Frame of display device and display device
The frame redesign with a water clearance structure and absorbent materials redirects and absorbs water, addressing waterproofing issues in infrared touch control frames, ensuring reliable operation and preventing corrosion.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-04-02
AI Technical Summary
Conventional infrared touch control frames in display devices suffer from inadequate waterproofing, leading to water ingress and corrosion of touch control circuit boards, particularly at the bottom side, causing malfunctions and reduced performance.
A redesigned frame structure with a bezel, water clearance structure, and absorbent materials that redirect and absorb water away from sensitive components, including a water blocking structure and absorbent layers to prevent water from reaching the printed circuit board.
Enhances waterproofing capabilities without increasing costs, effectively preventing water ingress and ensuring reliable operation in humid environments, addressing customer complaints and maintaining product performance.
Smart Images

Figure CN2025075213_02042026_PF_FP_ABST
Abstract
Description
FRAME OF DISPLAY DEVICE AND DISPLAY DEVICECROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to Chinese Patent Application No. 202422390659.4, filed September 29, 2024, Chinese Patent Application No. 202422570122.6, filed October 24, 2024, Chinese Patent Application No. 202423137288.5, filed December 18, 2024, and Chinese Patent Application No. 202411875737.8, filed December 18, 2024. Each of the forgoing applications is herein incorporated by reference in its entirety for all purposes.TECHNICAL FIELD
[0002] The present invention relates to display technology, more particularly, to a frame of a display device and a display device.BACKGROUND
[0003] Display panels with touch functionality are widely used in various applications, such as consumer electronics, educational tools, and industrial control systems. These panels enable users to interact directly with digital content through touch-sensitive interfaces, offering intuitive and user-friendly operation.SUMMARY
[0004] In one aspect, the present disclosure provides a frame of a display device, comprising a bezel; a printed circuit board; an assembly groove configured to allow the printed circuit board to be assembled onto the bezel; and a water clearance structure recessing into a portion of the bezel; wherein the water clearance structure is configured to collect residual water and direct it away from the assembly groove.
[0005] Optionally, the water clearance structure recesses into the portion of the bezel, resulting in a height difference with respect to the assembly groove; and the height difference is equal to or greater than 0.2 mm.
[0006] Optionally, the bezel comprises two ribs surrounding two sides of the assembly groove; wherein, during assembly of the printed circuit board, the printed circuit board is configured to slide into a cavity through the assembly groove defined by the two ribs; and the two ribs have a shape conforming to the shape of the water clearance structure.
[0007] Optionally, the water clearance structure comprises a first clearance structure and a second clearance structure connected to each other; and the second clearance structure is between the first clearance structure and the two ribs.
[0008] Optionally, an end of the printed circuit board extends beyond an end of the two ribs; and an orthographic projection of the second clearance structure on a first profile component covers an orthographic projection of a portion of the printed circuit board extending beyond the end of the two ribs on the first profile component.
[0009] Optionally, along an extension direction of the first clearance structure, a length of the first clearance structure is greater than a length of the second clearance structure.
[0010] Optionally, the water clearance structure comprises a water blocking groove; wherein the water blocking groove recesses into the portion of the bezel; wherein the water blocking groove is underneath or outside an entrance to a cavity for receiving the printed circuit board; and the water blocking groove is configured to prevent water from reaching connecting terminals of the printed circuit board inside the cavity.
[0011] Optionally, an orthographic projection of the printed circuit board on a first profile component at least partially overlaps with an orthographic projection of the water blocking groove on the first profile component.
[0012] Optionally, the water clearance structure further comprises an additional clearance structure; along a second direction, an orthographic projection of the water blocking groove on a first profile component is between an orthographic projection of the additional clearance structure on the first profile component and an orthographic projection of the connecting terminals of the printed circuit board on the first profile component; and the second direction is an extension direction of a light-filtering strip.
[0013] Optionally, the frame of the display device comprises a cavity configured to receive the printed circuit board; wherein the bezel comprises a first profile component and a second profile component; the first profile component and the second profile component form two side walls of the cavity; the water clearance structure recesses into the first profile component; and when the frame of the display device is assembled with a display panel, the first profile component is on a side of the second profile component closer to a light emitting side of the display panel.
[0014] Optionally, the frame of the display device further comprises a first absorbent attached to the water clearance structure; wherein an orthographic projection of the first absorbent on a first profile component at least partially overlaps with an orthographic projection of the water clearance structure on the first profile component; the first absorbent has a width along a second direction equal to or less than a width of the water clearance structure along the second direction; and the second direction is an extension direction of a light-filtering strip.
[0015] Optionally, the first absorbent has a thickness equal to or greater than 4.0 mm.
[0016] Optionally, the frame of the display device further comprises a second absorbent attached to the bezel.
[0017] Optionally, the bezel has a third end abutting a cavity receiving at least a portion of the printed circuit board; and the second absorbent is spaced apart from the third end by a spacing distance in a range of 10 to 20 mm.
[0018] Optionally, the frame of the display device further comprises a recess recessing into the bezel on a first side and a second side; wherein the first side is connected to the second side; and the second absorbent is at least partially in the recess, extending from the first side to the second side of the bezel.
[0019] Optionally, the frame of the display device further comprises a water blocking structure configured to prevent water from entering the assembly groove and reaching the printed circuit board.
[0020] Optionally, a side wall of the water clearance structure is aligned flush with a second end of the water blocking structure.
[0021] Optionally, an orthographic projection of the water blocking structure on a third profile component at least partially overlaps with an orthographic projection of the printed circuit board on the third profile component, and is at least partially non-overlapping with the orthographic projection of the printed circuit board on the third profile component.
[0022] Optionally, the printed circuit board comprises a first portion and a second portion spaced apart from each other; and an orthographic projection of the water blocking structure on a third profile component at least partially overlaps with an orthographic projection of the first portion of the printed circuit board on the third profile component, and is at least partially non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component.
[0023] Optionally, a portion of the orthographic projection of the water blocking structure on the first profile component that is non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component has a minimum width along a first direction equal to or greater than 0.5 mm.
[0024] Optionally, an orthographic projection of the second portion of the printed circuit board on the first profile component, the portion of the orthographic projection of the water blocking structure on the third profile component that is non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component, and the orthographic projection of the first portion of the printed circuit board on the first profile component, are sequentially arranged along the first direction.
[0025] Optionally, the orthographic projection of the water blocking structure on the third profile component is non-overlapping with an orthographic projection of the second portion of the printed circuit board on the third profile component.
[0026] Optionally, the orthographic projection of the water blocking structure on the third profile component is spaced apart from the orthographic projection of the second portion of the printed circuit board on the third profile component by a minimum distance along a first direction; and the minimum distance is equal to or greater than 0.5 mm.
[0027] Optionally, the frame of the display device further comprises a light-filtering strip; wherein the light-filtering strip is attached to the water blocking structure; the light-filtering strip has a first end; the water blocking structure has a second end; the first end extends beyond the second end along a second direction; and the second direction is an extension direction of the light-filtering strip.
[0028] Optionally, the first end extends beyond the second end along the second direction by a margin in a range of 0 to 0.3mm.
[0029] Optionally, the printed circuit board has a fourth end; the first end extends beyond the fourth end along the second direction; and the second end extends beyond the fourth end along the second direction.
[0030] In another aspect, the present disclosure provides a display device, comprising the frame described herein, and a display panel, wherein the frame is assembled onto the display panel.
[0031] In another aspect, the present disclosure provides an optical touch frame, characterized by comprising a first frame section, wherein the first frame section extends along a first direction, and includes a first circuit board chamber, an end surface of the first frame section has a first port that communicates with the first circuit board chamber, a sidewall of the first circuit board chamber has a wiring opening, and an opening direction of the wiring opening differs from the opening direction of the first port; a first touch circuit board, wherein the first touch circuit board is located within the first circuit board chamber; a waterproof plug, wherein the waterproof plug is positioned at the first port to seal the first port; and a first connecting wire, wherein the first connecting wire is connected to an end of the first touch circuit board and extends out of the first frame section through the wiring opening.
[0032] In another aspect, the present disclosure provides an optical touch frame, characterized by comprising a first frame section, wherein an interior of the first frame section includes a receiving space, the first frame section has an end surface and a first side surface connected to the end surface, the end surface of the first frame section includes a first port that communicates with the receiving space; a first connecting corner, wherein a first end of the first connecting corner is spliced to the end of the first frame section, the first connecting corner has a splicing surface opposite to the end surface of the first frame section, and a splicing gap exists between the splicing surface and the end surface of the first frame section; and a water collection groove, wherein an area of the splicing surface opposite to the first port includes the water collection groove, which extends into the receiving space; wherein an opening of the water collection groove faces the first side surface and aligns with the splicing gap.
[0033] In another aspect, the present disclosure provides an optical touch frame, characterized by comprising frame body and an optical touch component; wherein an extension direction of the frame body is parallel to a second direction; the frame body includes a plate section and an enclosing section that are oppositely arranged in a third direction, with a receiving space between the plate section and the enclosing section; the second direction intersects with the third direction; wherein, the receiving space contains a first mounting groove and a water guide groove, the first mounting groove is used for installing the optical touch component, both the extension directions of the first mounting groove and the water guide groove are parallel to the second direction.
[0034] In another aspect, the present disclosure provides an optical touch frame, characterized by comprising a frame body and an optical touch component; wherein an extension direction of the frame body is parallel to a first direction, the frame body includes a plate section and an enclosing section that are oppositely arranged in a third direction, with a receiving space between the plate section and the enclosing section; the first direction intersects with the third direction; the optical touch component is installed within the receiving space; and a surface of the plate section facing the enclosing section and / or the surface of the enclosing section facing away from the plate section is provided with a drainage structure. BRIEF DESCRIPTION OF THE FIGURES
[0035] The following drawings are merely examples for illustrative purposes according to various disclosed embodiments and are not intended to limit the scope of the present invention.
[0036] FIG. 1 is a schematic diagram illustrating the structure of a portion of a frame of a display device.
[0037] FIG. 2 is a schematic diagram illustrating a flow path of water entering an assembly groove for attaching a printed circuit board onto a bezel.
[0038] FIG. 3 is a schematic diagram illustrating the structure of structural and functional components in a portion of a frame of a display device.
[0039] FIG. 4 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0040] FIG. 5 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0041] FIG. 6 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0042] FIG. 7 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0043] FIG. 8 is a schematic diagram illustrating the structure of a portion of a frame of a display device before a printed circuit board is assembled into an assembly groove in some embodiments according to the present disclosure.
[0044] FIG. 9 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a printed circuit board is assembled into an assembly groove in some embodiments according to the present disclosure.
[0045] FIG. 10 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a printed circuit board is assembled into an assembly groove and a case is attached in some embodiments according to the present disclosure.
[0046] FIG. 11 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0047] FIG. 12 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0048] FIG. 13 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0049] FIG. 14 is a schematic diagram illustrating the structure of a portion of a frame of a display device before a second absorbent is attached in some embodiments according to the present disclosure.
[0050] FIG. 15 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a second absorbent is attached in some embodiments according to the present disclosure.
[0051] FIG. 16A is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure.
[0052] FIG. 16B is a schematic diagram illustrating orthographic projections of several components of a frame of a display device in some embodiments according to the present disclosure.
[0053] FIG. 17 is a schematic diagram of the structure of an infrared touch display in related technologies;
[0054] FIG. 18 is an enlarged view of area A in FIG. 17;
[0055] FIG. 19 is a schematic cross-sectional view of an infrared touch display in related technologies;
[0056] FIG. 20 is a schematic diagram of the structure of an optical touch frame provided by an embodiment of the present disclosure;
[0057] FIG. 21 is an enlarged view of area B in FIG. 20;
[0058] FIG. 22 is a schematic diagram of the structure at a splicing section of a frame section provided by an embodiment of the present disclosure;
[0059] FIG. 23 is an exploded view of the splicing section of a frame section provided by an embodiment of the present disclosure;
[0060] FIG. 24 is a schematic diagram of the structure at a splicing section of a frame section in related technologies;
[0061] FIG. 25 is a schematic diagram of the structure at a splicing section of a frame section in related technologies;
[0062] FIG. 26 is a schematic diagram of the structure at a splicing section of a frame section provided by an embodiment of the present disclosure;
[0063] FIG. 27 is an exploded view of the splicing section of a frame section provided by an embodiment of the present disclosure;
[0064] FIG. 28 is a schematic diagram of the structure at a splicing section of a frame section provided by an embodiment of the present disclosure;
[0065] FIG. 29 is a schematic diagram of the structure of a waterproof plug provided by an embodiment of the present disclosure;
[0066] FIG. 30 is a schematic diagram of the assembly of a waterproof plug and the first frame section provided by an embodiment of the present disclosure;
[0067] FIG. 31 is a schematic diagram of the structure at a splicing section of a frame section provided by an embodiment of the present disclosure.
[0068] FIG. 32 is a schematic diagram illustrating the structure of an optical touch frame provided in related technologies;
[0069] FIG. 33 is an enlarged view of area A in FIG. 32;
[0070] FIG. 34 is a schematic diagram illustrating the structure of an optical touch frame provided in an embodiment of the present disclosure;
[0071] FIG. 35 is an enlarged view of area B in FIG. 34;
[0072] FIG. 36 is an exploded view of an optical touch frame provided in an embodiment of the present disclosure;
[0073] FIG. 37 is an exploded view of a first connecting corner provided in an embodiment of the present disclosure;
[0074] FIG. 38 is an assembly diagram of a first connecting corner provided in an embodiment of the present disclosure;
[0075] FIG. 39 is a schematic diagram illustrating the structure of a first outer corner provided in an embodiment of the present disclosure;
[0076] FIG. 40 is a schematic diagram illustrating the structure of a first inner corner provided in an embodiment of the present disclosure;
[0077] FIG. 41 is a cross-sectional view of a first connecting corner provided in an embodiment of the present disclosure;
[0078] FIG. 42 is a schematic diagram illustrating the structure of an optical touch frame provided in an embodiment of the present disclosure;
[0079] FIG. 43 is an exploded view of another first connecting corner provided in an embodiment of the present disclosure;
[0080] FIG. 44 is a schematic diagram illustrating the structure of another first outer corner provided in an embodiment of the present disclosure;
[0081] FIG. 45 is a schematic diagram illustrating the structure of another first outer corner provided in an embodiment of the present disclosure;
[0082] FIG. 46 is an exploded view of an optical touch frame provided in an embodiment of the present disclosure;
[0083] FIG. 47 is an assembly diagram of a corner sealing plug provided in an embodiment of the present disclosure;
[0084] FIG. 48 is a schematic diagram illustrating the structure of a corner sealing plug and connection wire provided in an embodiment of the present disclosure;
[0085] FIG. 49 is a schematic diagram illustrating the structure of a corner sealing plug and the first frame section provided in an embodiment of the present disclosure.
[0086] FIG. 50 is a front view of a display device provided in an embodiment of the present disclosure;
[0087] FIG. 51 is a schematic structural diagram of a display device provided in an embodiment of the present disclosure;
[0088] FIG. 52 is a partial enlarged view of an optical touch frame provided in an embodiment of the present disclosure;
[0089] FIG. 53 is a schematic structural diagram of an optical touch frame without optical touch components provided in an embodiment of the present disclosure;
[0090] FIG. 54 is a partial sectional view of an optical touch frame provided in an embodiment of the present disclosure;
[0091] FIG. 55 is a partial enlarged view of a display device provided in an embodiment of the present disclosure;
[0092] FIG. 56 is a partial exploded view of a display device provided in an embodiment of the present disclosure;
[0093] FIG. 57 is a partial enlarged view of another optical touch frame provided in an embodiment of the present disclosure;
[0094] FIG. 58 is a partial sectional view of another optical touch frame provided in an embodiment of the present disclosure;
[0095] FIG. 59 is a partial sectional view of yet another optical touch frame provided in an embodiment of the present disclosure;
[0096] FIG. 60 is a partial sectional view of an optical touch frame in the prior art;
[0097] FIG. 61 is a partial sectional view of another optical touch frame provided in an embodiment of the present disclosure;
[0098] FIG. 62 is a partial enlarged view of another display device provided in an embodiment of the present disclosure;
[0099] FIG. 63 is a partial top view of a display device provided in an embodiment of the present disclosure;
[0100] FIG. 64 is a schematic structural diagram of another display device provided in an embodiment of the present disclosure;
[0101] FIG. 65 is a partial exploded view of another display device provided in an embodiment of the present disclosure.
[0102] FIG. 66 is a front view of the display surface of a display device provided in an embodiment of the present disclosure;
[0103] FIG. 67 is a schematic structural diagram of a display device provided in an embodiment of the present disclosure;
[0104] FIG. 68 is another schematic structural diagram of a display device provided in an embodiment of the present disclosure;
[0105] FIG. 69 is a partial enlarged view of an optical touch frame provided in an embodiment of the present disclosure;
[0106] FIG. 70 is another partial enlarged view of an optical touch frame provided in an embodiment of the present disclosure;
[0107] FIG. 71 is yet another partial enlarged view of an optical touch frame provided in an embodiment of the present disclosure;
[0108] FIG. 72 is a schematic diagram showing water droplets flowing onto the optical touch component;
[0109] FIG. 73 is a partial enlarged bottom view of an optical touch frame provided in an embodiment of the present disclosure;
[0110] FIG. 74 is a partial enlarged view of an optical touch frame without an optical touch component provided in an embodiment of the present disclosure;
[0111] FIG. 75 is another partial enlarged view of an optical touch frame provided in an embodiment of the present disclosure;
[0112] FIG. 76 is a partial enlarged view of an optical touch frame provided in another embodiment of the present disclosure;
[0113] FIG. 77 is another partial enlarged view of an optical touch frame without an optical touch component provided in an embodiment of the present disclosure;
[0114] FIG. 78 is another partial enlarged view of an optical touch frame provided in another embodiment of the present disclosure;
[0115] FIG. 79 is yet another partial enlarged view of an optical touch frame provided in another embodiment of the present disclosure;
[0116] FIG. 80 is another partial schematic diagram of an optical touch frame provided in another embodiment of the present disclosure;
[0117] FIG. 81 is a partial exploded view of an optical touch frame provided in an embodiment of the present disclosure;
[0118] FIG. 82 is a partial enlarged view of a display device provided in an embodiment of the present disclosure;
[0119] FIG. 83 is a partial enlarged view of an optical touch frame provided in yet another embodiment of the present disclosure;
[0120] FIG. 84 is a partial enlarged top view of a display device provided in an embodiment of the present disclosure;
[0121] FIG. 85 is another schematic structural diagram of a display device provided in an embodiment of the present disclosure.DETAILED DESCRIPTION
[0122] The disclosure will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of some embodiments are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.
[0123] Infrared touchscreens, as versatile and interactive multimedia devices, effectively enhance group communication efficiency and facilitate ease of use and writing. They are widely used in education and conference settings. Conventional infrared touch control designs feature a hollow frame structure surrounding the display, which includes a light-filtering strip structure and a PCB cavity structure for the touch frame. The light-filtering strip is pressed onto the surface of the tempered glass, while the touch control PCB board extends into the cavity of the four-sided frame. These frames are connected at the corners to form a loop. Due to the frame being assembled from separate parts, gaps exist at the corners, between frame sections, and at the light-filtering strip joints, resulting in limited waterproof performance. The bottom-side frame faces the highest risk of water ingress, making waterproofing particularly challenging.
[0124] In humid environments, such as during the humid monsoon season or rainy periods, moisture from the external environment can easily penetrate the frame, corroding the touch control circuit board and causing touch malfunctions, thereby impacting product performance. Additionally, when users clean the device with wet cloths to maintain cleanliness, water may seep through the assembly gaps in the frame. Under these circumstances, water droplets can enter the frame cavity through the gaps, damaging the touch control circuit board, leading to malfunctions, reduced product performance, and potential customer complaints.
[0125] Related infrared touch control designs feature a frame surrounding the display device, divided into the top, bottom, left, and right sides. The frame includes a light-filtering strip structure and a printed circuit board cavity structure for the touch frame. The light-filtering strip is pressed onto the surface of the tempered glass, while the touch control printed circuit board is housed within the cavity of the four-sided frame.
[0126] In practical applications, where the display device is placed vertically, using a wet cloth to clean the tempered glass can cause excess water to accumulate at the bottom side. This water spreads along the surface of the tempered glass and the light-filtering strip, eventually entering the printed circuit board cavity of the touch frame from the edge. This leads to corrosion of the touch control printed circuit board, resulting in touch malfunctions in the display terminal.
[0127] Accumulated water on the large surface of the tempered glass flows downward due to gravity. In one example, water enters through frame assembly gaps, corner joints, and frame seams, following the profile grooves and eventually dripping onto the touch frame printed circuit board. In another example, water seeps through the contact area between the light-filtering strip and the tempered glass, infiltrates the back of the display device, and horizontally penetrates the frame's edge, ultimately dripping onto the touch frame printed circuit board. In another example, water enters through the light-filtering strip's corner seams and drips onto the touch frame printed circuit board.
[0128] FIG. 1 is a schematic diagram illustrating the structure of a portion of a frame of a display device. Referring to FIG. 1, the frame of the display device includes a bezel BZ, a light-filtering strip LFS, a glass GL, and a printed circuit board PCB. The frame includes a cavity CV in the bezel configured to receive the printed circuit board PCB. The glass GL is on the bezel BZ. The light-filtering strip LFS is pressed onto a surface of the glass GL. The light-filtering strip LFS is configured to filter external light. The bezel BZ in FIG. 1 may be a portion of a lower bezel of the frame of the display device. The bezel BZ is the main structural component of the frame, providing foundational support for the glass GL, the light-filtering strip LFS, and the printed circuit board PCB. The bezel BZ integrates the cavity CV to house and protect the printed circuit board PCB, ensuring both structural stability and functional alignment.
[0129] FIG. 2 is a schematic diagram illustrating a flow path of water entering an assembly groove for attaching a printed circuit board onto a bezel. As shown in FIG. 2, water WA travels along a flow path FP on the glass GL and the light-filtering strip LFS, entering an assembly groove AG for attaching the printed circuit board PCB onto a bezel BZ, and entering the cavity CV for receiving the printed circuit board PCB. This leads to corrosion of the touch control printed circuit board, resulting in touch malfunctions in the display terminal.
[0130] The present disclosure provides a waterproofing solution for the bottom side of infrared touch frames. By redesigning the structure to alter the water flow path, it enhances the capabilities of blocking, resisting, and redirecting water in infrared touch systems. The solution does not increase costs, ensures ease of assembly, effectively addresses customer complaints related to water ingress, and offers a high overall cost-performance ratio.
[0131] Accordingly, the present disclosure provides, inter alia, a frame of a display device and a display device that substantially obviate one or more of the problems due to limitations and disadvantages of the related art. In one aspect, the present disclosure provides a frame of a display device. In some embodiments, the frame of the display device includes a bezel; a printed circuit board; an assembly groove configured to allow the printed circuit board to be assembled onto the bezel; and a water clearance structure recessing into a portion of the bezel. Optionally, the water clearance structure is configured to collect residual water and direct it away from the assembly groove.
[0132] FIG. 3 is a schematic diagram illustrating the structure of structural and functional components in a portion of a frame of a display device. Referring to FIG. 3, the portion of the frame of the display device includes a first profile component PC1 and a second profile component PC2, which provides the framework for holding other components in place. It ensures stability and alignment across the assembly. The frame of a display device further includes a cavity CV configured to receive a printed circuit board. In some embodiments, the first profile component PC1 and the second profile component PC2 form two side walls of the cavity CV.
[0133] In some embodiments, the portion of the frame of the display device further includes a light-filtering strip LFS, a printed circuit board PCB, and a glass GL, as discussed above. The portion of the frame of the display device further includes a positioning slot PS configured to ensure precise placement of the printed circuit board PCB during assembly, and a water clearance structure WCS recessing into a portion of the bezel. In some embodiments, the water clearance structure WCS recesses into the first profile component PC1. In some embodiments, when the frame of the display device is assembled with a display panel, the first profile component PC1 is on a side of the second profile component PC2 closer to a light emitting side of the display panel.
[0134] In some embodiments, the printed circuit board PCB includes an infrared touch control unit. Optionally, the infrared touch control unit includes one or more infrared emitters and one or more infrared receivers.
[0135] In some embodiments, the light-filtering strip LFS is a light-filtering strip for filtering visible light and allowing infrared light to pass through. Optionally, the light-filtering strip LFS is configured to prevent dirt and contaminates to enter the frame of the display device.
[0136] FIG. 3 also shows a flow path FP through which the water becomes in contact with the printed circuit board PCB. Water comes into contact with a surface of the glass GL, either due to environmental factors (e.g., condensation or humidity) or user actions (e.g., cleaning with a wet cloth) . The light-filtering strip LFS acts as a primary barrier, directing water away from the sensitive internal components. Any water reaching the light-filtering strip is meant to flow laterally or downward toward the flow path FP. A majority of the water is guided out of the assembly through the flow path FP, moving vertically downward and away from sensitive components such as the printed circuit board. However, at least a portion of the water takes an alternative route towards the printed circuit board PCB, as shown in FIG. 3. In the related display device, at least a portion of the water may become in contact with the printed circuit board PCB due to, for example, assembly gaps near the water clearance structure WCS or the positioning slot PS; or imperfect seals or overlaps in the light-filtering strip LFS or profile components PC. Water entering this unintended path risks coming into contact with the printed circuit board PCB, potentially leading to corrosion or electrical failure. This highlights the need for additional waterproofing features or structural refinements.
[0137] FIG. 4 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. FIG. 5 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. FIG. 6 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. FIG. 7 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. Referring to FIG. 4 to FIG. 7, the frame of the display device includes a bezel BZ, a light-filtering strip LFS, a glass GL, and a printed circuit board (including a first portion PCBP1 of the printed circuit board and a second portion PCBP2 of the printed circuit board) .
[0138] The bezel BZ serves as the primary structural component of the frame. The bezel BZ supports other components, such as the light-filtering strip LFS and the printed circuit board. Optionally, the bezel BZ includes an edge EG that defines the frame boundary and connects seamlessly with the surrounding elements. The light-filtering strip LFS is positioned on the bezel BZ.
[0139] In some embodiments, the frame of the display device further includes an assembly groove AG configured to allow the printed circuit board to be assembled onto the bezel BZ. In some embodiments, the frame of the display device further includes two ribs RB surrounding two sides of the assembly groove AG. During assembly of the printed circuit board, the printed circuit board is configured to slide into the cavity through the assembly groove AG defined by the two ribs RB.
[0140] In some embodiments, the frame of the display device further includes a water blocking structure WBS configured to prevent water from entering the assembly groove AG and reaching the printed circuit board (e.g., the first portion PCBP1 of the printed circuit board) . In some embodiments, the light-filtering strip LFS is attached to the water blocking structure WBS. Optionally, the light-filtering strip LFS is detachably attached to the water blocking structure WBS. In one example, the light-filtering strip LFS is pressed onto the water blocking structure WBS.
[0141] In some embodiments, an orthographic projection of the water blocking structure WBS on a base substrate (e.g., a portion of the bezel) at least partially overlaps with an orthographic projection of the first portion PCBP1 of the printed circuit board on the base substrate, and is at least partially non-overlapping with the orthographic projection of the first portion PCBP1 of the printed circuit board on the base substrate. In some embodiments, a portion of the orthographic projection of the water blocking structure WBS on the base substrate that is non-overlapping with the orthographic projection of the first portion PCBP1 of the printed circuit board on the base substrate has a minimum width L along a first direction DR1 equal to or greater than 0.5 mm. In some embodiments, the bezel includes a third profile component PC3 between the first profile component and the second profile component; and the base substrate is the third profile component PC3.
[0142] In some embodiments, the first portion PCBP1 of the printed circuit board and the second portion PCBP2 of the printed circuit board are arranged along the first direction DR1. Optionally, an orthographic projection of the second portion PCBP2 of the printed circuit board on the base substrate, the portion of the orthographic projection of the water blocking structure WBS on the base substrate that is non-overlapping with the orthographic projection of the first portion PCBP1 of the printed circuit board on the base substrate, and the orthographic projection of the first portion PCBP1 of the printed circuit board on the base substrate, are sequentially arranged along the first direction DR1. In some embodiments, the bezel includes a third profile component PC3 between the first profile component and the second profile component; and the base substrate is the third profile component PC3.
[0143] In some embodiments, an orthographic projection of the water blocking structure WBS on a base substrate (e.g., a portion of the bezel) is non-overlapping with an orthographic projection of the second portion PCBP2 of the printed circuit board on the base substrate. In some embodiments, the orthographic projection of the water blocking structure WBS on the base substrate is spaced apart from the orthographic projection of the second portion PCBP2 of the printed circuit board on the base substrate by a minimum distance d along a first direction DR1. Optionally, the minimum distance d is equal to or greater than 0.5 mm. In some embodiments, the bezel includes a third profile component PC3 between the first profile component and the second profile component; and the base substrate is the third profile component PC3.
[0144] In some embodiments, the light-filtering strip LFS has a first end E1, and the water blocking structure WBS has a second end E2. In some embodiments, the first end E1 extends beyond the second end E2 along a second direction DR2. Optionally, the first end E1 extends beyond the second end E2 along the second direction DR2 by a margin in a range of 0 to 0.3mm. Optionally, the second direction DR2 is an extension direction of the light-filtering strip LFS.
[0145] In some embodiments, the frame of the display device further includes a water clearance structure WCS recessing into a portion of the bezel BZ. The water clearance structure WCS is configured to collect residual water and direct it away from the assembly groove AG, safely guiding it out through the edge EG of the bezel BZ. In some embodiments, the water clearance structure WCS recesses into the portion of the bezel BZ, resulting in a height difference Δh with respect to the assembly groove AG. The inventors of the present disclosure discover that, by having the height difference Δh, it can be ensured that water does not overflow into the assembly groove AG. Optionally, the height difference Δh is equal to or greater than 0.2 mm.
[0146] In some embodiments, a side wall SW of the water clearance structure WCS is aligned flush with the second end E2 of the water blocking structure WBS to ensure seamless redirection of water. The inventors of the present disclosure discover that the water clearance structure WCS works in tandem with the water blocking structure WBS to redirect water, preventing it from reaching the assembly groove AG or cavity.
[0147] In some embodiments, the two ribs RB have a shape conforming to the shape of the water clearance structure WCS. The two ribs RB stabilize the printed circuit board while accommodating the channeling design of the water clearance structure WCS.
[0148] FIG. 8 is a schematic diagram illustrating the structure of a portion of a frame of a display device before a printed circuit board is assembled into an assembly groove in some embodiments according to the present disclosure. FIG. 9 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a printed circuit board is assembled into an assembly groove in some embodiments according to the present disclosure. As shown in FIG. 8 and FIG. 9, a first portion PCBP1 of the printed circuit board is assembled onto the bezel through the assembly groove AG, and a second portion PCBP2 is assembled onto the bezel BZ.
[0149] Referring to FIG. 8 and FIG. 9, in some embodiments, the light-filtering strip LFS has a first end E1, the water blocking structure WBS has a second end E2, the first portion PCBP1 of the printed circuit board has a fourth end E4. In some embodiments, the first end E1 extends beyond the fourth end E4 along the second direction DR2; and the second end E2 extends beyond the fourth end E4 along the second direction DR2.
[0150] In some embodiments, the water clearance structure WCS includes a first clearance structure CP1 and a second clearance structure CP2 connected to each other. Optionally, the second clearance structure CP2 is between the first clearance structure CP1 and the two ribs RB.
[0151] In some embodiments, an end (e.g., the fourth end E4) of the printed circuit board extends beyond an end of the two ribs RB. Optionally, an orthographic projection of the second clearance structure CP2 on a portion of the bezel covers an orthographic projection of a portion of the first portion PCBP1 of the printed circuit board extending beyond the end of the two ribs RB on the portion of the bezel.
[0152] In some embodiments, along an extension direction ED of the first clearance structure CP1, a length of the first clearance structure CP1 is greater than a length of the second clearance structure CP2.
[0153] FIG. 10 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a printed circuit board is assembled into an assembly groove and a case is attached in some embodiments according to the present disclosure. Referring to FIG. 10, after the printed circuit board is assembled, a case BL is attached to the bezel BZ.
[0154] FIG. 11 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. FIG. 12 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. FIG. 11 shows a plan view of the portion of the frame, and FIG. 12 shows a perspective view of the portion of the frame. Referring to FIG. 11 and FIG. 12, the frame of the display device in some embodiments further includes a first absorbent WGA1 attached to the water clearance structure WCS. In some embodiments, an orthographic projection of the first absorbent WGA1 on a base substrate at least partially overlaps with an orthographic projection of the water clearance structure WCS on the base substrate. In some embodiments, the first absorbent WGA1 is in direct contact with the water clearance structure WCS. The inventors of the present disclosure discover that the first absorbent WGA1 can further improve water management by absorbing and channeling water efficiently. This enhancement strengthens the overall waterproofing performance of the frame.
[0155] In some embodiments, the first absorbent WGA1 is made of a water-absorbing material to ensure effective water absorption and redirection. In some embodiments, the first absorbent WGA1 has a thickness equal to or greater than 4.0 mm, ensuring sufficient capacity for water absorption. In some embodiments, the first absorbent WGA1 has a width along a second direction DR2 equal to or less than a width of the water clearance structure WCS along the second direction DR2 to ensure seamless integration without obstruction. Optionally, the second direction DR2 is an extension direction of the light-filtering strip.
[0156] In some embodiments, the first absorbent WGA1 is strategically positioned to maximize its contact with the end faces of the water-blocking structure WBS or the light-filtering strip (for example, the first end E1 and the second end E2 depicted in FIG. 4) . This placement enhances the water-guiding effect by creating a continuous pathway for water to flow from the first absorbent WGA1 into the water-clearance structure WCS and ultimately out of the frame.
[0157] In some embodiments, the first absorbent WGA1 adheres securely to the surface of the water-clearance structure WCS, ensuring stability during operation.
[0158] The inventors of the present disclosure discover that, by introducing the first absorbent WGA1, any residual water that bypasses the water-blocking structure WBS is absorbed and redirected efficiently, preventing accumulation near sensitive components. The contact between the first absorbent WGA1 and the end faces of the water-blocking structure WBS or the light-filtering strip creates a more robust barrier against water ingress. The first absorbent WGA1 integrates seamlessly with the water-clearance structure WCS without altering its core function of guiding water out of the frame. The water-absorbing properties and precise dimensions (thickness of at least 4.0 millimeters and width equal to or narrower than the water-clearance structure WCS) ensure compatibility and efficiency in water management. The first absorbent WGA1 operates within the integrated framework of the bezel BZ, adding a secondary layer of protection while preserving the structural integrity of the frame.
[0159] FIG. 13 is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. Referring to FIG. 13, the frame of the display device in some embodiments further includes a second absorbent WGA2 attached to the light-filtering strip LFS and the bezel BZ. The second absorbent WGA2 is strategically placed to block and redirect water from the horizontal infiltration path, ensuring that it flows toward the back of the device instead of entering the cavity CV, guiding the water toward the back of the display device, and safeguarding the cavity CV and the printed circuit board.
[0160] FIG. 14 is a schematic diagram illustrating the structure of a portion of a frame of a display device before a second absorbent is attached in some embodiments according to the present disclosure. FIG. 15 is a schematic diagram illustrating the structure of a portion of a frame of a display device after a second absorbent is attached in some embodiments according to the present disclosure. Referring to FIG. 13 to FIG. 15, the frame of the display device in some embodiments further includes a recess RS recessing into the bezel BZ on a first side S1 and a second side S2, the first side S1 is connected to the second side S2. The second absorbent WGA2 is at least partially in the recess RS, extending from the first side S1 to the second side S2 of the bezel BZ.
[0161] In some embodiments, the bezel BZ has a third end E3 abutting the cavity CV for receiving at least a portion of the printed circuit board PCB. In some embodiments, the second absorbent WGA2 is spaced apart from the third end E3 by a spacing distance sd. In some embodiments, the spacing distance sd is in a range of 10 to 20 mm. In some embodiments, the recess RS is spaced apart from the third end E3 by the spacing distance sd.
[0162] In some embodiments, the second absorbent WGA2 is made of a water-absorbing material, ensuring effective water absorption and redirection. In some embodiments, the second absorbent WGA2 has a thickness in a range of 0.5 to 1.0 mm. In some embodiments, the second absorbent WGA2 is adhered securely to the surfaces it contacts, maintaining stability during operation. The second absorbent WGA2 absorbs water droplets along the horizontal infiltration path. The water travels along the foam, following its placement, and is redirected to the back of the device, away from sensitive areas like the printed circuit board PCB or the assembly groove.
[0163] FIG. 16A is a schematic diagram illustrating the structure of a portion of a frame of a display device in some embodiments according to the present disclosure. Referring to FIG. 16A, the portion of the frame of the display device includes a first profile component PC1 and a second profile component PC2, which provides the framework for holding other components in place. It ensures stability and alignment across the assembly. The frame of a display device further includes a cavity CV configured to receive a printed circuit board. In some embodiments, the first profile component PC1 and the second profile component PC2 form two side walls of the cavity CV.
[0164] In some embodiments, the portion of the frame of the display device further includes a light-filtering strip LFS, a printed circuit board PCB, and a glass GL. The portion of the frame of the display device further includes a positioning slot PS configured to ensure precise placement of the printed circuit board PCB during assembly, and a water clearance structure WCS recessing into a portion of the bezel. In some embodiments, the water clearance structure WCS recesses into the first profile component PC1. In some embodiments, when the frame of the display device is assembled with the display panel, the first profile component PC1 is on a side of the second profile component PC2 closer to a light emitting side of the display panel.
[0165] FIG. 16A also shows one or more flow paths through which the water becomes in contact with the printed circuit board PCB. Water comes into contact with a surface of the glass GL, either due to environmental factors (e.g., condensation or humidity) or user actions (e.g., cleaning with a wet cloth) . The light-filtering strip LFS acts as a primary barrier, directing water away from the sensitive internal components. Any water reaching the light-filtering strip is meant to flow laterally or downward toward a first flow path FP1. A majority of the water is guided out of the assembly through the first flow path FP1, moving vertically downward and away from sensitive components such as the printed circuit board. However, at least a portion of the water takes an alternative route towards the printed circuit board PCB through a second flow path FP2, as shown in FIG. 16A.
[0166] In some embodiments, the portion of the frame of the display device further includes a water blocking groove WBG configured to intercept and redirect water to outside of the frame. The water blocking groove WBG is positioned to capture and channel water along a controlled path, preventing it from reaching sensitive areas like the printed circuit board PCB. In some embodiments, the water blocking groove WBG recesses into the portion of the bezel, preventing water from reaching the printed circuit board PCB in a cavity for receiving the printed circuit board PCB. In particular, the water blocking groove WBG prevents water from reaching connecting terminals of the printed circuit board PCB inside the cavity. Optionally, the water blocking groove WBG is underneath or outside an entrance to the cavity for receiving the printed circuit board PCB. For water that follows a tilted path due to machine inclination, it is intercepted by the water blocking groove WBG and redirected into a lower-positioned groove, ensuring that water flows downward along its path and safely exits the frame without uncontrolled dispersal. By guiding water along predefined channels, the grooves prevent lateral dispersion of water that could otherwise flow onto the touch frame or the printed circuit board PCB, causing potential corrosion and electronic failure.
[0167] In some embodiments, the water blocking groove WBG recesses into the first profile component PC1.
[0168] FIG. 16B is a schematic diagram illustrating orthographic projections of several components of a frame of a display device in some embodiments according to the present disclosure. FIG. 16B shows an orthographic projection of the water clearance structure (denoted as OWCS) on a portion of the bezel, an orthographic projection of the water blocking groove (denoted as OWBG) on the portion of the bezel, an orthographic projection of the printed circuit board (denoted as OPCB) on the portion of the bezel, and an orthographic projection of the connecting terminals of the printed circuit board (denoted as OCT) on the portion of the bezel. In some embodiments, the orthographic projection of the printed circuit board OPCB on the portion of the bezel at least partially overlaps with the orthographic projection of the water blocking groove OWBG on the portion of the bezel. In some embodiments, along the second direction DR2, the orthographic projection of the water blocking groove OWBG on the portion of the bezel is between the orthographic projection of the water clearance structure OWCS on a portion of the bezel and the orthographic projection of the connecting terminals of the printed circuit board OCT on the portion of the bezel.
[0169] In another aspect, the present invention provides a display device, including the frame described herein or fabricated by a method described herein, and a display panel, wherein the frame is assembled onto the display panel. Examples of appropriate display devices include, but are not limited to, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital album, a GPS, etc. Optionally, the display device is an organic light emitting diode display device. Optionally, the display device is a micro light emitting diode display device. Optionally, the display device is a mini light emitting diode display device.
[0170] In another aspect, the present invention provides a method of fabricating a frame of a display device. In some embodiments, the method includes forming a bezel; forming a printed circuit board; forming an assembly groove configured to allow the printed circuit board to be assembled onto the bezel; and forming a water clearance structure recessing into a portion of the bezel. Optionally, the water clearance structure is configured to collect residual water and direct it away from the assembly groove.
[0171] In another aspect, the present invention provides an optical touch frame and a display device designed to prevent water droplets entering through assembly gaps from affecting the first touch circuit board housed within the first frame section.
[0172] In some embodiments, the optical touch frame includes:
[0173] a first frame section, wherein the first frame section extends along a first direction, the first frame section has a first circuit board chamber, the end face of the first frame section has a first port that communicates with the first circuit board chamber, the side wall of the first circuit board chamber has a wiring opening, and the opening direction of the wiring opening is different from the opening direction of the first port;
[0174] a first touch circuit board, wherein the first touch circuit board is located inside the first circuit board chamber;
[0175] a waterproof plug, wherein the waterproof plug is provided at the first port to seal the first port;
[0176] a first connection wire, wherein the first connection wire is connected to the end of the first touch circuit board and extends out of the first frame section through the wiring opening.
[0177] Optionally, the first frame section further includes a functional cavity; wherein the end face of the first frame section has a second port that communicates with the functional cavity;
[0178] The wiring opening communicates the first circuit board chamber with the functional cavity;
[0179] The first connection wire extends out of the first frame section through the wiring opening and the second port.
[0180] Optionally, the first frame section includes a frame body and a light-filtering strip;
[0181] The frame body includes the functional cavity, and the end face of the frame body has the second port;
[0182] The light-filtering strip includes the first circuit board chamber, and the end face of the light-filtering strip has the first port.
[0183] Optionally, it further includes a second frame section arranged opposite the first frame section;
[0184] The wiring opening is located on the side of the first circuit board chamber away from the second frame section, and the functional cavity is located on the side of the first circuit board chamber away from the second frame section.
[0185] Optionally, within the functional cavity, the first connection wire may be routed close to the first side wall of the functional cavity, where the first side wall is the side wall of the functional cavity that is farthest from the first circuit board chamber.
[0186] Optionally, the waterproof plug has an interference fit with the first port.
[0187] Optionally, the waterproof plug is made of a compressible elastic material.
[0188] Optionally, the waterproof plug is made of foam, silicone, or plastic.
[0189] Optionally, the waterproof plug has a grip, and the grip is exposed on the outside of the first frame section.
[0190] Optionally, the waterproof plug has a first guiding part, and the first port has a second guiding part, wherein the first guiding part and the second guiding part cooperate to allow the waterproof plug to be inserted into the first port.
[0191] Optionally, the first guiding part is a guide strip, and the second guiding part is a guide groove extending along the extension direction of the first frame section, wherein the guide strip can be inserted into the guide groove and slidably engaged with the guide groove along the extension direction of the first frame section.
[0192] In another aspect, the present invention provides a display device that includes any of the optical touch frame solutions provided in the above technical scheme.
[0193] In another aspect, the present invention provides an optical touch frame and a display device. The optical touch frame includes a first frame section, wherein the first frame section has a first circuit board chamber, and the end face of the first frame section has a first port that communicates with the first circuit board chamber. The first port of the first circuit board chamber can be sealed with a waterproof plug. The first frame section can be spliced with adjacent frame sections through corner connections, and assembly gaps exist between the end face of the first frame section and the splicing surface of the corner connection. Due to the waterproof plug, excellent water-blocking performance is achieved, ensuring the integrity and sealing of the end face of the first frame section. This prevents water droplets entering through the assembly gaps from reaching the first port of the first circuit board chamber, thereby avoiding the impact of moisture on the first touch circuit board within the first circuit board chamber, and improving product reliability. In addition, the side wall of the first circuit board chamber near the first port has a wiring opening, and the opening direction of the wiring opening is different from the opening direction of the first port. The first connection wire connected to the first touch circuit board inside the first circuit board chamber can exit through the wiring opening on the side wall instead of the first port and connect to the touch circuit board in an adjacent frame section, thereby maintaining the circuit performance of the optical touch frame. Moreover, the optical touch frame has a simple structure, convenient assembly and maintenance, and a high cost-performance ratio.
[0194] In related technologies, the structure of an infrared touch display may be as shown in FIG. 17. FIG. 18 is an enlarged view of area A in FIG. 17, and FIG. 19 is a schematic cross-sectional view of area A in the infrared touch display. In FIG. 17, the optical touch frame of the infrared touch display includes four frame sections 01 spliced together. The corners of the optical touch frame are spliced with adjacent frame sections 01 via connecting corners 04. There are splicing gaps between each frame section 01 and the connecting corners 04. Each frame section 01 contains a touch circuit board 02 in its cavity. The touch circuit boards 02 in the four frame sections 01 are sequentially electrically connected via three connection wires 03, with the connection wires 03 routed on the inner side of the connecting corners 04.
[0195] The four frame sections 01 of the optical touch frame may include the top frame section 011, bottom frame section 012, first side frame section 013, and second side frame section 014. The top frame section 011 is positioned opposite the bottom frame section 012, and the first side frame section 013 is positioned opposite the second side frame section 014. Specifically, the top frame section 011 refers to the frame section located at the top of the infrared touch display when it is in normal use, while the bottom frame section 012 refers to the frame section located at the bottom of the infrared touch display in normal use. The first side frame section 013 and the second side frame section 014 refer to the frame sections located on the left and right sides of the infrared touch display in normal use, respectively. Whether the first side frame section 013 and the second side frame section 014 are on the left or right side of the display is not restricted here and can be determined based on actual circumstances.
[0196] In humid environments or when the display screen is wiped with a wet cloth, external water droplets can easily enter the cavity of the frame through the splicing gaps between the end face of the frame section 01 and the splicing face of the connecting corner 04, as shown in FIG. 19. This can lead to corrosion of the touch circuit board 02 inside the frame section, thereby affecting the performance of the infrared touch display.
[0197] For example, as shown in FIG. 19, path L1 represents the route through which external water droplets enter the internal cavity of the bottom frame section 012. Water entering the optical touch frame from the splicing gap adjacent to the bottom frame section 012 can easily, under the influence of gravity, enter the internal cavity of the bottom frame section 012 through a port on the end face of the bottom frame section 012. This can lead to corrosion of the touch circuit board 02 inside the bottom frame section 012, thereby affecting the performance of the infrared touch display.
[0198] To address the above technical problem, the present disclosure provides an optical touch frame, as illustrated in FIGs. 20, 21, 22, and 23. Specifically, FIG. 20 is a schematic diagram of the structure of an optical touch frame provided in an embodiment of the present disclosure, FIG. 21 is an enlarged view of area B in FIG. 20, FIG. 22 is a schematic diagram of the structure at the splicing section of a frame section provided in an embodiment of the present disclosure, and FIG. 23 is an exploded view of the splicing section of a frame section provided in an embodiment of the present disclosure. In detail, the optical touch frame provided in this embodiment of the present disclosure may include:
[0199] A first frame section 11, which extends along a first direction and has a first circuit board chamber E. The end face of the first frame section 11 has a first port that communicates with the first circuit board chamber E. The side wall of the first circuit board chamber E near the first port features a wiring opening 101.
[0200] A first touch circuit board 21, which is located inside the first circuit board chamber E.
[0201] A waterproof plug 5, which is installed at the first port to seal it.
[0202] A first connection wire 41, which connects to the end of the first touch circuit board 21 and extends out of the first frame section 11 through the wiring opening 101.
[0203] In the optical touch frame provided by this embodiment of the present disclosure, the first frame section 11 includes a first circuit board chamber E. The end face of the first frame section 11 has a first port that communicates with the first circuit board chamber E. The first port of the first circuit board chamber E can be sealed with a waterproof plug 5. The first frame section 11 can be spliced with adjacent frame sections through connecting corners, where splicing gaps exist between the end face of the first frame section 11 and the splicing surface of the connecting corner. Due to the excellent water-blocking function of the waterproof plug 5, the integrity and sealing of the end face of the first frame section 11 are ensured. This prevents water droplets entering through the splicing gaps from reaching the first port of the first circuit board chamber E, thereby avoiding the impact of moisture on the first touch circuit board 21 inside the first circuit board chamber E and improving product reliability.
[0204] Additionally, the side wall of the first circuit board chamber E near the first port features a wiring opening 101. The opening direction of the wiring opening 101 differs from that of the first port. The first connection wire 41 connected to the first touch circuit board 21 inside the first circuit board chamber E does not exit through the first port but instead extends out through the wiring opening 101 on the side wall. This allows it to connect to the touch circuit board in an adjacent frame section, thereby preserving the circuit performance of the optical touch frame. Furthermore, the optical touch frame features a simple structure, is convenient to assemble and maintain, and offers a high cost-performance ratio.
[0205] Specifically, the wiring opening 101 can be positioned on any side wall of the first circuit board chamber E. This is not restricted here and can be determined based on actual circumstances, provided that the first connection wire 41 can extend out through the wiring opening 101 without exiting through the first port of the first frame section 11, thereby maintaining the integrity of the end face of the first frame section 11. For example, as shown in FIG. 22, the wiring opening 101 may be positioned on the side wall of the first circuit board chamber E aligned along the first direction, which is the thickness direction of the optical touch frame.
[0206] It should be noted that the shape of the wiring opening 101 is not limited here and can be determined based on actual circumstances. Specifically, in this embodiment, the optical touch frame can be applied to display devices such as infrared touch screens, conference machines, interactive panels, and electronic whiteboards.
[0207] As shown in FIGs. 20 to 22, the optical touch frame in this embodiment may include four frame sections 1, four touch circuit boards 2, four connecting corners 3, and three connection wires 4. The four frame sections 1 are spliced together using the four connecting corners 3 to form a rectangular frame with connected ends. Each frame section 1 has a circuit board cavity, and its end face features a port communicating with the cavity. Between the end faces of each frame section 1 and the connecting corner 3 are splicing gaps. The four touch circuit boards 2 are correspondingly located inside the circuit board cavities of the four frame sections 1. These touch circuit boards 2 are sequentially connected by the three connection wires 4, ensuring circuit connectivity. Among the four frame sections 1, the first frame section 11 is positioned opposite the second frame section 12, while the third frame section 13 is positioned opposite the fourth frame section 14.
[0208] It should be noted that the number of frame sections 1 in the optical touch frame is not restricted here and can be adjusted according to actual circumstances. Among them, the first frame section 11 may serve as the bottom frame section, specifically referring to the frame section located at the bottom of the display device in its normal operating state. The second frame section 12 may serve as the top frame section, specifically referring to the frame section located at the top of the display device in its normal operating state. The first connection wire 41 connects to the touch circuit board arranged inside the bottom frame section.
[0209] The first port on the end face of the first frame section 11 is sealed with a waterproof plug 5, providing effective waterproofing by preventing water entering the optical touch frame through splicing gaps from entering the first circuit board chamber E via the first port. This design protects the first touch circuit board 21 from corrosion. Specifically, the first frame section 11 may have the first port on only one end, or on both ends, without restriction, depending on the actual circumstances. The first connection wire 41 connected to the end of the first touch circuit board 21 inside the first frame section 11 may exit through the wiring opening 101 on the side wall of the first circuit board chamber E to connect to the touch circuit board 2 inside the adjacent third frame section 13 or fourth frame section 14, ensuring circuit connectivity. The connection wires 4 connected to the touch circuit boards 2 in the second frame section 12, third frame section 13, and fourth frame section 14 may exit through the ports on the end faces of the respective frame sections 1.
[0210] Specifically, the above-mentioned connection wire 4 can be a flat flexible cable (FFC) , and the end of the touch circuit board 2 can be equipped with a connection port. The connection wire 4 can be connected to the connection port.
[0211] As shown in FIG. 21, the connecting corner 3 can include an inner corner 31 and an outer corner 32. Both ends of the inner corner 31 can be fixedly connected to the adjacent frame sections 1 using screws, thereby achieving secure locking of the frame. The outer corner 32 can be positioned on the outside of the inner corner 31 and fixedly connected to it. The splicing surface at both ends of the outer corner 32 can splice with the end faces of the adjacent frame sections 1. There are splicing gaps between the splicing surface of the outer corner 32 and the end faces of the adjacent frame sections 1. The outer corner 32 serves as a transitional feature for the appearance of the optical touch frame, improving its aesthetic quality. The connection wire 4 can be arranged along the first direction with the inner corner 31, routed on the inner side of the outer corner 32. The first direction corresponds to the thickness direction of the optical touch frame.
[0212] Considering the material tolerances and actual assembly tolerances of the optical touch frame, the splicing gap between the outer corner 32 and the adjacent frame section 1 can range from 0.2 mm to 0.5 mm. This splicing gap cannot be completely sealed.
[0213] As shown in FIG. 20, among the four frame sections 1 of the optical touch frame, the touch circuit board 2 in the second frame section 12 can include an infrared emission unit to provide infrared light to the first frame section 11. The first touch circuit board 21 in the first frame section 11 can include an infrared reception unit for receiving infrared light. Similarly, the touch circuit board 2 in the fourth frame section 14 can include an infrared emission unit to provide infrared light to the third frame section 13, while the touch circuit board 2 in the third frame section 13 can include an infrared reception unit for receiving the infrared light. The infrared emission unit can consist of multiple infrared emitters arranged along the extension direction of the frame section 1, and the infrared reception unit can consist of multiple infrared receivers corresponding to the infrared emitters. The optical touch frame enables touch recognition functionality through the paired infrared emission units and infrared reception units.
[0214] In this embodiment, as shown in FIGs. 22 and 23, the first frame section 11 may further include a functional cavity F. The end face of the first frame section 11 may feature a second port that communicates with the functional cavity F. The wiring opening 101 connects the first circuit board chamber E with the functional cavity F. The first connection wire 41 extends out of the first frame section 11 through the wiring opening 101 and the second port. The functional cavity F provides cable management space for the first connection wire 41 and guides its routing direction, facilitating the arrangement of the first connection wire 41.
[0215] The functional cavity F can also house functional buttons or other components, which are not shown here and can be determined based on actual circumstances.
[0216] As shown in FIGs. 22 and 23, the first frame section 11 can be an integrated structure.
[0217] As shown in FIG. 22, the optical touch frame can also include a light-filtering strip 6. The light-filtering strip 6 can seal the side face of the first frame section 11, enhancing the waterproof performance of the optical touch frame. Additionally, the light-filtering strip 6 can filter light received by the infrared reception unit on the first touch circuit board 21 within the first frame section 11, optimizing touch recognition performance.
[0218] In related technologies, as shown in FIGs. 24 and 25, FIGs. 24 and 25 illustrate a schematic diagram of a splicing structure of a frame section. The light-filtering strip can be configured as a tubular light-filtering strip 05, with the touch circuit board placed inside the tubular light-filtering strip 05. The connection wire 03 connected to the touch circuit board can exit through the end of the tubular light-filtering strip 05. The tubular light-filtering strip 05 serves the function of filtering light and enhances the sealing effect for the touch circuit board. However, the end face of the tubular light-filtering strip 05 cannot be completely sealed. Additionally, as shown in FIG. 25, a waterproof structure 06 can be inserted at the end face of the tubular light-filtering strip 05. However, due to the need for clearance for the connection wire 03, water droplets entering the optical touch frame through the splicing gaps may still enter through the end face of the tubular light-filtering strip 05, damaging the touch circuit board and affecting the product performance of the display device.
[0219] To address the above technical problem, in this embodiment of the present disclosure, the first frame section 11 can include a frame body 111 and a light-filtering strip 112. The frame body 111 includes a functional cavity F, and the end face of the frame body 111 has a second port. The light-filtering strip 112 contains the first circuit board chamber E, and the end face of the light-filtering strip 112 has a first port. As shown in FIGs. 26 and 27, FIG. 26 illustrates a schematic diagram of a splicing structure of a frame section provided in this embodiment, and FIG. 27 is an exploded view of the splicing structure provided in this embodiment.
[0220] In this embodiment, the light-filtering strip 112 on the first frame section 11 is configured as tubular, and the first touch circuit board 21 is placed inside the tubular light-filtering strip 112. The waterproof plug 5 seals the first port on the light-filtering strip 112, and the wiring opening 101 is arranged on the side wall of the light-filtering strip 112. This configuration enhances the sealing of the first touch circuit board 21, preventing external water droplets from entering the first circuit board chamber E and thus avoiding corrosion of the first touch circuit board 21, ensuring the performance of the display device.
[0221] The functional cavity F on the frame body 111 can provide cable management space for the first connection wire 41 and guide its routing direction, facilitating the arrangement of the first connection wire 41.
[0222] As shown in FIGs. 22, 23, 26, and 27, this embodiment also includes a second frame section 12 arranged opposite to the first frame section 11. The wiring opening 101 is located on the side of the first circuit board chamber E that faces away from the second frame section 12, and the functional cavity F is also positioned on the side of the first circuit board chamber E that faces away from the second frame section 12. The functional cavity F communicates with the first circuit board chamber E through the wiring opening 101. In this configuration, under normal usage of the infrared touch display, water droplets entering the optical touch frame through the splicing gaps will not enter the first circuit board chamber E of the first frame section 11 via the wiring opening 101 due to the effect of gravity. This prevents corrosion of the first touch circuit board 21 inside the first circuit board chamber E.
[0223] In related technologies, as shown in FIG. 19, water droplets entering through splicing gaps may also fall on the connection wire 03, seep along the connection wire 03, and damage the touch circuit board 2.
[0224] In this embodiment, to prevent water droplets from seeping along the first connection wire 41 into the first touch circuit board 21 in the first frame section 11, the first connection wire 41 is routed close to the first side wall of the functional cavity F. The first side wall is the side wall of the functional cavity F that faces away from the first circuit board chamber E. As shown in FIGs. 26 to 28, FIG. 28 illustrates a schematic diagram of the splicing structure of a frame section in this embodiment, with dashed lines showing the routing path of the first connection wire 41. This routing method increases the length of the cable management path of the first connection wire 41. During normal usage of the display device, due to the effect of gravity, the first connection wire 41 naturally sags and the bending area increases, extending as much as possible toward the bottom side. Under the effect of gravity, moisture cannot seep upward to the first touch circuit board 21, thus preventing corrosion of the first touch circuit board 21.
[0225] In this embodiment, the waterproof plug 5 can have an interference fit with the first port of the first frame section 11, ensuring that the waterproof plug 5 is tightly fitted with the first port, providing excellent sealing performance.
[0226] Specifically, the gap between the waterproof plug 5 and the first port can be designed to range from 0 mm to -0.3 mm, allowing the waterproof plug 5 to have an interference fit with the first port and achieve effective water-blocking functionality.
[0227] In the present disclosure, the waterproof plug 5 is made of a compressible elastic material, ensuring that it can be securely inserted into the first port. Specifically, the material of the waterproof plug 5 can be foam, silicone, or plastic, which are simple materials that are easy to manufacture. Alternatively, the material of the waterproof plug 5 can also be other materials, without limitation, depending on actual circumstances.
[0228] In this embodiment, the waterproof plug 5 can include a grip 51, which is exposed on the outside of the first frame section 11, as shown in FIG. 29. FIG. 29 illustrates a schematic diagram of the structure of a waterproof plug provided in this embodiment. The grip 51 on the waterproof plug 5 facilitates handling and assembly on production lines, improving operational convenience.
[0229] As shown in FIG. 29, the waterproof plug 5 may also include a first guiding part 52. The first port of the first frame section 11 may include a second guiding part. The first guiding part 52 cooperates with the second guiding part to guide the insertion of the waterproof plug 5 into the first port. The guiding feature ensures that the waterproof plug 5 can be easily inserted along the extension direction of the first frame section 11, facilitating assembly during production. As shown in FIG. 30, FIG. 30 illustrates a schematic diagram of the assembly structure of the waterproof plug and the first frame section provided in this embodiment.
[0230] Specifically, the first guiding part 52 can be a guide strip, and the second guiding part can be a guide groove extending along the extension direction of the first frame section 11. During assembly, the guide strip can be inserted into the guide groove, allowing the guide strip to slide within the guide groove along the extension direction of the first frame section 11. This sliding fit simplifies the assembly of the waterproof plug 5.
[0231] Optionally, the specific shape of the first frame section 11 is not limited here and can be determined based on actual circumstances. Similarly, the shape of the end face of the waterproof plug 5 can correspond to the shape of the first port, without limitation, depending on the actual circumstances.
[0232] The specific structure of the optical touch frame in this embodiment is shown in FIG. 20. The assembly process of this optical touch frame can be as follows:
[0233] First, place the touch circuit board 2 inside the circuit board cavity of the corresponding frame section 1. Next, use the four inner corners 31 to assemble the four frame sections 1 together.
[0234] Then, connect the three connection wires 4 to the touch circuit boards 2 inside the four frame sections 1, ensuring that the four touch circuit boards 2 are sequentially connected. The first connection wire 41 connected to the first touch circuit board 21 inside the first frame section 11 exits through the wiring opening 101 of the first frame section 11. As shown in FIG. 31, FIG. 31 illustrates a schematic diagram of the assembly of the first connection wire 41 in this embodiment. In FIG. 31, the first connection wire 41 is connected to the connection port of the first touch circuit board 21 and exits through the wiring opening 101 on the first frame section 11 to connect with the connection port on the first touch circuit board 21.
[0235] Next, seal the first port of the first frame section 11 with the waterproof plug 5.
[0236] Finally, assemble the four outer corners 32, attaching them to the outer sides of the four inner corners 31 to optimize the appearance of the optical touch frame.
[0237] The present disclosure further provides a display device, which includes any of the optical touch frames described in the above technical solutions.
[0238] In the display device provided in this embodiment, the optical touch frame includes a first frame section. The first frame section has a first circuit board chamber, and its end face features a first port that communicates with the first circuit board chamber. The first port of the first circuit board chamber can be sealed with a waterproof plug. The first frame section can be spliced with adjacent frame sections through connecting corners, and there are splicing gaps between the end face of the first frame section and the splicing surface of the connecting corners. Due to the excellent water-blocking performance of the waterproof plug, the integrity and sealing of the end face of the first frame section are ensured, preventing water droplets entering through the splicing gaps from reaching the first port of the first circuit board chamber. This design protects the first touch circuit board inside the first circuit board chamber from moisture, enhancing product reliability.
[0239] Additionally, the side wall of the first circuit board chamber near the first port features a wiring opening, whose opening direction differs from that of the first port. The first connection wire connected to the first touch circuit board inside the first circuit board chamber exits through the wiring opening on the side wall instead of the first port. This allows it to connect to the touch circuit board in an adjacent frame section, ensuring the circuit performance of the optical touch frame. Furthermore, the optical touch frame has a simple structure, is easy to assemble and maintain, and offers a high cost-performance ratio.
[0240] The above-mentioned display device can be an infrared touch screen, a conference machine, an interactive panel, or an electronic whiteboard.
[0241] Specifically, the display device can be an infrared touch screen, which further includes a display module and a main control circuit board. The optical touch frame can encase the periphery of the display module. The display module may be a liquid crystal display module or an organic electroluminescent display module. The main control circuit board is signal-connected to the touch circuit board 2 in the optical touch frame and is also signal-connected to the display module. The main control circuit board can control the display of the display module based on the signals transmitted or received by the touch circuit board 2.
[0242] In another aspect, the present disclosure provides the following technical solution:
[0243] An optical touch frame, comprising:
[0244] A first frame section, wherein the first frame section has an internal accommodating space, the first frame section has an end face and a first side face connected to the end face, and the end face of the first frame section has a first port communicating with the accommodating space;
[0245] A first connecting corner, wherein a first end of the first connecting corner is spliced with the end of the first frame section, the first connecting corner has a splicing surface opposite the end face of the first frame section, and there is a splicing gap between the splicing surface and the end face of the first frame section;
[0246] The area of the splicing surface opposite the first port includes a water-collection groove, the water-collection groove extends into the accommodating space, and the opening of the water-collection groove faces the first side face and corresponds to the splicing gap.
[0247] Optionally, the bottom of the water-collection groove may have a water-guiding opening.
[0248] The first connecting corner may further include a flow-guiding structure, the flow-guiding structure may communicate with the water-guiding opening, and the flow-guiding structure may be used to direct water from the water-collection groove outward.
[0249] The first connecting corner may include a first inner corner and a first outer corner. The first end of the first inner corner may be fixedly connected to the first frame section. The first outer corner may be located outside the first inner corner, and the first end of the first outer corner may include the splicing surface.
[0250] The flow-guiding structure may be located on the side of the first inner corner facing the bottom of the water-collection groove. The flow-guiding structure may direct water from the water-collection groove to the first side of the first inner corner along a first direction, wherein the first direction is the thickness direction of the first connecting corner.
[0251] The flow-guiding structure may include a first water guide groove and a drainage channel. The first water guide groove may face the water-guiding opening, and the water-guiding opening may extend into the first water guide groove. A first end of the drainage channel may communicate with the first water guide groove, and a second end of the drainage channel may extend to the first side of the first inner corner along the first direction.
[0252] The flow-guiding structure may include a second water guide groove, the second water guide groove may be located on one side of the first connecting corner along the first direction, wherein the first direction is the thickness direction of the first connecting corner. The water-collection groove may communicate with the second water guide groove through the water-guiding opening.
[0253] The first frame section may have a first side face and a second side face arranged oppositely. The second end of the first connecting corner may bend toward the second side face, moving away from the first side face.
[0254] The accommodating space may include a functional cavity and a circuit board cavity. The functional cavity may communicate with the first port. The circuit board cavity may be located on the side of the functional cavity away from the first side face and may be used to accommodate a touch circuit board. The end face of the first frame section may have a second port communicating with the circuit board cavity, wherein the second port is located on the side of the first port away from the first side face.
[0255] The first frame section may include a first sub-frame and a second sub-frame stacked together. The first sub-frame may have the functional cavity and the first port, while the second sub-frame may have the circuit board cavity and the second port.
[0256] The optical touch frame may further include a second frame section. The first end of the second frame section may be spliced with the second end of the first connecting corner. The second frame section may have a circuit board cavity for accommodating a touch circuit board, and the end face of the second frame section may have a third port communicating with the circuit board cavity.
[0257] The optical touch frame may further include a corner sealing plug. The corner sealing plug may be located inside the first connecting corner. A first end of the corner sealing plug may contact the end face of the first frame section and correspond to the second port, and a second end of the corner sealing plug may contact the end face of the second frame section and correspond to the third port.
[0258] The optical touch frame may further include two touch circuit boards and a connection wire. The two touch circuit boards may be respectively located in the circuit board cavities of the first and second frame sections. The ends of the two touch circuit boards may be connected by the connection wire. The corner sealing plug may have a communication cavity, and the communication cavity may communicate with the circuit board cavities. The connection wire may route through the communication cavity.
[0259] The Shore hardness of the corner sealing plug may range from 40 to 80.
[0260] The end of the corner sealing plug corresponding to the port communicating with the circuit board cavity may include a guiding structure, and the guiding structure may facilitate insertion into the circuit board cavity.
[0261] The end of the corner sealing plug corresponding to the port communicating with the circuit board cavity may include a limiting structure. The end of the touch circuit board may extend out of the circuit board cavity and contact the limiting structure.
[0262] The present disclosure also provides a display device that includes any of the optical touch frames described above.
[0263] The optical touch frame provided in the present disclosure includes a first frame section with an accommodating space for housing a touch circuit board. The first frame section is spliced with the first end of the first connecting corner, forming a splicing gap between the end face of the first frame section and the splicing surface of the first connecting corner. The area of the splicing surface opposite the first port of the first frame section features a water-collection groove that extends into the accommodating space. The opening of the water-collection groove faces the first side face of the first frame section and corresponds to the splicing gap. When external water enters the first frame section from the side where the first side face is located through the splicing gap, the water droplets can be blocked and accumulated in the water-collection groove, preventing the water droplets from entering the accommodating space. This effectively solves the problem of water droplets corroding the touch circuit board inside the accommodating space, achieving excellent waterproof performance.
[0264] In related technologies, the structure of an infrared touch display screen may be as shown in FIG. 32 and 33. In FIG. 32, the optical touch frame of the infrared touch display screen includes four frame sections 01 spliced together. Each frame section 01 has a cavity containing a touch circuit board 02, and the four touch circuit boards 02 are electrically connected sequentially. The corners of the optical touch frame are spliced with adjacent frame sections 01 via connecting corners 03, and there are splicing gaps between the ends of the connecting corners 03 and the ends of the adjacent frame sections 01. These splicing gaps are unavoidable and cannot be completely sealed.
[0265] The four frame sections 01 of the optical touch frame include a top frame section 011, a bottom frame section 012, a first side frame section 013, and a second side frame section 014. The top frame section 011 is positioned opposite the bottom frame section 012, while the first side frame section 013 is positioned opposite the second side frame section 014. Specifically, the top frame section 011 refers to the frame section located at the top of the infrared touch display screen in its normal operating state, while the bottom frame section 012 refers to the frame section located at the bottom of the infrared touch display screen in its normal operating state. The first side frame section 013 and the second side frame section 014 refer to the frame sections located on the left and right sides of the infrared touch display screen, respectively, in its normal operating state.
[0266] In humid environments or when the display screen is wiped with a wet cloth, external water droplets can easily enter the cavity of the frame section through the splicing gaps between the frame sections 01 and the connecting corners 03. This can lead to corrosion of the touch circuit board 02, resulting in touch malfunction and adversely affecting the performance of the infrared touch display screen.
[0267] For example, as shown in FIG. 33, the path of external water droplets (d) entering the cavity of the top frame section 011 is through the splicing gap between the top frame section 011 and the connecting corner 03. Under the influence of gravity, the water droplets can easily reach the port of the cavity in the top frame section 011 and enter the cavity, corroding the touch circuit board 02 inside the top frame section 011 and affecting the performance of the infrared touch display screen.
[0268] To address the above technical problem, the present disclosure provides an optical touch frame, as shown in FIG. 34 to FIG. 36, which includes:
[0269] A first frame section 11, wherein the first frame section 11 has an internal accommodating space. The first frame section 11 has an end face and a first side face connected to the end face. The end face of the first frame section 11 has a first port communicating with the accommodating space.
[0270] A first connecting corner 3, wherein the first end of the first connecting corner 3 is spliced with the end of the first frame section 11. The first connecting corner 3 has a splicing surface opposite the end face of the first frame section 11, and there is a splicing gap between the splicing surface and the end face of the first frame section 11.
[0271] The area of the splicing surface opposite the first port includes a water-collection groove 301. The water-collection groove 301 extends into the accommodating space, and its opening faces the first side face and corresponds to the splicing gap.
[0272] In the optical touch frame provided in this embodiment of the present disclosure, the first frame section 11 has an accommodating space for housing a touch circuit board 2. The first frame section 11 is spliced with the first end of the first connecting corner 3, forming a splicing gap between the end face of the first frame section 11 and the splicing surface of the first connecting corner 3. The area of the splicing surface opposite the first port of the first frame section 11 features a water-collection groove 301 that extends into the accommodating space. The opening of the water-collection groove 301 faces the first side face of the first frame section 11 and corresponds to the splicing gap. When external water enters the first frame section 11 from the side where the first side face is located through the splicing gap, the water droplets can be blocked and collected in the water-collection groove 301, preventing them from entering the accommodating space. This effectively addresses the issue of water corrosion on the touch circuit board 2 inside the accommodating space, achieving excellent waterproof performance.
[0273] The optical touch frame provided in the present disclosure can be applied to display devices such as infrared touch screens, conference machines, interactive panels, and electronic whiteboards.
[0274] In the present disclosure, the optical touch frame may include four frame sections 1 and four connecting corners 3’. The four frame sections 1 are spliced together using the four connecting corners 3’ to form a closed rectangular frame. These include opposing top and bottom frame sections and opposing first and second side frame sections. Optionally, the number of frame sections in the optical touch frame is not limited and can be adjusted based on actual requirements.
[0275] It should be noted that the top frame section refers to the frame section 1 positioned at the top of the display device during normal operation, while the bottom frame section refers to the frame section 1 positioned at the bottom of the display device. Similarly, the first and second side frame sections refer to the frame sections 1 located on the left and right sides of the display device during normal operation. The specific positioning of the first and second side frame sections is not restricted and can be determined according to actual circumstances.
[0276] As shown in FIG. 34 and FIG. 35, the first frame section 11 can serve as the top frame section, with its first side face located at the top of the frame. The first connecting corner 3 can connect to the end of the top frame section as connecting corner 3’.
[0277] In this embodiment, the first connecting corner 3 is equipped with a water-collection groove 301, with its bottom featuring a water-guiding opening 3011. The first connecting corner 3 may also include a flow-guiding structure 302, which is connected to the water-guiding opening 3011. The flow-guiding structure 302 is designed to direct water from the water-collection groove 301 out of the first frame section 11.
[0278] When external water droplets enter the first frame section 11 through the splicing gap, they are intercepted by the water-collection groove 301 and collected within it. Water in the water-collection groove 301 flows through the water-guiding opening 3011 into the flow-guiding structure 302, which directs it out of the first frame section 11. This prevents water droplets from entering the accommodating space and corroding the touch circuit board 2, achieving effective waterproofing.
[0279] In this embodiment, the bottom surface of the water-collection groove 301 can be inclined toward the water-guiding opening 3011 to ensure that water flows smoothly into the water-guiding opening 3011 for redirection by the flow-guiding structure 302.
[0280] As shown in FIG. 34 and FIG. 35, each connecting corner 3’ may include an inner corner and an outer corner. The inner corner is fixedly connected to the frame sections at both ends, while the outer corner is positioned on the outside of the inner corner. The ends of the outer corner splice with the ends of the frame sections, leaving splicing gaps. The inner corner provides a secure connection between adjacent frame sections, while the outer corner enhances the aesthetic appearance of the optical touch frame, improving user experience.
[0281] Specifically, the inner corners may be fixed to adjacent frame sections 1 using screws, ensuring a stable connection. The middle section of the outer corner may have a connecting section located on the first side of the inner corner along its thickness direction, secured to the inner corner using screws. The splicing gap between the ends of the outer corner and the frame sections may range from 0.2 mm to 0.6 mm, considering material and assembly tolerances.
[0282] As shown in FIG. 35 through FIG. 39, the first connecting corner 3 may include a first inner corner 31 and a first outer corner 32. The first end of the first inner corner 31 is fixedly connected to the first frame section 11, while the first outer corner 32 is positioned on the outside of the first inner corner 31. The first outer corner 32 features a splicing surface, and the water-collection groove 301 may be integrated into the first outer corner 32, simplifying the structure for easy manufacturing.
[0283] The water-collection groove 301 on the first outer corner 32 aligns closely with the side wall of the accommodating space in the first frame section 11 along the thickness direction of the first connecting corner 3, preventing water droplets from bypassing the water-collection groove 301 and entering the accommodating space. The shape and size of the water-collection groove 301 are not limited and can be determined based on actual circumstances.
[0284] For example, as shown in FIG. 38, the width of the water-collection groove 301 along the thickness direction of the first connecting corner 3 can be L1, while the width of the accommodating space in the first frame section 11 along the same direction is a. The difference (a-L1) can range from 0 to 0.1 mm, ensuring a close fit between the sides of the water-collection groove 301 and the side walls of the accommodating space. The range of (a-L1) may also vary depending on specific circumstances.
[0285] Specifically, the first outer corner 32 and the water-collection groove 301 can be integrated into a single structure, simplifying design and avoiding additional material costs. Alternatively, the first outer corner 32 and the water-collection groove 301 may be separate components, connected via snap-fit mechanisms. The materials of the first outer corner 32 and the water-collection groove 301 can be identical or different.
[0286] As shown in FIG. 36, the flow-guiding structure 302 on the first connecting corner 3 may be positioned on the side of the first inner corner 31 facing the bottom of the water-collection groove 301. The flow-guiding structure 302 directs water from the water-collection groove 301 to the first side of the first inner corner 31 along the thickness direction of the first connecting corner 3.
[0287] In the optical touch frame, the flow-guiding structure 302 on the first inner corner 31 redirects water collected in the water-collection groove 301 to the outside of the first frame section 11. This prevents water droplets entering through the splicing gap between the first frame section 11 and the first connecting corner 3 from corroding the touch circuit board 2 housed inside the first frame section 11.
[0288] In the present disclosure, as shown in FIG. 37, FIG. 38, and FIG. 40, the flow-guiding structure 302 may include a first water guide groove 3021 and a drainage channel 3022. The first water guide groove 3021 aligns with the water-guiding opening 3011 of the water-collection groove 301, with the water-guiding opening 3011 extending into the water guide groove. The first end of the drainage channel 3022 communicates with the first water guide groove 3021, while the second end extends to the first side of the first inner corner 31 along the thickness direction of the first connecting corner 3. This flow-guiding structure 302 is easy to manufacture, does not increase material costs, and is simple to assemble, making maintenance convenient and cost-effective.
[0289] Specifically, as shown in FIG. 41, when water droplets (d) enter through the splicing gap between the first frame section 11 and the first outer corner 32, they are intercepted by the water-collection groove 301 on the first outer corner 32 and collected within it. Due to gravity, the water flows from the water-collection groove 301 through the water-guiding opening 3011 into the first water guide groove 3021 on the first inner corner 31 and is then directed by the drainage channel 3022 to the outside of the first frame section 11. This effectively prevents water from seeping into the accommodating space of the first frame section 11 and corroding the touch circuit board 2.
[0290] The bottom surface of the first water guide groove 3021 can be inclined toward the drainage channel 3022, ensuring that water flows smoothly toward the drainage channel 3022, facilitating the removal of water collected in the water-collection groove 301.
[0291] The bottom surface of the first water guide groove 3021 can be designed as either flat or curved, without limitation, depending on actual circumstances. For example, if the bottom surface of the first water guide groove 3021 is flat, its incline angle can range from 0 to 5 degrees or other values as required by the specific application.
[0292] As shown in FIG. 38 and FIG. 41, the water-guiding opening 3011 at the bottom of the water-collection groove 301 extends into the first water guide groove 3021, which encapsulates the water-guiding opening 3011. This ensures that water collected in the water-collection groove 301 naturally flows into the first water guide groove 3021. The structure and size of the water-guiding opening 3011 are not limited and can be adjusted based on actual requirements.
[0293] For example, as shown in FIG. 39 and FIG. 40, the length of the first water guide groove 3021 along the extension direction of the first frame section 11 can be L2, and its width along the thickness direction of the first inner corner 31 can be L3. The length of the water-guiding opening 3011 along the extension direction of the first frame section 11 is L4, and its width along the thickness direction of the first inner corner 31 is L5. For ease of assembly between the first outer corner 32 and the first inner corner 31, L2 should be greater than L4, for instance, L2 ≥ 2 × L4. Similarly, L3 should be greater than L5, with L3 minus L5 ranging from 0.4 mm to 0.6 mm.
[0294] As shown in FIG. 42, the flow-guiding structure 302 may also include a second water guide groove 303. The second water guide groove 303 is positioned on one side of the first connecting corner 3 along its thickness direction. The water-collection groove 301 communicates with the second water guide groove 303 through the water-guiding opening 3011. This flow-guiding structure 302 is easy to manufacture, cost-effective, and convenient to assemble and maintain.
[0295] Specifically, as shown in FIG. 43, the second water guide groove 303 may be positioned on the first side of the first outer corner 32 along its thickness direction. The water-guiding opening 3011 of the water-collection groove 301 is located near the second water guide groove 303. This structure is simple and easy to manufacture without increasing material costs.
[0296] In the optical touch frame, the first outer corner 32 can independently perform the functions of collecting and directing water. The first connecting corner 3 can redirect water droplets out of the frame via the first outer corner 32, preventing water from seeping into the accommodating space of the first frame section 11. As shown in FIG. 44 and FIG. 45, when water droplets (d) enter through the splicing gap between the first frame section 11 and the first outer corner 32, they are intercepted by the water-collection groove 301 and collected within it. The water flows through the water-guiding opening 3011 into the second water guide groove 303 and is directed out of the first frame section 11. This effectively prevents water from entering the accommodating space of the first frame section 11 and corroding the touch circuit board 2.
[0297] In the first outer corner 32, the bottom surface of the water-collection groove 301 can be inclined, with the side near the water-guiding opening 3011 being lower and the side farther from it being higher. This inclination facilitates the drainage of water from the water-collection groove 301.
[0298] The bottom surface of the water-collection groove 301 can also be designed as flat or curved, without limitation. For example, if the bottom surface is flat, its inclination angle can range from 0 to 5 degrees or other values as required.
[0299] The structure and shape of the second water guide groove 303 are not restricted and can vary according to actual needs. For example, as shown in FIG. 43, the second water guide groove 303 on the first outer corner 32 can be positioned on the connecting section and fixed to the first outer corner 32 using screws.
[0300] In the present disclosure, the optical touch frame is designed to encase the display module. The first side of the first inner corner 31, the first outer corner 32, and the first connecting corner 3 along their thickness direction can all align with the non-display side of the display module. This allows the flow-guiding structure 302 to direct water from the water-collection groove 301 to the back of the display device, ensuring that the normal display of the device is not affected.
[0301] In the present disclosure, as shown in FIG. 36, the accommodating space of the first frame section 11 may include a circuit board cavity E and a functional cavity F. The functional cavity F communicates with the first port, and the circuit board cavity E may be located on the side of the functional cavity F away from the first side face. The circuit board cavity E is used to house the touch circuit board, and the end face of the first frame section 11 has a second port that communicates with the circuit board cavity E. The second port is located on the side of the first port away from the first side face.
[0302] In the above optical touch frame, the water-collection groove 301 on the first connecting corner 3 may extend into the functional cavity F. When external water droplets, under the influence of gravity, enter the first frame section 11 through the splicing gap, they first reach the first port communicating with the functional cavity F. At this point, the water droplets are blocked by the water-collection groove 301 extending into the functional cavity F and collected in the groove. The water is then directed out of the first frame section 11 through the flow-guiding structure 302, preventing it from dripping into the circuit board cavity E through the second port. This effectively avoids corrosion of the touch circuit board housed in the circuit board cavity E.
[0303] The functional cavity F can also accommodate additional functional components, such as cameras, without limitation, depending on actual requirements. The first frame section 11 may have an integrated structure, as shown in FIG. 36, or a modular design, with no restrictions depending on actual needs.
[0304] For example, the first frame section 11 may include stacked first and second sub-frames. The first sub-frame includes the functional cavity F and the first port, while the second sub-frame includes the circuit board cavity E and the second port. The first sub-frame and the second sub-frame may be fixedly connected by adhesion, snap-fit, or other methods without limitation.
[0305] In the present disclosure, as shown in FIG. 35, the first frame section 11 may have opposing first and second side faces. The second end of the first connecting corner 3 bends from the first end toward the second direction, which may be the direction from the first side face toward the second side face. The first end of the first connecting corner 3 is spliced with the end of the first frame section 11, while its second end bends toward the second direction to connect with other frame sections.
[0306] In the present disclosure, as shown in FIG. 46 and FIG. 47, the optical touch frame may further include a second frame section 12. The first end of the second frame section 12 is spliced with the second end of the first connecting corner 3. The second frame section 12 has a circuit board cavity to house the touch circuit board, with its end face featuring a third port that communicates with the circuit board cavity.
[0307] Specifically, the second frame section 12 may connect with the first frame section 11 through the first connecting corner 3. When the first connecting corner 3 includes a first inner corner 31 and a first outer corner 32, the second end of the first inner corner 31 may be fixed to the second frame section 12. The first outer corner 32 is positioned outside the first inner corner 31, and the second end of the first outer corner 32 may splice with the second frame section 12.
[0308] The second frame section 12 may serve as the first or second side frame section connected to the top frame section.
[0309] In the present disclosure, as shown in FIG. 46 and FIG. 47, the optical touch frame may also include a corner sealing plug 5. The corner sealing plug 5 is located inside the first connecting corner 3, with its first end abutting the end face of the first frame section 11 and aligning with the second port. Its second end abuts the end face of the second frame section 12 and aligns with the third port.
[0310] In the above optical touch frame, the two ends of the corner sealing plug 5 may provide sealing for the ports connecting the circuit board cavities of the first frame section 11 and the second frame section 12, preventing water droplets from entering the circuit board cavity E through the splicing gap. This further enhances the waterproof performance of the optical touch frame.
[0311] Specifically, the ends of the corner sealing plug 5 may fit tightly with the ends of the frame sections 1 through an interference fit. The gap between the corner sealing plug 5 and the ends of the frame sections may range from 0 to -0.5 mm, ensuring a reliable seal and effective waterproofing.
[0312] In the present disclosure, as shown in FIG. 46 to FIG. 48, the optical touch frame may also include two touch circuit boards 2 and a connection wire 4. The two touch circuit boards 2 are housed in the circuit board cavities E of the first frame section 11 and the second frame section 12, respectively. The ends of the touch circuit boards 2 are connected by the connection wire 4, ensuring the electrical performance of the optical touch frame. The corner sealing plug 5 includes a communication cavity that connects to the circuit board cavity E, allowing the connection wire 4 to route through the communication cavity.
[0313] In the above optical touch frame, the corner sealing plug 5 prevents water droplets from entering the circuit board cavity E and corroding the touch circuit board 2. Additionally, it protects the connection wire 4 between the two touch circuit boards 2, facilitating wiring while maintaining a simple structure for easy assembly.
[0314] Specifically, the connection wire 4 may be an FFC ribbon cable, with the ends of the touch circuit board 2 featuring connection ports to which the ribbon cable can be connected. The thickness of the FFC ribbon cable may range from approximately 0.15 mm to 0.5 mm. To facilitate routing through the communication cavity of the corner sealing plug 5, the width of the cavity port may be 1.5 mm or greater.
[0315] Specifically, as shown in FIG. 46, when the first connecting corner 3 includes a first inner corner 31 and a first outer corner 32, the corner sealing plug 5 may be positioned inside the first outer corner 32 and aligned with the first inner corner 31 along the thickness direction of the first connecting corner 3. This ensures reasonable assembly and optimizes the aesthetics of the optical touch frame.
[0316] In the present disclosure, the Shore hardness of the corner sealing plug 5 may range from 40 to 80, providing elasticity to ensure a reliable interference fit between its ends and the frame sections 1. The material of the corner sealing plug 5 may be silicone or other materials, without limitation.
[0317] In the present disclosure, as shown in FIG. 48 and FIG. 49, the end of the corner sealing plug 5 opposite the port connecting to the circuit board cavity E may feature a guiding structure 51. The guiding structure 51 facilitates the insertion of the corner sealing plug 5 into the circuit board cavity E and ensures a tight fit and effective sealing with the frame section 1.
[0318] Specifically, the guiding structure 51 may align closely with the side walls of the circuit board cavity E on both sides of the first connecting corner 3 in the thickness direction, ensuring a tight fit and effective sealing.
[0319] In the present disclosure, as shown in FIG. 47 to FIG. 49, the end of the corner sealing plug 5 opposite the port connecting to the circuit board cavity E may feature a limiting structure 52. The end of the touch circuit board 2 extends out of the circuit board cavity E and abuts the limiting structure 52, ensuring the fixed positioning of the touch circuit board 2.
[0320] In this embodiment, as shown in FIG. 34 and FIG. 35, the overall structure of the optical touch frame includes four frame sections 1 and four connecting corners 3. The four frame sections 1 include opposing first and third frame sections (bottom frame sections) and two opposing second frame sections (side frame sections) . Each frame section 1 includes a circuit board cavity, and the four frame sections 1 are spliced together with four connecting corners 3 to form a rectangular frame. Additionally, four touch circuit boards 2 are housed in the circuit board cavities E of the four frame sections 1 and connected sequentially by three connection wires 4. Each connecting corner 3 includes an L-shaped corner sealing plug 5, which provides wiring for the connection wires 4 while sealing the ports of the frame sections, improving the waterproof performance of the optical touch frame.
[0321] The present disclosure also provides a display device, which includes any optical touch frame provided by the above technical solutions.
[0322] Specifically, the display device may be an infrared touch screen, which also includes a display module and a main control circuit board. The optical touch frame can be wrapped around the display module. The display module may be a liquid crystal display module or an organic electroluminescent display module. The main control circuit board is signal-connected to the touch circuit boards in the optical touch frame and to the display module. The main control circuit board controls the display of the display module based on the signals transmitted or received by the touch circuit boards.
[0323] Specifically, the optical touch frame may include four frame sections 1, which consist of an opposing first frame section 11 (top frame section) and third frame section 13 (bottom frame section) , as well as two opposing second frame sections 12 (first side frame section and second side frame section) . The touch circuit boards 2 in the first frame section 11 and third frame section 13 are equipped with infrared transmitting units and infrared receiving units, respectively. The touch circuit boards in the two second frame sections 12 are equipped with both infrared transmitting units and infrared receiving units. The optical touch frame enables touch recognition functionality through the interaction between the infrared transmitting units and the infrared receiving units. The main control circuit board uses the touch recognition signals to control the display of the display module.
[0324] The infrared transmitting unit may include multiple infrared emitters arranged along the extension direction of the frame section 1, while the infrared receiving unit may include multiple infrared receivers positioned opposite the infrared emitters.
[0325] In another aspect, the present disclosure provides an embodiment of an optical touch frame and a display device. It addresses the issue in prior art where moisture entering the frame body interior easily corrodes optical touch components. The technical solution is as follows:
[0326] On one hand, an optical touch frame is provided, comprising:
[0327] A frame body and an optical touch component.
[0328] The frame body extends in a second direction and includes: a plate section and an enclosing section arranged oppositely in a third direction. The plate section and the enclosing section form an accommodating space between them. The second direction intersects with the third direction.
[0329] The accommodating space includes a first assembly groove and a water guide groove. The first assembly groove is used for installing the optical touch component, and both the first assembly groove and the water guide groove extend in the second direction.
[0330] Optionally, the first assembly groove includes:
[0331] A first elongated slot and a second elongated slot arranged in the third direction. The opposite sides of the optical touch component in the third direction are clamped into the first and second elongated slots.
[0332] The water guide groove and the first elongated slot are located on the side of the plate section facing the enclosing section, while the second elongated slot is on the side of the enclosing section facing the plate section.
[0333] Optionally, the water guide groove does not communicate with the first elongated slot.
[0334] Optionally, the optical touch frame further includes a light-filtering strip fixed to the frame body. The first elongated slot is closer to the light-filtering strip in the first direction than the water guide groove. The first direction intersects both the second and third directions.
[0335] Optionally, the frame body further includes:
[0336] First and second ribs arranged in the first direction. Both ribs are fixed to the side of the plate section facing the enclosing section. The first and second ribs enclose the first elongated slot, with the second rib positioned closer to the light-filtering strip than the first rib in the first direction.
[0337] The water guide groove is on the side of the first rib opposite the second rib.
[0338] Optionally, the water guide groove communicates with the first elongated slot.
[0339] Optionally, the optical touch frame includes multiple water guide grooves , such as a first water guide groove and a second water guide groove.
[0340] The first water guide groove does not communicate with the first elongated slot and is farther from the light-filtering strip in the first direction compared to the first elongated slot. The second water guide groove communicates with the first elongated slot, either closer to or farther from the light-filtering strip in the first direction.
[0341] Optionally, the surface of the water guide groove is arc-shaped.
[0342] On the other hand, a display device is provided, comprising:
[0343] A third optical touch frame and a display panel. The third optical touch frame corresponds to any of the aforementioned optical touch frames and is connected to the left or right side of the display panel.
[0344] Optionally, the display device further includes a second optical touch frame connected to the top side of the display panel. The second optical touch frame extends parallel to the first direction, with its end connected to the end of the third optical touch frame.
[0345] The accommodating space of the third optical touch frame includes a first assembly groove, comprising a first elongated slot and a second elongated slot arranged in the third direction.
[0346] The second optical touch frame has a first sliding slot communicating with the first elongated slot.
[0347] Optionally, the second optical touch frame includes:
[0348] A main frame portion and a connecting plate connected to the end of the main frame portion. The connecting plate splices with the end of the third optical touch frame in the second direction.
[0349] The display device further includes a first corner block. At least part of the first corner block is positioned on the connecting plate, connecting the ends of the first and second optical touch frames.
[0350] The connecting plate has a first sliding slot on the side facing the first corner block.
[0351] Optionally, the first corner block includes:
[0352] A corner block on the connecting plate, a first adapter section connected to the corner block, and a second adapter section.
[0353] The first adapter section extends into the frame body of the third optical touch frame for secure connection. The second adapter section extends into the main frame portion of the second optical touch frame for secure connection.
[0354] There is a first gap between the corner block and the frame body and a second gap between the corner block and the connecting plate.
[0355] Optionally, within the third optical touch frame, the end of the optical touch component protrudes from the frame body. In the third direction, there is a gap between the protruding portion of the optical touch component and the connecting plate.
[0356] Advantages of the Technical Solution:
[0357] The optical touch component is installed in the first assembly groove of the frame body. The frame body also includes a water guide groove . Since both the water guide groove and the first assembly groove extend in the second direction, water entering the frame body and flowing around the first assembly groove can flow into the water guide groove . This prevents water from flowing into the first assembly groove and corroding the optical touch component. Thus, it reduces the likelihood of moisture damage and enhances the reliability of the display device equipped with the optical touch component.
[0358] The present disclosure provides an embodiment of an optical touch frame and a display device. The optical touch frame is used to be installed in a display device, enabling the display device to have touch functionality.
[0359] Here, please refer to FIG. 50. FIG. 50 is a front view of the display surface of a display device provided in this embodiment. The display device may include a display panel 100. The display panel 100 in the display device may have a display region A1 and a non-display region A2 surrounding the display region A1. The display region A1 of the display panel 100 can be used to display images, and the optical touch frame in the display device can be connected to the non-display region A2 of the display panel 100.
[0360] It should be noted that the display device may include: a first optical touch frame 701, a second optical touch frame 702, and two third optical touch frames 703. The first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 may surround the display panel 100 and be distributed to connect with the non-display region A2 of the display panel 100. Here, the extension directions of the first optical touch frame 701 and second optical touch frame 702 may be parallel to the first direction X and oppositely arranged in the second direction Y, while the extension directions of the two third optical touch frames 703 may be parallel to the second direction Y and distributed on either side of the first optical touch frame 701 in the first direction X. Here, both the first direction X and the second direction Y are parallel to the display surface of the display panel 100, and the first direction X may intersect the second direction Y, for example, at a right angle.
[0361] During the use of the display device, the first optical touch frame 701 in the display device is connected to the side of the display panel 100 closer to the ground, meaning that the first optical touch frame 701 is connected to the bottom side of the display panel 100. Consequently, the second optical touch frame 702 may be connected to the top side of the display panel 100, and the two third optical touch frames 703 may be connected to the left and right sides of the display panel 100, respectively.
[0362] Additionally, the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 in the display device may each include: a frame body and an optical touch component. The optical touch component may be installed inside the frame body. Here, as shown in FIG. 51, FIG. 51 is a structural diagram of a display device provided in this embodiment. The frame body in the third optical touch frame 703 may be the frame body 200, and the optical touch component in the third optical touch frame 703 may be the optical touch component 301.
[0363] The frame bodies in the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 may be used to support the display panel 100, thereby achieving the assembly of the display device. The optical touch components in the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 may be used to enable the touch functionality of the display device.
[0364] For example, the optical touch components in the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 may each include infrared emission elements and infrared reception elements. Under the combined action of the infrared emission elements and infrared reception elements, the infrared emission elements in the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 can form an infrared detection grid over the display surface of the display panel 100. When a user touches the display surface of the display panel 100, the object performing the touch operation (e.g., a finger) may alter the infrared rays at the touch point, enabling the display device to detect the touch position through the optical touch components, thus achieving a response to the corresponding operation and enabling the touch functionality of the display device.
[0365] It should be noted that the frame bodies in the first optical touch frame 701, second optical touch frame 702, and two third optical touch frames 703 are connected together through splicing. Thus, after the display device is fully assembled, there are seams on the surface of the display device. Consequently, when water droplets are present on the surface of the display device, they may flow through the seams into the interior of the frame body. After water enters the interior of the frame body 200 in the third optical touch frame 703, the water droplets inside the frame body 200 may flow onto the optical touch component 301 located inside the frame body 200, potentially corroding the optical touch component 301, reducing its reliability, and thereby reducing the overall reliability of the display device.
[0366] To prevent the optical touch component 301 in the third optical touch frame 703 from being corroded by moisture, this embodiment provides an optical touch frame, which may be the third optical touch frame in the display device. In the following embodiments, the optical touch frame is always referred to as the third optical touch frame in the display device.
[0367] As shown in FIG. 51 and FIG. 52, where FIG. 52 is a partial enlarged view of the optical touch frame provided in the present disclosure embodiment, the optical touch frame may include: a frame body 200 and an optical touch component 301. Since the extension direction of the optical touch frame is parallel to the second direction Y, the extension direction of the frame body 200 in the optical touch frame may also be parallel to the second direction Y.
[0368] The frame body 200 in the optical touch frame may include: a plate section 201 and an enclosing section 202 arranged oppositely in the third direction Z. A containing space D may exist between the plate section 201 and the enclosing section 202 of the frame body 200. Here, the third direction Z may intersect the second direction Y, for example, at a right angle. Notably, after this optical touch component 300 is installed in a display device, the third direction Z may represent the direction perpendicular to the display surface of the display panel 100 in the display device, while the second direction Y may be parallel to the display surface.
[0369] The containing space D in the frame body 200 may include a first assembly groove K, which is used for mounting the optical touch component 301. In prior art, when water enters the containing space D of the frame body 200, the water droplets entering the frame body 200 may flow into the first assembly groove K and subsequently reach the optical touch component 301, potentially causing damage due to moisture corrosion, resulting in reduced reliability of the optical touch component 301.
[0370] In the present disclosure, as shown in FIG. 52 and FIG. 53 (where FIG. 53 is a schematic structural view of an optical touch frame without the optical touch component provided in this embodiment) , the containing space D of the frame body 200 may also include a drainage groove H. The extension directions of both the first assembly groove K and the drainage groove H in the frame body 200 may be parallel to the second direction Y. This design allows water droplets entering the interior of the frame body 200 and flowing around the first assembly groove K to flow into the drainage groove H, thus preventing the water droplets from entering the first assembly groove K and corroding the optical touch component 301. This reduces the likelihood of moisture corrosion to the optical touch component 301 and enhances the reliability of the display device equipped with this optical touch component 301.
[0371] In summary, the present disclosure provides an embodiment of an optical touch frame that includes: a frame body and an optical touch component, where the optical touch component is installed in the first assembly groove of the frame body. The frame body also includes a drainage groove, with the extension directions of the drainage groove and the first assembly groove both being parallel to the second direction. This arrangement ensures that water droplets entering the frame body and flowing around the first assembly groove are directed into the drainage groove, preventing them from entering the first assembly groove and corroding the optical touch component. This significantly reduces the likelihood of water corrosion to the optical touch component and improves the reliability of the display device equipped with this optical touch component.
[0372] Optionally, as shown in FIG. 53 and FIG. 54 (where FIG. 54 is a partial sectional view of the optical touch frame provided in the present disclosure embodiment) , the first assembly groove K of the frame body 200 may include: a first elongated slot K1 and a second elongated slot K2 arranged in the third direction Z. The two opposite sides of the optical touch component 301 in the third direction Z may be clamped into the first elongated slot K1 and the second elongated slot K2, respectively, enabling the installation of the optical touch component 301 within the frame body 200.
[0373] Here, both the drainage groove H and the first elongated slot K1 may be located on the surface of the plate section 201 facing the enclosing section 202, while the second elongated slot K2 may be located on the surface of the enclosing section 202 facing the plate section 201.
[0374] It should be noted that when the optical touch component is installed in the display device, connecting the optical touch component to the left or right side of the display panel of the display device, in the third direction Z, the plate section 201 of the frame body 200 in the optical touch frame faces the display surface of the display panel in the display device. During operation, the front side of the display device (the side facing the user) may correspond to the plate section 201 in the third direction Z.
[0375] During the use of the display device, water droplets are more likely to accumulate on the front side of the display device, as users often clean the front side with a wet cloth. Consequently, more water droplets may enter the interior of the frame body 200 from the seams on the front side of the display device. Among the two elongated slots in the first assembly groove K, the first elongated slot K1, located on the surface of the plate section 201 facing the enclosing section 202, is more prone to water intrusion.
[0376] To address this, the drainage groove H and the first elongated slot K1 are both arranged on the surface of the plate section 201 facing the enclosing section 202. This design allows water droplets flowing around the first elongated slot K1 to be directed into the drainage groove H, preventing the droplets from entering the first elongated slot K1 and corroding the optical touch component 301, thereby reducing the likelihood of water corrosion and improving the reliability of the display device.
[0377] Furthermore, after the display device is installed, in an ideal installation scenario, the second direction Y can be parallel to the direction of gravity. Even if the display device is not installed horizontally, water droplets entering the interior of the frame body 200 through the second gap P2 will flow toward the end of the frame body 200 under the influence of gravity. The water droplets will then flow along the second water flow path B2 into the first elongated slot K1, thereby corroding the optical touch component 301.
[0378] In the present disclosure, water droplets entering the interior of the frame body 200 through the first gap P1 will flow along the first flow path B1 into the first assembly groove K, while droplets entering through the second gap P2 will flow along the second water flow path B2 into the first assembly groove K. Therefore, the distribution position of the drainage groove H in the frame body 200 can have three optional implementations.
[0379] In the present disclosure, as shown in FIG. 54 and FIG. 57 (FIG. 57 is a partial enlarged view of another optical touch frame embodiment provided in the present disclosure) , the optical touch frame can also include a filter strip 302 fixed to the frame body 200. Infrared light emitted by the optical touch component 301 in the optical touch frame passes through the filter strip 302 and is emitted, forming an infrared detection grid on the display panel.
[0380] In the first optional implementation, to block water droplets entering the interior of the frame body 200 through the first gap P1 from flowing along the first flow path B1 into the first assembly groove K, the drainage groove H can be set not to communicate with the first elongated slot K1. Furthermore, the first elongated slot K1 can be closer to the filter strip 302 in the first direction X than the drainage groove H. Thus, water droplets entering the frame body 200 through the first gap P1 and flowing in the first direction X toward the filter strip 302 will directly flow into the drainage groove H. This prevents water droplets from flowing into the first elongated slot K1.
[0381] Optionally, as shown in FIG. 57 and FIG. 58 (FIG. 58 is a partial sectional view of another optical touch frame embodiment provided in the present disclosure) , the frame body 200 can also include a first rib 2011 and a second rib 2012 arranged in the first direction X. Both ribs 2011 and 2012 are fixed to the side of the plate section 201 facing the enclosing section 202. The first elongated slot K1 can be positioned between the first rib 2011 and the second rib 2012, with the second rib 2012 being closer to the filter strip 302 in the first direction X. The drainage groove H can be located on the side of the first rib 2011 opposite the second rib 2012, thus ensuring that the first elongated slot K1 is closer to the filter strip 302 than the drainage groove H in the first direction X.
[0382] It should be noted that in the prior art, the frame body 200 does not include a drainage groove H. In such cases, if the display device is not installed horizontally, water droplets entering through the first gap P1 will flow in both the second direction Y and the first direction X due to gravity, potentially crossing the first rib 2011 to enter the first elongated slot K1. In the present disclosure, the drainage groove H is added to the side of the first rib 2011 opposite the second rib 2012. This ensures that water droplets entering through the first gap P1 and flowing in the first direction X toward the first rib 2011 will flow directly into the drainage groove H, preventing them from crossing the first rib 2011 and entering the first elongated slot K1.
[0383] In the second optional implementation, to block water droplets entering the interior of the frame body 200 through the second gap P2 from flowing along the first flow path B1 into the first assembly groove K, as shown in FIG. 54 and FIG. 59 (FIG. 59 is another partial sectional view of an optical touch frame embodiment provided in the present disclosure) , the drainage groove H can be set to communicate with the first elongated slot K1.
[0384] It should be noted that in the prior art, as shown in FIG. 60 (apartial sectional view of an optical touch frame in the prior art) , water droplets entering the interior of the frame body 200 through the second gap P2 flow to the end face of the frame body 200 toward the second optical touch component 702. From there, the droplets may flow into the first elongated slot K1 and spread to the optical touch component 301, corroding it.
[0385] In the present disclosure, as shown in FIG. 59, water droplets entering through the second gap P2 and flowing to the end face of the frame body 200 toward the second optical touch component 702 will instead flow into the drainage groove H, preventing them from spreading to the optical touch component 301. Thus, the drainage groove H effectively blocks water droplets from flowing into the first elongated slot K1.
[0386] Optionally, as shown in FIG. 59, the drainage groove H can include a first sub-groove H1 and / or a second sub-groove H2. The first sub-groove H1 can communicate with the side of the first elongated slot K1 farther from the filter strip 302 in the first direction X, while the second sub-groove H2 can communicate with the side of the first elongated slot K1 closer to the filter strip 302 in the first direction X.
[0387] When the drainage groove H communicates with the first elongated slot K1, three configurations are possible:
[0388] First Configuration: The drainage groove H includes only the first sub-groove H1, positioned farther from the filter strip 302 than the first elongated slot K1 in the first direction X. Water droplets entering through the second gap P2 will flow into the first sub-groove H1.
[0389] Second Configuration: The drainage groove H includes only the second sub-groove H2, positioned closer to the filter strip 302 than the first elongated slot K1 in the first direction X. Water droplets entering through the second gap P2 will flow into the second sub-groove H2.
[0390] Third Configuration: The drainage groove H includes both the first sub-groove H1 and the second sub-groove H2, distributed on either side of the first elongated slot K1 in the first direction X. Water droplets entering through the second gap P2 will flow into both sub-grooves.
[0391] Optionally, as shown in FIG. 59, the frame body 200 can also include a first rib 2011 and a second rib 2012, with the first elongated slot K1 positioned between them. The first rib 2011 can include the first sub-groove H1, and / or the second rib 2012 can include the second sub-groove H2, ensuring effective drainage and preventing water from reaching the optical touch component 301.
[0392] In the third optional implementation, the interior of the frame body 200 can include multiple drainage grooves, which may comprise a first drainage groove and a second drainage groove. Here, the first drainage groove can correspond to the drainage groove in the first optional implementation, and the second drainage groove can correspond to the drainage groove in the second optional implementation. The structures of the first and second drainage grooves are not elaborated here. In this third optional implementation, water droplets entering the interior of the frame body 200 through the first seam P1 and the second seam P2 will not flow onto the optical touch component 301.
[0393] In the present disclosure, as shown in FIG. 58 and FIG. 59, the groove surface of the drainage groove H in the frame body 200 can be an arc-shaped surface. In this way, water droplets flowing into the drainage groove H can lose surface tension due to the arc-shaped groove surface, forming a thin layer of water that flows along the drainage groove H. This ensures that the water in the drainage groove H does not flow directionlessly onto the optical touch component 301, further reducing the likelihood of water-induced corrosion of the optical touch component 301.
[0394] In the present disclosure, refer to FIG. 61. FIG. 61 is a partial sectional view of another optical touch frame embodiment provided by the present disclosure. The frame body 200 can include a connecting piece 203 for securing the filter strip 302. In the third direction Z, the connecting piece 203 in the frame body 200 can include a first connecting section 2031 and a second connecting section 2032 arranged oppositely. The first connecting section 2031 can be fixedly connected to the side of the plate body 201 facing the enclosing section 202, and the second connecting section 2032 can be fixedly connected to the side of the enclosing section 202 facing the plate body 201. The two sides of the filter strip 302 in the third direction Z can be fixedly connected to the first connecting section 2031 and the second connecting section 2032, respectively.
[0395] Here, a gap exists between the first connecting section 2031 and the second connecting section 2032 that communicates with the accommodating space D. The filter strip 302 located within this gap ensures that all infrared rays emitted by the optical touch component 301 within the accommodating space D pass through the filter strip 302 before being emitted.
[0396] In summary, the present disclosure provides an optical touch frame that includes a frame body and an optical touch component. The optical touch component is installed in a first assembly groove within the frame body. The frame body also includes a drainage groove whose extension direction is parallel to that of the first assembly groove. This design ensures that water droplets entering the interior of the frame body and flowing near the first assembly groove will flow into the drainage groove, preventing water droplets from reaching and corroding the optical touch component in the first assembly groove. Consequently, the optical touch component's vulnerability to water damage is reduced, improving the reliability of the display device that incorporates this optical touch component.
[0397] The present disclosure also provides a display device, as shown in FIG. 51. The display device can include a third optical touch frame 703 and a display panel 100. The third optical touch frame in the display device corresponds to the optical touch frame described in the embodiments above. The third optical touch frame in the display device can be connected to the left or right side of the display panel 100.
[0398] Optionally, as shown in FIG. 51, the display device can also include a second optical touch frame 702. The second optical touch frame 702 is connected to the top side of the display panel 100, with its end connected to the end of the third optical touch frame 703. The first assembly groove K inside the accommodating space D of the third optical touch frame 703 includes a first elongated slot K1 and a second elongated slot K2 arranged in the third direction Z.
[0399] As shown in FIG. 62 and FIG. 63, FIG. 62 is a partial enlarged view of another display device embodiment provided in the present disclosure, and FIG. 63 is a top-down view of a display device provided by the present disclosure. Inside the frame body 200, the second optical touch component 702 can include a first sliding slot K3 that communicates with the first elongated slot K1. Here, the connection plate 2021 in the second optical touch component 702, which connects to the end of the frame body 200, includes the first sliding slot K3.
[0400] In the first direction X, the width of the first sliding slot K3 can be greater than the width of the optical touch component 301, allowing the optical touch component 301 to be positioned inside the first sliding slot K3 in the first direction X. During the display device's operation, if the optical touch component 301 is damaged, maintenance personnel can remove the first corner block 400 and extract the optical touch component 301 from the first elongated slot K1 via the first sliding slot K3. Similarly, once the optical touch component 301 is functional, maintenance personnel can slide it back into the first elongated slot K1 via the first sliding slot K3. This design facilitates the installation and removal of the optical touch component 301.
[0401] In the present disclosure, as shown in FIG. 62 and FIG. 63, the end of the optical touch component 301 can protrude from the frame body 200. In the third direction Z, a gap can exist between the part of the optical touch component 301 that protrudes from the frame body 200 and the connection plate 7022. As water droplets entering the interior of the frame body 200 through the second gap P2 flow along the inner surface of the connection plate 7022 toward the frame body 200, the gap ensures that water on the inner surface of the connection plate 7022 does not contact the optical touch component 301. Thus, the water does not spread onto the optical touch component 301 but instead flows toward the end face of the frame body 200 that faces the connection plate 7022. From there, it flows into the drainage groove H.
[0402] It should be noted, refer to FIG. 64. FIG. 64 is a structural diagram of another display device embodiment provided by the present disclosure. A portion of the first optical touch frame 701 for connecting to the frame body 200 can include a second sliding slot K4. This second sliding slot K4 can communicate with the first elongated slot K1, facilitating the installation and removal of the optical touch component 301. Furthermore, the second sliding slot K4 can communicate with the drainage groove H and extend through the first optical touch frame 701 in the second direction Y. Water flowing into the drainage groove H can then flow into the second sliding slot K4 under the influence of gravity, ultimately exiting the first optical touch frame 701 and the display device.
[0403] Optionally, refer to FIG. 65. FIG. 65 is a partial exploded view of another display device embodiment provided by the present disclosure. The first corner block 400 in the frame body 200 can include a corner block 401 located on the connection plate 2021 in the second frame body 202 and a first adapter section 402 and a second adapter section 403 fixedly connected to the corner block 401. The first adapter section 402 of the first corner block 400 can extend into the interior of the frame body 200 of the third optical touch frame 703 to connect to the frame body 200. The second adapter section 403 can extend into the main frame portion 7021 of the second optical touch frame 702 to connect to the main frame portion 7021. A first gap P1 can exist between the corner block 401 and the frame body 200, and a second gap P2 can exist between the corner block 401 and the connection plate 7022.
[0404] It should be noted that the connection between the frame body 200 of the third optical touch frame and the first optical touch frame 701 can also use a second corner block with the same structure as the first corner block 400, which is not elaborated here.
[0405] In another aspect, the present disclosure embodiment provides an optical touch frame and a display device, which can solve the problem in the prior art where moisture entering the interior of the frame is likely to corrode the optical touch components. The technical solution is as follows:
[0406] An optical touch frame is provided, including a frame body and optical touch components. The extension direction of the frame body is parallel to the first direction. The frame body includes a plate section and an enclosing section that are oppositely arranged along the third direction, with a receiving space between the plate section and the enclosing section. The first direction intersects with the third direction. The optical touch components are installed within the receiving space. The surface of the plate section facing the enclosing section, and / or the surface of the enclosing section away from the plate section, has a drainage structure.
[0407] Optionally, the extension direction of the projection of the drainage structure on the plate section intersects with the extension direction of the projection of the optical touch components on the plate section. The plate section facing the enclosing section may include the drainage structure, which comprises a first water guide groove. The projection of the optical touch components on the plate section does not overlap with the area of the first water guide groove. Furthermore, the extension direction of the projection of the optical touch components on the plate section may be perpendicular to the extension direction of the first water guide groove.
[0408] The optical touch frame may also include a light filter strip. The frame body may include a first connecting piece, which connects the plate section and the enclosing section along the third direction and is used to fix the light filter strip. The end face of the first connecting piece is flush with the groove surface of the first water guide groove facing the first connecting piece in the first direction. In the first direction, the end face of the first connecting piece and the end face of the light filter strip both protrude beyond the end face of the optical touch components. Alternatively, the end face of the light filter strip may either protrude beyond or be flush with the end face of the first connecting piece in the first direction.
[0409] The frame body may also include a second connecting piece fixed inside the receiving space, used to secure the optical touch components. The drainage structure may also include a second water guide groove, which communicates with the first water guide groove. In the first direction, the second water guide groove is positioned between the first water guide groove and the second connecting piece. In the first direction, the end of the optical touch components protrudes beyond the end face of the second connecting piece. The portion of the optical touch components that protrudes relative to the second connecting piece is projected onto the plate section within the area of the second water guide groove. The length of the second water guide groove along its extension direction may be shorter than the first water guide groove.
[0410] The optical touch frame may include a first absorbent section, with at least part of it located inside the first water guide groove. The first absorbent section may contact the end face of the light filter strip.
[0411] The plate section may include the drainage structure, which comprises a third water guide groove. The projection of the optical touch components on the plate section overlaps with the area of the third water guide groove.
[0412] The enclosing section, on its side away from the plate section, may have a water-blocking groove. In the first direction, the distance between the water-blocking groove and the enclosing section's end is less than the distance between the water-blocking groove and the enclosing section's middle position.
[0413] The enclosing section may include a first plate, a second plate, and a third plate connected sequentially. The second plate is oppositely arranged relative to the plate section in the third direction. The first plate and the third plate are oppositely arranged in the second direction, and the first plate is closer to the light filter strip than the third plate in the second direction. The surface of the first plate away from the third plate and the surface of the plate section away from the light filter strip are used to fix the light filter strip. The first groove is located on the surface of the first plate away from the third plate, and the second groove is located on the surface of the second plate away from the plate section.
[0414] The optical touch frame may include a second absorbent section, part of which is located inside the water-blocking groove. The second absorbent section may include a first part and a second part that are connected. At least part of the first part is located inside the water-blocking groove, and the second part contacts the surface of the light filter strip facing the enclosing section in the third direction. The depth of the water-blocking groove may be greater than or equal to the thickness of the first part.
[0415] The optical touch frame may include a light filter strip, where the light filter strip and the optical touch components are arranged in the second direction. The second direction intersects with the first direction and the third direction.
[0416] The present disclosure embodiment also provides a display device, including a first optical touch frame and a display panel. The first optical touch frame is any of the above-described optical touch frames. The first optical touch frame is fixedly connected to the bottom side of the display panel. Optionally, the display device includes a third optical touch frame, which connects to the left or right side of the display panel. The second optical touch frame extends parallel to the second direction, which intersects with the first direction and the third direction. In the first direction, there is a gap between the optical touch components in the third optical touch frame and the light filter strip in the first optical touch frame.
[0417] The technical solution provided by the present disclosure has at least the following beneficial effects: By arranging a drainage structure on the plate section and positioning this structure inside the frame body's receiving space, water entering the frame body can flow along the drainage structure, preventing it from reaching the optical touch components. Furthermore, by arranging a drainage structure on the enclosing section and positioning it outside the frame body's receiving space, water on the surface of the enclosing section away from the plate section can flow along the drainage structure, preventing it from entering the frame body and, subsequently, the optical touch components. This reduces the risk of water damage to the optical touch components, improving the reliability of the display device equipped with this optical touch frame.
[0418] The present disclosure embodiment provides an optical touch frame designed for installation in a display device, enabling the device to have touch functionality.
[0419] Refer to FIG. 66 and FIG. 67. FIG. 66 shows a front view of the display surface of a display device provided in the present disclosure embodiment, and FIG. 67 provides a schematic structural view of the display device. The display device may include a display panel 100, which features a display region A1 and a non-display region A2 surrounding the display region A1. The display region A1 is used to present images, while the optical touch frame in the display device is connected to the non-display region A2 of the display panel 100.
[0420] The display device may include a first optical touch frame 701, a second optical touch frame 702, and two third optical touch frames 703. These frames surround the display panel 100 and connect to the non-display region A2. The first optical touch frame 701 and the third optical touch frames 703 extend parallel to the first direction X and are oppositely arranged in the second direction Y. The two third optical touch frames 703 extend parallel to the second direction Y and are positioned on either side of the first optical touch frame 701 along the first direction X. Both the first direction X and the second direction Y are parallel to the display surface of the display panel 100, and they intersect, with an example being a perpendicular intersection.
[0421] During operation, the first optical touch frame 701 is connected to the side of the display panel 100 closest to the ground, meaning it is attached to the bottom side of the panel. Correspondingly, the second optical touch frame 702 is connected to the top side of the panel, and the two third optical touch frames 703 are connected to the left and right sides of the panel.
[0422] Additionally, the non-display region A2 of the display panel 100 may include a bonding region F, which contains bonding traces connecting the display elements within the display region A1 to external components such as driver chips. The driver chips operate the display elements, driving the display in region A1. These external components may be positioned on the side of the bonding region F opposite the display surface of the panel. In practice, the bonding region F is typically located on the side of the display region A1 nearest the ground, making the first optical touch frame 701 correspond to the bonding region F.
[0423] The first optical touch frame 701, second optical touch frame 702, and the two third optical touch frames 703 each include a frame body and optical touch components installed within the frame body. Refer to FIG. 67 and FIG. 68. FIG. 68 illustrates the rear structure of a display device including one of the third optical touch frames. In this depiction, the frame body in the first optical touch frame 701 is frame body 200, and the optical touch components are optical touch components 302. The frame bodies in the first, second, and third optical touch frames serve to support the display panel 100, facilitating the assembly of the display device. The optical touch components in these frames enable the touch functionality of the display device.
[0424] For instance, the optical touch components in all frames may include infrared emitters and receivers. Together, these components create an infrared detection grid on the display surface of the display panel 100. When a user touches the display surface, the object (e.g., a finger) disrupts the infrared pattern, allowing the optical touch components to detect the touch point and respond accordingly, thereby enabling touch functionality.
[0425] As shown in FIG. 67 and FIG. 68, the frame bodies of the first, second, and third optical touch frames are joined via splicing. The splice between the frame body 200 of the first optical touch frame 701 and the frame body of the third optical touch frame 703 creates a first seam P1, which is located on the front of the display device. The front is the side of the device visible to the user.
[0426] If water droplets accumulate on the front surface of the display device, they may enter the device through the first seam P1. Since the first optical touch frame 701 is located at the bottom of the display panel 100, gravity may cause the water to flow into the frame body 200 of the first optical touch frame 701, potentially damaging its optical touch components 302 and reducing their reliability. This degradation in the first optical touch frame 701 can subsequently reduce the overall reliability of the display device.
[0427] To prevent water damage to the optical touch components 302 in the first optical touch frame 701, the present disclosure provides an optical touch frame designed specifically to address this issue.
[0428] Refer to FIG. 68 and FIG. 69. FIG. 69 provides an enlarged view of part of the optical touch frame. The frame body 200 of the optical touch frame extends parallel to the first direction X. It includes a plate section 201 and an enclosing section 202 that are oppositely arranged along the third direction Z, with a receiving space D located between them. The first direction X intersects the third direction Z, which is perpendicular to the display surface of the display panel 100 in the display device. The second direction Y also intersects the third direction Z. The optical touch components 302 are installed within the receiving space D of the frame body 200.
[0429] As shown in FIG. 69 and FIG. 70, the plate section 201 of the frame body 200 on the side facing the enclosing section 202, and / or the enclosing section 202 on the side away from the plate section 201, may include a drainage structure 203. The drainage structure 203 on the plate section 201 is located within the receiving space D, enabling water entering the frame body 200 to flow along the drainage structure 203, preventing it from reaching the optical touch components 302. The drainage structure 203 on the enclosing section 202 is located outside the receiving space D, enabling water on the side of the enclosing section 202 away from the plate section 201 to flow along the structure, preventing it from entering the frame body 200 and reaching the optical touch components 302. This design reduces the risk of water damage to the optical touch components 302 and improves the reliability of the display device equipped with this optical touch frame.
[0430] In summary, the present disclosure embodiment provides an optical touch frame, including a frame body and optical touch components. The surface of the plate section in the frame body facing the enclosing section, and / or the surface of the enclosing section away from the plate section, may feature a drainage structure. The drainage structure on the plate section can be located inside the receiving space of the frame body, allowing water droplets entering the frame body to flow along the drainage structure and preventing them from reaching the optical touch components. The drainage structure on the enclosing section can be located outside the receiving space of the frame body, guiding water droplets on the surface of the enclosing section away from the plate section to flow along the structure, thereby preventing water from entering the frame body and reaching the optical touch components. This reduces the risk of water-induced damage to the optical touch components and improves the reliability of display devices equipped with this optical touch frame.
[0431] Optionally, the drainage structure in the frame body 200 may have a projection on the plate section 201 that extends in a direction intersecting with the projection of the optical touch components 302 on the plate section 201. Because the drainage structure 203 may extend parallel to the direction of gravity, water droplets can flow along the structure under the influence of gravity, reducing the likelihood of water droplets reaching the optical touch components 302. This design further minimizes the risk of water-induced damage to the optical touch components 302 and enhances the reliability of display devices equipped with this optical touch frame.
[0432] For example, as shown in FIG. 69 and FIG. 70, the projection of the drainage structure 203 on the plate section 201 may extend parallel to the second direction Y, while the projection of the optical touch components 302 on the plate section 201 may extend parallel to the first direction X. In this case, the extension direction of the drainage structure 203 intersects with that of the optical touch components 302.
[0433] When the plate section 201 of the frame body 200 is equipped with a drainage structure 203, refer to FIG. 71, which provides an enlarged view of another optical touch frame. The drainage structure 203 may include a first water guide groove K1. The projection of the optical touch components 302 on the plate section 201 does not overlap with the region of the first water guide groove K1, ensuring that water flowing within the first water guide groove K1 does not damage the optical touch components 302.
[0434] The first water guide groove K1 may have a certain width in the first direction X and a certain depth in the third direction Z, allowing its inner walls to confine water droplets to flow only within the groove, preventing them from reaching the optical touch components 302. For example, the depth of the first water guide groove K1 may be greater than or equal to 0.2 millimeters.
[0435] Optionally, the projection of the optical touch components 302 on the plate section 201 may extend in a direction perpendicular to that of the first water guide groove K1. This means that the extension direction of the optical touch components 302 in the first direction X is perpendicular to the extension direction of the first water guide groove K1 in the second direction Y.
[0436] Optionally, as shown in FIG. 67, FIG. 68, and FIG. 71, the optical touch frame may also include a light-filtering strip 301. The light emitted by the optical touch components 302 in the optical touch frame may pass through the light-filtering strip 301 to form an infrared detection grid on the display surface of the display panel 100.
[0437] The frame body 200 may also include a first connecting piece 2011, which connects the plate section 201 and the enclosing section 202 in the third direction Z and secures the light-filtering strip 301. With this design, the light-filtering strip 301 can be fixed to the frame body 200 via the first connecting piece 2011.
[0438] Optionally, as shown in FIG. 71, the first connecting piece 2011 may include a first connecting section 2011a fixed to the side of the plate section 201 facing the enclosing section 202, and a second connecting section 2011b fixed to the side of the enclosing section 202 facing the plate section 201. A first installation groove S1 is formed between the first connecting section 2011a and the second connecting section 2011b, in which the light-filtering strip 301 can be fixed. This design allows the light-filtering strip 301 to be securely attached to the first connecting piece 2011.
[0439] It should be noted, as shown in FIG. 67, that in the display device, the ends of the light-filtering strips in the two third optical touch frames 703 face the ends of the light-filtering strip in the first optical touch frame 701, leaving a second seam P2 between them. If water droplets are present on the surface of the display device, they may enter the interior of the frame body 200 in the first optical touch frame 701 through the seam between the light-filtering strips, potentially leading to water-induced damage to the optical touch components 302.
[0440] During operation, water droplets on the display surface of the display panel 100 may accumulate on the light-filtering strip 301 of the first optical touch frame 701 due to gravity. If the display device is not installed horizontally, some of these water droplets may flow along the light-filtering strip 301 to its end and enter through the second seam P2.
[0441] In existing technologies, as shown in FIG. 72, which illustrates water droplets flowing onto the optical touch components, the length of the light-filtering strip 301 is shorter than that of the optical touch components 302. As a result, in the first direction X, the end surface of the optical touch components 302 protrudes beyond that of the light-filtering strip 301. Consequently, water droplets flowing to the end of the light-filtering strip 301 may drip directly onto the optical touch components 302 under the influence of gravity, leading to water-induced damage.
[0442] In the present disclosure, as shown in FIG. 68 and FIG. 71, the end surfaces of the first connecting piece 2011 and the light-filtering strip 301 may protrude beyond the end surface of the optical touch components 302 in the first direction X. This ensures that water droplets dripping from the end of the light-filtering strip 301 do not fall onto the optical touch components 302, thereby reducing the likelihood of water-induced damage and improving the reliability of the display device.
[0443] Optionally, in the first direction X, the end surface of the light-filtering strip 301 may protrude beyond the end surface of the first connecting piece 2011. Alternatively, in the first direction X, the end surface of the light-filtering strip 301 may be flush with the end surface of the first connecting piece 2011. For example, the length by which the end surface of the light-filtering strip 301 protrudes beyond the end surface of the first connecting piece 2011 in the first direction X can range from 0 millimeters to 0.3 millimeters.
[0444] Here, when the end surface of the light-filtering strip 301 is flush with the end surface of the first connecting piece 2011 in the first direction X, water droplets flowing to the end surface of the light-filtering strip 301 will spread onto the end surface of the first connecting piece 2011 and then drip off under the influence of gravity. Because the end surface of the first connecting piece 2011 protrudes beyond the end surface of the optical touch component 302 in the first direction X, water droplets dripping off the end surface of the first connecting piece 2011 will not fall onto the optical touch component 302.
[0445] Conversely, when the end surface of the light-filtering strip 301 protrudes beyond the end surface of the first connecting piece 2011 in the first direction X, water droplets flowing to the end surface of the light-filtering strip 301 will drip directly. Similarly, because the end surface of the light-filtering strip 301 protrudes beyond the end surface of the optical touch component 302 in the first direction X, water droplets dripping off the end surface of the light-filtering strip 301 will not fall onto the optical touch component 302. Here, as the first connecting piece 2011 is connected to the interior of the frame body 200, water droplets flowing onto the end surface of the first connecting piece 2011 could potentially flow along the inner surface of the frame body 200 and reach the optical touch component 302. Therefore, when the end surface of the light-filtering strip 301 protrudes beyond the end surface of the first connecting piece 2011 in the first direction X, water droplets flowing to the end surface of the light-filtering strip 301 will drip directly and will not reach the first connecting piece 2011. This can further reduce the likelihood of moisture corrosion on the first infrared touch circuit board and improve the reliability of the display device.
[0446] For example, as shown in FIG. 73, which provides a partial enlarged bottom view of an optical touch frame in this embodiment, the length L1 by which the end surface of the first connecting piece 2011 protrudes beyond the end surface of the first infrared touch panel 302 in the first direction X can be greater than or equal to 0.5 millimeters. This ensures that water droplets dripping off the end surface of the first connecting piece 2011 will not fall onto the optical touch component 302.
[0447] Optionally, as shown in FIG. 71, the end surface of the first connecting piece 2011 in the frame body 200 can be flush with the groove surface of the first water guide groove K1 that faces the first connecting piece 2011 in the first direction X. In this way, when the end surface of the light-filtering strip 301 is flush with the end surface of the first connecting piece 2011 in the first direction X, the end surfaces of the light-filtering strip 301, the first connecting piece 2011, and the groove surface of the first water guide groove K1 that faces the first connecting piece 2011 can be aligned in the first direction X. This ensures that water droplets flowing to the end surface of the light-filtering strip 301 can flow along the groove surface of the first water guide groove K1 toward its interior, further reducing the likelihood of moisture corrosion on the optical touch component 302.
[0448] When the end surface of the light-filtering strip 301 protrudes beyond the end surface of the first connecting piece 2011 in the first direction X, the end surface of the light-filtering strip 301 can extend into the first water guide groove K1 in the first direction X, as the end surface of the first connecting piece 2011 is flush with the groove surface of the first water guide groove K1 that faces it. This allows water droplets flowing to the end surface of the light-filtering strip 301 to drip directly into the first water guide groove K1, further reducing the likelihood of moisture corrosion on the optical touch component 302.
[0449] In the present disclosure, as shown in FIG. 71, the first water guide groove K1 can extend through the frame body 200 in the second direction Y. That is, the side of the frame body 200 close to the ground can have an opening that communicates with the first water guide groove K1. This ensures that water droplets flowing into the first water guide groove K1 can flow directly out of the frame body 200 under the influence of gravity, preventing them from reaching the optical touch component 302.
[0450] In the present disclosure, as shown in FIG. 71 and FIG. 74, where FIG. 74 provides a partial enlarged view of an optical touch frame without an optical touch component, the frame body 200 can also include a second connecting piece 2012 fixed inside the receiving space D. The second connecting piece 2012 can be used to secure the optical touch component 302.
[0451] It should be noted that the second connecting piece 2012 can include a third connecting section fixed to the side of the plate section 201 facing the enclosing section 202 and a fourth connecting section fixed to the side of the enclosing section 202 facing the plate section 201. The two opposite sides of the optical touch component 302 in the third direction Z can be fixedly connected to the third and fourth connecting sections, respectively. The specific labels for the third and fourth connecting sections are not shown in FIG. 74 but are illustrated in FIG. 82 of subsequent embodiments. The second connecting piece 2012 can have a second installation groove S2 for installing the optical touch component 302. This groove can be located between the third and fourth connecting sections, allowing the optical touch component 302 to be fixed within the second installation groove S2 and thus secured to the second connecting piece 2012.
[0452] As shown in FIG. 72, in existing technology, water droplets entering the frame body 200 through the first seam P1 may flow along the inner surface of the frame body 200 and reach the end of the second installation groove S2 located on the plate section 201. Due to the display device not being installed horizontally, water droplets flowing to this end of the second installation groove S2 may further enter the groove and cause corrosion to the optical touch component 302.
[0453] In the present disclosure, as shown in FIG. 71 and FIG. 74, when the drainage structure 203 includes the first water guide grooveK1, the drainage structure 203 may also include a second water guide groove K2. The second water guide groove K2 in the drainage structure 203 can communicate with the first water guide groove K1. In the first direction X, the second water guide groove K2 can be located between the first water guide groove K1 and the second connecting piece 2012. Here, the second water guide groove K2 may also have a certain depth in the third direction Z and a specific width in the first direction X. For example, in the third direction Z, the depth of the second water guide groove K2 may be the same as that of the first water guide groove K1.
[0454] Optionally, in the first direction X, the end of the optical touch component 302 may protrude beyond the end surface of the second connecting piece 2012. The portion of the optical touch component 302 that protrudes beyond the second connecting piece 2012 in the first direction X may project into the area of the second water guide groove K2 on the plate section 201. That is, the second water guide groove K2 located between the first water guide groove K1 and the second connecting piece 2012 in the first direction X can partially disrupt the second connecting piece 2012, allowing water droplets flowing along the second water flow path B2 to flow into the second water guide groove K2. These droplets can be blocked by the groove surface of the second water guide groove K2 facing the second connecting piece 2012, preventing them from entering the second installation groove S2 and corroding the optical touch component 302.
[0455] Optionally, as shown in FIG. 74, the second connecting piece 2012 in the frame body 200 may include a first rib 2012a and a second rib 2012b arranged oppositely in the second direction Y. The first rib 2012a in the second connecting piece 2012 may be closer to the light-filtering strip 302 than the second rib 2012b. Between the first rib 2012a and the second rib 2012b lies part of the groove body of the second installation groove S2. Here, the first rib 2012a and the second rib 2012b can be fixed to the side of the plate section 201 facing the enclosing section 202. In other words, the third connecting section in the second connecting piece 2012 can include the first rib 2012a and the second rib 2012b, with the third connecting section forming part of the groove body of the second installation groove S2.
[0456] In the present disclosure, since the second water guide groove K2 is located on the side of the plate section 201 facing the enclosing section 202, the second water guide groove K2 is situated between the first water guide groove K1 and the third connecting section of the second connecting piece 2012, the second water guide groove K2 can cut through the first rib 2012a and the second rib 2012b, thereby disrupting the end of the third connecting section in the second connecting piece 2012. This ensures that water droplets flowing along the second water flow path B2 enter the second water guide groove K2 and do not reach the end of the groove body of the second installation groove S2 on the third connecting section. Consequently, the droplets do not flow along this groove body to corrode the optical touch component 302.
[0457] Optionally, as shown in FIG. 71 and FIG. 74, the length of the second water guide groove K2 in the extension direction of the first water guide groove K1 in the frame body 200 can be less than that of the first water guide groove K1. That is, the length of the second water guide groove K2 in the second direction Y may be less than that of the first water guide groove K1 in the same direction. Thus, when the first water guide groove K1 extends through the frame body 200 in the second direction Y, the second water guide groove K2 does not extend through the frame body 200 in the same direction. This configuration allows water droplets entering the second water guide groove K2 to first flow into the first water guide groove K1 and then exit the frame body 200 through the first water guide groove K1.
[0458] Optionally, refer to FIG. 75, which provides a partial enlarged view of another optical touch frame in the present disclosure. The optical touch frame may also include a first absorbent section 400, at least part of which can be located within the first water guide groove K1. This configuration allows the first absorbent section 400 to directly absorb water droplets flowing into the first water guide groove K1, further reducing the likelihood of moisture corrosion on the optical touch component 302.
[0459] It should be noted that in the third direction Z, the thickness of the first absorbent section 400 can be greater than the depth of the first water guide groove K1. To ensure that the first absorbent section 400 can absorb more moisture, its thickness can be greater than or equal to 4 millimeters.
[0460] Optionally, the first absorbent section 400 in the optical touch frame may be in contact with the end surface of the light-filtering strip 301. This allows water droplets flowing onto the end surface of the light-filtering strip 301 to be directly absorbed by the first absorbent section 400, preventing them from potentially flowing along the inner surface of the frame body 200 and reaching the optical touch component 302. This configuration further reduces the likelihood of moisture corrosion on the optical touch component 302.
[0461] It should be noted that in the first direction X, the width of the first absorbent section 400 may be less than or equal to that of the first water guide groove K1. This ensures that the first absorbent section 400 can be positioned within the first water guide groove K1. When the width of the first absorbent section 400 in the first direction X is less than the width of the first water guide groove K1, the first absorbent section 400 must still contact the end surface of the light-filtering strip 301 to directly absorb water from this surface.
[0462] In the present disclosure, refer to FIG. 76 and FIG. 77, where FIG. 76 provides a partial enlarged view of another optical touch frame embodiment, and FIG. 77 shows a partial enlarged view of an optical touch frame without the optical touch component. The drainage structure 203 on the plate section 201 may include a third water guide groove K3.
[0463] The projection of the optical touch component 302 on the plate section 201 may overlap with the area of the third water guide groove K3. Here, the third water guide groove K3 is located on the side of the plate section 201 facing the enclosing section 202. The third water guide groove K3 may cut through at least part of the second rib 2012b and the first rib 2012a. This ensures that water droplets entering the second installation groove S2's portion located on the plate section 201 will fall directly into the third water guide groove K3 after reaching its position and flow within the third water guide groove K3. Thus, the third water guide groove K3 prevents water droplets from flowing within the second installation groove S2, avoiding moisture corrosion on the optical touch component 302.
[0464] In the present disclosure, as shown in FIG. 76 and FIG. 77, water droplets flowing along the second water flow path B2 to the end of a portion of the groove body located on the plate section of the second installation groove S2 may flow along the gap between the second rib 2012b and the optical touch component 302 or along the gap between the first rib 2012a and the optical touch component 302. Thus, the complete penetration of the third water guide groove K3 through the second rib 2012b ensures that water droplets flowing through the gap between the second rib 2012b and the optical touch component 302 can fall into the third water guide groove K3. Additionally, the portion of the third water guide groove K3 penetrating the first rib 2012a ensures that water droplets flowing through the gap between the first rib 2012a and the optical touch component 302 can also fall into the third water guide groove K3.
[0465] Optionally, as shown in FIG. 76 and FIG. 77, the drainage structure 203 on the plate section 201 may also include a first water guide groove K1. The projection of the optical touch component 302 on the plate section 201 does not overlap the area of the first water guide groove K1. The end of the second installation groove S2 in the second connecting piece 2012 may communicate with the first water guide groove K1. The optical touch component 302 may include a circuit board 3021 and a target device connected to the circuit board 3021. The circuit board 3021 of the optical touch component 302 may be installed in the second installation groove S2. In the first direction X, the third water guide groove K3 may be located between the first water guide groove K1 and the target device. This ensures that water droplets entering the second installation groove S2 flow into the third water guide groove K3 before reaching the target device, where they are blocked, preventing them from reaching the target device and protecting it from moisture corrosion.
[0466] It is worth noting that the target device in the optical touch component 302 refers to the component located at the edge of multiple components connected to the circuit board 3021 in the first direction X. For example, the target device may be a terminal. The multiple components connected to the circuit board 3021 in the optical touch component 302 may include key components for realizing the touch function, such as infrared transmitting elements, infrared receiving elements, and terminals. By setting the third water guide groove K3 between the target device and the first water guide groove K1, the key components of the optical touch component 302 are protected from moisture corrosion, ensuring the proper functionality of the optical touch component 302.
[0467] For example, in the first direction X, the distance between the groove surface of the third water guide groove K3 facing the first water guide groove K1 and the groove surface of the first water guide groove K1 facing the second connecting piece 2012 can range from zero to three millimeters. Here, the third water guide groove K3 is always located between the first water guide groove K1 and the target device.
[0468] When the distance between the groove surface of the third water guide groove K3 facing the first water guide groove K1 and the groove surface of the first water guide groove K1 facing the second connecting piece 2012 is zero, the third water guide groove K3 can directly communicate with the first water guide groove K1. In this case, water droplets flowing along the second water flow path B2 can enter the third water guide groove K3 before reaching the end of the second installation groove S2, preventing their flow within the second installation groove S2.
[0469] When the distance between the groove surface of the third water guide groove K3 facing the first water guide groove K1 and the groove surface of the first water guide groove K1 facing the second connecting piece 2012 is greater than zero but less than or equal to three millimeters, water droplets flowing to the end of the second installation groove S2 along the second water flow path B2 will first flow within the second installation groove S2. Upon reaching the point where the second installation groove S2 communicates with the third water guide groove K3, they will fall into the third water guide groove K3, preventing further flow within the second installation groove S2.
[0470] Optionally, as shown in FIG. 76 and FIG. 77, the frame body 200 in the optical touch frame may also include a partition plate 204. The partition plate 204 in the frame body 200 may be located between the plate section 201 and the enclosing section 202 in the third direction Z and fixedly connected to both. The partition plate 204 divides the accommodation space D in the frame body 200 into a first cavity D1 and a second cavity D2 arranged in the second direction Y, with the first cavity D1 closer to the light-filtering strip 301 than the second cavity D2. The optical touch component 302 may be located in the first cavity D1. The projection of the third water guide groove K3 on the plate section 201 may overlap with the projection of the partition plate 204 on the plate section 201. That is, the third water guide groove K3 may also penetrate the partition plate 204.
[0471] Thus, water droplets flowing from the second installation groove S2 into the third water guide groove K3 can flow through the third water guide groove K3 and the partition plate 204 into the second cavity D2, preventing their accumulation in the first cavity D1 that contains the optical touch component 302. This further reduces the likelihood of moisture corrosion on the optical touch component 302. In the second direction Y, the third water guide groove K3 may penetrate the partition plate 204. The length of the third water guide groove K3 in the second direction Y may be shorter than that of the first water guide groove K1. This allows water droplets in the third water guide groove K3 to eventually flow out and into the first water guide groove K1, from which they can exit the frame body 200.
[0472] In the present disclosure, refer to FIG. 78, which shows another embodiment of the optical touch frame. When the side of the enclosing section 202 of the frame body 200 opposite the plate section 201 has a drainage structure 203, the drainage structure 203 may include a water-blocking groove H to prevent water droplets from corroding the optical touch component 302. In the first direction X, the distance between the water-blocking groove H and the end of the enclosing section 202 may be smaller than the distance between the water-blocking groove H and the middle of the enclosing section 202. In other words, the water-blocking groove H may be positioned closer to the end of the enclosing section 202 in the first direction X. The distance between the side of the water-blocking groove H facing the end of the enclosing section 202 and the enclosing section 202's end may be less than or equal to 30 millimeters.
[0473] In this way, when water droplets are present on the side of the enclosing section 202 opposite the plate section 201, the water-blocking groove H can block the flow of water droplets toward the edge of the enclosing section 202, thereby preventing water droplets from entering the accommodating space D through the edge of the enclosing section 202. This reduces the likelihood of moisture corrosion of the optical touch component 302 and improves the reliability of the display device equipped with the optical touch frame.
[0474] Optionally, as shown in FIG. 79, which illustrates another embodiment of the optical touch frame provided in the present disclosure, the water-blocking groove H can include a first groove body H1 and a second groove body H2 that are interconnected. The first groove body H1 may extend parallel to the third direction Z, while the second groove body H2 may extend parallel to the second direction Y. In the second direction Y, the first groove body H1 is closer to the light-filtering strip 301 than the second groove body H2. With the second groove body H2 extending parallel to the direction of gravity, water droplets accumulated within the water-blocking groove H can flow under gravity along the groove.
[0475] Optionally, as shown in FIG. 79, the enclosing section 202 of the frame body 200 may include a first plate 2021, a second plate 2022, and a third plate 2023 connected sequentially. The second plate 2022 is arranged opposite the plate section 201 in the third direction Z, while the first plate 2021 and the third plate 2023 are arranged opposite each other in the second direction Y. In the second direction Y, the first plate 2021 is closer to the light-filtering strip 301 than the third plate 2023. A first connecting piece 2011 can be located between the side of the first plate 2021 opposite the second plate 2022 and the plate section 201, while the side of the third plate 2023 opposite the second plate 2022 can be fixed to the side of the plate section 201 opposite the first connecting piece 2011. This configuration allows the first plate 2021, second plate 2022, third plate 2023, and plate section 201 to form an enclosing structure around the accommodating space D. The first groove body H1 may be located on the side of the first plate 2021 opposite the third plate 2023, and the second groove body H2 may be located on the side of the second plate 2022 opposite the plate section 201.
[0476] Optionally, as shown in FIG. 80 and FIG. 81, where FIG. 80 is a partial schematic view of another embodiment of the optical touch frame provided in the present disclosure, and FIG. 81 is a partial exploded view, the optical touch frame may also include a second absorbent section 500. The second absorbent section 500 can be located within the water-blocking groove H. This allows water droplets flowing into the water-blocking groove H to be directly absorbed by the second absorbent section 500, thereby preventing damage to the optical touch component caused by arbitrary water droplet flow.
[0477] Optionally, the second absorbent section 500 may include a first portion 501 and a second portion 502 connected to each other. At least part of the first portion 501 may be located within the water-blocking groove H, while the second portion 502 may be in contact with the side of the light-filtering strip 301 facing the enclosing section 202 in the third direction Z. This arrangement allows water droplets accumulating on the light-filtering strip 301 to be directly absorbed by the second portion 502 of the second absorbent section 500, preventing water droplets from flowing along the light-filtering strip 301 to its edge and into the accommodating space D of the frame body 201. This helps prevent water droplets from corroding the optical touch component 302 located within the accommodating space D, thus enhancing the reliability of the optical touch component 302.
[0478] In the display device, the second portion 502 of the second absorbent section 500 can be located between the light-filtering strip 301 and the display panel 100. During the operation of the display device, the second portion 502 of the second absorbent section 500 can absorb moisture accumulating between the light-filtering strip 301 and the display panel 100, preventing water droplets from flowing along the light-filtering strip 301 to its edge.
[0479] It should be noted that, in the first direction X, the distance between the side of the second absorbent section 500 facing the edge of the frame body 200 and the end surface of the second connecting piece 1021 can be less than or equal to 30 millimeters. When this distance equals zero, the second absorbent section 500 can absorb all moisture located between the light-filtering strip 301 and the display panel 100. When the distance is greater than zero but less than or equal to 20 millimeters, moisture between the second absorbent section 500 and the end surface of the second connecting piece 1021 can flow to the edge of the light-filtering strip 301, ensuring that the moisture flowing to the edge of the light-filtering strip 301 does not excessively drip onto the optical touch component 302.
[0480] Optionally, the depth of the water-blocking groove H may be greater than or equal to the thickness of the first portion 501. This ensures that any water overflowing from the second absorbent section 500 after it has absorbed its capacity can be blocked by the water-blocking groove H, preventing water droplets from flowing externally to the frame body 200 and into its interior, further reducing the likelihood of moisture corrosion of the first infrared touch circuit board.
[0481] In the present disclosure, as shown in FIG. 82, which is a partial enlarged view of the display device provided in this embodiment, the light-filtering strip 301 and the optical touch component 302 in the optical touch frame can be arranged along the second direction Y, with the light-filtering strip 301 closer to the display panel 100 of the display device than the optical touch component 302.
[0482] It should be noted that, as shown in FIG. 82, in the third direction Z, the first connecting piece 2011 of the frame body 200 can include a first connecting section 2011a and a second connecting section 2011b arranged oppositely. The first connecting section 2011a can be fixed to the side of the plate section 201 facing the enclosing section 202, while the second connecting section 2011b can be fixed to the side of the enclosing section 202 facing the plate section 201. Two sides of the light-filtering strip 301, arranged oppositely in the third direction Z, can be fixed to the first connecting section 2011a and the second connecting section 2011b. Since a gap exists between the first connecting section 2011a and the second connecting section 2011b that communicates with the accommodating space D, and the light-filtering strip 301 is located within this gap, it ensures that the infrared rays emitted by the optical touch component 302 within the accommodating space D are emitted after passing through the light-filtering strip 301.
[0483] Similarly, as shown in FIG. 82, in the third direction Z, the second connecting piece 2012 in the frame body 200 may include a third connecting section 20121 and a fourth connecting section 20122, arranged opposite each other. The third connecting section 20121 may be fixed to the side of the plate section 201 facing the enclosing section 202, while the fourth connecting section 20122 may be fixed to the side of the enclosing section 202 facing the plate section 201. The optical touch component 302, positioned on opposite sides in the third direction Z, may be fixedly connected to the third connecting section 20121 and the fourth connecting section 20122. In this way, the optical touch component 302 can be securely installed within the accommodating space D.
[0484] Since water droplets present on the front of the display device flow along the inner surface of the plate section 201, water droplets following the second water flow path B2 may reach the end of the second mounting groove S2 located on the plate section 201. There, they may erode the entire optical touch component 302 through the portion of the optical touch component 302 located within the second mounting groove S2. To address this, the first drainage groove K1, second drainage groove K2, and third drainage groove K3, designed to block water droplet erosion of the optical touch component 302 in the aforementioned embodiments, are all located on the side of the plate section 201 facing the enclosing section 202.
[0485] In summary, the present disclosure provides an optical touch frame comprising a frame body and an optical touch component. The side of the plate section in the frame body facing the enclosing section, and / or the side of the enclosing section opposite the plate section, may include a drainage structure. The drainage structure on the plate section can be located within the accommodating space of the frame body, allowing water droplets entering the frame body to flow along the drainage structure and preventing them from reaching the optical touch component. The drainage structure on the enclosing section can be located outside the accommodating space, ensuring that water droplets present on the side of the enclosing section opposite the plate section flow along the drainage structure instead of entering the frame body and reaching the optical touch component. This reduces the likelihood of moisture corrosion of the optical touch component, improving the reliability of display devices equipped with the optical touch frame.
[0486] The present disclosure also provides another embodiment of an optical touch frame. Refer to FIG. 83, which shows a partial enlarged view of the optical touch frame. The optical touch frame may include the frame body 200, the optical touch component 302, the light-filtering strip 301, and a second absorbent section 500.
[0487] The frame body 200 extends in the first direction X and comprises a plate section 201 and an enclosing section 202 arranged opposite each other in the third direction Z, with an accommodating space D located between the plate section 201 and the enclosing section 202. The first direction X intersects with the third direction Z.
[0488] The optical touch component 302 is installed within the accommodating space D, and the light-filtering strip 301 is installed between the plate section 201 and the enclosing section 202. The light-filtering strip 301 and the optical touch component 302 are arranged along the second direction Y, which intersects with both the first direction X and the third direction Z.
[0489] The second absorbent section 500 is located near the end of the enclosing section 202 in the first direction X, with at least part of the second absorbent section 500 in contact with the side of the light-filtering strip 301 facing the enclosing section 202 in the third direction Z. This design allows water droplets accumulating on the light-filtering strip 301 to be absorbed by the part of the second absorbent section 500 in contact with the enclosing section 202, preventing water droplets from flowing along the light-filtering strip 301 to its end and into the accommodating space D of the frame body 201. This prevents water droplets from corroding the optical touch component 302 located within the accommodating space D, enhancing the reliability of the optical touch component 302.
[0490] The present disclosure also provides a display device that can utilize the optical touch frame described in the embodiments above. As shown in FIG. 67 and FIG. 83, the display device may include a first optical touch frame 701 and a display panel 100. The first optical touch frame 701 may correspond to the optical touch frame described in the above embodiments, fixed to the lower side of the display panel 100. The first optical touch frame 701 extends parallel to the first direction X.
[0491] Optionally, the display device may also include a second optical touch frame 702 and two opposing third optical touch frames 703. The first optical touch frame 701 may be fixed to the bottom side of the display panel 100, the second optical touch frame 702 to the upper side of the display panel 100, and the two third optical touch frames 703 to the left and right sides of the display panel 100, respectively. Here, the second optical touch frame 702 extends parallel to the first direction X, while the two third optical touch frames 703 extend parallel to the second direction Y.
[0492] Optionally, as shown in FIG. 84, which provides a partial enlarged top view of the display device, there is a gap between the optical touch component 7031 in the third optical touch frame 703 and the light-filtering strip 301 in the first optical touch frame 701. This design ensures that during device operation, any shaking of the display device does not cause interference between the light-filtering strip 301 of the first optical touch frame 701 and the optical touch component 7031 of the third optical touch frame 703, thereby preventing damage to the optical touch component 7031 by the light-filtering strip 301. For example, the length L2 of the gap in the first direction X between the optical touch component 7031 in the third optical touch frame 703 and the end surface of the light-filtering strip 301 in the first optical touch frame 701 can be greater than or equal to 0.5 mm.
[0493] Optionally, as shown in FIG. 67, the end surface of the light-filtering strip 7031 in the third optical touch frame 703, opposite the surface of the light-filtering strip 301 in the first optical touch frame 701 that faces the optical touch component, may have a first gap, corresponding to the second seam P2 described in the above embodiments.
[0494] Optionally, as shown in FIG. 67, the end surface of the frame body 7032 in the third optical touch frame 703, facing the display panel 100, may have a second gap with the surface of the frame body 200 in the first optical touch component 701 facing the display panel 100, corresponding to the first seam P1 described in the above embodiments.
[0495] When water droplets are present on the front surface of the display device, they may enter the frame body 200 of the first optical touch frame 701 through the first and second gaps, corroding the optical touch component 302 inside the frame body 200. The water-blocking structure in the first optical touch frame 701 can block the flow of water toward the optical touch component 302, reducing the likelihood of moisture corrosion and improving the reliability of the optical touch component 302 and the display device as a whole.
[0496] In the present disclosure, refer to FIG. 85, which provides a schematic view of another display device embodiment. The display device may also include four corner connectors 600. These corner connectors 600 can connect the end sections of the frame bodies in the first optical touch frame 701 and the two third optical touch frames 703, as well as the end sections of the frame body in the second optical touch frame 702 and the two third optical touch frames 703.
[0497] For example, as shown in FIG. 85, to connect the end section of the frame body in the first optical touch frame 701 to the end section of the frame body in one of the third optical touch frames 703, the corner connector 600 may extend parallel to the second direction Y. In the second direction Y, one side of the corner connector 600 facing the third optical touch frame 703 may be fixedly connected to the end section of the frame body in the third optical touch frame 703, while in the first direction X, the side of the corner connector 600 facing the first optical touch frame 701 may be fixedly connected to the end section of the frame body in the first optical touch frame 701. In this way, the corner connector 600 can join the frame body of the first optical touch frame 701 with that of one of the third optical touch frames 703.
[0498] It should be noted that the other structures of the first optical touch frame in this display device can reference the optical touch frame described in the embodiments above and are not further detailed here.
[0499] The foregoing description of the embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to explain the principles of the invention and its best mode practical application, thereby to enable persons skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the invention” , “the present invention” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to exemplary embodiments of the invention does not imply a limitation on the invention, and no such limitation is to be inferred. The invention is limited only by the spirit and scope of the appended claims. Moreover, these claims may refer to use “first” , “second” , etc. following with noun or element. Such terms should be understood as a nomenclature and should not be construed as giving the limitation on the number of the elements modified by such nomenclature unless specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It should be appreciated that variations may be made in the embodiments described by persons skilled in the art without departing from the scope of the present invention as defined by the following claims. Moreover, no element and component in the present disclosure is intended to be dedicated to the public regardless of whether the element or component is explicitly recited in the following claims.
Claims
1.A frame of a display device, comprising:a bezel;a printed circuit board;an assembly groove configured to allow the printed circuit board to be assembled onto the bezel; anda water clearance structure recessing into a portion of the bezel;wherein the water clearance structure is configured to collect residual water and direct it away from the assembly groove.2.The frame of the display device of claim 1, wherein the water clearance structure recesses into the portion of the bezel, resulting in a height difference with respect to the assembly groove; andthe height difference is equal to or greater than 0.2 mm.3.The frame of the display device of claim 1, wherein the bezel comprises two ribs surrounding two sides of the assembly groove;wherein, during assembly of the printed circuit board, the printed circuit board is configured to slide into a cavity through the assembly groove defined by the two ribs; andthe two ribs have a shape conforming to the shape of the water clearance structure.4.The frame of the display device of claim 3, wherein the water clearance structure comprises a first clearance structure and a second clearance structure connected to each other; andthe second clearance structure is between the first clearance structure and the two ribs.5.The frame of the display device of claim 4, wherein an end of the printed circuit board extends beyond an end of the two ribs; andan orthographic projection of the second clearance structure on a first profile component covers an orthographic projection of a portion of the printed circuit board extending beyond the end of the two ribs on the first profile component.6.The frame of the display device of claim 4, wherein, along an extension direction of the first clearance structure, a length of the first clearance structure is greater than a length of the second clearance structure.7.The frame of the display device of any one of claims 1 to 6, wherein the water clearance structure comprises a water blocking groove;wherein the water blocking groove recesses into the portion of the bezel;wherein the water blocking groove is underneath or outside an entrance to a cavity for receiving the printed circuit board; andthe water blocking groove is configured to prevent water from reaching connecting terminals of the printed circuit board inside the cavity.8.The frame of the display device of claim 7, wherein an orthographic projection of the printed circuit board on a first profile component at least partially overlaps with an orthographic projection of the water blocking groove on the first profile component.9.The frame of the display device of claim 7, wherein the water clearance structure further comprises an additional clearance structure;along a second direction, an orthographic projection of the water blocking groove on a first profile component is between an orthographic projection of the additional clearance structure on the first profile component and an orthographic projection of the connecting terminals of the printed circuit board on the first profile component; andthe second direction is an extension direction of a light-filtering strip.10.The frame of the display device of any one of claims 1 to 9, comprising a cavity configured to receive the printed circuit board;wherein the bezel comprises a first profile component and a second profile component;the first profile component and the second profile component form two side walls of the cavity;the water clearance structure recesses into the first profile component; andwhen the frame of the display device is assembled with a display panel, the first profile component is on a side of the second profile component closer to a light emitting side of the display panel.11.The frame of the display device of claim 1, further comprising a first absorbent attached to the water clearance structure;wherein an orthographic projection of the first absorbent on a first profile component at least partially overlaps with an orthographic projection of the water clearance structure on the first profile component;the first absorbent has a width along a second direction equal to or less than a width of the water clearance structure along the second direction; andthe second direction is an extension direction of a light-filtering strip.12.The frame of the display device of claim 11, wherein the first absorbent has a thickness equal to or greater than 4.0 mm.13.The frame of the display device of any one of claims 1 to 12, further comprising a second absorbent attached to the bezel.14.The frame of the display device of claim 13, wherein the bezel has a third end abutting a cavity receiving at least a portion of the printed circuit board; andthe second absorbent is spaced apart from the third end by a spacing distance in a range of 10 to 20 mm.15.The frame of the display device of claim 13, further comprising a recess recessing into the bezel on a first side and a second side;wherein the first side is connected to the second side; andthe second absorbent is at least partially in the recess, extending from the first side to the second side of the bezel.16.The frame of the display device of any one of claims 1 to 15, further comprising a water blocking structure configured to prevent water from entering the assembly groove and reaching the printed circuit board.17.The frame of the display device of claim 16, wherein a side wall of the water clearance structure is aligned flush with a second end of the water blocking structure.18.The frame of the display device of claim 16, wherein an orthographic projection of the water blocking structure on a third profile component at least partially overlaps with an orthographic projection of the printed circuit board on the third profile component, and is at least partially non-overlapping with the orthographic projection of the printed circuit board on the third profile component.19.The frame of the display device of claim 16, wherein the printed circuit board comprises a first portion and a second portion spaced apart from each other; andan orthographic projection of the water blocking structure on a third profile component at least partially overlaps with an orthographic projection of the first portion of the printed circuit board on the third profile component, and is at least partially non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component.20.The frame of the display device of claim 19, wherein a portion of the orthographic projection of the water blocking structure on the third profile component that is non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component has a minimum width along a first direction equal to or greater than 0.5 mm.21.The frame of the display device of claim 19, wherein an orthographic projection of the second portion of the printed circuit board on the first profile component, the portion of the orthographic projection of the water blocking structure on the first profile component that is non-overlapping with the orthographic projection of the first portion of the printed circuit board on the third profile component, and the orthographic projection of the first portion of the printed circuit board on the third profile component, are sequentially arranged along the first direction.22.The frame of the display device of claim 19, wherein the orthographic projection of the water blocking structure on the third profile component is non-overlapping with an orthographic projection of the second portion of the printed circuit board on the third profile component.23.The frame of the display device of claim 22, wherein the orthographic projection of the water blocking structure on the third profile component is spaced apart from the orthographic projection of the second portion of the printed circuit board on the third profile component by a minimum distance along a first direction; andthe minimum distance is equal to or greater than 0.5 mm.24.The frame of the display device of claim 16, further comprising a light-filtering strip;wherein the light-filtering strip is attached to the water blocking structure;the light-filtering strip has a first end;the water blocking structure has a second end;the first end extends beyond the second end along a second direction; andthe second direction is an extension direction of the light-filtering strip.25.The frame of the display device of claim 24, wherein the first end extends beyond the second end along the second direction by a margin in a range of 0 to 0.3mm.26.The frame of the display device of claim 24, wherein the printed circuit board has a fourth end;the first end extends beyond the fourth end along the second direction; andthe second end extends beyond the fourth end along the second direction.27.A display device, comprising the frame according to any one of claims 1 to 26, and a display panel, wherein the frame is assembled onto the display panel.28.An optical touch frame, characterized by comprising:a first frame section, wherein the first frame section extends along a first direction, and includes a first circuit board chamber, an end surface of the first frame section has a first port that communicates with the first circuit board chamber, a sidewall of the first circuit board chamber has a wiring opening, and an opening direction of the wiring opening differs from the opening direction of the first port;a first touch circuit board, wherein the first touch circuit board is located within the first circuit board chamber;a waterproof plug, wherein the waterproof plug is positioned at the first port to seal the first port; anda first connecting wire, wherein the first connecting wire is connected to an end of the first touch circuit board and extends out of the first frame section through the wiring opening.29.An optical touch frame, characterized by comprising:a first frame section, wherein an interior of the first frame section includes a receiving space, the first frame section has an end surface and a first side surface connected to the end surface, the end surface of the first frame section includes a first port that communicates with the receiving space;a first connecting corner, wherein a first end of the first connecting corner is spliced to the end of the first frame section, the first connecting corner has a splicing surface opposite to the end surface of the first frame section, and a splicing gap exists between the splicing surface and the end surface of the first frame section; anda water collection groove, wherein an area of the splicing surface opposite to the first port includes the water collection groove, which extends into the receiving space;wherein an opening of the water collection groove faces the first side surface and aligns with the splicing gap.30.An optical touch frame, characterized by comprising frame body and an optical touch component;wherein an extension direction of the frame body is parallel to a second direction;the frame body includes a plate section and an enclosing section that are oppositely arranged in a third direction, with a receiving space between the plate section and the enclosing section; the second direction intersects with the third direction;wherein, the receiving space contains a first mounting groove and a water guide groove, the first mounting groove is used for installing the optical touch component, both the extension directions of the first mounting groove and the water guide groove are parallel to the second direction.31.An optical touch frame, characterized by comprising a frame body and an optical touch component;wherein an extension direction of the frame body is parallel to a first direction, the frame body includes a plate section and an enclosing section that are oppositely arranged in a third direction, with a receiving space between the plate section and the enclosing section; the first direction intersects with the third direction;the optical touch component is installed within the receiving space; anda surface of the plate section facing the enclosing section and / or the surface of the enclosing section facing away from the plate section is provided with a drainage structure.
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