Display Device Light Source Substrate Bonding Heat Vibration
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Solution Overview
Problem
Existing display apparatuses face challenges in heat radiation and non-coplanarity due to the incomplete contact between the light source substrate and the bottom chassis, leading to vibration and noise issues.
Innovation Solution
The display apparatus enhances heat radiation and reduces vibration by closely bonding the reflection sheet, light source substrate, and bottom chassis using a bonding member to ensure seamless contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws or bonding members are used to install the light source substrate onto the bottom chassis, then the light source substrate can be fixed, but a large space or a large number of processes are required for the installation
Solution Approach 1:
The patent combines the light source substrate and bottom chassis into an integrated structure where the light source substrate is formed as a protrusion extending from the bottom chassis. This merging eliminates the need for separate fixing mechanisms like screws or bonding members, thereby reducing installation complexity while maintaining fixing strength.
Solution Approach 2:
The bottom chassis is designed to serve multiple functions: it provides structural support, acts as a heat radiation path, and directly forms the light source substrate mounting structure through its protrusion. This multi-functionality eliminates the need for separate mounting components, reducing both space and process requirements.
2Strength
If the light source substrate is installed on the bottom chassis using screws or bonding members, then the light source substrate can be fixed, but heat radiation is difficult because the light source substrate and the bottom chassis are not in complete contact
Solution Approach 1:
By forming the light source substrate as an integral protrusion of the bottom chassis, the patent ensures complete contact between the two components. This merged structure provides both mechanical fixation and continuous thermal conduction path, simultaneously achieving fixing strength and effective heat radiation without gaps.
Solution Approach 2:
The light source substrate protrusion acts as an intermediary structure that connects the light sources to the bottom chassis. It serves dual purposes: mechanically supporting the light sources while providing a continuous thermal conduction path for heat radiation from the light sources through the protrusion to the bottom chassis.
3Strength
If the light source substrate is installed on the bottom chassis using screws or bonding members, then the light source substrate can be fixed, but the space between the light source substrate and the bottom chassis causes vibration and noise
Solution Approach 1:
The patent merges the light source substrate and bottom chassis into a single integrated structure with the light source substrate formed as a protrusion. This eliminates gaps and spaces between components, thereby preventing vibration and noise generation while maintaining structural fixation strength.
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 improves heat radiation characteristics and minimizes vibration and noise by ensuring smooth heat transfer and alignment between the reflection sheet, light source substrate, and bottom chassis.
Implementation Method 1
closely bonding the reflection sheet, the light source substrate and the bottom chassis... smooth heat transfer
Data Source
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AI summary
A display apparatus includes a display panel; a bottom chassis provided behind the display panel; a reflection sheet provided between the display panel and the bottom chassis; a plurality of light source substrates provided between the reflection sheet and the bottom chassis, each of the plurality of light source substrates having a bar shape extending in a first direction; a plurality of light sources mounted on the plurality of light source substrates and configured emit light toward the display panel; and a bonding member bonding the plurality of light source substrates to the bottom chassis, wherein the bonding member extends in a second direction, which is different from the first direction, so that the plurality of light source substrates are arranged in the second direction on the bottom chassis.