CN209690889U - A kind of touch module and touching display screen - Google Patents

Abstract

The utility model provides a kind of touch module; component is touched including protective film, Optical transparent adhesive and at least two; the touch component includes glass substrate and the electrode layer on glass substrate; the Optical transparent adhesive is coated on the protective film, and at least two touches component is attached on the protective film by the Optical transparent adhesive respectively.The utility model is spliced into the substrate of electrode layer by glass substrate separately, due to having gap between glass substrate, when touch module is by extraneous folding s tress, stress gradually can be discharged by the gap in the process of bending, to reduce the risk that glass substrate is broken in bending.The touch module can curved screens to a certain extent, achieve the effect that flexible touch module.

Description

A touch module and a touch display

technical field

The utility model relates to a bendable touch module and a touch display screen.

Background technique

As a convenient and fast way of human-computer interaction, touch modules are used more and more widely, such as mobile phones, TVs, computers, smart cars, etc. With the rapid development of OLED technology, flexible OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) technology has gradually entered people's field of vision, which also raises the demand for flexible touch technology. A major advantage of the flexible touch module is that it can be bent. Compared with the flat touch module, the curved design of the curved touch module towards the user can provide a wide panoramic image effect. The distance between the eyes is equal, no matter whether the objects in the screen appear in the center or the edge, there will be no deformation, and the distortion of uneven viewing angle distance will be reduced when viewing at close range, so that the audience can fully immerse themselves in the wonderful and realistic picture Among them, it brings a more realistic and comfortable look and feel to the audience. Curved screens are favored by consumers because of their large display area, small space occupation, and easy portability and application.

The current method of manufacturing curved touch modules is to attach a touch film on hot-curved glass, which is difficult to manufacture, has a low yield and poor stability. Or directly use the pulling force of the film to realize the bending of the ultra-thin glass substrate. When the ultra-thin glass substrate is under tension under static conditions, it is easy to rebound, it is difficult to maintain the bent state, and it is easily broken when a large deformation occurs, resulting in low manufacturing yield. . In addition, as the usage time increases, the curvature of the touch module will also change.

Utility model content

In order to solve the problem that the existing glass substrate touch module is easily broken when subjected to bending stress, the utility model provides a touch module.

The first aspect of the utility model provides a touch module, including a protective film, optically transparent glue and at least two touch components, each touch component includes a glass substrate and an electrode layer on the glass substrate, the optically transparent glue Coated on the protective film, the at least two touch components are respectively attached to the protective film through the optical transparent glue, and the at least two touch components work together.

Using two glass substrates to assemble the base of the electrode layer, when the touch module is bent by external bending stress, the stress can be released through the gap between the glass substrates, reducing the risk of the touch module breaking. At the same time, the existence of gaps enables the entire substrate to deform to a predetermined degree of curvature under relatively small stress, achieving a flexible effect, reducing process difficulty and increasing yield. In addition, after the stress is released through the gap, the bent touch module is not easy to rebound and has good stability. The protective film is used to prevent the optically transparent adhesive layer from contacting dust and water vapor in the air, so as to prevent the viscosity of the adhesive layer from decreasing. The protective film is torn off during use, and the optically transparent adhesive layer is attached to the cover plate or the display module.

Preferably, there is a gap between the glass substrates, and the size of the gap is within 0.8mm. The space between the glass substrates does not contain conductive lines, and the small space is not only conducive to the small bending of the screen, but also does not affect the touch recognition accuracy of the entire screen. The gap is too large, on the one hand, it is visible to the naked eye, and on the other hand, the touch action cannot be detected in the gap.

Preferably, the at least two glass substrates have the same shape and equal area. When the glass substrate of the same size is subjected to bending stress, the bending degree is uniform, the overall symmetry of the screen is good, and the human eyes see the picture more realistically. In addition, it is easy to make the same conductive circuit on the glass substrate, and the touch sensitivity of the entire screen of the touch module is consistent.

Preferably, the upper surface of the glass substrate is narrower than the lower surface, so that the spaced and opposite surfaces between the two glass substrates form chamfered edges. The opposite surfaces are chamfered structure, that is, the opposite surfaces shrink inward, and when they are bent and squeezed together, the force is reduced and it is not easy to break. This chamfering structure can achieve the required curvature under the condition of smaller intervals.

Preferably, the inclined angle of the inverted edge along the lower surface of the glass substrate is 20-70°. If the angle is too small, the slope of the bevel is too gentle, causing the gap to be too large. If the angle is too large, the slope of the edge will be too large, and the extrusion force will be large when it is bent and closed, and the glass will be fragile.

Preferably, the thickness of the glass substrate is less than or equal to 0.1 mm. The thinner the glass substrate, the easier it is to bend, but it is also more fragile. Therefore, it is necessary to select a substrate with an appropriate thickness according to the required degree of curvature.

Preferably, the touch module further includes electrode leads and an FPC, the electrode leads are connected to the electrode layer and the FPC, and the electrode layers on two adjacent glass substrates are connected to the same FPC or to two FPCs respectively. The electrode circuits on each glass substrate can be bound to the same FPC or to different FPCs respectively. The former is more stable when touching the entire screen, and the latter has better bending resistance.

Preferably, each glass substrate is rectangular, and the glass substrates are arranged in a matrix. The glass substrate is an array of multiple glass substrates arranged vertically and horizontally. The touch module can be bent horizontally and vertically. Multiple sub-substrates can be bent to form a preset pattern, which is especially suitable for the construction of large-scale curved screens.

The second aspect of the utility model provides a touch display screen, including a transparent cover plate, a display module, optical transparent glue and at least two touch components, each touch component includes a glass substrate and an electrode layer on the glass substrate, so The at least two touch components are attached to the optically transparent adhesive respectively, the touch module is located between the transparent cover and the display module, and the transparent cover is attached to the optically transparent adhesive surface. The touch module is assembled with the flexible cover and the display module to form a bendable touch display.

The touch module and the touch display screen disclosed in the utility model are spliced into the base of the electrode layer by splicing spaced glass substrates. Since there are gaps between the glass substrates, when the touch module is subjected to external bending stress, it can During the bending process, the stress is gradually released through the gap, thereby reducing the risk of glass substrate cracking during bending. At the same time, the existence of the gap allows the entire substrate to deform to a preset degree of curvature under a small stress, realizing The effect of flexibility reduces the difficulty of the process and increases the yield. Since the stress has been completely released through the gap between the glass substrates, the touch module after being bent by force can maintain the preset bending degree, and it is not easy to rebound into a flat shape, and the bending stability of the screen is strong.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the accompanying drawings that are used in the description of the embodiments.

Fig. 1 is a schematic top view of a glass substrate of the present invention;

Fig. 2 is a layered schematic diagram of a touch module;

FIG. 3 is a stacked schematic diagram of another touch module;

Fig. 4-A is a schematic diagram of electrode binding of the touch module in Fig. 2;

Fig. 4-B is another schematic diagram of electrode binding of the touch module in Fig. 2;

Fig. 5 is a partially enlarged schematic diagram of the glass substrate of the ellipse part in Fig. 1;

Fig. 6 is a partially enlarged schematic view of the chamfering of the opposite side of the glass substrate of the ellipse in Fig. 1;

Figure 7-A is a schematic diagram of bending two glass substrates;

Figure 7-B is a schematic diagram of bending multiple glass substrates along the same direction;

FIG. 7-C is a schematic diagram of bending multiple glass substrates in different directions.

Among them, 1. Glass substrate; 11. Bending direction of glass substrate; 21. Sensing electrode layer; 22. Driving electrode layer; 2. Electrode layer; 3. Optically transparent adhesive layer; 41, 42, 43, FPC; 5. Protective film ;6, motor leads; d1, the distance between the glass substrates; d2, the thickness of the glass substrate; d3, the width of the upper surface of the glass substrate; d4, the width of the lower surface of the glass substrate; .

Detailed ways

In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below limit.

It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. As used herein, the terms "left", "right", "upper", "lower" and similar expressions are for the purpose of description only and do not represent the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used in the description of the utility model herein is only for the purpose of describing specific embodiments, and is not intended to limit the utility model.

This example will specifically explain the touch module and the touch display screen provided by the utility model.

An embodiment of the first aspect of the present invention provides a touch module. As shown in Fig. 2 and Fig. 3, comprise protective film 5, optical transparent glue 3 and two touch components, each touch component comprises glass substrate 1 and is positioned at the electrode layer 2 on glass substrate, and optical transparent glue 3 is coated on protection On the film 5, the two touch components are respectively attached to the protective film 5 through the optical transparent glue 3, and the two touch components work together. The protective film is torn off during use, and the optical transparent adhesive is attached to the cover plate or the display module.

The protective film 5 is made of PET (polyethylene terephthalate), PC (polycarbonate) or PI (polyimide) and the like. Optical transparent glue 3 is OCA optical glue.

The electrode layer 2 includes a sensing electrode layer 21 and a driving electrode layer 22, which are arranged alternately in space. The sensing electrode layer 21 and the driving electrode layer 22 can be respectively disposed on the upper and lower sides of the glass substrate ( FIG. 2 ). Alternatively, the two are respectively arranged on the top of the two layers of glass substrates 1 to form a touch module ( FIG. 3 ). Furthermore, the touch module further includes electrode leads 6 and FPC41, and the electrode layers 2 on two adjacent glass substrates 1 are connected to the FPC41 through the electrode leads 6 (FIG. 4-A). Alternatively, the electrode layers 2 on two adjacent glass substrates 1 are respectively connected to FPC42 and FPC43 ( FIG. 4 -B ) through electrode leads 6 .

As shown in FIGS. 1-7 , the glass substrate 1 is rectangular, but of course it can also be in other suitable shapes. The glass substrates 1 may extend at intervals along the long or short sides of the rectangle, as shown in FIGS. 7-A and 7-B . Further, the glass substrates 1 are arranged in a matrix, as shown in FIG. 7-C . This touch module can be bent horizontally and vertically, and multiple glass substrates can be bent to form preset graphics, which is especially suitable for the construction of large-size curved screens.

As shown in FIG. 5 , the distance d1 between the glass substrates 11 is within 0.8 mm, which is 0.5 mm in this example. The small spacing is not only conducive to the slight bending of the screen, but also does not affect the accuracy of touch recognition of the entire screen. The effect after bending is shown in Figures 7-A, 7-B and 7-C. If the gap is too large, on the one hand, it is visible to the naked eye, and on the other hand, the touch action cannot be detected at the gap. The thickness d2 of the glass substrate 1 is less than or equal to 0.1 mm, which is 0.08 mm in this example.

As shown in FIG. 6 , the width d3 of the upper surface of the glass substrate 1 is smaller than the width d4 of the lower surface, so that the spaced and opposite surfaces between the two glass substrates 1 form chamfered edges. The sides of the substrates shrink from bottom to top to form hypotenuses. In this way, when the two substrates are bent from the glass substrate to the outside along the direction shown in 11, the pressing force on the opposite surface is reduced, and the glass substrate is not easy to break. The desired curvature is achieved at smaller intervals. The angle θ at which the inverted edge is inclined along the lower surface of the glass substrate 1 is 20-70°, and it is 45° in this example.

In this example, the glass substrates 1 have the same shape and the same area. Because when the glass substrate of the same size is subjected to bending stress, the bending degree is uniform, the overall symmetry of the screen is good, and it is easier to make the same conductive circuit on the glass substrate, and the touch sensitivity of the entire screen of the touch module is consistent. The size of the glass substrate can also be different according to actual needs, as long as the combined structure of the touch module is symmetrical and does not affect the viewing picture, such as a curved TV. The size of the glass substrate can be adjusted appropriately. Where the curvature is large, the size of the glass substrate is small, there are many gaps, and it is easy to bend.

An embodiment of the second aspect of the present invention provides a touch display screen, including a transparent cover plate, a display module, an optical transparent glue 3 and at least two touch components, the touch component includes a glass substrate 1 and a glass substrate located on the glass substrate 1 Electrode layers (21 and 22), at least two touch components are attached to the optical transparent adhesive 3 respectively, and at least two touch components work together, the touch module is located between the transparent cover and the display module, and the transparent cover is pasted Fit on the surface of the optically transparent glue 3. The touch module is assembled with the flexible cover and the display module to form a bendable touch display.

The touch module and the touch display screen disclosed in the utility model are spliced into the base of the electrode layer by splicing spaced glass substrates. Since there are gaps between the glass substrates, when the touch module is subjected to external bending stress, it can During the bending process, the stress is gradually released through the gap, thereby reducing the risk of glass substrate cracking during bending. At the same time, the existence of the gap allows the entire substrate to deform to a preset degree of curvature under a small stress, realizing The effect of flexibility reduces the difficulty of the process and increases the yield. Since the stress has been completely released through the gap between the glass substrates, the touch module after being bent by force can maintain the preset bending degree, and it is not easy to rebound into a flat shape, and the bending stability of the screen is strong.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. a kind of touch module, which is characterized in that touch component, each touching including protective film, Optical transparent adhesive and at least two Touching component includes glass substrate and the electrode layer on glass substrate, has interval, the optics between the glass substrate Transparent adhesive tape is coated on the protective film, and at least two touches component is attached at by the Optical transparent adhesive described respectively On protective film.

2. touch module according to claim 1, which is characterized in that the size of space is 0.8mm between the glass substrate Within.

3. touch module according to claim 1, which is characterized in that the shape of at least two glass substrates is identical and face Product is equal.

4. touch module according to claim 1, which is characterized in that the upper surface of the glass substrate is narrower than lower surface, Make to be spaced opposite face formation bevelling between two glass substrates.

5. touch module according to claim 4, which is characterized in that the bevelling is along the inclined angle in glass substrate lower surface Degree is 20-70 °.

6. touch module according to claim 1, which is characterized in that the thickness of glass substrate is less than or equal to 0.1mm.

7. touch module according to claim 1, which is characterized in that further include contact conductor and FPC, the contact conductor It is connected to the electrode layer and FPC, the electrode layer on adjacent two glass substrate is connected on the same FPC or is connected respectively to two On FPC.

8. touch module according to claim 1, which is characterized in that each glass substrate is rectangle, each glass base It is arranged in a matrix between plate.

9. a kind of touching display screen, including transparent cover plate and display module, which is characterized in that the touching display screen further includes light It learns transparent adhesive tape and at least two and touches components, each touch component includes glass substrate and the electrode layer on glass substrate, Described at least two touch component respectively with the optical clear glue laminating, and the touch module is located at the transparent cover plate and institute It states between display module, the transparent cover plate is fitted in the Optical transparent adhesive surface.