CN105892743B - Polaroid with touch-control and pressure sensitive function and touch control display apparatus - Google Patents
Polaroid with touch-control and pressure sensitive function and touch control display apparatus Download PDFInfo
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- CN105892743B CN105892743B CN201610093915.0A CN201610093915A CN105892743B CN 105892743 B CN105892743 B CN 105892743B CN 201610093915 A CN201610093915 A CN 201610093915A CN 105892743 B CN105892743 B CN 105892743B
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 17
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
Abstract
The invention discloses a kind of polaroids and touch control display apparatus with touch-control and pressure sensitive function, the polaroid with touch-control and pressure sensitive function, including：Polarizing layer and the first protective layer on polarizing layer and the second protective layer under polarizing layer, which is characterized in that further include：Transparent touch circuit layer, the touch control operation for incuding user；Pressure sensitive layer, the pressure conversion for generating the touch control operation of user is at corresponding electric signal output；Wherein, transparent touch circuit layer is mutually not in contact with each other with pressure sensitive layer.The polaroid with touch-control and pressure sensitive function of the present invention can either simplify manufacture craft, reduce cost, touch-control and pressure sensitive function can be had both on the basis of not increasing touch control display apparatus thickness again, it can be widely applied to the electronic products such as mobile phone, tablet computer or wrist-watch touch screen and industrial equipment action pane touch screen.
Description
Technical Field
The invention relates to the field of liquid crystal display, in particular to a polarizer with touch and pressure induction functions and a touch display device.
Background
The polarizer, which polarizes light passing through the dichroic medium of the polarizing film, is an important component affecting the luminous efficiency of a Liquid Crystal Display (Liquid Crystal Display). When polarized light penetrates through the polarizer, if the vibration direction of the polarized light is parallel to and consistent with the transmission direction of the polarizer, the polarized light is hardly blocked, and the polarizer is transparent; if the direction of vibration of the polarized light is perpendicular to the transmission direction of the polarizer, the polarized light hardly passes through the polarizer at all, and the polarizer becomes opaque.
At present, a polarizer commonly used in a Liquid Crystal Display (Liquid Crystal Display) mostly uses polyvinyl alcohol (PVA) as a substrate, and forms a polarizer original film through processes such as dyeing, stretching, dehydration, drying and the like. Because the PVA film has extremely strong hydrophilicity, the two sides of the original polarizer film are respectively compounded with a layer of cellulose Triacetate (TAC) film for protection to form the original polarizer plate. An outer protective film is usually adhered to both outer surfaces of the polarizer, and a Pressure Sensitive Adhesive (PSA) with a certain thickness is coated on one side of the original polarizer plate according to different use requirements of the liquid crystal flat panel display.
Besides using a polarizer, the touch screen of the liquid crystal flat panel display also needs a conductive layer to realize touch reaction. Currently, Indium Tin Oxide (ITO) is used as a conductive material in a conductive layer of a touch screen of a liquid crystal flat panel display in the market. The technology of directly forming an ITO conductive film and a sensor on a cover glass is widely used in the fields of liquid crystal displays, touch panels, solar thin film batteries, organic EL elements for illumination, and the like. However, the ITO conductive film has many defects in the using process: 1) the main component of indium is expensive and toxic, and the indium is poisoned by long-term inhalation of human bodies; 2) the deposition process must be in a vacuum environment, and expensive vacuum deposition equipment is required, and the maintenance cost is high; 3) during the deposition process, only less than 30% of ITO target material is sputtered onto the substrate, and the rest of the ITO target material is sputtered onto the chamber wall, so that the raw material is greatly wasted; 4) the resistivity of the ITO is relatively high, the resistance is continuously increased along with the increase of the size of the touch screen, the brightness of the touch screen and the response performance of a sensor are influenced, and the area of the wiring part of the frame is increased along with the increase of the number of the electrodes; 5) the ITO is brittle, the processing difficulty is increased after the size of the ITO is increased, and the ITO is not easy to bend due to lack of flexibility and is not suitable for being applied to a flexible touch screen.
In addition, with the release of Force Touch technology by Apple corporation, the pressure sensing Touch screen has become a market hotspot. Most of pressure sensing touch screens in the current market are additionally provided with independent pressure sensors, once finger touch is detected, the pressure sensors can present the whole touch process to a processing chip, and the processing chip can judge whether the touch process is a light touch or a heavy pressure and call different corresponding functions. However, the method of adding an independent pressure sensor inevitably increases the thickness of the touch screen itself, which is also the main reason why the new product thickness of Apple company suddenly increases, and is contrary to the development trend of thinning and lightening electronic products at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a polaroid with touch and pressure sensing functions and a touch display device, which are used for solving the problems that the thickness of a touch screen is increased, the manufacturing cost of the process is high and the like in the prior art.
According to an aspect of the present invention, the present invention provides a polarizer with touch and pressure sensing functions, comprising: polarisation layer and be located the first protective layer on the polarisation layer and be located the second protective layer under the polarisation layer, its characterized in that still includes: the transparent touch circuit layer is used for sensing touch operation of a user; the pressure sensing layer is used for converting pressure generated by touch operation of a user into a corresponding electric signal to be output; the transparent touch circuit layer is not in contact with the pressure induction layer.
According to another aspect of the present invention, the invention further provides a touch display device, including the polarizer with touch and pressure sensing functions.
According to the polaroid with the touch and pressure induction functions and the touch display device, the AZO transparent touch circuit layer and the ZnO pressure induction layer are added in the polaroid, so that the thickness of the touch display device is reduced, the manufacturing process of the touch display device is simplified, and the manufacturing cost of a touch screen is reduced. Compared with an ITO material, the AZO material has the advantages of simple preparation process, low cost, good material stability, no toxicity and environmental protection, and the touch circuit made of the AZO material is used as the transparent touch circuit layer by utilizing the advantages of the AZO material, so that the transparent touch circuit layer is simple in preparation process and low in cost, and is good in stability, non-toxic and environmental-friendly.
Drawings
Fig. 1 is a schematic structural diagram of a polarizer with touch and pressure sensing functions according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a touch circuit of the transparent touch circuit layer in FIG. 1;
fig. 3 is a schematic structural diagram of a second embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 4 is a schematic structural diagram of a polarizer with touch and pressure sensing functions according to a third embodiment of the present invention;
FIG. 5 is a schematic view of a connection structure between the pressure sensing layer and the signal processing module in FIG. 1;
FIG. 6 is a schematic diagram of a circuit module structure of the signal processing module in FIG. 5;
fig. 7 is a schematic structural diagram of a polarizer having touch and pressure sensing functions according to a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a fifth embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 9 is a schematic structural diagram of a sixth embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 10 is a schematic structural diagram of a seventh embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 11 is a schematic structural diagram of an eighth embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 12 is a schematic structural diagram of a polarizer having touch and pressure sensing functions according to a ninth embodiment of the present invention;
fig. 13 is a schematic structural diagram of a polarizer with touch and pressure sensing functions according to a tenth embodiment of the present invention;
fig. 14 is a schematic structural diagram of an eleventh embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 15 is a schematic structural diagram of a twelfth embodiment of a polarizer with touch and pressure sensing functions according to the present invention;
fig. 16 is a schematic structural diagram of a thirteen embodiment of the polarizer with touch and pressure sensing functions according to the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention, but the present invention is not limited thereto.
The polaroid with touch and pressure induction functions provided by the invention is characterized in that a transparent touch circuit layer and a pressure induction layer are further added on the basis of the existing polaroid, the transparent touch circuit layer and the pressure induction layer are combined into the polaroid, and the transparent touch circuit layer and the pressure induction layer cannot be arranged in a contact manner. The following describes in detail the structure of the polarizer with touch and pressure sensing functions according to several embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a polarizer with touch and pressure sensing functions according to a first embodiment of the present invention. As shown in fig. 1, in this embodiment, the polarizer with touch and pressure sensing functions includes: the polarizing layer 20 and the first protective layer 10 that is located above the polarizing layer 20 and the second protective layer 30 that is located below the polarizing layer 20 also include: a transparent touch circuit layer 40 disposed between the first protective layer 10 and the polarizing layer 20 for sensing a touch operation of a user; and the pressure sensing layer 50 is arranged on a surface of the second protection layer 30, which is not in contact with the polarizing layer 20, i.e. below the second protection layer 30, and is used for converting pressure generated by a touch operation of a user into a corresponding electric signal to be output.
The polarizing layer 20 is a polarizing film in the prior art, and may be formed by using polyvinyl alcohol (PVA) as a base material, dyeing with various dichroic organic dyes, stretching under certain humidity and temperature conditions to absorb the dichroic dyes to form a polarizing film, dehydrating, and drying to form the PVA polarizing film. In order to protect the physical properties of the PVA polarizing film, after the transparent touch circuit layer 40 is stacked on one side of the PVA polarizing film (i.e., the polarizing layer 20), a layer of Triacetylcellulose (TAC) film having high light transmittance, good water resistance and certain mechanical strength is respectively disposed on the surface of the transparent touch circuit layer 40 not in contact with the polarizing layer 20 and the surface of the polarizing layer 20 not in contact with the transparent touch circuit layer 40 for protection, wherein the upper and lower layers of TAC film are the first protective layer 10 and the second protective layer 30.
Further, the transparent touch circuit layer 40 is an AZO touch circuit layer, which is formed by using a thin film made of an aluminum-doped zinc oxide (AZO) material. The AZO film is a transparent conductive film, has good preferred orientation of a C axis, and forms the piezoelectric material when the self orientation is consistent and is vertical to the substrate. Meanwhile, the material has high transmittance (T% >80) in a visible light range, high reflectivity (R% >60) in a near-middle infrared light range, excellent conductivity (rho <10-3 omega cm) and the like. Therefore, the AZO film has optical and electrical properties similar to those of an ITO film, and the AZO film is simple in preparation process, low in price, non-toxic, good in stability and the like.
As shown in fig. 2, the touch circuit of the transparent touch circuit layer 40 adopts a plurality of triangular interdigital electrodes, each having an interface terminal. When a user uses a finger or a conductor to perform touch operation on the polarizer, the electrode signal changes, the electrode signal is output to a corresponding interface of the touch circuit 110 through a corresponding interface terminal and a lead of the corresponding interface terminal, and the touch circuit 110 calculates the touch position of the finger or the conductor by using a specific algorithm.
Further, the pressure-sensitive layer 50 is a ZnO pressure-sensitive layer, which is formed using a thin film made of a zinc oxide (ZnO) material. The ZnO film is an optical transparent film, and pure ZnO and doped films thereof have excellent photoelectric properties, wide application, easily available raw materials, low price and low toxicity, and become one of the film materials with the most development potential. Currently, investigating the properties of ZnO materials involves many areas of research, including: transparent conducting films (TCO), Surface Acoustic Wave (SAW) devices, laser lasers, gas sensors, ultraviolet detectors, displays, and buffer layers interacting with gallium nitride (GaN). In addition, the ZnO film not only has excellent piezoelectric performance, but also has high resistivity due to the preferred orientation of the C axis, thereby having high acoustoelectric conversion efficiency. The high resistivity of ZnO film and the preferred orientation of single C-axis crystal determine that it has good piezoelectric constant and electromechanical coupling coefficient, and can be used as various piezoelectric, calendaring, electroacoustic and acousto-optic devices.
As the pressure-sensitive layer 50 shown in fig. 1 is disposed under the second protective layer 30, in addition to this arrangement, the pressure-sensitive layer 50 may also be disposed on a surface of the first protective layer 10 on a side not in contact with the transparent touch circuit layer 40, i.e., on the first protective layer 10 (as shown in fig. 3), or the pressure-sensitive layer 50 may be disposed between the polarizing layer 20 and the second protective layer 30 (as shown in fig. 4).
Fig. 5 is a schematic view of a connection structure between the pressure sensing layer and the signal processing module in fig. 1. Fig. 6 is a schematic circuit block diagram of the signal processing module in fig. 5. As shown in fig. 5 and 6, in this embodiment, the pressure-sensitive layer 50 functions to: the piezoelectric effect is utilized to realize the touch pressure sensing function. The specific working principle is as follows: the pressure sensing layer 50 generates different deformations according to different touch force, thereby outputting different electrical signals corresponding to the touch force; the signal processing module 90 recognizes the magnitude of the corresponding touch force to generate the pressure electrical signal according to the electrical signal output by the pressure sensing layer 50, and outputs the pressure electrical signal to the terminal device 100 to execute the corresponding operation. For example: when a user applies 2N force to act on the touch screen, the pressure sensing layer 50 outputs a 2V electrical signal, the signal processing module 90 receives the 2V electrical signal, recognizes that the touch strength of the user is 2N, generates a corresponding pressure electrical signal V1 for the recognized 2N touch strength, outputs the pressure electrical signal V1 to the terminal device 100 (e.g., a central processing module of a mobile phone or a central processing module of a computer), and performs a corresponding operation through the terminal device 100, such as opening a browser interface; when a user applies a 5N force to the touch screen, the pressure sensing layer 50 outputs a 15V electrical signal, the signal processing module 90 receives the 15V electrical signal, recognizes that the touch strength of the user is 5N, generates a corresponding pressure electrical signal V2 for the recognized 5N touch strength, outputs the pressure electrical signal V2 to the terminal device 100 (e.g., a central processing module of a mobile phone or a central processing module of a computer), and performs a corresponding operation through the terminal device 100, such as opening a call interface.
Optionally, the pressure sensing layer 50 has a plurality of signal output terminals, and the plurality of signal output terminals are uniformly distributed around the pressure sensing layer 50; the signal processing module 90 has a plurality of signal input terminals; the number of the signal output ends of the pressure sensing layer 50 is equal to that of the signal input ends of the signal processing module 90, the signal output ends of the pressure sensing layer 50 are correspondingly connected with the signal input ends of the signal processing module 90, and the signal processing module 90 can identify the touch strength of the user according to the electric signals output by the signal output ends of the pressure sensing layer 50.
Specifically, as shown in fig. 5, the pressure sensing layer 50 has four signal output ends, namely a first signal output end 51, a second signal output end 52, a third signal output end 53 and a fourth signal output end 54; the signal processing module 90 has four signal input terminals, which are a first signal input terminal 91, a second signal input terminal 92, a third signal input terminal 93 and a fourth signal input terminal 94; the four signal output ends of the pressure sensing layer 50 are respectively connected to the four signal input ends of the signal processing module 90, that is, the first signal output end 51 is connected to the first signal input end 91, the second signal output end 52 is connected to the second signal input end 92, the third signal output end 53 is connected to the third signal input end 93, and the fourth signal output end 54 is connected to the fourth signal input end 94.
The signal input end of the signal processing module 90 is connected to the signal output end of the pressure sensing layer 50, and the signal processing module 90 can identify the touch force of the user according to the electric signal output by the signal output end of the pressure sensing layer 50 to generate a pressure electric signal, and output the pressure electric signal to the terminal device 100 to execute corresponding operation.
As shown in fig. 6, the signal processing module 90 further includes: the device comprises an amplifying module 901, a filtering module 902, a dynamic zero calibration module 903 and a micro control module 904; an input end of the amplifying module 901 (i.e., a signal input end of the signal processing module 90) is connected to a signal output end of the pressure sensing layer 50, and is configured to amplify an electrical signal output by the signal output end of the pressure sensing layer 50; the input end of the filtering module 902 is connected to the output end of the amplifying module 901, and is used for filtering interference clutter in the electrical signal amplified by the amplifying module 901; the input end of the dynamic zero calibration module 903 is connected with the output end of the filtering module 902, and is used for calibrating the electric signal output by the filtering module 902, ensuring the stability of the electric signal and reducing the system error; the input end of the micro control module 904 is connected to the output end of the dynamic zero calibration module 903, and identifies the magnitude of the touch force of the user according to the electrical signal output by the dynamic zero calibration module 903, and outputs the pressure electrical signal to the terminal device 100 to execute a corresponding operation.
In addition, when the micro control module 904 does not have an analog-to-digital conversion function, an analog-to-digital conversion module is further disposed between the dynamic zeroing module 903 and the micro control module 904, an input end of the analog-to-digital conversion module is connected to an output end of the dynamic zeroing module 903, and an output end of the analog-to-digital conversion module is connected to an input end of the micro control module 904, and is configured to convert an analog electrical signal output by the dynamic zeroing module 903 into a digital electrical signal and output the digital electrical.
It should be noted that, the various modules described above are implemented by improving existing hardware elements, and are not limited herein.
Fig. 7 is a schematic structural diagram of a polarizer with touch and pressure sensing functions according to a fourth embodiment of the present invention. The polarizer with touch and pressure sensing functions shown in fig. 7 is based on the structure of the polarizer with touch and pressure sensing functions shown in fig. 4, and a pressure sensitive adhesive layer 60 is further disposed under the second protective layer 30. The pressure-sensitive adhesive layer 60 mainly employs an adhesive of a type having sensitivity to pressure, and has excellent adhesion durability and excellent low light leakage under high temperature or high temperature and humidity conditions. The adhesive of the pressure-sensitive adhesive layer has the effect similar to that of a light diffusion film, and is applied to the polaroid, so that the polaroid has the light diffusion function, different light diffusion effects can be realized by adjusting the proportion of diffusion particles, and the polaroid has better practical value.
Optionally, the polarizer with touch and pressure sensing functions shown in fig. 7 further includes: a protective film 70 positioned above the first protective layer 10 and a release film 80 positioned below the pressure-sensitive adhesive layer 60. The protective film 70 and the barrier film 80 protect the polarizer, and the barrier film 80 should be removed when the polarizer is actually used.
Of course, a pressure sensitive adhesive layer, an isolation film and a protective film may be further disposed on the basis of the structure of the polarizer with touch and pressure sensing functions shown in fig. 1 and 3. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer with touch and pressure sensing functions shown in fig. 1 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on a side surface of the pressure-sensitive layer 50 not contacting the second protection layer 30, i.e., below the pressure-sensitive layer 50, the isolation film (not shown in the figure) is disposed on a side surface of the pressure-sensitive adhesive layer not contacting the pressure-sensitive layer 50, i.e., below the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on a side surface of the first protection layer 10 not contacting the transparent touch circuit layer 40, i.e., above the first protection layer 10; the specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the structure of the polarizer with touch and pressure sensing functions shown in fig. 3 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the second protection layer 30 not contacting with the polarizing layer 20, i.e. under the second protection layer 30, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer not contacting with the second protection layer 30, i.e. under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the pressure-sensitive layer 50 not contacting with the first protection layer 10, i.e. over the pressure-sensitive.
Fig. 8 is a schematic structural diagram of a fifth embodiment of the polarizer with touch and pressure sensing functions according to the present invention. As shown in fig. 8, the polarizer with touch and pressure sensing functions in this embodiment is different from the polarizer with touch and pressure sensing functions shown in fig. 1 in that the transparent touch circuit layer 40 is disposed on the surface of the first protective layer 10 on the side not in contact with the polarizing layer 20, i.e., the transparent touch circuit layer 40 is disposed on the first protective layer 10.
Further, a pressure sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer with touch and pressure sensing functions shown in fig. 8. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer with touch and pressure sensing functions shown in fig. 8 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on a side surface of the pressure-sensitive layer 50 not contacting the second protection layer 30, i.e., below the pressure-sensitive layer 50, the isolation film (not shown in the figure) is disposed on a side surface of the pressure-sensitive adhesive layer not contacting the pressure-sensitive layer 50, i.e., below the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on a side surface of the transparent touch circuit layer 40 not contacting the first protection layer 10, i.e., above the transparent touch circuit layer.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 1, and is not described herein again.
The pressure-sensitive layer 50 shown in fig. 8 is disposed on a surface of the second protective layer 30 on a side not in contact with the polarizing layer 20, i.e., under the second protective layer 30. In addition to this arrangement, the pressure-sensitive layer 50 may also be disposed between the first protective layer 10 and the polarizing layer 20 (as shown in fig. 9), or the pressure-sensitive layer 50 may also be disposed between the polarizing layer 20 and the second protective layer 30 (as shown in fig. 10).
Further, a pressure-sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer with touch and pressure sensing functions shown in fig. 9 and 10. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer with touch and pressure sensing functions shown in fig. 9 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the second protection layer 30 that is not in contact with the polarizing layer 20, i.e., under the second protection layer 30, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer that is not in contact with the second protection layer 30, i.e., under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the transparent touch circuit layer 40 that is not in contact with the first protection layer 10, i.e.; the specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the polarizer structure with touch and pressure sensing functions shown in fig. 10 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the second protection layer 30 not contacting the pressure-sensing layer 50, i.e. under the second protection layer 30, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer not contacting the second protection layer 30, i.e. under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the transparent touch circuit layer 40 not contacting the first protection layer 10, i.e. on the transparent touch circuit layer 40.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 8, and is not described herein again.
Fig. 11 is a schematic structural diagram of an eighth embodiment of the polarizer with touch and pressure sensing functions provided in the present invention. As shown in fig. 11, the polarizer with touch and pressure sensing functions in this embodiment is different from the polarizer with touch and pressure sensing functions shown in fig. 1 in that the transparent touch circuit layer 40 is disposed on a surface of the second protection layer 30 on a side not in contact with the polarizing layer 20, i.e., the transparent touch circuit layer 40 is disposed under the second protection layer 30. The pressure-sensitive layer 50 is disposed between the first protective layer 10 and the polarizing layer 20.
Further, a pressure sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer with touch and pressure sensing functions shown in fig. 11. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the polarizer with touch and pressure sensing functions shown in fig. 11 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the transparent touch circuit layer 40 that is not in contact with the second protection layer 30, i.e., under the transparent touch circuit layer 40, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer that is not in contact with the transparent touch circuit layer 40, i.e., under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the first protection layer 10 that is not in contact with the pressure sensing layer 50, i.e., over the first.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 1, and is not described herein again.
The pressure-sensitive layer 50 shown in fig. 11 is disposed between the first protective layer 10 and the polarizing layer 20. In addition to this arrangement, the pressure-sensitive layer 50 may also be disposed on a surface of the first protective layer 10 on a side not in contact with the polarizing layer 20, i.e., on the first protective layer 10 (as shown in fig. 12), or the pressure-sensitive layer 50 may also be disposed between the polarizing layer 20 and the second protective layer 30 (as shown in fig. 13).
Further, a pressure-sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer having touch and pressure sensing functions shown in fig. 12 and 13. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer structure with touch and pressure sensing functions shown in fig. 12 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the transparent touch circuit layer 40 that is not in contact with the second protection layer 30, i.e., under the transparent touch circuit layer 40, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer that is not in contact with the transparent touch circuit layer 40, i.e., under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the pressure-sensitive layer 50 that is not in contact with the first protection layer 10, i; the specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the polarizer structure with touch and pressure sensing functions shown in fig. 13 is that the pressure-sensitive adhesive layer (not shown) is disposed on the surface of the transparent touch circuit layer 40 not in contact with the second protection layer 30, i.e., under the transparent touch circuit layer 40, the isolation film (not shown) is disposed on the surface of the pressure-sensitive adhesive layer not in contact with the transparent touch circuit layer 40, i.e., under the pressure-sensitive adhesive layer, and the protection film (not shown) is disposed on the surface of the first protection layer 10 not in contact with the polarization layer 20, i.e., on the first protection layer 10.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 11, and is not described herein again.
Fig. 14 is a schematic structural diagram of an eleventh embodiment of a polarizer with touch and pressure sensing functions according to the present invention. As shown in fig. 14, the polarizer with touch and pressure sensing functions in this embodiment is different from the polarizer with touch and pressure sensing functions shown in fig. 1 in that a transparent touch circuit layer 40 is disposed between the polarizing layer 20 and the second protective layer 30.
Further, a pressure sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer with touch and pressure sensing functions shown in fig. 14. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer structure with touch and pressure sensing functions shown in fig. 12 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on a side surface of the pressure-sensitive layer 50 not contacting the second protection layer 30, i.e., below the pressure-sensitive layer 50, the isolation film (not shown in the figure) is disposed on a side surface of the pressure-sensitive adhesive layer not contacting the pressure-sensitive layer 50, i.e., below the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on a side surface of the first protection layer 10 not contacting the polarization layer 20, i.e., above the first protection layer.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 1, and is not described herein again.
The pressure-sensitive layer 50 shown in fig. 14 is disposed on a surface of the second protective layer 30 on a side not in contact with the transparent touch circuit layer 40, i.e., under the second protective layer 30. In addition to this arrangement, the pressure-sensitive layer 50 may also be disposed on a surface of the first protective layer 10 on a side not in contact with the polarizing layer 20, i.e., on the first protective layer 10 (as shown in fig. 15), or the pressure-sensitive layer 50 may also be disposed between the first protective layer 10 and the polarizing layer 20 (as shown in fig. 16).
Further, a pressure-sensitive adhesive layer, an isolation film, and a protective film may be further disposed on the basis of the structure of the polarizer having touch and pressure sensing functions shown in fig. 15 and 16. The specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the basis of the polarizer with touch and pressure sensing functions shown in fig. 15 is that the pressure-sensitive adhesive layer (not shown in the figure) is disposed on the surface of the second protection layer 30 that is not in contact with the transparent touch circuit layer 40, i.e., under the second protection layer 30, the isolation film (not shown in the figure) is disposed on the surface of the pressure-sensitive adhesive layer that is not in contact with the second protection layer 30, i.e., under the pressure-sensitive adhesive layer, and the protection film (not shown in the figure) is disposed on the surface of the pressure-sensitive layer 50 that is not in contact with the first protection layer 10, i.; the specific way of disposing the pressure-sensitive adhesive layer, the isolation film and the protection film on the polarizer with touch and pressure sensing functions shown in fig. 16 is that the pressure-sensitive adhesive layer (not shown) is disposed on the surface of the second protection layer 30 not contacting the transparent touch circuit layer 40, i.e. under the second protection layer 30, the isolation film (not shown) is disposed on the surface of the pressure-sensitive adhesive layer not contacting the second protection layer 30, i.e. under the pressure-sensitive adhesive layer, and the protection film (not shown) is disposed on the surface of the first protection layer 10 not contacting the pressure-sensing layer 50, i.e. on the first protection layer 10.
Except for the above differences, the specific arrangement of the structures of the other layers in this embodiment can be referred to the description of fig. 14, and will not be described herein again.
In addition, the pressure-sensitive adhesive layer, the release film, and the protective film in the first to thirteenth embodiments may be disposed as needed by those skilled in the art, and are not limited herein.
It should be noted that, the closer the transparent touch circuit layer is to the touch position, the better the change of the electrode signal can be sensed, so as to accurately calculate the touch position; the deeper its forced induction layer sets up the position (be close to the bottom of polaroid more promptly), the dynamics that the forced induction layer bore is bigger, and the response effect can be better, and the different touch-control effects of ability clearer resolution dabs and heavily pressing.
The invention also provides a touch display device which comprises the polaroid with the touch and pressure induction functions.
The polaroid with the touch and pressure sensing functions can simplify the manufacturing process and reduce the cost, has the pressure sensing function on the basis of not increasing the thickness of the touch screen, and can be widely applied to touch screens of electronic products such as mobile phones, tablet computers or watches and touch screens of operation windows of industrial equipment.
The various modules and circuits mentioned in the present invention are all circuits implemented by hardware, and although some of the modules and circuits integrate software, the present invention protects hardware circuits integrating the corresponding functions of the software, not just the software itself.
It will be appreciated by those skilled in the art that the arrangement of devices shown in the figures or embodiments is merely schematic and representative of a logical arrangement. Where modules shown as separate components may or may not be physically separate, components shown as modules may or may not be physical modules.
Finally, it is noted that: the above-mentioned embodiments are only examples of the present invention, and it is a matter of course that those skilled in the art can make modifications and variations to the present invention, and it is considered that the present invention is protected by the modifications and variations if they are within the scope of the claims of the present invention and their equivalents.
Claims (16)
1. A polarizer with touch and pressure sensing functions comprises: the polarisation layer and be located first protective layer above the polarisation layer with be located the second protective layer below the polarisation layer, its characterized in that still includes:
the transparent touch circuit layer is used for sensing touch operation of a user; the transparent touch circuit layer is an AZO touch circuit layer; the touch circuit of the transparent touch circuit layer is formed by mutually crossing a plurality of triangular interdigital electrodes, and each electrode is provided with an interface terminal; when a touch operation of a user or a conductor on the polarizer is sensed, an electrode signal of the touch circuit changes;
the pressure sensing layer is used for converting pressure generated by touch operation of a user into a corresponding electric signal to be output; the pressure sensing layer is a ZnO pressure sensing layer;
the transparent touch circuit layer is not in contact with the pressure induction layer.
2. The polarizer with touch and pressure sensing functions according to claim 1, wherein the transparent touch circuit layer is disposed on a surface of the first protective layer that is not in contact with the polarizer layer.
3. The polarizer with touch and pressure sensing functions according to claim 1, wherein the transparent touch circuit layer is disposed between the first protective layer and the polarizing layer.
4. The polarizer with touch and pressure sensing functions according to claim 1, wherein the transparent touch circuit layer is disposed between the polarizing layer and the second protective layer.
5. The polarizer with touch and pressure sensing functions according to claim 1, wherein the transparent touch circuit layer is disposed on a surface of the second protective layer that is not in contact with the polarizer layer.
6. The polarizer with touch and pressure sensing functions according to claim 2, wherein the pressure sensing layer is disposed between the first protective layer and the polarizing layer;
or between the polarizing layer and the second protective layer;
or on a surface of the second protective layer on a side not in contact with the polarizing layer.
7. The polarizer with touch and pressure sensing functions according to claim 3, wherein the pressure sensing layer is disposed on a surface of the first protective layer that is not in contact with the transparent touch circuit layer;
or between the polarizing layer and the second protective layer;
or on a surface of the second protective layer on a side not in contact with the polarizing layer.
8. The polarizer with touch and pressure sensing functions according to claim 4, wherein the pressure sensing layer is disposed on a surface of the first protective layer that is not in contact with the polarizer layer;
or between the first protective layer and the polarizing layer;
or the second protective layer is arranged on the surface of one side, which is not contacted with the transparent touch circuit layer, of the second protective layer.
9. The polarizer with touch and pressure sensing functions according to claim 5, wherein the pressure sensing layer is disposed on a surface of the first protective layer that is not in contact with the polarizer layer;
or between the first protective layer and the polarizing layer;
or between the polarizing layer and the second protective layer.
10. The polarizer with touch and pressure sensing functions according to claim 1, further comprising: a protective film over the first protective layer.
11. The polarizer with touch and pressure sensing functions according to claim 1, further comprising: and the pressure sensitive adhesive layer is arranged below the transparent touch circuit layer or the pressure sensing layer or the second protective layer.
12. The polarizer with touch and pressure sensing functions according to claim 11, further comprising: and a release film disposed under the pressure-sensitive adhesive layer.
13. The polarizer with touch and pressure sensing functions according to any one of claims 1 to 12, further comprising: and the signal input end of the signal processing module is connected with the signal output end of the pressure sensing layer and used for identifying the touch force of a user according to the electric signal output by the signal output end of the pressure sensing layer to generate a pressure electric signal and outputting the pressure electric signal to terminal equipment to execute corresponding operation.
14. The polarizer with touch and pressure sensing functions according to claim 13, wherein the signal processing module further comprises: the device comprises an amplifying module, a filtering module, a dynamic zero calibration module and a micro control module; wherein,
the amplifying module is connected with the signal output end of the pressure sensing layer and is used for amplifying the electric signal output by the signal output end of the pressure sensing layer;
the filtering module is connected with the amplifying module and is used for filtering interference clutter in the electric signal amplified by the amplifying module;
the dynamic zero calibration module is connected with the filtering module and is used for calibrating the electric signal output by the filtering module;
and the micro control module is connected with the dynamic zero calibration module and used for identifying the touch control force of the user according to the electric signal output by the dynamic zero calibration module and outputting the touch control force to the terminal equipment to execute corresponding operation.
15. The polarizer with touch and pressure sensing functions according to claim 13, wherein the pressure sensing layer has a plurality of signal output terminals, and the signal output terminals are uniformly distributed around the pressure sensing layer; the signal processing module is provided with a plurality of signal input ends; the signal processing module can identify the touch strength of a user according to electric signals output by the signal output ends of the pressure sensing layer.
16. A touch display device comprising the polarizer having touch and pressure sensing functions of any one of claims 1 to 15.
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| CN107643843A (en) * | 2016-07-20 | 2018-01-30 | 中兴通讯股份有限公司 | The recognition methods of pressure and device, touch-screen and terminal |
| KR102057065B1 (en) * | 2017-02-23 | 2019-12-18 | 동우 화인켐 주식회사 | Optical stack structure integrated with polarizer and touch sensor and display device including the same |
| CN107167954A (en) * | 2017-05-19 | 2017-09-15 | 合肥市惠科精密模具有限公司 | One kind possesses touch-control sensing function colored filter and its manufacture method |
| CN110221727A (en) * | 2019-06-11 | 2019-09-10 | 深圳市鑫友道科技有限公司 | A kind of novel polaroid and manufacturing process with touch screen function |
| CN112505961B (en) * | 2020-12-18 | 2023-07-25 | 深圳市华星光电半导体显示技术有限公司 | Display device and polarizer |
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