Light-Emitting Module with Light Absorption Portion for Narrow Bezel Displays
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Solution Overview
Problem
In super narrow bezel display apparatuses, the reduced distance between the light source and the light guide plate leads to light reflection and leakage, resulting in decreased display quality due to hot spots and luminance irregularities.
Innovation Solution
A light-emitting module with a printed circuit board (PCB) featuring a light absorption portion, typically made of black material, is integrated to absorb reflected light, and a light reflection portion, made of white material, is used between light sources to enhance light distribution and reduce leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the distance between the light source and the light guide plate is decreased to achieve a super narrow bezel, then the bezel width is reduced, but light reflection and leakage occur causing hot spots and luminance irregularities
Solution Approach 1:
A light absorption portion is introduced as an intermediary element between the light source and light guide plate. This light absorption portion absorbs the light that would otherwise be reflected by the light guide plate, preventing light leakage and eliminating hot spots while maintaining the narrow bezel design
Solution Approach 2:
The invention converts the harmful reflected light into a beneficial effect by using the light absorption portion to capture the reflected light. Instead of allowing the reflected light to cause hot spots and luminance irregularities, it is absorbed and converted into heat, thereby eliminating the harmful effects while maintaining the narrow bezel 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
The solution effectively absorbs reflected light, preventing leakage and enhancing display quality by reducing hot spots and improving luminance uniformity.
Implementation Method 1
a light absorption portion on the first surface of the PCB and absorbing the light
Implementation Method 2
a light reflection portion on the first surface of the PCB and between the light sources
Data Source
AI summary
A light-emitting module includes a light source, a printed circuit board (“PCB”) and a light absorption portion. The light source generates and emits a light, and the light source is on a first surface of the PCB. The light absorption portion is on the first surface of the PCB and absorbs the light.