Light Guide Structure with Adjustable Fiber Bundle Scattering
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Solution Overview
Problem
Current anti-peeping display devices, such as ATMs and electronic products, face challenges in switching between wide and narrow viewing angles without damaging the screen or incurring high costs, as conventional anti-peeping films are easily damaged and costly, and fail to effectively combine wide viewing angle and anti-peeping functions.
Innovation Solution
A light guide structure comprising substrates with through holes and fiber bundles, where the distance between substrates is adjustable, allowing for switching between narrow and wide viewing angles by altering the scattering state of the fiber bundle ends, with a distance adjusting device like an electric lifting structure to control the viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-peeping film is attached to the display screen, then anti-peeping function is achieved, but the film is easily damaged and costly
Solution Approach 1:
The patent extracts the anti-peeping function from a separate film layer and integrates it into the display device's internal structure through a light guide plate with controllable light scattering regions. This eliminates the need for a separate anti-peeping film that is prone to damage, while maintaining the anti-peeping effect through structural design rather than a fragile coating.
Solution Approach 2:
The patent combines the anti-peeping function with the display device's internal light guide structure. The light guide plate integrates both display illumination and anti-peeping control in a single component, eliminating the need for separate anti-peeping films and reducing the risk of damage from multiple layers.
2Reliability
If anti-peeping film is used, then narrow viewing angle is achieved, but wide viewing angle sharing is not possible
Solution Approach 1:
The patent implements a dynamic light guide plate with controllable light scattering regions that can switch between different states. The light scattering regions can be activated or deactivated to change the viewing angle characteristics, allowing the display to adapt between narrow viewing angle (anti-peeping mode) and wide viewing angle (sharing mode) as needed.
Solution Approach 2:
The patent changes the optical parameters of the light guide plate by controlling the light scattering regions. By adjusting the scattering properties dynamically, the display can transform between narrow and wide viewing angles, providing versatility in different usage scenarios without compromising the anti-peeping function when required.
3Adaptability or versatility
If anti-peeping film is repeatedly mounted and removed, then viewing angle switching is achieved, but operation is inconvenient and screen may be damaged
Solution Approach 1:
The patent merges the viewing angle control function into the display device's internal light guide structure. The light scattering regions are integrated within the display, allowing viewing angle switching through internal control mechanisms rather than requiring external film manipulation, greatly improving operational convenience.
Solution Approach 2:
The patent implements self-service viewing angle control through the light guide plate's integrated scattering regions. The system can automatically or manually switch between viewing modes through internal mechanisms, eliminating the need for user intervention to mount or remove films, and preventing screen damage from repeated handling.
4Reliability
If conventional anti-peeping film is used, then anti-peeping function is achieved, but production cost is high
Solution Approach 1:
The patent combines the anti-peeping function with the display device's existing light guide plate structure. By utilizing the light guide plate for both illumination and anti-peeping control, the patent eliminates the need for separate anti-peeping films, reducing material costs and simplifying the manufacturing process.
Solution Approach 2:
The patent makes the light guide plate multi-functional by enabling it to perform both display illumination and anti-peeping control. This universality reduces the total number of components needed, lowering production costs while maintaining the anti-peeping function through the light guide plate's controllable light scattering regions.
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
Enables easy operation, low production costs, and effective switching between narrow and wide viewing angles, enhancing display device functionality while preventing screen damage and maintaining thin device thickness.
Implementation Method 1
at least one fiber bundle, each of the at least one fiber bundle passing through one of the at least one first through-hole and one of the at least one second through-hole
Implementation Method 2
allowing for switching between narrow and wide viewing angles by altering the scattering state of the fiber bundle ends
Data Source
AI summary
A light guide structure and a display device are provided. The light guide structure includes: a first substrate including at least one first through hole; a second substrate arranged opposite to the first substrate and including at least one second through hole; and at least one fiber bundle including a first end and a second end, the first end of each of the fiber bundle fixed in one of the first through holes, and the second end of the fiber bundle is a free end; wherein a distance between the first substrate and the second substrate is adjustable; and an orthogonal projection of at least part of the first through hole on the second substrate coincides with the second through hole.