Light Emitting Touchpad Spacing Blocks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional light emitting touchpads suffer from unsatisfactory light-emission efficiency due to the use of glue in full range areas, which affects the luminance of light patterns and can lead to misjudgment in touch control systems.
Innovation Solution
A light emitting touchpad device with a light guiding plate featuring spacing blocks in nil-light spot areas, reducing light energy loss and enhancing overall emission efficiency, while maintaining surface evenness and preventing misjudgment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If glue is applied in full range of the area without light emission, then the surface of the touchpad maintains evenness and is unlikely deformed, but the efficiency of total light emission is degraded
Solution Approach 1:
The patent divides the non-light-emitting area into discrete spacing blocks rather than using continuous glue coverage. These spacing blocks are positioned at specific locations to maintain surface stability while leaving gaps that allow light to pass through, thus resolving the contradiction between surface evenness and light emission efficiency.
Solution Approach 2:
The patent applies different properties to different areas: glue is applied only at specific spacing block locations rather than uniformly across the entire non-light-emitting area. This localized approach maintains surface stability where needed while preserving light transmission in the gaps between spacing blocks.
2Stability of the object's composition
If glue is applied in full range of the area, then the surface maintains evenness, but the luminance of light emitting pattern is attenuated
Solution Approach 1:
By segmenting the glue application into discrete spacing blocks rather than continuous coverage, the patent allows light to pass through the gaps between blocks, thereby maintaining luminance while still providing surface stability through the spaced adhesive points.
Solution Approach 2:
The spacing blocks act as intermediary elements that mediate between the need for surface stability (provided by glue) and the need for light transmission. The blocks are positioned and sized to provide minimal interference with light paths while maintaining structural integrity.
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 effectively enhances light emission efficiency and prevents touch control system misjudgment by strategically placing spacing blocks on the light guiding plate, reducing the area of glue application and optimizing light distribution.
Implementation Method 1
an effect similar to optical dots would be produced (that is, the conditions for total inner reflection of light propagating within the film are changed)
Data Source
AI summary
The present disclosure discloses a light emitting touch pad device including a circuit board, a plurality of sensing elements, a light guiding plate, a light emitting component, and a plurality of first spacing blocks. The sensing elements are disposed on the circuit board, and a distance between geometric centers of two adjacent sensing elements is a first length. The light guiding plate is disposed above the circuit board, and includes at least one light spot area and at least one nil-light spot area. The light emitting component emits light toward the light guiding plate. The first spacing blocks are disposed on the light guiding plate, and are located in the nil-light spot area. A distance between geometric centers of two adjacent first spacing blocks is a second length, and a spacing distance between two adjacent first spacing blocks is a third length.