TW202102985A - Touch panel equipped with optical scanning function - Google Patents

Abstract

A Touch panel quipped with optical scanning function comprises an upper transparent substrate, a lower transparent substrate, a first light shield film, a second light shield film, plural light devices, and plural optical sensors. The upper transparent substrate is spaced from the second transparent substrate, and the upper transparent substrate and the second transparent substrate respectively equipped with a first circuit layer and a second circuit layer. The first light shield film at least shields a part of the upper transparent substrate, and includes plural upper optical collimating holes. The second light shield film shields a parts of the lower transparent substrate, and includes plural lower optical collimating holes respectively corresponding to one of the upper optical collimating holes. The light devices are disposed on the upper surface of the lower transparent substrate, and each light device is arranged corre3sponding to one upper optical collimating hole. The optical sensors are located below the lower transparent substrate, and each optical sensor is arranged corresponding to one lower collimating hole for receiving light passing through the lower collimating hole.

Description

Touchpad with optical scanning function

The present invention relates to the combination of a light sensor and a touch panel, and particularly relates to a touch panel with optical scanning function.

The existing under-screen fingerprint recognition technology is to provide an optical scanning mechanism under the panel glass to scan fingerprints on the panel glass, thereby achieving the purpose of identifying fingerprints. The under-screen fingerprint recognition technology can be used to integrate the optical scanning mechanism into the display panel or the touch display panel, thereby simplifying the external structure of the handheld device.

The optical scanning mechanism used to capture fingerprints mainly uses the panel glass light source to illuminate the fingerprint, and then capture the reflected light for identification. The aforementioned light source usually uses the light source of the display panel itself, especially the pixel light source that drives the Organic Light-Emitting Diode (OLED) array panel. After the aforementioned light source needs to be received by the photo sensor array, the fingerprint characteristics are analyzed based on the reflected light received by each photo sensor.

In order to reduce the peripheral light interference after reflection, a light collimator needs to be set between the light sensor and the fingerprint surface to limit the light received by the light sensor to a specific direction, so as to ensure that the light sensor receives the correct reflected light. The existing optical collimators are all additional forms, which are attached under the display panel, and then the optical sensor array is arranged under the optical collimator. This additional design increases the overall thickness of the display panel equipped with the optical scanning mechanism, which is not conducive to the demand for lightweight and thin handheld devices.

The present invention provides a touch panel with optical scanning function, which combines the optical scanning function in the touch panel or touch display panel without adding extra thickness.

At least one embodiment of the present invention provides a touch panel with an optical scanning function, which includes an upper transparent substrate, a lower transparent substrate, a first light-shielding film, a second light-shielding film, a plurality of light-emitting elements, and a plurality of light sensors .

The upper transparent substrate is disposed on the lower transparent substrate, and an interval is maintained between the upper transparent substrate and the lower transparent substrate; the upper transparent substrate and the lower transparent substrate respectively have a first circuit layer and a second circuit layer, and the first circuit layer It is arranged on the lower surface of the upper transparent substrate, and the second circuit layer is arranged on the upper surface of the lower transparent substrate. The first light-shielding film is disposed on the upper transparent substrate to shield at least a part of the upper transparent substrate, and the first light-shielding film has a plurality of upper collimation holes. The second light-shielding film is disposed on the lower transparent substrate to shield at least a part of the lower transparent substrate, and the second light-shielding film has a plurality of lower collimating holes corresponding to the plurality of upper collimating holes, respectively. A plurality of light-emitting elements are arranged on the upper surface of the lower transparent substrate, and each light-emitting element is configured corresponding to an upper collimating hole, so that the light emitted by the light emitting element passes through the corresponding upper collimating hole. A plurality of light sensors are located under the lower transparent substrate, and each light sensor is arranged corresponding to a lower collimating hole, and receives light passing through the lower collimating hole.

In at least one embodiment of the present invention, the first light-shielding film is disposed on the lower surface of the upper transparent substrate.

In at least one embodiment of the present invention, the first light-shielding film is an opaque metal layer and extends over the first circuit layer.

In at least one embodiment of the present invention, the first circuit layer includes a multi-layer structure, and the first light-shielding film is an opaque metal layer or a black photoresist layer in the multi-layer structure.

In at least one embodiment of the present invention, the multilayer structure further includes at least one transparent conductive layer and at least one insulating layer.

In at least one embodiment of the present invention, the light sensor is disposed on the lower surface of the lower transparent substrate.

In at least one embodiment of the present invention, the touch panel with optical scanning function further includes a carrier substrate located below the lower transparent substrate, and the light sensor is disposed on the side of the carrier substrate facing the lower transparent substrate.

In at least one embodiment of the present invention, the second light-shielding film is an opaque metal layer disposed on the upper surface of the lower transparent substrate, and extends over the second circuit layer.

In at least one embodiment of the present invention, the second light-shielding film is disposed on the lower surface of the lower transparent substrate.

In at least one embodiment of the present invention, the second circuit layer is a transparent conductive layer including a plurality of thin film transistors.

In at least one embodiment of the present invention, the second light-shielding film is an opaque metal layer or a black photoresist layer.

In at least one embodiment of the present invention, a plurality of upper collimating holes are arranged at equal intervals in a horizontal direction, and a plurality of lower collimating holes are also arranged at equal intervals in a horizontal direction.

In at least one embodiment of the present invention, the plurality of upper collimating holes and the plurality of lower collimating holes are arranged staggered in the horizontal direction, and the projections of the plurality of upper collimating holes and the plurality of lower collimating holes do not all mutually overlapping.

In at least one embodiment of the present invention, each upper collimating hole has a first end point and a second end point in the horizontal direction, and the corresponding lower collimating hole has a third end point in the horizontal direction. End point and a fourth end point, define the distance between the second end point and the third end point as Z, a height between the first light-shielding film and the second light-shielding film is H, then Z=z1H, and 0 ≦z1≦50.

In at least one embodiment of the present invention, each upper collimating hole has a first end point and a second end point in the horizontal direction, and the corresponding lower collimating hole has a third end point in the horizontal direction. End point and a fourth end point, and the second end point is aligned with the third end point.

In at least one embodiment of the present invention, multiple light-emitting elements are part of a display array.

In at least one embodiment of the present invention, the plurality of light-emitting elements include at least one first light-emitting element, at least one second light-emitting element, and at least one third light-emitting element, which respectively emit a first wavelength light, a second wavelength light, and a The third wavelength light, and the corresponding multiple light sensors are a first light sensor, a second light sensor, and a third light sensor, respectively, which are used to sense the first wavelength light, Second wavelength light and third wavelength light.

In at least one embodiment of the present invention, the touch panel with optical scanning function further includes a cover glass disposed on the upper surface of the upper transparent substrate.

In at least one embodiment of the present invention, a hole area of the upper collimating hole or the lower collimating hole is defined as L ² , the thickness of the first light-shielding film or the second light-shielding film is D, and ^{the ratio of L 2} /D is preferably 0.1~50.

Through the present invention, the light collimating structure can be integrated into the necessary circuits of the touch panel with optical scanning function, without the need for additional structures to achieve the purpose of light collimation. Therefore, unnecessary addition of the light collimating structure can be avoided. thickness. At the same time, because the light collimating structure is integrated into the necessary circuits of the touch panel with optical scanning function, the manufacturing method can be simplified and the manufacturing cost can be reduced at the same time.

In the drawings, the width of some elements, regions, etc., are enlarged for clarity. The same element symbols represent the same elements throughout the specification. It should be understood that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements.

It should be understood that although the terms "first", "second", "third", etc. can be used to describe various elements, components, regions or parts throughout the specification. However, these elements, components, regions, and/or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region or section from another element, component, region, layer or section. Therefore, the “first element,” “component,” “region,” or “portion” discussed below may be referred to as a second element, component, region, or portion without departing from the teachings herein.

In addition, relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe the relationship between one element and another element, as shown in the figure. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one drawing is turned over, the elements described as being on the "lower" side of other elements will be oriented on the "upper" side of other elements. Therefore, the exemplary term "under" can include the orientations of "under" and "上", depending on the specific orientation of the schema.

Please refer to FIG. 1 and FIG. 2, which is a touch panel 100 with optical scanning function disclosed in an embodiment of the present invention. It includes an upper transparent substrate 110, a lower transparent substrate 120, a first light-shielding film 130, and a first Two light-shielding films 140, a plurality of light-emitting elements 150, and a plurality of light sensors 160. A specific embodiment of the optical scanning function is fingerprint scanning, that is, the touch panel 100 with optical scanning function may be a touch panel with fingerprint scanning function, but is not limited to this.

As shown in FIG. 2, the upper transparent substrate 110 is disposed on the lower transparent substrate 120, and a gap is maintained between the upper transparent substrate 110 and the lower transparent substrate 120. The interval may be hollow, and a plurality of spacers (not shown) are arranged between the upper transparent substrate 110 and the lower transparent substrate 120 to maintain the size of the interval. A transparent base film (not shown) can also be clamped between the upper transparent substrate 110 and the lower transparent substrate 120 to form a gap. The upper transparent substrate 110 and the lower transparent substrate 120 respectively have a first circuit layer 110a and a second circuit layer 120a. Among them, the first circuit layer 110 a is disposed on the lower surface of the upper transparent substrate 110, and the second circuit layer 120 a is disposed on the upper surface of the lower transparent substrate 120. The first circuit layer 110a and the second circuit layer 120a may include touch circuits for generating a capacitive coupling effect to be converted into touch signals. The first circuit layer 110a and the second circuit layer 120a may also be thin film transistor arrays including other circuits, for example, driving organic light-emitting diode (OLED) arrays.

As shown in FIGS. 1 and 2, the first light shielding film 130 is disposed on the upper transparent substrate 110 to shield at least a part of the upper transparent substrate 110, and the first light shielding film 130 has a plurality of upper collimating holes 132. In the first embodiment, the first light-shielding film 130 is disposed on the lower surface of the upper transparent substrate 110, and the position may be close to the edge of the upper transparent substrate 110. The first light-shielding film 130 may be an opaque metal layer and extends over the first circuit layer 110a, that is, the first light-shielding film 130 is a part of the first circuit layer 110a and is located close to the edge of the upper transparent substrate 110.

As shown in FIG. 2, the second light shielding film 140 is disposed on the lower transparent substrate 120 to shield at least a part of the lower transparent substrate 120, and the second light shielding film 140 has a plurality of lower collimating holes 142. The plurality of lower collimating holes 142 respectively correspond to the plurality of upper collimating holes 132, wherein the upper collimating holes 132 are arranged at equal intervals in a horizontal direction X, and the lower collimating holes 142 are also arranged at equal intervals in the horizontal direction X At the same time, the upper collimating holes 132 and the lower collimating holes 142 are alternately arranged in the horizontal direction X, so that the central axes of the upper collimating holes 132 and the lower collimating holes 142 have a certain offset in the horizontal direction X, Moreover, the projections of the upper collimating hole 132 and the lower collimating hole 142 do not overlap each other. In the first embodiment, the second light shielding film 140 is disposed on the upper surface of the lower transparent substrate 120, and the position may be close to the edge of the lower transparent substrate 120. The second light-shielding film 140 can be an opaque metal layer disposed on the upper surface of the lower transparent substrate 120 and extends over the second circuit layer 120a, that is, the second light-shielding film 140 is a part of the second circuit layer 120a, and The location is close to the edge of the upper transparent substrate 110.

As shown in FIG. 3, the first circuit layer 110a may include a multilayer structure. For example, the first circuit layer 110a includes a first light-shielding film 130, a plurality of transparent conductive layers 112 (such as an indium tin oxide layer), and a plurality of insulating layers 114 ( For example, a silicon dioxide layer), and the first light-shielding film 130 is an opaque metal layer in the foregoing multilayer structure, or a black photoresist layer located at the edge of the display panel as a black matrix (Black Matrix).

As shown in FIG. 4, the second light-shielding film 140 is not limited to being provided on the upper surface of the lower transparent substrate 120, but may also be provided on the lower surface of the lower transparent substrate 120; and the second circuit layer 120a is provided on the upper surface, and The second light shielding film 140 is separated. The second circuit layer 120a may be a transparent conductive layer including a plurality of thin film transistors 120b, and is disposed on the upper surface of the lower transparent substrate 120 to drive the light emitting element 150. The second light-shielding film 140 may be a opaque metal layer, or a black photoresist layer located at the edge of the display panel as a black matrix (Black Matrix).

As shown in FIGS. 1 and 2, a plurality of light-emitting elements 150 are disposed on the upper surface of the lower transparent substrate 120, and each light-emitting element 150 corresponds to an upper collimating hole 132, so that the light emitted by it can pass through the corresponding The upper collimating hole 132 is reflected by the object 200 to be scanned.

As shown in FIGS. 1, 2 and 3, in the first embodiment, the touch panel 100 with optical scanning function further includes a cover glass 170, which is disposed on the upper surface of the upper transparent substrate 110 to protect against impact and abrasion. . The object 200 to be scanned is placed on the cover glass 170, so the light emitted by the light emitting element 150 first passes through the upper transparent substrate 110 and the cover glass 170 and then is reflected by the object 200 to be scanned. The cover glass 170 can also be omitted. The object 200 to be scanned is placed on the upper surface of the upper transparent substrate 110, and the light emitted by the light emitting element 150 reaches the upper surface of the upper transparent substrate 110 and is reflected by the object 200 to be scanned.

The aforementioned light-emitting element 150 may be a part of a display array, such as a part of an organic light-emitting diode array. That is, the touch panel 100 with optical scanning function of the present invention may actually be an organic light emitting diode display panel, which integrates touch and optical scanning functions.

As shown in FIGS. 1 and 2, the light sensors 160 are disposed on the lower surface of the lower transparent substrate 120, and each light sensor 160 is disposed corresponding to a lower collimating hole 142, so as to receive the light passing through the lower collimating hole 142. Light. As mentioned above, the light-emitting element 150 may be part of a display array, that is, the light-emitting element 150 may include a plurality of first light-emitting elements 152, a plurality of second light-emitting elements 154, and a plurality of third light-emitting elements 156 in a staggered arrangement. The first wavelength light, the second wavelength light, and the third wavelength light are respectively emitted, and the corresponding light sensors 160 are the first light sensor 162, the second light sensor 164, and the third light sensor respectively 166, respectively used for sensing the first wavelength light, the second wavelength light, and the third wavelength light. For example, the first light-emitting element 152, the second light-emitting element 154, and the third light-emitting element 156 are respectively a red light element, a green light element, and a blue light element. Correspondingly, the first light sensor 162, the second light sensor 164, and the third light sensor 166 are a red light sensor, a green light sensor, and a blue light sensor, respectively. In this way, the first light sensor 162, the second light sensor 164, and the third light sensor 166 can be prevented from being interfered by other adjacent light emitting elements 150, and the accuracy of optical scanning can be improved.

Referring to FIG. 5, it is another configuration of the first light sensor 162, the second light sensor 164, and the third light sensor 166. The touch panel 100 may further include a carrier substrate 180 located below the lower transparent substrate 120, and the first photo sensor 162, the second photo sensor 164, and the third photo sensor 166 are disposed on the carrier substrate 180 facing toward One side of the lower transparent substrate 120. The carrier substrate 180 can be used to directly attach to the subsequent assembly structure, such as attaching to the bottom case or the motherboard of the electronic device. In other words, the first light sensor 162, the second light sensor 164, and the third light sensor 166 are arranged as long as the relative position is below the lower transparent substrate 120, and each first light sensor 162, the second light sensor 164 and the third light sensor 166, respectively, the light sensors 162, 164, and 166 can be arranged corresponding to one lower collimating hole 142, and are not limited to being directly arranged on the lower transparent substrate 120的下面。 The bottom surface.

As shown in FIG. 6, when an object 200 to be optically scanned, such as the fingerprint surface of a finger, is placed on the upper surface of the upper transparent substrate 110 or the upper surface of the cover glass 170, it means that the object 200 is placed on Cover glass 170, whereby the light emitted by the light emitting element 150 can pass through the corresponding upper collimating hole 132, penetrate the cover glass 170 and be reflected by the object 200, then return to the upper collimating hole 132 and pass through the corresponding lower The collimating hole 142 reaches the corresponding light sensor 160 to analyze the characteristics of the surface of the object 200, such as fingerprint features, through the reflected light.

As shown in FIG. 7, it is a top view of the first light-shielding film 130 or the second light-shielding film 140, and the upper collimating hole 132 or the lower collimating hole 142 of the same type as the figure is shown in the figure. The upper collimating hole 132 or the lower collimating hole 142 may have any shape, such as a circle, an ellipse, a rectangle, or a more complicated polygon. Referring again to Table 1, the larger the hole area of the upper collimating hole 132 or the lower collimating hole 142 is, the smaller the brightness attenuation rate after the light penetrates. And the height of the upper collimating hole 132 or the lower collimating hole 142 in the thickness direction of the first light-shielding film 130 or the second light-shielding film 140, that is, the greater the thickness of the first light-shielding film 130 or the second light-shielding film 140, The greater the brightness attenuation rate, the smaller the reflection interference coefficient. To a thickness of 100 Angstroms (Ǻ), for example, aperture area of 600 μm ² when the maximum luminance decay rate of 10%, while the hole area of 1000 μm ² when the minimum attenuation rate of 1%, but the interference reflection coefficient has been raised . If the hole area is 730 μm ² as an example to compare the thickness effect, a thickness of 100 angstroms (Ǻ) has the smallest brightness attenuation rate and the largest reflection interference, while a thickness of 2000 angstroms (Ǻ) has the largest brightness attenuation rate and the smallest reflection interference. . However, when the thickness is large (for example, 2000 angstroms), the increase of the hole area will increase the reflection interference. Hole area 600 μm ² Hole area 730 μm ² Hole area 1000 μm ² Thickness 100 Ǻ Brightness attenuation rate 10%, reflection interference 0.8 Brightness attenuation rate 7%, reflection interference 0.9 Brightness attenuation rate 1%, reflection interference 0.9 Thickness 1000 Ǻ Brightness attenuation rate 24%, reflection interference 0.14 Brightness attenuation rate 11%, reflection interference 0.23 Brightness attenuation rate 1%, reflection interference 0.35 Thickness 2000 Ǻ Brightness attenuation rate 33%, reflection interference 0.02 Brightness attenuation rate 11%, reflection interference 0.1 Brightness attenuation rate 1.5%, reflection interference 0.13 Table I

As shown in FIG. 8, therefore, the hole area of the upper collimating hole 132 or the lower collimating hole 142 is defined as L ² , and the thickness of the first light-shielding film 130 or the second light-shielding film 140 is D, the ratio of ^{L 2 /D} It is preferably 0.1-50 to strike a balance between the brightness attenuation rate and reflection interference.

Referring to Figures 8 and 9, the upper collimating hole 132 and the lower collimating hole 142 have a certain offset on the horizontal axis X center axis, so that the projection of the upper collimating hole 132 and the lower collimating hole 142 will not be All of them overlap each other to reduce the horizontal light of the traveling path from being projected to the other upper collimating hole 132 or the lower collimating hole 142.

As shown in FIG. 8, it is defined that each upper collimating hole 132 has a first end point 132a and a second end point 132b in order in the horizontal direction X, and the corresponding lower collimating hole 142 is in order in the horizontal direction X. There is a third terminal 142a and a fourth terminal 142b. The projections of the upper collimating hole 132 and the corresponding lower collimating hole 142 in the horizontal direction X may not overlap at all, and the second end point 132b and the third end point 142a are tangent.

Or, as shown in FIGS. 2, 5, 6 and 9, the projections of the upper collimating hole 132 and the corresponding lower collimating hole 142 in the horizontal direction X only partially overlap. As shown in FIG. 9, the distance between the second end point 132b and the third end point 142a is defined as Z, and there is a height H between the first light-shielding film 130 and the second light-shielding film 140, and Z satisfies Z= The relationship between z1H, and z1 is not greater than 50, that is, 0>z1≦50.

Through the present invention, the light collimating structure can be integrated into the necessary circuits of the touch panel 100 with optical scanning function, without the need for additional structures to achieve the purpose of light collimation. Therefore, unnecessary thickness increase of the light collimating structure can be avoided. At the same time, because the light collimating structure is integrated into the necessary circuits of the touch panel 100 with optical scanning function, the manufacturing method can be simplified and the manufacturing cost can be reduced at the same time.

100: touch panel with optical scanning function 110: upper transparent substrate 110a: first circuit layer 112: transparent conductive layer 114: insulating layer 120: lower transparent substrate 120a: second circuit layer 120b: thin film transistor 130: first Light-shielding film 132: upper collimation hole 132a: first end point 132b: second end point 140: second light-shielding film 142: lower collimation hole 142a: third end point 142b: fourth end point 150: light-emitting element 152: First light emitting element 154: Second light emitting element 156: Third light emitting element 160: Light sensor 162: First light sensor 164: Second light sensor 166: Third light sensor 170: Cover glass 180: carrier substrate 200: object D: thickness X: horizontal direction H: height L ² : hole area Z: distance

FIG. 1 is an exploded perspective view of a touch panel with optical scanning function in an embodiment of the present invention. 2 is a partial cross-sectional view of a touch panel with optical scanning function in an embodiment of the present invention. 3 is a partial cross-sectional view of the upper transparent substrate and the first circuit layer in the embodiment of the present invention. 4 is a partial cross-sectional view of the lower transparent substrate and the second circuit layer in the embodiment of the present invention. FIG. 5 is another partial cross-sectional view of the touch panel with optical scanning function in the embodiment of the present invention. FIG. 6 is a partial cross-sectional view of a touch panel with optical scanning function in an embodiment of the present invention, revealing the traveling state of light for scanning fingerprints. FIG. 7 is a top view of the first light-shielding layer or the second light-shielding layer in an embodiment of the present invention. FIG. 8 is a partial cross-sectional view of the first light-shielding layer and the second light-shielding layer in an embodiment of the present invention. FIG. 9 is a partial cross-sectional view of the first light-shielding layer and the second light-shielding layer in an embodiment of the present invention.

100: Touchpad with optical scanning function

110: upper transparent substrate

110a: the first circuit layer

120: Lower transparent substrate

120a: second circuit layer

130: The first shading film

132: Upper collimation hole

140: second shading film

142: Lower collimation hole

152: The first light-emitting element

154: second light-emitting element

156: third light-emitting element

162: The first light sensor

164: second light sensor

166: Third Light Sensor

170: Cover glass

X: horizontal direction

200: Object

Claims (19)

A touch panel with optical scanning function, including: An upper transparent substrate and a lower transparent substrate, wherein the upper transparent substrate is disposed on the lower transparent substrate, and an interval is maintained between the upper transparent substrate and the lower transparent substrate; the upper transparent substrate and the lower transparent substrate are respectively Having a first circuit layer and a second circuit layer, the first circuit layer is disposed on a lower surface of the upper transparent substrate, and the second circuit layer is disposed on an upper surface of the lower transparent substrate; A first light-shielding film disposed on the upper transparent substrate to shield at least a part of the upper transparent substrate, and the first light-shielding film has a plurality of upper collimating holes; A second light-shielding film disposed on the lower transparent substrate to shield at least a part of the lower transparent substrate, and the second light-shielding film has a plurality of lower collimating holes corresponding to the plurality of upper collimating holes; A plurality of light-emitting elements are arranged on the upper surface of the lower transparent substrate, and each light-emitting element is configured corresponding to one of the upper collimating holes, so that the light emitted by the light-emitting element passes through the corresponding upper collimating hole; and A plurality of light sensors are located under the lower transparent substrate, and each light sensor is arranged corresponding to one of the lower collimating holes, and receives light passing through the lower collimating holes. The touch panel with optical scanning function according to claim 1, wherein the first light-shielding film is disposed on the lower surface of the upper transparent substrate. The touch panel with optical scanning function according to claim 2, wherein the first light-shielding film is an opaque metal layer and extends on the first circuit layer. The touch panel with optical scanning function according to claim 2, wherein the first circuit layer includes a multilayer structure, and the first light-shielding film is an opaque metal layer or a black photoresist in the multilayer structure Floor. The touch panel with optical scanning function according to claim 4, wherein the multilayer structure further includes at least one transparent conductive layer and at least one insulating layer. The touch panel with optical scanning function according to claim 1, wherein the light sensors are arranged on the lower surface of the lower transparent substrate. The touch panel with optical scanning function according to claim 1, further comprising a carrier substrate located below the lower transparent substrate, and the light sensors are arranged on a side of the carrier substrate facing the lower transparent substrate. The touch panel with optical scanning function according to claim 1, wherein the second light-shielding film is an opaque metal layer provided on the upper surface of the lower transparent substrate, and extends on the second circuit Floor. The touch panel with optical scanning function according to claim 1, wherein the second light shielding film is disposed on the lower surface of the lower transparent substrate. The touch panel with optical scanning function according to claim 8 or 9, wherein the second circuit layer is a transparent conductive layer including a plurality of thin film transistors. The touch panel with optical scanning function according to claim 9, wherein the second light-shielding film is an opaque metal layer or a black photoresist layer. The touch panel with optical scanning function according to claim 1, wherein the plurality of upper collimating holes are arranged at equal intervals in a horizontal direction, and the plurality of lower collimating holes are also equally spaced in the horizontal direction arrangement. The touch panel with optical scanning function according to claim 12, wherein the plurality of upper collimating holes and the plurality of lower collimating holes are alternately arranged in the horizontal direction, and the plurality of upper collimating holes and The projections of the plurality of lower collimating holes will not all overlap with each other. The touch panel with optical scanning function according to claim 13, wherein each of the upper collimation holes has a first end point and a second end point in the horizontal direction in sequence, and the corresponding lower collimation hole The straight hole has a third end point and a fourth end point in sequence in the horizontal direction, and the distance between the second end point and the third end point is defined as Z, the first light-shielding film and the second end point A height between the light-shielding films is H, then Z=z1H, and 0>z1≦50. The touch panel with optical scanning function according to claim 13, wherein each of the upper collimation holes has a first end point and a second end point in the horizontal direction in sequence, and the corresponding lower collimation hole The straight hole has a third end point and a fourth end point in sequence in the horizontal direction, and the second end point is tangent to the third end point. The touch panel with optical scanning function according to claim 1, wherein the plurality of light-emitting elements are part of a display array. The touch panel with optical scanning function according to claim 16, wherein the plurality of light-emitting elements include at least one first light-emitting element, at least one second light-emitting element, and at least one third light-emitting element, each emitting a first light-emitting element Wavelength light, a second wavelength light, and a third wavelength light, and the corresponding light sensors are a first light sensor, a second light sensor, and a third light sensor, respectively , Respectively used for sensing the first wavelength light, the second wavelength light and the third wavelength light. The touch panel with optical scanning function according to claim 1, further comprising a cover glass disposed on an upper surface of the upper transparent substrate. The touch panel with optical scanning function according to claim 1, wherein a hole area that defines the upper collimation hole or the lower collimation hole is L ² , and the area of the first light-shielding film or the second light-shielding film The thickness is D, and ^{the ratio of L 2} /D is 0.1-50.

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