Step-Shaped Light-Emitting Element Exiting Surfaces for Curved Display Visibility
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Solution Overview
Problem
Conventional display technologies face challenges in optimizing light-emitting element geometry to enhance image visibility, particularly in areas with varying curvature, where the angle of inclination of exiting surfaces affects light distribution and image clarity.
Innovation Solution
The display apparatus incorporates light-emitting elements with step-shaped exiting surfaces, where the angle of inclination varies based on the location within the display area, ensuring bilateral symmetry and equal lengths of exiting surfaces, which are parallel to the deposited surfaces, to improve light distribution and image visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-emitting elements have uniform flat exiting surfaces, then manufacturing is simple, but image visibility and light distribution are poor in curved display areas
Solution Approach 1:
The patent applies local quality by varying the exiting surface geometry of light-emitting elements according to their specific location on the curved display. Central area elements have different inclination angles compared to edge area elements, optimizing light distribution for each local region's curvature requirements
Solution Approach 2:
The patent changes the geometric parameters (inclination angles) of light-emitting element exiting surfaces based on position. Elements in different areas (central vs. edge) have different inclination angles matched to the local curvature, improving overall light distribution uniformity
2Illumination intensity
If light-emitting elements have varying inclination angles to match curvature, then image visibility improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the display area into distinct zones (central area and edge areas) with different curvature characteristics. Each segment is assigned light-emitting elements with inclination angles optimized for that specific zone, making the manufacturing process more manageable through regional standardization
3Illumination intensity
If exiting surfaces are inclined to follow curvature, then light distribution improves, but structural complexity increases
Solution Approach 1:
The patent applies partial action by inclining only the exiting surfaces of light-emitting elements while keeping other structural components relatively simple. This selective application of complexity achieves improved light distribution without requiring complete structural redesign of all display components
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 configuration enhances image visibility by ensuring consistent light emission direction and distribution across the display area, improving overall display performance.
Implementation Method 1
An OLED display has as rapid response speed and low power consumption and generates light based on recombination of electrons and holes in an organic emission layer
Data Source
AI summary
A display apparatus includes a base substrate layer, a circuit layer, a light-emitting element layer, and an encapsulation layer. The base substrate layer includes a display area. The circuit layer is on the base substrate layer and includes at least one transistor. The light-emitting element layer is connected to the circuit layer and includes at least one light-emitting element in the display area. The at least one light-emitting element has an exiting surface emitting light and a step shape. The encapsulation layer is on the light-emitting element layer.