Guide Panel and Cover Bottom Design for Thin LCD Stability
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Solution Overview
Problem
Existing liquid crystal displays face challenges in achieving a thin profile while maintaining the stability of optical sheets and light guide plates, which are prone to movement due to external factors like temperature and vibration, leading to poor image quality and reliability issues.
Innovation Solution
A display device design featuring a cover bottom with a horizontal and vertical portion, a guide panel with a liquid crystal display panel supporter, and a guide holder with bosses and stoppers to securely position the optical sheet and light guide plate, along with an adhesive layer to ensure stability and prevent movement, allowing for a thin profile without compromising optical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If many components (case members, optical sheets, light guide plate) are included to form a liquid crystal module, then the liquid crystal display can function properly, but the display becomes thick and heavy
Solution Approach 1:
The guide panel and cover bottom are merged into a single integrated component. The guide panel includes an extension that protrudes from its rear surface to form a cover bottom portion, eliminating the need for separate case members and reducing overall display thickness while maintaining functional completeness
Solution Approach 2:
The guide panel serves multiple functions: it supports the liquid crystal display panel, guides the optical sheet, and provides the cover bottom structure. This multi-functionality reduces the number of components needed, achieving both thin profile and reliable operation
2Ease of manufacture
If optical sheets and light guide plate are freely accommodated in case members, then assembly is easy, but the components expand, contract, or move due to temperature change, moisture change, external impact, and vibration
Solution Approach 1:
The optical sheet is nested within the guide panel structure, with the extension of the guide panel forming a cover bottom that accommodates the optical sheet. This nested arrangement provides inherent positioning and protection against environmental factors while maintaining easy assembly
Solution Approach 2:
The extension of the guide panel acts as an intermediary structure between the optical sheet and the external environment. It provides a protective interface that isolates the optical sheet from temperature changes, moisture, impact, and vibration while maintaining assembly simplicity
3Adaptability or versatility
If optical sheets and light guide plate move due to external factors, then the components can adapt to environmental changes, but the components may be damaged and optical characteristics change
Solution Approach 1:
The extension of the guide panel forms a protective shell structure that encloses the optical sheet. This flexible yet protective structure allows the system to adapt to environmental changes while preventing damage to the optical components and maintaining stable optical characteristics
Data Source
AI summary
A display device includes a cover bottom, a guide panel, and a guide holder. The cover bottom includes a horizontal portion covering a back surface of a light guide plate and a vertical portion extended from the horizontal portion that covers a side of the light guide plate. The guide panel includes a liquid crystal display panel supporter disposed under a liquid crystal display panel and positioned on the same plane as an optical sheet in parallel with the optical sheet, and an extension that is extended from the liquid crystal display panel supporter that covers the vertical portion. The guide holder is disposed between the light guide plate and the vertical portion. The optical sheet includes a protrusion protruding toward the vertical portion. The guide holder includes a body, a stopper protruding from the body, and a first boss protruding from the body.