Array Substrate Integrating Palm Print Recognition with Display Units
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Solution Overview
Problem
Current Liquid Crystal Displays (LCDs) lack a built-in palm print recognition function, resulting in complex structures when separate recognition circuits are added.
Innovation Solution
An array substrate with integrated palm print recognition units, connected to a second scan line, control voltage terminal, and read signal line, allowing for palm print signal collection and output, while maintaining a simple structure by using transistors and touch control electrodes for identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate palm print recognition circuits are added to LCDs, then palm print recognition function is achieved, but device structure becomes complicated
Solution Approach 1:
The patent merges the palm print recognition function with the existing LCD display structure by integrating recognition units into the array substrate. The recognition units share the same pixel structure and driving circuits as the display units, combining two functions (display and recognition) into a single integrated system rather than adding separate circuits.
Solution Approach 2:
The array substrate is designed to serve multiple functions: it acts as both the display structure and the palm print recognition structure. The same substrate, transistors, and signal lines are used for both displaying images and collecting palm print signals, making the system universal and eliminating the need for dedicated separate circuits.
2Device complexity
If palm print recognition units are integrated into the array substrate, then structure is simplified, but signal collection capability must be maintained
Solution Approach 1:
The array substrate is divided into distinct functional regions: display units for image display and recognition units for palm print recognition. Each repetition unit contains both types of units, allowing independent operation and signal collection while maintaining overall structural simplicity. The segmentation enables dedicated signal collection paths for palm print recognition.
Solution Approach 2:
The patent introduces touch control electrodes and corresponding read signal lines as intermediaries between the palm print recognition units and the external reading device. These intermediaries facilitate the collection and transmission of palm print signals while maintaining the simplified integrated structure, ensuring reliable signal transmission without adding complex external circuits.
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
Enables both touch control and palm print recognition functions in a display apparatus with a simpler structure compared to conventional solutions, allowing for effective palm print recognition without the need for separate circuits.
Implementation Method 1
the second transistor being a phototransistor... configured to collect a palm print signal
Data Source
AI summary
The embodiments of the present disclosure provide an array substrate, a method for driving the array substrate, a display panel and a display apparatus. The array substrate comprises: a plurality of repetition units each comprising a plurality of sub-pixels, one of the plurality of sub-pixels having a palm print recognition unit, each sub-pixel having a display unit connected to a first scan line and a data line and configured to be turned on or off under control of the first scan line, a data signal being inputted to the display unit from the data line while the display unit is on; and a touch control electrode connected to a touch control electrode line and configured to identify a touch control position. The palm print recognition unit is connected to a second scan line, a control voltage terminal and a read signal line, and configured to collect a palm print signal based on the touch control position identified by the touch control electrode under control of the control voltage terminal, and to output the collected palm print signal to the reach signal line under control of the second scan line.