Display Device Diffusing Lens Mechanical Mounting
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Solution Overview
Problem
Existing display devices with diffusing lenses bonded to light-emitting element substrates using adhesive materials face issues with lens displacement and prolonged mounting times, hindering mass production efficiency.
Innovation Solution
The display device incorporates a diffusing lens with a first engaging portion for mounting and a separate first positioning portion to secure the lens on the substrate or supporting member, eliminating the need for adhesive materials and reducing mounting time by allowing for simple fitting of corresponding engaging and positioning components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the diffusing lens is bonded to the substrate through adhesive material, then the lens can be mounted on the substrate, but the lens is easily displaced before the adhesive hardens and it takes a long time to mount the lens
Solution Approach 1:
The patent replaces the chemical bonding mechanism (adhesive material) with a mechanical engagement system consisting of engaging portions and engaging holes. The diffusing lens includes engaging portions that fit into corresponding engaging holes on the substrate, providing immediate mechanical stability without requiring adhesive hardening time. This mechanical substitution eliminates the waiting period while ensuring reliable positioning.
Solution Approach 2:
The patent introduces engaging portions and engaging holes as intermediary mechanical features that facilitate the connection between the diffusing lens and substrate. These intermediaries provide a dedicated mechanical interface that ensures proper positioning and prevents displacement during assembly, replacing the need for adhesive materials and their associated timing constraints.
2Reliability
If adhesive material is used to bond the diffusing lens, then the lens can be fixed to the substrate, but the mounting process becomes complex and unsuitable for mass production
Solution Approach 1:
The patent replaces the multi-step adhesive application process with a simple mechanical engagement system. The engaging portions on the diffusing lens fit directly into engaging holes on the substrate, eliminating the need for adhesive application, positioning, and hardening time. This mechanical system is inherently simpler and more suitable for automated mass production processes.
Solution Approach 2:
The engaging portions and engaging holes are integrated directly into the diffusing lens and substrate structures, respectively. This self-contained mechanical engagement system requires no external adhesive materials or additional fixation components, making the mounting process self-sufficient and ideal for high-volume manufacturing.
Data Source
AI summary
This display device includes a display portion, a light-emitting element emitting light to the display portion, a light-emitting element substrate (62) mounted with the light-emitting element, a supporting member (63) supporting the light-emitting element substrate (62), and a diffusing lens (64) provided to cover the light-emitting element, diffusing the light from the light-emitting element. The diffusing lens (64) integrally includes a first engaging portion (64a) configured to mount the diffusing lens (64) on the light-emitting element substrate (62) or the supporting member (63) and a first positioning portion (64b) provided separately from the first engaging portion (64a), configured to position the diffusing lens (64). The supporting member (63) includes a second engaging portion (63d) corresponding to the first engaging portion (64a) of the diffusing lens (64), and the light-emitting element substrate (62) includes a second positioning portion corresponding to the first positioning portion (64b) of the diffusing lens (64).