Light-Emitting Label With Light Guide Plate For Uniform Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light-emitting labels suffer from nonuniform brightness, inadequate waterproofing, and excessive thickness, which affects their attractiveness and functionality, particularly in applications like liquid containers.
Innovation Solution
A light-emitting label system comprising a back plate, a battery, a light guide plate, a flexible printed circuit with light-emitting diodes, and a pattern layer, where the light guide plate has a light guide portion with a proximal and distal side and a receiving portion to accommodate the circuit, and a slot for electrical connection, ensuring uniform light emission and reduced thickness, along with a reflective layer for enhanced light efficiency and waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional light-emitting labels are used, then light emission function is provided, but brightness uniformity is poor
Solution Approach 1:
A light guide plate is introduced as an intermediary component between the light-emitting diodes and the label surface. The light guide plate receives light from LEDs and distributes it uniformly across the label, eliminating bright spots and shadow regions while maintaining reliable light emission function
Solution Approach 2:
The light-emitting diodes are extracted from direct contact with the label surface and positioned within a receiving portion of the light guide plate. This separation allows the LEDs to emit light into the light guide plate, which then distributes the light uniformly, resolving the brightness uniformity issue
2Reliability
If waterproofing is enhanced, then protection performance is improved, but structure complexity increases
Solution Approach 1:
The back plate serves multiple functions simultaneously: it provides structural support, seals the battery compartment, and creates a waterproof barrier. By combining these functions into a single component, waterproof performance is achieved without significantly increasing structure complexity
Solution Approach 2:
The light guide plate is designed with dual functionality: it guides and distributes light uniformly while simultaneously providing waterproof sealing when combined with the back plate. This multi-functionality reduces the need for additional waterproofing components
3Duration of action of moving object
If battery is included, then light emission capability is provided, but overall thickness increases
Solution Approach 1:
The battery is nested within a sealed compartment formed by the back plate and light guide plate structure. The battery fits into the available space without requiring additional external housing, minimizing the increase in overall thickness while maintaining light emission capability
Solution Approach 2:
The label structure utilizes the thickness dimension efficiently by positioning the battery within the depth of the light guide plate assembly rather than adding external thickness. The light guide plate's receiving portion accommodates the battery in a space-efficient manner
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 system achieves high-luminosity and uniform light emission, reduces overall thickness to 2.1 mm or less, provides excellent waterproof performance, and allows for recharging, making it suitable for liquid containers while saving costs and protecting the environment.
Implementation Method 1
a light guide plate comprising a front light guide surface and a rear light guide surface opposite to the front light guide surface
Implementation Method 2
a flexible printed circuit comprising a substrate surface and an electrically-conductive surface opposite to the substrate surface, the electrically-conductive surface comprising a plurality of light-emitting diodes arranged on the electrically-conductive surface
Data Source
AI summary
A light-emitting label (100, 210, 300, 400, 500) and a light-emitting label system (200) comprising same. The light-emitting label (100, 210, 300, 400, 500) comprises: a back plate (110, 310, 410, 510), at least one battery (120, 320, 420, 520), a light guide plate (140, 340, 440, 540), a flexible printed circuit (150, 350, 450, 550), and a pattern layer (160, 360, 460, 560). The flexible printed circuit (150, 350, 450, 550) comprises a substrate surface (152) and an electrically-conductive surface (154) comprising a plurality of light-emitting diodes (1542) arranged thereon. The light guide plate (140, 340, 440, 540) comprises a front light guide surface (142) and a rear light guide surface (144) opposite thereto. The pattern layer (160, 360, 460, 560) fixes the flexible printed circuit (150, 350, 450, 550) onto the front light guide surface (142), and the back plate (110, 310, 410, 510) seals the at least one battery (120, 320, 420, 520) onto the rear light guide surface (144). The light guide plate (140, 340, 440, 540) further comprises a light guide portion (1410) and a receiving portion (1420, 4420). The electrically-conductive surface (154) of the flexible printed circuit (150, 350, 450, 550) is positioned to be juxtaposed to the front light guide surface (142), and the plurality of light-emitting diodes (1542) extend into the receiving portion (1420, 4420) such that the plurality of light-emitting diodes (1542) emit light in a direction of a distal side of the light guide portion (1410). The light guide plate (140, 340, 440, 540) further comprises a slot (1417, 3417) for allowing the flexible printed circuit (150, 350, 450, 550) to be electrically connected to the at least one battery (120, 320, 420, 520). The light-emitting label (100, 210, 300, 400, 500) can achieve a high-luminosity and uniform light-emitting effect, and is waterproof and recyclable.