Electro-optical Device Frame Locking Pieces Spacing
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Solution Overview
Problem
In electro-optical devices like liquid crystal display devices, the existing locking mechanisms on the frame hinder the bending and positioning of wiring boards, particularly when electronic components are mounted, leading to difficulties in manufacturing and potential defects due to collision with locking pieces.
Innovation Solution
The frame is designed with horizontal and vertical locking pieces spaced apart from the corner vertices, allowing for increased positional freedom and preventing collisions, thus facilitating the bending of wiring boards and reducing stress on the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vertical locking pieces and horizontal locking pieces are provided at vertexes of corner portions of the frame, then positional deviation of the electro-optical panel is prevented, but the wiring board cannot be bent easily and electronic components collide with locking pieces
Solution Approach 1:
The locking pieces are segmented from the frame structure and positioned independently at specific locations. The vertical locking pieces are provided at corner portions in the vertical direction, while horizontal locking pieces are provided at bent portions in the horizontal direction, separating their functions and avoiding interference with wiring board bending.
Solution Approach 2:
Different locking pieces are provided at different locations of the frame based on local requirements. The vertical locking pieces are positioned at corner portions where vertical positioning is needed, while horizontal locking pieces are positioned at bent portions where horizontal positioning is needed, creating local quality variations in the frame structure.
2Stability of the object's composition
If vertical locking pieces and horizontal locking pieces are connected to each other at vertexes of corner portions, then structural stability is improved, but the wiring board bending process is hindered
Solution Approach 1:
The vertical and horizontal locking pieces are segmented as separate functional elements rather than being connected at vertexes. This segmentation allows the wiring board to be bent without encountering connected locking structures, while each locking piece independently maintains its positioning function.
3Reliability
If locking pieces are provided at corner portions to prevent positional deviation, then panel positioning is secure, but electronic components mounted on wiring board collide with locking pieces
Solution Approach 1:
The frame structure acts as an intermediary that positions locking pieces away from the wiring board bending path. The vertical locking pieces are positioned at corner portions while horizontal locking pieces are positioned at bent portions, creating spatial separation that prevents direct contact between locking pieces and electronic components during wiring board bending.
Data Source
AI summary
An electro-optical device includes a bent wiring board that is connected to an electro-optical panel; a frame that supports the electro-optical panel; when a direction where sides of the electro-optical panel connected to the wiring board extends is set to a first direction and a direction perpendicular to the first direction is set to a second direction, first direction holding pieces which prevent positional deviation of the electro-optical panel in the first direction, the first direction holding pieces being provided at both corner portions of the frame corresponding to a bent portion of the wiring board; and second direction holding pieces which prevent positional deviation of the electro-optical panel in the second direction, the second direction holding pieces being provided at both the corner portions of the frame corresponding to the bent portion of the wiring board. Further, in at least one of both the corner portions, at least one of the first direction holding pieces and the second direction holding pieces is provided so as to be spaced apart from a vertex of the corresponding corner portion.