CN114077329A - Auxiliary laminating device and method for display screen assembly - Google Patents
Auxiliary laminating device and method for display screen assembly Download PDFInfo
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- CN114077329A CN114077329A CN202010837727.0A CN202010837727A CN114077329A CN 114077329 A CN114077329 A CN 114077329A CN 202010837727 A CN202010837727 A CN 202010837727A CN 114077329 A CN114077329 A CN 114077329A
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- display screen
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- pressure container
- flexible display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application provides a display screen assembly attaching auxiliary device and an attaching method thereof; this laminating auxiliary device includes: a negative pressure container and a transmission pipeline; the negative pressure container is made of a flexible film material and can be wrapped, pressed and attached to two sides of the glass cover plate of the display screen assembly, which are opposite to the flexible display screen; the transmission pipeline is communicated with the negative pressure container and is used for providing negative pressure for the negative pressure container; and then the negative pressure container extrudes the glass cover plate and the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged. By means of the structure that the negative pressure container is matched with the transmission pipeline, the problem of removing wrinkles and bubbles after the screen is attached can be solved on the premise that the flexible screen is not damaged; has the characteristics of simple structure, convenient operation and low cost.
Description
Technical Field
The invention relates to the technical field of an assembling method of a display screen of electronic equipment, in particular to a bonding auxiliary device of a display screen assembly and a bonding method thereof.
Background
At present along with the development of electronic equipment such as cell-phone, panel computer, the screen structure requirement to electronic equipment is higher and higher, from bang screen, the screen of punching to the full face screen to along with the maturity of flexible display module group technique in recent years, more and more display screen forms begin to be popular, however the electronic equipment of current utilization flexible screen structure all has a great deal of problems in aspects such as structural design, assembled mode, temporarily still can't realize extensive volume production.
Disclosure of Invention
The embodiment of the application provides a fitting auxiliary device for a display screen assembly, wherein the display screen assembly comprises a glass cover plate and a flexible display screen which are connected in an adhering mode; the fitting auxiliary device includes: a negative pressure container and a transmission pipeline; the negative pressure container is made of a flexible film material and can be wrapped, pressed and attached to two sides of the glass cover plate of the display screen assembly, which are opposite to the flexible display screen; the transmission pipeline is communicated with the negative pressure container and is used for providing negative pressure for the negative pressure container; and then the negative pressure container extrudes the glass cover plate and the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged.
In a second aspect, an embodiment of the present application provides a method for attaching a display screen assembly of an attachment assisting apparatus based on any one of the foregoing embodiments, where the method includes:
placing the display screen assembly in a negative pressure container; the display screen assembly comprises a glass cover plate and a flexible display screen which are connected in an adhesive mode;
and negative pressure is provided for the negative pressure container through the transmission pipeline, so that the negative pressure container is attached to and pressed on two sides of the glass cover plate, which are opposite to each other, of the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged.
According to the attaching auxiliary device and the attaching method of the display screen assembly, provided by the embodiment of the application, the problem of removing wrinkles and bubbles after the screen is attached can be solved on the premise of not damaging the flexible screen through the structure that the negative pressure container is matched with the transmission pipeline; has the characteristics of simple structure, convenient operation and low cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of an embodiment of an electronic device according to the present application;
FIG. 2 is a schematic diagram of another perspective of the electronic device in the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of a split structure of the electronic device in the embodiment of FIG. 1;
FIG. 4 is a schematic front view of the display panel assembly of the present embodiment;
FIG. 5 is a schematic diagram of a back side structure of the display panel assembly of the present embodiment;
FIG. 6 is a schematic cross-sectional view of the display screen assembly of FIG. 4 at A-A;
FIG. 7 is an enlarged view of a portion of the structure at B in FIG. 6;
FIG. 8 is a schematic side view of the display module shown in FIG. 4;
FIG. 9 is a schematic side view of the glass cover plate of FIG. 4;
FIG. 10 is a schematic view of a display screen assembly assembled according to a conventional technique;
FIG. 11 is a schematic flowchart of an embodiment of a display screen assembly attaching method according to the present application;
FIG. 12 is a schematic structural diagram of an embodiment of a bonding jig of a display panel assembly according to the present application;
FIG. 13 is a schematic view of the bonding jig shown in FIG. 12 from another perspective;
FIG. 14 is a schematic view of the flexible display screen before being attached to the attaching jig by the easy-pull adhesive;
FIG. 15 is a schematic view of a flexible display screen after being attached to an attaching jig through an easy-pull adhesive;
FIG. 16 is an enlarged schematic view of the structure at C in FIG. 13;
FIG. 17 is a schematic view showing a process of slidably inserting the attaching jig with the flexible display screen attached thereto into the attaching space of the glass cover plate;
FIG. 18 is a schematic cross-sectional view of the structure of FIG. 17 at D-D;
FIG. 19 is an enlarged view of a portion of the structure at E in FIG. 18;
FIG. 20 is a schematic flow chart diagram illustrating a display screen assembly bonding method according to another embodiment of the present disclosure;
FIG. 21 is a schematic flow chart diagram of an embodiment of a method for bubble removal for a display screen assembly;
FIG. 22 is a schematic structural view of an embodiment of the application of the fit-assist apparatus;
FIG. 23 is a schematic view of a display screen assembly positioned within the fit aid;
FIG. 24 is a schematic cross-sectional view of the structure of FIG. 23 at F-F;
FIG. 25 is a schematic cross-sectional view of the structure at G-G in FIG. 23;
FIG. 26 is an enlarged view of a portion of the structure at H in FIG. 24;
FIG. 27 is an enlarged partial cross-sectional view of FIG. 22 at I;
FIG. 28 is a schematic view of the circuit protection bracket in a mated state with the display panel assembly;
FIG. 29 is a schematic diagram of an embodiment of a circuit protection bracket;
FIG. 30 is a partial schematic view of the circuit protection bracket in mated condition with the display screen assembly;
FIG. 31 is a schematic view of a display screen assembly in accordance with yet another embodiment of the present disclosure;
FIG. 32 is a schematic view of the structure of FIG. 31 from another perspective;
FIG. 33 is a schematic view of the construction of the draft tube of the embodiment of FIG. 32;
FIG. 34 is an enlarged view of a portion of the structure at J in FIG. 33;
FIG. 35 is a flow diagram illustrating another embodiment of a method for bubble removal for a display screen assembly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only illustrative of the present invention, and do not limit the scope of the present invention. Likewise, the following examples are only some but not all examples of the present invention, and all other examples obtained by those skilled in the art without any inventive step are within the scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.
Referring to fig. 1 to fig. 3, fig. 1 is a schematic overall structure diagram of an embodiment of an electronic device of the present application, and fig. 2 is a schematic structure diagram of another view angle of the electronic device in the embodiment of fig. 1; FIG. 3 is a schematic diagram of a split structure of the electronic device in the embodiment of FIG. 1; it should be noted that the terminal device in the present application may include a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like. The electronic devices include, but are not limited to: the display device includes a display unit 10, a package assembly 20, a camera module 30, a circuit board 40, a battery 50, and a functional device 60. Functional devices 60 may include, among other things, sockets, speakers, sensors, etc., which are not listed here within the understanding of those skilled in the art. It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.
Specifically, the display unit 10 includes a display screen assembly 100 and a support member 200. The electronic device in this embodiment has a surround screen structure, where the positions marked with diagonal lines in fig. 1 and 2 are indicated as display areas of the display screen of the electronic device. Referring to fig. 4 to 6 together, fig. 4 is a schematic front structure diagram of the display panel assembly of the present embodiment, fig. 5 is a schematic back structure diagram of the display panel assembly of the present embodiment, and fig. 6 is a schematic cross-sectional structure diagram at a-a of the display panel assembly of fig. 4; the display panel assembly 100 in this embodiment includes a glass cover plate 110 and a display panel module 120. The glass cover plate 110 and the package assembly 20 together enclose to form an accommodating space, and the camera module 30, the circuit board 40, the battery 50 and the functional device 60 are disposed in the accommodating space.
The package assembly 20 is covered on the cover gap 1100 of the glass cover plate 110 and the opening positions of the two opposite ends of the glass cover plate 110; the glass cover plate 110 and the packaging component 20 are enclosed together to form an accommodating space, the circuit board 40 and the camera module 30 are arranged in the accommodating space, and the camera module 30 is arranged corresponding to the cover plate gap 1100 of the glass cover plate 110 and can be used for lighting through the packaging component 20; the circuit board 40 is electrically connected to the display screen module 120 and the camera module 30, respectively.
Optionally, the package assembly 20 comprises a package plate 23, a first cover plate 21 and a second cover plate 22; the encapsulation plate 23 covers the cover plate gap 1100 of the glass cover plate 110, and the first cover plate 21 and the second cover plate 22 respectively cover the opening positions at the two opposite ends of the glass cover plate 110; the camera modules 30 are disposed corresponding to the package plate 23, wherein the number of the camera modules 30 may be one or more.
Referring to fig. 7 and 8 together, fig. 7 is an enlarged view of a portion of the structure at B in fig. 6; FIG. 8 is a schematic side view of the display module shown in FIG. 4. The display module 120 in this embodiment may be bonded to the glass cover plate 110 by the optical adhesive 102. The display module 120 can be an OLED flexible display or an AMOLED (Active-matrix organic light-emitting diode, Active matrix organic light-emitting diode, or Active matrix organic light-emitting diode); the display module 120 includes a first display portion 121, a second display portion 122, a third display portion 123 and a fourth display portion 124.
Optionally, the first display portion 121 and the third display portion 123 are disposed opposite to each other, the first display portion 121 and the third display portion 123 are both in a planar structure, and the first display portion 121 is parallel to the third display portion 123. Of course, in some other embodiments, the first display portion 121 and the third display portion 123 may be in a non-parallel structure, for example, disposed at an angle, and are not described herein again within the understanding scope of the skilled in the art. The second display part 122 has an arc-shaped structure and is used for connecting the first display part 121 and the third display part 123; the fourth display portion 124 is also arc-shaped, and is integrally extended from the second display portion 122 at two opposite sides of the first display portion 121, and the fourth display portion 124 and the second display portion 122 extend toward the same side of the first display portion 121; a display gap 1200 is formed between the third display portion 123 and the fourth display portion 124. It should be noted that the terms "first", "second" and "third" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 9, fig. 9 is a schematic side view of the structure of the glass cover plate 110 in fig. 4, the glass cover plate is disposed on the outer surface of the display module 120 for displaying. In this embodiment, the inner surface of the glass cover plate 110 is matched with the outer surface of the display module 120 in shape, and is bonded to the outer surface of the display module 120 through the transparent optical adhesive 102. The glass cover plate 110 includes a first cover plate portion 111, a second cover plate portion 112, a third cover plate portion 113, and a fourth cover plate portion 114, which are integrally formed.
The first cover plate portion 111 and the third cover plate portion 113 are arranged oppositely, and the second cover plate portion 112 is of an arc-shaped structure and is used for connecting the first cover plate portion 111 and the third cover plate portion 113; the fourth cover plate portion 114 is also arc-shaped and extends integrally with the second cover plate portion 112 on two opposite sides of the first cover plate portion 111, and the fourth cover plate portion 114 and the second cover plate portion 112 extend toward the same side of the first cover plate portion 11; the first cover plate 111, the second cover plate 112, the third cover plate 113, and the fourth cover plate 114 are respectively provided to cover the outer surfaces of the first display unit 121, the second display unit 122, the third display unit 123, and the fourth display unit 124. A cover gap 1100 is formed between the third cover plate portion 113 and the fourth cover plate 114; the cover gap 1100 corresponds to the display gap 1200 of the display module 120.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a display panel assembly in the conventional technology, and a surround panel structure in the conventional technology is to attach a layer of PI film to a surface layer of a flexible display panel module to form a display panel assembly 001. The whole display screen component 001 is soft and can be bent. The structure realization form of the electronic equipment is that the flexible display screen component 001 is unfolded firstly, the electronic equipment is assembled according to a normal assembly mode, then the display screen component 001 is bent along the appearance of the whole machine, and finally the display screen component 001 is attached to the middle frame 002 of the electronic equipment.
The flexible screen and the PI film are jointed together by OCA (optical clear adhesive) in a planar state. This attachment is the same as conventional screen and cover attachment, i.e., in a flat condition. And wrinkles and air bubbles generated by the bonding between the two materials after the bonding are removed or driven out in a plane pressing and driving mode.
In the surrounding flexible screen structure in the conventional technology, the screen cover plate is made of a PI film. Although the PI film is easily deformed and bent, it is resistant to scratches and poor in impact resistance. In the using process of a user, the problems of scratch and the like can occur quickly, and the user experience and the appearance effect of the mobile phone are influenced. In addition, the PI film material of the screen cover plate structure has obvious difference with a glass cover plate when being viewed from the outside, the glass luster effect of the glass cover plate is not achieved, and the integral appearance expressive force of the electronic equipment is poor.
In comparison, the cover plate structure made of glass material is designed in the embodiment, and the cover plate structure has the characteristics of high strength, good scratch resistance and the like. The assembly method is also completely different from the conventional art. The screen apron that this scheme surrounded the screen is the glass material, consequently can't buckle after the apron shaping is accomplished and warp. After the cover plate is formed, the flexible display screen module is attached to the glass cover plate through OCA glue, and a display screen assembly is formed. It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
The screen cover plate that encircles the screen among the technical scheme of this application is the glass material, therefore can't buckle after glass cover plate 110 shaping is accomplished and warp. After the glass cover plate 110 is formed, the flexible display screen module 120 is attached to the inner surface of the glass cover plate 110 by OCA glue to form the display screen assembly 100 (see fig. 6 and 7 for details). The difficulty of this process is that after the glass cover plate 110 and the flexible display module 120 are adhered together by OCA glue, because the glass cover plate 110 is not planar and is in a bent state, slight wrinkles and bubbles generated by the adhesion cannot be removed according to the conventional wrinkle and bubble removing process, such as by pressing or driving. And too big power and production too big deformation can not exert to the flexible screen in the laminating process, otherwise the condition that the flexible screen is damaged appears easily, the bad scheduling problem of demonstration appears. The relative position accuracy of screen and glass apron still needs to be guaranteed in the laminating, otherwise the off normal appears, influences the screen and uses and complete machine equipment.
In view of this, the embodiment of the present application provides a method for attaching a display screen assembly, and the scheme mainly solves how to attach a flexible screen in a C-shaped glass cover plate form. This scheme has still designed a laminating tool, laminates flexible display screen and glass apron through this laminating tool. The problem point more than the C type glass apron screen laminating is solved simultaneously. Referring to fig. 11, fig. 11 is a schematic flowchart illustrating a display screen assembly attaching method according to an embodiment of the present application; the method includes, but is not limited to, the following steps.
Step M101, a glass cover plate is provided.
For the detailed structure of the glass cover plate, refer to the related description of the foregoing embodiments.
And M102, pre-bonding the flexible display screen on the outer surface of the bonding jig by using glue.
In this step, this application embodiment still provides a laminating tool, and the main thinking is, does a profile modeling tool, then bonds flexible display screen in advance on laminating tool with the help of easy drawing glue (or other glue that peel off easily).
Specifically, please refer to fig. 12 and 13 together, in which fig. 12 is a schematic structural diagram of an embodiment of a bonding jig of a display screen assembly of the present application, and fig. 13 is a schematic structural diagram of another view angle of the bonding jig in fig. 12; this laminating tool 300 can be the solid plate body structure that utilizes materials such as stainless steel, resin to make, specifically can include: the display panel comprises a first surface 310 and a second surface 320 which are arranged oppositely, wherein the two opposite sides of the first surface 310 and the second surface 320 are connected through a first side surface 330 and a second side surface 340, and the first side surface 330 and the second side surface 340 are both curved surfaces; the opposite ends of the first surface 310 and the second surface 320 are connected by a first end face 350 and a second end face 360; the first surface 310, the second surface 320 and the first side surface 330 are used for pre-bonding with a non-display side surface of a flexible display screen (the display screen module 120).
Optionally, the first surface 310, the second surface 320 and the first side surface 330 of the attaching jig 300 are bonded to the non-display side surface of the flexible display screen by the easy-open adhesive 88. Referring to fig. 14 and 15 together, fig. 14 is a schematic view of a state before the flexible display screen is attached to the attaching jig through the easy-pull adhesive, and fig. 15 is a schematic view of a state after the flexible display screen is attached to the attaching jig through the easy-pull adhesive. Easy-to-draw is glued 88 and is included bonding portion 881 and the starting part 882 of a body structure, bonding portion 881 is used for laminating tool 300 with the bonding of flexible display screen (also being display screen module 120), starting part 882 extends to laminating tool 300 with the outside in flexible display screen bonding region.
Referring to fig. 15 and 16 together, fig. 16 is an enlarged schematic view of a structure at C in fig. 13, in some embodiments, the first surface 310, the second surface 320, and the edge of the first side surface 330 adjacent to the first end surface 350 are provided with positioning protrusions 301, and the positioning protrusions 301 are used for positioning a flexible display screen attached to the first surface 310, the second surface 320, and the first side surface 330.
And M103, coating glue on the display side surface of the flexible display screen.
Referring to fig. 15, in step M103, glue is applied to the outer surface of the flexible display panel. The glue is liquid optical glue with good fluidity.
And M104, slidably inserting the attaching jig attached with the flexible display screen into the attaching space of the glass cover plate.
In this step, please refer to fig. 13 and 17 together, fig. 17 is a schematic view illustrating a process of slidably inserting a bonding jig with a flexible display screen attached to a bonding space of a glass cover plate, wherein a positioning rib 311 is disposed on the first surface 310, and the positioning rib 311 is protruded on the first surface 310; the positioning ribs 311 are used for positioning the glass cover plate 110 attached to the flexible display screen. The positioning rib 311 is used to be positioned in cooperation with the cover gap 1100 (see fig. 9 and 17 in combination) of the glass cover 110. The arrow direction in fig. 17 indicates the sliding direction of the attaching jig to which the flexible display panel is attached. In the sliding process, the liquid optical cement coated on the outer surface of the flexible display screen is gradually and uniformly coated by contacting with the glass cover plate 110.
Optionally, the positioning rib 311 is a strip-shaped structure, and an extending direction of the positioning rib is perpendicular to a plane where the first end surface 350 is located. The attaching jig 300 further includes an operation portion 370, and the operation portion 370 is disposed on the positioning rib 311. The operation portion 370 may be a protrusion structure, which is used as an operation handle of the bonding jig 300 to push the bonding jig 300 into the glass cover plate 110.
In some embodiments, please refer to fig. 13 and fig. 14, the attaching jig 300 further includes an avoiding groove 312, in the illustrated embodiment, the avoiding groove 312 is disposed on the first surface 310, and in some other embodiments, the avoiding groove 312 may also be disposed on the second surface 320, which is not limited herein. Because a part of the back of the flexible display screen is a bending part of the FPC1201 (or circuit board), the part has electronic devices, is fragile, cannot be stressed, or is easily damaged. Therefore, the flexible display FPC1201 bending area is grooved and avoided on the attaching jig 300, stress on the bending part of the FPC is avoided in the process that the attaching jig attached with the flexible display is inserted into the attaching space of the glass cover plate in a sliding mode, and the bending part is prevented from being damaged.
Alternatively, referring to fig. 18 and 19 together, fig. 18 is a schematic sectional view of the structure at D-D in fig. 17, and fig. 19 is an enlarged schematic view of a portion of the structure at E in fig. 18. The liquid optical cement 102 coated on the outer surface of the flexible display screen (flexible display module 120) is bonded to the glass cover plate 110.
And M105, removing the pre-bonded glue of the flexible display screen and the bonding jig, and further separating the flexible display screen from the bonding jig and bonding the flexible display screen and the glass cover plate to form a display screen assembly.
In step M105, the pop-top glue 88 may be removed by the starting portion 882 of the pop-top glue 88, so that the flexible display screen (the display screen module 120) is bonded to the glass cover 110 to form the display screen assembly.
And step M106, drawing the bonding jig out of the bonding space.
In step M106, the pulling direction may be the opposite direction of the arrow in fig. 17.
According to the attaching method in the embodiment of the application, the problem of removing wrinkles and bubbles after the screen is attached is solved on the premise of not damaging the flexible screen aiming at the new form of the surrounding screen of the glass cover plate; technical scheme in this application has the characteristics that the precision is high, through the tool respectively with the location of flexible display screen and glass apron, makes the relative position accurate laminating between flexible screen and the glass apron. According to the scheme in the embodiment of the application, the problem that wrinkles and bubbles cannot be removed through conventional plane extrusion/pressing operation can be solved for the new state of the glass cover plate surrounding screen, and the method for effectively attaching the flexible display screen and the glass cover plate is provided by means of accurate positioning of a jig and the characteristic that viscosity is reduced and is easy to peel when easy-to-pull adhesive is well pulled.
Optionally, referring to fig. 20, fig. 20 is a schematic flow chart of another embodiment of a display screen assembly attaching method according to the present application; the method is different from the previous embodiment in that after the flexible display screen and the glass cover plate are jointed (display screen assembly), the method further comprises the following steps.
And M107, placing the display screen assembly subjected to bonding in a pressure container, and removing bubbles generated between the flexible display screen and the glass cover plate in the bonding process in a pressurizing mode.
Wherein, the step M107 further comprises the following steps. Referring to fig. 21, fig. 21 is a flowchart illustrating an embodiment of a method for removing bubbles from a display panel assembly.
And step M1071, placing the display screen assembly in a negative pressure container.
The display screen assembly comprises a glass cover plate and a flexible display screen which are connected in an adhesive mode; i.e. the structure mentioned in the previous embodiment.
In this step, the present application provides a bonding assist device for a display screen assembly, please refer to fig. 22, fig. 22 is a schematic structural diagram of an embodiment of the bonding assist device of the present application, and the bonding assist device 400 includes: a negative pressure vessel 410 and a transfer line 420; the negative pressure container 410 is made of a flexible film material, and may be a plastic film or an airtight oily paper material, etc., which is within the understanding range of those skilled in the art and will not be described herein again. The negative pressure container 410 can be wrapped and attached to the glass cover plate of the display screen assembly and the two opposite sides of the flexible display screen in a pressing mode; that is, the negative pressure container 410 needs to press the glass cover plate and the flexible display screen from the two opposite sides of the display screen assembly (i.e., the glass cover plate and the flexible display screen are clamped by the opposite side walls of the negative pressure container 410), so that the purposes of pressing and discharging bubbles between the glass cover plate and the flexible display screen and eliminating folds of the flexible display screen can be achieved.
Optionally, referring to fig. 23 to 27 together, fig. 23 is a schematic view illustrating a state that the display screen assembly is placed in the auxiliary attaching device, fig. 24 is a schematic view illustrating a sectional structure at F-F in fig. 23, and fig. 25 is a schematic view illustrating a sectional structure at G-G in fig. 23; FIG. 26 is an enlarged view of a portion of the structure at H in FIG. 24; FIG. 27 is an enlarged partial cross-sectional view of FIG. 22 at I; in this embodiment, since the display panel assembly is of a C-shaped structure, the negative pressure container 410 can be formed by using a transparent plastic film to wrap and seal the inside and the outside of the display panel assembly 100 (one, two or more than one, without limitation, as long as the display panel assembly 100 can be wrapped), and the periphery of the edge of the negative pressure container 410 can be sealed by the sealant 411.
With continued reference to fig. 22, the transfer line 420 is in communication with the sub-atmospheric pressure container 410 for providing sub-atmospheric pressure to the sub-atmospheric pressure container 410; and then the negative pressure container 410 is enabled to press the glass cover plate 110 and the flexible display screen (the flexible display module 120), bubbles between the glass cover plate and the flexible display screen are discharged, and the attaching wrinkles between the flexible display screen and the glass cover plate are eliminated.
And M1072, providing negative pressure to the negative pressure container through the transmission pipeline, so that the negative pressure container is attached to and pressed on two sides of the glass cover plate, which are opposite to the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged.
In this step, optionally, the transmission pipeline 420 may be connected to a negative pressure generating device (such as an air pump, etc.) (not shown in the figure), so as to further achieve air extraction of the negative pressure container 410, so that the negative pressure container 410 is attached to and pressed on two sides of the glass cover plate 110 opposite to the flexible display screen (the flexible display module 120), and further to discharge air bubbles between the glass cover plate 110 and the flexible display screen and eliminate attachment wrinkles between the flexible display screen and the glass cover plate 110.
According to the auxiliary attaching device and the attaching method of the display screen assembly, provided by the embodiment, the problem of removing wrinkles and bubbles after the screen is attached can be solved on the premise of not damaging the flexible screen through the structure that the negative pressure container is matched with the transmission pipeline; has the characteristics of simple structure, convenient operation and low cost.
Since the control circuit board of the flexible display module 120 (i.e., the flexible screen FPC1201 in fig. 14, hereinafter referred to as a screen IC) is fragile, when the plastic film presses the IC, the IC has a great risk of failure, in view of this, the display panel assembly attachment auxiliary device of the present application further includes a circuit protection bracket 500, please refer to fig. 28 and 29 together, fig. 28 is a schematic structural diagram of a state where the circuit protection bracket is fitted with the display panel assembly, fig. 29 is a schematic structural diagram of an embodiment of the circuit protection bracket, and the circuit protection bracket 500 is used for protecting the circuit board of the flexible display panel. Optionally, before the step of providing negative pressure to the negative pressure container through the transmission pipeline, the method may further include: and arranging the circuit protection support in a negative pressure container, and further protecting the circuit board of the flexible display screen.
Optionally, the circuit protection bracket 500 includes a main body portion 510 and a bending portion 520, which are integrally formed, and a circuit board of a flexible display (that is, a Flexible Printed Circuit (FPC) 1201) is disposed in a protection space defined by the main body portion 510 and the bending portion 520. In this embodiment, the circuit protection bracket 500 includes two bending portions 520 respectively located at two opposite ends of the main body portion 510, so as to integrally protect the circuit board of the flexible display screen. Referring to fig. 30, fig. 30 is a partial schematic structural view of a circuit protection bracket and a display screen assembly in a matched state. The circuit protection bracket 500 and the display screen assembly 100 are arranged in the negative pressure container 410 at the same time, and are used for protecting a circuit board of the flexible display screen.
The laminating auxiliary device in this application embodiment through the structure of designing circuit protection support, can be in the negative pressure container to the circuit board protection of flexible display screen.
Referring to fig. 31 and 32 together, fig. 31 is a schematic structural view illustrating a state of the fit-on assisting device of the present application in cooperation with a display screen assembly according to another embodiment, and fig. 32 is a schematic structural view illustrating another view angle of fig. 31; different from the previous embodiment, in this embodiment, the transmission pipeline 420 includes an air suction pipe 421 and a flow guide pipe 422, two ends of the air suction pipe 421 are respectively communicated with the outside of the negative pressure container 410 and the flow guide pipe 422, and the shape of the flow guide pipe 422 is adapted to the cross-sectional shape of the negative pressure container 410. The centralized air suction of the air pipe is changed into the uniform air suction along the sides of the screen group at multiple positions, and the air bubble discharging effect is further improved. The auxiliary attaching device 400 includes two transmission pipelines 420, each of the transmission pipelines 420 includes an air suction pipe 421 and a guide pipe 422; the two transfer lines 420 are respectively disposed at opposite ends of the negative pressure container 410, and can respectively provide negative pressure to the negative pressure container 410 from both ends of the negative pressure container 410.
Optionally, referring to fig. 33 and 34 together, fig. 33 is a schematic structural view of the flow guide tube in the embodiment of fig. 32, and fig. 34 is an enlarged schematic partial structural view at J in fig. 33; the flow guide pipe 422 is connected with the air suction pipe 421 through the connecting end 4220, and the shape of the flow guide pipe 422 is matched with the cross section shape of the inner cavity of the negative pressure container 410, so that the air pipe can uniformly suck air in the inner cavity of the negative pressure container 410 at multiple positions. In some embodiments, the air guiding tube 422 is provided with a plurality of air holes 4221 in the extending direction, thereby increasing the air outlet position.
In this embodiment, by designing the duct structure adapted to the cross-sectional shape of the negative pressure container, the air duct can uniformly suck air at multiple positions along the side of the screen set (or at multiple positions inside the negative pressure container), thereby improving the uniformity of negative pressure generation.
Optionally, referring to fig. 35, fig. 35 is a schematic flowchart of another embodiment of a method for removing bubbles from a display panel assembly. Unlike the previous embodiment, the present embodiment further includes the following steps.
And step M1703, maintaining the pressure for a preset time.
The negative pressure container is provided with negative pressure, pressure maintaining is needed, so that the flexible screen and the glass cover plate are well attached, bubbles between the flexible screen and the glass cover plate can be completely removed, and wrinkles are eliminated simultaneously. The specific preset pressure maintaining time may be 5 minutes, 10 minutes, half an hour, etc., and those skilled in the art may make reasonable adjustments according to the actual pasting conditions, and the specific time is not limited herein.
And step M1704, separating the display screen assembly from the negative pressure container.
In step M1704, the specific manner of separating the display panel assembly from the negative pressure container includes tearing or opening the negative pressure container, and taking out the display panel assembly, thereby completing the flow of the whole method.
The method for removing the bubbles from the display screen assembly provided in the embodiment can enable the flexible screen and the glass cover plate to be better attached through designing the pressure maintaining time, can drive out the bubbles between the flexible screen and the glass cover plate completely, and meanwhile eliminates wrinkles.
The above description is only a part of the embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent devices or equivalent processes performed by the present invention through the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. A laminating auxiliary device for a display screen assembly comprises a glass cover plate and a flexible display screen which are connected in an adhering mode; its characterized in that, laminating auxiliary device includes: a negative pressure container and a transmission pipeline; the negative pressure container is made of a flexible film material and can be wrapped, pressed and attached to two sides of the glass cover plate of the display screen assembly, which are opposite to the flexible display screen; the transmission pipeline is communicated with the negative pressure container and is used for providing negative pressure for the negative pressure container; and then the negative pressure container extrudes the glass cover plate and the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged.
2. The auxiliary attaching device according to claim 1, further comprising a circuit protection bracket inserted in the negative pressure container for protecting a circuit board of the flexible display screen.
3. The auxiliary attaching device of claim 2, wherein the circuit protection bracket comprises a main body portion and a bending portion, the main body portion and the bending portion are integrally formed, and the circuit board of the flexible display screen is disposed in a protection space defined by the main body portion and the bending portion.
4. The fitting assistance device according to claim 1, wherein the transfer line includes an air suction pipe and a flow guide pipe, both ends of the air suction pipe are respectively communicated with the outside of the negative pressure container and the flow guide pipe, and the flow guide pipe has a shape adapted to a cross-sectional shape of the negative pressure container.
5. The fit-assist device according to claim 4, wherein the fit-assist device comprises two transfer lines, each transfer line comprising an air suction pipe and a flow guide pipe; the two transmission pipelines are respectively arranged at two opposite ends of the negative pressure container and can respectively provide negative pressure to the negative pressure container from the two ends of the negative pressure container.
6. The fitting assistance device according to claim 4, wherein the flow guide tube is provided with a plurality of air holes in the extending direction.
7. The fitting assistance device according to claim 1, wherein the negative pressure container is made of a plastic film.
8. A method for attaching a display screen assembly of an attachment assisting device according to any one of claims 1 to 7, the method comprising:
placing the display screen assembly in a negative pressure container; the display screen assembly comprises a glass cover plate and a flexible display screen which are connected in an adhesive mode;
and negative pressure is provided for the negative pressure container through the transmission pipeline, so that the negative pressure container is attached to and pressed on two sides of the glass cover plate, which are opposite to each other, of the flexible display screen, and bubbles between the glass cover plate and the flexible display screen are discharged.
9. The attaching method according to claim 8, further comprising, after the step of supplying negative pressure to the negative pressure container through a transfer pipe, the step of: and maintaining the pressure for a preset time.
10. The attaching method according to claim 8, further comprising, before the step of supplying negative pressure to the negative pressure container through a transfer pipe: and arranging the circuit protection bracket in the negative pressure container, thereby protecting the circuit board of the flexible display screen.
11. The bonding method according to claim 9, further comprising separating a display screen assembly from the sub-atmospheric pressure container after the step of maintaining the pressure for a preset time.
12. The attaching method according to claim 8, wherein the glass cover plate includes a first cover plate portion, a second cover plate portion, and a third cover plate portion of an integral structure; the first cover plate part and the third cover plate part are arranged oppositely, the second cover plate part is of an arc-shaped structure and is used for connecting the first cover plate part and the third cover plate part, and the first cover plate part, the second cover plate part and the third cover plate part are arranged together in an enclosing mode to form a fitting space; the flexible display screen is attached to the first cover plate portion, the second cover plate portion and the third cover plate portion of the glass cover plate in the attaching space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010837727.0A CN114077329A (en) | 2020-08-19 | 2020-08-19 | Auxiliary laminating device and method for display screen assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010837727.0A CN114077329A (en) | 2020-08-19 | 2020-08-19 | Auxiliary laminating device and method for display screen assembly |
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| CN114077329A true CN114077329A (en) | 2022-02-22 |
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| CN202010837727.0A Withdrawn CN114077329A (en) | 2020-08-19 | 2020-08-19 | Auxiliary laminating device and method for display screen assembly |
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| KR20190011405A (en) * | 2017-07-25 | 2019-02-07 | (주) 나인테크 | A method for attaching a flexible display device to a curved window glass |
| KR20200010730A (en) * | 2018-07-23 | 2020-01-31 | 주식회사 제우스 | Display manufacturing apparatus and manufacturing method thereof |
| CN111421835A (en) * | 2020-04-17 | 2020-07-17 | Oppo广东移动通信有限公司 | Bonding method, bonding device, display unit, and electronic apparatus |
| CN211124796U (en) * | 2019-12-31 | 2020-07-28 | 伯恩光学(惠州)有限公司 | Flexible laminating tool |
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| KR20150059566A (en) * | 2013-11-22 | 2015-06-01 | 주식회사 나래나노텍 | Apparatus and Method of Bonding Flexible Display and Curved Cover Element |
| CN107039604A (en) * | 2017-04-18 | 2017-08-11 | 武汉华星光电技术有限公司 | Flexible display panels adhering device and its attaching method |
| KR20190011405A (en) * | 2017-07-25 | 2019-02-07 | (주) 나인테크 | A method for attaching a flexible display device to a curved window glass |
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Application publication date: 20220222 |