TWI718470B - Touch polarizer structure and touch display device using the same - Google Patents

Abstract

A touch polarizer structure includes a first substrate, a second substrate, a polarizer layer, and a touch-sensing layer. The polarizer layer is between the first and second substrate, in which the polarizer layer transmits lights having a first polarization direction and blocks lights having a second polarization direction. The first polarization direction is orthogonal to the second polarization direction. The touch-sensing layer is disposed on at least one of the first substrate, the second substrate, and the polarizer layer.

Description

Touch control polarized light structure and touch display device of its application

The present invention relates to a touch-control polarizing structure and a touch-control display device of its application.

With the development of touch panel technology in recent years, touch panels have been widely used in various electronic devices, such as mobile phones, laptop computers, and palmtop computers. The touch panel is generally integrated with the display panel into a touch display screen, which serves as an input and output interface of an electronic device to achieve a touch display function. Accordingly, the user can control the electronic device by touching the touch display screen with a finger or a touch object (such as a stylus pen) to correspondingly control the electronic device.

In order to enhance the convenience of use, the thin and light design of the touch display screen is becoming more and more important. However, since the touch display screen is usually manufactured separately after the touch panel and the display panel are assembled and bonded, this manufacturing method makes the touch liquid crystal display heavier, which is not conducive to the overall development of light and thin.

In many embodiments of the present invention, by disposing at least part of the touch sensing layer in the polarizing structure, the lightness and thinness of the touch display device can be realized 化. The touch sensing layer may have a single-layer structure and is disposed on a surface of the polarizing structure. Alternatively, the touch sensing layer may have a double-layer structure with a touch transmission layer and a touch receiving layer, and may be disposed on the two surfaces of the polarizing structure. Alternatively, the touch receiving layer of the touch sensing layer can be disposed on a surface of the polarizing structure, and the touch transmission layer can be configured in the liquid crystal module to match the touch receiving layer in the polarizing structure to detect touch Signal.

According to some embodiments of the present invention, the touch polarizing structure includes a first substrate, a second substrate, a polarizing layer, and a touch sensing layer. The polarizing layer is disposed between the first substrate and the second substrate, wherein the polarizing layer allows light having a first polarization direction to pass through and blocks light having a second polarization direction, and the first polarization direction is perpendicular to the second polarization direction. The touch sensing layer is disposed on at least one of the first substrate, the second substrate and the polarizing layer.

In some embodiments of the present invention, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the first substrate.

In some embodiments of the present invention, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the second substrate.

In some embodiments of the present invention, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the polarizing layer.

In some embodiments of the present invention, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes include silver nanowires.

In some embodiments of the present invention, the touch sensing layer includes a first touch sensing layer and a second touch sensing layer. The first touch sensing layer and the second touch sensing layer are disposed on any two of the two opposite surfaces of the first substrate, the two opposite surfaces of the second substrate, and the two opposite surfaces of the polarizing layer.

In some embodiments of the present invention, the touch sensing layer includes a first A touch sensing layer and a second touch sensing layer. The first touch sensing layer and the second touch sensing layer are disposed on two opposite surfaces of any one of the first substrate, the second substrate and the polarizing layer.

In some embodiments of the present invention, the touch polarizing structure further includes a release film, which is disposed on a side of the first substrate opposite to the polarizing layer.

In some embodiments of the present invention, the touch polarizing structure further includes a protective film, which is disposed on a side of the second substrate opposite to the polarizing layer.

According to some embodiments of the present invention, the touch display device includes an upper polarizing structure, a lower polarizing structure, a liquid crystal module, and a touch sensing layer. The upper polarizing structure includes a first substrate, a second substrate, and a polarizing layer, and the polarizing layer is disposed between the first substrate and the second substrate. The polarizing layer allows the light having the first polarization direction to pass through, and blocks the light having the second polarization direction, and the first polarization direction is perpendicular to the second polarization direction. The liquid crystal module is arranged between the upper polarizing structure and the lower polarizing structure. The touch sensing layer is at least disposed on the first substrate, the second substrate or the polarizing layer.

In some embodiments of the present invention, the touch sensing layer includes a first touch sensing layer and a second touch sensing layer. The first touch sensing layer is disposed on the first substrate, the second substrate or the polarizing layer. The second touch sensing layer is disposed in the active device array substrate.

In some embodiments of the present invention, the touch sensing layer includes a first touch sensing layer and a second touch sensing layer. The first touch sensing layer and the second touch sensing layer are disposed on any two of the two opposite surfaces of the first substrate, the two opposite surfaces of the second substrate, and the two opposite surfaces of the polarizing layer.

In some embodiments of the present invention, the touch display device further includes a transparent cover plate disposed on the side of the upper polarizing structure opposite to the liquid crystal module.

In some embodiments of the present invention, the touch display device further includes a backlight module, which is disposed on the side of the lower polarizing structure opposite to the liquid crystal module.

100‧‧‧Touch display device

110‧‧‧Backlight Module

120‧‧‧Down polarization structure

130‧‧‧LCD Module

132‧‧‧Active Device Array Substrate

132TS‧‧‧surface

132BS‧‧‧surface

134‧‧‧Relative substrate

134TS‧‧‧surface

134BS‧‧‧surface

136‧‧‧Liquid crystal layer

TE‧‧‧Touch electrode

TE1‧‧‧Touch electrode

TE2‧‧‧Touch electrode

TEL‧‧‧Wire

SS1‧‧‧Substrate

SA‧‧‧surface

SB‧‧‧surface

CD1‧‧‧Coating device

CD2‧‧‧Coating device

PR‧‧‧Photoresist

PL‧‧‧Photoresist layer

140: Polarized light structure

140’: Polarized light structure

142: first substrate

142TS: Surface

142BS: Surface

144: second substrate

144TS: Surface

144BS: Surface

146: Polarizing layer

146TS: Surface

146BS: Surface

147: Protective film

148: Pressure Sensitive Adhesive

149: Release film

150: frame

160: transparent cover

500: Exposure machine

510: light source

520: Mask

530: optical components

TL: Touch sensing layer

TL1: Touch transmission layer

TL2: Touch receiving layer

PL1: Part One

PL2: Part Two

CM: conductive material

CL: conductive layer

CL1: Partial

CL2: Partial

WL: routing

BA: junction area

CW: connecting wire

BL: Bridge wire

IB: Insulating block

DL: Developer

WS: Clear water

BK1: Baking machine

BK2: Baking machine

A1: Optical glue

A2: Optical glue

A3: Optical glue

OL: Organic layer

OL1: conductive part

OL2: Non-conductive part

NW: Nanowire

FIG. 1A is a schematic cross-sectional view of a touch display device according to some embodiments of the present invention.

FIG. 1B is a schematic diagram of a touch polarization structure according to some embodiments of the present invention.

2A to 2C are schematic diagrams of the manufacturing process of the touch polarizing structure according to some embodiments of the present invention.

3A and 3B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

4A and 4B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

5A and 5B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

6A and 6B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

7A and 7B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

8A and 8B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

9A and 9B are touch polarized light junctions according to some embodiments of the present invention A schematic cross-sectional view of the structure and its touch display device.

10A and 10B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

11A and 11B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

12A and 12B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

13A and 13B are cross-sectional schematic diagrams of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

14A and 14B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

15A and 15B are schematic cross-sectional views of a touch polarizing structure and a touch display device according to some embodiments of the present invention.

FIG. 16 is a schematic top view of a touch sensing layer according to some embodiments of the present invention.

FIG. 17 is a schematic top view of a touch sensing layer according to some embodiments of the present invention.

18A and 18B are schematic top views of a touch sensing layer according to some embodiments of the present invention.

19A and 19B are schematic top views of touch electrodes according to some embodiments of the present invention.

FIG. 20 is a comparison table of color measurement values of two touch display devices.

Hereinafter, multiple embodiments of the present invention will be disclosed in the form of drawings. For clear description, many practical details will be described 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 the drawings in a simple way.

FIG. 1A is a schematic cross-sectional view of a touch display device 100 according to some embodiments of the present invention. The touch display device 100 includes a backlight module 110, a lower polarizing structure 120, a liquid crystal module 130, an upper polarizing structure 140, and a back plate or frame 150. The liquid crystal module 130 is disposed between the upper polarizing structure 140 and the lower polarizing structure 120. The backlight module 110 is disposed on a side of the lower polarizing structure 120 opposite to the liquid crystal module 130 to provide light to the liquid crystal module 130. The frame 150 is used to carry the liquid crystal module 130 and the backlight module 110. The material of the frame 150 may be a material with better rigidity, such as metal or plastic.

FIG. 1B is a schematic diagram of a polarizing structure 140 according to some embodiments of the present invention. The upper polarizing structure 140 includes a first substrate 142, a second substrate 144 and a polarizing layer 146. The first substrate 142 and the second substrate 144 are spaced apart from each other. They sandwich the polarizing layer 146, which can provide protection for the polarized layer 146 and limit the shrinkage and deformation of the polarized layer 146 to ensure that the polarizing layer 146 can Maintain stable optical characteristics.

In some embodiments, the first substrate 142 and the second substrate 144 are flexible substrates, and the material thereof may be triacetate cellulose (TAC). However, in other embodiments, the first substrate 142 and the second substrate 144 may be made of other dielectric materials instead of using triacetate. The dimension is limited. The materials of the first substrate 142 and the second substrate 144 may be the same or different. In some embodiments, the polarizing layer 146 may be made of a polymer containing iodine molecules or a dye polymer, and is the main structure for controlling the polarization characteristics of the upper polarizing structure 140. For example, the material of the polarizing layer 146 is polyvinyl alcohol (PVA) or other suitable materials. In some embodiments, the polarizing layer 146 allows the light having the first polarization direction to pass through, and blocks the light having the second polarization direction, and the first polarization direction is perpendicular to the second polarization direction.

In some embodiments, the upper polarizing structure 140 includes at least a part of the touch sensing layer TL, which is also referred to as the touch polarizing structure 140 in the text. The touch sensing layer TL is at least disposed on the first substrate 142, the second substrate 144, and the polarizing layer 146. For example, here, the touch sensing layer TL is disposed on the second substrate 144. The touch sensing layer TL can be made of nano silver, metal grid, indium tin oxide, graphene, carbon nanotube, conductive polymer and other materials. The touch sensing layer TL has a plurality of touch electrodes, please wait for details of the configuration of the touch electrodes in subsequent FIGS. 16 to 18B.

In some embodiments, the upper polarizing structure 140 includes a pressure sensitive adhesive (PSA) 148, which is disposed on the side of the first substrate 142 opposite to the polarizing layer 146, and can be used to bond the liquid crystal module 130 (see FIG. 1A). ). Pressure-sensitive adhesive 148 is a type of adhesive that is sensitive to pressure, and its material may include appropriate rubber and appropriate resin.

1A and 1B, in some embodiments, before the upper polarizing structure 140 is pasted to the liquid crystal module 130, the lower surface of the upper polarizing structure 140 is further provided with a release film 149, and the upper surface of the upper polarizing structure 140 A protective film 147 is also provided. In the process of attaching the upper polarizing structure 140 to the liquid crystal module 130 In this case, the release film 149 can be removed, so that the pressure-sensitive adhesive 148 is exposed to contact the liquid crystal module 130. The protective film 147 can protect the upper polarizing structure 140 from scratches during the manufacturing process, and the protective film 147 can be removed at an appropriate time to prevent it from reducing the transmittance of the polarizing structure 140. Here, for ease of description, the combination of the polarizing structure 140, the release film 149, and the protective film 147 is collectively referred to as the polarizing structure 140', but it should be understood that the polarizing structure does not require the release film 149 and the protective film 147. structure.

Returning to FIG. 1A, according to the operating mechanism of the touch display device 100, the lower polarizing structure 120 can be combined with the upper polarizing structure 140 to allow light with a specific polarization direction to pass through and block light with another polarization direction. For example, the penetration axis of the lower polarizing structure 120 and the penetration axis of the upper polarizing structure 140 may be orthogonal to each other. For example, the lower polarizing structure 120 may allow the light having the second polarization direction to pass through, and block the light having the first polarization. Direction of light. Alternatively, in some embodiments, the transmission axis of the lower polarizing structure 120 and the transmission axis of the upper polarizing structure 140 may be parallel to each other. For example, the lower polarizing structure 120 may allow light with the first polarization direction to pass through and block Light in the second polarization direction.

The manufacturing method of the touch sensing layer TL in the touch polarizing structure 140 is first described below.

2A to 2C are schematic diagrams of the manufacturing process of the touch polarizing structure 140 according to some embodiments of the present invention. Refer to FIG. 1B and FIGS. 2A to 2C at the same time. In FIGS. 2A to 2C, only the embodiment in which the touch sensing layer TL is disposed on the flexible substrate is described. Those with ordinary knowledge in this technical field should understand that in other embodiments, the touch sensing layer TL can also be disposed on a hard substrate by other methods, and is not limited to a flexible substrate.

2A, a roll of substrate SS1 is provided, and the substrate SS1 is rolled Pass it through the coating device CD1, CD2. The coating device CD1 is equipped with a conductive material CM, and the coating device CD2 is equipped with a photoresist material PR. After the conductive material CM is coated on the substrate SS1 through the coating device CD1, the conductive material CM can be selectively baked to form the conductive layer CL. Thereafter, the photoresist material PR is coated on the conductive layer CL through the coating device CD2, and the photoresist material PR includes an organic photosensitive material and a suitable solvent. Then, the baking machine BK1 performs one or more baking to remove the solvent in the photoresist material PR to shape the photoresist material PR to form the photoresist layer PL, and finally wind it into a roll.

In this embodiment, the coating device CD1 and the coating device CD2 can adopt various wet coating methods to provide the conductive layer CL and the photoresist layer PL, such as Comma Coating or Roll Coating. ) Or Extrusion Coating. In other embodiments, the conductive layer CL may be provided by dry coating, such as chemical vapor deposition.

Here, the conductive material CM can be formed by mixing nanowires with appropriate organic materials, where the nanowires can be silver nanowires, etc., and the conductive layer CL is a polymer/nanowire composite material. Alternatively, in other embodiments, the conductive material CM or the conductive layer CL may be a material layer with higher conductivity, such as a metal layer or a transparent metal oxide layer, such as silver, copper, indium tin oxide, and the like. The conductive material CM or the conductive layer CL can be disposed on the substrate SS1 in other ways, and is not limited to the wet coating depicted in the figure. For example, the conductive material CM or the conductive layer CL (such as a metal layer or a transparent metal oxide layer) can be disposed on the substrate SS1 by a dry coating method (such as a deposition method).

In this embodiment, the substrate SS1 can be a single substrate, for example For example, a single first substrate 142, a single second substrate 144, or a single polarizing layer 146 (refer to FIG. 1B). Alternatively, in some embodiments, the substrate SS1 may be a composite substrate, such as a structure in which the polarizing layer 146 is sandwiched between the first and second substrates 142 and 144 (refer to FIG. 1B). When the substrate SS1 is a flexible substrate, the first substrate 142, the second substrate 144, and/or the polarizing layer 146 (refer to FIG. 1B) are flexible substrates. In other embodiments, when the substrate SS1 is a hard substrate, the first substrate 142, the second substrate 144, and/or the polarizing layer 146 (refer to FIG. 1B) may be a hard substrate.

2B, an exposure machine 500 is used to perform an exposure step on the photoresist layer PL on the substrate SS1. Here, the exposure machine 500 includes a light source 510, a mask 520, and appropriate optical elements 530. The light source 510 can emit appropriate light to make the photoresist layer PL react. Specifically, the light wavelength of the light source 510 is matched with the photoresist layer PL, for example, the light source 510 is an ultraviolet light source. The mask 520 is used to provide an appropriate pattern of light from the light source 510. The optical element 530 is used to adjust light, for example, to absorb light to reduce the intensity of reflected light, or, for example, a lens to concentrate light to a specific area, and the position of the optical element 530 is not limited in the figure. Thereby, the first part PL1 of the photoresist layer PL is exposed to light and reacts, while the second part PL2 of the photoresist layer PL is not exposed to light and remains substantially unchanged.

2C, the photoresist layer PL is developed with a developing solution DL. In this embodiment, the photoresist layer PL may be composed of a positive photoresist, and the first part PL1 of the photoresist layer PL (refer to FIG. 2B) will be dissolved by the developer DL through chemical development, and the photoresist layer PL The second part of PL2 will not be dissolved by the developer DL. However, the developer DL may pass through the second portion PL2 of the photoresist layer PL through a diffusion method, and decompose the portion CL2 of the conductive layer CL through physical development. For example, the conductive layer The nanowire in the part CL2 of the CL may be decomposed and leave the part CL2 of the conductive layer CL, thereby reducing the conductivity of the part CL2 of the conductive layer CL. The nanowires in the part CL1 of the conductive layer CL are still kept inside, and still have proper conductivity and can be used as a conductor. Thereby, the part CL1 of the conductive layer CL can form the touch electrode of the touch sensing layer TL, and the part CL2 of the conductive layer CL can serve as an insulator to isolate two adjacent touch electrodes.

Then, a cleaning step is performed with clear water WS (for example, De-ionized water) to remove the developer DL. After that, the baking machine BK2 performs one or more baking to remove the clear water WS, and finally winds it into a roll.

By the above method, the touch electrodes of the touch sensing layer TL can be formed on the substrate SS1. Thereafter, the polarizing structure 140' of each embodiment of the present invention can be formed selectively through an appropriate bonding method.

Refer to FIG. 1B and FIGS. 2A to 2C at the same time. In detail, in some embodiments, when the substrate SS1 is the first substrate 142 or the second substrate 144, the first substrate 142 or the second substrate 144 with the touch sensing layer TL (for example, the conductive layer CL) It is attached to the polarizing layer 146, and then the protective film 147 is attached to the side of the second substrate 144 opposite to the polarizing layer 146. Then, the pressure sensitive adhesive 148 is coated on the release film 149, and the release film 149 is attached to the side of the first substrate 142 opposite to the polarizing layer 146 with the side where the pressure sensitive adhesive 148 is provided. In this way, the polarization structure 140' can be obtained.

Alternatively, in some embodiments, when the substrate SS1 is the polarizing layer 146, the polarizing layer 146 having the touch sensing layer TL (for example, the conductive layer CL) is first bonded to the first substrate 142 and the second substrate 144. Afterwards, the protective film 147 is attached to the side of the second substrate 144 opposite to the polarizing layer 146. Then, apply pressure sensitive adhesive 148 is on the release film 149, and the release film 149 is attached to the side of the first substrate 142 opposite to the polarizing layer 146 with the side provided with the pressure sensitive adhesive 148. In this way, the polarization structure 140' can be obtained. In other embodiments, the touch sensing layer TL can be disposed on the substrate SS1 by other methods, which is not limited to this embodiment.

In some embodiments of the present invention, the touch sensing layer TL may be a single-layer or double-layer touch structure. For the detailed configuration of the single-layer touch sensing layer TL, refer to FIGS. 16 and 17, and for the detailed configuration of the double-layer touch sensing layer TL, refer to FIGS. 18A and 18B, which will not be repeated here. The following FIGS. 3A to 8B take the single-layer touch sensing layer TL as an example, and FIGS. 9A to 15B take the double-layer touch sensing layer TL as an example to illustrate various embodiments of the present invention.

3A and 3B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch sensing layer TL of the touch polarizing structure 140 is a single-layer touch structure, and is disposed on the side of the second substrate 144 of the touch polarizing structure 140 opposite to the polarizing layer 146, for example, on the second substrate The upper surface of the 144 is 144TS.

In this embodiment, in FIG. 1B, the touch display device 100 includes a transparent cover 160 and an optical glue A3. The transparent cover 160 is disposed on the side of the polarizing structure 140 opposite to the liquid crystal module 130 through the optical glue A3 to protect the touch sensing layer TL of the polarizing structure 140. In this embodiment, the optical adhesive A3 adheres the touch control sensing layer TL and the transparent cover 160. The manufacturing method of the touch display device 100 may be as follows: after the release film 149 in the polarizing structure 140' of FIG. 3A is removed, it is attached to the upper surface of the liquid crystal module 130. Next, after removing the protective film 147 in the polarizing structure 140' of FIG. 3A, the transparent cover 160 is pasted on the touch sensing layer TL through the optical glue A3.

Here, in the polarizing structure 140', optical glues A1 and A2 may be further provided for bonding the polarizing layer 146 to the first substrate 142 and the second substrate 144 in the aforementioned manufacturing process. In each embodiment, the optical adhesives A1, A2, and A3 refer to appropriate adhesives with high transmittance. For example, the transmittance of the optical adhesives A1, A2, and A3 is greater than 60%, or even greater than 80%. The other details of this embodiment are roughly as described above, and will not be repeated here.

4A and 4B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the previous embodiment, the difference is: in this embodiment, the single-layer touch sensing layer TL of the touch polarizing structure 140 is disposed on the side of the second substrate 144 of the touch polarizing structure 140 facing the polarizing layer 146 , For example, located on the lower surface 144BS of the second substrate 144. In this embodiment, the optical adhesive A2 adheres the contact control sensing layer TL and the polarizing layer 146. In this embodiment, the touch sensing layer TL is protected by the second substrate 144 to avoid external force damage, and the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here.

5A and 5B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the previous embodiments, but the difference is: in this embodiment, the single-layer touch sensing layer TL of the touch polarizing structure 140 is disposed on the side of the first substrate 142 of the touch polarizing structure 140 opposite to the polarizing layer 146 , For example, located on the lower surface 142BS of the first substrate 142. In this embodiment, the pressure sensitive adhesive 148 adheres the touch control sensing layer TL and the liquid crystal module 130. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. This embodiment The other details are roughly as mentioned above, so I won’t repeat them here.

6A and 6B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the previous embodiment, the difference is: in this embodiment, the single-layer touch sensing layer TL of the touch polarizing structure 140 is disposed on the side of the first substrate 142 of the touch polarizing structure 140 facing the polarizing layer 146 , For example, located on the upper surface 142TS of the first substrate 142. In this embodiment, the optical adhesive A1 adheres the contact control sensing layer TL and the polarizing layer 146. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here.

7A and 7B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the previous embodiment, but the difference is: in this embodiment, the single-layer touch sensing layer TL of the touch polarizing structure 140 is disposed on the side of the polarizing layer 146 of the touch polarizing structure 140 facing the first substrate 142 , For example, located on the upper surface 146TS of the polarizing layer 146. In this embodiment, the optical adhesive A2 adheres the contact control sensing layer TL and the second substrate 144. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here.

8A and 8B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the previous embodiments, but the difference is: in this embodiment, the single-layer touch sensing layer TL of the touch polarizing structure 140 is disposed on the side of the polarizing layer 146 of the touch polarizing structure 140 facing the second substrate 144 , For example, located under the polarizing layer 146 Surface 146BS. In this embodiment, the optical adhesive A1 adheres the contact control sensing layer TL and the first substrate 142. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here.

9A and 9B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch sensing layer TL of the touch polarizing structure 140 is a double-layer touch structure. The touch sensing layer TL includes a touch transmission layer TL1 and a touch receiving layer TL2, which are respectively disposed in the touch polarizing structure Two opposite surfaces 144BS and 144TS of the second substrate 144 of 140. In this embodiment, the optical adhesive A2 adheres to the contact control transmission layer TL1 and the polarizing layer 146, and the optical adhesive A3 adheres the contact control receiving layer TL2 and the transparent cover 160. The other details of this embodiment are roughly as described above, and will not be repeated here.

10A and 10B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch transmission layer TL1 and the touch receiving layer TL2 of the touch sensing layer TL are respectively disposed on two opposite surfaces 142BS and 144TS of the first substrate 142 of the touch polarization structure 140. In this embodiment, the pressure-sensitive adhesive 148 adheres the contact control transmission layer TL1 and the liquid crystal module 130, and the optical adhesive A1 adheres the contact control receiving layer TL2 and the polarizing layer 146. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here.

11A and 11B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch polarizing structure 140 includes the touch transmission layer of the touch sensing layer TL TL1 and touch receiving layer TL2. The touch transmission layer TL1 is disposed on the surface 142BS of the first substrate 142 of the touch polarizing structure 140 opposite to the polarizing layer 146, and the touch receiving layer TL2 is disposed on the surface 144TS of the second substrate 144 of the touch polarizing structure 140 opposite to the polarizing layer 146. In this embodiment, the pressure sensitive adhesive 148 adheres the contact control transmission layer TL1 and the liquid crystal module 130, and the optical adhesive A3 adheres the contact control receiving layer TL2 and the transparent cover 160. The other details of this embodiment are roughly as described above, and will not be repeated here.

12A and 12B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch polarizing structure 140 includes a touch transmission layer TL1 and a touch receiving layer TL2 of the touch sensing layer TL. The touch transmission layer TL1 is disposed on the surface 142TS of the first substrate 142 of the touch polarizing structure 140 facing the polarizing layer 146, and the touch receiving layer TL2 is disposed on the surface 144TS of the second substrate 144 of the touch polarizing structure 140 opposite to the polarizing layer 146. In this embodiment, the optical adhesive A1 adheres to the contact control transmission layer TL1 and the polarizing layer 146, and the optical adhesive A3 adheres the contact control receiving layer TL2 and the transparent cover 160. The other details of this embodiment are roughly as described above, and will not be repeated here.

13A and 13B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch polarizing structure 140 includes a touch transmission layer TL1 and a touch receiving layer TL2 of the touch sensing layer TL. The touch transmission layer TL1 and the touch receiving layer TL2 are respectively disposed on two opposite surfaces 146BS and 146TS of the polarizing layer 146. In this embodiment, the optical adhesive A1 adheres the contact control transmission layer TL1 and the first substrate 142, and the optical adhesive A2 adheres the contact control receiving layer TL2 and the second substrate 144. In some other embodiments, the configuration of the transparent cover 160 and the optical glue A3 can be omitted to achieve a light and thin effect. The other details of this embodiment are roughly as described above, and will not be repeated here. Words.

14A and 14B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. In this embodiment, the touch polarizing structure 140 includes the touch receiving layer TL2 of the touch sensing layer TL, but does not include the touch transmission layer TL1. The touch receiving layer TL2 is disposed on the surface 144TS of the second substrate 144 opposite to the polarizing layer 146.

In some embodiments, the liquid crystal module 130 includes an active device array substrate 132, an opposite substrate 134, and a liquid crystal layer 136 sandwiched therebetween. The touch transmission layer TL1 can be embedded in the liquid crystal module 130, for example, in an in-cell or on-cell configuration. Specifically, in this embodiment, the touch transmission layer TL1 can be disposed on the upper surface 134TS or the lower surface 134BS of the opposite substrate 134 of the liquid crystal module 130. That is, in some embodiments, the touch transmission layer TL1 may be disposed between the opposite substrate 134 and the liquid crystal layer 136 of the liquid crystal module 130. In this embodiment, the optical glue A3 adheres the touch receiving layer TL2 and the transparent cover 160, and the transparent cover 160 can protect the touch receiving layer TL2 from scratches.

Here, the active device array substrate 132 includes a transparent substrate and data lines, scan lines, active devices, pixel electrodes, etc. disposed on the transparent substrate. The transparent substrate can be a rigid substrate or a flexible substrate, such as glass, strengthened glass, polycarbonate (PC), polyethylene terephthalate (PET), or other cyclic olefin copolymers (cyclic olefin copolymer) and so on. The active device may be, for example, a thin film transistor, which may have a source, a drain, and a gate. The gate of the active device is connected to the scan line, the source of the active device is connected to the data line, and the drain of the active device is connected to the pixel electrode. In this way, the active component can be turned on by controlling the signal of the scan line, and The display signal is transmitted to the pixel electrode, and then the liquid crystal layer 136 is controlled.

In some embodiments, the counter substrate 134 may be a color filter substrate, and a plurality of color filter units on the transparent substrate respectively correspond to the pixel electrodes of the active device array substrate 132 to provide various colors of the pixels. Alternatively, in other embodiments, the opposite substrate 134 may not have a color filter unit. In some embodiments, the color filter unit can be directly disposed on the active device array substrate 132. The other details of this embodiment are roughly as described above, and will not be repeated here.

15A and 15B are schematic cross-sectional views of the touch polarizing structure 140' and the touch display device 100 according to some embodiments of the present invention. This embodiment is similar to the embodiments of FIGS. 14A and 14B, except that: in this embodiment, the touch receiving layer TL2 is disposed on the upper surface 132TS or the lower surface 132BS of the active device array substrate 132 of the liquid crystal module 130. That is, in some embodiments, the touch transmission layer TL1 may be disposed between the active device array substrate 132 and the liquid crystal layer 136 of the liquid crystal module 130. The touch transmission layer TL1 can be fabricated together with thin film transistors, scan lines, data lines, etc. on the active device array substrate 132. The other details of this embodiment are roughly as described above, and will not be repeated here.

FIG. 16 is a schematic top view of a touch sensing layer TL according to some embodiments of the present invention. The touch sensing layer TL of this embodiment includes a single layer of touch electrodes. Specifically, the touch sensing layer TL includes a plurality of touch electrodes TE and wires WL. The touch electrode TE is disposed on the surface SA (such as the aforementioned surface 142TS, 142BS, 144TS, 144BS, 146TS or 146BS) of the substrate SS1 (such as the aforementioned first substrate 142, the second substrate 144 or the polarizing layer 146). The traces WL respectively connect the touch electrodes TE to the bonding area BA. The trace WL may include a suitable conductive material, such as copper. After the aforementioned roll-to-roll process, the bonding area BA can be Connect a flexible circuit board (not shown). The flexible circuit board can be provided with a processing chip (not shown) to process touch signals.

FIG. 17 is a schematic top view of a touch sensing layer TL according to some embodiments of the present invention. The difference between this embodiment and the embodiment in FIG. 16 is that this embodiment includes two axial touch electrodes TE1 and TE2. Specifically, the touch sensing layer TL includes a plurality of touch electrodes TE1 and TE2. As shown in the figure, the touch electrodes TE1 are arranged in a first axial direction, and the touch electrodes TE2 are arranged in a second axial direction. The touch electrodes TE1 and TE2 are arranged on the substrate SS1 (for example, the aforementioned The same surface SA of the first substrate 142, the second substrate 144 or the polarizing layer 146 (for example the aforementioned surface 142TS, 142BS, 144TS, 144BS, 146TS or 146BS).

In this embodiment, the touch sensing layer TL further includes a connecting wire CW, a bridging wire BL, and an insulating block IB. The connecting wire CW and the touch electrodes TE1 and TE2 can be formed by the same layer. The connecting wire CW connects the adjacent touch electrode TE2. The bridge wire BL is connected to the adjacent touch electrode TE1. The bridging wire BL may be formed of transparent or opaque conductive materials, such as silver, copper, indium tin oxide, and the like. The insulating block IB is arranged between the connecting wire CW and the bridge wire BL and separates the connecting wire CW from the bridge wire BL, so as to electrically isolate the touch electrodes TE1 and TE2.

18A and 18B are schematic top views of the touch sensing layer TL according to some embodiments of the present invention. The difference between this embodiment and the embodiment in FIG. 16 is that in this embodiment, the touch sensing layer TL is a double-layer type, which includes a touch transmission layer TL1 and a touch receiving layer TL2, which are respectively disposed on the surface SA and the surface SB. Specifically, the touch transmission layer TL1 includes touch electrodes TE1, and the touch receiving layer TL2 includes touch electrodes TE2. Touch electrode TE1 and touch electrode TE2 The conductive lines connected to the peripheral area are respectively connected, and the touch signals are transmitted to the controller for calculation through the conductive lines in the peripheral area, so as to determine the coordinates of the touched position. Here, the surfaces SA and SB on which the touch electrodes TE1 and TE2 are provided may belong to the same substrate (for example, the aforementioned first substrate 142, second substrate 144, or polarizing layer 146) or different substrates (for example, the aforementioned first substrate). 142, any two of the second substrate 144 and the polarizing layer 146). For example, the surfaces SA and SB can be any two of the aforementioned surfaces 142TS, 142BS, 144TS, 144BS, 146TS or 146BS.

The aforementioned touch electrodes TE, TE1, and TE2 can be polymer/nanowire (or other conductive particles) composite materials. In other embodiments, the touch electrodes TE, TE1, and TE2 can be made of a transparent conductive material, and the transparent conductive material can be selected from one or a combination of the following groups: indium tin oxide (ITO), antimony tin oxide (ATO), zinc oxide (ZnO), zinc dioxide (ZnO ₂ ), tin dioxide (SnO ₂ ), indium trioxide (In ₂ O ₃ ). Alternatively, the aforementioned touch electrodes TE1 and TE2 can be metal meshes, and the material can be metal, such as silver and copper. In other embodiments, the aforementioned touch electrodes TE1 and TE2 may include graphene, carbon nanotubes, and the like.

FIG. 19A is a top view of touch electrodes TE (such as the aforementioned touch electrodes TE1 and TE2) according to some embodiments of the present invention. In this embodiment, the touch electrode TE includes a conductive grid, which is composed of a plurality of wires TEL. The wire TEL may be composed of a highly conductive material, which may be light-transmissive or opaque. For example, the wire TEL is formed of metal, such as copper. Alternatively, in other embodiments, the wire TEL is formed of a conductive oxide, such as indium tin oxide. The wire TEL can also form the aforementioned connecting wire CW and routing WL. Other details of this embodiment The section is roughly as mentioned before, so I won’t repeat it here.

FIG. 19B is a top view of touch electrodes TE (such as the aforementioned touch electrodes TE1 and TE2) according to some embodiments of the present invention. In this embodiment, the touch electrode TE includes a nanowire NW and is disposed in the organic layer OL. Specifically, the organic layer OL may be disposed on the aforementioned substrate SS1, and it has a conductive portion OL1 and a non-conductive portion OL2. The nanowire NW has a higher concentration in the conductive part OL1. The nanowire NW crisscrosses and overlaps each other to form a highly conductive network. In contrast, the nanowire NW has a lower concentration in the conductive part OL1, while the non-conductive part OL2 is substantially insulated. Thereby, the touch electrode TE can be formed. In addition, the nanowire NW has a relatively high aspect ratio, and the structure of the network is relatively sparse, so that it can produce extremely high light transmission effect, high conductivity and high transmittance. The conductive part OL1 (including the nanowire NW) can also form the aforementioned connecting line CW and wiring WL. The other details of this embodiment are roughly as described above, and will not be repeated here.

FIG. 20 is a comparison table of performance parameters of various touch display devices. In this figure, the comparative example is a touch display device in which a touch panel and a display panel are manufactured separately and then assembled and bonded. Sample 1 and sample 2 of the embodiment adopt the structure of FIG. 3B described above. In the performance items of chromaticity, brightness, and brightness uniformity, the touch display device of the embodiment of this case has little difference compared with the comparative example. It can be seen from this figure that the touch display device of the embodiment of the present application can achieve a good display effect, which meets the needs of users.

In many embodiments of the present invention, by disposing at least part of the touch sensing layer in the polarizing structure, the touch display device can be made lighter and thinner. The touch sensing layer may have a single-layer structure and is disposed on a surface of the polarizing structure. Alternatively, the touch sensing layer may have a double-layer structure with a touch transmission layer and a touch receiving layer, and may be disposed on the two surfaces of the polarizing structure. Alternatively, the touch receiving layer of the touch sensing layer can be disposed on a surface of the polarizing structure, and the touch transmission layer can be configured in the liquid crystal module to match the touch receiving layer in the polarizing structure to detect touch Signal.

In some embodiments of the present invention, although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Anyone familiar with the art can make various kinds of work without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of the attached patent application.

100‧‧‧Touch display device

110‧‧‧Backlight Module

120‧‧‧Down polarization structure

130‧‧‧LCD Module

140‧‧‧Polarized light structure

142‧‧‧First substrate

144‧‧‧Second substrate

144TS‧‧‧surface

146‧‧‧Polarizing layer

148‧‧‧Pressure Sensitive Adhesive

160‧‧‧Transparent cover

TL‧‧‧Touch sensor layer

A1‧‧‧Optical Adhesive

A2‧‧‧Optical Adhesive

A3‧‧‧Optical Adhesive

Claims (13)

A touch polarizing structure includes: a first substrate; a second substrate; a polarizing layer disposed between the first substrate and the second substrate, wherein the polarizing layer allows light having a first polarization direction to pass through Transparent and blocking light having a second polarization direction, the first polarization direction being perpendicular to the second polarization direction; and a touch sensing layer, at least disposed on the two surfaces of the second substrate and the polarizing layer facing the second One of the surfaces of the substrate; and a release film disposed on a side of the first substrate opposite to the polarizing layer. According to the touch polarizing structure described in claim 1, wherein the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the first substrate. According to the touch polarization structure described in the first item of the patent application, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the second substrate. According to the touch polarizing structure described in the first item of the patent application, the touch sensing layer includes a plurality of touch electrodes, and the touch electrodes directly contact the polarizing layer. Such as the touch polarized light structure described in item 1 of the scope of patent application, The touch sensing layer includes a plurality of touch electrodes, and the touch electrodes include silver nanowires. According to the touch polarization structure described in the first item of the patent application, the touch sensing layer includes: a touch transmission layer; and a touch receiving layer located above the touch transmission layer, wherein the touch receiving layer The layer is disposed on the one of the two surfaces of the second substrate and the surface of the polarizing layer. According to the touch polarization structure described in the first item of the patent application, the touch sensing layer includes: a touch transmission layer; and a touch receiving layer located above the touch transmission layer, wherein the touch transmission layer The layer and the touch receiving layer are disposed on two opposite surfaces of any one of the first substrate, the second substrate, and the polarizing layer. The touch polarizing structure described in the first item of the scope of patent application further includes: a protective film disposed on a side of the second substrate opposite to the polarizing layer. A touch display device includes: an upper polarizing structure, including: a first substrate; a second substrate; and A polarizing layer is disposed between the first substrate and the second substrate, wherein the polarizing layer allows light having a first polarization direction to pass through, and blocks light having a second polarization direction, the first polarization direction Perpendicular to the second polarization direction; a lower polarizing structure; a liquid crystal module, disposed between the upper polarizing structure and the lower polarizing structure, including an upper substrate, a lower substrate, and a liquid crystal layer, the liquid crystal layer being disposed on the upper Between the substrate and the lower substrate; and a touch sensing layer disposed on at least one of the two surfaces of the second substrate and the polarizing layer facing one of the surfaces of the second substrate, wherein the first substrate is located on the second substrate Between the substrate and the liquid crystal module. The touch display device according to claim 9, wherein the touch sensing layer includes: a touch receiving layer disposed on the two surfaces of the second substrate and the one of the surface of the polarizing layer; And a touch transmission layer is arranged in the liquid crystal module. The touch display device according to claim 9, wherein the touch sensing layer includes: a touch transmission layer; and a touch receiving layer disposed above the touch transmission layer, wherein the touch The receiving layer is disposed on the one of the two surfaces of the second substrate and the surface of the polarizing layer. The touch display device described in item 9 of the scope of patent application further includes: a transparent cover plate disposed on the side of the upper polarizing structure opposite to the liquid crystal module. The touch display device described in item 9 of the scope of patent application further includes: a backlight module disposed on the side of the lower polarizing structure opposite to the liquid crystal module.

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