Anti-interference infrared touch display equipment capable of realizing zero touch height

Abstract

The utility model discloses an anti-interference infrared touch display device capable of realizing zero touch height, the infrared touch display device comprises a display device main body, an infrared emitting LED, an infrared receiving LED and a sensor, the infrared emitting LED and the infrared receiving LED are arranged on the display device main body, the infrared emitting LED and the infrared receiving LED are oppositely arranged, the sensor is arranged on the display device main body, and the sensor is arranged on the display device main body. And the sensor is fixedly mounted on the display equipment main body. (1) due to the detection of the sensor, the coordinate is generated only when the touch is really performed, so that the writing experience is improved, and the touch height of 0 is really achieved; and (2) the requirement on glass is reduced, even if the touch height of the structure is designed to be relatively high, the touch height can be zero under the condition of a sensor, and the experience feeling of a customer is not influenced. And (3) when mosquitoes stop on the surface of the glass, mistaken touch can be prevented due to the fact that the touch force of the mosquitoes is different from that of normal pen and finger touch in force or frequency.

Description

Technical Field

[0001] The utility model discloses a touch display device, in particular to an infrared touch display device capable of achieving zero touch height and preventing interference, belonging to the technical field of infrared touch display devices. Background Art

[0002] Infrared touch technology is a technology that uses infrared sensors to achieve touch interaction. Its basic principle is to arrange a series of infrared transmitters and receivers on the touch surface. When there is no object touching the touch surface, the infrared transmitter will emit an infrared beam, which will be reflected by the surface and captured by the receiver; when an object touches the surface, the touched area will block the reflection of the infrared beam, resulting in a decrease in the amount of light received by the receiver. By detecting the change in the amount of light received by the receiver, the system can determine the touch position and touch action. Infrared touch technology is widely used in various devices, including smartphones, tablets, kiosks, interactive displays, gaming devices, etc.

[0003] Infrared touch height refers to the height at which the touch screen reacts before the pen or finger touches the screen. In actual use, the lower the touch height, the better, because a high touch height can easily cause continuous strokes and misjudgment.

[0004] The current touch height is mainly determined by the height from the center of the lamp tube to the glass and the optimization of the software. During mass production, many inconsistencies are likely to occur (because it is impossible to achieve good consistency in the control of glass deformation in current production and manufacturing), which will cause great differences in the writing and touch experience of different machines.

[0005] In addition, when the existing infrared touch screen is used in some occasions, such as in summer, the whole machine has lights, which will attract some mosquitoes and the like to stay. In this case, it is equivalent to blocking the lamp signal, which will cause the device to recognize it as a touch, resulting in false touch. In addition, when the infrared touch screen is interfered, it will cause the signal to jump randomly, which will also cause false touch. Summary of the invention

[0006] In view of the shortcomings of the infrared touch devices in the prior art mentioned above, such as inconsistent infrared touch heights, great differences in touch experience, and easy occurrence of false touches, the utility model provides an infrared touch display device that can achieve zero touch height and is anti-interference. It judges touches through infrared touch combined with auxiliary sensors, truly achieves zero touch height, and can eliminate the occurrence of false touches.

[0007] The utility model adopts a technical solution to solve its technical problems: an infrared touch display device that can achieve zero touch height and prevent interference, the infrared touch display device comprises a display device body, an infrared transmitting LED, an infrared receiving LED and a sensor, the infrared transmitting LED and the infrared receiving LED are arranged on the display device body, and the infrared transmitting LED and the infrared receiving LED are arranged relatively, and the sensor is fixedly installed on the display device body.

[0008] The technical solution adopted by the utility model to solve its technical problems further includes:

[0009] The display device body comprises a touch module, a frame and a protective glass. The touch module is installed in the frame, the protective glass cover is installed on the touch module, and the sensor is installed on the frame, or mounted on the protective glass, or installed on the touch module.

[0010] A main control board is installed on the display device body, and the infrared transmitting LED, the infrared receiving LED and the sensor are electrically connected to the main control board respectively.

[0011] The sensor is an acceleration sensor, a vibration sensor or a pressure sensor.

[0012] The touch module adopts a bilateral structure, one side is an infrared transmitting end, on which an infrared transmitting LED is arranged, and the other side is an infrared receiving end, on which an infrared receiving LED is arranged. The infrared transmitting LED and the infrared receiving LED are arranged opposite to each other, the infrared transmitting end and the infrared receiving end are respectively arranged on the frame, and the infrared transmitting end and the infrared receiving end are connected to each other by a connecting line.

[0013] The touch module adopts a single-sided structure, one side is an infrared transmitting and receiving end, and the other side is a reflective object. The infrared transmitting LED and the infrared receiving LED are both arranged on the infrared transmitting and receiving end, and the infrared transmitting and receiving end and the reflective object are respectively arranged on the frame.

[0014] The reflective object is a reflective strip, a light-guiding strip or a metal reflective material.

[0015] The touch module adopts a four-sided structure, one of the upper and lower sides is an infrared transmitting end, and the other side is an infrared receiving end, one of the left and right sides is an infrared transmitting end, and the other side is an infrared receiving end, the infrared transmitting end is provided with an infrared transmitting LED, and the infrared receiving end is provided with an infrared receiving LED, the infrared transmitting LED and the infrared receiving LED are arranged opposite to each other, the infrared transmitting end and the infrared receiving end are respectively arranged on the frame, and the adjacent infrared transmitting ends and infrared receiving ends are respectively connected to each other by a group of connecting lines.

[0016] The touch module adopts a four-sided structure, all four sides are infrared transmitting and receiving ends, infrared transmitting LEDs and infrared receiving LEDs are arranged on the four sides, and the four sides are connected to each other in sequence through connecting lines; or one of the upper and lower sides is an infrared transmitting and receiving end, and the other side is a reflective object, and one of the left and right sides is an infrared transmitting and receiving end, and the other side is a reflective object, and the two infrared transmitting and receiving ends are connected to each other through connecting lines.

[0017] The connecting line adopts FFC line.

[0018] The beneficial effects of the utility model are as follows: (1) Because there is sensor detection, coordinates are generated only when there is a real touch, which improves the writing experience and truly achieves 0 touch height. (2) The requirements for glass are reduced. Even if the touch height of the structure is designed to be relatively high, 0 touch height can be achieved with the sensor, without affecting the customer experience. (3) When a mosquito lands on the glass surface, the force of its touch is different from that of a normal pen or finger touch in terms of force or frequency, which can prevent the occurrence of false touches.

[0019] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the infrared component solution for one side of the infrared touch device.

[0021] Figure 2 Schematic diagram of the structure of the infrared component solution for setting up both sides of the infrared touch device.

[0022] Figure 3 Schematic diagram of the structure of setting infrared components on the four sides of the infrared touch device.

[0023] Figure 4 Schematic diagram of the structure of the infrared transmitting and receiving components on the four sides of the infrared touch device.

[0024] Figure 5 It is a schematic diagram of the structure of the utility model.

[0025] Figure 6 This is a schematic diagram of the connection structure of the utility model.

[0026] Figure 7 The utility model is a schematic diagram of the mosquito-catching structure.

[0027] In the figure, 1-infrared transmitting and receiving end, 2-reflective object, 3-infrared transmitting LED, 4-infrared receiving LED, 5-infrared transmitting end, 6-infrared receiving end, 7-connecting line, 8-writing surface contact point, 9-writing object, 10-sensor, 11-frame, 12-main control board, 13-mosquito. DETAILED DESCRIPTION

[0028] This embodiment is a preferred implementation mode of the utility model. Other embodiments whose principles and basic structures are the same or similar to those of this embodiment are within the protection scope of the utility model.

[0029] Please refer to the attached Figure 5 and attached Figure 6 The utility model mainly protects an infrared touch display device which can achieve zero touch height and prevent interference, and mainly includes a display device body, an infrared transmitting LED 3, an infrared receiving LED 4 and a sensor 10. The infrared transmitting LED 3 and the infrared receiving LED 4 are arranged on the display device body, and the infrared transmitting LED 3 and the infrared receiving LED 4 are arranged relatively, and the sensor 10 is fixedly installed on the display device body.

[0030] In this embodiment, the display device body includes a touch module, a frame 11 (or called a profile) and a protective glass. The touch module is installed in the frame 11, and the protective glass cover is installed on the touch module. The sensor 10 can be installed on the frame, or mounted at an appropriate position on the protective glass, or can also be installed at an appropriate position on the touch module.

[0031] In this embodiment, a main control board 12 is installed on the display device body, an MCU (ie, a control chip) is installed on the main control board 12 , and the infrared transmitting LED 3 , the infrared receiving LED 4 and the sensor 10 are electrically connected to the main control board 12 respectively.

[0032] In this embodiment, the sensor 10 is an acceleration sensor, a vibration sensor, or a pressure sensor. When the sensor 10 is a pressure sensor, since the frame 11 cannot be pressed when touching, it can only be installed on the touch module or the protective glass.

[0033] Please see attached Figure 5 When the utility model is used, when the pen or finger (or other writing object) touches the glass, the sensor 10 will detect the change, and after amplification by the amplifier circuit, it will be transmitted to the MCU. After the MCU and the touch coordinate data are fused, it can be ensured that the touch data when the pen or finger touches the glass is the data the user wants, and truly achieves 0 touch. Please refer to the attached Figure 7When a mosquito 13 stops on the glass surface, since the force of its touch is different from that of a normal pen or finger touch in terms of force or frequency, a threshold value can be set for the detection of the sensor 10. Only when this value is exceeded can it be identified as a valid touch. In other words, to achieve a true touch, two conditions must be met at the same time. First, there must be touch data obtained by the infrared receiving LED 4, and the other must meet the threshold requirement of the sensor 10. When there is external interference, the infrared receiving LED 4 obtains touch data, but since one of the thresholds of the sensor 10 is not met, it is judged as no touch, thereby avoiding the occurrence of false touches.

[0034] In this embodiment, the touch module preferably adopts a double-sided structure. Figure 2 One side is an infrared transmitting end 5, on which an infrared transmitting LED 3 is arranged, and the other side is an infrared receiving end 6, on which an infrared receiving LED 4 is arranged, the infrared transmitting LED 3 and the infrared receiving LED 4 are arranged opposite to each other, the infrared transmitting end 5 and the infrared receiving end 6 are respectively arranged on the frame, and the infrared transmitting end 5 and the infrared receiving end 6 are connected to each other through a group of connecting wires 7, and the connecting wire 7 adopts FFC wire (i.e. flexible flat cable, called Flexible Flat Cable, or Flat Flexible Cable).

[0035] In specific implementation, the touch module can also use a single-sided structure. Please refer to the attached Figure 1 , that is, one side is the infrared transmitting and receiving end 1, and the other side is the reflective object 2. The infrared transmitting LED 3 and the infrared receiving LED 4 are both arranged on the infrared transmitting and receiving end 1. The light emitted by the infrared transmitting LED 3 is reflected by the reflective object 2 and then received by the infrared receiving LED 4. The reflective object 2 can be a reflective strip, a light guide strip or a metal reflective material. The infrared transmitting and receiving end 1 and the reflective object 2 are respectively arranged on the frame.

[0036] The touch module can also use a four-sided structure. Please refer to the attached Figure 3 That is, one of the upper and lower sides is an infrared transmitting end 5, and the other side is an infrared receiving end 6; one of the left and right sides is an infrared transmitting end 5, and the other side is an infrared receiving end 6; an infrared transmitting LED 3 is arranged on the infrared transmitting end 5, and an infrared receiving LED 4 is arranged on the infrared receiving end 6; the infrared transmitting LED 3 and the infrared receiving LED 4 are arranged opposite to each other; the infrared transmitting end 5 and the infrared receiving end 6 are respectively arranged on the frame; adjacent infrared transmitting ends 5 and infrared receiving ends 6 are respectively connected to each other through a group of connecting wires 7, and the connecting wire 7 adopts FFC wire (i.e. flexible flat cable, called Flexible Flat Cable, or Flat Flexible Cable).

[0037] Please refer to the attached Figure 4 When the touch module adopts a four-side structure, the four sides can also be set as infrared transmitting and receiving terminals 1, infrared transmitting LEDs 3 and infrared receiving LEDs 4 are set on the four sides, and the four sides are connected to each other through connecting lines 7. Or one of the upper and lower sides is the infrared transmitting and receiving terminal 1, and the other side is the reflective object 2, and one of the left and right sides is the infrared transmitting and receiving terminal 1, and the other side is the reflective object 2, and the two infrared transmitting and receiving terminals 1 are connected to each other through connecting lines 7. The reflective object 2 can be a reflective strip, a light guide strip or a metal reflective material.

[0038] (1) Because of sensor detection, coordinates are generated only when the touch is actually made, which improves the writing experience and truly achieves zero touch height.

[0039] (2) The requirements for glass are reduced. Even if the touch height of the structure is designed to be relatively high, the touch height can be achieved to 0 with the presence of a sensor, without affecting the customer experience.

[0040] (3) When a mosquito lands on the glass surface, the force or frequency of its touch is different from that of a normal pen or finger touch, which can prevent false touches.

Claims

1. An infrared touch display device capable of achieving zero touch height and preventing interference, characterized in that: The infrared touch display device comprises a display device body, an infrared emitting LED (3), an infrared receiving LED (4) and a sensor (10); the infrared emitting LED (3) and the infrared receiving LED (4) are arranged on the display device body, and the infrared emitting LED (3) and the infrared receiving LED (4) are arranged relative to each other; and the sensor (10) is fixedly mounted on the display device body.

2. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 1 is characterized in that: The display device body comprises a touch module, a frame (11) and a protective glass, the touch module is mounted in the frame (11), the protective glass cover is mounted on the touch module, and the sensor (10) is mounted on the frame, or mounted on the protective glass, or mounted on the touch module.

3. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 1 is characterized in that: A main control board (12) is installed on the display device body, and the infrared transmitting LED (3), the infrared receiving LED (4) and the sensor (10) are electrically connected to the main control board (12) respectively.

4. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 1 is characterized in that: The sensor (10) is an acceleration sensor, a vibration sensor or a pressure sensor.

5. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 2 is characterized in that: The touch module adopts a bilateral structure, one side is an infrared transmitting end (5), an infrared transmitting LED (3) is arranged on the infrared transmitting end (5), and the other side is an infrared receiving end (6), an infrared receiving LED (4) is arranged on the infrared receiving end (6), the infrared transmitting LED (3) and the infrared receiving LED (4) are arranged opposite to each other, the infrared transmitting end (5) and the infrared receiving end (6) are respectively arranged on the frame, and the infrared transmitting end (5) and the infrared receiving end (6) are connected to each other through a connecting line (7).

6. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 2, characterized in that: The touch module adopts a single-sided structure, one side is an infrared transmitting and receiving end (1), and the other side is a reflective object (2), the infrared transmitting LED (3) and the infrared receiving LED (4) are both arranged on the infrared transmitting and receiving end (1), and the infrared transmitting and receiving end (1) and the reflective object (2) are respectively arranged on the frame.

7. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 6 is characterized in that: The reflective object (2) is made of a reflective strip, a light-guiding strip or a metal reflective material.

8. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 2, characterized in that: The touch module adopts a four-sided structure, wherein one of the upper and lower sides is an infrared transmitting end (5) and the other side is an infrared receiving end (6), and one of the left and right sides is an infrared transmitting end (5) and the other side is an infrared receiving end (6). The infrared transmitting end (5) is provided with an infrared transmitting LED (3), and the infrared receiving end (6) is provided with an infrared receiving LED (4). The infrared transmitting LED (3) and the infrared receiving LED (4) are arranged opposite to each other. The infrared transmitting end (5) and the infrared receiving end (6) are respectively arranged on the frame, and adjacent infrared transmitting ends (5) and infrared receiving ends (6) are respectively connected to each other through a group of connecting wires (7).

9. The infrared touch display device capable of achieving zero touch height and preventing interference according to claim 2, characterized in that: The touch module adopts a four-sided structure, all four sides are infrared transmitting and receiving terminals (1), infrared transmitting LEDs (3) and infrared receiving LEDs (4) are arranged on the four sides, and the four sides are connected to each other in sequence through connecting lines (7); or one of the upper and lower sides is an infrared transmitting and receiving terminal (1) and the other side is a reflective object (2), and one of the left and right sides is an infrared transmitting and receiving terminal (1) and the other side is a reflective object (2), and the two infrared transmitting and receiving terminals (1) are connected to each other through connecting lines (7).

10. The infrared touch display device capable of achieving zero touch height and preventing interference according to any one of claims 5, 8 or 9, characterized in that: The connecting line (7) is an FFC line.

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