Watch Display Light Guide Plate Convex Portion Mounting Area
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Solution Overview
Problem
Conventional display devices for wristwatches face challenges in securing a mounting area between the circuit board and the light guide plate, leading to difficulties in assembly and potential impact on functionality and miniaturization.
Innovation Solution
The display device incorporates a light guide plate with a convex portion and a slope portion, allowing electronic components to be arranged such that they are spaced apart from the light guide plate, with at least one component positioned overlapping the slope portion, creating distinct mounting regions that enhance the mounting area and impact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If electronic components are arranged close to the light guide plate to maximize mounting area, then the mounting area is increased, but the impact resistance is reduced
Solution Approach 1:
The light guide plate is segmented into a plate portion and a convex portion, creating distinct spatial zones. The plate portion provides a mounting area spaced from the circuit board, while the convex portion with its slope and side face portions creates additional mounting regions that are spatially separated, allowing components to be arranged at different distances from the light guide plate.
Solution Approach 2:
The convex portion protrudes from the plate portion in the thickness direction, adding a vertical dimension to the mounting space. This three-dimensional structure allows electronic components to be arranged not only in the horizontal plane but also at different vertical levels, effectively utilizing space in multiple dimensions to achieve both large mounting area and adequate impact resistance.
2Reliability
If the light guide plate is made thicker to improve impact resistance, then the impact resistance is increased, but the mounting area is reduced
Solution Approach 1:
The light guide plate is divided into a plate portion and a convex portion, where the convex portion extends in the thickness direction. This segmentation allows the overall structure to achieve adequate thickness for impact resistance while the plate portion maintains a sufficient distance from the circuit board, preserving the mounting area.
Solution Approach 2:
The convex portion is nested within the overall light guide plate structure, with the slope portion and side face portion creating a stepped configuration. This nested arrangement allows the light guide plate to have increased thickness in specific regions for impact resistance without proportionally reducing the mounting area, as the convex portion utilizes vertical space rather than horizontal space.
3Reliability
If the distance between the light guide plate and circuit board is increased to improve impact resistance, then the impact resistance is increased, but the mounting area is reduced
Solution Approach 1:
The convex portion protrudes in the thickness direction, creating a vertical dimension for mounting space. This allows electronic components to be arranged in the vertical direction on the slope and side face portions, effectively utilizing three-dimensional space to achieve both adequate spacing for impact resistance and sufficient mounting area.
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 configuration effectively secures a larger mounting area, improves impact resistance, and enables higher functionality and miniaturization of the display device while allowing for the arrangement of both high and low-height electronic components.
Implementation Method 1
a light guide plate including a plate portion arranged to face the component unit; and a convex portion protruding from the plate portion toward the component unit and having a side face portion facing the light emitting body and a slope portion facing the component unit
Implementation Method 2
a light guide plate including a plate portion arranged to face the component unit; and a convex portion protruding from the plate portion toward the component unit and having a side face portion facing the light emitting body and a slope portion facing the component unit
Data Source
AI summary
A display device includes: a light emitting body; a component unit having a plurality of electronic components;and a light guide plate including a plate portion arranged to face the component unit; and a convex portion protruding from the plate portion toward the component unit and having a side face portion facing the light emitting body and a slope portion facing the component unit, in which the plurality of electronic components are arranged to be spaced apart from the light guide plate in a facing direction, and at least one of the electronic components is arranged at a position overlapping the slope portion as viewed from a normal direction of the plate portion.