Optical Sensor Alignment in Display Panels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual alignment of components in display panel manufacturing is time-consuming and reduces manufacturing effectiveness, leading to reduced performance due to potential misalignment of color filters and pixel matrices between substrates.
Innovation Solution
Incorporation of optical sensors and a parallel-to-serial converter on a display panel to measure the shift amount between optical sensors and shading modules, allowing for automatic adjustment of brightness based on alignment, utilizing switches with different system voltages to generate sensing signals and a serial signal for determining shift amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual alignment of components is used in display panel manufacturing, then alignment can be performed with simple equipment, but the process is time-consuming and reduces manufacturing effectiveness
Solution Approach 1:
The patent replaces manual mechanical alignment with an optical sensing system that uses optical sensors to detect the positions of components and automatically determines alignment status, eliminating the need for time-consuming manual alignment operations
Solution Approach 2:
The optical sensing system enables the display panel to self-diagnose alignment status by automatically detecting component positions and generating alignment information without requiring external manual intervention
2Device complexity
If manual alignment is used, then equipment complexity is low, but alignment precision and performance are reduced due to potential misalignment
Solution Approach 1:
The patent replaces imprecise manual alignment with an optical detection system that uses optical sensors to accurately detect component positions and determine alignment status, significantly improving alignment precision
Solution Approach 2:
The optical sensing system provides feedback by detecting the actual positions of components and generating alignment information that indicates whether components are properly aligned, enabling precise alignment verification
3Manufacturing precision
If optical sensors are added to measure alignment, then alignment precision is improved, but device complexity increases due to additional components
Solution Approach 1:
The optical sensors serve multiple functions: they detect component positions, determine alignment status, and generate alignment information, allowing a single component to perform multiple tasks and reducing the need for additional specialized components
Solution Approach 2:
The patent combines the optical sensing function with the existing display panel structure by disposing optical sensors on one of the substrates, integrating the measurement function into the panel itself rather than adding separate external measurement equipment
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
Establishes an optical sensing mechanism to accurately measure component alignment, enabling automatic brightness adjustment and improving the stability and performance of the display panel by determining shift amounts and adjusting the aperture ratio.
Implementation Method 1
The optical sensors are configured to output multiple first sensing signals according to a shift amount between the optical sensors and the shading module
Data Source
AI summary
A display panel includes a first substrate, a shading module, a second substrate, optical sensors, and a parallel-to-serial converter. The shading module is disposed on the first substrate. The second substrate is disposed corresponding to the first substrate. The optical sensors are disposed on the second substrate, and are disposed corresponding to the shading module. The optical sensors are configured to output sensing signals according to an offset amount between the optical sensors and the shading module. One of the optical sensors includes a first switch and a second switch, in which the first switch and the second switch are coupled in cascade. The parallel-to-serial converter is configured to generate the serial signal according to the sensing signals.