CN107765765B - Assembly structure and assembly method of touch display device - Google Patents

Abstract

Translated fromChinese

本发明提供一种触控显示装置的组装结构及其组装方法。该组装结构包含第一组合单元、第二组合单元、第一盖体及第二盖体。第一组合单元包括触控屏幕及承载装置。第二组合单元包括外壳套体及辅助定位元件。第一组合单元是置入于外壳套体。辅助定位元件是可滑移地设置于外壳套体的底板与第一组合单元之间。当辅助定位元件位于底板的第一位置时，第一组合单元可相对于外壳套体而滑移；以及当辅助定位元件位于底板的第二位置时，辅助定位元件抵顶第一组合单元，以与外壳套体的第一侧板及第二侧板相配合以定位第一组合单元。本发明结构简单，并可提升结构强度，利于窄边框甚或无边框设计，不但可以降低制造成本、更可提升视觉感观。

The present invention provides an assembly structure of a touch display device and an assembly method thereof. The assembly structure comprises a first assembly unit, a second assembly unit, a first cover body and a second cover body. The first assembly unit comprises a touch screen and a carrying device. The second assembly unit comprises an outer shell and an auxiliary positioning element. The first assembly unit is inserted into the outer shell. The auxiliary positioning element is slidably arranged between the bottom plate of the outer shell and the first assembly unit. When the auxiliary positioning element is located at the first position of the bottom plate, the first assembly unit can slide relative to the outer shell; and when the auxiliary positioning element is located at the second position of the bottom plate, the auxiliary positioning element abuts against the first assembly unit to cooperate with the first side plate and the second side plate of the outer shell to position the first assembly unit. The present invention has a simple structure and can improve the structural strength, which is conducive to a narrow frame or even a frameless design, which can not only reduce the manufacturing cost but also improve the visual perception.

Description

Assembly structure and assembly method of touch display device

Technical Field

The present invention relates to an assembly structure of a touch display device and an assembly method thereof, and more particularly, to an assembly structure of a narrow-bezel touch display device and an assembly method thereof.

Background

With the increasing maturity of touch display technology and the continuous reduction of cost, touch display devices, such as smart phones and tablet computers, have become an indispensable part of people's lives. In order to further improve the visual experience texture of the user, the narrower the frame of the touch display device is, the more the touch display device tends to be without the frame. Therefore, weight reduction, thickness reduction and beauty have become the main development trend of the touch display device nowadays.

In the assembly structure of a general touch display device, the frame and the housing mainly provide the functions of reinforcing and fixing the structure. The existence of the frame may cause the overall size of the touch display device to be increased, the effective display area to be reduced, the weight of the touch display device to be increased, the structure to be complicated, the manufacturing cost to be increased, and the like, but the frame structure may be weakened if not used. On the other hand, the frame has the function of protecting the touch screen. Fig. 1 is a schematic cross-sectional view of an assembly structure of a conventional narrow-bezel touch display device. As shown in fig. 1, the conventional narrow-bezeltouch display device 1 is limited in that the width of thetouch panel 11 is smaller than the width of thedisplay unit 12, so a composite housing is adopted to assemble and fix thetouch screen 10 formed by attaching thetouch panel 11 and thedisplay unit 12, that is, thetouch screen 10 is clamped between the two independent andcorresponding side frames 13 and 14 by lateral assembly on the two opposite sides of thetouch screen 10, and other internal components are assembled between the twoside frames 13 and 14, and then theback cover 15 and the twoside frames 13 and 14 are assembled with each other to complete the assembly production. However, the twoside frames 13 and 14 of the narrow-bezeltouch display device 1 are miniaturized and are not easy to manufacture, and the assembling between the twoside frames 13 and 14 and thetouch screen 10 increases the complexity of the assembly process, which results in low production efficiency. Meanwhile, the joining of theside frames 13 and 14 and theback cover 15 is not favorable for the thinning of the whole structure, and the structural strength after assembly cannot be enhanced, so that the cost of the mold for producing the fine frame cannot be reduced.

Disclosure of Invention

The invention aims to provide an assembling structure and an assembling method of a touch display device, which have simple structure, can simplify the assembling process, are easy to assemble, disassemble and maintain, can improve the structural strength, are beneficial to the design of narrow frames or even no frames, can reduce the manufacturing cost and can improve the visual perception.

To achieve the foregoing objective, the present invention provides an assembly structure of a touch display device, which includes a first assembly unit, a second assembly unit, a first cover and a second cover. The first combination unit comprises a touch screen and a bearing device, wherein the touch screen is arranged on the bearing device. The second combination unit is combined with the first combination unit and comprises an outer casing body and an auxiliary positioning element. The outer casing body comprises a bottom plate, a first side plate, a second side plate, an upper opening portion, a first port portion, a second port portion, a plurality of first clamping elements and an accommodating space, wherein the first side plate and the second side plate extend upwards from two opposite side edges of the bottom plate respectively, the first clamping elements are arranged on the bottom plate, the first combination unit is placed into the accommodating space through the first port portion or the second port portion, the touch screen is exposed through the upper opening portion, and the first side plate and the second side plate limit the first combination unit to be separated from the upper opening portion. The auxiliary positioning element is arranged between the bottom plate and the first combination unit in a sliding manner and comprises a plurality of second clamping elements corresponding to the first clamping elements, wherein when the auxiliary positioning element is positioned at the first position of the bottom plate, the first clamping elements are clamped with the second clamping elements, so that the first combination unit can slide relative to the shell sleeve body; and when the auxiliary positioning element is located at the second position of the bottom plate, the plurality of first clamping elements are separated from the plurality of second clamping elements, and the auxiliary positioning element abuts against the first combination unit so as to be matched with the first side plate and the second side plate to position the first combination unit. The first cover body is covered on the first port portion, and the second cover body is covered on the second port portion.

To achieve the foregoing objective, the present invention further provides an assembling method of a touch display device, comprising: (a) providing a first combination unit, wherein the first combination unit comprises a touch screen and a bearing device, and the touch screen is arranged on the bearing device; (b) providing a second combination unit, wherein the second combination unit comprises an outer shell sleeve body and an auxiliary positioning element, the outer shell sleeve body comprises a bottom plate, a first side plate, a second side plate, an upper opening part, a first port part, a second port part, a plurality of first clamping elements and an accommodating space, the first side plate and the second side plate respectively extend upwards from two opposite side edges of the bottom plate, the plurality of first clamping elements are arranged on the bottom plate, and the auxiliary positioning element can be arranged on the bottom plate in a sliding manner and comprises a plurality of second clamping elements; (c) moving the auxiliary positioning element to a first position of the bottom plate, so that the plurality of first clamping elements and the plurality of second clamping elements are clamped, and the first combination unit is placed into the accommodating space through the first port part or the second port part of the outer shell sleeve body, so that the touch screen is exposed through the upper opening part, and the first side plate and the second side plate limit the first combination unit to be separated from the upper opening part; and (d) moving the auxiliary positioning element to a second position of the bottom plate to separate the plurality of first clamping elements from the plurality of second clamping elements, wherein the auxiliary positioning element abuts against the first combination unit, so that the auxiliary positioning element is matched with the first side plate and the second side plate to position the first combination unit.

The invention provides an assembling structure and an assembling method of a touch display device, which have simple structure, can simplify the assembling process, are easy to assemble, disassemble and maintain, can improve the structural strength, are beneficial to the design of narrow frames or even no frames, can reduce the manufacturing cost and can improve the visual perception.

Drawings

Fig. 1 is a schematic cross-sectional view of an assembly structure of a conventional narrow-bezel touch display device.

Fig. 2 is an exploded view of a narrow bezel touch display device according to a preferred embodiment of the invention.

Fig. 3 is a schematic view of a partially assembled structure of a narrow-bezel touch display device according to a preferred embodiment of the invention.

Fig. 4 is a combined structure diagram of a narrow-bezel touch display device according to a preferred embodiment of the invention.

Fig. 5 is a cross-sectional view of the narrow-bezel touch display device in fig. 4 along the AA line segment.

Fig. 6A to 6E are schematic assembly flow diagrams of the narrow-bezel touch display device in fig. 4 at the BB line segment cross section.

Fig. 7 is a flowchart illustrating an assembly method of a narrow-bezel touch display device according to a preferred embodiment of the invention.

Description of reference numerals:

1: touch control display device

10: touch screen

11: touch panel

12: display unit

13. 14: side frame

15: back cover

2: touch control display device

3: first combined unit

31: touch screen

311: touch panel

312: display unit

32: bearing device

33: circuit board

34: battery with a battery cell

35: buffer element

321: topside

322: the first side edge

323: second side edge

324: bottom edge

4: second combined unit

41: outer casing body

42: auxiliary positioning element

410: base plate

411: first side plate

411 a: a first narrow frame part

412: second side plate

412 a: second narrow frame part

413: upper opening part

414: first port part

415: second port part

416: first engaging element

417: containing space

418: a first limit part

419: second limit part

420: plate member

421: second engaging element

5: first cover body

6: second cover body

P1: first position

P2: second position

R1: first chute

R2: second chute

AA. BB: cross section of

S1-S4: step (ii) of

Detailed Description

Some exemplary embodiments that embody features and advantages of the invention will be described in detail in the description that follows. It is to be understood that the invention is capable of modification in various respects, all without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature, and not as restrictive.

Fig. 2 is an exploded view of a narrow-bezel touch display device according to a preferred embodiment of the present invention, fig. 3 is a schematic diagram of a partially assembled structure of the narrow-bezel touch display device according to the preferred embodiment of the present invention, fig. 4 is a combined structure diagram of the narrow-bezel touch display device according to the preferred embodiment of the present invention, and fig. 5 is a cross-sectional view of the narrow-bezel touch display device in fig. 4 along an AA line segment. As shown in fig. 2 to 5, thetouch display device 2 of the present invention can be a narrow-bezel touch display device, such as but not limited to a narrow-bezel mobile phone and a narrow-bezel tablet computer. Thetouch display device 2 of the present invention includes afirst combination unit 3, asecond combination unit 4, afirst cover 5 and asecond cover 6. Thefirst combination unit 3 includes atouch screen 31 and a carryingdevice 32, wherein thetouch screen 31 is disposed on the carryingdevice 32, that is, the carryingdevice 32 carries thetouch screen 31. Thesecond combination unit 4 is combined with thefirst combination unit 3 and includes anouter sheath 41 and anauxiliary positioning element 42. Thehousing 41 includes abottom plate 410, afirst side plate 411, asecond side plate 412, anupper opening 413, afirst port 414, asecond port 415, a plurality of firstengaging elements 416, and anaccommodating space 417, wherein thefirst side plate 411 and thesecond side plate 412 respectively extend upward from two opposite sides of thebottom plate 410, in other words, thebottom plate 410, thefirst side plate 411, and thesecond side plate 412 are a single integral component. The plurality of firstengaging elements 416 are disposed on the upper surface of thebottom plate 410, wherein thefirst assembly unit 3 is disposed in theaccommodating space 417 through thefirst port 414 or thesecond port 415, so that thetouch screen 31 is exposed through theupper opening 413, and thefirst side plate 411 and thesecond side plate 412 restrict thefirst assembly unit 3 from being disengaged from theupper opening 413. Theauxiliary positioning element 42 is slidably disposed between thebottom plate 410 of thesheath 41 and thefirst assembling unit 3, and includes aplate 420 and a plurality of secondengaging elements 421, wherein the plurality of secondengaging elements 421 are located on the lower surface of theplate 420 and correspond to the plurality of firstengaging elements 416. When theauxiliary positioning element 42 is located at the first position of thebottom plate 410, the firstengaging elements 416 engage with the secondengaging elements 421, so that thefirst combination unit 3 can slide relative to theouter sheath 41; and when theauxiliary positioning element 42 is located at the second position of thebottom plate 410, the plurality of firstengaging elements 416 are disengaged from the plurality of secondengaging elements 421, and theauxiliary positioning element 42 abuts against thefirst assembling unit 3, so as to cooperate with thefirst side plate 411 and thesecond side plate 412 to position thefirst assembling unit 3. Thefirst cover 5 is sleeved on thefirst port 414 of thehousing 41, and thesecond cover 6 is sleeved on thesecond port 415 of thehousing 41.

In the present embodiment, as shown in fig. 5, thetouch screen 31 includes atouch panel 311 and adisplay unit 312, wherein the width of thedisplay unit 312 is greater than the width of thetouch panel 311, and thetouch panel 311 is attached to thedisplay unit 312 by using, for example, an optical adhesive, and two opposite side edges of thedisplay unit 312 are exposed. As shown in fig. 1 and 5, thecarrier 32 has atop side 321, afirst side 322, asecond side 323, and abottom side 324, thetouch screen 31 is disposed on the top surface of thecarrier 32, and two opposite side edges of thedisplay unit 312 exposed relative to thetouch panel 311 are respectively opposite to thefirst side 322 and thesecond side 323 of thecarrier 32.

In this embodiment, the firstengaging element 416 and the secondengaging element 421 can be a groove and a protrusion, or a protrusion and a groove, respectively, wherein the protrusion and the groove are engaged with each other. In the present embodiment, as shown in fig. 1 and 5, thesheath 41 further includes a first position-limitingportion 418 and a second position-limitingportion 419, which are respectively disposed on the inner surfaces of thefirst side plate 411 and thesecond side plate 412 and respectively extend from thefirst port 414 to thesecond port 415. In addition, thefirst side plate 411 and thesecond side plate 412 of the case cover 41 respectively extend from the end edges to theaccommodating space 417 in a slightly inward inclined or arc shape to form a firstnarrow frame portion 411a and a secondnarrow frame portion 412 a. The first position-limitingportion 418 and the firstnarrow frame portion 411a of thefirst side plate 411 may define to form a first sliding slot R1, and the second position-limitingportion 419 and the secondnarrow frame portion 412a of thesecond side plate 412 may define to form a second sliding slot R2. When theauxiliary positioning element 42 is located at the first position of thebottom plate 410 of thecase body 41, thefirst combination unit 3 can be slidably disposed into theaccommodating space 417 from thefirst port 414 or thesecond port 415 of thecase body 41, at this time, two opposite side edges of thedisplay unit 312 exposed relative to thetouch panel 311 are respectively and slidably disposed in the first sliding slot R1 and the second sliding slot R2, thefirst side edge 322 of the carryingdevice 32 is located at the other side of the first limitingportion 418 relative to the first sliding slot R1 and is adjacent to the first limitingportion 418, and thesecond side edge 323 of the carryingdevice 32 is located at the other side of the second limitingportion 419 relative to the second sliding slot R2 and is adjacent to the second limitingportion 419. Therefore, the bearingdevice 32 is accommodated in theaccommodating space 417 of thehousing 41, thetouch panel 311 of thetouch screen 31 is exposed to theupper opening 413 of thehousing 41, and thefirst assembly unit 3 can be easily moved out of or placed into thehousing 41 by an external force. In addition, when theauxiliary positioning element 42 slides to the second position of thebottom plate 410 of theouter sheath 41 by an external force, the secondengaging element 421 of theauxiliary positioning element 42 disengages from the firstengaging element 416 of theouter sheath 41, so that theauxiliary positioning element 42 abuts against thefirst assembling unit 3 upward, in other words, when theauxiliary positioning element 42 moves from the first position to the second position of thebottom plate 410 of theouter sheath 41 by an external force, theauxiliary positioning element 42 increases the distance between thefirst assembling unit 3 and thebottom plate 410. At this time, thefirst side 322 and thesecond side 323 of the carryingdevice 32 respectively abut against and contact with the first limitingportion 418 and the second limitingportion 419 to limit the movement, so that theauxiliary positioning element 42 can be mutually matched with the first limitingportion 418 of thefirst side plate 411 and the second limitingportion 419 of thesecond side plate 412 to position thefirst combination unit 3.

In this embodiment, the firstnarrow frame portion 411a and the secondnarrow frame portion 412a of thefirst side plate 411 and thesecond side plate 412 of thecase body 41 are respectively adjacent to two opposite side edges of thetouch panel 311, and partially cover two opposite side edge areas of thedisplay unit 312 exposed. It should be emphasized that the widths of the firstnarrow frame portion 411a and the secondnarrow frame portion 412a of thecase body 41 are set corresponding to thetouch panel 311 and thedisplay unit 312 of thetouch screen 31. In some embodiments, the firstnarrow frame portion 411a and the secondnarrow frame portion 412a of thesheath 41 are adjacent to thetouch panel 311 of thetouch screen 31 to form a coplanar structure, but not limited thereto. The narrower the widths of the firstnarrow frame portion 411a and the secondnarrow frame portion 412a of thecase body 41 are, the more favorable the narrow-frametouch display device 2 is formed, so that the narrow-frame touch display device tends to be frameless.

In the present embodiment, as shown in fig. 1 and 5, thefirst assembly unit 3 further includes acircuit substrate 33 and abattery 34, wherein thecircuit substrate 33 is assembled on the carryingdevice 32 and electrically connected to thetouch screen 31. Thebattery 34 is assembled under the supportingdevice 32 and electrically connected to thecircuit substrate 33 and thetouch screen 31 to provide power for the operation of thecircuit substrate 33 and thetouch screen 31. In some embodiments, as shown in fig. 5, thefirst assembly unit 3 further includes abuffer element 35 disposed on the bottom surface of thebattery 34 and configured to provide a buffer mechanism to prevent the components of thefirst assembly unit 3 from being damaged due to excessive external force.

In some embodiments, as shown in fig. 2, thefirst cover 5 can be assembled to the supportingdevice 32 and then sleeved on thefirst port 414 of theouter sheath 41. Thefirst cover 5 can be assembled to thetop edge 321 of the supportingdevice 32, and the connection between thefirst cover 5 and the supportingdevice 32 can be, but not limited to, snap, glue, mesh, or screw. In other embodiments, thefirst cover 5 and the supportingdevice 32 may be a single-component structure integrally formed. In some embodiments, thesecond cover 6 is detachably assembled to thebottom edge 324 of the supportingdevice 32, wherein thesecond cover 6 is connected to the supportingdevice 32 by, but not limited to, snapping, adhering, engaging, or screwing. In other embodiments, thefirst cover 5 and thesecond cover 6 are detachably sleeved on thefirst port 414 and thesecond port 415 of thehousing body 41, and can be respectively engaged with thefirst port 414 and thesecond port 415 of thehousing body 41, and the engagement manner can be, but not limited to, snapping, bonding, engaging, or screwing.

Fig. 6A to 6E are schematic diagrams illustrating an assembly process of the narrow-bezel touch display device in fig. 4 on a BB cross section, and fig. 7 is a flowchart illustrating an assembly method of the narrow-bezel touch display device according to a preferred embodiment of the invention. First, as shown in fig. 6A and step S1 of fig. 7, afirst combination unit 3 is provided, in which thefirst combination unit 3 includes atouch screen 31 and acarrier device 32, and thetouch screen 31 is disposed on thecarrier device 32. In some embodiments, thefirst combination unit 3 further includes acircuit substrate 33, abattery 34 and a buffer element 35 (as shown in fig. 5), wherein the structures, connection relationships and functions of thetouch screen 31, the carryingdevice 32, thecircuit substrate 33, thebattery 34 and thebuffer element 35 are as described above, and are not described herein again. In one embodiment, as shown in fig. 6B, afirst cover 5 is provided, and thefirst cover 5 is assembled with the carryingdevice 32 of thefirst assembly unit 3. Of course, in other embodiments, this step may be omitted, and thefirst cover 5 is assembled with thefirst combination unit 3 and thesecond combination unit 4 and then covered on thefirst port 414 of the outer sheath 41 (as shown in fig. 1).

Next, as shown in fig. 1, 6C and step S2 of fig. 7, asecond combination unit 4 is provided, wherein thesecond combination unit 4 includes anouter casing 41 and anauxiliary positioning element 42, wherein theouter casing 41 includes abottom plate 410, afirst side plate 411, asecond side plate 412, anupper opening 413, afirst port 414, asecond port 415, a plurality of firstengaging elements 416 and anaccommodating space 417, thefirst side plate 411 and thesecond side plate 412 extend upward from two opposite sides of thebottom plate 410, respectively, and the plurality of firstengaging elements 416 are disposed on thebottom plate 410, wherein theauxiliary positioning element 42 is slidably disposed on thebottom plate 410 and includes a plurality of secondengaging elements 412 corresponding to the plurality of firstengaging elements 411. The structure, connection and function of thesheath 41 and theauxiliary positioning element 42 are as described above, and are not described herein again. Then, as shown in fig. 1, 6C and step S3 of fig. 7, theplate 420 of theauxiliary positioning element 42 is moved to the first position P1 of thebottom plate 410 of thecase body 41, the plurality of firstengaging elements 416 and the plurality of secondengaging elements 421 are engaged, thefirst assembly unit 3 is placed into theaccommodating space 417 through thefirst port 414 of thecase body 41, thetouch screen 31 is exposed through theupper opening 413, and thefirst side plate 411 and thesecond side plate 412 restrict thefirst assembly unit 3 from being detached from theupper opening 413. In some embodiments, if thefirst cap 5 is not assembled to thefirst combination unit 3 first, thefirst combination unit 3 can be placed into theaccommodation space 417 through thefirst port 414 or thesecond port 415 of theouter sheath 41.

Then, as shown in fig. 1, 6D and step S4 of fig. 7, theplate 420 of theauxiliary positioning element 42 is moved to the second position P2 of thebottom plate 410 of theouter sheath 41, so that the plurality of firstengaging elements 416 are disengaged from the plurality of secondengaging elements 421, and theauxiliary positioning element 42 is pressed against thefirst assembling unit 3, so that theauxiliary positioning element 42 is engaged with thefirst side plate 411 and thesecond side plate 412 of theouter sheath 41 to position thefirst assembling unit 3.

Finally, as shown in fig. 1 and 6E, asecond cover 6 is provided, and thesecond cover 6 is covered on thesecond port portion 415 of thehousing body 41. In some embodiments, if thefirst cap 5 is not first assembled to thefirst assembly unit 3, the method may further include the step of providing thefirst cap 5 and covering thefirst end portion 414 of theouter sheath 41 with thefirst cap 5.

In summary, the present invention provides an assembly structure and an assembly method of a touch display device, which have simple structure, can simplify the assembly process, are easy to assemble, disassemble and maintain, can improve the structural strength, are beneficial to the design of narrow frames or even no frames, can reduce the manufacturing cost, and can improve the visual perception.

The present invention may be modified in various ways by those skilled in the art without departing from the scope of the appended claims.

Claims (15)

1. An assembly structure of a touch display device comprises:

the first combination unit comprises a touch screen and a bearing device, wherein the touch screen is arranged on the bearing device;

a second combination unit, combined with the first combination unit, and comprising:

a housing, including a bottom plate, a first side plate, a second side plate, an upper opening, a first port, a second port, a plurality of first engaging elements and a receiving space, wherein the first side plate and the second side plate respectively extend upward from two opposite sides of the bottom plate, the plurality of first engaging elements are disposed on the bottom plate, wherein the first combining unit is placed into the receiving space through the first port or the second port, so that the touch screen is exposed through the upper opening, and the first side plate and the second side plate limit the first combining unit to be detached from the upper opening; and

an auxiliary positioning element, slidably disposed between the base plate and the first assembly unit, and including a plurality of second engaging elements corresponding to the plurality of first engaging elements, wherein when the auxiliary positioning element is located at a first position of the base plate, the plurality of first engaging elements engage with the plurality of second engaging elements, so that the first assembly unit can slide relative to the housing; and when the auxiliary positioning element is positioned at a second position of the bottom plate, the plurality of first clamping elements are separated from the plurality of second clamping elements, and the auxiliary positioning element is abutted against the first combination unit so as to be matched with the first side plate and the second side plate to position the first combination unit.

2. The assembly structure of a touch display device according to claim 1, wherein the first engaging element and the second engaging element are a groove and a protrusion, or a protrusion and a groove, respectively, wherein the protrusion and the groove are engaged with each other.

3. The assembly structure of a touch display device according to claim 1, wherein the housing comprises a first position-limiting portion and a second position-limiting portion, the first position-limiting portion and the second position-limiting portion are respectively disposed on inner surfaces of the first side plate and the second side plate and respectively extend from the first port portion to the second port portion, wherein a free end portion of the first side plate has a first narrow frame portion, a free end portion of the second side plate has a second narrow frame portion, wherein the first position-limiting portion and the first narrow frame portion of the first side plate define a first sliding slot, and the second position-limiting portion and the second narrow frame portion of the second side plate define a second sliding slot.

4. The assembly structure of a touch display device according to claim 3, wherein the touch screen comprises a touch panel and a display unit, wherein the width of the display unit is greater than the width of the touch panel, and the touch panel is attached to the display unit such that two opposite side edges of the display unit are partially exposed.

5. The assembly structure of a touch display device according to claim 4, wherein the carrier has a top edge, a first side edge, a second side edge and a bottom edge, and the two opposite side edges exposed by the display unit are respectively opposite to the first side edge and the second side edge of the carrier.

6. The assembly structure of a touch display device according to claim 5, wherein when the auxiliary positioning element is located at the first position of the bottom plate, the first assembly unit is slidably disposed in the accommodating space from the first port or the second port of the housing, wherein the two exposed opposite side edges of the display unit are respectively slidably disposed in the first sliding slot and the second sliding slot, the first side edge of the carrier device is located at the other side of the first position-limiting portion opposite to the first sliding slot and adjacent to the first position-limiting portion, and the second side edge of the carrier device is located at the other side of the second position-limiting portion opposite to the second sliding slot and adjacent to the second position-limiting portion.

7. The assembly structure of a touch display device according to claim 6, wherein when the auxiliary positioning element moves from the first position to the second position of the base plate, the auxiliary positioning element abuts against the first assembly unit, and the first side and the second side of the carrier device abut against and contact with the first limiting portion and the second limiting portion, respectively.

8. The assembly structure of a touch display device according to claim 1, wherein the first assembly unit further comprises a circuit substrate and a battery, wherein the circuit substrate is assembled on the carrier and electrically connected to the touch screen, and the battery is assembled under the carrier and electrically connected to the circuit substrate and the touch screen.

9. The assembly structure of a touch display device according to claim 8, wherein the first assembly unit further comprises a buffer element disposed on a bottom surface of the battery.

10. An assembling method of a touch display device comprises the following steps:

(a) providing a first combination unit, wherein the first combination unit comprises a touch screen and a bearing device, and the touch screen is arranged on the bearing device;

(b) providing a second combination unit, wherein the second combination unit comprises a housing and an auxiliary positioning element, wherein the housing comprises a bottom plate, a first side plate, a second side plate, an upper opening, a first port, a second port, a plurality of first engaging elements and a containing space, the first side plate and the second side plate respectively extend upwards from two opposite sides of the bottom plate, and the plurality of first engaging elements are arranged on the bottom plate, wherein the auxiliary positioning element can be arranged on the bottom plate in a sliding manner and comprises a plurality of second engaging elements;

(c) moving the auxiliary positioning element to a first position of the bottom plate, so that the plurality of first clamping elements and the plurality of second clamping elements are clamped, and the first combination unit is placed into the accommodating space through the first port part or the second port part of the outer shell sleeve body, so that the touch screen is exposed through the upper opening part, and the first side plate and the second side plate limit the first combination unit to be separated from the upper opening part; and

(d) moving the auxiliary positioning element to a second position of the bottom plate to separate the plurality of first engaging elements from the plurality of second engaging elements, and the auxiliary positioning element abuts against the first assembling unit, so that the auxiliary positioning element is matched with the first side plate and the second side plate to position the first assembling unit.

11. The method of claim 10, wherein the case body includes a first position-limiting portion and a second position-limiting portion, the first position-limiting portion and the second position-limiting portion are respectively disposed on inner surfaces of the first side plate and the second side plate and respectively extend from the first port portion to the second port portion, wherein a free end of the first side plate has a first narrow frame portion, a free end of the second side plate has a second narrow frame portion, the first position-limiting portion and the first narrow frame portion of the first side plate define a first sliding slot, and the second position-limiting portion and the second narrow frame portion of the second side plate define a second sliding slot.

12. The method of claim 11, wherein the touch screen comprises a touch panel and a display unit, wherein the display unit has a width greater than that of the touch panel, and the touch panel is attached to the display unit such that two opposite side edges of the display unit are partially exposed.

13. The method of claim 12, wherein the carrier has a top edge, a first side edge, a second side edge, and a bottom edge, and the two opposite side edges of the display unit are opposite to the first side edge and the second side edge of the carrier, respectively.

14. The assembly method of the touch display device of claim 13, wherein in the step (c), when the auxiliary positioning element is located at the first position of the bottom plate, the first assembly unit is slidably disposed into the accommodating space from the first port or the second port of the housing, wherein the two opposite exposed edges of the display unit are respectively and correspondingly slidably disposed in the first sliding slot and the second sliding slot, the first side of the carrier is located at the other side of the first position-limiting portion relative to the first sliding slot and adjacent to the first position-limiting portion, and the second side of the carrier is located at the other side of the second position-limiting portion relative to the second sliding slot and adjacent to the second position-limiting portion.

15. The method according to claim 14, wherein in the step (d), when the auxiliary positioning element moves from the first position to the second position of the base plate, the auxiliary positioning element abuts against the first assembling unit upward, and the first side edge and the second side edge of the carrier device abut against and contact the first limiting portion and the second limiting portion, respectively.

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