Thickness Detector Wear Compensation via Slot Segmentation

Solution Overview

Problem

Existing thickness detector devices for backlight sources suffer from reduced accuracy due to wear-induced slot width increases, leading to friction and decreased detection precision over multiple uses.

Innovation Solution

A thickness detector device with a base, slot component, and driver component, where the slot component has multiple slots of varying widths, and the driver component moves to switch slots upon wear, maintaining accurate detection by replacing worn slots without frequent replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single slot is used in the thickness detector device, then the device structure is simple, but the detection accuracy decreases over time due to wear-induced slot width increases

Engineering Contradiction:

Improvedevice structureVSAvoiddetection accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent divides the detection system into multiple slots (first slot, second slot, etc.) instead of using a single slot. Each slot can be independently used for thickness detection, allowing the system to segment the detection function across multiple channels. This resolves the contradiction by maintaining simple individual slot structures while achieving sustained accuracy through multiple slots.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a wear compensation mechanism where worn slots are discarded and replaced by switching to unused slots. The system monitors slot wear and automatically switches to a different slot when wear exceeds a threshold, effectively recovering detection accuracy without replacing the entire device. This resolves the contradiction by allowing simple slot structures while maintaining precision through periodic slot replacement.

Inventive Principle:

Principle #34Discarding and recovering

2Measurement precision

If multiple slots are provided in the slot component, then detection accuracy is maintained over multiple uses, but the device complexity increases

Engineering Contradiction:

Improvedetection accuracyVSAvoidslot component structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the detection system into multiple slots (first slot, second slot, etc.) instead of using a single slot. Each slot can be independently used for thickness detection, allowing the system to segment the detection function across multiple channels. This resolves the contradiction by maintaining simple individual slot structures while achieving sustained accuracy through multiple slots.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the parameter of slot quantity from 1 to multiple (n≥2). By providing n slots in the slot component where each slot has a width corresponding to different thickness specifications, the system maintains detection accuracy by switching between slots based on wear levels and detection requirements. This parameter change resolves the contradiction between maintaining precision and managing complexity.

Inventive Principle:

Principle #35Parameter changes

3Duration of action of moving object

If the slot width is increased to accommodate wear, then the device can continue operating, but the detection precision decreases

Engineering Contradiction:

Improveoperational durationVSAvoiddetection precision

Core Design Contradiction:

Duration of action of moving objectVSMeasurement precision

Solution Approach 1:

The patent implements a wear compensation mechanism where worn slots are discarded and replaced by switching to unused slots. The system monitors slot wear and automatically switches to a different slot when wear exceeds a threshold, effectively recovering detection accuracy without replacing the entire device. This resolves the contradiction by allowing simple slot structures while maintaining precision through periodic slot replacement.

Inventive Principle:

Principle #34Discarding and recovering

Solution Approach 2:

The patent prepares multiple slots in advance, each with specific width characteristics suitable for different detection requirements. Before wear becomes problematic, the system has already positioned alternative slots ready for use. This preliminary preparation allows the system to maintain operational duration while preserving detection precision by switching to unworn slots before precision degrades.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11346646B2Thickness detector device and method, detector system and slot device

Publication Date: 2022.05.31 CHONGQING BOE DISPLAY LIGHTING CO LTD

AI summary

A thickness detector device and method, a detector system and a slot device are provided, and the thickness detector device includes: a base, which has a side wall provided with a through slot that penetrates through the base; a slot component at the base and has n slots, n being an integer greater than 1, and a width of each slot being less than a width of the through slot; a driver component which is provided on the base, is in a fixed connection with the slot component, and is configured to change the slot that is in the slot component and is in communication with the through slot by driving the slot component to move.