Display panel and display device

Abstract

This disclosure relates to a display panel in which a support portion (37) is provided on the side of the non-display area (200) of the encapsulation substrate (4) or substrate substrate (1) near the liquid crystal layer (34). This reduces the vertical space required for the encapsulating adhesive (5) to be applied, allowing for a wider adhesive width (5) with the same amount of adhesive applied. Alternatively, with equal adhesive width, the amount of encapsulating adhesive (5) used can be significantly reduced, ensuring that the cell thickness around the perimeter of medium-to-large-sized liquid crystal display panels does not affect the image quality. Furthermore, for splicing displays, it ensures that the cell thickness around the perimeter is consistent, guaranteeing the display quality of the splicing display. This disclosure also provides a display device including this display panel.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] In the production of liquid crystal display panels, liquid crystal and sealant need to be dripped onto the substrate or color filter substrate, then the substrate and color filter substrate are assembled, and then the sealant is cured.

[0003] Currently, the sealing adhesive has a large space in the height direction, requiring a large amount of adhesive to be applied. However, due to the limitation of the adhesive dispensing capacity of the adhesive application equipment, it is difficult to guarantee the cell thickness around medium and large-sized LCD display panels, which affects the image quality of the display.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] This disclosure provides a display panel and a display device.

[0006] According to one aspect of this disclosure, a display panel is provided, the display panel having a display area and a non-display area located around the display area, the display panel further including a substrate, a liquid crystal layer, an encapsulation substrate, a support portion and an encapsulating adhesive, the liquid crystal layer being disposed on one side of the substrate and located in the display area; the encapsulation substrate being disposed on the side of the liquid crystal layer away from the substrate; the support portion being disposed on the side of the encapsulation substrate or the substrate near the liquid crystal layer, and the support portion being located in the non-display area; when the support portion is disposed on the side of the encapsulation substrate near the liquid crystal layer, the encapsulating adhesive is disposed between the support portion and the substrate, and when the support portion is disposed on the side of the substrate substrate near the liquid crystal layer, the encapsulating adhesive is disposed between the support portion and the encapsulation substrate.

[0007] In one embodiment of this disclosure, the orthographic projection of the sealing adhesive on the substrate lies within the orthographic projection of the support portion on the substrate.

[0008] In one embodiment of this disclosure, the display panel further includes a black matrix and a filter portion located between the substrate and the encapsulation substrate. The filter portion includes filter units of at least three different colors. The portion of the black matrix located in the display area has multiple openings, and the orthographic projection of the filter units on the encapsulation substrate is located within the openings.

[0009] In one embodiment of this disclosure, the non-display area includes a virtual pixel area and a border area arranged sequentially away from the display area, a light filter is disposed in the display area and the virtual pixel area, a support is disposed in the border area, and the sealing adhesive on at least part of the edge of the display panel is spaced apart from the light filter.

[0010] In one embodiment of this disclosure, the display panel is polygonal, and a frame adhesive is applied to at least one side of the display panel onto the light filter portion.

[0011] In one embodiment of this disclosure, the support portion includes at least three sub-support portions of different colors, the orthographic projections of the sub-support portions of different colors on the substrate do not overlap at least partially, the sub-support portions of the same color are disposed in the same layer and with the same material as the sub-filter units of the same color, and the thickness of the at least three sub-support portions of different colors is equal.

[0012] In one embodiment of this disclosure, the support portion and the filter portion are disposed on the same layer and made of the same material as the filter unit of one color.

[0013] In one embodiment of this disclosure, the support portion includes at least two sub-support portions of different colors stacked together. The orthographic projections of the support portions of different colors on the substrate overlap. The sub-support portions of the same color are disposed in the same layer and made of the same material as the sub-filter units of the same color.

[0014] In one embodiment of this 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 substrate covers the border area.

[0015] In one embodiment of this disclosure, the ratio of the thickness of the sealant to the thickness of the liquid crystal layer is less than 1.

[0016] In one embodiment of this disclosure, the display panel further includes an organic film disposed on the side of the substrate close to the liquid crystal layer. The orthographic projection of the organic film on the substrate does not overlap with the orthographic projection of the sealant on the substrate, and the ratio of the thickness of the sealant to the thickness of the liquid crystal layer is less than 1.

[0017] In one embodiment of this disclosure, when the thickness of the sealing adhesive is less than or equal to 1 mm, the sealing adhesive consists of an adhesive body; when the thickness of the sealing adhesive is greater than 1 mm, the sealing adhesive includes an adhesive body and a support mixed in the adhesive body.

[0018] In one embodiment of this disclosure, the ratio of the thickness of the sealing adhesive to the thickness of the organic film is less than 2.5.

[0019] In one embodiment of this disclosure, a black matrix is ​​disposed on the side of the packaging substrate close to the substrate, and a filter portion is disposed on the side of the packaging substrate close to the substrate.

[0020] In one embodiment of this disclosure, both the black matrix and the filter are disposed on the side of the packaging substrate close to the substrate.

[0021] In one embodiment of this disclosure, the display panel further includes a columnar spacer portion, which is disposed on the side of the filter portion and the black matrix away from the encapsulation substrate, and the support portion is disposed in the same layer and material as the columnar spacer portion.

[0022] In one embodiment of this disclosure, the thickness of the support portion is greater than or equal to the thickness of any color filter unit.

[0023] In one embodiment of this disclosure, the display panel further includes a columnar spacer portion disposed on the side of the light filter portion and the black matrix away from the encapsulation substrate. The support portion includes a first sub-support portion and a second sub-support portion. The first sub-support portion is disposed in the same layer and with the same material as the light filter unit of one color in the light filter portion, and the second sub-support portion is disposed in the same layer and with the same material as the columnar spacer portion.

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

[0025] According to another aspect of this disclosure, a display device is provided, comprising a display panel according to any aspect of this disclosure.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0028] Figure 1 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure, without a planarization layer or a support portion.

[0029] Figure 2 A cross-sectional schematic diagram of a display panel according to an embodiment of this disclosure when a planarization layer is provided and no support portion is provided.

[0030] Figure 3 A cross-sectional schematic diagram of a display panel according to an embodiment of this disclosure, wherein a support portion and a planarization layer are provided.

[0031] Figure 4 A cross-sectional schematic diagram of the display panel according to an embodiment of this disclosure, wherein a support portion is provided and no planarization layer is provided in the frame area.

[0032] Figure 5 This is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure, where the support portion includes three sub-support portions and no planarization layer is provided in the frame area.

[0033] Figure 6 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure when the sealing adhesive does not cover the clock signal lines.

[0034] Figure 7 This is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure when the sealing adhesive covers the scan signal lines and clock signal lines.

[0035] Figure 8 When the support portion includes sub-support portions of two colors stacked together, this is a cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure.

[0036] Figure 9 When the orthographic projection of the support portion onto the substrate covers the border area, this is a cross-sectional schematic diagram of the display panel according to an embodiment of this disclosure.

[0037] Figure 10 When the support portion and the spacer portion are made of the same layer and the same material, this is a cross-sectional schematic diagram of the display panel involved in the embodiments of this disclosure.

[0038] Figure 11 A cross-sectional schematic diagram of a display panel according to an embodiment of this disclosure, wherein the support portion and the spacer portion are made of the same layer and the same material, and the support portion includes sub-support portions of two colors stacked together.

[0039] Figure 12 A cross-sectional schematic diagram of the display panel according to an embodiment of this disclosure, wherein the filter part is located on the side of the substrate close to the packaging substrate and the support part is a single-layer structure.

[0040] Figure 13 A cross-sectional schematic diagram of the display panel according to an embodiment of this disclosure, wherein the filter part is located on the side of the substrate close to the packaging substrate and the support part has a double-layer structure.

[0041] Figure 14 This 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 substrate.

[0042] Figure 15 This is another cross-sectional schematic diagram of the display panel according to an embodiment of the present disclosure, where the first sub-support portion is disposed on the packaging substrate and the second sub-support portion is disposed on the substrate.

[0043] Figure 16 This is a planar schematic diagram of a display panel according to an embodiment of the present disclosure, where no planarization layer is provided and a support portion is provided.

[0044] Figure 17 A plan view of the display panel involved in the embodiments of this disclosure when forming a splicing display screen.

[0045] In the diagram: 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-Transition section, 234-Scan signal line, 24-Interlayer dielectric layer, 251-Data trace, 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-Filter section, 361-First filter unit, 362-Second filter unit, 363-Third filter unit, 37-Support section, 371-First sub-support section, 373-Second sub-support section, 372-Third sub-support section, 4-Encapsulation substrate, 5-Sealing adhesive, 51-Adhesive body, 52-Support, 6-Columnar spacer section, 61-Main columnar spacer column, 62-Secondary columnar spacer column, 7-Buffer layer, 100-Display area, 200-Non-display area, 2001-Virtual pixel area, 2002-Border area. Detailed Implementation

[0046] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

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

[0048] The terms “a,” “one,” “the,” “the,” 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 indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of 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. 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 bezel area 2002, which is located around the display area 100. In the production of the liquid crystal display panel, liquid crystal and sealant 5 need to be deposited onto the array substrate or the color filter substrate. Then, the array substrate and the color filter substrate are assembled, and the sealant 5 is cured. The sealant 5 serves to bond the array substrate and the color filter substrate and protect the intermediate liquid crystal layer from the influence of external air and water.

[0050] The sealing adhesive 5 typically includes an adhesive body 51 and a support 52 mixed in the adhesive body 51. The support 52 can be a plastic ball. The support 52 is used to support the cell thickness around the liquid crystal layer to ensure that the cell thickness of the bezel area 2002 of the liquid crystal display panel is consistent with the cell thickness of the display area 100. The sealing adhesive 5 is applied between the black matrix 35 on the color filter substrate and the insulating layer on the array substrate. The film structure of the bezel area 2002 consists of the black matrix 35, the sealing adhesive 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 adhesive 5 being required.

[0051] Especially for ultra-large LCD panels (≥85 inches), the width of the sealant 5 needs to be greater than or equal to 2.8 mm. If the sealant 5 is required to fully cover the clock (CLK) signal line of the gate layer (partial coverage of the clock signal line will cause horizontal stripe problems), the width of the sealant 5 needs to reach more than 4 mm. The amount of sealant 5 used will double, which is not feasible due to the limited amount of sealant dispensed by the coating equipment.

[0052] Furthermore, for medium to large-sized irregularly shaped screens (such as a 23.6-inch circular screen), the adhesive application equipment cannot perform inspections. Therefore, a larger adhesive width is required to ensure no glue leakage or spillage. A larger width of the sealing adhesive 5 is needed to guarantee the image quality around the LCD screen perimeter; the sealing adhesive 5 needs to be at least 2.0mm wide. The adhesive application equipment has a limited dispensing capacity, and the larger the dispensing capacity, the lower the coating precision, posing a risk of adhesive overflow.

[0053] like Figure 2As shown, for some liquid crystal display panels with high display quality requirements, a planarization layer 26 is also provided. In order to meet the anti-peeling characteristics of some liquid crystal display panels, the planarization layer 26 at the coating position of the sealant 5 on the array substrate is removed to ensure that the sealant 5 does not contact the planarization layer 26, which improves the adhesion of the frame. However, this will increase the height difference at the perimeter, and the sealant 5 needs to use some larger supports 52. Generally, the larger the size of the support 52, the worse the uniformity, which can easily affect the image quality around the display area 100.

[0054] As display demand response times become faster, the cell thickness of current LCD panels has been greatly reduced. A smaller cell thickness means that the thickness of the sealing glue 5 is getting smaller and smaller. Therefore, the size of the support 52 is also becoming smaller and smaller. The existing size of the support 52 is no longer sufficient to meet the requirements. Suppliers need to redevelop it to match the size of the support 52 with the height of the cell thickness and ensure the image quality around the display area 100.

[0055] Furthermore, to save on photomask costs, more and more LCD panels are being freely spliced ​​together. However, this results in inconsistent cell thickness around the edges of the spliced ​​LCD panels. Taking the horizontal splicing of two LCD panels as an example, one LCD panel has its left side recessed, and the other LCD panel has its right side recessed. The recessed edges of the two LCD panels are then spliced ​​together.

[0056] The sealant 5 of the recessed splicing edge is moved inward to the position where the light filter 36 is located, making the thickness of the splicing edge lower than that of the other three sides by the thickness of one light filter 36. In order to ensure the support capacity of the LCD panel bezel area 2002, when the sealant 5 is adjusted according to the size of the support 52 based on the peripheral thickness of the other three sides, the LCD panel will experience greater pressure on the splicing edge, resulting in severe peripheral yellowing on the other three sides. If the size of the support 52 is selected based on the thickness of the splicing edge, the other three sides will experience peripheral problems due to insufficient support.

[0057] Based on this, the present disclosure provides a display panel. For example... Figures 3 to 16 As shown, the display panel has a display area 100 and a non-display area 200 located around the display area 100. The display panel also includes a substrate 1, a liquid crystal layer 34, an encapsulation substrate 4, a support portion 37, and a sealant 5. The liquid crystal layer 34 is disposed on one side of the substrate 1 and is located in the display area 100. The encapsulation substrate 4 is disposed on the side of the liquid crystal layer 34 away from the substrate 1. The support portion 37 is disposed on the side of the encapsulation substrate 4 or the 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 disposed on the side of the encapsulation substrate 4 close to the liquid crystal layer 34, the sealant 5 is disposed between the support portion 37 and the substrate 1. When the support portion 37 is disposed on the side of the substrate 1 close to the liquid crystal layer 34, the sealant 5 is disposed between the support portion 37 and the encapsulation substrate 4.

[0058] In the non-display area 200, a support portion 37 is provided on the side of the encapsulation substrate 4 or the substrate 1 near the liquid crystal layer 34. When the support portion 37 is located on the side of the encapsulation substrate 4 near the liquid crystal layer 34, the sealant 5 is disposed between the support portion 37 and the substrate 1. When the support portion 37 is located on the side of the substrate 1 near the liquid crystal layer 34, the sealant 5 is disposed between the support portion 37 and the encapsulation substrate 4. This reduces the vertical space for the sealant 5 coating, allowing for a wider sealant 5 width with the same amount of adhesive applied. Alternatively, with the same sealant width, the amount of encapsulation adhesive used can be significantly reduced, ensuring the cell thickness around the perimeter of medium and large-sized liquid crystal display panels without affecting the image quality.

[0059] The display panel involved in the embodiments of this disclosure will be described in detail below with reference to specific examples.

[0060] like Figure 3 As shown, the display panel may include a substrate 1, a driving circuit layer 2, a pixel layer 3 and an encapsulation substrate 4 stacked in sequence. A buffer layer 7 is provided on one side of the substrate 1. The driving circuit layer 2 is provided on the side of the buffer layer 7 away from the substrate 1. The pixel layer 3 is provided on the side of the driving circuit layer 2 away from the substrate 1. The encapsulation substrate 4 is provided on the side of the pixel layer 3 away from the substrate 1.

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

[0062] In another embodiment of this disclosure, the substrate 1 may be made of polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyethersulfone (PES), polyimide, polyamide, polyacetal, polycarbonate (PC), polyethylene terephthalate (PEM), polyethylene naphthalate (PEN), or a combination thereof.

[0063] In another embodiment of this 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 materials. For example, in one embodiment of this disclosure, the substrate 1 may include a bottom film layer, a pressure-sensitive adhesive layer, a first polyimide layer and a second polyimide layer stacked sequentially.

[0064] 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 top-gate thin-film transistors, bottom-gate thin-film transistors, or dual-gate thin-film transistors. The active layer 21 can be made of amorphous silicon semiconductor material, low-temperature polycrystalline silicon semiconductor material, metal oxide semiconductor material, organic semiconductor material, or other types of semiconductor material; the thin-film transistor 20 can be an N-type thin-film transistor or a P-type thin-film transistor.

[0065] A driving transistor may have a first terminal, a second terminal, and a control terminal. One of the first and second terminals can be the source 252 of the driving transistor, and the other can be the drain 253 of the driving transistor. The control terminal can be the gate 232 of the driving transistor. It can be understood that the source 252 and drain 253 of the driving transistor are two relative concepts that can be interchanged; when the operating state of the driving transistor changes, such as when the current direction changes, the source 252 and drain 253 of the driving transistor can be interchanged.

[0066] In this disclosure, the driving circuit layer 2 may include a transistor layer and a first conductive layer 25 sequentially stacked on the substrate 1. The transistor layer contains an active portion 210 and a gate 232 of a transistor. Optionally, the transistor layer may include a gate layer 23, a gate insulating layer 22, and an active layer 21 stacked between the substrate 1 and the interlayer dielectric layer 24.

[0067] The positional relationship of each film layer can be determined based on the film layer structure of the thin-film transistor 20. In this 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 substrate 1, thereby forming a bottom-gate thin-film transistor 20.

[0068] The gate layer 23 can be used to form the gate, gate drive line, and clock signal line 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 characteristics, while the semiconductor materials of the source and drain regions are partially or completely conductive. It can also be used to form the 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 traces 251, power traces, and other traces.

[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 substrate 1. An active layer 21 is disposed on the side of the gate insulating layer 22 away from the substrate 1. A first conductive layer may include a source 252 and a drain 253. The source 252 and drain 253 may be directly formed on the side of the active layer 21 away from the substrate 1. The source 252 overlaps with the source region of the active layer 21, and the drain 253 overlaps with the drain region of the active layer 21. In the non-display area 200, the gate layer 23 includes scan signal lines 234 and multiple clock signal lines 231 arranged sequentially along 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 substrate 1.

[0070] 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 side of the source electrode 252, drain electrode 253, and gate insulating layer 2222 away from the substrate 1. The orthographic projection of the interlayer dielectric layer 24 onto the substrate 1 covers the display area 100 and the non-display area 200. The planarization layer 26 may be disposed on the side of the interlayer dielectric layer 24 away from the substrate 1. The orthographic projection of the planarization layer 26 onto the substrate 1 covers only the display area 100 and the non-display area 200. The surface of the planarization layer 26 away from the substrate 1 is planar. Depending on the situation, the planarization layer 26 may be one or more layers.

[0071] The display panel also includes a pixel layer 3, which is disposed on the side of the driving circuit layer 2 away from the 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 substrate 1, and may include a pixel electrode 311. The pixel electrode 311 is connected to the source electrode 252 through a via. The protective layer 32 covers the pixel electrode 311 and the planarization layer 26. The protective layer 32 is disposed on the side of the second conductive layer 31 away from the substrate 1, and covers the second conductive layer 31 and the planarization layer 26. The third conductive layer 33 is disposed on the side of the protective layer 32 away from the substrate 1, and may include a common electrode 331. The liquid crystal layer 34 is disposed on the side of the third conductive layer 33 away from the substrate 1, and typically includes an alignment layer spaced apart. Figure 3 (Not shown in the diagram) and liquid crystal, with the liquid crystal filling the spaces between the alignment layers. The third conductive layer 33 may also include a reference signal line 332, which is connected to the transition portion 233 provided on the gate layer 23 via a via.

[0072] Both the pixel electrode 311 and the common electrode 331 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 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 receives a switching signal, and the active portion 210 of the thin-film transistor 20 is conductive. The data signal can travel 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 be input to the pixel electrode 311 from the drain 253. The common electrode 331 receives 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 rotation of liquid crystal molecules. The electric field changes the transmittance of the liquid crystal molecules, thereby realizing the display of different images.

[0073] like Figure 4 As shown, the non-display area 200 includes a virtual pixel area 2001 and a border area 2002 sequentially arranged in a direction away from the display area 100. To improve the anti-peeling performance between display panel layers, the orthogonal projection of the planarization layer 26 on the substrate 1 only covers the display area 100 and the virtual 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 of the border area 2002.

[0074] A packaging substrate 4 is provided on the side of the liquid crystal layer 34 away from the substrate 1. A black matrix 35 is provided on the side of the packaging substrate 4 close to the substrate 1. The black matrix 35 is located on the side of the packaging substrate 4 close to the 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. Multiple openings 351 are provided in the part of the black matrix 35 located in the display area 100 and the virtual pixel area 2001.

[0075] The light filtering section 36 includes a first light filtering unit 361, a second light filtering unit 362, and a third light filtering unit 363. The first light filtering unit 361, the second light filtering unit 362, and the third light filtering unit 363 are respectively disposed within a plurality of openings 351. The first light filtering unit 361 is red, the second light filtering unit 362 is green, and the third light filtering unit 363 is blue. The light filtering section 36 is disposed on the side of the packaging substrate 4 near the substrate 1.

[0076] like Figure 4 As shown, a support portion 37 is provided on the side of the black matrix 35 in the border area 2002 away from the packaging substrate 4. The support portion 37 is disposed in the same layer and with the same material as a color filter unit in the filter portion 36. The support portion 37 can be disposed in the same layer and with the same material as the third filter unit 363. The support portion 37 can also be disposed in the same layer and with 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 disposed parallel to the edge of the packaging substrate 4.

[0077] like Figure 5 As shown, the support 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. Sub-support portions of the same color are disposed in the same layer and with the same material as sub-filter units of the same color. The thickness of at least the three sub-support portions of different colors is equal.

[0078] A sealing adhesive 5 is provided between the support portion 37 and the protective layer 32. The orthographic projection of the sealing adhesive 5 on the substrate 1 is located within the orthographic projection of the support portion 37 on the substrate 1. The support portion 37 reduces the vertical space for coating the sealing adhesive 5. Under the premise of the same amount of adhesive applied, a wider sealing adhesive 5 can be achieved. Alternatively, with the same adhesive width, the amount of encapsulating adhesive used can be greatly reduced, ensuring that the cell thickness around the medium and large-sized liquid crystal display panels does not affect the image quality of the displayed image.

[0079] On the substrate 1 side, the sealing adhesive 5 must either not cover the clock signal line 231 or fully cover the clock signal line 231. Partial coverage of the clock signal line will cause coupling, resulting in horizontal stripes on the display screen. Figure 6As shown, when the sealing adhesive 5 does not cover the clock signal line 231, the sealing adhesive 5 can at most cover the scan signal line 234 closest to the display area 100. Figure 7 As shown, when the sealing adhesive 5 covers the clock signal line 231, the sealing adhesive 5 covers the scan signal line 234 and all the clock signal lines 231.

[0080] Whether the sealing adhesive 5 covers all the clock signal lines 231 depends on the width of the sealing adhesive 5 and the distance between the sealing adhesive 5 and the clock signal lines 231. For small and medium-sized display panels, the width of the sealing adhesive 5 is only about 1mm, and the distance between the sealing adhesive 5 and the clock signal lines 231 is relatively far, so the sealing adhesive 5 may not cover the clock signal lines 231.

[0081] The support portion 37 may include three types of 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 substrate 1 do not overlap. Sub-support portions of the same color are arranged in the same layer and with the same 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 the same, the support portion 37 can be used as the base for the sealing adhesive 5.

[0082] When the thicknesses of the first filter unit 361, the second filter unit 362, and the third filter unit 363 are inconsistent—for example, to improve the transmittance of the filter section 36, the thickness of the second filter unit 362 is less than the thicknesses of the first filter unit 361 and the third filter unit 363—this will cause the surface of the support section 37 to be relatively uneven, resulting in uneven support force provided by the sealing adhesive 5. To ensure the flatness of the support section 37, the support section 37 and the filter units of the same color in the filter section 36 are usually disposed in the same layer and made of the same material.

[0083] like Figure 8 As shown, to achieve height adjustment of the sealing adhesive 5, the thickness of the support portion 37 can be increased. The support portion 37 can include two sub-support portions of different colors stacked together. The orthographic projections of the support portions of different colors on the substrate 1 overlap. The sub-support portions of the same color are disposed in the same layer and with the same material as the sub-filter units of the same color. Alternatively, the two sub-support portions can be disposed in the same layer and with the same 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 disposed in the same layer and with the same 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.

[0084] For display panels where the bezel area 2002 does not have a planarization layer 26, the support portion 37 located on the side of the black matrix 35 in the bezel area 2002 away from the encapsulation substrate 4 can be considered as including two sub-support portions of different colors if 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, and is disposed on the same layer and with the same material as the color filter unit of one color in the filter portion 36.

[0085] like Figure 9 As shown, when the support portion 37 includes sub-support portions of two colors stacked together, light shielding of the bezel area 2002 of the display panel can be achieved through the support portion. Specifically, the black matrix 35 is removed from the bezel area 2002, and the orthogonal projection of the light filter portion 36 on the encapsulation substrate 4 covers only the display area 100 and the virtual pixel area 2001, thus expanding the coverage area of ​​the support portion 37. The orthogonal projection of the support portion 37 on the substrate 1 covers the bezel area 2002. By overlapping sub-support portions of different colors, most visible light can be filtered out.

[0086] The display panel also includes columnar spacer portions 6, which include main columnar spacer pillars 61 and secondary columnar spacer pillars 62. The height of the main columnar spacer pillar 61 is higher than the height of the secondary columnar spacer pillar 62. The main and secondary spacer pillars located in the display area 100 are disposed on the side of the filter unit away from the encapsulation substrate 4, while the main and secondary columnar spacer pillars 61 and 62 located in the non-display area 200 are respectively disposed on the side of the black matrix 35 away from the first substrate 1. The end of the columnar spacer portion 6 in the display area 100 away from the substrate 1 abuts against the thin-film transistor 20, and the end of the columnar spacer portion 6 in the non-display area 200 away from the substrate 1 abuts against the data trace 251, thus maintaining the cell thickness of the liquid crystal display panel.

[0087] like Figure 10 As shown, for the single-layer support portion 37, the support portion 37 can be disposed in the same layer and with the same material as the spacer portion, and the thickness of the support portion 37 can be greater than or equal to the thickness of any color filter unit. For example... Figure 11 As shown, the support part 37 with a double-layer structure includes a first sub-support part 371 and a second sub-support part 373. The first sub-support part 371 is disposed in the same layer and with the same material as the filter unit of one color in the filter part 36, and the second sub-support part 373 is disposed in the same layer and with the same material as the columnar septum part 6.

[0088] like Figure 12As shown, for display panels where the planarization layer 26 is not provided in the bezel area 2002, the filter portion 36 can also be provided on the side of the substrate 1 near the encapsulation substrate 4. Specifically, the filter portion 36 is provided on the side of the planarization layer 26 away from the substrate 1, and the pixel electrode 311 is formed on the side of the filter portion 36 away from the substrate 1. The protective layer 32 and the common electrode 331 are provided in the same manner as... Figures 3 to 11 The same can be used, and will not be repeated here. The filter section 36 includes a first filter unit, a second filter unit, and a third filter unit. The black matrix 35 is disposed on the side of the packaging substrate 4 near the substrate 1. The portion of the black matrix 35 located in the display area 100 has multiple openings 351. The orthographic projection of the filter unit on the packaging substrate 4 is located within the openings 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 can be disposed on the side of the array substrate close to the packaging substrate 4. Specifically, the support portion 37 can be disposed in the area of ​​the interlayer dielectric layer 24 in the border region 2002 that is not covered by the planarization layer 26. Figure 13 As shown, for the support portion 37 with a double-layer structure, the first sub-support portion 371 can be disposed on the side of the interlayer dielectric layer 24 away from the substrate 1, and the second sub-support portion 373 can be disposed on the side of the first sub-support portion 371 away from the substrate 1.

[0090] like Figure 14 and Figure 15 As shown, the first sub-support portion 371 can also be disposed on the side of the substrate 1 near the packaging substrate 4, and the second sub-support portion 373 can be disposed on the side of the packaging substrate 4 near the substrate 1. Figure 14 As shown, the first sub-support 371 and the filter unit of one color in the filter section 36 are disposed on the same layer and made of the same material, and the second sub-support 373 and the columnar septum section 6 are disposed on the same layer and made of the same material. Figure 15 As shown, the first sub-support 371 is disposed on the same layer and with the same material as the filter unit of one color in the filter unit 36, and the second sub-support 373 is disposed on the same layer and with the same material as the filter unit of another color in the filter unit 36.

[0091] Figure 16 This is a planar schematic diagram of a display panel without a planarization layer. 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. The pixel electrode is connected to the source electrode through a via. The layers above the pixel electrode are... Figure 2 They are basically the same, so I will not go into details here.

[0092] A support portion 37 is provided on the side of the black matrix 35 in the border area 2002 away from the packaging substrate 4. The support portion 37 is disposed in the same layer and with the same material as a color filter unit in the filter portion 36. The support portion 37 can be disposed in the same layer and with the same material as the third filter unit 363. The support portion 37 can also be disposed in the same layer and with 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 disposed parallel to the edge of the packaging substrate 4. A sealing adhesive 5 is provided between the support portion 37 and the interlayer dielectric layer, and the orthographic projection of the sealing adhesive 5 on the substrate 1 is located within the orthographic projection of the support portion 37 on the substrate 1.

[0093] like Figure 3 and Figure 16 As shown, for display panels with a relatively small thickness of the liquid crystal layer 34 (thickness of the liquid crystal layer 34 ≤ 2.4 μm), the minimum size of the existing support 52 is usually greater than or equal to 2.25 μm. The thickness of the sealant 5 is calculated using formula 2) below. When the cell thickness is 2.4 μm, the thickness of the sealant 5 is less than or equal to 1 μm. When the thickness of the sealant 5 is less than or equal to 1 mm, the sealant 5 consists of the adhesive body 51, and the support 52 in the adhesive body 51 can be eliminated. When the thickness of the sealant 5 is greater than 1 mm, the sealant 5 includes the adhesive body 51 and the support 52 mixed in the adhesive body 51.

[0094] When the display panel is not equipped with support part 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 equipped with support part 37:

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

[0098] In formulas 1) and 2), T represents the thickness of the sealing adhesive 5. CG T represents the thickness of the liquid crystal layer 34. R T represents the thickness of the filter section 36. ITO1 T is the thickness of the second conductive layer 31. ITO2T is the thickness of the third conductive layer 33. PI T represents the thickness of the alignment film. BM For a black matrix of thickness 35, T G The thickness of gate layer 23 is given.

[0099] When calculating the thickness of the sealing adhesive 5, Figure 4 The display panel in Figure 2 Compared to the display panel in the previous version, the thickness of the sealant 5 is reduced by the thickness of the light filter 36. For display panels where the bezel area 2002 does not have a planarization layer 26 and the liquid crystal layer 34 is relatively thin, when the ratio of the thickness of the sealant 5 to the thickness of the liquid crystal layer 34 is less than 1, or when the thickness of the sealant 5 is less than or equal to 1 mm, it can be considered as using... Figure 16 The structure in the middle; for display panels where the bezel area 2002 has a planarization layer 26 and the liquid crystal layer 34 has a small thickness, 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 considered as using Figure 4 The structure in the image. For display panels with a relatively small thickness of the bezel area 2002 having a planarization layer 26 and a liquid crystal layer 34, when the ratio of the thickness of the sealant 5 to the thickness of the planarization layer 26 is less than 2.5, it can also be considered as using... Figure 4 The structure in.

[0100] like Figure 17 As shown, for a splicing display screen, the two liquid crystal display panels can be polygonal in shape; however, this description assumes both liquid crystal display panels are rectangular. The non-display area 200 includes a virtual pixel area 2001 and a border area 2002 arranged sequentially away from the display area 100. The border area 2002 at the splicing edge of the display panels is cut off at the location of the baseline E. Sealing adhesive 5 is applied to the filter unit of the display area 100, and can also be applied to the filter unit of the virtual pixel area 2001. Support portions 37 are provided on the border areas 2002 on the other three sides of the display panel. Sealing adhesive 5 is disposed between the support portions 37 and the interlayer dielectric layer of the border area 2002. A gate driving area is typically provided between the virtual pixel area 2001 and the border area 2002. Multiple GOA units (gate driving circuits) are provided in the gate driving area; therefore, the sealing adhesive 5 on the other three sides is spaced apart from the filter portion 36.

[0101] In this way, for ultra-large LCD panels, the sealing adhesive 5 can achieve its maximum width, improving peripheral pressure resistance and reducing the risk of light leakage at the edges. For medium-to-large-sized irregularly shaped LCD panels, the amount of adhesive applied can be reduced, increasing the application precision while achieving a larger width for the sealing adhesive 5, thus reducing the risk of adhesive overflow. For LCD panels with low cell thickness, the support 52 in the frame adhesive can be eliminated, eliminating the need to match the cell thickness of the support 52 with that of the display area 100. For LCD panels with the planarization layer 26 of the frame area 2002 removed, the cell thickness of the support 52 and the display area 100 can be better matched; for splicing displays, the cell thickness around the perimeter can be ensured, guaranteeing the display quality of the splicing display. This ensures the peripheral image quality of various types of LCD panels.

[0102] The above is only Figure 16 This illustrates one configuration where the support portion is disposed on the liquid crystal display panel without planarization layer 26. Figures 4 to 15 The configuration of the support portion can also be applied to liquid crystal display panels without a planarization layer 26. It is understood that this disclosure applies to liquid crystal display panels without a planarization layer 26, liquid crystal display panels with a planarization layer 26, and liquid crystal display panels where the portion of the planarization layer in the bezel area 2002 has been removed. The configuration of the support portion is not limited to the display panel structures listed above; it can be applied to the edges of other types of display panels. This includes all display modes, not limited to horizontal edge field display modes, but also other display modes, which will not be listed here.

[0103] It should be noted that, regardless of the method used Figures 3 to 17 Which type of display panel is being used, and the width of the support portion 37 is as shown in the following formula:

[0104] W≥W1+W2+W3 3);

[0105] In Formula 3), W is the width of the sealing adhesive 5, W2 is the adhesive application accuracy, and W3 is the overflow accuracy. The size of W2 is generally 0.1mm, and W3 is usually 20% of W2. The overflow accuracy of the sealing adhesive 5 is the same on both sides, so the overflow accuracy on one side is 10%.

[0106] This disclosure also provides a display device. This display device may include the display panel mentioned in any of the above embodiments. The specific structure and beneficial effects of the display panel have been described in detail above, and therefore 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 parts, such as circuit boards, power cords, etc. Those skilled in the art can make corresponding additions according to the specific usage requirements of the display device, which will not be elaborated here.

[0108] Display devices can be traditional electronic devices, such as mobile phones, computers, televisions, projectors, and video recorders, or emerging wearable devices, such as VR wearable devices, which will not be listed here.

[0109] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A display panel having a display area and a non-display area located around the periphery of the display area, wherein, The display panel also includes: Substrate; A liquid crystal layer is disposed on one side of the substrate and located in the display area; An encapsulation substrate is disposed on the side of the liquid crystal layer away from the substrate. A support portion is disposed on the side of the encapsulation substrate or the substrate near the liquid crystal layer, and the support portion is located in the non-display area; The sealing adhesive is provided between the support portion and the substrate when the support portion is located on the side of the encapsulation substrate near the liquid crystal layer; and between the support portion and the encapsulation substrate when the support portion is located on the side of the substrate substrate near the liquid crystal layer. A driving circuit layer is disposed between the substrate and the liquid crystal layer. The driving circuit layer includes a gate layer. The gate layer includes scan signal lines arranged sequentially along a direction away from the display area and multiple clock signal lines arranged at intervals. The encapsulant either does not cover the clock signal lines or fully covers the clock signal lines. The display panel further includes a light filter located between the substrate and the encapsulation substrate. The non-display area includes a virtual pixel area and a border area arranged sequentially away from the display area. The light filter is disposed in the display area and the virtual pixel area. The support is disposed in the border area. Sealing adhesive on at least a portion of the edges of the display panel is spaced apart from the light filter. The orthographic projection of the light filter on the encapsulation substrate covers the display area. The orthographic projection of the support on the substrate covers the border area. The ratio of the thickness of the sealing adhesive to the thickness of the liquid crystal layer is less than 1. The display panel is polygonal. The display panel includes splicing edges that are spliced ​​with other display panels and non-sponge edges that are not spliced ​​with other display panels. Sealing adhesive on the splicing edges is disposed on the light filter. Sealing adhesive on the non-sponge edges is disposed on the support.

2. The display panel according to claim 1, wherein, The orthographic projection of the sealing adhesive on the substrate is located within the orthographic projection of the support portion on the substrate.

3. The display panel according to claim 1, wherein, The display panel further includes a black matrix located between the substrate and the encapsulation substrate. The portion of the black matrix located in the display area has multiple openings. The filter section includes at least three different color filter units, and the orthographic projection of the filter unit on the encapsulation substrate is located within the openings.

4. The display panel according to claim 3, wherein, The support portion includes at least three sub-support portions of different colors. The orthographic projections of the sub-support portions of different colors on the substrate do not overlap at least partially. The sub-support portions of the same color are disposed in the same layer and made of the same material as the filter unit of the same color. The thickness of the at least three sub-support portions of different colors is equal.

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

6. The display panel according to claim 3, wherein, The support portion includes at least two sub-support portions of different colors stacked together. The orthographic projections of the support portions of different colors on the substrate overlap. The sub-support portions of the same color are disposed in the same layer and made of the same material as the filter unit of the same color.

7. The display panel according to claim 1, wherein, The display panel further includes an organic film disposed on the side of the substrate close to the liquid crystal layer. The orthographic projection of the organic film on the substrate does not overlap with the orthographic projection of the sealant on the substrate, and the ratio of the thickness of the sealant to the thickness of the liquid crystal layer is less than 1.

8. The display panel according to claim 1, wherein, When the thickness of the sealing adhesive is less than or equal to 1 mm, the sealing adhesive consists of an adhesive body. When the thickness of the sealing adhesive is greater than 1 mm, the sealing adhesive includes an adhesive body and a support mixed in the adhesive body.

9. The display panel according to claim 7, wherein, The ratio of the thickness of the sealing adhesive to the thickness of the organic film is less than 2.

5.

10. The display panel according to claim 3, wherein, The black matrix is ​​disposed on the side of the packaging substrate close to the substrate, and the filter portion is disposed on the side of the substrate close to the packaging substrate.

11. The display panel according to claim 3, wherein, Both the black matrix and the filter are located on the side of the packaging substrate close to the substrate.

12. The display panel according to claim 3, wherein, The display panel further includes a columnar spacer portion, which is disposed on the side of the filter portion and the black matrix away from the encapsulation substrate, and the support portion is disposed on the same layer and material as the columnar spacer portion.

13. The display panel according to claim 12, wherein, The thickness of the support portion is greater than the thickness of the filter unit of any color.

14. The display panel according to claim 3, wherein, The display panel further includes a columnar spacer portion, which is disposed on the side of the filter portion and the black matrix away from the encapsulation substrate. The support portion includes a first sub-support portion and a second sub-support portion. The first sub-support portion is disposed on the same layer and made of the same material as the filter unit of one color in the filter portion, and the second sub-support portion is disposed on the same layer and made of the same material as the columnar spacer portion.

15. The display panel according to claim 14, wherein, The first sub-support portion is disposed on the side of the substrate close to the packaging substrate, and the second sub-support portion is disposed on the side of the packaging substrate close to the substrate.

16. A display device, wherein, Includes the display panel as described in any one of claims 1 to 15.

Images