Touch display module

Abstract

The utility model discloses a touch display module. The touch display module comprises a cover plate, a backlight and a graphite flake, the cover plate, the backlight and the graphite flake are sequentially arranged from bottom to top in the thickness direction of the touch display module, the end of the backlight is provided with a heat dissipation area and connected with a display screen flexible circuit board, and the graphite flake is located in the heat dissipation area; an avoiding groove for avoiding the display screen flexible circuit board is formed in the graphite sheet, and a groove opening of the avoiding groove is formed towards one end far away from the display screen flexible circuit board; according to the touch display module, the tearing handle extends towards the interior of the receding groove, so that the purpose of hiding is achieved, and different from the prior art that the tearing handle exceeds the backlight appearance, in the production and transportation process of the touch display module, due to the fact that the tearing handle is hidden, the tearing handle cannot be damaged, and the service life of the touch display module is prolonged. And the phenomenon that the protective film accidentally falls off due to collision or friction caused by external force is not easy to occur.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen field especially involves a kind of touch display module. BACKGROUND

[0002] Current integrated touch display module adopts to increase iron frame at the back of backlight, and graphite sheet is pasted on the surface of iron frame to realize heat dissipation.

[0003] After completing assembly, shipment will be carried out, and some preparations are needed before shipment, i.e. the flexible circuit board (FPC) of display screen is bent to the back of backlight, and is fixed by conductive double-sided adhesive on FPC and iron frame. At this time, in order to adapt to the position of FPC, graphite sheet needs to be designed to avoid in the corresponding area.

[0004] Typically, the patent document with the application number CN202420854435.1 discloses a backlight display module easy to dissipate heat, comprising: a display module body, the display module body includes a cover plate, a display screen and a backlight module arranged in sequence, the back of the backlight module is built-in with a graphite sheet for heat dissipation, the graphite sheet contains magnetic particles for facilitating grounding connection of the backlight module and the middle frame of mobile phone.

[0005] The technical solution of setting graphite sheet to realize heat dissipation is disclosed in the above patent document, but there are still limitations in specific use, as follows:

[0006] Graphite sheet needs to be designed to avoid in the corresponding area, but the protective film of graphite sheet needs to be torn off after FPC is bent, and the tear hand is usually designed as an extended part (beyond the shape of backlight) to facilitate the tearing of operator; but the extended tear hand is easy to be collided or rubbed by external force during production and transportation, causing the protective film to be accidentally detached, affecting yield. Meanwhile, the detachment of tear hand may cause the graphite sheet to be exposed in advance, affecting the stability of subsequent process or product performance. Figure 1 For the schematic diagram of display screen FPC unfolding in prior art, Figure 2 For the schematic diagram of display screen FPC after bending in prior art.

[0007] Therefore, how to solve the above-mentioned problems existing in the prior art has become the subject to be studied and solved by the utility model. UTILITY MODEL CONTENT

[0008] Therefore, it is necessary to provide a touch display module in view of the above technical problems.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A touch display module, comprising a cover plate, a backlight and a graphite sheet.

[0011] The cover plate, the backlight and the graphite sheet are sequentially arranged from bottom to top along the thickness direction of the touch display module, an end of the backlight has a heat dissipation area and is connected with a display screen flexible circuit board, and the graphite sheet is located in the heat dissipation area;

[0012] The graphite sheet is provided with an avoiding slot for avoiding the display screen flexible circuit board, and a slot opening of the avoiding slot is arranged towards an end away from the display screen flexible circuit board;

[0013] A protective film is positioned and connected to a side surface of the graphite sheet away from the backlight, the protective film is provided with a tear tab, and the tear tab is arranged to extend into the avoiding slot.

[0014] In the above scheme, the following contents are explained as follows:

[0015] In the above scheme, the tear tab of the utility model extends into the avoiding slot, thereby achieving the purpose of hiding, and being different from the tear tab of the prior art which exceeds the shape of the backlight, the touch display module in the utility model will not be easily subjected to external force collision or friction during production and transportation, and will not cause the protective film to be accidentally detached.

[0016] Further, a half broken line is arranged at a position corresponding to an edge of the avoiding slot at an end of the tear tab, so as to guide the tear tab to protrude away from the backlight.

[0017] Since the tear tab is in the avoiding slot, the tear tab is prone to falling and sticking to the surface of the backlight due to its own weight, thereby making it difficult to tear off subsequently.

[0018] In order to solve this problem, the half broken line is arranged to guide the tear tab to protrude away from the backlight, thereby facilitating an operator to pinch the tear tab.

[0019] Further, the tear tab is quadrangular, and the tear tab is arranged in a slot opening area of the avoiding slot.

[0020] With the above design, the operator is more likely to pull the entire protective film away from the graphite sheet. If the tear tab is arranged at other positions, a crack is likely to occur at the connection between the tear tab and the protective film when the protective film is detached.

[0021] Further, a through hole is arranged on the surface of the tear tab.

[0022] With the above design, the area of the tear tab of the protective film is reduced, thereby avoiding adsorption with the back iron shell and preventing the protective film from being easily torn.

[0023] Further, a set distance exists between the inner wall of the through hole and the edge of the tear tab.

[0024] Further, the length of the half-break line is greater than or equal to half of the length of the connection between the tear tab and the protective film.

[0025] In summary, the present application changes the tear tab to the back of the backlight (i.e. corresponding to the heat dissipation area), which is located in the area avoiding the display screen FPC, i.e. the avoidance slot position, a hole is opened in the middle of the tear tab, and only about 1.0mm wide protective film is left on three sides, which reduces the area of the protective film tear tab, avoids adsorption with the back iron shell, and is not easy to tear the protective film; by setting a half-break line at the edge of the protective film tear tab, the tear tab position of the protective film can be slightly raised, which facilitates tearing the protective film. Figure 3 As shown, according to the structure, the tear tab on the graphite sheet can be extended without increasing the size of the backlight, which avoids the protective film from falling off during production and reduces material costs.

[0026] Further, at least one reinforcing member is arranged in the through hole.

[0027] Further, the reinforcing member is in the shape of I, cross or mouth.

[0028] Further, an opening part is arranged at the edge of the tear tab surface to assist in lifting the tear tab.

[0029] Further, the opening part is an extension block arranged at the edge of the tear tab surface, and the thickness of the extension block is greater than the thickness of the tear tab.

[0030] Compared with the prior art, the present application has the following beneficial effects:

[0031] The tear tab in the present application extends into the avoidance slot, thereby achieving the purpose of hiding, which is different from the tear tab in the prior art which exceeds the backlight shape. In the production and transportation process of the touch display module in the present application, the tear tab is hidden and is not easily subjected to external force impact or friction, thereby avoiding the phenomenon of accidental falling off of the protective film. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A schematic view of the display screen FPC when it is unfolded is provided for the prior art;

[0033] Figure 2 A schematic view of the display screen FPC after it is folded is provided for the prior art;

[0034] Figure 3 A schematic view of the display screen FPC when it is unfolded is provided for the present application;

[0035] Figure 4 A schematic view of the tear tab structure is provided for the present application;

[0036] Figure 5 A schematic view of the reinforcing member in the shape of I is provided for the present application;

[0037] Figure 6 The lifting part structure schematic view is provided.

[0038] The mark in the figure is explained as follows:

[0039] 1, cover plate; 2, backlight; 3, graphite sheet; 4, display screen flexible circuit board; 5, heat dissipation area; 6, avoiding groove; 7, protective film; 8, tear hand; 9, half broken line; 10, through hole; 11, reinforcing part; 12, lifting part. DETAILED DESCRIPTION

[0040] In order for the person skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.

[0041] As described in the background, the graphite sheet will be designed to avoid the corresponding area, but the protective film of the graphite sheet needs to be removed after the FPC is bent, and the tear hand is usually designed as an extended part (beyond the shape of the backlight) so that the operator can tear it up; but the extended tear hand is easy to be collided or rubbed by external force during production and transportation, causing the protective film to fall off accidentally, affecting the yield. At the same time, the tear hand falling off may cause the graphite sheet to be exposed in advance, affecting the stability of the subsequent process or the product performance (the graphite sheet is exposed in the air, which may cause the graphite sheet to oxidize and affect the product performance) Figure 1 The present utility model provides a kind of touch display module. Figure 2 The present utility model provides a kind of touch display module.

[0042] To solve this technical problem, the utility model provides a touch display module.

[0043] Specifically, please refer to Figures 3-6 Touch display module, including cover plate 1, backlight 2 and graphite sheet 3;

[0044] Along the thickness direction of the touch display module, the cover plate 1, the backlight 2 and the graphite sheet 3 are sequentially arranged from bottom to top, the end of the backlight 2 has a heat dissipation area 5 and is connected with a display screen flexible circuit board 4, and the graphite sheet 3 is located in the heat dissipation area 5.

[0045] The graphite sheet 3 is provided with an avoiding groove 6 for avoiding the display screen flexible circuit board 4, and the slot opening of the avoiding groove 6 is arranged away from the end of the display screen flexible circuit board 4.

[0046] The graphite sheet 3 is connected with a protective film 7 on the side surface away from the backlight 2, the protective film 7 is provided with a tear hand 8, and the tear hand 8 is arranged to extend into the avoiding groove 6.

[0047] The tear hand 8 in the utility model extends into the avoiding groove 6, thereby achieving the purpose of hiding, and being different from the tear hand 8 in the prior art which exceeds the shape of the backlight 2, the touch display module in the utility model is not easily subjected to external force collision or friction during production and transportation, and the phenomenon of accidental falling of the protective film 7 is avoided.

[0048] In order for those skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings.

[0049] It should be noted that the embodiments in the utility model and the features and technical schemes in the embodiments can be combined with each other without conflict.

[0050] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0051] First embodiment

[0052] The touch display module comprises a cover plate 1, a backlight 2 and a graphite sheet 3.

[0053] The cover plate 1, the backlight 2 and the graphite sheet 3 are sequentially arranged from bottom to top along the thickness direction of the touch display module, the end of the backlight 2 has a heat dissipation area 5 and is connected with a display screen flexible circuit board 4, and the graphite sheet 3 is located in the heat dissipation area 5.

[0054] The graphite sheet 3 is provided with an avoiding groove 6 avoiding the display screen flexible circuit board 4, and the groove opening of the avoiding groove 6 is arranged to extend away from the end of the display screen flexible circuit board 4.

[0055] The graphite sheet 3 is connected with a protective film 7 on the side surface away from the backlight 2, the protective film 7 is provided with a tear hand 8, and the tear hand 8 is arranged to extend into the avoiding groove 6.

[0056] The tear hand 8 in the utility model extends into the avoiding groove 6, thereby achieving the purpose of hiding, and being different from the tear hand 8 in the prior art which exceeds the shape of the backlight 2, the touch display module in the utility model is not easily subjected to external force collision or friction during production and transportation, and the phenomenon of accidental falling of the protective film 7 is avoided.

[0057] In some embodiments, the end of the tear tab 8 is provided with a half-cut line 9 at a position corresponding to the edge of the avoiding groove 6, so as to guide the tear tab 8 to protrude away from the backlight 2.

[0058] Since the tear tab 8 is in the avoiding groove 6, the tear tab 8 is prone to falling due to its own weight and sticking to the surface of the backlight 2, which makes it difficult to tear off subsequently.

[0059] In order to solve this problem, the half-cut line 9 is used to guide the tear tab 8 to protrude away from the backlight 2, so as to facilitate the operator to pinch the tear tab 8.

[0060] In some embodiments, the tear tab 8 is quadrangular, and the tear tab 8 is arranged at the slot opening area of the avoiding groove 6.

[0061] With the above design, the operator is more likely to pull the entire protective film 7 off the graphite sheet 3. If it is arranged at other positions, the phenomenon of cracks occurring at the connection between the tear tab 8 and the protective film 7 is likely to occur when the protective film 7 is torn off.

[0062] In some embodiments, a through hole 10 is formed on the surface of the tear tab 8.

[0063] With the above design, the area of the tear tab 8 of the protective film 7 is reduced, so as to avoid being adsorbed by the back iron shell and not easily tear the protective film 7.

[0064] In some embodiments, there is a set distance between the inner wall of the through hole 10 and the edge of the tear tab 8.

[0065] With the above design, the area of the tear tab 8 of the protective film 7 is further reduced.

[0066] In some embodiments, the length of the half-cut line 9 is greater than or equal to one half of the length of the connection between the tear tab 8 and the protective film 7.

[0067] With the above design, it is ensured that the protruding state of the tear tab 8 will not be reset quickly.

[0068] In summary, the tear tab 8 is changed to the back of the backlight 2 (i.e. arranged at the position corresponding to the heat dissipation area 5), the position is in the area avoiding the display screen FPC, i.e. the position of the avoiding groove 6, a hole is formed in the middle of the tear tab 8, and only about 1.0 mm wide protective film 7 is left on three sides, so as to reduce the area of the tear tab 8 of the protective film 7, avoid being adsorbed by the back iron shell, and not easily tear the protective film 7; the half-cut line 9 is arranged at the edge of the tear tab 8 of the protective film 7, so that the tear tab 8 of the protective film 7 can be slightly raised, and the protective film 7 is easily torn. Figure 3 As shown, according to the structure, the tear tab 8 on the graphite sheet 3 can not be extended beyond the shape of the backlight 2, the protective film 7 is prevented from falling off during the production process, and the material cost is also reduced.

[0069] Second embodiment

[0070] The touch display module provided by the first embodiment is further optimized, and at least one reinforcing member 11 is arranged in the through hole 10.

[0071] In some specific embodiments, the reinforcing member 11 is in the shape of I, cross or mouth.

[0072] Since the protective film 7 is flexible, in order to ensure that the force applied to the protective film 7 is greater when the tear tab 8 is torn away from the protective film 7, the strength of the tear tab 8 is strengthened by the reinforcing member 11.

[0073] Meanwhile, the thickness of the reinforcing member 11 can be greater than the thickness of the tear tab 8, for example, two layers of reinforcing members 11 are arranged.

[0074] Third embodiment

[0075] The touch display module provided by the first or second embodiment is further optimized, and an opening part 12 is arranged at the surface edge of the tear tab 8 to assist in lifting the tear tab 8.

[0076] In some specific embodiments, the opening part 12 is an extension block arranged at the surface edge of the tear tab 8, and the thickness of the extension block is greater than the thickness of the tear tab 8.

[0077] Since the tear tab 8 is easy to adhere to the surface of the backlight 2 under external force, in order to solve this problem, the contact area between the operator's finger and the tear tab 8 is increased by the extension block, so that the tear tab 8 and the backlight 2 can be quickly separated.

[0078] The use process of the touch display module provided by the utility model is as follows:

[0079] The tear tab 8 in the utility model extends into the avoiding groove 6, thereby achieving the purpose of hiding, which is different from the tear tab 8 in the prior art which exceeds the shape of the backlight 2, and in the production and transportation process of the touch display module in the utility model, since the tear tab 8 is hidden, it will not be easily subjected to external force collision or friction, thereby causing the protective film 7 to be accidentally detached.

[0080] In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specified. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0081] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A touch display module, characterized in that, Includes cover plate (1), backlight (2) and graphite sheet (3); Along the thickness direction of the touch display module, the cover plate (1), the backlight (2) and the graphite sheet (3) are arranged sequentially from bottom to top. The end of the backlight (2) has a heat dissipation area (5) and the end is connected to the flexible circuit board (4) of the display screen. The graphite sheet (3) is located in the heat dissipation area (5). The graphite sheet (3) is provided with a clearance groove (6) to avoid the flexible circuit board (4) of the display screen, and the opening of the clearance groove (6) is set towards the end away from the flexible circuit board (4) of the display screen. A protective film (7) is positioned and connected to the side of the graphite sheet (3) away from the backlight (2). The shape of the protective film (7) matches the graphite sheet (3). A tear handle (8) is provided on the protective film (7), and the tear handle (8) extends into the clearance groove (6).

2. The touch display module according to claim 1, characterized in that, The tearing handle (8) is provided with a semi-break line (9) at the end corresponding to the edge of the clearance groove (6) to guide the tearing handle (8) to protrude toward the side away from the backlight (2).

3. The touch display module according to claim 1, characterized in that, The tearing handle (8) is quadrilateral and is located in the groove area of ​​the clearance groove (6).

4. The touch display module according to claim 2 or 3, characterized in that, A through hole (10) is provided on the surface of the tearing handle (8).

5. The touch display module according to claim 4, characterized in that, There is a set distance between the inner wall of the through hole (10) and the edge of the tear handle (8).

6. The touch display module according to claim 2, characterized in that, The length of the semi-break line (9) is greater than or equal to half the length of the connection between the tearing hand (8) and the protective film (7).

7. The touch display module according to claim 5, characterized in that, At least one reinforcing member (11) is provided inside the through hole (10).

8. The touch display module according to claim 7, characterized in that, The reinforcing member (11) is in the shape of an I, a cross, or a square.

9. The touch display module according to claim 5, characterized in that, The tearing handle (8) has a lifting part (12) on its surface edge to assist in lifting the tearing handle (8).

10. The touch display module according to claim 9, characterized in that, The opening part (12) is a protruding block provided on the edge of the surface of the tearing handle (8), and the thickness of the protruding block is greater than the thickness of the tearing handle (8).

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