Flexible Display Support Plate Light-Transmissive Hole
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Solution Overview
Problem
Flexible display panels with non-light-transmissive support members restrict the use of under-screen cameras due to inadequate light transmission, leading to poor camera performance and appearance issues like impressions and indentations.
Innovation Solution
A display module with a flexible display panel, a support plate featuring a light-transmissive hole filled with a transparent support structure, and a light-shielding portion on the sidewall of the hole, which includes a reflection-reducing layer and a transparent protective layer to enhance light transmittance and reduce impression problems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a non-light-transmissive support member is used to support the flexible display panel, then the structural support is improved, but the light transmittance deteriorates
Solution Approach 1:
The support plate is segmented by creating a light-transmissive hole in the region where the camera is located, allowing light to pass through while maintaining support in other areas. This segmentation resolves the contradiction by dividing the support plate into light-blocking regions (for structural support) and light-transmissive regions (for camera function).
Solution Approach 2:
The support plate has different optical properties in different regions: it is light-transmissive in the camera region and light-blocking in other regions. This local differentiation allows the support structure to provide mechanical support where needed while allowing light transmission where the camera requires it.
2Illumination intensity
If a light-transmissive hole is created in the support plate, then the light transmittance is improved, but the structural strength deteriorates
Solution Approach 1:
A flexible support film is used to fill the light-transmissive hole, providing both light transmission and mechanical support. The flexible nature of this film allows it to maintain structural integrity while allowing light to pass through, resolving the contradiction between light transmittance and structural strength.
3Reliability
If the flexible display panel is pressed during assembly, then the bonding is improved, but impression and indentation problems occur in the light-transmissive hole region
Solution Approach 1:
The flexible support film is placed in advance in the light-transmissive hole region to cushion and distribute the pressing force during assembly. This prevents excessive localized pressure that would cause impressions and indentations, while still allowing adequate bonding pressure to be applied to other areas.
4Area of stationary object
If light-emitting devices are disposed close to the light-transmissive hole, then the display area is improved, but light leakage occurs affecting camera performance
Solution Approach 1:
A light-shielding layer is introduced as an intermediary between the light-emitting devices and the light-transmissive hole. This layer blocks light from the display devices from leaking into the camera region, allowing the display devices to be positioned close to the hole for maximum display area without causing light interference.
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 allows for improved light transmittance through the support structure, meeting camera requirements while reducing impression issues, thus enhancing camera performance and image quality.
Implementation Method 1
The transparent support structure is filled in the light-transmissive hole, and an orthographic projection of the transparent support structure on the display surface at least partially overlaps with the light-transmissive region
Implementation Method 2
The light-shielding portion disposed on at least part of a sidewall of the light-transmissive hole
Implementation Method 3
the display module further includes a reflection-reducing layer. The reflection-reducing layer is located in the light-transmissive hole
Data Source
AI summary
A display module includes a flexible display panel, a support plate, a transparent support structure and a light-shielding portion. The flexible display panel includes a display surface, and the display surface includes a light-transmissive region. The support plate is disposed on a side of the flexible display panel facing away from the display surface, and the support plate has a light-transmissive hole. The transparent support structure is filled in the light-transmissive hole, and an orthographic projection of the transparent support structure on the display surface at least partially overlaps with the light-transmissive region. The light-shielding portion disposed on at least part of a sidewall of the light-transmissive hole.