Utac Headquarters Pte. Ltd.

Thanawat Jaengkrajarng

Hua Hong Tan

Alexander Lucero Laylo

Tanawan Chaowasakoo

Saravuth Sirinorakul

Natawat Kasikornrungroj

Preecha Joymak

Kawin Saiubol

Wasu Aingkaew

A semiconductor device has a semiconductor die with a sensor and a cavity formed into a first surface of the semiconductor die to provide access to the sensor. A protective layer is formed on the first surface of the semiconductor die around the cavity. An encapsulant is deposited around the semiconductor die. The protective layer blocks the encapsulant from entering the cavity. With the cavity clear of encapsulant, liquid or gas has unobstructed entry into cavity during operation of the semiconductor die. The clear entry for the cavity provides reliable sensor detection and measurement. The semiconductor die is disposed over a leadframe. The semiconductor die has a sensor. The protective layer can be a film. The protective layer can have a beveled surface. A surface of the leadframe can be exposed from the encapsulant. A second surface of the semiconductor die can be exposed from the encapsulant.

Semiconductor device and method of forming protective layer around cavity of semiconductor die

An embodiment related to a device. The device includes a first die with first and second die surfaces. The second die surface is bonded to a first die attach pad (DAP) disposed on a first substrate surface of a package substrate and the first die surface includes a first die contact pad. The device also includes a first clip bond including a first clip bond horizontal planar portion attached to the first die contact pad on the first die surface, and a first clip bond vertical portion disposed on an edge of the first clip bond horizontal planar portion. The first clip bond vertical portion is attached to a first substrate bond pad on the first substrate surface. The device further includes a first conductive clip-die bonding layer with spacers on the first die contact pad of the first die. The first conductive clip-die bonding layer bonds the first clip bond horizontal planar portion to the first die contact pad, and the spacers maintain a uniform Bond Line Thickness (BLT) of the first conductive clip-die bonding layer.

Semiconductor packages and methods of packaging semiconductor devices

An embodiment related to a method for forming a device is disclosed. The method includes providing a package substrate having a first die attach pad (DAP) and a first bond pad, forming a first conductive die-substrate bonding layer on the first DAP, and attaching a first major surface of a first die to the first DAP. The first die includes a first die contact pad on a second major surface of the first die. A first conductive clip-die bonding layer with spacers is formed on the first die contact pad of the first die. A first conductive clip-substrate bonding layer is formed on the first bond pad of the package substrate. The method also includes attaching a first clip bond to the first die and the first bond pad. The first clip bond includes a first horizontal planar portion attached to the first die over the first die contact pad and a second vertical portion attached to the first bond pad.

Conductive bonding layer with spacers between a package substrate and chip

Growing community of inventors

Bangkok, Thailand

Thanawat Jaengkrajarng