Light Guide Plate Groove and Prism Structure for Side Light Refraction
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Solution Overview
Problem
Current light guide plates in total reflective display panels have a flat design, resulting in low efficiency in refracting and reflecting side light, which affects the performance of front light sources and overall product efficiency.
Innovation Solution
A light guide plate structure with groove-shaped structures on one end surface and prisms on the opposing surface, designed to refract and reflect side light more effectively, increasing the light's reach to the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat light guide plate design is used, then the structure is simple and easy to manufacture, but the light refraction and reflection efficiency is low
Solution Approach 1:
The patent applies curvature by introducing groove-shaped structures and prism arrays with curved surfaces into the light guide plate. These curved optical elements refract and reflect light more effectively than flat surfaces, solving the low efficiency problem while maintaining overall structural simplicity for easy manufacturing.
Solution Approach 2:
The patent applies local quality by adding optical structures (grooves and prisms) only at specific locations where light guidance is needed, rather than making the entire plate complex. The flat areas remain simple for easy manufacturing, while localized curved structures provide enhanced light refraction and reflection efficiency.
2Device complexity
If a flat light guide plate design is used, then the manufacturing process is simple, but the working efficiency of the front light source is low
Solution Approach 1:
The curved groove-shaped structures and prism arrays refract light from the front light source more effectively, directing it toward the display panel. This increases light utilization efficiency without requiring a completely complex device structure, as only specific regions of the light guide plate are modified.
Solution Approach 2:
Optical enhancement structures are applied locally at the light source interface rather than throughout the entire device. This localized approach improves front light source efficiency while keeping the overall device complexity low and manufacturing straightforward.
3Device complexity
If a flat light guide plate is used, then the structure is simple, but most light from the side light source cannot be refracted and reflected to the display panel
Solution Approach 1:
The light guide plate is segmented into functional zones: groove-shaped structures for initial light refraction, prism arrays for additional reflection and direction control, and transport regions for light propagation. This segmentation enables systematic light management, directing more side light to the display panel while keeping each component relatively simple.
Solution Approach 2:
Curved groove structures and prism surfaces refract and reflect side light more effectively than flat surfaces, capturing light that would otherwise be lost and directing it toward the display panel. This reduces energy loss without requiring complex multi-component systems.
4Productivity
If optical structures are added to the light guide plate, then light refraction efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple optical functions (refraction, reflection, light direction) are merged into integrated groove-shaped structures and prism arrays that can be formed in a single manufacturing process. This combining of functions maintains high light refraction efficiency while avoiding the complexity of assembling multiple separate optical components.
Solution Approach 2:
The groove-shaped structures and prism arrays serve multiple optical functions simultaneously: refraction, reflection, and light direction control. This multi-functionality reduces the need for multiple specialized components, simplifying manufacturing while maintaining high light refraction efficiency.
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 described light guide plate structure enhances the refraction and reflection of side light, improving the use efficiency of the side light source and enhancing the performance of reflective liquid crystal display panels by providing light to areas farther from the source.
Implementation Method 1
A first end surface of the light guide plate includes a plurality of groove-shaped structures disposed therein, the groove-shaped structures configured to refract light emitted by a side light source
Implementation Method 2
A second end surface of the light guide plate includes a plurality of prisms disposed therein, the prisms configured to refract light emitted by the side light source
Implementation Method 3
the groove-shaped structures configured to refract light emitted by a side light source, a second end surface of the light guide plate including a plurality of prisms disposed therein, the prisms configured to refract light emitted by the side light source
Data Source
Figure 1~2
Figure 3~4
AI summary
Provided are a light guide plate structure, a display device, and an electronic device. The light guide plate structure includes : a light guide plate (1), a first end surface (11) of the light guide plate (1) including a plurality of groove-shaped structures (111) disposed therein, the groove-shaped structures (111) configured to refract light emitted by a side light source (2), a second end surface (12) of the light guide plate (1) including a plurality of prisms (121) disposed therein, the prisms (121) configured to refract light emitted by the side light source (2), the groove-shaped structures (111), the prisms (121), and the light guide plate (1) being formed as an integrated structure, and the first end surface (11) of the light guide plate (1) and the second end surface (12) of the light guide plate (1) being two opposite surfaces.