Display Device Spacer Design for Cost Reduction
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Solution Overview
Problem
Current display devices require a plastic member between the display panel and the light source assembly, increasing manufacturing costs and complexity.
Innovation Solution
A display device design that eliminates the need for a conventional plastic member by using spacers of different thicknesses on either side of the display panel, with the first spacer disposed between the display panel and the light source assembly, and the second spacer on the opposite side, both made from UV curable resin glue with light-shielding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plastic member is disposed between the display panel and the light source assembly, then multiple films can be fixed and the display panel can be loaded, but the manufacturing cost and number of steps increase
Solution Approach 1:
The patent combines the functions of the plastic member (fixation and loading) into the spacer structure itself. The spacer is designed with protrusions that extend into grooves of the display panel, integrating both the fixation function for optical films and the loading function for the display panel into a single component, thereby eliminating the need for a separate plastic member and reducing manufacturing steps
Solution Approach 2:
The spacer is designed to perform multiple functions: it provides fixation for multiple optical films through its protrusions engaging with grooves, serves as a loading structure for the display panel, and maintains the spacing between the display panel and light source assembly. This multi-functional design replaces the conventional plastic member's functions without requiring an additional component
2Reliability
If a plastic member is disposed between the display panel and the light source assembly, then fixation is provided, but the manufacturing cost increases
Solution Approach 1:
The fixation function previously requiring a separate plastic member is merged into the spacer structure. The spacer's protrusions engage with grooves on the display panel to provide fixation, eliminating the need for an additional plastic member and reducing overall manufacturing cost while maintaining reliable fixation
3Reliability
If spacers of different thicknesses are used on either side of the display panel, then effective fixation and light-shielding are maintained, but the structure becomes more complex
Solution Approach 1:
The spacer is designed with different thicknesses at different locations: the first spacer near the light source assembly has a greater thickness to provide effective light-shielding and fixation, while the second spacer on the opposite side has a smaller thickness. This local variation in thickness optimizes the light-shielding performance where needed while reducing unnecessary material and complexity in other areas
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 reduces manufacturing costs and complexity by eliminating the need for plastic members, while maintaining effective fixation and light-shielding properties, and provides a buffer to prevent image quality issues due to thermal expansion of optical films.
Implementation Method 1
both made from UV curable resin glue with light-shielding properties
Implementation Method 2
provides a buffer to prevent image quality issues due to thermal expansion of optical films
Data Source
AI summary
A display device is provided. The display device includes a display panel that has a polarizer, a light source assembly, a first spacer, and a second spacer. The first spacer is disposed on the first side of the display panel near the light source assembly. The first spacer is located between the display panel and the light source assembly. The second spacer is disposed on the second side of the display panel, away from the light source assembly. The thickness of the first spacer is different than that of the second spacer.