CN112711156B - Display panel manufacturing device and manufacturing method - Google Patents
Display panel manufacturing device and manufacturing method Download PDFInfo
- Publication number
- CN112711156B CN112711156B CN202011014210.8A CN202011014210A CN112711156B CN 112711156 B CN112711156 B CN 112711156B CN 202011014210 A CN202011014210 A CN 202011014210A CN 112711156 B CN112711156 B CN 112711156B
- Authority
- CN
- China
- Prior art keywords
- light emitting
- emitting element
- light
- display panel
- peak wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 120
- 230000001678 irradiating effect Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000003384 imaging method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 36
- 238000010586 diagram Methods 0.000 description 10
- 229920000106 Liquid crystal polymer Polymers 0.000 description 9
- 230000012447 hatching Effects 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 8
- 229910004438 SUB2 Inorganic materials 0.000 description 6
- 101100311330 Schizosaccharomyces pombe (strain 972 / ATCC 24843) uap56 gene Proteins 0.000 description 6
- 101150018444 sub2 gene Proteins 0.000 description 6
- 102100036464 Activated RNA polymerase II transcriptional coactivator p15 Human genes 0.000 description 5
- 101000713904 Homo sapiens Activated RNA polymerase II transcriptional coactivator p15 Proteins 0.000 description 5
- 229910004444 SUB1 Inorganic materials 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 101100454441 Solanum lycopersicum LE25 gene Proteins 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Abstract
The invention provides a manufacturing device and a manufacturing method of a display panel capable of suppressing the reduction of the yield. A display panel manufacturing apparatus for irradiating a display panel with ultraviolet light includes a plurality of light emitting units arranged in at least one direction, each of the light emitting units including: a first light emitting element that irradiates ultraviolet rays of a first peak wavelength to a region having a first material in the display panel; and a second light emitting element that irradiates ultraviolet rays of a second peak wavelength to a region having a second material in the display panel, the second peak wavelength being different from the first peak wavelength.
Description
Cross Reference to Related Applications
The present application is based on and claims priority from japanese patent application No. 2019-194446 filed on 10/25 of 2019, the entire contents of which are incorporated herein by reference.
Technical Field
Embodiments of the present invention relate to a manufacturing apparatus and a manufacturing method of a display panel.
Background
As a display panel, a liquid crystal panel is known. An ultraviolet irradiation device, which is one of the manufacturing devices of the liquid crystal panel, is used for, for example, photo-alignment treatment of an alignment film. In one example, light emitted from a rod-shaped UV lamp is condensed by a reflecting mirror and irradiated through a small hole. In this case, the unevenness in the exposure amount may be a cause of a decrease in the yield.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2007-219191
Patent document 2: japanese patent laid-open No. 2015-148748
Disclosure of Invention
Technical problem to be solved by the invention
The purpose of the present embodiment is to provide a device and a method for manufacturing a display panel, which can suppress the reduction of the yield.
Means for solving the problems
The manufacturing apparatus of the present embodiment is a manufacturing apparatus for a display panel, which irradiates ultraviolet rays to the display panel, and includes a plurality of light emitting portions arranged at least in one direction, each of the light emitting portions including: a first light emitting element that irradiates ultraviolet rays of a first peak wavelength to a region having a first material in the display panel; and a second light emitting element that irradiates ultraviolet rays of a second peak wavelength to a region having a second material in the display panel, the second peak wavelength being different from the first peak wavelength.
The method for manufacturing a display panel according to the present embodiment is a method for manufacturing a display panel, in which an ultraviolet irradiation device is used in which a plurality of light emitting portions each including a first light emitting element that irradiates ultraviolet light of a first peak wavelength included in a first wavelength region and a second light emitting element that irradiates ultraviolet light of a second peak wavelength included in a second wavelength region are arranged in at least one direction, and in which a display panel including a first material that reacts in the first wavelength region and a second material that reacts in the second wavelength region is superimposed on the plurality of light emitting portions, the first light emitting element is lit in the light emitting portion when the light emitting portion is superimposed on the first material, and the second light emitting element is lit in the light emitting portion when the light emitting portion is superimposed on the second material.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present embodiment, it is possible to provide a manufacturing apparatus and a manufacturing method of a display panel capable of suppressing a reduction in the yield.
Drawings
Fig. 1 is a diagram showing a configuration example of a display panel manufacturing apparatus 1.
Fig. 2 is a plan view showing a configuration example of the display panel PNL.
Fig. 3 is a cross-sectional view showing a structural example of the display panel PNL shown in fig. 2.
Fig. 4 is a diagram showing a configuration example of the light source panel 10.
Fig. 5 is a diagram showing another configuration example of the light source panel 10.
Fig. 6 is a diagram for explaining an example of control performed by the manufacturing apparatus 1 according to the present embodiment.
Fig. 7 is a diagram for explaining an example of control performed by the manufacturing apparatus 1 according to the present embodiment.
Description of the reference numerals
1 … manufacturing apparatus 10 … light source panel 20 … stage 30 … optical system 40 … polarizer 50 … imaging apparatus 70 … control section 80 … moving mechanism O … object (liquid crystal panel) LE … light emitting element LD1 … first light emitting element LD2 … second light emitting element 11 … supporting substrate
Detailed Description
The present embodiment will be described below with reference to the drawings. It is to be noted that the disclosure is merely an example, and those skilled in the art can easily understand that the present invention is not limited to the above-described embodiments. In addition, in the drawings, for the sake of clarity of description, the width, thickness, shape, and the like of each portion are schematically shown as compared with the actual form, but this is merely an example, and does not limit the explanation of the present invention. In the present specification and the drawings, constituent elements that exhibit the same or similar functions to those already described in the drawings appearing before are given the same reference numerals, and repeated detailed description may be omitted as appropriate.
Fig. 1 is a diagram showing a configuration example of a manufacturing apparatus 1 for a liquid crystal panel as a display panel. In one example, the first direction X, the second direction Y, and the third direction Z are orthogonal to each other, but may intersect at an angle other than 90 degrees. For convenience, the first direction X and the second direction Y in this specification are directions defining a plane, and the third direction Z corresponds to a thickness or height direction.
In the present embodiment described below, an ultraviolet irradiation device that irradiates Ultraviolet (UV) light to a liquid crystal panel is described as an example of the apparatus 1 for manufacturing a liquid crystal panel.
The manufacturing apparatus 1 includes a light source panel 10, a stage 20, an optical system 30, a polarizing plate 40, an imaging device 50, an ultraviolet lamp 60, and a control unit (CNT) 70. In the example shown in fig. 1, the light source panel 10, the optical system 30, the polarizing plate 40, and the stage 20 are arranged in this order along the third direction Z. The imaging device 50 and the ultraviolet lamp 60 are disposed on the opposite side of the light source panel 10 with the stage 20 interposed therebetween.
The details of the light source panel 10 will be described later, and the light source panel 10 has an irradiation region 10A that irradiates the stage 20 with a plurality of ultraviolet rays of different wavelengths. The stage 20 is made of a material that transmits at least ultraviolet rays irradiated from the light source panel 10. The object O irradiated with ultraviolet rays is disposed on the upper surface 20A of the stage 20. Substantially the entire object O overlaps with the irradiation region 10A. An example of the object O is a liquid crystal panel. In the example shown in fig. 1, the object O is a member that forms a plurality of liquid crystal panels together, and includes a pair of mother substrates MS1 and MS2, a liquid crystal layer LC, and a seal SE. The liquid crystal layer LC is disposed between the pair of mother substrates MS1 and MS2, and is sealed by a seal SE or the like. Specific examples of the liquid crystal panel will be described later. The heat radiation mechanism or the cooling mechanism of the light source panel 10 may be provided on the opposite side of the light source panel 10 from the stage 20.
The optical system 30 and the polarizing plate 40 are both provided between the light source panel 10 and the stage 20, but the present invention is not limited to the example in which the optical system 30 is provided on the light source panel 10 side and the polarizing plate 40 is provided on the stage 20 side, and the polarizing plate 40 may be provided on the light source panel 10 side and the optical system 30 may be provided on the stage 20 side. Each of the optical system 30 and the polarizing plate 40 is disposed so as to overlap substantially the whole of the irradiation region 10A. The optical system 30 includes, for example, an optical member such as a microlens array or a prism, and is configured to parallelize, condense, or diffuse ultraviolet light irradiated from the irradiation region 10A. The polarizing plate 40 is configured to transmit a linear polarization component of ultraviolet rays irradiated from the irradiation region 10A. Either one of the optical system 30 and the polarizing plate 40 may not be provided. Further, in order to finely control the irradiation area of light and to exclude light from adjacent light sources, it is desirable to convert light irradiated from the light source panel 10 into parallel light with the optical system 30.
The imaging device 50 is configured to capture an image of an object (liquid crystal panel) O disposed on the stage 20 and output the captured image to the control unit 70. The lamp 60 is, for example, an ultraviolet lamp, and is configured to irradiate ultraviolet rays onto the object O. The lamp 60 is mainly used for curing the ultraviolet curable resin included in the object O. The lamp 60 may be a heating source for curing the thermosetting resin included in the object O. The lamp 60 may be provided on the side where the light source panel 10 is provided. The lamps 60 may be turned on in parallel when the light emitting elements of the light source panel 10 are turned on in order to react the material of the display panel, or may be turned on after the light emitting elements are turned off. In addition, the lamp 60 may have a wavelength region or a peak wavelength identical to or repeatable from the wavelength region or the peak wavelength of the light emitting element of the light source panel 10. By using the lamp 60, desired light can be irradiated to an area that cannot be irradiated with the light source panel 10.
The control unit 70 controls the light source panel 10 based on the image captured by the imaging device 50. Specific control examples will be described later.
Next, a liquid crystal panel to which a polymer dispersed liquid crystal is applied will be described as a specific example of the liquid crystal panel.
Fig. 2 is a plan view showing a structural example of the liquid crystal panel PNL. The liquid crystal panel PNL includes a first substrate SUB1 and a second substrate SUB2. The first substrate SUB1 is a substrate cut from the mother substrate MS1 shown in fig. 1, and the second substrate SUB2 is a substrate cut from the mother substrate MS2 shown in fig. 1. The first substrate SUB1 and the second substrate SUB2 overlap in a plan view. The first substrate SUB1 and the second substrate SUB2 are bonded by a continuous annular seal SE. The seal SE may have an injection port filled with a sealing material, but in the present embodiment, the seal SE has a shape without an injection port. In this case, the liquid crystal material is sealed in the seal by a method called ODF (One Drop Fill). The liquid crystal layer LC is disposed inside surrounded by the seal SE.
As shown enlarged and schematically in fig. 2, the liquid crystal layer LC is provided with a polymer dispersed liquid crystal comprising a polymer LCP and liquid crystal molecules LCM. In one example, the polymer LCP is a liquid crystalline polymer. The polymer LCP is formed in a bar shape extending in one direction. The liquid crystal molecules LCM are dispersed in the interstices of the polymer LCP. The long axis of the liquid crystal molecule LCM is oriented in a manner along the long axis of the polymer LCP. Each of the polymer LCP and the liquid crystal molecule LCM has optical anisotropy or refractive index anisotropy. The polymer LCP has a lower response to an electric field than the liquid crystal molecules LCM.
The liquid crystal panel PNL includes a display portion DA for displaying an image and a frame-shaped non-display portion NDA surrounding the display portion DA. The display portion DA includes a plurality of pixels PX. As enlarged and shown in fig. 2, each pixel PX includes a switching element SW, a pixel electrode PE, and the like. The switching element SW is electrically connected to the scanning line G and the signal line S. The pixel electrode PE is electrically connected to the switching element SW. The common electrode CE is commonly disposed with respect to the plurality of pixel electrodes PE. The liquid crystal layer LC (particularly, liquid crystal molecules LCM) is driven by an electric field generated between the pixel electrode PE and the common electrode CE. The capacitor CS is formed between an electrode having the same potential as the common electrode CE and an electrode having the same potential as the pixel electrode PE, for example.
Fig. 3 is a cross-sectional view showing a structural example of the liquid crystal panel PNL shown in fig. 2.
The first substrate SUB1 includes a transparent substrate T10, insulating films IL1 and IL2, a capacitor electrode C, a switching element SW, a pixel electrode PE, and an alignment film AL1. The insulating film IL1 covers the switching element SW. The scanning line G and the signal line S shown in fig. 2 are provided between the transparent substrate T10 and the insulating film IL1, and are not shown here. The capacitor electrode C is disposed between the insulating films IL1 and IL 2. The pixel electrode PE is provided for each pixel PX between the insulating film IL2 and the alignment film AL1. The pixel electrode PE is electrically connected to the switching element SW via the opening OP of the capacitor electrode C. The alignment film AL1 covers the pixel electrode PE.
The second substrate SUB2 includes a transparent substrate T20, a common electrode CE, and an alignment film AL2. The alignment film AL2 covers the common electrode CE. On the second substrate SUB2, a light shielding layer may be provided directly above the switching element SW, the scanning line G, and the signal line S, respectively. The alignment films AL1 and AL2 are horizontal alignment films obtained by alignment treatment in one direction. The alignment treatment may be a rubbing treatment or a photo-alignment treatment.
Next, a structural example of the light source panel 10 will be described.
Fig. 4 is a diagram showing a configuration example of the light source panel 10. The light source panel 10 includes a support substrate 11 and a plurality of light emitting portions LE. In the example shown in fig. 4, the plurality of light emitting portions LE are arranged in a matrix in the first direction X and the second direction Y in the irradiation region 10A, and are supported by the support substrate 11. Each of the light emitting sections LE includes a plurality of types of light emitting elements having different peak wavelengths, and includes, for example, a first light emitting element LD1 and a second light emitting element LD2. In fig. 4, the first light emitting element LD1 and the second light emitting element LD2 are distinguished by different hatching, the first light emitting element LD1 is shown by a horizontal line, and the second light emitting element LD2 is shown by a vertical line. The light emitting section LE may include three or more light emitting elements having different peak wavelengths.
The first light emitting element LD1 is configured to irradiate ultraviolet rays of a first peak wavelength included in the first wavelength region. The second light emitting element LD2 is configured to emit ultraviolet rays of a second peak wavelength included in the second wavelength region. The second peak wavelength is a different wavelength than the first peak wavelength. Each of the first light emitting element LD1 and the second light emitting element LD2 may be a micro (micro) LED having a maximum diameter of 100 μm or less, a small (mini) LED having a maximum diameter of about 100 to 300 μm, or an LED having a maximum diameter of about 300 to 500 μm.
The first wavelength region is a wavelength region in which a first material of the liquid crystal panel, which is the object O irradiated with ultraviolet light, reacts (changes in chemical formula, composition, shape, etc., such as chemical changes, physical changes, etc.). The first peak wavelength is appropriately selected according to the sensitivity of the first material. The second wavelength region is a wavelength region in which the second material of the liquid crystal panel, which is the object O irradiated with ultraviolet light, reacts. The second peak wavelength is appropriately selected in accordance with the sensitivity of the second material. The first material and the second material described herein are, for example, photosensitive resins, and are different materials from each other. For example, the first material and the second material are a material decomposed by ultraviolet irradiation, a material polymerized by ultraviolet irradiation, or the like. Specific examples of the first material and the second material include materials for forming the alignment films AL1 and AL2, materials for forming the polymer LCP in the liquid crystal layer LC, materials for forming the seal SE, and materials for forming a seal material, not shown, in the liquid crystal panel PNL described with reference to fig. 2 and the like.
The irradiation region 10A is provided with a gate line GL, a signal line SL, a power line PL, and the like. Although not shown, a switching element is provided between the gate line GL and the signal line SL. The gate line GL is connected to a gate driver 71. The signal line SL is connected to the selector 72. The power supply line PL is connected to the power supply circuit PS. The control unit 70 outputs a control signal to the gate driver 71 and the selector 72 based on the image captured by the imaging device 50, and controls the on and off of the first light emitting element LD1 and the second light emitting element LD2 in each light emitting unit LE. The gate lines GL are sequentially selected by the gate driver 71. The selector 72 selects whether to turn on the first light emitting element, the second light emitting element, or both of the light emitting parts connected to one gate line. In the present embodiment, the active matrix type irradiation region 10A is disclosed, but may be a passive type. The gate lines GL are not limited to the one selected in sequence, and the entire surface may be lighted at one time. The structure can also be as follows: each light emitting unit is provided with a memory, and is turned on or off based on information stored in the memory.
Fig. 5 is a diagram showing another configuration example of the light source panel 10. In fig. 5, the optical system 30, the polarizing plate 40, and the like are not shown. The configuration example shown in fig. 5 is different from the configuration example shown in fig. 4 in that the configuration example includes a moving mechanism 80 for moving at least one of the support substrate 11 and the stage 20 of the light source panel 10. In the light source panel 10, a plurality of light emitting portions LE are arranged in the first direction X in the irradiation region 10A and supported by the support substrate 11. In each light emitting section LE, the first light emitting element LD1 and the second light emitting element LD2 are arranged along a moving direction (for example, the second direction Y) by the moving mechanism 80. In the example shown in fig. 5, the light source panel 10 includes a plurality of light emitting portions LE arranged in one row along the first direction X, but may include a plurality of light emitting portions LE arranged in two or more rows. In such a light source panel 10, the width of the irradiation region 10A along the first direction X is larger than the width of the object O along the first direction X, and the width of the irradiation region 10A along the second direction Y is smaller than the width of the object O along the second direction Y.
In this configuration example, the support substrate 11 is moved in the forward direction Y1 along the second direction Y by the moving mechanism 80, so that the entire object O can be irradiated with ultraviolet rays. Further, the moving mechanism 80 moves the stage 20 in the reverse direction Y2 along the second direction Y, so that the entire object O can be irradiated with ultraviolet rays.
Fig. 6 is a diagram for explaining an example of control performed by the manufacturing apparatus 1 according to the present embodiment. Here, a state is shown in which the liquid crystal panel as the object O is overlapped with the light source panel 10. As described above, the object O includes the first material P1 that reacts in the first wavelength region and the second material P2 that reacts in the second wavelength region.
The control section 70 controls each of the light emitting sections LE based on the image captured by the imaging device 50. For example, the control unit 70 controls the light emitting unit LE1 determined to overlap the first material P1 based on the image so as to light up the first light emitting element LD 1. The control unit 70 controls the light emitting unit LE2 determined to overlap the second material P2 based on the image so as to light up the second light emitting element LD2. The illuminated first light emitting element LD1 and second light emitting element LD2 are shown with hatching expressed in the figure as standard intensity (normal-intensity). When the boundary between the first material and the second material cannot be recognized by the imaging device, the boundary may be estimated by recognizing a predetermined pattern of the display panel provided in correspondence with the boundary or a predetermined pattern provided on the display panel separately from the boundary. Instead of using the imaging device, the boundary may be determined based on CAD data or the like.
The ultraviolet intensity (or exposure amount) of the first light emitting element LD1 of the light emitting section LE1 and the ultraviolet intensity (or exposure amount) of the second light emitting element LD2 of the light emitting section LE2 are appropriately set according to the photosensitive characteristics of the first material P1 and the second material P2, respectively. Based on the control of the control unit 70, the first light emitting element LD1 irradiates the first material P1 with ultraviolet rays having a wavelength optimal for the reaction of the first material P1, and the second light emitting element LD2 irradiates the second material P2 with ultraviolet rays having a wavelength optimal for the reaction of the second material P2.
In the example shown in fig. 6, the second light emitting element LD2 of the light emitting unit LE1 is turned off, but the second light emitting element LD2 may be turned on when the second peak wavelength contributes to the reaction of the first material P1. Similarly, the first light emitting element LD1 of the light emitting section LE2 is turned off, but may be turned on. The structure is not limited to the structure in which only one light emitting element constituting the light emitting portion emits light, and may be a structure in which a plurality of light emitting elements of the light emitting portion emit light. In this case, the luminance of each light-emitting element can be made different. The turned-OFF first light emitting element LD1 and second light emitting element LD2 are shown by hatching expressed as OFF (OFF) in the figure.
According to this configuration example, when the object O having a plurality of materials having the most appropriate wavelength for the reaction and the most appropriate exposure amount are irradiated with ultraviolet light, the ultraviolet light can be irradiated with high accuracy in one irradiation step. Therefore, a reduction in yield can be suppressed.
Here, attention is paid to the boundary B1 between the first material P1 and the second material P2. The first light emitting portion LE10 of the plurality of light emitting portions LE overlaps with both the first material P1 and the second material P2. The control unit 70 controls the first light emitting element LD1 and the second light emitting element LD2 to be turned off in the first light emitting unit LE 10. This prevents the first material P1 and the second material P2 from being irradiated with ultraviolet rays having an undesired wavelength.
The second light emitting portion LE12 and the third light emitting portion LE13 overlap the first material P1, but do not overlap the second material P2. The third light emitting portion LE13 is located between the first light emitting portion LE10 and the second light emitting portion LE 12. The control unit 70 controls the first light emitting element LD1 to be turned on in each of the second light emitting unit LE12 and the third light emitting unit LE 13. However, the ultraviolet intensity of the first light emitting element LD1 of the third light emitting section LE13 is higher than the ultraviolet intensity of the first light emitting element LD1 of the second light emitting section LE 12. The first light emitting element LD1 of the second light emitting section LE12 is shown by hatching in the figure expressed as standard intensity (normal-intensity), and the first light emitting element LD1 of the third light emitting section LE13 is shown by hatching in the figure expressed as high-intensity. Thereby, the shortage of the exposure amount to the first material P1 caused by the extinction of the first light emitting element LD1 of the first light emitting portion LE10 overlapping with the boundary B1 is compensated.
Similarly, the light emitting portions LE22 and LE23 overlap the second material P2, but do not overlap the first material P1. The light emitting portion LE23 is located between the first light emitting portion LE10 and the light emitting portion LE 22. The control unit 70 controls the second light emitting element LD2 to be turned on in each of the light emitting units LE22 and LE 23. However, the ultraviolet intensity of the second light emitting element LD2 of the light emitting section LE23 is higher than the ultraviolet intensity of the second light emitting element LD2 of the light emitting section LE 22. The second light emitting element LD2 of the light emitting section LE22 is shown by hatching expressed as standard intensity (normal-intensity) in the drawing, and the second light emitting element LD2 of the light emitting section LE23 is shown by hatching expressed as high-intensity (high-intensity) in the drawing. Thereby, the underexposure of the second material P2 caused by the extinction of the second light emitting element LD2 of the first light emitting portion LE10 overlapping with the boundary B1 is compensated. That is, in the vicinity of the boundary B1, ultraviolet rays are irradiated so as to achieve the optimum exposure amount for either the first material P1 or the second material P2, thereby suppressing the residual of unreacted substances. Depending on the first material P1 and the second material P2 in the vicinity of the boundary B1, both the second light emitting elements LD2 of the first light emitting section LE10 overlapping the boundary B1 may be turned on. In order to adjust the exposure amount for each region, the exposure amount may be adjusted by changing the light emission time in addition to the method of increasing the amount of current supplied to the light emitting element. The irradiation of light to the first material P1 and the second material P2 may be started at the same time, or the light may be first irradiated to one material and the light may be irradiated to the other material after the reaction of the one material is started.
The second light emitting element LD2 is turned on for the light emitting portion LE24 overlapped with the edge E2 of the second material P2. In addition, for the light emitting portion LE25 that does not overlap with both the first material P1 and the second material P2, both the first light emitting element LD1 and the second light emitting element LD2 are turned off.
Fig. 7 is a diagram for explaining an example of control performed by the manufacturing apparatus 1 according to the present embodiment. Here, a state is shown in which the liquid crystal panel as the object O is overlapped with the light source panel 10. The object O includes a first material P1 and a light shielding material P3 that react in a first wavelength region. The light shielding material P3 is a material for forming a light shielding layer such as a black matrix, an opaque wiring, a circuit, and the like, for example. A part of the first material P1 overlaps the light shielding material P3. In the case where the light shielding material P3 is located between the light source panel 10 and the first material P1, ultraviolet rays irradiated from the light source panel 10 are shielded by the light shielding material P3. Therefore, control for irradiating ultraviolet rays to the first material P1 overlapped with the light shielding material P3 is required.
Here, attention is paid to the boundary B2 between the first material P1 and the light shielding material P3. The first light emitting portion LE31 among the plurality of light emitting portions LE overlaps with both the first material P1 and the light shielding material P3. The second light emitting portion LE32 overlaps the first material P1, but does not overlap the light shielding material P3. The second light emitting portion LE32 is adjacent to the first light emitting portion LE 31. The control unit 70 controls the first light emitting element LD1 to be turned on in each of the first light emitting unit LE31 and the second light emitting unit LE 32. However, the ultraviolet intensity of the first light emitting element LD1 of the first light emitting section LE31 is higher than the ultraviolet intensity of the first light emitting element LD1 of the second light emitting section LE 32. The first light emitting element LD1 of the second light emitting section LE32 is shown by hatching expressed as standard intensity (normal-intensity) in the drawing, and the first light emitting element LD1 of the first light emitting section LE31 is shown by hatching expressed as high-intensity (high-intensity) in the drawing.
In this way, by making the ultraviolet intensity of the first light emitting element LD1 overlapping the boundary B2 higher than the ultraviolet intensity of the other first light emitting elements LD1, the ultraviolet irradiated from the first light emitting element LD1 propagates to the first material P1 overlapping the light shielding material P3, and the shortage of the exposure light to the first material P1 caused by overlapping the light shielding material P3 is compensated. Therefore, the remaining of unreacted substances is suppressed.
As described above, according to the present embodiment, it is possible to provide a manufacturing apparatus and a manufacturing method of a display panel capable of suppressing a decrease in the yield.
The present invention is not limited to the above-described embodiments, and the constituent elements may be modified and embodied in the stage of implementation without departing from the gist thereof. For example, the light emitting element is not limited to an ultraviolet light emitting element, and may be an element that emits visible light or infrared light, or a combination thereof. In addition, the number of first light-emitting elements and the number of second light-emitting elements are uniform, but the number of either light-emitting element may be increased. In addition, although the structure in which a plurality of light emitting elements are provided in the light emitting portion has been described, the light emitting portion is not particularly limited, and the first light emitting element may be arranged in a predetermined region, and the second light emitting element may be arranged in other regions, and the respective elements may be driven independently. Further, when a situation in which only a specific light-emitting element is used for a long time continues, the light-emitting efficiency may be lowered. In order to prevent this, the arrangement position of the object on the stage may be appropriately changed, and the light emitting elements used may be made different. Further, although a liquid crystal panel is disclosed as a display panel, the present invention can be applied to a display panel using an OLED, a micro LED, or the like as long as the liquid crystal panel has a step of changing the composition or characteristics of a material by irradiation with light. The present invention is not limited to the display panel, and can be applied to all electronic devices such as a sensor array. In addition, various aspects can be formed by appropriate combinations of the plurality of constituent elements disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. The constituent elements in the different embodiments may be appropriately combined.
Claims (9)
1. A display panel manufacturing apparatus for irradiating ultraviolet rays to a display panel,
the manufacturing apparatus includes a plurality of light emitting portions arranged at least in one direction, an imaging device that images the display panel, and a control portion that controls each of the plurality of light emitting portions based on an image imaged by the imaging device,
each of the light emitting sections includes:
a first light emitting element that irradiates ultraviolet rays of a first peak wavelength to a region having a first material in the display panel; and
a second light emitting element that irradiates ultraviolet rays of a second peak wavelength to a region having a second material in the display panel,
the second peak wavelength is different from the first peak wavelength,
the control section turns on the first light emitting element in the light emitting section when the light emitting section overlaps the first material, turns on the second light emitting element in the light emitting section when the light emitting section overlaps the second material,
the plurality of light emitting portions includes a first light emitting portion,
the control unit turns off the first light emitting element and the second light emitting element in the first light emitting unit overlapping with both the first material and the second material.
2. The manufacturing apparatus according to claim 1, wherein,
the plurality of light emitting parts includes a second light emitting part and a third light emitting part located between the first light emitting part and the second light emitting part,
the control section causes the first light emitting element to be lighted in each of the second light emitting section and the third light emitting section which overlap with the first material and do not overlap with the second material,
the ultraviolet intensity of the first light emitting element of the third light emitting portion is higher than the ultraviolet intensity of the first light emitting element of the second light emitting portion.
3. The manufacturing apparatus according to claim 1, wherein,
the light emitting device further includes a support substrate that supports the plurality of light emitting units aligned in a first direction and a second direction different from the first direction.
4. The manufacturing apparatus according to claim 1, further comprising:
a support substrate that supports the plurality of light emitting sections arranged in a first direction;
a stage configured to be configured by the display panel; and
and a moving mechanism that moves at least one of the support substrate and the stage in a second direction different from the first direction.
5. The manufacturing apparatus according to claim 1, wherein,
an optical system and a polarizing plate are further provided between the plurality of light emitting units and the display panel.
6. A display panel manufacturing apparatus for irradiating ultraviolet rays to a display panel,
the manufacturing apparatus includes a plurality of light emitting portions arranged at least in one direction, an imaging device that images the display panel, and a control portion that controls each of the plurality of light emitting portions based on an image imaged by the imaging device,
each of the light emitting sections includes:
a first light emitting element that irradiates ultraviolet rays of a first peak wavelength to a region having a first material in the display panel; and
a second light emitting element that irradiates ultraviolet rays of a second peak wavelength to a region having a second material in the display panel,
the second peak wavelength is different from the first peak wavelength,
the control section turns on the first light emitting element in the light emitting section when the light emitting section overlaps the first material, turns on the second light emitting element in the light emitting section when the light emitting section overlaps the second material,
the plurality of light emitting parts includes a first light emitting part and a second light emitting part adjacent to the first light emitting part,
the control unit causes the first light emitting element to be turned on in each of the first light emitting unit overlapping with both the first material and the light shielding material and the second light emitting unit overlapping with the first material and not overlapping with the light shielding material,
the ultraviolet intensity of the first light emitting element of the first light emitting portion is higher than the ultraviolet intensity of the first light emitting element of the second light emitting portion.
7. A method for manufacturing a display panel, in which an ultraviolet irradiation device is used in which a plurality of light emitting sections each having a first light emitting element for irradiating ultraviolet light of a first peak wavelength included in a first wavelength region and a second light emitting element for irradiating ultraviolet light of a second peak wavelength included in a second wavelength region are arranged in at least one direction,
overlapping a display panel having a first material that reacts in the first wavelength region and a second material that reacts in the second wavelength region with the plurality of light emitting portions,
illuminating the first light emitting element in the light emitting portion when the light emitting portion overlaps the first material,
illuminating the second light emitting element in the light emitting portion when the light emitting portion overlaps the second material,
in a first light-emitting portion overlapping with both the first material and the second material among the plurality of light-emitting portions, the first light-emitting element and the second light-emitting element are turned off.
8. The manufacturing method according to claim 7, wherein,
in each of a second light emitting portion overlapping the first material and a third light emitting portion overlapping the first material and located between the first light emitting portion and the second light emitting portion, the first light emitting element is turned on,
the ultraviolet intensity of the first light emitting element of the third light emitting portion is higher than the ultraviolet intensity of the first light emitting element of the second light emitting portion.
9. A method for manufacturing a display panel, in which an ultraviolet irradiation device is used in which a plurality of light emitting sections each having a first light emitting element for irradiating ultraviolet light of a first peak wavelength included in a first wavelength region and a second light emitting element for irradiating ultraviolet light of a second peak wavelength included in a second wavelength region are arranged in at least one direction,
overlapping a display panel having a first material that reacts in the first wavelength region and a second material that reacts in the second wavelength region with the plurality of light emitting portions,
illuminating the first light emitting element in the light emitting portion when the light emitting portion overlaps the first material,
illuminating the second light emitting element in the light emitting portion when the light emitting portion overlaps the second material,
in each of a first light emitting portion overlapping with both the first material and the light shielding material and a second light emitting portion adjacent to the first light emitting portion and overlapping with the first material among the plurality of light emitting portions, the first light emitting element is turned on,
the ultraviolet intensity of the first light emitting element of the first light emitting portion is higher than the ultraviolet intensity of the first light emitting element of the second light emitting portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-194446 | 2019-10-25 | ||
| JP2019194446A JP2021067874A (en) | 2019-10-25 | 2019-10-25 | Manufacturing apparatus and manufacturing method for display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112711156A CN112711156A (en) | 2021-04-27 |
| CN112711156B true CN112711156B (en) | 2024-03-12 |
Family
ID=75542583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011014210.8A Active CN112711156B (en) | 2019-10-25 | 2020-09-24 | Display panel manufacturing device and manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2021067874A (en) |
| CN (1) | CN112711156B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226475A (en) * | 2003-01-20 | 2004-08-12 | Seiko Epson Corp | Method for manufacturing liquid crystal display device, and rubbing device |
| JP2007206518A (en) * | 2006-02-03 | 2007-08-16 | Epson Imaging Devices Corp | Method and device for manufacturing electro-optical device |
| JP2010256515A (en) * | 2009-04-23 | 2010-11-11 | Ushio Inc | Method for manufacturing liquid crystal panel |
| KR101460018B1 (en) * | 2013-12-12 | 2014-11-11 | 유버 주식회사 | Uv curing apparatus |
| CN204515295U (en) * | 2014-09-25 | 2015-07-29 | 东芝照明技术株式会社 | Light supply apparatus |
| JP2016066754A (en) * | 2014-09-25 | 2016-04-28 | 東芝ライテック株式会社 | Light source device |
| CN107357087A (en) * | 2017-08-16 | 2017-11-17 | 深圳市华星光电技术有限公司 | The alignment method of liquid crystal display panel |
-
2019
- 2019-10-25 JP JP2019194446A patent/JP2021067874A/en active Pending
-
2020
- 2020-09-24 CN CN202011014210.8A patent/CN112711156B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004226475A (en) * | 2003-01-20 | 2004-08-12 | Seiko Epson Corp | Method for manufacturing liquid crystal display device, and rubbing device |
| JP2007206518A (en) * | 2006-02-03 | 2007-08-16 | Epson Imaging Devices Corp | Method and device for manufacturing electro-optical device |
| JP2010256515A (en) * | 2009-04-23 | 2010-11-11 | Ushio Inc | Method for manufacturing liquid crystal panel |
| KR101460018B1 (en) * | 2013-12-12 | 2014-11-11 | 유버 주식회사 | Uv curing apparatus |
| CN204515295U (en) * | 2014-09-25 | 2015-07-29 | 东芝照明技术株式会社 | Light supply apparatus |
| JP2016066754A (en) * | 2014-09-25 | 2016-04-28 | 東芝ライテック株式会社 | Light source device |
| CN107357087A (en) * | 2017-08-16 | 2017-11-17 | 深圳市华星光电技术有限公司 | The alignment method of liquid crystal display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021067874A (en) | 2021-04-30 |
| CN112711156A (en) | 2021-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20170199429A1 (en) | Display device and method of manufacturing the same | |
| KR102381082B1 (en) | Liquid crystal display apparatus | |
| US20130342779A1 (en) | Display panel and method of manufacturing the same | |
| US20080074902A1 (en) | Lcd backlight assembly with leds | |
| KR102073006B1 (en) | Display apparatus | |
| US20060274552A1 (en) | Backlight assembly and display device having the same | |
| US10901138B2 (en) | Light source device and display apparatus provided therewith | |
| US20210373365A1 (en) | Light-curing 3D printer optical machine, printer and method of luminous display | |
| KR101354318B1 (en) | Backlight unit and liquid crystal display device having the same | |
| CN110778981B (en) | Lamp for vehicle | |
| US9075268B2 (en) | LCD device including a repair region with a metal pattern capable of being burnt down | |
| KR102406180B1 (en) | Display apparatus | |
| CN112711156B (en) | Display panel manufacturing device and manufacturing method | |
| US20160260391A1 (en) | Display apparatus and method of driving the same | |
| US9418601B2 (en) | Display device with luminance boosting unit | |
| KR101323567B1 (en) | Back light unit for display device | |
| CN108803150B (en) | Illumination device and method for carrying out alignment on MMG panel | |
| KR100712120B1 (en) | Liquid Crystal Display Device of having luminance corrector | |
| JP7345293B2 (en) | Liquid crystal elements, lighting equipment | |
| JP2010266543A (en) | Liquid crystal display | |
| US20100202132A1 (en) | Blacklighting device and display device provided with the same | |
| KR102102703B1 (en) | LED package, method of fabricating the same, and backlight unit and liquid crystal display device including the LED package | |
| KR20210042761A (en) | Display device, and driving method thereof | |
| CN111766724B (en) | Alignment inspection device | |
| KR102067418B1 (en) | Light emitting diode and liquid crystal display device having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |