Side Reflector Geometry for Display Luminance Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face challenges in improving image quality, luminance, light uniformity, and white light purity, particularly due to issues with the backlight unit's light distribution and bluish phenomenon.
Innovation Solution
A display device design incorporating a substrate with a light source, an inner frame, an optical layer, and a side reflector with specific geometrical features to enhance light reflection and distribution, including a base surface, inclination surface, and side surface, which are strategically positioned to improve light uniformity and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional backlight unit is used, then the device structure is simple, but the light uniformity and luminance are insufficient
Solution Approach 1:
The side reflector is divided into three distinct surfaces: a base surface adjacent to the substrate, an inclination surface adjacent to the optical layer, and a side surface connecting them. This segmentation allows each surface to perform a specific light reflection function, improving light uniformity and luminance while maintaining a relatively simple overall structure.
Solution Approach 2:
The side reflector transitions from a conventional planar structure to a three-dimensional structure with multiple surfaces at different angles. The inclination surface is positioned at an angle relative to the base surface, creating spatial dimensionality that enhances light distribution and addresses the bluish phenomenon by reflecting light from multiple angular directions.
2Illumination intensity
If the optical depth is increased to improve light uniformity, then light uniformity improves, but the device thickness increases
Solution Approach 1:
The side reflector employs an inclined surface that angles toward the display panel, creating a curved or angled reflection path rather than a straight linear path. This allows light to be redistributed more uniformly across the display area without requiring increased optical depth, as the angled surface redirects light laterally to fill uniformity gaps.
3Object-generated harmful factors
If conventional light reflection is used, then the structure is simple, but the bluish phenomenon occurs and white light purity deteriorates
Solution Approach 1:
Different surfaces of the side reflector are positioned to address specific local issues: the base surface handles light reflection near the substrate, the inclination surface addresses light distribution near the optical layer to reduce bluish phenomenon, and the side surface provides additional reflection. This localized quality enhancement targets the bluish phenomenon specifically without over-complicating the entire structure.
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 solution effectively enhances luminance and light uniformity, reduces optical depth, and improves white light purity by addressing the bluish phenomenon, resulting in a robust and efficient display device structure.
Implementation Method 1
a side reflector which is positioned between the optical layer and the frame, and coupled to the inner frame, wherein the side reflector includes: a base surface positioned adjacent to the substrate; an inclination surface which is positioned adjacent to a lower surface of the optical layer, and reflects the light provided from the light source to the optical layer
Implementation Method 2
an inclination surface which is positioned adjacent to a lower surface of the optical layer, and reflects the light provided from the light source to the optical layer
Implementation Method 3
an optical layer which is positioned between the display panel and the inner frame, and in contact with the inner frame
Data Source
AI summary
Disclosed is a display device. The display device includes a display panel; a frame positioned in a rearward direction of the display panel; a substrate which is positioned on the frame, and has a light source providing light; an inner frame which is coupled to the frame, and supports the display panel; an optical layer which is positioned between the display panel and the inner frame, and in contact with the inner frame; and a side reflector which is positioned between the optical layer and the frame, and coupled to the inner frame, wherein the side reflector includes: a base surface positioned adjacent to the substrate; an inclination surface which is positioned adjacent to a lower surface of the optical layer, and reflects the light provided from the light source to the optical layer; and a side surface which connects the base surface and the inclination surface, and reflects the light provided by the light source.