Optical Sheet Wing Overlap for Precise Display Assembly
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Solution Overview
Problem
Existing display apparatuses face challenges in improving the assemblability of optical members, which affects the overall assembly process and display quality.
Innovation Solution
The display apparatus incorporates a design where optical sheets have wing portions with varying lengths, allowing them to overlap and engage with the light guide plate's assembling portions, secured by adhesive members, creating a stable structure that enhances assembly precision and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If optical sheets are assembled using conventional methods, then the assembly process is simple, but the assemblability and alignment precision of optical members deteriorates
Solution Approach 1:
The optical sheets are divided into a body portion and a wing portion, where the wing portion extends from the body to overlap with the non-display area. This segmentation allows the optical sheets to be assembled in a specific sequence (first optical sheet, then second optical sheet) with improved alignment precision, while the wing portions provide engagement features that simplify the overall assembly process.
Solution Approach 2:
The wing portions of the optical sheets extend in the first direction (length direction) and overlap with the non-display area, creating a multi-layered structure in the stacking direction (second direction). This dimensional arrangement allows the wing portion of the first optical sheet to be entirely overlapped by the wing portion of the second optical sheet, improving assemblability and alignment precision through spatial arrangement.
2Reliability
If optical sheets have uniform wing portions, then the structure is simple, but the assemblability and stability of optical members deteriorates
Solution Approach 1:
The optical sheets have asymmetric wing portions where the length of the wing portion in the second direction varies between the first and second optical sheets. Specifically, the wing portion of the first optical sheet is entirely overlapped by the wing portion of the second optical sheet, creating an asymmetric configuration that improves assembly stability and reliability while maintaining structural clarity.
3Manufacturing precision
If multiple optical members are assembled in a stack, then the display quality improves, but the difficulty of assembly and alignment increases
Solution Approach 1:
The wing portions of the optical sheets are designed in advance with specific length variations and overlap relationships. The first optical sheet's wing portion is configured to be entirely overlapped by the second optical sheet's wing portion, creating preliminary alignment features that guide the assembly process and improve assembly precision while maintaining ease of operation.
Data Source
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AI summary
A display apparatus is disclosed, the display apparatus includes a light source generating a light, a display panel receiving the light from the light source and including a display area displaying an image and a non-display area disposed adjacent to the display area, and first and second optical sheets disposed under the display panel. Each of the first and second optical sheets includes a body portion overlapped with the display area and a wing portion connected to one side portion of the body portion in the first direction to overlap with a portion of the non-display area. A length of the wing portion of the first optical sheet in the second direction is shorter than a length of the wing portion of the second optical sheet in the second direction, and the wing portion of the first optical sheet is entirely overlapped with the wing portion of the second optical sheet.