Flat-panel display
The flat-panel display addresses the issue of protruding back covers by using a simplified supporting structure and cover plate, reducing thickness and costs, and enhancing aesthetics through a streamlined assembly process.
Patent Information
- Application Number
- PCT/CN2024/103134
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2026-01-08
AI Technical Summary
Conventional industrial flat-panel displays have a protruding back cover due to VESA mounting holes, leading to increased thickness, complexity, and poor aesthetic appearance, while requiring multiple parts and molds.
A flat-panel display design that eliminates the metal back plate and uses a simplified supporting structure with a cover plate, allowing the printed circuit board assembly to be mounted on supporting feet, reducing part count and thickness, and incorporating a cable channel and annular grooves for simplified assembly and aesthetic enhancement.
The design achieves a thinner, lighter, and more aesthetically pleasing display with reduced costs and improved assembly efficiency, while maintaining structural integrity and facilitating easy mounting and connection processes.
Smart Images

Figure CN2024103134_08012026_PF_FP_ABST
Abstract
Description
FLAT-PANEL DISPLAYTECHNICAL FIELD
[0001] The present disclosure relates to the technical field of industrial displays, and in particular, relates to a flat-panel display.BACKGROUND
[0002] With rapid developments of the electronics industry, application of industrial flat-panel devices is becoming more and more extensive. Different from commercial displays, industrial flat-panel devices need to have characteristics of adapting to extreme environments, stable operation and long service life.
[0003] To accommodate the characteristics of the flat-panel device, it is common practice to mount a printed circuit board assembly (PCBA) behind a display screen and place a back cover over the printed circuit board assembly to provide protection.
[0004] FIG. 5 is an exploded view illustrating a structure of a conventional flat-panel display. Referring to FIG. 5, a mechanical structure of a conventional flat-panel display on the market includes, from bottom to top, a touch screen 42', a front frame 60, a display screen 41', a metal back plate 70, a printed circuit board assembly 10, and a back cover 80. The touch screen 42'is secured to the front frame 60 along a direction opposite to a thickness direction A, the display screen 41'is secured to the front frame 60 along the thickness direction A, and the metal back plate 70 is mounted on the front frame 60 to secure and protect the display screen 41'. Cables (not shown in FIG. 5) are also arranged between the display screen 41'a nd the metal back plate 70. One end of each of the cables is connected to the display screen 41'or the touch screen 42', and the other end of each of the cables extends from a notch 71 opened in the metal back plate 70 to connect the printed circuit board assembly 10, which is mounted on the metal back plate 70. The back cover 80 is secured to the metal back plate 70, and covers the printed circuit board assembly 10. Due to the fact that the cables are arranged between the display screen 41'a nd the metal back plate 70 in this structure, this structure occupies a space along the thickness direction.
[0005] In addition, since several Video Electronics Standards Association (VESA) mounting holes 50 are defined in the back cover 80 (four VESA mounting holes are schematically drawn in FIG. 5, but only one is marked) . The VESA mounting holes 50 are standard mounting holes for mounting devices such as monitors and televisions, which are compatible and versatile for mounting devices of different brands and models to ensure the stability and safety after the device is mounted. Due to the limitation of the mounting standard, the VESA mounting holes 50 generally use bolts with a height of 10mm. Therefore, the height of the back cover 80 along the thickness direction A needs to be greater than 10mm, which results in a large thickness of the entire product, and the protruding back cover 80 makes the appearance of the product poor in aesthetic feelings.SUMMARY
[0006] Embodiments of the present disclosure are intended to provide a flat-panel display, which does not have a protruding back cover, uses a small number of parts with simple structure to facilitate cost reduction and improvement of assembly efficiency, has a small thickness and light weight, and has a fresh and beautiful appearance.
[0007] The flat-panel display includes a printed circuit board assembly, an assembly housing, and a cover plate. The assembly housing has an accommodating chamber therein. A first opening in communication with the accommodating chamber is arranged in a back side of the assembly housing along a thickness direction thereof. A supporting structure facing the first opening along a direction opposite to the thickness direction is arranged in the accommodating chamber of the assembly housing. The printed circuit board assembly is disposed in the accommodating chamber and is lapped on the supporting structure along the thickness direction. The first opening is configured to allow the printed circuit board assembly to pass through along the thickness direction at a mounting angle thereof. The cover plate is covered on the first opening.
[0008] By configuring a supporting structure that sinks in the accommodating chamber and mounting the printed circuit board assembly on the supporting structure, compared to the existing flat-panel displays, the flat-panel display according to the present disclosure does not have the metal back plate, thus reducing the number of parts, weight and cost. At the same time, since the printed circuit board assembly has a size smaller than that of the assembly housing, after the printed circuit board assembly is mounted on the supporting structure, a space is defined around the printed circuit board assembly to accommodate the cables, thereby an originally occupied or limited space along the thickness direction to reduce the thickness of the flat-panel display, such that the flat-panel display is applicable to a narrow space. By closing the first opening with the cover plate to replace the protruding back cover, the part structure is simplified and the cost is reduced, and the appearance of the flat-panel display is fresh and beautiful.
[0009] In some exemplary embodiments, the supporting structure includes a plurality of supporting feet. Each of the plurality of supporting feet includes an extension portion and a supporting portion. The extension portion extends along the thickness direction, and one end of the extension portion is connected to a back plate of the assembly housing. The supporting portion is connected to the other end of the extension portion and protrudes along a direction perpendicular to the thickness direction. An edge of the printed circuit board assembly is lapped on the supporting portion. This supporting structure is simple and lightweight, and facilitates mounting of the printed circuit board assembly.
[0010] In some exemplary embodiments, a threaded hole is arranged in the supporting portion to secure the printed circuit board assembly with a screw. In this way, mounting of the printed circuit board assembly is facilitated, and the mounting process is simplified.
[0011] In some exemplary embodiments, a second opening in communication with the accommodating chamber is arranged in a front side of the assembly housing along the thickness direction. An annular edge of the assembly housing surrounding the second opening sinks along the direction opposite to the thickness direction to form an annular mounting groove. The flat-panel display further includes a display component for displaying images. The display component is embedded in the annular mounting groove along the direction opposite to the thickness direction and closes the second opening. In this way, mounting of the display component is facilitated.
[0012] In some exemplary embodiments, the display component includes a display screen and a touch screen which are overlapped along the thickness direction. The display screen is arranged in the accommodating chamber, and the touch screen is arranged in the annular mounting groove. In this way, the mounting process is simplified, and the assembly efficiency is improved.
[0013] In some exemplary embodiments, the touch screen is secured to a wall of the annular mounting groove via a bonding structure, and / or the touch screen is secured to the display screen via the bonding structure. In this way, the mounting process is simplified, and the assembly efficiency is improved.
[0014] In some exemplary embodiments, a cable channel is recessed in the back side of the assembly housing. The cable channel is arranged on one side of the first opening along a cable routing direction, wherein the cable routing direction is perpendicular to the thickness direction. One end of the cable channel away from the first opening along the cable routing direction extends to an edge of the assembly housing. The assembly housing has a cable channel wall perpendicular to the cable routing direction at an end of the cable channel close to the first opening along the cable routing direction. Mounting holes are arranged in the cannel channel wall. The printed circuit board assembly further includes connection terminals arranged in the mounting holes. Each of the connections terminals is configured to be connected to an external circuit. In this way, connection between the printed circuit board assembly and the external circuit is facilitated.
[0015] In some exemplary embodiments, an annular edge of the assembly housing surrounding the first opening sinks along the thickness direction to form an annular groove. The cover plate is embedded in the annular groove along the thickness direction to close the first opening. In this way, mounting of the cover plate is facilitated, and it is easy to obtain a flat-panel display with a flat back surface instead of a protruding back cover.
[0016] In some exemplary embodiments, a bonding structure is arranged between the cover plate and a wall of the annular groove in the flat-panel display. In this way, the cover plate is mounted quickly and easily, without the need for drilling holes for connection, and the appearance is fresh and beautiful.
[0017] In some exemplary embodiments, the printed circuit board assembly and the first opening form an operating slit in the direction perpendicular to the thickness direction. By this means, it facilitates to pull the cables out from the operating slit and connect them to the printed circuit board assembly.BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The accompanying drawings are merely for schematic and illustrative description and demonstration of the present disclosure, instead of limiting the scope of the present disclosure.
[0019] FIG. 1 is an exploded view of a flat-panel display according to an exemplary embodiment of the present disclosure.
[0020] FIG. 2 is a schematic diagram illustrating a supporting structure.
[0021] FIG. 3 is a three-dimensional structure diagram of the flat-panel display according to an exemplary embodiment of the present disclosure.
[0022] FIG. 4 is a schematic diagram illustrating an assembly process of the flat-panel display.
[0023] FIG. 5 is an exploded view illustrating a structure of a conventional flat-panel display.
[0024] Reference numerals and denotations thereof:
[0025] 10-Printed circuit board assembly
[0026] 11-Terminal
[0027] 20-Assembly housing
[0028] 21-Accommodating chamber
[0029] 22-First opening
[0030] 23-Supporting structure
[0031] 230-Supporting foot
[0032] 231-Extension portion
[0033] 232-Supporting portion
[0034] 24-Second opening
[0035] 25-Annular mounting groove
[0036] 26-Cable channel
[0037] 261-Cable channel wall
[0038] 27-Annular groove
[0039] 28-Operating slit
[0040] 30-Cover plate
[0041] 40-Display component
[0042] 41, 41’-Display screen
[0043] 42, 42’-Touch screen
[0044] 50-VESA mounting hole
[0045] 60-Front frame
[0046] 70-Metal back plate
[0047] 71-Notch
[0048] 80-Back cover
[0049] A-Thickness direction
[0050] C-Cable routing direction
[0051] D-Design areaDETAILED DESCRIPTION
[0052] For clearer descriptions of the technical features, objects, and the technical effects of the present disclosure, the specific embodiments of the present disclosure are hereinafter described with reference to the accompanying drawings. In the drawings, like reference numerals denote elements having the same structure or having the similar structure but the same function.
[0053] In this text, the term "exemplary" or "schematic" is used herein to mean "serving as an example, instance, or illustration, " and any illustration or embodiment described herein as "exemplary" shall not be necessarily construed as preferred or advantageous over other illustrations or embodiments.
[0054] In this text, the terms "first, " "second, " and the like do not represent degrees of importance or a sequence, but only for differentiation, and for ease of description.
[0055] FIG. 1 is an exploded view of a flat-panel display according to an exemplary embodiment of the present disclosure. Referring to FIG. 1, the flat-panel display includes a printed circuit board assembly 10, an assembly housing 20, and a cover plate 30. The assembly housing 20 is functionally equivalent to a combination of a front frame 60 and a metal back plate 70 in FIG. 5. The assembly housing 20 has an accommodating chamber 21 therein. A first opening 22 in communication with the accommodating chamber 21 is arranged in a back side of the assembly housing 20 along a thickness direction A thereof. Arrow A in FIG. 1 and FIG. 5 indicates the thickness direction. A supporting structure 23 facing the first opening 22 along a direction opposite to the thickness direction A is arranged in the accommodating chamber 21 of the assembly housing 20. By configuring a supporting structure that sinks in the accommodating chamber and mounting the printed circuit board assembly on the supporting structure, compared to conventional flat-panel displays, the flat-panel display according to the present disclosure does not have the metal back plate, which reduces the number of parts and the number of molds for manufacturing the parts, and also reduces the weight and cost.
[0056] The printed circuit board assembly 10 is disposed in the accommodating chamber 21, and is lapped on the supporting structure 23 along the thickness direction A. Since the printed circuit board assembly has a size smaller than that of the assembly housing, when the printed circuit board assembly is mounted on the supporting structure, a space is defined around the printed circuit board assembly to accommodate cables, thereby releasing an originally occupied or limited space along the thickness direction of the assembly housing to reduce the thickness thereof, such that the flat-panel display is applicable to a narrow space.
[0057] The first opening 22 is configured to allow the printed circuit board assembly 10 to pass through along the thickness direction A at a mounting angle thereof. The cover plate 30 is functionally equivalent to aback cover 80 in FIG. 5, but compared to the back cover 80 in FIG. 5, the structure of the cover plate 30 is simple and easy to mount. The cover plate 30 is covered on the first opening 22. By closing the first opening with the cover plate in place of a protruding back cover of the flat-panel display in the prior art, the structure of the cover plate is simplified and the cost is reduced, and at the same time, the appearance of the flat-panel display is fresh and beautiful.
[0058] FIG. 2 is a schematic diagram illustrating a supporting structure. Referring to FIG. 2, in an exemplary embodiment, the supporting structure 23 includes four supporting feet 230 (only one support foot is schematically marked in FIG. 2) . Each of the supporting feet 230 includes an extension portion 231 and a supporting portion 232. The extension portion 231 extends along the thickness direction A, and one end of the extension portion is connected to a back plate of the assembly housing 20. The supporting portion 232 is connected to the other end of the extension portion 231, and protrudes along a direction perpendicular to the thickness direction A. An edge of the printed circuit board assembly 10 is lapped on the supporting portion 232. This supporting structure is simple and lightweight, and facilitates mounting of the printed circuit board assembly. In other exemplary embodiments, the supporting structure may include other numbers of support feet or may be structures of other forms.
[0059] In an exemplary embodiment, a threaded hole is further arranged in the supporting portion 232 to secure the printed circuit board assembly 10 with a screw, which is not limited to this. Alternatively, the supporting portion 232 may also be secured to the printed circuit board assembly 10 in other fashions.
[0060] In another exemplary embodiment, referring to FIGS. 1 and 2, a second opening 24 in communication with the accommodating chamber 21 is arranged in a front side of the assembly housing 20 along the thickness direction A. An annular edge of the assembly housing 20 surrounding the second opening 24 sinks along the direction opposite to the thickness direction A to form an annular mounting groove 25. The flat-panel display further includes a display component 40 for displaying images. The display component 40 is embedded in the annular mounting groove 25 along the direction opposite to the thickness direction A, and closes the second opening 24, thereby facilitating mounting of the display component.
[0061] As shown in FIGS. 1 and 2, the display component 40 includes a display screen 41 and a touch screen 42 which are overlapped along the thickness direction A. The display screen 41 is arranged in the accommodating chamber 21, and the touch screen 42 is arranged in the annular mounting groove 25. In an exemplary embodiment, the touch screen 42 is secured to a wall of the annular mounting groove 25 via a bonding structure, and the touch screen 42 is secured to the display screen 41 via a bonding structure. The bonding structure is, for example, a tape with foam. In this way, the height of a gap between the display screen and the touch screen is reduced, the light transmittance of the display component is increased, the number of parts is reduced, the mounting process is simplified, and the assembly efficiency is improved.
[0062] In another exemplary embodiment, only the touch screen 42 is connected to the a wall of the annular mounting groove 25 via the bonding structure, while the display screen 41 is mounted to the assembly housing 20 in other fashions; alternatively, only the touch screen 42 is secured to the display screen 41 via the bonding structure to obtain the display component 40, and the display component 40 is mounted to the assembly housing 20 in other fashions.
[0063] FIG. 3 is a three-dimensional structure diagram of the flat-panel display according to an exemplary embodiment of the present disclosure. Referring to FIG. 3, arrow C indicates a cable routing direction, and the cable routing direction C is perpendicular to the thickness direction A. In an exemplary embodiment, a cable channel 26 is recessed in the back side of the assembly housing 20. The printed circuit board assembly 10 further includes four connection terminals 11 (only one connection terminal is schematically marked in FIG. 3) . Each of the connection terminals 11 are configured to be connected to an external circuit. In other exemplary embodiments, the number of connection terminals of the circuit board 10 may also be other numbers than four.
[0064] The cable channel 26 is arranged in one side of the first opening 22 along the cable routing direction C, and an end of the cable channel 26 away from the first opening 22 along the cable routing direction C extends to an edge of the assembly housing 20. The assembly housing 20 has a cable channel wall 261, which is perpendicular to the cable routing direction C at an end of the cable channel 26 close to the first opening 22 along the cable routing direction C. Mounting holes are arranged in the cable channel wall 261. One side of the printed circuit board assembly 10 where the connection terminals 11 are arranged leans closely against the cable channel wall 261, such that the connection terminals 11 are exposable from the mounting holes. Via the cable channel 26, the external circuits are connected to the connection terminals 11 on the printed circuit board assembly 10. By arranging the connection terminals in the mounting holes, connection between the printed circuit board assembly and the external circuits is facilitated.
[0065] FIG. 4 is a schematic diagram illustrating an assembly process of the flat-panel display. Referring to FIGS. 3 and 4, in an exemplary embodiment, the annular edge of the assembly housing 20 around the first opening 22 sinks along the thickness direction A to form an annular groove 27. The cover plate 30 is embedded in the annular groove 27 along the thickness direction A to close the first opening 22. A bonding structure is arranged between the cover plate 30 and a wall of the annular groove 27. The bonding structure is, for example, a tape with foam. In this way, quick and easy mounting of the cover plate is facilitated, connection between the cover plate and the assembly housing is achieved without drilling holes, and a flat-panel display with a flat back and with no screws or protruding back cover is obtained.
[0066] It should be noted that the mounting of the cover plate is different from the conventional securing approach with screws, and instead the cover plate is connected to the wall of the annular groove by a bonding process, which enhances confidentiality of the product. Therefore, after the flat-panel display is sold, once the user opens the cover plate, the adhesive bond between the cover plate and the wall of the annular groove is difficult to restore to the original factory conditions. Therefore, responsibility for after-sales service can be determined by determining whether the cover plate has been opened by the user, avoiding undesired business disputes. At the same time, since there is no need to make threaded holes in the cover plate, the overall appearance appears neater.
[0067] In an exemplary embodiment, referring to FIG. 4, the dotted line represents the printed circuit board assembly10, and the printed circuit board assembly 10 can enter the accommodating chamber 21 from the first opening 22 and be lapped on the supporting structure 23. It should be noted that after the printed circuit board assembly 10 enters the accommodating chamber 21 from the first opening 22, the side where the connection terminals 11 are arranged leans closely against the cable channel wall 261, such that the connection terminals 11 are exposable from the mounting holes to be connected external circuits, and the other side of the printed circuit board assembly 10 opposite to the connection terminals 11 forms an operating slit 28 with the first opening 22 in the direction perpendicular to the thickness direction A. The cables that are deployed around the supporting structure 23 and connected to the display screen 41 and the touch screen 42 are pulled out from the operating slit 28 and connected to the printed circuit board assembly 10.
[0068] In an exemplary embodiment, an assembly process of the flat-panel display is as follows: firstly, connecting the touch screen and the display screen via the bonding structure to obtain the display component, then connecting the cables to the touch screen and the display screen, and then fixing the cables on the back side of the display screen, with an avoidance to the part directly opposite to the supporting structure; securing the obtained display component and the cables secured on the display screen to the wall of the annular mounting groove via the bonding structure, and at the same time ensuring that connectors of the cables for connecting the printed circuit board assembly are pullable out from the operating slit; mounting the printed circuit board assembly on the four supporting feet of the supporting structure, and at the same time ensuring that the side where the connection terminals are arranged leans closely against the cable channel wall, such that the connection terminals are exposable from the mounting holes; then connecting the cables to the printed circuit board assembly; and finally, covering the cover plate on the wall of the annular groove surrounding the first opening via the bonding structure to complete the assembly.
[0069] In the exemplary embodiment, referring to FIG. 3, four VESA mounting holes 50 around the cover plate 30 (only one VESA mounting hole is schematically marked in FIG. 3) are arranged in the back side of the assembly housing 20 of the flat-panel display. Compared to the VESA mounting holes in the back cover 80 in FIG. 5, the VESA mounting holes for the flat-panel display according to the present disclosure are defined in the assembly housing, thereby significantly improving impact resistance and vibration resistance of the flat-panel display.
[0070] In addition, referring to FIG. 3, two design areas D are further arranged on the back side of the assembly housing, which can be used to create different style elements. For example, the design areas D may be designed into arc or other shapes, and patterns may also be drawn or engraved in these areas to meet aesthetic needs of different consumers.
[0071] It should be understood that, although the present disclosure is described with reference to some exemplary embodiments, none of the embodiments is intended to disclose an independent technical solution. Such description manner of the specification is only for clarity. A person skilled in the art should consider the specification as an entirety. The technical solutions according to the embodiments may also be suitably combined to derive other embodiments that may be understood by a person skilled in the art.
[0072] A series of detailed descriptions given in this specification are merely intended to illustrate exemplary and possible embodiments of the present disclosure, instead of limiting the protection scope of the present disclosure. Any equivalent embodiments or modifications, for example, combinations, segmentations, or repetition of features, derived without departing from the spirit of the present disclosure shall fall within the protection scope of the present disclosure.
Claims
1.A flat-panel display, comprising:a printed circuit board assembly (10) ;an assembly housing (20) having an accommodating chamber (21) therein, wherein a first opening (22) in communication with the accommodating chamber (21) is arranged in a back side of the assembly housing (20) along a thickness direction (A) thereof, and a supporting structure (23) facing the first opening (22) along a direction opposite to the thickness direction (A) is arranged in the accommodating chamber (21) of the assembly housing (20) , the printed circuit board assembly (10) is disposed in the accommodating chamber (21) and is lapped on the supporting structure (23) along the thickness direction (A) , and the first opening (22) is configured to allow the printed circuit board assembly (10) to pass through along the thickness direction (A) at amounting angle thereof; anda cover plate (30) covered on the first opening (22) .2.The flat-panel display according to claim 1, wherein the supporting structure (23) comprises a plurality of supporting feet (230) , each of the plurality of supporting feet (230) comprising an extension portion (231) and a supporting portion (232) , wherein the extension portion (231) extends along the thickness direction (A) and one end of the extension portion (231) is connected to a back plate of the assembly housing (20) , the supporting portion (232) is connected to the other end of the extension portion (231) and protrudes along a direction perpendicular to the thickness direction (A) , and an edge of the printed circuit board assembly (10) is lapped on the supporting portion (232) .3.The flat-panel display to claim 2, wherein a threaded hole is arranged in the supporting portion (232) to secure the printed circuit board assembly (10) with a screw.4.The flat-panel display according to claim 1, wherein a second opening (24) in communication with the accommodating chamber (21) is arranged in a front side of the assembly housing (20) along the thickness direction (A) , and an annular edge of the assembly housing (20) surrounding the second opening (24) sinks along the direction opposite to the thickness direction (A) to form an annular mounting groove (25) ; and the flat-panel display further comprises a display component (40) for displaying images, wherein the display component (40) is embedded in the annular mounting groove (25) along the direction opposite to the thickness direction (A) and closes the second opening (24) .5.The flat-panel display according to claim 4, wherein the display component (40) comprises a display screen (41) and a touch screen (42) which are overlapped along the thickness direction (A) , wherein the display screen (41) is arranged in the accommodating chamber (21) , and the touch screen (42) is arranged in the annular mounting groove (25) .6.The flat-panel display according to claim 5, wherein the touch screen (42) is secured to a wall of the annular mounting groove (25) via a bonding structure, and / or the touch screen (42) is secured to the display screen (41) via the bonding structure.7.The flat-panel display according to claim 1, whereina cable channel (26) is recessed in the back side of the assembly housing (20) , the cable channel (26) is arranged on one side of the first opening (22) along a cable routing direction (C) , the cable routing direction (C) is perpendicular to the thickness direction, and an end of the cable channel (26) away from the first opening (22) along the cable routing direction (C) extends to an edge of the assembly housing (20) ;the assembly housing (20) has a cable channel wall (261) perpendicular to the cable routing direction (C) at an end of the cable channel (26) close to the first opening (22) along the cable routing direction (C) , wherein mounting holes are arranged in the cable channel wall (261) ; andthe printed circuit board assembly (10) further comprises connection terminals (11) arranged in the mounting holes, wherein each of the connection terminals (11) is configured to be connected to an external circuit.8.The flat-panel display according to claim 1, wherein an annular edge of the assembly housing (20) surrounding the first opening (22) sinks along the thickness direction (A) to form an annular groove (27) , and the cover plate (30) is embedded in the annular groove (27) along the thickness direction (A) to close the first opening (22) .9.The flat-panel display according to claim 8, wherein a bonding structure is arranged between the cover plate (30) and a wall of the annular groove (27) in the flat-panel display.10.The flat-panel display according to claim 1, wherein the printed circuit board assembly (10) and the first opening (22) form an operating slit (28) in the direction perpendicular to the thickness direction (A) .
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