Light Guide Plate With Separating Portions For Thermal Stability
Solution Overview
Problem
Existing light guide plates in backlight modules face challenges such as high manufacturing costs, time consumption, and material expansion/contraction issues, which can lead to interference with light-emitting components.
Innovation Solution
A light guide plate design featuring a bottom surface and a light-emitting surface, with a plurality of light-guiding lenses, accommodating regions, and separating portions. The separating portions reduce thermal expansion and contraction, maintaining the plate's flatness and preventing interference with light-emitting components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single lens or integral lens is used as the light guide plate, then the light distribution can be achieved, but the manufacturing cost increases and assembly time consumption increases
Solution Approach 1:
The light guide plate is divided into multiple independent light-guiding lenses arranged in an array, replacing the traditional single integral lens. This segmentation allows each lens to be manufactured and assembled independently, significantly reducing assembly time and cost while maintaining uniform light distribution through the array configuration.
2Illumination intensity
If a single lens or integral lens is used as the light guide plate, then the light distribution can be achieved, but the manufacturing cost increases
Solution Approach 1:
The light guide plate is divided into multiple independent light-guiding lenses arranged in an array, replacing the traditional single integral lens. This segmentation allows each lens to be manufactured and assembled independently, significantly reducing assembly time and cost while maintaining uniform light distribution through the array configuration.
3Stability of the object's composition
If the light guide plate material expands and contracts with temperature change, then the material properties are maintained, but the flatness of the light guide plate deteriorates and interference with light-emitting components occurs
Solution Approach 1:
The light guide plate is divided into multiple independent light-guiding lenses arranged in an array, replacing the traditional single integral lens. This segmentation allows each lens to be manufactured and assembled independently, significantly reducing assembly time and cost while maintaining uniform light distribution through the array configuration.
Solution Approach 2:
Separating portions are introduced between adjacent light-guiding lenses to provide localized thermal expansion and contraction accommodation. These separating portions allow each lens to independently respond to temperature changes, preventing stress accumulation and maintaining overall flatness while preserving material property consistency.
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 design simplifies backlight module assembly, maintains the dimensional integrity of the light guide plate, and prevents interference with light-emitting components, even under temperature changes.
Implementation Method 1
the light guide plate has lower degree of expansion and contraction due to temperature change
Data Source
AI summary
A light guide plate has a bottom surface and a light-emitting surface opposite to the bottom surface, and comprises light-guiding lenses, accommodating regions, and separating portions. The light-guiding lenses are arranged along a first direction and a second direction, and form a light-guiding lens array, where the first direction is perpendicular to the second direction, and the first direction and the second direction are parallel to the bottom surface and the light-emitting surface. The accommodating regions are arranged in the light-guiding lenses, respectively, and are configured to dispose at least one light-emitting component. Each of the separating portions is located between adjacent two of the light-guiding lenses, and the plurality of light-guiding lenses are arranged along the first direction or the second direction on two sides of each of the separating portions. The present invention further provides a backlight module.