Light Guide Plate Prism Cylindrical Array Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current light guide plates integrating multiple optical functions face challenges in design complexity, processing accuracy, and cost due to the need for composite film structures, which complicates mass production and limits functional complexity.
Innovation Solution
A light guide plate design featuring a first prism structure array and a second cylindrical structure array, where the first prism structure array guides light from the incident surface to the emitting surface, and the second cylindrical structure array reduces the light-emitting angle, enhancing brightness and uniformity, integrated into a single refractive index material for simplified manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a composite film structure is used to integrate multiple optical functions, then the functional complexity is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent merges multiple optical functions (light guiding, light emitting, and optical control) into a single integrated light guide plate structure. The first prism structure array on the incident surface and the second cylindrical structure array on the emitting surface are both formed on one piece of transparent refractive index material, eliminating the need for multiple separate optical films and their associated adhesives and spacers.
Solution Approach 2:
The light guide plate serves multiple functions simultaneously: it guides light from the incident surface to the emitting surface, controls the light emission direction through the prism structures, and adjusts the light distribution uniformity through the cylindrical structures. This multi-functional integration reduces the overall device complexity while maintaining high functional capability.
2Adaptability or versatility
If a composite film structure is used to integrate multiple optical functions, then the functional complexity is improved, but the manufacturing precision requirements increase
Solution Approach 1:
By combining all optical structures into a single light guide plate, the patent eliminates multiple alignment and bonding processes that would require high precision. The integrated structure reduces cumulative tolerance errors and simplifies quality control, as there are no interfaces between multiple films that could cause misalignment or delamination.
3Adaptability or versatility
If a composite film structure is used to integrate multiple optical functions, then the functional complexity is improved, but the production cost increases
Solution Approach 1:
The integration of multiple optical functions into a single light guide plate reduces the total number of components, assembly steps, and quality inspection processes. This streamlined manufacturing approach lowers production costs despite the increased functional complexity, making the solution economically viable for mass production.
4Illumination intensity
If the light-emitting angle is reduced to enhance brightness, then the illumination intensity is improved, but the light distribution uniformity may deteriorate
Solution Approach 1:
The patent applies different optical structures at different locations: the first prism structure array on the incident surface controls the overall light emission direction to enhance central brightness, while the second cylindrical structure array on the emitting surface locally adjusts the light distribution to maintain uniformity across the display area. Each structure performs its specific function optimally without interfering with the other.
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 design improves central brightness and contrast of the display image by reducing light-emitting angles and simplifying the structure, facilitating ultra-thin backlight modules and display devices with enhanced image quality and reduced production costs.
Implementation Method 1
the first prism structure array is configured to enable light emitted from the light incident surface to be emitted toward the light-emitting surface
Implementation Method 2
the second cylindrical structure is configured to enable light emitted toward the light-emitting surface to be uniformly emitted from the light-emitting surface, and is configured to enable a direction of light emitted from the light-emitting surface to approach a third direction
Data Source
AI summary
A light guide plate and a manufacturing method thereof, a backlight module, and a display device are provided. The light guide plate includes a light incident surface, a light reflection surface, and a light-emitting surface; the light reflection surface includes a first prism structure array, the first prism structure array includes first prisms arranged in sequence in a first direction, and the first direction is perpendicular to the light incident surface; the first prism structure array is configured to enable light emitted from the light incident surface to be emitted toward the light-emitting surface; and the light-emitting surface includes a second cylindrical structure array, the second cylindrical structure array includes second cylindrical structures arranged side by side in a second direction, the second direction is perpendicular to the first direction, and a first plane including the first direction and the second direction is perpendicular to the light incident surface.