Cover plate facilitating assembly and alignment of backlight unit

Abstract

The utility model discloses a cover plate convenient to assemble and align a backlight unit, which comprises a VA (vertical alignment) area, non-VA areas are arranged on two sides of the VA area, a main body ink layer is arranged on the lower surface of each non-VA area, a cover bottom ink layer is arranged on the lower surface of each main body ink layer, and a cover bottom ink layer is arranged on the lower surface of each cover bottom ink layer. And a backlight alignment silk-screen printing ink layer is arranged on the lower surface of the cover bottom printing ink layer. The backlight alignment silk-screen printing ink layer is in a whole circle shape, the inner circle of the backlight alignment silk-screen printing ink layer is consistent with the appearance of the backlight unit, and the outer circle of the backlight alignment silk-screen printing ink layer is consistent with the appearance of the cover plate facilitating assembly and alignment of the backlight unit. The edge of the inner side of the backlight alignment silk-screen printing ink layer is aligned with the cover bottom printing ink layer, when the backlight unit is assembled, white silk-screen printing ink, namely the backlight alignment silk-screen printing ink layer, can be seen around after alignment, and meanwhile, if black cover bottom printing ink, namely the cover bottom printing ink layer, is not seen, the assembly is judged to be OK.

Description

Technical Field

[0001] The utility model relates to a cover plate of a display module, more specifically, to a cover plate which is convenient for assembling and aligning a backlight unit. Background Art

[0002] Most display modules are backlight display modules, which require a backlight unit to provide light for display. When the backlight unit is assembled on the LCD, it needs to be aligned with the silk screen line on the cover to ensure accurate assembly. The existing cover screen printing usually prints several sections of intermittent ink blocks, which is not convenient for alignment and QC inspection, and is prone to assembly deviation and missed inspection.

[0003] Chinese utility model patent document CN207415209U discloses a circular cover plate alignment fixture, comprising: a workbench, a seat, a cover and a bracket; the seat and the bracket are rotatably mounted on the workbench, the cover is movably connected to one end of the bracket and can telescopically move in the vertical direction, the cover is spaced apart from the workbench and a suction cup for adsorbing the circular cover is provided on the side of the cover close to the workbench, and a positioning magnet is embedded on the cover; the seat is located directly below the cover and can accommodate the shell, and a magnetic column is provided on the seat. When the seat rotates to the position where the magnetic column and the positioning magnet are adsorbed and matched, the seat and the cover are adsorbed and matched to achieve the matching of the circular cover and the shell. Among them, a hole is provided in the middle of the positioning magnet, and when adsorbed and fixed, the magnetic column is inserted into the hole of the positioning magnet. A shaft sleeve is provided in the middle of the seat, and the end of the bracket is exposed in the middle of the cover, and the end of the bracket can be sleeved in the shaft sleeve. The bracket is arranged in a bent shape, and a second spring is arranged on the bracket, the second spring is sleeved on the bracket and clamped between the bent part of the bracket and the cover body; a limit block is embedded in the middle of the cover body, and the limit block is sleeved on the end of the bracket. The seat body also includes a first spring, a connecting rod, a bearing and a driving member, one end of the connecting rod is fixed on the seat body, and the connecting rod is movably connected to the workbench through the bearing, the driving member is located at the other end of the connecting rod, the first spring is sleeved on the connecting rod and is located between the workbench and the driving member. There are multiple suction cups, and the multiple suction cups are evenly distributed on the side of the cover body close to the seat body.

[0004] Obviously, this patent utilizes the magnetic force of the base body and the cover body to realize the alignment of the cover plate and the shell, thereby improving the accuracy of the alignment. However, this structure cannot solve the existing assembly deviation problem. Utility Model Content

[0005] Based on this, it is necessary to provide a cover plate that is convenient for assembling and aligning the backlight unit in order to solve the above technical problems. The cover plate that is convenient for assembling and aligning the backlight unit includes a VA area, non-VA areas are provided on both sides of the VA area, a main ink layer is provided on the lower surface of the non-VA area, a cover bottom ink layer is provided on the lower surface of the main ink layer, and a backlight alignment silk-screen ink layer is provided on the lower surface of the cover bottom ink layer. The backlight alignment silk-screen ink layer is in the shape of a whole circle, the inner circle of the backlight alignment silk-screen ink layer is consistent with the shape of the backlight unit, and the outer circle of the backlight alignment silk-screen ink layer is consistent with the shape of the cover plate that is convenient for assembling and aligning the backlight unit. The inner edge of the backlight alignment silk-screen ink layer is aligned with the cover bottom ink layer. When the backlight unit is assembled, after alignment, white silk-screen ink, i.e., the backlight alignment silk-screen ink layer, can be seen on all sides. At the same time, if the black cover bottom ink, i.e., the cover bottom ink layer, is not visible, it is determined that the assembly is OK. After alignment, if the white ink is not visible around the periphery, but the black bottom cover ink is visible, it means that the assembly is misaligned. The cover plate that facilitates the assembly alignment of the backlight unit directly uses the black bottom cover ink layer, so that the tester can know whether the assembly is qualified with the naked eye, and the alignment is accurate, which greatly facilitates QC to check for misalignment.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A cover plate for facilitating assembly and alignment of a backlight unit, characterized in that the cover plate for facilitating assembly and alignment of a backlight unit comprises a VA area, non-VA areas are provided on both sides of the VA area, a main ink layer is provided on the lower surface of the non-VA area, a cover bottom ink layer is provided on the lower surface of the main ink layer, and a backlight alignment silk-screen ink layer is provided on the lower surface of the cover bottom ink layer.

[0008] As a preferred embodiment of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the backlight alignment silk-screen ink layer is in the shape of a full circle, the inner circle of the backlight alignment silk-screen ink layer is consistent with the shape of the backlight unit, and the outer circle of the backlight alignment silk-screen ink layer is consistent with the shape of the cover plate for facilitating assembly and alignment of the backlight unit.

[0009] As a preferred embodiment of the cover plate for facilitating the assembly and alignment of the backlight unit provided by the utility model, the inner edge of the backlight alignment silk-screen ink layer is aligned with the cover bottom ink layer.

[0010] As a preferred embodiment of the cover plate for facilitating the assembly and alignment of the backlight unit provided by the utility model, the backlight alignment silk-screen printing ink layer is white.

[0011] As a preferred implementation of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the non-VA area has a 2D arc structure.

[0012] As a preferred implementation of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the non-VA area has a 3D arc structure.

[0013] As a preferred embodiment of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the bottom cover ink layer is black.

[0014] As a preferred embodiment of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the distance between the cover bottom ink layer and the VA area is 0.3 mm to 0.5 mm.

[0015] As a preferred embodiment of the cover plate for facilitating assembly and alignment of the backlight unit provided by the utility model, the sum of the thickness of the main body ink layer and the cover bottom ink layer is less than 203 mm.

[0016] As a preferred embodiment of the cover plate for facilitating the assembly and alignment of the backlight unit provided by the utility model, the outer edge of the backlight alignment silk-screen ink layer is aligned with the cover bottom ink layer.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a cover plate that is convenient for assembling and aligning a backlight unit. When the backlight unit is assembled, after alignment, white silk-screen ink, i.e., the backlight alignment silk-screen ink layer, can be seen on all sides. Meanwhile, if the black cover bottom ink, i.e., the cover bottom ink layer, is not visible, it is determined that the assembly is OK. After alignment, if the white ink is not visible on the surrounding parts, but the black cover bottom ink is exposed, it indicates that the assembly is offset. The cover plate that is convenient for assembling and aligning a backlight unit directly uses the black cover bottom ink layer, so that the tester can know whether the assembly is qualified or not with the naked eye, and the alignment is accurate, which greatly facilitates the QC to check for bad offset.

[0019] In addition, the non-VA area may be in a 2D arc structure. Alternatively, the non-VA area may be in a 3D arc structure. The 2D arc structure or 3D arc structure of the non-VA area may further enhance the comfort of holding the cover.

[0020] In addition, the outer edge of the backlight alignment silk-printed ink layer can be aligned with the cover bottom ink layer. When the backlight unit is assembled, after alignment, white silk-printed ink, i.e., the backlight alignment silk-printed ink layer, can be seen on all sides. At the same time, if the black cover bottom ink, i.e., the cover bottom ink layer, is not visible, it is determined that the assembly is OK. If the white ink is not visible on the surrounding parts, but the black cover bottom ink is exposed, it means that the assembly is offset. Since the outer edge of the backlight alignment silk-printed ink layer is aligned with the cover bottom ink layer, the area of ​​the non-VA area that obtains the backlight can be expanded, thereby improving the brightness of the non-VA area. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] FIG1 is a schematic structural diagram of a cover plate for facilitating assembly and alignment of a backlight unit according to the present invention;

[0023] FIG2 is a schematic structural diagram of a cover plate for facilitating assembly and alignment of a backlight unit in FIG1 , from another viewing angle;

[0024] Figure 3 The schematic diagram of the assembly of the cover plate and the backlight unit for facilitating the assembly alignment of the backlight unit in FIG. 1 , at this time, the assembly position is correct;

[0025] Figure 4 for Figure 3 A detailed enlarged schematic diagram of area A of the assembly diagram of the cover plate for facilitating the assembly alignment of the backlight unit and the backlight unit;

[0026] Figure 5 The schematic diagram of the assembly of the cover plate and the backlight unit for facilitating the assembly alignment of the backlight unit in FIG. 1 , wherein the assembly position is offset;

[0027] Figure 6 for Figure 5 A detailed enlarged schematic diagram of area B of the assembly schematic diagram of the cover plate for facilitating the assembly alignment of the backlight unit and the backlight unit;

[0028] Figure 7 It is a structural schematic diagram of another embodiment of the cover plate for facilitating the assembly and alignment of the backlight unit of the utility model;

[0029] The markings in the figure are as follows: 1. Cover plate for facilitating assembly and alignment of the backlight unit; 11. VA area; 12. Non-VA area; 13. Main body ink layer; 14. Cover bottom ink layer; 15. Backlight alignment silk-screen ink layer. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0031] As described in the background technology, in the prior art, for display modules, most display modules are backlight display modules, which require a backlight to provide light source for display. When the backlight is assembled on the LCD, it needs to be aligned with the silk screen line on the cover plate to ensure accurate assembly. As shown in Figure 1, the existing cover plate silk screen usually prints several sections of intermittent ink blocks, which is not convenient for alignment and QC inspection, and is prone to assembly deviation and missed inspection.

[0032] In order to solve this technical problem, the utility model provides a cover plate 1 that is convenient for assembling and aligning a backlight unit, comprising a VA area 11, non-VA areas 12 are provided on both sides of the VA area 11, a main body ink layer 13 is provided on the lower surface of the non-VA area 12, a cover bottom ink layer 14 is provided on the lower surface of the main body ink layer 13, and a backlight alignment silk-screen ink layer 15 is provided on the lower surface of the cover bottom ink layer 14. The backlight alignment silk-screen ink layer 15 is in a full circle shape, the inner circle of the backlight alignment silk-screen ink layer 15 is consistent with the shape of the backlight unit, and the outer circle of the backlight alignment silk-screen ink layer 15 is consistent with the shape of the cover plate 1 that is convenient for assembling and aligning a backlight unit. The inner edge of the backlight alignment silk-screen ink layer 15 is aligned with the cover bottom ink layer 14. The backlight alignment silk-screen ink layer 15 is white.

[0033] Through the above structural design, when the backlight unit is assembled, after alignment, white silk-screen ink, i.e., the backlight alignment silk-screen ink layer 15, can be seen on all sides. At the same time, if the black cover bottom ink, i.e., the cover bottom ink layer 14, is not visible, it is determined that the assembly is OK. After alignment, if the white ink is not visible on the surrounding parts, but the black cover bottom ink is exposed, it means that the assembly is offset. The cover plate that facilitates the assembly alignment of the backlight unit directly uses the black cover bottom ink layer 14, so that the tester can understand whether the assembly is qualified with the naked eye, and the alignment is accurate, which greatly facilitates QC to check for bad offset.

[0034] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Example 1

[0038] As shown in Figures 1 and 2, the cover plate 1 for facilitating the assembly and alignment of the backlight unit includes a VA area 11, non-VA areas 12 are provided on both sides of the VA area 11, a main ink layer 13 is provided on the lower surface of the non-VA area 12, a cover bottom ink layer 14 is provided on the lower surface of the main ink layer 13, and a backlight alignment silk-screen ink layer 15 is provided on the lower surface of the cover bottom ink layer 14.

[0039] It should be noted that the backlight alignment silk-printed ink layer 15 is in a full circle shape, the inner circle of the backlight alignment silk-printed ink layer 15 is consistent with the shape of the backlight unit, and the outer circle of the backlight alignment silk-printed ink layer 15 is consistent with the shape of the cover plate 1 for facilitating the assembly and alignment of the backlight unit.

[0040] In addition, the inner edge of the backlight alignment silk-printed ink layer 15 is aligned with the cover bottom ink layer 14. The backlight alignment silk-printed ink layer 15 is white.

[0041] In addition, the cover bottom ink layer 14 is black. The cover bottom ink layer 14 is 0.3 mm to 0.5 mm away from the VA area 11. The sum of the thickness of the main body ink layer 13 and the cover bottom ink layer 14 is less than 203 mm.

[0042] The working mode of this embodiment is described below.

[0043] like Figure 3 and Figure 4 As shown, when the backlight unit is assembled, after alignment, white silk screen ink, i.e., the backlight alignment silk screen ink layer 15, can be seen all around, and at the same time, if the black cover ink, i.e., the cover ink layer 14, is not visible, it is determined that the assembly is OK.

[0044] like Figure 5 and Figure 6As shown, after alignment, if the white ink is not visible in the surrounding area, but the black bottom cover ink is visible, it means that the assembly is misaligned.

[0045] The cover plate that facilitates the assembly and alignment of the backlight unit directly uses the black bottom cover ink layer 14, so that the tester can know whether the assembly is qualified and the alignment is accurate through the naked eye, which greatly facilitates the QC to check for misalignment.

[0046] Example 2

[0047] The cover plate provided in Embodiment 1 for facilitating the assembly and alignment of the backlight unit is further optimized. Specifically, the non-VA area 12 is in a 2D arc-shaped structure. Alternatively, the non-VA area 12 is in a 3D arc-shaped structure.

[0048] The working mode of this embodiment is described below.

[0049] By utilizing the 2D arc structure or 3D arc structure of the non-VA area 12, the comfort of holding the cover can be further enhanced.

[0050] Example 3

[0051] like Figure 7 As shown, the cover plate provided in Example 1 or 2 for facilitating the assembly and alignment of the backlight unit is further optimized. Specifically, the outer edge of the backlight alignment silk-screen ink layer 15 is aligned with the cover bottom ink layer 14 .

[0052] The working mode of this embodiment is described below.

[0053] When assembling the backlight unit, after alignment, white silk-screen ink, i.e., the backlight alignment silk-screen ink layer 15, can be seen on all sides. At the same time, if the black cover ink, i.e., the cover ink layer 14, cannot be seen, then it is determined that the assembly is OK. If the white ink cannot be seen on the surrounding parts, but the black cover ink is exposed, then it indicates that the assembly is offset. Since the outer edge of the backlight alignment silk-screen ink layer 15 is aligned with the cover ink layer 14, the area of ​​the non-VA area 12 that receives the backlight can be expanded, thereby improving the brightness of the non-VA area 12.

[0054] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A cover plate for facilitating the assembly and alignment of a backlight unit, characterized in that: The cover plate (1) for facilitating assembly and alignment of a backlight unit comprises a VA area (11), non-VA areas (12) are provided on both sides of the VA area (11), a main body ink layer (13) is provided on the lower surface of the non-VA area (12), a cover bottom ink layer (14) is provided on the lower surface of the main body ink layer (13), and a backlight alignment silk-screen ink layer (15) is provided on the lower surface of the cover bottom ink layer (14).

2. The cover plate for facilitating assembly and alignment of the backlight unit according to claim 1, characterized in that: The backlight alignment silk-printed ink layer (15) is in the shape of a full circle, the inner circle of the backlight alignment silk-printed ink layer (15) is consistent with the shape of the backlight unit, and the outer circle of the backlight alignment silk-printed ink layer (15) is consistent with the shape of the cover plate (1) that facilitates the assembly and alignment of the backlight unit.

3. The cover plate for facilitating assembly and alignment of the backlight unit according to claim 1, characterized in that: The inner edge of the backlight alignment silk-screen ink layer (15) is aligned with the cover bottom ink layer (14).

4. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The backlight alignment silk screen printing ink layer (15) is white.

5. The cover plate for facilitating assembly and alignment of the backlight unit according to claim 1, characterized in that: The non-VA region (12) has a 2D arc-shaped structure.

6. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The non-VA area (12) has a 3D arc-shaped structure.

7. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The cover bottom ink layer (14) is black.

8. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The bottom cover ink layer (14) is 0.3 mm to 0.5 mm away from the VA area (11).

9. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The sum of the thicknesses of the main body ink layer (13) and the cover bottom ink layer (14) is less than 203 mm.

10. The cover plate for facilitating assembly and alignment of a backlight unit according to claim 1, characterized in that: The outer edge of the backlight alignment silk-screen ink layer (15) is aligned with the cover bottom ink layer (14).

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