Touch display device and terminal equipment

Abstract

The present disclosure relates to a touch display device and a terminal device, and relates to the field of touch technology. The touch display device includes a display panel, a frame, an infrared sensing device and an infrared filter strip, the display panel has a first surface and a second surface opposite to each other, and the display panel includes a display area and a peripheral area; the frame has a plurality of frame strips including a main body, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are connected to the surface of the main body close to the display panel; the first limiting portion is located on the side of the first surface away from the second surface; the second limiting portion is located on the side of the first limiting portion close to the second surface; the frame strip includes a first frame strip and a second frame strip arranged oppositely; the infrared sensing device is arranged in a limiting groove of the frame strip and includes an infrared sensing unit, and the infrared sensing unit is at least partially located between the first surface and the first limiting portion; at least a partial area of ​​the infrared filter strip is defined between the first limiting portion and the first surface of at least one frame strip, and the infrared filter strip is in direct contact with the first surface.

Description

Technical Field

[0001] The present disclosure relates to the field of touch technology, and in particular to a touch display device and a terminal equipment. Background Art

[0002] At present, display devices with touch functions have been widely used in various electronic devices. Users can control the screen displayed by the display device through touch operations such as fingers or styluses, thereby realizing human-computer interaction. However, for large-sized display devices such as electronic whiteboards, the capacitive touch method has a complex structure, blocks light, reduces brightness, and is easily affected by factors such as static electricity, magnetic fields, and unstable voltages, and has low reliability.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a touch display device and a terminal device, which can realize the touch function through infrared rays and improve the brightness and reliability.

[0005] According to one aspect of the present disclosure, a touch display device is provided, comprising:

[0006] A display panel having a first surface and a second surface opposite to each other, and the display panel comprises a display area and a peripheral area outside the display area; the area of ​​the first surface located in the display area is used for emitting light;

[0007] A frame, formed by a plurality of frame strips surrounding the display panel; the frame strip comprises a main body, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion being connected to a surface of the main body close to the display panel; the first limiting portion is located on a side of the first surface away from the second surface, and extends into the peripheral area; the second limiting portion is located on a side of the first limiting portion close to the second surface, and a limiting groove is formed between the first limiting portion and the first limiting portion; the frame strip comprises a first frame strip and a second frame strip arranged opposite to each other;

[0008] an infrared sensing device, disposed in the limiting groove of the frame bar, and comprising an infrared sensing unit, wherein the infrared sensing unit is at least partially located between the first surface and the first limiting portion; one of the infrared sensing unit in the limiting groove of the first frame bar and the infrared sensing unit in the limiting groove of the second frame bar is used to emit infrared rays, and the other is used to receive infrared rays;

[0009] Infrared filter strip, at least a partial area of ​​the infrared filter strip is defined between the first limiting portion of at least one of the frame strips and the first surface, the infrared filter strip is located on a side of the infrared sensing device close to the display panel, and the infrared filter strip is in direct contact with the first surface.

[0010] In an exemplary embodiment of the present disclosure, the first limiting portion is provided with a first slot; and the infrared filter strip comprises:

[0011] A body, defined between the first limiting portion and the first surface;

[0012] The first plug-in portion is arranged on a surface of the main body close to the first limiting portion, and the first plug-in portion is plugged into the first slot.

[0013] In an exemplary embodiment of the present disclosure, the side wall of the first slot shrinks in a direction away from the first surface, and the shape of the first plug-in portion matches the shape of the slot.

[0014] In an exemplary embodiment of the present disclosure, the display panel includes:

[0015] Display substrate;

[0016] A protective cover plate is provided on one side of the display substrate; the surface of the protective cover plate facing away from the display substrate is the first surface, and the surface of the display substrate facing away from the protective cover plate is the second surface; the protective cover plate is provided with a second slot, and the second slot is located in the peripheral area;

[0017] The infrared filter strip also includes:

[0018] The second plug-in portion is disposed on a surface of the body close to the first surface, and the second plug-in portion is plugged into the second slot.

[0019] In an exemplary embodiment of the present disclosure, an orthographic projection of the infrared filter strip on the display panel is located within the peripheral area.

[0020] In an exemplary embodiment of the present disclosure, the surface of the body close to the first surface includes a first area and a second area; the second plug-in portion is provided in the first area; and the infrared filter strip further includes:

[0021] The buffer layer is disposed in the second region and directly contacts the first surface.

[0022] In an exemplary embodiment of the present disclosure, the material of the buffer layer includes foam glue.

[0023] In an exemplary embodiment of the present disclosure, the infrared sensing device further includes:

[0024] The driving board is arranged in the limiting groove and is detachably connected to the first limiting part and the second limiting part; the infrared sensing part is arranged in a partial area of ​​the surface of the driving board away from the display panel.

[0025] In an exemplary embodiment of the present disclosure, the infrared filter strip further includes:

[0026] A mounting portion, attached to and connected to the driving plate;

[0027] A connecting portion connects the main body and the mounting portion.

[0028] In an exemplary embodiment of the present disclosure, the mounting portion and the driving plate are connected by screws penetrating the mounting portion and the driving plate.

[0029] In an exemplary embodiment of the present disclosure, the second limiting portion is provided with a second slot; and the infrared filter strip further comprises:

[0030] The mounting portion is provided with a second plug-in portion, and the second plug-in portion is plugged into the second slot;

[0031] A connecting portion connects the main body and the mounting portion.

[0032] In an exemplary embodiment of the present disclosure, at least a partial area of ​​the connection portion is located on a side of the first surface close to the second surface, and abuts against the display panel.

[0033] In an exemplary embodiment of the present disclosure, the display panel includes a backlight module and a display substrate, wherein the display substrate includes an array substrate and a liquid crystal layer and a color filter layer located on a side of the array substrate away from the backlight module;

[0034] The touch display device further includes:

[0035] A back plate, the frame and the backlight module are arranged on the back plate, an inner frame is arranged on one side of the back plate close to the backlight module, and the display panel is confined within the inner frame.

[0036] In an exemplary embodiment of the present disclosure, the inner wall of the inner frame is provided with a supporting ridge, the backlight module is provided between the supporting ridge and the back plate, and the display substrate is provided on the supporting ridge.

[0037] In an exemplary embodiment of the present disclosure, the back plate is provided with a boss located outside the inner frame, the frame is provided with a clamping hole, and the boss is clamped in the clamping hole.

[0038] According to one aspect of the present disclosure, a terminal device is provided, comprising any one of the touch display devices described above.

[0039] In the touch display device and terminal device disclosed in the present invention, an infrared sensing device that can emit infrared rays and an infrared sensing device that receives infrared rays are respectively arranged in two opposite frame strips in the frame, and the infrared sensing units of the two are located on the side of the first surface away from the second surface. When no touch operation is performed, one of the two opposite infrared sensing devices emits infrared rays and the other receives infrared rays. When a touch operation is performed, obstacles such as fingers or styluses block the infrared rays, so that the touch position can be determined according to the position of the infrared sensing device to achieve the touch operation. Since infrared rays are used for sensing, the influence of external factors such as magnetic fields and static electricity can be avoided, the reliability of touch control can be improved, and there is no need to set touch electrodes in the capacitive touch structure to avoid blocking the light emitted from the first surface.

[0040] At the same time, the infrared sensing unit is at least partially located between the first surface and the first limiting portion, so that infrared rays can pass through the infrared filter strip, thereby filtering out stray light in the infrared rays emitted or received by the infrared sensing device through the infrared filter strip to avoid affecting the accuracy of touch.

[0041] In addition, the edge of the display panel can be protected by the frame, and the space in the frame can be used to limit the infrared sensing device and the infrared filter strip, saving space. The limiting groove formed by the first limiting portion and the second limiting portion can be used to limit the infrared sensing device, and the area extending from the first limiting portion to the peripheral area and at least a part of the area of ​​the infrared filter strip on the first surface can be used to limit the infrared filter strip, so as to avoid setting other structures for limiting the infrared filter strip between the infrared filter strip and the first surface, and avoid the distance between the infrared filter strip and the first surface being too large, so that the distance between the infrared sensing unit and the first surface is increased accordingly, so that the infrared rays emitted and received can be as close to the first surface as possible, and the touch operation is prevented from being triggered when the distance from the touch display device is far away.

[0042] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0044] Figure 1 It is a schematic diagram of an embodiment of the touch display device disclosed in the present invention.

[0045] Figure 2 for Figure 1Schematic diagram of a frame strip in an embodiment of the present invention.

[0046] Figure 3 It is a schematic diagram of another embodiment of the touch display device disclosed in the present invention.

[0047] Figure 4 It is a schematic diagram of another embodiment of the touch display device disclosed in the present invention.

[0048] Figure 5 for Figure 4 Schematic diagram of the frame strip of the embodiment

[0049] Description of reference numerals:

[0050] 1. display panel; 11. backlight module; 12. display substrate; 13. adhesive layer; 14. protective cover plate; 101. first surface; 102. second surface;

[0051] 2. frame; 21. frame strip; 211. main body; 212. first limiting portion; 2121. first slot; 2122. first groove; 213. second limiting portion; 2131. second slot; 2132. second groove; 22. card hole; 100. limiting groove;

[0052] 3. Infrared sensing device; 31. Driving board; 32. Infrared sensing unit;

[0053] 4. infrared filter strip; 41. body; 411. first plug-in portion; 42. mounting portion; 421. second plug-in portion; 43. connecting portion;

[0054] 5. back plate; 51. boss;

[0055] 6. Inner frame; 61. Support edge;

[0056] 7. Buffer layer. DETAILED DESCRIPTION

[0057] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0058] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0059] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0060] The present disclosure provides a touch display device, such as Figure 1-Figure 5 As shown, the touch display device may include a display panel 1, a frame 2, an infrared sensing device 3 and an infrared filter strip 4, wherein:

[0061] The display panel 1 has a first surface 101 and a second surface 102 opposite to each other; the display panel 1 includes a display area and a peripheral area outside the display area; the first surface 101 is located in the area of ​​the display area for emitting light;

[0062] The frame 2 is formed by a plurality of frame strips 21 surrounding the display panel 1; the frame strip 21 includes a main body 211, a first limiting portion 212 and a second limiting portion 213, the first limiting portion 212 and the second limiting portion 213 are connected to the surface of the main body 211 close to the display panel 1; the first limiting portion 212 is located on a side of the first surface 101 away from the second surface 102, and extends to the inside of the peripheral area; the second limiting portion 213 is located on a side of the first limiting portion 212 close to the second surface 102, and a limiting groove 100 is formed between the second limiting portion 213 and the first limiting portion 212; the frame strip 21 includes a first frame strip and a second frame strip arranged opposite to each other;

[0063] The infrared sensing device 3 is disposed in the limiting groove 100 of the frame strip 21 and includes an infrared sensing unit 32. The infrared sensing unit 32 is at least partially located between the first surface 101 and the first limiting portion 212. One of the infrared sensing unit 32 in the limiting groove 100 of the first frame strip and the infrared sensing unit 32 in the limiting groove 100 of the second frame strip is used to emit infrared rays, and the other is used to receive infrared rays.

[0064] An infrared filter strip 4 is defined between the first limiting portion 212 of at least one frame strip 21 and the first surface 101 . The infrared filter strip 4 is located on a side of the infrared sensing device 3 close to the display panel 1 , and the infrared filter strip 4 is in direct contact with the first surface 101 .

[0065] In the touch display device of the embodiment of the present disclosure, an infrared sensing device 3 that can emit infrared rays and an infrared sensing device 3 that receives infrared rays are respectively arranged in two opposite frame strips 21 in the frame 2, and the infrared sensing units 32 of the two are both located on the side of the first surface 101 away from the second surface 102. When no touch operation is performed, one of the two opposite infrared sensing devices 3 emits infrared rays and the other receives infrared rays. When a touch operation is performed, the infrared rays are blocked by obstacles such as fingers or styluses, so that the touch position can be determined according to the position of the infrared sensing device 3 to achieve the touch operation. Since infrared rays are used for sensing, the influence of external factors such as magnetic fields and static electricity can be avoided, the reliability of touch control can be improved, and there is no need to set touch electrodes in the capacitive touch structure to avoid blocking the light emitted by the first surface 101.

[0066] At the same time, the infrared sensing unit 32 is at least partially located between the first surface 101 and the first limiting portion 212, so that infrared rays can pass through the infrared filter strip 4, thereby filtering out stray light in the infrared rays emitted or received by the infrared sensing device 3 through the infrared filter strip 4 to avoid affecting the accuracy of touch.

[0067] In addition, the edge of the display panel 1 can be protected by the frame 2, and the space in the frame 2 can be used to limit the infrared sensing device 3 and the infrared filter strip 4, saving space. The limiting groove 100 formed by the first limiting portion 212 and the second limiting portion 213 can be used to limit the infrared sensing device 3, and the area extending from the first limiting portion 212 to the peripheral area and the first surface 101 can be used to limit at least a part of the area of ​​the filter strip, so as to avoid setting other structures for limiting the infrared filter strip 4 between the infrared filter strip 4 and the first surface 101, which causes the infrared filter strip 4 to be raised, and avoid the distance between the filter strip and the first surface 101 being too large, so that the distance between the infrared sensing unit 32 and the first surface 101 is correspondingly increased, so that the infrared rays emitted and received can be as close to the first surface 101 as possible, and the touch operation is prevented from being triggered when the distance from the touch display device is far away.

[0068] The following is a detailed description of each part of the touch display device disclosed in the present invention:

[0069] like Figure 1 , Figure 3 and Figure 4As shown, the display panel 1 has a first surface 101 and a second surface 102 facing each other. The display panel 1 may be a liquid crystal display panel (LCD), an organic light emitting diode (OLED) display panel 1, or a micro light emitting diode (Micro LED) display panel 1, etc., and its type is not particularly limited here, as long as it can display images. At the same time, the display panel 1 can be divided into at least a display area and a peripheral area, and the peripheral area is located outside the display area. For example, the peripheral area is arranged around the display area. The display area can be used to emit light to display an image, and the area of ​​the first surface 101 located in the display area can be the first surface 101, so that light can be emitted from a part of the first surface 101 so that the user can view the image.

[0070] like Figure 3 and Figure 4 As shown, in some embodiments of the present disclosure, the display panel 1 is a liquid crystal display panel, which may include a backlight module 11 and a display substrate 12, wherein:

[0071] The backlight module 11 can be used as a light source for the display panel 1 to emit light. It can adopt a side-entry structure or a direct-down structure. There is no special limitation here, as long as it can emit light to the display substrate 12. The portion of the display substrate 12 located in the display area can be used to modulate and demodulate the light emitted by the backlight module 11 to display an image. The display substrate 12 may include an array substrate and a color filter substrate arranged in a pair of boxes. The array substrate is located between the color filter substrate and the backlight module 11. A liquid crystal layer located in the display area is provided between the array substrate and the color filter substrate. A pixel electrode and a common electrode may also be provided between the array substrate and the color filter substrate. At the same time, the backlight module 11 may have a polarizer, and a polarizer may be provided on the side of the color filter substrate away from the backlight module 11. The deflection state of the liquid crystal can be adjusted by the pixel electrode and the common electrode. In conjunction with the selection of the polarization direction of the light by the polarizer, the light emitted from the first surface 101 can be adjusted, thereby realizing image display.

[0072] In addition, the display panel 1 may further include a transparent cover plate, which may cover the side of the color film substrate away from the backlight module 11 for protection, and the material of the transparent cover plate may be transparent materials such as glass and acrylic. The first surface 101 of the display panel 1 may be the surface of the transparent cover plate away from the backlight module 11. Of course, the display panel 1 may also include other structures, which will not be described in detail here.

[0073] In some other embodiments of the present disclosure, the display panel 1 is an organic light emitting diode display panel, which may include a display substrate, and the display substrate may include a driving backplane and a plurality of light emitting devices distributed in an array and arranged on one side of the driving backplane. The light emitting devices are organic light emitting diodes, and each light emitting device can be driven by the driving backplane to emit light independently to realize image display. At the same time, the display panel 1 may also include an encapsulation layer and a transparent cover plate, and the encapsulation layer covers each light emitting device to prevent the erosion of the light emitting device by water and oxygen. The transparent cover plate is arranged on the side of the encapsulation layer away from the driving backplane, and its material may be a transparent material such as glass. The first surface 101 of the display panel 1 may be the surface of the transparent cover plate away from the backlight module 11.

[0074] Further, such as Figure 1 As shown, in some embodiments of the present disclosure, the display panel 1 may further include a transparent protective cover plate 14, which may be disposed on one side of the display substrate 12 and may be bonded to the display substrate 12 via an adhesive layer 13. The adhesive layer 13 may be a frame sealing adhesive, which may be in an annular structure, and the adhesive layer 13 may be located in the peripheral area.

[0075] For example, for a liquid crystal display panel, it can be disposed on a side of the transparent cover away from the backlight module 11. In this case, the first surface 101 is the surface of the protective cover 14 away from the backlight module 11. For an organic light emitting diode display panel, the protective cover 14 can be disposed on a side of the transparent cover away from the driving backplane. In this case, the first surface 101 is the surface of the protective cover 14 away from the driving backplane.

[0076] The frame 2 may surround the display panel 1, and the frame 2 may be surrounded by a plurality of frame bars 21, each frame bar 21 corresponding to a side of the display panel 1. Each frame bar 21 of the frame 2 includes at least a first frame bar and a second frame bar that are arranged opposite to each other. For example, the frame 2 is a rectangular structure, and may have two first frame bars and two second frame bars, a first frame bar and a second frame bar extending in the length direction and distributed in the width direction, and another first frame bar and another second frame bar extending in the width direction and distributed in the length direction. In other words, the lengths of different first frame bars may be different, and the lengths of different second frame bars may also be different. At the same time, the display panel 1 may be a rectangle, and the four frame bars 21 may correspond to a side of the display panel 1 respectively. Of course, the frame bar 21 may also be other polygonal structures, depending on the shape of the display panel 1.

[0077] like Figure 1-Figure 5 As shown, for any frame strip 21, it may include a main body 211, a first limiting portion 212 and a second limiting portion 213, wherein:

[0078] The main body 211 may be a linearly extending strip structure, which is the main body 211 part of the frame strip 21, and its length is the length of the frame strip 21, and is not less than the length of the side of the display panel 1 corresponding to the frame strip 21. The thickness of the main body 211, that is, the distance of the boundary of the main body 211 in the direction perpendicular to the first surface 101, may be greater than the thickness of the display panel 1.

[0079] The first limiting portion 212 and the second limiting portion 213 may be connected to the surface of the main body 211 close to the display panel 1, and both are strip-shaped structures extending along the extension direction of the main body 211. The first limiting portion 212 is located on the side of the first surface 101 away from the second surface 102, and extends to the peripheral area, that is, the orthographic projection of the first limiting portion 212 on the plane where the first surface 101 is located extends to partially overlap with the first surface 101, and the overlapping area is located in the peripheral area. In other words, the first limiting portion 212 can block a partial area of ​​the edge of the first surface 101.

[0080] The second limiting portion 213 is located on a side of the first limiting portion 212 close to the second surface 102, and forms a limiting groove 100 with the first limiting portion 212. Meanwhile, the second limiting portion 213 may be located between the first surface 101 and the second surface 102, and there may be a gap between the second limiting portion 213 and the side of the display panel 1.

[0081] The first limit portion 212 and the second limit portion 213 can be integrally formed with the main body 211, so that they can be formed in one step. Of course, the first limit portion 212 and the second limit portion 213 can also be independently formed with the main body 211 and fixedly connected. In addition, in some embodiments of the present disclosure, at least one cavity can be provided in the main body 211 and the second limit portion 213 to reduce the weight of the frame bar 21.

[0082] The infrared sensing device 3 may be disposed in the limiting groove 100 of the frame bar 21, and may include a driving board 31 and an infrared sensing unit 32, wherein the driving board 31 may be provided with a control circuit, and the infrared sensing unit 32 is disposed on the driving board 31, and may emit infrared rays or receive infrared rays under the control of the control circuit of the driving board 31. In order to ensure that the infrared sensing unit 32 can smoothly emit or receive infrared rays, at least part of it is located between the first surface 101 and the first limiting portion 212, that is, the infrared sensing unit 32 is at least partly higher than the first surface 101, so that infrared rays can be emitted on the side of the first surface 101 away from the second surface 102. At the same time, the infrared sensing unit 32 does not exceed the end of the first limiting portion 212 away from the main body 211.

[0083] In this article, the infrared sensing unit 32 that emits infrared rays is defined as an infrared emitting unit, and the infrared sensing unit 32 that receives infrared rays is defined as an infrared receiving unit. Accordingly, the infrared sensing device 3 with an infrared emitting unit is an infrared emitting device, and the infrared sensing device 3 with an infrared receiving unit is an infrared receiving device.

[0084] The infrared emitting device and the infrared receiving device are respectively arranged in the limiting grooves 100 of the two opposite frame strips 21. For example, the driving board 31 can be arranged in the limiting groove 100 and detachably connected with the first limiting portion 212 and the second limiting portion 213. The infrared sensing unit 32 is arranged in a partial area of ​​the surface of the driving board 31 close to the display panel 1. In some embodiments of the present disclosure, the first limiting portion 212 is provided with a first groove 2122 corresponding to the position of the driving board 31, and the second limiting portion 213 is provided with a second groove 2132 corresponding to the position of the driving board 31. The driving board 31 is inserted into the first groove 2122 and the second groove 2132. At the same time, the first groove 2122 and the second groove 2132 can be connected along the length direction of the frame strip 21, so that the driving board 31 can be slid in or out of the end of the frame strip 21. Of course, other methods can also be used to install the driving board 31 in the limiting groove 100.

[0085] The infrared emitting units and the infrared receiving units are arranged in a one-to-one correspondence. An infrared emitting unit can emit infrared rays to a corresponding infrared receiving unit, and an infrared receiving unit can receive infrared rays emitted by a corresponding infrared emitting unit. An infrared sensing network S can be formed by each infrared emitting unit and infrared receiving unit. The infrared sensing network S is the plane where the infrared rays emitted by the infrared emitting units and the infrared receiving units are located. When a finger or other opaque obstacle blocks any position of the infrared sensing network S, the touch position can be determined by determining the position of the infrared receiving unit that has not received the infrared rays.

[0086] An infrared emitting device may be provided in the limiting groove 100 of the first frame bar, and an infrared receiving device may be provided in the limiting groove 100 of the second frame bar; or, an infrared emitting device may be provided in the limiting groove 100 of the first frame bar, and an infrared receiving device may be provided in the limiting groove 100 of the second frame bar.

[0087] In some embodiments of the present disclosure, the frame 2 is a rectangular structure and has two first frame bars and two second frame bars. An infrared emitting device can be set in the limiting grooves 100 of the two first frame bars, and an infrared receiving device can be set in the limiting grooves 100 of the two second frame bars, thereby forming an infrared sensing network S that can sense touch operations in the length direction and the width direction. By determining the position of the infrared receiving unit that has not received infrared rays, the position of the touch area in the length direction and the width direction can be determined.

[0088] like Figure 1 , Figure 3 and Figure 4 As shown, in order to avoid the influence of stray light on the touch accuracy, the infrared filter strip 4 can filter out the light other than the infrared light emitted or received by the infrared sensing device 3. For example, the infrared filter strip 4 can at least shield the visible light and can transmit the infrared light. The infrared filter strip 4 can be limited within the range between the first limit portion 212 and the second limit portion 213 of at least one frame strip 21, and the infrared filter strip 4 is located on the side of the infrared sensing device 3 close to the display panel 1 for filtering.

[0089] A partial area of ​​the infrared filter strip 4 can be limited between the first limiting portion 212 and the first surface 101, and is in direct contact with the first surface 101, so that the infrared filter strip 4 can be limited by means of the first surface 101, and there is no need to set a limiting structure connected to the main body 211 on the first surface 101 to cooperate with the first limiting portion 212 to limit the position of the infrared filter strip 4, so that there is no need to increase the distance between the infrared sensing unit 32 and the first surface 101 in order to avoid the limiting structure blocking the infrared rays, which is beneficial to reducing the distance A between the infrared sensing network S and the first surface 101, realizing low-altitude touch, avoiding sensing the touch operation when the distance to the first surface 101 is far away, and avoiding accidental touch.

[0090] In addition, the orthographic projection of the infrared filter strip 4 on the display substrate 12 is located in the peripheral area, which can avoid blocking the display area.

[0091] The specific installation method of the infrared filter strip 4 is described in detail below:

[0092] like Figure 1-Figure 5 As shown, in some embodiments of the present disclosure, a first slot 2121 may be provided on a surface of the first limiting portion 212 close to the first surface 101, and the infrared filter strip 4 may be plugged into the first slot 2121. For example, the infrared filter strip 4 includes a body 41 and a first plug-in portion 411, wherein:

[0093] The main body 41 may be a strip-shaped structure extending along the length direction of the frame strip 21, which can at least be used to shield visible light and transmit infrared rays. The main body 41 may be limited between the first limiting portion 212 and the first surface 101, and the main body 41 may be a rectangular parallelepiped structure, and is arranged perpendicular to the first surface 101, and is within the range blocked by the first limiting portion 212. The first plug-in portion 411 may be arranged on the surface of the main body 41 close to the first limiting portion 212, and its shape matches the first slot 2121, and is plugged into the first slot 2121. The first plug-in portion 411 and the main body 41 may adopt an integral structure so as to be formed at the same time. Of course, they can also be manufactured separately and then fixedly connected.

[0094] Further, such as Figure 2 and Figure 5As shown, in order to facilitate the first plug-in portion 411 to enter the first slot 2121, the side wall of the first slot 2121 can be contracted in the direction away from the first surface 101, that is, the cross section of the first slot 2121 is a trapezoidal structure, that is, the boundary of the opening end of the first slot 2121 is larger than the boundary of the bottom surface. The shape of the first plug-in portion 411 matches the shape of the slot.

[0095] In some embodiments of the present disclosure, Figure 1 As shown, the display panel 1 has the aforementioned protective cover plate 14, and a second slot 2131 may be provided on the protective cover plate 14, and the orthographic projection of the second slot 2131 on the display substrate 12 is located in the peripheral area, thereby avoiding grooving the display area. The second slot 2131 may be a through hole structure that penetrates the protective cover plate 14, and of course, it may not penetrate the protective cover plate 14.

[0096] The infrared filter strip 4 further includes a second plug-in portion 421 , which may be disposed on a surface of the body 41 close to the first surface 101 , and the second plug-in portion 421 is plugged into the second slot 2131 .

[0097] Further, such as Figure 1 As shown, the surface of the body 41 close to the first surface 101 is only partially provided with the second plug-in portion 421. For buffering, a buffer layer 7 may be provided between the area where the second plug-in portion 421 is not provided and the first surface 101. For example, the surface of the body 41 close to the first surface 101 may include a first area and a second area, the second plug-in portion 421 is provided in the first area, and the infrared filter strip 4 may further include a buffer layer 7, which may be provided in the second area and clamped between the second area and the first surface 101, for vibration to cause damage to the display panel 1 and the infrared filter strip 4. The material of the buffer layer 7 may be an elastic material such as foam glue.

[0098] In other embodiments of the present disclosure, Figure 3 As shown, in addition to the above-mentioned body 41, the infrared filter strip 4 also includes a mounting portion 42 and a connecting portion 43, wherein the mounting portion 42 can be attached to and connected with the area of ​​the driving board 31 where the infrared sensing unit 32 is not provided, for example, the mounting portion 42 and the driving board 31 can be connected by screws penetrating the mounting portion 42 and the driving board 31. The connecting portion 43 can connect the body 41 and the mounting portion 42. Thus, while the position of the body 41 is limited by the first surface 101 and the first limiting portion 212, the position of the infrared filter strip 4 can be further limited by connecting the mounting portion 42 and the driving board 31, so that the infrared filter strip 4 is fixed in the limiting groove 100.

[0099] In some further embodiments of the present disclosure, Figure 4As shown, a second slot 2131 can be opened on the surface of the second limiting portion 213 close to the infrared filter strip 4, and a second plug-in portion 421 can be set on the above-mentioned mounting portion 42, and the two second plug-in portions 421 are plugged into the second slot 2131, so that the infrared filter strip 4 is fixed in the limiting groove 100 through the cooperation between the first plug-in portion 411 and the first slot 2121, the cooperation between the first limiting portion 212 and the first surface 101, and the cooperation between the second plug-in portion 421 and the second slot 2131.

[0100] In addition, at least a portion of the connecting portion 43 may be located on a side of the first surface 101 close to the second surface 102 and abut against the display panel 1. For example, the connecting portion 43 may abut against the outer peripheral surface of the protective cover plate 14, so that the display panel 1 can be further limited by the connecting portion 43.

[0101] In some embodiments of the present disclosure, Figure 3 and Figure 4 As shown, the touch display device further includes a back plate 5, the frame 2 and the backlight module 11 can be arranged on the back plate 5, and the back plate 5 can be detachably connected to at least part of the frame strips 21 of the frame 2. For example, a boss 51 can be provided on the surface of the back plate 5 close to the frame 2, and a clamping hole 22 can be provided at a position corresponding to the boss 51 of at least part of the frame strips 21 of the frame 2, and the boss 51 can be clamped in the clamping hole 22, so that the frame 2 is fixed to the back plate 5 to prevent the relative position of the two from moving. In order to improve the fixing effect, the above-mentioned boss 51 can be provided on each frame strip 21, and is clamped with each clamping hole 22 in a one-to-one correspondence.

[0102] In order to limit the position of the display panel 1 in the frame 2, in some embodiments of the present disclosure, for the display panel 1 having the backlight module 11, an inner frame 6 may be provided on a side of the back plate 5 close to the backlight module 11, and the inner frame 6 may be a frame-shaped structure surrounding the outside of the display panel 1, and the display panel 1 may be limited in the inner frame 6. The inner frame 6 is located within the range of the orthographic projection of the first limiting portion 212 on the back plate 5.

[0103] Further, such as Figure 3 and Figure 4 As shown, the inner wall of the inner frame 6 may be provided with a supporting ridge 61, which may extend along the circumference of the inner frame 6 and be located between the back plate 5 and the surface of the inner frame 6 away from the back plate 5, so that a partial area of ​​the inner frame 6 is located on the side of the supporting ridge 61 away from the back plate 5, that is, a partial area of ​​the inner frame 6 extends out of the supporting ridge 61 in a direction perpendicular to the back plate 5. The backlight module 11 may be provided between the supporting ridge 61 and the back plate 5 to limit the position of the backlight module 11, and the display substrate 12 may be provided on the supporting ridge 61 to play a supporting role through the supporting ridge 61. At the same time, the position of the display substrate 12 may be limited by the area of ​​the inner frame 6 extending out of the supporting ridge 61.

[0104] In addition, if Figure 3 As shown, in order to reduce the influence of water vapor entering the frame 2 on the display panel 1, a water vapor channel can be formed in the frame 2. For example, there are gaps between the surface of the inner frame 6 away from the back plate 5 and the connecting portion 43 of the infrared filter strip 4, between the outer wall of the inner frame 6 and the mounting portion 42, and between the second limiting portion 213 and the inner frame 6, and these gaps are connected, so that the water vapor entering between the body 41 and the first surface 101 can be discharged from the gap through the joint surface between the frame strip 21 and the back plate 5. The specific path is as follows: Figure 3 As shown. Thus, the water vapor entering between the backlight module 11 and the display substrate 12 can be reduced. Further, in order to increase the effect of discharging water vapor, the surface of the inner frame 6 away from the back plate 5 can be made into an inclined surface, and the distance between the inner frame 6 and the back plate 5 gradually decreases in the direction toward the outside of the display panel 1, which is conducive to increasing the gap between the surface of the inner frame 6 away from the back plate 5 and the connecting portion 43 of the infrared filter strip 4.

[0105] In other embodiments of the present disclosure, the inner frame 6 may be used to define an organic light emitting diode display panel or a liquid crystal display panel of other structures, which is not particularly limited herein.

[0106] The present disclosure also provides a terminal device, which may include a touch display device of any of the above-mentioned embodiments. The structure and beneficial effects of the touch display device can refer to the above embodiments and will not be repeated here. The terminal device can be an electronic whiteboard, a television, or other device with image display and touch functions, which will not be listed here.

[0107] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A touch display device, characterized in that: include: A display panel having a first surface and a second surface opposite to each other, and the display panel includes a display area and a peripheral area outside the display area; The area of ​​the first surface located in the display area is used for emitting light; A frame, formed by a plurality of frame strips surrounding the display panel; the frame strip comprises a main body, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are connected to a surface of the main body close to the display panel; the first limiting portion is located on a side of the first surface away from the second surface, and extends into the peripheral area; the second limiting portion is located on a side of the first limiting portion close to the second surface, and a limiting groove is formed between the first limiting portion and the second limiting portion; the frame strip comprises a first frame strip and a second frame strip arranged opposite to each other; the first limiting portion is provided with a first slot; an infrared sensing device, arranged in the limiting groove of the frame bar, and comprising an infrared sensing unit and a driving board, wherein the infrared sensing unit is at least partially located between the first surface and the first limiting portion; one of the infrared sensing unit in the limiting groove of the first frame bar and the infrared sensing unit in the limiting groove of the second frame bar is used to emit infrared rays, and the other is used to receive infrared rays; the driving board is arranged in the limiting groove and is detachably connected to the first limiting portion and the second limiting portion; the infrared sensing unit is arranged in a partial area of ​​the surface of the driving board away from the display panel; An infrared filter strip, wherein at least a partial area of ​​the infrared filter strip is defined between the first limiting portion of at least one of the frame strips and the first surface, the infrared filter strip is located on a side of the infrared sensing device close to the display panel, and the infrared filter strip is in direct contact with the first surface; The infrared filter strip comprises: A body, defined between the first limiting portion and the first surface; A first plug-in portion, provided on a surface of the body close to the first limiting portion, the first plug-in portion being plugged into the first slot; A mounting portion, wherein the mounting portion is attached to the driving board and connected via screws penetrating the mounting portion and the driving board; or, the mounting portion is provided with a second plug-in portion, and the second plug-in portion is plugged into a second slot provided in the second limiting portion; A connecting portion connects the main body and the mounting portion, wherein at least a portion of the connecting portion is located on a side of the first surface close to the second surface and abuts against the display panel.

2. The touch display device according to claim 1, characterized in that: The side wall of the first slot shrinks in a direction away from the first surface, and the shape of the first plug-in portion matches the shape of the slot.

3. The touch display device according to claim 1, characterized in that: The display panel comprises: Display substrate; A protection cover plate is arranged on one side of the display substrate; a surface of the protection cover plate away from the display substrate is the first surface, and a surface of the display substrate away from the protection cover plate is the second surface.

4. The touch display device according to claim 3, characterized in that: The orthographic projection of the infrared filter strip on the display panel is located within the peripheral area.

5. The touch display device according to claim 3, characterized in that: The surface of the body close to the first surface includes a first area and a second area; the second plug-in portion is arranged in the first area; the infrared filter strip further includes: The buffer layer is disposed in the second region and directly contacts the first surface.

6. The touch display device according to claim 5, characterized in that: The material of the buffer layer includes foam glue.

7. The touch display device according to claim 1, characterized in that: At least a portion of the connecting portion is located on a side of the first surface close to the second surface and abuts against the display panel.

8. The touch display device according to claim 1, characterized in that: The display panel comprises a backlight module and a display substrate, wherein the display substrate comprises an array substrate and a liquid crystal layer and a color filter layer located on a side of the array substrate away from the backlight module; The touch display device further includes: A back plate, the frame and the backlight module are arranged on the back plate, an inner frame is arranged on one side of the back plate close to the backlight module, and the display panel is confined within the inner frame.

9. The touch display device according to claim 8, characterized in that: The inner wall of the inner frame is provided with a supporting ridge, the backlight module is arranged between the supporting ridge and the back plate, and the display substrate is arranged on the supporting ridge.

10. The touch display device according to claim 8, characterized in that: The back plate is provided with a boss located outside the inner frame, the frame is provided with a clamping hole, and the boss is clamped in the clamping hole.

11. A terminal device, characterized in that: The invention comprises the touch display device according to any one of claims 1 to 10.

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