Indicator Display Panel Structure for Wear Resistance and Light Leakage
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Solution Overview
Problem
Existing display devices lack wear resistance on the front-side surface and suffer from light leakage issues, causing nearby indicators to be visually recognized when a light source corresponding to an eligible indicator is turned on.
Innovation Solution
A display device with a panel having a cover film integrally formed on its surface, featuring light sources and light guiding bodies on the rear surface, and a case with exposing portions that enhance wear resistance and prevent light leakage by guiding light only to eligible indicators, using a white resin case with light shielding properties and a polycarbonate or acrylic cover film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a translucent colored layer is formed by printing or hot stamping on the front-side surface, then the indicators become invisible when LEDs are off, but the wear resistance of the front-side surface cannot be increased
Solution Approach 1:
The patent divides the display system into separate functional components: the front-side surface is segmented from the indicator elements, allowing the front surface to be a separate durable cover layer while indicators are positioned on the rear side. This segmentation enables the front surface to focus on wear resistance while indicators handle visibility control.
Solution Approach 2:
The patent moves the indicators from the front-side surface to the rear-side surface of the dial plate, changing their spatial dimension. This dimensional relocation allows the front surface to be optimized for durability while indicators are positioned where they can be controlled by light sources without compromising the front surface's wear resistance.
2Reliability
If indicators are disposed on the rear-side surface of the dial plate, then light can be emitted to display indicators, but nearby indicators not eligible for being displayed are visually recognized due to light leakage
Solution Approach 1:
The patent applies local quality by providing light-shielding colored layers at specific locations on the rear-side surface, particularly in regions adjacent to indicator windows. These localized shielding layers prevent light from leaking into adjacent indicator areas, ensuring that only the intended indicator is visible when activated.
Solution Approach 2:
The patent introduces light-shielding colored layers as intermediary elements between the light sources and adjacent indicator windows. These intermediary layers absorb or block stray light, preventing it from reaching unintended indicator areas and causing false visual recognition.
3Loss of information
If a light-shielding colored layer is provided on the rear-side surface except indicators, then light leakage is prevented, but the device complexity increases
Solution Approach 1:
The patent merges the light-shielding colored layers with the dial plate structure itself, integrating the shielding function into the existing dial plate component rather than adding separate shielding elements. This integration reduces overall device complexity while maintaining light leakage prevention.
Solution Approach 2:
The dial plate is designed to serve multiple functions simultaneously: it provides the structural base for indicators, contains the light-shielding colored layers for light leakage prevention, and maintains aesthetic appearance. This multi-functionality reduces the need for additional separate components, thereby reducing device complexity.
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 enhances wear resistance and prevents nearby indicators from being visually recognized by controlling light emission and reflection, ensuring clear visibility of only the intended indicators.
Implementation Method 1
a plurality of light guiding bodies disposed side by side on the same side as the rear surface of the panel, the plurality of light guiding bodies guiding light emitted from the plurality of light sources toward the display portion of the panel
Implementation Method 2
The panel has a surface on which a cover film is integrally formed... it is possible to enhance the wear resistance of the surface of a panel
Implementation Method 3
a plurality of light sources disposed side by side on the same side as the rear surface of the panel... The plurality of light sources selectively emit light, so that a plurality of designs are selectively displayed
Data Source
AI summary
A display device has: a panel having a display portion; a plurality of light sources and light guiding bodies provided side by side below the rear surface of the panel; and a case having a plurality of holding spaces provided side by side below the rear surface of the panel, one light source and one light guiding body being placed in each of the plurality of holding spaces. The plurality of light sources selectively emit light so as to selectively display a plurality of designs at the display portion. A cover film is integrally formed on a surface of the panel. The upper surface of the case, the upper surface facing the rear surface of the panel, has a plurality of exposing portions from which the upper ends of the plurality of light guiding bodies are exposed. Each exposing portion has the shape of the design in plan view.