CN-122003207-A - Ultrasonic imaging apparatus

CN122003207ACN 122003207 ACN122003207 ACN 122003207ACN-122003207-A

Abstract

An ultrasonic imaging device comprises a substrate, a plurality of signal lines, a plurality of static protection circuits, wherein at least part of the signal lines in the plurality of signal lines are electrically connected with the static protection circuits, the static protection circuits comprise unidirectional static electricity conducting units and static electricity discharging ends, one ends of the unidirectional static electricity conducting units are electrically connected with the static electricity discharging ends, and the other ends of the unidirectional static electricity conducting units are electrically connected with the signal lines.

Inventors

TONG YUE
WANG LEI
LIU LIWEI
CAO YONGGANG
GOU YUE
LI JIAMIN
WANG YINGZI

Assignees

京东方科技集团股份有限公司

Dates

Publication Date: 20260508
Application Date: 20240902

Claims (20)

An ultrasound imaging apparatus, wherein the ultrasound imaging apparatus comprises: A substrate base plate including a functional region and a peripheral region surrounding the functional region; A plurality of signal lines located at one side of the substrate base plate, at least part of the signal lines including a portion located at the peripheral region; A plurality of electrostatic protection circuits, which are positioned on the same side of the substrate with the plurality of signal lines; the orthographic projection of the plurality of static protection circuits on the substrate is positioned in the peripheral area, at least part of the signal wires in the plurality of signal wires are electrically connected with the static protection circuits, the static protection circuits comprise unidirectional static conduction units and static discharge ends, one ends of the unidirectional static conduction units are electrically connected with the static discharge ends, and the other ends of the unidirectional static conduction units are electrically connected with the signal wires.
The ultrasonic imaging device according to claim 1, wherein the electrostatic protection circuit comprises a plurality of the unidirectional electrostatic conduction units and two electrostatic discharge ends, wherein the two electrostatic discharge ends are a first electrostatic discharge end and a second electrostatic discharge end respectively, the plurality of unidirectional electrostatic conduction units comprise at least one first unidirectional electrostatic conduction unit and at least one second unidirectional electrostatic conduction unit, the at least one first unidirectional electrostatic conduction unit is electrically connected between the first electrostatic discharge end and the signal line, the at least one second unidirectional electrostatic conduction unit is electrically connected between the second electrostatic discharge end and the signal line, the at least one first unidirectional electrostatic conduction unit is configured to conduct when the signal line is accumulated and conduct positive charges through the first electrostatic discharge end, and the at least one second unidirectional electrostatic conduction unit is configured to conduct positive charges through the second electrostatic discharge end when the signal line is accumulated.
The ultrasound imaging apparatus of claim 2, wherein the electrostatic protection circuit comprises a plurality of the unidirectional electrostatic conduction units in series between the first electrostatic discharge end and the second electrostatic discharge end.
The ultrasonic imaging device according to claim 2 or 3, wherein the plurality of unidirectional electrostatic conductive units are arranged in an extending direction parallel to the substrate surface and perpendicular to the signal line, and the at least one first unidirectional electrostatic conductive unit and the at least one second unidirectional electrostatic conductive unit are respectively located on both sides of the signal line in an extending direction parallel to the substrate surface and perpendicular to the signal line.
The ultrasound imaging device of any of claims 2 to 4, wherein the unidirectional electrostatic conduction unit comprises 1 unidirectional electrostatic conduction subunit or a plurality of unidirectional electrostatic conduction subunits in parallel.
The ultrasonic imaging device according to claim 5, wherein a plurality of the unidirectional electrostatic conductive subunits connected in parallel are arranged in order along an extending direction of the signal line.
The ultrasound imaging apparatus of claim 5 or 6, wherein the unidirectional electrostatic conductive sub-unit comprises a first pole and a second pole, the signal line is electrically connected to the first pole of the unidirectional electrostatic conductive sub-unit in the first unidirectional electrostatic conductive unit, and the first electrostatic discharge end is electrically connected to the second pole of the unidirectional electrostatic conductive sub-unit in the first unidirectional electrostatic conductive unit.
The ultrasound imaging device of any of claims 5 to 7, wherein the unidirectional electrostatic conductive sub-unit comprises a first pole and a second pole, the signal line is electrically connected to the second pole of the unidirectional electrostatic conductive sub-unit in the second unidirectional electrostatic conductive unit, and the second electrostatic discharge end is electrically connected to the first pole of the unidirectional electrostatic conductive sub-unit in the second unidirectional electrostatic conductive unit.
The ultrasonic imaging device according to claim 7 or 8, wherein the first poles of the plurality of parallel unidirectional electrostatic conductive sub-units are sequentially arranged along an extending direction of the signal line, and the second poles of the plurality of parallel unidirectional electrostatic conductive sub-units are sequentially arranged along the extending direction of the signal line; At least part of the unidirectional electrostatic conductive units are integrally connected with the first poles of a plurality of parallel unidirectional electrostatic conductive subunits and/or the second poles of a plurality of parallel unidirectional electrostatic conductive subunits.
The ultrasound imaging apparatus of any of claims 7 to 9, wherein the unidirectional electrostatic conductive sub-unit further comprises a third electrode electrically connected to the first electrode or the second electrode.
The ultrasonic imaging device according to claim 10, wherein the third electrodes of the plurality of parallel unidirectional electrostatic conductive subunits are sequentially aligned and integrally connected along an extending direction of the signal line.
The ultrasound imaging device of any of claims 5 to 11, wherein the unidirectional electrostatic conductive subunit is a switching transistor; The switch transistor further comprises a first active layer, a first electrode, a second electrode, a first electrode and a second electrode, wherein the first electrode and the second electrode are positioned on one side, away from the substrate, of the first active layer; When the unidirectional electrostatic conduction subunit further comprises a third pole, the third pole is located between the first pole and the second pole and the first active layer.
The ultrasound imaging device of claim 12, wherein the first doped region, the channel region, the second doped region in the first active layer are sequentially aligned in a direction in which the second unidirectional electrostatic conductive element points toward the first unidirectional electrostatic conductive element, the first pole and the second pole being aligned in a direction in which the second unidirectional electrostatic conductive element points toward the first unidirectional electrostatic conductive element.
The ultrasound imaging apparatus of claim 12 or 13, wherein the first pole and the second pole are co-layer disposed on a side of the first active layer facing away from the substrate; And between the signal wire and the first electrostatic discharge end and/or the signal wire and the second electrostatic discharge end, two unidirectional electrostatic conduction units are arbitrarily connected in series, wherein the second doped region of one unidirectional electrostatic conduction unit is adjacent to the first doped region of the other unidirectional electrostatic conduction unit, and the second pole of one unidirectional electrostatic conduction unit is integrally connected with the first pole of the other unidirectional electrostatic conduction unit.
The ultrasonic imaging device according to any one of claims 7 to 12, wherein the first pole, the second pole, and the signal line are arranged in the same layer; The signal line is integrally connected to the first pole and the second pole electrically connected thereto.
The ultrasonic imaging device according to any one of claims 12 to 15, wherein the switching transistor is a PIN diode, or The switching transistor is a thin film transistor, one of the first pole and the second pole is a first drain electrode, the other of the first pole and the second pole is a first source electrode, and the thin film transistor further comprises a third pole electrically connected with the first source electrode.
The ultrasound imaging apparatus of claim 16, wherein the electrostatic protection circuit includes all of the thin film transistors being N-type thin film transistors, the first pole being the first source and the second pole being the first drain, or All the thin film transistors included in the electrostatic protection circuit are P-type thin film transistors, the first electrode is the first drain electrode, and the second electrode is the first source electrode.
The ultrasonic imaging device according to any one of claims 2 to 17, wherein the ultrasonic imaging device further comprises a first electrostatic discharge signal line electrically connected to the first electrostatic discharge terminal, and a second electrostatic discharge signal line electrically connected to the second electrostatic discharge terminal; At least part of the first electrostatic discharge ends of the electrostatic protection circuits are electrically connected with the same first electrostatic discharge signal line, and at least part of the second electrostatic discharge ends of the electrostatic protection circuits are electrically connected with the same second electrostatic discharge signal line.
The ultrasonic imaging device according to claim 18, wherein an extending direction of the first electrostatic discharge signal line and the second electrostatic discharge signal line intersects an extending direction of the signal line; The first electrostatic discharge signal line and the second electrostatic discharge signal line are positioned at different layers; The unidirectional electrostatic conduction unit is positioned between the orthographic projection of the first electrostatic discharge signal line on the substrate and the orthographic projection of the second electrostatic discharge signal line on the substrate.
The ultrasonic imaging apparatus according to any one of claims 1 to 19, wherein the peripheral region includes a binding region located at one side of the functional region in a first direction; in a region between the bonding region and the functional region, the plurality of signal lines are arranged in a second direction intersecting the first direction; The peripheral zone further comprises a first sub-zone positioned at one side of the binding zone towards the functional zone in the first direction and a second sub-zone positioned at one side of the first sub-zone towards the functional zone in the first direction; The orthographic projection of the first part on the substrate base plate falls into the first subarea and the binding area, and one end of the first part far away from the functional area is electrically connected with the third binding electrode; The second part, the orthographic projection of the second part on the substrate falls into the second subarea, and at least part of the second part of the signal lines extends along a third direction, wherein the third direction is crossed with the first direction and the second direction; a third portion located on a side of the functional region away from the bonding region and extending in the first direction; At least one of the first portion, the second portion, and the third portion is electrically connected to the electrostatic protection circuit.

Description

Ultrasonic imaging apparatus Technical Field The present disclosure relates to the field of ultrasound imaging technologies, and in particular, to an ultrasound imaging apparatus. Background Ultrasound imaging is an important non-destructive testing modality in medical treatment. With the technological updates, ultrasound imaging is evolving towards faster dynamics, sharper and three dimensions. High definition and resolution are always the targets that are sought and pursued, which facilitates earlier disease discovery for timely treatment. The ultrasonic imaging equipment with the large-area two-dimensional detection array can greatly increase the detection information quantity, and the detection depth and the detection resolution can be improved through two-dimensional imaging. However, if static electricity is accumulated in the preparation process of the ultrasonic imaging equipment with the large-area two-dimensional detection array, the device is damaged, the preparation yield of the ultrasonic imaging equipment is affected, and the manufacturing cost of the ultrasonic imaging equipment is increased. Disclosure of Invention An ultrasonic imaging apparatus provided in an embodiment of the present disclosure includes: a substrate base plate including a functional region and a peripheral region surrounding the functional region; a plurality of signal lines located at one side of the substrate base plate, at least part of the signal lines including a portion located at the peripheral region; The electrostatic protection circuit comprises a unidirectional electrostatic conduction unit and an electrostatic discharge end, wherein one end of the unidirectional electrostatic conduction unit is electrically connected with the electrostatic discharge end, and the other end of the unidirectional electrostatic conduction unit is electrically connected with the signal wire. In some embodiments, the electrostatic protection circuit comprises a plurality of unidirectional electrostatic conduction units and two electrostatic discharge ends, wherein the two electrostatic discharge ends are a first electrostatic discharge end and a second electrostatic discharge end respectively, the plurality of unidirectional electrostatic conduction units comprise at least one first unidirectional electrostatic conduction unit and at least one second unidirectional electrostatic conduction unit, the at least one first unidirectional electrostatic conduction unit is electrically connected between the first electrostatic discharge end and the signal wire, the at least one second unidirectional electrostatic conduction unit is electrically connected between the second electrostatic discharge end and the signal wire, the at least one first unidirectional electrostatic conduction unit is configured to conduct when positive charges are accumulated on the signal wire and conduct positive charges through the first electrostatic discharge end, and the at least one second unidirectional electrostatic conduction unit is configured to conduct negative charges through the second electrostatic discharge end when negative charges are accumulated on the signal wire. In some embodiments, the electrostatic protection circuit includes a plurality of unidirectional electrostatic conductive elements connected in series between the first electrostatic discharge end and the second electrostatic discharge end. In some embodiments, the plurality of unidirectional electrostatic conductive units are arranged along an extending direction parallel to the surface of the substrate and perpendicular to the signal line, and the at least one first unidirectional electrostatic conductive unit and the at least one second unidirectional electrostatic conductive unit are respectively located at two sides of the signal line in the extending direction parallel to the surface of the substrate and perpendicular to the signal line. In some embodiments, the unidirectional electrostatic conductive element comprises 1 unidirectional electrostatic conductive subunit or a plurality of unidirectional electrostatic conductive subunits in parallel. In some embodiments, a plurality of parallel unidirectional electrostatic conductive subcells are arranged in sequence along the extension direction of the signal line. In some embodiments, the unidirectional electrostatic conductive subcells include a first pole and a second pole, the signal line is electrically connected to the first pole of the unidirectional electrostatic conductive subcell in the first unidirectional electrostatic conductive cell, and the first electrostatic discharge end is electrically connected to the second pole of the unidirectional electrostatic conductive subcell in the first unidirectional electrostatic conductive cell. In some embodiments, the unidirectional static conductive subcell includes a first pole and a second pole, the signal line is electrically connected to the second pole of the unidirectional st