WO2022181038A1 - 表示装置 - Google Patents
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- WO2022181038A1 WO2022181038A1 PCT/JP2021/048241 JP2021048241W WO2022181038A1 WO 2022181038 A1 WO2022181038 A1 WO 2022181038A1 JP 2021048241 W JP2021048241 W JP 2021048241W WO 2022181038 A1 WO2022181038 A1 WO 2022181038A1
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- insulating layer
- electrode
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- pixel
- spacer
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- 239000010410 layer Substances 0.000 claims abstract description 104
- 125000006850 spacer group Chemical group 0.000 claims abstract description 81
- 238000005192 partition Methods 0.000 claims abstract description 47
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- 239000004020 conductor Substances 0.000 description 2
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- 229910052709 silver Inorganic materials 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/88—Dummy elements, i.e. elements having non-functional features
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/805—Electrodes
- H10K59/8052—Cathodes
- H10K59/80522—Cathodes combined with auxiliary electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8723—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
Definitions
- the embodiments of the present invention relate to display devices.
- a display element comprises an organic layer between a pixel electrode and a common electrode.
- the pixels arranged in the display region of such a display device include, for example, a plurality of sub-pixels displaying different colors
- the above-described organic layer is formed using, for example, a vapor deposition mask. be done.
- JP-A-2000-195677 Japanese Patent Application Laid-Open No. 2004-207217 JP 2008-135325 A JP 2009-32673 A JP 2010-118191 A
- an object of the present invention is to provide a display device capable of suppressing degradation of display quality.
- a display device includes a substrate, a first insulating layer disposed on the substrate, and first electrodes disposed on the first insulating layer overlapping pixels provided in a display region. a second insulating layer disposed on the first insulating layer and having an opening overlapping with the first electrode; and a second insulating layer partially disposed on the second insulating layer overlapping with the display region. 1 spacer, a partition arranged on the second insulating layer and the first spacer so as to separate the pixels, an organic layer in contact with the first electrode through the opening, and on the organic layer a second electrode disposed; a second spacer partially disposed on a second insulating layer overlapping a peripheral region outside the display region; and the partition wall disposed on the second spacer. and corresponding support members.
- FIG. 1 is a diagram showing an example of the configuration of a display device according to the first embodiment.
- FIG. 2 is a diagram showing an example of the layout of sub-pixels included in a pixel.
- FIG. 3 is a diagram showing another example of the layout of sub-pixels included in a pixel.
- FIG. 4 is a diagram showing an example of a cross section of a display area of the display device.
- FIG. 5 is a diagram showing an example of spacers arranged on an insulating layer.
- FIG. 6 is a diagram showing an example of a cross section of a boundary portion between a display area and a peripheral area in a comparative example of this embodiment.
- FIG. 1 is a diagram showing an example of the configuration of a display device according to the first embodiment.
- FIG. 2 is a diagram showing an example of the layout of sub-pixels included in a pixel.
- FIG. 3 is a diagram showing another example of the layout of sub-pixels included in a pixel.
- FIG. 7 is a diagram showing an example of a cross section of the boundary portion between the display area and the peripheral area in this embodiment.
- FIG. 8 is a diagram for explaining an example of positions where the support members are arranged.
- FIG. 9 is a cross-sectional view taken along line BB' shown in FIG.
- FIG. 10 is a diagram for explaining the second embodiment.
- FIG. 11 is a plan view of the metal layers arranged in the peripheral region.
- FIG. 12 is a diagram showing a shield member arranged at a position overlapping the hole in this embodiment.
- FIG. 13 is a diagram showing an example of a shield member.
- FIG. 14 is a diagram showing another example of the shield member.
- the X-axis, Y-axis and Z-axis that are orthogonal to each other are shown as necessary to facilitate understanding.
- a direction along the X axis is called a first direction X
- a direction along the Y axis is called a second direction Y
- a direction along the Z axis is called a third direction Z.
- viewing the XY plane defined by the X axis and the Y axis is referred to as planar viewing.
- the third direction Z is defined as upward
- the direction opposite to the third direction Z is defined as downward.
- the second member may be in contact with the first member or positioned apart from the first member. may be
- the display device DSP is an organic electroluminescence display device that includes organic light emitting diodes (OLED) as display elements, and is mounted on televisions, personal computers, mobile terminals, mobile phones, and the like.
- OLED organic light emitting diodes
- FIG. 1 is a diagram showing an example of the configuration of a display device DSP according to the first embodiment.
- the display device DSP has, on an insulating substrate 10, a display area DA for displaying an image and a peripheral area SA outside the display area DA.
- the substrate 10 may be glass or a flexible resin film.
- the display area DA includes a plurality of pixels PX arranged in a matrix in the first direction X and the second direction Y.
- a pixel PX includes, for example, a plurality of sub-pixels SP.
- the pixel PX comprises a sub-pixel SP1 for displaying red, a sub-pixel SP2 for displaying green, and a sub-pixel SP3 for displaying blue.
- the pixel PX may include four or more sub-pixels SP, in addition to the above three-color sub-pixels SP, including sub-pixels for displaying other colors such as white.
- a sub-pixel SP includes a pixel circuit 1 and a display element 20 .
- a pixel circuit 1 includes a pixel switch 2 , a driving transistor 3 and a capacitor 4 .
- the pixel switch 2 and the drive transistor 3 are switch elements configured by, for example, thin film transistors (TFTs).
- the pixel switch 2 has a gate electrode connected to the scanning line GL, a source electrode connected to the signal line SL, and a drain electrode connected to one electrode forming the capacitor 4 and the gate electrode of the drive transistor 3 .
- the drive transistor 3 has a source electrode connected to the other electrode forming the capacitor 4 and the power supply line PL, and a drain electrode connected to the anode electrode of the display element 20 .
- a cathode electrode of the display element 20 is connected to the power supply line FL. Note that the configuration of the pixel circuit 1 is not limited to the illustrated example.
- the display element 20 is an organic light emitting diode (OLED) that is a light emitting element.
- OLED organic light emitting diode
- the display element 20 included in the sub-pixel SP1 is configured to emit light corresponding to the wavelength of red.
- the display element 20 included in the sub-pixel SP2 is configured to emit light corresponding to the wavelength of green.
- the display element 20 included in the sub-pixel SP3 is configured to emit light corresponding to the wavelength of blue.
- the configuration of the display element 20 will be described later.
- FIG. 2 shows an example layout of a plurality of sub-pixels SP (SP1, SP2 and SP3) included in the pixel PX.
- SP1, SP2 and SP3 sub-pixels SP
- the sub-pixels SP1, SP2, and SP3 forming one pixel PX are each formed in a substantially rectangular shape extending in the second direction Y and arranged in the first direction X. Focusing on two pixels PX arranged in the first direction X, colors displayed in adjacent sub-pixels SP are different from each other. Also, when focusing on two pixels PX arranged in the second direction Y, the colors displayed in adjacent sub-pixels SP are the same.
- the areas of the sub-pixels SP1, SP2 and SP3 may be the same or different.
- FIG. 3 shows another example of layout of a plurality of sub-pixels SP (SP1, SP2 and SP3) included in the pixel PX.
- the sub-pixels SP1 and SP2 forming one pixel PX are aligned in the second direction Y, the sub-pixels SP1 and SP3 are aligned in the first direction X, and the sub-pixels SP2 and SP3 are aligned in the first direction X.
- the sub-pixel SP1 is formed in a substantially rectangular shape extending in the first direction X, and the sub-pixels SP2 and SP3 are formed in a substantially rectangular shape extending in the second direction Y.
- the area of the sub-pixel SP2 is larger than that of the sub-pixel SP1, and the area of the sub-pixel SP3 is larger than that of the sub-pixel SP2. Note that the area of the sub-pixel SP1 may be the same as the area of the sub-pixel SP2.
- FIG. 4 shows an example of a cross section of the display area DA of the display device DSP.
- the configuration of the display element 20 included in one sub-pixel SP included in the pixel PX will be mainly described.
- the insulating layer 11 is arranged on the base material 10 .
- the pixel circuit 1 shown in FIG. 1 is arranged on the substrate 10 and covered with the insulating layer 11, but is omitted in FIG.
- the insulating layer 11 corresponds to a base layer of the display element 20, and is an organic insulating layer made of an organic material, for example.
- the insulating layer 12 is arranged on the insulating layer 11 .
- the insulating layer 12 is an organic insulating layer made of, for example, an organic material.
- the insulating layer 12 is formed so as to partition the display element 20 or the pixel PX including the display element 20, and is sometimes called a rib, for example.
- the display element 20 includes a first electrode E1, an organic layer OR and a second electrode E2.
- the first electrode E1 is an electrode arranged for each display element 20 or sub-pixel SP, and is sometimes called a pixel electrode, a lower electrode, an anode electrode, or the like.
- the second electrode E2 is an electrode arranged in common to a plurality of display elements 20 or a plurality of pixels PX (sub-pixels SP), and is called a common electrode, a counter electrode, an upper electrode, a cathode electrode, or the like.
- the organic layer OR the light-emitting layer it has
- the first electrode E1 is arranged on the insulating layer 11 and its peripheral edge is covered with the insulating layer 12.
- the first electrode E1 is electrically connected to the drive transistor 3 shown in FIG.
- the first electrode E1 is a transparent electrode made of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- the first electrode E1 may be a metal electrode made of a metal material such as silver or aluminum.
- the first electrode E1 may be a laminate of a transparent electrode and a metal electrode.
- the first electrode E1 may be configured as a laminate in which a transparent electrode, a metal electrode, and a transparent electrode are laminated in this order, or may be configured as a laminate of three or more layers.
- the insulating layer 12 has an opening OP that overlaps the first electrode E1 in each sub-pixel SP.
- the organic layer OR is arranged on the insulating layer 12 and is in contact with the first electrode E1 through the opening OP.
- the second electrode E2 is arranged on the organic layer OR so as to cover the organic layer OR.
- the second electrode E2 is a transparent electrode made of a transparent conductive material such as ITO or IZO.
- the second electrode E2 may be covered with a transparent protective film (including at least one of an inorganic insulating film and an organic insulating film).
- partition walls 13 are arranged at positions corresponding to boundaries between sub-pixels SP.
- the partition 13 has an inverse tapered shape.
- the reverse tapered shape means a shape in which the width of the upper part is larger than the width of the lower part (bottom part) like the partition 13 shown in FIG.
- the side surface of the partition wall 13 may be a plane inclined with respect to the third direction Z, or may be a curved surface.
- the partition wall 13 may be composed of a plurality of portions whose width gradually decreases from the top to the bottom.
- the partition wall 13 is formed so as to overlap the insulating layer 12 in plan view and partition each sub-pixel SP. With such a partition 13, the organic layer OR in contact with the first electrode through the opening OP of the insulating layer 12 can be formed so as to be separated for each sub-pixel SP. It is possible to suppress the lateral leak that occurs when the edge of one of the organic layers OR overlaps the edge of the other organic layer OR.
- the second electrode E2 is formed so as to cover the organic layer OR. are formed so as to be partitioned into regions surrounded by the partition walls 13 in plan view (that is, regions overlapping the sub-pixels SP).
- the second electrode E2 is an electrode arranged in common for the plurality of display elements 20 or the plurality of pixels PX described above, and a common voltage is applied to the second electrode E2.
- the electrode E2 is formed so as to be partitioned for each sub-pixel SP as described above. Therefore, in the display device DSP, for example, a second electrode E2 formed at a position overlapping the sub-pixel SP and a second electrode E2 formed at a position overlapping the sub-pixel SP adjacent to the sub-pixel SP are connected via an auxiliary wiring (cathode wiring) CW.
- the auxiliary wiring CW is formed of a metal material and arranged on the insulating layer 12 . In this case, the partition wall 13 described above is arranged on the auxiliary wiring CW.
- the plurality of second electrodes E2 that are connected to each other via the auxiliary wiring CW in this manner are electrically connected to, for example, the feeder line FL arranged in the peripheral area SA.
- the sub-pixel SP1 displays red as described above, it is necessary to form an organic layer OR that emits red light in the display element 20 of the sub-pixel SP1 (that is, the position overlapping the sub-pixel SP1).
- the sub-pixel SP2 displays green, it is necessary to form an organic layer OR that emits green light in the display element 20 of the sub-pixel SP2 (that is, the position overlapping the sub-pixel SP2).
- the sub-pixel SP3 displays blue, it is necessary to form an organic layer OR that emits blue light in the display element 20 of the sub-pixel SP3 (that is, the position overlapping the sub-pixel SP3).
- the organic layer OR is formed by, for example, a vacuum vapor deposition method.
- An organic layer OR is formed for each sub-pixel SP displaying .
- the vapor deposition mask When forming the organic layer OR using such a vapor deposition mask, if the distance between the sub-pixel SP (first electrode E1) and the vapor deposition mask is short, the vapor deposition mask comes into contact with the sub-pixel SP and the sub-pixel The SP may be damaged by foreign matter or the like.
- spacers are partially arranged on the insulating layer 12 overlapping the display area DA, for example.
- FIG. 5 shows an example of spacers arranged on the insulating layer 12.
- the spacer SPC is formed of the same material (organic material) as the insulating layer 12 (that is, formed integrally with the insulating layer 12). , may be formed as a member separate from the insulating layer 12 .
- the auxiliary wiring CW is arranged between the spacer SPC and the partition wall 13 .
- the spacers SPC are partially arranged on the insulating layer 12 as described above. If the spacing between the spacers SPC is too narrow, foreign matter tends to adhere to the spacers SPC and the partition walls 13 arranged on the spacers SPC when the vapor deposition mask is used. Therefore, it is preferable that the spacers SPC are arranged at appropriate intervals. Specifically, when a plurality of sub-pixels SP are arranged in the layout shown in FIG. 3, the spacer SPC may be arranged, for example, at a position between the sub-pixels SP1 and SP2 in plan view. can.
- the partition wall 13 is arranged on the spacer SPC (and auxiliary wiring CW).
- the organic layer OR is formed using a vapor deposition mask in such a configuration, since the vapor deposition mask is placed on the partition 13, the spacer SPC and the partition 13 properly separate each sub-pixel SP and the vapor deposition mask. A sufficient distance can be maintained, and damage to the sub-pixel SP due to foreign matter or the like can be suppressed.
- the spacers SPC are formed in the display area DA, the spacers SPC are also formed in the peripheral area SA outside the display area DA in order to simplify the process of forming the spacers SPC.
- FIG. 6 schematically shows an example of a cross section of a boundary portion between a display area DA and a peripheral area SA of a display device according to a comparative example of this embodiment. Note that FIG. 6 shows a state when the organic layer OR is formed using the vapor deposition mask 100, and the second electrode E2 and the like formed after the organic layer OR are omitted.
- the partition walls 13 for separating the sub-pixels SP are arranged.
- the partition 13 is not arranged in the peripheral area SA that does not have the pixels PX (sub-pixels SP).
- the spacers SPC are formed over the display area DA and the peripheral area SA as described above, but the partition walls 13 are not arranged in the peripheral area SA.
- the position (height) for supporting the vapor deposition mask 100 used for forming the organic layer OR is different from SA. Specifically, in the peripheral area SA, the support position of the vapor deposition mask 100 is lowered because the partition 13 is not arranged. In this case, when the organic layer OR is formed using the vapor deposition mask 100, the vapor deposition mask 100 is distorted, and the organic layer OR formed using the vapor deposition mask (that is, the sub-pixel SP) is misaligned. can be a factor.
- the distance between the vapor deposition mask 100 and the insulating layer 12 is short in the peripheral area SA, foreign matter or the like adhering to the vapor deposition mask 100 is transferred to the insulating layer 12, which may cause dark spots (non-light emitting pixels), for example. That is, according to the comparative example of the present embodiment, there is a possibility that the display quality may be degraded due to positional deviation of the organic layer OR, dark spots, and the like.
- a support member 14 corresponding to the partition wall 13 is further arranged on the spacer SPC arranged on the insulating layer 12 overlapping the peripheral area SA. configuration.
- the support members 14 are such that the height (thickness in the third direction Z) of the spacers SPC and the support members 14 arranged in the peripheral area SA is equal to the height (thickness in the third direction Z) of the spacers SPC and the partition walls 13 arranged in the display area DA. thickness in the third direction Z).
- the partition walls 13 are arranged above the auxiliary wirings CW, so the support members 14 are arranged so that the height of the spacers SPC and the support members 14 arranged in the peripheral area SA is in the display area DA. It may be formed to have the same height as the spacer SPC, the partition wall 13 and the auxiliary wiring CW.
- the support member 14 is made of the same material as the partition wall 13 and has the same shape as the partition wall 13 (inverted tapered shape, etc.).
- the support member 14 may be made of a material different from that of the partition 13 and may have a shape different from that of the partition 13 .
- the spacer (for convenience, hereinafter referred to as the first spacer) SPC arranged on the insulating layer 12 overlapping the display area DA will be described.
- the first spacer SPC is arranged, for example, between the sub-pixels SP1 and SP2 forming the pixel PX in plan view. That is, the first spacers SPC are arranged at regular intervals on the insulating layer 12 in the display area DA.
- each of the sub-pixels SP shown in FIG. 8 is partitioned by the partition walls 13 as described above, and FIG. 5 above shows a cross section along line AA' shown in FIG.
- a cross section along line BB' shown in FIG. 8 is as shown in FIG.
- the support member 14 is arranged on the spacer (hereinafter referred to as a second spacer) SPC arranged in the peripheral area SA. It is assumed to be formed at the same interval as the first spacers SPC arranged in the area DA.
- the second spacers SPC are similarly arranged at equal intervals in the peripheral area SA. Also, the interval at which the second spacers SPC are partially arranged on the insulating layer 12 is substantially the same as the interval at which the first spacers SPC are partially arranged on the insulating layer 12 .
- the first spacer SPC is arranged between the sub-pixels SP1 and SP2, and the second spacer SPC is arranged at substantially the same interval as the first spacer SPC. and the positions and intervals at which the second spacers SPC are arranged may differ from those shown in FIG. Specifically, the positions and intervals at which the first and second spacers SPC are arranged may be determined according to, for example, the layout of the pixels PX (sub-pixels SP), or may be determined according to the layout of the pixels PX (sub-pixels SP). It may be determined according to the mask material or the like.
- the first spacer SPC is partially arranged on the insulating layer 12 (second insulating layer) overlapping the display area DA, and the first spacer SPC is arranged on the first spacer SPC. and a second spacer SPC partially disposed on the insulating layer 12 overlapping with the peripheral region SA, a supporting member 14 corresponding to the partition 13 is placed on the second spacer SPC. are placed further.
- the vapor deposition mask 100 when used (that is, during vapor deposition of the organic layer OR), the vapor deposition mask 100 is placed in the display area DA and the peripheral area SA in a flat state.
- the 100 can be prevented from coming into contact with the sub-pixel SP, the peripheral area SA (insulating layer 12), and the like. According to this, damage to the sub-pixels SP and the peripheral area SA (generation of dark spots) and displacement of the organic layer OR (sub-pixels SP) during vapor deposition are prevented, and deterioration in display quality in the display device DSP is suppressed. be able to.
- the height of the second spacer SPC and the support member 14 (the length in the third direction Z) should be equal to the height of the first spacer SPC and the partition walls. It is preferably substantially the same as the length (the length in the third direction Z).
- the first spacers SPC are arranged on the insulating layer 12 overlapping the display area DA at equal intervals, and the second spacers SPC are arranged on the insulating layer 12 overlapping the peripheral area SA at equal intervals.
- the spacing at which the second spacers SPC are partially disposed over the insulating layer 12 is substantially the same as the spacing at which the first spacers SPC are partially disposed over the insulating layer 12. .
- the vapor deposition mask 100 can be stably installed when forming the organic layer OR.
- the first and second spacers SPC are made of the same material as the insulating layer 12, thereby simplifying the process of forming the first and second spacers SPC.
- the first and second spacers SPC may be formed of a material different from that of the insulating layer 12 (that is, by a process different from the process of forming the insulating layer 12).
- the partition wall 13 is formed so that the width of the upper portion is larger than the width of the lower portion (for example, a reverse tapered shape). According to such a partition wall 13, for example, even if there is a slight deviation in the vapor deposition position of the organic layer OR, the organic layer OR can be appropriately separated for each pixel, and the above-described lateral leak can be prevented. can be suppressed.
- the second electrode E2 arranged at a position overlapping with the sub-pixel SP (first pixel) is arranged at a position overlapping with the sub-pixel SP adjacent to the sub-pixel SP.
- the two electrodes E2 are connected to each other via an auxiliary wiring arranged between the insulating layer 12 or the first spacer SPC and the partition wall 13 . According to this, it is possible to apply a common voltage to each of the sub-pixels SP via the second electrode E2 even in the configuration in which the partition walls 13 that partition the sub-pixels SP are arranged.
- the support member 14 is arranged only on the second spacer SPC in the present embodiment, the support member 14 may be arranged on at least the second spacer SPC. That is, for example, when the support member 14 is formed at the same time as the process of forming the partition wall 13, the support member 14 is formed not only on the second spacer SPC (that is, the position overlapping the second spacer) but also on the peripheral region. It may be formed in other regions within the SA.
- FIG. 10 shows an example of a cross section of the peripheral area SA included in the display device according to this embodiment.
- the first electrode E1 is arranged on the insulating layer 11 in the display area DA of the display device DSP according to the first embodiment described above.
- a metal layer ML made of a metal material such as silver or aluminum is arranged on the insulating layer 11 (that is, in the same layer as the first electrode E1).
- the structure above the insulating layer 12 is omitted.
- This metal layer ML is used, for example, as a wiring (cathode wiring) or the like for connecting the above-described second electrode E2 to the feeder line FL or the like arranged in the peripheral area SA.
- the insulating layer 11 on which the metal layer ML is arranged is made of an organic material. If the ML is formed over a wide range of the peripheral area SA, the metal layer ML may be peeled off from the insulating layer 11 .
- FIG. 11 is a plan view of the metal layer ML arranged in the peripheral area SA as described above.
- a plurality of rectangular holes H are formed at predetermined intervals. may be formed.
- the metal layer ML may be formed in a shape different from that in FIG.
- the insulating layer 11 is exposed by such a plurality of holes H, and moisture and gas desorbed from the organic material forming the insulating layer 11 can be removed.
- a circuit section including TFTs (for example, a gate drive circuit connected to the scanning line GL, etc.) is provided below the metal layer ML. also serves as a light shielding layer that prevents light from entering the gate drive circuit.
- a shield is formed on the insulating layer 12 overlapping the hole H formed in the metal layer ML arranged in the peripheral area SA.
- a member (light shielding member) S is arranged.
- the shield member S is made of, for example, a metal material.
- FIG. 13 shows a plan view of the metal layer ML and the shield member S.
- the holes H are closed at positions overlapping each of the plurality of holes H formed in the metal layer ML.
- the shield member S is formed in an island shape. According to this, since the shield member S blocks the light entering the circuit section through the plurality of holes H, the above-described light leakage can be suppressed. That is, in the present embodiment, the circuit section (gate drive circuit, etc.) does not malfunction due to light leakage, and deterioration of display quality in the display device DSP can be avoided.
- the shield members S formed at positions overlapping each of the plurality of holes H are connected to each other.
- the shield member S can be used as a cathode wiring or the like while suppressing the light leakage described above.
- DSP display device
- DA display area
- SA peripheral area
- PX pixel
- E1 first electrode
- OP opening
- E2 second electrode
- OR organic layer
- CW... auxiliary wiring SPC... spacer
- ML ML... metal layer
- H... hole S... shield part
- 10 base material
- 13 Partition wall
- 14 Supporting member
- 20 Display element
- 100 Evaporation mask.
Abstract
Description
図1は、第1実施形態に係る表示装置DSPの構成の一例を示す図である。表示装置DSPは、絶縁性の基材10の上に、画像を表示する表示領域DAと、当該表示領域DAの外側の周辺領域SAとを有している。基材10は、ガラスであってもよいし、可撓性を有する樹脂フィルムであってもよい。
次に、第2実施形態について説明する。なお、以下の説明においては、前述した第1実施形態と同一の部分についての詳しい説明を省略する。ここでは、第1実施形態と異なる部分について主に説明する。
Claims (7)
- 基材と、
前記基材の上に配置された第1絶縁層と、
表示領域に備えられる画素と重畳する前記第1絶縁層の上に配置された第1電極と、
前記第1絶縁層の上に配置され、前記第1電極に重畳する開口部を有する第2絶縁層と、
前記表示領域と重畳する第2絶縁層の上に部分的に配置された第1スペーサと、
前記画素を分離するように前記第2絶縁層及び前記第1スペーサの上に配置される隔壁と、
前記開口部を通じて前記第1電極と接する有機層と、
前記有機層の上に配置された第2電極と、
前記表示領域の外側の周辺領域と重畳する第2絶縁層の上に部分的に配置された第2スペーサと、
前記第2スペーサの上に配置された前記隔壁に相当する支持部材と
を具備する表示装置。 - 前記第2スペーサ及び前記支持部材の高さは、前記第1スペーサ及び前記隔壁の高さと略同一である請求項1記載の表示装置。
- 前記第1スペーサは、前記表示領域と重畳する前記第2絶縁層の上に等間隔で配置され、
前記第2スペーサは、前記周辺領域と重畳する前記第2絶縁層の上に等間隔で配置される
請求項1または2記載の表示装置。 - 前記第2スペーサが前記第2絶縁層の上に部分的に配置される間隔は、前記第1スペーサが前記第2絶縁層の上に部分的に配置される間隔と略同一である請求項3記載の表示装置。
- 前記第1スペーサ及び前記第2スペーサは、前記第2絶縁層と同一の材料で形成される請求項1~4のいずれか一項に記載の表示装置。
- 前記隔壁は、上部の幅が下部の幅よりも大きい形状を有する請求項1~5のいずれか一項に記載の表示装置。
- 第1画素と重畳する第2電極は、前記第1画素と隣接する第2画素と重畳する第2電極と、前記第2絶縁層または前記第1スペーサと前記隔壁との間に配置された補助配線を介して接続される請求項1~6のいずれか一項に記載の表示装置。
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