Insulating layer between bumps of semiconductor chip, and display panel using the same with anisotropic conductive film between semiconductor chip and substrate
View Patent ↗A semiconductor chip and manufacturing method thereof, the semiconductor chip including a plurality of bumps connected to a driving circuit integrated on a semiconductor substrate and an organic insulating layer disposed on the driving circuit. The organic insulating layer extends from the semiconductor substrate less than the plurality of bumps such that a lower edge of the plurality of bumps protrudes further than a lower edge of the organic insulating layer.
1. A display panel comprising:
a substrate;
an electrode pad disposed on the substrate;
a first insulating layer disposed on the substrate, between the electrode pad and an adjacent electrode pad, and including an open hole isolating the electrode pad;
a protective layer disposed between the substrate and the first insulating layer, and
a semiconductor chip including a bump electrically connected to the electrode pad through a conductive particle which is interposed between the bump and the electrode pad,
wherein the first insulating layer reduces a space between the bump and an adjacent bump such that the first insulating layer prevents the conductive particle connected to the bump from moving to the space between the adjacent bumps.
2. The display panel according to claim 1 , wherein the first insulating layer is an organic insulating layer.
3. The display panel according to claim 1 , wherein the electrode pad comprises:
a lower electrode pad connected to a signal line formed on the substrate; and
an upper electrode pad connected to the lower electrode pad through a contact hole of a second insulating layer formed on the lower electrode pad.
4. The display panel according to claim 1 , wherein a cross sectional area of the open hole is larger than that of the electrode pad.
5. The display panel according to claim 1 , wherein the first insulating layer is extended from the substrate further than the electrode pad.
6. The display panel according to claim 5 , wherein the first insulating layer extends to a height lower than a bump.
7. A display panel including:
a semiconductor chip comprising:
a plurality of bumps connected to a driving circuit integrated on a first substrate;
a first insulating layer disposed on the driving circuit and between adjacent bumps; and
a protective layer disposed between the first substrate and the first insulating layer,
wherein the first insulating layer is extended from the first substrate less than the plurality of bumps;
a second substrate;
an electrode pad formed on the second substrate and connected to a signal line formed on the second substrate;
an anisotropic conductive film attaching the semiconductor chip to the second substrate and including a conductive particle connecting a bump of the semiconductor chip to the electrode pad, and
a second insulating layer disposed on the second substrate, between the electrode pad and an adjacent electrode pad, and including an open hole isolating the electrode pad;
wherein the first insulating layer and the second insulating layer reduce a space between the adjacent bumps such that the first insulating layer and the second insulating layer prevent the conductive particle connected to the bump of the semiconductor chip from moving to the space between the adjacent bumps.
8. The display panel according to claim 7 , wherein the first insulating layer and the second insulating layer are organic insulating layers.
9. The display panel according to claim 7 , wherein the electrode pad comprises:
a lower electrode pad connected to the signal line formed on the second substrate; and
an upper electrode pad connected to the lower electrode pad through a contact hole of a third insulating layer formed on the lower electrode pad.
10. The display panel according to claim 7 , wherein a cross sectional area of the open hole formed on the second insulating layer is larger than a cross sectional area of the electrode pad.
11. The display panel according to claim 7 , wherein the second insulating layer extends further from the second substrate than the electrode pad.
12. The display panel according to claim 7 , wherein the first and second insulating layers are separated from each at predetermined intervals from each other when the semiconductor chip is packaged on the second substrate.
13. A display panel comprising:
a semiconductor chip comprising:
a plurality of bumps connected to a driving circuit integrated on a first substrate;
a first insulating layer being formed with a smaller thickness than the plurality of bumps, the first insulating layer being formed between pairs of bumps; and
a protective layer disposed between the first substrate and the first insulating layer;
a second substrate;
an electrode pad formed on the second substrate and connected to a signal line formed on the second substrate;
an anisotropic conductive film attaching the semiconductor chip to the second substrate and including a conductive particle connecting a bump of the semiconductor chip to the electrode pad, and
a second insulating layer disposed on the second substrate, between the electrode pad and an adjacent electrode pad, and including an open hole isolating the electrode pad
wherein the first insulating layer and the second insulating layer reduce a space between adjacent bumps such that the first insulating layer and the second insulating layer prevent the conductive particle connected to the bumps from moving to the space to between adjacent bumps.