TWI556146B - Display touch device - Google Patents

Description

Display touch device

The present invention relates to display touch devices, and more particularly to structures that reduce their reflectivity.

With the advancement of technology, various information devices continue to evolve, such as mobile phones, tablets, ultra-thin notebooks, and satellite navigation. In addition to keyboard or mouse input or manipulation, the use of touch technology to manipulate information devices is a fairly intuitive and popular way to manipulate. Among them, the display touch device has a user-friendly and intuitive input operation interface, so that users of any age can directly select or manipulate the information device with a finger or a stylus, and thus are more and more popular in the market.

The conventional touch display device can be roughly divided into a touch component and a display component. The touch component and the display component can be separately formed and then attached, and the optical component is disposed between the touch component and the display component, and the touch component is located outside the display component.

After the above display touch device is completed, an optical film such as an anti-reflection film, an anti-fouling film, and/or an anti-glare film is often attached to the outermost side. However, the actual reflectance of existing devices is high (>2.5%). Excessive reflectivity will make it difficult for the user to clearly recognize what the display component displays in a strong ambient light environment.

In summary, how to effectively reduce the reflectivity of the display touch device is one of the important topics without significantly changing the process.

The present invention provides a display touch device including a display component, a touch component on the display component, and an anti-glare film on the display component, and the anti-glare film is located between the display component and the touch component. The total glare value of the anti-glare film and display assembly is between 60 and 80. The above display touch device does not need to greatly change the process, and can effectively reduce the reflectivity of the display touch device.

10‧‧‧ display touch device

11‧‧‧Display components

11A, 33‧‧‧ substrate

11B‧‧‧Liquid layer

11C‧‧‧ opposite substrate

13‧‧‧Anti-glare film

15‧‧‧Touch components

15A, 15C‧‧‧ touch electrode structure

15B‧‧‧Insulation

21‧‧‧Optical adhesive

23‧‧‧ Cover

25‧‧‧Optical film

31‧‧‧Shield

1 is a schematic view showing a touch device according to an embodiment of the present invention.

2 is a schematic view showing a touch device according to an embodiment of the present invention.

FIG. 3 is a schematic diagram showing a touch device according to an embodiment of the invention.

Figure 4 is a graph showing the reflectance of a liquid crystal display for incident light of different wavelengths in an embodiment of the present invention.

In order to reduce the reflectivity of the display touch device, the present disclosure discloses a display touch device 10 as shown in FIG. In FIG. 1 , the touch device 10 includes a display component 11 , an anti-glare film 13 , and a touch component 15 . The display touch device 10 can include, but is not limited to, an application in an interactive advertising system, a store discount ordering system, an access control identification system, an information inquiry system, a withdrawal system, or a portable mobile device.

In the present embodiment, the display component 11 can be, for example, a liquid crystal display (LCD) including a substrate 11A, a liquid crystal layer 11B, and an opposite substrate 11C. For example, the substrate 11A may be an array substrate, and the opposite substrate 11C may be color filtered. Sheet substrate. In other embodiments, one of the substrate 11A or the opposite substrate 11C is an array color filter (COA) or an color filter array (AOC) substrate, and the other is a simple substrate without an array and A color filter is placed on it. In another embodiment, the display component 11 can also be an electronic paper, an electronic reader, an electroluminescent display (ELD), an organic electroluminescent display (OELD), a vacuum fluorescent display (VFD), a light emitting diode ( LED), cathode ray tube (CRT), plasma display panel (PDP), digital optical processor (DLP), liquid crystal display (LCoS) on a substrate, organic light emitting diode (OLED), surface conduction electron emission display ( SED), Field Emission Display (FED), Quantum Point Laser TV, Liquid Crystal Laser TV, Ferroelectric Liquid Crystal Display (FLD), Interferometric Adjustment Display (iMOD), Thick Film Dielectric Electroluminescent (TDEL), Quantum Dots Light-emitting diode (QD-LED), flexographic display (TPD), organic light-emitting transistor (OLET), photochromic display, laser fluorescent display (LPD), or the like.

In the embodiment, the touch component 15 includes touch electrode structures 15A and 15C, and is separated from each other by an insulating layer 15B. The touch electrode structure 15A has a first axial electrode pattern, and the touch electrode structure 15C has a second axial electrode pattern, wherein the first axial direction and the second axial direction are alternately arranged, such as perpendicular to each other. In this embodiment, the electrode structure described above includes a carrier substrate. In other embodiments, the electrode structure described above is formed directly on the cover plate without the carrier substrate. The touch electrode structure 15A and the touch electrode structure 15C may be a metal nanowire, a transparent conductive film, or a metal mesh. The above metal nanowire may be a silver nanowire or a carbon nanotube, and the transparent conductive film may be indium tin oxide (ITO), indium zinc oxide (IZO), or fluorine-doped oxide. Tin (FTO), aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), or graphene (graphene) and other electrical conductors. The above insulating layer 15B has a light transmitting property. For example, the insulating layer can be an optical adhesive, so that the touch electrode structure 15A is fully attached to the touch electrode structure 15C. In another embodiment, the insulating layer can be a substrate, and the touch electrode structure 15A and the touch electrode structure 15C are respectively formed on both sides of the substrate. In other embodiments of the present invention, the touch component 15 can be other structures, and is not limited to the above three-layer structure. For example, in some embodiments, the touch component 15 includes only a single-layer touch electrode structure. In this case, the single-layer touch electrode structure has a plurality of electrode patterns, and the first and second axes can be simultaneously detected. Touch signal to the direction. In some embodiments, the single layer touch electrode structure has first and second axial electrode patterns, wherein the first axial direction and the second axial direction are staggered, such as perpendicular to each other. In this embodiment, the first axial electrode patterns of the same row are electrically connected to each other, and the second axial electrode patterns are electrically isolated from the first axial electrode patterns. The insulating layer is located on the first and second axial electrode patterns, and the bridging layer is electrically connected to the second axial electrode pattern of the same column via the contact holes of the insulating layer.

The glare value of the above display unit 11 is usually greater than 100, but after the anti-glare film 13, the total glare value of the two can be reduced to between 60 and 80. The above glare value measurement method measures the glare value of 60 degrees by the micro-glare of BYK-Gardner. In an embodiment of the present invention, the anti-glare film 13 and the display assembly 11 are adhered by an optical adhesive. It is worth mentioning that after the anti-glare film 13 is attached to the display assembly 11, it is not required to undergo thermosetting or hot pressing. Or other processing, so it does not affect or even damage the display assembly 11. In an embodiment of the invention, the anti-glare film 13 is an atomized polyethylene terephthalate film (PET), and the atomization treatment is performed on the polyethylene terephthalate film. Roughening treatment (for example, surface cutting, grinding, fine grinding, electrolytic grinding, etc.) The anti-glare film 13 and the anti-glare film 13 have a rough surface, that is, the surface exhibits irregular high and low undulations, so that light is scattered when the light is irradiated onto the anti-glare film 13, thereby reducing the reflectance of the display touch device 10. In an embodiment of the present invention, the arithmetic mean roughness Ra of the surface of the anti-glare film 13 is less than 0.2 μm, and the haze of the anti-glare film 13 is less than 4%. In an embodiment of the invention, the anti-glare film 13 has a thickness between 100 microns and 300 microns. If the thickness of the anti-glare film 13 is too thin, the reflectance of the display touch device 10 cannot be effectively reduced. If the thickness of the anti-glare film 13 is too thick, the weight and thickness of the display touch device 10 may be increased instead of effectively reducing the reflectance of the display touch device 10.

2 is a schematic diagram of a display touch device according to an embodiment of the present invention. As shown in FIG. 2, the display unit 11 is sequentially provided with an anti-glare film 13, an optical adhesive 21, a touch component 15, a cover 23, and an optical film 25. In an embodiment of the present invention, the anti-glare film 13 is first attached to the display component 11 , and the touch component 15 is formed on the cover 23 and the touch component display component display component is displayed. On the component touch component, the anti-glare film 13 and the touch component 15 are bonded by the optical adhesive 21. In an embodiment of the invention, the anti-glare film 13 may be attached to the display assembly 11 by another optical glue (not shown). Further, an optical film 25 such as an anti-reflective coating (AR), an anti-finger coating (AF), another anti-glare coating (AG), or a combination thereof is formed. On the cover plate 23. In an embodiment of the invention, the thickness of the optical film 25 is between 400 nm and 600 nm, typically 500 nm, which is much smaller than the thickness of the anti-glare film 13. In an embodiment of the invention, the cover plate 23 is a layer or film of glass, PET, or polymethyl methacrylate (PMMA).

FIG. 3 is a schematic diagram of a display touch device according to an embodiment of the present invention. As shown in FIG. 3, the display unit 11 is sequentially provided with an anti-glare film 13, an optical adhesive 21, a shielding layer 31, a substrate 33, a touch component 15, an optical adhesive 21, a cover 23, and an optical film 25. In an embodiment of the present invention, the method for forming the touch control device is such that the anti-glare film 13 is attached to the display unit 11. The bonding method may be an optical glue (not shown). Further, a touch panel 15 is formed on the substrate 33, and a shield layer 31 is formed on the other surface of the substrate 33. Then, the shielding layer 31 and the anti-glare film 13 are bonded by the optical adhesive 21, and the touch component 15 and the cover 23 are attached by another optical adhesive 21. Further, an optical film 25 such as an anti-reflection film, an anti-fouling film, another anti-glare film, or a combination thereof described above is formed on the cap plate 23. In an embodiment of the invention, the thickness of the optical film 25 is between 400 nm and 600 nm, typically 500 nm, which is much smaller than the thickness of the anti-glare film 13. In an embodiment of the invention, the substrate 33 can be a layer or film of glass, PET, or polymethyl methacrylate (PMMA). In an embodiment of the invention, the shielding layer 31 is made of a light-transmitting conductive material and has an antistatic function. In some embodiments, the shielding layer 31 comprises a high temperature ITO layer and a SiO ₂ layer. In an embodiment of the invention, the cover plate 23 is a layer or film of glass, PET, or polymethyl methacrylate (PMMA).

Taking the structure of FIG. 2 as an example, the reflectivity of the finally formed display touch device can be less than 1.5%. If the anti-glare film 13 of FIG. 2 is omitted (ie, the optical component 21 directly bonds the touch component 15 and the display component 11), the reflectivity of the display touch device will be greater than 2.5%.

The above and other objects, features, and advantages of the present invention will become more apparent and understood.

Example

Example 1

Take five groups of LCDs and measure their glare value to 111. After the anti-glare film (atomized PET) was attached to five groups of LCDs, the glare values were measured, and the glare values were 79.8, 74.6, 64.6, 79.9, and 75.3, respectively. An LCD having an anti-glare film attached thereto has a lower glare value than an LCD without an anti-glare film.

Example 2

Take three sets of LCDs and measure their optical reflection properties (measurement standard is MFS-630, light incident angle is 8°) as shown in Table 1. The light reflection diagram of the above LCD is as shown in Fig. 4.

Take the same three sets of LCD, after the surface is attached with anti-glare film (atomized PET), then measure its optical reflection properties (measurement standard is MES-630, light incident angle is 8°) as the first The table shows. The light reflection diagram of the above-mentioned LCD with an anti-glare film is shown in Fig. 4.

As can be seen from Tables 1 and 4, the anti-glare film of the present application can reduce the reflectance of the LCD.

Example 3

Taking the same three sets of LCD as in Embodiment 1, the touch component formed on the cover is bonded to the LCD by optical glue, and an anti-reflection film is coated on the surface of the cover to form a display touch device, and the optical is measured. Reflective properties (measurement standard is MFS-630, light incident angle is 8°) as shown in Table 2.

Taking the same three sets of LCDs, after the surface is first attached with an anti-glare film (atomized PET), the touch component formed on the cover is bonded to the anti-glare film on the LCD with an optical glue, and the cover is covered. The surface of the board is coated with an anti-reflection film to form a display touch device (the structure of the display touch device is as shown in FIG. 2), and the optical reflection property is measured (the measurement standard is MFS-630, and the light incident angle is 8°). ) as shown in Table 2.

As can be seen from the second table, the anti-glare film of the present application can reduce the reflectivity of the display touch device.

While the invention has been described above in terms of several embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can be modified and modified without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧ display touch device

11‧‧‧Display components

11A‧‧‧Substrate

11B‧‧‧Liquid layer

11C‧‧‧ opposite substrate

13‧‧‧Anti-glare film

15‧‧‧Touch components

15A, 15C‧‧‧ touch electrode structure

15B‧‧‧Insulation

Claims (14)

A display touch device includes: a display component; a touch component disposed on the display component; and an anti-glare film disposed on the display component and located between the display component and the touch component, wherein the The total glare value of the anti-glare film and the display assembly is between 60 and 80. The display touch device of claim 1, wherein the anti-glare film is atomized polyethylene terephthalate. The display touch device of claim 1, wherein the anti-glare film has a thickness of between 100 micrometers and 300 micrometers. The display touch device of claim 1, wherein the anti-glare film has a rough surface. The display touch device of claim 1, further comprising an optical adhesive to the anti-glare film and the display assembly. The display touch device of claim 1, further comprising: a cover plate on the touch component; and an optical film on the cover plate. The display touch device of claim 6, further comprising an optical adhesive to the anti-glare film and the touch component. The display touch device of claim 6, wherein the optical film comprises an anti-reflection film, an anti-fouling film, another anti-glare film, or the above The combination. The display touch device of claim 6, wherein the optical film has a thickness of between 400 nm and 600 nm. The display touch device of claim 1, further comprising: a shielding layer disposed on the anti-glare film between the anti-glare film and the touch component; a substrate disposed on the shielding layer And located between the shielding layer and the touch component; a cover plate on the touch component; and an optical film on the cover plate. The display touch device of claim 10, further comprising a first optical adhesive attached to the anti-glare film and the shielding layer. The display touch device of claim 10, further comprising a second optical adhesive that is attached to the touch component and the cover. The display touch device of claim 10, wherein the optical film comprises an anti-reflection film, an anti-fouling film, another anti-glare film, or a combination thereof. The display touch device of claim 10, wherein the optical film has a thickness of between 400 nm and 600 nm.