Display Panel Interconnection Layer for Under-Screen Camera Color Shift
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Solution Overview
Problem
Existing under-screen camera technologies for electronic devices, such as mobile phones and tablets, suffer from color shift issues, particularly a greenish tone, in the region corresponding to the camera, which affects the display effect.
Innovation Solution
A display panel design that includes a driving backplate with a light-transmitting region and a driving region, featuring a multi-layered interconnection layer with specific arrangements of lead layers, interconnection holes, and light-emitting devices to minimize parasitic capacitance and ensure consistent turn-on times for light-emitting devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If under-screen camera technology is used to eliminate hole-punch, then screen-to-body ratio is improved, but color shift occurs in the camera region
Solution Approach 1:
The patent applies local quality by creating different interconnection structures for different regions: the light-transmitting region uses a specific interconnection pattern with controlled lead lengths, while the driving region uses a different pattern. This regional differentiation allows the light-transmitting region to maintain color consistency while enabling the under-screen camera function, thus improving screen-to-body ratio without sacrificing display quality.
Solution Approach 2:
The patent changes physical parameters by controlling the length of leads connecting to light-emitting devices in the light-transmitting region. By adjusting lead lengths to be substantially equal, the patent balances parasitic capacitance values, which compensates for the color shift issue and maintains consistent turn-on times across different regions, thereby preserving display effect quality while enabling hole-punch elimination.
2Ease of manufacture
If lead lengths are equalized to balance parasitic capacitance, then color shift is reduced, but interconnection layer complexity increases
Solution Approach 1:
The patent segments the interconnection layer into distinct regions: an interconnection region with first interconnection holes and leads for the light-transmitting area, and a wiring region with second interconnection holes for the driving area. This segmentation allows independent optimization of each region, enabling precise control of lead lengths in the light-transmitting region to balance parasitic capacitance without overly complicating the overall structure.
Solution Approach 2:
The patent resolves the complexity issue by transitioning to a multi-layer interconnection structure with leads extending in different directions and multiple interconnection holes at different positions. This dimensional approach allows leads to be routed optimally to achieve equal lengths while maintaining a manageable layout through vertical stacking and horizontal distribution across multiple layers.
Data Source
AI summary
The present disclosure is related to a display panel, a display device and a terminal device. The display panel includes a driving backplate, an interconnection layer and a light-emitting layer. The driving backplate has a light-transmitting region and a driving region. The interconnection layer includes lead layers. Each of the lead layers includes leads which are mutually apart from each other. Any one of the plurality of leads is connected with one of t first interconnection holes and one of second interconnection holes. Any one of the first light-emitting devices is connected to one of the second interconnection holes.