OLED Display Panel Layout for Directional Window Reflection Reduction
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Solution Overview
Problem
Display devices in vehicles often cause safety issues due to light reflection from the front or side window glasses, obstructing the driver's view and potentially leading to safety problems while driving.
Innovation Solution
A display panel designed to emit light in a specific direction, using a substrate with organic light-emitting diodes and light-blocking lines to minimize reflection on the vehicle's windows, ensuring that light is directed away from the driver's line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a display device is provided inside a vehicle to display images to users, then the usability and information display capability are improved, but light reflection from the display may obstruct the driver's vision and cause safety problems
Solution Approach 1:
The patent applies local quality by creating directionally selective light emission properties at specific locations and angles. The display device emits light primarily toward the driver's seat area while minimizing light emission toward the front window, creating localized directional control that resolves the contradiction between providing display functionality and preventing visual obstruction
Solution Approach 2:
The patent introduces angular/directional control as an additional dimension to light emission. Instead of uniform omnidirectional emission, the display controls light distribution across different angular dimensions, directing light away from the front window direction while maintaining visibility in the driver's seating area, thereby eliminating the harmful reflection effect
2Object-affected harmful factors
If light-blocking lines are added to control light direction, then the harmful reflection is reduced, but the device complexity increases
Solution Approach 1:
The patent changes the optical parameters of existing display components, specifically the emission angle and intensity distribution characteristics. By adjusting these parameters through the light-blocking line structure, the system achieves directional control without fundamentally changing the core display technology, thus managing complexity while effectively reducing harmful reflections
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 display panel effectively reduces light reflection on the vehicle's windows, enhancing driver safety by ensuring that the light emitted is directed towards the intended viewing area without obstructing the driver's view.
Implementation Method 1
a display element layer including a first organic light-emitting diode having a first emission area, a second organic light-emitting diode having a second emission area, and a third organic light-emitting diode having a third emission area
Implementation Method 2
a plurality of first light-blocking lines disposed on the encapsulation layer and extending in the first direction, the plurality of first light-blocking lines overlapping the first emission area, the second emission area, and the third emission area
Data Source
AI summary
A display panel includes: a substrate; a display element layer including a first organic light-emitting diode having a first emission area, a second organic light-emitting diode having a second emission area, and a third organic light-emitting diode having a third emission area, the first emission area having a long side extending in a first direction and a short side extending in a second direction intersecting the first direction; an encapsulation layer disposed on the display element layer; and a plurality of first light-blocking lines disposed on the encapsulation layer and extending in the first direction, the plurality of first light-blocking lines overlapping the first emission area, the second emission area, and the third emission area.