Light Guide Plate Supporting Unit for Slim Border Light Leakage
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Solution Overview
Problem
Conventional light guide plates in slim border display devices suffer from light leakage due to a narrower light-blocking area and lack of a supporting structure, which compromises optical quality and view angle.
Innovation Solution
A light guide plate with a supporting unit integrated along its lateral side, featuring a top surface above the light-exiting face and an outer side surface that protrudes to form a recess, allowing for improved structural support and reduced light leakage by positioning the back plate's side wall within this recess, enhancing the light-blocking area and optical film placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional light guide plate without supporting unit is used, then the structure is simpler, but light leakage occurs and structural support is insufficient for slim border design
Solution Approach 1:
The patent merges the supporting function into the light guide plate by adding a supporting unit integrated with the plate body. This combination allows the light guide plate to simultaneously provide light guidance and structural support, eliminating the need for separate supporting components while preventing light leakage in slim border designs.
Solution Approach 2:
The supporting unit extends from the lateral side of the light guide plate in a dimensional direction perpendicular to the light exiting face. This three-dimensional structure protrudes outward to form a recess that effectively blocks light leakage paths without interfering with the optical function of the plate body.
2Area of stationary object
If the light guide plate has no supporting unit, then manufacturing is easier, but the light-blocking area is insufficient for slim border design
Solution Approach 1:
The light guide plate is segmented into two functional parts: the plate body for light guidance and the supporting unit for light blocking. This segmentation allows each part to be optimized for its specific function while being manufactured as an integrated component, increasing the light-blocking area without complicating the manufacturing process.
3Area of moving object
If optical films are placed directly on the light guide plate, then the structure is simpler, but larger optical films cannot be properly disposed and light leakage occurs
Solution Approach 1:
The supporting unit creates a recess structure that accommodates and nests the optical films. This nested configuration allows larger optical films to be properly positioned and secured on the light guide plate, preventing light leakage while maintaining a compact overall structure.
Data Source
AI summary
A light guide plate includes a plate body and a supporting unit. The plate body has a light-exiting face and a lateral side, wherein the supporting unit is disposed along the lateral side. The supporting unit has a top surface and an outer lateral surface, the top surface is above the light-exiting face, the lateral surface protrudes from an end surface of the lateral side of the plate body, wherein a portion of the end surface away from the light-exiting face is exposed to form a recess. A backlight module includes the light guide plate mentioned above and a back plate having the light guide plate disposed thereon. A periphery of the back plate has a side wall formed thereon and extending into the recess. A display device includes the above light guide plate and a display panel.