Fingerprint Module Placement in Display Panel Non-Light-Emitting Areas
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Solution Overview
Problem
Existing display devices with fingerprint recognition functions require users to touch a fingerprint recognition module in a non-display area, degrading user experience and reducing the screen-to-body ratio, which goes against the trend of narrower bezels.
Innovation Solution
Integrating the fingerprint recognition module into the display area of the display panel by placing it on the encapsulation layer, ensuring its projection onto the array substrate is in a non-light-emitting area and maintaining a sufficient horizontal distance from light-emitting units to preserve the viewing angle and screen-to-body ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the fingerprint recognition module is disposed in the non-display area, then the fingerprint recognition function is achieved, but the screen-to-body ratio is reduced and user experience is degraded
Solution Approach 1:
The patent merges the fingerprint recognition module with the display area by positioning it in the non-light-emitting area between adjacent light-emitting units. This integration allows the fingerprint recognition function to be embedded within the display region, eliminating the need for separate non-display area placement and thereby increasing the screen-to-body ratio.
Solution Approach 2:
The patent utilizes the non-light-emitting area between adjacent light-emitting units as a specialized zone for fingerprint recognition. By assigning different functions to different local areas (light-emitting units for display, non-light-emitting areas for fingerprint recognition), the patent achieves multi-functionality without compromising the overall display quality or screen-to-body ratio.
2Area of stationary object
If the fingerprint recognition module is disposed in the display area, then the screen-to-body ratio is increased, but the viewing angle may be affected due to light blocking
Solution Approach 1:
The patent places the fingerprint recognition module specifically in the non-light-emitting area between adjacent light-emitting units, where it does not block the light emission paths. This localized positioning ensures that the display area maintains its light transmission characteristics and viewing angle performance while still accommodating the fingerprint recognition function.
Solution Approach 2:
The non-light-emitting area serves as an intermediary zone that accommodates the fingerprint recognition module without interfering with the light emission from adjacent light-emitting units. This intermediary positioning allows both functions (display and fingerprint recognition) to coexist without mutual interference, preserving the viewing angle.
3Area of stationary object
If the horizontal distance between the fingerprint recognition unit and light-emitting units is reduced, then the screen-to-body ratio is increased, but the viewing angle decreases
Solution Approach 1:
The patent utilizes the non-light-emitting area as a dedicated zone for fingerprint recognition, which naturally provides sufficient horizontal distance from adjacent light-emitting units. This localized placement in the non-light-emitting area ensures that the horizontal distance requirement for viewing angle is met while still achieving high screen-to-body ratio.
Solution Approach 2:
The patent positions the fingerprint recognition module in the horizontal dimension between light-emitting units rather than reducing vertical distances. By utilizing the horizontal space in the non-light-emitting area, the patent maintains adequate spacing for viewing angle while maximizing the screen-to-body ratio through efficient space utilization.
Data Source
AI summary
This application provides a display panel and a display device. The display panel includes an array substrate, an encapsulation layer and a fingerprint recognition module. The array substrate includes a first substrate and a plurality of light-emitting units on the first substrate. The encapsulation layer is disposed on top of the plurality of light-emitting units. The fingerprint recognition module is disposed on the encapsulation layer and includes at least one fingerprint recognition unit. The projection of the fingerprint recognition unit onto the array substrate is located in the non-light-emitting area of the first substrate. The non-light-emitting area is located between two adjacent light-emitting units.