Display device
View Patent ↗Provided is a display device making it possible to reduce or prevent occurrence of an inter-bump short circuit and a short circuit between a terminal and a bump even when the number of conductive particles in an ACF is large. The display device includes a display panel and a driver IC connected to the display panel via the ACF. The driver IC includes an input side bump and an output side bump and has a flow acceleration member on the upstream side of the output side bump relative to a flow direction of the ACF conductive particles when heating and pressurizing the ACF.
1. A display device, comprising:
a display panel; and
a driver IC connected to the display panel via an anisotropic conductive film, wherein
the driver IC includes a plurality of input side bumps and a plurality of output side bumps,
the plurality of output side bumps form two rows in a first direction and are arranged in a zigzag form,
a flow path extends along the first direction and is formed between the two rows,
a flow acceleration member is arranged on an upstream side of at least one of the output side bumps relative to a flow when heating and pressurizing the anisotropic conductive film, and
the flow acceleration member is formed in the flow path, made of a passivation film, and separated from each of the output side bumps.
2. The display device according to claim 1 , wherein the flow acceleration member is provided on the display panel.
3. The display device according to claim 2 , wherein the flow acceleration member is in the form of a triangle having a corner on the upstream side when viewing the display panel vertically from above.
4. The display device according to claim 3 , wherein the triangle is an equilateral triangle.
5. The display device according to claim 2 , wherein the flow acceleration member is arranged for each of the output side bumps of the two rows.
6. The display device according to claim 5 , wherein the flow acceleration member is provided on the upstream side of at least one of the input side bumps relative to the flow when heating and pressurizing the anisotropic conductive film.
7. The display device according to claim 2 , wherein the flow acceleration member is in the form of a V-shape having a corner on the upstream side when viewing the display panel vertically from above.
8. A display device, comprising:
a display panel; and
a rectangular driver IC connected to the display panel via an anisotropic conductive film, wherein
the driver IC includes a plurality of input side bumps and a plurality of output side bumps along mutually facing long sides,
the plurality of output bumps form two rows in a first direction and are arranged in zigzag form,
a flow path extends along the first direction and is formed between the two rows,
a flow acceleration member is arranged on an upstream side of at least one of the output side bumps relative to a flow when heating and pressurizing the anisotropic conductive film and is high enough to assure a distance that is at least a particle size of conductive particles in the anisotropic conductive film between the flow acceleration member and the driver IC, and
the flow acceleration member is formed in the flow path, made of a passivation film, and separated from each of the output side bumps.
9. The display device according to claim 8 , wherein the flow acceleration member is in the form of a triangle having a corner on the upstream side when viewing the display panel vertically from above.
10. The display device according to claim 8 , wherein the flow acceleration member is in the form of a V-shape having a corner on the upstream side when viewing the display panel vertically from above.
11. A display device, comprising:
a display panel; and
a rectangular driver IC connected to the display panel via an anisotropic conductive film, wherein
the driver IC includes a plurality of input side bump and a plurality of output side bumps along mutually facing long sides,
a flow path extends along the first direction and is formed between the two rows,
a flow acceleration member is arranged on an upstream side of at least one of the output side bumps relative to a flow when heating and pressurizing the anisotropic conductive film and is high enough to assure a distance that is at least a particle size of conductive particles in the anisotropic conductive film between the flow acceleration member and the display panel, and
the flow acceleration member is formed in the flow path, made of an insulating film, and separated from each of the output side bumps.
12. The display device according to claim 11 , wherein the flow acceleration member is in the form of a triangle having a corner on the upstream side when viewing the display panel vertically from above.
13. The display device according to claim 11 , wherein the flow acceleration member is in the form of a V-shape having a corner on the upstream side when viewing the display panel vertically from above.