Electronic device

Patent metadata

Field	Value
Publication number	US-2024347012-A1
Application number	US-202418401981-A
Country	US
Kind code	A1
Filing date	Jan 2, 2024
Priority date	Apr 17, 2023
Publication date	Oct 17, 2024
Grant date	—

Abstract

An electronic device includes: a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver. The adhesive layer includes: an adhesive resin in contact with the display panel and the data driver; and a conductive particle disposed inside the adhesive resin and in contact with and electrically connected to the display panel and the data driver. The data driver includes a groove defined in a surface thereof facing the display panel, and a length of the groove in a first direction perpendicular to the thickness direction is smaller than or equal to a diameter of the conductive particle.

First claim

What is claimed is:

1 . An electronic device comprising:
a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver, wherein the adhesive layer includes:
an adhesive resin in contact with the display panel and the data driver; and
a conductive particle disposed inside the adhesive resin and in contact with and electrically connected to the display panel and the data driver,
wherein the data driver includes a groove defined in a surface thereof facing the display panel, and a length of the groove in a first direction perpendicular to the thickness direction is smaller than or equal to a diameter of the conductive particle.

2 . The electronic device of claim 1 ,
wherein the data driver further includes:
an insulating layer defining an opening exposing a portion of the second pad and disposed under the second pad; and
a conductive layer in which the groove is defined and which is disposed under the insulating layer while covering the exposed portion of the second pad,
wherein the conductive particle is in contact with and electrically connected to the conductive layer of the data driver.

3 . The electronic device of claim 1 , wherein the conductive particle is in contact with and electrically connected to the first pad of the display panel.

4 . The electronic device of claim 1 , wherein a shortest distance between the display panel and the data driver in the thickness direction is smaller than or equal to the diameter of the conductive particle.

5 . The electronic device of claim 1 , wherein the adhesive layer is an anisotropic conductive film.

6 . The electronic device of claim 1 , wherein a length of the groove in a second direction perpendicular to both the first direction and the thickness direction is smaller than or equal to the diameter of the conductive particle.

7 . An electronic device comprising:
a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver, wherein the adhesive layer includes:
an adhesive resin in contact with the display panel and the data driver; and
a conductive particle disposed inside the adhesive resin and in contact with and electrically connected to the display panel and the data driver,
wherein the data driver defines a plurality of grooves arranged in a surface thereof facing the display panel and spaced apart from each other in a second direction perpendicular to the thickness direction, and lengths of the plurality of grooves in the second direction and lengths of the plurality of grooves in a first direction perpendicular to both the second direction and the thickness direction are each smaller than or equal to a diameter of the conductive particle.

8 . The electronic device of claim 7 ,
wherein the data driver further includes:
an insulating layer defining a plurality of openings exposing a portion of the second pad and disposed under the second pad; and
a conductive layer in which the plurality of grooves are defined and which is disposed under the insulating layer while covering the exposed portion of the second pad,
wherein the conductive particle is in contact with and electrically connected to the conductive layer of the data driver.

9 . The electronic device of claim 7 , wherein the conductive particle is in contact with and electrically connected to the first pad of the display panel.

10 . The electronic device of claim 7 , wherein a shortest distance between the display panel and the data driver in the thickness direction is smaller than or equal to the diameter of the conductive particle.

11 . The electronic device of claim 7 , wherein the adhesive layer is an anisotropic conductive film.

12 . An electronic device comprising:
a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver, wherein the first pad includes:
a first conductive pattern;
an insulating pattern disposed on the first conductive pattern and configured to define a protrusion protruding in a direction from the display panel toward the data driver; and
a second conductive pattern disposed on the insulating pattern,
wherein the second conductive pattern is in contact with and electrically connected to the data driver, the data driver includes a groove defined in a surface thereof facing the display panel, and a length of the groove in a first direction perpendicular to the thickness direction is smaller than or equal to a length of a top surface of the second conductive pattern in the first direction.

13 . The electronic device of claim 12 ,
wherein the data driver further includes:
an insulating layer defining an opening exposing a portion of the second pad and disposed under the second pad; and
a conductive layer in which the groove is defined and which is disposed under the insulating layer while covering the exposed portion of the second pad,
wherein the second conductive pattern is in contact with and electrically connected to the conductive layer of the data driver.

14 . The electronic device of claim 13 , wherein a length of the opening of the insulating layer in the first direction is smaller than or equal to ⅓ a length of the second pad in the first direction.

15 . The electronic device of claim 13 , wherein the adhesive layer is a non-conductive film.

16 . The electronic device of claim 13 , wherein the insulating pattern includes a polymer.

17 . An electronic device comprising:
a display panel including a first pad; a data driver including a second pad disposed to overlap the first pad in a thickness direction of the display panel and disposed on the display panel; and an adhesive layer disposed between the display panel and the data driver, wherein the first pad includes:
a first conductive pattern;
an insulating pattern disposed on the first conductive pattern and configured to define a plurality of protrusions protruding in a direction from the display panel toward the data driver; and
a second conductive pattern disposed on the insulating pattern,
wherein protruding portions of the second conductive pattern corresponding to the plurality of protrusions of the insulating pattern are in contact with and electrically connected to the data driver, the data driver defines a plurality of grooves arranged in a surface thereof facing the display panel and spaced apart from each other in a second direction perpendicular to the thickness direction, a length of each of the plurality of grooves in a first direction perpendicular to both the thickness direction and the second direction is smaller than or equal to a length of each of top surfaces of the protruding portions of the second conductive pattern in the first direction, and a length of each of the plurality of grooves in the second direction is smaller than or equal to a length of each of the top surfaces of the protruding portions of the second conductive pattern in the second direction.

18 . The electronic device of claim 17 ,
wherein the data driver incl

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Sujeong

Classifications

• H10W90/732

  between stacked chips · CPC title

• H10W72/354

  comprising polymers · CPC title

• H10W72/352

  comprising metals or metalloids, e.g. solders · CPC title

• H10W72/325

  Die-attach connectors having a filler embedded in a matrix · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title