Curved Display Backlight Alignment via Nested Bottom Cover
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Solution Overview
Problem
Existing curved display apparatuses face challenges in assembly and reliability due to misalignment of light source and light guide parts, which affects the uniformity and efficiency of light distribution to the display panel.
Innovation Solution
The design incorporates a bottom cover with a bent structure that creates an engaging space for the light source and light guide parts, allowing them to be easily aligned and fixed, with a printed circuit board and light emitting diodes arranged to face the light incident surface, ensuring proper light emission and guidance to the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the light source part and light guide part are disposed separately without a dedicated engaging space, then the assembly structure is simpler, but misalignment occurs between the light source and light guide parts affecting light distribution uniformity
Solution Approach 1:
The light source part and light guide part are nested within the engaging space formed by the bottom portion, sidewall portion, and ceiling portion of the bottom cover. This nesting structure ensures precise alignment and positioning of the optical components while integrating them into a compact assembly unit.
Solution Approach 2:
The engaging space acts as an intermediary structure that mediates the relationship between the light source part and light guide part. By providing a dedicated engagement region with specific geometric constraints, it ensures proper positioning and alignment of both components without requiring complex external fixing mechanisms.
2Manufacturing precision
If the bottom cover is designed with a complex engaging space structure, then the alignment of light source and light guide parts is improved, but the manufacturing process becomes more difficult
Solution Approach 1:
The bottom cover is segmented into three distinct functional portions: the bottom portion for support, the sidewall portion for lateral confinement, and the ceiling portion for upper boundary definition. This segmentation allows each portion to be manufactured and positioned independently, simplifying the overall manufacturing process while achieving precise alignment through the collective engagement space.
Solution Approach 2:
The sidewall portion is designed with a bent or curved geometry that transitions from the bottom portion to the ceiling portion. This curved structure provides smooth transitions and natural positioning surfaces that facilitate assembly while maintaining structural integrity, reducing manufacturing complexity compared to sharp angular joints.
3Productivity
If the light source part is not properly positioned relative to the light guide part, then the assembly is faster, but light distribution uniformity and efficiency deteriorate
Solution Approach 1:
The engaging space is pre-formed in the bottom cover with specific dimensional relationships (first distance between bottom portion and ceiling portion, second distance from sidewall to ceiling portion) that automatically ensure correct positioning of the light source and light guide parts during assembly. This preliminary structuring eliminates the need for complex alignment procedures during assembly, maintaining high assembly speed while ensuring reliable light distribution.
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 enhances the assembly process, prevents misalignment, and improves light distribution, resulting in improved reliability and performance of the curved display apparatus.
Implementation Method 1
a plurality of light emitting diodes disposed on the printed circuit board
Implementation Method 2
a light guide part which guides the light emitted from the light source part to the display panel
Data Source
AI summary
A display apparatus includes a display panel including a display area with a curved surface, a backlight assembly which provides light to the display panel, and a bottom cover which accommodates the display panel and the backlight assembly. The bottom cover includes a bottom portion, a sidewall portion bent from a side portion of the bottom portion, and a ceiling portion bent from the sidewall portion to face the bottom portion. The backlight assembly includes a light source part disposed in an engaging space defined by the bottom portion, the sidewall portion, and the ceiling portion to emit the light, and a light guide part which guides the light emitted from the light source part to the display panel.