Touch screen and display device

Abstract

The present invention discloses a touch screen and a display device, wherein the touch screen comprises: a touch component, the touch component comprises a first layer and a second layer, the first layer is on the upper side of the second layer, the first layer comprises a plurality of first electrodes arranged in parallel and spaced apart, the second layer comprises a plurality of second electrodes arranged in parallel and spaced apart, the first electrode and the second electrode both comprise a first metal grid; and a display component connected to the upper side or the lower side of the touch component, the display component comprises a display layer, the display layer comprises a second metal grid, and a plurality of display units installed at the intersection of the second metal grid; wherein, on the plane where the touch screen is located, the angle between the vertical projection of the first metal grid and the vertical projection of the second metal grid is 30° to 60°. The touch screen of the technical solution of the present invention can prevent the generation of moiré when in use.

Description

Technical Field

[0001] The present invention relates to the field of touch screen display technology, and in particular to a touch screen and a display device. Background Art

[0002] Metal mesh touch screens have replaced indium tin oxide (ITO) as the preferred material for touch screens due to their low manufacturing cost, bendability, low square resistance, and fast signal transmission speed. However, metal mesh touch screens often have moiré problems during use. Summary of the invention

[0003] The main purpose of the present invention is to provide a touch screen, aiming to solve the problem of moiré patterns appearing when the touch screen is in use.

[0004] To achieve the above object, the touch screen provided by the present invention comprises:

[0005] A touch component, the touch component comprising a first layer and a second layer, the first layer being on the upper side of the second layer, the first layer comprising a plurality of first electrodes arranged in parallel and spaced apart, the second layer comprising a plurality of second electrodes arranged in parallel and spaced apart, and the first electrode and the second electrode both comprising a first metal grid; and

[0006] A display component connected to the upper side or the lower side of the touch component, wherein the display component includes a display layer, and the display layer includes a second metal grid and a plurality of display units installed on the intersections of the second metal grid;

[0007] Among them, on the plane where the touch screen is located, the angle between the vertical projection of the first metal grid and the vertical projection of the second metal grid is 30° to 60°, the vertical projection of the first electrode partially overlaps with the vertical projection of the second electrode, and the first electrode and the second electrode form a touch detection capacitor at the intersection.

[0008] Optionally, the first metal grid includes a plurality of first metal wires arranged in parallel and spaced apart, and a plurality of second metal wires arranged in parallel and spaced apart, the first metal wires and the second metal wires are cross-connected to form a grid, the second metal grid includes a plurality of third metal wires arranged in parallel and spaced apart, and a plurality of fourth metal wires arranged in parallel and spaced apart, the first metal wires and the second metal wires are cross-connected to form a grid, and on the plane where the touch screen is located, the angle between the vertical projection of the first metal wire or the second metal wire and the vertical projection of the third metal wire or the fourth metal wire is 30° to 60°.

[0009] Optionally, on the plane where the touch screen is located, an angle between a vertical projection of the first metal line or the second metal line and a vertical projection of the third metal line or the fourth metal line is 45°.

[0010] Optionally, an included angle between the first metal wire and the second metal wire is 10° to 80°.

[0011] Optionally, an included angle between the first metal wire and the second metal wire is 30° to 60°.

[0012] Optionally, the touch screen further includes a connection layer, and the connection layer connects the display component and the touch component.

[0013] Optionally, the touch component further includes an insulating layer, and the insulating layer connects the first layer and the second layer.

[0014] Optionally, the display assembly further includes a substrate connected to the lower surface of the display layer.

[0015] Optionally, the display assembly further includes a flexible layer, and the flexible layer is connected to the lower surface of the substrate.

[0016] Optionally, the display unit is Mini-LED.

[0017] The present invention further provides a display device, comprising any of the above-mentioned touch screens.

[0018] The technical solution of the present invention prevents mutual interference between the first metal grid and the second metal grid by making the angle between the vertical projections of the first metal grid and the second metal grid on the plane where the touch screen is located be 30° to 60°, thereby preventing the touch screen from generating moiré patterns when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of moiré patterns generated by stacking a first metal grid and a second metal grid in the prior art;

[0021] Figure 2 This is a schematic diagram of the structure of a first metal grid and a second metal grid stacked in an embodiment of a touch screen of the present invention;

[0022] Figure 3 It is a structural schematic diagram of an embodiment of a touch screen of the present invention;

[0023] Figure 4 for Figure 3Schematic diagram of the structure of the first layer in ;

[0024] Figure 5 for Figure 3 The structural diagram of the second layer in FIG.

[0025] Figure 6 for Figure 3 A schematic diagram of the structure of the vertical projection of the first layer and the second layer on the plane where the touch screen is located;

[0026] Figure 7 FIG. 1 is a schematic structural diagram of another embodiment of a touch screen of the present invention.

[0027] Description of Figure Numbers:

[0028] Label name Label name 100 touchscreen 15 Touch detection point 10 Touch components 20 Display Components 11 First layer 21 Display Layer 111 First electrode 22 Second metal grid 12 Second layer 221 The third metal wire 121 Second electrode 222 Fourth metal wire 13 First Metal Grid 23 Base 131 First metal wire 24 Flexible layer 132 Second metal wire 30 Connection Layer 14 Insulation layer

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention provides a touch screen 100 .

[0034] In the embodiment of the present invention, Figure 2-Figure 7As shown, the touch screen 100 includes:

[0035] A touch component 10, the touch component 10 comprising a first layer 11 and a second layer 12, the first layer 11 being on the upper side of the second layer 12, the first layer 11 comprising a plurality of first electrodes 111 arranged in parallel and spaced apart, the second layer 12 comprising a plurality of second electrodes 121 arranged in parallel and spaced apart, the first electrodes 111 and the second electrodes 121 both comprising a first metal grid 13; and

[0036] A display component 20 connected to the upper side or the lower side of the touch component 10, wherein the display component 20 includes a display layer 21, and the display layer 21 includes a second metal grid 22 and a plurality of display units installed on the intersections of the second metal grid 22;

[0037] Among them, on the plane where the touch screen 100 is located, the angle between the vertical projection of the first metal grid 13 and the vertical projection of the second metal grid 22 is 30° to 60°, the vertical projection of the first electrode 111 partially overlaps with the vertical projection of the second electrode 121, and the first electrode 111 and the second electrode 121 form a touch detection capacitor at the intersection.

[0038] Moiré is a natural interference phenomenon that occurs when two independent periodic repeats are superimposed at a predetermined angle. Moiré appears as wavy curves, ripples, and beams that are seen when superimposed with a screen display image, and it means that there is a change in light intensity. Figure 1 As shown, on the plane where the touch screen 100 is located, when the vertical projection of the first metal grid 13 and the vertical projection of the second metal grid 22 are stacked in parallel, the first metal grid 13 and the second metal grid 22 will interfere with each other, thereby generating moiré patterns.

[0039] like Figure 2 As shown, in the technical solution provided by the embodiment of the present invention, the angle θ between the vertical projections of the first metal grid 13 and the second metal grid 22 on the plane where the touch screen 100 is located is 30° to 60 degrees, which is non-parallel, thereby preventing the first metal grid 13 and the second metal grid 22 from interfering with each other, making it impossible for the user to recognize the intensity change caused by the stacking, that is, the third repetition interval formed by the first metal grid 13 and the second metal grid 22 is equal to or less than the interval that can be distinguished by the human eye, so as to prevent the touch screen 100 from generating moiré when in use.

[0040] Specifically, the first electrode 111 is arranged along the first direction, and the second electrode 121 is arranged along the second direction. On the plane where the touch screen 100 is located, the vertical projection of the first electrode 111 partially overlaps with the vertical projection of the second electrode 121. The first electrode 111 and the second electrode 121 form a touch detection capacitor at the intersection, corresponding to a touch detection point 15. The intersection can be understood as the area where the overlapping part of the vertical projection of the first electrode 111 and the second electrode 121 on the plane where the touch screen 100 is located. By detecting whether the touch detection capacitor changes, it can be determined whether the touch detection point 15 is touched.

[0041] In this embodiment, the first direction is perpendicular to the second direction; in other embodiments, the first direction may intersect with the second direction but not be perpendicular to it, and the intersection angle is not particularly limited here.

[0042] In this embodiment, the first layer 11 is a sensing layer, the first electrodes 111 are sensing electrodes, the second layer 12 is a driving layer, and the second electrodes 121 are driving electrodes.

[0043] In this embodiment, the thickness of the touch component 10 is 375 microns, and the thickness of the first layer 11 and the thickness of the second layer 12 are both 125 microns. In other embodiments, the thickness of the touch component 10, the first layer 11 and the second layer 12 can take other values, which are not limited.

[0044] Further, such as Figure 4 and Figure 5 As shown, the spacing between the plurality of first electrodes 111 and the spacing between the plurality of second electrodes 121 are both greater than 1 micrometer to prevent short circuits between the electrodes.

[0045] In this embodiment, the spacing between the plurality of first electrodes 111 and the spacing between the plurality of second electrodes 121 are both 1 micrometer to 5 micrometers.

[0046] Further, such as Figure 3 and Figure 7 As shown, the touch component 10 further includes an insulating layer 14 , and the insulating layer 14 connects the first layer 11 and the second layer 12 .

[0047] Specifically, the upper surface of the insulating layer 14 is connected to the lower surface of the first layer 11 , and the lower surface of the insulating layer 14 is connected to the upper surface of the second layer 12 to keep the first electrode 111 in the first layer 11 and the second electrode 121 in the second layer 12 electrically isolated from each other.

[0048] The insulating layer 14 completely covers the lower surface of the first layer 11 and the upper surface of the second layer 12 .

[0049] In this embodiment, the insulating layer 14 is made of OCA optical adhesive and has excellent optical properties. In other embodiments, the insulating layer 14 may be made of materials such as TPU or TPE, and no further limitation is given to this.

[0050] In this embodiment, the thickness of the insulating layer 14 is 125 micrometers. In other embodiments, the thickness of the insulating layer 14 can be other values, which are not limited here.

[0051] Further, such as Figure 2 As shown, the first metal grid 13 includes a plurality of first metal wires 131 arranged in parallel and spaced apart, and a plurality of second metal wires 132 arranged in parallel and spaced apart, the first metal wires 131 and the second metal wires 132 are cross-connected to form a grid, the second metal grid 22 includes a plurality of third metal wires 221 arranged in parallel and spaced apart, and a plurality of fourth metal wires 222 arranged in parallel and spaced apart, the first metal wires 131 and the second metal wires 132 are cross-connected to form a grid, and on the plane where the touch screen 100 is located, an angle θ between a vertical projection of the first metal wire 131 or the second metal wire 132 and a vertical projection of the third metal wire 221 or the fourth metal wire 222 is 30° to 60°.

[0052] Specifically, the metal wire is made of metallic silver, or metallic copper, or an alloy containing silver, or an alloy material containing copper, or a metal oxide containing copper, or a metal oxide containing silver.

[0053] The first metal wires 131 are arranged along the third direction, the second metal wires 132 are arranged along the fourth direction, the third metal wires 221 are arranged along the fifth direction, and the fourth metal wires 222 are arranged along the sixth direction.

[0054] In this embodiment, the fifth direction is perpendicular to the sixth direction. In other embodiments, the fifth direction and the sixth direction may intersect but not be perpendicular, and the intersection angle is not limited here.

[0055] The vertical projection of each first metal line 131 or the second metal line 132 on the plane where the touch screen 100 is located intersects with the vertical projection of each third metal line 221 or the fourth metal line 222 on the plane where the touch screen 100 is located, and the angles of intersection between the vertical projection of each first metal line 131 on the plane where the touch screen 100 is located and the vertical projection of each third metal line 221 or the fourth metal line 222 on the plane where the touch screen 100 is located are not necessarily the same, but the intersection angle θ is between 30° and 60°, that is, the vertical projection of the first metal line 131 on the plane where the touch screen 100 is located will intersect with the vertical projection of the third metal line 221 or the fourth metal line 222 on the plane where the touch screen 100 is located, and the vertical projection of the second metal line 132 on the plane where the touch screen 100 is located will intersect with the vertical projection of the third metal line 221 or the fourth metal line 222 on the plane where the touch screen 100 is located, which can effectively prevent the first metal grid 13 and the second metal grid 22 from interfering with each other.

[0056] It should be noted that, in actual applications, the metal wire is not a straight line, but an irregular broken line with a certain degree of tortuosity. Taking the first metal wire 131 as an example, the first metal wire 131 as a whole extends in the third direction, but the first metal wire 131 is divided into multiple straight line segments, the extension directions of these straight line segments may be different, and the lengths of each straight line segment may also be different. Figure 2 The purpose of drawing the metal wire as a straight line is only to facilitate understanding and does not limit the shape of the metal wire.

[0057] Preferably, on the plane where the touch screen 100 is located, the angle θ between the vertical projection of the first metal line 131 or the second metal line 132 and the vertical projection of the third metal line 221 or the fourth metal line 222 is 45°, which can effectively prevent the first metal grid 13 and the second metal grid 22 from interfering with each other.

[0058] Further, such as Figure 2 As shown, the included angle β between the first metal wire 131 and the second metal wire 132 is 10° to 80°.

[0059] Specifically, in this embodiment, the angle between the third direction and the fourth direction is 10° to 80°, and the grid of the first metal grid 13 is rhombus. In other embodiments, the third direction and the fourth direction are perpendicular, and the grid of the first metal grid 13 is square.

[0060] Preferably, an included angle β between the first metal wire 131 and the second metal wire 132 is 30° to 60°.

[0061] Further, such as Figure 3 and Figure 7As shown, the display assembly 20 further includes a substrate 23 , and the substrate 23 is connected to the lower surface of the display layer 21 .

[0062] Specifically, the upper surface of the substrate 23 is connected to the lower surface of the display layer 21 .

[0063] The substrate 23 is a thin film transistor (TFT) circuit layer, which has the advantages of fast response speed, high brightness, and high contrast.

[0064] Further, such as Figure 3 and Figure 7 As shown, the display assembly 20 further includes a flexible layer 24 , and the flexible layer 24 is connected to the lower surface of the substrate 23 .

[0065] Specifically, the upper surface of the flexible layer 24 is connected to the lower surface of the base 23 .

[0066] The flexible layer 24 is provided to make the touch screen 100 a flexible screen, so that the touch screen 100 can adapt to more usage scenarios.

[0067] The material of the flexible layer 24 includes, but is not limited to, polyethylene terephthalate (PET), polyimide (PI), polycarbonate (PC), polymethyl methacrylate (PMMA), or UV resin.

[0068] Further, such as Figure 3 and Figure 7 As shown, the touch screen 100 further includes a connection layer 30 , and the connection layer 30 connects the display component 20 and the touch component 10 .

[0069] Specifically, when the display component 20 is connected to the upper side of the touch component 10, the lower surface of the connecting layer 30 is connected to the upper surface of the first layer 11, and the upper surface of the connecting layer 30 is connected to the lower surface of the flexible layer 24; when the display component 20 is connected to the lower side of the touch component 10, the upper surface of the connecting layer 30 is connected to the lower surface of the second layer 12, and the lower surface of the connecting layer 30 is connected to the upper surface of the display layer 21.

[0070] The connection layer 30 is made of OCA optical adhesive and has good optical properties.

[0071] When the display component 20 is connected to the upper side of the touch component 10, the connecting layer 30 completely covers the upper surface of the first layer 11 and the lower surface of the flexible layer 24; when the display component 20 is connected to the lower side of the touch component 10, the connecting layer 30 completely covers the lower surface of the second layer 12 and the upper surface of the display layer 21.

[0072] In this embodiment, the thickness of the connection layer 30 is 125 micrometers. In other embodiments, the thickness of the connection layer 30 can be other values, which are not limited to this.

[0073] Furthermore, the display unit is Mini-LED.

[0074] Mini-LED can miniaturize the LED dot pitch, thereby improving the screen resolution and display effect.

[0075] It should be noted that in this embodiment, the display unit is Mini-LED. In other embodiments, the display unit may be Micro-LED or OLED.

[0076] The present invention further proposes a display device, which includes a touch screen 100. The specific structure of the touch screen 100 refers to the above embodiment. Since the display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0077] The display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A touch screen, characterized in that: include: A touch component, the touch component comprising a first layer and a second layer, the first layer being on the upper side of the second layer, the first layer comprising a plurality of first electrodes arranged in parallel and spaced apart, the second layer comprising a plurality of second electrodes arranged in parallel and spaced apart, and the first electrode and the second electrode both comprising a first metal grid; as well as A display component connected to the upper side or the lower side of the touch component, wherein the display component includes a display layer, and the display layer includes a second metal grid and a plurality of display units installed on the intersections of the second metal grid; Wherein, on the plane where the touch screen is located, the angle between the vertical projection of the first metal grid and the vertical projection of the second metal grid is 30° to 60°, the vertical projection of the first electrode partially overlaps with the vertical projection of the second electrode, and the first electrode and the second electrode form a touch detection capacitor at the intersection; The first metal grid includes a plurality of first metal wires arranged in parallel and spaced apart, and a plurality of second metal wires arranged in parallel and spaced apart, the first metal wires and the second metal wires are cross-connected to form a grid, the second metal grid includes a plurality of third metal wires arranged in parallel and spaced apart, and a plurality of fourth metal wires arranged in parallel and spaced apart, the first metal wires and the second metal wires are cross-connected to form a grid, and on the plane where the touch screen is located, an angle between a vertical projection of the first metal wire or the second metal wire and a vertical projection of the third metal wire or the fourth metal wire is 30° to 60°.

2. The touch screen according to claim 1, characterized in that: On the plane where the touch screen is located, an angle between a vertical projection of the first metal line or the second metal line and a vertical projection of the third metal line or the fourth metal line is 45°.

3. The touch screen according to claim 1, wherein: An included angle between the first metal wire and the second metal wire is 10° to 80°.

4. The touch screen according to claim 3, characterized in that: An included angle between the first metal wire and the second metal wire is 30° to 60°.

5. The touch screen according to any one of claims 1 to 4, characterized in that: The touch screen further includes a connection layer, and the connection layer connects the display component and the touch component.

6. The touch screen according to any one of claims 1 to 4, characterized in that: The touch component further includes an insulating layer, and the insulating layer connects the first layer and the second layer.

7. The touch screen according to any one of claims 1 to 4, characterized in that: The display assembly further includes a substrate connected to the lower surface of the display layer.

8. The touch screen according to claim 7, wherein: The display assembly further comprises a flexible layer, wherein the flexible layer is connected to the lower surface of the substrate; and / or, The display unit is Mini-LED.

9. A display device, characterized in that: The touch screen comprises the touch screen as described in any one of claims 1 to 8.

Images