Vehicle OLED Display Dynamic Boundary Movement
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Solution Overview
Problem
OLED panels in vehicle displays are prone to degradation and luminance differences, particularly in boundary areas, which are exacerbated by temperature variations and operational modes.
Innovation Solution
A display apparatus with an OLED panel comprising public and privacy pixels, controlled by a signal processing device that adjusts image division, moves boundary areas, and performs compensation modes to reduce degradation and luminance differences, using temperature detectors and motor drivers to adjust panel height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If OLED panel is used for vehicle display, then response time is improved, but degradation and luminance difference occur
Solution Approach 1:
The patent implements a dynamic boundary movement mechanism where the boundary area between public and privacy regions is sequentially moved to different positions. This dynamic redistribution prevents static boundary areas from experiencing continuous high luminance stress, thereby reducing degradation while maintaining the OLED panel's fast response time characteristics.
Solution Approach 2:
The patent changes the operational parameters by implementing degradation compensation modes that adjust luminance levels in boundary areas. When degradation is detected, the system modifies the luminance parameters in affected regions to compensate for the degradation, thereby extending the display's reliable operation period while preserving the OLED's rapid response capabilities.
2Ease of manufacture
If boundary area is fixed in OLED panel, then manufacturing is simplified, but luminance difference and degradation increase
Solution Approach 1:
The patent transforms the static boundary area into a dynamic element that is sequentially moved to different positions. This dynamic approach maintains manufacturing simplicity while achieving luminance uniformity by preventing any single boundary location from experiencing continuous high stress, thus distributing the luminance load across multiple areas over time.
3Illumination intensity
If public area is enlarged for better visibility, then viewing angle is improved, but privacy area is reduced
Solution Approach 1:
The patent implements periodic switching between different boundary positions, allowing the public area to be enlarged at certain times while the privacy area is protected at other times. This periodic redistribution enables the system to optimize viewing angle when needed while preserving privacy area when required, achieving both goals through time-based modulation rather than spatial compromise.
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 panel degradation and luminance differences by dynamically adjusting pixel areas and panel height, ensuring adaptive compensation based on temperature and operational modes.
Implementation Method 1
a display including an organic light emitting diode (OLED) panel comprising a public pixel and a privacy pixel
Data Source
Figure 1A
Figure 1B
Figure 1C~2
AI summary
A display apparatus for a vehicle is disclosed. A display apparatus for a vehicle according to an embodiment of the present comprises: a display including an organic light emitting diode (OLED) panel comprising a public pixel and a privacy pixel; and a signal processing device configured to output an image signal to the display, wherein the signal processing device is configured to: divide and display an image into a public area based on the public pixel and a privacy area based on the privacy pixel; and sequentially move a boundary area between the public area and the privacy area. Accordingly, it is possible to reduce degradation of a boundary area of the OLED panel, where a viewing angle is adjustable.