Display panel and display device

Abstract

According to the display panel, a supporting part (37) is arranged on the side, close to a liquid crystal layer (34), of a non-display area (200), a packaging substrate (4) or a substrate (1), so that the vertical space coated with frame sealing glue (5) is reduced, the wider glue width of the frame sealing glue (5) can be achieved on the premise that the glue spitting amount is the same, or under the condition that the glue width of the frame sealing glue (5) is the same, the frame sealing glue (5) can be used for sealing the liquid crystal layer (34). The glue consumption of the packaging glue (5) can be greatly reduced, the box thickness of the periphery of the large and medium-sized liquid crystal display panel can be ensured, and the image quality of a display image is not influenced. In addition, for the spliced display screen, the box thickness on the periphery of the spliced display screen can be ensured to be consistent, and the display quality of the spliced display screen is ensured. The invention further provides a display device comprising the display panel.

Description

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 glue need to be dripped onto a base substrate or a color filter substrate, and then the base substrate and the color filter substrate are assembled, and then the frame-sealing glue is cured.

[0003] Currently, the space for frame sealing glue in the height direction is relatively 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, which affects 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 the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The present disclosure provides a display panel and a display device.

[0006] 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 sealant. 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 sealant is arranged between the support portion and the base substrate, and when the support portion is arranged on a side of the base substrate close to the liquid crystal layer, the frame sealant is arranged between the support portion and the base substrate.

[0007] 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.

[0008] In one embodiment of the present disclosure, 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 at least three filter units of 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.

[0009] In one embodiment of the present disclosure, 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.

[0010] In one embodiment of the present disclosure, the display panel is polygonal, and the frame sealing glue on at least one side of the display panel is disposed on the light filtering portion.

[0011] 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 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.

[0012] In one embodiment of the present disclosure, the support portion and the filter units of one color in the filter portion are arranged in the same layer and with the same material.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] In one embodiment of the present disclosure, 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.

[0017] In one embodiment of the present disclosure, 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, and 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.

[0018] 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.

[0019] 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.

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

[0021] In one embodiment of the present disclosure, 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.

[0022] 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.

[0023] In one embodiment of the present disclosure, the display panel also includes 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 supporting portion includes a first sub-support portion and a second sub-support portion, the first sub-support portion is arranged on the same layer and the same material as a filter unit of one color in the filter portion, and the second sub-support portion is arranged on the same layer and the same material as the columnar spacer portion.

[0024] In one embodiment of the present disclosure, the first sub-support portion is disposed on a side of the base substrate close to the package substrate, and the second sub-support portion is disposed on a side of the package substrate close to the base substrate.

[0025] 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.

[0026] 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 present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings herein are incorporated into the specification 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 accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0028] Figure 1 It is a schematic cross-sectional view of the display panel involved in the embodiment of the present disclosure when no planarization layer and no support portion are provided.

[0029] Figure 2 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.

[0030] Figure 3 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.

[0031] Figure 4 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.

[0032] Figure 5 It is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the supporting portion includes three sub-supporting portions and the frame area is not provided with a planarizing layer.

[0033] Figure 6 It is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the frame sealing glue does not cover the clock signal line.

[0034] Figure 7 It is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the frame sealing glue covers the scanning signal line and the clock signal line.

[0035] Figure 8 When the supporting portion includes sub-supporting portions of two colors stacked together, it is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure.

[0036] Fig. 9 When the orthographic projection of the support portion on the base substrate covers the frame area, it is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure.

[0037] Fig.10 When the support portion and the spacer portion are provided in the same layer and the same material, it is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure.

[0038] Fig.11 A schematic cross-sectional view 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 with the same material, and the support portion includes sub-support portions of two colors stacked together.

[0039] Fig.12 It is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the filter portion is arranged on a side of the base substrate close to the packaging substrate and the support portion is a single-layer structure.

[0040] Fig.13 It is a cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the filter portion is arranged on a side of the base substrate close to the packaging substrate and the support portion is a double-layer structure.

[0041] Fig.14 A cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the first sub-support portion is arranged on the packaging substrate and the second sub-support portion is arranged on the base substrate.

[0042] Fig.15 Another cross-sectional schematic diagram of the display panel involved in the embodiment of the present disclosure when the first sub-support portion is arranged on the packaging substrate and the second sub-support portion is arranged on the base substrate.

[0043] Fig.16 It is a schematic plan view of the display panel involved in the embodiment of the present disclosure when the planarization layer is not provided and the support portion is provided.

[0044] Fig.17 A schematic plan view of a display panel according to an embodiment of the present disclosure when forming a spliced ​​display screen.

[0045] In the figure: 1-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 routing, 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, 3 5-black matrix, 351-opening, 36-filtering part, 361-first filter unit, 362-second filter unit, 363-third filter unit, 37-supporting part, 371-first sub-supporting part, 373-second sub-supporting part, 372-third sub-supporting 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

[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0047] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0048] 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 an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0049] like Figure 1 As shown, the liquid crystal display panel includes a color filter substrate, an array substrate, a liquid crystal layer 34 and a sealant 5, wherein 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, the sealant 5 is located in the frame area 2002, and the frame area 2002 is located outside the display area 100. In the production of the liquid crystal display panel, it is necessary to drip liquid crystal and the sealant 5 on the array substrate or the color filter substrate, then assemble the array substrate and the color filter substrate, and then cure the sealant 5. The function of the sealant 5 is to bond the array substrate and the color filter substrate, and to protect the liquid crystal layer in the middle from the influence of external air and water.

[0050] The sealant 5 generally includes a glue body 51 and a support 52 mixed in the glue body 51, and the support 52 may be a plastic ball. The support 52 is used to support the thickness of the liquid crystal layer periphery to ensure that the thickness of the frame area 2002 of the liquid crystal display panel is consistent with the thickness of the display area 100. The sealant 5 is arranged between the black matrix 35 on the color film substrate and the insulating layer on the array substrate. The film layer structure of the frame area 2002 is the black matrix 35, the sealant 5 and the gate layer. The distance between the black matrix 35 and the gate layer is large, which results in a large amount of sealant 5 required.

[0051] Especially for ultra-large-sized liquid crystal display panels (≥85 inches), the required width of the frame sealant 5 is greater than or equal to 2.8 mm. 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 4 mm, and the amount of frame sealant 5 will be doubled, which is limited by the glue dispensing amount of the glue coating equipment and cannot be achieved.

[0052] In addition, the glue coating equipment cannot detect medium and large-sized special-shaped screens (such as 23.6-inch round screens), so a larger glue width is required to ensure glue continuity and glue leakage. A larger width of the frame sealant 5 is required to ensure the image quality around the LCD screen. The width of the frame sealant 5 needs to reach 2.0mm. The glue coating equipment has a limited amount of glue, and the larger the glue amount, the lower the coating accuracy, and there is a risk of glue overflow.

[0053] like Figure 2As shown, for some liquid crystal display panels with higher display quality requirements, the liquid crystal display panel is further provided with a planarization layer 26. In order to meet the anti-peeling characteristics of some liquid crystal display panels, the planarization layer 26 at the coating position of the frame sealant 5 on the array substrate is dug out to ensure 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, and the frame sealant 5 needs to use some larger supports 52. Generally, the larger the size of the support 52, the worse the uniformity, which is easy to affect the image quality around the display area 100.

[0054] As the response time of display requirements becomes faster and faster, the cell thickness of current liquid crystal display panels has been greatly reduced. A 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 suppliers need 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.

[0055] In addition, in order to save the cost of mask plates, more and more LCD panels are freely spliced, but the spliced ​​LCD panels have inconsistent peripheral box thickness. Take the horizontal splicing of two LCD panels as an example, one LCD panel is indented on the left side, and the other LCD panel is indented on the right side, and the indented edges of the two LCD panels are spliced.

[0056] The frame sealant 5 of the retracted splicing edge moves inward to the position where the filter portion 36 is provided, so that the box thickness of the splicing edge is lower than that of the other three sides by the thickness of the filter portion 36. In order to ensure the support capacity of the frame area 2002 of the liquid crystal display panel, when the frame sealant 5 adds the size of the support 52 according to the peripheral box thickness of the other three sides, the liquid crystal display panel will be subjected to greater pressure at the splicing edge, and the other three sides will thus have serious peripheral yellowing. If the size of the support 52 is selected according to the box thickness of the splicing edge, the other three sides will have peripheral problems due to insufficient support.

[0057] Based on this, the present disclosure provides a display panel. Figures 3 to 16 As shown, 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 sealing glue 5. The liquid crystal layer 34 is arranged on one side of the base substrate 1 and is located in the display area 100; the packaging substrate 4 is arranged on a side of the liquid crystal layer 34 away from the base substrate 1; the support portion 37 is arranged 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 arranged on a side of the packaging substrate 4 close to the liquid crystal layer 34, the sealing glue 5 is arranged between the support portion 37 and the base substrate 1, and when the support portion 37 is arranged on a side of the base substrate 1 close to the liquid crystal layer 34, the sealing glue 5 is arranged between the support portion 37 and the base substrate 1.

[0058] 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 close to the liquid crystal layer 34. 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. The vertical space for coating the frame sealant 5 is reduced, and under the premise of the same glue discharge amount, a wider glue width of the frame sealant 5 can be achieved, or under the condition of equal glue width, the glue amount of the packaging glue can be greatly reduced, which can ensure the box thickness around the medium and large-sized liquid crystal display panel without affecting the image quality of the display screen.

[0059] The display panel involved in the implementation manner of the present disclosure is described in detail below with reference to specific embodiments.

[0060] like Figure 3 As shown, the display panel may include a base substrate 1, a driving circuit layer 2, a pixel layer 3 and a packaging substrate 4 which are stacked in sequence, a buffer layer 7 is provided on one side of the base substrate 1, the 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.

[0061] The substrate 1 may be an inorganic substrate 1 or an organic substrate 1. For example, in one embodiment of the present disclosure, the substrate 1 may be made of glass materials such as soda-lime glass, quartz glass, sapphire glass, or metal materials such as stainless steel, aluminum, and nickel.

[0062] In another embodiment of the present disclosure, the material of the substrate 1 can be polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyether sulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), polyethylene terephthalate (PEmmhylenemmerephmmhalamme), polyethylene naphthalate (PEN) or a combination thereof.

[0063] In another embodiment of the present disclosure, the substrate 1 may also be a flexible substrate 1, for example, the material of the substrate 1 may be polyimide (PI). The substrate 1 may also be a composite of multiple layers of materials. For example, in one embodiment of the present disclosure, the substrate 1 may include a bottom film layer (BommmmomFilm), a pressure-sensitive adhesive layer, a first polyimide layer, and a second polyimide layer stacked in sequence.

[0064] The driving circuit layer 2 includes a driving transistor, which may be a thin film transistor 20, which may be selected from a top-gate thin film transistor, a bottom-gate thin film transistor or a double-gate thin film transistor. The material of the active layer 21 may be an amorphous silicon semiconductor material, a low-temperature polysilicon semiconductor material, a metal oxide semiconductor material, an organic semiconductor material or other types of semiconductor materials; the thin film transistor 20 may be an N-type thin film transistor or a P-type thin film transistor.

[0065] 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 a source 252 of the driving transistor, and the other may be a drain 253 of the driving transistor, and the control terminal may be a gate 232 of the driving transistor. It can be understood that the source 252 and the drain 253 of the driving transistor are two relative and mutually convertible concepts; when the working 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.

[0066] 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 is provided with 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.

[0067] 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, and the thin film transistor 20 formed in this way is a bottom-gate thin film transistor.

[0068] The gate layer 23 can be used to form a gate, a gate drive line, and a clock signal line 231. The active layer 21 includes a channel region and a source region and a drain region located on both sides of the channel region; wherein the channel region can maintain semiconductor characteristics, and the semiconductor materials of the source region and the drain region are partially or completely conductive. It can also be used to form a gate 232 of a transistor, and can also be used to form part or all of the electrode plates of a storage capacitor. The first conductive layer 25 can be used to form data wiring 251, power wiring and other wiring.

[0069] In the display area 100, the gate layer 23 may include a gate 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 252 and a drain 253, the source 252 and the drain 253 may be directly formed on the side of the active layer 21 away from the base substrate 1, the source 252 overlaps the source region of the active layer 21, and the drain 253 overlaps the drain region of the active layer 21. In the non-display area 200, the gate layer 23 includes a scanning signal line 234 disposed sequentially in a direction away from the display area 100 and a plurality of clock signal lines 231 disposed at intervals, and the gate insulating layer 22 may extend from the display area 100 to the side of the clock signal line 231 away from the base substrate 1.

[0070] The driving circuit layer 2 may further include an interlayer dielectric layer 24 and a planarization layer 26, wherein the interlayer dielectric layer 24 covers the source electrode 252, the drain electrode 253 and the side of the gate insulating layer 2222 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 away from the base substrate 1, and 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, and the surface of the planarization layer 26 away from the base substrate 1 is a plane. According to different situations, the planarization layer 26 may be provided as one layer or multiple layers.

[0071] The display panel also includes a pixel layer 3, which is arranged on a side of the driving 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 arranged on a side of the planarization layer 26 away from the base substrate 1. The second conductive layer 31 may include a pixel electrode 311, and the pixel electrode 311 is connected to the source electrode 252 through a via hole. The protective layer 32 covers the pixel electrode 311 and the planarization layer 26. A protective layer 32 is arranged on a 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 arranged on a side of the protective layer 32 away from the base substrate 1. The third conductive layer 33 may include a common electrode 331. The liquid crystal layer 34 is arranged on a side of the third conductive layer 33 away from the base substrate 1. Usually, the liquid crystal layer 34 includes an alignment layer ( Figure 3 The third conductive layer 33 may further include a reference signal line 332, which is connected to a transfer portion 233 provided on the gate layer 23 through a via hole.

[0072] The pixel electrode 311 and the common electrode 331 both have a driving surface, so it can be considered that the liquid crystal layer 34 is located between the pixel electrode 311 and the common electrode 331, and the pixel electrode 311, and the corresponding portion of the liquid crystal layer 34 and the corresponding portion of the common electrode 331 form a sub-pixel 301. The gate of the thin film transistor 20 inputs a switching signal, and the active portion 210 of the thin film transistor 20 is conductive. The data signal can reach the drain 253 of the thin film transistor 20 from the source 252 of the thin film transistor 20 through the channel region of the active portion 210, and is input to the pixel electrode 311 by the drain 253 of the thin film transistor 20. The common electrode 331 inputs a reference signal, and a voltage difference is formed between the common electrode 331 and the pixel electrode 311, so that the pixel electrode 311 and the common electrode 331 form an electric field for driving the liquid crystal molecules to rotate, and the transmittance of the liquid crystal molecules is changed by the electric field to realize the display of different images.

[0073] like Figure 4 As shown, the non-display area 200 includes a virtual pixel area 2001 and a frame area 2002 sequentially arranged in a direction away from the display area 100. In order to improve the anti-peeling performance 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 virtual pixel area 2001, and the portion of the planarization layer 26 located in the frame 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 frame area 2002.

[0074] 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, and 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.

[0075] 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 arranged in 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 arranged on a side of the package substrate 4 close to the base substrate 1.

[0076] like Figure 4 As shown, a support portion 37 is provided on one side of the black matrix 35 of the frame area 2002 away from the package substrate 4, and the support portion 37 is provided in the same layer and material as a 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 package substrate 4.

[0077] like Figure 5 As shown, the support portion 37 includes sub-support portions of three different colors, and 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, and the sub-support portions of the same color are arranged in the same layer and the same material as the sub-filtering unit of the same color, and the thicknesses of at least three sub-support portions of different colors are equal.

[0078] A sealant 5 is provided between the support portion 37 and the protective layer 32, and the orthographic projection of the sealant 5 on the base substrate 1 is located within the orthographic projection of the support portion 37 on the base substrate 1. The support portion 37 reduces the vertical space for coating the sealant 5, and under the premise of the same amount of glue ejection, a wider sealant 5 glue width can be achieved, or the sealant 5 can greatly reduce the amount of glue used for the packaging glue under the condition of equal glue width, which can ensure the box thickness around the medium and large-sized liquid crystal display panel without affecting the image quality of the display screen.

[0079] On the side of the base substrate 1, the sealant 5 should not cover the clock signal line 231 or fully cover the clock signal line 231. Half-covering the clock signal line will cause coupling, resulting in horizontal stripes on the display screen. Figure 6As shown, when the sealant 5 does not cover the clock signal line 231, the sealant 5 at most covers the scan signal line 234 closest to the display area 100. Figure 7 As shown, when the frame sealant 5 covers the clock signal line 231 , the frame sealant 5 covers the scan signal line 234 and all the clock signal lines 231 .

[0080] Whether the frame sealant 5 covers all the clock signal lines 231 depends on the width of the frame sealant 5 and the distance limit between the frame sealant 5 and the clock signal line 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 line 231 is far, so the frame sealant 5 may not cover the clock signal line 231.

[0081] The support portion 37 may include three sub-support portions, sub-support portions of different colors are arranged adjacent to each other, and the orthographic projections of the sub-support portions of different colors on the base substrate 1 do not overlap each other, and 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. 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.

[0082] 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 inconsistent, for example, in order to improve the transmittance of the filter part 36, the thickness of the second filter unit 362 is less than the thickness of the first filter unit 361 and the thickness of the third filter unit 363, this will cause the surface of the support part 37 to be relatively uneven, thereby causing the support force provided by the frame sealant 5 to be uneven. In order to ensure the flatness of the support part 37, the support part 37 and the filter unit of one color in the filter part 36 are usually arranged in the same layer and the same material.

[0083] like Figure 8 As shown, in order to adjust the height of the frame sealant 5, the thickness of the support portion 37 can be increased, and the support portion 37 can include two sub-support portions of stacked colors, and the support portions of different colors overlap in the orthographic projection on the base substrate 1, and 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. It can be that 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 thickness of the two stacked sub-support portions is equal to the sum of the thickness of the single-layer support portion and the black matrix 35.

[0084] For a display panel without a planarization layer 26 in the frame area 2002, the support portion 37 located on the side of the black matrix 35 in the frame area 2002 away from the packaging substrate 4 can be regarded as including sub-support portions of two colors stacked when the ratio of the thickness of the frame sealant 5 to the thickness of the liquid crystal layer 34 is less than 1 or the thickness of the frame sealant 5 is less than or equal to 2 mm. For a display panel with a planarization layer 26, the support portion 37 is a single-layer structure, and is arranged in the same layer and material as the filter unit of one color in the filter portion 36.

[0085] like Fig. 9 As shown, when the support portion 37 includes two sub-support portions of stacked colors, the support portion can be used to shield the frame area 2002 of the display panel. Specifically, the black matrix 35 is removed from the frame area 2002, and the orthographic projection of the filter portion 36 on the package substrate 4 only covers the display area 100 and the virtual pixel area 2001, so that the coverage area of ​​the support portion 37 is expanded, and the orthographic projection of the support portion 37 on the base substrate 1 covers the frame area 2002. By overlapping sub-support portions of different colors, most of the visible light can be filtered out.

[0086] The display panel further includes a columnar spacer portion 6, which includes a main columnar spacer column 61 and a sub-columnar spacer column 62. The height of the main columnar spacer column 61 is higher than the height of the sub-columnar spacer column 62. The main columnar spacer column and the sub-columnar spacer column located in the display area 100 are arranged on the side of the filter unit away from the packaging substrate 4, and the main columnar spacer column 61 and the sub-columnar spacer column 62 located in the non-display area 200 are respectively arranged on the side of the black matrix 35 away from the first base substrate 1. One end of the columnar spacer portion 6 in the display area 100 away from the base substrate 1 abuts on the thin film transistor 20, and one end of the columnar spacer portion 6 in the non-display area 200 away from the base substrate 1 abuts on the data wiring 251, which plays a role in maintaining the thickness of the liquid crystal display panel.

[0087] like Fig.10 As shown, for the single-layer support portion 37, the support portion 37 can be provided in 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. Fig.11 As shown, for the 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 arranged in the same layer and with the same material as a filter unit of one color in the filter portion 36, and the second sub-support portion 373 is arranged in the same layer and with the same material as the columnar spacer portion 6.

[0088] like Fig.12As shown, for a display panel in which the flattening layer 26 is not provided in the frame area 2002, the filter portion 36 can also be provided on the side of the base substrate 1 close to the packaging substrate 4, specifically, the filter portion 36 is provided on the side of the flattening layer 26 away from the base substrate 1, and the pixel electrode 311 is formed on the side of the filter portion 36 away from the base substrate 1. The protection layer 32 and the common electrode 331 are provided in the same manner as in FIG. Figures 3 to 11 The filter section 36 includes a first filter unit, a second filter unit and a third filter unit, a black matrix 35 is provided on the side of the package substrate 4 close to the base substrate 1, a portion of the black matrix 35 located in the display area 100 is provided with a plurality of openings 351, and the orthographic projection of the filter unit on the package substrate 4 is located in the opening 351. The support section 37 may include a first sub-support section 371, a second sub-support section 373 and a third sub-support section 372.

[0089] The support portion 37 may be disposed on a side of the array substrate close to the package substrate 4. Specifically, the support portion 37 may be disposed in an area of ​​the interlayer dielectric layer 24 in the frame area 2002 that is not covered by the planarization layer 26. Fig.13 As shown, for the double-layer support portion 37 , the first sub-support portion 371 can be disposed on a side of the interlayer dielectric layer 24 away from the base substrate 1 , and the second sub-support portion 373 can be disposed on a side of the first sub-support portion 371 away from the base substrate 1 .

[0090] like Fig.14 and Fig.15 As shown, the first sub-support portion 371 can also be arranged on a side of the base substrate 1 close to the package substrate 4, and the second sub-support portion 373 can be arranged on a side of the package substrate 4 close to the base substrate 1. Fig.14 As shown, the first sub-support portion 371 is provided in the same layer and the same material as the filter unit of one color in the filter portion 36, and the second sub-support portion 373 is provided in the same layer and the same material as the columnar spacer portion 6. Fig.15 As shown, the first sub-support portion 371 is provided in 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 provided in the same layer and material as the filter unit of another color in the filter portion 36 .

[0091] Fig.16 Schematic diagram of a display panel when a planarization layer is not provided. The display panel may include a substrate 1, a buffer layer 7 is provided on one side of the substrate 1, a gate electrode and a common electrode are provided on the side of the buffer layer 7 away from the substrate 1, a gate insulating layer is provided on the side of the gate electrode and the common electrode away from the substrate 1, an active layer is provided on the side of the gate insulating layer away from the substrate 1, a source electrode and a drain electrode are provided on the side of the active layer away from the substrate 1, an interlayer dielectric layer is provided on the side of the source electrode and the drain electrode away from the substrate 1, a pixel electrode is provided on the side of the interlayer dielectric layer away from the substrate 1, and the pixel electrode is connected to the source electrode through a via. The layers above the pixel electrode and the Figure 2 They are basically the same and will not be elaborated here.

[0092] 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, and the support portion 37 is provided in the same layer and the same material as a filter unit of one color in the filter portion 36. The support portion 37 can be provided in the same layer and the same material as the third filter unit 363. The support portion 37 is provided in the same layer and the same 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.

[0093] like Figure 3 and Fig.16 As shown, for a display panel with a relatively small thickness of the liquid crystal layer 34 (the thickness of the liquid crystal layer 34 is ≤2.4μm), the minimum size of the currently available support 52 is usually greater than or equal to 2.25μm, and the thickness of the frame sealant 5 is calculated by the following formula 2). When the box thickness is 2.4μm, the thickness of the frame sealant 5 is less than or equal to 1μm. When the thickness of the frame sealant 5 is less than or equal to 1mm, the frame sealant 5 is composed of a glue body 51, and the support 52 in the glue body 51 can be eliminated. When the thickness of the frame sealant 5 is greater than 1mm, the frame sealant 5 includes a glue body 51 and a support 52 mixed in the glue body 51.

[0094] When the display panel is not provided with the support portion 37:

[0095] 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:

[0097] T=T CG +T ITO2 +T ITO1 +2×T PI -T BM -T G 2);

[0098] 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 ITO2is 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 .

[0099] When calculating the thickness of the frame sealant 5, Figure 4 The display panel in Figure 2 Compared with the display panel in FIG. 2, the thickness of the frame sealant 5 is reduced by the thickness of the filter portion 36. For a display panel in which the flattening layer 26 is not provided in the frame area 2002 and the thickness of the liquid crystal layer 34 is relatively small, when the ratio of the thickness of the frame sealant 5 to the thickness of the liquid crystal layer 34 is less than 1 or the thickness of the frame sealant 5 is less than or equal to 1 mm, it can be regarded as using Fig.16 For the frame area 2002 having a planarization layer 26 and a display panel with a smaller thickness of the liquid crystal layer 34, the ratio of the thickness of the sealant 5 to the thickness of the liquid crystal layer 34 is less than 2 or the thickness of the sealant 5 is less than or equal to 3mm, which can be regarded as using Figure 4 For a display panel in which the frame area 2002 has a planarization layer 26 and the thickness of the liquid crystal layer 34 is relatively small, when the ratio of the thickness of the frame sealant 5 to the thickness of the planarization layer 26 is less than 2.5, it can also be regarded as adopting Figure 4 The structure in .

[0100] like Fig.17 As shown, for the spliced ​​display screen, the shape of the two liquid crystal display panels can be a polygon, 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, and 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 of the other three sides of the display panel, and 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, and a plurality of GOA units (gate drive circuits) are provided in the gate drive area, so the frame sealant 5 on the other three sides is spaced from the filter portion 36.

[0101] In this way, for an oversized LCD panel, the frame sealant 5 can achieve a maximized width, improve the peripheral compression resistance, and improve the risk of light leakage at its edge. 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 glue 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 of the four sides can be guaranteed to be consistent to ensure the display quality of the spliced ​​display screen. Thereby ensuring the peripheral image quality of various types of LCD panels.

[0102] Above only Fig.16 FIG. 2 shows a form in which a support portion is provided on a liquid crystal display panel of an unplanarized layer 26. Figures 4 to 15 The arrangement of the middle support portion can also be applied to a liquid crystal display panel without a planarization layer 26. It can be understood that the embodiments of the present disclosure are applicable to a liquid crystal display panel without a planarization layer 26, a liquid crystal display panel with a planarization layer 26, and a liquid crystal display panel without the planarization layer in the frame area 2002. The arrangement of the support portion is not limited to the structure of the display panel listed above, and can be applied to the edges of other forms of display panels. The display panel includes all display modes, not limited to the horizontal edge field display mode, and can also be other display modes, which are not listed here one by one.

[0103] It should be noted that regardless of the Figures 3 to 17 For which display panel is used, the width of the support portion 37 is expressed as follows:

[0104] W≥W1+W2+W3 3);

[0105] 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%.

[0106] 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, so they will not be repeated here.

[0107] 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 lines, etc. Those skilled in the art may make corresponding supplements according to the specific usage requirements of the display device, which will not be elaborated here.

[0108] 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.

[0109] 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 modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are 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 filter 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