Display device

Abstract

The display device belongs to the technical field of display. The display device comprises a transparent cover plate, a display panel, a frame assembly and an infrared touch assembly. The frame assembly comprises an outer frame and a light filtering strip. The light filtering strip has a light filtering part for covering the front side edge of the transparent cover plate. The outer frame has an outer frame body, a front frame wall and a rear frame wall. The outer side end of the front frame wall is connected with the outer frame body and the inner side end covers the front surface of the light filtering part. The outer side end of the rear frame wall is connected with the outer frame body. The infrared touch assembly is fixed between the front frame wall and the rear frame wall and is provided with an infrared emitter or an infrared receiver. The display panel is fixed behind the transparent cover plate. The display device can reduce the touch height.

Description

[0001] Cross-referencing

[0002] This disclosure claims priority to Chinese Patent Application No. 202111304644.6, filed on November 5, 2021, entitled “Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display technology, and more specifically, to a display device. Background Technology

[0004] Infrared touch whiteboards determine the writing position by capturing the signal on / off state of infrared LEDs. The height of the LEDs needs to be higher than the tempered glass surface to ensure effective signal transmission and reception. However, current touchscreens are too high, resulting in a poor writing experience.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a display device that reduces the touch height.

[0007] According to one aspect of this disclosure, a display device is provided, including a transparent cover, a display panel, a bezel assembly, and an infrared touch assembly;

[0008] The border assembly includes an outer frame and a filter strip;

[0009] The filter strip has a filter portion that presses against the front edge of the transparent cover plate;

[0010] The outer frame has an outer frame body, a front frame wall, and a rear frame wall; the outer end of the front frame wall is connected to the outer frame body, and the inner end presses against the front surface of the filter part;

[0011] The outer end of the rear frame wall is connected to the outer frame body;

[0012] An infrared touch component is fixed between the front frame wall and the rear frame wall, and it is equipped with an infrared transmitter or an infrared receiver.

[0013] The display panel is fixed behind the transparent cover.

[0014] In one embodiment of this disclosure, the filter strip further has a buffer portion located on the side of the transparent cover plate;

[0015] The rear frame wall has an abutting portion that abuts against the outer side of the buffer portion.

[0016] In one embodiment of this disclosure, the buffer section includes a support section and a guide section, wherein the width of the support section is not less than half the thickness of the transparent cover plate;

[0017] The guide section is connected to the rear end of the bearing section and is inclined outward.

[0018] In one embodiment of this disclosure, the entire outer surface of the bearing section is in contact with the abutting portion.

[0019] In one embodiment of this disclosure, the included angle between the guide section and the side of the transparent cover plate is between 5° and 30°.

[0020] In one embodiment of this disclosure, the front edge of the transparent cover is chamfered;

[0021] The buffer section further includes a transition section, which is parallel to the chamfer of the front edge of the transparent cover plate;

[0022] The front end of the adapter section is connected to the filter section, and the rear end of the adapter section is connected to the front end of the carrier section.

[0023] In one embodiment of this disclosure, the thickness of the buffer portion is not less than 1 mm.

[0024] In one embodiment of this disclosure, the dimension of the buffer portion in the front-to-back direction is 0.9 to 1.3 times the thickness of the transparent cover plate.

[0025] In one embodiment of this disclosure, the front frame wall is provided with a fastening protrusion protruding to the rear, and the thickness of the rear end of the fastening protrusion is greater than the thickness of the front end of the fastening protrusion.

[0026] The front side of the filter section is provided with a fastening groove that mates with the fastening protrusion; the fastening protrusion is inserted into the fastening groove.

[0027] In one embodiment of this disclosure, the front frame wall is provided with a fastening protrusion protruding to the rear; the front side of the filter portion is provided with a fastening groove that mates with the fastening protrusion; the fastening protrusion is inserted into the fastening groove.

[0028] The filter strip also includes a limiting protrusion protruding outward; the contact portion abuts against the rear side of the limiting protrusion.

[0029] In one embodiment of this disclosure, the rear frame wall further includes a rear frame wall body and a connecting wall; the outer end of the rear frame wall body is connected to the outer frame body; the connecting wall is connected to the rear frame wall body and extends to connect with the abutting portion.

[0030] In one embodiment of this disclosure, the rear frame wall body is located on the rear side of the transparent cover plate.

[0031] In one embodiment of this disclosure, the connecting wall includes a first connecting wall and a second connecting wall; the rear end of the first connecting wall is connected to the front side of the rear frame wall body, the front end of the first connecting wall is connected to the outer end of the second connecting wall, and the inner end of the second connecting wall is connected to the abutting part.

[0032] In one embodiment of this disclosure, an avoidance groove is formed between the first connecting wall, the second connecting wall, and the rear frame wall body;

[0033] The buffer section includes a support section and a guide section; the guide section is connected to the rear end of the support section and extends in the direction of the clearance groove.

[0034] In one embodiment of this disclosure, the frame assembly further includes a support member connected to the outer frame and bonded to the rear edge of the transparent cover plate by an elastic material.

[0035] In one embodiment of this disclosure, the support member includes a first supporting vertical wall, a supporting horizontal wall, and a second supporting vertical wall;

[0036] The first supporting vertical wall is connected to the front end of the supporting horizontal wall and extends inward; the first supporting vertical wall is bonded to the rear edge of the transparent cover plate by an elastic material; the second supporting vertical wall is connected to the rear end of the supporting horizontal wall and extends outward; the second supporting vertical wall is connected to the outer frame.

[0037] In one embodiment of this disclosure, the elastic material is double-sided adhesive.

[0038] The width of the adhesive surface between the double-sided adhesive and the transparent cover plate is 1.1 to 2.0 times the width of the contact surface between the filter part and the transparent cover plate.

[0039] In one embodiment of this disclosure, the elastic material is foam tape; wherein the compression rate of the foam tape is 40% to 60%.

[0040] In one embodiment of this disclosure, a sealing groove is provided on the rear side of the filter portion, and a sealing element is provided in the sealing groove; the sealing element and the transparent cover plate are interference-fitted.

[0041] In one embodiment of this disclosure, the width of the sealing groove is not less than 0.5 times the width of the contact surface between the filter portion and the transparent cover plate.

[0042] In one embodiment of this disclosure, the depth of the sealing groove is not less than 0.2 mm.

[0043] In one embodiment of this disclosure, the sealing groove is located away from the outer frame body.

[0044] In one embodiment of this disclosure, the compression of the seal is between 40% and 60%.

[0045] In one embodiment of this disclosure, the coefficient of friction between the seal and the transparent cover is between 1.0 and 3.5.

[0046] In one embodiment of this disclosure, the surface roughness of the seal near the transparent cover is in the range of 4 to 12 micrometers.

[0047] In one embodiment of this disclosure, the seal is hydrophobic.

[0048] In one embodiment of this disclosure, the sealing element is a silicone strip.

[0049] In one embodiment of this disclosure, a sealing groove is provided on the rear surface of the filter part, and the sealing groove is filled with sealant; the transparent cover plate and the filter part are sealed together by the sealant.

[0050] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0051] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0052] Figure 1 This is a schematic diagram of the structure of a display device in one embodiment of the present disclosure.

[0053] Figure 2 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0054] Figure 3 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0055] Figure 4 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0056] Figure 5 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0057] Figure 6 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0058] Figure 7 This is a partial structural schematic diagram of a display device in one embodiment of the present disclosure.

[0059] Explanation of reference numerals in the attached figures:

[0060] BP, Transparent cover plate; PNL, Display panel; AA, Infrared touch assembly; A1, Infrared transmitter; A2, Infrared receiver; A3, Circuit board; AG, Wiring cavity; CC, Frame assembly; DD, Outer frame; D1, Outer frame body; D2, Front frame wall; D21, Fastening protrusion; D22, First boss; D2G, First groove; D3, Rear frame wall; D31, Rear frame wall body; D32, Connecting wall; D321, First connecting wall; D322, First... Two connecting walls; D33, contact part; D34, second boss; D3G, second groove; EE, support member; E1, first support vertical wall; E2, second support vertical wall; E3, support horizontal wall; FF, filter strip; F1, filter part; F1G, fastening groove; F2, buffer part; F21, transition section; F22, bearing section; F23, guide section; F3, limiting protrusion; BB, back shell; HF, front side; HB, rear side; HI, inner side; HO, outer side. Detailed Implementation

[0061] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0062] The terms “a,” “one,” “the,” “the,” 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 indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0063] This disclosure provides a display device capable of infrared touch control, which can be an electronic whiteboard, a conference tablet, an interactive display board, or other feasible display device. See also Figure 1 The display device includes a transparent cover plate BP, a display panel PNL, a bezel assembly CC, and an infrared touch component AA. The transparent cover plate BP is positioned in front of the display panel PNL to protect it; the bezel assembly CC is positioned around the perimeter of the display device to provide a bezel; and the infrared touch component AA is located within the bezel assembly CC and forms a touch surface in front of the transparent cover plate BP.

[0064] See Figure 1 In this disclosure, unless otherwise specified, the side of the display device used to display the image is defined as the front side HF, and the side opposite to the front side is defined as the rear side HB. Exemplarily, the transparent cover plate BP is located in front of the display panel PNL; the display panel PNL emits light forward to display the image.

[0065] In this disclosure, unless otherwise specified, the direction away from the center of the display plane is defined as the outer side HO, and the direction closer to the center of the display plane is defined as the inner side HI. Exemplarily, the bezel assembly CC is located outside the transparent cover plate BP.

[0066] See Figure 2 and Figure 3 In the display device disclosed herein, the bezel assembly CC includes an outer frame DD and a filter strip FF.

[0067] The filter strip FF has a filter portion F1 that covers the front edge of the transparent cover plate BP.

[0068] The outer frame DD has an outermost main body D1, a front frame wall D2, and a rear frame wall D3. The outer end of the front frame wall D2 is connected to the main body D1, and its inner end presses against the front surface of the filter part F1. The outer end of the rear frame wall D3 is connected to the main body D1. An infrared touch component AA is fixed between the front frame wall D2 and the rear frame wall D3, and it is provided with an infrared emitter A1 or an infrared receiver A2 facing the filter part F1. The display panel PNL is fixed behind the transparent cover plate BP.

[0069] In the display device disclosed herein, the light filter strip FF and the transparent cover plate BP are directly connected in contact, without any adhesive layer (such as double-sided foam tape) or other film layers for fastening between them. This allows the light filter F1 to be closer to the front surface of the transparent cover plate BP. Infrared light emitted by the infrared emitter A1 can pass through the light filter F1 to enter the infrared receiver A2 in the opposite frame assembly. By detecting the obstruction of infrared light by an external object PN (such as a finger or stylus), the object can be located, thereby enabling touch operation. Because the light filter F1 is closer to the front surface of the transparent cover plate BP, the infrared light used for touch is also closer to the front surface of the transparent cover plate BP, which reduces the touch height HH of infrared touch, thereby improving the touch experience. In this disclosure, to fix the light filter strip FF, the front frame wall D2 of the frame assembly CC can be pressed against the front side of the light filter part F1, thereby clamping the light filter part F1 between the transparent cover plate BP and the front frame wall D2. This overcomes the problem of unstable setting of the light filter strip FF caused by the lack of adhesion between the light filter part F1 and the transparent cover plate BP. In related technologies, double-sided adhesive foam is required between the lower light filter part and the transparent cover plate for bonding to fix the light filter part. This significantly increases the distance between the infrared light and the transparent cover plate, resulting in a higher touch height and a poor writing experience. On the other hand, applying the double-sided adhesive foam requires relatively precise alignment, which makes the installation process more complicated and is not conducive to improving the assembly cycle.

[0070] In one embodiment of this disclosure, the filter strip FF further has a buffer portion F2 located on the outside of the transparent cover plate BP. The rear frame wall D3 further has an abutting portion D33 that abuts against the outside of the buffer portion F2.

[0071] A buffer portion F2 of a light filter strip FF is provided between the contact portion D33 of the frame assembly CC and the transparent cover plate BP, which prevents direct contact between the contact portion D33 of the frame assembly CC and the transparent cover plate BP. During touch operation, the transparent cover plate BP is easily vibrated by tapping; however, when the transparent cover plate BP vibrates, it will not directly contact, collide, or rub against the outer frame DD, thus avoiding contact between the outer frame DD and the transparent cover plate BP and the resulting noise. In related technologies, the outer frame and the edge of the transparent cover plate are in direct contact, and the outer frame is made of metal; during touch operation, the transparent cover plate rubs against the outer frame, producing obvious noise and reducing the user experience.

[0072] In some embodiments, the frame assembly CC further includes a support member EE, which is connected to the outer frame DD and bonded to the rear edge of the transparent cover plate BP by an elastic material. In this way, vibrations generated by the transparent cover plate BP during touch can be at least partially absorbed by the elastic material, reducing vibrations of the transparent cover plate BP and preventing friction between the transparent cover plate BP and the support member EE that could cause noise.

[0073] Therefore, the display device of this disclosure can not only reduce the touch height, but also reduce or eliminate abnormal noise during touch. It is understood that in this disclosure, touch includes the display device changing the screen in response to a touch action. For example, the display device can track the trajectory of an external object PN (e.g., a finger, stylus, etc.) via touch and display it, achieving the effect of writing on the display device.

[0074] The structure, principle, and effects of the display device disclosed herein will be further explained and illustrated below with reference to the accompanying drawings.

[0075] In this disclosure, the material of the light filter strip FF can be a plastic material, such as PC (polycarbonate). The infrared touch component AA can include an infrared emitting unit and an infrared receiving unit, which are respectively disposed in two opposing outer frames DD. The infrared emitting unit can include a circuit board A3 and an infrared emitter A1 (e.g., an infrared LED) fixed to the circuit board A3. The infrared receiving unit includes a circuit board A3 and an infrared receiver A2 (e.g., an infrared sensor) fixed to the circuit board A3. In the two opposing outer frames DD, one outer frame DD is equipped with the infrared emitting unit, and the other outer frame DD is equipped with the infrared receiving unit. The infrared light emitted by the infrared emitter A1, after being filtered by the light filter strip FF, can pass through the front of the transparent cover plate BP and through the light filter strip FF on the other side, and be detected by the infrared receiver A2. When the optical path between the infrared transmitter A1 and the infrared receiver A2 is blocked, for example by a stylus or finger, the infrared receiver A2 cannot sense the infrared light. The controller of the display device can then determine the position of the obstruction on the transparent cover BP and locate the obstruction.

[0076] In some embodiments of this disclosure, see Figure 2 and Figure 3 The inner and outer surfaces of the filter section F1 can be parallel to ensure that the portion of the filter section F1 used for filtering infrared light has the same thickness (dimension along the inside and outside direction).

[0077] In some embodiments of this disclosure, the buffer portion F2 includes a support segment F22, the width of which (dimension along the front-back direction) is not less than half the thickness (dimension along the front-back direction) of the transparent cover plate BP. The contact portion D33 at least partially abuts against the outer surface of the support segment F22. Thus, when the display device is placed vertically, such as wall-mounted or erected as an electronic whiteboard using a bracket, the lower support segment F22 can support the transparent cover plate BP, ensuring a large bearing area between the support segment F22 and the transparent cover plate BP, preventing the transparent cover plate BP from slipping due to a small bearing width (dimension along the front-back direction of the contact surface). In one example, the width of the support segment F22 is not less than 3 / 4 of the thickness of the transparent cover plate BP.

[0078] In one embodiment of this disclosure, the inner side of the bearing section F22 is parallel to the outer side of the transparent cover plate BP.

[0079] In one embodiment of this disclosure, the entire outer surface of the bearing section F22 is in contact with the contact portion D33.

[0080] In some embodiments of this disclosure, see Figure 2 and Figure 3 The buffer section F2 may further include a guide section F23; the guide section F23 is connected to the rear end of the supporting section F22 and is inclined outward. In other words, along the rearward direction HB, the guide section F23 of the oppositely arranged filter strip FF is generally flared. In this way, when assembling the transparent cover plate BP, the guide section F23 can guide the transparent cover plate BP to slide to cooperate with the filter section F1, thereby reducing the assembly difficulty.

[0081] In one embodiment of this disclosure, the angle between the guide segment F23 and the side of the transparent cover plate BP is between 5° and 30°. This ensures that the guide segment F23 has a strong guiding effect.

[0082] In one embodiment of this disclosure, the outer surface of the guide segment F23 is at least partially in contact with the abutment portion D33. Thus, the abutment portion D33 provides support for the guide segment F23, allowing it to maintain its shape to guide the transparent cover plate BP. Of course, in other embodiments of this disclosure, the outer surface of the guide segment F23 may not be in contact with the abutment portion D33 at all; only during the assembly of the transparent cover plate BP will the guide segment F23 bend under the pressure of the transparent cover plate BP to contact the abutment portion D33.

[0083] In one embodiment of this disclosure, the inner side of the contact portion D33 is provided with a chamfer that matches the outer side of the guide segment F23, so as to effectively support the guide segment F23.

[0084] In some embodiments of this disclosure, the front edge of the transparent cover plate BP is chamfered; the buffer section F2 further includes a transition section F21, which is parallel to the chamfer at the front edge of the transparent cover plate BP; the front end of the transition section F21 is connected to the filter section F1, and the rear end of the transition section F21 is connected to the front end of the support section F22. This improves the matching degree between the buffer section F2 and the transparent cover plate BP, achieving a better buffering effect.

[0085] In some embodiments of this disclosure, the thickness of the buffer portion F2 is not less than 1 mm. Thus, the filter strip FF can be fabricated using an extrusion process as a whole, avoiding increased extrusion costs due to an excessively small thickness of the buffer portion F2.

[0086] In some embodiments of this disclosure, the dimension of the buffer portion F2 in the front-to-back direction is 0.9 to 1.3 times the thickness of the transparent cover plate BP, for example, it can be 1.1 to 1.2 times the thickness of the transparent cover plate BP. In this way, the load-bearing strength of the buffer portion F2 on the transparent cover plate BP can be guaranteed, while avoiding the increase in extrusion cost due to the excessive length of the buffer portion F2 in the front-to-back direction.

[0087] See Figure 2 and Figure 3 The outer frame DD has an outer frame body D1, a front frame wall D2, and a rear frame wall D3. The outer frame body D1 is located on the outermost side of the outer frame DD, and the front frame wall D2 and the rear frame wall D3 are both located on the inner side of the outer frame body D1 and connected to the outer frame body D1.

[0088] In some embodiments of this disclosure, the outer surface of the outer frame body D1 can be substantially parallel to the normal of the display device. Of course, in other embodiments, the outer surface of the outer frame body D1 can form a certain angle with the normal direction of the display device, for example, an angle of 0 to 10°, so that the outer surface of the outer frame body D1 has a certain tilt angle.

[0089] The outer end of the front frame wall D2 can be connected to the outer frame body D1, and the inner end of the front frame wall D2 can contact and connect with the light filter part F1, so that the light filter part F1 presses against the front edge of the transparent cover plate BP. Optionally, one of the front frame wall and the light filter part is provided with a fastening protrusion and the other is provided with a fastening groove; the fastening protrusion and the fastening groove cooperate with each other to connect the front frame wall and the light filter part.

[0090] In some embodiments of this disclosure, the front frame wall D2 is provided with a rearwardly protruding fastening protrusion D21; the front side of the filter part F1 is provided with a fastening groove F1G that mates with the fastening protrusion D21; the fastening protrusion D21 is inserted into the fastening groove F1G. This improves the bonding strength between the front frame wall D2 and the filter strip FF, achieving better pressing and fixing of the filter strip FF. Furthermore, during assembly, the filter strip FF can be pre-fixed to the outer frame DD before the transparent cover plate BP is assembled.

[0091] In one embodiment of this disclosure, the rear end thickness (dimension along the inward and outward directions) of the fastening protrusion D21 is greater than the front end thickness (dimension along the inward and outward directions) of the fastening protrusion D21. The dimensions of the fastening groove F1G match the dimensions of the fastening protrusion D21, and its groove bottom height (dimension of the groove bottom of the fastening groove F1G in the inward and outward directions) is greater than its groove opening height (dimension of the groove opening of the fastening groove F1G in the inward and outward directions). Thus, when the fastening protrusion D21 is inserted into the fastening groove F1G, the fastening protrusion D21 cannot detach from the groove opening of the fastening groove F1G, thereby ensuring the reliability and strength of the connection between the filter strip FF and the outer frame DD. In one example, the cross-section of the fastening protrusion D21 perpendicular to its extension direction is trapezoidal (e.g., isosceles trapezoid, right trapezoid, etc.) with the base of the trapezoid on the rear side. In another example, the fastening protrusion D21 may also be T-shaped or T-shaped.

[0092] In another embodiment of this disclosure, the filter strip FF further includes an outwardly protruding limiting protrusion F3; the abutting portion D33 of the rear frame wall D3 abuts against the rear side of the limiting protrusion F3. Thus, the filter strip FF simultaneously engages with both the fastening protrusion D21 and the abutting portion D33, thereby ensuring the reliability and strength of the connection between the filter strip FF and the outer frame DD.

[0093] In some embodiments of this disclosure, the inner side of the fastening groove F1G (i.e. the inner side of the fastening protrusion D21) is parallel to the inner side of the filter part F1.

[0094] In some embodiments of this disclosure, the inner surface of the filter portion F1 is coplanar with the inner surface of the front frame wall D2. Exemplarily, the inner surface of the filter portion F1 has a certain slope angle, such that the two opposing filter portions F1 are arranged with forward-facing wide openings. Specifically, the inner surface of the filter portion F1 extends outward in the forward direction. Correspondingly, the inner surface of the front frame wall D2 also has the same slope angle, and the rear edge of the inner surface of the front frame wall D2 is flush with the front edge of the inner surface of the filter portion F1.

[0095] In another embodiment of this disclosure, the rear edge of the inner side surface of the front frame wall D2 is flush with the front edge of the inner side surface of the filter part F1.

[0096] In some embodiments of this disclosure, the rear frame wall D3 further includes a rear frame wall body D31 and a connecting wall D32; wherein, the outer end of the rear frame wall body D31 is connected to the outer frame body D1 and extends inward; the connecting wall D32 is connected to the rear frame wall body D31 and extends to connect with the contact portion D33. Thus, the contact portion D33 is connected to the outer frame body D1 through the connecting wall D32 and the rear frame wall body D31.

[0097] In one embodiment of this disclosure, the rear frame wall body D31 is disposed on the rear side of the transparent cover plate BP; the connecting wall D32 is connected to the front side of the rear frame wall body D31 and extends to connect with the contact portion D33.

[0098] In one example, the connecting wall D32 includes a first connecting wall D321 and a second connecting wall D322. The plane containing the first connecting wall D321 is arranged in the front-back direction; the plane containing the second connecting wall D322 is arranged in the inside-out direction. In other words, the first connecting wall D321 extends in the front-back direction along a cross-section perpendicular to its extension direction; the second connecting wall D322 extends in the inside-out direction along a cross-section perpendicular to its extension direction.

[0099] In a further embodiment, a clearance groove is formed between the first connecting wall, the second connecting wall, and the rear frame wall body. The guide segment extends towards the clearance groove. This avoids spatial interference between the connecting wall and the guide segment. Even if the guide segment is slightly longer due to manufacturing process errors, it can still extend into the clearance groove without being blocked by the connecting wall. Therefore, this reduces the manufacturing precision requirements of the connecting wall and the filter strip, improves their process window, and thus reduces the cost of the display device. Furthermore, when the guide segment guides the transparent cover plate for assembly, the clearance groove provides space for the deformation of the guide segment, thereby facilitating the assembly process of the transparent cover plate. It is understood that the guide segment extending towards the clearance groove does not mean that the guide segment extends into the clearance groove. The guide segment may be completely outside the clearance groove or partially within it.

[0100] The rear end of the first connecting wall D321 is connected to the front side of the rear frame wall body D31, the front end of the first connecting wall D321 is connected to the outer end of the second connecting wall D322, and the inner end of the second connecting wall D322 is connected to the contact part D33.

[0101] In some embodiments of this disclosure, a first groove D2G is provided on the rear side of the front frame wall D2; a second groove D3G is provided on the front side of the rear frame wall D3; the infrared touch component AA includes a circuit board A3 and an infrared transmitter A1 or an infrared receiver A2 disposed on the circuit board A3.

[0102] The circuit board A3 is inserted into the first groove D2G and the second groove D3G on both sides, respectively; the infrared emitter A1 or the infrared receiver A2 faces the filter F1 to emit infrared light from the filter F1 or receive infrared light transmitted through the filter F1. The first groove D2G and the second groove D3G are arranged facing each other in the front-to-back direction.

[0103] In one embodiment of this disclosure, a first boss D22 protruding rearward is provided on the rear side of the front frame wall D2, and a first groove D2G is formed on the first boss D22. In this way, the first groove D2G can be used to avoid local thinning of the front frame wall D2, thereby ensuring that the front frame wall D2 can still maintain high strength even with the first groove D2G provided.

[0104] In one embodiment of this disclosure, the second groove D3G is disposed on the front side of the rear frame wall body D31.

[0105] In one example, the front side of the rear frame body D31 is provided with a second boss D34 that protrudes forward, and a second groove D3G is formed on the second boss D34.

[0106] In one example, the second groove D3G is disposed on the outside of the first connecting wall D321.

[0107] In one example, the first connecting wall D321 is also connected to the second boss D34.

[0108] In one example, the inner front edge of the rear frame wall body D31 is chamfered to reduce the weight of the rear frame wall body D31 and save material. Furthermore, the outer end of the chamfer intersects with the inner edge of the rear end of the first connecting wall D321, so as to minimize material consumption and weight of the rear frame wall body D31 while ensuring the connection strength between the first connecting wall D321 and the rear frame wall body D31.

[0109] In some embodiments of this disclosure, a wiring cavity AG is formed between the circuit board A3 and the outer frame body D1. The signal port of the circuit board A3 is disposed in the wiring cavity AG. Thus, when different outer frames DD are spliced ​​together, the circuit boards A3 in each outer frame DD can be electrically connected through the signal port.

[0110] In some embodiments of this disclosure, the support member EE includes a first supporting vertical wall E1, a supporting horizontal wall E3, and a second supporting vertical wall E2; the plane containing the supporting horizontal wall E3 extends in the front-to-back direction, and the planes containing the first supporting vertical wall E1 and the second supporting vertical wall E2 extend in the inside-out direction. In other words, in a cross-section perpendicular to the extension direction of the support member EE, the cross-sections of the first supporting vertical wall E1 and the second supporting vertical wall E2 extend in the inside-out direction, and the cross-section of the supporting horizontal wall E3 extends in the front-to-back direction.

[0111] The first supporting vertical wall E1 is connected to the front end of the supporting horizontal wall E3 and extends inward; the first supporting vertical wall E1 is bonded to the rear edge of the transparent cover plate BP by an elastic material MM; the second supporting vertical wall E2 is connected to the rear end of the supporting horizontal wall E3 and extends outward; the second supporting vertical wall E2 is connected to the outer frame DD.

[0112] In one embodiment of this disclosure, a material that is both elastic and adhesive can be provided between the first supporting vertical wall E1 and the rear edge of the transparent cover plate BP to bond the first supporting vertical wall E1 and the transparent cover plate BP together. In one example, double-sided adhesive is provided between the first supporting vertical wall E1 and the rear edge of the transparent cover plate BP. In a further embodiment, the width (dimension along the inward and outward direction) of the adhesive surface between the double-sided adhesive and the transparent cover plate is 1.1 to 2.0 times, for example, 1.3 to 1.15 times, the width (dimension along the inward and outward direction) of the contact surface between the filter portion and the transparent cover plate.

[0113] In another embodiment of this disclosure, a composite layer formed of an adhesive layer and an elastic material layer can be provided between the first supporting vertical wall E1 and the rear edge of the transparent cover plate BP to bond the first supporting vertical wall E1 and the transparent cover plate BP. In one example, a layered adhesive layer, a cushioning foam layer, and an adhesive layer can be provided between the first supporting vertical wall E1 and the rear edge of the transparent cover plate BP. In other words, the elastic material is foam tape. In the assembled display device, the foam tape is compressed to provide a rebound force to the transparent cover plate BP (as pressure applied to the transparent cover plate BP), thereby ensuring a durable and tight fit between the transparent cover plate BP and the light filter F1, preventing gaps between the transparent cover plate BP and the light filter F1, and thus preventing moisture from entering the interior of the display device from between the transparent cover plate BP and the light filter F1.

[0114] Optionally, the compression rate of the foam tape is 40% to 60%. The greater the stiffness of the foam tape, the lower the compression rate can be, ensuring sufficient pressure is provided for the transparent cover plate BP. In this embodiment, the compression rate of the foam tape refers to the ratio of the thickness reduction of the foam tape in its usage state (thickness without compression - thickness in its usage state) to the thickness of the foam tape when uncompressed.

[0115] In one embodiment of this disclosure, the inner side of the rear frame wall body D31 can be arranged in the front-rear direction, and the outer side of the supporting transverse wall E3 can abut against the inner side of the rear frame wall body D31. In this way, the rear frame wall body D31 can position and support the supporting transverse wall E3, thereby improving the bonding strength and bonding stability between the support member EE and the outer frame DD.

[0116] In one embodiment of this disclosure, a mounting surface is provided on the rear side of the rear frame wall body D31, and the front side of the second support vertical wall E2 can cooperate with the mounting surface.

[0117] In one embodiment of this disclosure, the second supporting vertical wall E2 can be fixed to the rear frame wall body D31, for example by screws or adhesive.

[0118] In one embodiment of this disclosure, the thickness (dimension along the front-to-back direction) of the rear frame wall body D31 can be greater than the thickness (dimension along the inside-to-outside direction) of the outer frame body D1, for example, it can be 1.2 to 2 times the maximum thickness of the outer frame body D1. This improves the strength of the rear frame wall body D31 itself, enabling it to withstand the forces transmitted from the second support vertical wall E2 and the contact portion D33. Furthermore, it allows for a larger bonding area between the rear frame wall body D31 and the outer frame body D1, increasing the bonding strength between them. Ultimately, this ensures that the outer frame DD has sufficient strength to fix the transparent cover plate BP and withstand vibrations generated when the transparent cover plate BP is struck (e.g., by a stylus pen during touch operation).

[0119] In some embodiments of this disclosure, the display device is further provided with a back cover BB, which is located behind the display panel PNL and fixed to the bezel assembly CC.

[0120] In one embodiment of this disclosure, see Figure 2 A gap may be reserved between the second supporting vertical wall E2 and the outer frame body D1; the edge of the back shell BB can be bent and inserted into the reserved gap.

[0121] In one embodiment of this disclosure, see Figures 4-7The rear surface of the filter unit F1 is provided with a sealing groove, and a sealing element GG is disposed within the sealing groove; the sealing element and the transparent cover plate are interference-fitted. Thus, the interference fit between the sealing strip GG and the transparent cover plate BP prevents gaps from forming between them due to loosening or aging; any gaps that may occur will be filled by the sealing strip GG through volume recovery. This arrangement prevents moisture from flowing into the display device along the space between the sealing strip GG and the transparent cover plate BP, thereby preventing potential damage to the electronic components inside the display device.

[0122] Optionally, the sealant fills the sealing groove completely. Furthermore, the width of the sealing groove is not less than 0.5 times the width of the contact surface between the filter element and the transparent cover. In this way, the waterproof effect can be improved by maximizing the width of the contact surface between the sealant and the transparent cover.

[0123] Optionally, the depth of the sealing groove is not less than 0.2 mm. This increases the thickness of the sealing groove, resulting in a larger thickness of the seal filling the groove, which in turn gives the seal greater volume recovery capability, allowing it to eliminate a larger limit gap, thereby improving the seal's waterproofing effect and reliability.

[0124] Optionally, the sealing groove is located away from the outer frame body. In this way, the depth of the opening facing outwards in the contact area between the filter part F1 and the transparent cover plate BP can be minimized, thereby preventing moisture residue and the accumulation of solid matter such as dust in any gaps that may form at the opening. This reduces the aging rate of the filter part F1 and prevents any potential gaps between the filter part F1 and the transparent cover plate BP from being permanently maintained, thus improving waterproof performance and reliability.

[0125] Optionally, the compression of the seal is between 40% and 60%. This gives the seal good volume recovery capability, allowing it to effectively fill any gaps by restoring its volume and achieving a waterproof effect. In this embodiment, the compression of the seal refers to the ratio of the thickness reduction of the seal in its use state (thickness without compression - thickness in use state) to the thickness of the seal in its unused state.

[0126] Optionally, the coefficient of friction between the sealing element and the transparent cover plate is between 1.0 and 3.5. This increases the bonding strength between the sealing strip GG and the transparent cover plate BP, thereby improving the waterproof effect.

[0127] Optionally, the surface roughness of the seal near the transparent cover is in the range of 4 to 12 micrometers. This allows the sealing strip GG to have good hydrophobic properties, thereby improving the waterproof effect.

[0128] Optionally, the seal can also be made by using hydrophobic materials or by surface modification of hydrophobic materials, thereby making the seal hydrophobic and improving its waterproof effect.

[0129] In one example, the seal is a silicone strip. Further, the silicone strip can be a prefabricated silicone strip that can be adhered to the sealing groove using an adhesive (e.g., double-sided tape). Of course, in other embodiments of this disclosure, the seal can also be a prefabricated strip-shaped part made of other materials.

[0130] In one example, the rear surface of the filter element is provided with a sealing groove, which is filled with sealant; the transparent cover and the filter element are sealed together by the sealant. The sealing groove can be filled with a certain degree of elasticity by adding (e.g., dripping) sealant into it; the sealant is shaped by the sealing groove and acts as a seal.

[0131] In the embodiments of this disclosure, a sealing element is provided between the filter section F1 and the transparent cover plate BP to improve the waterproof effect, which can be applied to different types of filter strips and different types of frame assemblies.

[0132] For example, in Figure 4 In one embodiment of the example, the front frame wall may form a fastening groove, and the filter part F1 may have a fastening protrusion that mates with the fastening groove. This arrangement also allows for effective engagement and fixation between the filter part F1 and the front frame wall.

[0133] For another example, in Figure 5In one embodiment of the example, a bent fastening portion D2M may be formed at the end of the front frame wall D2, and the light filter portion F1 may have a fastening cavity that mates with the fastening portion. The fastening portion D2M can be inserted into the fastening cavity, thereby enabling the light filter portion F1 and the front frame wall to effectively mate and connect. Further, the fastening portion D2M of the front frame wall D2 may include a connecting protrusion D2B extending toward the transparent cover plate BP and a positioning protrusion D2C connected to the connecting protrusion D2B and parallel to the transparent cover plate BP. The connecting protrusion D2B is perpendicular to the transparent cover plate BP, and the positioning protrusion D2C is connected to the end of the connecting protrusion D2B near the transparent cover plate BP and extends in a direction away from the infrared touch component AA. Accordingly, the fastening cavity includes a clearance notch, a connecting groove, and a positioning groove; wherein, the positioning groove matches the shape of the positioning protrusion D2C to accommodate the positioning protrusion D2C; the connecting groove matches the shape of the connecting protrusion D2B to accommodate the connecting protrusion D2B; the clearance notch connects to the connecting groove to accommodate the portion D2A of the front frame wall D2 near the connecting protrusion. Thus, by providing the positioning groove and the connecting groove, the fastening portion of the filter unit F1 can be fixedly connected to the fastening cavity of the filter unit F1, especially allowing the positioning protrusion D2C of the front frame wall D2 to be inserted into the positioning groove of the filter unit F1. By providing the clearance notch, the filter unit F1 can accommodate the end of the front frame wall D2, preventing the front frame wall D2 from protruding excessively from the front of the filter unit F1. Furthermore, the thickness of the clearance notch of the filter section F1 is the same as the thickness of the portion of the front frame wall D2 near the fastening part. This allows the portion D2A of the front frame wall D2 near the connecting protrusion to be completely accommodated in the clearance notch. On the one hand, this makes the front surface of the front frame wall D2 flush with the front surface of the filter section F1, and on the other hand, it makes the inner end of the front frame wall D2 completely covered by the filter section F1.

[0134] For another example, in Figure 5 In one embodiment of the example, the filter section F1 may not have a buffer section, and the rear frame wall may not have an abutment section. The display device can fix the transparent cover plate BP in other ways to ensure that the transparent cover plate BP does not slip sideways.

[0135] For another example, in Figure 6 In one embodiment of the example, the end of the filter strip near the frame assembly may have a covering portion connected to the filter part F1, which can cover the side and back edges of the transparent cover plate BP. The rear frame wall may have a support portion, which is connected and buffered to the back of the transparent cover plate BP through the covering portion. Furthermore, the portion of the covering portion located on the back of the transparent cover plate BP has a fixing protrusion, and the support portion of the rear frame wall has a fixing groove that mates with the fixing protrusion. In this way, the covering portion can be prevented from slipping sideways, thereby improving the fixing effect on the transparent cover plate BP.

[0136] For another example, in Figure 7In one embodiment of the example, the bezel assembly may further include a reinforcing portion D4, located outside the outer frame body D1, and having a weight-reducing cavity HH between it and the outer frame body D1. This improves the strength of the bezel assembly. In some specific cases, electronic devices, such as a driving circuit for driving the display panel, may also be arranged in the weight-reducing cavity HH. In this disclosure, the material of the transparent cover plate BP can be an inorganic or organic material. For example, in some embodiments of this disclosure, the material of the transparent cover plate BP can be soda-lime glass, quartz glass, sapphire glass, or other glass materials. For example, in some embodiments of this disclosure, the material of the transparent cover plate BP can be a transparent organic material such as polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polycarbonate (PC), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN).

[0137] In one example, the transparent cover BP is a tempered glass cover.

[0138] In some embodiments of this disclosure, the outer frame DD and the support member EE can be made of metallic materials, such as alloy materials, to improve the strength of the outer frame DD and the support member EE. It is understood that the materials of the outer frame DD and the support member EE can be the same or different. In one example, the outer frame DD and the support member EE are made of aluminum alloy.

[0139] In this disclosure, the display panel PNL can be an OLED display panel (organic light-emitting diode display panel), a MicroLED display panel (micro light-emitting diode display panel), a QD-OLED display panel (quantum dot organic light-emitting diode display panel), a QD-OLED display panel (quantum dot light-emitting diode), an LCD display panel (liquid crystal display panel), an EPD display panel (electrophoretic display panel), or other feasible display panels, as long as they are capable of displaying images. This disclosure does not impose any special limitations. For example, in one embodiment of this disclosure, the display panel is an LCD display panel, which includes a backlight module disposed behind the stacked display modules.

[0140] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display device, wherein, The display device includes a transparent cover plate, a display panel, a frame assembly, and an infrared touch assembly; The border assembly includes an outer frame and a filter strip; The filter strip has a filter portion that presses against the front edge of the transparent cover and a buffer portion located on the side of the transparent cover; the filter strip also includes a limiting protrusion that protrudes outward; the outer frame has an outer frame body, a front frame wall and a rear frame wall; the outer end of the front frame wall is connected to the outer frame body and the inner end presses against the front surface of the filter portion; The outer end of the rear frame wall is connected to the outer frame body and has an abutting part that abuts against the outer side of the buffer part; the buffer part is disposed between the abutting part and the transparent cover plate, so that the abutting part and the transparent cover plate do not directly contact each other; the abutting part abuts against the rear side of the limiting protrusion. An infrared touch component is fixed between the front frame wall and the rear frame wall, and it is equipped with an infrared transmitter or an infrared receiver; the display panel is fixed behind the transparent cover plate.

2. The display device according to claim 1, wherein, The buffer section includes a support section and a guide section, wherein the width of the support section is not less than half the thickness of the transparent cover plate; The guide section is connected to the rear end of the bearing section and is inclined outward.

3. The display device according to claim 2, wherein, The entire outer surface of the bearing section is in contact with the abutting part.

4. The display device according to claim 2, wherein, The angle between the guide section and the side of the transparent cover plate is between 5° and 30°.

5. The display device according to claim 2, wherein, The front edge of the transparent cover is chamfered; The buffer section further includes a transition section, which is parallel to the chamfer of the front edge of the transparent cover plate; The front end of the adapter section is connected to the filter section, and the rear end of the adapter section is connected to the front end of the carrier section.

6. The display device according to claim 1, wherein, The thickness of the buffer section is not less than 1 mm.

7. The display device according to claim 1, wherein, The dimension of the buffer section in the front-to-back direction is 0.9 to 1.3 times the thickness of the transparent cover plate.

8. The display device according to any one of claims 1 to 7, wherein, One of the front frame wall and the filter part is provided with a fastening protrusion and the other is provided with a fastening groove; the fastening protrusion and the fastening groove cooperate with each other to connect the front frame wall and the filter part.

9. The display device according to claim 8, wherein, The front frame wall is provided with a fastening protrusion protruding to the rear, and the thickness of the rear end of the fastening protrusion is greater than the thickness of the front end of the fastening protrusion. The front side of the filter section is provided with a fastening groove that mates with the fastening protrusion; the fastening protrusion is inserted into the fastening groove.

10. The display device according to any one of claims 1 to 7, wherein, The rear frame wall also includes a rear frame wall body and a connecting wall; the outer end of the rear frame wall body is connected to the outer frame body; the connecting wall is connected to the rear frame wall body and extends to connect with the abutting part.

11. The display device according to claim 10, wherein, The rear frame wall body is located on the rear side of the transparent cover plate.

12. The display device according to claim 10, wherein, The connecting wall includes a first connecting wall and a second connecting wall; the rear end of the first connecting wall is connected to the front side of the rear frame wall body, the front end of the first connecting wall is connected to the outer end of the second connecting wall, and the inner end of the second connecting wall is connected to the abutting part.

13. The display device according to claim 12, wherein, An avoidance groove is formed between the first connecting wall, the second connecting wall and the rear frame wall body; The buffer section includes a support section and a guide section; the guide section is connected to the rear end of the support section and extends in the direction of the clearance groove.

14. The display device according to any one of claims 1 to 7, wherein, The frame assembly also includes a support member connected to the outer frame and bonded to the rear edge of the transparent cover plate by an elastic material.

15. The display device according to claim 14, wherein, The support member includes a first vertical support wall, a horizontal support wall, and a second vertical support wall; The first supporting vertical wall is connected to the front end of the supporting horizontal wall and extends inward; the first supporting vertical wall is bonded to the rear edge of the transparent cover plate by an elastic material; The second supporting vertical wall is connected to the rear end of the supporting horizontal wall and extends outward; the second supporting vertical wall is connected to the outer frame.

16. The display device according to claim 14, wherein, The elastic material is double-sided adhesive; The width of the adhesive surface between the double-sided adhesive and the transparent cover plate is 1.1 to 2.0 times the width of the contact surface between the filter part and the transparent cover plate.

17. The display device according to claim 14, wherein, The elastic material is foam tape; wherein the compression rate of the foam tape is 40%~60%.

18. The display device according to any one of claims 1 to 7, wherein, The rear surface of the filter section is provided with a sealing groove, and a sealing element is provided in the sealing groove; the sealing element and the transparent cover plate are interference fit.

19. The display device according to claim 18, wherein, The width of the sealing groove is not less than 0.5 times the width of the contact surface between the filter part and the transparent cover plate.

20. The display device according to claim 18, wherein, The depth of the sealing groove is not less than 0.2 mm.

21. The display device according to claim 18, wherein, The compression of the seal is between 40% and 60%.

22. The display device according to claim 18, wherein, The coefficient of friction between the seal and the transparent cover is between 1.0 and 3.

5.

23. The display device according to claim 18, wherein, The surface roughness of the seal near the transparent cover plate is in the range of 4 to 12 micrometers.

24. The display device according to claim 18, wherein, The seal is hydrophobic.

25. The display device according to claim 18, wherein, The sealing element is a silicone strip.

26. The display device according to any one of claims 1 to 7, wherein, The rear surface of the filter section is provided with a sealing groove, which is filled with sealant; the transparent cover plate and the filter section are sealed together by the sealant.

Images