OLED Touch Electrode Structure for Extended Service Life
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Solution Overview
Problem
OLED panels used in light fixtures have a short service life and lack satisfactory touch functionality, limiting their application in illumination devices.
Innovation Solution
An illumination device incorporating an OLED panel with an electrode structure that provides touch functionality and serves as a package structure to enhance the service life, featuring a light-emitting layer with a width greater than half of the touch electrode, and a control module connected to the OLED panel and touch electrodes for controlling the light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If OLED panels are used as light sources in light fixtures, then the appearance and design can be varied, but the service life is short
Solution Approach 1:
The patent combines the OLED panel with a touch-sensitive electrode structure and packaging layer into an integrated assembly. The OLED panel is merged with the electrode structure such that the electrode structure serves dual purposes: enabling touch functionality and providing protective packaging, thereby extending service life while maintaining design versatility.
Solution Approach 2:
The electrode structure is designed to perform multiple functions simultaneously: it serves as the touch-sensitive interface for user interaction, provides structural support, and acts as a protective packaging layer for the OLED panel. This multi-functionality allows the system to maintain design flexibility while extending the operational life of the OLED panel.
2Reliability
If existing light fixtures using OLED panels are designed, then they are adequate for intended purposes, but they lack satisfactory touch functionality
Solution Approach 1:
The touch functionality is merged into the electrode structure that is already integrated with the OLED panel. The electrode structure includes conductive portions that function as touch-sensitive elements, allowing users to interact with the light fixture by touching the surface, thereby adding ease of operation without compromising reliability.
3Ease of operation
If the electrode structure is overlaid on the OLED panel for touch functionality, then touch sensitivity is enabled, but the structure becomes more complex
Solution Approach 1:
The electrode structure is designed to be integrated with the OLED panel rather than being a separate overlay component. The conductive portions of the electrode structure are electrically connected to control circuitry, and the entire assembly serves as both the touch interface and structural element, reducing overall device complexity despite enabling touch sensitivity.
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 extends the service life of OLED panels and enhances touch sensitivity, enabling adjustable luminance and color temperature control through touch events, thus improving the overall performance of OLED-based light fixtures.
Implementation Method 1
The light-emitting layer includes a light-emitting material and is configured to emit a light beam
Implementation Method 2
The electrode structure includes a first touch electrode including at least two conductive portions, and the conductive portions of the first touch electrode are electrically connected to the other portions
Data Source
AI summary
An illumination device includes an OLED panel, an electrode structure, and a control module. The OLED panel includes a light-emitting layer configured to emit a light beam. The electrode structure is overlaid on the OLED panel. The electrode structure includes a first touch electrode including at least two conductive portions, and the conductive portions of the first touch electrode are electrically connected to the other conductive portions. The control module is electrically connected to the OLED panel and the first touch electrode. The light-emitting layer further includes a light-emitting material, and a width of the light-emitting material is greater than half of a width of the first touch electrode.