LED Light Source Module Layout for Display ESD Protection
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Solution Overview
Problem
Existing display apparatuses face issues with static electricity damaging light sources, particularly as the number of light sources increases, leading to a narrow area for electrostatic discharge protection circuits like Zener diodes, which is inefficient.
Innovation Solution
A display apparatus design featuring a reflective sheet with holes exposing light sources, a board with insulating domes and antistatic pads, and a light source module without Zener diodes, utilizing antistatic members to prevent static electricity damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light emitting diode is mounted on a board with connection pads in a hole of a reflective sheet, then the light emitting diode can be electrically connected and protected, but static electricity may damage the light emitting diode during assembly and transportation
Solution Approach 1:
An antistatic pad is introduced as an intermediary element between the feed pad and the light emitting diode. This antistatic pad serves as a mediator that dissipates static electricity through electrical conduction, preventing static damage to the light emitting diode while maintaining the electrical connection functionality. The antistatic pad is positioned to contact both the feed pad and the reflective sheet, creating a safe discharge path for static charges.
2Productivity
If the light source module structure is simplified for easy assembly, then assembly efficiency improves, but static electricity protection may be compromised
Solution Approach 1:
The antistatic pad is designed to serve multiple functions simultaneously: it provides electrical conduction for static dissipation, maintains structural integrity of the light source module, and facilitates assembly through its integration with existing components. By making the antistatic pad multi-functional, the design achieves both assembly efficiency and static protection without requiring complex additional structures.
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 design effectively prevents static electricity damage to light sources by using antistatic members, ensuring reliable operation without the need for Zener diodes, thus maintaining the display's functionality and reducing the occupied area.
Implementation Method 1
a reflective sheet in which a hole is formed
Data Source
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AI summary
Provided is a light apparatus including: a reflective sheet in which a hole is formed; and a light source module exposed through the hole. The light source module may include a board aligned in parallel with the reflective sheet, wherein a first surface of the board is toward the reflective sheet, a light emitting diode positioned in an area defined by the hole on the first surface of the board, a feed pad positioned on the first surface of the board and contacting the light emitting diode, an insulating dome positioned in the area defined by the hole on the first surface of the board and covering the light emitting diode, and at least one antistatic pad positioned in the area defined by the hole on the first surface of the board, without contacting the light emitting diode.