Watch Display Light Guide Plate Spacer and Diffuser
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Solution Overview
Problem
Conventional display devices for wristwatches, where an LCD, light guide plate, and reflection plate are stacked and face a circuit board, are prone to detachment due to impacts, affecting electronic components.
Innovation Solution
A display device configuration that includes a light-transmitting diffusion plate between the light guide plate and the LCD, with spacers on the circuit board to regulate the distance and ensure stable fixation, preventing detachment and improving uniform light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the LCD, light guide plate, and reflection plate are stacked and arranged to face the circuit board, then the display device can be compact, but the components are prone to detachment due to impacts
Solution Approach 1:
The patent introduces a cushioning layer between the circuit board and the light guide plate to absorb impact forces before they reach the stacked components. This cushioning structure prevents detachment by mitigating shock effects in advance, resolving the contradiction between compact stacking and impact resistance.
Solution Approach 2:
The patent employs an intermediary cushioning layer as a mediator between the circuit board and the light guide plate. This intermediary structure decouples the direct connection between components, allowing compact stacking while preventing impact-induced detachment through the buffer zone it creates.
2Device complexity
If the light guide plate is arranged close to the circuit board, then the device structure is simplified, but the light emission uniformity deteriorates
Solution Approach 1:
The cushioning layer serves as an intermediary optical element between the circuit board and light guide plate. While maintaining close proximity for structural simplicity, it introduces optical diffusion properties that improve light emission uniformity, thus resolving the contradiction between simplified structure and uniform illumination.
Solution Approach 2:
The patent changes the optical parameters of the interface between components by introducing the cushioning layer. This modifies light transmission characteristics to achieve uniform emission, resolving the contradiction without increasing structural complexity.
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
The configuration stabilizes the LCD and light guide plate, preventing detachment and enhancing the uniformity and luminance of light emission, thus improving the display's reliability and appearance.
Implementation Method 1
a light-transmitting plate having light transmissivity, arranged between the light guide plate and the display portion
Data Source
AI summary
A display device includes: a circuit board on which a plurality of electronic components are arranged; a light guide plate arranged to face the plurality of electronic components; a display portion arranged on an opposite side to the circuit board of the light guide plate in such a manner as to face the light guide plate; a light-transmitting plate having light transmissivity, arranged between the light guide plate and the display portion, and configured to be in contact with a front surface of the light guide plate and a back surface of the display portion; and a spacer provided on a front surface of the circuit board and configured to regulate a distance between the circuit board and the light guide plate.