LCD (liquid crystal display) edge light leakage detection equipment

Abstract

The invention belongs to the technical field of display screen light leakage detection, and discloses LCD display screen edge light leakage detection equipment which comprises a base, a movable workbench is arranged on the base, and the upper end face of the workbench is an inwards-concave arc-shaped face; a supporting column is fixed to the base, a sliding groove is formed in the supporting column, a third threaded rod is rotationally connected into the sliding groove, a sliding block is in threaded connection with the third threaded rod, the sliding block is slidably connected into the sliding groove, a transverse plate is fixed to the sliding block, a notch is formed in the end, away from the sliding block, of the transverse plate, and a connecting block is rotationally connected into the notch. A sliding rod in sliding connection penetrates through the connecting block, a support is fixed to the lower end of the sliding rod, two guide wheels are rotationally connected to the inner side of the lower end of the support, a check block is fixed to the sliding rod, a spring is arranged on the sliding rod between the connecting block and the check block in a sleeving mode, a fixing piece is fixed to the side wall of the sliding rod, and a microscope is fixed to the fixing piece. When the display screen is moved, the microscope can deflect, so that the microscope is always perpendicular to the display screen as far as possible.

Description

Technical Field

[0001] The invention belongs to the technical field of display screen light leakage detection, and in particular relates to a device for detecting light leakage at the edge of an LCD display screen. Background Art

[0002] LCD screens can be mainly divided into VA area (Visual Area), AA area (Active Area) and BM area (Black Matrix). VA visual area refers to all visible parts on the LCD panel, and AA active area refers to the part that can be programmed to control the display. Therefore, VA area>AA area, and BM area is located at the outermost part of VA, which is the common black edge of the screen. The function of BM area is to prevent light leakage and prevent the light from the internal backlight from leaking out from the edge of the LCD screen. In the past, it was manually detected through a microscope. Since the angle of the microscope remains unchanged, when it is necessary to detect a curved screen, if the screen is fixed, the microscope cannot always maintain a vertical relationship with the screen when the screen is moved. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a device for detecting light leakage at the edge of an LCD display screen. When the device is detecting a curved display screen, when the display screen is moved, a microscope can be deflected so that the microscope is always kept as vertical as possible to the display screen.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A light leakage detection device for edge of LCD display screen, comprising a base, wherein the upper end of the base is fixedly connected with a first moving seat, the two ends of the first moving seat are fixedly connected with first fixing plates, a first threaded rod is rotatably connected between the two first fixing plates, a first moving block is threadedly connected on the first threaded rod, a second moving seat is fixedly connected with the upper end of the first moving block, the two ends of the second moving seat are fixedly connected with a second fixing plate, a second threaded rod is rotatably connected between the two second fixing plates, a second threaded rod is threadedly connected with the second moving block, a workbench is fixedly connected with the upper end of the second moving block, and the upper end surface of the workbench is a concave arc surface;

[0006] The cam is provided with a third threaded rod, and the third threaded rod is threadedly connected to a slider, and the slider is slidably connected to the slider. A cross plate is fixedly connected to the slider, and a notch is provided on the cross plate at one end away from the slider, and a connecting block is rotatably connected to the notch. The connecting block passes through a sliding rod slidably connected to the sliding rod, and the lower end of the sliding rod is fixedly connected to a bracket, and the lower end of the bracket is rotatably connected to two guide wheels. The sliding rod is fixedly connected to a block, and a spring is sleeved on the sliding rod between the connecting block and the block. A fixing piece is fixedly connected to the side wall of the sliding rod, and the fixing piece is fixedly connected to a microscope.

[0007] In a preferred example, the present invention can be further configured as follows: first guide rods are arranged on both sides of the first threaded rod, the first guide rods are arranged parallel to the first threaded rod, the first guide rods pass through the first moving block so that the first guide rods are slidably connected to the first moving block, and the two ends of the first guide rods are fixedly connected to the first fixed plate.

[0008] In a preferred example, the present invention may be further configured as follows: one end of the first threaded rod is fixedly connected to a first rotating member.

[0009] In a preferred example, the present invention can be further configured as follows: second guide rods are arranged on both sides of the second threaded rod, the second guide rods are arranged parallel to the second threaded rod, the second guide rods pass through the second moving block so that the second guide rods are slidably connected to the second moving block, and the two ends of the second guide rods are fixedly connected to the second fixed plate.

[0010] In a preferred example, the present invention may be further configured as follows: one end of the second threaded rod is fixedly connected to a second rotating member.

[0011] In a preferred example, the present invention can be further configured as follows: a notch is opened on the support column at the lower end of the slide groove, a first bevel gear is arranged in the notch, the first bevel gear is fixedly connected to the lower end of the third threaded rod, a second bevel gear is meshingly connected to the circumferential side of the first bevel gear, a rotating shaft is fixedly connected to the second bevel gear, the rotating shaft passes through the support column so that the rotating shaft is rotatably connected to the support column.

[0012] In a preferred example, the present invention can be further configured as follows: one end of the rotating shaft is fixedly connected to a third rotating member.

[0013] In a preferred example, the present invention can be further configured as follows: the sliding rod is a square rod, and the connecting block is provided with a square hole matched with the sliding rod.

[0014] In a preferred example, the present invention can be further configured as follows: a first air hole is opened inside the workbench along its length direction, one end of the first air hole is a closed end, and the other end is an open end; a plurality of second air holes are opened vertically on the workbench, the upper and lower ends of the second air holes are both open ends, and the lower end of the second air hole is communicated with the first air hole.

[0015] In a preferred example, the present invention may be further configured as follows: an interface is provided at the opening end of the first air hole.

[0016] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0017] Fixed connection refers to a connection in which parts or components are fixed without any relative movement. There are two types of connection: detachable and non-detachable.

[0018] (1) A removable connection is a connection that uses screws, splines, wedge pins, etc. to hold parts together. This type of connection can be disassembled for maintenance without damaging the parts. However, the specifications of the connectors used must be correct (such as the length of the bolts, keys, and wedge pins) and they must be properly tightened.

[0019] (2) Non-detachable connections mainly refer to welding, riveting and tenoning. Since they need to be disassembled by forging, sawing or oxygen cutting for maintenance or replacement, spare parts generally cannot be reused. At the same time, when making connections, attention should be paid to process quality, technical inspection and remedial measures (such as calibration, polishing, etc.).

[0020] A threaded connection refers to a detachable connection in which the connected parts are connected together using threaded parts (or the threaded parts of the connected parts).

[0021] A sliding connection is when two objects are in contact but not fixed and can slide relative to each other.

[0022] A rotational connection is a connection between parts that allows the parts to rotate relative to each other.

[0023] Beneficial effects of the present invention:

[0024] In the present application, when the device is detecting a curved display screen, when the display screen is moved, the microscope can be deflected so that the microscope is always kept as vertical as possible with the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 is a partial structural schematic diagram of a base according to an embodiment of the present invention;

[0028] Figure 3 It is a partial structural schematic diagram of a support column according to an embodiment of the present invention;

[0029] Figure 4 is a partial structural schematic diagram of a slide bar according to an embodiment of the present invention;

[0030] Figure 5 It is a schematic diagram of the workbench structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] like Figure 1-5 As shown, a light leakage detection device for edge of LCD display screen comprises a base 1, the upper end of the base 1 is fixedly connected with a first moving seat 2, the two ends of the first moving seat 2 are fixedly connected with first fixing plates 3, a first threaded rod 4 is rotatably connected between the two first fixing plates 3, a first moving block 5 is threadedly connected on the first threaded rod 4, a second moving seat 6 is fixedly connected to the upper end of the first moving block 5, a second moving seat 6 is fixedly connected to the two ends of the second moving seat 6, a second threaded rod 8 is rotatably connected between the two second fixing plates 7, a second moving block 9 is threadedly connected on the second threaded rod 8, a workbench 10 is fixedly connected to the upper end of the second moving block 9, and the upper end surface of the workbench 10 is a concave arc surface;

[0034] A support column 11 is fixedly connected to the side of the base 1, and a slide groove 12 is provided on the support column 11. A third threaded rod 13 is rotatably connected in the slide groove 12. A slider 14 is threadedly connected on the third threaded rod 13. The slider 14 is slidably connected in the slide groove 12. A cross plate 16 is fixedly connected to the slider 14. A notch 17 is provided on the end of the cross plate 16 away from the slider 14. A connecting block 18 is rotatably connected in the notch 17. A sliding rod 19 slidably connected is passed through the connecting block 18. A bracket 20 is fixedly connected to the lower end of the sliding rod 19. Two guide wheels 21 are rotatably connected to the inner side of the lower end of the bracket 20. A stopper 22 is fixedly connected to the sliding rod 19. A spring 23 is sleeved on the sliding rod 19 between the connecting block 18 and the stopper 22. A fixing piece 24 is fixedly connected to the side wall of the sliding rod 19, and a microscope 25 is fixedly connected to the fixing piece 24.

[0035] When in use, place the curved LCD display screen on the workbench 10, rotate the first threaded rod 4 to drive the first moving block 5 to move, the first moving block 5 drives the second moving seat 6 to move, the second moving seat 6 drives the workbench 10 to move, the second threaded rod 8 drives the second moving block 9 to move, the second moving block 9 drives the workbench 10 to move, adjust the position of the workbench 10 in the plane, and then adjust the position of the curved display screen in the plane, then rotate the third threaded rod 13 to drive the slider 14 to move down in the slide groove 12, the slider 14 drives the cross plate 16 to move, the cross plate 16 drives the connecting block 18 to move, the connecting block 18 moves down to squeeze the spring 23, so that The two guide wheels 21 are tightly fitted to the upper surface of the workbench 10. At this time, under the correction of the two guide wheels 21, the slide bar 19 is as perpendicular to the surface of the workbench 10 as possible, and then the microscope 25 is as perpendicular to the display screen as possible. Then, the first threaded rod 4 is rotated to drive the first moving block 5 to move, the first moving block 5 drives the second moving seat 6 to move, and the second moving seat 6 drives the workbench 10 to move. While the two guide wheels 21 roll on the upper surface of the workbench 10, the inclination of the slide bar 19 is adjusted according to the curvature of the workbench 10, so that the slide bar 19 is as perpendicular to the surface of the workbench 10 as possible, and then the microscope 25 is as perpendicular to the display screen as possible.

[0036] In one embodiment of the present invention, in order to make the first movable block 5 more stable when moving, first guide rods 26 are arranged on both sides of the first threaded rod 4, the first guide rods 26 are arranged parallel to the first threaded rod 4, and the first guide rods 26 penetrate the first movable block 5 so that the first guide rods 26 are slidably connected to the first movable block 5, and the two ends of the first guide rods 26 are fixedly connected to the first fixed plate 3.

[0037] In one embodiment of the present invention, in order to facilitate the rotation of the first threaded rod 4 , one end of the first threaded rod 4 is fixedly connected to a first rotating member 27 .

[0038] In one embodiment of the present invention, in order to make the second movable block 9 more stable when moving, second guide rods 28 are arranged on both sides of the second threaded rod 8, the second guide rods 28 are arranged parallel to the second threaded rod 8, and the second guide rods 28 penetrate the second movable block 9 so that the second guide rods 28 are slidably connected to the second movable block 9, and the two ends of the second guide rods 28 are fixedly connected to the second fixed plate 7.

[0039] In one embodiment of the present invention, in order to facilitate the rotation of the second threaded rod 8 , one end of the second threaded rod 8 is fixedly connected to a second rotating member 29 .

[0040] In one embodiment of the present invention, in order to facilitate the rotation of the third threaded rod 13, a notch 30 is provided on the support column 11 at the lower end of the slide slot 12, a first bevel gear 31 is provided in the notch 30, the first bevel gear 31 is fixedly connected to the lower end of the third threaded rod 13, the circumferential side of the first bevel gear 31 is meshedly connected to the second bevel gear 32, a rotating shaft 33 is fixedly connected to the second bevel gear 32, the rotating shaft 33 penetrates the support column 11 so that the rotating shaft 33 is rotatably connected to the support column 11. The rotation of the driving shaft 33 drives the second bevel gear 32 to rotate, the second bevel gear 32 drives the first bevel gear 31 to rotate, and the first bevel gear 31 drives the third threaded rod 13 to rotate.

[0041] In one embodiment of the present invention, in order to facilitate the rotation of the rotating shaft 33 , one end of the rotating shaft 33 is fixedly connected to a third rotating member 34 .

[0042] In one embodiment of the present invention, in order to prevent the slide bar 19 from rotating, the slide bar 19 is a square bar, and a square hole matching the slide bar 19 is formed on the connecting block 18 .

[0043] In one embodiment of the present invention, in order to facilitate the adsorption and fixation of the display screen on the workbench 10, a first air hole 35 is opened inside the workbench 10 along its length direction, one end of the first air hole 35 is a closed end, and the other end is an open end, and a plurality of second air holes 36 are opened vertically on the workbench 10, the upper end and the lower end of the second air hole 36 are both open ends, and the lower end of the second air hole 36 is communicated with the first air hole 35.

[0044] In one embodiment of the present invention, an interface 37 is provided at the open end of the first air hole 35. The interface 37 is provided to facilitate connection with a negative pressure device.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An LCD display screen edge light leakage detection device, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a first movable seat (2), the two ends of the first movable seat (2) are fixedly connected to first fixed plates (3), a first threaded rod (4) is rotatably connected between the two first fixed plates (3), a first movable block (5) is threadedly connected to the first threaded rod (4), the upper end of the first movable block (5) is fixedly connected to a second movable seat (6), the two ends of the second movable seat (6) are fixedly connected to second fixed plates (7), a second threaded rod (8) is rotatably connected between the two second fixed plates (7), a second movable block (9) is threadedly connected to the second threaded rod (8), the upper end of the second movable block (9) is fixedly connected to a workbench (10), and the upper end surface of the workbench (10) is an inwardly concave arc surface; The side of the base (1) is fixedly connected with a support column (11), a slide groove (12) is provided on the support column (11), a third threaded rod (13) is rotatably connected in the slide groove (12), a slider (14) is threadedly connected on the third threaded rod (13), the slider (14) is slidably connected in the slide groove (12), a transverse plate (16) is fixedly connected to the slider (14), a notch (17) is provided on one end of the transverse plate (16) away from the slider (14), a connecting block (16) is rotatably connected in the notch (17) 8), a sliding rod (19) slidably connected is passed through the connecting block (18), a bracket (20) is fixedly connected to the lower end of the sliding rod (19), two guide wheels (21) are rotatably connected to the inner side of the lower end of the bracket (20), a stopper (22) is fixedly connected to the sliding rod (19), a spring (23) is sleeved on the sliding rod (19) between the connecting block (18) and the stopper (22), a fixing piece (24) is fixedly connected to the side wall of the sliding rod (19), and a microscope (25) is fixedly connected to the fixing piece (24).

2. The LCD display screen edge light leakage detection device according to claim 1, characterized in that: First guide rods (26) are arranged on both sides of the first threaded rod (4). The first guide rod (26) is arranged parallel to the first threaded rod (4). The first guide rod (26) passes through the first moving block (5) so that the first guide rod (26) is slidably connected to the first moving block (5). Both ends of the first guide rod (26) are fixedly connected to the first fixing plate (3).

3. The LCD display screen edge light leakage detection device according to claim 2, characterized in that: One end of the first threaded rod (4) is fixedly connected to a first rotating member (27).

4. The LCD display screen edge light leakage detection device according to claim 1, characterized in that: Second guide rods (28) are arranged on both sides of the second threaded rod (8), the second guide rods (28) are arranged parallel to the second threaded rod (8), the second guide rods (28) penetrate the second moving block (9) so that the second guide rods (28) are slidably connected to the second moving block (9), and the two ends of the second guide rods (28) are fixedly connected to the second fixing plate (7).

5. The LCD display screen edge light leakage detection device according to claim 4, characterized in that: One end of the second threaded rod (8) is fixedly connected to a second rotating member (29).

6. The LCD display screen edge light leakage detection device according to claim 1, characterized in that: A notch (30) is provided on the support column (11) at the lower end of the slide groove (12), a first bevel gear (31) is arranged in the notch (30), the first bevel gear (31) is fixedly connected to the lower end of the third threaded rod (13), a second bevel gear (32) is meshedly connected to the circumferential side of the first bevel gear (31), a rotating shaft (33) is fixedly connected to the second bevel gear (32), the rotating shaft (33) passes through the support column (11) so that the rotating shaft (33) is rotatably connected to the support column (11).

7. The LCD display screen edge light leakage detection device according to claim 6, characterized in that: One end of the rotating shaft (33) is fixedly connected to a third rotating member (34).

8. The LCD display screen edge light leakage detection device according to claim 1, characterized in that: The sliding rod (19) is a square rod, and the connecting block (18) is provided with a square hole matched with the sliding rod (19).

9. The LCD display screen edge light leakage detection device according to claim 1, characterized in that: A first air hole (35) is provided inside the workbench (10) along its length direction, one end of the first air hole (35) is a closed end and the other end is an open end, and a plurality of second air holes (36) are vertically provided on the workbench (10), the upper end and the lower end of the second air hole (36) are both open ends, and the lower end of the second air hole (36) is communicated with the first air hole (35).

10. The LCD display screen edge light leakage detection device according to claim 9, characterized in that: The opening end of the first air hole (35) is provided with an interface (37).

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