Display Unit Cover Glass Positioning with L-Shaped Bonding Frame
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Solution Overview
Problem
Existing display units with electro-optical displays and cover glasses face challenges in maintaining a precise gap for optical clarity and simplicity in construction, often requiring complex spacers that cause visual impairments.
Innovation Solution
A method involving a positioning device with support surfaces and an L-shaped bonding frame, where the cover glass and bonding frame are precisely positioned and glued, eliminating the need for spacers and ensuring a defined gap for the bonding compound, allowing for easy assembly and optical clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spacers are used to maintain the gap between cover glass and electro-optical display, then the gap can be precisely maintained, but the construction becomes complex and visual impairments occur
Solution Approach 1:
The invention extracts and eliminates the spacer component from the display structure. Instead of using separate spacer elements, the bonding frame itself is designed with an integrated gap-forming structure that directly creates the required spacing between the cover glass and electro-optical display through its L-shaped leg configuration
Solution Approach 2:
The invention merges the gap-maintenance function with the bonding frame structure. The bonding frame's leg is designed to simultaneously provide structural support, define the gap distance, and enable precise positioning of the cover glass, combining multiple functions into a single integrated component
2Manufacturing precision
If spacers are used to maintain the gap between cover glass and electro-optical display, then the gap can be precisely maintained, but visual impairments occur in the observable area
Solution Approach 1:
The invention removes the spacer component that causes visual impairments from the observable display area. The gap is maintained through the bonding frame structure positioned at the peripheral edge, keeping the observable area clear of any spacer elements that would create visual disturbances
3Device complexity
If a bonding frame with L-shaped leg is used to define the gap, then the construction is simplified and visual impairments are eliminated, but precise positioning must be achieved through the positioning device
Solution Approach 1:
The invention implements preliminary action through the positioning device that pre-establishes the correct spatial relationship between the cover glass and bonding frame before final assembly. The positioning device with its support surfaces prepares the components in advance, ensuring precise positioning is achieved before the bonding adhesive sets
Solution Approach 2:
The positioning device serves as an intermediary tool that facilitates precise positioning during assembly. It provides temporary support and alignment functions during the manufacturing process, enabling the bonding frame's L-shaped leg to achieve the required positioning precision without requiring complex built-in positioning mechanisms in the final product
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method simplifies the construction and assembly of display units, eliminates visual impairments, and maintains optical clarity by using a positioning device and L-shaped bonding frame to create a defined gap for the bonding compound, resulting in a compact, low-weight, and easy-to-assemble display device with minimal light reflection.
Implementation Method 1
the groove between the cover glass and the leg of the bonding frame is then filled with a first adhesive that connects these two parts to one another
Implementation Method 2
a layer of transparent bonding compound being arranged between the electro-optical display and the cover glass
Implementation Method 3
a second adhesive directly or indirectly connecting the electro-optical display with the bonding frame between the peripheral edge region of the electro-optical Display and the bonding frame is introduced
Data Source
Figure 1~4
Figure 5~8
AI summary
The invention relates to a method for producing a display unit that has an electro-optical display having a covering glass (3) arranged in front of the electro-optical display on an observer side, wherein a layer of transparent bonding mass (13) is arranged between the electro-optical display and the covering glass (3). According to the invention the covering glass (3) is inserted into a first holder of a positioning device (1) until the covering glass lies on a first contact surface (5) parallel to the plane of the covering glass (3), that thereafter the bonding frame (8) is inserted into a second holder of the positioning device (1) until the bonding frame lies on a second contact surface (6) parallel to the plane of the first contact surface (5), that the bonding frame (8) has a leg (9) parallel to the covering glass (3), the peripheral edge of which leg directed toward the covering glass (3) surrounds the peripheral edge of the covering glass (3) at a distance (11) that forms a groove (10), that thereafter the groove (10) between the covering glass (3) and the leg (9) of the bonding frame (8) is filled with a first adhesive (12) that connects these two parts to each other, and that thereafter the surface of the covering glass (3) facing away from an observer is covered with the layer of transparent bonding mass (13).