CN105824140B - A kind of display module maintenance unit and method for maintaining - Google Patents
A kind of display module maintenance unit and method for maintaining Download PDFInfo
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- CN105824140B CN105824140B CN201610366050.0A CN201610366050A CN105824140B CN 105824140 B CN105824140 B CN 105824140B CN 201610366050 A CN201610366050 A CN 201610366050A CN 105824140 B CN105824140 B CN 105824140B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008439 repair process Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 37
- 238000012545 processing Methods 0.000 claims description 31
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 238000012360 testing method Methods 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 20
- 238000007689 inspection Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a kind of display module maintenance unit and method for maintaining, improve maintenance activity process to realize, improve working efficiency and reduce material waste purpose.The display module maintenance unit, including carrying platform, the carrier being set on the carrying platform and support portion and the maintenance portion being set on the carrier；The support portion is used to support the one side backwards to the display panel of the backlight module, and the angle of display surface and horizontal plane for adjusting the display panel；The maintenance portion repairs the display panel when meeting the requirements for the display surface of the display panel and the angle of horizontal plane.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module maintenance device and a maintenance method.
Background
In a manufacturing process of a Liquid Crystal Display (TFT-LCD), a Display defect may occur. The common display defects of the display panel mainly comprise line defects and point defects, and the defect maintenance operation is mainly focused on the aspects that the line defects are converted into the point defects, namely the line defects are converted into the point defects through the maintenance operation, so that the defect range is reduced; secondly, converting the bright spot defects into dark spot defects, namely converting the bright spot defects with larger influence on the vision into the dark spot defects with smaller influence on the vision through maintenance operation; and thirdly, converting the bright spot defect or the dark spot defect into a normal spot, namely realizing normal display on both the bright spot defect and the dark spot defect through maintenance operation. One of the reasons for the occurrence of the display failure is various material residues in the manufacturing process, which destroy the structure of the normal thin film transistor and bring about electrical anomalies, and the improvement of the display effect can be achieved by cutting or isolating the residues.
The laser repair principle is to cut off a material residue, which is one of causes of a defect, by using a laser beam having a specific area and energy, or to treat a spot defect as a dark spot having no visibility through a bright spot having a high visibility in combination with the display principle. The specific implementation modes are various, such as residual direct cutting, mutual welding of different materials and the like.
In the prior art, when the display panel is maintained, the laser maintenance equipment only supports the components with high levelness, so that the display panel needs to be disassembled from the display module to maintain the display panel independently. However, the operation flow of disassembling the display module is complicated, so the working efficiency is low, and the material is damaged more when the display module is disassembled, thereby causing great waste.
Disclosure of Invention
The invention aims to provide a display module maintenance device and a maintenance method, which aim to improve the maintenance operation flow, improve the working efficiency and reduce the material waste.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides a maintenance device for a display module, wherein the display module is provided with a display panel and a backlight module, and the maintenance device comprises a bearing platform, a bearing frame and a supporting part which are arranged on the bearing platform, and a maintenance part arranged on the bearing frame;
the supporting part is used for supporting one surface of the backlight module, which faces away from the display panel, and adjusting an included angle between the display surface of the display panel and a horizontal plane;
the maintenance part is used for maintaining the display panel when the display surface of the display panel meets the requirements with the included angle of the horizontal plane.
In this embodiment, display module assembly maintenance device can pass through the supporting part supports the levelness and hangs down backlight unit realizes the support to display module assembly, and can pass through the supporting part is adjusted the display module assembly that supports, thereby makes behind display panel's the display surface and the contained angle meet the requirements with maintenance portion maintains, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
Preferably, the support part comprises a base and at least three support rods arranged on the base, and the support rods can move on the base in the horizontal direction and change the height of the club head from the base in the vertical direction;
the supporting parts are specifically used for enabling the supporting rods to horizontally move on the base to adjust the size of the supporting range, and adjusting the height of the rod heads of the supporting rods from the base to adjust the included angle between the display surface of the display panel and the horizontal plane. In this embodiment, at least three support rods capable of moving horizontally are arranged on the base, so that the backlight module can adapt to backlight modules with different levelness and different sizes; meanwhile, the height of the rod head from the base can be adjusted through the support rods, so that the included angle between the display surface of the display panel and the horizontal plane can be adjusted by respectively adjusting each support rod.
Preferably, the support rod comprises a first transmission part connected with the rod head, and the first transmission part drives the rod head to move in the vertical direction so as to adjust the height of the rod head from the base. In this embodiment, the height of the club head from the base is adjusted by the first transmission part, so that the accuracy can be improved.
Preferably, the first transmission part is any one of a ball screw pair transmission mechanism, a harmonic transmission gear transmission mechanism and a cycloidal-pin gear planetary transmission mechanism.
Preferably, the base is fixedly arranged on the bearing platform; or the base is movably arranged on the bearing platform and can horizontally move on the bearing platform. In this embodiment, the base may be fixedly disposed on the supporting platform based on the consideration of simplified structure, and the base may be movably disposed on the supporting platform based on the consideration of convenient position adjustment.
Preferably, the maintenance device further comprises a processing part connected with the maintenance part;
the processing part is used for determining the conversion relation between a first coordinate system where the display panel is located and a second coordinate system where the maintenance part is located, and controlling the maintenance part to move to the position above the pixel to be maintained of the display panel according to the conversion relation.
In this embodiment, the processing unit is provided to determine the conversion relationship between the first coordinate system in which the display panel is located and the second coordinate system in which the inspection unit is located, so that the work efficiency can be improved.
Preferably, the display panel displays a column direction bright line and a row direction bright line which are vertically intersected, and the column direction bright line and the row direction bright line are intersected at the pixel test point;
the processing part determines a conversion relation between the first coordinate system and the second coordinate system, and specifically comprises:
controlling the maintenance part to scan the display panel along a first scanning path, wherein the first scanning path is not parallel to the column direction bright lines and the row direction bright lines;
recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a first coordinate, recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a second coordinate, wherein the first coordinate and the second coordinate are coordinates under a second coordinate system;
determining the coordinates of the pixel test points in the second coordinate system according to the first coordinates and the second coordinates;
and determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates of the pixel test points in the first coordinate system and the coordinates of the pixel test points in the second coordinate system.
In this embodiment, the processing unit controls the inspection unit to scan the bright line on the display panel to determine the conversion relationship between the first coordinate system and the second coordinate system, so that even if the positioning mark on the display panel is blocked, the position of the pixel to be repaired can still be accurately positioned.
Preferably, the maintenance device further comprises a module signal controller;
the module signal controller is used for providing module signals for the display panel to enable the display panel to display the vertically crossed row direction bright lines and the vertically crossed row direction bright lines.
Preferably, the maintenance device further comprises a horizontal sensing part arranged on the bearing frame, the horizontal sensing part comprises at least three sensing sub-parts, and the three sensing sub-parts correspond to different positions on the display surface of the display panel;
the horizontal sensing part is used for sensing the distance from the horizontal sensing part to the corresponding position on the display surface of the display panel through each sensing sub-component, and determining the included angle between the display surface of the display panel and the horizontal plane.
In this embodiment, the horizontal sensing portion is provided, and at least three sensing sub-components included in the horizontal sensing portion can respectively sense the distance from the sensing sub-component to the corresponding position on the display surface of the display panel, so that the included angle between the display surface of the display panel and the horizontal plane is determined, and the work efficiency is improved.
Preferably, the sensor sub-assembly is an acoustic wave sensor or an optical sensor.
Preferably, the processing part is further connected with the horizontal sensing part and the supporting part respectively;
the processing part is further used for obtaining the included angle between the display surface of the display panel and the horizontal plane determined by the horizontal sensing part and controlling the supporting part to adjust the included angle between the display surface of the display panel and the horizontal plane to meet the requirements.
In this embodiment, the processing portion can control the supporting portion to adjust the included angle between the display surface of the display panel and the horizontal plane according to the data sensed by the horizontal sensing portion, manual adjustment is not needed, the working efficiency is improved, and the accuracy of adjustment can be improved.
The embodiment of the invention has the following beneficial effects: display module assembly maintenance device can pass through the supporting part supports the levelness and hangs down backlight unit realizes the support to display module assembly, and can pass through the supporting part is adjusted the display module assembly that supports, thereby makes behind display panel's the display surface and the contained angle meet the requirements with maintenance portion maintains, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
The embodiment of the present invention further provides a maintenance method for a display module, which adopts the maintenance device for a display module provided in the above embodiment, and includes:
enabling the supporting part to support one surface of the backlight module of the display module, which is back to the display panel;
adjusting the supporting part to enable the included angle between the display surface of the display panel and the horizontal plane to meet the requirement;
the maintenance part is used for maintaining the display panel of the display module.
Preferably, the support part comprises a base and at least three support rods arranged on the base, and the support rods can move on the base in the horizontal direction and change the height of the club head from the base in the vertical direction;
the adjustment the supporting part makes the contained angle of display panel's display surface and horizontal plane meets the requirements, specifically includes:
enabling each supporting rod to horizontally move on the base to adjust the size of the range of one surface of the backlight module, which is back to the display panel;
and adjusting the height between the rod head of each supporting rod and the base to adjust the included angle between the display surface of the display panel and the horizontal plane.
Preferably, the support rod comprises a first transmission part connected with the rod head;
the adjustment each the pole head of bracing piece apart from the height of base adjusts the contained angle of display panel's display surface and horizontal plane specifically includes:
the first transmission part drives the rod head to move in the vertical direction so as to adjust the height of the rod head from the base to adjust the included angle between the display surface of the display panel and the horizontal plane.
Preferably, the maintenance device further comprises a processing part connected with the maintenance part;
the maintenance method further comprises: and determining a conversion relation between a first coordinate system where the display panel is located and a second coordinate system where the maintenance part is located, and controlling the maintenance part to move to the position above the pixel to be maintained of the display panel according to the conversion relation.
Preferably, the determining a conversion relationship between a first coordinate system in which the display panel is located and a second coordinate system in which the inspection portion is located includes:
enabling the display panel to display a column direction bright line and a row direction bright line which are vertically intersected, wherein the column direction bright line and the row direction bright line are intersected at a pixel test point;
controlling the maintenance part to scan the display panel along a first scanning path, wherein the first scanning path is not parallel to the column direction bright lines and the row direction bright lines;
recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a first coordinate, recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a second coordinate, wherein the first coordinate and the second coordinate are coordinates under a second coordinate system;
determining the coordinates of the pixel test points in the second coordinate system according to the first coordinates and the second coordinates;
and determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates of the pixel test points in the first coordinate system and the coordinates of the pixel test points in the second coordinate system.
Preferably, the maintenance device further comprises a module signal controller;
the making the display panel display the vertically crossed column direction bright lines and row direction bright lines comprises: and enabling the module signal controller to provide module signals for the display panel, and enabling the display panel to display the vertically crossed row direction bright lines and the vertically crossed row direction bright lines.
Preferably, the maintenance device further comprises a horizontal sensing part arranged on the bearing frame, the horizontal sensing part comprises at least three sensing sub-parts, and the three sensing sub-parts correspond to different positions on the display surface of the display panel;
before the adjustment the supporting part makes the contained angle between display panel's display surface and the horizontal plane meet the requirements, still include:
and sensing the distance from the sensor to the corresponding position on the display surface of the display panel through each sensor sub-component, and determining the included angle between the display surface of the display panel and the horizontal plane.
Preferably, the processing part is further connected with the horizontal sensing part and the supporting part respectively;
the maintenance method further comprises:
through the processing part obtains the horizontal induction part confirms the contained angle of display panel's display surface and horizontal plane, control the supporting part adjustment the contained angle of display panel's display surface and horizontal plane meets the requirements.
The embodiment of the invention has the following beneficial effects: display module assembly maintenance device can pass through the supporting part supports the levelness and hangs down backlight unit realizes the support to display module assembly, and can pass through the supporting part is adjusted the display module assembly that supports, thereby makes behind display panel's the display surface and the contained angle meet the requirements with maintenance portion maintains, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
Drawings
Fig. 1 is a schematic structural diagram of a first display module maintenance device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first supporting portion according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second supporting portion according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second display module maintenance device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third display module maintenance device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a fourth display module maintenance device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a fifth display module maintenance device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a sixth display module maintenance device according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating a method for repairing a display module according to an embodiment of the present invention;
fig. 10 is a schematic view of scanning of the inspection portion when performing reference positioning with respect to pixels of the display panel according to the embodiment of the present invention.
Detailed Description
The following describes in detail the implementation of the embodiments of the present invention with reference to the drawings. It should be noted that the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1, a first maintenance device for a display module according to an embodiment of the present invention includes a display panel and a backlight module, the maintenance device includes a supporting platform 1, a supporting frame 2 and a supporting portion 3 disposed on the supporting platform 1, and an inspection portion 4 disposed on the supporting frame 2;
the supporting part 3 is used for supporting one surface of the backlight module, which faces away from the display panel, and adjusting the included angle between the display surface of the display panel and the horizontal plane;
and the maintenance part 4 is used for maintaining the display panel when the included angle between the display surface of the display panel and the horizontal plane meets the requirement. The inspection portion 4 may be any one or a combination of a laser emitting part and an eyepiece scanning part.
In this embodiment, display module assembly maintenance device can support the support that the backlight unit that the levelness is low through supporting part 3 and realize display module assembly to can adjust the display module assembly who supports through supporting part 3, thereby maintain with maintenance portion after making display panel's the display surface meet the requirements with the contained angle of horizontal plane, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
Generally, the surface of the backlight module facing away from the display panel has a low levelness, i.e. different portions have different heights and are not flat. The supporting part 3 can support the surface with low levelness, and on the premise of meeting the requirement, the structure of the supporting part 3 can be flexibly selected, for example, an annular supporting frame is adopted, namely, the annular supporting frame matched with the size of the display module is arranged on the surface of the backlight module, which faces away from the display panel, and supports the backlight module; for example, a plurality of support rods with adjustable height are used. As shown in fig. 2, in the structure of the supporting part 3, the supporting part 3 includes a base 31 and at least three supporting rods 32 (only three supporting rods 32 are shown in fig. 2 for simplifying the drawing) arranged on the base 31, each supporting rod 32 can adjust the height of the rod head from the base 31, so as to adjust the included angle between the display surface of the display panel and the horizontal plane, for example, the included angle between the display surface of the display panel and the horizontal plane can be made 0 degree by adjusting the height of the rod head of each supporting rod from the base 31, that is, the display surface of the display panel is parallel to the horizontal plane. It should be noted that, for the purpose of achieving accurate adjustment of the height of the supporting rod 32, the supporting rod 32 may include a first transmission part (not shown) connected to the club head, and the first transmission part drives the club head to move in a vertical direction to adjust the height of the club head from the base 31. Preferably, the first transmission part is any one of a ball screw pair transmission mechanism, a harmonic transmission gear transmission mechanism and a cycloidal-pin gear planetary transmission mechanism.
In order to make the supporting portion 3 capable of adapting to display modules with different sizes, the supporting rod 32 may be capable of moving on the base 31 in a horizontal direction, for example, the supporting portion 3 shown in fig. 3 further includes a first moving member 33, and the first moving member 33 may be a hydraulic transmission or a screw transmission guide rail, which is not described in detail herein.
Obviously, the supporting portion 3 obtained by combining fig. 2 and fig. 3 can accommodate backlight modules with different levelness and different sizes due to the at least three horizontally movable supporting rods 32 arranged on the base 31; meanwhile, the supporting rods 32 can adjust the height of the club head from the base 31, so that the included angle between the display surface of the display panel and the horizontal plane can be adjusted by adjusting each supporting rod 32.
The base 31 of the supporting portion 3 may be fixedly disposed on the supporting platform 1, or movably disposed on the supporting platform 1. For example, in the first display module maintenance device shown in fig. 1, the base 31 is fixed on the supporting platform 1, which is not flexible, but has a simple structure. For example, in the second maintenance device for a display module shown in fig. 4, a second moving part 11 is added on the basis of fig. 1, a base 31 of a support portion 3 is movably disposed on the bearing platform 1, and the base 31 can horizontally move on the bearing platform 1, wherein the base 31 is connected with the bearing platform 1 through the second moving part 11, the base 31 moves on the second moving part 11, and the second moving part 11 may be a hydraulic transmission or screw transmission guide rail, which is not described herein again, and obviously, the support portion 3 in fig. 4 is more convenient to adjust the position on the bearing platform 1.
Referring to fig. 1 to 4, fig. 5 shows a third display module maintenance device, which includes a supporting platform 1, a supporting frame 2 and a supporting portion 3 disposed on the supporting platform 1, and an inspection portion 4 disposed on the supporting frame 2; the support part 3 comprises a base 31 and at least three support rods 32 arranged on the base 31, the support rods 32 are movably arranged on the base 31 through a first moving part 33, and the height of the rod head from the base 31 can be adjusted through the support rods 32; the carrying platform 1 comprises a second moving part 11, and the base 31 of the supporting part 3 is movably arranged on the carrying platform 1 through the second moving part 11. Obviously, the third display module maintenance device shown in fig. 5 can adjust the included angle between the display surface of the display panel of the display module and the horizontal plane by adjusting the height of the supporting rod 32 of the supporting portion 3, and can also flexibly adjust the position of the supporting portion 3 on the supporting platform 1, and can also support display modules of different sizes by adjusting the position of the supporting rod 32 on the base 31.
In the process of repairing the display module, the repair part 4 needs to be moved above the pixels, and the position of the repair part 4 above the pixels is obviously required to be relatively accurate, if the manual movement is obviously inefficient and has low accuracy. Therefore, on the basis of the various maintenance devices described above, the processing portion may be provided in consideration of improving the work efficiency and accurately positioning the pixel to be maintained.
Referring to fig. 6, a fourth display module maintenance device is provided, which is different from the third display module maintenance device shown in fig. 5 in that the fourth display module maintenance device further includes a processing portion 5, and the processing portion 5 is connected to the maintenance portion 4; and the processing part 5 is used for determining the conversion relation between the first coordinate system where the display panel is located and the second coordinate system where the inspection part 4 is located, and controlling the inspection part 4 to move to the position above the pixel to be maintained of the display panel according to the conversion relation.
It should be noted that, because the display module is not disassembled, the frame of the display module usually blocks the positioning mark, and therefore the processor 5 controls the inspection part 4 to position the pixel and cannot refer to the positioning mark. In this embodiment, when the display panel displays a column-direction bright line and a row-direction bright line which are vertically intersected, and the column-direction bright line and the row-direction bright line are intersected at the pixel test point, the processing portion 5 determines a conversion relationship between the first coordinate system and the second coordinate system, and specifically includes: the control maintenance part 4 scans the display panel along a first scanning path, and the first scanning path is not parallel to the bright lines in the column direction and the bright lines in the row direction; recording a coordinate when the maintenance part 4 moves according to the first scanning path and scans a bright line in the column direction as a first coordinate, recording a coordinate when the maintenance part 4 moves according to the first scanning path and scans a bright line in the row direction as a second coordinate, wherein the first coordinate and the second coordinate are coordinates under a second coordinate system; determining the coordinates of the pixel test points in a second coordinate system according to the first coordinates and the second coordinates; and determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates of the pixel test points in the first coordinate system and the coordinates in the second coordinate system respectively. In this embodiment, the processing unit 5 controls the inspection unit 4 to scan the bright lines on the display panel to determine the conversion relationship between the first coordinate system and the second coordinate system, so that even if the positioning marks on the display panel are blocked, the positions of the pixels to be repaired can be accurately positioned.
Referring to fig. 7, a fifth display module maintenance device is provided, which may further include a module signal controller 6 on the basis of the fourth display module maintenance device shown in fig. 6, wherein the module signal controller 6 is electrically connected to the display module (not labeled);
and the module signal controller 6 is used for providing module signals for the display panel so that the display panel displays vertically crossed bright lines in the column direction and bright lines in the row direction.
It should be noted that the module signal controller 6 may be omitted in some application scenarios, for example, in a case where the control circuit board configured to the display module is still electrically connected to the display module and can provide the module signal, the control circuit board may replace the module signal controller 6, which is not described herein again.
Referring to fig. 8, a sixth display module maintenance device is provided, which is different from the fifth display module maintenance device shown in fig. 7 in that the sixth display module maintenance device further includes a horizontal sensing portion 7 disposed on the carrier 2, the horizontal sensing portion 7 includes at least three sensing sub-elements 71, and the three sensing sub-elements 71 correspond to different positions on the display surface of the display panel; the horizontal sensing part 7 is used for sensing the distance from the sensor sub-parts 71 to the corresponding positions on the display surface of the display panel and determining the included angle between the display surface of the display panel and the horizontal plane.
Preferably, the sensor sub-assembly 71 is an acoustic wave sensor or a light sensor.
Preferably, the processing portion 5 is further connected to the horizontal sensing portion 7 and the supporting portion 3, respectively, and the processing portion 5 is further configured to obtain an included angle between the display surface of the display panel determined by the horizontal sensing portion 7 and the horizontal plane, and to control the supporting portion 3 to adjust the included angle between the display surface of the display panel and the horizontal plane to meet the requirement.
In this embodiment, at least three sensor sub-components 71 included in the horizontal sensing portion 7 can respectively sense the distance from the sensor sub-component to the corresponding position on the display surface of the display panel, so as to determine the included angle between the display surface of the display panel and the horizontal plane, thereby improving the working efficiency; meanwhile, the processing part 5 can control the supporting part 3 to adjust the included angle between the display surface of the display panel and the horizontal plane according to the data sensed by the horizontal sensing part 7, manual adjustment is not needed, the working efficiency is improved, and the adjustment accuracy can be improved.
The embodiment of the invention has the following beneficial effects: display module assembly maintenance device can support the backlight unit that the levelness is low through the supporting part and realize the support to display module assembly to can adjust the display module assembly who supports through the supporting part, thereby maintain with maintenance portion after making display panel's the display surface meet the requirements with the contained angle of horizontal plane, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
Referring to fig. 9, an embodiment of the present invention further provides a maintenance method for a display module, where the maintenance device for a display module provided in the above embodiment is adopted, and the maintenance method includes:
901. the supporting part supports one surface of the backlight module of the display module, which faces back to the display panel.
902. The supporting part is adjusted to enable the included angle between the display surface of the display panel and the horizontal plane to meet the requirement.
903. The display panel of the display module is maintained by the maintenance part.
In this embodiment, display module assembly maintenance device can support the support that the backlight unit that the levelness is low through the supporting part and realize the display module assembly to can adjust the display module assembly who supports through the supporting part, thereby maintain with maintenance portion after making display panel's the display surface meet the requirements with the contained angle of horizontal plane, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
For a more clear understanding of the maintenance method of the display module of the present invention, the following is specifically described:
step one, enabling the supporting part to support one surface of the backlight module of the display module, which faces away from the display panel.
Wherein, this supporting part includes the base and sets up the at least three bracing piece on the base, and the bracing piece can carry out the removal of horizontal direction on the base to and change the height of pole head apart from the base on the vertical direction, consequently can be by the one side of bracing piece contact backlight unit's the one side of display panel dorsad.
And step two, adjusting the supporting part to enable the included angle between the display surface of the display panel and the horizontal plane to meet the requirement.
Specifically, the height of the rod head of each supporting rod from the base can be adjusted to adjust the included angle between the display surface of the display panel and the horizontal plane, so that the included angle between the display surface of the display panel and the horizontal plane meets the requirement; the size of the range of one side of the backlight module back to the display panel can be adjusted by horizontally moving each support rod on the base, so that the backlight module is suitable for display modules with different sizes.
In order to enable the support rod to have higher precision during adjustment, the support rod can comprise a first transmission part connected with the rod head, so that the first transmission part can drive the rod head to move in the vertical direction to adjust the height of the rod head from the base so as to adjust the included angle between the display surface of the display panel and the horizontal plane. The first transmission part can be any one of a ball screw pair transmission mechanism, a harmonic transmission gear transmission mechanism and a cycloid pin gear planetary transmission mechanism.
Certainly, when the display module maintenance device comprises the processing part connected with the supporting part, the processing part can control the supporting part to adjust the supporting height and the supporting range, and more particularly, the processing part can control the first transmission part to drive the rod head of the supporting rod to vertically move, so that the height of the rod head from the base is adjusted; meanwhile, when the supporting rod is movably arranged on the base through the first moving part, the processor can control the first moving part to drive the supporting rod to move on the base so as to adjust the supporting range. Furthermore, when the supporting portion is movably disposed on the supporting platform through the second moving part, the processor may also control the second moving part to drive the supporting portion to move on the supporting platform.
Based on the consideration of improving the efficiency and the precision of adjusting the contained angle of the display surface of the display panel and the horizontal plane, the maintenance device can further comprise a horizontal sensing part arranged on the bearing frame, the horizontal sensing part comprises at least three sensing sub-parts and the three sensing sub-parts correspond to different positions on the display surface of the display panel, so that the contained angle of the display surface of the display panel and the horizontal plane can be determined by sensing the distance from the display surface of the display panel to the corresponding position through each sensing sub-part. Similar with treater control supporting part, the treater also can be connected with horizontal induction portion and supporting part respectively, obtains the contained angle of the display surface and the horizontal plane of display panel that horizontal induction portion confirmed through the processing part, and the contained angle of control supporting part adjustment display panel's display surface and horizontal plane meets the requirements.
It should be noted that, when the processor controls any component, the processor is electrically connected to the component, and details are not described herein.
Fig. 10 is provided to help understand steps three through eight, and the following is specifically described:
and step three, enabling the display panel to display a row direction bright line X and a column direction bright line Y which are vertically intersected, wherein the row direction bright line X and the column direction bright line Y are intersected at a pixel test point A, and the pixel test point A is marked as A (a, b) under a first coordinate system.
In this step, the display panel of the display module displays the row direction bright line X and the column direction bright line Y by powering up the display module and providing the display signal, which may be provided by the module signal controller or provided by other devices (such as a personal computer, an industrial personal computer for testing, a notebook computer, etc.), and is not described herein again.
And step four, controlling the maintenance part 4 to scan the display panel along a first scanning path 100, wherein the first scanning path 100 is not parallel to the bright line X in the row direction and the bright line Y in the column direction.
And step five, recording the coordinate when the inspection part 4 moves along the first scanning path 100 and scans the bright line Y in the column direction as a first coordinate B ', recording the coordinate as B' (h, i) under a second coordinate system, and recording the coordinate when the inspection part 4 moves along the first scanning path 100 and scans the bright line X in the row direction as a second coordinate C ', recording the coordinate as C' (j, k) under the second coordinate system.
And step six, determining the coordinate of the pixel test point A in the second coordinate system to be A ' (h, k) according to the first coordinate B ' (h, i) and the second coordinate C ' (j, k).
And seventhly, determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates A (a, b) of the pixel test point A in the first coordinate system and the coordinates A' (h, k) of the pixel test point A in the second coordinate system. For example, the coordinates of the pixel to be repaired in the first coordinate system are D (c, D), and the coordinates in the second coordinate system are D (e, f), which can be converted by the following equations (1) and (2):
e ＝ h+(c-a)*w (1)
f ＝ k+(d-b)*l (2)
where w is the pixel width and l is the pixel length.
Therefore, for a pixel in any first coordinate system, the pixel can be converted according to the conversion relationship expressed by the formula (1) and the formula (2), and the coordinate of the pixel in the second coordinate system is obtained.
And step eight, controlling the maintenance part to be above the pixel to be maintained of the display panel according to the conversion relation between the first coordinate system and the second coordinate system, and maintaining the pixel.
The embodiment of the invention has the following beneficial effects: display module assembly maintenance device can support the backlight unit that the levelness is low through the supporting part and realize the support to display module assembly to can adjust the display module assembly who supports through the supporting part, thereby maintain with maintenance portion after making display panel's the display surface meet the requirements with the contained angle of horizontal plane, consequently need not disassemble display module assembly, can improve maintenance operation flow, improve work efficiency and reduce the material waste.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (15)
1. A maintenance device for a display module, wherein the display module is provided with a display panel and a backlight module and is characterized by comprising a bearing platform, a bearing frame and a supporting part which are arranged on the bearing platform, an overhauling part arranged on the bearing frame and a processing part connected with the overhauling part;
the supporting part is used for supporting one surface of the backlight module, which faces away from the display panel; the supporting part comprises a base and at least three supporting rods arranged on the base, and the supporting rods can move on the base in the horizontal direction and change the height of the club head from the base in the vertical direction; the supporting parts are specifically used for enabling the supporting rods to horizontally move on the base to adjust the size of a supporting range, and adjusting the height of the rod heads of the supporting rods from the base to adjust the included angle between the display surface of the display panel and the horizontal plane;
the maintenance part is used for maintaining the display panel when the included angle between the display surface of the display panel and the horizontal plane meets the requirement;
the processing part is used for determining the conversion relation between a first coordinate system where the display panel is located and a second coordinate system where the maintenance part is located, and controlling the maintenance part to move to the position above the pixel to be maintained of the display panel according to the conversion relation.
2. The maintenance device of claim 1, wherein the support rod comprises a first transmission part connected to the rod head, and the first transmission part drives the rod head to move vertically so as to adjust the height of the rod head from the base.
3. The maintenance device according to claim 2, wherein the first transmission portion is any one of a ball screw pair transmission mechanism, a harmonic drive gear transmission mechanism, and a cycloid pin gear planetary transmission mechanism.
4. The maintenance device of claim 1, wherein the base is fixedly mounted on the load-bearing platform; or,
the base is movably arranged on the bearing platform, and the base can horizontally move on the bearing platform.
5. The maintenance device of claim 1, wherein the display panel displays vertically intersecting column-direction and row-direction bright lines that intersect at pixel test points;
the processing part determines a conversion relation between the first coordinate system and the second coordinate system, and specifically comprises:
controlling the maintenance part to scan the display panel along a first scanning path, wherein the first scanning path is not parallel to the column direction bright lines and the row direction bright lines;
recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a first coordinate, recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a second coordinate, wherein the first coordinate and the second coordinate are coordinates under a second coordinate system;
determining the coordinates of the pixel test points in the second coordinate system according to the first coordinates and the second coordinates;
and determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates of the pixel test points in the first coordinate system and the coordinates of the pixel test points in the second coordinate system.
6. The maintenance device of claim 5, further comprising a modular signal controller;
the module signal controller is used for providing module signals for the display panel to enable the display panel to display the vertically crossed row direction bright lines and the vertically crossed row direction bright lines.
7. The maintenance device according to claim 1, further comprising a horizontal sensing portion disposed on the carrier, wherein the horizontal sensing portion comprises at least three sensing sub-members and the three sensing sub-members correspond to different positions on the display surface of the display panel;
the horizontal sensing part is used for sensing the distance from the horizontal sensing part to the corresponding position of the display panel through each sensing sub-component, and determining the included angle between the display surface of the display panel and the horizontal plane.
8. The maintenance device of claim 7 wherein said sensor subassembly is an acoustic wave sensor or an optical sensor.
9. The maintenance device of claim 7, wherein said processing portion is further connected to said horizontal sensing portion and said supporting portion, respectively;
the processing part is further used for obtaining the included angle between the display surface of the display panel and the horizontal plane determined by the horizontal sensing part and controlling the supporting part to adjust the included angle between the display surface of the display panel and the horizontal plane to meet the requirements.
10. A method for repairing a display module using the repairing apparatus of any one of claims 1 to 9, comprising:
enabling the supporting part to support one surface of the backlight module of the display module, which is back to the display panel;
enabling each supporting rod to horizontally move on the base to adjust the size of the range of one surface of the backlight module, which is back to the display panel;
adjusting the height of the rod head of each supporting rod from the base to adjust the included angle between the display panel and the horizontal plane;
determining a conversion relation between a first coordinate system where the display panel is located and a second coordinate system where the maintenance part is located, and controlling the maintenance part to move to the position above a pixel to be maintained of the display panel according to the conversion relation;
the maintenance part is used for maintaining the display panel of the display module.
11. The method of claim 10, wherein the support bar includes a first transmission portion connected to the head;
the adjustment each the pole head of bracing piece apart from the height of base adjusts the contained angle of display panel's display surface and horizontal plane specifically includes:
the first transmission part drives the rod head to move in the vertical direction so as to adjust the height of the rod head from the base to adjust the included angle between the display surface of the display panel and the horizontal plane.
12. The repair method of claim 10, wherein the determining a transformation relationship between a first coordinate system in which the display panel is located and a second coordinate system in which the service portion is located comprises:
enabling the display panel to display a column direction bright line and a row direction bright line which are vertically intersected, wherein the column direction bright line and the row direction bright line are intersected at a pixel test point;
controlling the maintenance part to scan the display panel along a first scanning path, wherein the first scanning path is not parallel to the column direction bright lines and the row direction bright lines;
recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a first coordinate, recording a coordinate when the maintenance part moves according to the first scanning path and scans the bright line in the row direction as a second coordinate, wherein the first coordinate and the second coordinate are coordinates under a second coordinate system;
determining the coordinates of the pixel test points in the second coordinate system according to the first coordinates and the second coordinates;
and determining the conversion relation between the first coordinate system and the second coordinate system according to the coordinates of the pixel test points in the first coordinate system and the coordinates of the pixel test points in the second coordinate system.
13. The method of claim 12, wherein the service device further comprises a modular signal controller;
the making the display panel display the vertically crossed column direction bright lines and row direction bright lines comprises: and enabling the module signal controller to provide module signals for the display panel, and enabling the display panel to display the vertically crossed row direction bright lines and the vertically crossed row direction bright lines.
14. The maintenance method of claim 11, wherein the maintenance device further comprises a horizontal sensing portion disposed on the carrier, the horizontal sensing portion comprises at least three sensing sub-components, and the three sensing sub-components correspond to different positions on the display surface of the display panel;
before the adjustment the supporting part makes the contained angle between display panel's display surface and the horizontal plane meet the requirements, still include:
and sensing the distance from the sensor to the corresponding position of the display panel through each sensor sub-component, and determining the included angle between the display surface of the display panel and the horizontal plane.
15. The maintenance method of claim 14, wherein the processing portion is further connected to the horizontal sensing portion and the supporting portion, respectively;
the maintenance method further comprises:
through the processing part obtains the horizontal induction part confirms the contained angle of display panel's display surface and horizontal plane, control the supporting part adjustment the contained angle of display panel's display surface and horizontal plane meets the requirements.
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| CN114310007A (en) * | 2021-12-31 | 2022-04-12 | 无锡中微掩模电子有限公司 | Novel laser beam repairing machine workbench |
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| CN201170819Y (en) * | 2007-11-26 | 2008-12-24 | 均豪精密工业股份有限公司 | System for detecting and locating panel bad point of planar display |
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| TWI220166B (en) * | 2003-02-07 | 2004-08-11 | Au Optronics Corp | Test device |
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| CN105374307A (en) * | 2015-12-28 | 2016-03-02 | 上海电机学院 | LCD (liquid crystal display) screen luminance tester |
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| CN201170819Y (en) * | 2007-11-26 | 2008-12-24 | 均豪精密工业股份有限公司 | System for detecting and locating panel bad point of planar display |
| JP2010286446A (en) * | 2009-06-15 | 2010-12-24 | Sony Corp | Inspection device of display panel, and inspection method of the same |
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