Display Frame with Support Portions for Pressure Sensing
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Solution Overview
Problem
Display devices with pressure sensing capabilities face significant sensitivity deviations due to uneven pressure distribution across the pressure sensing portion, leading to inconsistent touch detection and image correction.
Innovation Solution
The design incorporates a frame with strategically placed support portions and grooves that allow for equal pressure distribution between the central and edge areas of the pressure sensing portion, minimizing sensitivity deviations by enabling the pressure sensing elements to bend and restore, ensuring consistent pressure application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure sensing portion is directly mounted between the bracket and display panel, then the structure is simple, but sensitivity deviation occurs due to uneven pressure distribution
Solution Approach 1:
The frame is segmented into multiple functional portions: a base portion, a first support portion protruding toward the window, and a second support portion protruding toward the bracket. This segmentation allows each portion to independently manage pressure distribution in different regions, ensuring uniform pressure across the pressure sensing portion while maintaining structural clarity.
Solution Approach 2:
The frame acts as an intermediary structure between the bracket and display panel, introducing support portions that mediate the pressure transmission. These support portions distribute the mechanical load evenly, preventing direct concentration of force on the pressure sensing portion and thereby eliminating sensitivity deviation.
2Manufacturing precision
If support portions are added to the frame, then pressure distribution is improved, but manufacturing complexity increases
Solution Approach 1:
The support portions are designed with specific geometric parameters: the first support portion protrudes by a predetermined distance toward the window, and the second support portion protrudes by a predetermined distance toward the bracket. These parameterized dimensions enable standardized manufacturing processes while ensuring precise pressure distribution control across the pressure sensing portion.
3Ease of manufacture
If the frame structure is simplified, then manufacturing is easier, but pressure sensing accuracy decreases
Solution Approach 1:
Different portions of the frame are assigned different structural qualities: the base portion provides stable mounting, the first support portion targets the window interface, and the second support portion targets the bracket interface. This localized optimization ensures each region contributes appropriately to overall pressure distribution, maintaining manufacturing simplicity while achieving high measurement precision.
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 significantly reduces sensitivity deviations, enhancing the accuracy of touch detection and image correction by ensuring equal pressure magnitude across the pressure sensing portion, thereby improving overall display device performance.
Implementation Method 1
a pressure sensing portion disposed between the bracket and the display panel
Implementation Method 2
enabling the pressure sensing elements to bend and restore, ensuring consistent pressure application
Data Source
AI summary
A display device including a bottom cover, a window disposed on the bottom cover, a frame disposed between the bottom cover and the window, a display panel disposed between the frame and the window, a bracket disposed between the display panel and the frame, and a pressure sensing portion disposed between the bracket and the display panel, in which the frame includes a base portion disposed between the bottom cover and the bracket, a first support portion protruding from an edge of the base portion toward an edge of the window, and a second support portion protruding from the first support portion, disposed between an edge of the bracket and the base portion, and spaced apart from the base portion.