OLED Display Segments for Multi-Image Versatility
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Solution Overview
Problem
Current display devices, such as those using organic light emitting diodes (OLEDs), are limited to displaying only one predetermined image, lacking the capability to selectively display multiple images.
Innovation Solution
A display device comprising a display unit with multiple segments, each containing organic light emitting layers emitting different colors, and a control unit that selectively drives these segments to emit light of various colors, allowing for the display of multiple images by switching between different light colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display device uses a single OLED structure, then the device is simple in structure, but it can only display one predetermined image
Solution Approach 1:
The display unit is divided into multiple segments, where each segment contains organic light emitting layers that can emit different colors of light. By selectively controlling which segments emit light, the display device can display multiple different images using a single OLED structure, thereby improving adaptability without significantly increasing device complexity
Solution Approach 2:
The single OLED structure is designed to perform multiple functions by incorporating multiple organic light emitting layers with different emission colors in each segment. This allows the same physical structure to display various images by controlling which light emitting layers are activated, achieving multi-functionality without requiring multiple separate display units
2Adaptability or versatility
If multiple organic light emitting layers are added to enable multiple image display, then the versatility is improved, but the manufacturing complexity increases
Solution Approach 1:
The OLED structure is segmented into multiple light emitting layers within each segment, where each layer is designed to emit a specific color. This segmentation allows for systematic fabrication processes where layers can be deposited in a controlled sequence, making the manufacturing of multi-layer structures more manageable despite the increased complexity
Solution Approach 2:
The invention utilizes changes in electrical parameters (voltage, current) to control which organic light emitting layers are activated. By adjusting these parameters, different combinations of light emitting layers can be controlled to display different images, enabling versatile image selection capability through simple electrical control rather than complex mechanical or structural changes during manufacturing
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
Enables the selective display of multiple predetermined images by controlling the emission of light from segments, enhancing the versatility and functionality of display devices like illuminated emergency exit signs and traffic signs.
Implementation Method 1
Each of the plurality of segments includes a plurality of organic light emitting layers to emit light of mutually different colors
Data Source
AI summary
According to one embodiment, a display device, includes: a display unit and a control unit. The display unit has a plurality of segments. Each of the plurality of segments includes a plurality of organic light emitting layers to emit light of mutually different colors. The plurality of segments forms one of a plurality types of images by changing the colors of the emitted light from the plurality of segments. The control unit drives each of the plurality of segments of the display unit to emit light.