Touch display module

Abstract

The utility model discloses a touch display module which comprises a backlight rubber frame, a lower polaroid, a large piece of glass, a small piece of glass, an upper polaroid, frame rubber and a touch screen cover plate. A mounting groove is formed in the backlight rubber frame, and the lower polaroid, the large piece of glass, the small piece of glass and the upper polaroid are sequentially stacked in the direction from the groove bottom to the groove opening of the mounting groove, so that the groove opening of the mounting groove is flush with the surface of the upper polaroid; according to the utility model, the gap can be filled up through the filling piece, so that the driving IC and the flexible circuit board are fixedly connected with the frame glue, the situation that the FPC and the IC of the lower glass cannot be pasted due to the fact that a gap exists between the positions of the FPC and the IC of the lower glass and the frame pasting sponge is avoided, and specifically, the FPC and the IC cannot be pasted along the direction from the groove bottom to the groove opening of the mounting groove. The lower polaroid, the large piece of glass, the small piece of glass and the upper polaroid are sequentially stacked so that the notch of the installation groove can be flush with the surface of the upper polaroid, then the gap is filled with the filling piece, and finally the touch screen cover plate is connected with the backlight rubber frame and the upper polaroid through the frame glue.

Description

Technical Field

[0001] The utility model relates to the field of display screens, and particularly to a touch display module. Background Art

[0002] Generally, the laminated structure of a frame-attached display screen module is composed of a touch screen + frame-attached foam + liquid crystal display panel + backlight. The frame-attached sponge adheres to the backlight glue frame and the liquid crystal display panel, and the backlight and the liquid crystal display panel are suspended under the touch screen.

[0003] Typically, in the patent document with the application number CN201610215632.9, a processing method of a touch display module is disclosed. The U-shaped foam adhesive is placed on the lower layer of the first positioning jig, and the surface touch screen CTP is placed on the upper layer of the first positioning jig. The lower surface of the surface touch screen CTP and the U-shaped foam adhesive are adhered and pressed tightly by using the first positioning jig to obtain a semi-finished frame-attached module. Then, the liquid crystal display screen TFT LCM is placed on the lower layer of the second positioning jig, and the semi-finished frame-attached module is placed on the upper layer of the second positioning jig. The semi-finished frame-attached module and the liquid crystal display screen TFT LCM are adhered and pressed tightly by using the second positioning jig, and then assembled and adhered into a finished frame-attached module to obtain the touch display module.

[0004] The above patent document discloses the laminated structure composed of a touch screen + frame-attached foam + liquid crystal display panel + backlight. However, this laminated structure still has limitations, which are specifically as follows:

[0005] If the adhesive area is limited, the display screen module is likely to be separated and detached from the touch screen, especially for large-size modules, which are more likely to fall off (specifically, refer to Figures 1 - 3 , there is a gap between the FPC and IC positions of the lower glass sheet and the frame-attached sponge, resulting in inability to paste, which reduces the effective adhesion area of the frame glue). Summary of the Utility Model

[0006] Based on this, in view of the technical problem that if the adhesive area is limited, the display screen module is likely to be separated and detached from the touch screen, especially for large-size modules, which are more likely to fall off, as proposed in the above background art, it is necessary to provide a touch display module.

[0007] To solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A touch display module includes a backlight glue frame, a lower polarizer, a large glass sheet, a small glass sheet, an upper polarizer, frame glue, and a touch screen cover plate;

[0009] The backlight rubber frame is provided with a mounting groove. Along the direction from the bottom of the mounting groove to the notch of the mounting groove, the lower polarizer, the large glass sheet, the small glass sheet, and the upper polarizer are sequentially stacked, so that the notch of the mounting groove is flush with the surface of the upper polarizer.

[0010] The length of the upper polarizer is less than the length of the small glass sheet; the length of the small glass sheet is shorter than the length of the large glass sheet. When one end of the small glass sheet is flush with the large glass sheet, a vacancy is formed at the other end of the two; a driving IC is connected in the vacancy, and a flexible circuit board passing through the vacancy is provided on the side of the driving IC away from the small glass sheet.

[0011] The frame adhesive connects the touch screen cover plate with the backlight rubber frame and the upper polarizer.

[0012] It further includes a filling member, which is arranged to match the vacancy, and the filling member is used to fill the vacancy so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive.

[0013] Further, the thickness of the filling member is equal to the height of the vacancy.

[0014] Further, a clamping groove is provided on the surface of the backlight rubber frame, and the clamping groove is arranged on one side of the notch of the mounting groove, and the filling member is inserted into the clamping groove.

[0015] Further, the filling member has a structure with a U-shaped cross-section, and the clamping groove is arranged to match the filling member; when the filling member is embedded in the clamping groove, the outer surface of the U-shaped filling member is flush with the edge of the notch of the mounting groove.

[0016] Further, a clamping member is provided on the side wall of the clamping groove, and a snap groove is provided at a corresponding position on the side wall of the filling member to match the clamping member.

[0017] Further, the clamping member has a structure with a right-angled triangle cross-section or a right-angled trapezoid cross-section.

[0018] Further, when the filling member is embedded in the clamping groove, the two side walls at both ends of the U-shaped filling member are respectively flush with the surface on the opposite side of the backlight rubber frame.

[0019] Further, the filling member is an adhesive structure fixedly connected to the frame adhesive, and the structure of the adhesive structure is arranged to match the vacancy.

[0020] Further, the depth of the clamping groove is at most equal to the distance between the inner side wall and the outer side wall of the backlight rubber frame.

[0021] Further, the thickness of the adhesive structure is not less than the thickness of the upper polarizer.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model can fill the gap through a filling member to fix the driving IC and the flexible circuit board to the frame glue, avoiding the situation that there is a gap between the FPC and the IC positions of the lower glass sheet and the sponge pasted on the frame, resulting in the inability to paste. Specifically, along the direction from the bottom to the opening of the installation groove, the lower polarizer, the large glass sheet, the small glass sheet, and the upper polarizer are stacked in sequence, so that the opening of the installation groove is flush with the surface of the upper polarizer. Then, the filling member is used to fill the gap, and finally, the touch screen cover plate is connected to the backlight glue frame and the upper polarizer through the frame glue. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of the backlight glue frame provided by the prior art;

[0025] Figure 2 Schematic structural diagram when the upper polarizer provided by the prior art is installed in the backlight glue frame;

[0026] Figure 3 Schematic structural diagram when the driving IC and the flexible circuit board are connected provided by the prior art;

[0027] Figure 4 Schematic structural diagram of the touch screen cover plate provided by the utility model;

[0028] Figure 5 Schematic structural diagram of the backlight glue frame provided by the utility model;

[0029] Figure 6 Schematic structural diagram of the positioning member provided by the utility model;

[0030] Figure 7 Schematic structural diagram of the positioning groove provided by the utility model;

[0031] Figure 8 Schematic structural diagram when the filling member is fixed provided by the utility model;

[0032] Figure 9 Schematic side view structure diagram of the filling member provided by the utility model;

[0033] Figure 10 Schematic side view longitudinal section structure diagram of the filling member provided by the utility model;

[0034] Figure 11 Schematic front view structure diagram when the filling member is installed and connected to the touch screen cover plate provided by the utility model;

[0035] Figure 12 Schematic structural diagram of the snap groove provided by the utility model;

[0036] Figure 13A schematic diagram of the longitudinal cross-section structure of the touch screen cover provided by the utility model when connected to the filling piece;

[0037] Figure 14 This is a schematic diagram of the structure of the third embodiment of the present invention;.

[0038] The markings in the figure are as follows:

[0039] 1. Backlight plastic frame; 2. Lower polarizer; 3. Large piece of glass; 4. Small piece of glass; 5. Upper polarizer; 6. Frame glue; 7. Touch screen cover; 8. Installation slot; 9. Vacancy; 10. Positioning slot; 11. Filling piece; 12. Positioning piece; 13. Buckle slot. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0041] Flexible Printed Circuit: FPC is a flexible circuit board widely used in electronic devices. It is lightweight and flexible and is commonly used in mobile phones, cameras, wearable devices, etc.

[0042] IC (Driver IC) is an integrated circuit used to control specific components in electronic devices. The main function of driver IC is to provide the necessary current and voltage to drive electronic components or devices. Driver IC is widely used in various electronic products and systems.

[0043] As mentioned in the background technology, if the adhesive area is limited, the display screen module and the touch screen are likely to separate and fall off, especially for large-sized modules, which are more likely to fall off (see Figures 1 - 3 There is a gap between the FPC and IC positions of the lower glass and the frame sticker sponge, which makes it impossible to stick them, thus reducing the effective sticky area of the frame glue).

[0044] In order to solve this technical problem, the utility model provides a touch display module.

[0045] Specifically, please refer to Figures 1 - 14 , a touch display module, including a backlight glue frame 1, a lower polarizer 2, a large glass 3, a small glass 4, an upper polarizer 5, a frame glue 6 and a touch screen cover 7;

[0046] The backlight rubber frame 1 is provided with a mounting groove 8. Along the direction from the bottom of the mounting groove 8 to the notch, the lower polarizer 2, the large glass sheet 3, the small glass sheet 4, and the upper polarizer 5 are stacked in sequence, so that the notch of the mounting groove 8 is flush with the surface of the upper polarizer 5;

[0047] The length of the upper polarizer 5 is less than the length of the small glass sheet 4; the length of the small glass sheet 4 is shorter than the length of the large glass sheet 3. When one end of the small glass sheet 4 is flush with one end of the large glass sheet 3, a vacancy 9 is formed at the other end of the two; a driving IC is connected in the vacancy 9, and a flexible circuit board passing through the vacancy 9 is provided on the side of the driving IC away from the small glass sheet 4;

[0048] The frame adhesive 6 connects the touch screen cover plate 7 with the backlight rubber frame 1 and the upper polarizer 5;

[0049] It further includes a filling member 11, which is arranged to match the vacancy 9, and the filling member 11 is used to fill the vacancy 9 so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive 6.

[0050] The utility model can fill the vacancy 9 through the filling member 11 so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive 6, avoiding the situation that there is a gap between the positions of the FPC and the IC of the lower glass sheet and the frame paste sponge, resulting in inability to paste. Specifically, along the direction from the bottom of the mounting groove 8 to the notch, the lower polarizer 2, the large glass sheet 3, the small glass sheet 4, and the upper polarizer 5 are stacked in sequence, so that the notch of the mounting groove 8 is flush with the surface of the upper polarizer 5. Then, the filling member 11 is used to fill the vacancy 9, and finally, the touch screen cover plate 7 is connected to the backlight rubber frame 1 and the upper polarizer 5 through the frame adhesive 6.

[0051] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings.

[0052] It should be noted that, without conflict, the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other.

[0053] It should be noted that similar reference numerals and letters denote 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 subsequent drawings.

[0054] A touch display module includes a backlight rubber frame 1, a lower polarizer 2, a large glass sheet 3, a small glass sheet 4, an upper polarizer 5, a frame adhesive 6, and a touch screen cover plate 7;

[0055] The backlight rubber frame 1 is provided with a mounting groove 8. Along the direction from the bottom of the mounting groove 8 to the notch, the lower polarizer 2, the large glass sheet 3, the small glass sheet 4, and the upper polarizer 5 are stacked in sequence, so that the notch of the mounting groove 8 is flush with the surface of the upper polarizer 5;

[0056] The length of the upper polarizer 5 is less than the length of the small glass sheet 4; the length of the small glass sheet 4 is shorter than the length of the large glass sheet 3. When one end of the small glass sheet 4 is flush with one end of the large glass sheet 3, a vacancy 9 is formed at the other end of the two; a driving IC is connected in the vacancy 9, and a flexible circuit board passing through the vacancy 9 is provided on the side of the driving IC away from the small glass sheet 4;

[0057] The frame adhesive 6 connects the touch screen cover plate 7 with the backlight rubber frame 1 and the upper polarizer 5;

[0058] It further includes a filling member 11. The filling member 11 is arranged to match the vacancy 9, and the filling member 11 is used to fill the vacancy 9 so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive 6.

[0059] The utility model can fill the vacancy 9 through the filling member 11 so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive 6, avoiding the situation that there is a gap between the positions of the FPC and the IC of the lower glass sheet and the frame pasting sponge, resulting in inability to paste. Specifically, along the direction from the bottom of the mounting groove 8 to the notch, the lower polarizer 2, the large glass sheet 3, the small glass sheet 4, and the upper polarizer 5 are stacked in sequence, so that the notch of the mounting groove 8 is flush with the surface of the upper polarizer 5. Then, the filling member 11 is used to fill the vacancy 9, and finally, the touch screen cover plate 7 is connected to the backlight rubber frame 1 and the upper polarizer 5 through the frame adhesive 6.

[0060] In some specific embodiments, the thickness of the filling member 11 is equal to the height of the vacancy 9. With this design, the filling member 11 can fully fill the vacancy 9.

[0061] In some specific embodiments, the surface of the backlight rubber frame 1 is provided with a clamping groove 10. The clamping groove 10 is arranged on one side of the notch of the mounting groove 8, and the filling member 11 is inserted into the clamping groove 10. This is set to make the fixing of the filling member 11 more sufficient and prevent the situation of relative sliding with the backlight rubber frame 1.

[0062] For further optimization of the touch display module provided in Embodiment 1, the filling member 11 has a structure with a U-shaped longitudinal section, and the clamping groove 10 is arranged to match the filling member 11; when the filling member 11 is embedded in the clamping groove 10, the outer surface of the U-shaped filling member 11 is flush with the edge of the notch of the mounting groove 8. With this design, when the frame adhesive 6 connects the touch screen cover plate 7 with the backlight rubber frame 1 and the upper polarizer 5, there will be no protruding phenomenon, that is, the frame adhesive 6 is lifted by the filling member 11.

[0063] In some specific embodiments, a clamping member 12 is provided on the side wall of the clamping groove 10, and a snap groove 13 is correspondingly provided at a position on the side wall of the filling member 11 corresponding to the clamping member 12. With this design, the filling member 11 is fixed more firmly.

[0064] In some specific embodiments, the clamping member 12 has a structure with a right-angled triangle cross-section or a right-angled trapezoid cross-section. With this design, the inclined surface of the right-angled triangle structure or the right-angled trapezoid structure will contact the filling member 11, making the clamping process more convenient.

[0065] In some specific embodiments, when the filling member 11 is embedded in the clamping groove 10, the side walls at both ends of the U-shaped filling member 11 are flush with the surface on the opposite side of the backlight glue frame 1 respectively.

[0066] With this design, it is prevented that the side walls at both ends of the U-shaped filling member 11 bulge, affecting the assembly of the entire touch display module.

[0067] To further optimize the touch display module provided in Embodiment 1 or 2, the filling member 11 is an adhesive structure fixedly connected to the frame glue 6, and the structure of the adhesive structure is matched with the vacancy 9.

[0068] In some specific embodiments, the depth of the clamping groove 10 is at most equal to the distance between the inner side wall and the outer side wall of the backlight glue frame 1.

[0069] In some specific embodiments, the thickness of the adhesive structure is not less than the thickness of the upper polarizer 5.

[0070] The U-shaped filling member 11 needs to be fixed and the surface of each area needs to be controlled to be flush. The whole process is relatively complicated. To solve this problem, the adhesive structure can be fixed together with the frame glue 6. When fixing, it can be fully embedded in the clamping groove 10 (for example, Figure 14 , the adhesive structure is rectangular, matched with the vacancy 9, the clamping groove 10 is also rectangular, and does not exceed the outer side wall of the backlight glue frame 1) and limit the position of the upper polarizer 5 to prevent the upper polarizer 5 from sliding relatively when the frame glue 6 is fixed.

[0071] The use process of the touch display module provided by the present utility model is as follows: along the direction from the bottom to the opening of the installation groove 8, the lower polarizer 2, the large glass sheet 3, the small glass sheet 4 and the upper polarizer 5 are stacked in sequence, so that the opening of the installation groove 8 is flush with the surface of the upper polarizer 5. Then, the filling member 11 is used to fill the vacancy 9, and finally, the touch screen cover plate 7 is connected to the backlight glue frame 1 and the upper polarizer 5 through the frame glue 6.

[0072] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0073] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are given in the drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structure made by using the specification and drawings of the present utility model, directly or indirectly applied in other related technical fields, shall be within the scope of the patent protection of the present utility model by the same token.

Claims

1. A touch display module, characterized in that, It includes a backlight rubber frame (1), a lower polarizer (2), a large glass sheet (3), a small glass sheet (4), an upper polarizer (5), a frame adhesive (6), and a touch screen cover plate (7); The backlight rubber frame (1) is provided with a mounting groove (8). Along the direction from the bottom to the opening of the mounting groove (8), the lower polarizer (2), the large glass sheet (3), the small glass sheet (4), and the upper polarizer (5) are stacked in sequence, so that the opening of the mounting groove (8) is flush with the surface of the upper polarizer (5); The length of the upper polarizer (5) is less than the length of the small glass sheet (4); the length of the small glass sheet (4) is shorter than the length of the large glass sheet (3). When one end of the small glass sheet (4) is flush with one end of the large glass sheet (3), a vacancy (9) is formed at the other end of the two; a driving IC is connected in the vacancy (9), and a flexible circuit board passing through the vacancy (9) is provided on the side of the driving IC away from the small glass sheet (4); The frame adhesive (6) connects the touch screen cover plate (7) with the backlight rubber frame (1) and the upper polarizer (5); It further includes a filling member (11). The filling member (11) is arranged to match the vacancy (9), and the filling member (11) is used to fill the vacancy (9) so that the driving IC and the flexible circuit board are fixedly connected to the frame adhesive (6).

2. The touch display module according to claim 1, wherein, The thickness of the filling member (11) is equal to the height of the vacancy (9).

3. The touch display module according to claim 1, wherein A clamping groove (10) is provided on the surface of the backlight rubber frame (1). The clamping groove (10) is arranged on one side of the opening of the mounting groove (8), and the filling member (11) is inserted into the clamping groove (10).

4. The touch display module according to claim 3, wherein, The filling member (11) has a structure with a U-shaped longitudinal section, and the clamping groove (10) is arranged to match the filling member (11); when the filling member (11) is embedded in the clamping groove (10), the outer surface of the U-shaped filling member (11) is flush with the edge of the opening of the mounting groove (8).

5. The touch display module according to claim 4, wherein A clamping member (12) is provided on the side wall of the clamping groove (10), and a clamping groove (13) is arranged at the corresponding position on the side wall of the filling member (11) to match the clamping member (12).

6. The touch display module according to claim 5, wherein The clamping member (12) has a structure with a right-angled triangle or a right-angled trapezoid in longitudinal section.

7. The touch display module according to claim 6, wherein When the filling member (11) is embedded in the clamping groove (10), the side walls at both ends of the U-shaped filling member (11) are respectively flush with the surface on the opposite side of the backlight rubber frame (1).

8. The touch display module according to claim 3, wherein The filling member (11) is an adhesive structure fixedly connected to the frame adhesive (6), and the structure of the adhesive structure is arranged to match the vacancy (9).

9. The touch display module according to claim 8, wherein, The depth of the clamping groove (10) is at most equal to the distance between the inner side wall and the outer side wall of the backlight rubber frame (1).

10. The touch display module according to claim 9, wherein, The thickness of the adhesive structure is not less than the thickness of the upper polarizer (5).

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