Demura device of display panel

Abstract

This utility model discloses a Demura device for display panels, including a frame platform and loading / unloading stations, a darkroom, and upper and lower test platform assemblies connected to the frame platform. The upper test platform assembly includes a first linear drive module and a first Demura fixture platform, while the lower test platform assembly includes a second linear drive module, a second Demura fixture platform, and a first lifting drive module. The first and second Demura fixture platforms are each equipped with two sets of test fixtures. In this Demura device, the first and second Demura fixture platforms can be driven independently, allowing them to alternate between the loading / unloading stations and the darkroom. When one Demura fixture platform is driven to the darkroom for Demura operation, the other Demura fixture platform is driven to the loading / unloading station for loading / unloading operation, thereby reducing equipment waiting time, improving the efficiency of display panel Demura operations, and ultimately increasing production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of display panel technology, and specifically relates to a Demura device for a display panel. Background Technology

[0002] Due to the complexity and difficulty in controlling the manufacturing process, display panels are prone to Mura (uniform brightness) during production. This manifests as bright or dark spots, which are patchy marks on the panel caused by differences in brightness, thus reducing the panel's quality. To eliminate Mura, external compensation technology is needed, commonly known as Demura (eliminating panel brightness unevenness). The process of eliminating Mura using Demura technology typically involves: after the display panel is powered on in a darkroom, an optical camera is used to photograph the display image to obtain actual brightness data. Then, compensation parameters for each pixel are calculated based on this data to form Demura data. Finally, the Demura data is burned into the display panel.

[0003] Existing small-scale, single-station Demura devices mainly consist of a Demura fixture platform and a darkroom for testing. The display panels to be tested are manually loaded and unloaded. The process mainly includes: the operator places the display panel to be tested on the Demura fixture platform and crimps the signal wires at the loading / unloading station; the Demura fixture platform sends the display panel into the darkroom for Demura operation; after the Demura operation is completed, the Demura fixture platform moves the display panel to the loading / unloading station; the operator removes the tested display panel from the Demura fixture platform and then places another display panel to be tested. That is, the equipment needs to wait for unloading and loading after each Demura operation, resulting in a long idle time and a need to improve production efficiency. Utility Model Content

[0004] In view of this, the present invention provides a Demura device for display panels, which solves the problem of how to improve the Demura operation efficiency of display panels and thus improve production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A Demura device with a display panel includes a frame platform and loading / unloading stations, a detection darkroom, an upper test platform assembly, and a lower test platform assembly connected to the frame platform. A Demura detection probe assembly is connected to the top of the detection darkroom. The upper test platform assembly includes a first linear drive module and a first Demura fixture platform. The first linear drive module is connected between the loading / unloading station and the testing darkroom, and the first Demura fixture platform is movably connected to the first linear drive module. The lower test platform assembly includes a second linear drive module, a second Demura fixture platform, and a first lifting drive module. The second linear drive module is located below the first linear drive module and extends from directly below the loading / unloading station to directly below the detection darkroom. The first lifting drive module is movably connected to the second linear drive module, and the second Demura fixture platform is vertically connected to the first lifting drive module. The first lifting drive module is configured to drive the second Demura fixture platform to rise to the working plane where the first Demura fixture platform is located or to descend below the first Demura fixture platform. The first Demura fixture platform and the second Demura fixture platform are each equipped with two sets of test fixtures, and the Mura detection probe assembly includes two camera modules corresponding to the two sets of test fixtures.

[0006] In the specific solution, the first Demura fixture platform and the second Demura fixture platform are also equipped with a lighting drive module and a Demura data burning module. Each set of the test fixtures includes a vacuum adsorption fixing component and a wiring component. The vacuum adsorption fixing component is used to support and fix the display panel, and the wiring component is used to electrically connect the display panel to the lighting drive module and the Demura data burning module.

[0007] In the specific design, each set of test fixtures also includes clamping components disposed on two opposite sides of the vacuum adsorption fixing component.

[0008] In the specific solution, the Mura detection probe assembly further includes a second lifting drive module and a first fixed bracket. The second lifting drive module is fixedly connected to the top of the detection dark chamber, and the first fixed bracket is movably connected to the second lifting drive module. The two camera modules are connected to the first fixed bracket.

[0009] In the specific solution, the camera module includes a rotation drive module, a tilt adjustment module, and a CCD camera. The rotation drive module is connected to the first fixed bracket, the tilt adjustment module is rotatably connected to the rotation drive module, and the CCD camera is connected to the tilt adjustment module.

[0010] In the specific solution, the bottom of the darkroom is connected to an illumination assembly, which includes a third lifting drive module, a second fixed bracket, and lighting lamps. The third lifting drive module is connected to the bottom side wall of the darkroom, the second fixed bracket is movably connected to the third lifting drive module, and two lighting lamps are connected to the second fixed bracket and arranged opposite to each other.

[0011] In the specific solution, a barcode scanning mechanism is connected to the outer wall of the detection darkroom facing the loading and unloading station. The barcode scanning mechanism is used to scan the identification code on the display panel to obtain information about the display panel.

[0012] In the specific solution, a plasma air bar is also connected to the outer wall of the detection darkroom facing the loading and unloading station. The plasma air bar is used to blow the display panel to remove static electricity.

[0013] The Demura device for display panels provided in this embodiment includes an upper test platform assembly and a lower test platform assembly connected between the loading / unloading station and the darkroom. The first Demura fixture platform in the upper test platform assembly and the second Demura fixture platform in the lower test platform assembly can be driven independently. The two Demura fixture platforms alternately move between the loading / unloading station and the darkroom. When one Demura fixture platform is driven to the darkroom for Demura operation, the other Demura fixture platform is driven to the loading / unloading station for loading / unloading operation, thereby reducing equipment waiting time, improving the efficiency of display panel Demura operation, and thus improving production efficiency. Furthermore, the first and second Demura fixture platforms are each equipped with two sets of test fixtures, allowing two display panels to be loaded into the darkroom simultaneously for Demura operation, further improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a side view of the Demura device according to an embodiment of the present invention; Figure 2 This is a first-view perspective perspective view of the Demura device according to an embodiment of the present invention; Figure 3 This is a second-view perspective perspective view of the Demura device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the upper test platform assembly according to an embodiment of the present invention; Figure 5 This is a structural diagram of the upper surface portion of the first Demura fixture platform according to an embodiment of the present invention; Figure 6This is a schematic diagram of the structure of the lower test platform assembly according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the camera module according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the lighting component according to an embodiment of the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of this utility model shown in and described with reference to the drawings are merely exemplary, and this utility model is not limited to these embodiments.

[0016] It should be noted that the same or similar reference numerals in the accompanying drawings of the embodiments of this utility model correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0017] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0018] This utility model embodiment provides a Demura device for a display panel, see reference. Figures 1 to 3 The Demura device includes a frame platform 100 and a loading / unloading station 200, a darkroom 300, an upper test platform assembly 1, and a lower test platform assembly 2 connected to the frame platform 100. The top of the darkroom 300 is connected to a Demura detection probe assembly 3.

[0019] It should be noted that, Figures 1 to 3 In order to show the various structural components inside the Demura device, the outer casing of the Demura device and the baffle surrounding the detection dark chamber 300 are omitted in the accompanying drawings.

[0020] In this embodiment, see Figure 4 and Figure 5 and combined Figures 1 to 3 As shown, the upper test platform assembly 1 includes a first linear drive module 11 and a first Demura fixture platform 12. The first linear drive module 11 is connected between the loading / unloading station 200 and the darkroom 300, and the first Demura fixture platform 12 is movably connected to the first linear drive module 11. The first Demura fixture platform 12 is used to load the display panel to be tested, and the first linear drive module 11 is used to drive the first Demura fixture platform 12 to reciprocate between the loading / unloading station 200 and the darkroom 300. The first Demura fixture platform 12 is provided with two sets of test fixtures 12a. Correspondingly, the Demura detection probe assembly 3 includes two camera modules 31 corresponding to the two sets of test fixtures 12a. Therefore, the first Demura fixture platform 12 can load two display panels at a time and send them into the darkroom 300 for simultaneous Demura operation, improving Demura operation efficiency.

[0021] Specifically, the first Demura fixture platform 12 is also equipped with a power-on driving module and a Demura data burning module (not shown in the attached figures). Each set of the test fixtures 12a includes a vacuum adsorption fixing component 121 and a wiring component 122. The vacuum adsorption fixing component 121 is used to support the display panel (e.g., ...). Figure 5 One of the vacuum adsorption fixing components 121 shows a display panel 400) and it is adsorbed and fixed thereon. The wiring component 122 is used to electrically connect the display panel to the lighting drive module and the Demura data programming module. After the operator loads the display panel to be tested onto the vacuum adsorption fixing component 121, the operator connects the signal line of the display panel to the wiring component 122, thereby electrically connecting the display panel to the lighting drive module and the Demura data programming module.

[0022] Furthermore, such as Figure 5 As shown, each set of test fixtures 12a also includes clamping components 123 disposed on two opposite sides of the vacuum adsorption fixing component 121. The clamping components 123 are used to clamp and fix the display panel on the vacuum adsorption fixing component 121 from the side, so that the display panel is more stably supported and fixed.

[0023] In this embodiment, see Figure 6 and combined Figures 1 to 3As shown, the lower test platform assembly 2 includes a second linear drive module 21, a second Demura fixture platform 22, and a first lifting drive module 23. The second linear drive module 21 is located below the first linear drive module 11 and extends from directly below the loading / unloading station 200 to directly below the detection darkroom 300. The first lifting drive module 23 is movably connected to the second linear drive module 21, and the second Demura fixture platform 22 is vertically and vertically connected to the first lifting drive module 23. The first lifting drive module 23 is configured to drive the second Demura fixture platform 22 to rise to the working plane where the first Demura fixture platform 12 is located or to descend below the first Demura fixture platform 12. The second linear drive module 21 drives the first lifting drive module 23 to move the second Demura fixture platform 22 reciprocally between the loading / unloading station 200 and the detection darkroom 300 from below the first linear drive module 11.

[0024] The second Demura fixture platform 22 has the same structure as the first Demura fixture platform 12, and the specific structure of the first Demura fixture platform 12 described above can be found in the previous text.

[0025] In this embodiment, see Figure 7 and combined Figures 1 to 3 As shown, the Mura detection probe assembly 3 further includes a second lifting drive module 32 and a first fixed bracket 33. The second lifting drive module 32 is fixedly connected to the top of the detection dark chamber 300, and the first fixed bracket 33 is movably connected to the second lifting drive module 32. The two camera modules 31 are connected to the first fixed bracket. The second lifting drive module 32 is used to drive the first fixed bracket 33 to lift and lower, thereby causing the camera modules 31 to move up and down, thus adjusting the detection height of the camera modules 31.

[0026] Specifically, the camera module 31 includes a rotation drive module 311, a tilt adjustment module 312, and a CCD camera 312. The rotation drive module 311 is connected to the first fixed bracket 33, the tilt adjustment module 312 is rotatably connected to the rotation drive module 311, and the CCD camera 313 is connected to the tilt adjustment module 312. The tilt adjustment module 312 is used to adjust the tilt angle of the CCD camera 313, that is, to adjust the angle between the optical axis direction of the CCD camera 313 and the normal direction of the display surface of the display panel to be tested. The rotation drive module 311 is used to drive the tilt adjustment module 312 to rotate, thereby driving the CCD camera 313 to rotate, thereby adjusting the shooting position of the CCD camera 313.

[0027] In this embodiment, see Figure 8 and combined Figures 1 to 3 As shown, an illumination assembly 4 is connected to the bottom of the darkroom 300. The illumination assembly 4 includes a third lifting drive module 41, a second fixed bracket 42, and two lighting lamps 43. The third lifting drive module 41 is connected to the bottom side wall of the darkroom 300. The second fixed bracket 42 is movably connected to the third lifting drive module 41. Two lighting lamps 43 are connected to the second fixed bracket 42 and are arranged opposite to each other.

[0028] In this embodiment, a barcode scanning mechanism 5 is connected to the outer wall of the detection darkroom 300 facing the loading / unloading station 200. The barcode scanning mechanism 5 is used to scan the identification code on the display panel to obtain information about the display panel. Furthermore, a plasma air bar 6 is also connected to the outer wall of the detection darkroom 300 facing the loading / unloading station 200. The plasma air bar 6 is located below the barcode scanning mechanism 5 and is used to blow on the display panel to remove static electricity.

[0029] The Demura device with the display panel described above operates by including the following steps: S1. The first Demura fixture platform 12 in the upper test platform assembly 1 is moved to the loading / unloading station 200 for loading operations, including: the operator loading the display panel to be tested onto the first Demura fixture platform 12 and connecting the wiring; the barcode scanning mechanism 5 scanning the identification code on the display panel to obtain information about the currently loaded display panel; and the plasma air bar 6 blowing the display panel to remove static electricity. At this time, the second Demura fixture platform 22 in the lower test platform assembly 2 moves to below the loading / unloading station 200, waiting for the first Demura fixture platform 12 to complete loading.

[0030] S2. After the first Demura fixture platform 12 completes loading, it transfers the loaded display panel to the darkroom 300 for Demura operation. This includes: a lighting drive module driving the display panel on the first Demura fixture platform 12 to light up; a camera module 31 capturing the display image of the display panel; and a Demura data burning module generating Demura data based on the image data captured by the camera module 31 and burning the Demura data to the display image. Simultaneously with the Demura operation on the first Demura fixture platform 12, the first lifting drive module 23 drives the second Demura fixture platform 22 to rise into the loading / unloading station 200 for loading operation. The specific process of the loading operation is the same as in step S1.

[0031] S3. After the second Demura fixture platform 22 is loaded, the first lifting drive module 23 drives the second Demura fixture platform 22 to descend, and the second linear drive module 21 drives the second Demura fixture platform 22 to move below the detection darkroom 300, waiting for the first Demura fixture platform 12 to complete the Demura operation.

[0032] S4. After the first Demura fixture platform 12 completes the Demura operation, the first linear drive module 11 drives the first Demura fixture platform 12 to the loading / unloading station 200, and the first lifting drive module 23 drives the second Demura fixture platform 22 to rise into the detection darkroom 300 to perform the Demura operation. The specific process of the Demura operation is the same as in step S2. While the second Demura fixture platform 22 is performing the Demura operation, the operator unloads the display panel that has been tested in the first Demura fixture platform 12 and reloads it according to step S1.

[0033] S5. After the second Demura fixture platform 22 completes the Demura operation, the first lifting drive module 23 drives the second Demura fixture platform 22 to descend and move back to below the loading / unloading station 200. The first Demura fixture platform 12, after loading is completed, moves again to the detection darkroom 300 to perform the Demura operation.

[0034] Based on the repeated cycle of steps S1 to S5 above, the two Demura fixture platforms alternate between the loading / unloading station 200 and the inspection darkroom 300. When one Demura fixture platform is driven to the inspection darkroom 300 for Demura operation, the other Demura fixture platform is driven to the loading / unloading station 200 for loading / unloading operation, thereby reducing the waiting time of the equipment, improving the Demura operation efficiency of the display panel and thus improving production efficiency.

[0035] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A Demura apparatus of a display panel, characterized by comprising: It includes a frame platform and loading / unloading stations, a detection darkroom, an upper test platform assembly, and a lower test platform assembly connected to the frame platform. The top of the detection darkroom is connected to a Mura detection probe assembly. The upper test platform assembly includes a first linear drive module and a first Demura fixture platform. The first linear drive module is connected between the loading / unloading station and the testing darkroom, and the first Demura fixture platform is movably connected to the first linear drive module. The lower test platform assembly includes a second linear drive module, a second Demura fixture platform, and a first lifting drive module. The second linear drive module is located below the first linear drive module and extends from directly below the loading / unloading station to directly below the detection darkroom. The first lifting drive module is movably connected to the second linear drive module, and the second Demura fixture platform is vertically connected to the first lifting drive module. The first lifting drive module is configured to drive the second Demura fixture platform to rise to the working plane where the first Demura fixture platform is located or to descend below the first Demura fixture platform. The first Demura fixture platform and the second Demura fixture platform are each equipped with two sets of test fixtures, and the Mura detection probe assembly includes two camera modules corresponding to the two sets of test fixtures.

2. The Demura apparatus according to claim 1, characterized by The first Demura fixture platform and the second Demura fixture platform are also equipped with a lighting drive module and a Demura data programming module. Each set of the test fixtures includes a vacuum adsorption fixing component and a wiring component. The vacuum adsorption fixing component is used to support and adsorb the display panel, and the wiring component is used to electrically connect the display panel to the lighting drive module and the Demura data programming module.

3. The Demura apparatus according to claim 2, characterized by Each set of test fixtures also includes clamping components disposed on two opposite sides of the vacuum adsorption fixing assembly.

4. The Demura apparatus according to claim 1, characterized by The Mura detection probe assembly also includes a second lifting drive module and a first fixed bracket. The second lifting drive module is fixedly connected to the top of the detection dark chamber, and the first fixed bracket is movably connected to the second lifting drive module. The two camera modules are connected to the first fixed bracket.

5. The Demura apparatus according to claim 4, wherein The camera module includes a rotation drive module, a tilt adjustment module, and a CCD camera. The rotation drive module is connected to the first fixed bracket, the tilt adjustment module is rotatably connected to the rotation drive module, and the CCD camera is connected to the tilt adjustment module.

6. The Demura apparatus according to claim 1, wherein The bottom of the darkroom is connected to an illumination assembly, which includes a third lifting drive module, a second fixed bracket, and lighting lamps. The third lifting drive module is connected to the bottom side wall of the darkroom. The second fixed bracket is movably connected to the third lifting drive module. Two lighting lamps are connected to the second fixed bracket and are arranged opposite to each other.

7. The Demura apparatus according to claim 1, wherein The detection darkroom is connected with a code scanning mechanism on the outer side wall facing the loading and unloading station, and the code scanning mechanism is used for scanning the identification code on the display panel to obtain the information of the display panel.

8. The Demura apparatus according to claim 7, wherein The detection darkroom is also connected with a plasma wind rod on the outer side wall facing the loading and unloading station, and the plasma wind rod is used for blowing the display panel to remove static electricity.

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