WO2024082516A1 - 显示面板及显示装置 - Google Patents
显示面板及显示装置 Download PDFInfo
- Publication number
- WO2024082516A1 WO2024082516A1 PCT/CN2023/079476 CN2023079476W WO2024082516A1 WO 2024082516 A1 WO2024082516 A1 WO 2024082516A1 CN 2023079476 W CN2023079476 W CN 2023079476W WO 2024082516 A1 WO2024082516 A1 WO 2024082516A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- display panel
- pixel definition
- substrate
- layer
- display area
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
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- 239000004642 Polyimide Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
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- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010329 laser etching Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- KYKLWYKWCAYAJY-UHFFFAOYSA-N oxotin;zinc Chemical compound [Zn].[Sn]=O KYKLWYKWCAYAJY-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
- G09F9/335—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 being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
Definitions
- the present application belongs to the technical field of electronic products, and in particular, relates to a display panel and a display device.
- Display panels such as organic light emitting diodes (OLED) have the advantages of self-luminescence, energy saving and consumption reduction, bendability, and good flexibility.
- OLED organic light emitting diodes
- the display device that realizes display does not require a backlight source, has the characteristics of fast response speed and good display effect, and has attracted the attention of users and is widely used in terminal products such as smart phones and tablet computers.
- the embodiments of the present application provide a display panel and a display device.
- the difference between the distance from the top of the first supporting part to the substrate and the distance from the top of the second supporting part to the substrate is less than or equal to a preset difference, the difference in supporting force between the display area and the non-display area of the display panel is reduced, the strength of the display panel screen is enhanced, and the deformation of the display panel in the display area and the non-display area of the display panel is ensured to remain consistent after a drop strength test or a fall in actual use, thereby reducing the risk of damage.
- an embodiment of the present application provides a display panel having a display area and a non-display area adjacent to the display area, the display panel comprising: a substrate; a pixel definition layer disposed on one side of the substrate, the pixel definition layer comprising a first opening disposed in the display area and a second opening disposed in the non-display area; a supporting layer, the supporting layer comprising a first supporting portion and a second supporting portion, the first supporting portion being disposed on a side of the pixel definition layer located in the display area away from the substrate, and the first supporting portion and the first opening being disposed adjacent to each other, the second supporting portion being disposed on a side of the pixel definition layer located in the non-display area away from the substrate, and the second supporting portion and the second opening being disposed adjacent to each other, and along the thickness direction of the display panel, a difference between a distance from a top of the first supporting portion on a side away from the substrate to the substrate and a distance from a top of the second supporting
- an embodiment of the present application provides a display device, including: a display panel, wherein the display panel is the display panel described in any of the above embodiments.
- the display panel provided in the embodiment of the present application includes a substrate, a pixel definition layer and a support layer.
- the display area includes a first support portion and a first opening adjacent to each other, and the non-display area includes a second support portion and a second opening adjacent to each other.
- the difference between the distance from the top of the first support portion to the substrate and the distance from the top of the second support portion to the substrate is less than or equal to a preset difference, the difference in supporting force between the display area and the non-display area of the display panel is reduced, the strength of the display panel is enhanced, and the deformation of the display panel in the display area and the non-display area remains consistent after a drop strength test or a fall in actual use, thereby reducing the risk of damage.
- FIG1 is a schematic diagram of the structure of a display panel provided by an embodiment of the present application.
- FIG2 is a diagram showing a film structure provided by an embodiment at B-B in FIG1 ;
- FIG3 is a schematic diagram of the arrangement of a first support portion and a second support portion provided in an embodiment of the present application;
- FIG4 is a diagram showing a film structure provided by another embodiment at B-B in FIG1 ;
- FIG5 is a diagram showing a film layer structure provided by another embodiment at B-B in FIG1 .
- the drop strength test is one of the requirements for display panels. Due to the structural limitations of the display panel, a support portion is only set in the display area, but not in the non-display area. Alternatively, the support portion set in the display area will be higher than the support portion set in the non-display area.
- the display panel When a hard-screen display panel using Frit (glass glue) is subjected to a drop strength test, the display panel will have a difference in supporting force due to the difference in height of the support portions in the display area and the non-display area, resulting in a difference in the amount of deformation of the display panel in the display area and the non-display area after the display panel is dropped, making the non-display area of the display panel more easily damaged, affecting the uniformity of the strength of the display panel.
- Frit glass glue
- the display panel provided in the embodiment of the present application sets the difference between the distance from the top of the first supporting part to the substrate and the distance from the top of the second supporting part to the substrate to be less than or equal to a preset difference, so as to reduce the difference in supporting force between the display area and the non-display area of the display panel and reduce the risk of damage.
- Embodiments of the present application provide a display panel and a display device. Embodiments of the display panel and the display device will be described below with reference to FIGS. 1 to 5 .
- An embodiment of the present application provides a display panel having a display area AA and a non-display area NA adjacent to the display area AA.
- the display panel includes: a substrate 1; a pixel definition layer 2, which is arranged on one side of the substrate 1, and the pixel definition layer 2 includes a first opening K1 arranged in the display area AA and a second opening K2 arranged in the non-display area NA; a supporting layer 3, and the supporting layer 3 includes a first supporting portion 31 and a second supporting portion 32.
- the first supporting portion 31 is arranged on the side of the pixel definition layer 2 located in the display area AA away from the substrate 1, and the first supporting portion 31 and the first opening K1 are arranged adjacent to each other.
- the second supporting portion 32 is arranged on the side of the pixel definition layer 2 located in the non-display area NA away from the substrate 1, and the second supporting portion 32 and the second opening K2 are arranged adjacent to each other.
- the difference between the distance from the top of the first supporting portion 31 on the side away from the substrate 1 to the substrate 1 and the distance from the top of the second supporting portion 32 on the side away from the substrate 1 to the substrate 1 is less than or equal to a preset difference.
- the display panel provided in the embodiment of the present application includes a substrate 1, a pixel definition layer 2 and a support layer 3, wherein the display area AA includes a first support portion 31 and a first opening K1 disposed adjacently, and the non-display area NA includes a second support portion 32 and a second opening K2 disposed adjacently, and the difference between the distance from the top of the first support portion 31 to the substrate and the distance from the top of the second support portion 32 to the substrate is set to be less than or equal to a preset difference, so as to reduce the difference in the supporting force of the display panel between the display area AA and the non-display area NA, enhance the screen strength of the display panel, and ensure that the display panel is strong enough to withstand a drop test. In the degree test or after being dropped in actual use, the deformation of the display area AA and the non-display area NA of the display panel remain consistent, reducing the risk of damage.
- the inventors have found through research that the height of the first support portion 31 and/or the second support portion 32 can be affected by setting an opening in the pixel definition layer 2.
- the pixel definition layer 2 is usually not provided with an opening in the non-display area NA. Since the support layer 3 has a certain fluidity when preparing the support layer 3 before curing or baking, the second support portion 32 formed on the pixel definition layer 2 will decrease in height due to the flow.
- the second opening K2 is set in the pixel definition layer 2 in the non-display area NA to limit the flow range of the second support portion 32, thereby ensuring that the distance from the top of the second support portion 32 on the side away from the substrate 1 to the substrate 1, that is, the second height, can be maintained within the range of the preset difference with the distance from the top of the first support portion 31 on the side away from the substrate 1 to the substrate 1, that is, the first height.
- the thickness of the pixel definition layer 2 located in the display area AA and the thickness of the pixel definition layer 2 located in the non-display area NA may be equal or different, and the user may adjust the difference between the distance from the top of the first support part 31 to the substrate 1 and the distance from the top of the second support part 32 to the substrate 1 by adjusting the height of the first support part 31 and the second support part 32, that is, the height from the top of the first support part 31 to the pixel definition layer 2 and the height from the second support part 32 to the pixel definition layer 2.
- the thickness of the pixel definition layer 2 located in the display area AA and the thickness of the pixel definition layer 2 located in the non-display area NA are usually equal.
- the height of the first support portion 31 itself is a
- the height of the second support portion 32 itself is b
- the absolute value of the difference between a and b is the preset difference
- the specific value of the preset difference can be selected according to the height of the first support portion 31.
- the preset difference can be made less than or equal to 10% of the height of the first support portion 31 to ensure that the height difference between the first support portion 31 and the second support portion 32 is not too large, thereby improving the uniformity of the screen strength of the display area AA and the non-display area NA of the display panel.
- the support layer 3 and the pixel definition layer 2 can be made of the same material to reduce production costs.
- the material of the support layer 3 and the pixel definition layer 2 includes organic resin Materials:
- the materials of the support layer 3 and the pixel definition layer 2 can be hexamethyldisiloxane, epoxy resin or polyimide (PI) and the like.
- the first opening K1 and the second opening K2 of the pixel definition layer 2 can be formed together by the same process to reduce production costs.
- the pixel definition layer 2 can be patterned by photolithography or laser etching to form the first opening K1 and the second opening K2.
- the first support portion 31 and the second support portion 32 of the support layer 3 can also be formed together by the same process, which can reduce costs and make the first support portion 31 and the second support portion 32 in the same preparation environment, which is more conducive to achieving the same height of the first support portion 31 and the second support portion 32.
- the first support portion 31 and the second support portion 32 can also be formed by photolithography or laser etching.
- the first support portion 31 and the second support portion 32 can be formed by evaporation of the same mask plate, and there is no special limitation.
- the non-display area NA includes a partition area BA and a packaging area FA.
- the second support portion 32 is arranged in the partition area BA.
- a packaging glue is provided in the packaging area FA.
- the packaging glue is arranged on the side of the second support portion 32 away from the display area AA to achieve the packaging of the display panel frame part.
- the packaging glue can be specifically made of materials such as Frit (glass glue).
- At least two rows of second supporting parts 32 are provided in the direction from the display area AA to the non-display area NA to ensure that the second supporting parts 32 have sufficient supporting force.
- the height ratio between the first support portion 31 and the second support portion 32 ranges from 0.9 to 1.1. It can be understood that the height of the first support portion 31 and the second support portion 32 specifically refers to the distance from the top of the first support portion 31 to the pixel definition layer 2 and the distance from the top of the second support portion 32 to the pixel definition layer 2 along the thickness direction of the display panel. The smaller the height difference between the first support portion 31 and the second support portion 32, the smaller the difference in supporting force corresponding to the first support portion 31 and the second support portion 32.
- the height ratio between the first support portion 31 and the second support portion 32 ranges from 0.9 to 1.1.
- the height of the first support portion 31 is 20 ⁇ m
- the height of the second support portion 32 ranges from 18 ⁇ m to 22 ⁇ m.
- the height of the first support portion 31 and the height of the second support portion 32 are equal, that is, when the height of the first support portion 31 is 20 ⁇ m, the height of the second support portion 32 can also be 20 ⁇ m.
- the specific height values of the first support portion 31 and the second support portion 32 are only for reference. The height relationship between the supporting portions 32 does not represent the actual height of the first supporting portion 31 and the second supporting portion 32 .
- the thickness of the pixel definition layer 2 located in the display area AA and the thickness of the pixel definition layer 2 located in the non-display area NA can be made equal, and the pixel definition layer 2 located in the display area AA and the pixel definition layer 2 located in the non-display area NA are formed at one time through the same process.
- the pixel definition layer 2 includes a first pixel definition portion 21 for supporting the first support portion 31 and a second pixel definition portion 22 for supporting the second support portion 32.
- the ratio of the distance between two adjacent first pixel definition portions 21 and the distance between two adjacent second pixel definition portions 22 is in the range of 0.9 to 1.1.
- first support portion 31 and the second support portion 32 are respectively arranged on the first pixel definition portion 21 and the second pixel definition portion 22. Therefore, the distance between two adjacent first pixel definition portions 21 and the distance between two adjacent second pixel definition portions 22 will affect the arrangement density of the corresponding first support portion 31 and the second support portion 32 and the specific size of the corresponding first opening K1 and the second opening K2.
- the arrangement density of the first support portion 31 and the second support portion 32 and the specific size of the corresponding first opening K1 and the second opening K2 will both affect the deformation of the first support portion 31 and the second support portion 32 in the display area AA and the non-display area NA of the display panel after the drop strength test or the actual use.
- the ratio of the distance between two adjacent first pixel definition portions 21 and the distance between two adjacent second pixel definition portions 22 can be limited to 0.9 to 1.1, so as to reduce the arrangement difference between the first pixel definition portion 21 in the display area AA of the display panel and the second pixel definition portion 22 in the non-display area NA.
- the distance between two adjacent first pixel definition parts 21 is equal to the distance between two adjacent second pixel definition parts 22, so that the first pixel definition parts 21 and the second pixel definition parts 22 respectively provide the same support effect for the first support part 31 and the second support part 32.
- the distance between two adjacent first pixel definition parts 21 ranges from 10 ⁇ m to 50 ⁇ m
- the distance between two adjacent second pixel definition parts 22 also ranges from 10 ⁇ m to 50 ⁇ m.
- a ratio between a projection area of the first pixel definition portion 21 on the substrate 1 and a projection area of the second pixel definition portion 22 on the substrate 1 is in a range of 0.9 to 1.1.
- the inventors have experimentally measured that the size of the first pixel definition portion 21 and the second pixel definition portion 22 will affect the flow of the first support portion 31 and the second support portion 32, and further affect the height of the first support portion 31 and the second support portion 32.
- the larger the second pixel definition portion 22, the smaller the second opening K2 will be when the distance between two adjacent second pixel definition portions 22 is fixed, and the height of the second support portion 32 will be lower.
- the flow effect of the first support portion 31 and the second support portion 32 can be correspondingly limited, so that the height difference between the first support portion 31 and the second support portion 32 can meet the requirements.
- the projection area of the first pixel definition portion 21 on the substrate 1 is equal to the projection area of the second pixel definition portion 22 on the substrate 1. It can be understood that the relative relationship between the projection area of the first pixel definition portion 21 on the substrate 1 and the projection area of the second pixel definition portion 22 on the substrate 1 corresponds to the height relationship between the first support portion 31 and the second support portion 32. Therefore, when the projection areas of the first pixel definition portion 21 and the second pixel definition portion 22 are equal, it is easier to achieve the requirement that the heights of the first support portion 31 and the second support portion 32 are equal.
- the minimum distance from the second support portion 32 to the edge of the second pixel definition portion 22 corresponding to the second support portion 32 is 0 ⁇ m to 5 ⁇ m.
- the inventors experimentally measured that the greater the minimum distance between the second support portion 32 and the edge of the second pixel definition portion 22 corresponding to the second support portion 32, the greater the deformation of the second support portion 32 due to the flow, and the height of the second support portion 32 becomes shorter. Therefore, it is necessary to limit the minimum distance between the second support portion 32 and the edge of the second pixel definition portion 22 corresponding to the second support portion 32 to not be too large. At the same time, it is also necessary to prevent the second support portion 32 from flowing directly into the second opening K2.
- the minimum distance from the second supporting portion 32 to the edge of the second pixel defining portion 22 corresponding to the second supporting portion 32 is 5 ⁇ m.
- the arrangement of the first support portions 31 in the display area AA is the same as the arrangement of the second support portions 32 in the non-display area NA.
- the arrangement in this embodiment includes but is not limited to factors such as the location, specific shape, and size of the first support portion 31 or the second support portion 32.
- factors such as the location, specific shape, and size of the first support portion 31 or the second support portion 32.
- the arrangement form of the first opening K1 in the display area AA and the arrangement form of the second opening K2 in the non-display area NA are the same, so as to further improve the structural consistency of the display panel in the display area AA and the non-display area NA, while ensuring that the first opening K1 and the second opening K2 have the same blocking effect on the first support part 31 and the second support part 32 respectively, and the height difference of the second support part 32 can be maintained within the range of a preset difference with the height of the first support part 31.
- the pixel definition layer 2 needs to be specifically provided according to the different signals transmitted by the signal lines.
- the display panel further includes a signal line layer 7, the signal line layer 7 is located in the non-display area NA, and the signal line layer 7 is located between the pixel definition layer 2 and the substrate 1, the signal line layer 7 includes a low-level voltage signal line 71, and the second opening K2 exposes at least a portion of the low-level voltage signal line 71.
- the low-level voltage signal line 71 namely the VSS signal line
- the cathode layer 4 since the cathode layer 4 is vapor-deposited on the entire surface, the cathode layer 4 is provided in the display area AA and the non-display area NA. Therefore, in this embodiment, the low-level voltage signal line 71 is exposed by the second opening K2 at least partially to facilitate the connection between the low-level voltage signal line 71 and the cathode layer 4.
- the display panel further includes a cathode layer 4, which covers the side of the pixel definition layer 2 away from the substrate 1 and is partially located in the first opening K1 and the second opening K2. 71 is electrically connected to the cathode layer 4.
- the display area AA also includes an anode layer 6 and a light-emitting layer 5 stacked along the thickness direction of the display panel, and the cathode layer 4 at least partially covers the side of the light-emitting layer 5 facing away from the substrate 1.
- the low-level voltage signal line 71 can be arranged in the same layer as the anode layer 6, that is, the low-level voltage signal line 71 and the anode layer 6 can be formed by the same process and use the same material to reduce production costs.
- the signal line layer 7 includes a high-level voltage signal line 72. Since the high-level voltage signal line 72 is not connected to the cathode layer 4, the signals of the two are different. Therefore, the high-level voltage signal line 72 and the cathode layer 4 need to be separated by the pixel definition layer 2, that is, the second opening K2 will not expose the high-level voltage signal line 72 to avoid problems such as short circuit and signal crosstalk.
- the cathode layer 4 is generally made of a material with a low work function to facilitate electron injection, and can also reduce the heat generated during operation and extend the service life of the OLED device.
- the material of the cathode layer 4 can be one of metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be an alloy of the aforementioned metal materials, such as magnesium silver alloy (Mg/Ag), lithium aluminum alloy (Li/Al), etc., which is not limited in this embodiment.
- the material of the anode layer 6 is generally a material with a high work function in order to improve the hole injection efficiency.
- the material of the anode layer 6 and the signal line layer 7 can be gold (Au), platinum (Pt), titanium (Ti), silver (Ag), indium tin oxide (ITO), zinc tin oxide (IZO) or a transparent conductive polymer (such as polyaniline), etc.
- the present application also provides a display device, including: a display panel; the display panel is the display panel in any of the above embodiments.
- the display device provided in the embodiment of the present application has the technical effect of the technical solution of the display panel in any of the above embodiments, and the explanation of the structure and terminology that are the same or corresponding to the above embodiments will not be repeated here.
- the display device provided in the embodiment of the present application can be applied to a mobile phone, or it can be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, medical equipment, industrial control equipment, touch interactive terminals, etc.
- the embodiment of the present application does not make any special limitations on this.
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Abstract
本申请公开了一种显示面板及显示装置，显示面板具有显示区以及和显示区相邻设置的非显示区，显示面板包括：基板；像素定义层，设于基板一侧，像素定义层包括设于显示区的第一开口和设于非显示区的第二开口；支撑层，支撑层包括第一支撑部和第二支撑部，第一支撑部和第一开口相邻设置，且第二支撑部和第二开口相邻设置，沿显示面板的厚度方向，第一支撑部背离基板一侧的顶部到基板的距离与第二支撑部背离基板一侧的顶部到基板的距离之间的差值小于或等于预设差值。
Description
相关申请的交叉引用
本申请要求享有于2022年10月19日提交的名称为“显示面板及显示装置”的中国专利申请第202211281649.6号的优先权，该申请的全部内容通过引用并入本文中。
本申请属于电子产品技术领域，尤其涉及一种显示面板及显示装置。
随着科技的进步，智能手机、平板电脑等数字化显示装置得到广泛的应用，其中，显示面板是这些显示装置中不可或缺的人际沟通界面。诸如有机发光二极管(Organic Light Emitting Diode，OLED)显示面板，具有自发光、节能降耗、可弯曲、柔韧性佳等优点，且该实现显示的显示装置，其不需要背光源，具有反应速度快和显示效果好的特点，受到用户的关注，被广泛应用于智能手机、平板电脑等终端产品中。
受到现有显示面板的膜层结构限制，显示面板在发生落摔时显示区和非显示区的膜层结构容易出现形变不一致从而导致显示面板损坏的问题。
因此，亟需一种新的显示面板及显示装置。
申请内容
本申请实施例提供了一种显示面板及显示装置，通过设置第一支撑部的顶部到基板的距离和第二支撑部的顶部到基板的距离之间的差值小于或等于预设差值，以减小显示面板在显示区和非显示区之间的支撑力差异，增强显示面板屏体强度，保证显示面板在进行落摔强度测试或者在实际使用摔落后显示面板显示区和非显示区的变形量保持一致，降低出现损坏的风险。
第一方面，本申请实施例提供了一种显示面板，具有显示区以及和所述显示区相邻设置的非显示区，所述显示面板包括：基板；像素定义层，设于所述基板一侧，所述像素定义层包括设于所述显示区的第一开口和设于所述非显示区的第二开口；支撑层，所述支撑层包括第一支撑部和第二支撑部，所述第一支撑部设于位于显示区的所述像素定义层背离所述基板一侧，且所述第一支撑部和所述第一开口相邻设置，所述第二支撑部设于位于非显示区的所述像素定义层背离所述基板一侧，且所述第二支撑部和所述第二开口相邻设置，沿所述显示面板的厚度方向，所述第一支撑部背离所述基板一侧的顶部到所述基板的距离与所述第二支撑部背离所述基板一侧的顶部到所述基板的距离之间的差值小于或等于预设差值。
第二方面，本申请实施例提供了一种显示装置，包括：显示面板，所述显示面板为上述任一实施例中所述的显示面板。
与现有技术相比，本申请实施例所提供的显示面板包括基板、像素定义层以及支撑层，在显示区包括相邻设置的第一支撑部和第一开口，在非显示区包括相邻设置的第二支撑部和第二开口，通过设置第一支撑部的顶部到基板的距离和第二支撑部的顶部到基板的距离之间的差值小于或等于预设差值，以减小显示面板在显示区和非显示区之间的支撑力差异，增强显示面板屏体强度，保证显示面板在进行落摔强度测试或者在实际使用摔落后显示面板显示区和非显示区的变形量保持一致，降低出现损坏的风险。
图1是本申请一种实施例提供的显示面板的结构示意图；
图2是图1中B-B处一种实施例提供的膜层结构图；
图3是本申请一种实施例提供的第一支撑部和第二支撑部的排布示意图；
图4是图1中B-B处另一种实施例提供的膜层结构图；
图5是图1中B-B处又一种实施例提供的膜层结构图。
落摔强度测试为显示面板要求之一，由于显示面板的结构限制，会仅在显示区设置支撑部，而在非显示区不设置支撑部，或者，显示区设置的支撑部会高于非显示区设置的支撑部，在对采用Frit(玻璃胶)的硬屏显示面板进行落摔强度测试时，显示面板会因为显示区和非显示区的支撑部高度差异而出现支撑力大小差异，进而导致显示面板在落摔后显示区和非显示区的变形量具有差异，导致显示面板的非显示区更容易摔坏，影响显示面板屏体强度的均一性。
为了解决上述问题，本申请实施例所提供的显示面板通过设置第一支撑部的顶部到基板的距离和第二支撑部的顶部到基板的距离之间的差值小于或等于预设差值，以减小显示面板在显示区和非显示区之间的支撑力差异，降低出现损坏的风险。
本申请实施例提供了一种显示面板及显示装置，以下将结合附图1至图5对显示面板及显示装置的各实施例进行说明。
请参阅图1至图3，本申请实施例提供了一种显示面板，具有显示区AA以及和显示区AA相邻设置的非显示区NA，显示面板包括：基板1；像素定义层2，设于基板1一侧，像素定义层2包括设于显示区AA的第一开口K1和设于非显示区NA的第二开口K2；支撑层3，支撑层3包括第一支撑部31和第二支撑部32，第一支撑部31设于位于显示区AA的像素定义层2背离基板1一侧，且第一支撑部31和第一开口K1相邻设置，第二支撑部32设于位于非显示区NA的像素定义层2背离基板1一侧，且第二支撑部32和第二开口K2相邻设置，沿显示面板的厚度方向，第一支撑部31背离基板1一侧的顶部到基板1的距离与第二支撑部32背离基板1一侧的顶部到基板1的距离之间的差值小于或等于预设差值。
本申请实施例所提供的显示面板包括基板1、像素定义层2以及支撑层3，在显示区AA包括相邻设置的第一支撑部31和第一开口K1，在非显示区NA包括相邻设置的第二支撑部32和第二开口K2，通过设置第一支撑部31的顶部到基板的距离和第二支撑部32的顶部到基板的距离之间的差值小于或等于预设差值，以减小显示面板在显示区AA和非显示区NA之间的支撑力差异，增强显示面板屏体强度，保证显示面板在进行落摔强
度测试或者在实际使用摔落后显示面板显示区AA和非显示区NA的变形量保持一致，降低出现损坏的风险。
经由发明人研究发现，通过在像素定义层2设置开口能够影响第一支撑部31和/或第二支撑部32的高度。具体的，在现有技术中，像素定义层2在非显示区NA通常是不设置开口的，由于在制备支撑层3时，在固化或者烘烤前，支撑层3具有一定的流动性，形成于像素定义层2上的第二支撑部32会因流动而导致高度下降。因而，本实施例通过在非显示区NA的像素定义层2设置第二开口K2，以限制第二支撑部32的流动范围，进而保证第二支撑部32背离基板1一侧的顶部到基板1的距离即第二高度能够和第一支撑部31背离基板1一侧的顶部到基板1的距离即第一高度之间的差值保持在预设差值的范围内。
需要说明的是，沿显示面板的厚度方向，位于显示区AA的像素定义层2的厚度和位于非显示区NA的像素定义层2的厚度可以相等也可以不等，用户可以通过调整第一支撑部31和第二支撑部32的高度，即第一支撑部31的顶部到像素定义层2的高度以及第二支撑部32到像素定义层2的高度来调整第一支撑部31的顶部到基板1的距离与第二支撑部32的顶部到基板1的距离之间的差值。可选的，由于位于显示区AA的像素定义层2和位于非显示区NA的像素定义层2通常通过同一道工艺成型，因而，位于显示区AA的像素定义层2的厚度和位于非显示区NA的像素定义层2的厚度通常也相等。
如图2所示，在位于显示区AA的像素定义层2的厚度和位于非显示区NA的像素定义层2的厚度相等时，第一支撑部31自身的高度为a，第二支撑部32自身的高度b，a和b之间差值的绝对值即预设差值，预设差值的具体数值可以根据第一支撑部31的高度选择。例如，可以使预设差值小于或者等于第一支撑部31的高度的10％，以保证第一支撑部31和第二支撑部32之间的高度差异不会过大，提高显示面板显示区AA和非显示区NA的屏体强度的均一性。
在本实施例中，支撑层3和像素定义层2可以采用相同的材料制成，以降低生产成本。可选的，支撑层3和像素定义层2的材料包括有机树脂
材料。例如，支撑层3和像素定义层2的材质可以为六甲基二甲硅醚、环氧树脂或者聚酰亚胺(Polyimide，PI)等材料。
像素定义层2的第一开口K1和第二开口K2可以通过同一工艺一同成型，以降低生产成本。例如，可以采用光刻工艺或者激光刻蚀等方式实现像素定义层2的图案化处理，以形成第一开口K1和第二开口K2。而支撑层3的第一支撑部31和第二支撑部32也可以通过同一工艺一同成型，在降低成本的同时，也能够使第一支撑部31和第二支撑部32处于相同的制备环境，更加有利于实现第一支撑部31和第二支撑部32的高度相同。具体的，第一支撑部31和第二支撑部32也可以通过光刻工艺或者激光刻蚀等方式形成，例如第一支撑部31和第二支撑部32可以通过同一掩膜板蒸镀形成，并无特殊限定。
可选的，非显示区NA包括隔断区BA以及封装区FA，第二支撑部32设于隔断区BA，在封装区FA设有封装胶，封装胶设于第二支撑部32背离显示区AA一侧，以实现显示面板边框部分的封装，封装胶具体可以采用Frit(玻璃胶)等材料制成。
可选的，在由显示区AA指向非显示区NA的方向上，设有至少两行第二支撑部32，以保证第二支撑部32具有足够的支撑力。
在一些可选的实施例中，沿显示面板的厚度方向，第一支撑部31和第二支撑部32之间的高度比值范围为0.9～1.1。可以理解的是，第一支撑部31和第二支撑部32的高度具体是指沿显示面板的厚度方向，第一支撑部31的顶部到像素定义层2的距离以及第二支撑部32的顶部到像素定义层2的距离，第一支撑部31和第二支撑部32之间的高度差越小，则第一支撑部31和第二支撑部32所对应的支撑力差异也就越小，考虑到工艺误差以及第一支撑部31和第二支撑部32流动性等因素的影响，第一支撑部31和第二支撑部32之间的高度比值范围为0.9～1.1。例如，第一支撑部31的高度为20μm时，第二支撑部32的高度范围为18μm～22μm。可选的，第一支撑部31的高度和第二支撑部32的高度相等，即第一支撑部31的高度为20μm时，第二支撑部32的高度也可以为20μm。当然，上述第一支撑部31和第二支撑部32的具体高度数值仅为示意第一支撑部31和第二支
撑部32之间的高度关系，并不代表第一支撑部31和第二支撑部32的实际高度。
可选的，为了便于使第一支撑部31的顶部到基板1的距离等于第二支撑部32的顶部到基板1的距离，可以使位于显示区AA的像素定义层2的厚度和位于非显示区NA的像素定义层2的厚度相等，通过同一道工艺一次成型位于显示区AA的像素定义层2和位于非显示区NA的像素定义层2，在制备时只需控制调整第一支撑部31和第二支撑部32的高度即可实现第一支撑部31的顶部到基板1的距离等于第二支撑部32的顶部到基板1的距离，降低了工艺难度。
请参阅图2，在一些可选的实施例中，像素定义层2包括用于承载第一支撑部31的第一像素定义部21和用于承载第二支撑部32的第二像素定义部22，相邻两个第一像素定义部21之间的距离和相邻两个第二像素定义部22之间的距离的比值范围为0.9～1.1。
可以理解的是，由于第一支撑部31和第二支撑部32分别设于第一像素定义部21和第二像素定义部22上。因而，相邻两个第一像素定义部21之间的距离以及相邻两个第二像素定义部22之间的距离会影响对应的第一支撑部31和第二支撑部32的设置密度以及对应的第一开口K1和第二开口K2的具体尺寸。而第一支撑部31和第二支撑部32的设置密度以及对应的第一开口K1和第二开口K2的具体尺寸两者均会影响第一支撑部31、第二支撑部32在进行落摔强度测试或者在实际使用摔落后显示面板显示区AA和非显示区NA的变形量，因而本实施例可以通过限制相邻两个第一像素定义部21之间的距离和相邻两个第二像素定义部22之间的距离的比值范围为0.9～1.1，以减低显示面板显示区AA的第一像素定义部21和非显示区NA的第二像素定义部22的设置差异。
可选的，相邻两个第一像素定义部21之间的距离和相邻两个第二像素定义部22之间的距离相等，以使第一像素定义部21和第二像素定义部22分别为第一支撑部31和第二支撑部32提供相同的支撑效果。可选的，相邻两个第一像素定义部21之间的距离范围为10μm～50μm，相邻两个第二像素定义部22之间的距离范围也为10μm～50μm。
在一些可选的实施例中，沿显示面板的厚度方向上，第一像素定义部21在基板1上的投影面积和第二像素定义部22在基板1上的投影面积之间的比值范围为0.9～1.1。
经由发明人实验测得，第一像素定义部21、第二像素定义部22的尺寸大小会影响第一支撑部31和第二支撑部32的流动，进而影响第一支撑部31和第二支撑部32的高度。具体的，第一像素定义部21越大，相应的，在相邻两个第一像素定义部21之间的距离固定时，第一开口K1也就越小，最终所形成的第一支撑部31的高度也就越矮。同理，第二像素定义部22越大，相应的，在相邻两个第二像素定义部22之间的距离固定时，第二开口K2也就越小，最终所形成的第二支撑部32的高度也就越矮，因而，本实施例通过限制第一像素定义部21在基板1上的投影面积和第二像素定义部22在基板1上的投影面积能够对应限制第一支撑部31和第二支撑部32的流动效果，进而使得第一支撑部31和第二支撑部32之间的高度差能符合要求。
可选的，第一像素定义部21在基板1上的投影面积等于第二像素定义部22在基板1上的投影面积。可以理解的是，第一像素定义部21在基板1上的投影面积以及第二像素定义部22在基板1上的投影面积之间的相对关系对应于第一支撑部31和第二支撑部32之间的高度关系。因而，在第一像素定义部21和第二像素定义部22的投影面积相等时，能够更加便于实现第一支撑部31和第二支撑部32之间的高度相等的要求。
为了进一步限制第二支撑部32的流动，避免出现第二支撑部32相对于第一支撑部31过矮的问题，在一些可选的实施例中，第二支撑部32到与第二支撑部32对应的第二像素定义部22的边缘的最小距离为0μm～5μm。
在本实施例中，经由发明人实验测得，在第二支撑部32到与第二支撑部32对应的第二像素定义部22的边缘的最小距离越大时，第二支撑部32因流动所产生的形变也就越大，其高度也随之变矮。因而，需要限制第二支撑部32到与第二支撑部32对应的第二像素定义部22的边缘的最小距离不宜过大。同时，还需避免第二支撑部32直接流动至第二开口K2内，可
选的，第二支撑部32到与第二支撑部32对应的第二像素定义部22的边缘的最小距离为5μm。
请参阅图3，在一些可选的实施例中，第一支撑部31在显示区AA的排布形式和第二支撑部32在非显示区NA的排布形式相同。
需要说明的是，本实施例中的排布形式包括且并不限于第一支撑部31或第二支撑部32的设置位置、具体形状、尺寸等因素，在第一支撑部31和第二支撑部32的排布形式相同时，一方面便于制备形成高度相同的第一支撑部31和第二支撑部32。另一方面，也能使第一支撑部31和第二支撑部32提供相同的支撑力，增强显示面板屏体强度，保证显示面板在进行落摔强度测试或者在实际使用摔落后显示面板显示区AA和非显示区NA的变形量保持一致，降低出现损坏的风险。
可选的，第一开口K1在显示区AA的排布形式和第二开口K2在非显示区NA的排布形式相同，以进一步提高显示面板在显示区AA和非显示区NA结构的一致性，同时保证第一开口K1和第二开口K2分别对于第一支撑部31和第二支撑部32具有相同的阻挡效果，第二支撑部32的高度能够和第一支撑部31的高度差保持在预设差值的范围内。
请参阅图4，在一些可选的实施例中，考虑到在非显示区NA通常还设有一些信号走线，根据信号走线所传输信号的不同，需要针对性设置像素定义层2。在一些可选的实施例中，显示面板还包括信号线层7，信号线层7位于非显示区NA，且信号线层7位于像素定义层2和基板1之间，信号线层7包括低电平电压信号线71，第二开口K2暴露至少部分低电平电压信号线71。
需要说明的是，由于低电平电压信号线71即VSS信号线通常是和阴极层4连接，为阴极层4提供低电平电压信号，且由于阴极层4为整面蒸镀，在显示区AA和非显示区NA均设有阴极层4，因而，本实施例通过将第二开口K2暴露至少部分低电平电压信号线71，便于低电平电压信号线71和阴极层4连接。
具体的，显示面板还包括阴极层4，阴极层4覆盖于像素定义层2背离基板1一侧且部分位于第一开口K1和第二开口K2内，低电平电压信号线
71和阴极层4电连接。
可选的，在显示区AA还包括沿显示面板的厚度方向层叠设置的阳极层6、发光层5，阴极层4至少部分覆盖于发光层5背离基板1一侧，低电平电压信号线71可以和阳极层6同层设置，即低电平电压信号线71和阳极层6可以通过同一工艺成型，采用相同的材料，以降低生产成本。
请参阅图5，可选的，信号线层7包括高电平电压信号线72，由于高电平电压信号线72并不和阴极层4连接，两者的信号不同，因而需要通过像素定义层2将高电平电压信号线72和阴极层4相隔开，即第二开口K2不会暴露高电平电压信号线72，以避免出现短路、信号串扰等问题。
在本实施例中，阴极层4材料一般采用功函数较低的材料，以便电子注入，另外还可以减少工作中产生的热量，延长OLED器件的使用寿命。阴极层4的材料可以为银(Ag)、铝(Al)、锂(Li)、镁(Mg)、镱(Yb)、钙(Ca)或铟(In)等金属材料的一种，还可以为前述金属材料的合金，如镁银合金(Mg/Ag)、锂铝合金(Li/Al)等，对此，本实施例不作限制。
阳极层6的材料一般为功函数高的材料，以便提高空穴注入效率，阳极层6和信号线层7的材料可为金(Au)、铂(Pt)、钛(Ti)、银(Ag)、氧化铟锡(ITO)、氧化锌锡(IZO)或透明导电聚合物(如聚苯胺)等。
本申请还提供了一种显示装置，包括：显示面板；显示面板为上述任一实施例中的显示面板。
因此，本申请实施例提供的显示装置具有上述任一实施例中显示面板的技术方案所具有的技术效果，与上述实施例相同或相应的结构以及术语的解释在此不再赘述。
本申请实施例提供的显示装置可以应用于手机，也可以为任何具有显示功能的电子产品，包括但不限于以下类别：电视机、笔记本电脑、桌上型显示器、平板电脑、数码相机、智能手环、智能眼镜、车载显示器、医疗设备、工控设备、触摸交互终端等，本申请实施例对此不作特殊限定。
Claims (15)
- 一种显示面板，具有显示区以及和所述显示区相邻设置的非显示区，所述显示面板包括：基板；像素定义层，设于所述基板一侧，所述像素定义层包括设于所述显示区的第一开口和设于所述非显示区的第二开口；支撑层，所述支撑层包括第一支撑部和第二支撑部，所述第一支撑部设于位于显示区的所述像素定义层背离所述基板一侧，且所述第一支撑部和所述第一开口相邻设置，所述第二支撑部设于位于非显示区的所述像素定义层背离所述基板一侧，且所述第二支撑部和所述第二开口相邻设置；沿所述显示面板的厚度方向，所述第一支撑部背离所述基板一侧的顶部到所述基板的距离和所述第二支撑部背离所述基板一侧的顶部到所述基板的距离之间的差值小于或等于预设差值。
- 根据权利要求1所述的显示面板，其中，沿所述显示面板的厚度方向，所述第一支撑部和所述第二支撑部的高度比值范围为0.9～1.1。
- 根据权利要求2所述的显示面板，其中，所述第一支撑部的高度和所述第二支撑部的高度相等。
- 根据权利要求1所述的显示面板，其中，沿所述显示面板的厚度方向，位于所述显示区的所述像素定义层的厚度和位于所述非显示区的所述像素定义层的厚度相等。
- 根据权利要求1所述的显示面板，其中，所述像素定义层包括用于承载所述第一支撑部的第一像素定义部和用于承载所述第二支撑部的第二像素定义部，相邻两个所述第一像素定义部之间的距离和相邻两个所述第二像素定义部之间的距离的比值范围为0.9～1.1。
- 根据权利要求5所述的显示面板，其中，相邻两个所述第一像素定义部之间的距离和相邻两个所述第二像素定义部之间的距离相等。
- 根据权利要求5所述的显示面板，其中，沿所述显示面板的厚度方向，所述第一像素定义部在所述基板上的投影面积和所述第二像素定义部 在所述基板上的投影面积之间的比值范围为0.9～1.1。
- 根据权利要求7所述的显示面板，其中，所述第一像素定义部在所述基板上的投影面积等于所述第二像素定义部在所述基板上的投影面积。
- 根据权利要求5所述的显示面板，其中，所述第二支撑部到与所述第二支撑部对应的所述第二像素定义部的边缘的最小距离为0μm～5μm。
- 根据权利要求1所述的显示面板，其中，所述第一支撑部在所述显示区的排布形式和所述第二支撑部在所述非显示区的排布形式相同。
- 根据权利要求1所述的显示面板，其中，还包括信号线层，所述信号线层位于所述非显示区，且所述信号线层位于所述像素定义层和所述基板之间，所述信号线层包括低电平电压信号线，所述第二开口暴露至少部分所述低电平电压信号线。
- 根据权利要求11所述的显示面板，其中，还包括阴极层，所述阴极层覆盖于所述像素定义层背离所述基板一侧且部分所述阴极层位于所述第一开口和所述第二开口内，所述低电平电压信号线和所述阴极层电连接。
- 根据权利要求1所述的显示面板，其中，所述支撑层和所述像素定义层的材料相同。
- 根据权利要求13所述的显示面板，其中，所述支撑层和所述像素定义层的材料包括有机树脂材料。
- 一种显示装置，包括：显示面板，所述显示面板为权利要求1至14任一项所述的显示面板。
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| KR20150092792A (ko) * | 2014-02-05 | 2015-08-17 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 제조 방법 |
| CN109713023A (zh) * | 2019-01-29 | 2019-05-03 | 昆山国显光电有限公司 | 显示面板、显示装置及显示面板的制备方法 |
| CN109830521A (zh) * | 2019-03-29 | 2019-05-31 | 武汉天马微电子有限公司 | 有机发光显示面板和显示装置 |
| KR20200036291A (ko) * | 2018-09-28 | 2020-04-07 | 엘지디스플레이 주식회사 | 전계 발광 표시장치 |
| CN111415970A (zh) * | 2020-04-27 | 2020-07-14 | 武汉华星光电半导体显示技术有限公司 | Oled显示面板 |
| CN115581091A (zh) * | 2022-10-19 | 2023-01-06 | 昆山国显光电有限公司 | 显示面板及显示装置 |
-
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- 2022-10-19 CN CN202211281649.6A patent/CN115581091A/zh active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150092792A (ko) * | 2014-02-05 | 2015-08-17 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 제조 방법 |
| KR20200036291A (ko) * | 2018-09-28 | 2020-04-07 | 엘지디스플레이 주식회사 | 전계 발광 표시장치 |
| CN109713023A (zh) * | 2019-01-29 | 2019-05-03 | 昆山国显光电有限公司 | 显示面板、显示装置及显示面板的制备方法 |
| CN109830521A (zh) * | 2019-03-29 | 2019-05-31 | 武汉天马微电子有限公司 | 有机发光显示面板和显示装置 |
| CN111415970A (zh) * | 2020-04-27 | 2020-07-14 | 武汉华星光电半导体显示技术有限公司 | Oled显示面板 |
| CN115581091A (zh) * | 2022-10-19 | 2023-01-06 | 昆山国显光电有限公司 | 显示面板及显示装置 |
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