Touch display panel and touch display device

Abstract

The utility model discloses a touch control display panel and a touch control display device, the touch control display panel can comprise a display panel and a first touch control device, the first touch control device is arranged at any corner of the display panel and detachably connected with the display panel, and the first touch control device comprises a first infrared camera and a first infrared sensor; wherein the first infrared camera is set to acquire an image of the display panel at a first shooting angle; the first infrared sensor is arranged to emit infrared light which is in a scattering shape and covers the display panel on the light emitting side of the display panel when the image collected by the first infrared camera contains a touch object, receive the infrared light reflected by the touch object and generate a corresponding electric signal.

Description

Technical Field

[0001] The utility model relates to the field of touch technology, and in particular to a touch display panel and a touch display device. Background Art

[0002] Touch screens can be divided into resistive touch screens, capacitive touch screens, surface acoustic wave touch screens, and infrared touch screens according to the sensing principle. Among them, capacitive touch screens and infrared touch screens have received more and more attention and have been widely used in various display products. However, current capacitive touch screens and infrared touch screens have the problem of high power consumption. Utility Model Content

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] An embodiment of the utility model provides a touch display panel, comprising: a display panel and a first touch device arranged at any corner of the display panel and detachably connected to the display panel, the first touch device comprising: a first infrared camera and a first infrared sensor; wherein the first infrared camera is configured to capture an image of the display panel at a first shooting angle; the first infrared sensor is configured to emit infrared light in a scattered manner and covering the display panel on the light-emitting side of the display panel when a touch object is included in the image captured by the first infrared camera, and to receive infrared light reflected back by the touch object and generate a corresponding electrical signal.

[0005] In some exemplary embodiments, the touch display panel also includes: a second touch device arranged at the center position of any frame of the display panel and detachably connected to the display panel, the second touch device including: a second infrared camera and a second infrared sensor; wherein the second infrared camera is configured to capture an image of the display panel at a second shooting angle different from the first shooting angle; the second infrared sensor is configured to emit infrared light in a scattered manner and covering the display panel on the light-emitting side of the display panel when the image captured by the second infrared camera includes the touch object, and receive infrared light reflected back by the touch object and generate a corresponding electrical signal.

[0006] In some exemplary embodiments, the display panel includes: a base, a display substrate arranged on the base, and a frame arranged around the display substrate, the frame including: a first frame and a second frame arranged opposite to each other in a first direction, a third frame and a fourth frame arranged opposite to each other in a second direction, a first corner connecting the first frame and the third frame, a second corner connecting the first frame and the fourth frame, a third corner connecting the second frame and the fourth frame, and a fourth corner connecting the second frame and the third frame, and the second direction intersects with the first direction.

[0007] In some exemplary embodiments, the first touch device is disposed at the first corner or the second corner.

[0008] In some exemplary embodiments, the second touch device is disposed at a center position of the first frame or a center position of the second frame.

[0009] In some exemplary embodiments, the touch display panel further includes: a first electrical connector and a second electrical connector, the first touch device is detachably connected to the display panel via the first electrical connector, and the second touch device is detachably connected to the display panel via the second electrical connector.

[0010] In some exemplary embodiments, the touch display panel also includes: a processor, which is respectively connected to the display panel, the first electrical connector and the second electrical connector, the first electrical connector is set as the input and output interface of the first touch device, and the second electrical connector is set as the input and output interface of the second touch device, and the processor is set to determine the touch position according to the data sent by the first touch device and the data sent by the second touch device, the data sent by the first touch device includes the image captured by the first infrared camera and the electrical signal generated by the first infrared sensor, and the data sent by the second touch device includes the image captured by the second infrared camera and the electrical signal generated by the second infrared sensor.

[0011] In some exemplary embodiments, the first electrical connector and the second electrical connector are Universal Serial Bus (USB) connectors; or, the first electrical connector and the second electrical connector are USB-typeC connectors.

[0012] In some exemplary embodiments, there is a preset distance between the geometric center of the first infrared sensor and the geometric center of the first infrared camera, and there is the preset distance between the geometric center of the second infrared sensor and the geometric center of the second infrared camera.

[0013] An embodiment of the utility model further provides a touch display device, comprising: a touch display panel according to any one of the above exemplary embodiments.

[0014] The touch display panel and touch display device provided by the embodiments of the utility model are arranged to turn on the touch device only when the image captured by the first infrared camera contains a touch object (that is, the user is recognized to perform a touch operation). The display panel and the touch device are not turned on synchronously. The touch device is in a working state (such as emitting infrared light, receiving infrared reflected light, generating electrical signals, etc.) only when the touch function is needed. This can avoid the touch device from continuously generating power consumption, thereby effectively reducing the power consumption of the touch display panel.

[0015] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings.

[0016] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0018] Figure 1A It is a schematic diagram of the cross-sectional structure of a capacitive touch display device;

[0019] Figure 1B It is a schematic diagram of the cross-sectional structure of an infrared touch display device;

[0020] Figure 2 It is a schematic diagram of a planar structure of a touch display panel in an exemplary embodiment of the utility model;

[0021] Figure 3 for Figure 2 Sectional view along AA direction;

[0022] Figure 4 A schematic diagram of the appearance of a display panel in an exemplary embodiment of the utility model;

[0023] Figure 5 It is a working schematic diagram of a touch display panel in an exemplary embodiment of the utility model;

[0024] Figure 6 is a schematic diagram of a touch control device in an exemplary embodiment of the present utility model;

[0025] Figure 7 It is a schematic structural diagram of another touch display panel in an exemplary embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the working principle of a touch display panel in an exemplary embodiment of the utility model;

[0027] Fig. 9 It is a schematic diagram of an adaptation process of a touch display panel in an exemplary embodiment of the utility model;

[0028] Fig.10 It is a schematic diagram of a planar structure of another touch display panel in an exemplary embodiment of the utility model;

[0029] Fig.11 This is a working schematic diagram of another touch display panel in an exemplary embodiment of the utility model;

[0030] Fig.12 FIG. 4 is a schematic structural diagram of another touch display panel in an exemplary embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 11—first display substrate; 12—touch panel; 13—first frame;

[0033] 14—first substrate; 21—second display substrate; 22—infrared sensor device;

[0034] 23—second frame; 24—second substrate; 10—display panel;

[0035] 20—substrate; 30—display substrate; 40—frame;

[0036] 41—first frame; 42—second frame; 43—third frame;

[0037] 44—fourth frame; 401—first corner; 402—second corner;

[0038] 403—third corner; 404—fourth corner; 51—first touch device;

[0039] 510—first touch space layer; 511—first infrared camera; 512—first infrared sensor;

[0040] 60—touch object; 61—touch position; 70—first connector;

[0041] 80—processor; 52—second touch control device; 520—second touch control space layer;

[0042] 521—second infrared camera; 522—second infrared sensor; 90—second electrical connector. DETAILED DESCRIPTION

[0043] Multiple embodiments are described in the present invention, but the description is exemplary rather than restrictive, and there may be more embodiments and implementations within the scope of the embodiments described in the present invention. Although many possible feature combinations are shown in the drawings and discussed in the exemplary embodiments, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with any other feature or element in any other embodiment, or may replace any other feature or element in any other embodiment.

[0044] The proportions of the drawings in the present invention can be used as a reference in the actual process, but are not limited to this. For example, the width-to-length ratio of the channel, the thickness and spacing of each film layer, and the width and spacing of each signal line can be adjusted according to actual needs. The number of pixels in the display substrate and the number of sub-pixels in each pixel are not limited to the numbers shown in the figures. The drawings described in the present invention are only schematic diagrams of the structure. One mode of the present invention is not limited to the shapes or values ​​shown in the drawings.

[0045] Unless otherwise defined, the technical terms or scientific terms used in the exemplary embodiments of the present utility model should be understood by people with ordinary skills in the field to which the present utility model belongs. The "first", "second" or "third" and similar words used in the embodiments of the present utility model are set to avoid confusion of constituent elements, and do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Exemplarily", "for example" or "for example" and other words are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or design.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the 'present' utility model and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The positional relationship of the constituent elements is appropriately changed according to the direction of describing each constituent element. Therefore, it is not limited to the words and sentences described in the specification, and can be appropriately replaced according to the circumstances.

[0047] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] With the continuous development of display technology, touch screens (Touch Screen Panel) have gradually spread throughout people's lives and work due to their convenient operation and other characteristics. When a user performs a touch operation, the user can touch the touch screen with a touch object such as a finger or a stylus, and identify the touch position of the finger by detecting the physical parameters of the touch screen, thereby realizing the touch function. Touch screens can be divided into resistive touch screens, capacitive touch screens, surface acoustic wave touch screens, and infrared touch screens (also called infrared touch screens) according to the sensing principle. Among them, capacitive touch screens and infrared touch screens have received more and more attention and have been widely used in various display products.

[0049] Figure 1A is a schematic diagram of a cross-sectional structure of a capacitive touch display device, such as Figure 1AAs shown, the capacitive touch display device includes: a first substrate 14, a first display substrate 11 arranged on the first substrate 14, a touch panel 12 arranged on the light-emitting side of the first display substrate 11, and a first frame 13 arranged around the first display substrate 11 and the touch panel 12. The touch panel 12 includes a touch structure, which is arranged on the encapsulation layer of the first display substrate to form a touch structure on a thin film encapsulation (Touch on Thin Film Encapsulation, Touch on TFE) structure. In this way, when the user performs a touch operation on the touch surface, the finger will take away the charge on the touch structure in the touch panel 12. Based on the principle of self-capacitance or mutual capacitance detection, the touch position of the finger is identified by detecting the change in the capacitance value of the touch structure, thereby realizing the touch function of the display device. It can be seen that during the operation of the capacitive touch display device, the first display substrate 11 and the touch panel 12 are usually turned on and work synchronously.

[0050] The principle of the infrared touch display device is to use the dense infrared rays in the X direction and the Y direction to detect and locate the touch operation. The current infrared touch display device generally adopts a specific structure in which a plurality of infrared transmitting tubes and their corresponding infrared receiving tubes are arranged on four sides. Each infrared transmitting tube corresponds to an infrared receiving tube. To achieve a higher resolution, the number of infrared transmitting tubes and infrared receiving tubes must be increased at the same time, which increases the overall volume of the infrared touch display device. Therefore, the volume of the existing infrared touch display device is restricted by the number of infrared transmitters and infrared receivers, thereby limiting the resolution of the infrared touch screen, increasing the manufacturing cost and limiting the application in display devices of larger sizes. Figure 1B FIG. 1 is a schematic diagram of a cross-sectional structure of an infrared touch display device. Figure 1BAs shown, the infrared touch display device includes: a second substrate 24, a second display substrate 21 arranged on the second substrate 24, a second frame 23 arranged around the circumferential edge of the second display substrate 21, and a plurality of infrared sensor devices 22, the plurality of infrared sensor devices 22 are respectively arranged in the side walls of the four frames of the second frame 23, each infrared sensor device 22 includes an infrared emitting tube and a corresponding infrared receiving tube, a cavity is formed inside the second frame 23, each frame of the second frame 23 may include: a first side wall (inner side wall) close to the second display substrate 21 and limiting the second display substrate 21, a second side wall located on the display side of the second display substrate 21, and a third side wall away from the second display substrate 21, the second side wall or the third side wall serves as a receiving wall, the receiving wall includes an inner side facing the cavity and an outer side away from the cavity, the inner side of the receiving wall is provided with a receiving cavity, the plurality of infrared sensor devices 22 are arranged in the receiving cavity, and the infrared sensor device 2 is configured to be able to emit infrared light and receive infrared light. In this way, the infrared rays emitted by the multiple infrared sensor devices 22 arranged on the periphery of the second display substrate 21 are cross-linked horizontally and vertically on the same horizontal plane, and a touch space layer can be formed above the display surface B of the second display substrate 21. The touch space layer includes: an infrared grid formed by infrared rays densely distributed in the X direction and the Y direction. When the user performs a touch operation in the touch space layer, the finger will block the infrared rays passing through the touch position of the finger. By detecting the corresponding infrared rays, the touch position of the finger can be determined, thereby realizing the touch function of the display device. It can be seen that in the operation of the infrared touch display device, the second display substrate 21 and the infrared sensor device 22 are synchronously turned on and work synchronously. In addition, in the infrared touch display device, since the infrared sensor device 22 is placed in the accommodating cavity formed by the second frame 23, the size and weight of the display product will be greatly increased, which is not conducive to the thinness of the display product.

[0051] The inventor of the present utility model has found that most touch display products mainly have display functions and are supplemented by touch functions. Figure 1A or Figure 1B As shown, regardless of whether the user uses the touch function, the touch panel 12 or the infrared sensor device 22 will always be in working state, which will continuously generate power consumption. In addition, the touch panel 12 or the infrared sensor device 22 is matched with the display substrate, and different products of different sizes or shapes cannot share the touch panel 12 or the infrared sensor device 22. In addition, there are some touch display products (such as capacitive touch display devices), whose touch devices are greatly affected by the size of the product. The larger the product size, the higher the cost, and it may even be impossible to manufacture due to process limitations. Therefore, it is very important to reduce the power consumption of touch display products and improve practicality.

[0052] The embodiment of the utility model provides a touch display panel and a touch display device, the touch display panel may include: a display panel and a first touch device arranged at any corner of the display panel and detachably connected to the display panel, the first touch device includes: a first infrared camera and a first infrared sensor; wherein the first infrared camera is configured to capture an image of the display panel at a first shooting angle; the first infrared sensor is configured to emit infrared light in a scattered shape and covering the display panel on the light-emitting side of the display panel when the image captured by the first infrared camera contains a touch object, and receive infrared light reflected by the touch object and generate a corresponding electrical signal. In this way, by setting the touch device to be turned on only when the image captured by the first infrared camera contains a touch object (i.e., the user is recognized to perform a touch operation), the display panel and the touch device are not turned on synchronously, and the touch device is only in a working state (such as emitting infrared light, receiving infrared reflected light, generating electrical signals, etc.) when the touch function is needed, it can avoid the touch device from continuously generating power consumption, thereby effectively reducing the power consumption of the touch display panel. In addition, since the first touch device is detachably arranged on any corner of the display panel, compared with being integrated with the display panel, it is easy to achieve a narrow frame of the display panel and can be easily adapted to products of different sizes, thus having broad application prospects.

[0053] In some exemplary embodiments, the touch display panel may further include: a second touch device disposed at the center of any frame of the display panel and detachably connected to the display panel, the second touch device may include: a second infrared camera and a second infrared sensor; wherein the second infrared camera is configured to capture an image of the display panel at a second shooting angle different from the first shooting angle; the second infrared sensor is configured to emit infrared light in a scattered manner and covering the display panel on the light-emitting side of the display panel when the image captured by the second infrared camera contains a touch object, and to receive infrared light reflected back by the touch object and generate a corresponding electrical signal. In this way, by detachably disposing the first touch device at the corner of the display panel and detachably disposing the second touch device at the center of the frame of the display panel, more touch positions can be achieved, more precise positioning can be achieved, and thus, the touch effect and touch experience can be improved.

[0054] In some exemplary embodiments, the display panel may include: a base, a display substrate arranged on the base, and a frame arranged around the display substrate, the frame may include: a first frame and a second frame arranged opposite to each other in a first direction D1, a third frame and a fourth frame arranged opposite to each other in a second direction D2, a first corner connecting the first frame and the third frame, a second corner connecting the first frame and the fourth frame, a third corner connecting the second frame and the fourth frame, and a fourth corner connecting the second frame and the third frame, the second direction intersects with the first direction.

[0055] In some exemplary embodiments, the first touch device is disposed at the first corner or the second corner.

[0056] In some exemplary embodiments, the second touch device is disposed at a center position of the first frame or a center position of the second frame.

[0057] In some exemplary embodiments, the touch display panel may further include: a first electrical connector, through which the first touch device is detachably connected to the display panel. In this way, since the first touch device is connected to the display panel through the first electrical connector (such as a USB connector) in the form of an accessory and is not disposed in the frame, there is no need to increase the size of the frame. Compared with traditional infrared touch display products, the touch display panel provided by the exemplary embodiments of the utility model can have a smaller frame.

[0058] In some exemplary embodiments, the touch display panel may further include: a second electrical connector, and the second touch device is detachably connected to the display panel through the second electrical connector. In this way, since the second touch device is connected to the display panel through the second electrical connector (such as a USB connector) in the form of an accessory and is not disposed in the frame, there is no need to increase the size of the frame. Compared with traditional infrared touch display products, the touch display panel provided by the exemplary embodiments of the utility model can have a smaller frame.

[0059] In some exemplary embodiments, the touch display panel may also include: a processor, the processor is respectively connected to the display panel, the first electrical connector and the second electrical connector, the first electrical connector is set as the input and output interface of the first touch device, the second electrical connector is set as the input and output interface of the second touch device, the processor is set to determine the touch position according to the data sent by the first touch device and the data sent by the second touch device, the data sent by the first touch device includes the image captured by the first infrared camera and the electrical signal generated by the first infrared sensor, and the data sent by the second touch device includes the image captured by the second infrared camera and the electrical signal generated by the second infrared sensor.

[0060] In some exemplary embodiments, the first electrical connector and the second electrical connector are USB connectors, or the first electrical connector and the second electrical connector are USB-type C connectors. In this way, by using lighter, thinner and smaller connectors, such as USB connectors or USB-type C connectors, as the first electrical connector and the second electrical connector, the volume of the touch device can be reduced, which facilitates the realization of a thinner display product.

[0061] In some exemplary embodiments, there is a preset distance between the geometric center of the first infrared sensor and the geometric center of the first infrared camera, and there is a preset distance between the geometric center of the second infrared sensor and the geometric center of the second infrared camera.

[0062] In some exemplary embodiments, the geometric center of at least one first infrared sensor is located between the geometric center of the first infrared camera and the geometric center of the display panel, and the geometric center of at least one second infrared sensor is located between the geometric center of the second infrared camera and the geometric center of the display panel.

[0063] The touch display panel provided by the embodiment of the utility model is described in detail below by way of examples and in conjunction with the accompanying drawings.

[0064] The present invention provides a touch display panel. Figure 2 is a schematic structural diagram of a touch display panel in an exemplary embodiment of the utility model, Figure 3 for Figure 2 The cross-sectional view along the AA axis. Figure 2 and Figure 3 As shown, the touch display panel of this exemplary embodiment may include: a display panel 10 and at least one first touch device 51 arranged at at least one corner of the display panel 10 (such as the upper right corner) and detachably connected to the display panel 10, the first touch device 51 including: a first infrared camera 511 and a first infrared sensor 511; wherein the first infrared camera 511 is configured to capture an image of the display panel 10 at a first shooting angle; the first infrared sensor 511 is configured to emit infrared light in a scattered state and covering the display panel 10 on the light-emitting side of the display panel when the image captured by the first infrared camera 511 includes a touch object 60, and receive infrared light reflected back by the touch object 60 and generate a corresponding electrical signal.

[0065] In this way, by setting the first touch device 51 to be turned on when the image captured by the first infrared camera 511 contains the touch object 60 (i.e., the user is recognized to perform a touch operation), the display panel 10 and the first touch device 51 do not work synchronously. The first touch device 51 is in a working state only when the touch function is needed (such as emitting infrared light, receiving infrared reflected light, generating electrical signals, etc.) in order to determine the touch position. In this way, it is possible to avoid the touch device from continuously generating power consumption, thereby reducing the power consumption of the touch display panel. In addition, since the first touch device 51 is set separately from the display panel 10 in the form of an accessory, compared with the integrated setting with the display panel, there is no need to increase the size of the outer frame in the display panel, which is conducive to reducing the volume of the display panel, and can facilitate the realization of a narrow frame of the display panel, and can facilitate adaptation to products of different sizes.

[0066] In some exemplary embodiments, the touch object may include at least one of a finger, other body parts, an artificial finger, a stylus, or a touch stick, etc. In some exemplary embodiments, in the first touch device, the number of the first infrared sensors may be one or more.

[0067] In some exemplary embodiments, Figure 3 As shown, the first touch device 51 may be located at the periphery of the display area of ​​the display panel 10 , for example, may be disposed on the frame of the display panel 10 through the first connector 70 .

[0068] In some exemplary embodiments, Figure 3 As shown, the first touch device 51 is detachably connected to the display panel 10 via the first electrical connector 70. For example, the first electrical connector 70 may be a USB connector or a USB-type C connector. In this way, by using a lighter, thinner and smaller connector, such as a USB connector or a USB-type C connector, as the first electrical connector, the volume of the first touch device can be reduced, which facilitates the realization of a thinner display product.

[0069] In some exemplary embodiments, Figure 3 As shown, the display panel 10 may include: a base 20 , a display substrate 30 disposed on the base 20 , and a frame 40 disposed around the display substrate 30 .

[0070] In some exemplary embodiments, the display substrate 30 may be a liquid crystal display (LCD) substrate, or an organic light emitting diode (OLED) display substrate, or a plasma display device (PDP) display substrate, or an electrophoretic display (EPD) display substrate. In some exemplary embodiments, the display substrate 30 is an OLED display substrate, and the OLED display substrate may include a driving circuit layer disposed on a substrate, a light emitting structure layer disposed on the driving circuit layer, and an encapsulation layer disposed on the light emitting structure layer. The driving circuit layer of each sub-pixel may include a plurality of transistors and storage capacitors constituting a pixel driving circuit, and the pixel driving circuit is respectively connected to a scanning signal line, a data signal line, and a light emitting signal line, and the pixel driving circuit is configured to receive a data voltage transmitted by the data signal line under the control of the scanning signal line and the light emitting signal line, and output a corresponding current to the sub-pixel. The light emitting structure layer may include an anode, a pixel definition layer, an organic light emitting layer, and a cathode, the anode is connected to the drain electrode of the driving transistor through a via, the organic light emitting layer is connected to the anode, and the cathode is connected to the organic light emitting layer, and the organic light emitting layer emits light of corresponding colors under the drive of the anode and the cathode. The encapsulation layer may include a stacked first encapsulation layer, a second encapsulation layer and a third encapsulation layer. The first encapsulation layer and the third encapsulation layer may be made of inorganic materials, the second encapsulation layer may be made of organic materials, and the second encapsulation layer is arranged between the first encapsulation layer and the third encapsulation layer to ensure that external water vapor cannot enter the light-emitting structure layer.

[0071] In some exemplary embodiments, Figure 4 As shown, the display substrate 30 may include a first edge (such as an upper edge) and a second edge (such as a lower edge) relatively arranged in a first direction D1, and a third edge (such as a right edge) and a fourth edge (such as a left edge) relatively arranged in a second direction D2, and adjacent edges are connected by arc-shaped chamfers to form a rounded quadrilateral shape.

[0072] In some exemplary embodiments, Figure 4 As shown, the frame body 40 may include: a first frame 41 (such as an upper frame) and a second frame 42 (such as a lower frame) relatively arranged in the first direction D1, a third frame 43 (such as a right frame) and a fourth frame 44 (such as a left frame) relatively arranged in the second direction D2, a first corner 401 (such as an upper right corner) connecting the first frame 41 and the third frame 43, a second corner 402 (such as an upper left corner) connecting the first frame 41 and the fourth frame 44, a third corner 403 (such as a lower left corner) connecting the second frame 42 and the fourth frame 44, and a fourth corner 404 (such as a lower right corner) connecting the second frame 42 and the third frame 43, and the second direction D2 intersects with the first direction D1.

[0073] In some exemplary embodiments, the first touch device 51 may be located at a first corner 401 (such as the upper right corner), a second corner 402 (such as the upper left corner), a third corner 403 (such as the lower left corner), or a fourth corner 404 (such as the lower right corner) in the frame 40 of the display panel 10. Figure 2 and Figure 4 As shown, the first touch device 51 can be located at the first corner 401 (such as the upper right corner) or the second corner 402 (such as the upper left corner). In this way, when the camera angle of the first infrared camera 511 in the first touch device 51 is greater than or equal to 90 degrees, it can ensure that the entire display area of ​​the display panel 10 can be photographed, which can minimize the impact on the layout and installation of the product.

[0074] In some exemplary embodiments, the first and second frames may be parallel to the second direction D2, the third and fourth frames may be parallel to the first direction D1, and the first direction D1 and the second direction D2 intersect.

[0075] In some exemplary embodiments, the first direction D1 may be the extension direction of the data signal line in the display panel (vertical column direction), the second direction D2 may be the extension direction of the scan signal line in the display panel (horizontal row direction), and the first direction D1 and the second direction D2 may be perpendicular to each other.

[0076] In some exemplary embodiments, Figure 2 , Figure 3 and Figure 5 As shown, when the user uses the touch object 60 to perform a touch operation, the image collected by the first infrared camera 511 in the first touch device 51 will include the touch object 60 (i.e., the user is recognized to perform a touch operation). At this time, the first touch device 51 starts to work, and the first infrared sensor 512 in the first touch device 51 can emit infrared light that is scattered and covers the display panel 10, and form a first touch space layer 510 above the light-emitting side of the display panel 10. The touch object 60 will block part of the infrared light, and the first infrared sensor 512 in the first touch device 51 can receive the infrared light reflected back by the touch object 60 and generate a corresponding electrical signal. Therefore, the touch position 61 can be accurately determined to realize the touch function.

[0077] In some exemplary embodiments, Figure 6 As shown, in a first touch device 51, the number of the first infrared sensors 512 can be one or more. For example, the number of the first infrared sensors 512 can be multiple, so that more accurate positioning and more touch points can be achieved, thereby providing a better touch effect.

[0078] In some exemplary embodiments, Figure 7As shown, the touch display panel may further include: a processor 80 connected to the display panel 10, and a first electrical connector 70 connected to the processor 80 and the first touch device 51 respectively, the first electrical connector 70 is set as the input and output interface of the first touch device 51, the processor 80 is set to determine the touch position at least according to the data sent by the first touch device 51, and the data sent by the first touch device 51 may include the image collected by the first infrared camera 511 and the electrical signal generated by the first infrared sensor 512. In this way, by setting the first electrical connector, the first touch device can be detachably connected to the display panel, and the display panel, the first touch device and the processor can be connected together, so as to facilitate the transmission of signals and data to the display panel.

[0079] In some exemplary embodiments, the processor may be a central processing unit (CPU), other general-purpose processors, a digital signal processor (DSP), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, application-specific integrated circuits, etc. A general-purpose processor may be a microprocessor (MPU) or the processor may also be any conventional processor, etc.

[0080] like Figure 2 , Figure 3 and Figure 8As shown, when the user uses the touch object 60 to perform a touch operation, the image captured by the first infrared camera 511 in the first touch device 51 will include the touch object 60 (that is, the user is recognized to perform a touch operation). At this time, the first infrared sensor 512 in the first touch device 51 starts to work, and the first infrared sensor 512 in the first touch device 51 can emit infrared light in a scattered state and covering the display panel 10, and form a first touch space layer 510 above the light emitting side of the display panel 10. The touch object 60 will block part of the infrared light, and the first infrared sensor 512 in the first touch device 51 can receive the infrared light reflected back by the touch object 60 and generate a corresponding electrical signal. Thus, the touch position 61 can be accurately determined. During the operation of the first infrared camera 511 and the first infrared sensor 512, in the display area of ​​the display panel 10, the first infrared camera 511 can identify a circular touch position 61, the circular touch position 61 having a straight line mn as a diameter, a center point t as a circle center, an azimuth angle from point n to the origin O(p) of the first touch device 51 as a first angle b, and an azimuth angle from point m to the origin O(p) of the first touch device 51 as a second angle c. Next, according to the time when the first infrared sensor 512 emits infrared light at the first angle b and the second angle c and receives the reflected infrared light, and the wavelength of the infrared light, the lengths of the straight line Om and the straight line On can be obtained, and then combined with the first angle b and the second angle c, the coordinates of the point m and the point n can be calculated respectively, thereby the coordinates of the center point t between the point m and the point n can be calculated, and thus the coordinates of the center point t of the touch position 61 are obtained, and the touch position is determined. When the touch position 61 is smaller, the straight line mn thereon is also shorter, the first angle b and the second angle c decrease, and the corresponding center point t is closer to the coordinates of point n. At this time, the coordinates of point n can be used as the coordinates of the center point t of the touch position 61, which can simplify the calculation process.

[0081] In some exemplary embodiments, the number of the first infrared sensors 512 in the first touch device 5 may be one or more. In the process of touch recognition, ensure that the angles of the first infrared camera 511 and the first infrared sensor 512 in the first touch device 51 are consistent. Then, taking the first touch device 51 as an example, when the first infrared camera 511 determines the first angle b and the second angle c, the first infrared sensor 512 in the range is correspondingly turned on, so that the time when the first infrared sensor 512 in the range emits infrared light and receives the reflected infrared light, and the wavelength of the infrared light are measured to obtain the coordinates of the center point t of the touch position 61; taking the first touch device 51 as an example, when the first infrared camera 511 determines the first angle b and the second angle c, the angle sensing calculation can be realized by controlling the placement motor, and the corresponding data can be obtained. Compared with some infrared touch display devices, the number of first infrared sensors 512 is greatly reduced. So far, it can be determined that the touch display panel provided by the embodiment of the utility model can locate the touch position.

[0082] In some exemplary embodiments, a preset distance may be set between the geometric center of the first infrared sensor and the geometric center of the first infrared camera, and the preset distance may be set as small as possible so that the geometric center O of the first infrared camera and the geometric center p of the first infrared sensor are approximately located at the same center of a circle. In this way, more accurate touch positioning can be achieved.

[0083] In some exemplary embodiments, Fig. 9 As shown, taking the first touch device 51 installed in the upper right corner of the frame of the display panel 10 as an example, when the first touch device 51 is installed on the display panel 10, two points can be selected on the diagonal line of the display area of ​​the display panel 10 for touch operation, which are the first vertex d (x1, y1) and the second vertex e (x2, y2), and the coordinates of the two points are collected according to the above description, so that a complete rectangular touch area can be formed on the light-emitting side of the display panel 10. It can be seen that the first touch device 51 can be adapted to display panels 10 of different sizes, so that the touch display panel provided by the embodiment of the utility model has a wide range of application prospects.

[0084] The present invention also provides a touch display panel. Fig.10 FIG. 1 is a schematic diagram of another structure of a touch display panel in an exemplary embodiment of the present utility model. Fig.10 As shown, the main structure of the touch display panel of this embodiment is Figure 2 and Figure 3 The main structure of the touch display panel shown is basically the same, except that the touch display panel of this embodiment further includes a second touch device.

[0085] In some exemplary embodiments, Fig.10 As shown, the touch display panel may include: a display panel 10 and at least one first touch device 51 arranged at any corner of the display panel 10 and detachably connected to the display panel 10, the first touch device 51 including: a first infrared camera 511 and a first infrared sensor 512; wherein the first infrared camera 511 is configured to capture an image of the display panel 10 at a first shooting angle; the first infrared sensor 512 is configured to emit infrared light in a scattered state and covering the display panel 10 on the light-emitting side of the display panel when the image captured by the first infrared camera 511 contains a touch object 60, and receive infrared light reflected back by the touch object 60 and generate a corresponding electrical signal. The touch display panel may also include: at least one second touch device 52 disposed at the center of any frame of the display panel 10 and detachably connected to the display panel 10, the second touch device 52 including: a second infrared camera 521 and a second infrared sensor 522; wherein the second infrared camera 521 is configured to capture an image of the display panel 10 at a second shooting angle different from the first shooting angle; the second infrared sensor 522 is configured to emit infrared light in a scattered manner and covering the display panel 10 when the image captured by the second infrared camera 521 contains a touch object, and to receive infrared light reflected back by the touch object and generate a corresponding electrical signal. In this way, by detachably disposing the first touch device at the corner of the display panel and detachably disposing the second touch device at the center of the frame of the display panel, more touch positions can be achieved, more accurate positioning can be achieved, and thus, the touch effect and touch experience can be improved. By setting the first infrared sensor to start working when the image captured by the first infrared camera in the first touch device contains a touch object, and setting the second infrared sensor to start working when the image captured by the second infrared camera in the second touch device contains a touch object, it is possible to avoid the touch device from continuously generating power consumption, thereby reducing the power consumption of the touch display panel. In addition, since the first touch device 51 and the second touch device are both separately set from the display panel in the form of accessories, compared with the integrated setting with the display panel, there is no need to increase the size of the outer frame in the display panel, which is conducive to reducing the volume of the display panel, and can facilitate the realization of a narrow frame of the display panel, and can facilitate adaptation to products of different sizes.

[0086] In some exemplary embodiments, the second touch device 52 may be disposed at the center of any frame of the frame 40 of the display panel 10. For example, the second touch device 52 may be located at the middle of the first frame 41 or the middle of the second frame 42 of the frame 40. Figure 4 and Fig.10As shown, the second touch device 52 can be located in the middle of the first frame 41 of the frame body 40 of the display panel 10. Since users usually watch the touch display panel in the middle, by arranging the second touch device 52 in the middle of the first frame 41, when the user performs a touch operation, it is easy to detect the touch position.

[0087] In some exemplary embodiments, the touch display panel may further include: a second electrical connector, and the second touch device is detachably connected to the display panel through the second electrical connector. In this way, since the second touch device is connected to the display panel through the second electrical connector (such as a USB connector) in the form of an accessory and is not disposed in the frame, there is no need to increase the size of the frame. Compared with traditional infrared touch display products, the touch display panel provided by the exemplary embodiments of the utility model can have a smaller frame.

[0088] In some exemplary embodiments, the second electrical connector is a USB connector, or a USB-type C connector. In this way, by using a lighter, thinner and smaller connector as the second electrical connector, the volume of the touch device can be reduced, which facilitates the realization of a thinner display product.

[0089] In some exemplary embodiments, the infrared camera has a certain shooting angle, such as Fig.10 As shown, the first infrared camera 511 in the first touch device 51 shoots at a first shooting angle a1, and the second infrared camera 521 in the second touch device 52 shoots at a second shooting angle a2. Since the first infrared camera 511 and the second infrared camera 521 are located at different positions, the second shooting angle a2 is different from the first shooting angle a1. The range of the second shooting angle a2 and the first shooting angle a1 must at least include the entire display area of ​​the display panel 10. In actual applications, since the first touch device 51 is located at the corner of the frame, when the first shooting angle a1 is greater than or equal to 90 degrees, the entire display area of ​​the display panel 10 can be photographed, thereby minimizing the impact on the layout and installation of the product. For example, the second shooting angle a2 is greater than the first shooting angle a1.

[0090] In some exemplary embodiments, Fig.10 and Fig.11As shown, when the user uses the touch object 60 to perform a touch operation, the image captured by the first infrared camera 511 in the first touch device 51 and the image captured by the second infrared camera 521 in the second touch device 52 will both contain the touch object 60 (i.e., the user is recognized to perform a touch operation). At this time, the first infrared sensor 512 in the first touch device 51 starts to work, and the first infrared sensor 512 can emit infrared light in a scattered shape and covering the display panel 10, and form a first touch space layer 510 above the light-emitting side of the display panel 10. The second infrared sensor 522 in the second touch device 52 starts to work, and the second infrared sensor 522 can emit infrared light in a scattered shape and covering the display panel 10, and form a second touch space layer 520 above the light-emitting side of the display panel 10. The touch object 60 will block part of the infrared light, and the first infrared sensor 512 in the first touch device 51 and the second infrared sensor 522 in the second touch device 52 can receive the infrared light reflected back by the touch object 60 and generate a corresponding electrical signal. Therefore, the touch position 61 can be accurately determined to realize the touch function.

[0091] In some exemplary embodiments, Fig.12 As shown, the touch display panel may further include: a processor 80 connected to the display panel 10, and a first electrical connector 70 connected to the processor 80 and the first touch device 51 respectively, the first electrical connector 70 is configured as an input and output interface of the first touch device 51, the processor 80 is configured to determine the touch position at least according to the data sent by the first touch device 51, and the data sent by the first touch device 51 may include the image collected by the first infrared camera 511 and the electrical signal generated by the first infrared sensor 512. The touch display panel may further include: a second electrical connector 90 connected to the processor 80 and the second touch device 52 respectively, the second electrical connector 90 is configured as an input and output interface of the second touch device 52, the processor 80 is configured to determine the touch position according to the data sent by the first touch device 51 and the data sent by the second touch device 52, the data sent by the second touch device 52 includes the image collected by the second infrared camera 521 and the electrical signal generated by the second infrared sensor 522. In this way, by setting a first electrical connector, the first touch device can be detachably connected to the display panel, and the display panel, the first touch device and the processor can be connected together, so as to facilitate the transmission of signals and data to the display panel, and, by setting a second electrical connector, the second touch device can be detachably connected to the display panel, and the display panel, the second touch device and the processor can be connected together, so as to facilitate the transmission of signals and data to the display panel.

[0092] The present invention also provides a touch display panel. The main structure of the touch display panel in this embodiment is Fig.10 The main structure of the touch display panel shown in the figure is basically the same, except that the touch display panel of this embodiment may further include another first touch device, that is, the touch display panel of this embodiment may include a display panel and two first touch devices and one second touch device detachably connected to the display panel, and one first touch device may be arranged at a first corner of the frame of the display panel (such as Fig.10 ), another first touch device can be arranged at a second corner of the frame of the display panel (not shown), and a second touch device can be arranged at a center position of the first frame of the frame of the display panel (as shown Fig.10 as shown) or the center position of the second frame.

[0093] Based on the same utility model concept, an embodiment of the utility model further provides a touch display device, which may include: a touch display panel described in one or more of the above embodiments.

[0094] In an exemplary embodiment, the touch display device may be an infrared touch display device.

[0095] In an exemplary embodiment, the touch display device can be an electronic interactive whiteboard (such as a conference whiteboard, a teaching whiteboard, etc.), a tablet computer, a mobile phone, a television, a display, a laptop computer, an electronic blackboard, an electronic signature wall, a digital photo frame, a navigator, and other products or components with touch functions and display functions. In actual applications, users can use touch objects such as fingers and styluses to operate on the working surface of the touch display device (such as the display surface, the touch space layer). The touch display device can not only accurately locate the touch position formed on the working surface during the user's touch operation, but also can display accordingly based on the touch position. Other essential components of the touch display device should be understood by ordinary technicians in this field, and will not be repeated here, nor should they be used as limitations on the utility model. The implementation of the touch display device can refer to the above-mentioned embodiments of the touch display panel, and the repeated parts will not be repeated.

[0096] Although the implementation methods disclosed in the present invention are as above, the contents are only implementation methods adopted to facilitate the understanding of the present invention, and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the scope of patent protection of the present invention shall still be defined by the attached claims.

Claims

1. A touch display panel, characterized in that: include: A display panel and a first touch device arranged at any corner of the display panel and detachably connected to the display panel, the first touch device comprising: a first infrared camera and a first infrared sensor; wherein the first infrared camera is configured to capture an image of the display panel at a first shooting angle; the first infrared sensor is configured to emit infrared light in a scattered manner and covering the display panel on the light-emitting side of the display panel when the image captured by the first infrared camera contains a touch object, and receive the infrared light reflected back by the touch object and generate a corresponding electrical signal.

2. The touch display panel according to claim 1, characterized in that: The touch display panel also includes: a second touch device arranged at the center position of any frame of the display panel and detachably connected to the display panel, the second touch device including: a second infrared camera and a second infrared sensor; wherein the second infrared camera is configured to capture an image of the display panel at a second shooting angle different from the first shooting angle; the second infrared sensor is configured to emit infrared light in a scattered manner and covering the display panel on the light-emitting side of the display panel when the image captured by the second infrared camera contains the touch object, and receive infrared light reflected back by the touch object and generate a corresponding electrical signal.

3. The touch display panel according to claim 2, characterized in that: The display panel includes: a base, a display substrate arranged on the base, and a frame arranged around the display substrate, the frame including: a first frame and a second frame arranged opposite to each other in a first direction, a third frame and a fourth frame arranged opposite to each other in a second direction, a first corner connecting the first frame and the third frame, a second corner connecting the first frame and the fourth frame, a third corner connecting the second frame and the fourth frame, and a fourth corner connecting the second frame and the third frame, the second direction intersects with the first direction.

4. The touch display panel according to claim 3, characterized in that: The first touch device is disposed at the first corner or the second corner.

5. The touch display panel according to claim 3 or 4, characterized in that: The second touch device is disposed at a center position of the first frame or a center position of the second frame.

6. The touch display panel according to claim 2, characterized in that: The touch display panel further includes: a first electrical connector and a second electrical connector, the first touch device is detachably connected to the display panel via the first electrical connector, and the second touch device is detachably connected to the display panel via the second electrical connector.

7. The touch display panel according to claim 6, characterized in that: The touch display panel also includes: a processor, which is respectively connected to the display panel, the first electrical connector and the second electrical connector, the first electrical connector is set as the input and output interface of the first touch device, and the second electrical connector is set as the input and output interface of the second touch device, and the processor is set to determine the touch position according to the data sent by the first touch device and the data sent by the second touch device, the data sent by the first touch device includes the image captured by the first infrared camera and the electrical signal generated by the first infrared sensor, and the data sent by the second touch device includes the image captured by the second infrared camera and the electrical signal generated by the second infrared sensor.

8. The touch display panel according to claim 7, characterized in that: The first electrical connector and the second electrical connector are USB connectors; or, the first electrical connector and the second electrical connector are USB-typeC connectors.

9. The touch display panel according to claim 2, characterized in that: There is a preset distance between the geometric center of the first infrared sensor and the geometric center of the first infrared camera, and there is the preset distance between the geometric center of the second infrared sensor and the geometric center of the second infrared camera.

10. A touch display device, characterized in that: include: A touch display panel as claimed in any one of claims 1 to 9.

Images