Light Source Package Recessed Circuit Board Slim Display
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Solution Overview
Problem
Existing display apparatuses with back light units face challenges in achieving a slim and thin design due to the need for spacing between light emitting diodes and light guide plates to prevent heat-induced deformation, which limits the compactness of the display.
Innovation Solution
A display apparatus design featuring a light source package with a mold and radiation member that allows for a reduced distance between the light source and the light guide plate, utilizing a recessed region on the circuit board to position the light source package close to the light guide plate while effectively radiating heat away from it, thus minimizing the overall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the light guide plate is spaced apart from the light emitting diodes, then the light guide plate is protected from heat-induced deformation, but the thickness of the display apparatus increases
Solution Approach 1:
The patent introduces a recessed region that segments the circuit board structure, creating a localized depression area. This segmentation allows the light guide plate to be positioned close to the light emitting diodes in the recessed region while maintaining thermal protection through the recessed structure, thereby resolving the contradiction between heat protection and thinness.
Solution Approach 2:
The recessed region is designed in advance to pre-counteract the harmful thermal effects. By creating the recessed structure beforehand, the light guide plate can be positioned close to the light emitting diodes without being directly exposed to heat, as the recessed region provides thermal isolation while enabling close proximity positioning.
2Length of moving object
If the light source package is positioned close to the light guide plate, then the display apparatus becomes thinner, but heat dissipation becomes more difficult
Solution Approach 1:
The patent applies local quality by creating a recessed region with specific thermal properties. The recessed region provides localized heat dissipation pathways and thermal management characteristics that differ from the surrounding areas, allowing the light source package to be positioned close to the light guide plate while maintaining effective heat dissipation through the specially designed recessed 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
This design enables a slim display apparatus by reducing the distance between the light source package and the light guide plate, enhancing light efficiency and preventing deformation of the light guide plate due to heat, while maintaining effective heat dissipation.
Implementation Method 1
a radiation member combined with the mold and the circuit board to conduct heat from the light source to the circuit board
Implementation Method 2
The light source may emit light through the window
Data Source
AI summary
Display apparatuses are provided. The display apparatus includes a light source package generating light, a circuit board including a recessed region in which the light source package is disposed, a display panel displaying images, and a light guide plate directing the light generated from the light source package onto the display panel. The light guide plate includes a top surface, a bottom surface, and a plurality of sidewall surfaces. One of the sidewall surfaces of the light guide plate is a light incident surface on which the light from the light source package is irradiated. A distance between the light source package and the light incident surface is less than a width of the circuit board.