Multi-view OLED Display Using Tilted Subpixel Groups
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Solution Overview
Problem
Conventional display devices cannot simultaneously display multiple images in different directions effectively, leading to space and cost inefficiencies when separate displays are used to meet conflicting viewing requirements, such as navigation data and entertainment for multiple users.
Innovation Solution
A multi-view display device with first to third subpixel groups and corresponding bank patterns on an array substrate, along with color filters on a separate encapsulation substrate, allows for the display of multiple images by directing light emissions from subpixels to specific viewing angles, enabling multiple views from a single panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate displays are used to provide different information to different users, then each user can view different information simultaneously, but space requirements increase and cost increases
Solution Approach 1:
The display panel is segmented into multiple subpixel groups (first, second, and third subpixel groups) that can independently display different images. Each subpixel group corresponds to specific viewing directions, allowing multiple views to be displayed simultaneously on a single panel without requiring separate display devices.
Solution Approach 2:
The invention utilizes the angular dimension by tilting subpixel groups at different angles relative to the normal line of the display panel. This allows light to be emitted in different directions, creating multiple viewing angles from a single panel and enabling multiple users to view different content simultaneously without occupying additional spatial area.
2Adaptability or versatility
If separate displays are used to provide different information to different users, then each user can view different information simultaneously, but manufacturing cost increases
Solution Approach 1:
Multiple display functions are merged into a single display panel by integrating multiple subpixel groups with different tilting angles into one unified structure. This eliminates the need to manufacture and assemble multiple separate display devices, thereby reducing production costs while maintaining multi-view functionality.
Solution Approach 2:
A single display panel is designed to perform multiple functions by incorporating subpixel groups that can display different images to different users simultaneously. This multi-functional design replaces the need for multiple dedicated displays, reducing overall system cost while providing versatile viewing options.
3Ease of manufacture
If conventional display structures are used, then manufacturing is simple, but luminance uniformity across multiple views deteriorates
Solution Approach 1:
Different regions of the display panel (specifically different subpixel groups) are given different local orientations by tilting them at specific angles. This local quality variation in the tilting angles of subpixel groups enables light to be directed toward different viewing angles while maintaining uniform luminance intensity across all views, resolving the contradiction between manufacturing simplicity and luminance uniformity.
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 enables efficient display of different images to multiple users from a single device, reducing space and cost while maintaining uniform high luminance across all views.
Implementation Method 1
The OLED device is a self-luminescent element that emits light through an LED, and the LED emits light through an organic electroluminescence phenomenon
Data Source
Figure 1~2A
Figure 2B~3
Figure 4
AI summary
Disclosed is a multi-view display device, in which, due to the arrangement structure of subpixels and color filters of an OLED device, the gaps between the subpixels, and the arrangement structure of black matrices, the first-first view image, the second-first view image, and the third-first view image of red light are respectively displayed by the first to third red subpixels of the first to third subpixel groups, the first-second view image, the second-second view image, and the third-second view image of green light are respectively displayed by the first to third green subpixels of the first to third subpixel groups, and the first-third view image, the second-third view image, and the third-third view image of blue light are respectively displayed by the first to third blue subpixels of the first to third subpixel groups.