Light Guide Plate Prism Segmentation for Variable Display Patterns
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Solution Overview
Problem
Existing display devices, such as those described in Patent Literature 1, are limited in their ability to change display designs beyond predefined combinations of patterns, failing to meet the increasing demand for higher visual effects.
Innovation Solution
A display device comprising a display panel, a light guide plate with prisms, and multiple light sources, where the light guide plate is made of transparent material with incident and emission surfaces, and prisms arranged to reflect light from different sources, allowing for variable image display with superimposed patterns, controlled by a controller to switch between lighting modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple light sources and prism arrangements are used to enable variable image display with superimposed patterns, then visual effects and display versatility are improved, but device complexity increases
Solution Approach 1:
The light guide plate is segmented into multiple functional regions with different prism arrangements (first prisms for full illumination, second prisms for pattern display, third prisms for additional patterns). Each region handles specific display functions independently, allowing versatile display combinations while maintaining a unified plate structure that manages complexity.
Solution Approach 2:
The light guide plate serves multiple functions simultaneously: it guides light from multiple sources, creates full illumination areas, generates superimposed patterns, and allows switching between different display modes. This multi-functionality consolidates what would otherwise require separate devices into a single integrated component.
2Adaptability or versatility
If multiple light sources are used to illuminate the light guide plate from different directions, then pattern superimposition capability is improved, but manufacturing complexity increases
Solution Approach 1:
Different regions of the light guide plate have locally optimized prism characteristics: first prisms for uniform illumination, second prisms for specific pattern formation, and third prisms for additional patterns. This local differentiation enables sophisticated display capabilities while allowing each region to be manufactured using standardized processes.
Solution Approach 2:
The light guide plate integrates multiple prism types with different optical properties into a single composite structure. This composite design enables the plate to perform multiple optical functions (full illumination, pattern generation, pattern superimposition) simultaneously, achieving high versatility without requiring multiple separate components.
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
Enables the display device to switch between displaying a variable image alone or with a superimposed pattern, enhancing visual effects by allowing various display combinations and improving visual engagement.
Implementation Method 1
The plurality of first prisms reflect light emitted from the first light source and entering the guide plate through the first incident surface toward the emission surface
Implementation Method 2
The plurality of second prisms reflect light emitted from the second light source and entering the guide plate through the second incident surface toward the emission surface
Implementation Method 3
The plurality of third prisms reflect light emitted from the third light source and entering the light guide plate through the third incident surface toward the emission surface
Data Source
AI summary
A display device has a display panel including an image display area in which an image is displayable, a light guide plate arranged at a back of the display panel, the light guide plate comprising a transparent material and having a first incident surface and a second incident surface, a first light source facing the first incident surface, a second light source facing the second incident surface, and a controller configured to control turning on and turning off of the first light source and the second light source and to control an image displayed on the display panel. The light guide plate includes an emission surface facing the display panel, and a plurality of first prisms arranged in an area in correspondence with the image display area on a surface opposite to the emission surface.