Dimming glass / film-based touch control system and method, and vehicle

Abstract

Disclosed in the present invention are a dimming glass / film-based touch control system and method, and a vehicle. In the present invention, by means of conductive layers in a dimming glass / film, corresponding capacitive models are formed between the dimming glass / film and a body ground of a carrier body; a corresponding monitoring circuit is formed on the basis of the formed capacitive models, wherein the monitoring circuit can generate a current when the capacitive models change; and when the dimming glass / film is touched, a current change generated in the monitoring circuit is detected, and a touch detection signal is formed on the basis of detected current change information. The dimming glass / film-based touch control solution provided by the present invention can realize a touch control function on the basis of existing dimming glass / film configurations, without requiring special process treatment for the dimming glass / film configurations; moreover, the dimming glass / film-based touch control solution is simple to implement, stable and reliable.

Description

A light control glass / film based touch system, method and vehicle TECHNICAL FIELD

[0001] The present application relates to light control glass / film technology, in particular to touch control technology of light control glass / film. BACKGROUND

[0002] Light control film / glass technology is applied in many fields based on its specific functions, such as in the field of automotive light control (color changing) glass or building industry light control glass curtain wall.

[0003] In the application of existing light control film / glass technology, a corresponding light control controller is needed to control the applied electric field to the electrochromic material, and a separate control component (such as a switch, button or central control screen) is needed to be set for human-computer interaction, and the light control controller is triggered according to the human-computer interaction result.

[0004] Referring to FIG. 1, a control principle diagram of the existing vehicle light control (color changing) film / glass is shown. The overall scheme of the existing vehicle light control (color changing) film / glass involves a human-computer interaction component (such as a switch, button or central control screen) 10, a whole VCU 20, a light control controller 30 and a light control (color changing) film / glass 40.

[0005] At the same time, the existing vehicle light control (color changing) film / glass is controlled by the driver and passenger 50 through the switch, button, central control screen and other human-computer interaction components 10 on the whole vehicle to generate a corresponding control signal, and the control signal is given to the whole vehicle VCU 20. The whole vehicle VCU 20 then issues instructions to the light control controller 30 through CAN / LIN communication, and the light control controller 30 drives the light control (color changing) film / glass 40 to change the haze of the light control (color changing) film / glass according to the received instructions. The light control controller 30 can change the state (such as color, haze, etc.) of the light control (color changing) film / glass by outputting voltages of different amplitudes.

[0006] As can be seen from the above, the existing electrochromic technology needs to set a special control component for human-computer interaction as a switch signal input to cooperate with the light control controller 30 to control the electrochromic. The overall scheme is complex and the cost is high, and the human-computer interaction experience is poor.

[0007] The Chinese invention patent application with the application publication number CN 110568651 A discloses a touch light control device and a touchable light control vehicle window. The disclosed scheme is based on light control film, which detects the capacitance between the two conductive layers in the light control film through a touch sensing chip. When touching, a certain force needs to be applied to the film to change the distance between the two conductive layers, thereby changing the capacitance between the two.

[0008] This scheme is specifically based on the relative change of the two conductive layers in the dimming film to realize the touch function, and the following problems exist in the actual application process:

[0009] (1) This scheme needs to change the distance between the two conductive layers through touch to change the capacitance. In actual application, the film is sandwiched in the glass, which will greatly affect the effectiveness and reliability of touch;

[0010] (2) This scheme can realize touch function by touching any one of the two conductive layers. In actual application, it is impossible to avoid operation by people outside the vehicle or outside;

[0011] (3) This scheme needs to use the two conductive layers in the dimming film for color changing. As we all know, there is an alternating voltage of tens to hundreds of volts between the two conductive layers based on the characteristics of the film when the dimming film is working. In this case, it is very difficult to detect the subtle capacitance change between the two conductive layers in terms of technology. Even if the reliability and accuracy of detection can be realized, the overall practicability is very poor.

[0012] The Chinese invention patent application with the application publication number CN109557701A discloses a color-changing glass that can be controlled by gestures or touch. This scheme uses the transparent conductive layer in the color-changing glass as the sensing electrode of the capacitive touch sensor, thereby forming multiple capacitive touch sensors. By detecting whether the capacitance value of the multiple capacitive touch sensors changes and the change order, it can be determined whether the color-changing glass needs to be controlled to change color and the color-changing area and direction. In this scheme, how the transparent conductive layer in the color-changing glass constitutes the capacitive touch sensor, how the capacitive touch sensor is formed to produce capacitance value changes, and how to detect the capacitance value changes in the capacitive touch sensor are not explained. Such a scheme in implementation, how to perform reliable and accurate detection is the primary problem to be solved.

[0013] Therefore, how to realize stable and reliable touch function on the electrochromic material of the electrochromic scheme is a problem to be solved in the field. SUMMARY

[0014] In view of the problems existing in the reliability of the existing dimming film / glass scheme in realizing touch function, the purpose of the present application is to provide a touch system based on dimming glass / film, which can directly realize stable and reliable touch function on the dimming film / glass. On this basis, the present application further provides a corresponding touch method and a vehicle using the touch system.

[0015] In order to achieve the above purpose, the touch system based on dimming glass / film provided by the present application comprises a dimming glass / film and a dimming driving module.

[0016] The first conductive layer and the second conductive layer in the dimming glass / film are arranged to form corresponding first and second capacitance models between the system carrying body and the body;

[0017] The touch control system based on the dimming glass / film further comprises a touch detection module configured to generate a detection signal and a shielding signal;

[0018] The touch detection module transmits the detection signal to the first conductive layer and is configured to monitor the change of the first capacitance model, and the change of the current formed in the loop formed between the touch detection module and the first capacitance model, and form a touch detection signal according to the monitored current change information;

[0019] The touch detection module transmits the shielding signal to the second conductive layer and is configured to compensate for the change of the second capacitance model.

[0020] In some embodiments of the present application, the touch detection module and the dimming driving module are electrically isolated.

[0021] In some embodiments of the present application, the dimming driving module is electrically isolated between the system carrying body and the body.

[0022] In some embodiments of the present application, the touch detection module is electrically isolated from the connected conductive layer.

[0023] In some embodiments of the present application, the touch detection module and the connected conductive layer are connected by one-way isolation or capacitive isolation.

[0024] In some embodiments of the present application, the first conductive layer in the dimming glass / film comprises a single conductive area or multiple conductive sub-areas.

[0025] In some embodiments of the present application, when the conductive layer comprises multiple conductive sub-areas, each conductive sub-area is connected to the touch detection module and can form a corresponding capacitance model.

[0026] In order to achieve the above-mentioned purpose, the present application provides a touch control method based on dimming glass / film, which comprises:

[0027] Based on the conductive layer in the dimming glass / film, corresponding capacitance models are formed between the dimming glass / film and the body of the carrying body;

[0028] Based on the formed capacitance models, a corresponding monitoring loop is formed, which can generate current when the capacitance model changes;

[0029] When the dimming glass / film is touched, the current change in the monitoring loop is monitored, and a touch detection signal is formed according to the monitored current change information.

[0030] In some embodiments of the present application, the control method monitors a monitoring loop formed by a set of conductive layers in the dimming glass / film based on a detection signal, and shields another set of conductive layers in the dimming glass / film based on a shielding signal.

[0031] To achieve the above-mentioned purpose, the vehicle provided by the present application is provided with a touch control system based on dimming glass / film.

[0032] The touch control scheme based on dimming glass / film provided by the present application can realize touch control function on the basis of the existing dimming glass / film structure scheme without special process treatment of the dimming glass / film structure scheme, and the touch control scheme based on dimming glass / film is simple and stable and reliable.

[0033] The touch control scheme based on dimming glass / film provided by the present application can make the dimming glass / film directly serve as an input device of control signal without the need of additionally setting a controller, so that the whole control operation is more simple and convenient, the experience is improved, and the whole cost is reduced.

[0034] The touch control scheme based on dimming glass / film provided by the present application can be applied to vehicles and also applied to dimming control of glass curtain walls in the building industry. BRIEF DESCRIPTION OF DRAWINGS

[0035] The present application will be further described below in combination with the drawings and specific embodiments.

[0036] Fig. 1 is a control principle diagram of the existing dimming (color changing) film / glass of the vehicle;

[0037] Fig. 2 is a state example diagram of the two layers of ITO conductive layers in the PDLC dimming film or glass without power supply;

[0038] Fig. 3 is a state example diagram of the two layers of ITO conductive layers in the PDLC dimming film or glass with power supply;

[0039] Fig. 4 is a control principle diagram of the dimming glass / film in the present application;

[0040] Fig. 5 is a system principle diagram of the touch control system based on dimming glass / film in Example 1 of the present application;

[0041] Fig. 6 is a principle diagram of touch detection of the dimming film or glass in Example 1 of the present application;

[0042] Fig. 7 is an example diagram of the multi-zone dimming film or glass in Example 2 of the present application;

[0043] Fig. 8 is a schematic diagram of the principle of multi-zone dimming film or glass touch detection in Example 2 of the present application. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0045] The present application scheme discards the scheme of needing to set a controller (switch, key, central control screen, etc.) independently relative to the dimming film or dimming glass to generate a control signal to the corresponding control element (such as VCU), and then controlling the dimming controller to control the action of the dimming glass / film, and is innovative in integrating the touch function on the dimming glass / film without any special process treatment of the dimming glass / film, cooperating with the dimming control driving circuit and the touch signal detection circuit, and realizing direct touch of the dimming glass / film as signal input to turn on or off or adjust the working state of the dimming glass / film.

[0046] The dimming glass / film involved in the present application scheme mainly involves PDLC, SPD, EC, and LC dimming film or glass.

[0047] It should be noted that the dimming glass / film involved in the present application scheme is not limited to the above forms, and it can be understood that as long as the dimming glass / film has two conductive layers, it belongs to the scope involved in the present application scheme.

[0048] For the sake of illustration, the PDLC dimming film or glass is taken as an example to illustrate the touch control scheme based on the dimming glass / film given by the present application.

[0049] Referring to Figs. 2 and 3, the basic structure principle diagram of the PDLC dimming film or glass is shown. As shown in the figure, the PDLC dimming film or glass 40 mainly includes two ITO conductive layers 41, a dispersion liquid crystal 42 and liquid crystal particles 43 located between the two ITO conductive layers 41, and an insulating film or glass 44 located outside the two ITO conductive layers 41.

[0050] As shown in Fig. 2, when the two ITO conductive layers 41 of the PDLC dimming film or glass 40 are not powered, the internal liquid crystal particles 43 are arranged in disorder, and visible light cannot effectively reach the other side, and the film / glass appears in a fogging state.

[0051] As shown in Fig. 3, after the two ITO conductive layers 41 of the PDLC dimming film or glass 40 are powered, the internal liquid crystal particles are regularly arranged under the action of the electric field force, so that visible light can reach the other side, and the film / glass appears in a transparent state.

[0052] To this end, the application utilizes the structural features of the light-adjusting film or glass with each side having a conductive layer, introduces a touch detection module cooperating with the two conductive layers, constructs the first conductive layer into a signal input layer of touch, constructs the second conductive layer into a signal shielding layer, and forms a corresponding capacitance model between the first conductive layer and the body of the main body bearing the light-adjusting film or glass.

[0053] It should be noted that "first" and "second" here are only used to distinguish the two conductive layers in name, and are not limited to the order between the two conductive layers.

[0054] On this basis, when the first side of the light-adjusting film or glass where the first conductive layer is located is touched, the touch detection module will be able to detect the touch signal; and when the second side of the light-adjusting film or glass where the second conductive layer is located is touched, the touch detection module will not detect the touch signal, i.e. there will be no signal input.

[0055] In this way, the touch signal detected by the touch detection module can be used as a signal input for switching the light-adjusting film or glass, for opening or closing the light-adjusting function of the light-adjusting film or glass, or for adjusting the light-adjusting state (such as color change, haze, etc.) of the light-adjusting film or glass.

[0056] As shown in FIG. 4, in specific application, the application scheme introduces a light-adjusting controller 100, and the light-adjusting controller 100 drives the connection of the light-adjusting film or glass 200 to realize the integration of the touch function on the light-adjusting film or glass 200.

[0057] The light-adjusting controller 100 introduced here is configured with a corresponding light-adjusting driving function module and a touch detection module, wherein the light-adjusting driving function module is configured to connect the conductive layer in the light-adjusting film or glass 200 to control the energization state of the conductive layer in the light-adjusting film or glass 200, and the energization state here includes whether to energize, the energization voltage size or the energization time, etc.

[0058] Since the energization state of the conductive layer in the light-adjusting film or glass 200 corresponds to the opening and closing of the light-adjusting function of the light-adjusting film or glass 200, and the light-adjusting state, the light-adjusting driving function module can realize the control of the opening and closing of the light-adjusting function of the light-adjusting film or glass 200, and the light-adjusting state through the corresponding control signal.

[0059] The touch detection module is configured to capacitively isolate the connection with the conductive layer in the light-adjusting film or glass 200, to construct the first conductive layer in the light-adjusting film or glass 200 into a signal input layer of touch, construct the second conductive layer into a signal shielding layer, and form a corresponding capacitance model between the first conductive layer and the body of the main body bearing the light-adjusting film or glass.

[0060] The touch detection module thus arranged can detect the touch signal when the first side of the light-adjusting film or glass where the first conductive layer is located is touched, and will not detect the touch signal, i.e. no signal input, when the second side of the light-adjusting film or glass where the second conductive layer is located is touched.

[0061] On this basis, the property of the touch signal detected by the touch detection module is further analyzed and configured, so that the touch signal forms a corresponding relationship with the control signal in the light-adjusting driving function module for controlling the energization state of the conductive layer in the light-adjusting film or glass 200, thereby forming a corresponding touch signal.

[0062] Here, the property of the touch signal is not limited, and can be determined according to actual needs. As an example, the signal strength, signal duration, etc. can be used.

[0063] Here, the corresponding adaptive relationship between the touch signal and the control signal in the light-adjusting driving function module is not limited, and can be determined according to actual needs.

[0064] In this way, the operator 300 can directly touch the light-adjusting film or glass 200 to realize the switching and / or adjusting of the light-adjusting function of the light-adjusting film or glass 200 (such as color change, haze, etc.), without the need for special switch signal input (such as the human-computer interaction assembly 10: switch, button or central control screen in FIG. 1), simplifying the system logic, reducing the cost, and improving the user experience.

[0065] Meanwhile, based on the capacitive isolation connection cooperation between the touch detection module and the conductive layer in the light-adjusting film or glass 200, only one side of the light-adjusting film or glass 200 is integrated with the touch function, and the other side does not have the touch function, which can effectively avoid the mis-triggering in actual application (avoiding the problem that both layers have the touch function, affecting the actual use effect), and ensure the accuracy and reliability of the touch function.

[0066] The following examples are used to illustrate the implementation scheme and corresponding technical features of the scheme given by the present application.

[0067] Example 1

[0068] This example is based on the scheme given by the present application for integrating the touch function into the light-adjusting glass / film, and forms a touch control system scheme based on the light-adjusting glass / film.

[0069] Referring to FIG. 5, the touch control system based on the light-adjusting glass / film given in this example mainly includes two parts of a light-adjusting controller 100 and a light-adjusting glass / film 200.

[0070] The light-adjusting glass / film 200 is arranged on a corresponding bearing body, such as a vehicle body, a wall body, etc.

[0071] The dimming controller 100 in the system mainly comprises a control unit 110, a dimming driving module 120, a touch detection module 130, and a power module 140. The control unit 110 is connected to the dimming driving module 120 and the touch detection module 130, and controls the dimming glass / film 200 through the dimming driving module 120 and the touch detection module 130, so that the dimming glass / film 200 integrates the touch function.

[0072] The power module 140 in the dimming controller 100 is configured as a basic functional module of the dimming controller 100, and is used to manage the power supply of different modules in the whole controller.

[0073] The specific structure of the power module 140 is not limited, and can be determined according to actual needs.

[0074] The control unit 110 in the dimming controller 100 is configured as a control center in the dimming controller 100, and controls other functional modules in the dimming controller and coordinates the mutual cooperation between the corresponding functional modules, so as to realize the corresponding functions of the corresponding dimming controller, such as communication, enabling, detection, control, etc.

[0075] As a further example, the control unit 110 can be composed of MCU, CPU, APU, etc. It can be understood that the specific structure of the control unit 110 is not limited to this.

[0076] The dimming driving module 120 in the dimming controller 100 is specifically configured to be controlled by the control unit 110, and is used to generate the voltage required for driving the dimming glass / film 200 to work based on the power supply provided by the power module 140.

[0077] As an example, the effective power value required for driving the PDLC dimming film or glass is 48VAC sine alternating current, and the dimming driving module 120 needs to convert the received power (such as direct current) into the required alternating current through inversion.

[0078] The structure and working mode of the dimming driving module 120 are not limited, and can be determined according to actual needs, as long as it can form the electrical parameters required for driving the PDLC dimming film or glass.

[0079] As a further optimization setting, in order to avoid the influence of the high voltage output by the dimming drive module 120 on the touch signal, the present example further configures a power isolation module 150 in the dimming controller 100, which is arranged between the power supply module 140 and the dimming drive module 120, and is electrically connected between the power supply module 140 and the dimming drive module 120, thereby realizing the isolation of the dimming drive module 120 from the local (which can be understood as the ground), so as to avoid the influence of the high voltage output by the dimming drive module on the touch signal.

[0080] As an example, the power isolation module 150 in the present example preferably adopts a magnetic isolation mode (i.e. transformer isolation) to realize the isolation of the dimming drive module 120 from the local.

[0081] The composition and working mode of the power isolation module 150 herein are not limited, and can be determined according to actual needs.

[0082] As a further optimization setting, in order to protect the output voltage of the dimming drive module 120, the present example further configures an output protection module 160 in the dimming controller 100, which is specifically configured to be controlled by the control unit 110, and the input end of the output protection module 160 is electrically connected with the output end of the dimming drive module 120, and the output end of the output protection module 160 is used as the output end of the controller and is electrically connected with the dimming glass / film 200, thereby realizing the protection of the driving output voltage of the dimming drive module 120, preventing external overcurrent, short circuit damage to the controller, and also preventing overvoltage or undervoltage or open circuit output of the controller, and improving the safety and reliability of the output.

[0083] The composition and working mode of the output protection module 160 herein are not limited, and can be determined according to actual needs.

[0084] The touch detection module 130 configured in the dimming controller 100 is specifically configured to be controlled by the control unit 110 and is directly signal-connected with the dimming glass / film 200; at least two groups of signal ends are configured on the touch detection module 130, and the two groups of signal ends are respectively signal-connected with two conductive layers in the dimming glass / film; the touch detection module 130 can generate detection signals and shielding signals, and output the detection signals and the shielding signals to the two conductive layers in the dimming glass / film through the two groups of signal ends respectively, and the conductive layers in the dimming glass / film are configured to form a corresponding capacitance model with the corresponding reference ground (which can be understood as the vehicle reference ground for automotive applications, and the ground reference plane for building applications) of the bearing body.

[0085] On this basis, the touch detection module 130 is further configured to form a loop by cooperating the signal end for transmitting the detection signal with the capacitance model formed by the connected conductive layer, and form a current in the loop.

[0086] On the basis, when the side of the conductive layer receiving the detection signal in the dimming glass / film is touched, the capacitance model formed by the conductive layer based on the received detection signal will change, and when the capacitance model changes, the current in the formed loop will be affected, so that the current in the loop changes; at this time, the touch detection module 130 monitors the current change in the loop based on the detection signal, and forms a touch detection signal according to the monitored current change information.

[0087] The composition of the touch detection module 130 herein is not limited, and can be determined according to actual needs, as long as capacitive touch detection can be realized.

[0088] As a further optimization setting, in order to improve the stability and reliability of the detection of the touch detection module 130, the present example further configures a communication isolation module 170 in the dimming controller 100, which is used for communication connection between the touch detection module 130 and the control unit 110, that is, the communication between the touch detection module 130 and the control unit 110 is isolated, to avoid the working state of the control unit 110 interfering with the working state of the touch detection module 130.

[0089] Specifically, based on the deployed communication isolation module 170, the control unit 100 in the dimming controller 100 can be deployed on the same side as the dimming drive module 120 when the dimming controller 100 is electrically deployed, which can effectively reduce the cost, and also enables the function modules related to the dimming drive module 120 (such as the dimming drive module 120, the control unit 110, and the output protection module 160) in the dimming controller 100 to be deployed on the same side and electrically isolated, which are isolated from the function modules such as the touch detection module 130 deployed on the body side of the bearing body, thereby avoiding mutual interference.

[0090] Further, since the dimming drive module voltage is relatively high in actual application process, the power is also relatively large, and the control signals, detection signals, and protection signals required by the control unit are also relatively large. In the present example, the arrangement of the dimming drive module 120 and the dimming controller 100 on the same side can improve the corresponding speed of control detection protection, improve reliability, and also reduce the number of signal isolation and reduce cost.

[0091] In some embodiments of the present example, the present example further configures a communication module 180 in the dimming controller 100, which is configured to be controlled by the control unit 110 and is used to realize the communication function of the controller to the outside.

[0092] Specifically, the communication module 180 is configured to be in communication connection with the communication isolation module 170 in the dimming controller 100, and a communication channel is formed between the communication module 180 and the control unit 110 through the communication isolation module 170. Through the electrical isolation function of the communication isolation module 170, the stability and reliability of the external and internal communication of the communication module 180 can be ensured.

[0093] The dimming controller 100 in the scheme given in the present example is integrated with the touch detection module 130 and the dimming drive module 120. Since the signal output by the touch detection module is very weak, and the output voltage of the dimming drive module is generally tens of volts, in order to avoid the influence of the high-voltage output of the dimming drive module on the touch detection module, the present example innovatively introduces the power isolation module 150 and the communication isolation module 170 in the dimming controller 100, so that the touch detection module 130 and the dimming drive module 120 are electrically isolated when they are deployed, thereby effectively preventing the interference of the output voltage of the drive module on the touch detection.

[0094] At the same time, the dimming drive module 120 and the body of the carrying body of the dimming glass / film 200 are further isolated by the power isolation module 150 and the communication isolation module 170 (such as the body of the vehicle, the chassis, the ground, etc. according to the different carrying bodies). This effectively avoids the influence of the output voltage of the dimming drive module on the capacitance model between the corresponding conductive layer in the dimming glass / film 200 and the body of the carrying body.

[0095] Specifically, the body of the carrying body (such as the body of the vehicle in the figure) serves as the reference ground plane of the entire system, and the functional modules on the drive side (such as the dimming drive module 120 and the control unit 110) are electrically isolated from the body of the carrying body by the power isolation module 150. Thus, the drive side constitutes an independent reference ground plane, and the two reference ground planes cannot form a complete electrical circuit due to the electrical isolation of the power isolation module 150, thereby avoiding mutual electrical influence between them.

[0096] To further illustrate the connection and cooperation of the dimming controller 100 and the dimming glass / film 200 in the system scheme, the realization process of the touch control function integrated in the dimming glass / film 200 is described in detail below by taking the PDLC dimming film or glass provided on a vehicle as an example.

[0097] Referring to FIG. 6, it shows a touch detection principle diagram for the PDLC dimming film or glass 200 as a dimming glass / film and the touch detection module 130 and the dimming drive module 120 in the dimming controller 100 to cooperate, so that the PDLC dimming film or glass 200 integrates the touch control function.

[0098] The PDLC dimming film or glass 200 is arranged on the vehicle, which mainly comprises a first ITO conductive layer 210, a second ITO conductive layer 220, a dispersion liquid crystal and liquid crystal particles 230 between the two ITO conductive layers, a first insulating film or glass 240 outside the first ITO conductive layer 210, and a second insulating film or glass 250 outside the second ITO conductive layer 220; the cooperation between the components is as described above for the PDLC dimming film or glass 40, which will not be repeated here.

[0099] Correspondingly, the dimming controller 100 is also arranged on the vehicle, wherein the output ends of the dimming drive module 120 are respectively electrically connected with the first ITO conductive layer 210 and the second ITO conductive layer 220 in the PDLC dimming film or glass 200; the signal ends of the touch detection module 130 are respectively signal connected with the first ITO conductive layer 210 and the second ITO conductive layer 220 in the PDLC dimming film or glass 200.

[0100] Further, the touch detection module 130 and the dimming drive module 120 are electrically isolated by configuring corresponding power isolation modules and communication isolation modules when deployed, so that the output voltage of the dimming drive module 120 does not form a loop with the touch detection module 130, avoiding affecting the touch detection.

[0101] Further, by configuring corresponding power isolation modules and communication isolation modules, the dimming drive module 120 is isolated from the vehicle body ground, so that the driving voltage of the dimming drive module 120 does not affect the capacitance model between the conductive layer in the PDLC dimming film or glass 200 and the vehicle body ground.

[0102] On this basis, the touch detection module 130 is specifically provided with two groups of signal ends: a first signal end 131 and a second signal end 132.

[0103] The first signal end 131 is configured to be able to output a detection signal and is connected with the first ITO conductive layer 210 in the PDLC dimming film or glass 200 (i.e. connected to one output end of the dimming drive module 120), according to which a corresponding capacitance model C1 is formed between the first ITO conductive layer 210 in the PDLC dimming film or glass 200 and the vehicle body ground, where C1 is an equivalent capacitance model formed between the first ITO conductive layer 210 in the PDLC dimming film or glass 200 and the vehicle body ground.

[0104] The second signal terminal 132 on the touch detection module 130 is configured to output a shielding signal and is connected with the second ITO conductive layer 220 in the PDLC dimming film or glass 200 (i.e. connected to another output terminal of the dimming driving module 120), and accordingly a corresponding capacitive model is formed between the second ITO conductive layer 220 in the PDLC dimming film or glass 200 and the vehicle body ground.

[0105] The touch detection module 130 cooperates with the capacitive model C1 formed by the first ITO conductive layer 210 based on the detection signal output by the first signal terminal 131, so that the first ITO conductive layer 210 is configured as a touch layer; the touch detection module 130 cooperates with the capacitive model formed by the second ITO conductive layer 220 based on the shielding signal output by the second signal terminal 132, so that the second ITO conductive layer 220 is configured as a shielding layer to cooperate with the first ITO conductive layer 210, so that the PDLC dimming film or glass 200 is integrated with a touch function on one side.

[0106] On this basis, in order to further isolate the touch detection signal and prevent the output voltage of the dimming driving module 120 from affecting the touch detection module 130 through a possible coupling loop, the present example further electrically isolates the connection between the signal terminals of the touch detection module 130 and the two conductive layers in the PDLC dimming film or glass 200. In the present example, diode unidirectional isolation or capacitor isolation is preferably used.

[0107] Specifically, the present example further provides a diode D2 on the connection circuit between the first signal terminal 131 of the touch detection module 130 and the first ITO conductive layer 210, and a diode D1 on the connection circuit between the second signal terminal 132 of the touch detection module 130 and the second ITO conductive layer 220. Here, unidirectional isolation is achieved by providing corresponding diodes on the first signal terminal 131 and the second signal terminal 132, so that the high voltage of the driving detection does not interfere with the touch detection module.

[0108] As an alternative, capacitor isolation can also be used for the first signal terminal 131 and the second signal terminal 132.

[0109] Based on the deployment and setting of the above-mentioned scheme, when the touch detection module 130 detects the PDLC dimming film or glass 200, the touch detection module 130 outputs a voltage with a certain waveform as a detection signal through the first signal terminal 131, thereby charging and discharging the conductive coupling capacitive model, forming a loop through the coupling capacitive C1 between the detection object and the vehicle body ground, and the touch detection module 130 monitors the output current of the loop.

[0110] Thus, when the first insulating film or glass 240 outside the first ITO conductive layer 210 in the PDLC dimming film or glass 200 is touched by the driver, the K1 in FIG. 6 is closed (K1 in the figure represents whether the driver touches the dimming film / glass), and a corresponding equivalent capacitance model Cm is formed;

[0111] At this time, the coupling capacitance C1 between the touched object and the vehicle body ground changes, the output current of the formed loop changes synchronously, and the touch detection module 130 effectively detects and identifies the touch state by monitoring the change of the output current of the loop.

[0112] The touch detection module 130 outputs a detection signal through the first signal terminal 131 and outputs a voltage with the same waveform as the detection signal as a shielding signal through the second signal terminal 132 at the same time. Thus, when the equivalent capacitance between the second ITO conductive layer 220 and the vehicle body ground changes (for example, when the second insulating film or glass 250 outside the second ITO conductive layer 220 is touched by a person), the shielding signal charges the capacitance model formed between the second ITO conductive layer 220 and the vehicle body ground to a new steady state, thereby avoiding the influence of the change of the capacitance of the capacitance model formed between the second ITO conductive layer 220 and the vehicle body ground on the detection signal.

[0113] Thus, the PDLC dimming film or glass 200 can be effectively touched only on the side of the first insulating film or glass 240, that is, a touch signal is formed; and the PDLC dimming film or glass 200 cannot be effectively touched on the side of the second insulating film or glass 250, that is, no touch signal is generated. Thus, the PDLC dimming film or glass 200 can realize integrated touch function while realizing one-side touch effectiveness and avoiding the problem of two-side touch effectiveness and false touch.

[0114] As an example, when the one-side touch effective PDLC dimming film or glass 200 is applied (as a vehicle window glass), the side that cannot be touched (for example, the side of the second insulating film or glass 250 shown in FIG. 6) is placed on the outside (for example, as the outside of the vehicle window glass), so that the PDLC dimming film or glass 200 can only be touched from the inside (for example, touch dimming), and the PDLC dimming film or glass 200 cannot be touched from the outside (for example, touch dimming from outside), thereby avoiding various unintended touch operations of the PDLC dimming film or glass 200 from the outside.

[0115] The touch control system based on the light-adjustable glass / film deployed on the vehicle in this example utilizes the capacitance model formed between the conductive layer in the PDLC light-adjustable film or glass 200 and the vehicle body ground as the touch detection object. When the driver or passenger touches the film or glass, the entire capacitance model will change. The touch detection module will simultaneously recharge the capacitance model and detect the current change in the loop formed between the capacitance model during the charging and discharging process. On this basis, the touch detection module is configured to effectively detect and identify the touch state according to the detected current change amount and / or change law, thereby effectively identifying the driver's or passenger's operation on the light-adjustable film / glass, forming corresponding touch control information, and then forming corresponding touch adjustment instructions by the light-adjusting controller, and executing corresponding actions by the light-adjusting driving module according to the touch adjustment instructions: turning on or off the light-adjustable film or glass light-adjusting function, or adjusting the state of the light-adjustable film or glass (such as color change, haze, etc.).

[0116] It should be noted that the touch control system based on the light-adjustable glass / film scheme given in this example is not only applicable to PDLC light-adjustable film or glass, but also applicable to light-adjustable film / glass of other materials. When used for light-adjustable film / glass of other materials, as long as the driving voltage output by the controller is adaptively adjusted according to the working principle of the light-adjustable film / glass of the corresponding material, direct touch control of the film / glass can be realized without the need for special process treatment of the film / glass, and without the need for additional touch film.

[0117] Example 2

[0118] This example gives a corresponding touch control system based on light-adjustable glass / film for multi-zone light-adjustable glass / film to realize the integration of corresponding touch control functions on the multi-zone light-adjustable glass / film.

[0119] As shown in FIG. 7, the multi-zone light-adjustable glass / film involved in this example is a multi-zone light-adjustable film / glass. The multi-zone light-adjustable film / glass, i.e., a light-adjustable film / glass is divided into multiple zones, and the basic structure of the multi-zone film / glass is consistent with that of a common light-adjustable film / glass, similar to integrating multiple films into one film / glass; the multi-zone light-adjustable film / glass has one common conductive layer, and then each zone has another conductive layer.

[0120] For the multi-zone light-adjustable film / glass, the electrical characteristic working principle of the cooperation between the conductive layer of each zone and the common conductive layer is consistent with that of a single zone.

[0121] Accordingly, based on the touch control system scheme based on light-adjustable glass / film given in Embodiment 1, the common conductive layer in the multi-partition light-adjustable film / glass is configured as a shielding layer by the cooperation of the touch detection module and the light-adjusting driving module, and meanwhile, the equivalent capacitance formed between each partition conductive layer in the multi-partition light-adjustable film / glass and the body ground of the bearing body, so that each partition conductive layer is configured as a sensing layer relative to the common conductive layer.

[0122] Specifically, the light-adjusting driving module is adaptively driven and output adjusted according to the configuration of the multi-partition light-adjustable film / glass, which is a well-known technology for those skilled in the art and will not be described here.

[0123] Further, the touch detection module is configured with a group of shielding signal terminals and a plurality of groups of detection signal terminals, the group of shielding signal terminals is signal connected with the common conductive layer in the multi-partition light-adjustable film / glass through a shielding signal channel, and the plurality of groups of detection signal terminals are respectively signal connected with each partition conductive layer in the multi-partition light-adjustable film / glass through a detection signal channel. Here, the number of detection signal terminals is corresponding to the number of partition conductive layers in the multi-partition light-adjustable film / glass.

[0124] In this way, the touch detection module is configured to generate a plurality of groups of detection signals, and the plurality of groups of detection signals are respectively transmitted to each partition conductive layer in the multi-partition light-adjustable film / glass through the plurality of groups of detection signal terminals, so that each partition conductive layer in the multi-partition light-adjustable film / glass and the body ground of the bearing body form a corresponding capacitance model;

[0125] At the same time, the touch detection module is configured to generate a group of shielding signals, and the group of shielding signals is transmitted to the common conductive layer in the multi-partition light-adjustable film / glass through the shielding signal terminal, so as to configure the common conductive layer as a shielding layer.

[0126] For other configurations and running processes of the touch control system scheme based on light-adjustable glass / film for multi-partition light-adjustable glass / film given in this embodiment, same as Embodiment 1, which will not be described here.

[0127] In this way, the touch control system scheme based on light-adjustable glass / film given in this embodiment can realize touch detection of the multi-partition light-adjustable film / glass (for details, please refer to Embodiment 1, which will not be described here), that is, the corresponding touch control function is integrated on the multi-partition light-adjustable film / glass.

[0128] Here, the conductive layer is preferably an ITO conductive layer.

[0129] As an example, the touch control system scheme based on light-adjustable glass / film given in this embodiment can realize haze adjustment of the corresponding partition through touch of different partitions in specific application, and also can realize certain gesture recognition to execute different haze adjustment or other functions through simultaneous or sequential touch of different partitions.

[0130] In addition, the pair of multi-zone light control glass / film based touch control system scheme of the present example can be applied to vehicles to achieve light control, and can also be applied to building industry glass curtain walls to achieve light control.

[0131] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A touch system based on light-adjustable glass / film, comprising a light-adjustable glass / film, a light-adjustable driving module; characterized in that, a first conductive layer and a second conductive layer in the light-adjustable glass / film are arranged to form corresponding first and second capacitance models with the body of a system carrying body; the touch system based on light-adjustable glass / film further comprises a touch detection module configured to generate a detection signal and a shielding signal; the touch detection module transmits the detection signal to the first conductive layer and is configured to monitor the change of the first capacitance model when it changes, and the change of the current formed in the loop between the touch detection module and the first capacitance model, and form a touch detection signal according to the monitored current change information; the touch detection module transmits the shielding signal to the second conductive layer and is configured to compensate for the change of the second capacitance model when it changes. 2.The light control glass / film based touch system according to claim 1, wherein, The touch detection module and the light-adjustable driving module are electrically isolated.

3. The dimming glass / film based touch system according to claim 1, wherein, The light-adjustable driving module is electrically isolated with the body of the system carrying body.

4. The dimming glass / film based touch system according to claim 1, wherein, The touch detection module is electrically isolated with the connected conductive layer.

5. The dimming glass / film based touch system according to claim 4, wherein, The touch detection module and the connected conductive layer are connected by one-way isolation or capacitive isolation. 6.The light control glass / film based touch system according to claim 1, wherein, The first conductive layer in the light-adjustable glass / film comprises a single conductive area or multiple conductive sub-areas.

7. The dimming glass / film based touch system according to claim 6, wherein, When the conductive layer comprises multiple conductive sub-areas, each conductive sub-area is connected to the touch detection module and can form a corresponding capacitance model.

8. A touch control method based on light-adjustable glass / film, characterized in that, The control method comprises: based on the conductive layer in the light-adjustable glass / film, a corresponding capacitance model is formed between the light-adjustable glass / film and the body of the carrying body; based on the formed capacitance model, a corresponding monitoring loop is formed, which can generate current when the capacitance model changes; when the light-adjustable glass / film is touched, the change of the current generated in the monitoring loop is monitored, and a touch detection signal is formed according to the monitored current change information. 9.The dimming glass / film-based touch control method according to claim 8, wherein, The control method monitors the monitoring loop formed by the capacitance model based on a group of conductive layers in the light-adjustable glass / film through the detection signal, and shields the capacitance model formed by another group of conductive layers in the light-adjustable glass / film through the shielding signal.

10. Vehicle, characterized in that The vehicle is provided with the touch system based on light-adjustable glass / film according to any one of claims 1-7.

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