Piezoelectric ceramic-based sliding strip panel with tactile feedback

Abstract

The utility model relates to the technical field of man-machine interaction equipment, in particular to a sliding strip panel with tactile feedback based on piezoelectric ceramics, which comprises a panel body, and a sliding strip area is arranged on the surface of the panel body; the touch detection device is arranged below the panel body and is used for detecting the touch position and the sliding track of the sliding strip area; the piezoelectric ceramic pieces are arranged below the panel body and located below the sliding strip area; the control circuit is electrically connected with the touch detection device and the piezoelectric ceramic pieces, and the corresponding piezoelectric ceramic pieces are controlled to vibrate according to the touch positions and the sliding tracks. According to the utility model, the plurality of piezoelectric ceramic pieces along the sliding strip area are arranged to provide tactile feedback, and the sliding position and track of a user are determined in combination with the touch detection device, so that the piezoelectric ceramic pieces in the corresponding areas are driven to vibrate, and different tactile feedback effects are realized.

Description

Technical Field

[0001] This utility model relates to the field of human-computer interaction equipment technology, and in particular to a slider panel with tactile feedback based on piezoelectric ceramics. Background Technology

[0002] Existing slider panels primarily employ resistive and capacitive touch technologies, allowing users to input data by sliding their fingers. However, these traditional slider panels typically lack effective haptic feedback, making it difficult for users to obtain clear feedback on the sliding position or pressure, thus affecting the accuracy of operation and the user experience. Therefore, there is an urgent need for a slider panel that can provide haptic feedback to enhance the user interaction experience.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] This invention provides a slider panel with tactile feedback based on piezoelectric ceramics, thereby effectively solving the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a slider panel with tactile feedback based on piezoelectric ceramics, comprising:

[0006] A panel body, the surface of which is provided with a sliding strip area;

[0007] A touch detection device is disposed under the panel body to detect the touch position and sliding trajectory of the slider area;

[0008] A plurality of piezoelectric ceramic sheets are disposed below the panel body and located below the slider area;

[0009] A control circuit is electrically connected to the touch detection device and a plurality of piezoelectric ceramic sheets, and controls the corresponding piezoelectric ceramic sheets to vibrate according to the touch position and sliding trajectory.

[0010] Furthermore, several piezoelectric ceramic sheets are arranged in parallel along the slider region.

[0011] Furthermore, the control circuit includes a microcontroller, a drive circuit, and a power supply. The microcontroller receives the input signal from the touch detection device and controls the drive circuit to apply voltage to the piezoelectric ceramic sheet, thereby driving the piezoelectric ceramic sheet to generate vibration feedback.

[0012] Furthermore, each of the piezoelectric ceramic sheets is provided with a driving circuit, and the driving circuit independently drives the corresponding piezoelectric ceramic sheet.

[0013] Furthermore, the touch detection device includes a capacitive touch sensor and / or an optical sensor.

[0014] Furthermore, the touch detection device also includes a pressure sensor and / or an acceleration sensor.

[0015] Furthermore, the panel body includes:

[0016] An external protective layer is disposed on the outer layer of the panel body;

[0017] A touch interaction layer is disposed within the outer protective layer, and the touch detection device is disposed within the touch interaction layer;

[0018] A flexible substrate layer is disposed within the touch interaction layer, and a plurality of piezoelectric ceramic sheets are disposed on the flexible substrate layer.

[0019] Furthermore, the flexible substrate layer is a flexible printed circuit board (FPC).

[0020] The beneficial effects of this invention are as follows: By setting multiple piezoelectric ceramic sheets along the slider area to provide tactile feedback, and combining this with a touch detection device to determine the user's sliding position and trajectory, the corresponding piezoelectric ceramic sheets in the area are driven to vibrate. Piezoelectric ceramics have a fast vibration response speed, providing instant feedback and improving the user experience. Compared to electromagnetic and force feedback, piezoelectric feedback consumes less energy, making it suitable for portable devices or low-power scenarios. It can dynamically adjust the vibration mode according to the user's touch position and sliding trajectory, achieving different tactile feedback effects such as "scale feel" and "damping feel." Furthermore, the piezoelectric ceramic sheets are relatively thin, allowing for easy integration under the slider panel without affecting the overall panel design. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is an exploded view of the present invention;

[0023] Figure 2 A front view of multiple piezoelectric ceramic sheets;

[0024] Figure 3 This is the topology diagram of the control circuit;

[0025] Figure 4 This is an exploded view of the panel itself. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] like Figures 1 to 4 As shown: A slider panel with haptic feedback based on piezoelectric ceramics, comprising:

[0028] Panel body 1, the surface of panel body 1 is provided with a sliding strip area;

[0029] Touch detection device 2 is disposed under panel body 1 to detect the touch position and sliding trajectory of the slider area;

[0030] A plurality of piezoelectric ceramic sheets 3 are disposed below the panel body 1 and located below the slider area;

[0031] The control circuit 4 is electrically connected to the touch detection device 2 and several piezoelectric ceramic sheets 3, and controls the corresponding piezoelectric ceramic sheets 3 to vibrate according to the touch position and sliding trajectory.

[0032] Tactile feedback is provided by setting multiple piezoelectric ceramic sheets 3 along the slider area, and combined with the touch detection device 2 to determine the user's sliding position and trajectory, thereby driving the corresponding piezoelectric ceramic sheets 3 to vibrate. Piezoelectric ceramics have a fast vibration response speed, providing instant feedback and improving the user experience. Compared with electromagnetic and force feedback, piezoelectric feedback consumes less energy, making it suitable for portable devices or low-power scenarios. It can dynamically adjust the vibration mode according to the user's touch position and sliding trajectory, achieving different tactile feedback effects such as "scale feel" and "damping feel." Furthermore, the piezoelectric ceramic sheets 3 are relatively thin, allowing for easy integration under the slider panel without affecting the overall panel design.

[0033] In this embodiment, several piezoelectric ceramic sheets 3 are arranged in parallel along the slider area.

[0034] The piezoelectric ceramic sheets 3 are arranged parallel to the slider direction. The system can precisely activate the corresponding piezoelectric sheets according to the user's touch position, providing local tactile feedback so that the user can feel the subtle displacement changes during the sliding process. By controlling the vibration intensity, frequency, or mode of different piezoelectric ceramic sheets 3, a similar tactile, damping, or segmented sliding experience can be simulated, making it suitable for precise adjustment scenarios such as volume control and brightness adjustment. Since only the piezoelectric ceramic sheets 3 near the sliding trajectory need to be activated, the system does not need to continuously drive all piezoelectric sheets, thereby reducing power consumption and making it suitable for low-power devices.

[0035] The control circuit 4 includes a microcontroller 41, a drive circuit 42, and a power supply 43. The microcontroller 41 receives the input signal from the touch detection device 2 and controls the drive circuit 42 to apply voltage to the piezoelectric ceramic sheet 3, thereby driving the piezoelectric ceramic sheet 3 to generate vibration feedback.

[0036] The microcontroller 41 (MCU) processes the input signals from the touch detection device 2, identifying information such as the user's sliding position, speed, and force. The control drive circuit 42 selectively activates the corresponding piezoelectric ceramic sheet 3, providing precise vibration feedback. Employing PWM (Pulse Width Modulation) + frequency control technology, the vibration intensity and frequency are adjustable, enabling different types of tactile feedback.

[0037] The drive circuit 42 converts the low-voltage signal output by the microcontroller 41 into a drive signal (usually a high-voltage AC signal) suitable for the piezoelectric ceramic sheet 3. Using an H-bridge drive circuit 42 (such as DRV2700 or TDK PiezoHapt), it can provide high-voltage drive and support different vibration modes (such as short pulses and frequency sweeps). A boost circuit (such as a DC-DC boost module) is used to provide a more efficient piezoelectric drive voltage.

[0038] As a preferred embodiment of the above, each piezoelectric ceramic sheet 3 is provided with a driving circuit 42, and the driving circuit 42 independently drives the corresponding piezoelectric ceramic sheet 3.

[0039] Since each piezoelectric ceramic sheet 3 has an independent drive circuit 42, the microcontroller 41 can individually control the vibration intensity, frequency, and mode of each piezoelectric sheet, thereby providing more delicate tactile feedback during sliding. Different damping sensations can be provided at different sliding positions, and even multi-point vibration feedback can be simulated to enhance realism. Because the drive circuit 42 of each piezoelectric ceramic sheet 3 is independent, even if one drive circuit 42 malfunctions, it will not affect the operation of other piezoelectric sheets, enhancing system reliability. Furthermore, resonance interference is avoided, making the vibration effect of each piezoelectric sheet clearer and more controllable.

[0040] Because each piezoelectric element can be controlled independently, the system can activate specific piezoelectric elements only when necessary. For example, when the user slides the slider within a small range, only the piezoelectric elements in that area will vibrate, while the piezoelectric elements in other areas remain in standby mode, instead of making the entire slider vibrate, thereby reducing power consumption.

[0041] In this embodiment, the touch detection device 2 includes a capacitive touch sensor and / or an optical sensor.

[0042] Capacitive touch sensors can detect the position, swipe trajectory, and contact area of ​​a finger. They have low latency, provide real-time feedback on touch position, and enable continuous swipe detection. They are suitable for scenarios requiring high sensitivity. Optical sensors detect finger displacement using infrared or laser to determine touch position and swipe trajectory. They are suitable for waterproof, stain-proof, and oil-proof environments, such as industrial equipment, and are applicable to high-end smart homes and medical touch panels. They avoid physical contact damage, and different touch sensors can be selected according to different application scenarios.

[0043] As a preferred embodiment of the above, the touch detection device 2 further includes a pressure sensor and / or an acceleration sensor.

[0044] The pressure sensor can detect the amount of pressure applied by the finger, distinguishing between light touch and heavy press, and can trigger different vibration feedbacks with different pressures, such as light press providing a gentle vibration and heavy press providing a strong vibration. The accelerometer can detect the speed and direction of the finger's movement to optimize the vibration feedback. You can choose between a pressure sensor or an accelerometer to make the vibration function richer and enhance the tactile feedback experience.

[0045] In this embodiment, the panel body 1 includes:

[0046] External protective layer 11 is disposed on the outer layer of panel body 1;

[0047] The touch interaction layer 12 is disposed within the outer protective layer 11, and the touch detection device 2 is disposed within the touch interaction layer 12.

[0048] A flexible substrate layer 13 is disposed within the touch interaction layer 12, and a plurality of piezoelectric ceramic sheets 3 are disposed on the flexible substrate layer 13.

[0049] The outer protective layer 11 protects the internal touch and piezoelectric components from scratches, contamination, dust, and liquid corrosion, and provides a suitable tactile feel, such as frosted, smooth, or skin-friendly materials. Materials such as glass, acrylic, and silicone coatings can be selected. The touch interaction layer 12 integrates various sensors, such as capacitive touch sensors, optical sensors, and pressure sensors, to detect touch position, sliding trajectory, and force. Sensor data is input to the MCU to control the vibration mode of the piezoelectric ceramic sheet 3. The flexible substrate layer 13 serves as a carrier, integrating the piezoelectric ceramic sheet 3 and circuit connections while maintaining a certain degree of flexibility, providing high integration, and reducing size and weight, making the slider panel thinner and lighter.

[0050] As a preferred embodiment of the above, the flexible substrate layer 13 is a flexible printed circuit board (FPC).

[0051] FPCs are flexible enough to adapt to different structural designs: they can be bent, making them suitable for curved touch panels (such as smart home and automotive screens), and they support SMT (surface mount technology), allowing direct soldering of piezoelectric ceramic sheets 3 and drive circuits 42, reducing size and making them suitable for high-temperature environments.

[0052] Traditional rigid PCBs may affect the vibration transmission of the piezoelectric ceramic sheet 3. FPCs, being flexible, allow vibrations to be transmitted more directly to the slider surface, improving feedback. Due to their high integration, FPCs can be configured with piezoelectric ceramic sheets 3 of different sizes and frequencies in different areas of the slider panel.

[0053] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A slider panel with haptic feedback based on piezoelectric ceramics, characterized in that, include: A panel body, the surface of which is provided with a sliding strip area; A touch detection device is disposed under the panel body to detect the touch position and sliding trajectory of the slider area; A plurality of piezoelectric ceramic sheets are disposed below the panel body and located below the slider area; A control circuit is electrically connected to the touch detection device and a plurality of piezoelectric ceramic sheets, and controls the corresponding piezoelectric ceramic sheets to vibrate according to the touch position and sliding trajectory.

2. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 1, characterized in that, Several piezoelectric ceramic sheets are arranged in parallel along the slider area.

3. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 1, characterized in that, The control circuit includes a microcontroller, a drive circuit, and a power supply. The microcontroller receives the input signal from the touch detection device and controls the drive circuit to apply voltage to the piezoelectric ceramic sheet, thereby driving the piezoelectric ceramic sheet to generate vibration feedback.

4. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 3, characterized in that, Each of the piezoelectric ceramic sheets is provided with a driving circuit, and the driving circuit independently drives the corresponding piezoelectric ceramic sheet.

5. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 1, characterized in that, The touch detection device includes a capacitive touch sensor and / or an optical sensor.

6. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 5, characterized in that, The touch detection device also includes a pressure sensor and / or an acceleration sensor.

7. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 1, characterized in that, The panel body includes: An external protective layer is disposed on the outer layer of the panel body; A touch interaction layer is disposed within the outer protective layer, and the touch detection device is disposed within the touch interaction layer; A flexible substrate layer is disposed within the touch interaction layer, and a plurality of piezoelectric ceramic sheets are disposed on the flexible substrate layer.

8. The slider panel with haptic feedback based on piezoelectric ceramics as described in claim 7, characterized in that, The flexible substrate layer is a flexible printed circuit board (FPC).

Images