1. A transmission for a hybrid electric vehicle, comprising:
an input element where rotation power is inputted and an output element from which the rotation power is outputted;
a first motor generator and a second motor generator;
a first planetary gear set that is a multiple planetary gear set having at least four or more rotary elements with which the input element, the output element, and the first motor generator are connected;
a second planetary gear set with which the output element and the second motor generator are connected; and
a first clutch and a second clutch,
wherein a first rotary element of the first planetary gear set and a first rotary element of the second planetary gear set are kept connected with the output element, a second rotary element and a third rotary element of the first planetary gear set are connected with the input element and the first motor generator, respectively,
a second rotary element of the second planetary gear set is connected with the second motor generator,
a third rotary element of the second planetary gear set is switched to be rotatable by the first clutch, and
a fourth rotary element of the first planetary gear set and the third rotary element of the second planetary gear set are switched to be selectively connected by the second clutch.
2. The transmission for the hybrid electric vehicle according to claim 1, further comprising a third clutch that switches a rotatable state of one rotary element, which is not connected with the output element and the first clutch, in the rotary elements of the second planetary gear set, in order to make a fixed gear stage when the second clutch operates.
3. The transmission for the hybrid electric vehicle according to claim 1, further comprising a fourth clutch that selectively connects the second rotary element of the first planetary gear set with the second rotary element of the second planetary gear set.
4. The transmission for the hybrid electric vehicle according to claim 1, wherein the first rotary element of the second planetary gear set is a carrier.
5. The transmission for the hybrid electric vehicle according to claim 1, wherein the first rotary element is a carrier, the second rotary element is a sun gear, and the third rotary element is a ring gear, in the second planetary gear set.
6. The transmission for the hybrid electric vehicle according to claim 1, wherein the first planetary gear set is a multiple planetary gear set composed of a planetary gear set including first, second, and third rotary elements and a planetary gear set including first, third, and fourth rotary elements.
7. The transmission for the hybrid electric vehicle according to claim 6, wherein the first, second, and third rotary elements of the planetary gear set including the first, second, and third rotary elements of the first planetary gear set are a carrier, a ring gear, and a sun gear, respectively.
8. The transmission for the hybrid electric vehicle according to claim 6, wherein the first, third, and fourth rotary elements of the planetary gear set including the first, third, and fourth rotary elements of the first planetary gear set are a sun gear, a ring gear, and a carrier, respectively.
9. The transmission for the hybrid electric vehicle according to claim 6, wherein the first, third, and fourth rotary elements of the planetary gear set including the first, third, and fourth rotary elements of the first planetary gear set are a sun gear, a carrier, and a ring gear, respectively.
10. The transmission for the hybrid electric vehicle according to claim 1, wherein the first planetary gear set is a multiple planetary gear set composed of a planetary gear set including first, second, and third rotary elements and a planetary gear set including first, second, and fourth rotary elements.
11. The transmission for the hybrid electric vehicle according to claim 10, wherein the first, second, and third rotary elements of the planetary gear set including the first, second, and third rotary elements of the first planetary gear set are a carrier, a ring gear, and a sun gear, respectively.
12. The transmission for the hybrid electric vehicle according to claim 10, wherein the first, second, and fourth rotary elements of the planetary gear set including the first, second, and fourth rotary elements of the first planetary gear set are a carrier, a ring gear, and a sun gear, respectively.
13. The transmission for the hybrid electric vehicle according to claim 10, wherein the first, second, and fourth rotary elements of the planetary gear set including the first, second, and fourth rotary elements of the first planetary gear set are a ring gear, a carrier, and a sun gear, respectively.
14. The transmission for the hybrid electric vehicle according to claim 1, further comprising a third clutch that switches a rotatable state of the second rotary element connected with the second motor generator of the second planetary gear set in order to make a fixed gear stage when the second clutch operates.
15. A transmission for a hybrid electric vehicle, comprising:
a first planetary gear set including at least four or more rotary elements having three rotary elements connected with an input element, an output element, and a first motor generator, respectively;
a second planetary gear set including three rotary elements having a rotary element connected to the output element and a rotary element connected to a second motor generator;
a first clutch switching a rotatable state of the other one rotary element that is not connected to the output element and the second motor generator, in the rotary elements of the second planetary gear set; and
a second clutch selectively connecting the rotary element of the first planetary gear set, which has the same rotation speed as the rotary element where the first clutch is connected in the second planetary gear set, with the rotary element where the first clutch is connected in the second planetary gear set, for the rotary element of the first planetary gear set and the rotary element of the second planetary gear set, which are both connected to the output element.
16. The transmission for the hybrid electric vehicle according to claim 15, further comprising a third clutch that switches a rotatable state of the rotary element of the second planetary gear set which is connected with the second motor generator.
17. The transmission for the hybrid electric vehicle according to claim 16, further comprising a fourth clutch that connectsdisconnects the rotary element, which is connected with the input element, of the first planetary gear set withfrom the rotary element, which is connected with the second motor generator, of the second planetary gear set.
18. The transmission for the hybrid electric vehicle according to claim 15, wherein the second planetary gear set is a single pinion planetary gear set,
the rotary element connected to the second motor generator of the second planetary gear set is a sun gear,
the rotary element connected to the output element of the second planetary gear set is a carrier, and
the rotary element connected to the first clutch of the second planetary gear set is a ring gear.
19. The transmission for the hybrid electric vehicle according to claim 18, wherein the first planetary gear set has two single pinion planetary gear sets including two pairs of rotary elements that are kept connected,
a pair of the two pairs of rotary elements that are kept connected is connected to the output element,
the other pair of the two pairs of rotary elements that are kept connected is connected to the first motor generator, and
the other rotary elements that are not included in the pairs are connected to the input element and the second clutch, respectively.
20. The transmission for the hybrid electric vehicle according to claim 19, wherein in the two pairs of rotary elements that are kept connected of the first planetary gear set, the sun gear of one planetary gear set is connected to a ring gear of another planetary gear set and a carrier of one planetary gear set is connected to a sun gear of the other planetary gear set.
21. The transmission for the hybrid electric vehicle according to claim 18, wherein the first planetary gear set has two single pinion planetary gear sets including two pairs of rotary elements that are kept connected,
a pair of the two pairs of rotary elements that are kept connected is connected to the output element,
the other pair of the two pairs of rotary elements that are kept connected is connected to the input element, and
the other rotary elements that are not included in the two pairs are connected to the first motor generator and the second clutch, respectively.
22. The transmission for the hybrid electric vehicle according to claim 21, wherein in the two pairs of rotary elements that are kept connected in the first planetary gear set, a carrier of one planetary gear set is connected to a carrier of another planetary gear set and a ring gear of one planetary gear set is connected to a ring gear of the other planetary gear set.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A high frequency semiconductor device including a high frequency semiconductor chip, comprising:
an active region and a front face wiring provided on a front face side of the high frequency semiconductor chip;
a covering electrode covering the active region and the front face wiring, and connected to a ground potential;
a protection layer intervening between the covering electrode, and the active region and the front face wiring; and
a back face wiring provided on a back face side of the high frequency semiconductor chip, and forming a high frequency transmission line together with the covering electrode as a high frequency ground plate,
wherein the front face wiring forms another high frequency transmission line together with the covering electrode.
2. The high frequency semiconductor device as claimed in claim 1, wherein at least a portion of at least one of the back face wiring and the front face wiring is an inductor element.
3. The high frequency semiconductor device as claimed in claim 2, wherein the inductor element has a spiral form or a meandering form.
4. The high frequency semiconductor device as claimed in claim 1, further comprising a capacitance electrode on at least one of the front face side and the back face side of the high frequency semiconductor chip, wherein the capacitance electrode forms a capacitance element together with the covering electrode.
5. The high frequency semiconductor device as claimed in claim 1, wherein the protection layer is made of silicon nitride.
6. The high frequency semiconductor device as claimed in claim 1, further comprising a back face electrode provided on the back face side of the high frequency semiconductor chip, the back face electrode being an input or output terminal of an electric potential for the high frequency semiconductor chip.
7. The high frequency semiconductor device as claimed in claim 6, wherein the back face electrode is a wire-bonding pad.
8. The high frequency semiconductor device as claimed in claim 6, wherein the back face electrode is a bump connection pad for mounting another semiconductor chip thereon.
9. The high frequency semiconductor device as claimed in claim 1 further comprising a front face electrode provided at a region where the covering electrode does not exist on the front face side of the high frequency semiconductor chip, wherein the front face electrode is an input or output terminal of an electric potential for the high frequency semiconductor chip.
10. The high frequency semiconductor device as claimed in claim 9, wherein the front face electrode is a bump connection pad for connecting to a connecting bump.
11. The high frequency semiconductor device as claimed in claim 1, wherein the front face side of the high frequency semiconductor chip is a mounting face.
12. The high frequency semiconductor device as claimed in claim 11, wherein the high frequency semiconductor chip is mounted on a mounting substrate comprising a wiring board.
13. The high frequency semiconductor device as claimed in claim 11, wherein the high frequency semiconductor chip is mounted on the mounting substrate comprising a semiconductor chip.
14. A high frequency semiconductor device including a high frequency semiconductor chip, comprising:
an active region and a front face wiring provided on a front face side of the high frequency semiconductor chip;
a covering electrode covering the active region and the front face wiring, and connected to a ground potential;
a protection layer intervening between the covering electrode, and the active region and the front face wiring; and
a back face passive element provided on a back face side of the high frequency semiconductor chip, wherein the covering electrode functions as a high frequency ground plate for the back face passive element,
wherein the front face wiring forms a high frequency transmission line together with the covering electrode as a ground plate.
15. The high frequency semiconductor device as claimed in claim 14, wherein the active region and the back face passive element are arranged so as not to overlap with each other.