Display Device With Asymmetric Light-Blocking Openings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges in reducing side visibility to prevent personal information exposure in public and enhancing display quality, particularly in mobile electronic devices with bendable structures.
Innovation Solution
A display device design featuring a substrate with first and second display areas, each containing display elements, touch conductive patterns, a touch insulating layer with protrusions, and light-blocking layers defining different-sized openings to control viewing angles, combined with color filters to enhance privacy and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-blocking layer with uniform openings is used, then manufacturing is simple, but side visibility cannot be reduced effectively
Solution Approach 1:
The light-blocking layer is designed with non-uniform opening areas where different regions have different opening sizes. Specifically, the opening area in the first display area is smaller than the opening area in the second display area, creating local variations in light transmission properties to reduce side visibility in specific viewing directions while maintaining display quality.
Solution Approach 2:
The light-blocking layer introduces asymmetric opening configurations where the opening area in the first display area differs from the opening area in the second display area. This asymmetric design creates different light transmission characteristics for different viewing angles, effectively reducing side visibility while maintaining front viewing quality.
2Object-affected harmful factors
If the opening area in the first display area is made smaller, then side visibility is reduced, but light transmission is compromised
Solution Approach 1:
The light-blocking layer implements local quality differentiation by having smaller opening areas in the first display area and larger opening areas in the second display area. This local variation allows the first area to reduce side visibility while the second area compensates for light transmission, maintaining overall display brightness and quality.
Solution Approach 2:
The asymmetric opening configuration balances privacy protection and light transmission by distributing different opening sizes across different display areas. The smaller openings in the first area provide privacy by reducing side visibility, while the larger openings in the second area ensure sufficient light transmission for display quality.
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 design effectively reduces side visibility while maintaining high display quality by controlling viewing angles and preventing personal information exposure, especially in mobile electronic devices with bendable displays.
Implementation Method 1
a first light-blocking layer disposed on the recess of the touch insulating layer and defining a first opening and a second opening therein
Implementation Method 2
a color filter layer disposed on the touch insulating layer and the first light-blocking layer and including a first color filter and a second color filter
Data Source
AI summary
A display device includes: a first display element in a first display area; a second display element in a second display area and configured to emit light of the same wavelength as the first display element; a first touch conductive pattern; a touch insulating layer covering the first touch conductive pattern, including protrusions, and providing a recess defined by the protrusions, the protrusions overlapping a first emission area of the first display element and a second emission area of the second display element, respectively; and a first light-blocking layer on the recess of the touch insulating layer and defining a first opening and a second opening, the first opening overlapping the first emission area, and the second opening overlapping the second emission area. An area of the first opening of the first light-blocking layer is less than an area of the second opening of the first light-blocking layer.