CN-114078373-B - Release film

Abstract

A release film is disclosed comprising a first release film on a support having a first aperture defined therein and a second release film below the support, wherein, when viewed in plan, a first cut region is defined by a first portion of the second release film that overlaps the first aperture.

Inventors

• Jiang Gaosheng
• Jin Minxie
• Nan Haosheng
• XIAN WENZHI

Assignees

• 三星显示有限公司

Dates

Publication Date

20260512

Application Date

20210728

Priority Date

20200814

Claims (16)

1. 1. A release film comprising: a first release film on a support, the support having a first aperture defined therein; A second release film below the support, and A third release film, under the support, Wherein, when viewed in plan, a first cut region is defined by a first portion of the second release film, the first portion overlapping the first aperture, and Wherein the third release film and the second release film are arranged in a second direction, a side portion of the third release film and a side portion of the second release film are adjacent to each other in the second direction, and the third release film does not overlap the second release film in the plan view.
2. 2. The release film of claim 1, wherein the first cutting zone comprises: a first sub-cutting area extending in a first direction, and A second sub-cutting area extending in the second direction crossing the first direction, Wherein the second sub-cutting zone intersects the first sub-cutting zone.
3. 3. The release film of claim 1, wherein a second aperture is defined by the support, and Wherein a second cut region is defined by a second portion of the second release film, the second portion overlapping the second aperture.
4. 4. A release film according to claim 3, wherein the second cutting zone comprises: a third sub-cutting area extending in the first direction, and A fourth sub-cutting area extending in the second direction crossing the first direction, Wherein the fourth sub-cutting zone intersects the third sub-cutting zone.
5. 5. A release film according to claim 3, wherein the second release film comprises: A first ion release film below the support, and A second ion release film, below the first ion release film, and The first cut region is defined by the first and second ion release films.
6. 6. The release film of claim 5, further comprising a light shielding layer on one surface of the second ionic release film.
7. 7. The release film of claim 6, wherein the second cut region is defined by the light blocking layer and the second ionic release film.
8. 8. The release film of claim 6, wherein the light blocking layer is on a top surface of the second ionic release film.
9. 9. The release film of claim 8, wherein the light shielding layer is in a sub-aperture defined by a portion of the first ionic release film that overlaps the second aperture.
10. 10. The release film of claim 6, wherein the light shielding layer is on a bottom surface of the second ion release film.
11. 11. The release film of claim 6, wherein the light blocking layer is directly on a bottom surface of the second ionic release film.
12. 12. The release film of claim 5, wherein the first cut region has a width and opens from the first portion of the first release film to an edge of the first release film, and the edge of the first release film is adjacent to the first portion.
13. 13. The release film of claim 5, wherein the second cut region has a width and opens from the second portion of the first release film to an edge of the first release film, and the edge of the first release film is adjacent to the second portion.
14. 14. A release film according to claim 3, wherein the support comprises: A first plate; A cover layer under the first plate; a second plate under the cover layer; A buffer layer under the second plate; An insulating layer under the buffer layer; A step compensation layer under the first plate, and A boundary adhesive layer, under the step compensation layer, Wherein the second release film is below the insulating layer and the boundary adhesion layer.
15. 15. The release film of claim 14, wherein the first and second apertures are defined by the boundary adhesive layer, the step compensation layer, and the first plate.
16. 16. The release film of claim 14, wherein the third release film is below the first plate and adjacent to a first edge of each of the cover layer, the second plate, the buffer layer, and the insulating layer, and Wherein the step compensation layer and the boundary adhesion layer are adjacent to a second edge of each of the cover layer, the second plate, the buffer layer, and the insulating layer.

Description

Release film Cross Reference to Related Applications The present application claims priority and rights of korean patent application No. 10-2020-0102518, filed on 8.14.2020, to the korean intellectual property office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field The present disclosure relates to a release film. Background In general, a display device includes a display module displaying an image and a support supporting the display module. The display module includes a display panel, a window that rests on the display panel and protects the display panel from external scratches and impacts, and a cover layer that is positioned below the display panel and protects the display panel from external impacts. The support member has rigidity greater than that of the display module and supports the display module. The support member includes a metal-containing support plate. Display devices including flexible display modules have recently been developed as their technology advances. Among the flexible display modules, a display module foldable about its folding axis has a support on its lower side, which has a structure folded together with the display module. Disclosure of Invention Some embodiments of the present disclosure provide a release film that protects a support and allows for an appropriate process of manufacturing a display device. According to some embodiments of the present disclosure, the release film may include a first release film on a support having a first aperture defined therein and a second release film below the support, wherein the first cut region is defined by a first portion of the second release film, the first portion overlapping the first aperture, when viewed in plan. The first cutting region may include a first sub-cutting region extending in a first direction, and a second sub-cutting region extending in a second direction crossing the first direction. The second sub-cutting zone may intersect the first sub-cutting zone. The second aperture may be defined by the support, wherein the second cut region is defined by a second portion of the second release film, the second portion overlapping the second aperture. The second cutting region may include a third sub-cutting region extending in the first direction, and a fourth sub-cutting region extending in a second direction crossing the first direction. The fourth sub-cutting zone may intersect the third sub-cutting zone. The second release film may include a first ion release film below the support and a second ion release film below the first ion release film. The first cutting region may be defined by a first ion-releasing film and a second ion-releasing film. The release film may further include a light shielding layer on one surface of the second ion release film. The second cutting region may be defined by the light shielding layer and the second ion release film. The light shielding layer may be on a top surface of the second ion release film. The light shielding layer may be in a sub-aperture defined by a portion of the first ion release film overlapping the second aperture. The light shielding layer may be on a bottom surface of the second ion release film. The light shielding layer may be directly on the bottom surface of the second ion release film. The first cutting region may have a width and be open from a first portion of the first ion release film to an edge of the first ion release film, and the edge of the first ion release film is adjacent to the first portion. The second cut region may have a width and open from a second portion of the first ionic release film to an edge of the first ionic release film, and the edge of the first ionic release film is adjacent to the second portion. The release film may further include a third release film under the support, adjacent to the second release film, and not overlapping the second release film in a plan view. The support may include a first plate, a cover layer under the first plate, a second plate under the cover layer, a buffer layer under the second plate, an insulating layer under the buffer layer, a step compensation layer under the first plate, and a boundary adhesive layer under the step compensation layer, wherein the second release film is under the insulating layer and the boundary adhesive layer. The first and second holes may be defined by the boundary adhesive layer, the step compensation layer, and the first plate. The third release film may be under the first plate and adjacent to a first edge of each of the cover layer, the second plate, the buffer layer, and the insulating layer, wherein the step compensation layer and the boundary adhesive layer are adjacent to a second edge of each of the cover layer, the second plate, the buffer layer, and the insulating layer. According to some embodiments of the present disclosure, the release film may include a first release film on a support having a first hole and a se