Flattening Element for Display Panel Light-On Detection
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Solution Overview
Problem
Large and non-flat display panels pose a challenge during light-on detection, causing uneven forces on probes, leading to reduced service life and detection effectiveness due to the fragile nature of the probes.
Innovation Solution
A light-on detection device with a flattening element that applies force to the display panel to change its surface shape from a first height difference to a second, more uniform shape, allowing probes to perform detection without damage, featuring a substrate, probe block, and supporting elements to ensure even contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display panel is made large-sized, then the display area is increased, but the flatness deteriorates causing uneven forces on probes
Solution Approach 1:
The flattening element performs preliminary flattening action on the display panel before the probe block makes contact. This preliminary action corrects the non-flat shape in advance, ensuring that when probes contact the panel, the forces are evenly distributed. The flattening element is positioned to contact the panel first during the approaching motion, creating the necessary flat surface before detection begins.
2Measurement precision
If the probe is made with small thickness and width for precise structure, then the detection precision is improved, but the probe becomes fragile and service life is reduced
Solution Approach 1:
The flattening element serves as a cushioning element that prevents over-pressurization of the fragile probes. By flattening the panel surface beforehand and providing a stable contact surface, it cushions the probes from excessive forces that would occur on non-flat surfaces, thereby protecting the precise but fragile probe structure and extending service life.
3Measurement precision
If the probe block is made with precise structure for accurate detection, then the detection accuracy is improved, but the probe is easily damaged by uneven forces
Solution Approach 1:
The flattening element acts as an intermediary between the probe block and the display panel. It mediates the interaction by first contacting the panel, flattening the surface, and then allowing the probe block to contact the now-flat surface. This intermediary action eliminates the harmful uneven forces that would directly affect the precise probe 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 flattening element prolongs the service life of probes and ensures effective light-on detection by flattening the display panel before probe contact, preventing over-pressurization and ensuring uniform detection signals.
Implementation Method 1
a flattening element configured to apply a force onto a surface of the display panel so as to change the surface of the display panel from a first shape having a first height difference to a second shape having a second height difference less than the first height difference
Data Source
AI summary
The present disclosure provides a light-on detection device and a light-on detection method. The light-on detection device includes a substrate, and a probe block provided with probes and connected to the substrate. The light-on detection device further includes a flattening element configured to apply a force onto a surface of the display panel so as to change the surface of the display panel from a first shape having a first height difference to a second shape having a second height difference less than the first height difference, thereby to enable the probes to perform the light-on detection on the display panel with the second shape.