CN106814500A - A kind of display module, touch display unit and preparation method thereof - Google Patents

Abstract

Embodiments of the present invention provide a display module, a touch display device and a manufacturing method thereof, which relate to the technical field of touch display and are used to simplify the manufacturing process of the touch display device. The display module includes a display device in which a backlight source and a liquid crystal display panel are assembled through a frame, and a light-shielding tape is attached to the edge of the display device. The edge, the end of the substrate layer is attached to the surface of the liquid crystal display panel on the side away from the backlight through the first adhesive layer. The display module can be used to prepare a touch display device.

Description

Display module, touch display device and manufacturing method thereof

technical field

The present invention relates to the technical field of touch display, in particular to a display module, a touch display device and a manufacturing method thereof.

Background technique

The touch display device is an inductive liquid crystal display device capable of receiving touch signals. The touch display device mainly includes a touch panel and a liquid crystal display module bonded together. There are usually two methods of bonding between the touch panel and the LCD module: full bonding and frame bonding. Among them, the bonding glue is used to bond the touch panel and the middle of the liquid crystal display module together, while The frame sticker is to use the frame sticker glue to bond the outer edge of the touch panel and the liquid crystal display module together. Because the production cost of frame stickers is lower than that of full stickers, frame stickers are now more common.

The existing frame attaching process of the touch display device includes: first, aligning the light-shielding tape with the liquid crystal display module, and attaching the light-shielding tape to the edge area of the liquid crystal display module; Align the module, and stick the word-shaped tape on the above non-display area; finally, align the touch panel and the LCD module, and paste the touch panel and the LCD module through the word-shaped tape combine.

Since the touch display device needs to be aligned multiple times when using the existing frame-attaching process, the above-mentioned frame-attaching process is relatively complicated. In addition, before attaching the word-shaped tape, the non-display area of the LCD module needs to be wiped. Since this process is usually done manually, foreign objects such as fingerprints are likely to be generated between the word-shaped tape and the LCD panel , when the touch panel and the liquid crystal display module are bonded to form a touch display device, the above-mentioned foreign matter will cause display defects on one side of the touch panel, thereby reducing the yield of the touch display device.

Contents of the invention

Embodiments of the present invention provide a display module, a touch display device and a manufacturing method thereof, which are used to simplify the manufacturing process of the touch display device.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

An aspect of the embodiments of the present invention provides a display module, the display module includes a display device assembled from a backlight source and a liquid crystal display panel through a frame, the display module also includes a light-shielding tape, and the light-shielding tape includes: a A base material layer, a first adhesive layer covering the lower surface of the base material layer, and a second adhesive layer located on the upper surface of one end of the base material layer, wherein the base material layer is composed of a light-shielding base material; The base material layer is attached to the edge of the display device through the first adhesive layer, wherein the end of the base material layer is attached to the liquid crystal display panel away from the edge through the first adhesive layer. The surface on the side of the backlight described above.

Optionally, a part of the base material layer other than the end portion is continuously attached to the side wall of the display device and the edge of the lower surface of the display device through the first adhesive layer.

Optionally, the liquid crystal display panel includes an array substrate, a box substrate, and a polarizer disposed outside the box substrate; the end of the substrate layer is adjacent to the polarizer; wherein, the The thickness of the end of the light-shielding tape is greater than or equal to the thickness of the polarizer.

Further optionally, the width of the end portion of the substrate layer is equal to the width of the edge of the liquid crystal display panel.

Optionally, the second adhesive layer is pressure sensitive adhesive.

Optionally, release paper is provided on the surface of the second adhesive layer facing away from the substrate layer.

Another aspect of the embodiments of the present invention provides a touch display device, including a touch panel and any display module as described above; the touch panel is bonded to the display module through a second adhesive layer .

Still another aspect of the embodiments of the present invention provides a method for manufacturing a touch display device, including: tearing off the release paper of the display module as described above; aligning the touch panel with the display module, and placing the The touch panel is attached to the display module through the second adhesive layer.

Optionally, before tearing off the release paper of the display module according to claim 6, the manufacturing method further includes: aligning the light-shielding tape with the display device, and placing the base material layer of the light-shielding tape The end of the base material layer is attached to the edge of the liquid crystal display panel on the side away from the backlight through the first adhesive layer, and the part of the base material layer other than the end is attached to the edge of the base material layer through the first adhesive layer. The side wall of the display device and the edge of the lower surface of the display device.

Further optionally, the liquid crystal display panel includes an array substrate and a box-matching substrate, and the display module further includes a polarizer arranged outside the box-matching substrate; the end of the substrate layer of the light-shielding tape is passed through The first adhesive layer is pasted on the edge of the side of the liquid crystal display panel away from the backlight source, including: contacting the side of the end of the base material layer of the light-shielding tape with the side of the polarizer, and passing the first adhesive layer Attaching the end of the base material layer to the edge of the liquid crystal display panel away from the backlight, so that the end of the base material layer is adjacent to the polarizer.

Embodiments of the present invention provide a display module, a touch display device and a manufacturing method thereof. The display module includes a display device assembled by a backlight source and a liquid crystal display panel through a frame, and a light-shielding tape is attached to the edge of the display device. Specifically, , the substrate layer in the light-shielding tape is attached to the edge of the display device through the first adhesive layer, and the end of the substrate layer is attached to the surface of the liquid crystal display panel on the side away from the backlight through the first adhesive layer. Since the above-mentioned base material layer is composed of a light-shielding base material, the light-shielding tape can shield the light in the edge area of the display device, thereby reducing the light leakage probability of the display module.

On this basis, when the above-mentioned display module is used to make a touch display device, the touch panel and the display module can be aligned, and the touch panel and the display module can be connected through the second adhesive layer in the light-shielding tape. fit. Compared with the manufacturing process of the existing touch display device, since the light-shielding tape includes the second adhesive layer on the upper surface of one end of the base material layer, there is no need to perform the process of aligning and attaching the mouth-shaped tape, thereby reducing The number of alignments further simplifies the manufacturing process of the touch display device. In addition, even if foreign objects such as fingerprints are generated when the liquid crystal display panel is wiped before the light-shielding tape is attached, since the base layer in the light-shielding tape is composed of a light-shielding base material, and the foreign matter is located between the base layer and the liquid crystal display panel Therefore, the base material layer can shield the above-mentioned foreign matter, thereby avoiding the display defect caused by the above-mentioned foreign matter on the touch panel side, and further improving the yield rate of the touch display device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of a display module provided by an embodiment of the present invention;

Fig. 2 is a kind of structural representation of the light-shielding adhesive tape shown in Fig. 1;

Fig. 3 is a schematic structural diagram II of a display module provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram III of a display module provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a touch display device provided by an embodiment of the present invention;

Fig. 6 is another schematic structural view of the light-shielding adhesive tape shown in Fig. 1;

Fig. 7 is a structural schematic diagram 4 of a display module provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another touch display device provided by an embodiment of the present invention;

FIG. 9 is a schematic diagram of a manufacturing method of a touch display device provided by an embodiment of the present invention;

10a-10c are schematic diagrams of the manufacturing process of the touch display device provided by the embodiment of the present invention.

Reference signs:

01-display module; 02-touch display device; 10-liquid crystal display panel; 101-array substrate; 102-box substrate; 103-polarizer; 20-backlight; 30-frame; Back panel; 40-display device; 50-shading tape; 51-substrate layer; 52-first adhesive layer; 53-second adhesive layer; 54-release paper; 60-touch panel; 70-black vinyl ; 71-adhesive; 72-support frame; 73-cover plate.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the present invention.

An embodiment of the present invention provides a display module 01 as shown in FIG. 1 , including a display device 40 assembled with a backlight (English name: BackLight Unit, BLU for short) 20 and a liquid crystal display panel 10 via a frame 30 . The display module 01 also includes a light-shielding adhesive tape 50. As shown in FIG. The second adhesive layer 53 on the upper surface. Among them, the base layer 51 is composed of a light-shielding base material.

On this basis, as shown in FIG. 1 , the substrate layer 51 is attached to the edge S of the display device 40 through the first adhesive layer 52, wherein the end A of the substrate layer 51 is attached to the edge S of the display device 40 through the first adhesive layer 52. The surface of the liquid crystal display panel 10 facing away from the backlight 20 .

It should be noted that the first and first substrate layers 51 mean that the above-mentioned light-shielding adhesive tape 50 only includes one layer of substrate, rather than limiting the types of materials constituting the substrate layer 51 . For example, a substrate layer 51 can be formed by coating a black pigment on a tissue paper layer, or it can also be made of PET (English: Polyethylene terephthalate, PET for short, Chinese: polyethylene terephthalate) material and black ink. Mix to form a substrate layer 51 .

Second, the display device 40 includes a display area and a non-display area. It is clear to those skilled in the art that the edge S of the display device 40 is included in the non-display area of the display device 40. For example, the edge S of the display device 40 is the display area. The device 40 is located in a portion of the non-display area. Since the display device 40 is a three-dimensional structure, the above-mentioned edge S is also a three-dimensional structure, and the surface of the above-mentioned edge S may include a part where the light-emitting surface of the display device 40 is located in the non-display area, a portion where the lower surface opposite the light-exit surface is located in the display area, and On the side wall between the light-emitting surface and the lower surface, the surface of the above-mentioned edge S can be used for affixing the light-shielding tape 50 . At this time, the end A of the substrate layer 51 is attached to the surface of the liquid crystal display panel 10 facing away from the backlight 20 through the first adhesive layer 52 , that is, the part where the light emitting surface of the display device 40 is located in the non-display area.

Based on this, the display module 01 includes a display device 40 assembled from a backlight 20 and a liquid crystal display panel 10 through a frame 30 , and a light-shielding tape 50 is attached to the edge of the display device 40 , specifically, the base material layer 51 in the light-shielding tape 50 The edge S of the display device 40 is attached to the edge S of the display device 40 through the first adhesive layer 52 , and the end A of the substrate layer 51 is attached to the surface of the liquid crystal display panel 10 facing away from the backlight 20 through the first adhesive layer 52 . Since the base material layer 51 is made of a light-shielding base material, the light-shielding tape 50 can shield the light in the edge S region of the display device 40 , thereby reducing the light leakage probability of the display module 01 .

In addition, the above-mentioned structure of the frame 30 is only an embodiment of the present invention, rather than limiting the structure of the frame 30 . For example, the frame 30 may include a plastic frame (English name: Bezel) 31 and a back plate (English name: Frame) 32 as shown in FIG.

On this basis, in order to further improve the light shielding effect of the light-shielding tape 50 on the edge S area of the display device 40, preferably as shown in FIG. The layer 52 is attached to the sidewall of the display device 40 and the edge of the lower surface of the display device 40 in a continuous manner.

Based on this, the light-shielding tape 50 can not only block the light from the side of the backlight 20 facing away from the liquid crystal display panel 10, but also block the light from the edge area of the liquid crystal display panel 10, thereby further reducing the light leakage probability of the display module 01.

In addition, as shown in FIG. 4 , the liquid crystal display panel 10 includes an array substrate (English name: Thin FilmTransistor Glass) 101, a box-aligning substrate 102, and a polarizer (English name: Color Filter Polarizer) arranged outside the box-aligning substrate 102. 103 (hereinafter referred to as the upper polarizer), and a liquid crystal layer (not shown in the figure) arranged between the array substrate 101 and the cell substrate 102 . In addition, the display module 01 further includes a polarizer (English name: Thin Film Transistor Polarizer) (hereinafter referred to as the lower polarizer) disposed outside the array substrate 101 . Wherein, the light in the display module 01 exits from the upper polarizer.

For example, the box-to-cell substrate 102 may be a color filter substrate. Usually, the substrate of the color filter substrate may be glass. In this case, the color filter substrate may be called CF Glass (English full name: Color Filter Glass). As another example, the array substrate 101 may be a COA (English full name: Color Filter On Array) substrate.

In this case, in order to further prevent light from exiting from the non-display area on the light emitting surface side of the liquid crystal display panel 10 , preferably, the end A of the base material layer 51 is adjacent to the polarizer 103 .

It should be noted that the end A of the substrate layer 51 is adjacent to the polarizer 103 means that the side of the end A of the substrate layer 51 is only in contact with the side of the polarizer 103 and does not overlap the side of the polarizer 103. the upper surface, so as to prevent the light-shielding tape 50 from affecting the light emitted from the display area on the side of the light-emitting surface. In this way, the light-shielding tape 50 can block the light emitted from the non-display area on the side of the light-emitting surface of the liquid crystal display panel 10 , thereby reducing the probability of light leakage in the display device 40 .

On this basis, when the above-mentioned display module 01 is used to make the touch display device 02 as shown in FIG. The layer 53 bonds the touch panel 60 and the display module 01 . Compared with the manufacturing process of the existing touch display device 02, since the light-shielding tape 50 includes the second adhesive layer 53 located on the upper surface of one end of the base material layer 51, there is no need to perform alignment and attachment of the word-shaped tape , thereby reducing the number of alignments, and further simplifying the manufacturing process of the touch display device 02 . In addition, even before the light-shielding tape 50 is attached, when the liquid crystal display panel 10 is wiped when foreign matter P such as fingerprints as shown in FIG. The foreign matter P is located between the base material layer 51 and the liquid crystal display panel 10, so the base material layer 51 can shield the foreign matter P, thereby avoiding the display defect caused by the foreign matter P on the light emitting side of the touch panel 60, and further improving the The yield rate of the touch display device 02.

On this basis, in order to ensure that the display module 01 and the touch panel 60 can be bonded through the second adhesive layer 53, it is further preferred that, as shown in FIG. 5, the thickness H of the end A of the light-shielding tape 50 is greater than The thickness L of the sheet 103 may be equal to the thickness L of the polarizer 103 . This ensures that when the touch display device 02 is formed, the touch panel 60 can be attached to the display module 01 through the second adhesive layer 53 .

Further, in order to improve the bonding effect between the display module 01 and the touch panel 60 , preferably, as shown in FIG. 4 , the width T of the end A of the substrate layer 51 is equal to the width W of the edge of the liquid crystal display panel 10 . In this way, since the upper surface of the end A of the base layer 51 is provided with the second adhesive layer 53, and the width T of the end A of the base layer 51 is equal to the width W of the edge of the liquid crystal display panel 10, the touch The area where the panel 60 is in contact with the edge of the liquid crystal display panel 10 is provided with a second adhesive layer 53 , so as to improve the bonding effect between the liquid crystal display panel 10 and the touch panel 60 .

In addition, preferably, the above-mentioned second adhesive layer 53 is pressure-sensitive adhesive. Pressure-sensitive adhesives have good cushioning properties and barrier properties to water vapor. In this case, when bonding the touch panel 60 and the display module 01 to form the touch display device 02, since the second adhesive layer 53 is located between the touch panel 60 and the display module 01, the pressure-sensitive adhesive can A certain buffer is provided between the touch panel 60 and the display module 01 to reduce the possibility of the touch display device 02 being broken. In addition, the pressure-sensitive adhesive can prevent water vapor from entering the display module 01 from the gap between the touch panel 60 and the display module 01 .

It should be noted that what is described above is the structure in which the light-shielding tape 50 is applied in the manufactured display module 01 . Before attaching the light-shielding tape 50 on the display device 40, in order to avoid the light-shielding tape 50 from being polluted, the light-shielding tape 50 can be shown in FIG. The pattern paper 54, the display module 01 with the light-shielding tape 50 attached at this time is shown in FIG. 7 . In this case, the release paper 54 of the display module 01 is removed, and the touch panel 60 and the display module 01 can be attached through the second adhesive layer 53 . Therefore, before the display module 01 is used to form the touch display device 02 , the release paper 54 can protect the second adhesive layer 53 from contamination, so as to improve the yield of the formed touch display device 02 .

An embodiment of the present invention provides a touch display device 02 as shown in FIG. Laminate with the display module 01 through the second adhesive layer 53 . The above-mentioned display module 01 has the same structure and beneficial effects as the display module 01 provided in the foregoing embodiments. Since the foregoing embodiments have described the structure and beneficial effects of the display module 01 in detail, no further details are given here. .

It should be noted that, the present invention does not limit the type of the touch panel 60 . For example, the touch panel 60 may be OGS (English full name: One Glass Sloution, Chinese name: One Glass Sloution).

On this basis, as shown in FIG. 8 , the touch display device 02 also includes a support frame (System Holder) 72 and a cover plate 73 (A-Cover), wherein the support frame 72 and the back plate 32 are passed through an adhesive (English name: Adhesive) 71 fixed.

An embodiment of the present invention provides a method for manufacturing a touch display device 02, as shown in FIG. 9 , the method includes:

Step S101 , as shown in FIG. 10 b , tear off the release paper 54 (not shown in FIG. 10 b ) of the display module 01 as shown in FIG. 7 .

It should be noted that, the display module 01 mentioned above is the display module 01 provided in the foregoing embodiments with the light-shielding tape 50 including the release paper 54 attached thereto.

Step S102, as shown in FIG. 10c, align the touch panel 60 with the display module 01, and attach the touch panel 60 to the display module 01 through the second adhesive layer 53 (not shown in FIG. 10c) .

Based on this, when manufacturing the touch display device 02 , it is only necessary to align the touch panel 60 with the display module 01 , and attach the touch panel 60 to the display module 01 through the second adhesive layer 53 in the light-shielding tape 50 . combine. Compared with the manufacturing process of the existing touch display device 02, since the light-shielding tape 50 includes the second adhesive layer 53 located on the upper surface of one end of the base material layer 51, there is no need to perform alignment and attachment of the word-shaped tape , thereby reducing the number of alignments, and further simplifying the manufacturing process of the touch display device 02 . In addition, even before the light-shielding tape 50 is attached, when the liquid crystal display panel 10 is wiped when foreign matter P such as fingerprints is generated, since the base material layer 51 in the light-shielding tape 50 is composed of a light-shielding base material, and the above-mentioned foreign matter P is located on the base material layer 51 and the liquid crystal display panel 10, so the base material layer 51 can shield the above-mentioned foreign matter P, thereby avoiding the display defect caused by the above-mentioned foreign matter P on the light-emitting side of the touch panel 60, and further improving the performance of the manufactured touch display device 02. yield.

On this basis, before performing the above step S101, the above-mentioned manufacturing method of the touch display device 02 also includes a method of attaching the light-shielding tape 50 to the display device 40, specifically: aligning the light-shielding tape 50 with the display device 40, so as to Find the initial position where the light-shielding tape 50 is attached, and attach the end A of the base material layer 51 of the light-shielding tape 50 to the edge of the side of the liquid crystal display panel 10 away from the backlight 20 through the first adhesive layer 52, and place the base material The part of the layer 51 except the end A is attached to the side wall of the display device 40 and the edge of the lower surface of the display device 40 through the first adhesive layer 52 in succession.

In this way, as shown in FIG. 10a, the light-shielding tape 50 is pasted on the edge of the display device 40. At this time, the light-shielding tape 50 can not only block the outgoing light from the side of the backlight 20 away from the liquid crystal display panel 10, but also can Light in the non-display area of the liquid crystal display panel 10 is shielded, thereby reducing the probability of light leakage from the display module 01 .

In addition, when the liquid crystal display panel 10 includes an array substrate 101, a box-matching substrate 102, and a polarizer 103 disposed outside the box-matching substrate 102 as shown in FIG. 5 , the above step S102 includes:

As shown in Figure 4, the side of the end A of the base material layer 51 of the light-shielding adhesive tape 50 is in contact with the side of the polarizer 103, and the end of the base material layer 51 is attached to the liquid crystal display through the first adhesive layer 52. The edge of the panel 10 facing away from the backlight 20 makes the end A of the substrate layer 51 adjacent to the polarizer 103 .

In this case, the light-shielding tape 50 can shield the light emitted by the display device 40 from areas other than the polarizer 103 , thereby reducing the probability of light leakage in the display device 40 .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. the display device that a kind of display module, including backlight and liquid crystal display panel are assembled into through framework, it is characterised in that The display module also includes shading rubber belt, and the shading rubber belt includes：One substrate layer, cover the substrate layer lower surface the One glue-line, and positioned at the second glue-line of the one end upper surface of the substrate layer, wherein, the substrate layer is by shading base material structure Into；

The substrate layer is attached at the edge of the display device by first glue-line, wherein, the substrate layer it is described End is attached to surface of the liquid crystal display panel away from the backlight side by first glue-line.

2. display module according to claim 1, it is characterised in that part of the substrate layer in addition to the end, Postponed by first glue-line edge of the side wall and the display device lower surface that are attached to the display device.

3. display module according to claim 1, it is characterised in that the liquid crystal display panel includes array base palte, right Box substrate and it is arranged on the polaroid on the outside of box substrate；

The end of the substrate layer abuts with the polaroid；Wherein, the thickness of the end of the shading rubber belt be more than or Equal to the thickness of the polaroid.

4. display module according to claim 3, it is characterised in that the width of the end of the substrate layer is equal to institute State the width at the edge of liquid crystal display panel.

5. display module according to claim 1, it is characterised in that second glue-line is pressure sensitive adhesive.

6. the display module according to claim any one of 1-5, it is characterised in that second glue-line deviates from the base material One side surface of layer is provided with release liners.

7. a kind of touch display unit, it is characterised in that including the display described in contact panel and claim any one of 1-5 Module；

The contact panel is fitted by the second glue-line with the display module.

8. a kind of preparation method of touch display unit, it is characterised in that including：Tear the display module described in claim 6 off Release liners；

Contact panel is aligned with the display module, and the contact panel is entered by the second glue-line with the display module Row laminating.

9. preparation method according to claim 8, it is characterised in that in the display mould torn off described in claim 6 Before the release liners of group, the preparation method also includes：

Shading rubber belt and display device are aligned, and the end of the substrate layer of the shading rubber belt is attached to by the first glue-line Liquid crystal display panel deviates from the edge of backlight side, and the part by the substrate layer in addition to the end, by described First glue-line is postponed the edge of the side wall and display device lower surface that are attached to the display device.

10. preparation method according to claim 9, it is characterised in that the liquid crystal display panel include array base palte and To box substrate, the display module also includes being arranged on the polaroid on the outside of box substrate；

The end of the substrate layer by shading rubber belt is attached to liquid crystal display panel away from backlight side by the first glue-line Edge, including：

The side of the end of the substrate layer of the shading rubber belt is in contact with the side of the polaroid, and by the first glue-line The end of the substrate layer is attached to edge of the liquid crystal display panel away from backlight side, to cause the institute of the substrate layer End is stated to be abutted with the polaroid.