Touch Panel Protects OLED Light-Emitting Panel From Moisture
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Solution Overview
Problem
OLED panels used in light fixtures have a short service life and lack comprehensive functionality, making them unsatisfactory for various applications.
Innovation Solution
An illumination device is designed with a light-emitting panel, a touch panel, and a control module, where the touch panel provides touch functionality and serves as a package structure to increase the service life of the light-emitting panel by protecting it from moisture and enabling control over the light-emitting layer through touch signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If OLED panels are used as light source in light fixtures, then appearance design can be varied, but service life is short
Solution Approach 1:
The touch panel is designed to serve dual functions: as a user interface for controlling illumination parameters and as a protective package structure for the OLED panel. This multi-functionality allows the system to maintain design versatility while extending service life through protection, without requiring separate protective components that would add complexity.
2Adaptability or versatility
If touch panel is added to provide touch functionality, then control capability is enhanced, but device complexity increases
Solution Approach 1:
The touch panel performs multiple functions simultaneously: it serves as the user interface for touch control and as the protective package structure for the OLED panel. By combining these functions into a single component, the patent avoids adding extra protective layers or structures, thereby enhancing versatility without proportionally increasing device complexity.
3Measurement precision
If light-emitting material width is greater than half of touch electrode width, then luminance control precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies that the light-emitting material width should be greater than half but less than the full width of the touch electrode. This creates an optimized local relationship where the light-emitting area is sufficiently large for precise luminance control through touch position detection, while not being so large as to require extremely tight manufacturing tolerances. The asymmetric width relationship balances performance and manufacturability.
Data Source
AI summary
An illumination device including a light-emitting panel, a touch panel, and a control module is provided. The light-emitting panel includes a light-emitting layer configured to emit a light beam. The touch panel is overlaid on the light-emitting panel, and includes a first touch electrode. The control module is electrically connected to the light-emitting panel and the touch panel. The light-emitting layer further includes a light-emitting material, and the width of the light-emitting material is greater than half of the width of the first touch electrode.