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US 12,757,325 B2Granted
Circuit board unit and electronic apparatus
AssigneeSeiko Epson Corporation
InventorsYu Masago, Toshiyuki Omori, Masaaki Ito, Takeshi Hirai
Life of this patent
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Abstract
A circuit board unit includes a first circuit board having a first ground layer, a second circuit board having a second ground layer and arranged so as to be opposed to the first circuit board, a connector unit having a first connector attached to the first circuit board, and a second connector attached to the second circuit board and coupled to the first connector, and a metal member arranged between the first circuit board and the second circuit board, and configured to electrically couple the first ground layer and the second ground layer to each other. The metal member is arranged so as to be adjacent to the connector unit.
Claims10
A circuit board unit comprising:
- a first circuit board having a first ground layer;
- a second circuit board having a second ground layer and arranged so as to be opposed to the first circuit board;
- a connector unit having a first connector attached to the first circuit board, and a second connector attached to the second circuit board and coupled to the first connector;
- and
- a metal member arranged between the first circuit board and the second circuit board, and configured to electrically couple the first ground layer and the second ground layer to each other, wherein
- the metal member is arranged so as to be adjacent to the connector unit,
- the connector unit has a shape elongated in a predetermined direction when viewed in a coupling direction in which the first connector and the second connector are coupled to each other,
- the metal member is arranged so as to be adjacent in the predetermined direction to the connector unit
- the first circuit board is provided with a plurality of signal lines arranged side by side in the predetermined direction, the plurality of signal lines being each electrically coupled to the first connector,
- the plurality of signal lines includes a first signal line and a second signal line through which a signal higher in frequency than a signal flowing through the first signal line, and
- the second signal line is arranged at a position closer to the metal member than the first signal line in the predetermined direction.
8 more elements
A circuit board unit comprising:
- a first circuit board having a first ground layer;
- a second circuit board having a second ground layer and arranged so as to be opposed to the first circuit board;
- a connector unit having a first connector attached to the first circuit board, and a second connector attached to the second circuit board and coupled to the first connector;
- and
- a metal member arranged between the first circuit board and the second circuit board, and configured to electrically couple the first ground layer and the second ground layer to each other, wherein
- the metal member is arranged so as to be adjacent to the connector unit,
- the first circuit board has a pair of the first ground layers disposed as respective layers different from each other, and
- the pair of first ground layers are electrically coupled to each other.
5 more elements
A projector comprising:
- a light source device that emits illumination light;
- a color separation optical system that separates the illumination light into red light, green light, and blue light;
- a first light modulation device that modulates the red light to form image light corresponding to the red light;
- a second light modulation device that modulates the green light to form image light corresponding to the green light;
- a third light modulation device that modulates the blue light to form image light corresponding to the blue light;
- and
- a circuit board unit that controls the light source device, wherein
- the circuit board unit comprises:
- a first circuit board having a first ground layer;
- a second circuit board having a second ground layer and arranged so as to be opposed to the first circuit board;
- a connector unit having a first connector attached to the first circuit board, and a second connector attached to the second circuit board and coupled to the first connector;
- and
- a metal member arranged between the first circuit board and the second circuit board, and configured to electrically couple the first ground layer and the second ground layer to each other,
- the first circuit board has a pair of the first ground layers disposed as respective layers different from each other, and
- the pair of first ground layers are electrically coupled to each other.
12 more elements
Dependencies are inferred from the claim text.