CN219266925U

CN219266925U - Touch display screen, display device and electronic equipment

Info

Publication number: CN219266925U
Application number: CN202320195894.9U
Authority: CN
Inventors: 周小红; 田园; 孙如斌; 黄新玲; 袁广娇
Original assignee: Suzhou Weiyeda Technology Co ltd; Weiyeda Technology Jiangsu Co ltd
Current assignee: Suzhou Weiyeda Technology Co ltd; Weiyeda Technology Jiangsu Co ltd
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-06-27
Anticipated expiration: 2033-02-13

Abstract

The utility model relates to a touch display screen, a display device and electronic equipment. The touch display screen comprises a touch module and a display module which are arranged in a stacked mode, and the distance between the touch module and the display module is not more than 0.6mm; the touch module comprises a touch film, the touch film comprises a conductive layer, and the distance between the conductive layer and the display module is greater than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen. By applying the touch display screen of the technical scheme of the utility model, the influence of light refraction on the display effect can be reduced, thereby avoiding missing any detail in the picture and improving the visual display effect; meanwhile, as the distance between the conductive layer and the display module is larger than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen, the interference of the display module on the conductive layer is reduced, the touch sensitivity of the touch module is effectively improved, and the stability of the touch display screen is further improved.

Description

Touch display screen, display device and electronic equipment

Technical Field

The present utility model relates to the field of display technologies, and in particular, to a touch display screen, a display device, and an electronic device.

Background

The touch display screen is an inductive liquid crystal display system capable of receiving and responding to touch signals, and is composed of a touch module (TP) and a display module (OpenCell). At present, a combination mode between the touch module and the display module is generally a full-lamination scheme or a frame lamination scheme, as shown in fig. 1 and fig. 2 respectively.

Referring to fig. 1, a touch display screen 100' according to a conventional full-lamination scheme includes a touch module 110' and a display module 120', wherein the touch module 110' and the display module 120' are fully laminated by an adhesive 130', and the adhesive 130' may be OCA adhesive or OCR adhesive. There is no air layer between the touch module 110' and the display module 120', the visual display effect of the touch display screen 100' is clear, but because the thickness of OCA glue or OCR glue is generally 0.5 mm-0.8 mm, the cost of the material is higher, and meanwhile, the material needs to be prepared by professional equipment, the preparation cost is higher, and the yield is relatively lower.

Referring to fig. 2, a touch display screen 200 'of a conventional frame-pasting scheme includes a touch module 210' and a display module 220', and the touch module 210' and the display module 220 'are pasted along a frame by a frame-pasting adhesive 230'. The touch display screen adopting the frame pasting scheme has less frame pasting glue, and is beneficial to reducing the cost. However, in the touch display screen 200 'of the conventional frame-pasting scheme, a large air layer gap 240' is formed between the touch module 210 'and the display module 220', and the air layer gap 240 'is usually above 2mm, and the large air layer gap easily causes a large visual height difference and easily reflects light, so that the visual display effect of the touch display screen 200' is deteriorated. Therefore, the air layer gap between the touch module and the display module needs to be reduced as much as possible, however, the touch sensitivity of the touch module is also reduced, and the stability of the touch display screen is further reduced.

Disclosure of Invention

Based on this, it is necessary to provide a touch display screen, a display device and an electronic apparatus for the problem of how to improve the visual display effect and stability of the touch display screen at the same time.

The touch display screen comprises a touch module and a display module which are arranged in a stacked mode, wherein the distance between the touch module and the display module is not more than 0.6mm;

the touch module comprises a touch film, the touch film is a conductive layer, and the distance between the conductive layer and the display module is greater than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen.

By applying the touch display screen of the technical scheme, firstly, the distance between the touch module and the display module is not more than 0.6mm, so that the influence of light refraction on the display effect can be reduced, any detail in a picture is avoided from being omitted, and the visual display effect is improved; meanwhile, as the distance between the conductive layer and the display module is larger than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen, the interference of the display module on the conductive layer is reduced, the touch sensitivity of the touch module is effectively improved, and the stability of the touch display screen is further improved.

In one possible implementation, the distance between the conductive layer and the display module is greater than or equal to 0.25mm.

In one possible implementation, the distance between the conductive layer and the display module is 0.25mm to 0.4mm.

In one possible implementation manner, the touch control film further comprises a first substrate located on one side, close to the display module, of the conductive layer, and the thickness of the first substrate is 0.1-0.4 mm.

In one possible implementation, the touch control film further includes a bonding layer for bonding the first substrate and the conductive layer, the bonding layer being located between the first substrate and the conductive layer.

In one possible implementation, the bonding layer is an OCA adhesive layer or a SCA adhesive layer; the thickness of the bonding layer is 0.05 mm-0.25 mm.

In one possible implementation manner, the touch control film further comprises a second substrate located on one side of the conductive layer away from the first substrate, and the thickness of the second substrate is 0.05 mm-0.188 mm.

In one possible implementation, the first substrate and the second substrate are independently selected from at least one of a PET substrate, a PC substrate, and a PMMA substrate.

In one possible implementation manner, the touch display screen further comprises a mounting frame, the mounting frame comprises a bottom frame and a side frame surrounding and fixed on the periphery of the bottom frame, the bottom frame and the side frame jointly enclose an accommodating space for accommodating the display module, and the display module is located in the accommodating space.

In one possible implementation manner, the touch module further comprises a cover plate located on one side, away from the display module, of the touch film, the cover plate and the end, away from the bottom frame, of the side frame are bonded through a bonding piece, and the bonding piece is located at the edge position of the cover plate and surrounds the periphery of the touch film.

In one possible implementation, the adhesive member is a double-sided tape, the thickness of the double-sided tape is 0.2 mm-0.5 mm, the width of the double-sided tape is not less than 10mm, and the adhesiveness of the double-sided tape is not less than 2500gf/25mm.

In one possible implementation manner, the touch module is located in the accommodating space, and the edge of the touch film is bonded with the edge of the display module through the bonding piece.

In one possible implementation, the distance between the touch module and the display module is 0.05 mm-0.6 mm.

In one possible implementation, the adhesive member is a double-sided tape, the thickness of the double-sided tape is 0.05 mm-0.4 mm, the width of the double-sided tape is not less than 6mm, and the adhesiveness of the double-sided tape is not less than 2500gf/25mm.

A display device comprises any one of the touch display screens.

The display device of the technical scheme of the utility model has lower cost and better display effect, and the signal-to-noise ratio can meet the use requirement, has better touch sensitivity and stability, and is beneficial to application.

An electronic device comprises the display device.

The electronic equipment of the technical scheme of the utility model has lower cost and better display effect, and the signal-to-noise ratio can meet the use requirement, has better touch sensitivity and stability, and is beneficial to application.

Drawings

FIG. 1 is a schematic diagram of a touch display screen according to a conventional full-lamination scheme;

FIG. 2 is a schematic diagram of a touch display screen of a conventional frame-pasting scheme;

FIG. 3 is a schematic diagram of a touch display screen according to an embodiment of the utility model;

FIG. 4 is a schematic diagram of a touch film and a display module according to an embodiment of the utility model;

FIG. 5 is a schematic diagram of a touch film and a display module according to another embodiment of the utility model;

FIG. 6 is a schematic diagram of a touch display screen according to another embodiment of the present utility model;

FIG. 7 is a schematic diagram of a touch display screen according to another embodiment of the present utility model;

fig. 8 is a schematic diagram of a touch display screen according to embodiment 1 of the present utility model;

fig. 9 is a schematic diagram of a touch display screen according to embodiment 2 of the present utility model;

fig. 10 is a schematic diagram of a touch display screen according to embodiment 3 of the present utility model;

fig. 11 is a schematic diagram of a touch display screen according to embodiment 4 of the present utility model;

fig. 12 is a schematic diagram of a touch display screen according to embodiment 5 of the present utility model;

fig. 13 is a schematic diagram of a touch display screen according to embodiment 6 of the present utility model;

fig. 14 is an effect diagram of a touch display screen according to embodiment 2 of the present utility model;

fig. 15 is an effect diagram of the touch display screen of comparative example 1 of the present utility model.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 3 and fig. 4 together, the touch display screen 100 according to an embodiment of the utility model includes a touch module 110 and a display module 120 that are stacked, and a distance between the touch module 110 and the display module 120 is not greater than 0.6mm; the touch module 110 includes a touch film 130, the touch film 130 includes a conductive layer 131, and a distance h between the conductive layer 131 and the display module 120 is greater than or equal to a minimum distance obtained based on a target signal-to-noise ratio of the touch display 100.

The distance between the touch module 110 and the display module 120 refers to a distance between a lower surface of the touch module 110 and an upper surface of the display module 120. The distance between the touch module 110 and the display module 120 is not greater than 0.6mm, so that the influence of light refraction on the display effect can be reduced, any detail in the picture is avoided, and the visual display effect is improved.

The conductive layer 131 includes a body 1311, and a patterned grid groove is formed on the surface of the body 1311, and the grid groove is filled with a conductive material 1312. The body 1311 may be, for example, a photo-curable UV glue or a thermo-curable glue.

The display module 120 may be a liquid crystal display.

The signal-to-noise ratio refers to the signal-to-noise ratio of the whole touch display screen, and generally, according to the analog data display of the IC manufacturer, the signal-to-noise ratio of the whole touch display screen and the minimum distance between the conductive layer in the touch film and the liquid crystal display screen have the corresponding relationship shown in the following table 1.

TABLE 1 relationship between SNR and minimum distance between conductive layer to display module

Sequence number	Signal to noise ratio	Minimum distance (mm) between conductive layer and display module
			1	3:1	0.10
2	4:1	0.12
			3	5:1	0.25
4	6:1	0.35
			5	7:1	1.00

It should be noted that, the minimum distance between the conductive layer of the touch film and the display module in table 1 refers to the distance between the conductive layer closest to the display module in the touch film and the display module, specifically, the distance between the conductive layer and the two surfaces closest to the display module.

In the touch display screen 100 of the above embodiment, since the distance between the conductive layer 131 and the display module 120 is greater than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen 100, the interference of the display module 120 on the conductive layer 131 in the touch film 130 is reduced, so that the target signal-to-noise ratio of the entire touch display screen 100 meets the use requirement, and the touch display screen is beneficial to application.

Based on the foregoing embodiment, the distance h between the conductive layer 131 and the display module 120 is greater than or equal to 0.25mm. Thus, the signal to noise ratio of the whole touch display screen 100 can be controlled to be more than 5:1, which meets the requirements of the current mainstream IC manufacturers.

In the above embodiment, the distance h between the conductive layer 131 and the display module 120 is 0.25mm to 0.4mm. In this way, the signal to noise ratio of the whole touch display screen 100 can be controlled in a proper range, and meanwhile, the influence on other performances of the touch display screen caused by the overlarge distance between the conductive layer 131 and the display module 120 can be avoided.

Based on the foregoing embodiments, the touch film 130 further includes a first substrate 132 located on a side of the conductive layer 131 near the display module 120, as shown in fig. 4, where the thickness of the first substrate 132 is 0.1mm to 0.4mm. Further, the thickness of the first substrate 132 is 0.2mm to 0.4mm; or the thickness of the first substrate 132 is 0.3mm to 0.4mm. Still further, the thickness of the first substrate 132 may be, for example, 0.1mm, 0.2mm, 0.3mm, or 0.4mm.

It should be noted that, the touch film of the touch display screen of the present utility model is not limited to the above embodiment, and other functional layers may be further included in the touch film.

Referring to fig. 5, a touch film 230 according to another embodiment of the utility model includes a first substrate 231, a bonding layer 232, a first conductive layer 233, a second substrate 234, and a second conductive layer 235. In this embodiment, the distance h between the first conductive layer 233 closest to the display module 120 and the display module 120 is greater than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display 100.

The bonding layer 232 is used for bonding the first substrate 231 and the first conductive layer 233. Further, the bonding layer 232 is an OCA adhesive layer or an SCA adhesive layer; the thickness of the adhesive layer 232 is 0.05mm to 0.25mm. The thickness of the bonding layer 232 may be, for example, 0.05mm, 0.075mm, 0.1mm, 0.125mm, 0.15mm, 0.175mm, 0.2mm, 0.225m, or 0.25mm.

The thickness of the second substrate 234 is 0.05mm to 0.188mm based on the foregoing embodiment.

On the basis of the foregoing embodiment, the first substrate 231 and the second substrate 234 are independently selected from at least one of a PET substrate, a PC substrate, and a PMMA substrate.

It should be noted that the layer structure of the touch film is not limited, and the number of layers including the substrate and the conductive layer, the position of the conductive layer relative to the substrate, and the like are not limited. When the number of the conductive layers is at least two, the adjacent first conductive layers and second conductive layers can be respectively arranged on two sides of the same substrate, or can be respectively arranged on different substrates. In addition, the conductive layer may be concavely or convexly disposed on the substrate.

On the basis of the foregoing embodiment, referring to fig. 3, the touch display screen 100 of the present embodiment further includes a mounting frame 140, where the mounting frame 140 includes a bottom frame 141 and a side frame 142 surrounding and fixed to a periphery of the bottom frame 141, and the bottom frame 141 and the side frame 142 together enclose an accommodating space for accommodating the display module 120, and the display module 120 is located in the accommodating space.

Based on the foregoing embodiments, the touch module 110 further includes a cover 150 located on a side of the touch film 130 away from the display module 120.

Based on the foregoing embodiments, the touch module 110 is located in the accommodating space, and the edge of the touch film 130 and the edge of the display module 120 are adhered by the adhesive 160. The adhesive 160 may be disposed in the routing area of the touch module 110. This allows an air layer gap 170 between the touch module 110 and the display module 120, and the height of the air layer gap 170 is the same as the thickness of the adhesive 160.

Based on the foregoing embodiments, the distance between the touch module 110 and the display module 120 is 0.05mm to 0.6mm.

On the basis of the foregoing embodiment, the adhesive 160 is a double-sided tape having a thickness of 0.05mm to 0.4mm, a width of not less than 6mm, and a tackiness of not less than 2500gf/25mm. Further, the double-sided tape is preferably VHB tape.

It should be noted that, in the touch display screen of the present utility model, the connection manner between the touch module and the display module is not limited to the above embodiment.

Referring to fig. 6, a touch display screen 300 according to another embodiment of the utility model includes a touch module 310 and a display module 320 that are stacked, wherein a distance between the touch module 310 and the display module 320 is not greater than 0.6mm; the touch module 310 includes a touch film 330, the touch film 330 includes a conductive layer, and a distance h between the conductive layer and the display module 320 is greater than or equal to a minimum distance obtained based on a target signal-to-noise ratio of the touch display 300.

The touch display screen 300 of the present embodiment further includes a mounting frame 340, where the mounting frame 340 includes a bottom frame 341 and a side frame 342 surrounding and fixed to a periphery of the bottom frame 341, and the bottom frame 341 and the side frame 342 together enclose an accommodating space for accommodating the display module 320, and the display module 320 is located in the accommodating space.

In the touch display screen 300 of the present embodiment, the touch module 310 further includes a cover plate 350 located at a side of the touch film 330 away from the display module 320, the cover plate 350 and an end of the side frame 342 away from the bottom frame 341 are adhered by an adhesive member 360, and the adhesive member 360 is located at an edge position of the cover plate 350 and surrounds the periphery of the touch film 330. The adhesive member 360 may be disposed in the ink region of the cover plate 350, so as to avoid shielding the touch region of the touch film 330.

On the basis of the foregoing embodiment, the adhesive member 360 is a double-sided tape having a thickness of 0.2mm to 0.5mm, a width of not less than 10mm, and a tackiness of not less than 2500gf/25mm. Further, the double-sided tape is preferably VHB tape.

In the touch display 300 of the present embodiment, an air layer gap 370 exists between the touch module 310 and the display module 320. It is understood that the distance between the touch module 310 and the display module 320 can be further reduced.

Referring to fig. 7, a touch display screen 400 of another embodiment includes a touch module 410 and a display module 420 that are stacked, wherein a distance between the touch module 410 and the display module 420 is not greater than 0.6mm; the touch module 410 includes a touch film 430, the touch film 430 includes a conductive layer, and a distance h between the conductive layer and the display module 420 is greater than or equal to a minimum distance obtained based on a target signal-to-noise ratio of the touch display 300.

The touch display screen 400 of this embodiment further includes a mounting frame 440, where the mounting frame 440 includes a bottom frame 441 and a side frame 442 surrounding and fixed to a periphery of the bottom frame 441, and the bottom frame 441 and the side frame 442 together enclose an accommodating space for accommodating the display module 420, and the display module 420 is located in the accommodating space.

In the touch display screen 400 of the present embodiment, the touch module 410 further includes a cover 450 located at a side of the touch film 430 away from the display module 420, the end of the cover 450 away from the bottom frame 441 and the side frame 442 are adhered by an adhesive 460, and the adhesive 460 is located at an edge position of the cover 450 and surrounds the periphery of the touch film 430. The adhesive 460 may be disposed in the ink area of the cover plate 450, so as to avoid shielding the touch area of the touch film 430.

In this embodiment, the distance between the touch module 410 and the display module 420 is approximately 0, so as to further improve the display effect of the touch display screen 400.

By applying the touch display screen of the technical scheme, firstly, the distance between the touch module and the display module is not more than 0.6mm, so that the influence of light refraction on the display effect can be reduced, any detail in a picture is avoided from being omitted, and the visual display effect is improved; meanwhile, as the distance between the conductive layer and the display module is larger than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen, the interference of the display module on the conductive layer is reduced, the touch sensitivity of the touch module is effectively improved, and the stability of the touch display screen is further improved. In addition, in the touch display screen, the touch module and the display module are simple in lamination, low in cost, relatively easy to separate, small in breaking risk in the separation process and convenient to repair.

An embodiment of the display device includes any one of the touch display screens described above.

An electronic device according to an embodiment includes the display device described above.

The electronic device may be a smart phone, tablet, notebook or wearable smart device.

With reference to the foregoing embodiments, the technical solutions of the present application will be illustrated for the sake of more specific clarity and easier understanding, but it should be noted that the content to be protected by the present application is not limited to the following embodiments 1 to 6.

Example 1

Referring to fig. 8, the touch display screen 500 of embodiment 1 includes a touch module 510 and a display module 520 that are stacked, and a height of an air layer gap 530 between the touch module 510 and the display module 520 is 0.2mm.

The touch module 510 includes a touch film 540 and a cover plate 550 that are stacked, where the touch film 540 includes a first substrate 541, a first lamination layer 542, a first conductive layer 543, a second substrate 544, and a second conductive layer 545 that are sequentially stacked, and the touch film 540 and the cover plate 550 are adhered by the second lamination layer 560.

Wherein, the first substrate 541 is a transparent PET substrate with a thickness of 0.25mm, the first bonding layer 542 is an OCA adhesive layer with a thickness of 0.125mm, the thickness of the first conductive layer 543 is 0.005mm, the second substrate 544 is a transparent PET substrate with a thickness of 0.188mm, the thickness of the second conductive layer 545 is 0.005mm, and the second bonding layer 560 is an OCA adhesive layer with a thickness of 0.125 mm.

In addition, the touch display screen 500 of embodiment 1 further includes a mounting frame 570, the mounting frame 570 includes a bottom frame 571 and a side frame 572 surrounding and fixed to a periphery of the bottom frame 571, the bottom frame 571 and the side frame 572 together define an accommodating space for accommodating the display module 520, and the display module 520 is located in the accommodating space.

The end of the side frame 572 away from the bottom frame 571 is adhered to the cover plate 550 by an adhesive 580, and the adhesive 580 is located at an edge position of the cover plate 550 and surrounds the periphery of the touch film 540. The adhesive 580 is a VHB glue having a thickness of 0.1mm, a width of 6mm, and a tack of 2500gf/25mm.

In the touch display screen 500 of embodiment 1, a distance between the first conductive layer 543 of the touch module 510 and the display module 520 is 0.575mm, which specifically includes: the thickness of the first substrate 541 is 0.25mm, the thickness of the first lamination layer 542 is 0.125mm, and the height of the air layer gap 530 between the touch module 510 and the display module 520 is 0.2mm. As can be seen, the touch display screen 500 of embodiment 1 can meet the signal-to-noise ratio requirement.

Example 2

Referring to fig. 9, the touch display screen 600 of embodiment 2 includes a touch module 610 and a display module 620 that are stacked, and a height of an air layer gap 630 between the touch module 610 and the display module 620 is 0.1mm.

The touch module 610 includes a touch film 640 and a cover plate 650 that are stacked, where the touch film 640 includes a first substrate 641, a first lamination layer 642, a first conductive layer 643, a second substrate 644, and a second conductive layer 645 that are stacked in sequence, and the touch film 640 and the cover plate 650 are bonded by the second lamination layer 660.

Wherein, the first substrate 641 is a transparent PET substrate with a thickness of 0.25mm, the first bonding layer 642 is an OCA adhesive layer with a thickness of 0.125mm, the first conductive layer 643 is a transparent PET substrate with a thickness of 0.005mm, the second substrate 644 is a transparent PET substrate with a thickness of 0.188mm, the second conductive layer 645 is a transparent PET substrate with a thickness of 0.005mm, and the second bonding layer 660 is an OCA adhesive layer with a thickness of 0.125 mm.

In embodiment 2, the edge of the touch film 640 and the edge of the display module 620 are adhered by the adhesive 670. The adhesive member 670 is a VHB adhesive having a thickness of 0.1mm, a width of 6mm, and a tack of 2500gf/25mm.

In the touch display screen 600 of embodiment 2, the distance between the first conductive layer 643 of the touch module 610 and the display module 620 is 0.475mm, which specifically includes: the thickness of the first substrate 641 is 0.25mm, the thickness of the first adhesive layer 642 is 0.125mm, and the height of the air layer gap 630 between the touch module 610 and the display module 620 is 0.1mm. As can be seen, the touch display screen 600 of embodiment 2 can meet the signal-to-noise ratio requirement.

Example 3

Referring to fig. 10, the touch display screen 700 of embodiment 3 includes a touch module 710 and a display module 720 that are stacked, and the height of the air layer gap 730 between the touch module 710 and the display module 720 is 0.2mm.

The touch module 710 includes a touch film 740 and a cover plate 750 that are stacked, where the touch film 740 includes a first substrate 741, a first conductive layer 742, a first lamination layer 743, a second substrate 744, and a second conductive layer 745 that are stacked in sequence, and the touch film 740 and the cover plate 750 are adhered by the second lamination layer 760.

Wherein, the first substrate 741 is a transparent PET substrate with a thickness of 0.25mm, the thickness of the first conductive layer 742 is 0.005mm, the first bonding layer 743 is an OCA adhesive layer with a thickness of 0.125mm, the second substrate 744 is a transparent PET substrate with a thickness of 0.188mm, the thickness of the second conductive layer 745 is 0.005mm, and the second bonding layer 760 is an OCA adhesive layer with a thickness of 0.125 mm.

In addition, the touch display screen 700 of embodiment 3 further includes a mounting frame 770, where the mounting frame 770 includes a bottom frame 771 and a side frame 772 surrounding and fixed to a periphery of the bottom frame 771, and the bottom frame 771 and the side frame 772 together enclose an accommodating space for accommodating the display module 720, and the display module 720 is located in the accommodating space.

The end of the side frame 772 away from the bottom frame 771 is adhered to the cover 750 by an adhesive member 760, and the adhesive member 760 is located at the edge of the cover 750 and surrounds the periphery of the touch film 740. The adhesive member 760 is a VHB paste having a thickness of 0.1mm, a width of 6mm, and a tack of 2500gf/25mm.

In the touch display screen 700 of embodiment 3, the distance between the first conductive layer 742 of the touch module 710 and the display module 720 is 0.45mm, which specifically includes: the thickness of the first substrate 741 is 0.25mm and the height of the air layer gap 730 between the touch module 710 and the display module 720 is 0.2mm. As can be seen, the touch display screen 700 of embodiment 3 can meet the signal-to-noise ratio requirement.

Example 4

Referring to fig. 11, the touch display screen 800 of embodiment 4 includes a touch module 810 and a display module 820 that are stacked, and the height of the air layer gap 830 between the touch module 810 and the display module 820 is 0.1mm.

The touch module 810 includes a touch film 840 and a cover plate 850 that are stacked together, where the touch film 840 includes a first substrate 841, a first conductive layer 842, a first lamination layer 843, a second substrate 844, and a second conductive layer 845 that are stacked together in sequence, and the touch film 840 and the cover plate 850 are bonded together by the second lamination layer 860.

Wherein, the first substrate 841 is a transparent PET substrate with a thickness of 0.25mm, the first conductive layer 842 has a thickness of 0.005mm, the first adhesive layer 843 is an OCA adhesive layer with a thickness of 0.125mm, the second substrate 844 is a transparent PET substrate with a thickness of 0.188mm, the second conductive layer 845 has a thickness of 0.005mm, and the second adhesive layer 860 is an OCA adhesive layer with a thickness of 0.125 mm.

In embodiment 4, the edge of the touch film 840 and the edge of the display module 820 are bonded by the bonding member 870. The adhesive 870 is VHB glue, the thickness of the VHB glue is 0.1mm, the width of the VHB glue is 6mm, and the viscosity of the VHB glue is 2500gf/25mm.

In the touch display screen 800 of the present embodiment, the distance between the touch module 810 and the display module 820 (i.e. the height of the air layer gap 830) is equal to the thickness of VHB adhesive, which is 0.1mm.

In the touch display screen 800 of embodiment 4, the distance between the first conductive layer 842 of the touch module 810 and the display module 820 is 0.35mm, which specifically includes: the thickness of the first substrate 841 is 0.25mm and the height of the air layer gap 830 between the touch module 810 and the display module 820 is 0.1mm. As can be seen, the touch display screen 800 of embodiment 4 can meet the signal-to-noise ratio requirement.

Example 5

Referring to fig. 12, the touch display screen 900 of embodiment 5 includes a touch module 910 and a display module 920 that are stacked, and a height of an air layer gap 930 between the touch module 910 and the display module 920 is 0.2mm.

The touch module 910 includes a touch film 940 and a cover plate 950 that are stacked, where the touch film 940 includes a first substrate 941, a first conductive layer 942, and a second conductive layer 943 that are stacked in sequence, and the touch film 940 and the cover plate 950 are bonded by a bonding layer 960.

Wherein, the first substrate 941 is a transparent PET substrate with a thickness of 0.25mm, the thickness of the first conductive layer 942 is 0.005mm, the thickness of the second conductive layer 943 is 0.005mm, and the bonding layer 960 is an OCA adhesive layer with a thickness of 0.125 mm.

In addition, the touch display screen 900 of embodiment 5 further includes a mounting frame 970, the mounting frame 970 includes a bottom frame 971 and a side frame 972 surrounding and fixed on the periphery of the bottom frame 971, the bottom frame 971 and the side frame 972 together enclose an accommodating space for accommodating the display module 920, and the display module 920 is located in the accommodating space.

The end of the side frame 972 away from the bottom frame 971 is bonded to the cover 950 by an adhesive 980, and the adhesive 980 is located at an edge of the cover 950 and surrounds the periphery of the touch film 940. The bonding member 980 was a VHB paste, the thickness of the VHB paste was 0.1mm, the width of the VHB paste was 6mm, and the tackiness of the VHB paste was 2500gf/25mm.

In the touch display screen 900 of embodiment 5, the distance between the first conductive layer 942 of the touch module 910 and the display module 920 is 0.45mm, which specifically includes: the thickness of the first substrate 941 is 0.25mm and the height of the air layer gap 930 between the touch module 910 and the display module 920 is 0.2mm. From this, the touch display screen 900 of embodiment 5 can meet the signal-to-noise ratio requirement.

Example 6

Referring to fig. 13, the touch display screen 1000 of embodiment 6 includes a touch module 1010 and a display module 1020 that are stacked, and a height of an air layer gap 1030 between the touch module 1010 and the display module 1020 is 0.1mm.

The touch module 1010 includes a touch film 1040 and a cover plate 1050 that are stacked, where the touch film 1040 includes a first substrate 1041, a first conductive layer 1042, and a second conductive layer 1043 that are stacked in sequence, and the touch film 1040 and the cover plate 1050 are bonded by a bonding layer 1060.

Wherein, the first substrate 1041 is a transparent PET substrate with a thickness of 0.25mm, the thickness of the first conductive layer 1042 is 0.005mm, the thickness of the second conductive layer 1043 is 0.005mm, and the bonding layer 1060 is an OCA adhesive layer with a thickness of 0.125 mm.

In embodiment 6, the edge of the touch film 1040 and the edge of the display module 1020 are adhered by the adhesive 1070. The adhesive 1070 was VHB glue, the thickness of the VHB glue was 0.1mm, the width of the VHB glue was 6mm, and the tack of the VHB glue was 2500gf/25mm.

In the touch display screen 1000 of the present embodiment, the distance between the touch module 1010 and the display module 1020 (i.e. the height of the air layer gap 1030) is equal to the thickness of VHB adhesive, which is 0.1mm.

In the touch display screen 1000 of embodiment 6, a distance between the first conductive layer 1042 of the touch module 1010 and the display module 1020 is 0.35mm, which specifically includes: the thickness of the first substrate 1041 is 0.25mm and the height of the air layer gap 1030 between the touch module 1010 and the display module 1020 is 0.1mm. From this, the touch display screen 1000 of embodiment 6 can meet the signal-to-noise ratio requirement.

Comparative example 1

Comparative example 1 is a comparative example of example 2, a touch display screen is provided, and the same structure as that of the touch display screen of example 2 is provided, and the difference between comparative example 1 and example 2 is that the height of the air layer gap between the touch module and the display module is 2mm.

The effects of the touch display screens of example 2 and comparative example 1 are shown in fig. 14 and 15, respectively. As can be seen from a comparison between fig. 14 and fig. 15, the display effect of the touch display screen of embodiment 2 is better than that of the touch display screen of comparative example 1, which indicates that in the touch display screen of the utility model, the air layer gap between the touch module and the display module is smaller, so that the influence of light refraction on the display effect can be reduced, any detail in the picture can be avoided, and the visual experience is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The touch display screen is characterized by comprising a touch module and a display module which are arranged in a stacked mode, wherein the distance between the touch module and the display module is not more than 0.6mm;

the touch module comprises a touch film, the touch film comprises a conductive layer, and the distance between the conductive layer and the display module is greater than or equal to the minimum distance obtained based on the target signal-to-noise ratio of the touch display screen.

2. The touch display screen of claim 1, wherein a distance between the conductive layer and the display module is greater than or equal to 0.25mm.

3. The touch display screen according to claim 1 or 2, wherein a distance between the conductive layer and the display module is 0.25 mm-0.4 mm.

4. The touch display screen according to claim 1, wherein the touch film further comprises a first substrate located on one side of the conductive layer close to the display module, and the thickness of the first substrate is 0.1 mm-0.4 mm.

5. The touch display screen of claim 4, wherein the touch film further comprises a bonding layer for bonding the first substrate and the conductive layer, the bonding layer being located between the first substrate and the conductive layer.

6. The touch display screen of claim 5, wherein the bonding layer is an OCA layer or a SCA layer; the thickness of the bonding layer is 0.05 mm-0.25 mm.

7. The touch display screen of claim 4, wherein the touch film further comprises a second substrate on a side of the conductive layer away from the first substrate, and the second substrate has a thickness of 0.05mm to 0.188mm.

8. The touch display screen of claim 7, wherein the first substrate and the second substrate are independently selected from at least one of a PET substrate, a PC substrate, and a PMMA substrate.

9. The touch display screen according to claim 1, further comprising a mounting frame, wherein the mounting frame comprises a bottom frame and a side frame surrounding and fixed to the periphery of the bottom frame, the bottom frame and the side frame jointly enclose an accommodating space for accommodating the display module, and the display module is located in the accommodating space.

10. The touch display screen according to claim 9, wherein the touch module further comprises a cover plate located on one side of the touch film away from the display module, the cover plate and the end portion of the side frame away from the bottom frame are bonded through an adhesive piece, and the adhesive piece is located at an edge position of the cover plate and surrounds the periphery of the touch film.

11. The touch display screen according to claim 10, wherein the adhesive member is a double-sided tape, the thickness of the double-sided tape is 0.2mm to 0.5mm, the width of the double-sided tape is not less than 10mm, and the adhesiveness of the double-sided tape is not less than 2500gf/25mm.

12. The touch display screen of claim 9, wherein the touch module is located in the accommodating space, and an edge of the touch film is bonded to an edge of the display module through an adhesive.

13. The touch display screen of claim 12, wherein a distance between the touch module and the display module is 0.05mm to 0.6mm.

14. The touch display screen according to claim 12, wherein the adhesive member is a double-sided tape, the thickness of the double-sided tape is 0.05 mm-0.4 mm, the width of the double-sided tape is not less than 6mm, and the adhesiveness of the double-sided tape is not less than 2500gf/25mm.

15. A display device comprising the touch display screen of any one of claims 1 to 14.

16. An electronic device comprising the display device according to claim 15.