TWI590120B - Integrated backlight module touch display module and its manufacturing method - Google Patents

Description

Touch display module integrating backlight module and manufacturing method thereof

The present invention relates to a structure of a touch display module and a method of fabricating the same, and more particularly to a touch display module incorporating a backlight module and a method of fabricating the same.

Nowadays, the touch display module integrating the touch module and the display module can be applied to a mobile phone, a tablet, a notebook computer or a general computer, a handheld device or other touch devices in a terminal product, and therefore, Controlled display modules are commonly used in many consumer electronic products, and the importance of integrating touch modules and display modules is increasing.

For the assembly of the conventional touch module and the display module, please refer to the first embodiment of the present invention. The general touch module 10 is mainly a flexible printed circuit (FPC), a control IC, and a glass. The substrate, the transparent conductive film (ITO) layer and the PET film, wherein the glass substrate, the ITO layer and the PET film can form a glass sensor layer and a film sensor layer. In addition, the display module 12 can be composed of a backlight module 122 and a liquid crystal display (LCD) 124. Next, referring to the first B of the present invention, the touch module 10 and the display module 12 are attached via an adhesive layer 14 of optical glue or double-sided tape. live. Finally, please refer to the first C of the present invention, and then the bonded touch module 10 and the display module 12 are joined to the front frame 16 to form a touch display module 1.

In the conventional assembly mode and structure, when the display module 12 is assembled with the front frame 16, in order to prevent the display module 12 from being joined into the front frame 16, the assembly module 12 may be slightly oversized, resulting in assembly. The situation where the size does not match occurs, so it is necessary to reserve the assembly tolerance spaces 18, 19 in the display module 12 and the front frame 16. In order to improve the assembly yield, the general industry often reserves the assembly tolerance space 18, 19 at the expense of the size of the product, and cannot make the assembled product have a narrow frame and thinner, if a smaller product size is to be achieved. The assembly tolerance spaces 18, 19 are not reserved, and the attendant risk is that the assembly yield of the display module 12 and the front frame 16 may be lowered.

Moreover, when the display module 12 is attached to the touch module 10, it is easy to have a soft cable at the bottom of the display module 12, and the bottom of the display module 12 is uneven when the film is attached, so that the bonding yield is lowered. When this risk causes poor fit, the entire display module 12 is scrapped, which in turn increases the production cost of the manufacturer. Therefore, the predicament of the existing conventional technology is that it is easy to sacrifice the size of the product in order to pursue the manufacturing yield, and the manufacturing yield is easily reduced for the product size. The above problems may cause the manufacturer to fail to provide lower cost or higher quality. Touch display module.

In view of the above, the present invention provides a touch display module integrated with a backlight module and a manufacturing method thereof for the purpose of realizing a narrow frame and a thin product size, and can increase the yield of the bonding process. And reduce production costs.

The main purpose of the present invention is to provide a touch display module with integrated backlight module and a manufacturing method thereof. First, the backlight module of the display module is integrated into the substrate and the front frame, and the display module is fixed with the backlight unit and the display. The outer frame of the glass (Film On Glass, FOG) does not need to reserve the assembly tolerance space of the touch display module and the front frame, and achieves a narrow frame and a thin design of the whole machine.

Another object of the present invention is to provide a touch display module with a backlight module and a manufacturing method thereof. The backlight unit is integrated into the front frame, and the touch module only needs to be connected to the display first. The glass is laminated, and the back surface of the display glass is a flat surface, which improves the yield of the bonding. Even if the bonding is poor, only the display glass is lost, and the entire display module including the backlight module is scrapped. To save production costs.

A further object of the present invention is to provide a touch display module with integrated backlight module and a manufacturing method thereof. The substrate used can be made of metal as a main frame to achieve thinness, narrow edge and at the same time retain strength.

In order to achieve the above object, the present invention provides a touch display module integrated with a backlight module, including a backlight module, a substrate, a first frame, a second frame, and a touch module; The backlight module is coupled; the first frame ring is disposed around the backlight module and located on the surface of the substrate; the second frame ring is disposed around the surface of the first frame and the substrate to engage the first frame and the substrate, and The top of the second frame is higher than the top of the first frame; the bottom of the touch module is attached to a transparent substrate, and the area of the transparent substrate is smaller than that of the touch module; and the touch module attached to the transparent substrate is coupled to the first frame. And a second frame for bonding the transparent substrate to the first frame The top portion and the range of the touch module not bonded to the transparent substrate are bonded to the top of the second frame to cover the transparent substrate on the backlight module.

In order to achieve the above object, the present invention also provides a method for manufacturing a touch display module integrated with a backlight module, comprising the following steps: (a) providing a substrate; (b) bonding a backlight module to a surface of the substrate; a ring is disposed around the backlight module and located on the surface of the substrate; (d) a second frame is disposed around the surface of the first frame and the substrate to engage the first frame and the substrate; e) bonding a touch module with a transparent substrate to the first frame and the second frame, so that the transparent substrate is bonded to the top of the first frame, and the touch module is not bonded to the transparent substrate At the top of the second frame, the transparent substrate is covered on the backlight module.

The touch display module of the integrated backlight module further includes a cover housing that fixes the substrate and covers the touch modules that have been joined to the first frame and the second frame.

The substrate as described above may further extend downward to form at least one side strip, and the side strips are fixed to the cover case, and the side strips are fasteners or hooks.

The side strip has a screw hole, and the side strip is fixed to the cover shell and can be inserted into the screw hole by a locking component to lock the side strip to the cover shell, the lock The solid components are screws, and the substrate and the side strips are made of metal.

The substrate as described above can be extended upward to form a flange so as to be able to pass through the second frame to fix the second frame, and the rib is made of metal.

The first frame as described above is formed in an injection molding manner and is disposed around the backlight module in an integrally formed ring; the second frame is also injection molded, and is integrally formed in the first frame. And around the surface of the substrate, wherein the first frame and the second frame are plastic materials, and the first frame is white or has a high reflectivity color.

The bottom of the touch module as described above is further adhered to the transparent substrate by a glue, and the adhesive is an optical glue or a double-sided tape.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

1‧‧‧Touch display module

10‧‧‧Touch Module

12‧‧‧Display module

122‧‧‧Backlight module

124‧‧‧LCD display

14‧‧‧Adhesive layer

16‧‧‧ front box

18‧‧‧Assembly tolerance space

19‧‧‧Assembly tolerance space

20, 20', 20"‧‧‧ Touch display module with integrated backlight module

22‧‧‧Backlight module

24‧‧‧Substrate

242‧‧‧Side strips

244‧‧‧Bulge

26‧‧‧ first frame

262‧‧‧ top

28‧‧‧ second framework

282‧‧‧ top

30‧‧‧Touch Module

32‧‧‧Transparent substrate

34‧‧‧Viscos

36‧‧‧ Covering the casing

362‧‧‧Check groove

38‧‧‧Locking components

The first A to C diagrams are schematic diagrams of the steps of the conventional touch module and the display module assembly method.

The second figure is a schematic structural view of a first embodiment of the present invention.

The third to third F diagrams are schematic structural views of the steps of the first embodiment of the present invention.

The fourth figure is a schematic structural view of a second embodiment of the present invention.

5A to 5E are schematic views showing the steps of the steps of the second embodiment of the present invention.

Figure 6 is a schematic view showing the structure of a third embodiment of the present invention.

The touch display module and the manufacturing method thereof for the integrated backlight module of the present invention can improve the bonding process of the existing touch module and the display module, so that the general manufacturer of the touch display module is The company has achieved an extremely narrow frame, thinner, increased process yield and lower cost. When the manufacturer has improved the technology and reduced the cost, it can return to the terminal product.

First, referring to the second figure of the present invention, a touch display module 20 incorporating a backlight module includes a backlight module 22, a substrate 24, a first frame 26, a second frame 28, and a touch module 30. In the embodiment, the substrate 24 is a metal substrate, and the materials of the first frame 26 and the second frame 28 may be plastic materials, and the first frame 26 is white or has a high reflectivity color. The materials and colors are only the description of the embodiment, and should not be limited thereto. The surface of the substrate 24 is bonded to the backlight module 22 such that the backlight module 22 is disposed on the surface of the substrate 24 . The first frame 26 is disposed around the backlight module 22 and located on the surface of the substrate 24 . The second frame 28 is disposed on the surface of the substrate 24 . The ring is disposed around the surface of the first frame 26 and the substrate 24 to join the first frame 26 and the substrate 24 such that the first frame 26 is located between the second frame 28 and the backlight module 22, and the top of the second frame 28 The 282 is higher than the top 262 of the first frame 26, and the bottom of the touch module 30 is attached to a transparent substrate 32. The area of the transparent substrate 32 is smaller than that of the touch module 30. In this embodiment, a glue is used. 34 is bonded to the bottom of the touch module 30 and the transparent substrate 32, and the adhesive 34 is an optical adhesive or a double-sided adhesive. The transparent substrate 32 in the embodiment is a display glass (Film On Glass, FOG). The touch module 30 of the transparent substrate 32 is bonded to the first frame 26 and the second frame 28 such that the transparent substrate 32 is bonded to the top 262 of the first frame 26, and the touch module 30 is not attached to the transparent substrate. The range of 32 is joined to the top 282 of the second frame 28 such that the transparent substrate 32 covers the backlight module 22. In addition, a cover housing 36 is further disposed around the substrate 32, and the cover is bonded to the first frame 26 The cover module 36 of the second frame 28 is the front frame or the outer casing of the product that covers the touch display module.

After the touch display module 20 of the integrated backlight module of the present invention is described, the method for manufacturing the touch display module 20 incorporating the backlight module will be described. Please refer to the third to third F of the present invention. The figure shows. First, referring to FIG. 3A of the present invention, a substrate 24 is provided, and a backlight module 22 is bonded to the surface of the substrate 24. As shown in FIG. B, a first frame 26 is disposed around the backlight module 22 and on the surface of the substrate 24. In the embodiment, the first frame 26 is injection molded and integrally formed. The ring is disposed around the backlight module 22, but should not be limited by such a manufacturing method. As shown in FIG. 3C, a second frame 28 is disposed around the surface of the first frame 26 and the substrate 24 to engage the first frame 26 and the substrate 24. The second frame 28 in this embodiment may also be The injection molding is integrally formed around the surfaces of the first frame 26 and the substrate 24, but it should not be limited by such a manufacturing method. As shown in FIG. 3D, the transparent substrate 32 is first attached to the bottom of the touch module 30 by a glue 34. As shown in FIG. 3E, the touch module 30 that has been bonded to the transparent substrate 32 is attached to the first frame 26 and the second frame 28 such that the transparent substrate 32 is bonded to the top 262 of the first frame 26. The range of the touch module 30 that is not bonded to the transparent substrate 32 is bonded to the top portion 282 of the second frame 28 to cover the transparent substrate 32 on the backlight module 22 . As shown in the third F, finally, a cover case 36 is mounted around the substrate 32 to fix the substrate 32 and all components thereon in the cover case 36, and the cover case 36 has been bonded to the cover. A frame 26 and a touch module 30 of the second frame 28.

Next, the present invention further provides another embodiment to explain how the substrate is fixed in the cover case, please refer to the fourth figure of the present invention. The touch display module 20 ′ of the integrated backlight module also includes a backlight module 22 , a substrate 24 , a first frame 26 , a second frame 28 , and a touch module 30 . The surface of the substrate 24 is bonded to the backlight module 22 such that the backlight module 22 is located on the surface of the substrate 24. The edge of the substrate 24 can be extended downward to form at least one side strip 242, and the edge of the substrate 24 can be extended upward. A flange 244 is formed. The first frame 26 is disposed around the backlight module 22 and is located on the surface of the substrate 24. The second frame 28 is disposed around the surface of the first frame 26 and the substrate 24 and is covered. The flange 244 of the substrate 24 is disposed such that the flange 244 is disposed in the second frame 28, and the second frame 28 engages the first frame 26 and the substrate 24 such that the first frame 26 is located in the second frame 28 and the backlight Between the modules 22, the top 282 of the second frame 28 is higher than the top 262 of the first frame 26. The bottom of the touch module 30 is attached to a transparent substrate 32. The area of the transparent substrate 32 is smaller than the touch module. 30, in the embodiment, the bottom of the touch module 30 and the transparent substrate 32 are bonded by a glue 34, and the adhesive is an optical glue or a double-sided tape, and the touch module 30 of the transparent substrate 32 is attached. Bonded to the first frame 26 and the second frame 28 such that the transparent substrate 32 is bonded to the top 262 of the first frame 26. The range in which the touch module 30 is not bonded to the transparent substrate 32 is bonded to the top portion 282 of the second frame 28 such that the transparent substrate 32 covers the backlight module 22 . In addition, the cover case 36 is covered with the touch module 30 that has been bonded to the first frame 26 and the second frame 28, and is fixed in the cover case 36 by the edge strip 242 around the substrate 24, In this embodiment, the side strip 242 further has a screw hole (not shown). When the side strip 242 is fixed to the cover shell 36, the thread is inserted to the thread by a locking component 38. In the hole, the edge strip 242 is locked to the cover housing 36, whereby a locking action can cover the housing 36 to fix the position of the substrate 24 and all components thereon, and the locking element 38 described herein For the screw.

Having described the structure of another embodiment of the present invention, the process of another embodiment will be described next, and please refer to FIGS. 5A to 3E of the present invention. First, referring to FIG. 5A of the present invention, a substrate 24 is provided and a backlight module 22 is bonded to the surface of the substrate 24. As shown in FIG. 5B, a first frame 26 is disposed around the backlight module 22 and is located on the surface of the substrate 24. In the embodiment, the first frame 26 is also injection molded and integrally formed. The mode ring is disposed around the backlight module 22, but should not be limited by such a manufacturing method. As shown in FIG. 5C, a second frame 28 is disposed around the surface of the first frame 26 and the substrate 24 to join the first frame 26 and the substrate 24. The second frame 28 in this embodiment may also be The outer frame is annularly disposed around the surface of the first frame 26 and the substrate 24 by injection molding, and the second frame 28 covers the flange 244 with reference to the flange 244 extending from the substrate 24, so as to cause The flange 244 is inserted into the second frame 28, but should not be limited in this manner of manufacture. As shown in FIG. 4D, the transparent substrate 32 is attached to the bottom of the touch module 30 with a glue 34, and the touch module 30 that has been bonded to the transparent substrate 32 is attached to the first frame 26 . And the second frame 28 is such that the transparent substrate 32 is bonded to the top portion 262 of the first frame 26, and the range of the touch module 30 not attached to the transparent substrate 32 is bonded to the top portion 282 of the second frame 28 to be transparent. The substrate 32 is covered on the backlight module 22. As shown in FIG. E, the substrate 32 and all the components thereon are finally fixed to a cover case 36, covering the case 36 and covering the touch module 30 that has been bonded to the first frame 26 and the second frame 28. In this embodiment, The cover housing 36 is inserted into the screw hole on the side strip 242 of the substrate 32 by a locking component 38 to lock the cover housing 36 to the edge strip 242 of the substrate 32 by the locking component. .

After the two fixing methods are described, the manner of fixing the cover shell 36 to the substrate 32 can still be illustrated by other embodiments. As shown in FIG. 6 of the present invention, a touch display module 20 integrated with the backlight module is provided. A backlight module 22, a substrate 24, a first frame 26, a second frame 28, and a touch module 30 are also included. The surface of the substrate 24 is bonded to the backlight module 22 such that the backlight module 22 is located on the surface of the substrate 24. The edge of the substrate 24 can be further extended to form at least one side strip 242, and the edge of the substrate 24 can be extended upward to form a convex edge 244. The first frame 26 is disposed around the backlight module 22 and is located on the substrate. The second frame 28 is disposed around the surface of the first frame 26 and the substrate 24 while covering the convex edge 244 of the substrate 24 such that the flange 244 is disposed in the second frame 28. The second frame 28 joins the first frame 26 and the substrate 24 such that the first frame 26 is located between the second frame 28 and the backlight module 22, and the top 282 of the second frame 28 is higher than the top 262 of the first frame 26. The bottom of the touch module 30 is bonded to a transparent substrate 32, and the area of the transparent substrate 32 The touch module 30 is smaller than the bottom of the touch module 30 and the transparent substrate 32, and the adhesive is an optical adhesive or a double-sided adhesive. The touch module is bonded to the transparent substrate 32. The 30 series is bonded to the first frame 26 and the second frame 28 such that the transparent substrate 32 is bonded to the top 262 of the first frame 26, and the range in which the touch module 30 is not attached to the transparent substrate 32 is to engage the second frame 28. The top portion 282 is configured to cover the transparent substrate 32 on the backlight module 22. In addition, the cover member 36 further covers the touch module 30 that has been bonded to the first frame 26 and the second frame 28, and The edge strip 242 around the substrate 24 is fixed in the cover case 36. In this embodiment, the side strip 242 is a hook. A fixing groove 362 can be formed between the cover housing 36 and the side strip 242 to engage the hook-shaped edge strip 242 into the groove 362 of the cover 36, thereby performing an engaging action. The cover housing 36 secures the position of the substrate 24 and all of the components thereon. However, the process of the touch display module 20 ′′ integrated with the backlight module is similar to the process of the touch display module 20 ′ of the integrated backlight module described above, and only the locking component 38 and the edge are provided in the fifth E diagram. The screw holes on the strip 242 are replaced with the hooks 242 of the hook shape in the sixth figure and the grooves 362 covering the housing 36, and therefore will not be described here.

In summary, the main spirit of the present invention is that the transparent substrate and the touch module are first attached, and the backlight module is first disposed on the substrate, and then the first frame and the second frame are sequentially disposed from the periphery of the backlight module. This makes the touch display module after integration have no tolerance space for reserved assembly. The advantage of this method is that the design of the narrow bezel and the thin design can be realized, and the tolerance space of the assembly can be completely removed. Moreover, when the touch module and the backlight module are assembled, since the transparent substrate is disposed at the bottom of the touch module, the back surface of the transparent substrate is a flat surface, thereby improving the yield at the time of bonding, even if the bonding is performed. In the case of failure, only the transparent substrate is lost, and the components that need to be scrapped are reduced, which greatly improves the process yield and reduces the production cost. In addition, the above embodiments are merely illustrative examples, and the substrate and the ribs and the ribs extending therefrom are also made of metal. If the rib is inserted into the second frame, it may be associated with the metal material. The strength of the second frame wrapped on the outer surface is improved, and the design of the side strips and the flanges does not necessarily need to exist at the same time, and the flanges or the side strips may be extended on the substrate according to the user's production requirements, or even not required. Further, the manner of fixing the substrate to the cover is not limited, and the side strip can be a fastener, in addition to the lock and the hook, and the cover can be fixed to cover the substrate.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be covered by the scope of the present invention.

20' touch display module with integrated backlight module 22 backlight module 24 substrate 242 side strip 244 flange 26 first frame 262 top 28 second frame 282 top 30 touch module 32 transparent substrate 34 adhesive 36 cover shell Body 38 locking element

Claims (24)

A touch display module integrated with a backlight module, comprising: a backlight module; a substrate, the surface of the substrate is coupled to the backlight module; a first frame, the ring is disposed around the backlight module, And on the surface of the substrate; a second frame, the ring is disposed around the first frame and the surface of the substrate to join the first frame and the substrate, and the top of the second frame is The touch module is mounted on a transparent substrate, and the transparent substrate has a smaller area than the touch module, and the touch module is bonded to the transparent substrate. Bonding to the first frame and the second frame, so that the transparent substrate is bonded to the top of the first frame, and the range of the touch module that is not attached to the transparent substrate is bonded to the second frame. The top portion is such that the transparent substrate covers the backlight module. The touch display module of the integrated backlight module of claim 1, further comprising a cover housing mounted around the substrate to fix the substrate and the backlight module thereon, the first The frame, the second frame and the touch module cover the touch module that has been bonded to the first frame and the second frame. The touch display module of the integrated backlight module of claim 2, wherein the substrate further extends downward to form at least one side strip, the side strip being fixed to the cover housing. The touch display module of the integrated backlight module of claim 3, wherein the side strip is a fastener or a hook. The touch display module of the integrated backlight module of claim 3, wherein the side strip further has a screw hole, and the side strip is fixed to the cover shell and is further disposed by a locking component. In the screw hole, the side strip is locked to the cover shell. The touch display module of the integrated backlight module of claim 5, wherein the locking component is a screw. The touch display module of the integrated backlight module of claim 3, wherein the substrate and the side strip are metal. The touch display module of the integrated backlight module of claim 1 or 3, wherein the substrate is further extendable to form a convex edge, and the substrate can be inserted into the second frame to fix the first Two frameworks. The touch display module of the integrated backlight module of claim 8, wherein the substrate and the flange are metal. The touch display module of the integrated backlight module of claim 1, wherein the first frame is injection molded and disposed around the backlight module in an integrally formed ring. The touch display module of the integrated backlight module of claim 1 or 10, wherein the second frame is injection molded and disposed around the first frame and the surface of the substrate in an integrally formed ring. The touch display module of the integrated backlight module of claim 1, wherein the first frame and the second frame are plastic materials. The touch display module of the integrated backlight module of claim 1, wherein the first frame is white or has a high reflectivity color. The touch display module of the integrated backlight module of claim 1, wherein the bottom of the touch module is further adhered to the transparent substrate by an adhesive. The touch display module of the integrated backlight module of claim 14, wherein the adhesive is an optical glue or a double-sided tape. The touch display module of the integrated backlight module of claim 1, wherein the transparent substrate is a display glass (Film On Glass, FOG). A method for manufacturing a touch display module integrated with a backlight module includes the following steps: (a) providing a substrate; (b) bonding a backlight module to a surface of the substrate; (c) providing a first frame to the ring The backlight module is disposed on the surface of the substrate; (d) a second frame is disposed around the first frame and the surface of the substrate to engage the first frame and the substrate; The e. The range of the transparent substrate is bonded to the top of the second frame to cover the transparent substrate. The method for manufacturing a touch display module of the integrated backlight module of claim 17, further comprising a step (f) of mounting a cover case around the substrate, the cover case fixing the substrate and the substrate The backlight module, the first frame, the second frame, and the touch module, and the touch module that has been bonded to the first frame and the second frame is wrapped in the cover shell . The method of manufacturing the touch display module of the integrated backlight module of claim 17, wherein in the step (e), the transparent substrate is adhered to the bottom of the control module by a glue, and the The area of the transparent substrate is smaller than the touch module. The method for manufacturing a touch display module of the integrated backlight module according to claim 19, wherein the adhesive is an optical glue or a double-sided tape. The method of manufacturing the touch display module of the integrated backlight module of claim 17, wherein in the step (c), the first frame is injection molded and disposed around the backlight module in an integrally formed ring. The method of manufacturing the touch display module of the integrated backlight module of claim 17 or 21, wherein in the step (d), the second frame is injection-molded and disposed in the first frame with an integrally formed ring Around the surface of the substrate. The method for manufacturing a touch display module with integrated backlight module according to claim 17, wherein the transparent substrate is a display glass. The method for manufacturing a touch display module with integrated backlight module according to claim 17, wherein the first frame is white or has a high reflectivity color.