Pixel Data Sensing for Abnormal Column Shielding in Displays
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Solution Overview
Problem
Existing display devices face issues with abnormal pixel internal data affecting entire columns, leading to undesirable phenomena like 'undesirable longitudinal line' or 'undesirable point and strip line', due to faults in sensing signal lines.
Innovation Solution
A method and apparatus for sensing pixel internal data in display devices, which involves sensing data from multiple lines of pixel units, determining column sequence numbers of suspected abnormal pixel units, identifying abnormal sensing signal lines, and replacing pixel internal data from affected columns with data from adjacent columns during full-screen sensing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensing signal lines are used to read pixel internal data, then additional application functions (temperature, pressure, light intensity sensing) are achieved, but abnormal pixel internal data can affect entire columns causing undesirable longitudinal lines or point and strip lines
Solution Approach 1:
The patent divides the sensing signal lines into multiple independent channels, each serving specific pixel units. By segmenting the sensing system, abnormal data in one channel does not propagate to other channels, isolating the harmful effects to only the affected column while preserving other sensing functions.
Solution Approach 2:
The patent introduces an intermediary processing mechanism that detects and handles abnormal pixel data before it can affect the entire column. This intermediary layer filters out abnormal values and prevents them from propagating through the sensing signal lines to cause longitudinal lines or point and strip lines.
2Measurement precision
If pixel internal data is sensed for every line, then complete sensing coverage is achieved, but detection time and processing complexity increase
Solution Approach 1:
The patent implements partial sensing by selecting specific lines for sensing operations rather than sensing every line. This partial action approach maintains adequate sensing coverage for detecting abnormal pixel data while significantly reducing the time and processing complexity compared to full-line sensing.
Solution Approach 2:
The patent employs periodic sensing operations where sensing is performed at intervals rather than continuously on every line. This periodic action reduces the overall detection time and processing load while still achieving complete sensing coverage over time, as all lines are periodically included in the sensing cycle.
Data Source
AI summary
Provided is a method for sensing pixel internal data in a display device. The method includes: sensing pixel internal data for each line of pixel units to determine column sequence numbers of suspected abnormal pixel units in the line of pixel units; determining, based on a number of the suspected abnormal pixel units of each column sequence number in the at least three lines of pixel units, whether a sensing signal line corresponding to the column sequence number is an abnormal sensing signal line; and in a case that there is at least one abnormal sensing signal line, replacing pixel internal data of a column of pixel units corresponding to each abnormal sensing signal line with pixel internal data of at least one column of pixel units adjacent to the abnormal sensing signal line each time the pixel internal data of all pixel units is sensed.