Quantum Dot Sheet Spacing in Display Backlight Assembly
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Solution Overview
Problem
Current display apparatuses face limitations in enhancing color reproducibility and effective display area, particularly with the placement and spacing of quantum dot sheets and optical sheets, which affect the overall light diffusion and delivery to the display panel.
Innovation Solution
The display apparatus incorporates a quantum dot sheet and optical sheets that are strategically spaced apart, supported by a middle holder and middle mold, respectively, to enhance light diffusion and color reproducibility, with the quantum dot sheet positioned at the front of the backlight and optical sheets disposed at the rear, allowing for improved light distribution and increased effective display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the quantum dot sheet and optical sheets are placed close to each other, then the structure is compact, but the light diffusion effect is reduced and color reproducibility is compromised
Solution Approach 1:
A holder structure is introduced as an intermediary component between the quantum dot sheet and optical sheets. This holder includes positioning protrusions that extend from the backlight assembly and engage with the quantum dot sheet, maintaining a predetermined spacing distance. This intermediary structure enables both compact overall design and proper light diffusion spacing simultaneously.
Solution Approach 2:
The patent specifies a predetermined spacing distance parameter between the quantum dot sheet and optical sheets, optimized for light diffusion performance. By controlling this parameter through the holder structure, the system achieves optimal color reproducibility while maintaining compact form factor through precise parameter management.
2Area of stationary object
If the quantum dot sheet is positioned closer to the display panel, then the effective display area is increased, but the light diffusion and color accuracy are reduced
Solution Approach 1:
The holder structure acts as a mediator that positions the quantum dot sheet at an optimal distance from the display panel. The positioning protrusions ensure the quantum dot sheet maintains proper spacing while maximizing the effective display area, achieving both area expansion and color accuracy preservation.
Solution Approach 2:
Instead of positioning the quantum dot sheet directly adjacent to the display panel in the primary display plane, the holder structure positions it in a secondary dimension (spacing distance), allowing the quantum dot sheet to be closer to the panel while maintaining optimal light diffusion distance, thus expanding effective area without sacrificing color accuracy.
3Length of stationary object
If the optical sheets are placed close to the quantum dot sheet, then the device thickness is reduced, but the light diffusion effect is compromised
Solution Approach 1:
The holder structure serves as an intermediary that manages the spacing between the quantum dot sheet and optical sheets. By using positioning protrusions of optimized length, the system achieves compact device thickness while maintaining sufficient spacing for effective light diffusion through the intermediary positioning mechanism.
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 configuration enhances the immersion and color accuracy of the display by diffusing light effectively between the quantum dot sheet and optical sheets, thereby increasing the effective display area and improving the viewer's experience.
Implementation Method 1
a quantum dot sheet disposed at a front side of the backlight
Implementation Method 2
a diffusion member disposed at a front side of the backlight, such that a rear surface of the quantum dot sheet is supported at a front surface of the diffusion member
Data Source
AI summary
Disclosed herein is an image forming apparatus which includes a display panel, a backlight disposed at a rear side of the display panel, optical sheets disposed at a rear surface of the display panel, a quantum dot sheet disposed at a front side of the backlight, a bottom chassis configured to accommodate the backlight, and a middle holder configured to support outer sides of the quantum dot sheet while installed in the bottom chassis, and thus the quantum dot sheet is installable in conjunction with the middle holder in a state of being spaced apart from the optical sheets.