TWI846465B - Display device with a surface tactile feedback system - Google Patents

Abstract

A display device with a surface tactile feedback system, which includes a database unit for storing texture data, a calculate unit connected to the database unit, prestores algorithm, receives the texture data from the database unit and converts the texture data into drive signal through the algorithm, a circuit control unit connected to the calculate unit, receives the drive signal and has a comparison database for prestoring comparison data, an actuator connected to the circuit control unit, an actuator driving unit drives the actuator to vibrate according to the drive signal and disposed in the display device, a sensing device disposed in the display device, receives feedback data, connected to the circuit control unit and transmits the feedback data to the circuit control unit, the circuit control unit receives the feedback data, compares the feedback data with the comparison data to obtain the corresponding drive signal from the calculate unit and controls the vibration of the actuator according to the drive signal.

Description

Display device with surface touch feedback system

The present invention relates to a tactile feedback system, and more particularly to a display device having a surface tactile feedback system.

The present invention also relates to a display module having a directional vibration buffer device.

With the advancement of technology, human-machine interfaces have been widely used in every corner of daily life, such as mobile devices, car hosts, etc. In order to improve the user's sensitivity and interactivity when operating the touch screen, it is necessary to enhance the feedback effect when the user touches the panel.

In addition, the current use of human-machine interfaces mostly relies on vision for operation. With the assistance of tactile feedback, it can provide more certainty in control applications and enhance the entertainment or interactivity of the user's senses. When operating important instruments or display products that cannot be moved and require continuous attention, clear feedback or auxiliary signals are provided so that the operator can feel the correct touch position or operate the various devices normally. In this way, operational errors and possible hazards of accidental touches can be avoided. For example, industrial applications, medical equipment, automotive fields or other auxiliary control applications can all develop their tactile additional effects through this technology.

Please refer to the patent publication number TW202244676A of the Republic of China, which discloses a tactile simulation system, which mainly includes a peripheral device and a processing center. The peripheral device includes a vibration unit. The peripheral device is used to generate a motion signal. The processing center is connected to the peripheral device and provides display screen data containing an object. The processing center establishes a corresponding The cursor of the peripheral device determines the overlapping path between the cursor and the object according to the movement signal, and controls the vibration unit to generate vibration waveform changes during the vibration period according to the overlapping path and the characteristic data of the object. It can be seen that this prior art can control the vibration of the vibration unit of the peripheral device according to the overlapping path between the cursor and the object and the characteristic data of the object to simulate the touch of the object.

However, the above-mentioned prior art only discloses controlling the vibration of the vibration unit of the peripheral device according to the overlapping path between the cursor and the object and the characteristic data of the object. However, it does not clearly disclose how to control the vibration of the vibration unit according to the overlapping path and the characteristic data of the object. According to general handheld devices, the vibration unit is set on the handheld device body, so the vibration is an overall vibration mode. Therefore, when only the finger touches the display screen, the finger does not directly feel the vibration, and the touch feedback of the screen is still a flat and smooth feeling. It is impossible to determine whether the finger falls correctly, so it is still difficult to effectively achieve the technical effect of simulating the touch of the object.

The present invention provides a display device with a surface tactile feedback system, which is mainly used to increase user interaction and provide different feedback effects according to different user operation modes. Different feedback is provided for different positions of the display device, so that the operator can know by touch that the finger has landed on the corresponding operation position, thereby truly becoming an operation auxiliary function other than vision.

To achieve the above-mentioned purpose, the present invention provides a display device with a surface touch feedback system, comprising: a database unit for storing at least one texture data, the texture data can be simulation data of a rough surface, a fine surface, a push button, a knob, a switch, etc.; an operation unit, connected to the database unit signal, the operation unit pre-stores an algorithm, the operation unit has various operation conditions set corresponding to different operation scenarios, such as the speed of the first operation condition, the pressure of the second operation condition or The algorithm unit receives the texture data from the database unit and converts the texture data into a driving signal through the algorithm; a circuit control unit has a microcontroller chip, an actuator driving unit and a comparison database. The circuit control unit is connected to the algorithm unit by signal. The circuit control unit receives the driving signal. The comparison database stores a comparison data. The comparison data is a pressure data and the drive data. The corresponding relationship of the signal; an actuator, which is control-connected to the circuit control unit, the actuator driving unit is used to drive the actuator to vibrate according to the driving signal, and the actuator is used to provide kinetic energy of vibration; a display device, the actuator is installed on the display device, the display device is set with different operation areas, and each operation area corresponds to different texture data of the data unit; a pressure sensing device, which is installed on the display device, and the pressure sensing device is used to receive the user touching or pressing the The display device performs an action that meets the operating conditions to form a pressure data, the pressure sensing device is connected to the circuit control unit signal, the pressure sensing device is used to transmit the pressure data to the circuit control unit; and the circuit control unit is used to receive the pressure data, the microcontroller chip of the circuit control unit compares the pressure data with the comparison data to obtain the corresponding driving signal from the calculation unit, and controls the vibration of the actuator according to the driving signal.

Thus, when the operator touches a certain operation area with a finger and performs the operation condition corresponding to the operation area, the pressure sensing device obtains the corresponding pressure data, and then transmits the pressure data to the circuit control unit. The circuit control unit obtains the corresponding driving signal according to the pressure data to drive the actuator to provide a vibration wave with a corresponding vibration frequency, amplitude, and waveform, thereby simulating a corresponding feedback effect. When the finger moves to a different operation area, if it passes through a non-operation area, the non-operation area cannot send the corresponding The display device does not move. When the finger moves into different operation areas and performs the corresponding operation conditions of the different operation areas, the pressure sensing device will generate the corresponding pressure data and provide the actuator with different vibration frequencies, amplitudes and different waveforms of shock wave feedback. The operator can immediately feel different feedback modes at the fingertips and confirm that the different operation areas of the display device are in contact. Different visual senses can be used to confirm the position of the finger pressing on the display device, thereby achieving the purpose of assisting visual senses.

The present invention also provides a display module with a directional vibration buffer device, comprising: a display device having a front side and a rear side opposite to each other, the front side being used to display a picture; a first support member coupled to the rear side of the display device, the first support member having a first fixing portion; an actuator mounted on the rear side or the first support member; a second support member having a second fixing portion; and a buffer device having a first locking portion and a second locking portion, the first locking portion being coupled to the first fixing portion, the second locking portion being coupled to the second fixing portion, and the buffer device being fixed between the first support member and the second support member.

As can be seen from the foregoing, the present invention is mainly to directly transmit the vibration to the front side of the display device by directly installing the actuator on the rear side of the display device or the first support member, thereby effectively preventing the vibration kinetic energy from being dispersed to other mechanisms of the display module, thereby greatly improving the feedback effect and allowing the user to fully feel the tactile feedback.

In addition, the present invention also installs the display device on the first support member, and the second support member is connected to the first support member only through the buffer device, so that the buffer device can achieve the effect of vibration and reset through the elastic characteristics of the buffer device, and the display module and the external structure are blocked by the buffer device of directional vibration to prevent the vibration force from overflowing to the product casing.

A: Texture extraction unit

A1: Multi-axis acceleration device

A2: Second pressure sensor

B: Database unit

B10: Texture data

B11: First texture data

B12: Second texture data

B13: Third texture data

C: Calculation unit

C10: Operating conditions

C11: First operating condition

C12: Second operating condition

C13: The third operating condition

C14: Fourth operating condition

C15: Fifth operating condition

D: Circuit control unit

D1: Microcontroller chip

D2: Actuator drive unit

D3: Comparison database

G: Pressure sensing device

G1: Pressure sensor

G2: Multi-axis acceleration device

10: Display device

11: Front side

12: Posterior side

20: Actuator

30: The first support

30A: First side

30B: Second side

31: First fixed part

311: First corresponding perforation

40: Second support member

40A: First junction side

40B: Second junction side

41: Second fixing part

411: Second corresponding perforation

50: Buffer device

51: First locking part

511: First piercing

52: Second locking part

521: Second piercing

61: The first bolt

62: Second bolt

70: Outer cover

S: Buffer space

FIG1 is a schematic diagram of a display device with a surface tactile feedback system of the present invention.

FIG2 is a schematic diagram of a display device with a surface touch feedback system of the present invention.

FIG3 is a schematic diagram of a preferred embodiment of the display device with a surface tactile feedback system of the present invention.

FIG4 is a schematic diagram of a display module having a directional vibration buffer device of the present invention.

Figure 5 is a schematic diagram of the texture data of the present invention.

Figure 6 is a schematic diagram of the operating conditions of the present invention.

Figure 7 is a schematic diagram of an embodiment of the display module of the present invention that divides the screen into different operation areas and the display area and non-operation area.

FIG8 is a schematic diagram of a display module with a shock-absorbing and buffering device according to the present invention.

Figure 9 is a three-dimensional diagram of the display module with a shock-absorbing and buffering device of the present invention.

Figure 10 is an exploded view of the display module with a shock-absorbing and buffering device of the present invention.

Figure 11 is a cross-sectional view of the display module with a shock-absorbing and buffering device of the present invention.

Figure 12 is a cross-sectional view of the display module of the present invention having a shock absorbing and buffering device.

The present invention provides a display device with a surface touch feedback system, please refer to Figure 1-12, including: a database unit B for storing at least one texture data B10. For example, the database unit B can store multiple texture data B10. Preferably, the texture data B10 includes a pressure value and a multi-axis data, including: vibration frequency, vibration amplitude intensity, vibration waveform, etc., so that the texture data The data B10 may have various forms, such as a first texture data B11 in a push button form, a second texture data B12 in a knob form, a second texture data B13 of a rough grass terrain, or texture data of other forms; an algorithm unit C may be connected to the database unit B by a wired or wireless signal, and the algorithm unit C may store an algorithm, and the algorithm unit C may also contain at least one operation condition C 10, so that the algorithm can be used to convert each texture data B10 in the database unit B into a driving signal. Preferably, the calculation unit C converts the multi-axis data of the texture data into single-axis data through the algorithm, and integrates the single-axis data with the pressure value to convert the driving signal; a circuit control unit D, having a microcontroller chip D1, an actuator drive unit D2 and a comparison data The circuit control unit D is connected to the calculation unit C by signal. The circuit control unit D is used to receive the driving signal. The actuator driving unit D2 is used to drive the actuator 20 to vibrate. The comparison database D3 stores a comparison data. The comparison data is a corresponding relationship between a pressure data and the driving signal. Preferably, the circuit control unit D also has a boost circuit. The actuator 20 is connected to the actuator 20 by signal. The circuit control unit D controls the connection, the actuator 20 is used to provide kinetic energy for vibration, and the circuit control unit D controls the actuator 20 to vibrate through the driving signal; a display device 10, the actuator 20 is installed on the display device 10; a pressure sensing device G, having a pressure sensor G1 and a multi-axis acceleration device G2, the pressure sensing device G is installed below the display device 10, the pressure sensing device The device G1 is used to receive the pressure intensity data generated when the user touches or presses the display device 10, and the multi-axis acceleration device G2 is used to receive the displacement data and coordinate data generated when the user touches or presses the display device 10. The pressure intensity data is the pressure value of the user pressing the display device 10, the displacement data is the displacement of the user's finger on the display device 10, and the coordinate data is the displacement of the user's finger on the display device 10. The coordinates where the user's finger stays or moves on the display device 10 define the displacement data, the pressure intensity data or the coordinate data. Any one of the above data or a combination of multiple data is defined as a pressure data. The pressure sensing device G can be connected to the circuit control unit D signal by wired or wireless means. The pressure sensing device G is used to transmit the pressure data to the circuit control unit D; The circuit control unit D is provided To receive the pressure data, the microcontroller chip D1 of the circuit control unit D compares the pressure data with the comparison data, obtains a driving signal corresponding to the pressure data from the calculation unit C, and controls the actuator 20 to vibrate according to the driving signal. The actuator 20 provides vibration waves with different vibration frequencies, different amplitudes, and different waveforms, thereby allowing the user to feel the tactile sensation of different texture presentations.

In a preferred embodiment, please refer to FIG. 3-4, there is another texture extraction unit A, which can be connected to the database unit B by wired or wireless signal. The texture extraction unit A has a multi-axis acceleration device A1 and a second pressure sensor A2. The second pressure sensor A2 is used to contact a material to be detected to obtain the pressure value. The multi-axis acceleration device A1 is used to obtain the multi-axis data, which is the acceleration of each axis. The pressure value and the multi-axis data are defined as the texture data by using the acceleration values of the X, Y, and Z axes; Thereby, when the pressure sensing device G obtains different pressure data, the pressure sensing device G transmits the pressure data to the circuit control unit D, and the circuit control unit D obtains the corresponding driving signal according to the pressure data to drive the actuator 20 to provide shock waves with different vibration frequencies, different amplitudes, and different waveforms.

The present invention further provides a display module with a directional vibration buffer device. In the first embodiment, please refer to FIG. 5, including: A display device 10, having a front side 11 and a rear side 12 opposite to each other, the front side 11 is used to display the image; A first support member 30, coupled to the rear side 12 of the display device 10, the first support member 30 having a first fixing portion 31; An actuator 20, mounted on the rear side 12 or the first support member 30; a second support member 40, having a second fixing portion 41; A buffer device 50, having a first locking portion 51 and a second locking portion 52, the first locking portion 31 being connected to the rear side 12 of the display device 10; A locking portion 51 is combined with the first fixing portion 31, and the second locking portion 52 is combined with the second fixing portion 41, so that the buffer device 50 is fixed between the first supporting member 30 and the second supporting member 40. In this embodiment, the first locking portion 51 is aligned with the first fixing portion 31 and abuts against each other, and the second locking portion 52 is aligned with the second fixing portion 41 and abuts against each other. The buffer device 50 also has a mechanical support structure. The buffer device 50 is made of elastic materials, such as rubber, metal, polymer, etc. Specifically, the buffer device 50 can use a gasket, a metal leaf spring, a polymer, but is not limited thereto.

The display module with a directional vibration buffer device of the present invention, in the second embodiment, please refer to Figures 8-11, including: A display device 10, having an opposite front side 11 and a rear side 12, the front side 11 is used to display the picture; A first support member 30, having an opposite first side 30A and a second side 30B, the first side 30A is combined with the rear side 12 of the display device 10, the first support member 30 has a first fixing portion 31, the first fixing portion 31 is located on the second side 30B, in this embodiment, the first fixing portion 31 has a first corresponding through hole 311; an actuator 20, installed on the rear side 12 or the first support member 30; a second support member 40, having a first coupling side 40A and a second coupling side 40B opposite to each other, the second support member 40 having a second fixing portion 41; the second fixing portion 41 is located on the first coupling side 40A, in this embodiment, the second fixing portion 41 has a second corresponding through hole 411; a buffer device 50, having a first A locking portion 51 and a second locking portion 52, the first locking portion 51 is combined with the first fixing portion 31, and the second locking portion 52 is combined with the second fixing portion 41, so that the buffer device 50 is fixed between the first support member 30 and the second support member 40. In this embodiment, the first locking portion 51 has a first through hole 511, and the second locking portion 52 has a second through hole 521. The first locking portion 51 and the first fixing portion 31 are aligned and abutted against each other, and further have a first bolt 61, and the first bolt 61 penetrates The second locking portion 52 is arranged at the first through hole 511 and the first corresponding through hole 311, and is aligned with the second fixing portion 41 and abuts against each other. A second bolt 62 is also provided, and the second bolt 62 is arranged at the second through hole 521 and the second corresponding through hole 411. The buffer device 50 is a sheet-shaped body, and the buffer device 50 is made of a flexible material, such as rubber, metal, polymer, etc. Specifically, the buffer device 50 can be a gasket, a metal sheet, or a sheet made of a polymer, but is not limited thereto.

In this embodiment, the number of the second locking parts 52 is plural, the number of the first locking parts 51 is one, and the second locking parts 52 are located around the first locking parts 51.

Preferably, there is another outer cover 70, the second coupling side 40B of the second support member 40 is locked and coupled to the outer cover 70, there is a buffer space S between the outer cover 70 and the display device 10, and the outer cover 70 and the display device 10 are connected only by the buffer device 50.

As can be seen from the foregoing, the present invention mainly enables the actuator 20 to be directly installed on the rear side surface 12 of the display device 10 or the first support member 30 so as to directly transmit the vibration to the front side surface 11 of the display device 10, thereby effectively preventing the vibration kinetic energy from being dispersed to other mechanisms of the display module, thereby greatly improving the feedback effect, allowing the user to fully feel the tactile feedback.

In addition, the present invention also installs the display device 10 on the first support member 30, and the second support member 40 is connected to the first support member 30 only through the buffer device 50, so that the buffer device 50 has elastic characteristics to achieve the effect of vibration and reset, and the display module and the external structure are blocked by the buffer device 50 with directional vibration to prevent the vibration force from overflowing to the product casing.

Please also refer to FIGS. 1 and 5-7. The display device 10 of the present invention has a screen 100 on its surface. The screen 100 is a touch screen, and different areas are pre-set as different operation areas 101. A non-operation area 102 is set outside the operation area 101. A display area 103 is also set in the operator's visual field. As shown in this figure, the operation area 101 is divided into three parts, including: a first operation area 1011 in the form of a push button, a second operation area 1012 in the form of a knob, and a third operation area 1013 in the form of a rough surface. The screen of each operation area 101 can be drawn according to the characteristics of the operation area 101, and the texture data B10 can be the first texture data B11 in the form of a push button. , the second texture data B12 of the knob shape and the third texture data B13 of the rough grass shape, and when the operator's finger presses on the first operation area 1011, slightly presses down and pushes the push button position in the first operation area 1011 to move up and down and have displacement, when the first operation condition C11 (speed), the second operation condition C12 (pressure) and the third operation condition C13 (vertical direction) in the calculation unit C are met, the calculation unit C will call the first texture data B11 in the database unit B into the algorithm calculation and send the corresponding signal through the circuit control unit D to the actuator 20 of the display device 10 to generate the corresponding vibration mode, and the operator's finger can feel the vibration, just like the finger pressing a push button; and when When the finger moves to the non-operating area 102, there is no pre-determined texture data B10 and operating condition C10, so there is no action; when the finger moves to the second operating area 1012 and performs an arc rotation similar to a knob, when the first operating condition C11 (speed), the second operating condition C12 (pressure) and the fourth operating condition C14 (arc trajectory) in the calculation unit C are met, the calculation unit C will call the second texture data B12 in the database unit B into the calculation of the algorithm and send the corresponding signal through the circuit control unit D to the actuator 20 of the display device 10 to generate a corresponding vibration mode, and the operator's finger can feel the vibration, just like the finger pressing a knob; and when the finger moves to the third operating area 1013 and moves left and right according to the arrow, when the first operation condition C11 (speed), the second operation condition C12 (pressure) and the fifth operation condition C15 in the calculation unit C are met, the calculation unit C will call in the third texture data B13 in the database unit B and calculate and send the corresponding signal to the actuator 20 of the display device 10 through the circuit control unit D to generate the corresponding vibration mode, and the operator's finger can feel the vibration, such as the feeling of the finger touching the grass and moving horizontally; the operator can feel different tactile feedback when performing operations in different operation areas 101, and can directly complete the corresponding operation or control in a tactile mode in dim light or without vision.

B: Database unit

C: Calculation unit

D: Circuit control unit

G: Pressure sensing device

10: Display device

20: Actuator

Claims (4)

A display device with a surface touch feedback system includes: a database unit for storing at least one texture data; a calculation unit connected to the database unit by signal, the calculation unit pre-stores an algorithm, the calculation unit has a plurality of built-in operating conditions for matching the texture data of the database unit, and the calculation unit converts the texture data into a driving signal through the algorithm; a circuit control unit having a microcontroller chip, a controller, and a control circuit; The circuit control unit is connected to the calculation unit by signal, the circuit control unit is used to receive the driving signal, the comparison database stores a comparison data, the comparison data is a corresponding relationship between the pressure data and the driving signal; an actuator is connected to the circuit control unit by control, the actuator driving unit is used to drive the actuator to vibrate according to the driving signal, and the actuator is used to provide kinetic energy of vibration; a display The actuator is installed on the display device, the display device has a screen, and the screen is provided with at least one operation area, each of the operation areas corresponds to each of the texture data and each of the operation conditions; a pressure sensing device is installed on the display device, the pressure sensing device is used to receive a pressure data when the user touches or presses the display device, the pressure sensing device is connected to the circuit control unit signal, and the pressure sensing device is used to transmit the pressure data to the circuit control unit; and the circuit control unit is provided for an operator to operate with his finger in the operation area in accordance with the operation conditions of the operation area and receive the pressure data at the same time, the microcontroller chip of the circuit control unit compares the pressure data with the comparison data, and obtains the corresponding driving signal through the algorithm of the corresponding texture data of the database unit through the calculation unit, and controls the vibration of the actuator according to the driving signal. A display device with a surface touch feedback system as described in claim 1, wherein the texture data includes a pressure value and a multi-axis data, and the calculation unit converts the multi-axis data of the texture data into single-axis data through the algorithm, and integrates the single-axis data and the pressure value to obtain the driving signal. A display device with a surface touch feedback system as described in claim 1, wherein the pressure sensing device has a pressure sensor and a multi-axis acceleration device, the pressure sensor is used to receive a pressure intensity data generated when the user touches or presses the display device, and the multi-axis acceleration device is used to receive a displacement data and a coordinate data generated when the user touches or presses the display device, and the displacement data, the pressure intensity data, or the coordinate data is defined as any one of the above data or a combination of multiple data as the pressure data. A display device with a surface tactile feedback system as described in claim 3, wherein the pressure intensity data is the pressure value of the user pressing the display device, the displacement data is the displacement of the user's finger on the display device, and the coordinate data is the coordinates of the user's finger staying or moving on the display device.