公开(公告)号：US11810643B2

公开(公告)日：2023-11-07

申请号：US17568727

申请日：2022-01-05

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chia-Wei Ho ,  Min-Chia Wang ,  Hsiu-Ming Yeh ,  Chung-Ming Lin

IPC: G11C7/00 ,  G11C8/08

CPC classification number: G11C8/08

Abstract: A word line driving circuit includes a first circuit and a second circuit. The first circuit is configured to provide a first word line driving voltage and a second word line driving voltage based on a first control signal, a second control signal, a first bias voltage, a second bias voltage and a base voltage. The second circuit is configured to provide the first control signal and the second control signal based on a third control signal, a fourth control signal, a word line control signal, a reverse word line control signal, the first bias voltage, the second bias voltage and the base voltage. The first bias voltage and the second bias voltage have different levels during the read mode and the program mode for adaptively adjusting the read voltage and the program voltage, thereby improving the data access time.

公开(公告)号：US20240154512A1

公开(公告)日：2024-05-09

申请号：US18081706

申请日：2022-12-15

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Hsiu-Ming Yeh ,  Min-Chia Wang

IPC: H02M1/00 ,  H02M3/155

CPC classification number: H02M1/0003 ,  H02M3/155

Abstract: A current generator includes a startup circuit and a bandgap reference circuit coupled to the startup circuit. The startup circuit is for generating a first voltage. The bandgap reference circuit is for generating a second voltage. The bandgap reference circuit includes an operational amplifier. The operational amplifier includes a bias source circuit and a bias generator circuit. The bias source circuit is for generating a reference current according to the first voltage and the second voltage. The bias generator circuit is for generating bias voltages according to the reference current. The startup circuit and the bandgap reference circuit receive a supply voltage.

公开(公告)号：US12176800B2

公开(公告)日：2024-12-24

申请号：US18081706

申请日：2022-12-15

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Hsiu-Ming Yeh ,  Min-Chia Wang

IPC: H02M1/00 ,  H02M3/155

Abstract: A current generator includes a startup circuit and a bandgap reference circuit coupled to the startup circuit. The startup circuit is for generating a first voltage. The bandgap reference circuit is for generating a second voltage. The bandgap reference circuit includes an operational amplifier. The operational amplifier includes a bias source circuit and a bias generator circuit. The bias source circuit is for generating a reference current according to the first voltage and the second voltage. The bias generator circuit is for generating bias voltages according to the reference current. The startup circuit and the bandgap reference circuit receive a supply voltage.

公开(公告)号：US20230178128A1

公开(公告)日：2023-06-08

申请号：US17568727

申请日：2022-01-05

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Chia-Wei Ho ,  Min-Chia Wang ,  Hsiu-Ming Yeh ,  Chung-Ming Lin

IPC: G11C8/08

CPC classification number: G11C8/08

Abstract: A word line driving circuit includes a first circuit and a second circuit. The first circuit is configured to provide a first word line driving voltage and a second word line driving voltage based on a first control signal, a second control signal, a first bias voltage, a second bias voltage and a base voltage. The second circuit is configured to provide the first control signal and the second control signal based on a third control signal, a fourth control signal, a word line control signal, a reverse word line control signal, the first bias voltage, the second bias voltage and the base voltage. The first bias voltage and the second bias voltage have different levels during the read mode and the program mode for adaptively adjusting the read voltage and the program voltage, thereby improving the data access time.