CN-122003654-A - Electronic device

Abstract

The electronic device of the present invention includes a display module, and a digitizer disposed below the display module and including a folding portion folded about a folding axis extending in a first direction and first and second non-folding portions spaced apart from each other with the folding portion therebetween in a second direction crossing the first direction. The digitizer includes a plurality of sensing coils, different sensing coils among the plurality of sensing coils are shared by common lines, and the common lines are disposed at least in the folded portion.

Inventors

• Luo Xuanzai
• LI YONGZHEN
• ZHANG SHUOYUAN
• ZHAO XIANXING

Assignees

• 三星显示有限公司

Dates

Publication Date

20260508

Application Date

20241213

Priority Date

20231215

Claims (20)

1. 1. An electronic device, comprising: A display module including an effective area for providing an image and a peripheral area adjacent to the effective area, and A digitizer disposed under the display module, the digitizer including a folding portion folded about a folding axis extending in a first direction and first and second non-folding portions spaced apart from each other in a second direction crossing the first direction with the folding portion therebetween, Wherein the digitizer includes a plurality of sensing coils, and different sensing coils among the plurality of sensing coils are shared by common lines provided at least in the folded portion.
2. 2. The electronic device of claim 1, wherein the common line extends in the second direction.
3. 3. The electronic device of claim 1, wherein when one of the different sensing coils shared through the common line is driven to sense, the remaining different sensing coils shared through the common line are driven to float.
4. 4. The electronic device of claim 1, wherein the plurality of sensing coils comprises: a first sensing coil arranged in the first direction, each of the first sensing coils configured to extend in the second direction, and A second sensing coil arranged in the second direction, each of the second sensing coils configured to extend in the first direction, wherein the second sensing coil includes an unfolded coil disposed in the first unfolded portion or the second unfolded portion and a folded coil disposed at least partially in the folded portion, and Wherein the first and second sensing coils are insulated from each other and each of the first and second sensing coils form an open loop.
5. 5. The electronic device of claim 4, wherein the common line is shared by two folded coils.
6. 6. The electronic device of claim 4, wherein the common line is shared by two folded coils and one first sensing coil.
7. 7. The electronic device of claim 4, wherein the common line is shared by two first sense coils.
8. 8. The electronic device of claim 4, wherein the common line is shared by one folding coil and two first sensing coils.
9. 9. The electronic device of claim 4, wherein each of the first sensing coils includes a first extension line configured to extend in the second direction and a first connection line connected to the first extension line and configured to extend in the first direction, and Wherein each of the first extension lines extends from the first unfolded portion to the second unfolded portion via the folded portion.
10. 10. The electronic device of claim 9, wherein each of the non-folded coils includes a second extension line configured to extend in the first direction and a second connection line connected to the second extension line and configured to extend in the second direction, and Wherein each of the folded coils includes a third extension line configured to extend in the first direction and a third connection line connected to the third extension line and configured to extend in the second direction, and each of the third connection lines is provided at least in the folded portion.
11. 11. The electronic device of claim 10, wherein the folding coil comprises a first folding coil, a second folding coil, and a third folding coil, the common line is provided as a plurality of common lines, and the plurality of common lines comprises a first common line and a second common line, Wherein the first common line is shared by a third connection line of the first folded coil and a third connection line of the second folded coil, and Wherein the second common line is shared by another third connection line of the second folded coil and one third connection line of the third folded coil.
12. 12. The electronic device according to claim 11, wherein the digitizer includes a base layer, and the third extension lines provided in the folded portion are connected to the corresponding third connection lines through contact holes formed through the base layer.
13. 13. The electronic device of claim 12, wherein the contact hole is defined in the folded portion, and Wherein the third extension line provided in the folded portion extends in the first direction in the folded portion.
14. 14. The electronic device of claim 12, wherein the contact hole is defined in the first or second non-folded portion, and Wherein each of the third extension lines provided in the folded portion includes an extension section configured to extend in the first direction in the folded portion and a connection portion configured to connect the extension section with a corresponding contact hole.
15. 15. The electronic device according to claim 12, wherein the folded portion includes an inner side portion and an upper outer side portion and a lower outer side portion spaced apart from each other in the first direction with the inner side portion therebetween, and up to four lines are provided in the same layer in each of the upper outer side portion and the lower outer side portion, and Wherein the first common line is disposed at least in the upper outer portion, and the second common line is disposed at least in the lower outer portion.
16. 16. The electronic device of claim 15, wherein at least one of the two first extension lines of the first-first sensing coil and the two first extension lines of the second-first sensing coil spans the upper outer portion, and Wherein at least one of the two first extension lines of the n-1 th-first sensing coil and the two first extension lines of the n-first sensing coil spans the lower outer side portion, and n is a natural number greater than or equal to 4.
17. 17. The electronic device of claim 11, wherein the first common line is additionally shared by one first extension line of the first-first sensing coil, and Wherein the second common line is additionally shared by one first extension line of the n-1 th-first sensing coil, and n is a natural number greater than or equal to 4.
18. 18. The electronic device of claim 10, wherein each of the first sensing coils and each of the folding coils form an open loop wound two turns, Wherein the first extension line of each of the first sensing coils includes a first-first extension line, a first-second extension line, a first-third extension line, and a first-fourth extension line, and the first connection line of each of the first sensing coils includes a first-first connection line, a first-second connection line, a first-third connection line, and a first-fourth connection line, and Wherein the third extension line of each of the folding coils includes a third-first extension line, a third-second extension line, a third-third extension line, and a third-fourth extension line, and the third connection line of each of the folding coils includes a third-first connection line, a third-second connection line, a third-third connection line, and a third-fourth connection line.
19. 19. The electronic device of claim 18, wherein the folded coil comprises a first folded coil, a second folded coil, and a third folded coil arranged in the second direction, and Wherein the common line is shared by the third-first connection line of the first folding coil, the third-first connection line of the second folding coil, and the first-second extension line of the first-first sensing coil.
20. 20. The electronic device of claim 19, wherein the digitizer comprises: A first substrate layer; a second substrate layer disposed below the first substrate layer; A first cover layer disposed on the first substrate layer; a second cover layer disposed below the second substrate layer; a first conductive layer disposed between the first base layer and the first cover layer; a second conductive layer disposed between the first and second substrate layers, and A third conductive layer disposed between the second base layer and the second cover layer, and Wherein the folded portion includes an inner portion and an outer portion spaced apart from the inner portion in the first direction, and up to four lines are provided in the same layer in the outer portion.

Description

Electronic device Technical Field Embodiments of the present disclosure described herein relate to an electronic device, and more particularly, to an electronic device including a digitizer. Background In the information society, importance of electronic devices as a visual information transmission medium is increasing. The electronic device is activated by an electrical signal applied to the electronic device. Each of the electronic devices includes a digitizer that senses an input applied from outside of a display layer where an image is displayed. The digitizer of the electronic device may include various sensing coils to be activated by an electrical signal. The region in which the sense coil is activated is responsive to a signal applied from the outside. Disclosure of Invention [ Technical problem ] Embodiments of the present disclosure provide an electronic device with improved folding characteristics of a digitizer and improved sensing sensitivity in a folding zone. Technical scheme According to an embodiment, an electronic device includes a display module including an effective area providing an image and a peripheral area adjacent to the effective area, and a digitizer disposed under the display module and including a folded portion folded about a folding axis extending in a first direction and first and second non-folded portions spaced apart from each other with the folded portion therebetween in a second direction crossing the first direction. The digitizer includes a plurality of sensing coils, and different sensing coils among the plurality of sensing coils are shared by common lines provided at least in the folded portion. The common line may extend in the second direction. When one of the different sensing coils shared through the common line is driven to sense, the remaining portion of the different sensing coils shared through the common line may be driven to float. The plurality of sensing coils may include a first sensing coil arranged in a first direction and each extending in a second direction, and a second sensing coil arranged in the second direction and each extending in the first direction. The second sensing coil may include an unfolded coil disposed in the first unfolded portion or the second unfolded portion and a folded coil disposed at least partially in the folded portion. The first and second sensing coils may be insulated from each other, and each of the first and second sensing coils may form an open loop. The common line may be shared by two folded coils. The common line may be shared by two folded coils and one first sensing coil. The common line may be shared by the two first sensing coils. The common line may be shared by one folding coil and two first sensing coils. Each of the first sensing coils may include a first extension line extending in the second direction and a first connection line connected to the first extension line and extending in the first direction, and each of the first extension lines may extend from the first non-folded portion to the second non-folded portion via the folded portion. Each of the non-folded coils may include a second extension line extending in the first direction and a second connection line connected to the second extension line and extending in the second direction. Each of the folded coils may include a third extension line extending in the first direction and a third connection line connected to the third extension line and extending in the second direction, and each of the third connection lines may be provided at least in the folded portion. The folded coil may include a first folded coil, a second folded coil, and a third folded coil. The common line may include a plurality of common lines, and the plurality of common lines may include a first common line and a second common line. The first common line may be shared by one third connection line of the first folded coil and one third connection line of the second folded coil. The second common line may be shared by another third connection line of the second folded coil and one third connection line of the third folded coil. The digitizer may include at least one base layer, and the third extension lines provided in the folded portion may be connected to the corresponding third connection lines through contact holes formed through the base layer. The contact hole may be defined in the folded portion, and a third extension line provided in the folded portion may extend in the first direction in the folded portion. The contact hole may be defined in the first non-folded portion or the second non-folded portion, and each of the third extension lines provided in the folded portion may include an extension section extending in the first direction in the folded portion and a connection portion connecting the extension section with the corresponding contact hole. The folded portion may include an upper outer portion and a lower outer portion spaced apart from each other in the fi