Electrooptical device, mounting assembly, method for producing electrooptical device, and electronic apparatus
View Patent ↗An electrooptical device includes a substrate and an electronic component mounted on the substrate with an adhesive. The substrate has terminals arranged thereon and wiring lines connected to the terminals and extending in a column direction. The terminals are divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the column direction. The terminals of the first terminal group are shifted from each other in a row direction so that the adjacent terminals overlap each other in the column direction. The terminals of the second terminal group are shifted from each other in the row direction so that the adjacent terminals overlap each other in the column direction.
1. An electro-optical device, comprising:
a substrate having terminals and wiring lines arranged thereon,
the wiring lines being connected to the terminals and extending in a first direction,
the terminals being divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the first direction,
each of the first and second terminal groups having at least three terminals that do not overlap each other in plane view,
each terminal of the first and second terminal groups having a width in a second direction that intersects the first direction,
in each pair of adjacent terminals in each of the first and second terminal groups, one of the adjacent terminals having a first portion and a second portion, the first portion overlapping the width of the other terminal in the first direction, the second portion being located without overlapping the width of the other terminal in the first direction, one of the wiring lines being connected to the second portion; and
an electronic component mounted on the substrate with an adhesive;
wherein
the wiring lines connected to the second portions of the terminals of the first terminal group extend between a first terminal of the first terminal group and a first terminal of the second terminal group;
the wiring lines connected to the second portions of the terminals of the first terminal group extend linearly in the first direction at least between the first terminal of the first terminal group and the first terminal of the second terminal group; and
the electro-optical device further comprises:
second wiring lines extending in the first direction and electrically connected to the first portions of the terminals of the first and second terminal groups at sides opposite to where the wiring lines are electrically connected to the respective second portions.
2. The electro-optical device according to claim 1 , satisfying the following relationship:
d≧ ( N −1)× Z 2 +N×Z 1
wherein
Z 1 is an interval between adjacent ones of the wiring lines connected to the second portions of the terminals of the first terminal group;
Z 2 is a width of each of the wiring lines in the second direction;
N is the number of the terminals of the first terminal group; and
d is an interval between the first terminal of the first terminal group and the first terminal of the second terminal group.
3. The electro-optical device according to claim 2 , wherein Z 1 and Z 2 are equal,
the electro-optical device satisfying the following relationship:
s =2 d /(2 N −1)
wherein
s is a dimension in the second direction of the second portion of the terminals of the first and second terminal groups.
4. The electro-optical device according to claim 1 , wherein
the second portions of the terminals of the first terminal group include corners of the terminals of the first terminal group facing the second terminal group; and
the wiring lines are electrically connected to said corners of the terminals of the first terminal group.
5. A mounting assembly, comprising an electro-optical device according to claim 1 .
6. A method of producing an electro-optical device, said method comprising:
forming terminals and wiring lines on a substrate,
the wiring lines being connected to the terminals and extending in a first direction,
the terminals being divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the first direction,
each of the first and second terminal groups having at least three terminals that do not overlap each other in plane view,
each terminal of the first and second terminal groups having a width in a second direction that intersects the first direction,
in each pair of adjacent terminals in each of the first and second terminal groups, one of the adjacent terminals having a first portion and a second portion, the first portion overlapping the width of the other terminal in the first direction, the second portion being located without overlapping the width of the other terminal in the first direction, one of the wiring lines being connected to the second portion;
wherein
the wiring lines connected to the second portions of the terminals of the first terminal group extend between a first terminal of the first terminal group and first terminal of the second terminal group;
the wiring lines connected to the second portions of the terminals of the first terminal group extend linearly in the first direction at least between the first terminal of the first terminal group and the first terminal of the second terminal group; and
second wiring lines are further formed to extend in the first direction and to be electrically connected to the first portions of the terminals of the first and second terminal groups at sides opposite to where the wiring lines are electrically connected to the respective second portions; and
mounting an electronic component on the substrate by pressing the electronic component against the substrate with an adhesive disposed therebetween.
7. The method according to claim 6 , wherein an interval between adjacent ones of the wiring lines connected to the terminals of the first terminal group is set to the minimum width possible by photolithography.
8. An electronic apparatus, comprising the electro-optical device according to claim 1 .
9. An electro-optical device, comprising:
a substrate having terminals arranged thereon and wiring lines connected to the terminals and extending in a column direction, the terminals being divided into at least one first terminal group and at least one second terminal group that does not overlap the first terminal group in the column direction, the terminals of the first terminal group being shifted from each other in a row direction so that the adjacent terminals overlap each other in the column direction, the terminals of the second terminal group being shifted from each other in the row direction so that the adjacent terminals overlap each other in the column direction; and
an electronic component mounted on the substrate with an adhesive;
wherein the wiring lines connected to the terminals of the first terminal group in second and subsequent rows extend between the terminal of the first terminal group in a first row and the terminal of the second terminal group in the first row;
said electro-optical device satisfying the following relationship:
d ≧( N −1)× Z 2 +N×Z 1
where
Z 1 is an interval between the wiring lines connected to the terminals of the first terminal group in the first and second rows;
Z 2 is the width of the wiring lines;
N is the number of the terminals of the first terminal group; and
d is an interval between the terminal of the first terminal group in the first row and the terminal of the second terminal group in the first row;
wherein
the wiring lines connected to the terminals of the first terminal group in the second and subsequent rows extend linearly in the column direction at least between the terminal of the first terminal group in the first row and the terminal of the second terminal group in the first row; and
the electro-optical device further comprises:
second wiring lines extending in the column direction and electrically connected to the terminals at sides opposite to where the wiring lines are electrically connected.
10. The electro-optical device according to claim 9 , wherein Z 1 and Z 2 are equal,
the electro-optical device satisfying the following relationship:
s =2 d /(2 N −1)
where
s is the amount of shift of the terminal of the first terminal group in the second row from the terminal of the first terminal group in the first row.
11. The electro-optical device according to claim 9 , wherein the wiring lines connected to the terminals of the first terminal group are electrically connected to corners of the terminals of the first terminal group facing the second terminal group.
12. A mounting assembly, comprising an electro-optical device according to claim 9 .
13. An electronic apparatus, comprising the electro-optical device according to claim 9 .