Touch device, display system, and display
By introducing an optical path conversion module and a light receiver into the touch device, changes in light are detected to identify touch actions, solving the problems of slow iteration, poor stability, and dependence on accessories in traditional touch technology, and achieving a more sensitive and stable touch effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGZHOU SHIYUAN ELECTRONICS CO LTD
- Filing Date
- 2021-11-12
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional touch technologies have drawbacks that affect touch performance, including slow iteration and high assembly requirements for infrared touch, poor stability of capacitive touch, and the need for accessories to work with electromagnetic touch.
A touch device is provided, including a control system and N touch units. The device changes the propagation state of light through an optical path conversion module, uses a light receiver to detect the light change and generate a feedback signal, and the control system analyzes and identifies the touch action, thus solving the above-mentioned problems of traditional touch technology.
It improves touch performance, solves the problems of slow iteration of infrared touch, poor stability of capacitive touch, and the need for accessories to cooperate with electromagnetic touch, and provides a more sensitive and stable touch solution.
Smart Images
Figure CN116126171B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of touch technology, and in particular to a touch device, display system and display. Background Technology
[0002] With the continuous development of display technology, touch screens have become the mainstream, and mainstream touch technologies are generally divided into three types: infrared, capacitive, and electromagnetic. Among them, infrared touch technology works by using infrared diodes to transmit light and achieve touch control. Infrared emitters and receivers form a matrix. When an object blocks the light emitted by the emitter, the signal received by the receiver changes, thereby locating the touch position. However, this infrared touch frame technology has the following problems: slow iteration and high requirements for structural assembly, especially the flatness of the glass surface.
[0003] The principle of capacitive touch technology is that the main control chip continuously sends high-frequency signals to the working plane, and continuously calculates the amount of charge through the capacitor in the plane. The human hand itself carries a charge. When the human hand touches the plane, an additional capacitor is introduced, causing the amount of charge on the plane to change. This determines whether there is a touch. However, capacitive touch frames have the following problems: because the spatial environment can easily generate signals that interfere with the charge, the stability of capacitive touch is poor.
[0004] The principle of electromagnetic touch technology is to determine the position and touch by constantly exchanging electromagnetic wave signals with the sensors inside the touch frame through an active electromagnetic pen. However, electromagnetic touch technology has the following problems: it requires the cooperation of an electromagnetic pen, and touch can not be achieved by human hand or pure structural pen alone.
[0005] Therefore, during the implementation process, the inventors discovered at least the following problems in the traditional technology: the traditional touch technology has defects that affect the touch performance. Summary of the Invention
[0006] Therefore, it is necessary to address the shortcomings of traditional touch technology that affect touch performance by providing a touch device, display system, and monitor.
[0007] To achieve the above objectives, in a first aspect, embodiments of this application provide a touch device, including a control system and N touch units; each touch unit includes a trigger module, an optical path conversion module, an optical emitter, and an optical receiver; the optical path conversion module is disposed between the optical emitter and the optical receiver; when the trigger module receives a pressure signal, it applies a trigger signal to the optical path conversion module; the optical path conversion module changes the propagation state of the light emitted from the optical emitter in response to the trigger signal; the optical receiver detects the change in the propagation state of the light, generates a corresponding feedback signal, and transmits the feedback signal to the control system; the control system analyzes the feedback signal and identifies the touch action corresponding to the pressure signal.
[0008] Optionally, the trigger signal is a voltage signal; the optical path conversion module is filled with randomly arranged electrical material particles; the electrical material particles respond to the voltage signal and change from a random arrangement to an ordered arrangement, so that the propagation state of light changes from an blocked state to a passing state; the optical receiver detects the change in the propagation state of light based on whether or not light is received.
[0009] Optionally, the touch unit also includes a polarizer; the polarizer is located between the optical path conversion module and the optical receiver; the propagation state of the light is the polarization direction of the light.
[0010] Optionally, the trigger signal is a voltage signal; the optical path conversion module is filled with electrical material particles arranged in a first direction; the first direction forms a first angle with the polarization direction of the analyzer; the electrical material particles respond to the voltage signal and arrange themselves in a second direction to change the polarization direction of the light; the second direction arrangement forms a second angle with the polarization direction of the analyzer; the first angle and the second angle are different; the optical receiver detects the change in the propagation state of the light based on the change in the intensity of the received light.
[0011] Optionally, the first included angle is 0 degrees; the second included angle is 90 degrees; or, the first included angle is 90 degrees; the second included angle is 0 degrees.
[0012] Optionally, the touch device also includes row wires and column wires; the control system supplies power to the trigger module through the row wires; and the light receiver transmits feedback signals to the control system through the column wires.
[0013] Optionally, the touch device also includes a power supply cable; the control system supplies power to the light emitter via the power supply cable.
[0014] Optionally, the optical path conversion module includes a movable module with a through hole and an elastic element; the movable module and the elastic element are mechanically connected; the trigger signal is a pressure signal; the elastic element compresses and deforms in response to the pressure signal, driving the movable module to move, thereby changing the propagation state of the light emitted by the optical emitter.
[0015] Optionally, before receiving a pressure signal, light passes through the through-hole to penetrate the moving module and illuminate the light receiver; after receiving the pressure signal, the moving module moves, and the light is blocked by the moving module; the light receiver detects the change in the propagation state of the light based on whether or not it receives the light.
[0016] Optionally, before receiving a pressure signal, the light is blocked by the moving module; after receiving the pressure signal, the moving module moves, and the light passes through the through-hole to the moving module and illuminates the light receiver; the light receiver detects the change in the propagation state of the light based on whether or not it receives the light.
[0017] Optionally, the touch device may also include column wires; the light receiver transmits feedback signals to the control system through the column wires.
[0018] Optionally, the touch device also includes a power supply cable; the control system supplies power to the light emitter via the power supply cable.
[0019] Secondly, embodiments of this application provide a display device, including a glass protective layer, a display panel, a back plate, a housing, and a touch device as described above; the glass protective layer, the touch device, the display panel, and the back plate are stacked sequentially; the glass protective layer, the touch device, the display panel, and the back plate are encapsulated within a cavity formed by the housing.
[0020] This application provides a touch device including a control system and N touch units. When a trigger module in each touch unit receives a pressure signal, it applies a trigger signal to a light path conversion module. The light path conversion module responds to the trigger signal by changing the propagation state of the light emitted from the light emitter. The light receiver detects the change in the propagation state of the light, generates a corresponding feedback signal, and transmits the feedback signal to the control system. The control system analyzes the feedback signal and identifies the touch action corresponding to the pressure signal. Thus, this application provides a novel touch device structure to achieve touch control, solving the problems of slow iteration and high assembly requirements of infrared touch, poor stability of capacitive touch, and the need for accessories in electromagnetic touch. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of a touch device provided in an embodiment of this application.
[0022] Figure 2 A schematic diagram illustrating the light-blocking principle of a touch unit structure provided in an embodiment of this application.
[0023] Figure 3 A schematic diagram of the light transmission principle of a touch unit structure provided for the implementation of this application.
[0024] Figure 4 A schematic diagram of the light transmission principle of another structure of the touch unit provided for implementation of this application.
[0025] Figure 5 A schematic diagram of the light transmission principle of another structure of the touch unit provided for implementation of this application.
[0026] Figure 6 A schematic diagram of the optical principle of a polarizer for a touch unit structure provided for implementation of this application.
[0027] Figure 7 A schematic diagram of the principle of the polarizer blocking light in a touch unit structure provided for the implementation of this application.
[0028] Figure 8 The detector of another structure of the touch unit provided for implementation of this application is shown in the light principle diagram.
[0029] Figure 9 A schematic diagram of the polarizer blocking light in a touch unit with another structure provided for implementation of this application.
[0030] Figure 10 A schematic diagram of the structure of the touch unit provided for the implementation of this application.
[0031] Figure 11 A schematic diagram of the display system provided for the implementation of this application.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Touch device; 11. Control system; 13. Touch unit; 131. Trigger module; 1331. Motion module; 1333. Elastic element; 133. Optical path conversion module; 135. Optical transmitter; 137. Optical receiver; 139. Analyzer; 15. Row conductor; 17. Column conductor; 2. Display screen. Detailed Implementation
[0034] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate preferred embodiments of the application. However, this application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0035] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0037] This application provides a touch device 1 to solve the problem of defects in traditional touch technology that affect touch performance. The following description is in conjunction with the accompanying drawings.
[0038] like Figure 1 As shown, the touch device 1 includes a control system 11 and N touch units 13.
[0039] The control system 11 provides control and processing capabilities for the touch device 1. For example, after receiving feedback signals from the touch unit 13, the control system 11 analyzes and processes the feedback signals to identify the touch actions applied to the touch device 1. In one example, the control system 11 may be a system-on-a-chip (SoC), without specific limitations.
[0040] Touch unit 13 is used to detect pressure signals, generate feedback signals in response to pressure signals, and send the feedback signals to control system 11. The number of touch units 13 is N, which can be set according to the size of touch device 1. For example, N can be one hundred, one thousand, or ten thousand, and there is no specific limitation. Touch units 13 are laid inside touch device 1, and each touch unit 13 uniquely corresponds to a position information (this position information is determined with touch device 1 as the reference frame). Touch unit 13 sends feedback information to control system 11 in response to pressure signals. Control system 11 analyzes the feedback information to obtain the position information of the touch unit 13 that was triggered by the pressure signal. Control system 11 identifies the touch action applied to touch device 1 based on the analyzed position information.
[0041] For example, such as Figure 3 As shown, the touch unit 13 includes a trigger module 131, an optical path conversion module 133, an optical transmitter 135, and an optical receiver 137.
[0042] The trigger module 131 is disposed on one side of the optical path conversion module 133 (this side is opposite to the touch surface of the touch device 1). The trigger module 131 is used to apply a trigger signal to the optical path conversion module 133 when a pressure signal is received. It should be noted that the pressure signal is the pressure applied to the touch device 1 by the user when the touch device 1 is operated. For example, the user can apply pressure to the touch device 1 with a finger or a stylus, and there is no specific limitation on this. The trigger signal can be set according to the specific implementation of the optical path conversion module 133. For example, the trigger signal can be a voltage signal or a pressure signal, and there is no specific limitation on this.
[0043] Depending on the connection relationship between the trigger module 131 and the optical path conversion module 133, at least two methods can be used: In one example, the trigger module 131 can be directly connected to the optical path conversion module 133. When the trigger module 131 detects a pressure signal, it directly applies a trigger signal to the optical path conversion module 133. In another example, the trigger module 131 and the optical path conversion module 133 are not connected. When the trigger module 131 detects a pressure signal, it moves towards the optical path conversion module 133. When the trigger module 131 contacts the optical path conversion module 133, it applies a trigger signal to the optical path conversion module 133.
[0044] After the trigger module 131 applies a trigger signal to the optical path conversion module 133, the optical path conversion module 133 responds to the trigger signal and changes the propagation state of the light from the light emitter 135, so that the light received by the light receiver 137 changes. To achieve the above-mentioned propagation mode of light, structurally, the optical path conversion module 133 is located between the light emitter 135 and the light receiver 137. The light emitted from the light emitter 135 is processed by the optical path conversion module 133 and propagates to the light receiver 137. It should be noted that the propagation state can be the on / off state of the light, the intensity of the light, the composition of the light, or the polarization direction of the light, which can be set according to the specific structure of the optical path conversion module 133 and is not specifically limited thereto.
[0045] The following example illustrates the implementation of the optical path transformation module 133 when the propagation state is the on / off state of light.
[0046] In one example, such as Figure 2 and 3 As shown, the optical path conversion module 133 is filled with randomly arranged electrical material particles. The arrangement direction of these electrical material particles is affected by voltage. Without voltage, the particles are randomly arranged. With voltage applied, they are arranged in an ordered manner. The propagation state of light is changed by altering the arrangement of the electrical material particles. Specifically, the randomly arranged electrical material particles block light emitted from the light emitter 135, i.e., the light propagation state is blocked. The ordered arrangement of the electrical material particles allows light emitted from the light emitter 135 to pass through, i.e., the light propagation state is through. At this time, the trigger signal is a voltage signal. A voltage signal is applied to the optical path conversion module 133 via the trigger module 131. Upon receiving the voltage signal, the electrical material particles change from a random arrangement to an ordered arrangement, allowing light emitted from the light emitter 135 to pass through the optical path conversion module 133 and illuminate the light receiver 137, i.e., the light propagation state changes from blocked to through. The electrical material particles can be selected from materials possessing the aforementioned electrical and optical properties; for example, the electrical material particles are liquid crystal particles.
[0047] For example, the optical path conversion module 133 includes a closed housing with a cavity filled with randomly arranged electrical material particles. The first side of the closed housing relative to the light emitter 135 and the second side relative to the light receiver 137 are formed of a light-transmitting material. The third side of the closed housing relative to the trigger module 131 and the fourth side opposite to the third side are formed of a conductive material. After receiving a voltage signal, the optical path conversion module 133 forms an electric field between the third and fourth sides of the closed housing, causing the electrical material particles to change from a disordered arrangement to an ordered arrangement.
[0048] Based on the implementation of the optical path transformation module 133 in this example, such as Figure 10As shown, the touch device 1 may further include row conductors 15 and column conductors 17. One end of the row conductor 15 is electrically connected to the control system 11, and the trigger module 131 is electrically connected to the row conductor 15. The control system 11 transmits voltage signals to the trigger module 131 through the row conductor 15. One end of the column conductor 17 is electrically connected to the control system 11, and the light receiver 137 is electrically connected to the column conductor 17. The light receiver 137 transmits feedback signals to the processing system through the column conductor 17. In this example, the touch module may be made of conductive material, equivalent to a conductive contact electrically connected to the row conductor 15.
[0049] The arrangement of the touch unit 13, row guides 15, and column guides 17 can be determined according to actual needs. In one example, such as Figure 10 As shown, N trigger units are arranged in a matrix, for example, in a square matrix, without specific limitation. A row guide 15 is arranged between each row of the matrix, and a row guide 15 is arranged on one side of the matrix opposite to a row. A column guide 17 is arranged between each column of the matrix, and a column guide 17 is arranged on one side of the matrix opposite to a column.
[0050] The control system 11 is an embodiment of a system-on-a-chip (SoC). The SoC includes GPIO (General-purpose input / output) ports, with row wires 15 and column wires 17 both connected to the GPIO interfaces. The SoC cyclically outputs a VCC voltage to each row wire 15, and acquires the feedback signal from the optical receiver 137 in real time via the column wires 17.
[0051] In another example, such as Figure 4 and 5As shown, the optical path conversion module 133 includes a movable module 1331 with a through hole and an elastic element 1333. The movable module 1331 is mechanically connected to the elastic element 1333. The central axis of the through hole on the movable module 1331 is parallel to the light emitted from the light emitter 135. When the movable module 1331 moves to a suitable position, the light emitted from the light emitter 135 can pass through the through hole on the movable module 1331 and illuminate the light receiver 137. The elastic element 1333 is a compressible device under pressure; for example, it can be an elastic diaphragm, a bellows, or a Bourdon tube, without specific limitation. In this example, the touch signal is a pressure signal. The trigger module 131 transmits the received pressure signal to the movable module 1331. Under the pressure signal, the movable module 1331 squeezes the elastic element 1333, causing the elastic element 1333 to contract and move the movable module 1331. When the through-hole on the moving module 1331 is not aligned with the light emitted from the light emitter 135, the moving module 1331 blocks the light, meaning the light propagation state is blocked. When the through-hole on the moving module 1331 is aligned with the light emitted from the light emitter 135, the light passes through the through-hole and through the moving module 1331, meaning the light propagation state is through. This allows the moving module 1331 to move via a pressure signal, thereby changing the propagation state of the light emitted from the light emitter 135.
[0052] Based on the initial position of the moving module 1331, there are at least two ways to change the propagation state of the light.
[0053] In one approach, such as Figure 4 As shown, the initial position of the moving module 1331 is such that the light emitted from the light emitter 135 is aligned with the through-hole on the moving module 1331, allowing the light to pass through the through-hole into the moving module 1331. Before receiving a pressure signal, the light passes through the through-hole into the moving module 1331 and illuminates the light receiver 137. After receiving the pressure signal, the trigger module 131 transmits the pressure signal to the moving module 1331, which in turn transmits the pressure signal to the elastic member 1333. The elastic member 1333 compresses and deforms in response to the pressure signal, causing the moving module 1331 to move. The through-hole on the moving module 1331 changes from aligning the light to disaligning the light, thus blocking the light from the moving module 1331. The light receiver 137 detects changes in the propagation state of light based on whether or not light is received. Specifically, before receiving a pressure signal, the light receiver 137 can receive light. After receiving a pressure signal, the light receiver 137 does not receive light and detects that the propagation state of light has changed from a passing state to a blocked state. After detecting the change in the propagation state of light, the light receiver 137 generates a feedback signal.
[0054] In another way, such as Figure 5As shown, the initial position of the moving module 1331 is such that the through-hole on the moving module 1331 is not aligned with the light emitted from the light emitter 135, causing the light to be blocked by the moving module 1331. Before receiving the pressure signal, the light emitted from the light emitter 135 is blocked by the moving module 1331. After receiving the pressure signal, the trigger module 131 transmits the pressure signal to the moving module 1331, which in turn transmits the pressure signal to the elastic member 1333. The elastic member 1333 compresses and deforms in response to the pressure signal, causing the moving module 1331 to move, so that the through-hole on the moving module 1331 aligns with the light emitted from the light emitter 135, thereby allowing the light to pass through the through-hole and illuminate the light receiver 137. The light receiver 137 detects changes in the propagation state of light based on whether or not light is received. Specifically, before receiving the pressure signal, the light receiver 137 does not receive light. After receiving the pressure signal, the light receiver 137 can receive light and detects that the propagation state of light has changed from an blocked state to a passing state. After detecting the change in the propagation state of light, the light receiver 137 generates a feedback signal.
[0055] Based on the implementation of the optical path conversion module 133 in this example, the touch device 1 may also include column conductors 17. One end of the column conductor 17 is electrically connected to the control system 11, and the optical receiver 137 is electrically connected to the column conductor 17. The optical receiver 137 transmits feedback signals to the processing system through the column conductor 17. In this example, the touch module can be made of a rigid material. The arrangement of the touch units 13 and the column conductors 17 can be determined according to actual needs. In one example, N trigger units are arranged in a matrix, for example, in a square matrix; no specific limitation is made thereto. A column conductor 17 is arranged between each column of the matrix, and a column conductor 17 is arranged on one side of the matrix opposite to a column.
[0056] The following example illustrates the implementation of the optical path transformation module 133 when the propagation state is the polarization direction of the light.
[0057] like Figures 6 to 9 As shown, the touch unit 13 may also include a polarizer 139. The polarizer 139 is disposed between the optical path conversion module 133 and the optical receiver 137. In this example, the optical path conversion module 133 is used to change the polarization direction from the optical emitter 135.
[0058] Specifically, when the trigger module 131 receives a pressure signal, it applies a trigger signal to the optical path conversion module 133. Upon receiving the trigger signal from the trigger module 131, the optical path conversion module 133 responds by changing the polarization direction of the light emitted from the light emitter 135. Because the polarization direction of the light emitted from the light emitter 135 changes before and after receiving the pressure signal, and then after passing through the analyzer 139, the intensity of the light illuminating the light receiver 137 changes. The light receiver 137 detects this change in light intensity and generates a feedback signal.
[0059] To achieve the aforementioned function of changing the polarization direction of light, for example, the optical path conversion module 133 is filled with electrically conductive material particles arranged in a first direction. It should be noted that the first direction forms a first angle with the polarization direction of the analyzer 139.
[0060] When the trigger module 131 receives a pressure signal, it applies a voltage signal to the optical path conversion module 133. The electrical material particles within the optical path conversion module 133 respond to the voltage signal and align in a second direction to change the polarization direction of the light. It should be noted that this second-direction alignment forms a second angle with the polarization direction of the analyzer 139. To ensure that the intensity of the light illuminating the light receiver 137 changes after passing through the analyzer 139, the first and second angles are different. The light receiver 137 detects changes in the propagation state of the light based on the change in the intensity of the received light.
[0061] To make the touch device 1 more sensitive, two feasible methods for the optical path conversion module 133 to change the polarization direction of light are introduced below.
[0062] One method: such as Figure 6 and 7As shown, the first included angle is 0 degrees, and the second included angle is 90 degrees. The optical path conversion module 133 is filled with electrically conductive material particles arranged in a first direction, which is the same as the polarization direction of the analyzer 139 (i.e., the first included angle is 0 degrees). The arrangement direction of these electrically conductive material particles is affected by voltage. When no voltage is applied, the electrically conductive material particles are arranged in the first direction. This is achieved by the optical path conversion module 133 including a housing, on which the first direction, the same as the polarization direction of the analyzer 139, is pre-etched, so that the electrically conductive material particles are arranged in the first direction. In this example, the trigger signal is a voltage signal. When the optical path conversion module 133 does not receive a voltage signal, the electrically conductive material particles are arranged in the first direction. The polarization direction of the light passing through these electrically conductive material particles is the same as the polarization direction of the analyzer 139, allowing the light to pass through the analyzer 139. When the electrical material particles receive a voltage signal, they are arranged in a second direction to change the polarization direction of the light emitted by the light emitter 135. The second direction is perpendicular to the polarization direction of the analyzer 139 (i.e., the second angle is 90 degrees), so that the polarization direction of the light passing through the electrical material particles arranged in the first direction is perpendicular to the polarization direction of the analyzer 139, and the light is blocked by the analyzer 139.
[0063] Another way: such as Figure 8 and 9 As shown, the first included angle is 90 degrees, and the second included angle is 0 degrees. The optical path conversion module 133 is filled with electrically conductive material particles arranged in a first direction, which is perpendicular to the polarization direction of the analyzer 139 (i.e., the first included angle is 90 degrees). The arrangement direction of these electrically conductive material particles is affected by voltage. When no voltage is applied, the electrically conductive material particles are arranged in the first direction. This is achieved by the optical path conversion module 133 including a housing, on which the first direction, identical to the polarization direction of the analyzer 139, is pre-etched, causing the electrically conductive material particles to be arranged in the first direction. In this example, the trigger signal is a voltage signal. When the optical path conversion module 133 does not receive a voltage signal, the electrically conductive material particles are arranged in the first direction. The polarization direction of the light passing through these particles is perpendicular to the polarization direction of the analyzer 139, and the light is blocked by the analyzer 139. When the electrical material particles receive a voltage signal, they are arranged in a second direction to change the polarization direction of the light emitted by the light emitter 135. The second direction is the same as the polarization direction of the analyzer 139 (i.e., the second included angle is 0 degrees), so that the polarization direction of the light passing through the electrical material particles arranged in the second direction is the same as the polarization direction of the analyzer 139, and the light can pass through the analyzer 139.
[0064] A light emitter 135 and a light receiver 137 are distributed opposite each other on both sides of the optical path conversion module 133. The light emitter 135 is used to emit light. The light receiver 137 is used to generate a feedback signal when a change in the propagation state of the light is detected, and transmits the feedback signal to the receiver. In one example, the emitter can be an infrared light emitter 135, a red light emitter 135, or a green light emitter 135; there is no specific limitation on this. Similarly, the type of light receiver 137 corresponds to the type of light emitter 135.
[0065] To ensure power supply to the light emitter 135, in one example, the touch device 1 also includes a power supply wire. One end of the power supply wire is connected to the control system 11, which supplies power to the light emitter 135 via the power supply wire. The arrangement of the touch unit 13 and the power supply wire can be determined according to actual needs. In one example, N trigger units are arranged in a matrix, for example, in a square matrix, without specific limitations. The power supply wire can be placed between rows or columns of the matrix.
[0066] The aforementioned touch device 1 includes a control system 11 and N touch units 13. When a pressure signal is received, the trigger module 131 in each touch unit 13 applies a trigger signal to the light path conversion module 133. The light path conversion module 133 responds to the trigger signal by changing the propagation state of the light emitted from the light emitter 135. The light receiver 137 detects the change in the propagation state of the light, generates a corresponding feedback signal, and transmits the feedback signal to the control system 11. The control system 11 analyzes the feedback signal and identifies the touch action corresponding to the pressure signal. Thus, this application provides a novel touch device 1 to achieve touch control, which can solve the problems of slow iteration and high assembly requirements of infrared touch, the problem of poor stability of capacitive touch, and the problem of requiring accessories for electromagnetic touch.
[0067] The touch device 1 provided in this application can be used as a standalone product for touch operation of the display screen 2. Therefore, this application provides a display system, such as... Figure 11 As shown, it includes a display screen 2 and a touch device 1.
[0068] Touch device 1 is electrically connected to display screen 2. Exemplarily, the control system 11 of touch device 1 is electrically connected to the controller of display screen 2. It should be noted that a detailed description of touch device 1 is provided in the various embodiments of touch device 1 of this application, and will not be repeated here.
[0069] The touch device 1 transmits the recognized touch action to the display screen 2. After receiving the touch action, the display screen 2 executes the content of the touch action.
[0070] The touch device 1 provided in this application can also be embedded in a display and used as a complete product with the display. To this end, this application provides a display device, including a glass protective layer, a display panel, a back plate, a housing, and the touch device as described above.
[0071] Specifically, the glass protective layer, touch device, display panel, and back panel are stacked sequentially. Furthermore, the glass protective layer, touch device, display panel, and back panel are encapsulated within a cavity formed by the outer casing.
[0072] It should be noted that the specific description of the touch device 1 is as described in the various embodiments of the touch device 1 of this application, and will not be repeated here. The display panel is used to display content. The control device is the control center of the display, providing control and processing capabilities.
[0073] The glass protective layer provides protection for touch devices, display panels, and other components. For example, the glass protective layer may be made of sodium silicate glass; this embodiment does not specifically limit its application. The display panel is used to display content; for example, the display panel may be an LCD (Liquid Crystal Display) panel or an LED (Light Emitting Diode) panel; this embodiment does not specifically limit its application. The backplate is an integrated circuit board used to mount and support various components of the display device. The outer casing provides physical protection for the display device.
[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A touch device, characterized in that, Includes a control system and N touch units; The touch unit includes a trigger module, an optical path conversion module, an optical emitter, and an optical receiver; the optical path conversion module is located between the optical emitter and the optical receiver. When the triggering module receives a pressure signal, it applies a trigger signal to the optical path conversion module. The optical path conversion module changes the propagation state of the light emitted from the optical emitter in response to the trigger signal; The optical receiver detects changes in the propagation state of the light, generates a corresponding feedback signal, and transmits the feedback signal to the control system. The control system analyzes the feedback signal and identifies the touch action corresponding to the pressure signal; The touch unit also includes a polarizer; the polarizer is located between the optical path conversion module and the optical receiver; the propagation state of the light is the polarization direction of the light. The trigger signal is a voltage signal; the optical path conversion module is filled with electrical material particles arranged in a first direction; the first direction forms a first angle with the polarization direction of the analyzer; The electrical material particles align in a second direction in response to the voltage signal to change the polarization direction of the light; the second direction alignment forms a second angle with the polarization direction of the analyzer; the first angle and the second angle are different. The optical receiver detects changes in the propagation state of the light based on changes in the intensity of the received light.
2. The touch device according to claim 1, characterized in that, The trigger signal is a voltage signal; the optical path conversion module is filled with randomly arranged electrical material particles; The electrical material particles respond to the voltage signal by changing from a random arrangement to an ordered arrangement, thereby changing the propagation state of the light from an blocked state to a passing state; The optical receiver detects changes in the propagation state of the light based on whether or not it receives the light.
3. The touch device according to claim 1, characterized in that, The first included angle is 0 degrees; the second included angle is 90 degrees; Alternatively, the first included angle is 90 degrees; the second included angle is 0 degrees.
4. The touch device according to any one of claims 1 to 3, characterized in that, The touch device also includes row wires and column wires; The control system transmits the voltage signal to the trigger module through the row conductor; the optical receiver transmits the feedback signal to the control system through the column conductor.
5. The touch device according to claim 4, characterized in that, The touch device also includes a power supply wire; The control system supplies power to the light transmitter via the power supply wire.
6. The touch device according to claim 1, characterized in that, The optical path conversion module includes a movable module with a through hole and an elastic element; the movable module is mechanically connected to the elastic element. The trigger signal is the pressure signal; The elastic element compresses and deforms in response to the pressure signal, causing the moving module to move and change the propagation state of the light emitted by the light emitter.
7. The touch device according to claim 6, characterized in that, Before receiving the pressure signal, the light passes through the through hole into the moving module and illuminates the light receiver; Upon receiving the pressure signal, the moving module moves, and the light is blocked by the moving module; The optical receiver detects changes in the propagation state of the light based on whether or not it receives the light.
8. The touch device according to claim 6, characterized in that, Before receiving the pressure signal, the light was blocked by the moving module; Upon receiving the pressure signal, the moving module moves, and the light passes through the through hole and illuminates the light receiver. The optical receiver detects changes in the propagation state of the light based on whether or not it receives the light.
9. The touch device according to any one of claims 6 to 8, characterized in that, The touch device also includes a column of wires; The optical receiver transmits the feedback signal to the control system through the column of wires.
10. The touch device according to claim 9, characterized in that, The touch device also includes a power supply wire; The control system supplies power to the light transmitter via the power supply wire.
11. A display device, characterized in that, Includes a glass protective layer, a display panel, a back plate, a housing, and a touch device as described in any one of claims 1-10; The glass protective layer, the touch device, the display panel, and the back plate are stacked sequentially. The glass protective layer, the touch device, the display panel, and the back plate are encapsulated within the cavity formed by the outer casing.