Flexible OLED Display with Photochromic Backlight Absorption
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Solution Overview
Problem
Flexible OLED displays face significant contrast issues due to varying external ambient light, which affects the display's performance, especially in bright environments where external light interferes with the organic electroluminescent layer and thin film transistor layer.
Innovation Solution
A flexible OLED display is designed with a photochromic component on its second surface that changes color in response to ambient light intensity, completely absorbing external light by using a photochromic material layer supported by substrates and sealed to prevent damage, thereby improving contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If no photochromic component is used, then the device structure remains simple, but the display contrast deteriorates in bright environments due to external ambient light interference
Solution Approach 1:
The photochromic component is pre-installed on the back surface of the flexible substrate before the OLED display operates. When external ambient light exceeds a predetermined threshold, the photochromic material automatically undergoes photochemical reaction and changes its light transmittance in advance, preventing the ambient light from interfering with the display contrast. This preliminary protective action eliminates the need for real-time control systems while maintaining display quality.
2Illumination intensity
If a photochromic component is added to absorb external ambient light, then the display contrast improves, but the device complexity increases
Solution Approach 1:
The photochromic component is designed to automatically respond to external ambient light intensity without requiring external control systems. When the ambient light intensity exceeds a predetermined threshold, the photochromic material self-activates and changes its light transmittance through photochemical reaction, eliminating the need for sensors, controllers, or power supply systems. This self-service mechanism adds minimal structural complexity while effectively improving display contrast.
Solution Approach 2:
The photochromic component utilizes photochromic materials that change their optical properties (light transmittance and color) in response to light intensity. By selecting appropriate photochromic materials with specific absorption characteristics, the component can effectively absorb external ambient light across different wavelengths, improving display contrast without requiring complex multi-layer structures or active control mechanisms.
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 effectively eliminates the impact of external ambient light on the display, enhancing contrast by adjusting light transmittance based on ambient light conditions, ensuring improved image quality across different environments.
Implementation Method 1
a photochromic component arranged on the second surface, wherein the photochromic component generates different color changes according to an intensity of an external ambient light so as to completely absorb the external ambient light
Data Source
AI summary
The present disclosure discloses a flexible OLED display including: a flexible substrate, including a first surface and a second surface opposite to each other; an organic electroluminescent component arranged on the first surface; and a photochromic component arranged on the second surface, wherein the photochromic component generates different color changes according to an intensity of an external ambient light so as to completely absorb the external ambient light. The present disclosure further discloses a manufacturing method of a flexible OLED display. The flexible OLED display and the manufacturing method thereof according to the present disclosure can eliminate the influence of the external ambient light on the display and improve the display contrast.