Electronic Device Brightness Compensation for Defective Light Emitting Elements
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Solution Overview
Problem
Existing display technologies face issues with uneven brightness due to defective light emitting elements in the backlight module, which cannot be effectively compensated by preset manufacturing parameters.
Innovation Solution
An electronic device is designed with a detection element to identify defective light emitting elements, a control module to generate new brightness compensation tables, and a memory element to store these tables, allowing for real-time adjustment of the light emission to maintain even brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If preset compensation parameters are used during manufacturing, then initial brightness uniformity is improved, but the system cannot compensate for light emitting element defects that occur during use
Solution Approach 1:
The system performs preliminary detection of light emitting element defects during the manufacturing process and pre-generates compensation tables stored in memory. This preliminary action ensures that when the display is activated, the compensation parameters are already in place to correct for detected defects, thus maintaining brightness uniformity without requiring real-time adjustment during operation.
Solution Approach 2:
The system incorporates a detection element that continuously monitors the operational status of light emitting elements and provides feedback to the control module. When a defect is detected during use, the control module receives this feedback and dynamically generates updated compensation tables, enabling the system to adapt to changing conditions and maintain display quality throughout the product lifecycle.
2Reliability
If real-time detection and compensation is implemented, then display brightness uniformity is maintained during use, but device complexity increases
Solution Approach 1:
The control module integrates multiple functions including defect detection processing, compensation table generation, and display data adjustment into a single unified component. The detection element is closely coupled with the control module, allowing seamless communication and processing. This merging reduces the number of separate components and simplifies the overall system architecture while maintaining the capability for real-time defect compensation.
Solution Approach 2:
The system performs self-diagnosis and self-correction by automatically detecting light emitting element defects and generating appropriate compensation parameters without requiring external intervention. The control module autonomously processes detection signals and adjusts display output, enabling the display system to maintain quality independently throughout its operational life.
3Measurement precision
If compensation tables are dynamically generated, then compensation accuracy is improved, but processing time increases
Solution Approach 1:
The system generates and stores compensation tables in advance during the manufacturing process or during initial system activation. These pre-generated tables are stored in memory for rapid retrieval, eliminating the need for time-consuming calculations during normal operation. When defects are detected, the system can quickly apply pre-computed compensation parameters or generate updated tables only when necessary.
Solution Approach 2:
The compensation system operates dynamically by generating updated compensation tables only when defects are detected, rather than continuously recalculating. The control module adapts the processing intensity based on system needs - using pre-stored tables during normal operation and generating new tables only when required, thus balancing accuracy with processing time efficiency.
Data Source
AI summary
An electronic device, including a first substrate, light emitting elements, a light emission driving element, a detection element, a control module, and a first memory element, is provided. The light emitting elements are disposed on the first substrate. The light emission driving element is electrically connected to the light emitting elements. The detection element is electrically connected to the light emitting elements and is configured to detect whether the light emitting elements are defective. The control module is electrically connected to the detection element and the light emission driving element. The first memory element is electrically connected to the control module and is configured to store a first brightness compensation table. In response to the detection element detecting that at least one of the light emitting elements is defective, the detection element outputs an adjustment signal to the control module. The control module generates a new first brightness compensation table.