light-blocking pattern applies partial blocking only to the specific angular ranges where privacy concerns exist. This partial action approach maintains overall luminance while providing targeted privacy protection at critical viewing angles
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 effectively controls light emission at specific angles, prevents light leakage, maintains luminance, and simplifies manufacturing, enhancing aesthetic appeal and reducing production energy.
Implementation Method 1
a microlens disposed on the light-emitting part
Implementation Method 2
a light-blocking pattern on a surface of the microlens
Data Source
AI summary
A display apparatus according to one embodiment of the present specification includes a substrate including a display area displaying a screen and a non-display area around the display area, a plurality of pixels disposed in the display area, a microlens disposed on the plurality of pixels on the substrate, and a light-blocking pattern on a surface of the microlens, wherein the plurality of pixels each include a plurality of sub-pixels, the microlens is disposed in each of the plurality of sub-pixels, the plurality of sub-pixels of the pixel are disposed in a first direction, and the pixels are repeatedly disposed in the first direction and a second direction intersecting the first direction.