TW201541313A - Touch panel and touch device comprising the same - Google Patents

Abstract

The present disclosure provides a touch panel. The touch panel comprises a substrate, a mask layer and a first anti-reflection (AR) layer. The mask layer is disposed on a surface of the substrate. Moreover, the mask layer comprises a camera window, which is uncovered and defined by a portion of the mask layer on the surface of the substrate. The first AR layer is disposed in the camera window.

Description

Touch panel and touch device having the same

The present invention relates to touch technologies, and more particularly to a touch panel and a touch device having the same.

Touch panels or touch screens are increasingly used in electronic devices, particularly portable or handheld electronic devices such as personal digital assistants (PDAs) or mobile phones. In the current touch panel, some panels are coated with an anti-reflection film on the surface of the glass substrate (touch operation surface) to increase the anti-reflection capability and improve the visual clarity, thereby reducing the reflection of the surface of the glass substrate and increasing the light. The penetration rate through the glass substrate. In addition, in the case of a touch panel provided with an image pickup hole, the anti-reflection film also contributes to image sharpness at the time of image capture. However, with the evolution of electronic devices and touch panels, the demand for high image clarity has also increased. How to configure an anti-reflection film to improve image clarity is a topic in the touch panel industry.

In view of the above, an object of the present invention is to effectively arrange an anti-reflection film to improve image sharpness. Embodiments of the present invention provide a touch control panel including a substrate, a shielding layer, and a first anti-reflection layer. The shielding layer is located on the surface of the substrate, and the shielding layer comprises a camera window, the camera window is defined by a partial shielding layer hollowed out on the surface of the substrate, and the first anti-reflection layer is located in the camera. Inside the window.

In the embodiment of the present invention, the shielding layer divides the substrate into a touch area and a surrounding area surrounding the touch area, and the shielding layer and the camera window are located in the peripheral area.

In an embodiment of the invention, the first anti-reflective layer covers the surface of the partial shielding layer.

In an embodiment of the invention, the first anti-reflective layer is defined within the imaging window.

In an embodiment of the invention, a second anti-reflective layer is further disposed between the substrate and the shielding layer.

In an embodiment of the invention, the shielding layer and the first anti-reflective layer are on the second anti-reflective layer.

In an embodiment of the invention, the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the second anti-reflective layer is located on the second surface of the substrate, and further comprises a third surface. The anti-reflective layer is on the first surface of the substrate.

In an embodiment of the invention, a functional layer is further disposed on the third anti-reflective layer, wherein the functional layer comprises one or a combination of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer.

In an embodiment of the invention, the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the shielding layer and the imaging window are located on the second surface of the substrate, wherein the substrate further comprises a The second anti-reflective layer is on the first surface of the substrate.

In an embodiment of the invention, a functional layer is further disposed on the second anti-reflective layer. The functional layer comprises one or a combination of an explosion-proof layer, an anti-glare layer, a hardened layer, and an anti-fingerprint layer.

The embodiment of the invention further provides a touch device comprising a substrate, a display module, a shielding layer and a first anti-reflection layer. The shielding layer is located on the surface of the substrate, and the shielding layer comprises a camera window, and a part of the shielding layer is hollowed out and defined on the surface of the substrate. The display module has an image capturing component corresponding to the camera window, and the first anti-reflection layer is located in the camera window.

In the embodiment of the present invention, the shielding layer divides the substrate into a touch area and a surrounding area surrounding the touch area, and the shielding layer and the camera window are located in the peripheral area.

In an embodiment of the invention, the first anti-reflective layer covers the surface of the partial shielding layer.

In an embodiment of the invention, a second anti-reflective layer is further disposed between the substrate and the shielding layer.

In an embodiment of the invention, the shielding layer and the first anti-reflective layer are on the second anti-reflective layer.

In an embodiment of the invention, the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the second anti-reflective layer is located on the second surface of the substrate. A third anti-reflective layer is further disposed on the first surface of the substrate.

In an embodiment of the invention, a functional layer is further disposed on the third anti-reflective layer. The functional layer comprises one or a combination of an explosion-proof layer, an anti-glare layer, a hardened layer, and an anti-fingerprint layer.

In an embodiment of the invention, the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the shielding layer and the imaging window are located on the second surface of the substrate. A second anti-reflective layer is further disposed on the first surface of the substrate.

In an embodiment of the invention, a functional layer is further disposed on the second anti-reflection layer. The functional layer comprises one or a combination of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer.

In an embodiment of the invention, an interposer substrate is further disposed between the shielding layer and the display module.

In an embodiment of the invention, the first anti-reflective layer disposed in the image capturing window helps to increase the light transmittance of the light passing through the image capturing window, for example, increasing the light transmittance of about 90±2% to about 94. ±2%. In addition, the first anti-reflection layer also helps to improve the sharpness of the image capturing component when capturing images. Moreover, the first anti-reflection layer can be limited to the range of the image pickup window, so that the first anti-reflection layer occupies a small area, which contributes to lowering the production cost and improving the production yield.

The technical content and technical features of the present invention have been disclosed as above, but it should be understood by those skilled in the art that the present invention should be understood and disclosed without departing from the spirit and scope of the disclosure. Can be used for various substitutions and modifications. For example, many of the elements disclosed above may be implemented in different structures or in other structures having the same function, or a combination thereof.

Further, the scope of the present invention is not limited to the apparatus, elements or structures of the specific embodiments disclosed above. Those having ordinary skill in the art to which the present invention pertains will understand that, based on the teachings and disclosures of the present invention, the device, the component or the structure, whether presently present or later, is substantially the same as the present embodiment disclosed in substantially the same manner. The functions, while achieving substantially the same results, can also be used in this disclosure. Therefore, the following patent claims are intended to cover such devices, elements or structures.

10‧‧‧Touch panel

11‧‧‧Substrate

12‧‧‧Shielding layer

14‧‧‧ Camera window

15‧‧‧First anti-reflective layer

18‧‧‧ display module

20‧‧‧Touch panel

25‧‧‧Second anti-reflective layer

30‧‧‧Touch panel

35‧‧‧Second anti-reflective layer

36‧‧‧ functional layer

40‧‧‧ touch panel

45‧‧‧ Third anti-reflective layer

50‧‧‧ touch panel

51‧‧‧Intermediate substrate

60‧‧‧ touch panel

70‧‧‧ touch panel

80‧‧‧ touch panel

100‧‧‧ touch device

101‧‧‧ first surface

102‧‧‧ second surface

111‧‧‧ touch area

112‧‧‧The surrounding area

185‧‧‧Image capture component

200‧‧‧ touch device

300‧‧‧ touch device

400‧‧‧ touch device

500‧‧‧ touch device

600‧‧‧ touch device

700‧‧‧ touch device

800‧‧‧ touch device

The foregoing summary of the present invention and the following detailed description are read in conjunction with the drawings. It is easier to understand when reading. For the purposes of illustrating the invention, various embodiments are shown in the drawings. However, the invention is not limited to the precise arrangement and equipment described, and this should be understood.

1A is a top plan view of a touch panel according to an embodiment of the invention; FIG. 1B is a view showing a touch device including the touch panel of FIG. 1A along the AA direction of FIG. 1A according to an embodiment of the invention; 1C is a cross-sectional view of the touch device including the touch panel of FIG. 1A along the AA direction of FIG. 1A according to another embodiment of the present invention; FIG. 2 is a view showing another embodiment of the present invention. FIG. 3 is a cross-sectional view of a touch device according to another embodiment of the present invention; FIG. 4 is a cross-sectional view of the touch device according to still another embodiment of the present invention; 5 is a cross-sectional view of a touch device according to an embodiment of the present invention; FIG. 6 is a cross-sectional view of a touch device according to another embodiment of the present invention; and FIG. 7 is a view of the touch device according to the present invention; Another embodiment is a schematic cross-sectional view of a touch device; and FIG. 8 is a cross-sectional view of the touch device according to still another embodiment of the present invention.

FIG. 1A is a top plan view of a touch panel 10 according to an embodiment of the invention. FIG. 1B is a cross-sectional view of the touch device 100 including the touch panel 10 of FIG. 1A along the AA direction of FIG. 1A according to an embodiment of the invention. Referring to FIG. 1A and FIG. 1B , the touch device 100 includes a touch panel 10 and a display module 18 . The touch panel 10 includes a substrate 11 , a shielding layer 12 , an imaging window 14 , and a first anti-reflection layer 15 . The shielding layer 12 is disposed on the substrate 11 The surface of the substrate 11 is divided into a touch area 111 and a peripheral area 112 surrounding the touch area 111. The shielding layer 12 also defines the surface peripheral area 112 of the partial substrate 11 as an image capturing window 14 as a window for image capturing. A touch sensing electrode layer (not shown) is disposed in the touch area 111 for sensing a touch position or a track on the touch panel 10 . In addition, a signal wiring (not shown in the figure) is also disposed in the peripheral region 112, and is electrically connected to the touch sensing electrode layer.

The display module 18 has an image capturing component 185 corresponding to the imaging window 14, such as a charge-coupled device (CCD), a complementary CMOS active pixel sensor, or Infrared sensor.

In an embodiment of the invention, the substrate 11 can be a hard transparent substrate or a flexible transparent substrate, and the material thereof can be selected from the group consisting of glass, acrylic (PMMA), polyvinyl chloride (PVC), and polypropylene. Transparent materials such as (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), and polystyrene (PS).

The substrate 11 has a first surface 101 and a second surface 102, and the first surface 101 and the second surface 102 are located on opposite sides of the substrate 11. The first surface 101 is used as a user touch interface of the touch device 100. For example, a touch sensing electrode layer is disposed in the touch area 111 on the second surface 102 to sense that the user touches the first surface. The associated touch location or trajectory of surface 101. The touch sensing electrode layer includes a first axial electrode and a second axial electrode. The material of the electrode may include various transparent conductive materials, for example, indium tin oxide (ITO), indium zinc oxide (IZO), cadmium tin oxide (CTO), aluminum zinc oxide (aluminum) Zinc oxide; AZO), indium tin zinc oxide (ITZO), zinc oxide, cadmium oxide, hafnium oxide (HfO), indium gallium zinc Oxide; InGaZnO), indium gallium zinc magnesium Oxide; InGaZnMgO), indium gallium magnesium oxide (InGaMgO) or indium gallium aluminum oxide (InGaAlO). In an embodiment, the material of the electrode may comprise an opaque conductive material, such as a metal mesh composed of a metallic material.

The masking layer 12 is located within the peripheral region 112 of the second surface 102 of the substrate 11. The shielding layer 12 is typically made of an opaque material to shield components outside the touch area 111, such as signal wiring. In an embodiment of the present invention, the material of the shielding layer 12 may be selected from a black photoresist material, a black resin, a black ink, a low reflectivity film, or the like having other colors.

The camera window 14 is defined by a portion of the obscuring layer 12 within the peripheral region 112 of the second surface 102 of the substrate 11. In detail, a portion of the peripheral region 112 that is not covered by the masking layer 12 is defined as the image pickup window 14. The position of the camera window 14 corresponds to the image capturing component 185, and the image capturing component 185 captures the image through the imaging window 14.

The first anti-reflection layer 15 is located in the imaging window 14. In an embodiment of the invention, an anti-reflective film is attached to the imaging window 14 to form the first anti-reflective layer 15. In another embodiment of the invention, the first anti-reflective layer 15 is formed in the imaging window 14 by spraying or sputtering. The arrangement of the first anti-reflective layer 15 helps to increase the light transmittance of the light through the imaging window 14 to meet the light transmittance requirements of the image capturing element 185. In an embodiment of the invention, the material of the first anti-reflective layer 15 may be selected from chromium (Cr) or fluoride such as Teflon and calcium fluoride (CaF ₂ ).

In the present embodiment, the shielding layer 12 is in contact with the first anti-reflective layer 15 and is located on the second surface 102 of the substrate 10. Moreover, in an embodiment of the invention, the first anti-reflective layer 15 is defined between the imaging window 14 and the partial shielding layer. With this configuration, since the area of the first anti-reflection layer 15 is small, it is only required to be limited to the range of the image capturing window 14, which contributes to lowering the production cost and improving the living. Yield yield.

In another embodiment of the present invention, as shown in FIG. 1C, the first anti-reflective layer 15 covers the surface of the partial shielding layer 12. With this configuration, the first anti-reflection layer 15 can cover the imaging window 14 more completely, which helps to improve the overall light transmittance of the imaging window 14.

In an embodiment of the present invention, the display module 18 may include a liquid crystal display (LCD) panel, an electroluminescent (EL) display panel such as an organic light emitting diode (OLED) display panel, and electrowetting. (electrowetting) display panel, electrophoretic display panel or other various types of self-illuminating display panels, non-self-illuminating display panels, hard display panels or flexible display panels. In addition, the display module 18 and the touch panel 10 can be bonded by using an adhesive layer (not shown). For example, the adhesive layer uses a frame glue or a mouth-shaped glue, which is disposed only in the peripheral region 112 between the display module 18 and the touch panel 10. However, in other variant embodiments, the adhesive layer can also be a complete adhesive layer. The adhesive layer may comprise Optical Clear Resin (OCR) or Optical Clear Adhesive (OCA). Moreover, the optical glue can be a water-based glue or an optically transparent special double-sided tape.

2 is a cross-sectional view of a touch device 200 in accordance with yet another embodiment of the present invention. Referring to FIG. 2, the components and structures of the touch device 200 are similar to those of the touch device 100 shown in FIG. 1B. However, the touch panel 20 of the touch device 200 further includes a second anti-reflection layer 25 on the substrate 11 and shielding. Between layers 12. In the present embodiment, the shielding layer 12 is in contact with the first anti-reflective layer 15 and is located on the second anti-reflective layer 25. The arrangement of the second anti-reflection layer 25 helps to increase the light transmittance of the substrate 11 and reduce the light reflection of the substrate 11. In an embodiment of the invention, the material of the second anti-reflective layer 25 may be selected from chromium (Cr) or fluoride such as Teflon and calcium fluoride (CaF ₂ ).

FIG. 3 is a cross-sectional view of a touch device 300 in accordance with another embodiment of the present invention. Referring to FIG. 3 , the components and structures of the touch device 300 are similar to those of the touch device 100 shown in FIG. 1B , but the touch panel 30 of the touch device 300 further includes a second anti-reflective layer 35 on the substrate 11 . On a surface 101. The arrangement of the second anti-reflection layer 35 helps to increase the light transmittance of the substrate 11 and reduce the light reflection of the substrate 11. In an embodiment of the invention, the material of the second anti-reflective layer 35 may be selected from chromium (Cr) or fluoride such as Teflon and calcium fluoride (CaF ₂ ).

Moreover, the touch panel 30 of the touch device 300 further includes a functional layer 36 on the second anti-reflective layer 35. The functional layer 36 may include, but is not limited to, an anti-split layer (AS), an anti-glare layer (AG), a hard coat layer (HC), and an anti-fingerprint layer (anti-fingerprint). One of or one of the combinations; AF).

When the functional layer 36 is used for explosion-proof purposes, the material of the functional layer 36 may be selected from the group consisting of polymethyl methacrylate (PMMA), cellulose triacetate (TAC), polyester (PET), polypropylene (PP), and poly. A hydrocarbon group (COP) or a combination of the above materials.

When the functional layer 36 is used for anti-glare purposes, the material of the functional layer 36 may be selected from cerium oxide. The anti-glare film has a haze of between about 1% and 2% to scatter light and prevent the Newton's ring from occurring.

When the functional layer 36 is used for hardening, the material of the functional layer 36 may be selected from a photosensitive resin or cerium oxide (SiO ₂ ) such that the surface hardness is, for example, higher than 2H, the transmittance is, for example, higher than 91%, warpage, for example. Not higher than 10mm.

When the functional layer 36 is used for anti-fingerprinting, the material of the functional layer 36 may be selected from a polymer film, a metal oxide film or a nano-sol film.

4 is a cross-sectional view of a touch device 400 in accordance with still another embodiment of the present invention. Referring to FIG. 4 , the components and structures of the touch device 400 are similar to those of the touch device 200 shown in FIG. 2 , but the touch panel 40 of the touch device 400 further includes a third anti-reflective layer 45 on the substrate 11 . On a surface 101. Also, the second anti-reflection layer 25 is located on the second surface 102 of the substrate 11. The arrangement of the third anti-reflection layer 45 helps to increase the light transmittance of the substrate 11 and reduce the light reflection of the substrate 11. In an embodiment of the invention, the material of the third anti-reflective layer 45 may be selected from chromium (Cr) or fluoride such as Teflon and calcium fluoride (CaF ₂ ).

Moreover, the touch panel 40 of the touch device 400 further includes a functional layer 36 on the third anti-reflective layer 45. The functional layer 36 may include, but is not limited to, an anti-split layer (AS), an anti-glare layer (AG), a hard coat layer (HC), and an anti-fingerprint layer (anti-fingerprint). One of or one of the combinations; AF).

FIG. 5 is a cross-sectional view of a touch device 500 in accordance with an embodiment of the present invention. Referring to FIG. 5 , the components and structures of the touch device 500 are similar to those of the touch device 100 shown in FIG. 1B . The touch panel 50 of the touch device 500 further includes an interposer substrate 51 located on the shielding layer 12 and the display module. Between 18. The material of the interposer substrate 51 is similar to the material of the substrate 11. In addition, the interposer substrate 51 and the substrate 11 can be bonded by an adhesive layer (not shown). Moreover, the interposer substrate 51 and the display module 18 can be bonded by another adhesive layer (not shown). The structure and material of the adhesive layer are as described in the previous embodiments, and are not further described herein.

The arrangement of the interposer substrate 51 helps to diversify the arrangement of the electrodes of the touch sensing electrode layer, so that the touch device 500 can be used differently. For example, the first axial electrode of the touch sensing electrode layer may be disposed on the substrate 11 , and the second axial electrode is disposed on the interposer substrate 51 . For example, the first axial electrode of the touch sensing electrode layer can be disposed on the surface of the interposer substrate 51 near the substrate 11 , and the second axial electrode is disposed on the surface of the interposer substrate 51 adjacent to the display module 18 .

FIG. 6 is a cross-sectional view showing a touch device 600 according to still another embodiment of the present invention. intention. Referring to FIG. 6 , the components and structures of the touch device 600 are similar to those of the touch device 200 shown in FIG. 2 . The touch panel 60 of the touch device 600 further includes an interposer substrate 51 located on the shielding layer 12 and the display module. Between 18. The function of the interposer substrate 51 is as described in the foregoing embodiments, and will not be further described herein.

FIG. 7 is a cross-sectional view of a touch device 700 in accordance with another embodiment of the present invention. Referring to FIG. 7 , the components and structures of the touch device 700 are similar to those of the touch device 300 shown in FIG. 3 . The touch panel 70 of the touch device 700 further includes an interposer substrate 51 located on the shielding layer 12 and the display module. Between 18.

FIG. 8 is a cross-sectional view of a touch device 800 in accordance with still another embodiment of the present invention. Referring to FIG. 8 , the components and structures of the touch device 800 are similar to those of the touch device 400 shown in FIG. 4 . The touch panel 80 of the touch device 800 further includes an interposer substrate 51 located on the shielding layer 12 and the display module. Between 18.

In the embodiment of the present invention, the first anti-reflection layer 15 disposed in the imaging window 14 helps to improve the light transmittance of the light passing through the imaging window 14, for example, increasing the light transmittance of about 90±2%. Up to about 94 ± 2%. In addition, the first anti-reflective layer 15 also helps to improve the sharpness of the image capturing component 185 when capturing images. Moreover, since the first anti-reflection layer 15 has a small area, it is only required to be limited to the range of the image pickup window 14, which contributes to lowering the production cost and improving the production yield.

The technical content and the technical features of the present disclosure have been disclosed as above, but those skilled in the art should understand that the teachings and disclosures of the present disclosure are disclosed without departing from the spirit and scope of the disclosure as defined by the appended claims. Can be used for various substitutions and modifications. For example, many of the elements disclosed above may be implemented in different structures or in other structures having the same function, or a combination of the two.

Moreover, the scope of the claims is not limited to the specific embodiments disclosed above. Device, component or structure. It should be understood by those of ordinary skill in the art that, in light of the teachings and disclosures of the present disclosure, the present invention, which is present in the present invention, The functions, while achieving substantially the same results, can also be used in this disclosure. Therefore, the following patent claims are intended to cover such devices, elements or structures.

10‧‧‧Touch panel

11‧‧‧Substrate

12‧‧‧Shielding layer

14‧‧‧ Camera window

15‧‧‧First anti-reflective layer

18‧‧‧ display module

100‧‧‧ touch device

101‧‧‧ first surface

102‧‧‧ second surface

185‧‧‧Image capture component

Claims (20)

A touch panel includes: a substrate; a shielding layer on a surface of the substrate, wherein the shielding layer comprises a camera window, a portion of the shielding layer is hollowed out and defined on a surface of the substrate; and a first anti-reflection layer, Located in the camera window. The touch panel of claim 1, wherein the shielding layer divides the substrate into a touch area and a peripheral area surrounding the touch area, and the shielding layer and the camera window are located in the peripheral area. The touch panel of claim 1, wherein the first anti-reflection layer covers a portion of the surface of the shielding layer. The touch panel of claim 1, wherein the first anti-reflection layer is defined in the image capturing window. According to the touch panel of claim 1, the second anti-reflection layer is further disposed between the substrate and the shielding layer. The touch panel of claim 5, wherein the shielding layer and the first anti-reflective layer are on the second anti-reflection layer. The touch panel of claim 5, wherein the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the second anti-reflective layer is located on the substrate a second surface, further comprising a third anti-reflective layer on the first surface of the substrate. The touch panel of claim 7, further comprising a functional layer on the third anti-reflective layer, wherein the functional layer comprises one of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer or Its combination. The touch panel of claim 1, wherein the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the shielding layer and the imaging window are located on the substrate a second surface, wherein the second anti-reflective layer is further disposed on the first surface of the substrate. The touch panel of claim 9, further comprising a functional layer on the second anti-reflective layer, wherein the functional layer comprises one of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer or Its combination. A touch device includes: a substrate; a shielding layer on a surface of the substrate, wherein the shielding layer comprises a camera window, wherein a part of the shielding layer is hollowed out and defined on a surface of the substrate; and a display module has a corresponding An image capturing component of the camera window; and a first anti-reflection layer located in the camera window. According to the touch device of claim 11, the shielding layer divides the substrate into a touch area and a peripheral area surrounding the touch area, and the shielding layer and the camera window are located in the peripheral area. The touch device of claim 11, wherein the first anti-reflective layer covers a portion of the surface of the shielding layer. According to the touch device of claim 11, a second anti-reflection layer is further disposed between the substrate and the shielding layer. The touch device of claim 14, wherein the shielding layer and the first anti-reflective layer are on the second anti-reflective layer. The touch device of claim 14, wherein the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the second anti-reflective layer is located on the substrate a second surface, further comprising a third anti-reflective layer on the first surface of the substrate. The touch device of claim 16, further comprising a functional layer on the third anti-reflective layer, wherein the functional layer comprises one of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer or Its combination. The touch device of claim 11, wherein the substrate has a first surface and a second surface, the first surface and the second surface are located on opposite sides of the substrate, and the shielding layer and the imaging window are located on the substrate a second surface, wherein the second anti-reflective layer is further disposed on the first surface of the substrate. The touch device of claim 18, further comprising a functional layer on the second anti-reflective layer, wherein the functional layer comprises one of an explosion-proof layer, an anti-glare layer, a hardened layer and an anti-fingerprint layer or Its combination. According to the touch device of claim 11, an interposer substrate is further disposed between the shielding layer and the display module.