Component comprising a chip in a cavity and a stress-reduced attachment
View Patent ↗A mechanically improved component comprising a chip in a cavity and a stress-reduced attachment is specified. A component comprises an opening in a housing, an opaque cover or a mechanically flexible line connector, which is attached to two locations.
1. A component, comprising:
a chip having an electrical terminal;
a housing having a cavity, in which the chip is arranged, and an electrical line; and
a mechanically flexible line connector, which interconnects the electrical terminal of the chip with the electrical line, having a lower stiffness than the chip and being mechanically deformable, wherein the line connector has a first bearing element, at which the electrical terminal of the chip is connected to the line connector,
wherein
the line connector comprises at least a first connecting web and at least a second connecting web,
the first bearing element is coupled to the at least one first connecting web and the at least one second connecting web,
the at least one first connecting web and the at least one second connecting web connect the first bearing element with the electrical line,
the at least one first connecting web and the at least one second connecting web are arranged spaced apart from each other between the first bearing element and the electrical line, and
the inner side of the cavity and the surfaces of the chip and of the line connector are covered with a polymer film having a thickness less than or equal to 10 μm.
2. The component according to claim 1 ,
wherein the line connector has at least a second bearing element and a third bearing element spaced apart therefrom, at which the line connector is attached to the inner side of the cavity.
3. The component according to claim 1 ,
wherein the line connector has at least a second bearing element,
wherein the at least one first and second connecting webs are arranged between the first bearing element and the second bearing element,
wherein the at least one first connecting web and the at least one second connecting web are connected to the first bearing element at different locations of the first bearing element.
4. The component according to claim 3 ,
wherein the at least one first connecting web and the at least one second connecting web are connected to the second bearing element at different locations of the second bearing element.
5. A component, comprising:
a chip having a plurality of side surfaces and having an electrical terminal;
a housing having a cavity, in which the chip is arranged, and an electrical line; and
a mechanically flexible line connector, which interconnects the electrical terminal of the chip with the electrical line, has a lower stiffness than the chip and is mechanically deformable,
wherein
the housing has an opening, through which the cavity is in contact with the atmosphere surrounding the component,
the chip is a sensor, and
wherein an inner side of the cavity and the surfaces of the chip and of the line connector are covered with a polymer film having a thickness less than or equal to 10 μm.
6. The component according to claim 5 , wherein the chip is a pressure sensor, a sound sensor, an optical sensor or a sensor for detecting a gas composition.
7. The component according to claim 5 , wherein the diameter of the opening is less than or equal to 100 μm.
8. The component according to claim 1 , wherein the housing comprises ceramic, a high temperature cofired ceramic (HTCC), or a low temperature cofired ceramic (LTCC).
9. The component according to claim 1 , wherein:
the housing comprises a multilayered HTCC or a multilayered LTCC,
metallization planes are arranged between the layers, and
the metallization planes overlap the base area of the cavity in total to the extent of at least 80% of the base area of the cavity.
10. The component according to claim 1 , wherein the cavity is covered with a metallization layer on the inside.
11. The component according to claim 1 , wherein:
the chip is operated at an electrical, mechanical or acoustic operating frequency, and
the natural frequency of the mechanical oscillator consisting of the chip and the mechanically flexible line connectors is less than 0.8 times the operating frequency of the chip.
12. The component according to claim 1 , wherein a further chip and a further electrical line are additionally arranged in the cavity and the further chip is interconnected with the electrical line or the further electrical line.
13. The component according to claim 1 , wherein an application-specific integrated circuit (ASIC) chip or a microelectromechanical system (MEMS) chip is interconnected as the chip.
14. The component of claim 1 , where the cavity is covered with a cover.
15. A component, comprising:
a chip having an electrical terminal;
a housing having a cavity, in which the chip is arranged, and an electrical line; and
a mechanically flexible line connector, which interconnects the electrical terminal of the chip with the electrical line, having a lower stiffness than the chip and being mechanically deformable, wherein the line connector has a first bearing element, at which the electrical terminal of the chip is connected to the line connector,
wherein
the line connector comprises at least a first connecting web and at least a second connecting web,
the first bearing element is coupled to the at least one first connecting web and the at least one second connecting web,
the at least one first connecting web and the at least one second connecting web connect the first bearing element with the electrical line,
the at least one first connecting web and the at least one second connecting web are arranged spaced apart from each other between the first bearing element and the electrical line,
the chip is operated at an electrical, mechanical or acoustic operating frequency, and
the natural frequency of the mechanical oscillator consisting of the chip and the mechanically flexible line connectors is less than 0.8 times the operating frequency of the chip.
16. The component of claim 15 , where the cavity is covered with a cover.
17. A component, comprising:
a chip having an electrical terminal;
a housing having a cavity and an electrical line,
wherein the chip is arranged in the cavity;
a mechanically flexible line connector, which interconnects the electrical terminal of the chip with the electrical line, has a lower stiffness than the chip and is mechanically deformable; and
a light-transparent polymer layer covering the chip and having a thickness less than or equal to 10 μm and an optical absorptance greater than 95% in the wavelength range of between 400 nm and 1100 nm.
18. The component according to claim 17 , wherein:
the housing comprises a multilayered HTCC or a multilayered LTCC,
metallization planes are arranged between the layers, and
the metallization planes overlap the base area of the cavity in total to the extent of at least 80% of the base area of the cavity.
19. The component according to claim 17 , wherein the cavity is covered with a metallization layer on the inside.
20. The component according to claim 17 , wherein:
the chip is operated at an electrical, mechanical or acoustic operating frequency, and
the natural frequency of the mechanical oscillator consisting of the chip and the mechanically flexible line connectors is less than 0.8 times the operating frequency of the chip.
21. The component according to claim 17 , wherein a further chip and a further electrical line are additionally arranged in the cavity and the further chip is interconnected with the electrical line or the further electrical line.
22. The component of claim 17 , wherein an inner side of the cavity and the surfaces of the chip and of the line connector are covered with a polymer film having a thickness less than or equal to 10μm.
23. The component of claim 17 , wherein the polymer layer is a polymer film that covers an inner side of the cavity and the surfaces of the chip and of the line connector.