Reflective Member Integrated Bottom Cover for Slim Display
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Solution Overview
Problem
Display devices face challenges in reducing overall thickness while maintaining or enhancing optical efficiency, particularly in transmissive and transflective types which include a backlight unit, display panel, and cover structures.
Innovation Solution
The display device incorporates a reflective member integrated with the bottom cover, which supports the display panel and overlaps the emission surface of the light guide plate, allowing leaked light to be reincident, thereby increasing optical efficiency and reducing thickness by using a light guide plate, light source, and optical sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a backlight unit with light guide plate and optical sheets is used to improve optical efficiency, then the overall thickness of the display device increases
Solution Approach 1:
The reflective member is integrated with the bottom cover to form a unified structure, eliminating the need for separate reflective components and reducing overall thickness while maintaining optical efficiency through the combined support and light redirection functions
Solution Approach 2:
The reflective member utilizes the thickness dimension of the bottom cover by bending the bottom portion to create sidewalls and support portions, effectively using vertical space to achieve light redirection without adding horizontal thickness to the device
2Strength
If the bottom cover is bent to create support portions and sidewalls, then the structural complexity increases
Solution Approach 1:
The bottom cover is designed to perform multiple functions simultaneously: it provides structural support through bent sidewalls, supports the display panel through integrated support portions, and redirects light through its reflective inner surfaces, eliminating the need for separate components for each function
Solution Approach 2:
The bottom cover is divided into functional zones including bottom portions, sidewalls, and support portions with reflective inner surfaces, allowing each segment to perform its specific function while maintaining overall structural integrity
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 results in a slim display device with improved optical efficiency by reincident light, enhancing image generation and reducing the overall thickness of the device.
Implementation Method 1
The reflective member is coupled to the support portion, partially overlaps the emission surface, and has a same thickness as the support portion
Data Source
AI summary
A display device includes a display panel, a backlight unit, a bottom cover and a reflective member. The bottom cover defines a bottom portion thereof on which the backlight unit is supported. The bottom portion defines a plurality of edges thereof. The bottom portion is bent at a first edge thereof to define a first sidewall of the bottom cover, the first sidewall facing a light incident surface of a light guide plate. The first sidewall is bent to define a support portion of the bottom cover at the light incident surface of the light guide plate, the support portion extended to face the bottom portion and support the display panel thereon. The reflective member is coupled to the support portion, partially overlaps an emission surface of the light guide plate and has a same thickness as the support portion.