Touch Key Window Overlap Layout to Reduce Display Dead Space
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Solution Overview
Problem
Conventional display devices with touch emitting key units suffer from increased dead space due to the side-by-side installation of the touch emitting key unit and display module, leading to unnecessary enlargement of the device length.
Innovation Solution
The touch emitting key unit is affixed to the window, allowing it to overlap partially with the display module vertically, reducing dead space by integrating the key unit into the window's structure, which includes a light source, mark pattern, reflection plate, and flexible printed circuit board, and optionally a light guide plate, with a shading layer and protective film to optimize space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the touch emitting key unit is installed side-by-side with the display module, then the touch operation functionality is achieved, but the device length increases due to dead space
Solution Approach 1:
The touch emitting key unit is merged with the window structure, allowing it to be affixed to the window surface. This integration enables the key unit to overlap with the display module in the vertical direction, eliminating the need for side-by-side installation and thereby reducing the overall device length while maintaining touch operation functionality.
Solution Approach 2:
The touch emitting key unit is repositioned from a horizontal side-by-side arrangement to a vertical overlapping arrangement by affixing it to the window. This dimensional change allows the key unit to utilize the vertical space above or below the display module, effectively reducing the horizontal device length.
2Length of stationary object
If the touch emitting key unit is affixed to the window to reduce dead space, then the device length is minimized, but the structural complexity increases
Solution Approach 1:
The window serves multiple functions: it acts as both the display cover and the mounting substrate for the touch emitting key unit. By affixing the key unit to the window, the window becomes a multi-functional component that supports both display protection and touch input functionality, thereby reducing the need for additional structural elements.
Solution Approach 2:
The touch emitting key unit is nested within the window structure by being affixed to its surface. This nesting approach allows the key unit to be integrated into the existing window framework rather than requiring a separate housing structure, thereby minimizing structural complexity while achieving compact dimensions.
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 reduces the dead space and minimizes the unnecessary enlargement of the device length, allowing for a more compact and slimmed-down display device design while maintaining touch operation functionality.
Implementation Method 1
The touch emitting key unit may include a light source; a mark pattern part marked with marks; and a reflection plate reflecting the light from the light source toward the mark pattern part
Implementation Method 2
a reflection plate reflecting the light from the light source toward the mark pattern part
Data Source
AI summary
A display device is disclosed. In one aspect, the device includes a touch emitting key unit, wherein the display device has a structure that a display module and a part of the touch emitting key unit substantially vertically overlap as the touch emitting key unit is affixed to a window. According to the structure, a dead space outside a screen may be effectively reduced.