WO-2026091755-A1 - SCREEN ASSEMBLY STRUCTURE, SCREEN ASSEMBLY METHOD, AND ELECTRONIC DEVICE

WO2026091755A1WO 2026091755 A1WO2026091755 A1WO 2026091755A1WO-2026091755-A1

Abstract

The present application provides a screen assembly structure, a screen assembly method, and an electronic device. In the screen assembly structure, on the basis of providing a back adhesive between a screen and a middle plate portion of a middle frame, a characteristic adhesive is further additionally provided between the screen and the middle plate portion, the characteristic adhesive and the back adhesive are both close to the edge of the screen, and the back adhesive and the characteristic adhesive are spaced apart. The characteristic adhesive is made of an adhesive material having a specific modulus, and has a loss factor greater than 0.3 and a loss modulus greater than 30 MPa, such that the characteristic adhesive has characteristics such as high shear bonding strength and high energy consumption. The characteristic adhesive and the back adhesive cooperate with each other to jointly bond the screen to the middle plate portion, so that the bonding strength between the screen and the middle plate portion can be increased. Moreover, when an electronic device is in risk scenarios such as falling and collision, the characteristic adhesive can suppress the vibration of the screen and consume the impact energy received by the middle frame. In addition, the vibration damping and energy absorption effect of the adhesive can significantly reduce the probability of problems such as small bright points, local damage, and cracks on the screen, thereby effectively protecting the screen from being damaged, and further improving the reliability and service life of the screen.

Inventors

ZHI, Richeng
SONG, Shaohua
XU, CHUAN

Assignees

荣耀终端股份有限公司

Dates

Publication Date: 20260507
Application Date: 20250808
Priority Date: 20241028

Claims (20)

A screen assembly structure, characterized in that it comprises: The middle frame includes a middle plate portion and a side frame portion, wherein the side frame portion surrounds the periphery of the middle plate portion; The screen is supported on the middle plate. Adhesive backing is provided between the back of the screen and the middle plate portion, and near the edge of the screen; The special adhesive is disposed between the back of the screen and the middle plate, near the edge of the screen and spaced apart from the back adhesive; The loss factor of the special adhesive is greater than 0.3, and the loss modulus is greater than 30 MPa.
According to claim 1, the screen assembly structure is characterized in that the elastic modulus of the special adhesive is 80MPa-120MPa.
According to claim 1, the screen assembly structure is characterized in that the shear bond strength of the special adhesive is greater than 5 MPa.
The screen assembly structure according to any one of claims 1-3 is characterized in that the distance between the special adhesive and the back adhesive is 2mm-5mm.
According to any one of claims 1-3, the screen assembly structure is characterized in that the adhesive comprises a top section and a side section, the top section is disposed near the top edge of the screen and covers at least both top ends of the screen, the side section is disposed near the side edge of the screen and covers at least a portion of the side edge of the screen, and the side section is connected to the top section.
According to the screen assembly structure of claim 5, the upper end of the side segment is connected to the top segment, and the lower end of the side segment extends to the bottom edge near the screen.
According to claim 5, the screen assembly structure is characterized in that the top segment completely covers the top of the screen.
According to the screen assembly structure of claim 5, the characteristic adhesive further includes a bottom section, the bottom section being disposed near the bottom edge of the screen, and the bottom section extending a predetermined distance from the side edge of the screen towards the center of the screen.
The screen assembly structure according to any one of claims 1-3 is characterized in that the backing adhesive surrounds the outer periphery of the characteristic adhesive.
The screen assembly structure according to any one of claims 1-3 is characterized in that the color of the special adhesive is black.
The screen assembly structure according to any one of claims 1-3, characterized in that the screen comprises: Display module; A cover plate is disposed on the side surface of the display module opposite to the middle plate.
The screen assembly structure according to claim 11, characterized in that it further comprises: Side sealing adhesive is applied to the sidewall of the display module, and the side sealing adhesive at least covers the location of the sound outlet of the screen and avoids the bottom edge of the screen.
According to claim 12, the screen assembly structure is characterized in that a protective seam is provided between the sidewall of the screen and the frame portion, and the screen assembly structure further includes: The sealant fills the protective seam and is disconnected at the location of the sound outlet seam.
According to the screen assembly structure of claim 13, the side sealant covers the location of the sound outlet seam of the screen, and the screen assembly structure further includes: The dammed adhesive is located on both sides of the sound outlet joint and connects the sealant and the side sealant.
According to the screen assembly structure of claim 12, the frame portion extends a stepped portion toward the side of the screen, the stepped portion protrudes from the middle plate portion toward the side of the screen, and the stepped portion is located at least at the bottom edge of the screen. The step portion is located on the outside of the display module, the cover plate overlaps the step portion, and a step adhesive is provided between the cover plate and the step portion.
According to the screen assembly structure of claim 15, the side sealing adhesive covers the top edge and side edge of the screen, the step adhesive covers the bottom edge of the screen, and the screen assembly structure further includes: The damming adhesive is located at both ends of the bottom edge of the screen and connects the step adhesive and the side sealing adhesive.
A screen assembly method, characterized in that it includes: A screen is provided, wherein the back of the screen is provided with adhesive; A special adhesive is applied to the back of the screen, with the special adhesive spaced apart from the backing adhesive. The screen is mounted on the middle plate of the mid-frame.
According to claim 17, the screen assembly method is characterized in that, before attaching the screen to the middle plate of the middle frame, it further includes: The edge portion of the middle frame is coated with sealant.
According to claim 18, the screen assembly method is characterized in that, after attaching the screen to the middle plate of the middle frame, it further includes: The sealant and the special adhesive are cured to securely attach the screen to the mid-frame.
An electronic device, characterized in that it includes a back cover and a screen assembly structure as described in any one of claims 1-16, wherein the back cover is connected to the side of the mid-frame opposite to the screen.

Description

Screen assembly structure, screen assembly method and electronic equipment This application claims priority to Chinese Patent Application No. 202411516194.0, filed on October 28, 2024, entitled “Screen Assembly Structure, Screen Assembly Method and Electronic Device”, the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of electronic product technology, and in particular to a screen assembly structure, screen assembly method and electronic device. Background Technology Currently, a large number of users still experience broken screens on electronic devices (such as mobile phones) manufactured by various companies. Specifically, electronic devices often experience screen cracks due to drops, impacts, or other reasons during use. Therefore, the drop resistance of electronic devices still needs improvement. Summary of the Invention This application provides a screen assembly structure and assembly method, as well as an electronic device. The screen assembly structure improves the screen's shock absorption and drop resistance, making the screen more reliable and reducing the probability of screen breakage. The first aspect of this application provides a screen assembly structure, including: a middle frame, including a middle plate portion and a frame portion, the frame portion surrounding the periphery of the middle plate portion; a screen, supported on the middle plate portion; an adhesive backing, disposed between the back of the screen and the middle plate portion, and close to the edge of the screen; and a special adhesive, disposed between the back of the screen and the middle plate portion, close to the edge of the screen, and spaced apart from the adhesive backing; wherein the special adhesive has a loss factor greater than 0.3 and a loss modulus greater than 30 MPa. The screen assembly structure provided in this application, in addition to the back adhesive between the screen and the middle plate of the mid-frame, also includes a special adhesive between the screen and the middle plate. Both the special adhesive and the back adhesive are located near the edge of the screen and are spaced apart. The special adhesive uses a specific modulus material with a loss factor greater than 0.3 and a loss modulus greater than 30 MPa, giving it characteristics such as high shear bond strength and high energy dissipation. The special adhesive, together with the back adhesive, bonds the screen to the middle plate, increasing the bond strength between the screen and the middle plate and improving the stability and reliability of the screen. Simultaneously, in high-risk scenarios such as drops and collisions, the special adhesive can suppress screen vibration and dissipate the impact energy received by the mid-frame. Combined with the vibration damping and energy absorption effect of the back adhesive, this significantly reduces the probability of screen breakage, localized damage, cracks, and other problems, effectively protecting the screen from damage and further improving its reliability and lifespan. In one possible implementation, the elastic modulus of the special adhesive is 80MPa-120MPa. In this way, the adhesive has a high elastic modulus, ensuring sufficient shear strength and effectively suppressing screen vibration and preventing screen slippage. Simultaneously, the elastic modulus is not excessively high, ensuring sufficient adhesion for reliable bonding between the screen and the frame. This also keeps the ratio of the adhesive's loss modulus to its elastic modulus within a suitable range, meeting the requirements for the adhesive's loss factor. In one possible implementation, the shear bond strength of the special adhesive is greater than 5 MPa. In this way, the adhesive has high bonding strength, ensuring a reliable bond between the screen and the mid-frame. Simultaneously, the adhesive's high shear strength significantly suppresses screen vibration and effectively prevents screen movement. In one possible implementation, the gap between the special adhesive and the backing adhesive is 2mm-5mm. In this way, the special adhesive and the backing adhesive have a certain gap, which can prevent them from sticking together and allow them to function stably and reliably. Furthermore, the close spacing between the special adhesive and the backing adhesive allows them to work together effectively to provide shock absorption, vibration damping, and energy dissipation prevention. In one possible implementation, the adhesive includes a top section and a side section, the top section being disposed near the top edge of the screen and covering at least both top ends of the screen, and the side section being disposed near the side edge of the screen and covering at least a portion of the side edge of the screen. In this way, the adhesive can avoid the flexible circuit boards, chips, and other components located at the bottom of the screen. Furthermore