EP-4742222-A1 - DISPLAY MODULE AND ELECTRONIC DEVICE

EP4742222A1EP 4742222 A1EP4742222 A1EP 4742222A1EP-4742222-A1

Abstract

This application provides a display module and an electronic device. The display module includes a display panel, a first module stack layer, and a transmission layer that are stacked. The first module stack layer is located on a side away from a light-emitting surface of the display panel. A first substack layer of the first module stack layer is stacked between the transmission layer and the display panel. The first substack layer includes a hard material. At least two wiring connection structures of the display module are connected to the transmission layer, one of the at least two wiring connection structures is configured to electrically connect to a first component in the electronic device, and another of the at least two wiring connection structures is configured to electrically connect to a second component in the electronic device, so that the transmission layer is configured to transmit a signal between the first component and the second component. In this application, a compact structure of the electronic device can be implemented through the display module, to help save internal space of the electronic device.

Inventors

MENG, Chao
CHEN, JIANQIU
FU, RUHAI
XU, JIANGUO

Assignees

Huawei Technologies Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20241210

Claims (20)

A display module, wherein the display module is used in an electronic device, the display module comprises a display panel, a first module stack layer, and a transmission layer that are stacked, the first module stack layer is located on a side away from a light-emitting surface of the display panel, the first module stack layer comprises a first substack layer, the first substack layer is stacked between the transmission layer and the display panel, and the first substack layer comprises a hard material; and the display module further comprises a display connection structure and at least two wiring connection structures, the display panel is electrically connected to a control unit in the electronic device through the display connection structure, the transmission layer is electrically connected to the at least two wiring connection structures, one of the at least two wiring connection structures is configured to electrically connect the transmission layer to a first component in the electronic device, and another of the at least two wiring connection structures is configured to electrically connect the transmission layer to a second component in the electronic device, so that the transmission layer transmits a signal between the first component and the second component.
The display module according to claim 1, wherein the hard material of the first substack layer comprises a carbon fiber or hard alloy material.
The display module according to claim 1 or 2, wherein the display module has a first window and a second window; in a thickness direction of the display module, the first window and the second window are located on a side that is of the transmission layer and that is away from the display panel, and a direction in which the display panel, the first module stack layer, and the transmission layer are stacked is the thickness direction of the display module; and one of the at least two wiring connection structures is electrically connected to the wiring layer of the transmission layer in the first window, and another of the at least two wiring structures is electrically connected to the wiring layer of the transmission layer in the second window.
The display module according to claim 3, wherein the first module stack layer further comprises a second substack layer, the second substack layer and the first substack layer are made of different materials, the transmission layer is located between the first substack layer and the second substack layer, the second substack layer is made of a flexible material and configured to form an electrostatic protection structure on a side that is of the transmission layer and that is away from the first substack layer, and the first window and the second window penetrate the second substack layer.
The display module according to claim 4, wherein a thickness of the first substack layer ranges from 100 µm to 300 µm; and a thickness of the second substack layer ranges from 20 µm to 50 µm.
The display module according to claim 3, wherein the first module stack layer is located between the transmission layer and the display panel, the transmission layer is pasted to the first module stack layer through an adhesive layer, the transmission layer comprises a substrate layer and the wiring layer, the wiring layer is stacked between the substrate layer and the first module stack layer, and the first window and the second window penetrate the substrate layer.
The display module according to claim 3, wherein the first module stack layer is located between the transmission layer and the display panel, the transmission layer comprises a substrate layer and the wiring layer, the substrate layer is pasted to the first module stack layer through an adhesive layer, the wiring layer is located on a side that is of the substrate layer and that is away from the first module stack layer, the display module further comprises a bottom protective layer, the bottom protective layer covers the wiring layer on a side that is of the wiring layer and that is away from the substrate layer, and the first window and the second window penetrate the bottom protective layer.
A display module, used in an electronic device, wherein the display module comprises a transmission layer and a display panel that are stacked, and the transmission layer is located on a side away from a light-emitting surface of the display panel; and the display module further comprises a display connection structure and at least two wiring connection structures, the display panel is electrically connected to a control unit in the electronic device through the display connection structure, the at least two wiring connection structures each are connected to an edge of the transmission layer, and one of the at least two wiring connection structures is configured to electrically connect the transmission layer to a first component in the electronic device, and another of the at least two wiring connection structures is configured to electrically connect the transmission layer to a second component in the electronic device, so that the transmission layer transmits a signal between the first component and the second component.
The display module according to claim 8, wherein the display panel comprises a base layer, a shield layer, and a panel function layer that are sequentially stacked, and the shield layer comprises a conductive material; and the transmission layer comprises a wiring layer, and at least partial signal isolation is implemented between the wiring layer and the panel function layer through the conductive material of the shield layer.
The display module according to claim 9, wherein the conductive material of the shield layer covers an entire surface of the base layer.
The display module according to claim 9 or 10, wherein the transmission layer comprises a substrate layer, the wiring layer is formed on a surface of the substrate layer, and the wiring layer is pasted to the base layer and/or the first module stack layer through an adhesive layer.
The display module according to claim 11, wherein a thickness of the substrate layer ranges from 10 µm to 50 µm.
The display module according to claim 11 or 12, wherein an elastic modulus of the substrate layer is 2.5 GPa to 9 GPa; and/or an elongation at break of the substrate layer needs to be greater than 5%.
The display module according to any one of claims 9 to 13, wherein a thickness of the wiring layer ranges from 3 µm to 10 µm.
The display module according to any one of claims 9 to 14, wherein the display module is used in an electronic device having a folding function, the display module is capable of switching between a folded state and an unfolded state, the display module comprises a first portion, a second portion, and a connection portion connected between the first portion and the second portion, the connection portion is configured to bend and deform in a process of switching between the folded state and the unfolded state, the wiring connection structure configured to electrically connect to the first component is connected to the first portion, the wiring connection structure configured to electrically connect to the second component is connected to the second portion, both the first portion and the second portion are rectangular, the transmission layer and the display panel form a stacked structure, the stacked structure comprises a first edge and a second edge that are adjacent to each other, the first edge is a long edge of the first portion, a part of the second edge forms a short edge of the first portion, a part of the second edge forms a short edge of the second portion, the display connection structure is connected to the first edge, and at least two of the wiring connection structures are connected to the second edge.
The display module according to any one of claims 9 to 14, wherein the display module is used in an electronic device having a folding function, the display module is capable of switching between a folded state and an unfolded state, the display module comprises a first portion, a second portion, and a connection portion connected between the first portion and the second portion, the connection portion is configured to bend and deform in a process of switching between the folded state and the unfolded state, the wiring connection structure configured to electrically connect to the first component is connected to the first portion, the wiring connection structure configured to electrically connect to the second component is connected to the second portion, both the first portion and the second portion are rectangular, the transmission layer and the display panel form a stacked structure, the stacked structure comprises a first edge and a third edge that are opposite to each other, the display connection structure is connected to the first edge, one of the wiring connection structures is connected to the first edge and overlaps with the display connection structure, and another of the wiring connection structures is connected to the third edge.
The display module according to any one of claims 9 to 14, wherein the display module is used in an electronic device having a folding function, the display module is capable of switching between a folded state and an unfolded state, the display module comprises a first portion, a second portion, and a connection portion connected between the first portion and the second portion, the connection portion is configured to bend and deform in a process of switching between the folded state and the unfolded state, the wiring connection structure configured to electrically connect to the first component is connected to the first portion, the wiring connection structure configured to electrically connect to the second component is connected to the second portion, both the first portion and the second portion are rectangular, the transmission layer and the display panel form a stacked structure, the stacked structure comprises a first edge and a third edge that are opposite to each other, the display connection structure is connected to a first region of the first edge, one of the wiring connection structures is connected to a second region of the first edge and arranged side by side with the display connection structure, and another of the wiring connection structures is connected to the third edge.
The display module according to any one of claims 9 to 14, wherein the display module is used in an electronic device having a folding function, the display module is capable of switching between a folded state and an unfolded state, the display module comprises a first portion, a second portion, and a connection portion connected between the first portion and the second portion, the connection portion is configured to bend and deform in a process of switching between the folded state and the unfolded state, the wiring connection structure configured to electrically connect to the first component is connected to the first portion, the wiring connection structure configured to electrically connect to the second component is connected to the second portion, both the first portion and the second portion are rectangular, the transmission layer and the display panel form a stacked structure, the stacked structure comprises a first edge, one of the wiring connection structures is connected to the first edge, the display connection structure is connected to the first edge, the display connection structure and the wiring connection structure connected to the first edge are connected to different flexible circuit boards, the display connection structure is electrically connected to the control unit in the electronic device through the flexible circuit board, and the wiring connection structure implements a conductive connection between the transmission layer and a component in the electronic device through the flexible circuit board.
The display module according to any one of claims 9 to 14, wherein the display module is used in an electronic device having a folding function, the display module is capable of switching between a folded state and an unfolded state, the display module comprises a first portion, a second portion, and a connection portion connected between the first portion and the second portion, the connection portion is configured to bend and deform in a process of switching between the folded state and the unfolded state, the wiring connection structure configured to electrically connect to the first component is connected to the first portion, the wiring connection structure configured to electrically connect to the second component is connected to the second portion, both the first portion and the second portion are rectangular, the transmission layer and the display panel form a stacked structure, the stacked structure comprises a first edge, one of the wiring connection structures is connected to the first edge, the display connection structure is connected to the first edge, the display connection structure and the wiring connection structure connected to the first edge are connected to different positions of a same flexible circuit board, the display connection structure is electrically connected to the control unit in the electronic device through the flexible circuit board, and the wiring connection structure implements a conductive connection between the transmission layer and a component in the electronic device through the flexible circuit board.
The display module according to any one of claims 8 to 19, wherein the display module further comprises the first module stack layer, and the transmission layer is disposed between the display panel and the first module stack layer.

Description

This application claims priority to Chinese Patent Application No. 202311715876.X, filed with the China National Intellectual Property Administration on December 13, 2023 and entitled "DISPLAY MODULE AND ELECTRONIC DEVICE", which is incorporated herein by reference in its entirety. TECHNICAL FIELD This application relates to the field of display technologies, and in particular, to a display module and an electronic device. BACKGROUND A large quantity of transmission lines (which may be signal transmission lines and power transmission lines) are distributed inside an electronic device like a terminal. For example, the transmission lines may be roughly classified into the following types: display signal, camera signal, radio frequency signal, audio signal, sensor, power supply, and the like. Arranging numerous transmission lines inside the electronic device requires design for line storage and organization while occupying internal space of the electronic device. For example, the transmission lines are designed in a form of a flexible printed circuit (Flexible Printed Circuit, FPC), to enable communication and power supply between a system on a chip (System on a chip, SoC) and each hardware interface. The FPC needs to be independently assembled and fastened. The FPC needs to occupy space in the electronic device, especially space in a thickness direction of the electronic device. This is not conducive to a compact structure and thin design of the electronic device. SUMMARY Embodiments of this application provide a display module and an electronic device. A display panel and a transmission layer are integrated into the display module. The transmission layer transmits a signal between a first component and a second component in the electronic device, so that an internal structure of the electronic device is compact and a thin design is easy to implement. According to a first aspect, an embodiment of this application provides a display module, used in an electronic device. The display module includes a display panel, a first module stack layer, and a transmission layer that are stacked. The first module stack layer is located on a side away from a light-emitting surface of the display panel. The first module stack layer includes a first substack layer. The first substack layer is stacked between the transmission layer and the display panel. The first substack layer includes a hard material. The display module further includes a display connection structure and at least two wiring connection structures. The display panel is electrically connected to a control unit in the electronic device through the display connection structure. The transmission layer is electrically connected to the at least two wiring connection structures. One of the at least two wiring connection structures is configured to electrically connect the transmission layer to a first component in the electronic device, and another of the at least two wiring connection structures is configured to electrically connect the transmission layer to a second component in the electronic device, so that the transmission layer transmits a signal between the first component and the second component. In this application, the transmission layer and the display panel are integrated into the display module. The display module performs a display function through the display panel and a signal transmission function through the transmission layer. Signal transmission between the first component and the second component in the electronic device can be implemented through the transmission layer. There is no need to dispose more transmission lines in the electronic device, to reduce a quantity of transmission lines in an apparatus body of the electronic device and facilitate a light and thin design of the apparatus body. Because a line in the transmission layer is a patterned wiring structure, for the display module, a newly added line is prone to a pattern imprint. The pattern imprint may be understood as that an imprint formed by a pattern of an internal line can be seen on a display surface of the display module. The pattern imprint affects quality, reliability, and user experience of the display module. In this application, the first substack layer in the first module stack layer is disposed between the transmission layer and the display panel. The transmission layer is isolated from the display panel through the hard material of the first substack layer, to prevent a pattern imprint on the display module due to the transmission layer, and improve the quality and reliability of the display module. In a possible implementation, the hard material of the first substack layer includes a carbon fiber or hard alloy material. In an implementation of this application, the hard material of the first substack layer may be specifically the carbon fiber or hard alloy material. The hard alloy material may be a 304 alloy, a titanium alloy, or the like. In a possible implementatio