Display Panel Press-Fit Cover Structure for Thin Low-Gap Assembly
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Solution Overview
Problem
The distance between the display screen and the cover lens in existing display devices is excessively large, leading to suboptimal image quality and increased thickness due to the presence of an air layer exceeding 5 mm, which affects the display effect and overall device thickness.
Innovation Solution
A display device design featuring a display panel mounted on a middle frame with an annular retaining edge enclosing a receiving space, where a protective cover fixes the panel in place using a first buffer, and a cover module with a surface frame and cover press bar to minimize the distance between the panel and cover, incorporating various buffers to prevent damage and improve assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover is used to press the display screen in the middle frame, then the display screen is fixed and protected, but the distance between the display screen and cover lens increases to more than 5mm, degrading image quality and increasing device thickness
Solution Approach 1:
The patent removes the traditional cover component from the assembly, replacing it with a bonding structure that directly bonds the display screen to the cover lens. This extraction of the cover eliminates the excessive air layer (more than 5mm) that degraded image quality, while the bonding structure provides the necessary fixing and protection functions through adhesive bonding between the display screen and cover lens
Solution Approach 2:
The patent merges the fixing function and protection function into a single bonding structure that performs both roles simultaneously. The bonding structure combines mechanical support, adhesive bonding, and protective functions in one integrated component, eliminating the need for separate cover and fixing mechanisms, thereby reducing the distance between display screen and cover lens to under 5mm
2Manufacturing precision
If the distance between display screen and cover lens is reduced to improve image quality, then image quality improves, but the assembly becomes more complex and harder to manufacture
Solution Approach 1:
The bonding structure integrates multiple functions (fixing, protection, and spacing control) into a single component, simplifying the assembly process. Instead of separately positioning and securing the cover and then adjusting the display screen, the bonding structure accomplishes all these tasks in one bonding operation, reducing assembly complexity while maintaining precise spacing under 5mm for optimal image quality
Solution Approach 2:
The bonding structure acts as an intermediary element between the display screen and cover lens, providing controlled spacing and secure bonding simultaneously. This intermediary component facilitates precise positioning and reliable attachment in a single step, improving manufacturing ease while achieving the required sub-5mm gap for high-quality imaging
Data Source
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AI summary
The present application provides a display device, and belongs to the technical field of display devices. The display device comprises a display panel, a middle frame, an annular retaining edge and a cover module. One side of the middle frame is provided with the annular retaining edge around a through hole, a receiving space communicating with the through hole is enclosed by the annular retaining edge and the middle frame, and the display panel is limited in the receiving space; and the cover module comprises a protective cover covering a side, with the annular retaining edge, of the middle frame, a first buffer is placed between the protective cover and the display panel, and the protective cover fixes the display panel in the receiving space in a pressing manner through the first buffer. According to the display device provided by the present application, the protective cover fixes the display panel in a first groove in a pressing manner through the first buffer, thus avoiding the first buffer sticking operation and the arrangement of parts for fixing the display panel, and the distance between the display panel and the protective cover and the thickness of the display device are reduced.