Vehicle-mounted touch liquid crystal display module with ultra-narrow frame

Abstract

The utility model aims to provide an ultra-narrow frame vehicle-mounted touch liquid crystal display module which comprises an alloy back plate, a metal middle frame, a backlight module and a display assembly, a plurality of buckle holes distributed at intervals are formed in the side wall of the alloy back plate, a plurality of clamping protruding parts distributed at intervals are arranged on the side wall of the metal middle frame, the metal middle frame is arranged in the alloy back plate in a buckled mode, and the backlight module is arranged in the alloy back plate. The middle of the metal middle frame is provided with a hollow hole, the backlight module is arranged on the inner bottom wall of the alloy back plate, the backlight module abuts against the metal middle frame, the backlight module is aligned with the hollow hole, and the display assembly is arranged on the metal middle frame and covers the hollow hole. Thus, through combination of the metal middle frame and the alloy back plate, a middle frame structure made of a plastic material in the prior art is replaced, so that the overall black edge width of the display module can be reduced, an injection mold with a complex structure does not need to be developed, and the invested production cost of the injection mold can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of display components, and in particular to an ultra-narrow bezel automotive touch LCD display module. Background Technology

[0002] With the continuous development of new energy vehicles, automobiles are moving towards intelligence and multi-functionality. As the carrier for intelligent interaction between the driver and the car, the in-vehicle screen, with its advantages such as large screen and narrow bezel, is more likely to win the favor of consumers.

[0003] Currently, almost all in-vehicle screens in new energy vehicles are touch liquid crystal display modules (TLCMs). Existing in-vehicle TLCM structures are mainly a combination of a metal backplate and a plastic frame.

[0004] However, due to the low strength of the plastic material itself, the thickness of the plastic frame cannot be designed to be too thin. Increasing the thickness of the plastic frame will result in excessively large black borders on the final assembled automotive TLC, severely affecting the overall appearance of the display. Moreover, increasing the thickness of the plastic frame will also increase its structural complexity, leading to increased complexity and cost of the injection mold used to mold the plastic frame. Therefore, based on the goal of reducing production costs and improving display effects, this application proposes an ultra-narrow bezel automotive touch LCD module. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an ultra-narrow bezel automotive touch LCD display module that can replace the existing plastic frame structure, thereby reducing production costs and improving display effects.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An ultra-narrow bezel automotive touchscreen LCD module includes:

[0008] An alloy back plate, wherein a plurality of intermittently distributed buckle holes are provided on the side wall of the alloy back plate;

[0009] A metal frame has several spaced-apart protrusions on its sidewalls. The metal frame is fastened inside the alloy back plate so that each of the protrusions corresponds to and engages with each of the fastening holes. A hollow hole is provided in the center of the metal frame.

[0010] A backlight module, wherein the backlight module is disposed on the inner bottom wall of the alloy back plate, and the backlight module abuts against the metal frame, and the backlight module is aligned with the hollow hole; and

[0011] The display component is disposed on the metal frame and covers the hollow hole.

[0012] Optionally, the alloy back plate includes an integrally formed base plate and several side plates, each of which is disposed around the base plate so that the side plates and the base plate together form a groove. The metal frame, the backlight module, and the display assembly are all located in the groove, and each of the buckle holes is located on the side plate.

[0013] Optionally, the metal frame includes an integrally formed bottom frame and several side frames, each of the side frames being disposed around the bottom frame, the hollow hole being located on the bottom frame, and each of the latching protrusions being located on the side frames.

[0014] Optionally, the display component includes double-sided tape and a display screen. The double-sided tape is disposed around the hollow hole on the bottom frame, and the display screen is disposed on the double-sided tape so that the display screen covers the hollow hole.

[0015] Optionally, the backlight module includes a light strip and a reflective sheet, a light guide plate, a diffusion film, a lower brightness enhancement sheet, and an upper brightness enhancement sheet stacked sequentially from bottom to top. The reflective sheet is disposed on the bottom plate portion, the upper brightness enhancement sheet abuts against the bottom frame portion, and the light strip is disposed on one of the side plates portion, with the light strip facing the light guide plate.

[0016] Optionally, the display component further includes a logic board and a flexible circuit board. The logic board is disposed on the outer side wall of the base plate. The flexible circuit board is electrically connected to the logic board and the display screen respectively. The light strip is electrically connected to the logic board.

[0017] Optionally, the ultra-narrow bezel automotive touch LCD display module further includes a light-shielding sleeve, which covers the four perimeters of the alloy back plate and is also attached to the outer side wall of the base plate to shield the logic board and the flexible circuit board. The light-shielding sleeve is also attached to a portion of the display screen structure.

[0018] Optionally, one of the side plates has a clearance groove, and a bending block is provided on the side frame near the clearance groove. The bending block is bent outward to cover the clearance groove, and the flexible circuit board is attached to the surface of the bending block.

[0019] Optionally, the bending block has at least one locking hole, and the side plate is provided with at least one locking platform at the position aligned with the bending block, with each locking platform corresponding to and engaging with each locking hole.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] This utility model discloses an ultra-narrow bezel automotive touchscreen LCD display module, comprising an alloy backplate, a metal frame, a backlight module, and a display component. The alloy backplate has several spaced-apart fastening holes on its sidewalls, and the metal frame has several spaced-apart latching protrusions on its sidewalls. The metal frame is fastened into the alloy backplate so that each latching protrusion corresponds to and engages with a fastening hole. A hollow hole is formed in the center of the metal frame. The backlight module is disposed on the inner bottom wall of the alloy backplate, abutting against the metal frame and aligned with the hollow hole. The display component is disposed on the metal frame and covers the hollow hole. Thus, by combining the metal frame and alloy backplate, the existing plastic frame structure is replaced, further reducing the width of the metal frame and ultimately further reducing the overall black border width of the display module. Furthermore, it eliminates the need to develop complex injection molds, thereby reducing the production costs associated with injection molds. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an ultra-narrow bezel automotive touch LCD display module according to one embodiment of the present invention;

[0024] Figure 2 for Figure 1 An exploded view of the ultra-narrow bezel automotive touch LCD display module shown.

[0025] Figure 3 for Figure 1 A partial cross-sectional schematic diagram of the ultra-narrow bezel automotive touch LCD display module shown;

[0026] Figure 4 This is a partial structural schematic diagram of the metal frame according to one embodiment of the present invention;

[0027] Figure 5 This is a partial structural diagram of the alloy back plate and metal frame according to one embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10. Ultra-narrow bezel automotive touch LCD display module; 100. Alloy backplate; 200. Metal frame; 300. Backlight module; 400. Display assembly; 121. Buckle hole; 500. Clip protrusion; 211. Hollow hole; 110. Base plate; 120. Side plate; 210. Base frame; 220. Side frame; 410. Double-sided tape; 420. Display screen; 310. Lamp strip; 320. Reflector; 330. Light guide plate; 340. Diffuser film; 350. Lower brightness enhancement film; 360. Upper brightness enhancement film; 430. Logic board; 440. Flexible circuit board; 600. Light shielding sleeve; 122. Air clearance groove; 230. Bending block; 231. Clip hole; 130. Clip platform. Detailed Implementation

[0030] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0031] like Figures 1 to 3 As shown, an ultra-narrow bezel automotive touch LCD display module 10 includes an alloy back plate 100, a metal frame 200, a backlight module 300, and a display component 400. The alloy back plate 100 has several spaced-apart fastening holes 121 on its sidewalls. The metal frame 200 has several spaced-apart protrusions 500 on its sidewalls. The metal frame 200 is fastened inside the alloy back plate 100 so that each protrusion 500 corresponds to and engages with each fastening hole 121. A hollow hole 211 is formed in the center of the metal frame 200. The backlight module 300 is disposed on the inner bottom wall of the alloy back plate 100 and abuts against the metal frame 200, and is aligned with the hollow hole 211. The display component 400 is disposed on the metal frame 200 and covers the hollow hole 211.

[0032] It should be noted that, compared to the plastic frame in the prior art, this application uses a metal frame 200, for example, stainless steel. This effectively overcomes the drawbacks of the plastic material in the prior art, reducing the width of the metal frame 200 while ensuring the structural strength of the assembly between the metal frame 200 and the alloy back plate 100. Furthermore, the alloy back plate 100 is made of aluminum alloy. Further, multiple snap holes 121 are formed on the alloy back plate 100 through a punching process, and multiple snap protrusions 500 are formed on the metal frame 200 through a stamping process. Thus, when the metal frame 200 is placed into the alloy back plate 100, each snap protrusion 500 engages and is fixed with each snap hole 121, thereby assembling and fixing the metal frame 200 and the alloy back plate 100. Furthermore, the backlight module 300, used to generate a stable planar light source, is installed within the alloy back plate 100. After the metal frame 200 is installed within the alloy back plate 100, the metal frame 200 also abuts and limits the backlight module 300, ensuring that the backlight module 300 is reliably installed within the alloy back plate 100. Furthermore, the display component 400 is installed on the metal frame 200. Thus, the planar light source generated by the backlight module 300 illuminates the display component 400 through the hollow hole 211, allowing the user to view the image on the display component 400. In this way, by combining the metal frame 200 with the alloy back plate 100, replacing the plastic frame structure in the prior art, the width of the metal frame 200 can be further reduced, ultimately further reducing the overall black border width of the display module. Moreover, it eliminates the need to develop complex injection molds, thus reducing the production costs associated with injection molds.

[0033] like Figure 2 and Figure 3 As shown, in one embodiment, the alloy back plate 100 includes an integrally formed bottom plate portion 110 and a plurality of side plate portions 120. Each side plate portion 120 is disposed around the bottom plate portion 110 so that each side plate portion 120 and the bottom plate portion 110 together form a groove. The metal frame 200, the backlight module 300, and the display component 400 are all located in the groove, and each buckle hole 121 is located on the side plate portion 120.

[0034] It should be noted that the alloy back plate 100 is formed by stamping an aluminum alloy plate formed by a bottom plate portion 110 and several side plate portions 120. Thus, the alloy back plate 100 with an integral molding structure has sufficient structural strength.

[0035] like Figures 2 to 4 As shown, in one embodiment, the metal frame 200 includes an integrally formed bottom frame portion 210 and a plurality of side frame portions 220. Each side frame portion 220 is respectively disposed around the bottom frame portion 210. The hollow hole 211 is located on the bottom frame portion 210, and each latching protrusion 500 is located on the side frame portion 220.

[0036] It should be noted that the metal frame 200 is formed by stamping a stainless steel plate formed by the bottom frame 210 and several side frame parts 220. Thus, the one-piece molded metal frame 200 has sufficient structural strength, and the overall structure formed by assembling the metal frame 200 and the alloy back plate 100 has sufficient structural strength.

[0037] like Figure 2 and Figure 3 As shown, in one embodiment, the display component 400 includes double-sided tape 410 and a display screen 420. The double-sided tape 410 is disposed on the bottom frame portion 210 around the hollow hole 211, and the display screen 420 is disposed on the double-sided tape 410 so that the display screen 420 covers the hollow hole 211.

[0038] It should be noted that the double-sided tape 410 is made of foam. This serves two purposes: firstly, it reliably adheres and fixes the display screen 420 to the bottom frame 210; secondly, because the foam double-sided tape 410 has a soft structure, it provides cushioning between the display screen 420 and the bottom frame 210, preventing scratches to the display screen 420. In one embodiment, the display screen 420 is a FOG screen.

[0039] like Figure 2 and Figure 3 As shown, in one embodiment, the backlight module 300 includes a light strip 310 and a reflective sheet 320, a light guide plate 330, a diffusion film 340, a lower brightness enhancement sheet 350, and an upper brightness enhancement sheet 360 stacked sequentially from bottom to top. The reflective sheet 320 is disposed on the bottom plate portion 110, the upper brightness enhancement sheet 360 abuts against the bottom frame portion 210, and the light strip 310 is disposed on one of the side plate portions 120, with the light strip 310 facing the light guide plate 330.

[0040] Thus, the point light source generated by the light strip 310 illuminates the light guide plate 330, and the light is reflected by the reflector 320 and re-enters the light guide plate 330, improving light utilization. Finally, the light passes through the diffuser 340, the lower brightener 350, and the upper brightener 360 to form a stable surface light source. The bottom frame 210 abuts against the upper brightener 360, ensuring that components such as the reflector 320, light guide plate 330, diffuser 340, lower brightener 350, and upper brightener 360 are stably fixed between the alloy back plate 100 and the metal frame 200, preventing the display module from falling out due to vibration when installed in a new energy vehicle.

[0041] like Figure 2As shown, in one embodiment, the display component 400 further includes a logic board 430 and a flexible circuit board 440. The logic board 430 is disposed on the outer side wall of the base plate portion 110. The flexible circuit board 440 is electrically connected to the logic board 430 and the display screen 420 respectively. The light strip 310 is electrically connected to the logic board 430.

[0042] It should be noted that the logic board 430, also known as the T-CON board, is mounted on the outer wall of the base plate 110, and is then electrically connected to the logic board 430 and the display screen 420 via a flexible circuit board 440. Furthermore, the LED strip 310 is electrically connected to the logic board 430.

[0043] like Figures 1 to 3 As shown, in one embodiment, the ultra-narrow bezel vehicle-mounted touch LCD display module 10 further includes a light-shielding sleeve 600, which covers the four periphery of the alloy back plate 100 and is also attached to the outer side wall of the bottom plate portion 110 to shield the logic board 430 and the flexible circuit board 440. The light-shielding sleeve 600 is also attached to part of the structure of the display screen 420.

[0044] It should be noted that the light-shielding sleeve 600 is made of Mylar film. The Mylar film has an EMI shielding film. The light-shielding sleeve 600 formed can not only block light and prevent light leakage, but also isolate electromagnetic interference to ensure the normal display of the ultra-narrow bezel automotive touch LCD display module 10.

[0045] like Figure 2 As shown, in one embodiment, a clearance groove 122 is provided on one of the side plate portions 120, and a bending block 230 is provided on the side frame portion 220 near the clearance groove 122. The bending block 230 is bent outward to cover the clearance groove 122, and the flexible circuit board 440 is attached to the surface of the bending block 230.

[0046] It should be noted that, in order for the flexible circuit board 440 to extend from the side plate portion 120 and the side frame portion 220 to connect with the logic board 430, a clearance groove 122 is provided on the side plate portion 120 at the corresponding position, and a bending block 230 is provided on the side frame portion 220 at the corresponding position. After bending the bending block 230 outward, the bending block 230 covers the clearance groove 122, and finally the flexible circuit board 440 is attached to the bending block 230 to be pulled out. In this way, the sharp sides of the clearance groove 122 can be prevented from scratching the flexible circuit board 440.

[0047] like Figure 5 As shown, in one embodiment, the bending block 230 is provided with at least one locking hole 231, and the side plate portion 120 is provided with at least one locking platform 130 at the position aligned with the bending block 230, and each locking platform 130 is engaged with each locking hole 231 in turn.

[0048] It should be noted that the card holder 130 is formed by a stamping process. Thus, when the metal frame 200 is fastened to the alloy back plate 100, the card holder 130 engages with the card hole 231, improving the stability of the bending block 230 and thereby improving the overall structural stability of the ultra-narrow bezel automotive touch LCD display module 10.

[0049] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An ultra-narrow bezel automotive touchscreen LCD display module, characterized in that, include: An alloy back plate, wherein a plurality of intermittently distributed buckle holes are provided on the side wall of the alloy back plate; A metal frame has several spaced-apart protrusions on its sidewalls. The metal frame is fastened inside the alloy back plate so that each of the protrusions corresponds to and engages with each of the fastening holes. A hollow hole is provided in the center of the metal frame. A backlight module is disposed on the inner bottom wall of the alloy back plate, and the backlight module abuts against the metal frame and is aligned with the hollow hole. and The display component is disposed on the metal frame and covers the hollow hole.

2. The ultra-narrow bezel automotive touch LCD display module according to claim 1, characterized in that, The alloy back plate includes an integrally formed base plate and several side plates. Each side plate is disposed around the base plate so that the side plates and the base plate together form a groove. The metal frame, the backlight module, and the display assembly are all located in the groove, and each buckle hole is located on the side plate.

3. The ultra-narrow bezel automotive touch LCD display module according to claim 2, characterized in that, The metal frame includes an integrally formed bottom frame and several side frames. Each side frame is disposed around the bottom frame. The hollow hole is located on the bottom frame, and each of the latching protrusions is located on the side frame.

4. The ultra-narrow bezel automotive touch LCD display module according to claim 3, characterized in that, The display component includes double-sided tape and a display screen. The double-sided tape is disposed around the hollow hole on the bottom frame, and the display screen is disposed on the double-sided tape so that the display screen covers the hollow hole.

5. The ultra-narrow bezel automotive touch LCD display module according to claim 4, characterized in that, The backlight module includes a light strip and a reflective sheet, a light guide plate, a diffuser film, a lower brightness enhancement film, and an upper brightness enhancement film stacked sequentially from bottom to top. The reflective sheet is disposed on the bottom plate, the upper brightness enhancement film abuts against the bottom frame, and the light strip is disposed on one of the side plates, with the light strip facing the light guide plate.

6. The ultra-narrow bezel automotive touch LCD display module according to claim 5, characterized in that, The display component also includes a logic board and a flexible circuit board. The logic board is disposed on the outer side wall of the base plate. The flexible circuit board is electrically connected to the logic board and the display screen respectively. The light strip is electrically connected to the logic board.

7. The ultra-narrow bezel automotive touch LCD display module according to claim 6, characterized in that, The ultra-narrow bezel automotive touch LCD display module also includes a light-shielding sleeve, which covers the four perimeters of the alloy back plate and is also attached to the outer side wall of the base plate to shield the logic board and the flexible circuit board. Furthermore, the light-shielding sleeve is also attached to a portion of the display screen structure.

8. The ultra-narrow bezel automotive touch LCD display module according to claim 6, characterized in that, One of the side panels has a clearance groove, and a bending block is provided on the side frame near the clearance groove. The bending block is bent outward to cover the clearance groove, and the flexible circuit board is attached to the surface of the bending block.

9. The ultra-narrow bezel automotive touch LCD display module according to claim 8, characterized in that, The bending block has at least one locking hole, and the side plate is provided with at least one locking platform at the position aligned with the bending block, with each locking platform corresponding to and engaging with each locking hole.

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