Infrared touch display device capable of eliminating touch dead zone
The integration of a positioning module, like a TOF module, addresses the issue of black edge zones in infrared touch displays by improving edge detection, ensuring accurate touch recognition without structural changes.
Patent Information
- Application Number
- CN202420822885.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-19
AI Technical Summary
Infrared touch display devices suffer from black edge zones due to insufficient light transmission at the edges, leading to touch dead zones and inaccurate edge clicking.
Incorporating a positioning module, such as a Time of Flight (TOF) module, at the edges of the infrared touch display device to supplement light detection and improve accuracy, using infrared LEDs on opposite sides and connecting them with flexible flat cables.
Reduces or eliminates black edge zones, enhancing edge click accuracy without altering the overall machine structure, thus reducing customer costs.
Smart Images
Figure CN222167579U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses a touch display device, in particular to an infrared touch display device capable of eliminating a touch dead zone, belonging to the technical field of 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] In the prior art, most mainstream infrared touch display devices are infrared double-sided touch display devices, that is, there are sensors on only two sides. However, during use, the existing infrared double-sided touch display devices have an inherent disadvantage, that is, the black borders on both sides are too large. This is determined by the principle of infrared touch display devices. Infrared touch screens usually use infrared transmitters and receivers to detect touch actions. In the edge area, due to the limitation of light transmission or the position of the sensor, there may be no light or little light, thus generating black borders. In this way, there will be a phenomenon of black borders in the touch area, that is, there is a touch dead zone. Summary of the invention
[0004] In view of the above-mentioned disadvantage of infrared touch display devices in the prior art that the display area has a black edge phenomenon, the utility model provides an infrared touch display device capable of eliminating touch dead zones, which adds a positioning module at the edge of the infrared touch display device to reduce black edge silk screen printing and make edge clicking more accurate.
[0005] The utility model adopts a technical solution to solve its technical problem: an infrared touch display device capable of eliminating a touch dead zone, the infrared touch display device comprising an infrared transmitting LED, an infrared receiving LED and a positioning module, the infrared transmitting LED and the infrared receiving LED are arranged on one side of the infrared touch display device or respectively on two opposite sides of the infrared touch display device, and a positioning module is arranged at the edge of the infrared touch display device.
[0006] The technical solution adopted by the utility model to solve its technical problems further includes:
[0007] The positioning module adopts a TOF module or other positioning modules.
[0008] The infrared touch display device has an infrared transmitting end on one side, an infrared transmitting LED is arranged on the infrared transmitting end, and an infrared receiving end on the other side, an infrared receiving LED is arranged on the infrared receiving end, the infrared transmitting LED and the infrared receiving LED are arranged opposite to each other, a group of positioning modules are arranged at both ends of the infrared transmitting end and the infrared receiving end respectively, and the infrared transmitting end and the infrared receiving end are connected to each other through a group of connecting lines.
[0009] The infrared touch display device has an infrared transmitting and receiving end on one side and a reflective object on the other side. The infrared transmitting LED and the infrared receiving LED are both arranged on the infrared transmitting and receiving end. A group of positioning modules are respectively arranged at both ends of the infrared transmitting and receiving end and the reflective object, and the positioning modules are interconnected by connecting lines.
[0010] The reflective object is a reflective strip, a light-guiding strip or a metal reflective material.
[0011] The infrared touch display device has an infrared transmitting end on one side and an infrared receiving end on the other side of the upper and lower sides, and an infrared transmitting end on one side and an infrared receiving end on the other side of the left and right sides. 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, and a group of positioning modules are respectively provided at both ends of the infrared transmitting end and the infrared receiving end, and adjacent infrared transmitting ends and infrared receiving ends are respectively connected to each other by a group of connecting lines.
[0012] The connecting line adopts FFC line.
[0013] The beneficial effect of the utility model is that the utility model can reduce the black edge silk screen of the infrared touch display device by adding a positioning module as an aid, making the edge click more accurate. At the same time, the customer's whole machine structure does not need to be changed, thereby reducing the customer's use cost.
[0014] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the structure of the infrared component solution for one side of the infrared touch device.
[0016] Figure 2 Schematic diagram of the structure of the infrared component solution for setting up both sides of the infrared touch device.
[0017] Figure 3 Schematic diagram of the structure of setting infrared components on the four sides of the infrared touch device.
[0018] Figure 4It is a schematic diagram of the structure of the utility model.
[0019] 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 wire, 8-TOF module. DETAILED DESCRIPTION
[0020] 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.
[0021] Please see attached Figure 4 The utility model mainly includes an infrared transmitting LED 3, an infrared receiving LED 4 and a positioning module. The infrared transmitting LED 3 and the infrared receiving LED 4 are arranged on one side of the infrared touch display device or respectively on two opposite sides of the infrared touch display device. A positioning module is arranged at the edge of the infrared touch display device, which can be used to make up for the insufficient light at the edge, so as to make the touch more accurate, reduce the black edge or even eliminate the black edge.
[0022] In this embodiment, the positioning module can use a TOF module 8, which is mainly used to provide the Y-axis coordinates of the edge, because the traditional double-sided is the upper and lower sides, and there is a natural hole in the edge in the other direction. Adding this TOF module can make up for this defect. The TOF module can test the distance from the blocking object to the sensor and provide the coordinates of the edge in the other direction. In specific implementation, the positioning module can also use other positioning modules.
[0023] Please refer to the attached Figure 2 The utility model is preferably applied in a bilateral structure, that is, 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, and a group of TOF modules 8 are respectively arranged at both ends of the infrared transmitting end 5 and the infrared receiving end 6, 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 wires 7 adopt FFC wires (i.e. flexible flat cables, called Flexible Flat Cable, or Flat Flexible Cable).
[0024] In specific implementation, the utility model can also be applied to a single-sided structure. 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. A group of TOF modules 8 are respectively arranged at both ends of the infrared transmitting and receiving end 1 and the reflective object 2, and the TOF modules 8 are connected to each other through a connecting line 7.
[0025] The utility model can also be applied to 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 provided on the infrared transmitting end 5, and an infrared receiving LED 4 is provided on the infrared receiving end 6; the infrared transmitting LED 3 and the infrared receiving LED 4 are arranged opposite to each other; a group of TOF modules 8 are respectively provided at both ends of the infrared transmitting end 5 and the infrared receiving end 6; 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 wires 7 adopt FFC wires (i.e. flexible flat cables, called Flexible Flat Cable, or Flat Flexible Cable).
[0026] The utility model uses an additional positioning module as an aid. When the user touches the area outside the infrared touch area, that is, the black edge area, the positioning module can detect the user's touch and also trigger the touch function to supplement the infrared touch area. This can reduce the black edge silk screen of the infrared touch display device and make the edge click more accurate. At the same time, the customer's overall machine structure does not need to be changed, thereby reducing the customer's usage cost.
Claims
1. An infrared touch display device capable of eliminating touch dead zones, characterized in that: The infrared touch display device comprises an infrared transmitting LED (3), an infrared receiving LED (4) and a positioning module. The infrared transmitting LED (3) and the infrared receiving LED (4) are arranged on one side of the infrared touch display device or respectively on two opposite sides of the infrared touch display device. The positioning module is arranged at the edge of the infrared touch display device.
2. The infrared touch display device capable of eliminating touch dead zones according to claim 1, characterized in that: The positioning module adopts a TOF module (8).
3. The infrared touch display device capable of eliminating touch dead zones according to claim 1, characterized in that: The infrared touch display device has an infrared transmitting end (5) on one side, an infrared transmitting LED (3) being arranged on the infrared transmitting end (5), and an infrared receiving end (6) on the other side, an infrared receiving LED (4) being arranged on the infrared receiving end (6), the infrared transmitting LED (3) and the infrared receiving LED (4) being arranged opposite to each other, a group of positioning modules being arranged at both ends of the infrared transmitting end (5) and the infrared receiving end (6), and the infrared transmitting end (5) and the infrared receiving end (6) being connected to each other via a group of connecting wires (7).
4. The infrared touch display device capable of eliminating touch dead zones according to claim 1, characterized in that: The infrared touch display device has an infrared transmitting and receiving end (1) on one side and a reflective object (2) on the other side. The infrared transmitting LED (3) and the infrared receiving LED (4) are both arranged on the infrared transmitting and receiving end (1). A group of positioning modules are respectively arranged at both ends of the infrared transmitting and receiving end (1) and the reflective object (2). The positioning modules are connected to each other via a connecting line (7).
5. The infrared touch display device capable of eliminating touch dead zones according to claim 4, characterized in that: The reflective object (2) is made of a reflective strip, a light-guiding strip or a metal reflective material.
6. The infrared touch display device capable of eliminating touch dead zones according to claim 1, characterized in that: The infrared touch display device has an infrared transmitting end (5) on one side of the upper and lower sides and an infrared receiving end (6) on the other side, and an infrared transmitting end (5) on one side of the left and right sides and an infrared receiving end (6) on the other side. 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. A group of positioning modules are respectively provided at both ends of the infrared transmitting end (5) and the infrared receiving end (6). Adjacent infrared transmitting ends (5) and infrared receiving ends (6) are connected to each other via a group of connecting wires (7).
7. The infrared touch display device capable of eliminating touch dead zones according to any one of claims 3 to 6, characterized in that: The connecting line (7) is an FFC line.