CN108648673B - OTP+demura compensation equipment for OLED display screen - Google Patents
OTP+demura compensation equipment for OLED display screen Download PDFInfo
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- CN108648673B CN108648673B CN201810735072.9A CN201810735072A CN108648673B CN 108648673 B CN108648673 B CN 108648673B CN 201810735072 A CN201810735072 A CN 201810735072A CN 108648673 B CN108648673 B CN 108648673B
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- 238000012360 testing method Methods 0.000 claims abstract description 75
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 47
- 238000009434 installation Methods 0.000 claims description 37
- 230000006698 induction Effects 0.000 claims description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
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- 238000010168 coupling process Methods 0.000 claims 4
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- 238000010586 diagram Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 8
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention discloses OTP+demura compensation equipment for an OLED display screen, which comprises a test platform, wherein the test platform is connected with a jig mounting plate through a power rotating device, the jig mounting plate can rotate around the axis of the jig mounting plate under the action of the power rotating device, a plurality of OLED lighting test jigs are rotationally symmetrically arranged on the jig mounting plate, a workpiece replacing station, an OTP test station and a Mura compensation station are arranged beside the jig mounting plate, the OTP test station is provided with the OTP test device, and the Mura compensation station is provided with the Mura compensation device. The one-stop synchronous detection compensation device is simple in structure and convenient to use, is integrated in one test platform through the OTP test device and the Mura compensation device and is matched with the rotatable jig mounting plate, so that one-stop synchronous detection compensation of the OTP and the demra of the OLED panel is realized, and the detection compensation efficiency of the OLED panel is greatly improved.
Description
Technical Field
The invention relates to OLED display screen compensation equipment, belongs to the technical field of OLED display panel detection, and particularly relates to OTP+demura compensation equipment for an OLED display screen.
Background
In recent years, with the rapid popularization of home televisions, consumers have also made higher and higher demands on the pictures of liquid crystal television display screens, so that the quality of the liquid crystal television display screens has also been higher and higher. The liquid crystal display television display screen panel has complex production process and high control difficulty, is easy to cause Mura phenomenon (uneven brightness) in the production process, and has bright spots or dark spots, namely, the regional blocky trace phenomenon caused by the difference of display brightness of a certain area of the panel, so that the quality grade of the panel is reduced. In order to eliminate the Mura phenomenon, an OTP (One Time Program) detection technology and a demux (eliminate panel brightness unevenness) technology of the OLED display screen have been developed.
In the prior art, the OTP detection technology and the Demura technology are generally operated by manual inches of personnel, so that the test result may have deviation; meanwhile, OTP detection and Demura of the OLED panel are required to be completed by two independent testing stations, so that the testing efficiency is low.
Furthermore, in the prior art, when the display Mura is eliminated by using the Demura technology, manual adjustment is generally performed in a darkroom, so that the defects of less degree of freedom, large limitation, easiness in causing detection errors and the like exist. A Mura compensation system and method for a display screen is disclosed in chinese patent specification CN107086021 a. The Mura compensation system of the display screen can comprise a darkroom, a camera horizontal/XY direction displacement adjustment shaft, a camera vertical direction adjustment shaft, a CCD camera, a fixed base station, a shockproof table and a data terminal. Wherein the camera horizontal/XY direction displacement adjustment axis may be used to adjust the horizontal displacement of the CCD camera, e.g., to move left or right, to adjust the CCD camera to capture image data of a target area of a display screen placed on a fixed base. The camera vertical direction adjustment axis may be used to adjust the vertical displacement of the CCD camera, e.g., move downward or upward, to adjust the vertical distance between the CCD camera and the display screen placed on the fixed base. The camera horizontal/XY direction displacement adjustment shaft, the camera vertical direction adjustment shaft, the CCD camera, the fixed base and the vibration-proof table may be all disposed in the darkroom, and the data terminal may be disposed outside the darkroom. The technical scheme has the following technical problems: firstly, the invention does not disclose a complete technical scheme of an automatic detection mechanism, only three degrees of freedom of a CCD camera can be known according to the description of the comparison document, and the driving of the CCD camera is not disclosed; secondly, if the position height of the CCD camera is adjusted by adopting the adjusting mechanism, focusing is inevitably inaccurate due to amplitude modulation, and meanwhile, the camera is possibly damaged; finally, the three degrees of freedom CCD camera cannot meet the required test accuracy of the Mura compensation system.
Disclosure of Invention
Aiming at the defects existing in the prior art, the technical problem to be solved by the invention is to provide OTP+demux compensation equipment for an OLED display screen, which can realize OTP+demux compensation on the OLED display screen through one OTP+demux compensation equipment, thereby improving the production efficiency.
In order to solve the technical problem, the OTP+demura compensation equipment for the OLED display screen comprises a test platform, wherein the test platform is connected with a jig mounting plate through a power rotating device, the jig mounting plate can rotate around an axis of the jig mounting plate under the action of the power rotating device, a plurality of OLED lighting test jigs are rotationally symmetrically arranged on the jig mounting plate, a workpiece replacing station, an OTP test station and a Mura compensation station are arranged beside the jig mounting plate, the OTP test station is provided with the OTP test device, and the Mura compensation station is provided with the Mura compensation device.
In a preferred embodiment of the invention, four OLED lighting test jigs are rotationally symmetrically arranged on the jig mounting plate, two workpiece changing stations, an OTP test station and a Mura compensation station are rotationally symmetrically arranged beside the jig mounting plate, an OTP test device is arranged on the OTP test station, and a Mura compensation device is arranged on the Mura compensation station.
In a preferred embodiment of the invention, the OTP test station is disposed adjacent to or opposite the Mura compensation station.
In a preferred embodiment of the invention, the Mura compensation device comprises a rack and a CCD camera, wherein a transplanting module for driving the CCD camera to move along a vertical Z axis is arranged on the rack, the movable end of the transplanting module is connected with a connecting frame, and the CCD camera is connected below the connecting frame; a first linear sliding table, a second linear sliding table, a swinging sliding table and a gear focusing mechanism, wherein the first linear sliding table is coaxially arranged between the connecting frame and the CCD camera and used for driving the CCD camera to move along a horizontal X axis, the second linear sliding table is used for driving the CCD camera to move along a vertical Z axis, the swinging sliding table is used for driving the CCD camera to rotate around the horizontal X axis and the Z axis, and the gear focusing mechanism is used for adjusting the focal length of the CCD camera; the gear focusing mechanism comprises a base, a driving source, a driving gear and a driven gear; the base is connected with the swing sliding table, the CCD camera and the driving source are fixedly connected on the base, the output end of the driving source is fixedly connected with the driving gear, the driven gear is fixedly connected at the focusing position of the CCD camera, and the driving gear and the driven gear are meshed for transmission.
In a preferred embodiment of the present invention, a focusing limiting mechanism is further provided between the CCD camera and the gear focusing mechanism.
In a preferred embodiment of the invention, the focusing limiting mechanism comprises a photoelectric sensor fixedly connected to the lower end of the base and an induction ring coaxially arranged with the driving gear, wherein the induction ring comprises an induction part for limiting the cooperation of the photoelectric sensor and a connecting part for sleeving and connecting the output end of the driving source.
In a preferred embodiment of the invention, the connecting part is sleeve-shaped, the inner diameter of the sleeve-shaped connecting part corresponds to the outer diameter of the output end of the driving source, and the sleeve-shaped connecting part is provided with a plurality of threaded holes for fixing the induction ring along the radial direction of the connecting part.
In a preferred embodiment of the present invention, the number of the photosensors is two, and the two photosensors are arranged vertically up and down; the number of the induction rings is two, and an included angle exists between the induction parts on the two induction rings.
In a preferred embodiment of the invention, the drive source is cooperatively coupled to the base by a mounting guide.
In a preferred embodiment of the present invention, the installation guiding structure comprises a vertical installation guiding plate, a horizontal installation guiding plate and a U-shaped connecting plate, wherein the vertical installation guiding plate is vertically and fixedly connected to the upper end of the base, a waist-shaped hole which is used for connecting the horizontal installation guiding plate and is arranged along the Z-axis direction is formed in the vertical installation guiding plate, the horizontal installation guiding plate is fixedly connected with the vertical installation guiding plate through a bolt, a waist-shaped hole which is used for connecting the U-shaped connecting plate and is arranged along the Y-axis direction is formed in the horizontal installation guiding plate, the horizontal installation guiding plate is connected to the lower end of the horizontal installation guiding plate through a bolt, and the driving source is fixedly connected to the U-shaped connecting plate.
In a preferred embodiment of the invention, the end part of the U-shaped connecting plate is fixedly connected with a focusing limiting mechanism.
In a preferred embodiment of the invention, the movable end of the transplanting module is fixedly connected with the fixed end of the first linear sliding table, the movable end of the first linear sliding table is connected with the fixed end of the second linear sliding table, the movable end of the second linear sliding table is connected with the fixed end of the swinging sliding table, and the movable end of the swinging sliding table is connected with the gear focusing mechanism.
In a preferred embodiment of the invention, the movable end of the transplanting module is fixedly connected with the fixed end of the second linear sliding table, the movable end of the second linear sliding table is connected with the fixed end of the first linear sliding table, the movable end of the first linear sliding table is connected with the fixed end of the swinging sliding table, and the movable end of the swinging sliding table is connected with the gear focusing mechanism.
In a preferred embodiment of the invention, the OLED lighting test fixture includes an OLED positioning carrier with a conducting device, an OLED position fine tuning device and a PG test box, the OLED positioning fixture is fixedly connected to the upper end of the fixture mounting board through the OLED position fine tuning device, and the PG test box is electrically connected with the OLED positioning carrier through the conducting device.
In a preferred embodiment of the invention, the OLED position fine adjustment device comprises a rotating table for driving the OLED positioning carrier to rotate around the axis thereof, a linear sliding table module for driving the OLED positioning carrier to move along the horizontal X axis and the Y axis, and a swinging sliding table module for driving the OLED positioning carrier to rotate around the horizontal X axis and the Y axis.
In a preferred embodiment of the present invention, the OTP test device includes a fixing support, a Y-direction linear sliding table, an X-direction linear sliding table, a Z-direction linear sliding table, and a color analyzer, where the fixing support is vertically and fixedly connected to the upper end of the fixture mounting plate, the fixed end of the Y-direction linear sliding table is connected to the fixing support, the movable end of the Y-direction linear sliding table is connected to the fixed end of the X-direction linear sliding table, the movable end of the X-direction linear sliding table is connected to the fixed end of the Z-direction linear sliding table, and the movable end of the Z-direction linear sliding table is connected to the color analyzer.
The beneficial effects of the invention are as follows: the one-stop synchronous detection compensation device is simple in structure and convenient to use, is integrated in one test platform through the OTP test device and the Mura compensation device and is matched with the rotatable jig mounting plate, so that one-stop synchronous detection compensation of the OTP and the demra of the OLED panel is realized, and the detection compensation efficiency of the OLED panel is greatly improved; furthermore, 4 rotationally symmetrical OLED lighting test jigs are designed on the jig mounting plate, and a workpiece loading station, a workpiece unloading station, an OTP test station and a Mura compensation station which are rotationally symmetrical are matched, so that the jig mounting plate is an integrated platform, and is convenient to transport and use; furthermore, the invention can enable the CCD camera to displace along the X axis and the Z axis, rotate around the X axis and the Z axis, realize full-automatic adjustment, and have a focal length adjusting mechanism, thereby avoiding inaccurate focusing and damage to the camera caused by overlarge adjustment amplitude of the CCD camera along the Z axis; furthermore, the full-automatic focusing precision and speed of the CCD camera are effectively improved through the transplanting module for primarily and coarsely adjusting the distance between the CCD camera and the liquid crystal panel to be measured, the second linear sliding table for primarily and finely adjusting the distance between the CCD camera and the liquid crystal panel to be measured and the gear focusing mechanism for secondarily and finely adjusting the distance between the CCD camera and the liquid crystal panel to be measured; according to the invention, the transplanting module, the linear sliding table and the swinging sliding table are arranged on the rack and are matched with the gear focusing mechanism, so that the CCD camera can move and rotate along the X-axis and Z-axis directions, a plurality of degrees of freedom are provided for the CCD camera, and the change of the spatial position and the pitch angle of the CCD camera in the detection process is facilitated; furthermore, the invention controls the focusing precision of the CCD camera through the pair of meshed external gears, thereby omitting a mechanism for driving the CCD camera to displace, which is arranged along the Z-axis direction, of the traditional Demura detection mechanism, reducing the volume and the quality of the Demura detection mechanism and improving the focusing precision of the CCD camera; furthermore, in order to prevent the internal parts of the camera from being damaged due to excessive adjustment of the focusing mechanism, a set of focusing limiting mechanism is arranged between the CCD camera and the gear focusing mechanism, and the focusing limiting mechanism comprises a photoelectric sensor and an induction ring, so that the rotation angle of the focusing mechanism can be effectively controlled; furthermore, in order to facilitate the reasonable selection of the focusing range according to different working conditions, the number of the photoelectric sensors and the sensing rings in the focusing limiting mechanism is 2, the sensing rings are sleeved on the output end of the driving source, and the included angle between the sensing parts on the two sensing rings is adjustable, so that the control of the focal length adjusting range of the CCD camera is realized; furthermore, the linear sliding table, the swinging sliding table and the first linear sliding table are all existing products, are directly purchased for assembly and use, and are not required to be designed independently; furthermore, the installation guide structure is arranged between the driving source and the base, so that the adjustment and the use of the installation position of the driving gear are facilitated; furthermore, the OLED position fine adjustment device is arranged at the lower end of the OLED positioning carrier, so that the positioning and the detection of the OLED panel are facilitated; furthermore, the OTP test device has the structural design that OTP detection can be performed on various types of OLED panels in a full-automatic, efficient and rapid manner.
Drawings
FIG. 1 is a schematic diagram of an OTP+demura compensation device for OLED display according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a transplanting module of an OTP+demura compensation device for an OLED display according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a connection frame of an OTP+demura compensation apparatus for OLED display and devices mounted on the connection frame according to an embodiment of the present invention;
FIG. 4 is an isometric view of a focus limit mechanism in an OTP+demura compensation apparatus for OLED display screens according to an embodiment of the invention;
FIG. 5 is a front view of a focus limit mechanism in an OTP+demura compensation apparatus for OLED display according to an embodiment of the invention;
FIG. 6 is a schematic structural diagram of an OLED lighting test fixture in an OTP+demura compensation apparatus for an OLED display according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of an OLED position trimming device in an OTP+demura compensation apparatus for an OLED display according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an OLED positioning carrier in an OTP+demura compensation apparatus for OLED display according to an embodiment of the present invention;
FIG. 9 is a schematic diagram showing signal connection of an OLED lighting test fixture in an OTP+demura compensation apparatus for an OLED display according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of an OTP test device in an OTP+demura compensation apparatus for an OLED display according to an embodiment of the invention;
FIG. 11 is a schematic diagram of a fixture mounting board in an OTP+demura compensation apparatus for OLED display according to an embodiment of the invention;
in the figure: 1-a frame; a 2-CCD camera; 3-transplanting module; 4-connecting frames; 5-a first linear sliding table; 6-swinging a sliding table; 7-a gear focusing mechanism; 8-a second linear sliding table; 9-focusing limiting mechanism; 10-vertically mounting a guide plate; 11-horizontally mounting guide plates; a 12-U-shaped connecting plate; 13-OLED positioning carrier; 14-OLED position fine adjustment device; 15-PG test box; 16-fixing a bracket; 17-darkroom; 18-Y direction linear sliding table; 19-X direction linear sliding table; 20-Z direction linear sliding table; 21-color analyzer; 7.1-a base; 7.2-a drive source; 7.3-a drive gear; 7.4-driven gears; 9.1-a photosensor; a 2-induction loop; 9.2-1-sensing part; a 2-2-linkage; 14-1-rotating a bearing platform; 14-2-linear slipway module; 14-3-swinging slipway module; a-a test platform; b-a power rotation device; c-a jig mounting plate; D-OLED lighting test fixture; E-OTP test device; F-Mura compensation device.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The OTP+demura compensating device for the OLED display screen shown in the attached drawings 1-2 of the specification comprises a test platform A, wherein the test platform A is connected with a jig mounting plate C through a power rotating device B (which can be a divider), the jig mounting plate C can rotate around the axis of the jig mounting plate C under the action of the power rotating device B, a plurality of OLED lighting test jigs D are rotationally symmetrically arranged on the jig mounting plate C, a part changing station, an OTP test station and a Mura compensating station are arranged beside the jig mounting plate C, an OTP test device E is arranged on the OTP test station, and a Mura compensating device F is arranged on the Mura compensating station; each OTP test device E correspondingly detects an OLED panel on one OLED lighting test fixture D, each Mura compensation device F correspondingly compensates the OLED panel of one OLED lighting test fixture D, and the two OLED panels can work simultaneously, but the OLED panel must be rotated to the Mura compensation station for demux compensation after the detection of the OTP test station is completed. In a specific embodiment shown in fig. 1 of the present invention, 4 OLED lighting test tools D are rotationally symmetrically disposed on a tool mounting board C, 2 workpiece changing stations, 1 OTP test station and 1 Mura compensation station are rotationally symmetrically disposed beside the tool mounting board C, 1 OTP test device E is disposed on the OTP test station, and one Mura compensation device F is disposed on the Mura compensation station. The OTP test station is disposed adjacent to or opposite the Mura compensation station.
The Mura compensation device F is matched with the OLED lighting test fixture D for use, and comprises a frame 1 and a CCD camera 2 which are arranged in a darkroom 17, wherein a transplanting module 3 for driving the CCD camera 2 to move along a vertical Z axis is arranged on the frame 1, the transplanting module 3 belongs to the prior art, a connecting frame 4 is connected to the movable end of the transplanting module 3, and the CCD camera 2 is connected to the lower part of the connecting frame 4; a first linear sliding table 5 which is coaxially arranged and used for driving the CCD camera 2 to move along a horizontal X axis, a second linear sliding table 8 which is used for driving the CCD camera 2 to move along a vertical Z axis, a swinging sliding table 6 which is used for driving the CCD camera 2 to rotate around the horizontal X axis and the Z axis and a gear focusing mechanism 7 which is used for adjusting the focal length of the CCD camera 2 are arranged between the connecting frame 4 and the CCD camera 2, and the positions of the first linear sliding table 5 and the second linear sliding table 8 can be interchanged; the gear focusing mechanism 7 comprises a base 7.1, a driving source 7.2, a driving gear 7.3 and a driven gear 7.4; the base 7.1 is fixedly connected to the lower end of the swing sliding table 6, the base 7.1 is fixedly connected with the CCD camera 2 and the driving source 7.2, the output end of the driving source 7.2 is fixedly connected with the driving gear 7.3, the focusing part of the CCD camera 2 is fixedly connected with the driven gear 7.4, and the driving gear 7.3 and the driven gear 7.4 are meshed for transmission. It should be noted that the first linear slide 5, the swing slide 6, and the second linear slide 8 described above are all of the prior art.
In order to prevent damage to internal parts of a camera caused by overlarge angle adjustment of a CCD camera focusing mechanism, a focusing limiting mechanism 9 is further arranged between the CCD camera 2 and the gear focusing mechanism 7, the focusing limiting mechanism 9 comprises a photoelectric sensor 9.1 fixedly connected to the lower end of a base 7.1 and an induction ring 9.2 coaxially arranged with a driving gear 7.3, the induction ring 9.2 comprises an induction part 9.2-1 matched with the photoelectric sensor 9.1 and a connecting part 9.2-2 sleeved with the output end of a driving source 7.2, the connecting part 9.2-2 is of a sleeve-shaped structure, and a through hole radially arranged along the connecting part is formed in the middle of the connecting part for fixing the output end of the driving source 7.2; the sensing portion 9.2-1 is engaged with the photosensor 9.1, so that the focusing range of the gear focusing mechanism 7 can be preset. Further, in order to adapt to various working conditions, the invention can quickly and conveniently adjust the focusing range of the gear focusing mechanism 7, and the two photoelectric sensors 9.1 are arranged vertically along the vertical direction; the number of the sensing rings 9.2 is two, and an included angle exists between the sensing parts 9.2-1 on the two sensing rings 9.2, so that the focusing range of the gear focusing mechanism 7 is enlarged.
Further, in order to facilitate the installation and debugging of the driving gear 7.3 of the present invention, the driving source 7.2 of the present invention is cooperatively connected with the base 7.1 through an installation guiding structure; the installation guide structure comprises a vertical installation guide plate 10, a horizontal installation guide plate 11 and a U-shaped connecting plate 12, wherein the vertical installation guide plate 10 is vertically and fixedly connected to the upper end of the base 7.1, a waist-shaped hole which is used for connecting the horizontal installation guide plate 11 and is arranged along the Z-axis direction is formed in the vertical installation guide plate 10, the horizontal installation guide plate 11 is fixedly connected with the vertical installation guide plate 10 through a bolt, a waist-shaped hole which is used for connecting the U-shaped connecting plate 12 and is arranged along the Y-axis direction is formed in the horizontal installation guide plate 11, the horizontal installation guide plate 11 is connected to the lower end of the horizontal installation guide plate 11 through a bolt, and a driving source 7.2 is fixedly connected on the U-shaped connecting plate 12; the end part of the U-shaped connecting plate 12 is fixedly connected with a focusing limiting mechanism 9.
The Demura mode of operation is as follows:
the transplanting module 3 is fixed on the frame 1, and the transplanting module 3 is used for driving the first linear sliding table 5, the second linear sliding table 8, the swinging sliding table 10 and the CCD camera 2 to generate a position for coarsely adjusting the CCD camera 2 in the Z-axis direction; the first linear sliding table 5 is used for driving the CCD camera 2 to generate displacement in the X-axis direction; the second linear sliding table 8 is used for driving the CCD camera 2 to generate Z-axis direction displacement to finely adjust the position of the CCD camera 2 once; the CCD camera 2 can rotate around X, Y shafts respectively under the action of the swinging sliding table 6; the driving source 7.2 acts on the external gear mechanism to drive the CCD camera 2 to move up and down, and the focal length of the CCD camera 2 is finely adjusted for the second time.
In sum, the mechanism can enable the CCD camera 2 to generate displacement along the X-axis direction and the Z-axis direction, and enable the CCD camera 2 to rotate around the X-axis and the Z-axis, compared with the traditional Demura detection mechanism, the mechanism has powerful function, is fully automatically adjusted, and is provided with a focal length adjusting limiting device, so that the excessive adjustment amplitude and the damage to the camera are avoided.
The OLED lighting test fixture D comprises an OLED positioning carrier 13 with a conducting device, an OLED position fine tuning device 14 and a PG test box 15, wherein a groove 13-1 for installing an OLED panel and a vacuum adsorption hole 13-2 for adsorbing the OLED panel are formed in the OLED positioning carrier 13, the shape of the groove corresponds to that of the OLED panel, the OLED positioning carrier 13 is fixedly connected to the upper end of a fixture mounting plate C through the OLED position fine tuning device 14, and the PG test box 15 is electrically connected with the OLED positioning carrier 13 through the conducting device. The OLED position fine adjustment device 14 includes a rotation bearing platform 14-1 coaxially arranged for driving the OLED positioning carrier 13 to rotate around its own axis, a linear sliding table module 14-2 for driving the OLED positioning carrier 13 to move along the horizontal X-axis and the Y-axis, and a swinging sliding table module 14-3 for driving the OLED positioning carrier 13 to rotate around the horizontal X-axis and the Y-axis. Since the OLED positioning carrier 13 is adjustable along the horizontal Y-axis due to the OLED position fine adjustment device 14, the Mura compensation device F of the present invention only needs to be adjustable along the X-axis and the Z-axis.
The OTP test device E comprises a fixed support 16, a Y-direction linear sliding table 18, an X-direction linear sliding table 19, a Z-direction linear sliding table 20 and a color analyzer 21, wherein the fixed support 16 is vertically and fixedly connected to the upper end of a jig mounting plate C, the fixed end of the Y-direction linear sliding table 18 is connected with the fixed support 16, the movable end of the Y-direction linear sliding table 18 is connected with the fixed end of the X-direction linear sliding table 19, the movable end of the X-direction linear sliding table 19 is connected with the fixed end of the Z-direction linear sliding table 20, and the movable end of the Z-direction linear sliding table 20 is connected with the color analyzer 21.
It should be understood that the foregoing is only illustrative of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be easily contemplated by those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. An otp+demura compensation device for an OLED display, characterized by: the device comprises a test platform (A), wherein the test platform (A) is connected with a jig mounting plate (C) through a power rotating device (B), the jig mounting plate (C) can rotate around an axis thereof under the action of the power rotating device (B), a plurality of OLED lighting test jigs (D) are rotationally symmetrically arranged on the jig mounting plate (C), a workpiece replacing station, an OTP test station and a Mura compensation station are arranged beside the jig mounting plate (C), an OTP test device (E) is arranged on the OTP test station, and a Mura compensation device (F) is arranged on the Mura compensation station; the Mura compensation device (F) comprises a darkroom (17), a rack (1) and a CCD (charge coupled device) camera (2) are arranged in the darkroom (17), a transplanting module (3) for driving the CCD camera (2) to move along a vertical Z axis for realizing one-time coarse adjustment of the distance between the CCD camera and a liquid crystal panel to be tested is arranged on the rack (1), a connecting frame (4) is connected to the movable end of the transplanting module (3), and the CCD camera (2) is connected to the lower part of the connecting frame (4); a first linear sliding table (5) which is coaxially arranged and used for driving the CCD camera (2) to move along a horizontal X axis, a second linear sliding table (8) which is used for driving the CCD camera (2) to move along a vertical Z axis and finely adjust the distance between the CCD camera and a liquid crystal panel to be tested, a swinging sliding table (6) which is used for driving the CCD camera (2) to rotate around the horizontal X axis and the Z axis, and a gear focusing mechanism (7) which is used for finely adjusting the focal length of the CCD camera (2) for the second time are arranged between the connecting frame (4) and the CCD camera (2); the gear focusing mechanism (7) comprises a base (7.1), a driving source (7.2), a driving gear (7.3) and a driven gear (7.4); the base (7.1) with swing slip table (6) are connected, rigid coupling has on base (7.1) CCD camera (2) with actuating source (7.2), the output of actuating source (7.2) with driving gear (7.3) rigid coupling, the focusing department rigid coupling of CCD camera (2) has driven gear (7.4), driving gear (7.3) with driven gear (7.4) meshing transmission, OLED test fixture (D) are including OLED positioning carrier (13) with switching on device, OLED position micromatic setting (14) and PG test box (15).
2. An otp+demura compensation device according to claim 1, wherein: the OLED lighting test fixture comprises a fixture mounting plate (C), wherein four OLED lighting test fixtures (D) are rotationally symmetrically arranged on the fixture mounting plate (C), two workpiece changing stations, an OTP test station and a Mura compensation station are rotationally symmetrically arranged beside the fixture mounting plate (C), an OTP test device (E) is arranged on the OTP test station, and a Mura compensation device (F) is arranged on the Mura compensation station.
3. An otp+demura compensation device for OLED display according to claim 2, wherein: the OTP test station is disposed adjacent to or opposite the Mura compensation station.
4. An otp+demura compensation device according to claim 1, wherein: a focusing limiting mechanism (9) is further arranged between the CCD camera (2) and the gear focusing mechanism (7); the focusing limiting mechanism (9) comprises a photoelectric sensor (9.1) fixedly connected to the lower end of the base (7.1) and an induction ring (9.2) coaxially arranged with the driving gear (7.3), wherein the induction ring (9.2) comprises an induction part (9.2-1) used for limiting the cooperation of the photoelectric sensor (9.1) and a connecting part (9.2-2) used for sleeving and connecting the output end of the driving source (7.2).
5. An otp+demura compensation device according to claim 4, wherein: the number of the photoelectric sensors (9.1) is two, and the two photoelectric sensors (9.1) are arranged up and down along the vertical direction; the number of the induction rings (9.2) is two, and an included angle exists between the induction parts (9.2-1) on the two induction rings (9.2).
6. An otp+demura compensation device according to claim 1, wherein: the driving source (7.2) is connected with the base (7.1) in a matched manner through a mounting guide structure; the installation guide structure comprises a vertical installation guide plate (10), a horizontal installation guide plate (11) and a U-shaped connecting plate (12), wherein the vertical installation guide plate (10) is vertically and fixedly connected to the upper end of the base (7.1), a waist-shaped hole which is used for connecting the horizontal installation guide plate (11) and is arranged along the Z-axis direction is formed in the vertical installation guide plate (10), the horizontal installation guide plate (11) is fixedly connected with the vertical installation guide plate (10) through a bolt, a waist-shaped hole which is used for connecting the U-shaped connecting plate (12) and is arranged along the Y-axis direction is formed in the horizontal installation guide plate (11), the horizontal installation guide plate (11) is connected to the lower end of the horizontal installation guide plate (11) through a bolt, and the driving source (7.2) is fixedly connected to the U-shaped connecting plate (12); the end part of the U-shaped connecting plate (12) is fixedly connected with a focusing limiting mechanism (9).
7. An otp+demura compensation device according to any of claims 1-3, characterized in that: the OLED positioning carrier (13) is fixedly connected to the upper end of the jig mounting plate (C) through the OLED position fine adjustment device (14), and the PG test box (15) is electrically connected with the OLED positioning carrier (13) through the conducting device.
8. An otp+demura compensation device according to claim 7, wherein: the OLED position fine adjustment device (14) comprises a rotary bearing platform (14-1) which is coaxially arranged and used for driving the OLED positioning carrier (13) to rotate around the axis of the OLED positioning carrier, a linear sliding table module (14-2) which is used for driving the OLED positioning carrier (13) to move along the horizontal X axis and the Y axis, and a swinging sliding table module (14-3) which is used for driving the OLED positioning carrier (13) to rotate around the horizontal X axis and the Y axis.
9. An otp+demura compensation device according to any of claims 1-3, characterized in that: OTP testing arrangement (E) include fixed bolster (16), Y to sharp slip table (18), X to sharp slip table (19), Z to sharp slip table (20) and color analyzer (21), fixed bolster (16) perpendicular rigid coupling in tool mounting panel (C) upper end, Y to the stiff end of sharp slip table (18) with fixed bolster (16) are connected, Y to the expansion end of sharp slip table (18) with X to the stiff end of sharp slip table (19) is connected, X to the expansion end of sharp slip table (19) with Z to the stiff end of sharp slip table (20) is connected, Z to the expansion end of sharp slip table (20) with color analyzer (21) is connected.
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| CN201810735072.9A CN108648673B (en) | 2018-07-06 | 2018-07-06 | OTP+demura compensation equipment for OLED display screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109493767A (en) * | 2018-10-30 | 2019-03-19 | 合肥市商巨智能装备有限公司 | Mura defects compensate device and method |
| CN109493799B (en) * | 2018-11-29 | 2020-09-29 | 昆山国显光电有限公司 | Auxiliary method and device for one-time programmable (OTP) adjustment of display panel |
| CN110534045B (en) * | 2019-08-20 | 2022-11-29 | 武汉精立电子技术有限公司 | Efficient Demura process operation method and system |
| CN110723478A (en) * | 2019-09-27 | 2020-01-24 | 苏州精濑光电有限公司 | Display panel overhauls device |
| CN111312131B (en) * | 2020-03-13 | 2022-10-28 | 苏州精濑光电有限公司 | Screen detection device |
| CN111326091B (en) * | 2020-03-13 | 2022-09-27 | 苏州精濑光电有限公司 | Screen overhauls device |
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