Device for detecting TFT (Thin Film Transistor) without polaroid

Abstract

The utility model discloses a device for detecting a TFT (Thin Film Transistor) without a polaroid, which comprises a support base, a backlight is arranged at the top of the support base and close to the middle, support rods are fixed on two sides of the top of the support base, and a support frame is movably connected between the two support rods; a concave supporting step is arranged on the inner side of the supporting frame, a polaroid body is placed on the supporting frame through the supporting step, through the designed structures of the supporting base, the backlight, the supporting rod, the supporting frame and the like, defect detection can be carried out on a liquid crystal TFT before the polaroid is attached to the liquid crystal TFT, the effect that the polaroid is attached to the liquid crystal TFT is simulated, and the liquid crystal TFT can be used for detecting defects of the liquid crystal TFT before the polaroid is attached to the liquid crystal TFT. Therefore, defects possibly existing on the liquid crystal TFT can be displayed through the polaroid, material waste of the polaroid caused by the fact that the defects are displayed after the liquid crystal TFT is attached to the polaroid is avoided, and the yield of the liquid crystal TFT is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal TFT detection, in particular to a TFT detection device without a polarizing plate attached. Background Art

[0002] TFT is a thin-film field-effect transistor. A thin-film transistor refers to that each liquid crystal pixel point on a liquid crystal display is driven by a thin-film transistor integrated behind it, so that high-speed, high-brightness, and high-contrast display screen information can be achieved. TFT belongs to an active matrix liquid crystal display.

[0003] With the increase in the display industry, consumers' pursuit of quality is getting higher and higher, and the quality of display module factories is also constantly improving. Since the liquid crystal TFT without a polarizing plate attached is just a white light, some display defects cannot be detected in time. Therefore, it is necessary to detect the defects of the liquid crystal TFT in advance before the polarizing plate is attached to the liquid crystal TFT, so as to avoid the waste of polarizing plate materials caused by the defects that appear after the liquid crystal TFT is bonded to the polarizing plate.

[0004] Therefore, aiming at the problem that the liquid crystal TFT may have defects before the polarizing plate is attached, we designed a TFT detection device without a polarizing plate attached. Content of the Utility Model

[0005] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a TFT detection device without a polarizing plate attached, including a support base, a backlight is arranged at the top of the support base and near the middle position, support rods are fixed on both sides of the top of the support base, and a support frame is movably connected between the two support rods; a concave support step is arranged inside the support frame, and a polarizing plate body is placed on the support frame through the support step.

[0007] As a further scheme of the utility model: the support frame includes three rod bodies, and the three rod bodies are connected to form a U-shaped frame body. Locking screw holes penetrating from left to right are arranged on both the left and right sides of the support frame and near one side of the support rod.

[0008] As a further scheme of the utility model: the locking screw holes are arranged at a position below the support step.

[0009] As a further scheme of the utility model: concave guide grooves are arranged on both the left and right sides of the support rod, and screw adjustment grooves penetrating from left to right are equidistantly arranged on the inner wall of the guide groove from top to bottom. The size of the screw adjustment groove is the same as the size of the locking screw hole.

[0010] As a further solution of the present utility model: There are also two wing screws. The wing screws are threadedly connected in the screw adjustment grooves and threadedly penetrate through the locking screw holes to fix the support frame between the two support rods. And a nut is also threadedly connected to the end of the wing screw penetrating through the support frame, and the nut is closely attached to the side surface of the support frame.

[0011] As a further solution of the present utility model: After the polarizer body is placed in the support step of the support frame, the top surface of the polarizer body is on the same horizontal line as the top of the support frame.

[0012] As a further solution of the present utility model: A power interface is also provided on one side of the support base. The power interface is connected to the backlight through a wire. A liquid crystal TFT is placed on the backlight. The area of the liquid crystal TFT placed on the backlight is smaller than the area of the polarizer body, and the polarizer body is directly above the polarizer body.

[0013] As a further solution of the present utility model: A counterweight is fixed to the bottom of the support base. The size of the counterweight is the same as the size of the support base. A rubber pad is fixed to the bottom of the counterweight.

[0014] As a further solution of the present utility model: The two support rods are respectively fixed at two corners on the back of the top of the support base. The two support rods are of the same height and their bottoms are on the same horizontal line.

[0015] As a further solution of the present utility model: Both the support rod and the support frame are made of stainless steel.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In this application, through the designed structures such as the support base, backlight, support rods, and support frame, it is possible to detect defects of the liquid crystal TFT before the liquid crystal TFT is attached to the polarizer, to simulate the effect of attaching the liquid crystal TFT to the polarizer, and then to make the possible defects on the liquid crystal TFT appear through the polarizer, thereby avoiding waste of polarizer materials caused by defects appearing only after the liquid crystal TFT and the polarizer are attached, improving the yield rate of the liquid crystal TFT, and cooperating with the designed threaded adjustment grooves, locking screw holes, and wing screws, it is possible to adjust the height of the support frame on the support rods, so as to adjust the distance between the liquid crystal TFT and the polarizer, so as to facilitate the workers to clearly view the defect situation of the liquid crystal TFT in different situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present utility model;

[0019] Figure 2 is the present utility model Figure 1Schematic diagram of the enlarged structure at location A in

[0020] Figure 3 It is a schematic diagram of the position of the locking screw hole of the present utility model on the support frame;

[0021] Figure 4 It is a schematic side view structure diagram of the support rod of the present utility model;

[0022] Figure 5 It is a three-dimensional structure diagram of the present utility model after placing the polarizing film body on the support frame.

[0023] The reference numerals and names in the figure are as follows:

[0024] 1. Support base; 2. Backlight; 3. Power interface; 4. Support rod; 5. Guide groove; 501. Screw adjustment groove; 6. Support frame; 601. Support step; 602. Locking screw hole; 7. Butterfly screw; 8. Polarizing film body; 9. Counterweight. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 A TFT detection device without a polarizing film attached includes a support base 1. A backlight 2 is provided at the top of the support base 1 and near the middle position. Support rods 4 are fixed on both sides of the top of the support base 1. A support frame 6 is movably connected between the two support rods 4. The support rods 4 and the support frame 6 are both made of stainless steel. The stainless steel support rods 4 and support frame 6, on the one hand, serve the role of being hard and firm, and on the other hand, can reduce the possibility of rusting and extend the service life of the device; A concave support step 601 is provided inside the support frame 6. The support frame 6 places the polarizing film body 8 through the support step 601. When the polarizing film body 8 is placed in the support step 601 of the support frame 6, the top surface of the polarizing film body 8 is at the same horizontal line as the top of the support frame 6. Through the designed support step 601, the polarizing film body 8 can be stably supported, ensuring the stability of the polarizing film body 8 on the support frame 6.

[0027] Please refer to Figures 1-4, in this embodiment, the support frame 6 includes three rod bodies, and the three rod bodies are connected to form a U-shaped frame. On both the left and right sides of the support frame 6 and near one side of the support rod 4, there are locking screw holes 602 that penetrate through from left to right; the locking screw holes 602 are opened at a position below the support step 601. On both the left and right sides of the support rod 4, there are concave guide grooves 5, and on the inner wall of the guide groove 5, screw adjustment grooves 501 that penetrate through from left to right are equidistantly arranged from top to bottom. The size of the screw adjustment groove 501 is the same as the size of the locking screw hole 602.

[0028] Specifically, the support frame 6 composed of three rod bodies can provide a good supporting effect on the polarizer body 8. One side of the support frame 6 is an open structure, which is to facilitate the placement or removal of the polarizer body 8 in the support step 601 of the support frame 6. With the designed locking screw holes 602 and screw adjustment grooves 501 of the same size, it is convenient to screw in the wing screws 7, and it can also enable the two support rods 4 to have a multi-stage adjustment function, facilitating the adjustment of the support frame 6 to different heights. The locking screw holes 602 are opened at a position below the support step 601, which is to prevent the wing screws 7 in the locking screw holes 602 from affecting the placed polarizer body 8 and enable the wing screws 7 not to contact the polarizer body 8.

[0029] Please refer to Figures 1-2 , in this embodiment, there are also two wing screws 7. The wing screws 7 are threadedly connected in the screw adjustment grooves 501 and threadedly penetrate through the locking screw holes 602 to fix the support frame 6 between the two support rods 4. One end of the wing screw 7 penetrating through the support frame 6 is also threadedly connected with a nut, and the nut is closely attached to the side surface of the support frame 6.

[0030] Specifically, through the designed wing screws 7, the purpose of manual screwing can be achieved, which is convenient for operation. With the nut screwed into one end of the wing screw 7 away from the wing piece, the wing screw 7 can cooperate with the nut to clamp and fix the support frame 6, making the support frame 6 more stable between the two support rods 4.

[0031] Please refer to Figure 1 , in this embodiment, a power interface 3 is also provided on one side of the support base 1. The power interface 3 is connected to the backlight 2 through a wire. A liquid crystal TFT is placed on the backlight 2. The area of the liquid crystal TFT placed on the backlight 2 is smaller than the area of the polarizer body 8, and the polarizer body 8 is directly above the polarizer body 8.

[0032] Specifically, the power interface 3 is used to connect to the mains power supply to supply power to the backlight 2. After the backlight 2 is lit, it is convenient to inspect the liquid crystal TFT. Since the area of the liquid crystal TFT is smaller than the area of the polarizer body 8, it can ensure that the polarizer body 8 can entirely cover the liquid crystal TFT, which is beneficial for inspection and avoids the appearance of dead angles.

[0033] Please refer to Figure 1 , in this embodiment, a counterweight 9 is fixed to the bottom of the support base 1. The size of the counterweight 9 is the same as that of the support base 1, and a rubber pad is fixed to the bottom of the counterweight 9.

[0034] Specifically, through the designed counterweight 9, which can be a stainless steel block, it has the effect of stabilizing the center of gravity of the support base 1 and ensuring the stability of the support frame 6. And a rubber pad is also provided at the bottom of the counterweight 9, which can reduce the possibility of the support base 1 sliding when placed on the ground or a tabletop, and has the effect of increasing friction.

[0035] Please refer to Figure 1 , in this embodiment, two support rods 4 are respectively fixed at the two corners on the back of the top of the support base 1. The two support rods 4 have the same height and their bottoms are on the same horizontal line.

[0036] Specifically, the two support rods 4 are arranged at the two corners on one side of the top of the support base 1, which can facilitate the staff to place or remove the polarizer body 8. And the two support rods 4 have the same height and their bottoms are on the same horizontal line, which can avoid misalignment between the rod bodies and ensure the normal installation of the support frame 6.

[0037] During use:

[0038] Place the liquid crystal TFT to be detected on the backlight 2, insert the power supply into the power interface 3 to light up the backlight 2, place the polarizer body 8 on the support step 601 of the support frame 6, use the support frame 6 to support the polarizer body 8, and then use the polarizer body 8 to inspect the liquid crystal TFT after the lit backlight 2 passes through the liquid crystal TFT. At this time, the staff can stand on the back of the support base 1 and inspect the liquid crystal TFT through the polarizer body 8. When there are defects in the liquid crystal TFT, remove it for recording. When there are no defects in the liquid crystal TFT, it can be removed and a new liquid crystal TFT to be detected can be placed.

[0039] When it is necessary to adjust the height of the support frame 6, the staff can loosen the two wing screws 7 to separate them from the nuts and withdraw the wing screws 7 from the locking screw holes 602. When the support frame 6 is no longer fixed by the wing screws 7, the support frame 6 is in a relaxed state. At this time, the staff can place the support frame 6 at an appropriate height. After adjustment, screw the wing screws 7 back into the locking screw holes 602 and cooperate with the nuts to fix the support frame 6 again, so that the support frame 6 maintains its height and is parallel to the support base 1.

[0040] It should be noted that the angle of the support frame 6 can also be adjusted to facilitate the staff to check from different perspectives. The specific operation is to first loosen the two wing screws 7 without separating them from the nuts to make the support frame 6 in a relatively relaxed state, and then the support frame 6 can be rotated in the up and down directions, so that the angle of the support frame 6 changes. After the angle is adjusted appropriately, the wing screws 7 can be tightened, and then cooperate with the tightening of the nuts to fix the support frame 6 at this angle.

[0041] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A TFT detection device without a polarizer, characterized in that: It comprises a support base (1), a backlight (2) is arranged at the top and near the middle of the support base (1), support rods (4) are fixed on both sides of the top of the support base (1), and a support frame (6) is movably connected between the two support rods (4); A concave supporting step (601) is provided on the inner side of the supporting frame (6), and a polarizer body (8) is placed on the supporting frame (6) via the supporting step (601).

2. A TFT detection device without a polarizer according to claim 1, characterized in that: The support frame (6) comprises three rods, which are connected to form a U-shaped frame. The left and right sides of the support frame (6) and the side close to the support rod (4) are provided with locking screw holes (602) that pass through the left and right sides.

3. A TFT detection device without a polarizer according to claim 2, characterized in that: The locking screw hole (602) is opened at a position below the supporting step (601).

4. The TFT detection device without polarizer according to claim 1, characterized in that: The left and right sides of the support rod (4) are both provided with inwardly concave guide grooves (5), and the inner wall of the guide groove (5) is provided with left and right through screw adjustment grooves (501) at equal distances from top to bottom, and the size of the screw adjustment grooves (501) is the same as that of the locking screw hole (602).

5. The TFT detection device without polarizer according to claim 1, characterized in that: It also includes two butterfly screws (7), which are threadedly connected in the screw adjustment slot (501) and threadedly penetrate the locking screw hole (602) to fix the support frame (6) between the two support rods (4), and one end of the butterfly screw (7) that penetrates the support frame (6) is also threadedly connected to a nut, and the nut is tightly fitted on the side of the support frame (6).

6. The TFT detection device without polarizer according to claim 1, characterized in that: When the polarizer body (8) is placed in the support step (601) of the support frame (6), the top surface of the polarizer body (8) and the top of the support frame (6) are on the same horizontal line.

7. The TFT detection device without polarizer according to claim 1, characterized in that: A power interface (3) is also provided on one side of the support base (1), and the power interface (3) is connected to the backlight (2) via a wire. A liquid crystal TFT is placed on the backlight (2), and the area of ​​the liquid crystal TFT placed on the backlight (2) is smaller than the area of ​​the polarizer body (8), and the polarizer body (8) is located directly above the polarizer body (8).

8. The TFT detection device without polarizer according to claim 1, characterized in that: A counterweight block (9) is fixed to the bottom of the support base (1); the size of the counterweight block (9) is the same as that of the support base (1); and a rubber pad is fixed to the bottom of the counterweight block (9).

9. The TFT detection device without polarizer according to claim 1, characterized in that: The two support rods (4) are respectively fixed at two corners of the top back of the support base (1); the two support rods (4) have the same height and their bottoms are on the same horizontal line.

10. The TFT detection device without polarizer according to claim 1, characterized in that: The support rod (4) and the support frame (6) are both made of stainless steel.

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