UDC Display Panel Layout for Uniform Thickness and Light Transmittance
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Solution Overview
Problem
Medium-sized and large-sized display products lack an effective implementation of Under Display Camera (UDC) technology due to issues with light transmittance and uniform thickness, leading to suboptimal display quality and the need for external cameras.
Innovation Solution
A display panel design featuring a UDC region with light-transmissible substrates and spacer rings in the transition area to ensure uniform thickness and high transmittance, preventing the yellowing phenomenon and allowing for the integration of UDCs without compromising display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a hole is punched in the display area to implement UDC, then the screen-to-body ratio is reduced, but the display quality and visual effect deteriorate
Solution Approach 1:
The patent moves the UDC from the display area (2D plane) to the peripheral area (different spatial dimension), specifically locating it in the peripheral area between the display area and package region. This dimensional relocation allows the camera to be positioned outside the main display aperture, maintaining full screen-to-body ratio while enabling UDC functionality.
Solution Approach 2:
The display panel is segmented into distinct functional zones: display area, peripheral area with package region, and UDC region in the peripheral area. The transition area is further divided into first and second transition regions with different spacer ring configurations. This segmentation allows each region to be optimized for its specific function while maintaining overall system performance.
2Manufacturing precision
If the cell thickness is not uniform in the UDC region, then the manufacturing process is simplified, but the yellowing phenomenon occurs and display quality deteriorates
Solution Approach 1:
Spacer rings are introduced as intermediary structures in the transition area to mediate between the UDC region and the rest of the display panel. These spacer rings, composed of multiple spaced-apart spacers, serve as mediators that ensure uniform cell thickness in the UDC region while allowing the camera module to be integrated in the peripheral area. The spacer rings prevent direct contact between incompatible structures and maintain consistent thickness throughout.
Solution Approach 2:
Different spacer ring configurations are applied to different transition regions: the first transition region (adjacent to UDC region) uses first spacer rings with first spacers, while the second transition region uses second spacer rings with second spacers. This local differentiation allows optimized cell thickness control in each specific zone, preventing yellowing in the UDC region while maintaining display quality in other areas.
3Illumination intensity
If external independent cameras are used for medium-sized and large-sized display products, then the UDC implementation is avoided, but the screen-to-body ratio is reduced and display quality is affected
Solution Approach 1:
The patent merges the UDC functionality with the display panel structure by integrating the camera module directly into the peripheral area of the display panel. This merging eliminates the need for separate external cameras, achieving both high screen-to-body ratio and full display quality while enabling UDC functionality for medium-sized and large-sized display products.
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 high transmittance and sufficient light collection for UDCs in medium-sized and large-sized display products, preventing the yellowing phenomenon and ensuring optimal display quality by maintaining uniform cell thickness and light transmission.
Implementation Method 1
in the UDC region, the opposite substrate and the array substrate are both light-transmissible areas
Data Source
AI summary
A display panel and a display device are provided, and relate to the field of displaying. The display panel includes a display area and a peripheral area located at a periphery of the display area. The peripheral area includes a package region and an UDC region located between the display area and the package region. The display panel further includes a transition area surrounding the UDC region, and an opposite substrate and an array substrate arranged opposite to each other. In the UDC region, the opposite substrate and the array substrate are both light-transmissible areas; in the transition area, at least one spacer ring surrounding the UDC region is arranged on the opposite substrate, and each spacer ring includes a plurality of spacers that are spaced apart from each other. The technical solutions of the present disclosure can implement UDCs for the medium-sized display product and the large-sized display product.