US-12622291-B2 - Flexible display module and electronic device

Abstract

A flexible display module and an electronic device are provided. The flexible display module includes a flexible substrate and a plurality of pixel units. The flexible substrate has a folding region that is provided with a first gap. The first gap extends from a first side surface to a second side surface in a thickness direction of the flexible substrate. A first preset distance is reserved between one end of the first gap and the second side surface of the flexible substrate. The first gap penetrates through the flexible substrate along a lengthwise direction or a width direction of the flexible substrate. A plurality of pixel units are distributed on the first side surface of the flexible substrate at intervals. The pixel units adjacent to the first gap are spaced apart from the first gap.

Inventors

• Huafei XIE

Assignees

• VIVO MOBILE COMMUNICATION CO., LTD.

Dates

Publication Date

20260505

Application Date

20230808

Priority Date

20210209

Claims (18)

1. 1 . A flexible display module, comprising: a flexible substrate, wherein the flexible substrate has a folding region, the folding region is provided with a first gap, the first gap extends from a first side surface to a second side surface in a thickness direction of the flexible substrate, a first preset distance is reserved between one end of the first gap and the second side surface of the flexible substrate, the first gap penetrates through the flexible substrate along a lengthwise direction or a width direction of the flexible substrate; a plurality of pixel units, wherein the plurality of pixel units are distributed in the folding region on the first side surface of the flexible substrate at intervals, and the pixel units adjacent to the first gap are spaced apart from the first gap; and a plurality of pixel drive units on the first side surface of the flexible substrate, wherein each of the pixel drive units is adjacent and electrically connected to a respective pixel unit, and the pixel drive units adjacent to the first gap are spaced apart from the first gap.
2. 2 . The flexible display module according to claim 1 , wherein the flexible substrate further comprises a routing layer in the lengthwise direction or the width direction of the flexible substrate; the routing layer comprises a first routing section and a second routing section; the first routing section and the second routing section are at least partially located in the first gap; and one end of the first routing section located in the first gap is movably connected to one end of the second routing section located in the first gap.
3. 3 . The flexible display module according to claim 2 , wherein the first routing section and the second routing section are of coated structures; and both the first routing section and the second routing section are coated on side walls of the first gap.
4. 4 . The flexible display module according to claim 1 , further comprising a plurality of separation columns, wherein the separation columns are arranged on the first side surface; at least one separation column is arranged between two adjacent pixel units; and the first gap is located between the separation columns and the pixel units.
5. 5 . The flexible display module according to claim 1 , further comprising a plurality of separation columns, wherein the separation columns are arranged on the first side surface, at least one separation column is arranged between two adjacent pixel units, the separation column is provided with a second gap, the second gap penetrates through the separation column, and the second gap is opposite to the first gap.
6. 6 . The flexible display module according to claim 1 , further comprising a pixel drive layer, wherein the pixel drive layer is arranged between the pixel units and the flexible substrate, the plurality of pixel units are all electrically connected to the pixel drive layer, the pixel drive layer is provided with a third gap, the third gap penetrates through the pixel drive layer; and the third gap is opposite to the first gap.
7. 7 . The flexible display module according to claim 6 , comprising a first encapsulation layer and a plurality of second encapsulation layers, wherein the first encapsulation layer is located between the pixel units and the pixel drive layer; the first encapsulation layer is used for encapsulating the pixel drive layer; the first encapsulation layer is provided with a fourth gap; the fourth gap penetrates through the first encapsulation layer; the fourth gap is opposite to the third gap; each of the second encapsulation layers encapsulates one pixel unit; and each of the first gaps is located between two adjacent second encapsulation layers.
8. 8 . The flexible display module according to claim 1 , wherein the first gap comprises a first side wall and a second side wall opposite to each other; and one side of the first side wall away from each of the pixel units and one side of the second side wall away from each of the pixel units are intersected.
9. 9 . The flexible display module according to claim 1 , wherein the first gap comprises a third side wall, a fourth side wall, and a fifth side wall; the third side wall and the fifth side wall are opposite to each other; and the fourth side wall is arranged between the third side wall and the fifth side wall and is connected to the third side wall and the fifth side wall.
10. 10 . An electronic device, comprising a flexible display module, wherein the flexible display module comprises: a flexible substrate, wherein the flexible substrate has a folding region, the folding region is provided with a first gap, the first gap extends from a first side surface to a second side surface in a thickness direction of the flexible substrate, a first preset distance is reserved between one end of the first gap and the second side surface of the flexible substrate, the first gap penetrates through the flexible substrate along a lengthwise direction or a width direction of the flexible substrate; a plurality of pixel units, wherein the plurality of pixel units are distributed in the folding region on the first side surface of the flexible substrate at intervals, and the pixel units adjacent to the first gap are spaced apart from the first gap; and a plurality of pixel drive units on the first side surface of the flexible substrate, wherein each of the pixel drive units is adjacent and electrically connected to a respective pixel unit, and the pixel drive units adjacent to the first gap are spaced apart from the first gap.
11. 11 . The electronic device according to claim 10 , wherein the flexible substrate further comprises a routing layer in the lengthwise direction or the width direction of the flexible substrate, the routing layer comprises a first routing section and a second routing section, the first routing section and the second routing section are at least partially located in the first gap, and one end of the first routing section located in the first gap is movably connected to one end of the second routing section located in the first gap.
12. 12 . The electronic device according to claim 11 , wherein the first routing section and the second routing section are of coated structures, and both the first routing section and the second routing section are coated on side walls of the first gap.
13. 13 . The electronic device according to claim 10 , further comprising a plurality of separation columns, wherein the separation columns are arranged on the first side surface, at least one separation column is arranged between two adjacent pixel units, and the first gap is located between the separation columns and the pixel units.
14. 14 . The electronic device according to claim 10 , further comprising a plurality of separation columns, wherein the separation columns are arranged on the first side surface, at least one separation column is arranged between two adjacent pixel units, the separation column is provided with a second gap, the second gap penetrates through the separation column, and the second gap is opposite to the first gap.
15. 15 . The electronic device according to claim 10 , further comprising a pixel drive layer, wherein the pixel drive layer is arranged between the pixel units and the flexible substrate, the plurality of pixel units are all electrically connected to the pixel drive layer, the pixel drive layer is provided with a third gap, the third gap penetrates through the pixel drive layer; and the third gap is opposite to the first gap.
16. 16 . The electronic device according to claim 15 , comprising a first encapsulation layer and a plurality of second encapsulation layers, wherein the first encapsulation layer is located between the pixel units and the pixel drive layer; the first encapsulation layer is used for encapsulating the pixel drive layer; the first encapsulation layer is provided with a fourth gap; the fourth gap penetrates through the first encapsulation layer; the fourth gap is opposite to the third gap; each of the second encapsulation layers encapsulates one pixel unit; and each of the first gaps is located between two adjacent second encapsulation layers.
17. 17 . The electronic device according to claim 10 , wherein the first gap comprises a first side wall and a second side wall opposite to each other; and one side of the first side wall away from each of the pixel units and one side of the second side wall away from each of the pixel units are intersected.
18. 18 . The electronic device according to claim 10 , wherein the first gap comprises a third side wall, a fourth side wall, and a fifth side wall; the third side wall and the fifth side wall are opposite to each other; and the fourth side wall is arranged between the third side wall and the fifth side wall and is connected to the third side wall and the fifth side wall.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2022/075343, filed Feb. 7, 2022, which claims priority to Chinese Patent Application No. 202110175261.7, filed Feb. 9, 2021. The entire contents of each of the above-referenced applications are expressly incorporated herein by reference. TECHNICAL FIELD This application relates to the technical field of communication devices, and particularly to a flexible display module and an electronic device. BACKGROUND With the rapid development of electronic devices, the electronic devices are used in more and more fields. Electronic devices such as a mobile phone and a tablet computer play an increasingly important role in people's work, life, entertainment, and other aspects. A display module is a main component for realizing a display function of the electronic device. With the continuous improvement of science and technology and increasingly high demands of people, a foldable flexible display module emerges. The existing flexible display module can be folded or stretched. When the flexible display module is folded, the flexible display module has a relatively small volume, and is convenient to carry. When the flexible display module is unfolded, an effective display area of the flexible display module increases, thereby improving the display performance of the electronic device. In the relevant technology, the flexible display module is formed by stacking and encapsulating a plurality of material layers, and the plurality of material layers are subjected to significant stress, which can easily cause the material layers to crack or drape. As a result, the display performance of the flexible display module is poor. SUMMARY The embodiments of this application provide a flexible display module and an electronic device. The embodiments of this application provide a flexible display module, including: a flexible substrate, where the flexible substrate has a folding region; the folding region is provided with a first gap; the first gap extends from a first side surface to a second side surface in a thickness direction of the flexible substrate; a first preset distance is reserved between one end of the first gap and the second side surface of the flexible substrate; the first gap penetrates through the flexible substrate along a lengthwise direction or a width direction of the flexible substrate; anda plurality of pixel units, where the plurality of pixel units are distributed on the first side surface of the flexible substrate at intervals, and the pixel units adjacent to the first gap are spaced apart from the first gap. The embodiments of this application provide an electronic device, including the above flexible display module. In the embodiments of this application, the flexible substrate has the folding region; the folding region is provided with the first gap; the first gap extends from the first side surface to the second side surface in the thickness direction of the flexible substrate. The pixel units adjacent to the first gap are spaced apart from the first gap. When the flexible display module is folded, the first gap is opened. When the flexible display module is unfolded, the first gap is closed. In this solution, when the flexible display module is folded, the first gap of the flexible substrate is opened, which reduces a pulling stress on the first side surface and an extrusion stress on the second side surface, thereby eliminating some stress that is concentrated in the folding region and causing a relatively low stress on the folding region. Meanwhile, the two adjacent pixel units adjacent to the first gap are separated from the first gap, which reduces the pulling stress and the extrusion stress between the pixel units, thereby reducing a surface stress of the flexible display module in the folded state. Thus, the flexible display module is not easy to crack or drape, making the flexible display module have relatively good display performance. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic structural diagram of a first kind of flexible display module in an unfolded state according to an embodiment of this application; FIG. 2 is a schematic structural diagram of a first kind of flexible display module in a folded state according to an embodiment of this application; FIG. 3 is a schematic structural diagram of a second kind of flexible display module in an unfolded state according to an embodiment of this application; FIG. 4 is a schematic structural diagram of a second kind of flexible display module in a folded state according to an embodiment of this application; FIG. 5 and FIG. 6 are schematic structural diagrams of a third kind of flexible display module in an unfolded state according to an embodiment of this application; FIG. 7 and FIG. 8 are schematic structural diagrams of a third kind of flexible display module in a folded state according to an embodiment of this application; FI