A display panel detection device and a detection method

Abstract

The application discloses a display panel detection device and method. The detection device comprises a carrier table having a first surface and a second surface arranged oppositely, a bearing area for bearing the display panel is arranged on the first surface, and the bearing area is provided with a detection hole penetrating through the carrier table in a direction from the first surface to the second surface; a detection connector is inserted into the detection hole from the second surface, and the detection connector is used for connecting with a detection site of the display panel to detect the display panel; a cover is arranged on the first surface, and the cover covers the bearing area in the orthographic projection on the first surface, and the cover and the first surface cooperate to form a sealed cavity; and a pressurizing assembly is communicated with the sealed cavity and used for providing pressure to the sealed cavity to make the display panel adhere to the bearing area. The application can realize non-contact fixing of the display panel, avoid affecting the display effect of the display panel, adjust the pressing force of the display panel according to the pressure detection requirement, has a large adjustment range, and avoids the problem of detection failure.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a testing device and method for display panels. Background Technology

[0002] Before leaving the factory, the display panel needs to undergo a power-on test. Traditional display panel testing mainly uses the front pressing method, that is, the power-on test point of the display panel is set on the display surface side of the display panel. When the power-on is activated, the PIN pin of the press connector contacts the power-on Pad to light up the display back panel.

[0003] However, with the development of narrow bezel and seamless splicing display technologies, there is no extra space on the display surface to set up dot detection points. Therefore, the dot detection points are set on the non-display surface of the display panel, that is, the back of the display panel. Existing back dot detection methods use a vacuum stage to adsorb the display panel. However, the vacuum stage has insufficient adsorption force. When pressing the dot detection, the insufficient adsorption force of the platform will cause vacuum leakage, resulting in dot detection failure. Summary of the Invention

[0004] The main technical problem this application addresses is to provide a detection device for a display panel, thereby solving the problem in the prior art where the back-side screen-doping method uses a vacuum stage to adsorb the display panel. However, the vacuum stage's adsorption force is insufficient, and during screen-doping, insufficient adsorption force can cause vacuum leakage, leading to screen-doping failure.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application is: providing a detection device for a display panel, comprising:

[0006] The stage has a first surface and a second surface arranged opposite to each other. The first surface is provided with a support area for supporting the display panel. The support area has a detection hole that penetrates the stage in a direction from the first surface toward the second surface.

[0007] A detection connector is inserted into the detection hole from the second surface. The detection connector is used to expose a detection point of the display panel from the detection hole to connect with the display panel for detecting the display panel.

[0008] A cover is placed on the first surface, and the orthographic projection of the cover on the first surface covers the bearing area, and the cover and the first surface cooperate to form a sealed cavity.

[0009] A pressurizing component, connected to the sealed cavity, is used to provide pressure to the sealed cavity so that the display panel fits against the bearing area.

[0010] In one embodiment, the cover includes:

[0011] The top plate has a third surface facing the stage;

[0012] A side plate is disposed on the third surface around the periphery of the top plate, and the side plate has a fourth surface facing the platform, the fourth surface being tightly sealed to the first surface.

[0013] In one implementation, it further includes:

[0014] A sealing gasket is stacked between the fourth surface and the first surface, and the sealing gasket is fixed to the first surface or the fourth surface.

[0015] In one embodiment, the sealing gasket is fixed to the first surface, and a groove matching the side plate is formed on the end face of the sealing gasket opposite to the first surface.

[0016] In one embodiment, a transparent area is provided on the top plate, and the orthographic projection of the transparent area on the first surface covers the bearing area.

[0017] Preferably, the entire area of ​​the top plate is formed of a transparent material.

[0018] In one implementation, it further includes:

[0019] A light-transmitting sealing film is located on the first surface. The orthographic projection of the light-transmitting sealing film on the first surface covers the bearing area, and the light-transmitting sealing film is located on the side of the display panel away from the first surface. The periphery of the light-transmitting sealing film is tightly sealed to the first surface.

[0020] Preferably, the light transmittance of the light-transmitting sealing film is greater than 99%.

[0021] Preferably, the orthographic projection of the light-transmitting sealing film on the first surface covers the orthographic projection of the cover on the first surface.

[0022] Preferably, the light-transmitting sealing film is located inside the sealing cavity, and the periphery of the light-transmitting sealing film is sealed to the first surface through a sealing unit, wherein the sealing unit is a sealant or a sealing strip.

[0023] In one embodiment, the pressurization assembly includes a fan, the cover has an air hole for filling and releasing gas, and the output end of the fan is connected to the air hole.

[0024] In one embodiment, the platform is further provided with a vacuum suction hole that penetrates the platform in a direction from the first surface toward the second surface. The orthographic projection of the vacuum suction hole on the first surface is located within the bearing area, and the orthographic projection of the vacuum suction hole on the first surface does not overlap with the orthographic projection of the detection hole on the first surface.

[0025] In one embodiment, the display panel has a display surface and a non-display surface, the detection point of the display panel is located on the non-display surface, and the first surface contacts the non-display surface to support the display panel.

[0026] To solve the above-mentioned technical problems, another technical solution adopted in this application is: providing a method for detecting a display panel, comprising:

[0027] The display panel is placed on a platform, wherein the platform has a first surface and a second surface disposed opposite to each other. The first surface is provided with a support area for supporting the display panel. A detection hole is provided on the support area. The detection hole is disposed through the platform along the direction from the first surface toward the second surface, and the orthographic projection of the detection hole on the first surface covers the orthographic projection of the detection point of the display panel on the first surface.

[0028] A cover is provided on the first surface, the orthographic projection of the cover on the first surface covers the bearing area, and the cover and the first surface cooperate to form a sealed cavity;

[0029] A medium is filled into the sealed cavity, so that the display panel is pressed and fixed in the bearing area under the pressure of the medium;

[0030] A detection connector is provided on one side of the second surface of the stage. The detection connector is controlled to be inserted into the detection hole from the second surface and protrude from the first surface to press against the detection point of the display panel for detection.

[0031] The advantages of this application, which differ from the existing technology, are:

[0032] The display panel testing device of this application forms a sealed cavity by setting a cover on the platform, and pressurizing the sealed cavity with a medium to achieve non-contact fixing of the display panel, thus avoiding affecting the display effect of the display surface. The testing hole set on the platform enables back-side testing of the display panel. The clamping force of the display panel can be adjusted according to the crimping testing requirements. The clamping force adjustment range is large, effectively avoiding the problem of insufficient adsorption force in traditional vacuum adsorption fixing of display panels, which easily leads to testing failure.

[0033] The method for testing the display panel described in this application involves placing the display panel on a stage, covering it with a cover and filling it with a medium to fix the display panel. Inserting a test connector into the test hole enables the crimping test of the display panel. The method is simple, quick, and has good stability. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of one embodiment of the detection device for the display panel of this application;

[0035] Figure 2 This is a schematic diagram of another embodiment of the detection device for the display panel of this application;

[0036] Figure 3 This is a schematic diagram of another embodiment of the detection device for the display panel of this application;

[0037] Figure 4 This is a schematic diagram of another embodiment of the detection device for the display panel of this application;

[0038] Figure 5 This is a flowchart illustrating one embodiment of the detection method for the display panel of this application.

[0039] As shown in the figure:

[0040] Stage 100; First surface 101; Second surface 102; Bearing area 103; Detection hole 104; Vacuum suction hole 105;

[0041] Display panel 200; display surface 201; non-display surface 202; detection point 203;

[0042] Test connector 300;

[0043] Cover body 400; top plate 401; third surface 4010; side plate 402; fourth surface 4020; air vent 403;

[0044] Translucent sealing film 500; sealant 501;

[0045] Sealing gasket 600; Slot 601;

[0046] Sealed cavity 700. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are protected by this application.

[0048] Please see Figure 1 , Figure 1 This is a schematic diagram of one embodiment of the detection device for the display panel 200 of this application.

[0049] The testing device includes a stage 100, which has a first surface 101 and a second surface 102 arranged opposite to each other. The first surface 101 is provided with a support area 103 for supporting the display panel 200.

[0050] Specifically, the display panel 200 in this embodiment can be an OLED panel, an LCD panel, a Micro-LED panel, etc., all of which can achieve the effect of this embodiment.

[0051] The display panel 200 has a display surface 201 and a non-display surface 202. In order to avoid the display surface 201 of the display panel 200 from directly contacting and being pressured by the stage 100, the non-display surface 202 of the display panel 200 is used to contact the stage 100 so that the display panel 200 can be supported on the stage 100.

[0052] Due to the development of narrow bezels and seamless splicing display technology in the display panel 200, there is no extra space on the display surface 201 to set the detection point 203. The detection point 203 is set on the non-display surface 202 through side wiring technology or glass perforation wiring technology.

[0053] In order to connect with the detection point 203 on the non-display surface 202 for detection, a detection hole 104 is provided on the support area 103, which penetrates the stage 100 along the direction from the first surface 101 toward the second surface 102. The orthographic projection of the detection hole 104 on the first surface 101 covers the orthographic projection of the detection point 203 on the first surface 101.

[0054] A detection connector 300 is provided on one side of the second surface 102 of the stage 100. The detection connector 300 is inserted into the detection hole 104 from the second surface 102 and extends out from the first surface 101 to connect with the detection point 203 of the display panel 200 for detection.

[0055] To facilitate the placement of the display panel 200 and the alignment of the detection points 203 and the detection holes 104, the size of the support area 103 is the same as that of the display panel 200. That is, the support area 103 is located at the orthographic projection area of ​​the display panel 200 on the first surface 101, and the support area 103 is marked on the stage 100. When placing the display panel 200, simply placing it according to the position of the support area 103 is sufficient to ensure the alignment of the detection points 203 and the detection holes 104. It is understood that in other embodiments, the area of ​​the support area 103 can be set to be larger than the area of ​​the display panel 200, and other positioning methods, such as positioning rods, can be used to position the display panel 200, all achieving the same effect as this embodiment.

[0056] To ensure the connection stability between the detection connector 300 and the detection point 203, the relative force between them must be maintained to achieve crimp testing. Therefore, the display panel 200 needs to be pressed firmly onto the stage 100 to overcome the pressure of the detection connector 300.

[0057] If a contact-type pressing display panel 200 is used, the pressure needs to be applied directly to the display surface 201 of the display panel 200, which can easily damage the display surface 201, affecting the yield and display effect. On the other hand, if the display panel 200 is vacuum-adsorbed onto the first surface 101, the vacuum adsorption force is difficult to meet the detection pressure of the detection connector 300, which can easily cause vacuum leakage and thus lead to detection failure.

[0058] In this embodiment, a cover 400 is provided on the first surface 101. The orthographic projection of the cover 400 on the first surface 101 covers the bearing area 103, thereby enabling the cover 400 and the first surface 101 to cooperate to form a sealed cavity 700.

[0059] Specifically, the cover 400 includes a top plate 401 and a side plate 402. The top plate 401 has a third surface 4010 facing the platform 100, and the side plate 402 is disposed on the third surface 4010 around the periphery of the top plate 401.

[0060] The side plate 402 has a fourth surface 4020 facing the stage 100, and the fourth surface 4020 is tightly sealed to the first surface 101.

[0061] The cover 400 has air holes 403. A fan (not shown in the figure) connected to the air holes 403 injects air into the sealing cavity 700 to pressurize the inside of the sealing cavity 700, thereby fixing the display panel 200 to the stage 100 in a non-contact manner to overcome the pressure of the test connector 300. By controlling the air pressure inside the sealing cavity 700, the clamping force of the display panel 200 can be precisely controlled to meet the requirements of the crimping test. At the same time, the non-contact fixing method can also effectively avoid damage to the display surface 201.

[0062] Since the top plate 401 of the cover 400 needs to be used to observe the working status of the display panel 200, it is preferable that the vent 403 is opened on the side plate 402.

[0063] In other embodiments, other pressurizing media, such as inert gas or liquid, can be injected into the cover 400 to achieve the same effect as this embodiment. In order to avoid the pressurizing medium affecting the observation of the display surface 201 of the display panel 200, the pressurizing medium is preferably a medium with a light transmittance greater than 99%.

[0064] To facilitate observation of the working status of the display surface 201 during testing, the top plate 401 is made of a transparent material. In one application scenario, the top plate 401 is made of high-strength transparent quartz glass. In other application scenarios, the top plate 401 can also be made of transparent materials such as transparent polyimide or transparent ceramics, all of which can achieve the effect of this embodiment.

[0065] In this embodiment, the shape of the top plate 401 and the shape of the sealing cavity 700 are not limited. They can be selected according to the shape of the display panel 200, as long as the orthographic projection of the transparent top plate 401 on the first surface 101 can cover the bearing area 103. For example, for a rectangular display panel 200, a rectangular top plate 401 can be used, or a circular top plate 401 that can cover the rectangular display panel 200 can be used. A rectangular sealing cavity 700 can be used, or a circular sealing cavity 700 that can accommodate the rectangular display panel 200 can be used. For a circular display panel 200, a circular top plate 401 can be used, or a rectangular top plate 401 that can cover the circular display panel 200 can be used. A circular sealing cavity 700 can be used, or a rectangular sealing cavity 700 that can accommodate the circular display panel 200 can be used. All of these can achieve the effects of this embodiment. Understandably, in other embodiments, a portion of the top plate 401 may be made of a transparent material to form a transparent area, while other areas may be made of a non-transparent material, ensuring that the orthogonal projection of the transparent area on the first surface 101 covers the bearing area 103.

[0066] Understandably, in this embodiment, in order to ensure the fixing effect of the display panel 200, it is necessary to ensure the fit and seal between the display panel 200 and the first surface 101 of the stage 100. Therefore, the orthographic projection of the display panel 200 on the first surface 101 must completely cover the detection hole 104 to avoid the problem of air leakage in the sealing cavity 700 due to the detection hole 104 being opened at the edge of the display panel 200. At the same time, a sealing strip can be provided between the edge of the display panel 200 and the first surface 101 of the stage 100 to further prevent air leakage.

[0067] To further ensure the airtightness between the display panel 200 and the stage 100, and to protect the display surface 201 of the display panel 200, please refer to [link / reference needed]. Figure 2 , Figure 2 This is a schematic diagram of another embodiment of the detection device for the display panel 200 of this application.

[0068] In this testing device, a light-transmitting sealing film 500 is also provided on the first surface 101 of the stage 100. The light-transmitting sealing film 500 is located on the side of the display panel 200 away from the first surface 101, and the orthogonal projection of the light-transmitting sealing film 500 on the first surface 101 covers the bearing area 103.

[0069] The light-transmitting sealing film 500 is made of polyvinyl chloride, polyethylene, polypropylene, polystyrene or other resins. In order to ensure the observation effect of the display surface 201 of the display panel 200 during testing, the light transmittance of the light-transmitting sealing film 500 is greater than 99%.

[0070] The light-transmitting sealing film 500 is located inside the sealing cavity 700, and the periphery of the light-transmitting sealing film 500 is sealed with the first surface 101 by the sealant 501, thereby protecting the display panel 200 between the light-transmitting sealing film 500 and the first surface 101. Under the pressure inside the sealing cavity 700, the light-transmitting sealing film 500 adheres tightly to the display panel 200. On the one hand, it can effectively prevent the sealing cavity 700 from leaking air due to gaps between the display panel 200 and the carrier 100. On the other hand, the light-transmitting sealing film 500 can also protect the display surface 201 of the display panel 200. Especially when using pressurized media such as liquids, the light-transmitting sealing film 500 can effectively protect the display panel 200.

[0071] It is understood that in other embodiments, structures such as sealing strips can also be used to achieve the sealing between the periphery of the light-transmitting sealing film 500 and the first surface 101, all of which can achieve the effect of this embodiment.

[0072] To further ensure the airtightness of the sealed cavity 700 and simplify the installation of the light-transmitting sealing membrane 500, please refer to [link / reference needed]. Figure 3 , Figure 3 This is a schematic diagram of another embodiment of the detection device for the display panel 200 of this application.

[0073] The orthographic projection of the light-transmitting sealing film 500 on the first surface 101 of the detection device covers the orthographic projection of the cover 400 on the first surface 101. The light-transmitting sealing film 500 is pressed tightly onto the first surface 101 by the cover 400, thus eliminating the need for a separate sealing structure between the light-transmitting sealing film 500 and the first surface 101.

[0074] Under the pressure inside the sealed cavity 700, the light-transmitting sealing film 500 adheres tightly to the display panel 200, and at the same time, the pressure is transmitted to the display panel 200 to press the display panel 200 firmly.

[0075] To ensure a tight seal between the housing 400 and the platform 100 and to improve the fixation of the display panel 200, please refer to [link / reference needed]. Figure 4 , Figure 4 This is a schematic diagram of another embodiment of the detection device for the display panel 200 of this application.

[0076] In this testing device, a sealing gasket 600 is also fixed on the stage 100. The orthographic projection of the sealing gasket 600 on the first surface 101 overlaps with the orthographic projection of the fourth surface 4020 of the side plate 402 on the first surface 101.

[0077] The sealing gasket 600 has a groove 601 on one end face away from the first surface 101 that matches the fourth surface 4020 of the side plate 402.

[0078] The side panel 402 is fitted into the slot 601 and presses the light-transmitting sealing film 500 into the slot 601, thereby simultaneously achieving a seal between the cover 400 and the carrier plate and preventing air leakage between the display panel 200 and the platform 100.

[0079] Understandably, in other embodiments, the sealing gasket 600 can also be fixed on the fourth surface 4020 and fit against the first surface 101. At the same time, the sealing gasket 600 presses the light-transmitting sealing film 500 against the first surface 101 to achieve a seal. Alternatively, the sealing gasket 600 can be without the slot 601, with its two sides close to the first surface 101 and the fourth surface 4020 respectively to achieve a seal, with one side pressing against the light-transmitting sealing film 500. When the light-transmitting sealing film 500 is entirely located inside the sealing cavity 700, the sealing gasket 600 can also be directly placed between the fourth surface 4020 of the side plate 402 and the first surface 101 of the platform 100, all of which can achieve the effect of this embodiment.

[0080] In this embodiment, the support area 103 of the stage 100 is also provided with a vacuum suction hole 105 that penetrates the stage 100 along the direction from the first surface 101 toward the second surface 102. The vacuum suction hole 105 is connected to a vacuum generator (not shown in the figure) to perform vacuum adsorption on the display panel 200. On the one hand, this further avoids air leakage between the display panel 200 and the stage 100, and on the other hand, it further improves the fixation stability of the display panel 200.

[0081] Please see Figure 5 , Figure 5 This is a flowchart illustrating one embodiment of the detection method for the display panel 200 of this application.

[0082] The detection method includes:

[0083] S100: The display panel is placed on a carrier platform, wherein the carrier platform has a first surface and a second surface arranged opposite to each other. A support area for supporting the display panel is provided on the first surface. A detection hole is provided on the support area. The detection hole is arranged through the carrier platform in a direction from the first surface toward the second surface, and the orthographic projection of the detection hole on the first surface covers the orthographic projection of the detection point of the display panel on the first surface.

[0084] Specifically, the stage 100 is pre-set with a bearing area 103 that matches the display panel 200, and a detection hole 104 for detecting the display panel 200 is opened in the bearing area 103.

[0085] To facilitate the alignment of the detection point 203 and the detection hole 104 when placing the display panel 200, in one application scenario, the size of the support area 103 is the same as that of the display panel 200. That is, the support area 103 is set at the orthographic projection area of ​​the display panel 200 on the first surface 101, and the support area 103 is marked on the stage 100. Simply placing the display panel 200 according to the position of the support area 103 is sufficient to ensure the alignment of the detection point 203 and the detection hole 104.

[0086] S200: A cover is provided on the first surface, the orthographic projection of the cover on the first surface covers the bearing area, and the cover and the first surface cooperate to form a sealed cavity.

[0087] The cover 400 is placed over the display panel 200, so that the cover 400 and the first surface 101 form a sealed cavity. In one application scenario, in order to ensure the seal between the cover 400 and the first surface 101, a sealing gasket 600 can be fixed on the fourth surface 4020 of the side plate 402 of the cover 400, or a sealing gasket 600 can be fixed on the first surface 101 at a position corresponding to the fourth surface 4020, so that the seal between the cover 400 and the first surface 101 is ensured by the sealing gasket 600.

[0088] In one embodiment, the following steps are included before step S200:

[0089] A light-transmitting sealing film is disposed on the first surface. The light-transmitting sealing film is located on the side of the display panel away from the first surface, and the orthographic projection of the light-transmitting sealing film on the first surface covers the bearing area.

[0090] The light-transmitting sealing film 500 prevents air leakage between the display panel 200 and the carrier 100. When the light-transmitting sealing film 500 is located inside the sealed cavity, sealing units such as sealant or sealing strips can be used to seal the periphery of the light-transmitting sealing film 500 and the first surface 101. When the orthogonal projection of the light-transmitting sealing film 500 on the first surface 101 covers the orthogonal projection of the cover 400 on the first surface 101, the seal between the light-transmitting sealing film 500 and the first surface 101 can be achieved simultaneously through the cover 400 in step S200.

[0091] S300: The medium is filled into the sealed cavity, so that the display panel is pressed and fixed in the bearing area under the pressure of the medium.

[0092] In one application scenario, air can be used as the medium. By setting air holes 403 on the side plate 402 or top plate 401 of the cover 400, air is filled into the sealed cavity through the air holes 403 to pressurize the inside of the sealed cavity, thereby fixing the display panel 200 on the carrier 100 in a non-contact manner. In other application scenarios, inert gases such as nitrogen can also be used as the medium. In embodiments where a light-transmitting sealing film 500 is provided on the side of the display panel 200 away from the carrier 100, transparent liquids such as water can also be used as the medium.

[0093] S400: A detection connector is provided on one side of the second surface of the stage. The detection connector is controlled to be inserted into the detection hole from the second surface and protrude from the first surface to press against the detection point of the display panel for detection.

[0094] After the display panel 200 is pressed and fixed on the stage 100, the detection connector 300 is inserted from the second surface 102 into the detection hole 104 and pressed against the detection point 203 of the display panel 200 for detection.

[0095] According to the crimping test requirements of the test connector 300, the clamping force acting on the display panel 200 can be precisely controlled by controlling the amount of medium filled in the sealed cavity, so as to ensure that the clamping force can overcome the pressure of the test connector 300 and achieve stable connection test.

[0096] In one embodiment, the following step is included after step S400:

[0097] Release the medium from the sealed cavity, reset the detection connector, open the cover and remove the display panel.

[0098] After the test is completed, the medium in the sealed cavity can be discharged through the vent 403 until the sealed cavity returns to normal pressure. Then, the test connector 300 is reset and the cover 400 is removed, so that the display panel 200 can be taken out or replaced.

[0099] In one application scenario, a robotic arm can be used to automatically remove the cover 400 after the inspection is completed, and to automatically install the cover 400 after the subsequent uninspected display panel 200 is placed. In other application scenarios, the cover 400 can also be removed and installed by other mechanical devices or manual operation, all of which can achieve the effect of this embodiment.

[0100] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A detection device for a display panel, characterized in that, include: The stage has a first surface and a second surface arranged opposite to each other. The first surface is provided with a support area for supporting the display panel. The support area has a detection hole that penetrates the stage in a direction from the first surface toward the second surface. A detection connector is inserted into the detection hole from the second surface. The detection connector is used to expose a detection point of the display panel from the detection hole to connect with the display panel for detecting the display panel. A cover is provided on the first surface, and the orthographic projection of the cover on the first surface covers the bearing area. The cover and the first surface cooperate to form a sealed cavity. The cover includes a top plate and a side plate. The top plate has a third surface facing the platform and a transparent area is formed on the top plate. The orthographic projection of the transparent area on the first surface covers the bearing area. The side plate is disposed around the periphery of the top plate on the third surface and has a fourth surface facing the platform. The fourth surface is in close contact with and sealed to the first surface. A pressurizing component, connected to the sealed cavity, is used to provide pressure to the sealed cavity so that the display panel fits against the bearing area, wherein the light transmittance of the pressurizing medium is greater than 99%, and the pressurizing medium is a liquid; A sealing gasket is stacked between the fourth surface and the first surface. The sealing gasket is fixed to the first surface, and a groove matching the side plate is opened on the end face of the sealing gasket away from the first surface. The side plate is engaged in the groove. A light-transmitting sealing film is located on the first surface, the orthographic projection of the light-transmitting sealing film on the first surface covers the bearing area, and the light-transmitting sealing film is located on the side of the display panel away from the first surface; the orthographic projection of the light-transmitting sealing film on the first surface covers the orthographic projection of the cover on the first surface, and the light-transmitting sealing film is pressed into the slot; the light transmittance of the light-transmitting sealing film is greater than 99%.

2. The detection device according to claim 1, characterized in that, The entire area of ​​the top plate is made of transparent material.

3. The detection device according to claim 1, characterized in that, The pressurization component includes a fan, and the cover has an air hole for filling and releasing gas. The output end of the fan is connected to the air hole.

4. The detection device according to claim 1, characterized in that, The platform is also provided with a vacuum suction hole that penetrates the platform along the direction from the first surface toward the second surface. The orthographic projection of the vacuum suction hole on the first surface is located within the bearing area, and the orthographic projection of the vacuum suction hole on the first surface does not overlap with the orthographic projection of the detection hole on the first surface.

5. The detection device according to any one of claims 1 to 4, characterized in that, The display panel has a display surface and a non-display surface. The detection point of the display panel is located on the non-display surface, and the first surface contacts the non-display surface to support the display panel.

6. A method for detecting a display panel, characterized in that, The detection method is applied to any of the detection devices as described in claims 1 to 5, comprising: The display panel is placed on a platform, wherein the platform has a first surface and a second surface disposed opposite to each other. The first surface is provided with a support area for supporting the display panel. A detection hole is provided on the support area. The detection hole is disposed through the platform along the direction from the first surface toward the second surface, and the orthographic projection of the detection hole on the first surface covers the orthographic projection of the detection point of the display panel on the first surface. A cover is provided on the first surface, the orthographic projection of the cover on the first surface covers the bearing area, and the cover and the first surface cooperate to form a sealed cavity; A medium is introduced into the sealed cavity, so that the display panel is pressed and fixed in the bearing area under the pressure of the medium; A detection connector is provided on one side of the second surface of the stage. The detection connector is controlled to be inserted into the detection hole from the second surface and protrude from the first surface to press against the detection point of the display panel for detection.

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