摘要:
A manufacturing method of a semiconductor device formed in a chip size package is improved to enhance a yield and reliability. A window (20) to expose first wirings (3) is formed only in a region of a semiconductor substrate (1) where the first wirings (3) exist. As a result, area of the semiconductor substrate (1) bonded to a supporting body (4) through an insulation film (2) and a resin (5) is increased to prevent cracks in the supporting body (4) and separation of the semiconductor substrate (1) from the supporting body (4). A slit (30) is formed along a dicing line after forming the window (20), the slit (30) is covered with a protection film (10) and then the semiconductor substrate (1) is diced into individual semiconductor dice. Thus, separation on a cut surface or at an edge of the semiconductor dice, which otherwise would be caused by contact of the blade in the dicing can be prevented.
摘要:
The invention is directed to an improvement of reliability of a chip size package type semiconductor device in a manufacturing method thereof. A support body (14) is formed on a front surface of a semiconductor substrate (10) with a first insulation film (11) therebetween. Then, a part of the semiconductor substrate (10) is selectively etched from its back surface to form an opening (10w), and then a second insulation film (16) is formed on the back surface. Next, the first insulation film (11) and the second insulation film (16) at a bottom of the opening (10w) are selectively etched, to expose pad electrodes (12) at the bottom of the opening (10w). Then, a third resist layer (18) is selectively formed on the second insulation film (16) at boundaries between sidewalls and the bottom of the opening (10w) on the back surface of the semiconductor substrate (10). Furthermore, a wiring layer (19) electrically connected with the pad electrodes (12) at the bottom of the opening (10w) and extending onto the back surface of the semiconductor substrate (10) is selectively formed corresponding to a predetermined pattern.
摘要:
A manufacturing method of a semiconductor device formed in a chip size package is improved to enhance a yield and reliability. A window (20) to expose first wirings (3) is formed only in a region of a semiconductor substrate (1) where the first wirings (3) exist. As a result, area of the semiconductor substrate (1) bonded to a supporting body (4) through an insulation film (2) and a resin (5) is increased to prevent cracks in the supporting body (4) and separation of the semiconductor substrate (1) from the supporting body (4). A slit (30) is formed along a dicing line after forming the window (20), the slit (30) is covered with a protection film (10) and then the semiconductor substrate (1) is diced into individual semiconductor dice. Thus, separation on a cut surface or at an edge of the semiconductor dice, which otherwise would be caused by contact of the blade in the dicing can be prevented.