WO2021218412A1 - 掩膜板组件 - Google Patents
掩膜板组件 Download PDFInfo
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- WO2021218412A1 WO2021218412A1 PCT/CN2021/079862 CN2021079862W WO2021218412A1 WO 2021218412 A1 WO2021218412 A1 WO 2021218412A1 CN 2021079862 W CN2021079862 W CN 2021079862W WO 2021218412 A1 WO2021218412 A1 WO 2021218412A1
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- mask
- emitting layer
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- holes
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- 230000008020 evaporation Effects 0.000 claims abstract description 78
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/70—Testing, e.g. accelerated lifetime tests
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
Definitions
- the present disclosure relates to the technical field of display product manufacturing, and in particular to a mask assembly.
- OLED Organic Light-Emitting Diode
- OLED Organic Light-Emitting Diode
- the AA area is mostly blocked by F-mask (high-precision metal mask). Because different EL (luminescent layer) films are vapor-deposited in different chambers, each cavity There are many contents to be tested in the room, such as vapor deposition PPA (position accuracy), film thickness, optical performance, electrical performance, etc.
- vapor deposition PPA position accuracy
- film thickness film thickness
- optical performance optical performance
- electrical performance etc.
- REML red light-emitting layer
- GEML green light-emitting layer
- BEML blue light-emitting layer
- RHTL red auxiliary light-emitting layer
- GHTL green auxiliary light-emitting layer
- the FMM corresponding to the chamber will not be able to open the net, and the EL device will not be vapor-deposited according to the schedule, which will be damaged.
- the repair or re-production of the F-mask of the F-mask will take longer, which will cause the project schedule to be delayed, and more seriously, it will cause the first sample schedule to be delayed.
- the present disclosure provides a mask assembly to solve the problem of high cost of vapor-deposited EL devices and delay of the entire vapor deposition process due to damage of part of the mask.
- a mask assembly including a first mask, and a plurality of first mask strips with different effective evaporation patterns
- the first mask The board includes a first frame and a first support bar arranged between a set of opposite side frames of the first frame, and a first area of the first support bar is provided with a plurality of first through holes.
- a first hollow portion, a plurality of the first through holes are used to cooperate with a plurality of the first mask strips to form different first functional structures by evaporation;
- the first hollow portion includes three first through holes, and the three first through holes include a first sub-through hole, a second sub-through hole, and a third sub-through hole, wherein the first sub-through hole
- the hole is used for vapor deposition to form a first functional structure for testing the first characteristic of the first color light-emitting layer on the test display substrate
- the second sub-via is used for vapor deposition to form the first functional structure of the second color light-emitting layer on the test display substrate.
- a first functional structure with a characteristic, and the third sub-via is used for vapor deposition to form a first functional structure for testing the first characteristic of the third color light-emitting layer of the display substrate.
- the orthographic projection of the effective vapor deposition pattern of each first mask strip on the first mask plate is located on the corresponding first mask strip. ⁇ In the hole.
- the second mask further includes a second mask, and a variety of second mask strips with different effective evaporation patterns.
- the second mask includes a second frame, and a second mask provided on the second frame. Relative to the second support bar between a set of side frames, the second area of the second support bar is provided with a second hollow portion including a plurality of second through holes, and the plurality of second through holes are used to communicate with each other.
- a variety of the second mask strips cooperate to form different second functional structures by vapor deposition.
- the second hollow portion includes two second through holes, and the two second through holes include a fourth sub-through hole and a fifth sub-through hole, wherein the fourth sub-through hole is used for
- the second functional structure of the first characteristic of the first color auxiliary light-emitting layer on the test display substrate is formed by vapor deposition, and the fifth sub-via is used for vapor deposition to form the second color auxiliary light-emitting layer on the test display substrate
- the second functional structure of the first characteristic is formed by vapor deposition
- the fifth sub-via is used for vapor deposition to form the second color auxiliary light-emitting layer on the test display substrate
- the second functional structure of the first characteristic is formed by vapor deposition, and the fifth sub-via is used for vapor deposition to form the second color auxiliary light-emitting layer on the test display substrate.
- it further includes two kinds of the second mask strips, and the orthographic projection of the effective evaporation pattern of each second mask strip on the second mask plate is located on the corresponding second pass ⁇ In the hole.
- the second mask strip includes a first sub-mask strip and a second sub-mask strip, and the first sub-mask strip is used to form a first characteristic for testing the first characteristic of the first color auxiliary light-emitting layer.
- the second sub-mask strip is used to form a second functional structure for testing the first characteristic of the second color auxiliary light-emitting layer
- the first mask strip includes a third sub-mask strip and a fourth sub-mask strip
- the third sub-mask strip is used to form a first functional structure for testing the first characteristic of the first color light-emitting layer
- the fourth sub-mask strip is used to form a first functional structure for testing the second color light-emitting layer A characteristic first functional structure;
- the first sub-mask strip is multiplexed as the third sub-mask strip
- the second sub-mask strip is multiplexed as the fourth sub-mask strip.
- it further includes a third mask strip with different effective vapor deposition patterns, and a third area on the first support strip on the first mask plate is provided with a first mask with a plurality of third through holes.
- a third mask strip with different effective vapor deposition patterns and a third area on the first support strip on the first mask plate is provided with a first mask with a plurality of third through holes.
- Three hollow parts, a plurality of the third through holes and a plurality of the third mask strips cooperate to form different third functional structures by evaporation.
- the third hollow portion includes at least three third through holes, which are respectively used to cooperate with the first mask to form a pair of the first color light-emitting layer, the second color light-emitting layer, and the second color light-emitting layer by evaporation.
- the second characteristic of the three-color light-emitting layer is tested in the third functional structure.
- it further includes a fourth mask strip with different effective evaporation patterns, and a fourth area on the second support strip on the second mask plate is provided with a fourth area with a plurality of fourth through holes.
- a fourth mask strip with different effective evaporation patterns and a fourth area on the second support strip on the second mask plate is provided with a fourth area with a plurality of fourth through holes.
- Four hollow parts, a plurality of the fourth through holes and a plurality of the fourth mask strips cooperate to form different fourth functional structures by evaporation.
- the fourth hollow portion includes at least two of the fourth through holes, which are respectively used to cooperate with the second mask to form an auxiliary light-emitting layer of the first color and the second light-emitting layer by evaporation.
- a fourth functional structure in which the second characteristic of the color auxiliary light-emitting layer and the third color auxiliary light-emitting layer are tested.
- the beneficial effect of the present disclosure is that by providing a first hollow portion with a plurality of through holes in the first area of the first support bar, it is possible to cooperate with a variety of first mask bars with different effective vapor deposition patterns to perform vaporization.
- the plated mask can be used universally, which can save cost, and even if part of the mask is damaged, it will not cause the delay of the entire evaporation process.
- FIG. 1 shows a schematic diagram of a corresponding functional structure of vapor deposition on a display substrate to be vaporized in an embodiment of the present disclosure
- FIG. 2 shows a schematic diagram of the position of a first functional structure in an embodiment of the present disclosure
- FIG. 3 shows a schematic diagram of a first functional structure for testing the first characteristic of the first color light-emitting layer by vapor deposition in an embodiment of the present disclosure
- FIG. 4 shows a schematic diagram of a part of the structure of the first mask plate corresponding to the display substrate to be evaporated in an embodiment of the present disclosure
- FIG. 5 shows a schematic diagram of a part of the structure of the second mask plate corresponding to the display substrate to be evaporated in an embodiment of the present disclosure
- FIG. 6 shows a schematic diagram of the cooperation of the first mask plate and the first mask strip in an embodiment of the present disclosure
- FIG. 7 shows a schematic diagram of a first mask strip in an embodiment of the present disclosure
- FIG. 8 shows a schematic diagram of the cooperation of the second mask plate and the second mask strip in an embodiment of the present disclosure
- FIG. 9 shows a schematic diagram of a second mask strip in an embodiment of the present disclosure.
- FIG. 10 shows a schematic diagram of the structure of a third hollow part in an embodiment of the present disclosure.
- FIG. 11 shows a schematic diagram of the structure of a fourth hollow part in an embodiment of the present disclosure.
- FIG. 12 shows a first schematic diagram of a partial structure of the first mask in an embodiment of the present disclosure
- FIG. 13 is a second schematic diagram of a partial structure of the first mask in the embodiment of the present disclosure.
- FIG. 14 shows a partial structural diagram 1 of a second mask in an embodiment of the present disclosure
- FIG. 15 shows a second schematic diagram of a partial structure of the second mask in an embodiment of the present disclosure.
- the existing mask design requires 5 mold openings, which is not only costly, but also takes a long time to make the mask; if an accident occurs in the production of the mask, it may cause the entire project to be delayed.
- this embodiment provides a mask assembly including a first mask 01 and a plurality of first mask strips 4 with different effective evaporation patterns
- the first mask 01 includes A first frame 011, and a first support bar 2 disposed between a set of opposite side frames of the first frame 011, and a first area of the first support bar 2 is provided with a plurality of first communication channels.
- the first hollow portion 21 of the hole 210, the plurality of first through holes 210 are used to cooperate with a variety of the first mask strips 4 to form different first functional structures by vapor deposition, refer to FIG. 1.
- first hollow portion 21 With a plurality of through holes in the first area of the first support bar 2, it is made to cooperate with a variety of first mask bars 4 with different effective vapor deposition patterns for vapor deposition.
- the mask can be used universally, which can save cost, and even if part of the mask is damaged, it will not cause the delay of the entire evaporation process.
- one type of mask strip corresponds to one type of mask, and vapor deposition forms a functional structure.
- Masks used to form different functional structures cannot be used universally.
- the number of vapor deposited functional structures is equal to the number of masks. It is the same.
- the corresponding masks need to be manufactured separately, which is costly and takes a long time. If part of the mask is damaged, it may cause delays in the entire process flow.
- a mask can be matched with a variety of mask strips, that is to say, masks forming a variety of functional structures can be universal, reducing the number of mold openings when making masks.
- Cost, shorten the time for making the mask, and the first mask 01 in this embodiment is universal, and can be borrowed from each other when making a variety of the first functional structures, which greatly avoids A problem with the mask plate corresponding to an evaporation chamber causes the delay of the entire project, which greatly reduces the risk of project delay.
- the first hollow portion 21 includes three of the first through holes 210 (the first sub-through hole 211, the second sub-through hole 212, and the third sub-through hole 213).
- An effective vapor deposition pattern 41 on the first mask strip 4 corresponds to the first sub-through hole 211, and the first sub-function structure 101 is formed by vapor deposition, and the second sub-through hole 212 and the third sub-through hole 213 The position of is blocked by the mask strip and cannot be evaporated.
- an effective evaporation pattern on the first mask strip 4 corresponds to the second sub-via 212, which is formed by evaporation
- the second sub-function structure 102, and the first sub-through hole 211 and the third sub-through hole 213 are blocked by the mask strip and cannot be vapor-deposited.
- An effective vapor deposition pattern on the first mask strip 4 is the same as the third sub-pass Corresponding to the hole 213, the third sub-function structure 103 is formed by vapor deposition.
- the positions of the first sub-through hole 211 and the second sub-through hole 212 are blocked by the mask strip.
- the mask plates for forming the first sub-functional structure 101, the second sub-functional structure 102 and the third sub-functional structure 103 can be used in common, that is to say, only one mold opening can be used for vapor deposition formation.
- the three kinds of masks with the first functional structure reduce the production cost and the production time, and when the mask that forms one of the first functional structures by evaporation is damaged, the other two kinds of first functional structures can be borrowed to form the mask.
- the mask plate of the functional structure is vapor-deposited to avoid the delay of the entire process flow.
- the number of the types of the first mask strip 4 is the same as the number of the types of the first functional structure to be formed, and the number of the first through holes 210 in the first hollow portion 21 The number is the same as the number of the types of the first mask strips 4, and the number of the first hollow portions 21 included in each first mask plate 01 can be set according to actual needs.
- first support bar 2 is shown in the first mask 01 shown in FIG. 12, and the number of the first support bars 2 can be set according to actual needs.
- the setting direction of 2 can also be set according to actual needs.
- the first mask 01 may only include the first support strips 2 extending along one direction, and the first mask 01 may also include multiple extension directions at the same time.
- the first support bar 2 shown in FIG. 12 is only an exemplary structure of the first mask 01, and is not limited thereto.
- the first mask shown in FIG. 12 is only a schematic diagram, showing the result of the composition of the first mask, and the length-to-width ratio of the first support bar and the first frame are based on actual Need to be set, not limited.
- the first support bar 2 is a plate-like structure located inside the first frame 011, and at least one first hollow portion 21 is provided on the first support bar 2;
- the location of each of the first hollow portions 21 corresponds to one side of a display panel, but it is not limited to this.
- the number and position of the first through holes 210 included in the first hollow portion 21 can be set according to actual needs, as long as it is ensured that when the mask is universal, it is matched with the corresponding mask strip to form the required The functional structure is sufficient.
- the plurality of first through holes 210 in one of the first hollow portions 21 may be independent small holes, or may be connected and integral large holes, and the evaporation area is determined by The effective vapor deposition pattern on the first mask strip is determined.
- the first hollow portion 21 includes three first through holes 210, and the three first through holes 210 include a first sub-through hole 211 and a second sub-through hole 212.
- the third sub-via 213, wherein the first sub-via 211 is used for vapor deposition to form a first functional structure for testing the first characteristic of the first color light-emitting layer on the display substrate, and the second sub-via 212 The first functional structure for forming the first characteristic of the second color light-emitting layer on the test display substrate by vapor deposition, and the third sub-via 213 is used for vapor deposition to form the first function structure of the third color light-emitting layer on the test display substrate.
- the first functional structure of the feature is used for vapor deposition to form the first function structure of the third color light-emitting layer on the test display substrate.
- the first color light-emitting layer is a red light-emitting layer
- the second color light-emitting layer is a green light-emitting layer
- the third color light-emitting layer is a blue light-emitting layer, but not Limited by this.
- the first characteristic is evaporation position accuracy (PPA), but it is not limited to this.
- the three first through holes 210 include a red through hole (ie, the first sub-via 211) corresponding to the vapor deposition position of the red light-emitting layer on the display substrate, and the vapor deposition position of the green light-emitting layer on the display substrate.
- the corresponding green through hole (that is, the second sub-via 212), and the blue through hole (that is, the third sub-via 213) corresponding to the vapor deposition position of the blue light-emitting layer on the display substrate refer to 4 and Fig. 12.
- the corresponding first functional structure is located on one side of the display panel, refer to FIGS. 1 to 3, and the first mask strip 4 includes a first functional structure for forming the first characteristic of the red light-emitting layer.
- the red mask strip is used to form the green mask strip of the first functional structure for testing the first characteristic of the green light-emitting layer, and the blue mask used to form the first functional structure for testing the first characteristic of the blue light-emitting layer
- the red mask strip is matched with the first mask plate 01 for evaporation in the first evaporation chamber, the effective evaporation pattern on the red mask strip corresponds to the red through hole to expose the to-be-evaporated At this time, the green through holes and blue through holes are blocked by the red mask strip and cannot be evaporated.
- the schematic diagram of the structure after evaporation is shown in Fig.
- the green mask strip is the same as that described
- the effective vapor deposition pattern on the green mask strip corresponds to the green through hole to expose the position to be vaporized, and at this time, the red The through holes and the blue through holes are blocked by the red mask strip and cannot be evaporated;
- the blue mask strip is matched with the first mask plate 01 for evaporation in the third evaporation chamber, the blue mask The effective vapor deposition pattern on the film strip corresponds to the blue through hole to expose the position to be vaporized.
- the green through hole and the red through hole are blocked by the red mask strip, and vapor deposition cannot be performed.
- the same type of mask can be matched with different types of mask strips to form different functional structures by evaporation.
- the first mask strip 4 shown in FIGS. 6 and 7 is a red mask strip used to form a first functional structure for testing the first characteristic of the red light-emitting layer, and the effective vapor deposition pattern thereon includes a first hollow portion
- the first sub-via 211 on the 21 corresponds to the first effective vapor deposition pattern 41.
- dashed through hole in FIG. 6 indicates the vapor deposition position that is blocked, that is, the position represented by the dashed through hole is blocked by the first mask strip 4, and vapor deposition cannot be performed.
- the number of types of the first mask strips 4 is the same as the number of the first through holes 210 included in the first hollow portion 21, and the first hollow portion 21 includes three of the first through holes 210, the mask assembly also includes three types of the first mask strips 4, and the effective evaporation pattern of each of the first mask strips 4 is in the The orthographic projection on the first mask 01 is located in the corresponding first through hole 210.
- the first mask strip 4 and the first mask plate 01 are sequentially stacked on the substrate to be evaporated, and the effective evaporation pattern of each first mask strip 4 is in the
- the orthographic projection on the first mask 01 is located in the corresponding first through hole 210, so that the corresponding first through hole 210 exposes the effective evaporation pattern of the first mask strip 4, which is convenient for Evaporate the corresponding graphics.
- the mask assembly further includes a second mask 02, and a variety of second mask strips 5 with different effective evaporation patterns
- the second mask 02 includes a second frame 021, and a second support bar 3 arranged between a set of opposite side frames of the second frame 021, and a second area of the second support bar 3 is provided with a plurality of second through holes 310
- the second hollow portion 31, a plurality of the second through holes 310 are used to cooperate with a plurality of the second mask strips 5 to form different second functional structures by evaporation, refer to FIGS. 5, 8, and 9 And Figure 14.
- the arrangement of the first mask 01 makes the first hollow part 21 including a plurality of the first through holes 210 arranged on the first area of the first support bar 2, and the vapor deposition is different from the first hollow part 21.
- the second mask 02 is set so as to be consistent with
- the multiple second through holes 310 that cooperate to form different second functional structures can use the same mask, that is to say, form multiple second functional structures.
- the mask is universal.
- the second mask 02 shown in FIG. 14 only shows one second support bar 3, and the number of the second support bars 3 can be set according to actual needs.
- the setting direction of 3 can also be set according to actual needs.
- the second mask 02 can only include the second support strips 3 extending along one direction, and the second mask 02 can also include multiple extending directions at the same time.
- the second supporting strip 3 shown in FIG. 14 is only an exemplary structure of the second mask 02, and is not limited thereto.
- the second mask plate shown in FIG. 14 is only a schematic diagram, showing the composition result of the second mask plate, and the length-to-width ratio of the second support bar and the length-to-width ratio of the second frame are based on actual Need to be set, not limited.
- the number of the types of the second mask strips 5 is the same as the number of the types of the second functional structures to be formed, and the number of the second through holes 310 in the second hollow portion 31 The number is the same as the number of the types of the second mask strips 5, and the number of the second hollow portions 31 included in each second mask plate 02 can be set according to actual needs.
- the production time of the mask can be further shortened. It further effectively avoids the problem of delays in the entire process flow caused by damage to part of the mask.
- the difference between the first mask 01 and the second mask 02 is that a first hollow part 21 and a second hollow part 21 are respectively provided on different areas of the support bar at the same position.
- the orthographic projection on the diaphragm 02 coincides with the second support strip 3 on the second mask 02, and the first hollow portion 21 on the first support strip 2 is on the second mask
- the orthographic projection on 02 is located in the area outside the second area of the second support bar 3.
- the first mask 01 and the second mask 02 are integrated, that is, The first mask 01 is multiplexed as the second mask 02.
- a mask has both the first hollow part 21 and the second hollow part 31.
- the first mask 01 When the type of the strip 4 and the type of the second mask strip 5 overlap, the first mask 01 cannot be reused as the second mask 02, for example, a first functional structure During the evaporation, the first mask 01 is used to cooperate with the corresponding first mask strip 4, and when the evaporation of a second functional structure is performed, the second mask 02 is used Cooperating with a corresponding one of the second mask strips 5, the first mask strip 4 and the second mask strip 5 are the same type of mask strip, that is, the vapor deposition of the first functional structure is performed At this time, the effective vapor deposition pattern on the first mask strip 4 will leak out the second through hole 310 corresponding to the second functional structure. In this way, when the first functional structure is formed by vapor deposition, it may also be vaporized. The plating material is vapor-deposited on the leaked second through hole 310.
- the second hollow portion 31 includes two second through holes 310, and the two second through holes 310 include a fourth sub-through hole 312 and a fifth sub-through hole 313, wherein the The fourth sub-via 312 is used for vapor deposition to form a second functional structure (fourth sub-function structure 104) for testing the first characteristic of the first color auxiliary light-emitting layer on the display substrate, and the fifth sub-via 313 A second functional structure (fifth sub-functional structure 105) used for vapor deposition to test the first characteristic of the second color auxiliary light-emitting layer on the display substrate.
- the number of the second through holes 310 is set according to actual needs.
- the first color auxiliary light-emitting layer is a red auxiliary light-emitting layer
- the second color auxiliary light-emitting layer is a green auxiliary light-emitting layer. Layer, but not limited to this.
- the plurality of second through holes 310 in the second hollow portion may be small through holes that are independent of each other, or may be connected to each other as a whole and form a large hole. In this case, the corresponding second hole
- the effective vapor deposition pattern on the film strip determines the specific position and vapor deposition area of the second functional structure formed by vapor deposition.
- the plurality of second through holes 310 in the second hollow portion 31 include red auxiliary through holes corresponding to the vapor deposition position of the red auxiliary light-emitting layer, and green auxiliary holes corresponding to the vapor deposition position of the green auxiliary light-emitting layer.
- the second mask strip 5 includes a red auxiliary mask strip for testing the first characteristic of the red auxiliary light-emitting layer, and a green color mask for forming the first characteristic of the green auxiliary light-emitting layer.
- Auxiliary mask strip When the red auxiliary mask strip is matched with the second mask 02 for evaporation in the fourth evaporation chamber, the effective evaporation pattern on the red auxiliary mask strip corresponds to the red auxiliary through hole.
- the green auxiliary through hole is blocked by the red auxiliary mask strip and cannot be evaporated.
- the green auxiliary mask strip is matched with the second mask plate 02
- the effective vapor deposition pattern on the green auxiliary mask strip corresponds to the green auxiliary through hole to expose the position to be vaporized, and at this time, the red auxiliary through hole is assisted by the green The mask bar is blocked and cannot be evaporated.
- the second mask strip 5 shown in FIGS. 8 and 9 is a red auxiliary mask strip used to form a second functional structure for testing the first characteristic of the red auxiliary light-emitting layer, and the effective evaporation pattern thereon includes a second The fourth sub-through hole 312 on the hollow portion 31 corresponds to the second effective vapor deposition pattern 51.
- dashed through hole in FIG. 8 indicates the vapor deposition position that is blocked, that is, the position represented by the dashed through hole is blocked by the second mask strip 5, and vapor deposition cannot be performed.
- the second mask 02 includes at least one second hollow portion 31, and the first hollow portion 21 and the second hollow portion 31 are vapor-deposited on the display substrate plate The position is located on the same side of the display panel area on the display substrate (the display substrate includes multiple display panels), but it is not limited to this.
- two kinds of the second mask strips 5 are further included, and the orthographic projection of the effective evaporation pattern of each second mask strip 5 on the second mask plate 02 is located at the corresponding position.
- the second through hole 310 is described.
- the second mask strip 5 and the second mask 02 are sequentially stacked on the substrate to be evaporated, and the effective evaporation pattern of each second mask strip 5 is in the
- the orthographic projection on the second mask 02 is located in the corresponding second through hole 310, so that the second through hole 310 exposes the effective evaporation pattern on the second mask strip 5, which is convenient for evaporation. Plate the corresponding graphics.
- the second mask strip includes a first sub-mask strip and a second sub-mask strip
- the first sub-mask strip is used to form a test for the first characteristic of the auxiliary light-emitting layer of the first color.
- the second functional structure, the second sub-mask strip is used to form a second functional structure for testing the first characteristic of the second color auxiliary light-emitting layer
- the first mask strip includes a third sub-mask strip and a fourth sub-mask strip.
- a sub-mask strip, the third sub-mask strip is used to form a first functional structure for testing the first characteristic of the first color light-emitting layer, and the fourth sub-mask strip is used to form a test second-color light-emitting layer The first functional structure of the first characteristic;
- the first sub-mask strip is multiplexed into the third sub-mask strip, that is, the same mask strip simultaneously has an effective vaporization structure for forming a second functional structure for testing the first characteristic of the first color auxiliary light-emitting layer.
- the plating pattern, and the effective vapor deposition pattern used to form the first functional structure for testing the first characteristic of the first color light-emitting layer the second sub-mask strip is multiplexed into the fourth sub-mask strip, that is, the same
- the mask strip has both an effective evaporation pattern for forming a second functional structure for testing the first characteristic of the second color auxiliary light-emitting layer, and a first functional structure for forming the first functional structure for testing the first characteristic of the second color light-emitting layer Effective evaporation pattern.
- the first mask 01 cannot be reused as the second mask 02 That is, the first hollow part 21 and the second hollow part 31 cannot be simultaneously arranged on the same mask plate, because the mask strip of the second functional structure for testing the first characteristic of the red auxiliary light-emitting layer is formed
- the type is the same as the type of the mask strip forming the first functional structure for testing the first characteristic of the red light-emitting layer (for example, the effective evaporation pattern on one mask strip includes both the first effective evaporation pattern 41 and the second effective evaporation pattern 41).
- the first hollow portion 21 and the second hollow portion 31 are respectively located on different mask plates to avoid two vapor deposition in the same vapor deposition step. A functional structure that cannot be vapor-deposited at the same time.
- the mask assembly further includes a third mask strip with different effective evaporation patterns, and the third area on the first support strip 2 on the first mask 01 is provided with
- the third hollow portion 22 has a plurality of third through holes 201, and the plurality of third through holes 201 cooperate with a variety of the third mask strips to form different third functional structures by evaporation, refer to FIG. 10.
- FIG. 10 only shows a schematic diagram of one third hollow portion 22 on the first support bar 2.
- vapor deposition PPA vapor deposition position accuracy
- film thickness evaporation position accuracy
- optical performance evaporation performance
- electrical performance evaporation position accuracy
- holes on the mask plate evaporation position accuracy
- different film layers e.g., different film layers
- the positions of the openings on the film plate are also different.
- the openings for the vapor deposition PPA (evaporation position accuracy) test correspond to one side of each display panel on the display substrate, and the film thickness, optical properties, electrical properties, etc.
- the tested opening corresponds to the edge of the display substrate, and the third mask strip is matched with the first mask 01, and the material is vapor-deposited at the corresponding third through hole 201 to perform corresponding characteristics Test.
- the third hollow portion 22 includes at least three third through holes 201, which are respectively used to cooperate with the first mask 01 to form a light-emitting layer of the first color by evaporation. , A third functional structure for testing the second characteristics of the second color light-emitting layer and the third color light-emitting layer.
- the third mask strip forming the third functional structure for testing the film thickness is matched with the first mask 01, and the corresponding third through hole
- the material is evaporated at the position of 201 to test the film thickness of the red light-emitting layer. At this time, it can only be used on the first film thickness corresponding to the effective evaporation pattern of the third mask strip forming the third functional structure for testing the film thickness.
- the three through holes 201 can be used to vaporize the material, but the other third through holes 201 cannot, so as to avoid interference.
- the number of types of the third mask strips is related to the type of test to be performed and the number of objects to be tested.
- the number of third through holes 201 in one third hollow portion 22 Related to the number of objects to be tested, the number of the third hollow portions 22 included in each first mask can be set according to actual needs, for example, for the red light-emitting layer, the green light-emitting layer, and the blue light-emitting layer.
- the film thickness and electrical properties of the layer are tested separately, and the types of the third mask strips include six, which correspond to the test of a characteristic of a light-emitting layer. For example, one of the mask strips is used for evaporation.
- a third functional structure for testing the film thickness of the red light-emitting layer is formed by plating, and the third through hole 201 also includes six, respectively corresponding to the six types of third mask stripes.
- the plurality of third through holes 201 in the third hollow portion 22 may be a plurality of small through holes that are independent of each other, or may be connected to each other to form a large through hole (that is, a hollow portion consists of One through hole is formed).
- the specific position and the vapor deposition area of the third functional structure are determined by the effective vapor deposition pattern on the third mask strip.
- the mask assembly further includes a fourth mask strip with different effective evaporation patterns, and the fourth area on the second support strip 3 on the second mask 02 is provided with
- the fourth hollow portion 32 has a plurality of fourth through holes 301, and the plurality of fourth through holes 301 cooperate with a variety of the fourth mask strips to form different fourth functional structures by evaporation, refer to FIG. 11.
- FIG. 11 only shows a schematic diagram of a fourth hollow portion 32 on the second support bar 3.
- the fourth hollow portion 32 includes at least two fourth through-holes 301, which are respectively used to cooperate with the second mask 02, and are formed by evaporation to assist light emission of the first color.
- the fourth functional structure in which the second characteristics of the second color auxiliary light-emitting layer, the second color auxiliary light-emitting layer, and the third color auxiliary light-emitting layer are tested.
- a fourth mask strip forming a functional structure for testing the film thickness is matched with the second mask 02, in the corresponding fourth through hole 301 Evaporate the material at the position to test the film thickness of the red auxiliary luminescent layer. At this time, it can only be used in the fourth pass corresponding to the effective evaporation pattern of the fourth mask strip that forms the functional structure for testing the film thickness.
- the hole 301 can be used to vaporize the material, but the other fourth through holes 301 cannot, so as to avoid interference.
- the number of types of the fourth mask strips is related to the types of tests to be performed and the number of test objects.
- the number of fourth through holes 301 in one fourth hollow portion 32 is related to the number of The number of the types of the fourth mask bars is the same, and the number of the fourth hollow portions 32 included in each second mask plate can be set according to actual needs, for example, for the red auxiliary light-emitting layer, the green
- the film thickness and electrical properties of the auxiliary light-emitting layer are tested separately, and the fourth mask strip includes four types, which correspond to the test of one characteristic of the auxiliary light-emitting layer, for example, one of the mask strips
- the fourth functional structure is used for vapor deposition to test the film thickness of the red auxiliary light-emitting layer, and the third through hole also includes four, which respectively correspond to the four third mask strips one-to-one.
- the plurality of fourth through holes 301 in the fourth hollow portion 32 may be a plurality of small through holes that are independent of each other, or may be connected to each other to form a large through hole (that is, a hollow portion is formed by One through hole is formed).
- the specific position and the vapor deposition area of the fourth functional structure are determined by the effective vapor deposition pattern on the fourth mask strip.
- the red light-emitting layer (REML), the green light-emitting layer (GEM L), the blue light-emitting layer (BEML), and the red auxiliary light-emitting layer (RHTL) are respectively performed in five vapor deposition chambers.
- the first mask 01 is used for vapor deposition to form the red light-emitting layer (REML), the green light-emitting layer (GEM L) ), the functional structure for testing the characteristics of the blue light-emitting layer (BEML), each chamber has a lot of content that needs to be tested, such as vapor deposition PPA (evaporation position accuracy), film thickness, optical performance, electrical performance, etc., Therefore, the mask is designed with many holes, and the opening positions on the mask are different for different film layers.
- Figures 1 to 3 show the test of the PPA (evaporation position accuracy) of the corresponding film layer.
- a structure 100 including the first functional structure and the second functional structure
- a second structure 200 for testing film thickness that is, the third functional structure
- a third structure 300 for testing electrical performance and optical performance testing
- the display substrate 1 includes a plurality of display panels 11, and one side of each display panel 11 is provided with the first structure 100, and the display substrate 1
- the second structure 200, the third structure 300, and the fourth structure 400 are provided on the edge of.
- the plurality of first through holes 210 in the first hollow portion 21 on the first mask 01 including red through holes corresponding to the first functional structure for testing the first characteristic of the red light-emitting layer, and the test
- the green through hole corresponding to the first functional structure of the first characteristic of the green light-emitting layer, and the blue through hole corresponding to the first functional structure of the first characteristic of the blue light-emitting layer (it should be noted that The first through hole 210 is not painted in red, green, or blue, but is named corresponding to the correspondingly formed structure for distinguishing), and the second mask 02 is used to vaporize to form a test red
- the second functional structure of the first characteristic of the auxiliary light-emitting layer (RHTL) and the green auxiliary light-emitting layer (GHTL), the second through hole 310 in the second hollow portion 31 on the second mask 02 Including a second functional structure red auxiliary via hole for forming the first characteristic of the red auxiliary light-emitting layer, and a green auxiliary via hole for
- the first characteristic is an evaporation position accuracy test, but it is not limited to this.
- the corresponding effective vapor deposition pattern of the first mask strip 4 corresponds to the red through hole, and at this time, the green through hole and The blue through hole is blocked by the first mask strip 4.
- the effective value of the corresponding first mask strip 4 corresponds to the green through hole, and at this time, the red through hole and the blue through hole are blocked by the first mask strip 4, and the first characteristic of the first characteristic of the blue light-emitting layer is tested by vapor deposition.
- the corresponding effective vapor deposition pattern of the first mask strip 4 corresponds to the blue through hole, and at this time, the green through hole and the red through hole are used by the first mask strip 4 Occlude.
- the principle of the second functional structure for testing the first characteristic of the red auxiliary light-emitting layer by vapor deposition through the second mask 02 is the same as the principle of the second functional structure for testing the first characteristic of the green auxiliary light-emitting layer.
- the third mask strip to cooperate with the first mask 01 to adjust various characteristics other than the first characteristics of the red light-emitting layer, the green light-emitting layer, and the blue light-emitting layer.
- the positions of the test holes forming the functional structure for testing different characteristics are different.
- the functional structure forming the vapor deposition position accuracy test corresponds to one side of the display panel of the display substrate, and the corresponding through hole is located in the middle of the mask.
- Area, and the functional structure forming the test film thickness, electrical properties, etc. corresponds to the edge of the display substrate, and the corresponding through holes are located at the edge of the mask.
- the first mask 01 and different third mask strips can be used.
- the different effective vapor deposition patterns on the third mask strip are used to form functional structures for testing different characteristics.
- the first mask plate 01 and the corresponding third mask strip are co-evaporated.
- the second mask 02 can be used to cooperate with different fourth mask strips, for example, to form a functional structure corresponding to the deposition position accuracy test
- the corresponding through hole is located in the middle area of the mask, and the functional structure forming the test film thickness, electrical properties, etc. corresponds to the edge of the display substrate, and the corresponding through hole is located on the mask.
- the different effective vapor deposition patterns on the fourth mask strip are used to form functional structures for different characteristic tests. For example, when vapor deposition of a functional structure used to test the film thickness of the red auxiliary light-emitting layer, use The second mask 02 and the corresponding third mask strip are co-evaporated.
- the masks for the functional structure of the red light-emitting layer, the green light-emitting layer, the blue light-emitting layer, the red auxiliary light-emitting layer, and the green auxiliary light-emitting layer are divided into two types.
- the first mask 01 is vapor-deposited to form a functional structure for testing various characteristics of the red light-emitting layer, the green light-emitting layer, and the blue light-emitting layer.
- the second mask 02 is vapor-deposited to form the test red auxiliary light-emitting layer and the green auxiliary light-emitting layer.
- the multi-characteristic functional structure of the light-emitting layer so that when making the mask, only need to open the mold twice, which saves costs, greatly shortens the time for making the mask, and in actual operation, there are still ten masks.
- Diaphragm because there are five vapor deposition chambers), but the first mask 01 of the functional structure for testing the characteristics of the red, green, and blue light-emitting layers by vapor deposition can be used in general, and the vapor deposition test red is assisted
- the second mask 02 of the functional structure with the characteristics of the light-emitting layer and the green auxiliary light-emitting layer can be used universally. Even if the mask used for vapor deposition of a functional structure is damaged, you can also borrow other universal masks for vaporization. Plating to avoid delays in the entire process flow.
- the corresponding light-emitting layer is the same as the functional structure. It is formed by simultaneous evaporation, that is, the first support bar 2 of the first mask 01 has a plurality of the first through holes 210 for forming different first functional structures 210 by evaporation, and the first A support bar 2 has a plurality of through holes in the first functional area for vapor deposition to form the functional layer to be tested.
- the effective vapor deposition pattern on the corresponding first mask bar includes matching with the first through holes 210
- the vapor deposition pattern of the first functional structure 210 is formed, and it has the vapor deposition pattern that cooperates with the through hole of the first functional area to form the functional layer to be tested.
- the first functional structure for testing the first characteristic of the first color light-emitting layer on the display substrate is formed by evaporation
- the light-emitting layer is formed by simultaneous vapor deposition, that is, the first support strip 2 of the first mask 01 has a first sub-through hole, and the first sub-through hole is used for vapor deposition to form the first color on the test display substrate
- the light-emitting layer has a first characteristic and a first functional structure
- the first support strip 2 of the first mask 01 has a first functional area through hole for vapor deposition to form the first color light-emitting layer. Referring to FIG. 13, the vapor deposition position of the through hole 001 in the first functional area is shown in FIG. 13.
- the second mask 02 when used for vapor deposition to form a second functional structure for testing the first characteristic of the first color auxiliary light-emitting layer, the second functional structure and the first color auxiliary light-emitting layer
- the layer is formed by simultaneous vapor deposition, that is, the second support strip 3 of the second mask 02 has a fourth sub-through hole, and the fourth sub-through hole is used for vapor deposition to form the first color auxiliary light-emitting layer for testing the first color.
- a characteristic second functional structure, and the second support strip 3 of the second mask 02 also has a second functional area through hole for vapor deposition to form the first color auxiliary light-emitting layer. Referring to FIG. 15, the vapor deposition position of the through hole 001 in the first functional area is shown in FIG. 15.
- the second mask plate shown in FIG. 15 is only a schematic diagram, showing the composition result of the second mask plate 02, in which the aspect ratio of the second support bar 3, and the second The length and width ratio of the frame 021 is set according to actual needs and is not limited, and FIG. 15 only shows that the second support bar 3 has the second through hole 310 and the second functional area through hole 002, The size and location of the second through hole 310 and the second functional area through hole 002 are not limited.
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Abstract
Description
Claims (10)
- 一种掩膜板组件,其中,包括第一掩膜板,以及具有不同的有效蒸镀图案的多种第一掩膜条,所述第一掩膜板包括第一框架、以及设置于所述第一框架的相对的一组侧边框之间的第一支撑条,所述第一支撑条的第一区域上设置有包括多个第一通孔的第一镂空部,多个所述第一通孔用于与多种所述第一掩膜条进行配合以蒸镀形成不同的第一功能结构;所述第一镂空部包括三个所述第一通孔,三个所述第一通孔包括第一子通孔、第二子通孔、第三子通孔,其中所述第一子通孔用于蒸镀形成测试显示基板上的第一颜色发光层的第一特性的第一功能结构,所述第二子通孔用于蒸镀形成测试显示基板上的第二颜色发光层的第一特性的第一功能结构,所述第三子通孔用于蒸镀形成测试显示基板的第三颜色发光层的第一特性的第一功能结构。
- 根据权利要求1所述的掩膜板组件,其中,还包括三种所述第一掩膜条,每个所述第一掩膜条的有效蒸镀图案在所述第一掩膜板上的正投影位于对应的所述第一通孔内。
- 根据权利要求1所述的掩膜板组件,其中,还包括第二掩膜板,以及具有不同的有效蒸镀图案的多种第二掩膜条,所述第二掩膜板包括第二框架,以及设置于所述第二框架的相对的一组侧边框之间的第二支撑条,所述第二支撑条的第二区域上设置有包括多个第二通孔的第二镂空部,多个所述第二通孔用于与多种所述第二掩膜条进行配合以蒸镀形成不同的第二功能结构。
- 根据权利要求3所述的掩膜板组件,其中,所述第二镂空部包括两个所述第二通孔,两个所述第二通孔包括第四子通孔和第五子通孔,其中所述第四子通孔用于蒸镀形成测试显示基板上的第一颜色辅助发光层的所述第一特性的第二功能结构,所述第五子通孔用于蒸镀形成测试显示基板上的第二颜色辅助发光层的所述第一特性的第二功能结构。
- 根据权利要求4所述的掩膜板组件,其中,还包括两种所述第二掩膜条,每个所述第二掩膜条的有效蒸镀图案在所述第二掩膜板上的正投影位于对应的所述第二通孔内。
- 根据权利要求5所述的掩膜板组件,其中,所述第二掩膜条包括第一子掩膜条和第二子掩膜条,所述第一子掩膜条用于形成测试第一颜色辅助发光层的第一特性的第二功能结构,所述第二子掩膜条用于形成测试第二颜色辅助发光层的第一特性的第二功能结构,所述第一掩膜条包括第三子掩膜条和第四子掩膜条,所述第三子掩膜条用于形成测试第一颜色发光层的第一特性的第一功能结构,所述第四子掩膜条用于形成测试第二颜色发光层的第一特性的第一功能结构;所述第一子掩膜条复用为所述第三子掩膜条,所述第二子掩膜条复用为所述第四子掩膜条。
- 根据权利要求1所述的掩膜板组件,其中,还包括具有不同有效蒸镀图案的第三掩膜条,所述第一掩膜板上的所述第一支撑条上的第三区域设置有具有多个第三通孔的第三镂空部,多个所述第三通孔与多种所述第三掩膜条配合以蒸镀形成不同的第三功能结构。
- 根据权利要求7所述的掩膜板组件,其中,所述第三镂空部至少包括三个所述第三通孔,分别用于与所述第一掩膜板相配合、以蒸镀形成分别对第一颜色发光层、第二颜色发光层、第三颜色发光层的第二特性进行测试的第三功能结构。
- 根据权利要求3所述的掩膜板组件,其中,还包括具有不同有效蒸镀图案的第四掩膜条,所述第二掩膜板上的所述第二支撑条上的第四区域设置有具有多个第四通孔的第四镂空部,多个所述第四通孔与多种所述第四掩膜条配合以蒸镀形成不同的第四功能结构。
- 根据权利要求9所述的掩膜板组件,其中,所述第四镂空部至少包括两个所述第四通孔,分别用于与所述第二掩膜板相配合、以蒸镀形成分别对第一颜色辅助发光层、第二颜色辅助发光层、第三颜色辅助发光层的第二特性进行测试的第四功能结构。
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CN115261783B (zh) * | 2022-06-27 | 2024-09-27 | 昆山国显光电有限公司 | 一种掩膜版及其制备方法 |
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CN110029322A (zh) * | 2019-05-27 | 2019-07-19 | 京东方科技集团股份有限公司 | 基板蒸镀对位系统以及监控像素位置测量的方法和装置 |
CN110066975A (zh) * | 2019-05-14 | 2019-07-30 | 京东方科技集团股份有限公司 | 掩膜版、蒸镀装置、蒸镀方法以及掩膜版中蒸镀开口的设计方法 |
CN212025440U (zh) * | 2020-04-26 | 2020-11-27 | 京东方科技集团股份有限公司 | 掩膜板组件 |
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2020
- 2020-04-26 CN CN202020656789.7U patent/CN212025440U/zh active Active
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2021
- 2021-03-10 US US17/789,173 patent/US20230036857A1/en active Pending
- 2021-03-10 WO PCT/CN2021/079862 patent/WO2021218412A1/zh active Application Filing
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