Tool for testing black state uniformity of curved screen

Abstract

The utility model discloses a tool for testing black state uniformity of a curved screen, and relates to the technical field of display module testing tools, the tool for testing black state uniformity of the curved screen comprises a base, one end face of the base is provided with an accommodating cavity; the backlight plate is arranged in the accommodating cavity; the baffle is arranged at the end, provided with the containing cavity, of the base, a first light transmitting opening is formed in the baffle, and light generated by the backlight plate is transmitted to the end face, opposite to the base, of the baffle through the first light transmitting opening; the baffle is arranged on the base, the profiling plate is arranged on the end face, opposite to the base, of the baffle, a second light-transmitting opening is formed in the middle of the profiling plate, a profiling area is arranged on the end face, opposite to the baffle, of the profiling plate, and the panel body is aligned to the second light-transmitting opening. The base and the backlight plate are reserved after being used, the utilization rate is high, operation is easy and rapid, and the black uniformity of display screens with different curvatures can be rapidly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen test tooling, and particularly relates to a test tooling for the black state uniformity of a curved screen. Background Art

[0002] The existing curved screen includes a curved glass cover plate, optical film pieces, a backlight plate with the same bending curvature as the glass cover plate, and a middle frame and a back plate for carrying these components. When evaluating the requirements of customers for the black state uniformity of curved screen products, since different customers have customized curved screens with different specification requirements, it is necessary to design a backlight plate corresponding to its bending curvature, and bond and assemble the glass cover plate, optical film pieces, backlight plate, middle frame and back plate through water glue, structural glue, etc. However, the design and processing cycle of the backlight plate is long, the bonding and assembly process is complex, and the detection cycle will also be particularly long. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a test tooling for the black state uniformity of a curved screen, aiming to quickly detect the black state uniformity of display panels with different bending curvatures without the need for additional processing and design of the backlight and module bonding and assembly processes adapted to the panel curvature, greatly saving material costs and the detection cycle.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] A test tooling for the black state uniformity of a curved screen, which is used for placing a curved screen panel. The curved screen panel includes a panel body and a curved cover plate. A flexible circuit board is arranged on the panel body. The curved cover plate includes a display area and a support edge. The panel body is attached to one end face of the display area. The test tooling for the black state uniformity of the curved screen includes:

[0006] A base, and a receiving cavity is formed on one end face of the base;

[0007] A backlight plate, which is arranged inside the receiving cavity;

[0008] A baffle, which is arranged at the end of the base where the receiving cavity is formed. A first light-transmitting opening is formed on the baffle. The light generated by the backlight plate is transmitted to the end face of the baffle opposite to the base through the first light-transmitting opening;

[0009] The profiling plate is arranged on the end face of the baffle plate opposite to the base. A second light-transmitting opening is formed in the middle of the profiling plate. A profiling area is arranged on the end face of the profiling plate opposite to the baffle plate. The panel body is aligned with the second light-transmitting opening. The light generated by the backlight plate is transmitted through the first light-transmitting opening and the second light-transmitting opening in sequence and irradiates on the panel body. The curved surface cover plate is placed in the profiling area, and the profiling area is adapted to the shape of the curved surface cover plate.

[0010] Optionally, a clearance angle is formed on the base. The cross-section of the accommodating cavity along the length direction is rectangular, and the clearance angles are arranged at the four corners of the accommodating cavity.

[0011] Optionally, a groove is formed on the base. The groove communicates with the accommodating cavity. The groove has a top end in the height direction, and the top end of the groove is flush with the top end of the accommodating cavity. The depth of the groove is greater than the depth of the accommodating cavity.

[0012] Optionally, a first avoidance groove and an avoidance hole are formed on the base. The depths of the first avoidance groove and the avoidance hole are greater than the depth of the accommodating cavity.

[0013] Optionally, a limiting post is arranged at the open end of the base. Limiting holes are respectively formed on the baffle plate and the profiling plate. The limiting post passes through the limiting hole on the baffle plate and is inserted into the limiting hole on the profiling plate.

[0014] Optionally, support feet are arranged on the end face of the base opposite to the baffle plate.

[0015] Optionally, a through hole is formed on the baffle plate, and a threaded hole is formed on the base corresponding to the through hole. A screw passes through the through hole and is screwed into the threaded hole to fix the baffle plate on the base.

[0016] Optionally, the length of the first light-transmitting opening is less than the length of the opening, and the width of the first light-transmitting opening is less than the width of the opening.

[0017] Optionally, a profiling groove is formed in the profiling area. The profiling groove communicates with the second light-transmitting opening, and the bending curvature of the profiling groove is the same as that of the curved surface cover plate.

[0018] Optionally, the flexible circuit board is connected to the panel body. A second avoidance groove is formed on the profiling plate, and the flexible circuit board is located in the second avoidance groove.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the technical solution of the present utility model, by separating the backlight panel from the panel body and the curved surface cover plate, and placing the backlight panel in the base, when testing curved surface screens with different curvatures, the backlight panel does not need to be replaced. Therefore, there is no need for re - design either. Only the curved surface screen panel and the profiling plate adapted to its shape need to be replaced. There is no need to additionally design and process a matching backlight module and corresponding bonding and assembly processes. During use, install the backlight panel in the accommodation cavity, install the baffle on the base, use the baffle to press the backlight panel to prevent it from moving, place the profiling plate on the baffle, align the second light - transmitting port with the first light - transmitting port, then place the curved surface screen panel in the profiling area, align the panel body with the second light - transmitting port, connect the backlight panel to the circuit, and then the testing can start. There is no need to process and design a backlight adapted to the curvature and complex bonding and assembly processes. Since the backlight panel does not need to be replaced, that is, the base and the backlight panel have universality, the utilization rate of the backlight panel is improved. The operation is simple and fast, and the black uniformity of display screens with different curvatures can be quickly detected. At the same time, the utilization rate of the base for carrying the backlight panel is also improved, solving the problems in the prior art that a complete display module needs to be made by processing and designing a backlight adapted to the curvature and complex bonding and assembly processes for testing, resulting in high costs and long production cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an embodiment of the testing tooling of the present utility model;

[0022] Figure 2 is an exploded view of an embodiment of the testing tooling of the present utility model;

[0023] Figure 3 is Figure 1 a cross - sectional view taken along A - A in

[0024] Figure 4 is Figure 2 an enlarged view of part B in

[0025] Figure 5 is Figure 3 an enlarged view of part C in

[0026] Explanation of the reference numerals in the drawings: 1. Base; 101. Accommodation cavity; 102. Opening; 103. Groove; 104. First avoidance groove; 105. Avoidance hole; 2. Backlight panel; 3. Baffle; 301. First light - transmitting port; 302. Through - hole; 4. Profiling plate; 401. Second light - transmitting port; 402. Profiling area; 403. Profiling groove; 404. Second avoidance groove; 5. Curved surface display panel; 501. Panel body; 5011. Flexible circuit board; 502. Curved surface cover plate; 5021. Display area; 5022. Support edge; 6. Limit post; 7. Support foot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The present invention provides a test tool for the black state uniformity of a curved screen.

[0032] Refer to Figures 1 - 5, the curved screen black state uniformity test tooling provided by the embodiment of the present utility model is used to place the curved screen panel 5. The curved screen panel 5 includes a panel body 501 and a curved cover plate 502. A flexible circuit board 5011 is provided on the panel body 501. The curved cover plate 502 includes a display area 5021 and a support edge 5022. The panel body 501 is attached to one end face of the display area 5021. The curved screen black state uniformity test tooling includes: a base 1, and a receiving cavity 101 is opened on one end face of the base 1; a backlight plate 2, and the backlight plate 2 is arranged inside the receiving cavity 101; a baffle 3, and the baffle 3 is arranged at one end of the base 1 where the receiving cavity 101 is opened. A first light-transmitting opening 301 is opened on the baffle 3. The light generated by the backlight plate 2 is transmitted to the end face of the baffle 3 opposite to the base 1 through the first light-transmitting opening 301; a profiling plate 4, and the profiling plate 4 is arranged on the end face of the baffle 3 opposite to the base 1. A second light-transmitting opening 401 is opened in the middle of the profiling plate 4. A profiling area 402 is arranged on the end face of the profiling plate 3 opposite to the baffle 3. The panel body 501 is aligned with the second light-transmitting opening 401. The light generated by the backlight plate 2 is sequentially transmitted through the first light-transmitting opening 301 and the second light-transmitting opening 401 and irradiates on the panel body 501. The curved cover plate 502 is placed in the profiling area 402, and the profiling area 402 is adapted to the shape of the curved cover plate 502.

[0033] In the technical solution of the present utility model, by separating the backlight plate 2 from the panel body 501 and the curved cover plate 502 and placing the backlight plate 2 inside the base 1, when testing curved screens with different curvatures, the backlight plate 2 does not need to be replaced. Therefore, there is no need for re-design either. Only the curved screen panel 5 and the profiling plate 4 adapted to its shape need to be replaced. During use, the backlight plate 2 is installed in the receiving cavity 101, the baffle 3 is installed on the base 1, and the baffle 3 is used to press the backlight plate 2 to prevent it from moving. The profiling plate 4 is placed on the baffle 3 so that the second light-transmitting opening 401 is aligned with the first light-transmitting opening 301. Then the curved screen panel 5 is placed in the profiling area 402 so that the panel body 501 is aligned with the second light-transmitting opening 401. The backlight plate 2 is connected to the circuit, and the test can be started. Since the backlight plate 2 does not need to be replaced, that is, the backlight plate 2 has universality. Therefore, the utilization rate of the backlight plate 2 is improved. At the same time, the utilization rate of the base 1 for carrying the backlight plate 2 is also improved. The base 1 replaces the backplane, and there is no need to re-design the backplane corresponding to the curved screen. There is no need to process and design a backlight plate 2 with an adapted curvature and a complex bonding and assembly process to make a complete display module.

[0034] Refer to Figure 2 and Figure 4 , in an embodiment of the present utility model, clearance angles 102 are opened on the base 1. The cross-section of the receiving cavity 101 along the length direction is rectangular, and the clearance angles 102 are arranged at the four corners of the receiving cavity 101.

[0035] In the technical solution of the present utility model, since the four corners of the backlight panel 2 are usually sharp right-angled shapes, the clearance angles 102 can avoid the sharp four corners of the backlight panel 2, preventing the four corners of the backlight panel 2 from directly contacting the base 1 and causing wear at the four corners of the backlight panel 2.

[0036] Refer to Figure 2 and Figure 4 In an embodiment of the present utility model, a groove 103 is formed in the base 1. The groove 103 communicates with the receiving cavity 101. The groove 103 has a top end in the height direction. The top end of the groove 103 is flush with the top end of the receiving cavity 101. The depth of the groove 103 is greater than the depth of the receiving cavity 101.

[0037] In the technical solution of the present utility model, since the backlight panel 2 is placed in the receiving cavity 101, to ensure that the backlight panel 2 does not move in the receiving cavity 101, the side surface of the backlight panel 2 is attached to the side wall of the receiving cavity 101. In this way, it is rather inconvenient to take out the backlight panel 2. To facilitate taking out the backlight panel 2, a groove 103 is formed in the base 1. When taking out the backlight panel 2, insert a finger into the groove 103 and pinch the backlight panel 2 to take out the backlight panel 2.

[0038] Refer to Figure 2 In an embodiment of the present utility model, a first relief groove 104 and a relief hole 105 are formed in the base 1. The depths of the first relief groove 104 and the relief hole 105 are greater than the depth of the receiving cavity 101.

[0039] In the technical solution of the present utility model, since studs and connectors are usually provided on one end surface of the backlight panel 2 facing away from the light-emitting surface, to reduce the influence of their existence on the backlight panel 2, the connectors of the backlight panel 2 are arranged in the first relief groove 104, and the studs are arranged in the relief holes 105, reducing their influence on the backlight panel 2 and preventing the installation of the backlight panel 2 from being unstable due to the existence of the studs and connectors.

[0040] Refer to Figure 2 and Figure 4 In an embodiment of the present utility model, a limiting post 6 is provided at one end of the base 1 where the opening 102 is formed. Limiting holes 7 are respectively formed in the baffle 3 and the profiling plate 4. The limiting post 6 passes through the limiting hole 7 in the baffle 3 and is inserted into the limiting hole 7 in the profiling plate 4.

[0041] In the technical solution of the present utility model, during installation, the limiting post 7 is made to pass through the limiting hole 7 in the baffle 3 and the limiting hole 7 in the profiling plate 4 in sequence, using the limiting post 6 to limit the baffle 3 and the profiling plate 4 to prevent unnecessary shaking of the baffle 3 and the profiling plate 4.

[0042] Refer to Figure 2 In an embodiment of the present utility model, support feet 7 are provided on the end surface of the base 1 opposite to the baffle 3.

[0043] In the technical solution of the present utility model, by providing the support feet 7, the presence of the support feet 7 can support the base 1.

[0044] Refer to Figure 2 and Figure 4 In an embodiment of the present utility model, a through hole 302 is formed in the baffle 3, and a threaded hole 106 is formed in the base 1 corresponding to the through hole 302. A screw passes through the through hole 302 and is screwed into the threaded hole 106 to fix the baffle 3 on the base 1.

[0045] In the technical solution of the present utility model, through the above technical solution, during use, the screw sequentially passes through the through hole 302 and the threaded hole 16, and the baffle 3 is fixed on the base 1 by the screw, the through hole 302 and the threaded hole 106. The baffle 3 presses the backlight plate 2 so that it will not warp.

[0046] Refer to Figure 3 and Figure 4 In an embodiment of the present utility model, the length of the first light-transmitting opening 301 is less than the length of the opening 102, and the width of the first light-transmitting opening 301 is less than the width of the opening 102.

[0047] In the technical solution of the present utility model, since the length and width of the first light-transmitting opening 301 are less than the length and width of the opening 102, in this way, the baffle 3 can press the backlight plate 2 so that it will not warp.

[0048] Refer to Figure 3 and Figure 5 In an embodiment of the present utility model, a profiling groove 403 is formed in the profiling area 402. The profiling groove 403 communicates with the second light-transmitting opening 401, and the profiling groove 403 has the same bending curvature as the curved surface cover plate 502.

[0049] In the technical solution of the present utility model, during use, the curved screen panel 5 is placed in the profiling groove 403, and the curved screen panel 5 can be clamped in the profiling groove 403 to prevent shaking.

[0050] Refer to Figure 2 In an embodiment of the present utility model, the flexible circuit board 5011 is connected to the panel body 501, and a second avoidance groove 404 is formed in the profiling plate 4. The flexible circuit board 5011 is located in the second avoidance groove 404.

[0051] In the technical solution of the present utility model, during use, the flexible circuit board 5011 is placed in the second avoidance groove 404 to reduce the influence of its presence on the placement of the curved screen panel 5.

[0052] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. A testing tool for the black state uniformity of a curved screen, which is used to place a curved screen panel. The curved screen panel includes a panel body and a curved cover plate. A flexible circuit board is arranged on the panel body. The curved cover plate includes a display area and a support edge. The panel body is attached to one end face of the display area. It is characterized in that, The testing tool for the black state uniformity of the curved screen includes: A base, one end face of which is provided with a receiving cavity; A backlight plate, which is arranged inside the receiving cavity; A baffle, which is arranged at the end of the base where the receiving cavity is provided. The baffle is provided with a first light-transmitting opening, and the light generated by the backlight plate is transmitted through the first light-transmitting opening to the end face of the baffle opposite to the base; A profiling plate, which is arranged on the end face of the baffle opposite to the base. A second light-transmitting opening is provided in the middle of the profiling plate. A profiling area is provided on the end face of the profiling plate opposite to the baffle. The panel body is aligned with the second light-transmitting opening. The light generated by the backlight plate is sequentially transmitted through the first light-transmitting opening and the second light-transmitting opening and irradiates on the panel body. The curved surface cover plate is placed in the profiling area, and the profiling area is adapted to the shape of the curved surface cover plate.

2. The curved screen black state uniformity test tooling according to claim 1, characterized in that A clearance angle is provided on the base. The cross-section of the receiving cavity along the length direction is rectangular, and the clearance angles are provided at the four corners of the receiving cavity.

3. The curved screen black state uniformity test tooling according to claim 1, characterized in that A groove is provided on the base, and the groove communicates with the receiving cavity. The groove has a top end in the height direction, and the top end of the groove is flush with the top end of the receiving cavity. The depth of the groove is greater than the depth of the receiving cavity.

4. The curved screen black state uniformity test tooling according to claim 1, characterized in that, A first relief groove and a relief hole are provided on the base, and the depths of the first relief groove and the relief hole are greater than the depth of the receiving cavity.

5. The curved screen black state uniformity test tooling according to claim 1, characterized in that A limiting post is provided at the open end of the base. Limiting holes are respectively provided on the baffle and the profiling plate. The limiting post passes through the limiting hole on the baffle and is inserted into the limiting hole on the profiling plate.

6. The curved screen black state uniformity test tooling according to claim 1, wherein Support feet are provided on the end face of the base opposite to the baffle.

7. The curved screen black state uniformity test tooling according to claim 1, wherein A through hole is provided on the baffle, and a threaded hole is provided on the base corresponding to the through hole. A screw passes through the through hole and is screwed into the threaded hole to fix the baffle on the base.

8. The curved screen black state uniformity test tooling according to claim 5, characterized in that, The length of the first light-transmitting opening is less than the length of the opening, and the width of the first light-transmitting opening is less than the width of the opening.

9. The curved screen black state uniformity test tooling according to claim 1, characterized in that, A profiling groove is provided in the profiling area, and the profiling groove communicates with the second light-transmitting opening. The profiling groove has the same bending curvature as the curved surface cover plate.

10. The curved screen black state uniformity test tooling according to claim 1, wherein The flexible circuit board is connected to the panel body. A second relief groove is provided on the profiling plate, and the flexible circuit board is located in the second relief groove.

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