Display Apparatus Support Member Light Transmittance
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Solution Overview
Problem
Conventional edge-lit type display apparatuses have limitations in size due to the requirement for a light guide plate that matches the size of the diffusion plate, leading to constraints in image quality and size reduction.
Innovation Solution
Incorporating a support member with varying light transmittance regions and a disk portion with different light transmittance regions to optimize light distribution and reduce the size of the light guide plate, allowing for a larger display panel while maintaining image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a typical edge-lit type backlight unit is used with a light source disposed on a lateral surface of a light guide plate, then the display apparatus becomes thinner, but the size of the display panel is limited to be the same as the size of the light guide plate
Solution Approach 1:
The support member is designed with different light transmittance in different regions: the first region (closer to light source) has lower light transmittance to block stray light, while the second region (farther from light source) has higher light transmittance to allow useful light passage. This local differentiation resolves the contradiction by enabling a smaller light guide plate without compromising display panel size or image quality.
2Area of stationary object
If the size of the light guide plate is reduced, then the display apparatus size is reduced, but light distribution uniformity and image quality deteriorate
Solution Approach 1:
The support member implements spatially varying light transmittance with the first region having lower transmittance and the second region having higher transmittance. This local quality differentiation compensates for the reduced light guide plate size by strategically controlling light distribution, thereby maintaining uniformity and image quality despite the smaller overall size.
Solution Approach 2:
The support member acts as an intermediary element between the light source and the display panel. By positioning this mediator with specific light transmittance characteristics in different regions, it regulates and optimizes light distribution, enabling the system to achieve uniform illumination even with a reduced light guide plate size.
3Area of stationary object
If the light guide plate size is reduced to enable a larger display panel, then the display panel area increases, but light leakage occurs
Solution Approach 1:
The support member's first region (closer to the light source) is designed with lower light transmittance to specifically block stray light and prevent light leakage. This local quality control allows the light guide plate to be reduced in size while enabling a larger display panel without suffering from light leakage problems.
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 reduces the size of the light guide plate, enabling a larger display panel with improved image quality by uniformly distributing light and preventing light leakage, thus enhancing the overall display apparatus efficiency.
Implementation Method 1
an edge-lit type backlight unit including a light source disposed on a lateral surface of a light guide plate that is disposed behind a display panel and uniformly guides light incident on the light guide plate to the display panel through the light guide plate
Implementation Method 2
a diffusion plate disposed between the display panel and the light guide plate
Implementation Method 3
a light transmittance of a portion of the at least one support member at a side of the support member facing the light source is different from a light transmittance of a remaining portion of the at least one support member
Data Source
AI summary
A display apparatus is provided. The display apparatus includes a display panel; a light guide plate configured to guide light to the display panel and disposed behind the display panel; a light source configured to emit light to a lateral surface of the light guide plate; a diffusion plate disposed between the display panel and the light guide plate; and at least one support member configured to support the diffusion plate and disposed to pass through the light guide plate, wherein a light transmittance of a portion of the at least one support member at a side of the support member facing the light source is different from a light transmittance of a remaining portion of the at least one support member.