17781900. SENSING CIRCUIT, DETECTION CONTROL METHOD, FINGERPRINT IDENTIFICATION MODULE AND DISPLAY APPARATUS simplified abstract (BOE TECHNOLOGY GROUP CO., LTD.)

SENSING CIRCUIT, DETECTION CONTROL METHOD, FINGERPRINT IDENTIFICATION MODULE AND DISPLAY APPARATUS

Organization Name

BOE TECHNOLOGY GROUP CO., LTD.

Inventor(s)

Chao Chen of Beijing (CN)

Shuai Xu of Beijing (CN)

Wenchen Zhang of Beijing (CN)

Bin Zhao of Beijing (CN)

Xiaoqian Du of Beijing (CN)

Luyao Fan of Beijing (CN)

Binbin Xu of Beijing (CN)

Zhenqian Zhao of Beijing (CN)

Junyu Wu of Beijing (CN)

Jingshu Zhang of Beijing (CN)

SENSING CIRCUIT, DETECTION CONTROL METHOD, FINGERPRINT IDENTIFICATION MODULE AND DISPLAY APPARATUS - A simplified explanation of the abstract

This abstract first appeared for US patent application 17781900 titled 'SENSING CIRCUIT, DETECTION CONTROL METHOD, FINGERPRINT IDENTIFICATION MODULE AND DISPLAY APPARATUS

Simplified Explanation

The sensing circuit in this patent application includes various components such as a photoelectric conversion element, an energy storage circuit, a switch control circuit, a discharge control circuit, and a voltage conversion circuit.

• The photoelectric conversion element adjusts the potential of the first terminal of the energy storage circuit based on the received optical signal.
• The switch control circuit manages the connection of the first terminal of the energy storage circuit to the conversion control node.
• The discharge control circuit controls the connection of the conversion control node to the first voltage terminal.
• The voltage conversion circuit regulates the output voltage signal from the output terminal using second and/or third voltage signals.

• • Potential Applications:**

- Biometric security systems - Access control systems - Authentication devices

• • Problems Solved:**

- Improved fingerprint identification accuracy - Prevention of interference in fingerprint identification processes

• • Benefits:**

- Simplified and efficient fingerprint identification - Enhanced security measures - Reliable authentication processes

• • Potential Commercial Applications:**

- Smartphones and tablets - Laptops and computers - Security systems and access control devices

• • Possible Prior Art:**

One possible prior art for this technology could be existing fingerprint sensors that rely on different methods for fingerprint identification, such as capacitive sensors or optical sensors.

• • Unanswered Questions:**

• • 1. How does the duration length of the fourth voltage signal relate to fingerprint identification accuracy in this technology?**

- The abstract mentions that fingerprint image information can be obtained by detecting the duration length of the fourth voltage signal, but it does not explain the specific correlation between this duration and the accuracy of fingerprint identification.

• • 2. What specific types of optical signals are received by the photoelectric conversion element for controlling the potential of the energy storage circuit?**

- The abstract mentions that the photoelectric conversion element adjusts the potential based on received optical signals, but it does not specify the nature or characteristics of these signals.

Original Abstract Submitted

Sensing circuit, detection control method, fingerprint identification module and display apparatus are provided. The sensing circuit comprises a photoelectric conversion element, an energy storage circuit, a switch control circuit, a discharge control circuit and a voltage conversion circuit. The photoelectric conversion element controls potential of first terminal of energy storage circuit according to received optical signal; the switch control circuit controls first terminal of energy storage circuit to be connected to or disconnected from conversion control node; the discharge control circuit controls conversion control node be connected to or disconnected from first voltage terminal; the voltage conversion circuit controls to output voltage signal outputted by output terminal according to second and/or third voltage signals. In the disclosure, by performing fingerprint identification by detecting duration length of the fourth voltage signal from output terminal, fingerprint image information can be obtained simply and efficiently, thereby improving fingerprint identification accuracy and preventing interference.