CN210534480U

CN210534480U - TFT subassembly and LCM display module assembly

Info

Publication number: CN210534480U
Application number: CN201921425391.6U
Authority: CN
Inventors: 方雷锋; 范浩雷
Original assignee: Fuzhou Lianchuang Electronic Co Ltd
Current assignee: Fuzhou Lianchuang Electronic Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-15
Anticipated expiration: 2029-08-29

Abstract

The utility model provides a TFT subassembly and LCM display module assembly, this TFT subassembly include the TFT body with the bubble silver of laminating on the TFT body, the bubble silver is located the corner region of TFT body, and along the adjacent both edges of TFT body laminate mutually, it has the silicone adhesive layer to coat on the TFT body, the silicone adhesive layer sets up the bubble silver is kept away from one side at TFT body edge, the bubble cotton is used for the restriction the silicone adhesive layer overflows the boundary of TFT body. The utility model discloses in, when carrying out LCM full laminating, this silicone glue film can play the cushioning effect of TFT body atress to the ability of anti fracture under the external force impact of TFT body has been strengthened.

Description

TFT subassembly and LCM display module assembly

Technical Field

The utility model relates to the field of electronic technology, especially, relate to a TFT subassembly and LCM display module assembly.

Background

The existing touch screen is formed by attaching a TP (touch pad) and an LCM (liquid crystal module) together through a frame attaching process or a full attaching process. The full-lamination process has the advantages of high yield, good display effect and the like, and gradually replaces the traditional frame lamination process.

The lcm (LCD module), i.e. the LCD display module, generally includes a TFT layer, a backlight layer disposed below the TFT layer, and a cover plate disposed above the TFT layer. Since the entire TFT layer is generally made of glass, the strength of the glass is low, and particularly, the glass used for the TFT layer is usually very thin, so that the impact strength and the bending strength of the entire TFT layer are poor. Therefore, when LCM full lamination is performed in the prior art, the TFT layer is easy to break when being impacted by external force, and the use of the product is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a TFT device and an LCM display module, which are capable of easily breaking a TFT layer when the LCM is fully attached.

The utility model provides a TFT subassembly, include the TFT body with the bubble silver of laminating on the TFT body, the bubble cotton strip is located the corner region of TFT body, and along the adjacent both edges of TFT body laminate mutually, the coating has the silicone adhesive layer on the TFT body, the silicone adhesive layer sets up the bubble silver is kept away from one side at TFT body edge, the bubble cotton strip is used for the restriction the silicone adhesive layer overflows the boundary of TFT body.

Further, above-mentioned TFT assembly, wherein, the tampon includes first spacing portion, second spacing portion and the third spacing portion that connects in proper order, first spacing portion along the edge laminating of the tip of TFT body, the second spacing portion with the third spacing portion along the edge laminating of the chamfer region of TFT body.

Further, in the TFT assembly, the length of the first position-limiting portion is 1 to 3 cm.

Further, in the TFT assembly, a total length of the second position-limiting portion and the third position-limiting portion is 0.5 to 1.5 cm.

Further, in the TFT assembly, a width of the first position limiting portion is 0.4 mm.

Further, in the TFT assembly, one side of the third limiting portion is aligned with an edge of the chamfered region of the TFT body, and the other side is parallel to a side of the TFT body.

Further, the thickness of the tampon is 0.3-0.5 mm.

Further, in the TFT assembly, the tampon further includes a fourth limiting portion connected to the third limiting portion, and the fourth limiting portion is parallel to the first limiting portion.

The embodiment of the utility model provides a still provide a LCM display module assembly, including backlight and apron, its characterized in that still includes above-mentioned arbitrary one TFT subassembly, the laminating of TFT subassembly has one side of bubble silver with the apron is laminated mutually, the opposite side with the backlight laminates mutually.

The embodiment of the utility model provides an in, the one side of being convenient for of TFT body is kept away from at the bubble cotton strip with the point gum of silicone to even with the coating of silicone adhesive, treat to form the silicone adhesive layer on the TFT body after the silicone adhesive air-dries naturally. When LCM full-lamination is carried out, the silicone adhesive layer can play a role in buffering the stress of the TFT body, so that the capability of the TFT body for resisting cracking under the impact of external force is enhanced. Moreover, the glue can form a required shape on the TFT body by arranging the foam strip, and the glue overflows to the edge of the TFT, so that manual wiping is avoided; meanwhile, the supporting area of the glue can be ensured to meet the design requirement, and the anti-cracking capability of the product under the impact of external force is realized.

Drawings

Fig. 1 is a schematic structural diagram of a TFT assembly according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a region A in FIG. 1;

fig. 3 is a schematic structural view of the assembled foam strip and release film in the first embodiment of the present invention;

fig. 4 is a schematic structural view of a tampon according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of an LCM display module according to an embodiment of the present invention.

Description of the main elements

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The embodiment of the invention is given in the attached drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, this embodiment is provided so that this disclosure will be thorough and complete.

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. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

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 in the description of the invention herein 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.

Referring to fig. 1 and 2, a TFT assembly according to a first embodiment of the present invention includes a TFT body 20 and a tampon 40 attached to the TFT body 20. Generally, the TFT body 20 is divided into a CF (Color filter) substrate, and a TFT substrate. The CF substrate and the TFT substrate are usually made of glass, so that the whole TFT body is also made of glass.

Specifically, the foam strips 40 are attached to the corner regions of the TFT body 20 and are attached along two adjacent edges of the TFT body 20. The corners of the TFT body 20 are non-visible areas to prevent shading of traces on the TFT body 20 or affecting the appearance of the product. In one embodiment, a single tampon 40 may be attached to each of the four corners of the TFT body 20. The TFT body 20 is coated with a layer of silicone adhesive 50, the layer of silicone adhesive 50 being disposed on a side of the tampon 40 remote from the edges of the TFT body 20 to limit the silicone adhesive 50 from spilling over the TFT body 20 boundaries by the tampon 40.

In this embodiment, the ability of the product to resist cracking under external force impact is enhanced by coating the silicone adhesive layer 50 on the TFT body 20. The silicone adhesive layer 50 is formed by dispensing and uniformly coating the silicone adhesive layer on the corner regions of the TFT body by a dispensing device and then drying the silicone adhesive layer in air. Since the silicone adhesive is in a liquid state and flows, the adhesive overflows to the edge of the TFT body when the adhesive is stacked. In this embodiment, the foam strip 40 is disposed on the TFT body 20, and the glue is dropped on the side of the foam strip 40 away from the edge of the TFT body 20, so that the foam strip 40 can play a role in blocking, and prevent the silicone adhesive from overflowing to the outside of the TFT body 20.

The shape of the foam strips 40 is designed according to the corner shape of the TFT body 20, for example, the angle of the TFT body 20 is chamfered in this embodiment, and the foam strips 40 are substantially arc-shaped. Specifically, the foam strip 40 includes a first position-limiting portion 41, a second position-limiting portion 42 and a third position-limiting portion 43 connected in sequence, the first position-limiting portion 41 is attached along the edge of the end portion of the TFT body 20, and the second position-limiting portion 42 and the third position-limiting portion 43 are attached along the edge of the chamfered area of the TFT body 20. One side surface of the third position-limiting portion 43 is aligned with the edge of the chamfered region of the TFT body 20, and the other side surface is parallel to the side edge of the TFT body 20. During dispensing, dispensing can be performed from one side of the third position-limiting portion 43, and then the coating is uniformly applied from the dispensing position toward the direction away from the third position-limiting portion 43. The first limiting portion 41, the second limiting portion 42 and the third limiting portion 43 block the glue layer from left to right, so as to prevent glue overflow.

The width of the first position-limiting portion 41 is 0.4mm, so that the distance between the coated silicone adhesive layer and the end edge of the TFT body 20 is 0.4mm, thereby meeting the design requirement.

Further, the length of the first limiting part 41 is 1-3 cm; the total length of the second limiting part 42 and the third limiting part 43 is 0.5-1.5 cm. The foam strip 40 is too long to easily shield the functional region of the TFT body 20, and too short to prevent the silicone adhesive from overflowing.

Furthermore, the thickness of the foam strip 40 is 0.3-0.5 mm, and the thickness of the silicone adhesive layer 50 is 0.4-0.6 mm. The specific shape, width and thickness of the foam need to be designed according to the shape of the TFT body 20 and the requirement of the dispensing, preferably, in this embodiment, the thickness of the foam strip 40 is 0.4 mm. During glue dispensing, the height of glue stacking can be about 0.1mm higher than the thickness of the foam strips, so that the area of the glue actually having the supporting effect can meet the design requirement.

As shown in fig. 3, when preparing the foam strip 40, the foam strip 40 and the release film 60 may be integrally die-cut to form the desired shape according to the embodiment of the present invention. The long handle at the non-foam end of the release film 60 is used as a handle and is clamped by using tweezers; the release film 60 is attached to the TFT with the foam end aligned to the shape, and the release film 60 is torn off. The side of the foam strip 40 that is attached to the TFT body 20 is glued. The foam strips 40 are resilient and stretch, and have a higher stretch than silicone adhesive, and can be made as part of a product.

In this embodiment, when the LCM full-lamination is performed, the silicone adhesive layer can buffer the force applied to the TFT body, thereby enhancing the ability of the TFT body to resist cracking under the external force impact. Moreover, the glue can be formed into a required shape on the TFT body by arranging the foam strip, so that the glue is prevented from overflowing to the edge of the TFT, and manual wiping is avoided; meanwhile, the supporting area of the glue can be ensured to meet the design requirement, and the anti-cracking capability of the product under the impact of external force is realized.

Referring to fig. 4, a tampon according to a second embodiment of the present invention is substantially the same as the tampon according to the first embodiment, except that the tampon 40 further includes a fourth position-limiting portion 44 connected to the third connecting portion 43, and the fourth position-limiting portion 44 is parallel to the first position-limiting portion 41. In this embodiment, the shape of the silicone adhesive layer can be better limited by the design of the fourth limiting portion 44, so as to prevent the glue from overflowing to the functional area or the visible area on the TFT body.

Furthermore, the width and thickness of the fourth position-limiting part can be the same as those of the first position-limiting part, and the free end of the fourth position-limiting part can be aligned with the end of the word eye of the first position-limiting part.

Referring to fig. 5, an embodiment of the present invention further provides an LCM display module, which includes the TFT assembly of any of the above embodiments, and a backlight layer 10 and a cover plate 30 respectively attached to two sides of the TFT assembly. The TFT component is attached to the cover plate through OCA glue (optical cement) by a full-attaching process. In particular, the tampon 40 is attached to the TFT body 20 on the side facing the cover 30.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not 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. The utility model provides a TFT subassembly, its characterized in that, including the TFT body with the bubble cotton sliver of laminating on the TFT body, the bubble cotton sliver is located the corner region of TFT body, and along the adjacent both edges of TFT body laminate mutually, the coating has the silicone adhesive layer on the TFT body, the silicone adhesive layer sets up the bubble cotton sliver is kept away from one side at TFT body edge, the bubble cotton sliver is used for the restriction the silicone adhesive layer overflows the boundary of TFT body.

2. The TFT assembly of claim 1, wherein the tampon includes a first stopper portion, a second stopper portion, and a third stopper portion connected in sequence, the first stopper portion being attached along an edge of an end of the TFT body, the second stopper portion and the third stopper portion being attached along an edge of a chamfered region of the TFT body.

3. The TFT assembly of claim 2, wherein the first stopper has a length of 1-3 cm.

4. The TFT assembly of claim 2, wherein a sum of the lengths of the second stopper and the third stopper is 0.5-1.5 cm.

5. The TFT assembly of claim 2, wherein the first stopper portion has a width of 0.4 mm.

6. The TFT assembly of claim 2, wherein one side of the third position-limiting portion is aligned with an edge of the chamfered region of the TFT body, and the other side is parallel to a side of the TFT body.

7. The TFT assembly of claim 1, wherein the thickness of the tampon is 0.3 mm to 0.5 mm.

8. The TFT assembly of claim 2, wherein the tampon further comprises a fourth stopper portion connected to the third stopper portion, the fourth stopper portion being parallel to the first stopper portion.

9. An LCM display module comprising a backlight layer and a cover plate, and further comprising the TFT assembly of any one of claims 1 to 8, wherein one side of the TFT assembly, to which the tampon is attached, is attached to the cover plate, and the other side is attached to the backlight layer.