US 12,142,199 B2
Recognition apparatuses, recognition methods, and electronic devices capable of not reducing screen-to-body
Jianfeng Zhu, Guangdong (CN)
Assigned to HUIZHOU TCL MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed by HUIZHOU TCL MOBILE COMMUNICATION CO., LTD., Guangdong (CN)
Filed on Jul. 6, 2023, as Appl. No. 18/347,601.
Application 18/347,601 is a continuation of application No. PCT/CN2021/075584, filed on Feb. 5, 2021.
Claims priority of application No. 202110019111.7 (CN), filed on Jan. 7, 2021.
Prior Publication US 2023/0351950 A1, Nov. 2, 2023
Int. Cl. G09G 3/32 (2016.01); G06F 3/041 (2006.01)
CPC G09G 3/32 (2013.01) [G06F 3/0412 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A recognition apparatus, comprising:
a recognition layer comprising a sensing layer and a drive circuit connected to the sensing layer; and
an electroluminescent panel disposed on the recognition layer,
wherein the recognition layer is configured to recognize an object that contacts the electroluminescent panel based on light that is emitted by the electroluminescent panel in response to contact with the object and reflected by the object to the recognition layer;
the sensing layer comprises a photoelectric conversion material;
the object comprises a fingerprint; and
the electroluminescent panel comprises:
a conductive base plate disposed on the recognition layer, the conductive base plate having an electrode layer;
an electroluminescent layer disposed on the conductive base plate and connected to the electrode layer; and
a cover plate disposed on the electroluminescent layer;
wherein the drive circuit comprises:
a transistor module connected to the sensing layer, wherein the transistor module comprises:
a transistor comprising a gate, an input terminal connected to the sensing layer, and an output terminal;
a first resistor, connected to the output terminal of the transistor;
a first capacitor, connected to the gate of the transistor; and
a second capacitor, connected to the first resistor in parallel;
a pulse input terminal connected to the gate of the transistor; and
a signal output terminal connected to the output terminal of the transistor, wherein the pulse input terminal is configured to input an electrical pulse signal to turn on the transistor to form a path, and light energy is converted into electric energy; and
wherein the electroluminescent layer has a thickness of 10 nm˜1 μm.