Under-Screen Camera Display Light-Blocking Member for Through-Hole Leakage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing under-screen camera display devices suffer from light leakage into the through hole of the backlight module, affecting both the shooting effect of the camera module and the display effect of the liquid crystal display panel, due to the use of a thick metal back plate and adhesive frame which block light and create a clear transition line.
Innovation Solution
A display device with a light-blocking member, comprising a first light-blocking portion with a hollow cylindrical structure and a second light-blocking portion extending from the display panel, fixed to the backlight module, to prevent light leakage into the through hole, and a light-shielding rod within the channel to enhance light isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thick metal back plate is used as a blocking wall to prevent light leakage, then light isolation is improved, but device complexity and manufacturing complexity increase due to the need for adhesive frames and light-shielding adhesive
Solution Approach 1:
The patent uses a thin metal back plate (thickness ≤ 0.1mm) instead of a thick blocking wall, combining it with a light-shielding film that has light-shielding particles dispersed in a transparent resin. This thin film structure replaces the need for thick metal plates and adhesive frames, reducing device complexity while maintaining light isolation effectiveness.
Solution Approach 2:
The light-shielding film is formed by dispersing light-shielding particles (such as titanium dioxide, zinc oxide, or carbon black) in a transparent resin, creating a composite material that provides both transparency and light-shielding properties. This composite structure achieves effective light isolation without requiring thick metal components or additional adhesive frames.
2Object-affected harmful factors
If a thick metal back plate is bent into the through hole as a blocking wall, then light leakage is prevented, but manufacturing precision requirements increase and the structure becomes more complex
Solution Approach 1:
The patent replaces the bent thick metal back plate with a thin light-shielding film that can be easily positioned and fixed in the through hole. The thin film structure (thickness ≤ 0.1mm) is more flexible and easier to assemble than a thick bent metal plate, reducing manufacturing precision requirements while maintaining light isolation functionality.
Solution Approach 2:
The light-shielding film is a simple, easy-to-manufacture component that can be readily replaced or adjusted during assembly. Unlike a precision-bent metal back plate, the thin film is inexpensive and easy to install, reducing both manufacturing complexity and precision requirements.
3Object-affected harmful factors
If adhesive frames and light-shielding adhesive are used to fill gaps, then light leakage is prevented, but the number of components increases and device complexity increases
Solution Approach 1:
The patent combines the light-shielding function and the gap-filling function into a single light-shielding film component. This film simultaneously prevents light leakage and fills the gap between the metal back plate and other components, eliminating the need for separate adhesive frames and light-shielding adhesive, thus reducing the number of components and device complexity.
Solution Approach 2:
The light-shielding film serves multiple functions: it blocks light from leaking into the through hole, fills the gap between components, and provides structural support. This multi-functional component replaces multiple separate components (adhesive frame, light-shielding adhesive), simplifying the overall device structure.
Data Source
AI summary
The display device includes a display panel, a backlight module, and a light-blocking member. The backlight module is formed with a through hole penetrating the backlight module, and the light-blocking member includes a channel corresponding to the through hole. The light-blocking member can isolate other components of the backlight module from the channel to prevent light in the backlight module from being irradiated into the channel, thereby solving the problem that the light leaks easily into the through hole of the backlight module in an existing under-screen camera display devices.