Magnetic Anti-Peeping Display Module for Brightness Retention
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Solution Overview
Problem
Existing display technologies struggle to maintain displaying brightness while switching between shared viewing and anti-peeping states, often resulting in brightness loss due to the presence of anti-peeping films on the front side of the display panel.
Innovation Solution
A display module design that includes an anti-peeping assembly with a substrate, driving circuit layers, and a base layer, featuring an anti-peeping channel with a first electromagnet and a black magnetic member that moves within the channel to control viewing angles, allowing conversion between shared and anti-peeping states without an anti-peeping film on the front side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an anti-peeping film layer is arranged on the front side of the display panel to achieve anti-peeping function, then the viewing angle control is improved, but the displaying brightness is reduced
Solution Approach 1:
The patent removes the anti-peeping film layer from the front side of the display panel and replaces it with a magnetic member that moves within a channel in the base layer. This extraction of the harmful element (film layer that blocks light) while maintaining the anti-peeping function through an alternative mechanism (magnetic member positioning) resolves the contradiction between viewing angle control and displaying brightness.
Solution Approach 2:
The patent replaces the optical-mechanical system (anti-peeping film layer that physically blocks light) with a magnetic control system (electromagnet and magnetic member). The electromagnet generates magnetic fields to control the movement of the magnetic member within the channel, which in turn controls light exposure. This substitution eliminates the need for a light-blocking film while achieving the same viewing angle control function.
2Adaptability or versatility
If PDLC liquid crystal is used to achieve conversion between shared viewing state and anti-peeping state, then the viewing angle switching is improved, but the brightness loss due to anti-peeping film layer remains
Solution Approach 1:
The patent extracts and removes the anti-peeping film layer that causes brightness loss, while retaining the PDLC liquid crystal technology for viewing angle switching. By combining the removal of the harmful film element with the retention of the functional switching mechanism, the patent achieves both viewing angle adaptability and maintained brightness.
Solution Approach 2:
The patent merges the advantages of different technologies: it combines the viewing angle switching capability of PDLC liquid crystal with the brightness-preserving design of a magnetic member positioning system. The magnetic member moves within a channel to control light exposure, while the PDLC liquid crystal provides the switching function, creating a hybrid system that achieves both adaptability and brightness maintenance.
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
Ensures displaying brightness is maintained during state conversion by controlling light exposure through magnetic member movement, enhancing display performance and flexibility in viewing angles.
Implementation Method 1
the first driving circuit layer is configured to apply a current signal to the first electromagnet
Implementation Method 2
the black magnetic member is configured to move, based on the current signal, in the anti-peeping channel to control a viewing angle of the display module
Implementation Method 3
the black magnetic member is configured to be repelled, in response to the first driving circuit layer applying a second current signal to the first electromagnet, by the first electromagnet to move toward a portion of the anti-peeping channel corresponding to the display assembly to block at least a portion of the light emitted from the pixel units
Data Source
AI summary
A display module includes: an anti-peeping assembly and a display assembly. The anti-peeping assembly includes a substrate, a first driving circuit layer and a base layer sequentially laminated. The display assembly includes a light-emitting layer disposed on a side of the base layer away from the substrate. The light-emitting layer includes a plurality of pixel units spaced apart from each other. The base layer is arranged with an anti-peeping channel at a position corresponding to a region between two adjacent pixel units, and the anti-peeping channel extends through the base layer and the display assembly. The anti-peeping assembly further includes a first electromagnet and a black magnetic member arranged in the anti-peeping channel. The first driving circuit layer applies a current signal to the first electromagnet to control the black magnetic member to move in the anti-peeping channel in order to control a viewing angle of the display module.