Vehicle Display Light Sensor Bezel Integration
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Solution Overview
Problem
Existing display devices for vehicles face challenges in accurately recognizing proximity touches due to limitations in resolution and viewing angle, leading to increased device size and design constraints, especially when integrated with touch panels and 3D interaction technologies.
Innovation Solution
A display device with a light sensor unit disposed at an angle and integrated with the bezel frame, featuring a concave lens to enhance light transmission and reduce the number of light output and receiving units, allowing for precise proximity touch recognition even in vibrating vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If general sensors (camera-based or ultrasound-based) are used for 3D interaction and proximity space recognition, then sensing capability is provided, but the display device size increases and design is constrained due to the need for separate sensor disposal space
Solution Approach 1:
The patent integrates the light sensor unit directly into the touch window structure, merging the sensing function with the existing display component. The light sensor unit is disposed at an angle within the unactive area of the touch window, eliminating the need for separate sensor disposal space and reducing overall device size while maintaining proximity sensing capability
Solution Approach 2:
The touch window serves multiple functions: it acts as both the display interface and houses the light sensor unit for proximity sensing. This multi-functional integration allows the same structural element to provide both visual output and spatial recognition, reducing the need for additional dedicated sensor components
2Area of stationary object
If light sensor unit is integrated with bezel frame, then device size is reduced, but support stability may be compromised
Solution Approach 1:
The light sensor unit is nested within the unactive area of the touch window, which is itself integrated with the bezel frame structure. This nested arrangement allows the sensor to be housed within existing structural boundaries, reducing overall bezel size while utilizing the inherent structural support of the multi-layered assembly
Solution Approach 2:
The light sensor unit is disposed at an angle (inclined) relative to the top surface of the touch window, utilizing three-dimensional space within the unactive area. This angular positioning allows effective light transmission to the active area while maintaining compact integration within the bezel frame structure
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 solution enables high-resolution proximity touch sensing, reduces the size of the bezel, decreases manufacturing costs, and provides stable support for the light sensor unit, making it suitable for vehicle displays while maintaining precision in 3D interaction.
Implementation Method 1
at least one light receiving unit that receives light reflected from a user input tool
Implementation Method 2
a lens of a light sensor unit includes a concave surface and thus enables light to be evenly transmitted onto an active area
Data Source
AI summary
A display device including a touch window including an active area and an unactive area around the unactive area; a display unit disposed under the touch window; a bezel frame configured to support the display unit; and a light sensor unit disposed on a side of the bezel frame and at an angle to a top surface of the touch window under the unactive area of the touch window and including at least one light output unit configured to output light and at least one light receiving unit configured to receive light reflected from an input tool.