Display panel, display apparatus having the same and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9634034-B2
Application number	US-201414460133-A
Country	US
Kind code	B2
Filing date	Aug 14, 2014
Priority date	Jan 2, 2014
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A display panel includes a display area configured to display an image, and a peripheral area adjacent to the display area. The peripheral area includes a pad area in which a plurality of output pads are disposed. The output pads are arranged in a matrix formed having M row*N column (M and N are normal numbers, M is 3 or larger than 3). Each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad by a distance D in a first direction. Each of the output pads is spaced apart from an adjacent output pad by a gap. Each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad by a pitch P in a second direction which is substantially perpendicular to the first direction. An equation “P<D/(M−1)” is satisfied.

First claim

What is claimed is:

1. A display panel comprising:
a display area configured to display an image, and a peripheral area adjacent to the display area,
wherein the peripheral area comprises a pad area in which a plurality of output pads are disposed, and the output pads are arranged in a matrix formed having M row*N column, M and N are normal numbers, M is 3 or larger than 3, the M row extending in a first direction and the N column extending, in a second direction which is substantially perpendicular to the first direction,
each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the first direction by a distance D in the first direction, and each of the output pads is spaced apart from an adjacent output pad by a gap,
each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the second direction by a pitch P in the first direction; and
an equation “P<D/(M−1)” is satisfied,
each of the output pads extends in the second direction, and has a width in the first direction, and
each of the output pads comprises a first side having a first length and a second side having a second length, the first side extending in the second direction, the second side is in parallel with the first side, and the second length is smaller than the first length,
wherein further the display panel comprises:
a base substrate;
a first output pattern disposed on the base substrate;
a first insulation layer disposed on the first base substrate on which the first output pattern is disposed;
a second output pattern disposed on the first insulation layer; and
a second insulation layer disposed on the first insulation layer on which the second output pattern is disposed,
wherein the output pads are disposed on the second insulation layer,
the output pads comprises a first output pad in a first row and a second output pad in a second row,
the first output pad is electrically connected to the first output pattern through a first contact hole formed through the first and second insulation layer, and
the second output pad is electrically connected to the second output pattern through a second contact hole formed through the second insulation layer.

2. The display panel of claim 1 , further comprising:
a driving chip comprising a plurality of output bumps corresponding to the output pads, respectively; and
an anisotropic conductive film between the output pads and the output bumps to electrically connect the output pads to the output bumps.

3. The display panel of claim 1 , wherein the output pads are disposed in bilateral symmetry with respect to a line, and the line passes a center of the pad area and extends in the second direction.

4. The display panel of claim 1 , wherein the output pads are arranged in three rows such that M=3,
the distance D is about 33 μm, and the pitch P is about 11 μm.

5. The display panel of claim 1 , wherein the output pads comprises a transparent conductive material.

6. The display panel of claim 1 , wherein a switching element and a pixel electrode electrically connected to the switching element are disposed in the display area,
the switching element comprises a gate electrode disposed on the first base substrate, a channel portion overlapping the gate electrode, a source electrode disposed on the channel portion and a drain electrode spaced apart from the source electrode.

7. The display panel of claim 6 , wherein the gate electrode and the first output pattern are formed from a same layer, and
the source electrode, the drain electrode and the second output pattern are formed from a same layer.

8. The display panel of claim 6 , wherein the pixel electrode and the output pads are formed from a same layer.

9. The display panel of claim 6 , wherein the first output pattern and the second output pattern are alternately disposed.

10. The display panel of claim 1 , wherein the peripheral area further comprises an output fan-out area between the output pads and the display area,
a plurality of output lines are disposed in the output fan-out area, and a width of the output lines are expanded from the output pads to the display area.

11. A display apparatus comprising:
a display panel; and
a receiving container receiving the display panel,
wherein the display panel includes a display area configured to display an image, and a peripheral area adjacent to the display area,
the peripheral area comprises a pad area in which a plurality of output pads are disposed, and the output pads are arranged in a matrix formed having M row*N column, M and N are normal numbers, M is 3 or larger than 3, the M row extending in a first direction and the N column extending in a second direction which is substantially perpendicular to the first direction,
each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the first direction by a distance D in the first direction, and each of the output pads is spaced apart from an adjacent output pad by a gap,
each of the output pads has a center of the output pad spaced apart from a center of an adjacent output pad in the second direction by a pitch P in the first direction, and
an equation “P<D/(M−1)” is satisfied,
each of the output pads extends in the second direction, and has a width in the first direction, and
each of the output pads comprises a first side having a first length and a second side having a second length, the first side extending in the second direction, the second side is in parallel with the first side, and the second length is smaller than the first length,
wherein further the display panel comprises:
a base substrate;
a first output pattern disposed on the base substrate;
a first insulation layer disposed on the first base substrate on which the first output pattern is disposed;
a second output pattern disposed on the first insulation layer; and
a second insulation layer disposed on the first insulation layer on which the second output pattern is disposed,
wherein the output pads are disposed on the second insulation layer,
the output pads comprises a first output pad in a first row and a second output in a second row,
the first output pad is electrically connected to the first output pattern through a first contact hole formed through the first and second insulation layer, and
the second output pad is electrically connected to the second output pattern through a second contact hole formed through the second insulation layer.

12. The display apparatus of claim 11 , further comprising:
a driving part configured to generate an input signal; and
a connecting pan electrically connecting the display panel to the driving part,
wherein a plurality of input pads are disposed in the pad area of the display panel, and the connecting part is electrically connected to the input pads and configured to transmit the input signal from the driving part to the input pads.

Assignees

• Samsung Display Co Ltd

Inventors

• Moh Sang-Moon
• Kim Luck-Hyun

Classifications

• G02F1/13452

  Conductors connecting driver circuitry and terminals of panels · CPC title

• H01L27/1225

  Electricity · mapped topic

• H01L27/124 Primary

  Electricity · mapped topic

• G02F1/13458 Primary

  Terminal pads · CPC title

• H01L27/1259

  Electricity · mapped topic