Lens-Guided Display Assembly for Uniform Front-Side Brightness
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Solution Overview
Problem
Existing display devices with light sources on the back surface of a display plate suffer from uneven brightness on the front surface due to structural limitations, which affect the visibility of displayed characters, numbers, and symbols.
Innovation Solution
The proposed solution involves an assembling method for a display device that includes a substrate with a light source, a display plate, a tubular panel, and a lens with a rib and slide groove mechanism, where the lens is slid into the panel and the display plate is assembled to position a claw portion between the rib and the display plate, ensuring uniform light distribution and reducing brightness unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light source is disposed on the back surface side of a display plate, then the display area can be illuminated, but unevenness in brightness occurs on the front surface
Solution Approach 1:
A lens is introduced as an intermediary component between the light source and the display plate. The lens receives light from the light source and guides it through its internal structure (including slide grooves and ribs) to distribute light uniformly across the display plate's front surface, thereby eliminating brightness unevenness without requiring complex additional structures
Solution Approach 2:
The lens changes the spatial distribution parameters of light by refracting and guiding it through specific paths defined by slide grooves and ribs. This transforms concentrated light from the light source into uniformly distributed light across the display area, achieving brightness uniformity through optical parameter modification
2Illumination intensity
If structural features like ribs are added to guide light, then brightness uniformity improves, but areas where light is blocked increase
Solution Approach 1:
The lens utilizes three-dimensional light guiding paths within its structure. Instead of flat two-dimensional light distribution, the slide grooves and ribs create multi-dimensional light routes that redirect light around obstructing structures, allowing light to reach areas that would otherwise be blocked and reducing the effective blocked area
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
This configuration ensures uniform brightness on the front surface of the display plate by guiding light around structural features, enhancing the visibility of displayed content by reducing areas where light is blocked, thus improving the overall display quality.
Implementation Method 1
a lens that is disposed between the substrate and the display plate and guides light emitted from the at least one light source
Data Source
AI summary
A display device includes a substrate on which at least one light source is disposed; a display plate disposed to face the substrate; a tubular panel that surrounds and holds a periphery of the substrate and a periphery of the display plate; and a lens disposed between the substrate and the display plate and guides light emitted from the at least one light source; wherein the tubular panel has at least one rib protruding from an inner peripheral surface thereof, and the lens has at least one slide groove in which the at least one rib is movable forward and backward when the lens is assembled into the tubular panel and has at least one claw portion disposed adjacent to the at least one slide groove, and the at least one claw portion is positioned between the at least one rib and the display plate in an assembled state.