Display Light Transmissive Regions Bezel-less Optical Integration
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Solution Overview
Problem
Display devices with thin or no bezels face challenges in accommodating optical devices, such as infrared sensors, which require adequate space for functionality, impacting image display and light transmittance.
Innovation Solution
A display device design featuring a first display area for image display and a second display area with light transmissive regions, where wires are optimized to reduce coverage and enhance light transmittance, allowing optical devices to be placed behind the display without compromising image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the bezel is made thinner or removed entirely to achieve bezel-less design, then the display area is increased and aesthetic appearance is improved, but adequate space for accommodating optical devices such as infrared sensors is lost
Solution Approach 1:
The patent relocates the optical device from the traditional bezel area to the rear side of the display panel, utilizing the z-dimension (depth) rather than the x-y plane. This allows the optical device to be positioned in a cavity formed by the substrate and cover plate, enabling bezel-less front design while maintaining functional space for the sensor through rear-side integration
2Adaptability or versatility
If optical devices are disposed behind the display area, then bezel-less design is achieved, but light transmittance is reduced and image display quality is compromised
Solution Approach 1:
The patent implements selective transparency by making only the specific region corresponding to the optical device transparent, while other regions maintain normal display functionality. This is achieved by selectively removing or thinning the substrate and cover plate in the optical device region, allowing infrared light to pass through to the sensor while maintaining structural integrity and normal display performance in non-transparent regions
Solution Approach 2:
The display panel is divided into distinct functional regions: transparent regions for optical device light transmission, normal display regions for image output, and structural support regions. This segmentation allows each region to be optimized for its specific function without compromising the others
3Reliability
If wires are disposed in the light transmissive region to maintain electrical connectivity, then device functionality is maintained, but light transmittance is blocked and reduced
Solution Approach 1:
The patent employs curved or bent wire configurations instead of straight lines to route electrical connections around the light transmissive region. The wires are shaped to follow curved paths that minimize overlap with the transparent area, allowing light to pass through the light transmissive region while maintaining electrical connectivity to the optical device through the curved conductor paths
Data Source
AI summary
An exemplary embodiment of the present invention provides a display device including a first display area having a plurality of first pixel regions and a second display area having both a plurality of second pixel regions and a plurality of light transmissive regions. The second display area includes a plurality of scan lines. The second pixel region includes a plurality of pixel electrodes and a voltage line disposed on a same layer as the pixel electrodes. The voltage line overlaps the scan line to be parallel therewith in the light transmissive region.