Display panel manufacturing device

Abstract

The present invention relates to an apparatus for manufacturing a display panel, the apparatus for manufacturing a display panel according to one embodiment comprising: a substrate loaded on a loading plate; at least one dispensing device for dispensing a dispensing substance in a liquid form according to a manufacturing process period and a concentration detection period; and a dispensing characteristic detection section that analyzes an image of a substance dispensed by the at least one dispensing device during the concentration detection to detect concentration, dispersion, and volume characteristics of the dispensed substance, and derives a concentration correction value.

Description

Technical Field

[0001] The present invention relates to a display panel manufacturing device. Background Art

[0002] As multimedia develops, the importance of display devices is increasing, and in response to this, various types of display devices such as organic light emitting display devices (OLED), liquid crystal display devices (LCD), etc. are being used.

[0003] The display device includes a display panel such as a light emitting display panel or a liquid crystal display panel as a device for displaying an image. The light emitting display panel may include a light emitting diode (LED), and the light emitting diode includes an organic light emitting diode using an organic substance as a fluorescent substance or an inorganic light emitting diode using an inorganic substance as a fluorescent substance.

[0004] When manufacturing a light-emitting diode display panel using an inorganic light-emitting diode or an organic light-emitting diode as a light-emitting diode, a process of drop-coating and printing a photoresist or an organic or inorganic insulating substance on a transparent insulating substrate of silicon, glass, etc. is required. At this time, an alignment device is used to accurately arrange the transparent insulating substrate on a loading plate of a manufacturing device, and a dropper or an inkjet printer is used to drop-coat the photoresist or the organic or inorganic insulating substance onto the transparent insulating substrate. Summary of the invention

[0005] Technical issues to be solved

[0006] The technical problem to be solved by the present invention is to provide a display panel manufacturing apparatus capable of more accurately detecting in real time the concentration of a substance dispensed and coated on a transparent insulating substrate (hereinafter referred to as a manufacturing substrate).

[0007] In particular, a display panel manufacturing apparatus is provided that can analyze the dispensing characteristics of a liquid substance dispensed by a dispensing device such as an inkjet printer or a dispenser to detect the concentration of the liquid substance and extract a concentration correction value in real time.

[0008] The technical problems of the present invention are not limited to the technical problems mentioned above, and those skilled in the art can clearly understand other technical problems not mentioned from the following description.

[0009] Workaround

[0010] A display panel manufacturing device according to an embodiment for solving the above-mentioned problem includes: a substrate loaded on a loading plate; at least one dispenser for dispensing a coating material in liquid form during a manufacturing process and during a concentration detection period; and a coating characteristic detection unit for analyzing an image of a substance dispensed by the at least one dispenser during the concentration detection period to detect the concentration, dispersion and volume characteristics of the coating material, and derive a concentration correction value.

[0011] At least one dropper includes: a plurality of dropper heads for dropping the coating material; at least one pump for supplying the coating material stored in at least one tank to the plurality of dropper heads; and a dropper moving module for moving the at least one tank, the at least one pump, and the plurality of dropper heads along a dropper path track.

[0012] During the concentration detection, the coating characteristic detection unit can respectively capture the coating shapes of the coating materials coated by the multiple coating heads and the scattered shapes of the coating materials coated by the multiple coating heads, respectively analyze the coating shape images of the coating materials and the scattered shape images of the coating materials to detect the concentration, dispersion and volume characteristics of the coating materials, and calculate the concentration correction value based on the concentration characteristic detection results including the concentration changes of the coating materials.

[0013] The coating characteristic detection unit includes: at least one shooting module, which shoots the coating shape of the coating material coated by the multiple coating heads and the dispersion shape of the coating material coated by the multiple coating heads; a dispersion analysis module, which analyzes the dispersion characteristics of the coating material coated by the multiple coating heads; and a concentration analysis module, which analyzes the coating shape image and the dispersion shape image respectively to detect the concentration, dispersion and volume characteristics of the coating material, and calculates the concentration correction value according to the concentration characteristic detection result.

[0014] Beneficial Effects

[0015] According to the manufacturing apparatus of the display panel according to the embodiment, the concentration of the liquid substance dispensed on the manufacturing substrate can be accurately detected in real time and a concentration correction value can be provided, thereby improving the manufacturing quality management efficiency of the display panel.

[0016] In addition, regardless of the type of liquid substance, the presence or absence of particles, the particle size, etc., the concentration of the liquid substance can be detected by analyzing the drop coating characteristics, thereby further improving the concentration detection efficiency of the liquid substance and reducing the manufacturing time and manufacturing costs of the display panel.

[0017] The effects according to the embodiment are not limited to those exemplified above, and more various effects are also included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. 1 is a side view schematically showing a display panel manufacturing apparatus according to an embodiment of the present invention.

[0019] Figure 2 It is schematically shown Figure 1 A top view of a display panel manufacturing apparatus is shown.

[0020] Figure 3 It is schematically shown Figure 1 A front view of a display panel manufacturing apparatus is shown.

[0021] Figure 4 FIG. 1 is a flowchart for explaining a dispensing material concentration detection and correction process and a dispensing process of a dispensing device according to an embodiment.

[0022] Figure 5 It is shown by Figures 1 to 3 A frame of droplet coating shape image captured by the first shooting module.

[0023] Figure 6 It is a diagram for explaining a method of analyzing a drop shape image captured by a first imaging module and analyzing drop characteristics.

[0024] Figure 7 It is schematically shown Figures 1 to 3 A top view of the Scatter Analysis module.

[0025] Figure 8 It is schematically shown Figure 7 A side view of the dispersion analysis module.

[0026] Fig. 9 It is shown by Figures 1 to 3 A frame of scattered shape captured by the first shooting module.

[0027] Fig.10 This is a graph showing changes in concentration characteristics of a liquid substance dispensed by a dispenser. Specific embodiments

[0028] The advantages and features of the present invention and the method for achieving these advantages and features will be described by referring to the following and accompanying drawings. Figure 1 However, the present invention is not limited to the embodiments disclosed below, but can be implemented in a variety of different forms. This embodiment is only provided to complete the disclosure of the present invention and to fully inform the scope of the invention to ordinary technicians in the technical field to which the present invention belongs, and the present invention is only limited by the scope of the claims.

[0029] Elements or layers are referred to as being "on" another element or layer, including both directly on another element or with other layers or other elements interposed therebetween. Throughout the specification, the same reference numerals refer to the same constituent elements. The shapes, sizes, proportions, angles, quantities, etc. disclosed in the drawings for illustrating the embodiments are exemplary, and therefore, the present invention is not limited to the matters shown.

[0030] Although "first", "second", etc. are used to describe various components, these components are obviously not limited by these terms. These terms are only used to distinguish one component from another component. Therefore, the first component mentioned below can obviously also be the second component within the technical concept of the present invention.

[0031] The various features of the various embodiments of the present invention can be partially or completely combined or combined with each other, and can be technically linked and driven in various ways, and the various embodiments can also be implemented independently of each other, or can also be implemented together due to an associated relationship.

[0032] Hereinafter, specific embodiments will be described with reference to the accompanying drawings.

[0033] Figure 1 FIG. 1 is a side view schematically showing a display panel manufacturing apparatus according to an embodiment of the present invention.

[0034] Reference Figure 1 The manufacturing device of the display panel includes at least one loading plate 100, a loading path track L1, at least one dispensing device 200, and a dispensing path track L2. In addition, the manufacturing device of the display panel may also include a chamber in which the loading plate 100, the loading path track L1, at least one dispensing device 200, and the dispensing path track L2 are built.

[0035] The chamber provides an internal process space for inkjet printing, dispensing, coating, dipping, aligning, lamination, bonding, laser irradiation, loading / unloading, etc. The chamber provides a process space that is vacuum, warm, soundproof, cooled, vibration-free, waterproof, etc., and for this purpose, it may also include a vacuum device, an air suction device, a purification device, a warm device, a cooling device, etc.

[0036] The loading plate 100 is a plate on which a manufacturing substrate 10 for manufacturing a display panel is placed, and may be formed in a circular plate shape or a rectangular or square flat plate shape.

[0037] A manufacturing substrate 10 for manufacturing a display panel, such as a wafer or a transparent glass substrate, may be placed on the loading plate 100. In addition, the manufacturing substrate 10 may include a pixel circuit substrate or a light emitting diode arrangement substrate for forming a plurality of pixel electrodes.

[0038] On the loading path track L1, the loading plate 100 is moved by the plate moving module 120 moving along the loading path track L1. The plate moving module 120 moves the loading plate 100 to a loading position, dispensing, laminating, laser irradiation and other process positions for manufacturing the substrate 10 and an unloading position for manufacturing the substrate 10 according to the panel manufacturing process. The plate moving module 120 may include at least one motor, a microprocessor, a driving shaft, a rotating shaft, a transmission belt, a chain, a gear, a wheel, etc.

[0039] The loading path track L1 forms a moving path for at least one loading plate 100 and plate moving module 120, and at least one manufacturing process device such as an alignment device or a bonding device. The loading path track L1 can be formed as a track formed by a simple path, or can be formed in the form of a conveyor or a transfer robot.

[0040] The dispensing device 200 may include a dispenser for applying liquid insulating materials such as organic or inorganic materials, ink, water, adhesive materials, sealing materials, photoresists, etc., or a printing device for performing an inkjet printing process, etc. Hereinafter, a dispenser for applying liquid materials such as insulating materials, ink, or photoresists will be described as an example, and the type, form, and use of the dispensing device 200 are not limited to the embodiments of this specification.

[0041] Figure 2 It is schematically shown Figure 1 A top view of a display panel manufacturing apparatus is shown.

[0042] Reference Figure 1 and Figure 2 The coating device 200 includes at least one coating applicator 220 and at least one coating characteristic detection unit 260 .

[0043] At least one dispenser 220 dispenses a coating material in a liquid form onto the manufacturing substrate 10 of the loading plate 100 during the manufacturing process. In addition, during the unloading of the manufacturing substrate 10, the coating material is dispensed in the direction of the coating characteristic detection part 260 or in the direction of at least one side of the coating characteristic detection part 260 during the preset concentration detection period.

[0044] At least one dispenser 220 includes a plurality of dispense heads 201 , at least one pump 202 , at least one tank 210 , and a dispenser moving module 212 .

[0045] Specifically, a plurality of drop coating heads 201 are arranged in the direction of at least one pump 202 and one side of the tank 210, and can be fixed in a state of being connected to at least one tank 210 by at least one pump 202 and a fixing frame, etc. Such a plurality of drop coating heads 201 drip coating materials supplied by at least one pump 202 in the arrangement direction of each drop coating head 201.

[0046] The plurality of dispensing heads 201 are fixed toward the dispensing process direction and process position where the loading plate 100 and the manufacturing substrate 10 are arranged. During the manufacturing process, the plurality of dispensing heads 201 dispense the dispensing material supplied by at least one pump 202 onto the manufacturing substrate 10 of the loading plate 100 transferred to the dispensing process position. In addition, during the unloading period in which the manufacturing substrate 10 of the loading plate 100 is transferred and unloaded to the unloading position, during the concentration detection period set in advance, the dispensing material is dispensed in the direction in which the dispensing characteristic detection unit 260 is arranged or in the direction of at least one side of the dispensing characteristic detection unit 260.

[0047] The plurality of coating heads 201 can coat the liquid coating material in a continuous water flow or water drop form according to a preset coating method, or coat the liquid coating material in a fine spray manner.

[0048] At least one pump 202 supplies the coating material stored in at least one tank 210 to the plurality of coating heads 201. The at least one pump 202 supplies the coating material to the plurality of coating heads 201 according to the preset manufacturing process period and concentration detection period, so as to control the coating operation through the plurality of coating heads 201 so as to coat the coating material according to the manufacturing process period and the concentration detection period.

[0049] The dispenser moving module 212 moves at least one tank 210, at least one pump 202, and a plurality of dispense heads 201 along the dispense path track L2. Specifically, the dispenser moving module 212 moves at least one dispenser 220 to a dispense process position or a concentration detection position according to a preset manufacturing process period and a manufacturing substrate 10 unloading period. The dispenser moving module 212 may include at least one motor, a microprocessor, a drive shaft, a rotating shaft, a transmission belt, a chain, a gear, a wheel, etc.

[0050] The dispensing path track L2 forms a moving path for at least one manufacturing process device such as at least one dispenser 220. The dispensing path track L2 can be formed as a track formed by a simple path, or can be formed in the form of a conveyor or a transfer robot.

[0051] The dispensing characteristic detection unit 260 captures the material dispensed by the dispenser 220 (i.e., the plurality of dispensing heads 201) during the concentration detection, and analyzes the captured image to detect the concentration, spread, and volume characteristics of the dispensed material. In addition, a concentration correction value is calculated based on the concentration characteristic detection result of the dispensed material.

[0052] Specifically, the drop coating characteristic detection unit 260 respectively captures the drop coating shape of the drop coating material dropped by the plurality of drop coating heads 201 during the concentration detection period and the dispersion shape of the drop coating material dropped by the plurality of drop coating heads 201. In addition, the drop coating shape image of the drop coating material and the dispersion shape image of the drop coating material are respectively analyzed to detect the concentration, dispersion and volume characteristics of the drop coating material. In addition, the drop coating characteristic detection unit 260 calculates the concentration correction value based on the concentration characteristic detection result such as the concentration change (e.g., % or ppm (mg / L)) of the drop coating material.

[0053] Figure 3 It is schematically shown Figure 1 A front view of a display panel manufacturing apparatus is shown.

[0054] Reference Figures 1 to 3 The drop coating characteristic detection unit 260 includes a shooting module 230 , a dispersion analysis module 240 and a concentration analysis module 250 , wherein the shooting module 230 includes at least one shooting module 231 and 232 .

[0055] At least one of the photographing modules 231 and 232 photographs the shape of the coating material dispensed by the plurality of coating heads 201 and the scattered shape of the coating material dispensed by the plurality of coating heads 201. At least one of the photographing modules 231 and 232 may include at least one photographing element or camera such as an optical microscope, a MOS image sensor such as CMOS, a CMOS camera, an infrared camera, a thermal image camera, and the like.

[0056] The drop coating characteristic detection unit 260 may include a first shooting module 231 arranged in a direction below a side surface of the plurality of drop coating heads 201 to photograph the drop coating shape of the drop coating material dropped by the plurality of drop coating heads 201 and generate a drop coating shape image. The first shooting module 231 is arranged on the side surface in the lower direction of the plurality of drop coating heads 201 along the direction of the drop coating head 201 where the drop coating material is dropped to photograph the drop coating shape of the drop coating material dropped by the plurality of drop coating heads 201. In order to generate the drop coating shape image, the first shooting module 231 may include an optical microscope and a CMOS image sensor, etc. In addition, the first shooting module 231 may include a CMOS camera, an infrared camera, or a thermal image camera.

[0057] The coating characteristic detection unit 260 may further include a second photographing module 232 disposed below one side surface of the plurality of coating heads 201 to photograph the spreading shape of the coating material coated and spread on the spreading analysis module 240 and generate a spreading shape image of the coating material.

[0058] The second shooting module 232 is arranged on the side surface in the downward direction of the plurality of dispensing heads 201, along the direction of dispensing the dispensing material (i.e., the downward direction of the dispensing head 201). The second shooting module 232 shoots the dispersion shape of the dispensing material dispensed and dispersed on the dispersion analysis module 240. In order to generate the dispersion shape image of the dispensing material dispersed on the dispersion analysis module 240, the second shooting module 232 may include an optical microscope and a CMOS image sensor, etc. In addition, the second shooting module 232 may include a CMOS camera, an infrared camera, or a thermal image camera.

[0059] The spreading analysis module 240 analyzes the spreading characteristics of the coating material spread on the spreading analysis module 240 after being coated by the plurality of coating heads 201. Specifically, the spreading analysis module 240 detects the spreading characteristics of the coating material including the spreading thickness, viscosity, weight and spreading amount of the coating material coated and spread on the spreading analysis module 240, and transmits the spreading characteristics detection result to the concentration analysis module 250.

[0060] The concentration analysis module 250 analyzes the drop shape image and the spread shape image of the drop material to detect the concentration, spread and volume characteristics of the drop material, and calculates the concentration correction value according to the concentration characteristic detection result.

[0061] Specifically, the concentration analysis module 250 analyzes the drop shape image of the drop coating material in units of at least one frame, thereby detecting first drop coating characteristic information including the drop volume, drop interval, moving distance, and drop speed of the drop coating material dropped by the drop coating head 201. In addition, the concentration analysis module 250 detects second drop coating characteristic information including the spreading area, spreading size, and spreading shape of the drop coating material spread on the spreading analysis module 240.

[0062] In addition, the concentration analysis module 250 compares and analyzes the first and second drop coating characteristic information with the reference information of the dispersion thickness, viscosity, weight and dispersion amount information of the drop coating material received from the dispersion analysis module 240, thereby detecting the concentration, dispersion and volume characteristics of the drop coating material.

[0063] The concentration analysis module 250 calculates a concentration correction value based on the concentration characteristic detection result of the dispensed material including the concentration variation (eg, % or ppm (mg / L)) of the dispensed material.

[0064] Figure 4FIG. 1 is a flowchart for explaining a dispensing material concentration detection and correction process and a dispensing process of a dispensing device according to an embodiment.

[0065] Reference Figure 4 , the loading plate 100 moves to an additional loading position and an unloading position, so that at least one dispenser 220 can move to a preset concentration detection position during unloading and loading of the manufacturing substrate 10. The dispenser 220 moved to the concentration detection position and the plurality of dispense heads 201 dispense the dispensing material in the direction of the dispensing characteristic detection unit 260 or in the direction of at least one side of the dispensing characteristic detection unit 260 during the preset concentration detection period. At this time, the plurality of dispense heads 201 can dispense the liquid dispensing material in the form of water droplets or fine spray according to the preset dispensing method.

[0066] In step SS1, the first photographing module 231 of the coating characteristic detection unit 260 photographs the coating shape of the coating material coated by the plurality of coating heads 201 in units of at least one frame, and transmits the photographed coating shape image to the concentration analysis module 250. At the same time, the second photographing module 232 photographs the spreading shape of the coating material coated and spread on the spreading analysis module 240 in units of at least one frame, and transmits the photographed spreading shape image to the concentration analysis module 250.

[0067] Figure 5 It is shown by Figures 1 to 3 A frame of the dripping shape image captured by the first shooting module 231. And, Figure 6 It is a diagram for explaining a method of analyzing a drop shape image captured by the first imaging module 231 and analyzing drop characteristics.

[0068] Reference Figure 5 and Figure 6 The concentration analysis module 250 analyzes the drop coating shape image captured by the first shooting module 231 to detect the first drop coating characteristic information, wherein the first drop coating characteristic information includes the drop volume, drop interval, moving distance and drop speed of the drop coating material dropped by each drop coating head 201.

[0069] Specifically, the concentration analysis module 250 analyzes the color scale, luminance difference and brightness difference between adjacent pixels of the drop shape image and performs segmentation processing, thereby distinguishing the drop material LC included in the drop shape image. In addition, the first reference lattice La1 and the second reference lattice La2 in the horizontal direction and the vertical direction are set according to the resolution of the drop shape image.

[0070] The concentration analysis module 250 compares the drop coating material LC distinguished in the image with the intervals of the first reference lattice La1 and the second reference lattice La2, thereby detecting the width w1 of the drop coating material LC in the direction of the first reference lattice La1 and the width w2 in the direction of the second reference lattice La2. The concentration analysis module 250 calculates the average width and the average width in the directions of the first reference lattice La1 and the second reference lattice La2, thereby analyzing and detecting the average drop volume or area of ​​the drop coating material LC.

[0071] In addition, the concentration analysis module 250 compares the intervals of the drop coating material LC distinguished in at least one frame image unit with the first reference lattice La1 and the second reference lattice La2, thereby analyzing and detecting the first drop interval ml1 and the second drop interval ml2 of the drop coating material LC.

[0072] The concentration analysis module 250 distinguishes the drop coating material LC according to the drop coating shape images of the plurality of frames captured sequentially and compares them with the first reference lattice La1 and the second reference lattice La2, thereby analyzing the movement position change of the drop coating material LC. The movement distance and the dripping speed of the drop coating material LC can be detected based on the movement position change of the drop coating material LC compared with the first reference lattice La1 and the second reference lattice La2.

[0073] Figure 7 It is schematically shown Figures 1 to 3 A top view of the scatter analysis module. In addition, Figure 8 It is schematically shown Figure 7 A side view of the dispersion analysis module.

[0074] Reference Figure 7 and Figure 8 The distribution analysis module 240 includes a plane plate 241 , a weight measurement unit 242 , and a thickness measurement unit 243 .

[0075] The plane plate 241 is arranged on the lower surface of the plurality of dispensing heads 201 to correspond to the arrangement positions of the plurality of dispensing heads 201 , thereby forming a placement surface to place and spread the dispensing substance.

[0076] The weight measuring part 242 is arranged in the front surface direction of the flat plate 241 to measure the weight of the drop coating material spread on the front surface. The weight measuring part 242 may include a flat digital scale and a communication module for transmitting a weight value, etc. The weight measuring part 242 measures the weight of the drop coating material spread on the weight measuring part 242 and the spread amount based on the weight.

[0077] The thickness measuring part 243 is disposed at a front surface peripheral portion of the flat plate 241 or at least any one side surface direction of the weight measuring part 242 to measure the spread thickness of the drop coating material spread on the weight measuring part 242 .

[0078] The thickness measuring part 243 may include an infrared light emitting module 243 (a) and an infrared receiving module 243 (b). The thickness measuring part 243 emits infrared rays in the side surface direction of the drop coating material spread on the weight measuring part 242, and senses the infrared rays reflected from or passing through the drop coating material. For example, the thickness measuring part 243 may sense the passing height or the reflected height of the infrared rays passing through the drop coating material, thereby measuring the spread thickness of the drop coating material spread on the weight measuring part 242.

[0079] Fig. 9 It is shown by Figures 1 to 3 FIG. 2 is a diagram showing a frame of scattered image captured by the first capturing module 231.

[0080] As described above, the second photographing module 232 is arranged on the side surface in the downward direction of the plurality of dispensing heads 201 along the direction in which the dispensing material is dispensed (i.e., the downward direction of the dispensing head 201). The second photographing module 232 photographs the spread shape of the dispensing material dispensed and spread on the weight measuring part 242 of the spread analysis module 240.

[0081] Reference Fig. 9 The concentration analysis module 250 receives the dispersion shape image of the drop coating material in units of at least one frame. The concentration analysis module 250 analyzes the dispersion shape image of the drop coating material in units of at least one frame, thereby detecting the second drop coating characteristic information including the dispersion area, dispersion size and dispersion shape of the drop coating material dispersed on the dispersion analysis module 240.

[0082] Specifically, the density analysis module 250 analyzes the color scale, luminance difference and brightness difference between adjacent pixels of the scattered shape image and performs segmentation processing, thereby distinguishing the drop coating material LC included in the scattered shape image. In addition, the first reference lattice La1 and the second reference lattice La2 in the horizontal direction and the vertical direction are set according to the resolution of the scattered shape image.

[0083] The concentration analysis module 250 compares the drop coating material LC distinguished in the spread shape image with the intervals of the first reference lattice La1 and the second reference lattice La2, thereby detecting the spread width lw1 of the drop coating material LC spread in the direction of the first reference lattice La1 and the spread width lw2 spread in the direction of the second reference lattice La2. The concentration analysis module 250 calculates the average spread width and the average spread width in the directions of the first reference lattice La1 and the second reference lattice La2, thereby analyzing and detecting the spread shape and spread area of ​​the drop coating material LC.

[0084] Fig.10 This is a graph showing changes in concentration characteristics of a liquid substance dispensed by a dispenser.

[0085] Reference Fig.10The concentration analysis module 250 compares and analyzes the first and second drop coating characteristic information with the reference information of the dispersion thickness, viscosity, weight and dispersion amount of the drop coating material received from the dispersion analysis module 240, thereby detecting the concentration characteristics and concentration change of the drop coating material.

[0086] In addition, the concentration analysis module 250 calculates a concentration correction value based on the concentration characteristic detection result of the dispensed material including the concentration variation (eg, % or ppm (mg / L)) of the dispensed material.

[0087] In step SS2 , specifically, the concentration analysis module 250 may calculate a concentration correction value corresponding to the difference between a preset concentration reference value (eg, %) and a concentration variation of the drop coating material (eg, %), and display the value on a monitor or the like.

[0088] Step SS3, refer again Figure 4 During the manufacturing process, the loading plate 100 is moved to the dispensing process position. Similarly, at least one dispenser 220 can also be moved to the dispensing process position during the manufacturing process. In the dispensing process position, the manufacturing substrate 10 of the loading plate 100 can be aligned by an additional alignment device.

[0089] In step SS4, at least one dispenser 220 is fixed toward the dispensing process direction and process position where the loading plate 100 and the manufacturing substrate 10 are arranged. During the manufacturing process, at least one dispenser 220 dispenses the dispensing material supplied by at least one pump 202 onto the manufacturing substrate 10 of the loading plate 100 transferred to the dispensing process position.

[0090] Step SS5, during the unloading period after performing the dispensing and during the concentration detection period, the loading plate 100 moves to a preset unloading position. The manufacturing substrate 10 on which the dispensing material is dispensed can be transported out by an additional unloading device.

[0091] In addition, during the concentration detection, the dispensing characteristic detection unit 260 photographs the substance dispensed by the dispenser 220 (i.e., the plurality of dispensing heads 201) during the concentration detection, and detects the concentration, spread, and volume characteristics of the dispensed substance by analyzing the photographed image. In addition, the process of calculating the concentration correction value can be repeated based on the concentration characteristic detection result of the dispensed substance.

[0092] The embodiments of the present invention are described above with reference to the accompanying drawings, but those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical concept or essential features of the present invention. Therefore, it should be understood that the embodiments described above are exemplary in all aspects and not restrictive.

[0093] Description of Reference Numerals

[0094] 10: Manufacturing substrate

[0095] 100: Loading plate

[0096] 120: Board moving module

[0097] 200: Drop coating device

[0098] 240: Scattering Analysis Module

[0099] 260: Drip coating characteristics detection department

Claims

1. A display panel manufacturing device, comprising: a substrate, loaded on a loading plate; at least one dispenser for dispensing a coating material in a liquid form during a manufacturing process and during a concentration detection period; as well as The dispensing characteristic detection section analyzes an image of the substance dispensed by the at least one dispenser during the concentration detection to detect the concentration, spread and volume characteristics of the dispensed substance and derives a concentration correction value.

2. The display panel manufacturing device according to claim 1, wherein: The at least one dispenser comprises: A plurality of drop coating heads for dripping the coating material; at least one pump that supplies a dispensing substance stored in at least one tank to the plurality of dispensing heads; and The dispenser moving module moves the at least one tank, the at least one pump and the plurality of dispense heads along a dispense path track.

3. The display panel manufacturing device according to claim 2, wherein: The drop coating characteristic detection unit is configured as follows: During the concentration detection, the drop shapes of the drop materials dropped by the plurality of drop materials are photographed and the scattered shapes of the drop materials dropped by the plurality of drop materials are photographed respectively. analyzing the drop shape image of the drop material and the spread shape image of the drop material respectively to detect the concentration, spread and volume characteristics of the drop material being dropped, and A concentration correction value is calculated based on a concentration characteristic detection result including a concentration change of the dispensed substance.

4. The display panel manufacturing device according to claim 2, wherein: The drop coating characteristic detection unit comprises: at least one shooting module for shooting the drop shapes of the drop materials dropped by the plurality of drop coating heads and the scattered shapes of the drop materials dropped by the plurality of drop coating heads; a dispersion analysis module for analyzing dispersion characteristics of the coating material dispensed by the plurality of coating heads; and The concentration analysis module analyzes the drop shape image and the spread shape image received from the at least one shooting module to detect the concentration, spread and volume characteristics of the drop material, and calculates a concentration correction value according to the concentration characteristic detection result.

5. The display panel manufacturing device according to claim 4, wherein: The drop coating characteristic detection unit comprises: A first shooting module is arranged below one side surface of the plurality of dispensing heads to shoot the dispensing shapes of the plurality of dispensing heads and generate an image of the dispensing shapes; and The second shooting module is arranged below one side surface of the plurality of dispensing heads to shoot the spreading shape of the dispensing material dispensed and spread on the spreading analysis module, and generates the spreading shape image.

6. The display panel manufacturing device according to claim 4, wherein: The dispersion analysis module is configured to: detecting the spreading characteristics of the drop coating material including the spreading thickness, viscosity, weight and spreading amount of the drop coating material dropped and spread on the spreading analysis module, and The dispersion characteristic detection result is transmitted to the concentration analysis module.

7. The display panel manufacturing device according to claim 4, wherein: The concentration analysis module is configured to: Analyzing the drop shape image in units of at least one frame to detect first drop characteristic information including drop volume, drop interval, moving distance and drop speed of the drop materials dropped by the plurality of drop heads, detecting second drop coating characteristic information including a spreading area, a spreading size and a spreading shape of the drop coating material spread on the spreading analysis module, comparing and analyzing the first and second drop coating characteristic information with the preset reference information of the dispersion thickness, viscosity, weight and dispersion amount of the drop coating material received from the dispersion analysis module, thereby detecting the concentration, dispersion and volume characteristics of the drop coating material, and The concentration correction value is calculated based on a detection result of a concentration characteristic of the dispensed material including a concentration variation of the dispensed material.

8. The display panel manufacturing device according to claim 4, wherein: The dispersion analysis module comprises: a flat plate on which the drop coating substance is placed and spread; a weight measuring portion disposed on the front surface of the planar plate to measure the weight of the dispersed drop coating substance; and A thickness measuring portion is disposed at a peripheral portion of the front surface of the planar plate to measure a spread thickness of the spread drop coating material.

9. The display panel manufacturing device according to claim 8, wherein: The thickness measuring section is configured as follows: comprising an infrared light emitting module and an infrared receiving module, and emitting infrared rays in a direction of a side surface of the drop coating material spread on the weight measuring part, and The infrared rays reflected from or transmitted through the dispensed material are sensed, thereby measuring the spread thickness of the dispensed material spread on the weight measuring portion.

10. The display panel manufacturing device according to claim 4, wherein: The concentration analysis module is configured to: Analyzing the color scale, luminosity difference and brightness difference between adjacent pixels of the scattered shape image and performing segmentation processing, thereby distinguishing the drop coating material included in the scattered shape image, and The drop coating material distinguished in the scatter shape image is compared with the first reference lattice and the second reference lattice to detect the scatter width of the drop coating material scattered in the first reference lattice direction and the scatter width of the drop coating material scattered in the second reference lattice direction, and the average scatter width in the first reference lattice direction and the second reference lattice direction is calculated to analyze and detect the scatter shape and scatter area of ​​the drop coating material.

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