TWI691875B - Detection-display device and display module using the same - Google Patents

Abstract

A detection-display device includes a display panel, a position identifying pattern layer, an adhesive layer, and a cover. The position identifying pattern layer is disposed above the display panel and includes a plurality of code patterns. Each of the code patterns includes a first body and at least one first microstructure connecting to the first body. The first body is between the display panel and the first microstructure, and the first microstructure has a size less than that of the first body. The adhesive layer is disposed above the identifying pattern layer. The cover is disposed above the adhesive layer.

Description

Sensing display device and display module using the same

This disclosure relates to a sensing display device and a display module using the same.

As the development of electronic product design has grown stronger, many electronic products with high functionality have been gradually developed. In terms of products that provide users with display screens, their product trends allow users to directly perform touch operations on the display screen, so that the operation process can be more intuitive, and the development of related products is also highly optimistic.

Specifically, in addition to direct operation by the user's finger, this type of operation method is also developed to be used with a stylus, such as a graphics tablet or an electronic notebook. For products that are additionally equipped with a stylus, there are many ways to sense touch, which can be roughly classified as contact or non-contact. However, whether it is a contact type or a non-contact type, since the touch accuracy will affect the user's operating experience, the touch accuracy of such products has become one of the development directions in related fields.

One embodiment of the present disclosure provides a sensing display device, including a display panel, a position recognition layer, a bonding glue, and a cover plate. The position recognition layer is set on the display panel and includes a code point, wherein the code point includes a first body and a first microstructure connected to the first body, the first body is located between the display panel and the first microstructure, and the first The size of a microstructure is smaller than the size of the first body. The bonding glue is set on the position recognition layer. The cover plate is set on the bonding glue.

In some embodiments, the material of the code point is metal.

In some embodiments, the sensing display device further includes a light-transmitting substrate. The transparent substrate is disposed between the position recognition layer and the display panel, and the transparent substrate includes a second body and a second microstructure. The second body is provided on the display panel. The second microstructure is connected to the second body and covered by code points, wherein the size of the second microstructure is smaller than the size of the second body.

In some embodiments, the transparent substrate further includes a third microstructure. The third microstructure is connected to the second body and covered by the bonding glue, wherein the size of the third microstructure is smaller than the size of the second body.

In some embodiments, the sensing display device further includes a light-transmitting substrate. The transparent substrate is disposed between the position recognition layer and the display panel, and the transparent substrate includes a second body and a second microstructure. The second body is provided on the display panel. The second microstructure is connected to the second body and is covered by code points, and the size of the second microstructure is smaller than the size of the second body, wherein the second body and the bonding glue form a first interface, the code point and the second microstructure A second interface is formed, and the roughness of the first interface is smaller than the roughness of the second interface.

In some embodiments, the first microstructure of the code point is conformal with the second microstructure of the transparent substrate.

In some embodiments, the sensing display device further includes a passivation layer. The position recognition layer is between the passivation layer and the display panel, and the bonding glue is between the passivation layer and the cover plate.

In some embodiments, the first microstructure has a first part and a second part, the first part is between the first body and the second part, and the vertical projection of the second part on the first body is located in the first part In the vertical projection on the first body.

In some embodiments, the first microstructure is a granular structure protruding from the first body away from the display panel.

In some embodiments, the projection shape of the code point on the display panel is rod-shaped.

In some embodiments, the code point has a length and a width, the length is greater than the width, and the width is between 10 microns and 20 microns.

In some embodiments, the height of the first microstructure is between 100 nm and 300 nm.

In some embodiments, the refractive index of the bonding glue is between 1.4 and 1.6.

An embodiment of the disclosure provides a display module including a sensing display device and an operation object, wherein the operation object includes an invisible light emitter and an invisible light receiver.

Through the above configuration, the surface of the code point of the position recognition layer can exhibit an undulating shape. Through the undulating shape of the code point, in addition to increasing the amount of reflection of the code point to the light, it can also enhance the chance of the code point reflecting the light back to its original emission position. In the case of increasing the amount of reflection of invisible light through the code point and increasing the chance of reflection of invisible light to the invisible light receiver, it can facilitate the analysis of the operating object The relative position relationship between the device and the sensing display device, thereby increasing the accuracy of determining the touch position.

100A, 100B, 100C, 100D, 100E, 100F sensing display device

110‧‧‧Display panel

112‧‧‧Pixel area

120‧‧‧Transparent substrate

122‧‧‧Second body

124‧‧‧Second microstructure

126‧‧‧The third microstructure

130‧‧‧ Location recognition layer

132‧‧‧ code points

134‧‧‧ first body

136‧‧‧The first microstructure

137‧‧‧Part 1

138‧‧‧Part 2

139‧‧‧Part III

140‧‧‧ Laminating adhesive

150‧‧‧cover

160‧‧‧passivation layer

200‧‧‧Operation object

202‧‧‧Invisible light transmitter

204‧‧‧Invisible light receiver

206‧‧‧Invisible light

DH‧‧‧Horizontal

DV‧‧‧Vertical

H1, H2, H3, H4, H5, H6 ‧‧‧ height

I1‧‧‧The first interface

I2‧‧‧Second interface

L‧‧‧Length

W‧‧‧Width

FIG. 1A is a schematic side view showing a sensing display device according to the first embodiment of the present disclosure.

FIG. 1B is an enlarged schematic diagram of the code point in FIG. 1A.

FIG. 1C is a schematic diagram illustrating the distribution positions of the code points in FIG. 1A relative to the display device below it.

FIG. 1D is a schematic diagram illustrating an application manner of the sensing display device of FIG. 1A.

FIG. 2 is a schematic side view of a sensing display device according to a second embodiment of the present disclosure.

FIG. 3 is a schematic side view of a sensing display device according to a third embodiment of the present disclosure.

FIG. 4 is a schematic side view of a sensing display device according to a fourth embodiment of the present disclosure.

FIG. 5A is a schematic side view of a sensing display device according to a fifth embodiment of the present disclosure.

FIG. 5B is an enlarged schematic view of the code point in FIG. 5A.

FIG. 6A is a schematic side view of a sensing display device according to a sixth embodiment of the present disclosure.

FIG. 6B is an enlarged schematic diagram of the code point in FIG. 6A.

In the following, a plurality of embodiments of the present invention will be disclosed in the form of diagrams. For the sake of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in a simple schematic manner in the drawings.

In this article, the terms first, second, third, etc. are used to describe various elements, components, regions, and layers that can be understood. But these elements, components, regions, layers should not be limited by these terms. These vocabularies are limited to identifying single components, components, regions, and layers. Therefore, a first element, component, region, layer in the following may also be referred to as a second element, component, region, layer without departing from the original intention of the present invention.

The sensing display device of the present disclosure is an operable sensing display device, that is, in addition to the function of displaying images, the sensing display device can also sense the touch position of the user, thereby providing the user with Touch operation.

Please refer to FIG. 1A. FIG. 1A is a schematic side view illustrating a sensing display device 100A according to the first embodiment of the present disclosure. The sensing display device 100A includes a display panel 110, a transparent substrate 120, a position recognition layer 130, a bonding glue 140 and a cover plate 150, wherein the transparent substrate 120, the position recognition layer 130, the bonding glue 140 and the cover plate 150 are stacked On the display panel 110.

The display panel 110 can be used to provide images, wherein the display panel 110 The provided image can be viewed by the user after passing through the transparent substrate 120, the adhesive 140 and the cover plate 150, that is, the upper surface of the display panel 110 can be used as its display surface.

The transparent substrate 120 is disposed on the display panel 110, wherein the transparent substrate 120 can be attached to the upper surface of the display panel 110, however, the disclosure is not limited to this configuration, and in other embodiments, additional support may be provided. The structure (not shown) is between the display panel 110 and the transparent substrate 120 so that there is an air gap between the display panel 110 and the transparent substrate 120. In addition, the transparent substrate 120 may be a glass substrate, a diffused glass plate, an optical film, or other transparent substrates.

The position recognition layer 130 is disposed on the transparent substrate 120 and contacts the transparent substrate 120. The position recognition layer 130 includes a plurality of code points 132, wherein the material of the code points 132 may be metal or other light reflective materials, so that the code points 132 can be light reflective.

Please see Figure 1A and Figure 1B at the same time. Figure 1B shows an enlarged schematic view of the code point 132 of Figure 1A. Each code point 132 includes a first body 134 and a first microstructure 136 connected to the first body 134, wherein the first body 134 is located between the transparent substrate 120 and the first microstructure 136, and the first microstructure The size of the structure 136 is smaller than the size of the first body 134. Specifically, in this embodiment, the height H1 of the first body 134 may be between 300 nm and 500 nm, and the height H2 of the first microstructure 136 may be between 100 nm and 300 nm . The cross-section of the first microstructure 136 is generally triangular, and through this configuration, the upper surface of the code point 132 will exhibit an undulating shape.

The code point 132 may be formed on the light-transmitting substrate 120 through a lithography process. For example, a layered body can be formed on the light-transmitting substrate 120 first, and code points can be formed by exposing and etching the layered body. At this time, the formed code points are listed in the table above. The surface has not shown ups and downs. In some embodiments, the surface of the formed code point may be bombarded, for example, using gas particles to form a microstructure as shown in FIG. 1B. In other embodiments, the formed code points can then be exposed and etched to form the microstructure as shown in FIG. 1B, wherein the distribution position, morphology and size of the formed microstructure can depend on the light used Adjust the mask pattern or etching time. For example, the formed microstructures may also be strips, irregular depressions, or other shapes that can make the upper surface of the code point 132 exhibit a undulating shape.

Please refer to FIG. 1C again. FIG. 1C is a schematic diagram illustrating the distribution positions of the code points 132 of FIG. 1A relative to the display panel 110 therebelow. The angle of view depicted in FIG. 1C is to look at the sensing display device 100A from a top view (that is, from above the sensing display device 100A of FIG. 1A to the sensing display device 100A). As shown in FIG. 1C, the display panel 110 has a plurality of pixel regions 112, which generally have a rectangular-like shape, and are arranged in an array along the horizontal direction DH and the vertical direction DV of FIG. 1C.

The projected shape of the code point 132 on the display panel 110 is rod-shaped. Specifically, when looking at the code point 132 from a top view (that is, when looking at the code point 132 from above the sensing display device 100A in FIG. 1A), the code point 132 will be in the shape of a bar, and these bar-shaped codes The extending direction of the dot 132 is different from the horizontal direction DH and the vertical direction DV of FIG. 1C, that is, the extending direction of the code point 132 is different from the arrangement direction of the pixel regions 112 of the display panel 110. In addition, the code point 132 has a length L and a width W, and the length L is greater than the width W, wherein the length L may be between 130 μm and 150 μm, and the width W may be between 10 μm and 20 μm. By arranging the code points 132 in the arrangement direction of the oblique pixel regions 112 and designing the code points 132 as described above The size can reduce the visibility of the code point 132 by the human eye, thereby preventing the code point 132 from interfering with the user's viewing experience.

Please go back to Figure 1A. The bonding glue 140 is disposed on the light-transmitting substrate 120 and contacts the light-transmitting substrate 120 and the position recognition layer 130. The bonding glue 140 is light-transmissive, which may be, for example, water glue or optical glue. In addition, the refractive index of the adhesive 140 can be matched with the transparent substrate 120. For example, when the transparent substrate 120 is a glass substrate, the refractive index of the adhesive 140 can be between 1.4 and 1.6 to help pass through The light from the transparent substrate 120 is incident into the bonding glue 140. The cover plate 150 is disposed on the position recognition layer 130 and the bonding glue 140, and has light transmittance, which may be, for example, a flexible substrate or other light-transmissive substrates, and the cover plate 150 may be adhered by the bonding glue 140 Sex and fixed. The cover plate 150 can be used as a protective layer to protect the layer body or component underneath from wear. In the structure depicted in FIG. 1A, there is a gap between the code point 132 of the position recognition layer 130 and the cover plate 150, and are separated from each other by the bonding glue 140. However, in other embodiments, when the bonding glue 140 is filled between the transparent substrate 120 and the cover 150, the code point 132 of the position recognition layer 130 may also contact the cover 150.

Through the above configuration, when light travels from above the sensing display device 100A toward the sensing display device 100A and contacts the code point 132, since the upper surface of the code point 132 presents an undulating shape, the code point 132 can be increased for The amount of light reflected. In addition, through the undulating topography of the code point 132, the chance of the code point 132 reflecting light back to its original emission position can be improved.

For example, please see FIG. 1D, which illustrates a schematic diagram of an application manner of the sensing display device 100A of FIG. 1A. As shown in FIG. 1D, the sensing display device 100A of FIG. 1A can be used as an operation object 200 to become an The display module (that is, the display module includes the sensing display device 100A and the operation object 200). The sensing display device 100A can provide images through the display panel 110 and provide an operation interface (such as a virtual menu). The operation object 200 can be used for a user to operate an operation interface (such as a virtual menu) provided by the sensing display device 100A.

The operation object 200 may include an invisible light emitter 202 and an invisible light receiver 204, where the invisible light may be, for example, an infrared band or an ultraviolet band. When the user operates by operating the object 200, the invisible light emitter 202 of the operating object 200 may emit invisible light 206 toward the sensing display device 100A.

When the invisible light 206 illuminates the sensing display device 100A, the invisible light 206 irradiated on the code point 132 can be reflected by the code point 132, wherein the code point 132 having an undulating shape can facilitate the reflection of the invisible light 206 back to close to the operation object 200 For example, the code point 132 may reflect the invisible light 206 to the invisible light receiver 204. In addition, the code dots 132 having an undulating shape can also increase the amount of reflection of the invisible light 206, so that the invisible light receiver 204 can receive more invisible light 206 reflected from the code dot 132. Specifically, the invisible light 206 may be reflected to the invisible light receiver 204 via the first microstructure 136; or, the invisible light 206 may be reflected to the first body 134 via the first microstructure 136 and then reflected via the first body 134 Invisible light receiver 204, and vice versa.

The operation object 200 can form a black-and-white or gray-scale image by receiving reflected invisible light 206, wherein the contrast of the black-and-white or gray-scale image is related to the amount of light received, and the position of the code point 132 and its Alignment (ie, the tilt direction of the rod-shaped code point 132), so as to determine the touch position of the operation object 200. In other words, increase the invisible light 206 through the code point 132 The amount of reflection increases the chance of the invisible light 206 reflecting to the invisible light receiver 204, which facilitates the analysis of the relative positional relationship between the operating object 200 and the sensing display device 100A, thereby increasing the accuracy of the display module in determining the touch position.

In addition, in some embodiments, the operation object 200 may further include a filter layer (not shown), so as to prevent misjudgment caused by receiving light of an unexpected wavelength.

Please refer to FIG. 2 again. FIG. 2 is a schematic side view illustrating the sensing display device 100B according to the second embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that the light-transmitting substrate 120 of this embodiment has a microstructure. Specifically, the transparent substrate 120 of this embodiment may be a glass substrate, such as a diffused glass plate, and as shown in FIG. 2, the transparent substrate 120 includes a second body 122, a second microstructure 124, and a third The microstructure 126 in which the second body 122 is disposed on the display panel 110.

The second microstructure 124 is connected to the second body 122 and covered by the code point 132, and the second body 122 is located between the display panel 110 and the second microstructure 124, wherein the size of the second microstructure 124 is smaller than that of the second body 122 size. The third microstructure 126 is connected to the second body 122 and covered by the bonding glue 140, and the second body 122 is located between the display panel 110 and the third microstructure 126, wherein the size of the third microstructure 126 is smaller than the second body 122 size of. Through the second microstructure 124 and the third microstructure 126, the upper surface of the light-transmitting substrate 120 will exhibit an undulating shape.

In this embodiment, the second microstructure 124 and the third microstructure 126 of the transparent substrate 120 can be formed by surface treatment, such as when the transparent substrate 120 is a glass substrate, it can be formed by sandblasting or ion beam bombardment Microstructure, wherein the second microstructure 124 and the third microstructure 126 may be through the same channel The surface treatment process is formed to simplify the process and facilitate the production of glass substrates with microstructures. In addition, the size of the second microstructure 124 and the size of the third microstructure 126 may be slightly the same as the size of the first microstructure 136 of the first embodiment, that is, the height of the second microstructure 124 and the height of the third microstructure 126 It can be between 100 nm and 300 nm.

The relief topography of the first microstructure 136 of the code point 132 can be formed by the relief topography of the second microstructure 124 of the light-transmitting substrate 120. Specifically, when the code dots 132 are formed on the transparent substrate 120 having the second microstructure 124, the code dots 132 will conform to the second microstructure 124 of the transparent substrate 120 underneath, so as to be on the surface The first microstructure 136 is formed. Therefore, the shape of the first microstructure 136 of the code point 132 is approximately the same as the shape of the second microstructure 124 of the transparent substrate 120, and the roughness caused by the first microstructure 136 of the code point 132 can be The roughness caused by the second microstructure 124 of the transparent substrate 120 is approximately equal, wherein the roughness (Ra) is approximately between 100 nm and 300 nm. Through this configuration, the surface treatment of the code point 132 can be omitted, thereby making the process of the position recognition layer 130 more flexible.

The bonding glue 140 covering the third microstructure 126 can be filled into the gap of the sidewall of the third microstructure 126, and the refractive index of the bonding glue 140 matches the refractive index of the transparent substrate 120 (i.e., transparent When the optical substrate 120 is a glass substrate, and the refractive indexes of the adhesive 140 and the glass substrate are both between 1.4 and 1.5), the image quality displayed by the display panel 110 can be prevented from being affected by the third microstructure 126.

Please refer to FIG. 3 again. FIG. 3 is a schematic side view illustrating the sensing display device 100C according to the third embodiment of the present disclosure. This embodiment At least one difference from the first embodiment is that the light-transmitting substrate 120 of this embodiment includes a microstructure. Specifically, the transparent substrate 120 of this embodiment may be a glass substrate, such as a diffused glass plate, and as shown in FIG. 3, the transparent substrate 120 includes a second body 122 and a second microstructure 124, wherein The two bodies 122 are disposed on the display panel 110.

The second microstructure 124 is connected to the second body 122 and is covered by the code point 132, and the second body 122 is located between the display panel 110 and the second microstructure 124, wherein the size of the second microstructure 124 is smaller than the second body 122 size of.

As described above, the second microstructure 124 can be formed by surface treatment, such as sandblasting or ion beam bombardment. In some embodiments, during the surface treatment, a portion of the transparent substrate 120 may be shielded, so that the second microstructure 124 is generated in the unshielded area of the transparent substrate 120.

Specifically, the roughness of the transparent substrate 120 in different regions will be different. For example, the second body 122 of the transparent substrate 120 and the bonding glue 140 form a first interface I1, and the first The two microstructures 124 and the code point 132 form a second interface I2, wherein the roughness of the first interface I1 is less than the roughness of the second interface I2, and the roughness (Ra) of the first interface I1 is approximately between Between 100 nm and 300 nm. In other words, for the upper surface of the transparent substrate 120, the area covered by the bonding glue 140 is relatively flat than the area covered by the code dots 132. For these relatively flat areas covered by the laminating adhesive 140, it can facilitate the display panel 110 to provide stable quality images.

In addition, the size of the second microstructure 124 may be slightly the same as the size of the first microstructure 136 of the first embodiment, that is, the height of the second microstructure 124 may be between 100 nm and 300 nm. Similarly, the first microstructure 136 of the code point 132 It may be formed by the second microstructure 124 of the light-transmitting substrate 120. The method of forming the first microstructure 136 of the code point 132 may be the same as the method described in the second embodiment, so it will not be repeated here.

Please refer to FIG. 4 again. FIG. 4 is a schematic side view illustrating the sensing display device 100D according to the fourth embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that the sensing display device 100D of this embodiment further includes a passivation layer 160, and the passivation layer 160 is located between the display panel 110 and the bonding glue 140, wherein the passivation layer The material of 160 may include inorganic materials, such as silicon oxide, silicon nitride, silicon oxynitride, other suitable materials, or combinations thereof.

Specifically, as shown in FIG. 4, the passivation layer 160 may cover the transparent substrate 120 and the position recognition layer 130 so that the position recognition layer 130 is located between the passivation layer 160 and the display panel 110. The passivation layer 160 can be used as a protective layer for the position recognition layer 130, thereby preventing the code point 132 from being deformed due to being pressed or preventing the code point 132 from being worn. In addition, the position recognition layer 130 can be separated from the bonding adhesive 140 by the passivation layer 160, wherein the bonding adhesive 140 is disposed on the passivation layer 160 and is located between the passivation layer 160 and the cover plate 150.

In addition, although the transparent substrate 120 of this embodiment is shown as the transparent substrate 120 of the first embodiment, the disclosure content is not limited thereto. For example, the transparent substrate 120 of this embodiment can also be replaced It is the transparent substrate 120 of the second embodiment or the transparent substrate 120 of the third embodiment.

Please refer to FIGS. 5A and 5B again. FIG. 5A is a schematic side view of the sensing display device 100E according to the fifth embodiment of the present disclosure, and FIG. 5B shows the code point 132 of FIG. 5A. The enlarged schematic. This implementation At least one difference between the method and the first embodiment is that the cross section of the first microstructure 136 of the code point 132 of the present embodiment is substantially tower-shaped.

Specifically, as shown in FIG. 5B, the first microstructure 136 of the code point 132 has a first portion 137, a second portion 138, and a third portion 139, wherein the first portion 137 is located on the first body 134 and the second Between the first part 137 and the third part 139.

For the tower-shaped first microstructure 136, the vertical projection P2 of the second portion 138 on the first body 134 will be located in the vertical projection P1 of the first portion 137 on the first body 134, and will be in contact with the first The boundary of the vertical projection P1 of the portion 137 on the first body 134 is separated by a distance. Similarly, the vertical projection P3 of the third portion 139 on the first body 134 will be located in the vertical projection P2 of the second portion 138 on the first body 134 and will be perpendicular to the second portion 138 on the first body 134 The boundaries of projection P2 are separated by a distance. In addition, each layer of the tower-shaped first microstructure 136 may have approximately the same height. For example, the height H3 of the first portion 137 and the height H4 of the second portion 138 The height H5 of the three parts 139 may be between 90 nm and 110 nm, respectively.

With the tower-shaped first microstructure 136, the light reflected by the code point 132 can have good directivity, so that the amount of light received by the operation object (such as the operation object 200 in FIG. 1D) increases, thereby improving the operation The contrast of the image received by the object further improves the accuracy of determining the touch position.

Please refer to FIG. 6A and FIG. 6B again. FIG. 6A is a schematic side view of the sensing display device 100F according to the sixth embodiment of the present disclosure, and FIG. 6B shows the code point 132 of FIG. 6A. The enlarged schematic. At least one difference between this embodiment and the first embodiment is that the code of this embodiment The first microstructure 136 of the point 132 is granular.

Specifically, as shown in FIG. 6B, the first microstructure 136 of the code point 132 is a granular structure, and the granular structure protrudes from the first body 134 away from the display panel 110, that is, it appears The granular first microstructure 136 protrudes upward from the sensing display device 100F. In this embodiment, although the first microstructure 136 of the code point 132 in FIGS. 6A and 6B is shown as a semicircle, in other embodiments, the first microstructure 136 of the code point 132 may be It is other shapes, such as a semi-ellipse or other shapes with curved surfaces. In addition, the height H6 of the first microstructure 136 of the code point 132 may be between 230 nm and 270 nm.

With the granular first microstructure 136, the reflection range of the code point 132 can be increased, so that the position recognition layer 130 can reflect more light rays with different incident angles, thereby expanding the operation object (for example, the operation object 200 in FIG. 1D) ) Angle of use. Here, the “use angle of the operation object” indicates that the position recognition layer 130 can reflect the light emitted by the operation object back to the operation object even when the operation object in a pen shape is more inclined to the sensing display device 100F. In other words, the granular first microstructure 136 can provide the user with a more flexible operation method.

Although the light-transmitting substrates 120 of the fifth and sixth embodiments are illustrated as having microstructures, the disclosure is not limited to this. In other embodiments, the fifth and sixth embodiments can also be used The light-transmitting substrate 120 of the embodiment is replaced with the light-transmitting substrate 120 described in other embodiments above, and the replaced light-transmitting substrate 120 has a microstructure with a corresponding shape, such as the tower shape of the fifth embodiment or the sixth embodiment. Granular. In addition, the microstructure of each embodiment The number is for illustration only, and it is not intended to limit the content of this disclosure. For example, the number of tower-shaped microstructures for each code point 132 in FIG. 5A can be changed from three to two, or for each code point 132 in FIG. 6A The number of granular microstructures can be changed from one to three.

In summary, the sensing display device of the present disclosure includes a display panel and a position recognition layer. The position recognition layer is set on the display panel and contains a plurality of code points, wherein the code points have microstructures, so that the surface of the code points can exhibit an undulating shape. Through the undulating shape of the code point, in addition to increasing the amount of reflection of the code point to the light, it can also enhance the chance of the code point reflecting the light back to its original emission position. When the operating object is used to emit invisible light to the sensing display device, the code point can reflect the invisible light to the invisible light receiver of the operating object, so that the operating object can form a black and white or grayscale image. In the case of increasing the amount of reflection of invisible light through the code point and increasing the chance of invisible light reflecting to the invisible light receiver, it can facilitate the analysis of the relative positional relationship between the operating object and the sensing display device, thereby increasing the judgment of the touch position Precision.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be deemed as defined by the scope of the attached patent application.

100A‧‧‧sensing display device

110‧‧‧Display panel

120‧‧‧Transparent substrate

130‧‧‧ Location recognition layer

132‧‧‧ code points

134‧‧‧ first body

136‧‧‧The first microstructure

140‧‧‧ Laminating adhesive

150‧‧‧cover

Claims (13)

A sensing display device includes: a display panel; a position recognition layer, which is arranged on the display panel and includes a plurality of code points, wherein each of the code points includes a first body and a first body connected to the first body At least one first microstructure, the first body is located between the display panel and the at least one first microstructure, and the size of the at least one first microstructure is smaller than the size of the first body; a bonding glue, Set on the position recognition layer; a cover plate is provided on the bonding glue; and a light-transmitting substrate is provided between the position recognition layer and the display panel, and the light-transmitting substrate includes: a second body, Disposed on the display panel; and at least one second microstructure connected to the second body and covered by one of the code points, wherein the size of the at least one second microstructure is smaller than the size of the second body. The sensing display device as described in item 1 of the patent application scope, wherein the material of the code points is metal. The sensing display device as described in item 1 of the patent application range, wherein the transparent substrate further comprises at least a third microstructure connected to the second body and covered by the bonding glue, wherein the at least a third microstructure Is smaller than the second body. The sensing display device as described in item 1 of the patent application range, wherein the second body and the bonding glue form a first interface, and one of the code points and the at least one second microstructure form a The second interface, and the roughness of the first interface is smaller than the roughness of the second interface. The sensing display device as described in item 4 of the patent application range, wherein the at least one first microstructure of the code point is conformal with the at least one second microstructure of the light-transmitting substrate. The sensing display device as described in item 1 of the patent application scope further includes: a passivation layer, the position recognition layer is between the passivation layer and the display panel, and the bonding glue is located between the passivation layer and the cover Between boards. The sensing display device as described in item 1 of the patent application range, wherein the at least one first microstructure has a first part and a second part, the first part being between the first body and the second part , And the vertical projection of the second part on the first body is located in the vertical projection of the first part on the first body. The sensing display device as described in item 1 of the patent application range, wherein the at least one first microstructure is a granular structure protruding from the first body in a direction away from the display panel. The sensing display device as described in item 1 of the patent application scope, wherein the projection shapes of the code points on the display panel are rod-shaped. The sensing display device as described in item 9 of the patent application range, wherein one of the code points has a length and a width, the length is greater than the width, and the width is between 10 μm and 20 μm. The sensing display device as described in item 1 of the patent application range, wherein the height of the at least one first microstructure is between 100 nm and 300 nm. The sensing display device as described in item 1 of the patent application range, wherein the refractive index of the bonding adhesive is between 1.4 and 1.6. A display module, comprising: the sensing display device as described in any one of patent application items 1 to 12; and an operation object, including an invisible light emitter and an invisible light receiver.

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