US-12625585-B2 - Electronic apparatus

US12625585B2US 12625585 B2US12625585 B2US 12625585B2US-12625585-B2

Abstract

An electronic apparatus includes a display module and a digitizer, in which first and second non-folding parts are arranged in a first direction, and a folding part foldable along a folding axis and between the first non-folding part and the second non-folding part are defined. The digitizer includes sensing coils on the first non-folding part and the second non-folding part and connection lines on the folding part and connected to the sensing coils. The folding part includes a central portion overlapping the active area and provided with first holes, and an outer portion overlapping the peripheral area and provided with second holes and third holes. Each of the second holes has a shape different from a shape of each of the first holes, and each of the third holes has a shape different from the shape of each of the first holes and the shape of the second holes.

Inventors

Hyunjae NA
SEOKWON JANG
Hirotsugu Kishimoto
Chul Ho Jeong

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20240112
Priority Date: 20230324

Claims (20)

1 . An electronic apparatus comprising: a display module comprising an active area, on which an image is displayed, and a peripheral area adjacent to the active area; and a digitizer disposed below the display module, wherein a first non-folding part and a second non-folding part, which are arranged in a first direction, and a folding part foldable along a folding axis extending in a second direction crossing the first direction and disposed between the first non-folding part and the second non-folding part are defined in the digitizer, and the digitizer comprises sensing coils disposed in the first non-folding part and the second non-folding part and connection lines disposed in the folding part and connected to the sensing coils, wherein the folding part comprises: a central portion overlapping the active area and provided with first holes defined therethrough; and an outer portion overlapping the peripheral area and provided with second holes defined therethrough and third holes defined therethrough, wherein the second holes and the third holes are alternatively arranged in the first direction, each of the second holes has a shape different from a shape of each of the first holes, and each of the third holes has a shape different from the shape of each of the first holes and the shape of each of the second holes, wherein each of the first holes, the second holes and the third holes is defined completely through the folding part of the digitizer, wherein the connection lines disposed on the outer portion surround a portion of each of the second holes and third holes; wherein the first holes comprise first group holes extending in the second direction and arranged in the second direction, and second group holes alternately arranged with the first group holes, shifted with respect to the first group holes in the second direction, extending in the second direction and arranged in the second direction, and each of the third holes is aligned with a corresponding one of the second group holes in the second direction.
2 . The electronic apparatus of claim 1 , wherein the sensing coils comprises first sensing coils and second sensing coils which are insulated from each other and each of which defines an open loop, and the digitizer further comprises: a base layer which comprises a top surface facing the display module and a bottom surface opposing the top surface and on which the first sensing coils and the second sensing coils are disposed; a first upper base layer disposed on the top surface of the base layer; a second upper base layer disposed on a top surface of the first upper base layer; a first lower base layer disposed on the bottom surface of the base layer; and a second lower base layer disposed on a bottom surface of the first lower base layer.
3 . The electronic apparatus of claim 2 , wherein each of the second holes comprises a first portion aligned with a corresponding one of the first group holes in the second direction and second and third portions spaced apart from each other in the first direction with the corresponding one of the first group holes therebetween and connected to the first portion, and each of the third holes is arranged on an edge of the outer portion in the first direction to define an opened opening.
4 . The electronic apparatus of claim 3 , wherein the connection lines comprise: first upper lines disposed on the base layer; second upper lines disposed on the first upper base layer; first lower lines disposed below the base layer; and second lower lines disposed below the first lower base layer, wherein four coils are disposed between a second hole and a third hole, which are spaced apart from each other in the first direction, among the connection lines crossing the outer portion.
5 . The electronic apparatus of claim 4 , wherein the first upper lines and the first lower lines have shapes corresponding to each other in a plan view.
6 . The electronic apparatus of claim 4 , wherein the second upper lines comprises: a first line comprising a first first portion which surrounds ‘a’ first portions adjacent to a boundary between the second non-folding part and the folding part and a first second portion connected to the first first portion and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; a second line comprising a second first portion which surrounds ‘b’ first portions adjacent to the boundary between the second non-folding part and the folding part and a second second portion connected to the second first portion, spaced apart from the first second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; a third line comprising a third first portion which surrounds ‘c’ first portions adjacent to the boundary between the second non-folding part and the folding part and a third second portion connected to the third first portion, spaced apart from the second second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and a fourth line comprising a fourth first portion which surrounds ‘d’ first portions adjacent to the boundary between the second non-folding part and the folding part and a fourth second portion connected to the fourth first portion, spaced apart from the third second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction, wherein ‘a’, ‘b’, ‘c’, and ‘d’ are natural numbers, ‘a’ is less than ‘b’, ‘b’ is less than ‘c’, and ‘c’ is less than ‘d’.
7 . The electronic apparatus of claim 6 , wherein the second lower lines comprises: a fifth line comprising a fifth first portion which surrounds ‘e’ first portions adjacent to a boundary between the first non-folding part and the folding part and a fifth second portion connected to the fifth first portion and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; a sixth line comprising a sixth first portion which surrounds ‘f’ first portions adjacent to the boundary between the first non-folding part and the folding part and a sixth second portion connected to the sixth first portion, spaced apart from the fifth second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; a seventh line comprising a seventh first portion which surrounds ‘g’ first portions adjacent to the boundary between the first non-folding part and the folding part and a seventh second portion connected to the seventh first portion, spaced apart from the sixth second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and an eighth line comprising an eighth first portion which surrounds ‘h’ first portions adjacent to the boundary between the first non-folding part and the folding part and an eighth second portion connected to the eighth first portion, spaced apart from the seventh second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction, wherein ‘e’, ‘f’, ‘g’, and ‘h’ are natural numbers, ‘e’ is less than ‘f’, ‘f’ is less than ‘g’, and ‘g’ is less than ‘h’.
8 . The electronic apparatus of claim 7 , wherein, in a plan view, the first second portion, the second second portion, the third second portion, and the fourth second portion of the second upper lines are alternately arranged with the fifth second portion, the sixth second portion, the seventh second portion, and the eighth second portion of the second lower lines in the first direction.
9 . The electronic apparatus of claim 3 , wherein a pitch of a second hole and a third hole, which are adjacent to each other in the first direction, is greater than or equal to about 1.5 mm and less than or equal to about 2 mm, a distance between adjacent first portions of the first portions, which are aligned with the third hole in the second direction, in the first direction is greater than or equal to about 0.5 mm and less than or equal to about 0.7 mm, a width of the first portion in the first direction is greater than or equal to about 0.4 mm and less than or equal to about 0.6 mm, and a width of the third hole in the second direction is greater than or equal to about 2 mm and less than or equal to about 3 mm.
10 . The electronic apparatus of claim 3 , wherein a line width of each of the connection lines is greater than or equal to about 0.02 mm and less than or equal to about 0.05 mm, and a distance between adjacent connection lines among the connection lines is greater than or equal to about 0.02 mm and less than or equal to about 0.05 mm.
11 . The electronic apparatus of claim 3 , wherein a width of the outer portion in the second direction is greater than or equal to about 2 mm and less than or equal to about 5 mm.
12 . The electronic apparatus of claim 2 , wherein each of the second holes are aligned with the first group holes in the second direction and arranged on an edge of the outer portion to define an opened opening, each of the third holes are alternately arranged with the second holes in the first direction, and a portion of each of the first group holes aligned with the second holes in the second direction is disposed on the outer portion.
13 . The electronic apparatus of claim 12 , wherein the connection lines comprise: first upper lines disposed on the base layer; second upper lines disposed on the first upper base layer; first lower lines disposed below the base layer; and second lower lines disposed below the first lower base layer, wherein each of the first upper lines, the second upper lines, the first lower lines, and the second lower lines comprises: lower connection lines which surrounds an upper end of each of the first holes and a lower end of each of the third holes, which are disposed on the outer portion, among the first holes; and upper connection lines which crosses the upper end of each of the second holes and the third holes.
14 . The electronic apparatus of claim 13 , wherein the second upper lines and the second lower lines have shapes corresponding to each other in a plan view.
15 . The electronic apparatus of claim 13 , wherein the lower connection lines of the first upper lines comprise: a first lower line comprising a first first portion which surrounds the lower end of each of ‘a’ third holes adjacent to a boundary between the second non-folding part and the folding part and a first second portion connected to the first first portion and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and a second lower line comprising a second first portion which surrounds the lower end of each of ‘b’ third holes adjacent to the boundary between the second non-folding part and the folding part and a second second portion connected to the second first portion, spaced apart from the first second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction, wherein ‘a’ and ‘b’ are natural numbers, and ‘a’ is less than ‘b’.
16 . The electronic apparatus of claim 15 , wherein the upper connection lines of the first upper lines comprise: a first upper line comprising a third first portion which surrounds the upper end of each of the ‘a’ third holes adjacent to the boundary between the second non-folding part and the folding part and a third second portion connected to the third first portion, spaced apart from the second second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and a second upper line comprising a fourth first portion which surrounds the upper end of each of the ‘b’ third holes adjacent to the boundary between the second non-folding part and the folding part and a fourth second portion connected to the fourth first portion, spaced apart from the third second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction.
17 . The electronic apparatus of claim 15 , wherein the lower connection lines of the first upper lines comprise: a third lower line comprising a third first portion which surrounds the upper end of each of ‘c’ third holes adjacent to a boundary between the first non-folding part and the folding part and a third second portion connected to the third first portion and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and a fourth lower line comprising a fourth first portion which surrounds the upper end of each of ‘d’ third holes adjacent to the boundary between the first non-folding part and the folding part and a fourth second portion connected to the fourth first portion, spaced apart from the third second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction, wherein ‘c’ and ‘d’ are natural numbers, and ‘c’ is less than ‘d’.
18 . The electronic apparatus of claim 17 , wherein the upper connection lines of the first lower lines comprise: a third upper line comprising a fifth first portion which surrounds the lower end of each of ‘c’ third holes adjacent to the boundary between the first non-folding part and the folding part and a fifth second portion connected to the fifth first portion, spaced apart from the fourth second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction; and a fourth upper line comprising a sixth first portion which surrounds the upper end of each of ‘d’ third holes adjacent to the boundary between the first non-folding part and the folding part and a sixth second portion connected to the sixth first portion, spaced apart from the fifth second portion in the first direction, and disposed between the first group hole and the second group hole, which are adjacent to each other in the first direction.
19 . The electronic apparatus of claim 12 , wherein a pitch of the third holes in the first direction is greater than or equal to about 0.6 mm and less than or equal to about 1.0 mm, a width of each of the third holes in the first direction is greater than or equal to about 0.1 mm and less than or equal to about 0.2 mm, and a width of each of the third holes in the second direction is greater than or equal to about 1.6 mm and less than or equal to about 2.5 mm.
20 . The electronic apparatus of claim 12 , wherein a distance between the first group hole and the third group hole, which are disposed on the outer portion in the first direction, is greater than or equal to about 0.15 mm and less than or equal to about 0.3 mm, and a distance between the first group hole and the second group hole, which are disposed on the outer portion in the second direction, is greater than or equal to about 0.3 mm and less than or equal to about 0.5 mm.

Description

This application claims priority to Korean Patent Application No. 10-2023-0038348, filed on Mar. 24, 2023, and all the benefits accruing therefrom under 35 U.S.C. § 119, the content of which in its entirety is herein incorporated by reference. BACKGROUND 1. Field The present disclosure herein relates to an electronic apparatus including a digitizer, and more particularly, to an electronic apparatus including a digitizer having improved sensing performance in a folding part. 2. Description of the Related Art In the information society, electronic apparatuses are becoming increasingly important as a medium for delivering visual information. Such an electronic apparatus may receive an electrical signal to be activated. The electronic apparatus may include a digitizer that senses an input applied from the outside of a display layer displaying an image. The digitizer may include various sensing coils to be activated by an electrical signal. An area, on which the sensing coils are activated, may respond to a signal applied from the outside. SUMMARY The disclosure provides an electronic apparatus including a digitizer having improved sensing performance in the folding part. An embodiment of the invention provides an electronic apparatus including: a display module including an active area, on which an image is displayed, and a peripheral area adjacent to the active area; and a digitizer disposed below the display module, where a first non-folding part and a second non-folding part, which are arranged in a first direction, and a folding part foldable along a folding axis extending in a second direction crossing the first direction and disposed between the first non-folding part and the second non-folding part are defined in the digitizer, and the digitizer includes sensing coils disposed in the first non-folding part and the second non-folding part and connection lines disposed in the folding part and connected to the sensing coils, where the folding part includes: a central portion overlapping the active area and provided with first holes defined therethrough; and an outer portion overlapping the peripheral area and provided with second holes defined therethrough and third holes defined therethrough, where each of the second holes has a shape different from a shape of each of the first holes, and each of the third holes has a shape different from the shape of each of the first holes and the shape of the second holes. In an embodiment, the sensing coils may include first sensing coils and second sensing coils which are insulated from each other and each of which defines an open loop, and the digitizer may further include: a base layer which includes a top surface facing the display module and a bottom surface opposing the top surface and on which the first sensing coils and the second sensing coils are disposed: a first upper base layer disposed on the top surface of the base layer: a second upper base layer disposed on a top surface of the first upper base layer: a first lower base layer disposed on the bottom surface of the base layer; and a second lower base layer disposed on a bottom surface of the first lower base layer. In an embodiment, the first holes may include first group holes extending in the second direction and arranged in the second direction, and second group holes alternately arranged with the first group holes, shifted with respect to the first group holes in the second direction, extending in the second direction, and arranged in the second direction, each of the second holes may include a first portion aligned with a corresponding one of the first group holes in the second direction and second and third portions spaced apart from each other in the first direction with the corresponding one of the first group holes therebetween and connected to the first portion, and each of the third holes may be aligned with a corresponding one of the second group holes in the second direction and arranged on an edge of the outer portion in the first direction to define an opened opening. In an embodiment, the connection lines may include: first upper lines disposed on the base layer: second upper lines disposed on the first upper base layer; first lower lines disposed below the base layer; and second lower lines disposed below the first lower base layer, where four coils may be disposed between a second hole and a third hole, which are spaced apart from each other in the first direction, among the connection lines crossing the outer portion. In an embodiment, the first upper lines and the first lower lines may have shapes corresponding to each other in a plan view. In an embodiment, the second upper lines may include: a first line including a first portion which surround ‘a’ first portions adjacent to a boundary between the second non-folding part and the folding part and a first second portion connected to the first portion and disposed between the first group hole and the second group hole, which are adjace