CN218524980U

CN218524980U - Display screen assembly

Info

Publication number: CN218524980U
Application number: CN202223015978.4U
Authority: CN
Inventors: 黄彦荃; 赵泳波
Original assignee: Tolyy Optronics Co ltd
Current assignee: Tolyy Optronics Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-02-24
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to a display screen assembly, including LCD screen module, bearer bar, functional panel, first tie coat and second tie coat. The protection frame covers the peripheral side face of the liquid crystal screen module, the first bonding layer is attached to one side of the liquid crystal screen module in the height direction, and a mounting gap surrounding the first bonding layer is formed in the height direction between one side of the first bonding layer, which is far away from the liquid crystal screen module, and the same side of the protection frame in the height direction; the second tie coat fills up pastes dress clearance, the mutual adhesion of second tie coat and first tie coat, and the one side that the LCD screen module was kept away from to the one side that the guard frame was kept away from to the second tie coat and first tie coat flushes each other, one side that the LCD screen module was kept away from to the functional panel laminating in first tie coat and second tie coat, so that the LCD screen module pastes dress each other with the functional panel, make the peripheral no longer existence of the function panel all around collapse, thereby the full laminating and the bubble-free production when having ensured that the functional panel pastes the dress on the LCD screen module.

Description

Display screen assembly

Technical Field

The utility model relates to a display screen equipment technical field especially relates to a display screen subassembly.

Background

In the current technical field of display screens, the spliced display screen as a high-end commercial display product has the characteristics of long service life, wide viewing angle, high resolution and the like, and can bring a brand-new visual experience effect for users. In the off-the-shelf design of concatenation formula display screen, the display screen has extremely narrow frame, and its purpose mainly is in order to further optimize the whole visual effect of super large screen, and on the existing market, the thinner product of display panel's frame width has been had to can bring better experience for the user.

The spliced display screen is generally formed by splicing a functional panel and a liquid crystal display, generally, the liquid crystal display is supported by a frame, and then the functional panel is pasted on the upper sides of the liquid crystal display and the frame. However, in the assembling process of the tiled display screen, there are processing errors and assembling errors of the display panel, which often cause that when the frame is installed on the peripheral edge of the liquid crystal screen, there is a certain height difference between the liquid crystal screen and the frame, when the functional panel is installed on the upper surface of the liquid crystal screen, the peripheral edge of the functional panel can collapse downwards, so that the attaching air bubbles are formed on the peripheral edge of the functional panel, even if the air bubbles are removed by defoaming treatment after the attaching is completed, the air bubbles are only removed temporarily, and the rebounding air bubbles also exist within 2 hours after the glue between the functional panel and the liquid crystal screen is aged, so that the generation of the air bubbles cannot be fundamentally eliminated.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a display screen assembly without bubbles after mounting, aiming at the problem that when the spliced display screen is spliced, the frame and the liquid crystal screen have a height difference, so that the functional panel is easy to generate bubbles when being mounted on the liquid crystal screen.

According to one aspect of the present application, there is provided a display screen assembly comprising:

a liquid crystal screen module;

the protection frame covers the peripheral side surfaces of the liquid crystal screen module;

the first bonding layer is attached to one side of the liquid crystal screen module in the height direction, and a mounting gap surrounding the first bonding layer is formed between one side of the first bonding layer, which is far away from the liquid crystal screen module, and the same side of the protection frame in the height direction;

the second bonding layer is filled in the mounting gap, the second bonding layer is adhered to the first bonding layer, and one side of the second bonding layer, which is far away from the protective frame, is flush with one side of the first bonding layer, which is far away from the liquid crystal display module; and

and the functional panel is attached to one side, away from the liquid crystal screen module, of the first bonding layer and the second bonding layer, so that the liquid crystal screen module and the functional panel are attached to each other.

In one embodiment, a dimension of a side of the liquid crystal panel module close to the functional panel from a side of the protective frame far from the functional panel is larger than a dimension of the protective frame in the height direction, a height difference is formed between the liquid crystal panel module and the protective frame in the height direction, and a sum of the height difference and the dimension of the first adhesive layer in the height direction is equal to a dimension of the mounting gap in the height direction.

In one embodiment, a dimension of a side of the liquid crystal panel module close to the functional panel from a side of the protective frame far from the functional panel is smaller than a dimension of the protective frame in the height direction, a height difference is formed between the liquid crystal panel module and the protective frame in the height direction, the height difference is smaller than a dimension of the first adhesive layer in the height direction, and a difference between the dimension of the first adhesive layer in the height direction and the height difference is equal to a dimension of the mounting gap in the height direction.

In one embodiment, the height difference is 0.4mm, and the dimension of the first adhesive layer in the height direction is greater than 0.4mm.

In one embodiment, in the direction in which the functional panel points to the liquid crystal screen module, the liquid crystal screen module comprises a liquid crystal panel, a light guide film and a backlight plate which are sequentially connected in a stacked manner, the peripheral sides of the liquid crystal panel, the light guide film and the backlight plate jointly form the peripheral sides of the liquid crystal screen module, and the first adhesive layer is attached to one side, away from the backlight plate, of the liquid crystal panel.

In one embodiment, the protection frame includes a frame body and a sealing layer, the frame body covers peripheral side surfaces of the liquid crystal screen module and supports a partial surface of the liquid crystal screen module on a side away from the functional panel, and the sealing layer covers an outer surface of the frame body and a partial outer surface of the liquid crystal screen module.

In one embodiment, the sealing layer includes a fixing portion and two bent portions, the fixing portion covers an outer side surface of the frame, each bent portion is formed by extending one side of the fixing portion in the height direction toward a direction close to the liquid crystal panel module, and each bent portion covers one side surface of the frame in the height direction and closes a gap formed between the inner side surface of the frame and the outer side surface of the liquid crystal panel module.

In one embodiment, the sealing layer is mylar tape.

In one embodiment, the first bonding layer is a TOCA glue, and the TOCA glue is in a semi-solid state.

In one embodiment, the second adhesive layer is an AB glue that is in a fluid state prior to curing.

Above-mentioned display screen subassembly has following technological effect:

through laminating first tie coat in LCD screen module one side in the direction of height, one side that makes first tie coat keep away from the LCD screen module is formed with a subsides dress clearance that encircles in first tie coat with the same one side of protective frame in the direction of height, utilize the second tie coat to fill up subsides dress clearance simultaneously, make the medial surface of second tie coat and the mutual adhesion of lateral surface of first tie coat, when the function panel is installed in the top of LCD screen module, the function panel laminating is in the one side that the LCD screen module was kept away from to first tie coat and second tie coat, because the yielding characteristic of softness that first tie coat and second tie coat have, first tie coat and second tie coat can guarantee that one side that the LCD screen module was kept away from to first tie coat and the one side that the protective frame was kept away from to the second tie coat each other when receiving the applied pressure of function panel simultaneously, when making to paste the upper surface of function panel to the LCD screen, the all edges of function panel no longer have the collapse, thereby ensured that the function panel is installed and is laminated completely on the LCD screen module and no bubble produces.

Drawings

Fig. 1 is a schematic cross-sectional view of a display panel assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of region H of FIG. 1;

fig. 3 is a schematic cross-sectional view of a display panel assembly according to another embodiment of the present invention;

FIG. 4 is an enlarged schematic view of region I of FIG. 3;

fig. 5 is a schematic view of the display screen assembly injected into the second bonding layer by the glue dispensing gun.

Description of reference numerals:

10. a display screen assembly; 100. a liquid crystal screen module; 101. a mounting gap; 110. a liquid crystal panel; 120. a light directing film; 130. a backlight plate; 200. a functional panel; 300. a protective frame; 310. a frame body; 320. a sealing layer; 321. a fixed part; 322. a bent portion; 400. a first adhesive layer; 500. a second adhesive layer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a display screen assembly, this display screen assembly are used for showing electronic information to supply the user to watch and discern.

The following describes the structure of the display panel assembly in the present application by taking the display panel assembly as a tiled display panel as an example, and the present embodiment is only used as an example and does not limit the technical scope of the present application. It is understood that, in other embodiments, the display screen assembly of the present application is not limited to a tiled display screen, but may be any other type of display screen, and is not limited herein.

A preferred embodiment of the display screen assembly is described below with reference to fig. 1-5.

Fig. 1 to 5 show a display screen assembly 10 provided by the present application, which is a tiled display screen, and includes a liquid crystal display module 100, a functional panel 200, a protection frame 300, and a first adhesive layer 400, wherein the functional panel 200 is attached to one side of the liquid crystal display module 100 in a height direction (i.e., a direction indicated by an arrow in the figure) through the first adhesive layer 400, the liquid crystal display module 100 is configured to display electronic information for a user to view, and the functional panel 200 is configured to allow the user to perform a man-machine interaction operation on electronic image content displayed in the liquid crystal display module 100, for example, a touch screen (TP TouchPad) or the like. The protection frame 300 covers the peripheral side of the liquid crystal screen module 100 and supports a side portion surface of the liquid crystal screen module, which is far away from the functional panel 200, so as to protect the liquid crystal screen module 100, thereby preventing the liquid crystal screen module from being impacted or collided in the transportation process.

In some embodiments, as shown in fig. 1 to 4, the lcd panel module 100 includes a rectangular thin plate-shaped lcd panel 110, a light guide film 120 and a backlight panel 130, the lcd panel 110, the light guide film 120 and the backlight panel 130 are sequentially stacked and connected in a direction from the functional panel 200 to the lcd panel module 100, peripheral sides of the lcd panel 110, the light guide film 120 and the backlight panel 130 jointly form a peripheral side of the lcd panel module 100, and the first adhesive layer 400 is attached to a side of the lcd panel 110 away from the backlight panel 130. The backlight plate 130 functions as a light source for emitting light in the lcd module 100; the light guide film 120 is used for diffusing, intensifying and guiding light emitted from the backlight plate 130; the liquid crystal panel 110 is used for displaying electronic information under the action of light emitted by the backlight plate 130, the liquid crystal panel 110 is preferably a TFT (Thin Film Transistor) -FOG (Film On Glass) screen, and a flexible circuit board is carried On the liquid crystal panel 110.

The protection frame 300 includes a frame 310 and a sealing layer 320, the frame 310 covers the peripheral side of the lcd module 100 and supports a partial surface of the lcd module 100 away from the functional panel 200 (i.e. a partial surface supporting the bottom surface of the backlight 130), the frame 310 may be made of metal or plastic, the frame 310 is detachably connected to the lcd module 100, so that a gap is formed between the frame 310 and the outer side of the lcd module 100, and the sealing layer 320 covers the outer surface of the frame 310 and a partial outer surface of the lcd module 100, so as to seal the gap formed between the frame 310 and the lcd module 100, thereby preventing dust or liquid from falling into the gap, and avoiding affecting the normal use of the display module 10.

Preferably, the sealing layer 320 is a mylar tape, which is also called a PET polyester film tape, and compared with a common sealing tape, the mylar tape has stable size, flatness, excellent tear strength, heat and cold resistance, moisture and water resistance, chemical corrosion resistance, super-strong insulating property, and excellent electrical, mechanical, heat and chemical resistance, and thus is widely applied to a display screen and can play a good role in protecting the display screen.

Specifically, as shown in fig. 2 and 4, the sealing layer 320 includes a fixing portion 321 and two bending portions 322, the fixing portion 321 covers the outer side surface of the frame 310, each bending portion 322 is formed by extending one side of the fixing portion 321 in the height direction toward the direction close to the liquid crystal panel module 100, and each bending portion 322 covers one side surface of the frame 310 in the height direction and closes a gap formed between the inner side surface of the frame 310 and the outer side surface of the liquid crystal panel module 100.

As described in the background art, since the liquid crystal panel module 100 and the protective frame 300 inevitably have a processing error or an assembly error, respectively, the surface of the liquid crystal panel 110 in the liquid crystal panel module 100 on the side away from the backlight plate 130 in the height direction and the surface of the sealing layer 320 in the protective frame 300 on the same side (i.e., the upper side) in the height direction may not be completely flush. In one embodiment, as shown in fig. 2, a dimension a (hereinafter referred to as dimension a) of a side of the lcd panel module 100 close to the functional panel 200 (i.e., an upper side of the lcd panel module 100) from a side of the protective frame 300 away from the functional panel 200 (i.e., a lower side of the protective frame 300) is greater than a dimension B (hereinafter referred to as dimension B) of the protective frame 300 in a height direction. In another embodiment, as shown in FIG. 4, dimension A is less than dimension B. Therefore, a height difference C is formed between the two, and the height difference C is relatively small, and in one embodiment, the size of the height difference C is 0.4mm. And the dimension D of the first adhesive layer 400 in the height direction may not be guaranteed to be exactly 0.4mm. Preferably, the first Adhesive layer 400 is TOCA (Thermal-mechanical Clear Adhesive) glue, which is semi-solid, has high light transmittance, good ductility, and fluidity after heating, can prevent springback and warpage of the material, and has strong self-adhesion and high Adhesive strength, and can firmly adhere the functional panel 200 and the liquid crystal panel 110, so that the functional panel 200 and the liquid crystal panel 110 are bonded more stably. Typically, the dimension D of the first adhesive layer 400 (i.e., the TOCA paste) in the height direction is greater than 0.4mm, preferably 0.7mm.

Therefore, no matter whether the dimension a is larger or smaller than the dimension B, the side of the first adhesive layer 400 away from the lcd panel module 100 and the same side of the protective frame 300 in the height direction (i.e., the upper side of the sealing layer 320) form a mounting gap 101 surrounding the first adhesive layer 400 in the height direction. When the dimension a is larger than the dimension B, the sum of the height difference C formed by the liquid crystal panel module 100 and the protective frame 300 and the dimension D of the first adhesive layer 400 in the height direction is equal to the dimension E of the mounting gap 101 in the height direction. When the dimension a is smaller than the dimension B, the difference between the dimension D of the first adhesive layer 400 in the height direction and the height difference C is equal to the dimension E of the mounting gap 101 in the height direction.

This causes the peripheral edge of the functional panel 200 to collapse downward when the functional panel 200 is attached to the liquid crystal panel module 100 by the first adhesive layer 400, thereby forming an attachment bubble at the peripheral edge of the functional panel 200.

In order to solve this problem, the inventors of the present application have made intensive studies to add a second adhesive layer to the display screen assembly 10, and as shown in fig. 1 to 4, the second adhesive layer is injected into the display screen assembly 10 and filled in the mounting gap 101. The second adhesive layer is preferably an AB adhesive (i.e., a two-liquid hybrid curing adhesive, one liquid is a present adhesive, the other liquid is a curing agent, and the two liquids can be cured after mixing), which is in a flowing state before curing, and has the greatest characteristic of strong adhesion, so that the second adhesive layer easily fills the mounting gap 101, surrounds the first adhesive layer 400, and adheres to the first adhesive layer 400.

So, when function panel 200 pastes the dress on LCD screen module 100, first tie coat 400 and second tie coat receive the pressure that function panel 200 applyed simultaneously, because first tie coat 400 all has soft yielding's characteristic with the second tie coat, one side that LCD screen module 100 was kept away from to first tie coat 400 flushes each other with one side that protective frame 300 was kept away from to the second tie coat, and because first tie coat 400 all has viscidity with the second tie coat, the lateral surface all around of first tie coat 400 and the medial surface all around of second tie coat adhere to each other, make function panel 200 and LCD screen module 100 paste can seamless full laminating when pasting, function panel 200's the edge all around no longer has the collapse, it does not have the bubble to produce when having guaranteed that function panel 200 pastes the dress on LCD screen module 100.

With reference to fig. 1 to 5, the display panel assembly 10 is assembled by the following steps:

firstly, mounting a protection frame 300 on the liquid crystal screen module 100, enabling the protection frame 300 to cover the peripheral side surfaces of the liquid crystal screen module 100 and supporting the area, close to the peripheral edge, of the bottom surface of the liquid crystal screen module 100;

secondly, a first bonding layer 400 is bonded on the upper surface of the liquid crystal display module 100, and a bonding gap 101 surrounding the periphery of the first bonding layer 400 is formed between the first bonding layer 400 and the frame;

thirdly, a glue dispensing gun is used for injecting a second bonding layer around the periphery of the first bonding layer 400, so that the second bonding layer is filled in the mounting gap 101 and fills the mounting gap 101, taking a 15.6-inch liquid crystal display module 100 as an example, the working parameters of the step are shown in table one:

watch 1

Dispensing procedure	15.6 cun
		Atmospheric pressure set point	0.5mpa
Width/glue speed	≥2mm//60mm/min
		Needle head	5#

At this time, the second adhesive layer and the first adhesive layer 400 are adhered to each other;

finally, the functional panel 200 is attached to the upper surfaces of the first adhesive layer 400 and the second adhesive layer, so that the functional panel 200 and the liquid crystal display module 100 are fully attached without generating bubbles, thereby completing the assembly of the display panel assembly 10.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the technical features should be considered as the scope of the present description.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A display screen assembly, comprising:

a liquid crystal screen module;

the first bonding layer is attached to one side of the liquid crystal screen module in the height direction, and an attachment gap surrounding the first bonding layer is formed between one side of the first bonding layer, which is far away from the liquid crystal screen module, and the same side of the protection frame in the height direction;

2. The display screen assembly of claim 1, wherein a distance between a side of the lcd panel module close to the functional panel and a side of the protective frame away from the functional panel is greater than a dimension of the protective frame in the height direction, a height difference is formed between the lcd panel module and the protective frame in the height direction, and a sum of the height difference and the dimension of the first adhesive layer in the height direction is equal to a dimension of the mounting gap in the height direction.

3. The display panel assembly of claim 1, wherein a distance between a side of the lcd panel assembly close to the functional panel and a side of the protective frame away from the functional panel is smaller than a dimension of the protective frame in the height direction, a height difference is formed between the lcd panel assembly and the protective frame in the height direction, the height difference is smaller than a dimension of the first adhesive layer in the height direction, and a difference between the dimension of the first adhesive layer in the height direction and the height difference is equal to a dimension of the mounting gap in the height direction.

4. A display screen assembly according to claim 2 or 3, wherein the height difference is 0.4mm and the dimension of the first adhesive layer in the height direction is greater than 0.4mm.

5. The display screen assembly according to claim 1, wherein the liquid crystal screen module comprises a liquid crystal panel, a light guide film and a backlight plate which are sequentially connected in a stacked manner in a direction in which the functional panel points to the liquid crystal screen module, peripheral sides of the liquid crystal panel, the light guide film and the backlight plate together form a peripheral side of the liquid crystal screen module, and the first adhesive layer is attached to a side of the liquid crystal panel away from the backlight plate.

6. The display screen assembly of claim 1, wherein the protective frame comprises a frame body and a sealing layer, the frame body covers the peripheral side surface of the liquid crystal screen module and supports a part of the surface of the liquid crystal screen module on the side away from the functional panel, and the sealing layer covers the outer surface of the frame body and a part of the outer surface of the liquid crystal screen module.

7. The display panel assembly of claim 6, wherein the sealing layer includes a fixing portion and two bent portions, the fixing portion covers an outer side surface of the frame, each bent portion is formed by extending one side of the fixing portion in the height direction toward a direction close to the liquid crystal panel module, and each bent portion covers one side surface of the frame in the height direction and closes a gap formed between the inner side surface of the frame and the outer side surface of the liquid crystal panel module.

8. The display screen assembly of claim 6, wherein the sealing layer is mylar tape.

9. The display screen assembly of claim 1, wherein the first adhesive layer is a TOCA glue, the TOCA glue being in a semi-solid state.

10. The display screen assembly of claim 1, wherein the second adhesive layer is an AB glue that is in a fluid state prior to curing.