Microlens Display Panel Layout for Under-Panel Light Sensing
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Solution Overview
Problem
Existing display apparatuses, particularly those in vehicles, face challenges in managing viewing angles and privacy while maintaining aesthetic appeal and efficient light transmission without requiring through-holes.
Innovation Solution
A display apparatus design that integrates a light-receiving sensor beneath the panel with transmissive areas and microlenses to focus external light, eliminating the need for through-holes and allowing flexible sensor placement, while maintaining panel integrity and enhancing viewing angle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a through-hole is formed in the display panel for light transmission, then light transmission to the sensor is enabled, but the panel integrity, aesthetics, and manufacturing complexity are degraded
Solution Approach 1:
A microlens is introduced as an intermediary optical element positioned between the external light source and the light-receiving sensor. The microlens focuses and guides light through the transmissive area of the display panel, enabling effective light transmission without requiring through-holes that would compromise panel integrity or aesthetics
Solution Approach 2:
The display panel is designed with localized transmissive areas positioned between adjacent pixels where light transmission is required, while the remaining areas maintain full display functionality. This localized approach allows light to reach the sensor without compromising the overall panel structure or visual appearance
2Illumination intensity
If the light-receiving sensor is placed in the display area, then light transmission efficiency is improved, but the circuit component arrangement and manufacturing process are complicated
Solution Approach 1:
The display panel is segmented into distinct functional zones: display areas containing pixels and circuit components, and transmissive areas positioned between adjacent pixels. This segmentation allows the light-receiving sensor to be placed in the display area with light access through dedicated transmissive zones, without requiring changes to the overall manufacturing process or circuit component arrangement
3Illumination intensity
If transmissive areas are created between adjacent pixels, then light throughput is increased, but the display area and pixel density are reduced
Solution Approach 1:
Transmissive areas are introduced as localized transparent regions positioned between adjacent pixels rather than across the entire display area. These small, strategically placed transmissive zones provide sufficient light throughput for sensor operation while minimizing impact on the overall display area and pixel density
Solution Approach 2:
Instead of creating large transmissive areas that would significantly reduce display area, small transmissive regions are introduced at specific locations between pixels. This partial approach provides just enough light transmission capability without excessive loss of display area, achieving a balanced compromise
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 design improves manufacturability, durability, and aesthetics while increasing light throughput and enabling privacy-focused functions without altering circuit component arrangements.
Implementation Method 1
a first microlens in the transmissive area to focus external light onto the sensor
Implementation Method 2
A second microlens is positioned over each subpixel to control the emission direction of light
Data Source
AI summary
A display apparatus according to one embodiment of the present specification includes a substrate including a display area including a plurality of pixels and a transmissive area between adjacent plurality of pixels, and a non-display area surrounding the display area. A thin film transistor is on the substrate, with a first protective layer on the thin film transistor. A connection electrode electrically connected to the thin film transistor is on the first protective layer, a second protective layer on the connection electrode. A light-emitting part is on the second protective layer, and a first microlens is on the light-emitting part. The first microlens is disposed in the transmissive area.