Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. According to the display panel, the black matrix layer is provided with the groove in the non-pixel area, and the color resistance layer is arranged in the groove, so that when the color resistance is formed, even if the color resistance overflows, the color resistance can overflow into the groove and does not overflow into other color resistance areas, the risk of color mixing when the color resistance is formed through ink-jet printing is reduced, and the quality of the color resistance is improved. The risk that ink forming one color resistor overflows to the setting areas of other color resistors is low, the selection range of the contact angle of the color resistor and the black matrix layer is wide, the development difficulty of color resistor materials is lowered, the situation that the middle area of the color resistor protrudes too high is avoided, and the optical performance of the display panel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] OLED (Organic Light-Emitting Diode) display devices are widely used due to their self-luminous, wide color gamut, low power consumption, and flexible display. In order to solve the problem of large thickness of the polarizing plate, the existing OLED display device absorbs the outgoing light of the OLED display device, resulting in low light efficiency and high power consumption. A Pol Less Panel (PLP) technology is proposed, which replaces the polarizing plate with a black matrix and color resistance to reduce external reflected light and improve the light transmittance of the OLED display device. In order to reduce the cost, the color resistance is formed by inkjet printing, but the black matrix still uses photolithography technology, so the thickness of the black matrix is small. When the color resistance is formed by inkjet printing later, it is easy to cause color resistance overflow and color mixing, and further cause display abnormalities.

[0003] Therefore, the existing OLED display device has the technical problem of inkjet printing color resistance overflow to other color resistance areas causing color mixing and display abnormalities. SUMMARY

[0004] The embodiments of the present application provide a display panel and a display device to solve the technical problem of inkjet printing color resistance overflow to other color resistance areas causing color mixing and display abnormalities in the existing OLED display device.

[0005] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a display panel is provided, the display panel comprises a display area, the display area comprises a pixel area and a non-pixel area, and the display panel comprises: a substrate; a black matrix layer disposed on one side of the substrate, the black matrix layer being provided with an opening in the pixel area; a color resistance layer disposed on the side of the black matrix layer away from the substrate, a part of the color resistance layer being disposed in the opening; wherein the black matrix layer is provided with a groove in the non-pixel area, and another part of the color resistance layer is disposed in the groove.

[0006] According to the second aspect of the present application, a display device is provided, which comprises the display panel according to any one of the above-mentioned embodiments.

[0007] The display panel and the display device are provided in the embodiments of the present application. The display panel is provided with a groove in the black matrix layer in the non-pixel area, and the color resistance layer is arranged in the groove. When the color resistance layer is formed, even if the color resistance layer overflows, the color resistance layer can overflow into the groove and cannot overflow into other color resistance areas, so that the risk of color mixing when the color resistance layer is formed by inkjet printing is reduced. In addition, the risk of the ink for forming the color resistance layer overflowing into the arrangement area of other color resistance layers is low, the selection range of the contact angle between the color resistance layer and the black matrix layer is wide, the development difficulty of the color resistance material is reduced, the middle area of the color resistance layer is prevented from being too high, and the optical performance of the display panel is improved.

[0008] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0009] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0010] Figure 1 The schematic diagram of the comparative display device provided in the embodiments of the present application is shown.

[0011] Figure 2 The plan view of the display panel provided in the embodiments of the present application is shown.

[0012] Figure 3 The first plan view of the black matrix layer and the first overlay view of the black matrix layer and the color resistance layer provided in the embodiments of the present application are shown.

[0013] Figure 4 The first cross-sectional schematic view of the display panel provided in the embodiments of the present application is shown.

[0014] Figure 5 The second cross-sectional schematic view of the display panel provided in the embodiments of the present application is shown.

[0015] Figure 6 The third cross-sectional schematic view of the display panel provided in the embodiments of the present application is shown.

[0016] Figure 7 The second plan view of the black matrix layer and the second overlay view of the black matrix layer and the color resistance layer provided in the embodiments of the present application are shown.

[0017] Figure 8This is a fourth cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0018] Figure 9 This is a fifth cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0019] Figure 10 The third plan view of the black matrix layer and the third stacking view of the black matrix layer and the color resist layer are provided for embodiments of this application.

[0020] Figure 11 This is a sixth cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0021] Figure 12 The fourth planar view of the black matrix layer and the fourth stacked view of the black matrix layer and the color resist layer are provided for embodiments of this application.

[0022] Figure 13 This is a seventh cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0023] Figure 14 This is an eighth cross-sectional schematic diagram of the display panel provided in an embodiment of this application.

[0024] Figure 15 A comparison diagram of two processes for forming a display panel provided in the embodiments of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0026] To illustrate the principle behind the technical problems addressed in the embodiments of this application, some comparative display devices are provided. It should be understood that these comparative display devices are not considered prior art in the embodiments of this application. Figure 1 As shown, the contrast display device includes a substrate 11, a black matrix 12, a red color resist 131, a green color resist 132, a blue color resist 133, and a planarization film 14. In order to reduce costs during the formation of the contrast display device, as shown... Figure 1As shown, ink is sprayed onto the substrate 11 using a printhead 15 to form various color resists, while the black matrix 12 is still formed using photolithography. This results in a relatively low thickness for the black matrix 12. During inkjet printing of the color resists, ink easily overflows from the black matrix 12 into other color resist areas, causing color mixing and affecting the film morphology and thickness of some color resists. Furthermore, to accommodate more ink in the openings of the black matrix, the contact angle between the color resist and the black matrix 12 needs to be increased. This increases the difficulty of developing color resist materials and can lead to excessively high bulges in the central area after color resist film formation, affecting optical performance. Therefore, existing OLED display devices suffer from the technical problem of inkjet-printed color resist overflowing into other color resist areas, causing color mixing and display abnormalities.

[0027] This application provides a display panel and a display device to address the aforementioned technical problems.

[0028] Figure 2 A plan view of the display panel provided in an embodiment of this application. Figure 3 The first plan view of the black matrix layer and the first stacked view of the black matrix layer and the color resist layer are provided for embodiments of this application. Figure 4 This is a first cross-sectional schematic diagram of a display panel provided in an embodiment of this application. Figure 5 This is a second cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 6 This is a third cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 7 The second plan view of the black matrix layer and the second stacked view of the black matrix layer and the color resist layer are provided for embodiments of this application. Figure 8 This is a fourth cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 9 This is a fifth cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 10 The third plan view of the black matrix layer and the third stacking view of the black matrix layer and the color resist layer are provided for embodiments of this application. Figure 11 This is a sixth cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 12 The fourth planar view of the black matrix layer and the fourth stacked view of the black matrix layer and the color resist layer are provided for embodiments of this application. Figure 13 This is a seventh cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 14 This is an eighth cross-sectional schematic diagram of the display panel provided in an embodiment of this application. Figure 15 A comparison diagram of two processes for forming a display panel provided in the embodiments of this application.

[0029] like Figure 2As shown, this application embodiment provides a display panel 2, which includes a display area 201 and a non-display area 202. The non-display area 202 can be arranged around the display area 201. The non-display area 202 includes a left border area, a right border area, a top border area and a bottom border area arranged around the display area 201. Gate driving circuits can be arranged in the left border area and the right border area. Fan-out lines and bonding terminals can be arranged in the bottom border area, and a driving chip can be bonded in the bottom border area.

[0030] Specifically, Figure 2 The non-display area 202 shown in the figure is arranged around the display area 201, but the embodiments of this application are not limited to this. The non-display area 202 can be arranged on one side, two sides or three sides of the display area 201. In order to achieve a full screen, some display panels 2 will bend the non-display area 202 to the back side of the display panel 2 or arrange it on the back side of the display panel 2. In this case, the front side of the display panel 2 may not have the non-display area 202.

[0031] Specifically, such as Figure 2 As shown, the display area 201 includes a pixel area 21 and a non-pixel area 22. The pixel area 21 is the area used for emitting light, and the non-pixel area 22 is the area located between the pixel areas 21. A driving circuit can be set in the non-pixel area 22.

[0032] Specifically, it is understood that when forming the display panel 2, considering the propagation of light and the influence of viewing angle, the size of the opening of the pixel definition layer 332 and the opening of the corresponding black matrix layer 36 may be the same or different. Therefore, the area referred to by the pixel area 21 can be the setting area of ​​the opening of the pixel definition layer 332 in the black matrix layer 36, or it can be the setting area of ​​the opening of the pixel definition layer 332. This application embodiment does not limit this, but only limits the pixel area 21 to be the area of ​​the display panel 2 that emits light. The specific size and definition can be determined according to the actual design, while the non-pixel area 22 is the area located between the pixel areas 21.

[0033] like Figures 2 to 14 As shown in the figure, this application embodiment provides a display panel 2, which includes a display area 201, the display area 201 including a pixel area 21 and a non-pixel area 22, the display panel 2 including a substrate 31, a black matrix layer 36 and a color resist layer 37; the black matrix layer 36 is disposed on one side of the substrate 31, and the black matrix layer 36 has an opening 361 in the pixel area 21; the color resist layer 37 is disposed on the side of the black matrix layer 36 away from the substrate 31, and a portion of the color resist layer 37 is disposed within the opening 361; The black matrix layer 36 has a groove 362 in the non-pixel area 22, and another part of the color resist layer 37 is disposed in the groove 362.

[0034] This application provides a display panel in which a black matrix layer 36 has a groove 362 in the non-pixel area 22, and a color resist layer 37 is disposed in the groove 362. This allows the color resist to overflow into the groove during its formation, even if overflow occurs, instead of overflowing into other color resist areas. This reduces the risk of color mixing during inkjet printing. Furthermore, since the risk of ink overflowing from one color resist into other color resist areas is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the difficulty of developing color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0035] Specifically, it can be understood that when inkjet printing is used to form the color resist layer 37, the black matrix layer 36 is formed by photolithography and has a relatively small thickness. The minimum volume of the opening of the black matrix layer 36 is 2.4 cubic micrometers, while the volume of ink droplets from inkjet printing is generally 2.4 cubic micrometers to 3.5 cubic micrometers. This means that the volume of ink droplets from inkjet printing may be larger than the volume of the opening, and the ink droplets will overflow from the opening 361 of the black matrix layer 36. This causes the ink droplets to flow into the adjacent color resist setting area, resulting in color mixing. However, in this embodiment, by providing a groove 362 in the non-pixel area 22 of the black matrix layer 36, even if the volume of the ink droplet is larger than the volume of the opening, the groove 362 has a certain volume to accommodate the overflowing ink droplets, and the groove can also impede the flow of ink droplets, thereby reducing the risk of color mixing when inkjet printing forms the color resist.

[0036] Specifically, it is understandable that, in order to prevent overflow, comparative display devices would increase the contact angle of the black matrix layer 36 and the inkjet-printed color resist. However, this would limit the performance of the color resist material and the black matrix layer material, leading to greater difficulty in material development and increased costs. In contrast, the embodiments of this application, by setting the groove 362 to accommodate the ink forming the color resist and to block the overflow of the ink forming the color resist, do not require controlling the contact angle of the black matrix layer 36 and the color resist layer 37. This results in a wider selection of materials for the black matrix layer 36 and the color resist layer 37, reducing the difficulty of material development and lowering costs.

[0037] Specifically, it is understandable that, in order to prevent overflow, the contact angle between the black matrix layer 36 and the inkjet-printed color resist in a comparative display device is increased. This results in a higher bulge in the middle area of ​​the final color resist, and the morphology of the color resist will affect the light efficiency of the display panel. However, in this embodiment, by setting a groove 362 to accommodate the ink forming the color resist and to block the overflow of the ink forming the color resist, the contact angle between the black matrix layer 36 and the color resist layer 37 can be controlled, so that the height difference between the middle area and the edge area of ​​the color resist is relatively small, thereby changing the morphology of the color resist and improving the optical performance of the display panel.

[0038] In some embodiments, such as Figure 3 , Figure 7 As shown, the pixel area 21 includes multiple sub-pixel areas (e.g., the first sub-pixel area 211). Each sub-pixel area is surrounded by a groove 362. By setting a groove 362 around the sub-pixel area, when inkjet printing is performed to form a color resist in the opening of the black matrix layer 36, even if ink overflows, it will overflow into the groove 362 and will not overflow into the area where other color resists are set. This reduces the risk of color mixing when inkjet printing forms color resists. Since the risk of ink forming one color resist overflowing into the area where other color resists are set is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids the color resist from protruding too much in the middle area, thus improving the optical performance of the display panel.

[0039] Specifically, such as Figure 3 , Figure 7 As shown, Figure 3 Image (a) shows a planar view of the black matrix layer 36. Figure 3 (b) in the middle shows Figure 3 (a) is a plan view of the stacked black matrix layer 36 and color resist layer 37. Figure 7 (a) shows another planar view of the black matrix layer 36. Figure 7 (b) in the middle shows Figure 7 Plan view of the stacked black matrix layer 36 and color resist layer 37 in (a). Figure 3 (a) and Figure 7 As shown in (a), pixel area 21 includes a first sub-pixel area 211, a second sub-pixel area 212, and a third sub-pixel area 213. The opening 361 of the black matrix layer 36 includes a first opening 361a, a second opening 361b, and a third opening 361c corresponding to the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213, respectively. In the non-pixel area 22, the groove 362 of the black matrix layer 36 includes a first groove 362a, a second groove 362b, and a third groove 362c respectively disposed on the periphery of the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213.

[0040] like Figure 3 (b) and Figure 7 As shown in (b), the inks forming the first color resist 371, the second color resist 372, and the third color resist 373 are respectively contained in the first groove 362a, the second groove 362b, and the third groove 362c, so that in the formed display panel, the first color resist 371, the second color resist 372, and the third color resist 373 are respectively disposed in the first groove 362a, the second groove 362b, and the third groove 362c.

[0041] Specifically, it is understandable that, taking ink overflow during inkjet printing as an example, considering that overflow may not occur in certain areas during inkjet printing, the color resist can be set only in the corresponding opening. For example, when inkjet printing forms the third color resist 373, some or all of the ink forming the third color resist 373 may not overflow. In this case, some or all of the third color resist 373 may not be set in the third groove 362c, and some or all of the third color resist 373 may not be set on the black matrix layer 36 between the third groove 362c and the third opening 361c.

[0042] Specifically, such as Figure 4 As shown, Figure 4 It shows Figure 3 (a) shows a cross-sectional view of the black matrix layer 36 when it is set in the display panel 2. Figure 4 As can be seen, each sub-pixel area is surrounded by a groove.

[0043] Specifically, this application embodiment uses the example of a groove surrounding a sub-pixel area for illustration, but this application embodiment is not limited to this. For example, the groove can be set on one side, two sides or three sides of the sub-pixel area, and the groove can partially surround the sub-pixel area, surround one-third of the sub-pixel area, or surround two-thirds of the sub-pixel area.

[0044] In some embodiments, such as Figure 5 As shown, the pixel area 21 includes multiple sub-pixel areas, and each sub-pixel area is surrounded by multiple grooves 362. By having multiple grooves 362 surrounding each sub-pixel area, the total volume of the grooves 362 can be increased, thereby increasing the volume of ink that the grooves 362 can hold. This further reduces the risk of color mixing when inkjet printing forms color resists. Furthermore, since the risk of ink overflowing from one color resist to the setting area of ​​other color resists is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0045] Specifically, such as Figure 5 As shown, in the non-pixel area 22, the black matrix layer 36 includes multiple grooves 362. These grooves 362 are spaced apart, allowing ink overflow during inkjet printing to be blocked and contained by the grooves 362. This reduces the risk of ink overflowing into other color resist areas and the risk of color mixing when inkjet printing forms color resists. Furthermore, since the risk of ink overflowing from one color resist into other color resist areas is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0046] Specifically, it is understandable that when ink overflows during inkjet printing, it may not overflow into every groove 362. Therefore, some grooves 362 may have color resist, while others may not. For example, there are two grooves around the first sub-pixel area 211. The groove closer to the first sub-pixel area 211 has a first color resist, while the groove farther from the first sub-pixel 211 does not have a first color resist.

[0047] In some embodiments, such as Figures 3 to 6 As shown, the depth of the groove 362 is the same as the thickness of the black matrix layer 36; this makes the groove 362 larger in volume, which can hold more ink and has a better ink blocking effect, reducing the risk of color mixing when inkjet printing forms color resists. Furthermore, since the ink forming one color resist will not overflow into the setting area of ​​other color resists, the range of selectable contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials and avoiding excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0048] In some embodiments, such as Figures 3 to 6 As shown, the groove 362 penetrates the black matrix layer 36. By making the groove 362 penetrate the black matrix layer 36, the volume of the groove 362 is larger, which can hold more ink and has a better ink blocking effect. This reduces the risk of color mixing when inkjet printing forms color resists. Furthermore, since the ink forming one color resist will not overflow into the setting area of ​​other color resists, the range of selectable contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0049] Specifically, such as Figure 3 (a) Figure 4 As shown, the groove 362 penetrates the black matrix layer 36, resulting in a through-hole in the non-pixel area 22 of the black matrix layer 36. The through-hole can hold more ink. When ink overflows during inkjet printing to form color resist, the through-hole has a larger volume and can hold more ink, further reducing the risk of color mixing during inkjet printing to form color resist.

[0050] Specifically, such as Figure 5 As shown, multiple grooves 362 penetrating the black matrix layer 36 can be further provided, so that the multiple grooves 362 can hold more ink, further reducing the risk of color mixing when inkjet printing forms color resistance.

[0051] Specifically, such as Figure 3 (b) and Figure 6As shown, the first color resist 371 is set in the grooves 362 on both sides of the opening 361, and the second color resist 372 is also set in the grooves 362 on both sides of the opening 361. The grooves 362 block the ink overflow and reduce the risk of color mixing between the color resists.

[0052] Specifically, such as Figure 6 As shown, the color resist does not completely fill the groove. That is, in the actual design, when the volume of the groove 362 is large, the color resist can fill part of the groove instead of completely filling it. However, when the ink overflow volume is large, the color resist can completely fill the groove, and can even be placed above the black matrix layer 36 on the second touch metal layer.

[0053] In some embodiments, such as Figures 3 to 6 As shown, the display panel 2 further includes a touch layer 35, which is disposed between the substrate 31 and the black matrix layer 36. The touch layer 35 includes a first touch metal layer 352 and a second touch metal layer 354, which is disposed between the first touch metal layer 352 and the black matrix layer 36. The projection of the groove 362 onto the substrate 31 is spaced apart from the projection of the second touch metal layer 354 onto the substrate 31. By maintaining this distance, the projection of the groove 362 onto the substrate 31 and the projection of the second touch metal layer 354 onto the substrate 31 are kept separate, thus preventing the groove 362 from exposing the second touch metal layer 354 and increasing reflectivity, thereby improving the optical performance of the display panel.

[0054] Specifically, it can be understood that the first touch metal layer 352 and the second touch metal layer 354 are made of metal and have a high reflectivity. Therefore, a black matrix layer 36 is set to cover the second touch metal layer 354 and the first touch metal layer 352. When a groove 362 is formed on the black matrix layer 36, in order to avoid the groove 362 exposing the second touch metal layer 354 and causing the second touch metal layer 354 to reflect light and increase the reflectivity of the display panel, the groove 362 and the second touch metal layer 354 can be set alternately, so that the second touch metal layer 354 is still covered by the black matrix layer 36, thus avoiding increasing the reflectivity of the display panel 2.

[0055] Specifically, the projection of the groove 362 on the substrate 31 can be spaced apart from the projection of the first touch metal layer 352 on the substrate 31.

[0056] In some embodiments, such as Figures 7 to 13 As shown, there is a gap between the bottom of the groove 362 and the bottom of the black matrix layer 36, so that the groove 362 will not penetrate the black matrix layer 36, thus preventing light from shining out from the groove 362 and affecting the light effect.

[0057] Specifically, such as Figures 7 to 13 As shown, the groove 362 is formed by portions of the black matrix layer 36 at different heights. The groove 362 does not penetrate the black matrix layer 36, thus allowing for a larger width to accommodate more ink. This reduces the risk of color mixing during inkjet printing to form color resists. Furthermore, since the ink forming one color resist will not overflow into other color resist areas, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, improving the optical performance of the display panel.

[0058] Specifically, such as Figures 7 to 13 As shown, there is a gap between the bottom of the groove 362 and the top of the second touch metal layer 354, so that the groove 362 does not expose the second touch metal layer 354. This allows the width of the groove 362 to be set larger, thereby accommodating more ink and reducing the risk of color mixing when inkjet printing forms color resists. Furthermore, since the ink forming one color resist will not overflow into the setting area of ​​other color resists, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials and avoiding excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0059] In some embodiments, such as Figures 7 to 13 As shown, the display panel 2 also includes a touch layer 35, which is disposed between the substrate 31 and the black matrix layer 36. The touch layer 35 includes a first touch metal layer 352 and a second touch metal layer 354, which is disposed between the first touch metal layer 352 and the black matrix layer 36. There is a gap between the bottom of the groove 362 and the top of the second touch metal layer 354, which allows the width of the groove 362 to be set to be larger, thereby accommodating more ink, reducing the risk of color mixing when inkjet printing forms color resists, and since the ink forming one color resist will not overflow into the setting area of ​​other color resists, the range of selection for the contact angle between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials, and avoiding excessive bulging in the middle area of ​​the color resist, thus improving the optical performance of the display panel.

[0060] Specifically, when the groove 362 penetrates the black matrix layer 36, the groove 362 is narrow because it must be avoided being positioned above the second touch metal layer. This makes the etching process more difficult. Furthermore, since the groove 362 penetrates the black matrix layer 36, light can pass through it. When light shines out from the groove 362, it may cause light mixing, affecting the display and potentially causing the black matrix layer 36 to peel off. However, some embodiments of this application have a gap between the bottom of the groove 362 and the top of the second touch metal layer 354, allowing the groove 362 to be wider. This still allows it to hold more ink, and there are no through holes in the non-pixel area 22, preventing light from passing through the non-pixel area 22 and affecting the light effect, thus improving the optical performance of the display panel.

[0061] In some embodiments, such as Figure 7 , Figure 8 , Figure 9 As shown, each sub-pixel region is surrounded by a groove 362. The groove 362 is located away from the outer boundary of the corresponding sub-pixel region and close to the inner boundary of the corresponding sub-pixel region. This arrangement, with each groove surrounding each sub-pixel region, allows for ink containment, reducing the risk of color mixing during inkjet printing to form color resists. Furthermore, since the risk of ink overflowing from one color resist to other color resist areas is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also prevents excessive bulging in the middle area of ​​the color resist, improving the optical performance of the display panel.

[0062] Specifically, such as Figure 7 (a) Figure 8 As shown, a first groove 362a, a second groove 362b, and a third groove 362c are respectively provided around the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213. The thickness of the black matrix layer 36 corresponding to the first groove 362a, the second groove 362b, and the third groove 362c is less than the thickness of the other parts.

[0063] Specifically, the grooves surrounding different sub-pixel areas can be made to contact each other, or the grooves surrounding different sub-pixel areas can be spaced apart; for example, Figure 7 As shown in (a), the first groove 362a surrounding the first sub-pixel area 211 is in contact with the second groove 362b surrounding the second sub-pixel area 212, and the second groove 362b surrounding the second sub-pixel area 212 is in contact with the third groove 362c surrounding the third sub-pixel area 213.

[0064] In some embodiments, such as Figure 7 , Figure 9As shown, the color resist layer 37 includes a first color resist 371, a second color resist 372, and a third color resist 373. The first color resist 371 and the third color resist 373 are alternately arranged along a first direction X to form a first color resist row 411. The first color resist 371 and the third color resist 373 are alternately arranged along a second direction Y to form a first color resist column 421. A plurality of second color resists 372 are alternately arranged along the first direction X to form a second color resist row 412. A plurality of second color resists 372 are alternately arranged along the second direction Y to form a second color resist column 422. The groove 362 surrounding the second color resist 372 is in contact with the groove 362 surrounding the first color resist 371, and the groove 362 surrounding the second color resist 372 is in contact with the groove 362 surrounding the third color resist 373. Any two adjacent color resists among the first color resist 371, the second color resist 372, and the third color resist 373 are spaced apart.

[0065] Specifically, such as Figure 7 , Figure 9 As shown, the first groove 362a contacts the second groove 362b, and the second groove 362b contacts the third groove 362c. This results in a relatively large width for each groove, allowing it to hold a large volume of ink. When ink from inkjet printing overflows into the grooves, the inks corresponding to different color resists will not come into contact, thus ensuring that the color resists are spaced apart. However, the embodiments of this application are not limited to this; the color resists can be made to contact each other.

[0066] In some embodiments, the black matrix layer 36 includes a first portion 36a and a second portion 36b corresponding to the groove 362, wherein the thickness of the first portion 36a is greater than the thickness of the second portion 36b.

[0067] In some embodiments, such as Figures 10 to 13 As shown, the black matrix layer 36 includes a first portion 36a and a second portion 36b corresponding to the groove 362. The thickness of the first portion 36a is greater than the thickness of the second portion 36b. Each sub-pixel region has a first portion 36a around its periphery, and the second portion 36b is located within the area between the first portions 36a. By providing a first portion 36a around the periphery of each sub-pixel region and a second portion 36b within the area between the first portions 36a, the volume of the groove 362 can be further increased, reducing the risk of color mixing during inkjet printing to form color resists. Furthermore, since the risk of ink overflowing from one color resist to other color resist areas is low, the range of contact angles between the color resist and the black matrix layer is wider, reducing the development difficulty of color resist materials. It also avoids excessive bulging in the middle area of ​​the color resist, improving the optical performance of the display panel.

[0068] In some embodiments, such asFigure 10 , Figure 11 As shown, the color resist layer 37 includes a first color resist 371, a second color resist 372, and a third color resist 373. The first color resist 371 and the third color resist 373 are alternately arranged along a first direction X to form a first color resist row 411. The first color resist 371 and the third color resist 373 are alternately arranged along a second direction Y to form a first color resist column 421. A plurality of second color resists 372 are alternately arranged along the first direction X to form a second color resist row 412. A plurality of second color resists 372 are alternately arranged along the second direction Y to form a second color resist column 422. The outer boundary of the second color resist 372 is in contact with the outer boundary of the first color resist 371, and the outer boundary of the second color resist 372 is in contact with the outer boundary of the third color resist 373.

[0069] Specifically, such as Figure 10 As shown, Figure 10 Image (a) shows a planar view of the black matrix layer 36. Figure 10 (b) in the middle shows Figure 10 Plan view of the stacked black matrix layer 36 and color resist layer 37 in (a). Figure 10 As shown in (a), pixel area 21 includes a first sub-pixel area 211, a second sub-pixel area 212, and a third sub-pixel area 213. The opening 361 of the black matrix layer 36 includes a first opening 361a, a second opening 361b, and a third opening 361c corresponding to the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213, respectively. In the non-pixel area 22, the black matrix layer 36 includes three first portions 36a surrounding the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213, respectively. The second portion 36b is disposed between each of the first portions 36a.

[0070] like Figure 10 (b) Figure 11 As shown, the ink forming the first color resist 371, the second color resist 372 and the third color resist 373 can be accommodated by the groove 362, so that the first color resist 371, the second color resist 372 and the third color resist 373 can be set in the groove 362 in the formed display panel.

[0071] Specifically, Figure 10 , Figure 11 The diagram shows that the first color resistor 371 is in contact with the second color resistor 372, and the second color resistor 372 is in contact with the third color resistor 373. However, the embodiments of this application are not limited to this, and the color resistors may not be in contact.

[0072] In some embodiments, such as Figure 12 , Figure 13As shown, the color resist layer 37 includes a first color resist 371, a second color resist 372, and a third color resist 373. The first color resist 371 and the third color resist 373 are alternately arranged along a first direction X to form a first color resist row 411. The first color resist 371 and the third color resist 373 are alternately arranged along a second direction Y to form a first color resist column 421. A plurality of second color resists 372 are alternately arranged along the first direction X to form a second color resist row 412. A plurality of second color resists 372 are alternately arranged along the second direction Y to form a second color resist column 422. The outer boundary of the second color resist 372 overlaps with the outer boundary of the first color resist 371, and the outer boundary of the second color resist 372 overlaps with the outer boundary of the third color resist 373.

[0073] Specifically, such as Figure 12 As shown, Figure 12 Image (a) shows a planar view of the black matrix layer 36. Figure 12 (b) in the middle shows Figure 12 Plan view of the stacked black matrix layer 36 and color resist layer 37 in (a). Figure 12 As shown in (a), pixel area 21 includes a first sub-pixel area 211, a second sub-pixel area 212, and a third sub-pixel area 213. The opening 361 of the black matrix layer 36 includes a first opening 361a, a second opening 361b, and a third opening 361c corresponding to the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213, respectively. In the non-pixel area 22, the black matrix layer 36 includes three first portions 36a surrounding the first sub-pixel area 211, the second sub-pixel area 212, and the third sub-pixel area 213, respectively. The second portion 36b is disposed between each of the first portions 36a.

[0074] like Figure 12 (b) Figure 13 As shown, the ink forming the first color resist 371, the second color resist 372 and the third color resist 373 can be accommodated by the groove 362, so that the first color resist 371, the second color resist 372 and the third color resist 373 can be set in the groove 362 in the formed display panel.

[0075] Specifically, such as Figure 12 , Figure 13 As shown, the second color resist 372 overlaps with the first color resist 371, and the second color resist 372 overlaps with the third color resist 373. The overlap of the second color resist 372 and the first color resist 371 corresponds to the second touch metal layer 354, and the overlap of the second color resist 372 and the third color resist 373 corresponds to the second touch metal layer 354.

[0076] Specifically, when the black matrix layer 36 has a groove 362, the thickness of the portion of the black matrix layer 36 corresponding to the groove 362 will be relatively small. Since a second touch metal layer 354 is provided below the black matrix layer 36, the thinning of the black matrix layer 36 may increase the reflectivity of the display panel. In this embodiment, by overlapping color resists, specifically, the second color resist 372 and the first color resist 371 can overlap above the second touch metal layer 354, and the second color resist 372 and the third color resist 373 can overlap above the second touch metal layer 354, which can block light and reduce the reflectivity of the display panel.

[0077] Specifically, the grooves surrounding different sub-pixel areas can be made to contact each other, or the grooves surrounding different sub-pixel areas can be set at intervals, or the grooves surrounding different sub-pixel areas can overlap.

[0078] In some embodiments, such as Figure 6 , Figure 9 , Figure 11 , Figure 13 , Figure 14 As shown, the portion of the color resist layer 37 located within the opening 361 is continuous with the portion of the color resist layer 37 located within the adjacent groove 362.

[0079] Specifically, when forming the color resist layer 37, inkjet printing ink is used to form each color resist. When the ink overflows from the opening 361, it overflows into the groove 362, making the portion of the color resist layer 37 located in the opening 361 continuous with the portion of the color resist layer 37 located in the adjacent groove 362. However, the embodiments of this application are not limited to this. In the actual film formation process, the portion of the color resist layer 37 located in the opening 361 may break from the portion of the color resist layer 37 located in the adjacent groove 362.

[0080] In some embodiments, the area of ​​the first color resist 371 may be larger than the area of ​​the second color resist 372, and the area of ​​the first color resist 371 may be smaller than the area of ​​the third color resist 373.

[0081] Specifically, the diameter of the first color resistor 371 can be larger than the diameter of the second color resistor 372, and the diameter of the first color resistor 371 can be smaller than the diameter of the third color resistor 373.

[0082] Specifically, such as Figure 3As shown, the width of the portion of the black matrix layer 36 surrounding the first color resist 371 can be equal to the width of the portion of the black matrix layer 36 surrounding the second color resist 372, and the width of the portion of the black matrix layer 36 surrounding the first color resist 371 can be equal to the width of the portion of the black matrix layer 36 surrounding the third color resist 373; alternatively, the widths of the portions of the black matrix layer 36 surrounding the first color resist 371, the second color resist 372, and the third color resist 373 can be unequal.

[0083] Specifically, such as Figure 3 As shown, the width of the groove surrounding the first color resist 371 can be equal to the width of the groove surrounding the second color resist 372, and the width of the groove surrounding the first color resist 371 can be equal to the width of the groove surrounding the third color resist 373; alternatively, the widths of the groove surrounding the first color resist 371, the groove surrounding the second color resist 372, and the groove surrounding the third color resist 373 can be unequal.

[0084] Specifically, such as Figure 7 , Figure 10 , Figure 12 As shown, the width of the first portion surrounding the first color resist 371 can be equal to the width of the first portion surrounding the second color resist 372, and the width of the first portion surrounding the first color resist 371 can be equal to the width of the first portion surrounding the third color resist 373; alternatively, the widths of the first portion surrounding the first color resist 371, the first portion surrounding the second color resist 372, and the first portion surrounding the third color resist 373 can be unequal.

[0085] Specifically, such as Figure 7 As shown, the width of the groove surrounding the first color resist 371 can be equal to the width of the groove surrounding the second color resist 372, and the width of the groove surrounding the first color resist 371 can be equal to the width of the groove surrounding the third color resist 373; alternatively, the widths of the groove surrounding the first color resist 371, the groove surrounding the second color resist 372, and the groove surrounding the third color resist 373 can be unequal.

[0086] Specifically, the light-transmitting colors of the first, second, and third color resists can be red, green, and blue, respectively. However, the embodiments of this application are not limited to this. For example, the light-transmitting colors of the first, second, and third color resists can be red, blue, and green, respectively; the light-transmitting colors of the first, second, and third color resists can be blue, red, and green, respectively; the light-transmitting colors of the first, second, and third color resists can be blue, green, and red, respectively; the light-transmitting colors of the first, second, and third color resists can be green, blue, and red, respectively; the light-transmitting colors of the first, second, and third color resists can be green, red, and blue, respectively.

[0087] Specifically, such as Figure 3 As shown, the width of the opening can range from 10 micrometers to 30 micrometers. Considering that the widths of different parts of the opening are not equal, the width of the bottom of the opening can be from 10 micrometers to 30 micrometers, or the width of the center line of the opening can be from 10 micrometers to 30 micrometers, or the width of the top of the opening can be from 10 micrometers to 30 micrometers.

[0088] Specifically, such as Figure 3 As shown, the width of the groove can range from 3 micrometers to 10 micrometers. Similarly, this width can be the width of the bottom of the groove, the width of the top of the groove, or the width of the center line of the groove.

[0089] Specifically, the width of the groove can be 30% to 70% of the width of the black matrix layer in the non-pixel area.

[0090] Specifically, such as Figure 7 As shown, the width of the groove can range from 1 micrometer to 10 micrometers.

[0091] Specifically, such as Figure 3 As shown, the width of the black matrix layer surrounding the sub-pixel region ranges from 1 micrometer to 10 micrometers, as... Figure 7 , Figure 10 , Figure 12 As shown, the width of the first part surrounding the sub-pixel region ranges from 1 micrometer to 10 micrometers.

[0092] Specifically, such as Figure 7 , Figure 10 , Figure 12 As shown, the distance between the outer boundary of the first portion surrounding the first sub-pixel region 211 and the outer boundary of the first portion surrounding the third sub-pixel region 213 ranges from 20 micrometers to 50 micrometers.

[0093] Specifically, the depth of the groove ranges from 0.5 micrometers to 1 micrometer.

[0094] Specifically, the thickness of the black matrix layer can range from 1 micrometer to 3 micrometers, and the maximum thickness of the color resist layer can range from 2 micrometers to 4 micrometers. However, the embodiments of this application are not limited to this, and the maximum thickness of the color resist layer can be greater than or equal to 5 micrometers.

[0095] Specifically, the contact angle between the black matrix layer 36 and the color resist layer 37 can be 20 degrees to 60 degrees, or 80 degrees to 90 degrees.

[0096] Specifically, the maximum thickness of the color resist layer can be greater than the thickness of the black matrix layer.

[0097] Meanwhile, to illustrate the design of the display panel in the embodiments of this application, a structure of a display panel 2 is provided as an example, such as... Figure 14As shown, the display panel 2 includes a substrate 31, a driving circuit layer 32, a light-emitting functional layer 33, an encapsulation layer 34, a touch layer 35, a black matrix layer 36, a color resist layer 37, and a planarization layer 38.

[0098] Specifically, the driving circuit layer 32 includes a buffer layer 321, an active layer 322, a first gate insulating layer 323, a first gate layer 324, a second gate insulating layer 325, a second gate layer 326, an interlayer insulating layer 327, a source-drain layer 328, and a planarization layer 329. It is understood that the driving circuit layer 32 in this embodiment can also have other structures. For example, the driving circuit layer 32 may include two active layers of different materials, or it may include two or three source-drain layers, which will not be elaborated further here.

[0099] Specifically, the light-emitting functional layer 33 includes a pixel electrode layer 331, a pixel definition layer 332, a light-emitting material layer 333, and a common electrode layer 334. The light-emitting material layer 333 may include a first light-emitting material 333a, a second light-emitting material 333b, and a third light-emitting material 333c. The first light-emitting material 333a, the second light-emitting material 333b, and the third light-emitting material 333c may be respectively disposed corresponding to the first color resist, the second color resist, and the third color resist, and the light emission color of the first light-emitting material 333a, the second light-emitting material 333b, and the third light-emitting material 333c may be the same as the light transmission color of the first color resist, the second color resist, and the third color resist, respectively. However, the embodiments of this application are not limited to this, and the light emission color of the first light-emitting material 333a, the second light-emitting material 333b, and the third light-emitting material 333c may all be white.

[0100] Specifically, the areas of the first luminescent material 333a, the second luminescent material 333b, and the third luminescent material 333c can be equal to the areas of the first sub-pixel region 211, the second sub-pixel region 212, and the third sub-pixel region 213. The area of ​​the first luminescent material 333a can be larger than the area of ​​the second luminescent material 333b, and the area of ​​the first luminescent material 333a can be smaller than the area of ​​the third luminescent material 333c.

[0101] Specifically, the encapsulation layer 34 may include a first inorganic layer, an organic layer, and a second inorganic layer arranged sequentially.

[0102] Specifically, the touch layer 35 may include a first touch insulating layer 351, a first touch metal layer 352, a second touch insulating layer 353, and a second touch metal layer 354.

[0103] Specifically, the material of the black matrix layer can be organic photoresist.

[0104] Specifically, the color resist layer can be formed by inkjet printing, and the black matrix layer can be formed by photolithography.

[0105] likeFigure 15 As shown, Figure 15 (a) in the image is a black matrix layer formed using a full exposure method. Figure 15 (b) in the diagram represents a black matrix layer formed using a semi-transparent photomask. For example... Figure 15 As shown in (a), during the formation of the black matrix layer 36, the photomask 43 is aligned with the substrate to completely block light from the pixel area and fully expose the non-pixel area. Light 44 is used for irradiation, and then the black matrix layer is formed through development and curing. Figure 15 As shown in (b) of this application embodiment, in the formation Figures 7 to 9 When the black matrix layer 36 is shown, a semi-transparent photomask can be aligned with the substrate, so that the fully light-blocking part 431 of the semi-transparent photomask corresponds to the pixel area, the semi-light-blocking part 432 of the semi-transparent photomask corresponds to a part of the non-pixel area, and the fully light-transmitting part corresponds to other areas of the non-pixel area. The substrate is then irradiated by light 44, and then the black matrix layer is formed by development and curing, so that the black matrix layer forms grooves.

[0106] Specifically, the above embodiments describe the display panel in detail in terms of film layer structure and pixel design. It is understood that when there is no conflict between the embodiments, the embodiments can be combined. For example, each sub-pixel area is surrounded by multiple grooves, and the grooves penetrate the black matrix layer.

[0107] Meanwhile, this application provides a display device, which includes a display panel as described in any of the above embodiments.

[0108] Specifically, the display device may also include a power supply.

[0109] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0110] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0111] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0112] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display panel, characterized in that, The display panel includes a display area, which comprises a pixel area and a non-pixel area, and includes: Substrate; A black matrix layer is disposed on one side of the substrate, and the black matrix layer has an opening in the pixel area; A color resist layer is disposed on the side of the black matrix layer away from the substrate, and a portion of the color resist layer is disposed within the opening; The black matrix layer has a groove in the non-pixel area, and another part of the color resist layer is disposed in the groove.

2. The display panel according to claim 1, characterized in that, The pixel region includes multiple sub-pixel regions, each of which is surrounded by a groove, or each of which is surrounded by multiple grooves.

3. The display panel according to claim 2, characterized in that, The depth of the groove is the same as the thickness of the black matrix layer.

4. The display panel according to claim 3, characterized in that, The display panel further includes a touch layer, which is disposed between the substrate and the black matrix layer. The touch layer includes a first touch metal layer and a second touch metal layer, with the second touch metal layer disposed between the first touch metal layer and the black matrix layer. There is a gap between the projection of the groove on the substrate and the projection of the second touch metal layer on the substrate.

5. The display panel according to claim 2, characterized in that, The display panel further includes a touch layer, which is disposed between the substrate and the black matrix layer. The touch layer includes a first touch metal layer and a second touch metal layer, with the second touch metal layer disposed between the first touch metal layer and the black matrix layer. There is a gap between the bottom of the groove and the top of the second touch metal layer.

6. The display panel according to claim 5, characterized in that, Each of the sub-pixel regions is surrounded by a groove, which is located away from the outer boundary of the corresponding sub-pixel region and close to the inner boundary of the corresponding sub-pixel region.

7. The display panel according to claim 6, characterized in that, The color resist layer includes a first color resist, a second color resist, and a third color resist. The first color resist and the third color resist are alternately arranged along a first direction to form a first color resist row. The first color resist and the third color resist are alternately arranged along a second direction to form a first color resist column. A plurality of second color resists are alternately arranged along the first direction to form a second color resist row. A plurality of second color resists are alternately arranged along the second direction to form a second color resist column. The groove surrounding the second color resist is in contact with the groove surrounding the first color resist, and the groove surrounding the second color resist is in contact with the groove surrounding the third color resist. Any two adjacent color resists among the first, second, and third color resists are spaced apart.

8. The display panel according to claim 5, characterized in that, The black matrix layer includes a first part and a second part corresponding to the groove, wherein the thickness of the first part is greater than the thickness of the second part; Each of the sub-pixel regions has a first portion surrounding it, and a second portion is provided in the region between the first portions.

9. The display panel according to claim 8, characterized in that, The color resist layer includes a first color resist, a second color resist, and a third color resist. The first color resist and the third color resist are alternately arranged along a first direction to form a first color resist row. The first color resist and the third color resist are alternately arranged along a second direction to form a first color resist column. A plurality of second color resists are alternately arranged along the first direction to form a second color resist row. A plurality of second color resists are alternately arranged along the second direction to form a second color resist column. Wherein, the outer boundary of the second color resist is in contact with the outer boundary of the first color resist, and the outer boundary of the second color resist is in contact with the outer boundary of the third color resist.

10. The display panel according to any one of claims 1 to 9, characterized in that, The portion of the color resist layer located within the opening is continuous with the portion of the color resist layer located within the adjacent groove.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 10.

Images