Flexible Non-Rectangular Substrate Display for Curved Surfaces
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Solution Overview
Problem
Existing organic light-emitting display apparatuses face challenges in forming high-resolution full-color panels due to difficulties in separately forming light-emitting layers using metal masks, particularly with increasing substrate sizes, and have high power consumption when using white-light-emitting devices with color filters.
Innovation Solution
A display apparatus featuring a flexible non-rectangular substrate with a light-emitting apparatus formed in a matrix on the substrate, allowing for curved or spherical display surfaces, eliminating the need for fine metal masks and combining white-light-emitting devices with color filters to achieve high-resolution, low-power full-color displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If light-emitting layers are separately formed using metal masks, then full-color display is achieved, but manufacturing precision deteriorates with increasing substrate size
Solution Approach 1:
The patent transitions from planar substrate to a curved surface substrate, changing the geometric dimension of the display surface. This allows the light-emitting layers to be formed on a curved surface without requiring fine metal masks, as the curvature enables different formation methods while maintaining high precision even for large substrates
2Ease of manufacture
If white-light-emitting devices with color filters are used, then full-color display is achieved, but power consumption increases
Solution Approach 1:
The patent forms light-emitting layers with different colors (red, green, blue) at different locations on the curved surface substrate. Each light-emitting layer emits its characteristic color without requiring color filters, achieving full-color display while reducing power consumption by eliminating the light loss through color filter absorption
3Adaptability or versatility
If flexible substrates are bent to form curved surfaces, then design flexibility is improved, but structural stability deteriorates
Solution Approach 1:
The patent employs a curved surface substrate with controlled curvature radius, transforming the flexible substrate into a stable curved structure. The specific curvature radius is selected to maintain structural stability while preserving the flexibility needed for various display configurations in vehicle interiors
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 solution enables high-resolution, low-power consumption displays with flexible design capabilities, suitable for complex in-car display surfaces, enhancing display quality and reducing power usage while maintaining high image visibility across various viewing angles.
Implementation Method 1
Light-emitting devices (also referred to as EL devices or EL elements) utilizing electroluminescence (hereinafter referred to as EL)
Data Source
AI summary
A display apparatus with a novel structure is provided. The display apparatus includes a display surface, a flexible non-rectangular substrate over which part of the display surface is formed, and a light-emitting device formed over the flexible substrate. The light-emitting device includes pixel regions formed in a matrix. The display surface has a convex or concave region when part of the flexible non-rectangular substrate is bent. A novel light-emitting apparatus, a novel display apparatus, a novel input/output apparatus, or a novel semiconductor apparatus can be achieved. The display apparatus enables the degree of design flexibility of a display apparatus to be increased and design of the display apparatus to be improved.