Tape circuit substrate, semiconductor chip package including the same, and liquid crystal display device including the semiconductor chip package
View Patent ↗A liquid crystal display device includes a liquid crystal panel including a pad electrode, a tape circuit substrate and an anisotropic conductive film. The pad electrode receives one of a driving signal and a power supply voltage signal. The tape circuit substrate includes a base film made of an insulating material, and a signal line formed on the base film and having a slit at a portion of the signal line which overlaps the pad electrode of the liquid crystal panel. The anisotropic conductive film connects the outer lead with the pad electrode.
1. A liquid crystal display device comprising:
a liquid crystal panel including a pad electrode receiving one of a driving signal and a power supply voltage signal;
a tape circuit substrate including a base film made of an insulating material, and a signal line formed on the base film and having a slit at a portion of the signal line which overlaps the pad electrode of the liquid crystal panel; and
an anisotropic conductive film connecting the signal line with the pad electrode;
wherein the signal line comprises:
an inner lead electrically connected to a semiconductor chip;
an outer lead formed on the base film and having the slit; and
a connection wire formed on the base film to electrically connect the inner lead to the outer lead; and
wherein collective portions of the outer lead defined by the slit are connected to a single pad electrode.
2. The liquid crystal display device of claim 1 , wherein the slit is formed at an end portion of the outer lead.
3. The liquid crystal display device of claim 2 , wherein the slit includes three edges defined by the outer lead.
4. The liquid crystal display device of claim 1 , wherein the slit has a width being at least 1/20 of a width of an overlap region between the pad electrode and the outer lead.
5. The liquid crystal display device of claim 1 , wherein the slit has a length ranging from about 1/10 to about 9/10 of a length of an overlap region between the pad electrode and outer lead.
6. The liquid crystal display device of claim 1 , wherein the outer lead further comprises a plurality of slits.
7. The liquid crystal display device of claim 6 , wherein each of the slits has a same width.
8. The liquid crystal display device of claim 6 , wherein each of the slits has a same length.
9. The liquid crystal display device of claim 1 , wherein the slit is formed at an interior portion of the outer lead such that the slit includes four edges defined by the outer lead.
10. The liquid crystal display device of claim 1 , wherein the slit provides a surge volume to receive the anisotropic conductive film in response to pressurizing the anisotropic conductive film between the outer lead and the pad electrode.
11. A semiconductor chip package comprising:
a tape circuit substrate including a base film made using an insulating material, an inner lead electrically connected to a semiconductor chip, an outer lead formed on the base film and having a slit disposed at an overlap region between a pad electrode of a liquid crystal panel and the outer lead, and a connection wire formed on the base film to electrically connect the inner lead to the outer lead; and
a semiconductor chip mounted on the tape circuit substrate to be electrically connected to the inner lead;
wherein collective portions of the outer lead defined by the slit are connected to a single pad electrode.
12. The semiconductor chip package of claim 11 , wherein the slit is formed at an end portion of the outer lead.
13. The semiconductor chip package of claim 11 , wherein the slit is formed at an interior portion of the outer lead such that the slit includes four edges defined by the outer lead.
14. A tape circuit substrate comprising:
a base film made of an insulating material;
an inner lead electrically connected to a semiconductor chip;
an outer lead formed on the base film and having a slit disposed at an overlap region between a pad electrode of a liquid crystal panel and the outer lead, the slit being formed at an end portion of the outer lead; and
a connection wire formed on the base film to electrically connect the inner lead to the outer lead
wherein collective portions of the outer lead defined by the slit are connected to a single pad electrode.
15. The tape circuit substrate of claim 14 , wherein the slit provides a surge volume to receive an anisotropic conductive film that connects the outer lead to the pad electrode in response to pressurizing the anisotropic conductive film between the outer lead and the pad electrode.
16. The tape circuit substrate of claim 14 , wherein the slit has a width being at least 1/20 of a width of the overlap region.
17. The tape circuit substrate of claim 14 , wherein the slit has a length ranging from about 1/10 to about 9/10 of a length of the overlap region.
18. The tape circuit substrate of claim 14 , wherein the outer lead further comprises a plurality of slits.
19. The tape circuit substrate of claim 18 , wherein each of the slits has at least one of a same length and a same width.
20. The liquid crystal display device of claim 1 , wherein a portion that connects the connection wire and the outer lead has a structure that gradually increases in width toward the outer lead.
21. The semiconductor chip package of claim 11 , wherein a portion that connects the connection wire and the outer lead has a structure that gradually increases in width toward the outer lead.
22. The tape circuit substrate of claim 14 , wherein a portion that connects the connection wire and the outer lead has a structure that gradually increases in width toward the outer lead.