A display device
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Solution Overview
Problem
Existing display units are inflexible in orientation, require separate frames for different paper sizes, and have components prone to breakage and aesthetic issues due to rivets and coatings.
Innovation Solution
A display device with a backpiece and frontispiece hinged together, featuring a catch mechanism with a movable actuator and wedge-shaped retaining element, allowing easy orientation change and secure attachment without rivets, and using resilient supports for different thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a liquid crystal display is used, then power consumption is reduced compared to CRT, but viewing angle is limited and colors appear unnatural when viewed from angled positions
Solution Approach 1:
A color compensation film is introduced as an intermediary component between the liquid crystal display and the viewer. This film compensates for color shifts that occur when viewing from angled positions, maintaining color accuracy without requiring changes to the fundamental LCD technology or increasing power consumption.
Solution Approach 2:
The display system uses a composite structure combining the liquid crystal display with a color compensation film having specific optical properties. The film's refractive index and optical compensation characteristics work together with the LCD to maintain color accuracy across different viewing angles while preserving the low power consumption advantage.
2Illumination intensity
If a color compensation film is added to improve viewing angle and color accuracy, then color consistency improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The color compensation film serves multiple functions simultaneously: it compensates for color shifts, improves viewing angle performance, and maintains color consistency across the display surface. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
3Illumination intensity
If a color compensation film is added to improve viewing angle and color accuracy, then color consistency improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies particular parameter ranges for the color compensation film, including refractive index (1.45-1.60 at 550nm wavelength) and thickness (30-80 micrometers). By optimizing these parameters, the film achieves effective color compensation while being more tolerant to manufacturing variations, thereby reducing the stringency of precision requirements.
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 flexible orientation adjustment between portrait and landscape, accommodates various paper sizes, reduces production costs, and minimizes damage risk through resilient supports and self-colored components.
Implementation Method 1
a color compensation film is positioned between the liquid crystal display and the viewer to compensate for any color shifts that occur when viewed from angled positions
Implementation Method 2
A color compensation film having a specific refractive index and specific optical compensation characteristics
Data Source
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AI summary
A display device is disclosed. The display device comprises a backpiece, hingeably mounted by one or more hinge elements to a frontispiece, enabling the frontispiece to be pivoted along a first edge between a closed, display position and an open position allowing insertion/removal of a display article. The frontispiece has a border section and a transparent viewing section, the viewing section and border section secured together to form the frontispiece. Additionally, a catch releasably securing the frontispiece to the backpiece is included, the catch comprising an actuator movable within the backpiece and in a direction through the body of the backpiece, to respectively engage and release the frontispiece, whereby movement of the actuator causes a retaining element to raise and lower to respectively engage and disengage from a retaining element barrier mounted on the frontispiece, said engagement preventing pivoting of the frontispiece from the closed position.