Display Device Light Guide Plate Supporting Portion Assembly
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Solution Overview
Problem
The manufacturing process of liquid crystal display (LCD) devices becomes complicated due to numerous components, leading to increased manufacturing time and cost, and the bottom chassis's tendency to tilt and contact the display panel, causing display stains and quality deterioration.
Innovation Solution
A display device design featuring a light guide plate with a supporting portion for the circuit board, a molding member between the display panel and light guide plate, and a covering member that fixes all components together, eliminating the need for a bottom chassis and reducing component space and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the LCD device includes many components (light guide plate, fixing member, receiving member, mold frame, middle chassis, display panel, panel guide member), then the structural stability and functionality are improved, but the manufacturing process becomes complicated and the manufacturing time and cost increase
Solution Approach 1:
The patent combines multiple separate components (bottom chassis, receiving member, and light guide plate) into an integrated assembly where the light guide plate is directly mounted on the bottom chassis to form a unified structural unit. This merging eliminates the need for separate fixing members and receiving members, simplifying the manufacturing process while maintaining structural stability and functionality.
2Adaptability or versatility
If the bottom chassis has an engaging portion that protrudes outside the boundaries for assembling body set and printed board assembly, then the adaptability and assembly capability are improved, but the bottom chassis transforms entirely under pressure causing display stains and quality deterioration
Solution Approach 1:
The patent segments the engaging portion function from the bottom chassis by providing a dedicated engaging structure on the light guide plate assembly. This allows the engaging function to be performed separately from the bottom chassis, preventing the chassis from transforming under pressure and causing display stains, while still maintaining the necessary assembly capability for body set and printed board assembly.
3Ease of manufacture
If the bottom chassis is used to support the light guide plate and receive the reflection sheet and optical sheet, then the structural support and component receiving functions are improved, but the chassis bending and transformation occur leading to display panel contact and quality deterioration
Solution Approach 1:
The patent introduces the light guide plate assembly as an intermediary structure between the bottom chassis and the display panel. This intermediary structure provides the necessary support and component receiving functions while preventing direct contact between the bottom chassis and display panel, thereby eliminating the harmful effect of chassis bending on display quality.
Data Source
AI summary
A display device having a simplified assembly of components. The display device includes a display panel, a circuit board, a light guide plate disposed under the display panel to guide a light toward the display panel, a molding member disposed between the display panel and the light guide plate, and a covering member extending from a lower surface of the light guide plate to an upper surface of the display panel. The light guide plate has a supporting portion that protrudes from a side surface of the light guide plate to support the circuit board disposed adjacent to an edge of the display panel. The molding member supports the display panel. The covering member fixes the components of the display device. This way a display device is provided that does not need a bottom chassis, thereby the assembling of the display panel is simplified.