Display panel and display device

Abstract

A display panel and a display device. The display panel comprises a display area (100) and a non-display area (200) located at the periphery of the display area (100). In the non-display area (200), the side of a packaging substrate (4) or the side of a base substrate (1) close to a liquid crystal layer (34) is provided with a support portion (37), such that the vertical space coated by a frame sealing adhesive (5) is lowered, and on the premise of the same adhesive discharged amount, a greater adhesive width of the frame sealing adhesive (5) can be achieved, or when the adhesive width of the frame sealing adhesive (5) is identical, the adhesive consumption of the frame sealing adhesive (5) can be greatly reduced, so that the cell gap on the periphery of the medium and large-sized display panel can be ensured, and the image quality of a display picture is not affected. In addition, for a tiled display screen, the cell gap around same can be ensured to be consistent, ensuring the display quality of the tiled display screen.

Description

Display panel and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the production of liquid crystal display panels, liquid crystal and frame-sealing adhesive need to be dripped onto a base substrate or a color filter substrate, and then the base substrate and the color filter substrate need to be assembled, and then the frame-sealing adhesive needs to be cured.

[0003] Currently, the space for frame sealing glue in the height direction is large, and a large amount of glue is required. However, due to the limitation of the glue dispensing amount of the glue coating equipment, it is difficult to ensure the box thickness around medium and large-sized LCD panels, affecting the image quality of the display.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0005] Summary of the Invention

[0006] The present disclosure provides a display panel and a display device.

[0007] According to one aspect of the present disclosure, a display panel is provided, which has a display area and a non-display area located outside the display area. The display panel also includes a base substrate, a liquid crystal layer, a packaging substrate, a support portion and a frame-sealing glue. The liquid crystal layer is arranged on one side of the base substrate and is located in the display area; the packaging substrate is arranged on a side of the liquid crystal layer away from the base substrate; the support portion is arranged on the packaging substrate or on a side of the base substrate close to the liquid crystal layer, and the support portion is located in the non-display area; when the support portion is arranged on a side of the packaging substrate close to the liquid crystal layer, the frame-sealing glue is arranged between the support portion and the base substrate; when the support portion is arranged on a side of the base substrate close to the liquid crystal layer, the frame-sealing glue is arranged between the support portion and the base substrate.

[0008] In one embodiment of the present disclosure, the orthographic projection of the frame sealing adhesive on the base substrate is located within the orthographic projection of the support portion on the base substrate.

[0009] In one embodiment of the present disclosure, the display panel further includes a black matrix and a filter portion located between the base substrate and the packaging substrate, the filter portion includes filter units of at least three different colors, the portion of the black matrix located in the display area is provided with a plurality of openings, and the orthographic projection of the filter unit on the packaging substrate is located within the opening.

[0010] In one embodiment of the present disclosure, the non-display area includes a virtual pixel area and a border area arranged in sequence away from the display area, the filter part is arranged in the display area and the virtual pixel area, the support part is arranged in the border area, and the frame sealing glue on at least part of the edge of the display panel is spaced apart from the filter part.

[0011] In one embodiment of the present disclosure, the display panel is polygonal, and the frame sealant on at least one side of the display panel is disposed on the light filtering portion.

[0012] In one embodiment of the present disclosure, the supporting portion includes at least three sub-supporting portions of different colors, the orthographic projections of the sub-supporting portions of different colors on the base substrate at least partially do not overlap, the sub-supporting portions of the same color are arranged in the same layer and material as the sub-filtering units of the same color, and the thicknesses of at least three sub-supporting portions of different colors are equal.

[0013] In one embodiment of the present disclosure, the support portion and the filter units of one color in the filter portion are provided in the same layer and made of the same material.

[0014] In one embodiment of the present disclosure, the supporting portion includes sub-supporting portions of at least two colors stacked together, the orthographic projections of the supporting portions of different colors on the base substrate overlap, and the sub-supporting portions of the same color are arranged in the same layer and material as the sub-filtering units of the same color.

[0015] In one embodiment of the present disclosure, the orthographic projection of the filter portion on the packaging substrate covers the display area, and the orthographic projection of the support portion on the base substrate covers the frame area.

[0016] In one embodiment of the present disclosure, a ratio of the thickness of the frame sealant to the thickness of the liquid crystal layer is less than 1.

[0017] In one embodiment of the present disclosure, the display panel also includes an organic film, which is arranged on the side of the base substrate close to the liquid crystal layer. The orthographic projection of the organic film on the base substrate does not overlap with the orthographic projection of the frame sealing glue on the base substrate, and the ratio of the thickness of the frame sealing glue to the thickness of the liquid crystal layer is less than 1.

[0018] In one embodiment of the present disclosure, when the thickness of the frame sealant is less than or equal to 1 mm, the frame sealant consists of a glue body; when the thickness of the frame sealant is greater than 1 mm, the frame sealant includes a glue body and a support mixed in the glue body.

[0019] In one embodiment of the present disclosure, a ratio of the thickness of the frame sealant to the thickness of the organic film is less than 2.5.

[0020] In one embodiment of the present disclosure, the black matrix is ​​disposed on a side of the packaging substrate close to the base substrate, and the filter portion is disposed on a side of the packaging substrate close to the base substrate.

[0021] In one embodiment of the present disclosure, the black matrix and the filter portion are both disposed on a side of the package substrate close to the base substrate.

[0022] In one embodiment of the present disclosure, the display panel further includes a columnar spacer portion, which is provided on a side of the filter portion and the black matrix away from the packaging substrate, and the support portion and the columnar spacer portion are provided in the same layer and material.

[0023] In one embodiment of the present disclosure, the thickness of the supporting portion is greater than or equal to the thickness of the filter unit of any color.

[0024] In one embodiment of the present disclosure, the display panel also includes a columnar spacer portion, which is arranged on the side of the filter portion and the black matrix away from the packaging substrate. The support portion includes a first sub-support portion and a second sub-support portion. The first sub-support portion is arranged in the same layer and material as a filter unit of one color in the filter portion, and the second sub-support portion is arranged in the same layer and material as the columnar spacer portion.

[0025] In one embodiment of the present disclosure, the first sub-support portion is provided on a side of the base substrate close to the package substrate, and the second sub-support portion is provided on a side of the package substrate close to the base substrate.

[0026] According to another aspect of the present disclosure, a display device is provided, comprising the display panel according to any one aspect of the present disclosure.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] FIG1 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when no planarization layer and no support portion are provided.

[0030] FIG2 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when a planarization layer is provided but no supporting portion is provided.

[0031] FIG3 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when a support portion and a planarization layer are provided.

[0032] FIG4 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when a support portion is provided and a planarization layer is not provided in the frame area.

[0033] FIG5 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure when the supporting portion includes three sub-supporting portions and no planarization layer is provided in the frame area.

[0034] FIG6 is a schematic cross-sectional view of the display panel according to an embodiment of the present disclosure when the frame sealant does not cover the clock signal line.

[0035] FIG7 is a schematic cross-sectional view of the display panel according to the embodiment of the present disclosure when the frame sealant covers the scan signal lines and the clock signal lines.

[0036] FIG8 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure, when the supporting portion includes stacked sub-support portions of two colors.

[0037] FIG9 is a schematic cross-sectional view of the display panel according to an embodiment of the present disclosure when the orthographic projection of the support portion on the base substrate covers the frame area.

[0038] FIG10 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure, when the support portion and the spacer portion are provided in the same layer and made of the same material.

[0039] 11 is a schematic cross-sectional view of a display panel according to an embodiment of the present disclosure, wherein the support portion and the spacer portion are provided in the same layer and the same material, and the support portion includes sub-support portions of two stacked colors.

[0040] FIG12 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure when the filter portion is disposed on a side of the base substrate close to the packaging substrate and the support portion is a single-layer structure.

[0041] 13 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure, when the filter portion is disposed on a side of the base substrate close to the packaging substrate and the support portion has a double-layer structure.

[0042] FIG14 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure, wherein the first sub-support portion is disposed on the packaging substrate and the second sub-support portion is disposed on the base substrate.

[0043] FIG15 is another cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure, when the first sub-support portion is disposed on the packaging substrate and the second sub-support portion is disposed on the base substrate.

[0044] FIG16 is a schematic plan view of a display panel according to an embodiment of the present disclosure when a planarization layer is not provided and a support portion is provided.

[0045] FIG17 is a plan view of a display panel according to an embodiment of the present disclosure when forming a spliced ​​display screen.

[0046] In the figure: 1-base substrate, 2-driving circuit layer, 20-thin film transistor, 21-active layer, 22-gate insulating layer, 23-gate layer, 231-clock signal line, 232-gate, 233-transfer part, 234-scanning signal line, 24-interlayer dielectric layer, 251-data line, 252-source, 253-drain, 26-planarization layer, 3-pixel layer, 31-second conductive layer, 311-pixel electrode, 32-protective layer, 33-third conductive layer, 331-common electrode, 332-reference signal line, 34-liquid crystal layer, 35-black matrix, 351-opening, 36-filter part, 361-first filter unit, 362-second filter Unit, 363-third filter unit, 37-support part, 371-first sub-support part, 373-second sub-support part, 372-third sub-support part, 4-packaging substrate, 5-frame sealing glue, 51-glue body, 52-support, 6-columnar spacer part, 61-main columnar spacer column, 62-sub-columnar spacer column, 7-buffer layer, 100-display area, 200-non-display area, 2001-virtual pixel area, 2002-border area. DETAILED DESCRIPTION

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0048] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0049] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0050] As shown in Figure 1, a liquid crystal display panel includes a color filter substrate, an array substrate, a liquid crystal layer 34, and a sealant 5. The liquid crystal layer 34 and the sealant 5 are sandwiched between the color filter substrate and the array substrate. The liquid crystal layer 34 is located in the display area 100 of the liquid crystal display panel, and the sealant 5 is located in the frame area 2002. The frame area 2002 is located outside the display area 100. During the production of the liquid crystal display panel, liquid crystal and the sealant 5 are dripped onto the array substrate or the color filter substrate, and then the array substrate and the color filter substrate are assembled, and then the sealant 5 is cured. The sealant 5 serves to bond the array substrate and the color filter substrate together and protect the liquid crystal layer between them from external air and water.

[0051] The frame sealant 5 typically includes a glue body 51 and a support 52 mixed in the glue body 51. The support 52 can be a plastic ball. The support 52 is used to support the thickness of the liquid crystal layer around the perimeter to ensure that the thickness of the LCD panel frame area 2002 is consistent with the thickness of the display area 100. The frame sealant 5 is placed between the black matrix 35 on the color filter substrate and the insulating layer on the array substrate. The film layer structure of the frame area 2002 consists of the black matrix 35, the frame sealant 5, and the gate layer. The distance between the black matrix 35 and the gate layer is relatively large, which results in a large amount of frame sealant 5 being required.

[0052] Especially for ultra-large LCD panels (≥85 inches), the width of the frame sealant 5 is required to be greater than or equal to 2.8mm. If the frame sealant 5 is required to fully cover the clock (CLK) signal line of the gate layer (half-covering the clock signal line will cause horizontal stripes), the width of the frame sealant 5 needs to reach more than 4mm, and the amount of frame sealant 5 used will double, which is limited by the glue dispensing capacity of the glue coating equipment and cannot be achieved.

[0053] Furthermore, medium- to large-sized, irregularly shaped displays (such as 23.6-inch round displays) cannot be inspected by glue coating equipment, requiring a wider glue width to prevent glue leaks. This requires a wider sealant (5) to maintain image quality around the LCD screen, requiring a width of 2.0mm. The glue coating equipment has a limited amount of glue to dispense, and the greater the amount, the lower the coating accuracy, posing a risk of glue overflow.

[0054] As shown in FIG2 , some LCD panels with higher display quality requirements are further provided with a planarization layer 26. To meet the anti-peeling characteristics of some LCD panels, the planarization layer 26 is removed from the array substrate where the frame sealant 5 is applied, ensuring that the frame sealant 5 does not contact the planarization layer 26, thereby improving the adhesion of the frame. However, this will increase the height difference at the peripheral position, requiring the frame sealant 5 to use larger supports 52. Generally, the larger the size of the supports 52, the worse the uniformity, which can easily affect the image quality around the display area 100.

[0055] As the response time of display requirements becomes faster and faster, the cell thickness of current liquid crystal display panels has been greatly reduced. The smaller cell thickness means that the thickness of the frame sealant 5 is getting smaller and smaller, so the size of the support 52 also tends to be smaller and smaller. The size of the existing support 52 is difficult to meet the requirements, and the supplier needs to redevelop it to match the size of the support 52 with the height of the cell thickness to ensure the image quality around the display area 100.

[0056] Furthermore, to save mask costs, more and more LCD panels are being spliced ​​together freely. However, the resulting panels suffer from inconsistent perimeter thickness. For example, consider the horizontal splicing of two LCD panels. The left side of one panel is indented, while the right side of the other is indented. The indented edges of the two panels are then spliced ​​together.

[0057] The frame sealant 5 of the retracted splicing edge is moved inward to the position where the filter portion 36 is located, making the thickness of the splicing edge lower than that of the other three edges by the thickness of the filter portion 36. To ensure the support capacity of the LCD panel frame area 2002, when the frame sealant 5 is added with supports 52 according to the peripheral thickness of the other three edges, the LCD panel will be subjected to greater pressure at the splicing edge, resulting in severe yellowing of the other three edges. If the size of the supports 52 is selected based on the thickness of the splicing edge, the other three edges will suffer from peripheral problems due to insufficient support.

[0058] Based on this, an embodiment of the present disclosure provides a display panel. As shown in Figures 3 to 16, the display panel has a display area 100 and a non-display area 200 located outside the display area 100. The display panel also includes a base substrate 1, a liquid crystal layer 34, a packaging substrate 4, a support portion 37, and a frame sealant 5. The liquid crystal layer 34 is provided on one side of the base substrate 1 and is located in the display area 100; the packaging substrate 4 is provided on a side of the liquid crystal layer 34 away from the base substrate 1; the support portion 37 is provided on the side of the packaging substrate 4 or the base substrate 1 close to the liquid crystal layer 34, and the support portion 37 is located in the non-display area 200. When the support portion 37 is provided on the side of the packaging substrate 4 close to the liquid crystal layer 34, the frame sealant 5 is provided between the support portion 37 and the base substrate 1; when the support portion 37 is provided on the side of the packaging substrate 4 close to the liquid crystal layer 34, the frame sealant 5 is provided between the support portion 37 and the base substrate 1. When the support portion 37 is provided on the side of the base substrate 1 close to the liquid crystal layer 34, the frame sealant 5 is provided between the support portion 37 and the packaging substrate 4.

[0059] In the non-display area 200, a support portion 37 is provided on the side of the packaging substrate 4 or the base substrate 1 near the liquid crystal layer 34. When the support portion 37 is provided on the side of the packaging substrate 4 near the liquid crystal layer 34, the frame sealant 5 is provided between the support portion 37 and the base substrate 1. When the support portion 37 is provided on the side of the base substrate 1 near the liquid crystal layer 34, the frame sealant 5 is provided between the support portion 37 and the packaging substrate 4. This reduces the vertical space for applying the frame sealant 5. Under the premise of the same glue discharge amount, a wider glue width of the frame sealant 5 can be achieved. Alternatively, under the condition of the same glue width, the amount of glue used can be greatly reduced, which can ensure the box thickness around medium and large-sized liquid crystal display panels without affecting the image quality of the display.

[0060] The display panel involved in the embodiments of the present disclosure will be described in detail below with reference to specific embodiments.

[0061] As shown in Figure 3, the display panel may include a base substrate 1, a driving circuit layer 2, a pixel layer 3 and a packaging substrate 4 stacked in sequence, a buffer layer 7 is provided on one side of the base substrate 1, a driving circuit layer 2 is provided on the side of the buffer layer 7 away from the base substrate 1, the pixel layer 3 is provided on the side of the driving circuit layer 2 away from the base substrate 1, and the packaging substrate 4 is provided on the side of the pixel layer 3 away from the base substrate 1.

[0062] The base substrate 1 may be an inorganic material or an organic material. For example, in one embodiment of the present disclosure, the base substrate 1 may be made of a glass material such as soda-lime glass, quartz glass, or sapphire glass, or may be made of a metal material such as stainless steel, aluminum, or nickel.

[0063] In another embodiment of the present disclosure, the material of the base substrate 1 can be polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyethersulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), polyethylene terephthalate (PEmm), polyethylene naphthalate (PEN), or a combination thereof.

[0064] In another embodiment of the present disclosure, the substrate 1 may be a flexible substrate 1. For example, the substrate 1 may be made of polyimide (PI). The substrate 1 may also be a composite of multiple layers. For example, in one embodiment of the present disclosure, the substrate 1 may include a base film layer, a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer stacked in sequence.

[0065] The driving circuit layer 2 includes a driving transistor, which can be a thin film transistor 20. The thin film transistor 20 can be selected from a top-gate thin film transistor, a bottom-gate thin film transistor, or a dual-gate thin film transistor. The material of the active layer 21 can be amorphous silicon semiconductor material, low-temperature polysilicon semiconductor material, metal oxide semiconductor material, organic semiconductor material, or other types of semiconductor materials; the thin film transistor 20 can be an N-type thin film transistor or a P-type thin film transistor.

[0066] The driving transistor may have a first terminal, a second terminal, and a control terminal. One of the first terminal and the second terminal may be the source 252 of the driving transistor, and the other may be the drain 253 of the driving transistor. The control terminal may be the gate 232 of the driving transistor. It is understood that the source 252 and the drain 253 of the driving transistor are two relative and interchangeable concepts. When the operating state of the driving transistor changes, for example, when the current direction changes, the source 252 and the drain 253 of the driving transistor may be interchangeable.

[0067] In the present disclosure, the driving circuit layer 2 may include a transistor layer and a first conductive layer 25 sequentially stacked on the base substrate 1. The transistor layer includes an active portion 210 and a gate 232 of the transistor. Optionally, the transistor layer may include a gate layer 23, a gate insulating layer 22, and an active layer 21 stacked between the base substrate 1 and the interlayer dielectric layer 24.

[0068] The positional relationship of each film layer can be determined according to the film layer structure of the thin film transistor 20. In the present disclosure, the driving circuit layer 2 may include a gate layer 23, a gate insulating layer 22, an active layer 21, and a first conductive layer 25 sequentially stacked on the base substrate 1. The thin film transistor 20 formed in this way is a bottom-gate thin film transistor.

[0069] The gate layer 23 can be used to form the gate, gate drive lines, and clock signal lines 231. The active layer 21 includes a channel region and source and drain regions located on both sides of the channel region. The channel region can maintain semiconductor properties, while the semiconductor material in the source and drain regions is partially or fully conductive. It can also be used to form the gate 232 of the transistor and can also be used to form part or all of the electrode plates of the storage capacitor. The first conductive layer 25 can be used to form data lines 251, power lines, and other lines.

[0070] In the display area 100, the gate layer 23 may include a gate electrode 232. A gate insulating layer 22 is disposed on the side of the gate 232 away from the base substrate 1. The active layer 21 is disposed on the side of the gate insulating layer 22 away from the base substrate 1. The first conductive layer may include a source electrode 252 and a drain electrode 253. The source electrode 252 and the drain electrode 253 may be formed directly on the side of the active layer 21 away from the base substrate 1. The source electrode 252 overlaps the source region of the active layer 21, and the drain electrode 253 overlaps the drain region of the active layer 21. In the non-display area 200, the gate layer 23 includes scan signal lines 234 and a plurality of spaced-apart clock signal lines 231 arranged sequentially in a direction away from the display area 100. The gate insulating layer 22 may extend from the display area 100 to the side of the clock signal lines 231 away from the base substrate 1.

[0071] The driving circuit layer 2 may further include an interlayer dielectric layer 24 and a planarization layer 26. The interlayer dielectric layer 24 covers the source electrode 252, the drain electrode 253, and the side of the gate insulation layer 2222 facing away from the base substrate 1. The orthographic projection of the interlayer dielectric layer 24 on the base substrate 1 covers the display area 100 and the non-display area 200. The planarization layer 26 may be provided on the side of the interlayer dielectric layer 24 facing away from the base substrate 1. The orthographic projection of the planarization layer 26 on the base substrate 1 only covers the display area 100 and the non-display area 200. The surface of the planarization layer 26 facing away from the base substrate 1 is planar. Depending on the situation, the planarization layer 26 may be provided as a single layer or multiple layers.

[0072] The display panel also includes a pixel layer 3, which is disposed on the side of the drive circuit layer 2 away from the base substrate 1. The pixel layer 3 may include a second conductive layer 31, a protective layer 32, a third conductive layer 33, and a liquid crystal layer 34. The second conductive layer 31 is disposed on the side of the planarization layer 26 away from the base substrate 1. The second conductive layer 31 may include a pixel electrode 311, which is connected to the source electrode 252 via a via. The protective layer 32 covers the pixel electrode 311 and the planarization layer 26. A protective layer 32 is disposed on the side of the second conductive layer 31 away from the base substrate 1. The protective layer 32 covers the second conductive layer 31 and the planarization layer 26. A third conductive layer 33 is disposed on the side of the protective layer 32 away from the base substrate 1. The third conductive layer 33 may include a common electrode 331. A liquid crystal layer 34 is disposed on the side of the third conductive layer 33 away from the base substrate 1. The liquid crystal layer 34 typically includes alignment layers (not shown in FIG. 3 ) and liquid crystal spaced apart from each other, with the liquid crystal filling the space between the alignment layers. The third conductive layer 33 may further include a reference signal line 332 , and the reference signal line 332 is connected to the transfer portion 233 provided on the gate layer 23 through a via hole.

[0073] The pixel electrode 311 and the common electrode 331 both have driving surfaces, so the liquid crystal layer 34 can be considered to be located between the pixel electrode 311 and the common electrode 331. The pixel electrode 311, the corresponding portions of the liquid crystal layer 34, and the corresponding portions of the common electrode 331 form a sub-pixel 301. A switching signal is input to the gate of the thin-film transistor 20, and the active portion 210 of the thin-film transistor 20 is conductive. A data signal can flow from the source 252 of the thin-film transistor 20 through the channel region of the active portion 210 to the drain 253 of the thin-film transistor 20, and then from the drain 253 of the thin-film transistor 20 to the pixel electrode 311. The common electrode 331 inputs a reference signal, and a voltage difference is formed between the common electrode 331 and the pixel electrode 311, causing the pixel electrode 311 and the common electrode 331 to form an electric field for driving the liquid crystal molecules to rotate. This electric field changes the transmittance of the liquid crystal molecules, thereby displaying different images.

[0074] As shown in FIG4 , the non-display area 200 includes a dummy pixel area 2001 and a border area 2002, which are sequentially arranged in a direction away from the display area 100. To improve the peeling resistance between layers of the display panel, the orthographic projection of the planarization layer 26 on the base substrate 1 only covers the display area 100 and the dummy pixel area 2001. The portion of the planarization layer 26 located in the border area 2002 is removed, and the interlayer dielectric layer 24 is not covered by the planarization layer 26. The protective layer 32 covers the pixel electrode 311, the planarization layer 26, and the interlayer dielectric layer 24 in the border area 2002.

[0075] A packaging substrate 4 is provided on the side of the liquid crystal layer 34 away from the base substrate 1, and a black matrix 35 is provided on the side of the packaging substrate 4 close to the base substrate 1. The black matrix 35 is provided on the side of the packaging substrate 4 close to the base substrate 1. The orthographic projection of the black matrix 35 on the packaging substrate 4 covers the display area 100 and the non-display area 200. A plurality of openings 351 are provided in the portion of the black matrix 35 located in the display area 100 and the virtual pixel area 2001.

[0076] The filter unit 36 ​​includes a first filter unit 361, a second filter unit 362, and a third filter unit 363. The first filter unit 361, the second filter unit 362, and the third filter unit 363 are respectively disposed within the plurality of openings 351. The first filter unit 361 is red, the second filter unit 362 is green, and the third filter unit 363 is blue. The filter unit 36 ​​is disposed on a side of the package substrate 4 close to the base substrate 1.

[0077] As shown in FIG4 , a support portion 37 is provided on the side of the black matrix 35 in the border region 2002 facing away from the package substrate 4. The support portion 37 is provided on the same layer and material as the filter units of one color in the filter unit 36. The support portion 37 can be provided on the same layer and material as the third filter unit 363. The support portion 37 can also be provided on the same layer and material as the second filter unit 362 or the first filter unit 361, without specific limitation. It should be noted that the support portion 37 can be provided parallel to the edge of the package substrate 4.

[0078] As shown in Figure 5, the supporting portion 37 includes three sub-support portions of different colors. The three sub-support portions of different colors may include a first sub-support portion 371, a second sub-support portion 373 and a third sub-support portion 372. The orthographic projections of the first sub-support portion 371, the second sub-support portion 373 and the third sub-support portion 372 on the substrate do not overlap with each other. The sub-support portions of the same color are arranged in the same layer and material as the sub-filtering units of the same color, and the thicknesses of at least three sub-support portions of different colors are equal.

[0079] Frame sealant 5 is provided between support portion 37 and protective layer 32. The orthographic projection of frame sealant 5 on base substrate 1 is located within the orthographic projection of support portion 37 on base substrate 1. Support portion 37 reduces the vertical space required for applying frame sealant 5. This allows for a wider width of frame sealant 5 while maintaining the same adhesive delivery volume. Alternatively, for a constant width of frame sealant 5, the amount of sealant used can be significantly reduced, ensuring a stable cell thickness around medium- to large-sized LCD panels without compromising display quality.

[0080] On the side of the base substrate 1, the frame sealant 5 must either not cover the clock signal line 231 or fully cover the clock signal line 231. Partially covering the clock signal line will cause coupling, resulting in horizontal stripes on the display screen. As shown in Figure 6, when the frame sealant 5 does not cover the clock signal line 231, the frame sealant 5 only covers the scan signal line 234 closest to the display area 100. As shown in Figure 7, when the frame sealant 5 covers the clock signal line 231, the frame sealant 5 covers the scan signal line 234 and all of the clock signal lines 231.

[0081] Whether the frame sealant 5 covers all the clock signal lines 231 depends on the width of the frame sealant 5 and the distance between the frame sealant 5 and the clock signal lines 231. For small and medium-sized display panels, the width of the frame sealant 5 is only about 1 mm, and the distance between the frame sealant 5 and the clock signal lines 231 is relatively far, so the frame sealant 5 may not cover the clock signal lines 231.

[0082] The support portion 37 can include three sub-support portions, with sub-support portions of different colors arranged adjacent to each other, and their orthographic projections on the base substrate 1 not overlapping. Sub-support portions of the same color are arranged in the same layer and material as the sub-filter units of the same color. When the thickness of the first filter unit 361, the thickness of the second filter unit 362, and the thickness of the third filter unit 363 are consistent, the support portion 37 can be used as the base of the frame sealant 5.

[0083] When the thicknesses of the first filter unit 361, the second filter unit 362, and the third filter unit 363 are inconsistent, for example, in order to improve the transmittance of the filter portion 36, the thickness of the second filter unit 362 is smaller than the thicknesses of the first filter unit 361 and the third filter unit 363, this will cause the surface of the support portion 37 to be relatively uneven, thereby resulting in uneven support force provided by the frame sealant 5. To ensure the flatness of the support portion 37, the support portion 37 is usually provided on the same layer and with the same material as the filter units of one color in the filter portion 36.

[0084] As shown in FIG8 , in order to adjust the height of the frame sealant 5, the thickness of the support portion 37 can be increased. The support portion 37 can include two stacked sub-support portions of different colors, with the orthographic projections of the support portions of different colors overlapping on the base substrate 1. The sub-support portions of the same color are arranged in the same layer and material as the sub-filter units of the same color. Alternatively, the two sub-support portions can be arranged in the same layer and material as any two of the first filter unit, the second filter unit, and the second filter unit. For example, the two sub-support portions can be arranged in the same layer and material as the first filter unit and the second filter unit, respectively. It should be noted that the sum of the thicknesses of the two stacked sub-support portions is equal to the sum of the thicknesses of the single-layer support portion and the black matrix 35.

[0085] For display panels without a planarization layer 26 in the frame region 2002, the support portion 37 located on the side of the black matrix 35 in the frame region 2002 away from the package substrate 4 can be considered to include stacked sub-support portions of two colors when the ratio of the thickness of the sealant 5 to the thickness of the liquid crystal layer 34 is less than 1 or the thickness of the sealant 5 is less than or equal to 2 mm. For display panels with a planarization layer 26, the support portion 37 is a single-layer structure, provided on the same layer and material as the single-color filter elements in the filter portion 36.

[0086] As shown in Figure 9, when the support portion 37 includes two stacked sub-support portions of different colors, the support portion can shield the display panel's border area 2002 from light. Specifically, the black matrix 35 is removed from the border area 2002, and the orthographic projection of the filter portion 36 on the packaging substrate 4 covers only the display area 100 and the dummy pixel area 2001. This expands the coverage area of ​​the support portion 37, with the orthographic projection of the support portion 37 on the base substrate 1 covering the border area 2002. By overlapping the sub-support portions of different colors, most visible light can be filtered out.

[0087] The display panel also includes a columnar spacer portion 6, which includes a main columnar spacer column 61 and a sub-columnar spacer column 62. The main columnar spacer column 61 is taller than the sub-columnar spacer column 62. The main columnar spacer column and the sub-columnar spacer column in the display area 100 are arranged on the side of the filter unit away from the packaging substrate 4. The main columnar spacer column 61 and the sub-columnar spacer column 62 in the non-display area 200 are respectively arranged on the side of the black matrix 35 away from the first base substrate 1. The end of the columnar spacer column 6 in the display area 100 away from the base substrate 1 abuts against the thin film transistor 20, while the end of the columnar spacer column 6 in the non-display area 200 away from the base substrate 1 abuts against the data line 251, thereby maintaining the thickness of the liquid crystal display panel.

[0088] As shown in FIG10 , for a single-layer support portion 37, the support portion 37 can be formed from the same layer and material as the spacer portion, and the thickness of the support portion 37 can be greater than or equal to the thickness of the filter unit of any color. As shown in FIG11 , for a double-layer support portion 37, the support portion 37 includes a first sub-support portion 371 and a second sub-support portion 373. The first sub-support portion 371 is formed from the same layer and material as the filter unit of one color in the filter portion 36, and the second sub-support portion 373 is formed from the same layer and material as the columnar spacer portion 6.

[0089] As shown in Figure 12, for a display panel without a planarization layer 26 in the border area 2002, the filter portion 36 can also be positioned on the side of the base substrate 1 closest to the packaging substrate 4. Specifically, the filter portion 36 is positioned on the side of the planarization layer 26 away from the base substrate 1. The pixel electrode 311 is formed on the side of the filter portion 36 away from the base substrate 1. The configuration of the protective layer 32 and the common electrode 331 can be the same as in Figures 3 to 11 and will not be further described here. The filter portion 36 includes a first filter unit, a second filter unit, and a third filter unit. The black matrix 35 is positioned on the side of the packaging substrate 4 closest to the base substrate 1. The portion of the black matrix 35 located in the display area 100 is provided with a plurality of openings 351. The orthographic projections of the filter units on the packaging substrate 4 are positioned within the openings 351. The support portion 37 may include a first sub-support portion 371, a second sub-support portion 373, and a third sub-support portion 372.

[0090] The support portion 37 can be provided on a side of the array substrate close to the package substrate 4. Specifically, the support portion 37 can be provided in the area of ​​the interlayer dielectric layer 24 in the border region 2002 that is not covered by the planarization layer 26. As shown in FIG13 , for a double-layer support portion 37, the first sub-support portion 371 can be provided on a side of the interlayer dielectric layer 24 away from the base substrate 1, and the second sub-support portion 373 can be provided on a side of the first sub-support portion 371 away from the base substrate 1.

[0091] As shown in Figures 14 and 15 , the first sub-support portion 371 can also be disposed on the side of the base substrate 1 close to the package substrate 4, and the second sub-support portion 373 can be disposed on the side of the package substrate 4 close to the base substrate 1. As shown in Figure 14 , the first sub-support portion 371 is disposed on the same layer and material as the filter units of one color in the filter portion 36, while the second sub-support portion 373 is disposed on the same layer and material as the columnar spacer portion 6. As shown in Figure 15 , the first sub-support portion 371 is disposed on the same layer and material as the filter units of one color in the filter portion 36, while the second sub-support portion 373 is disposed on the same layer and material as the filter units of another color in the filter portion 36.

[0092] Figure 16 is a schematic plan view of a display panel without a planarization layer. The display panel may include a base substrate 1, a buffer layer 7 disposed on one side of the base substrate 1, a gate electrode and a common electrode disposed on the side of the buffer layer 7 facing away from the base substrate 1, a gate insulating layer disposed on the side of the gate electrode and common electrode facing away from the base substrate 1, an active layer disposed on the side of the gate insulating layer facing away from the base substrate 1, a source electrode and a drain electrode disposed on the side of the active layer facing away from the base substrate 1, an interlayer dielectric layer disposed on the side of the source electrode and drain electrode facing away from the base substrate 1, and a pixel electrode disposed on the side of the interlayer dielectric layer facing away from the base substrate 1, the pixel electrode being connected to the source electrode via a via. The layers above the pixel electrode are substantially the same as those in Figure 2 and are not further described here.

[0093] A support portion 37 is provided on the side of the black matrix 35 of the border area 2002 away from the packaging substrate 4. The support portion 37 is provided in the same layer and material as the filter unit of one color in the filter portion 36. The support portion 37 can be provided in the same layer and material as the third filter unit 363. The support portion 37 is provided in the same layer and material as the second filter unit 362 or the first filter unit 361, which is not specifically limited here. It should be noted that the support portion 37 can be provided parallel to the edge of the packaging substrate 4. A frame sealant 5 is provided between the support portion 37 and the interlayer dielectric layer, and the orthographic projection of the frame sealant 5 on the base substrate 1 is located within the orthographic projection of the support portion 37 on the base substrate 1.

[0094] As shown in Figures 3 and 16, for display panels with a relatively thin liquid crystal layer 34 (thickness of the liquid crystal layer 34 ≤ 2.4 μm), the minimum dimension of the currently available supports 52 is typically greater than or equal to 2.25 μm. The thickness of the frame sealant 5 is calculated using the following formula (2). When the cell thickness is 2.4 μm, the thickness of the frame sealant 5 is less than or equal to 1 μm. When the thickness of the frame sealant 5 is less than or equal to 1 mm, the frame sealant 5 consists of the glue body 51, and the supports 52 in the glue body 51 can be eliminated. When the thickness of the frame sealant 5 is greater than 1 mm, the frame sealant 5 includes the glue body 51 and the supports 52 mixed in the glue body 51.

[0095] When the display panel is not provided with the support portion 37: T = T CG +T R +T ITO2 +T ITO1 +2×T PI -T BM -T G 1);

[0096] When the display panel is provided with the support portion 37: T = T CG +T ITO2 +T ITO1 +2×T PI -T BM -T G 2);

[0097] Wherein, in formula 1) and formula 2), T is the thickness of the sealant 5, T CG is the thickness of the liquid crystal layer 34, T R is the thickness of the filter portion 36, T ITO1 is the thickness of the second conductive layer 31, T ITO2 is the thickness of the third conductive layer 33, T PI is the thickness of the alignment film, T BM is the thickness of the black matrix 35, T G is the thickness of the gate layer 23 .

[0098] When calculating the thickness of the sealant 5, the thickness of the frame sealant 5 in the display panel shown in FIG4 is calculated by subtracting the thickness of the filter portion 36 from the thickness of the frame sealant 5 compared to the display panel shown in FIG2 . For display panels without a planarizing layer 26 in the frame region 2002 and with a thinner liquid crystal layer 34, if the ratio of the thickness of the frame sealant 5 to the thickness of the liquid crystal layer 34 is less than 1, or if the thickness of the frame sealant 5 is less than or equal to 1 mm, the structure shown in FIG16 may be used. For display panels with a planarizing layer 26 in the frame region 2002 and with a thinner liquid crystal layer 34, if the ratio of the thickness of the frame sealant 5 to the thickness of the liquid crystal layer 34 is less than 2, or if the thickness of the frame sealant 5 is less than or equal to 3 mm, the structure shown in FIG4 may be used. For display panels with a planarizing layer 26 in the frame region 2002 and with a thinner liquid crystal layer 34, if the ratio of the thickness of the frame sealant 5 to the thickness of the planarizing layer 26 is less than 2.5, the structure shown in FIG4 may also be used.

[0099] As shown in Figure 17, for the spliced ​​display screen, the shape of the two liquid crystal display panels can be polygonal, and the two liquid crystal display panels are both rectangular for illustration. The non-display area 200 includes a virtual pixel area 2001 and a frame area 2002 arranged in sequence away from the display area 100. The frame area 2002 at the splicing edge of the display panel is cut off at the position of the reference line E. The frame sealant 5 is applied to the filter unit of the display area 100, and of course it can also be applied to the filter unit of the virtual pixel area 2001. A support portion 37 is provided in the frame area 2002 on the other three sides of the display panel. The frame sealant 5 is provided between the support portion 37 and the interlayer dielectric layer of the frame area 2002. A gate drive area is usually provided between the virtual pixel area 2001 and the frame area 2002. A plurality of GOA units (gate drive circuits) are provided in the gate drive area. Therefore, the frame sealant 5 on the other three sides is spaced apart from the filter portion 36.

[0100] In this way, for extra-large-sized LCD panels, the frame sealant 5 can achieve a maximized width, improve the peripheral pressure resistance, and improve the risk of light leakage at its edges. For medium and large-sized special-shaped LCD panels, the amount of glue spitting can be reduced, and while the frame sealant 5 obtains a larger width, the glue coating accuracy is increased and the risk of glue overflow is reduced. For LCD panels with low box thickness, the support 52 in the frame sealant can be eliminated, and there is no need to match the box thickness of the support 52 with the display area 100. For LCD panels with the flattening layer 26 of the frame area 2002 dug out, the box thickness of the support 52 and the display area 100 can be better matched; for spliced ​​display screens, the box thickness can be guaranteed to be consistent on all sides, ensuring the display quality of the spliced ​​display screen. This ensures the peripheral image quality of various types of LCD panels.

[0101] Only one form of the support portion being provided on a liquid crystal display panel having an unplanarized layer 26 is shown above in FIG16 . The support portion provision forms shown in FIG4 to FIG15 can also be applied to liquid crystal display panels having an unplanarized layer 26. It is understood that the embodiments of the present disclosure are applicable to liquid crystal display panels having no planarized layer 26, liquid crystal display panels having a planarized layer 26, and liquid crystal display panels having the planarized layer 26 removed from the portion of the planarized layer in the border area 2002. The provision of the support portion is not limited to the display panel structures listed above, and can be applied to the edges of other display panels. The display panel includes all display modes, not limited to the horizontal edge field display mode, but can also be other display modes, which are not listed here one by one.

[0102] It should be noted that no matter which display panel in FIG. 3 to FIG. 17 is used, the width of the support portion 37 is expressed as follows: W≥W1+W2+W3 3);

[0103] In formula 3), W is the width of the frame sealant 5, W2 is the glue coating accuracy, and W3 is the glue overflow accuracy. The size of W2 is generally 0.1 mm, and W3 is usually 20% of W2. The glue overflow accuracy on both sides of the frame sealant 5 is the same, so the glue overflow accuracy on one side is 10%.

[0104] The present disclosure also provides a display device. The display device may include any of the display panels mentioned above. The specific structure and beneficial effects of the display panel have been described in detail above and are therefore not repeated here.

[0105] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as circuit boards, power cords, etc. Those skilled in the art can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0106] The display device can be a traditional electronic device, such as a mobile phone, a computer, a television, a projector, and a camcorder, or it can be an emerging wearable device, such as a VR wearable device, which are not listed here one by one.

[0107] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel having a display area and a non-display area located outside the display area, wherein: The display panel further includes: substrate substrate; A liquid crystal layer, disposed on one side of the base substrate and located in the display area; A packaging substrate, disposed on a side of the liquid crystal layer away from the base substrate; A support portion, provided on a side of the packaging substrate or the base substrate close to the liquid crystal layer, and the support portion is located in the non-display area; The frame-sealing glue is arranged between the support portion and the base substrate when the support portion is arranged on the side of the base substrate close to the liquid crystal layer; and the frame-sealing glue is arranged between the support portion and the packaging substrate when the support portion is arranged on the side of the base substrate close to the liquid crystal layer.

2. The display panel according to claim 1, wherein: The orthographic projection of the frame sealing glue on the base substrate is located within the orthographic projection of the supporting portion on the base substrate.

3. The display panel according to claim 1, wherein: The display panel also includes a black matrix and a filter portion located between the base substrate and the packaging substrate, the filter portion includes filter units of at least three different colors, a portion of the black matrix located in the display area is provided with a plurality of openings, and the orthographic projection of the filter unit on the packaging substrate is located within the opening.

4. The display panel according to claim 3, wherein: The non-display area includes a virtual pixel area and a frame area which are arranged in sequence away from the display area, the filter part is arranged in the display area and the virtual pixel area, the support part is arranged in the frame area, and the frame sealing glue on at least part of the edge of the display panel is spaced apart from the filter part.

5. The display panel according to claim 4, wherein: The display panel is polygonal, and the frame sealing glue on at least one side of the display panel is arranged on the light filtering part.

6. The display panel according to claim 3, wherein: The supporting portion includes at least three sub-supporting portions of different colors, the orthographic projections of the sub-supporting portions of different colors on the base substrate at least partially do not overlap, the sub-supporting portions of the same color are arranged in the same layer and the same material as the sub-filtering units of the same color, and the thicknesses of at least three sub-supporting portions of different colors are equal.

7. The display panel according to claim 3, wherein: The support portion and the filter unit of one color in the filter portion are arranged in the same layer and made of the same material.

8. The display panel according to claim 4, wherein: The support portion includes sub-support portions of at least two colors stacked together, the orthographic projections of the support portions of different colors on the base substrate overlap, and the sub-support portions of the same color are arranged in the same layer and the same material as the sub-filtering units of the same color.

9. The display panel according to claim 8, wherein: The orthographic projection of the filter portion on the packaging substrate covers the display area, and the orthographic projection of the support portion on the base substrate covers the frame area.

10. The display panel according to claim 1, wherein: The ratio of the thickness of the frame sealant to the thickness of the liquid crystal layer is less than 1.

11. The display panel according to claim 1, wherein: The display panel also includes an organic film, which is arranged on a side of the base substrate close to the liquid crystal layer. The orthographic projection of the organic film on the base substrate does not overlap with the orthographic projection of the frame-sealing glue on the base substrate, and the ratio of the thickness of the frame-sealing glue to the thickness of the liquid crystal layer is less than 1.

12. The display panel according to claim 1, wherein: When the thickness of the frame-sealing glue is less than or equal to 1 mm, the frame-sealing glue consists of a glue body; when the thickness of the frame-sealing glue is greater than 1 mm, the frame-sealing glue includes a glue body and a support mixed in the glue body.

13. The display panel according to claim 11, wherein: The ratio of the thickness of the frame sealant to the thickness of the organic film is less than 2.

5.

14. The display panel according to claim 3, wherein: The black matrix is ​​arranged on a side of the packaging substrate close to the base substrate, and the filter portion is arranged on a side of the base substrate close to the packaging substrate.

15. The display panel according to claim 3, wherein: The black matrix and the light filtering part are both arranged on a side of the packaging substrate close to the base substrate.

16. The display panel according to claim 3, wherein: The display panel further comprises a columnar spacer portion, which is arranged on a side of the filter portion and the black matrix away from the packaging substrate, and the support portion and the columnar spacer portion are arranged in the same layer and with the same material.

17. The display panel according to claim 16, wherein: The thickness of the supporting portion is greater than or equal to the thickness of the filter unit of any one color.

18. The display panel according to claim 3, further comprising a columnar spacer portion, wherein the columnar spacer portion is disposed on a side of the filter portion and the black matrix away from the packaging substrate, wherein: The support portion includes a first sub-support portion and a second sub-support portion, wherein the first sub-support portion and the filter unit of one color in the filter portion are provided in the same layer and material, and the second sub-support portion and the columnar spacer portion are provided in the same layer and material.

19. The display panel according to claim 18, wherein: The first sub-support portion is disposed on a side of the base substrate close to the packaging substrate, and the second sub-support portion is disposed on a side of the packaging substrate close to the base substrate.

20. A display device, wherein: A display panel comprising any one of claims 1 to 19.

Images