Curved-Edge Display Luminance Compensation for Uniform Brightness
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Solution Overview
Problem
Curved-edge OLED displays exhibit non-uniform luminance, leading to sub-optimal viewing experiences due to dimmer edges when viewed at sharp angles, compromising user experience in interpreting content and color accuracy.
Innovation Solution
A luminance manager is employed to receive indications of intended luminance and non-uniform characteristics, using compensation maps to determine and apply luminance modifications to pixels, enhancing luminance at curved edges to achieve uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the edges of the display are curved to increase the screen-to-body ratio, then the display area is improved, but the luminance uniformity deteriorates
Solution Approach 1:
The patent applies local quality by implementing region-specific luminance compensation. Different zones of the display (center vs. curved edges) are assigned different luminance characteristics through compensation maps. The curved edge regions receive enhanced luminance values to counteract the viewing angle effects, while the center region maintains normal luminance, creating locally optimized visual quality across different display areas.
Solution Approach 2:
The patent changes the luminance parameter dynamically based on spatial position and viewing angle. Compensation maps store and apply position-dependent luminance adjustment values that modify the intended luminance output. This parameter transformation converts the non-uniform luminance characteristic into a compensated uniform appearance by adjusting brightness values according to the specific location on the curved display surface.
2Manufacturing precision
If OLED display technology is used to enable curvature and vibrant colors, then the display quality is improved, but the viewing angle performance deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-calculating and storing compensation values in lookup tables and compensation maps before actual display operation. The system characterizes the specific curved display panel's luminance properties in advance, creates position-dependent compensation data, and stores this information for rapid retrieval during operation. This pre-computation approach enables real-time luminance correction without complex runtime calculations, maintaining both display quality and viewing angle performance.
Solution Approach 2:
The patent employs feedback mechanisms where the system continuously monitors the relationship between intended luminance values and actual perceived luminance across different viewing angles. The luminance manager uses this feedback information, stored in compensation maps, to adjust the drive signals sent to pixel circuits, ensuring that the actual display output matches the intended uniform luminance appearance regardless of viewing angle.
Data Source
AI summary
This document describes systems and techniques directed at compensating for non-uniform luminance in curved-edge displays. In aspects, a computing device having a curved-edge display and a luminance manager is configured to receive an indication of a luminance that is, or is intended to be, displayed by pixels of the curved-edge display. Responsive to and based on the received indication of the luminance and a non-uniform luminance, the luminance manager determines a luminance modification for the pixels of the curved-edge display. Based on the determined luminance modification, the luminance manager modifies the luminance that is displayed or modifies the intended luminance that is intended to be displayed by pixels of the curved-edge display effective to compensate for the non-uniform luminance.