US 11,894,294 B2Granted

Display apparatus including a display panel with multiple pads

AssigneeSamsung Display Co., Ltd.

InventorsHanho Park, Jeongeun Park, Soyeon Joo

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Abstract

A display apparatus includes a printed circuit board including first to fourth output pad regions and a flexible circuit board having a first end connected to a display panel and a second end connected to the printed circuit board. The first output pad region includes a 1st-1st output pad group and a 1st-2nd output pad group, the second output pad region includes a 2nd-1st output pad group and a 2nd-2nd output pad group, the fourth output pad region includes a 4th-1st output pad group and a 4th-2nd output pad group, and the printed circuit board includes a first input terminal electrically connected to the 1st-1st output pad group, a second input terminal electrically connected to the 2nd-2nd output pad group, a third input terminal electrically connected to the first input terminal, and a fourth input terminal electrically connected to the 4th-2nd output pad group.

Claims22

Dependent claims

A display apparatus, comprising:

a display panel including a first input pad region, a second input pad region, a third input pad region, and a fourth input pad region;
a printed circuit board including a first output pad region, a second output pad region, a third output pad region, and a fourth output pad region;
and
a flexible circuit board including a first end connected to the display panel and a second end connected to the printed circuit board,
wherein the first output pad region includes a 1st-1st output pad group and a 1st-2nd output pad group, each of the 1st-1st output pad group and the 1st-2nd output pad group including a plurality of test pads, wherein one test pad of the 1st-1st output pad group is connected to one test pad of the 1st-2nd output pad group,
wherein the second output pad region includes a 2nd-1st output pad group and a 2nd-2nd output pad group, each of the 2nd-1st output pad group and the 2nd-2nd output pad group including a plurality of test pads, wherein one test pad of the 2nd-1st output pad group is connected to one test pad of the 2nd-2nd output pad group,
wherein the third output pad region includes a 3rd-1st output pad group and a 3rd-2nd output pad group, each of the 3rd-1st output pad group and the 3rd-2nd output pad group including a plurality of test pads, wherein one test pad of the 3rd-1st output pad group is connected to one test pad of the 3rd-2nd output pad group,
wherein the fourth output pad region includes a 4th-1st output pad group and a 4th-2nd output pad group, each of the 4th-1st output pad group and the 4th-2nd output pad group including a plurality of test pads, wherein a test pad of the 4th-1st output pad group is connected to a test pad of the 4th-2nd output pad group, and
wherein the printed circuit board comprises:
a first input terminal electrically connected to the 1st-1st output pad group;
a second input terminal electrically connected to the 2nd-2nd output pad group;
a third input terminal electrically connected to the first input terminal;
and
a fourth input terminal electrically connected to the 4th-2nd output pad group.

11 more elements

A display apparatus, comprising:

a display panel including a first input pad region, a second input pad region, a third input pad region, and a fourth input pad region;
a printed circuit board including a first output pad region, a second output pad region, a third output pad region, and a fourth output pad region;
and
a flexible circuit board having a first end connected to the display panel and a second end connected to the printed circuit board,
wherein the first output pad region includes a 1st-1st output pad group and a 1st-2nd output pad group, each of the 1st-1st output pad group and the 1st-2nd output pad group including a plurality of test pads, wherein one test pad of the 1st-1st output pad group is connected to one test pad of the 1st-2nd output pad group,
wherein the second output pad region includes a 2nd-1st output pad group and a 2nd-2nd output pad group, each of the 2nd-1st output pad group and the 2nd-2nd output pad group including a plurality of test pads, wherein one test pad of the 2nd-1st output pad group is connected to one test pad of the 2nd-2nd output pad group,
wherein the third output pad region includes a 3rd-1st output pad group and a 3rd-2nd output pad group, each of the 3rd-1st output pad group and the 3rd-2nd output pad group including a plurality of test pads, wherein one test pad of the 3rd-1st output pad group is connected to one test pad of the 3rd-2nd output pad group,
wherein the fourth output pad region includes a 4th-1st output pad group and a 4th-2nd output pad group each including a plurality of test pads, wherein one test pad of the 4th-1st output pad group is connected to one test pad of the 4th-2nd output pad group, and
wherein the printed circuit board comprises:
a first input terminal and a second input terminal electrically connected to the 1st-1st output pad group;
a third input terminal electrically connected to the first input terminal;
and
a fourth input terminal electrically connected to the 3rd-1st output pad group.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/804,271Filed 26 May 2022
Priority: KR 10-2021-01311341 Oct 2021
Published: US 2023/0104777 A16 Apr 2023
Granted: 6 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification22 codes

H10W 70/65
Characterised by their interconnections: shapes or dispositions of interconnections
H05K 1/0268
Marks, test patterns or identification means: for electrical inspection or testing
H05K 1/118
Printed elements for providing electric connections to or between printed circuits: specially for flexible printed circuits, e.g. using folded…
H05K 1/14
Details: structural association of two or more printed circuits