OLED Burn-in Prevention via Dynamic Image Shifting in HMDs
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Solution Overview
Problem
Head-mounted displays (HMDs) using organic light emitting diodes (OLEDs) suffer from deterioration over time, particularly burn-in, due to prolonged usage, which affects the immersive experience and image quality.
Innovation Solution
An image generation apparatus and system that includes a display section with OLEDs and a lens, which enlarges and corrects images to account for distortion caused by the lens, shifting the image display to prevent concentrated brightness and reduce OLED deterioration, thereby suppressing burn-in and maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If OLED display elements are used in head-mounted displays, then light weight and fast response speed are achieved, but significant deterioration and burn-in occur over time
Solution Approach 1:
The patent applies dynamics by making the image display position variable rather than fixed. The display position is dynamically adjusted according to the user's gaze direction, causing the image to shift between different OLED elements. This dynamic movement prevents any single OLED from being continuously stressed by the same bright image, thereby suppressing burn-in and extending display element durability while maintaining fast response characteristics
Solution Approach 2:
The patent changes the parameter of display position based on gaze direction detection. By detecting where the user is looking and adjusting the display position accordingly, the system redistributes the luminance stress across different OLED elements. This parameter change strategy prevents concentrated stress on specific elements, addressing the durability issue without compromising the fast response speed of OLEDs
2Stability of the object's composition
If the image is displayed at a fixed position on the OLED display section, then image stability is maintained, but concentrated brightness causes OLED deterioration and burn-in
Solution Approach 1:
The system transitions from a static fixed display position to a dynamic position that changes with gaze direction. This dynamic adjustment ensures that even though the image content remains stable for the user, the physical display position on the OLED shifts, distributing luminance stress and preventing burn-in while maintaining visual stability
Solution Approach 2:
The patent implements feedback by detecting the user's gaze direction and using this information to adjust the display position. This closed-loop system continuously monitors user attention and adapts the display position accordingly, preventing concentrated brightness on the same OLED elements while maintaining a stable and comfortable viewing experience
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 reduces OLED deterioration and prevents burn-in, enhancing the longevity and quality of the display while maintaining a high-resolution, immersive experience for users.
Implementation Method 1
The lens enlarges an image displayed on the display section and presents the enlarged image to a user
Implementation Method 2
The display section includes organic light emitting diodes
Data Source
AI summary
An HMD includes a display section and a lens. The display section includes organic light emitting diodes (OLEDs). The lens enlarges an image displayed on the display section and presents the enlarged image to a user. A PC generates an image of a virtual space. The PC generates an image to be displayed on the display section by correcting an image obtained by shifting the generated virtual space image according to distortion caused by the lens.