Display panel and mobile terminal

Abstract

The application discloses a display panel and a mobile terminal. The display panel comprises an array substrate, a pixel definition layer, a light-emitting functional layer, a color film layer, a light-transmitting layer and a cover plate. The pixel definition layer is arranged on the array substrate and comprises a plurality of first openings. The light-emitting functional layer comprises light-emitting pixels arranged in an array, and the light-emitting pixels are arranged in the first openings of the pixel definition layer. The color film layer is arranged on a side of the light-emitting functional layer away from the array substrate, and comprises a black matrix and color resistance. The black matrix comprises second openings arranged corresponding to the first openings, and the color resistance is arranged corresponding to the second openings. The light-transmitting layer is arranged on a side of the color film layer away from the light-emitting functional layer, and comprises a plurality of light-transmitting portions. The light-transmitting portions are arranged in a one-to-one correspondence with the color resistance, and the refractive index of the light-transmitting portions is lower than that of the color resistance. The cover plate is arranged on a side of the light-transmitting layer away from the color film layer. The light-emitting efficiency is improved, and the display effect of the display screen is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and a mobile terminal. Background Technology

[0002] Currently, display panels are gaining widespread attention in mobile displays, televisions, and other display fields due to their fast response times and slim, lightweight design. With the development of display technology, people are increasingly demanding higher display quality from display devices, including brightness, color reproduction, and the richness of colors.

[0003] In related technologies, the display panel uses a combination of a black matrix and color resists to form a color filter layer. Light is emitted from the color filter layer and enters the cover plate. The light is refracted by the corresponding color resists, resulting in low light emission efficiency, low brightness, and poor display effect. Summary of the Invention

[0004] This application provides a display panel and a mobile terminal to solve the technical problem of poor display effect in existing display panels because light is emitted directly from the color filter layer.

[0005] To address the above issues, the technical solution provided in this application is as follows:

[0006] This application provides a display panel, including:

[0007] Array substrate;

[0008] A pixel definition layer is disposed on the array substrate, and the pixel definition layer includes a plurality of first openings;

[0009] The light-emitting functional layer includes an array of light-emitting pixels, each of which is correspondingly disposed within the first opening of the pixel definition layer;

[0010] A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a black matrix and a color resist. The black matrix includes a second opening corresponding to the first opening, and the color resist is disposed corresponding to the second opening.

[0011] A light-transmitting layer is disposed on the side of the color filter layer away from the light-emitting functional layer. The light-transmitting layer includes a plurality of light-transmitting portions, which are aligned with the color resist. The refractive index of the light-transmitting portions is lower than the light transmittance of the color resist.

[0012] A cover plate is disposed on the side of the light-transmitting layer away from the color filter layer.

[0013] In some embodiments, the light-transmitting layer further includes a plurality of transparent matrices, which are aligned with the black matrix, and the light-transmitting portions are disposed between adjacent transparent matrices.

[0014] In some embodiments, the light-transmitting portion is air or transparent material filling the spaces between the transparent matrix.

[0015] In some embodiments, the transparent matrix is ​​made of a high-reflectivity material;

[0016] And / or, the transparent matrix is ​​made of an adhesive material.

[0017] In some embodiments, the ratio of the sum of the heights of the black matrix and the transparent matrix to the height of the color filter along the thickness direction of the color filter layer is α, where 1≤α≤5.

[0018] In some embodiments, the side of the color resist away from the light-emitting functional layer protrudes from the black matrix, and a cone angle β is formed between the side of the color resist away from the light-emitting functional layer and the black matrix, where 30°≤β<90°.

[0019] In some embodiments, the light-transmitting layer includes multiple stacked light-transmitting sub-layers, with the light-transmitting sub-layers on the side opposite to the cover plate disposed on the color filter layer, and each of the transparent sub-layers having a light-transmitting sub-part, which is aligned with the color filter.

[0020] In some embodiments, the light-transmitting portion and the color resist are provided one-to-one;

[0021] Alternatively, the light-transmitting portion is configured corresponding to the color resist in M ​​rows × N columns, and M and N are greater than or equal to 2.

[0022] In some embodiments, the transparent matrix is ​​prepared using screen printing or inkjet printing processes.

[0023] This application also proposes a mobile terminal, which includes a display panel and a terminal body as described in any of the above claims, wherein the terminal body and the display panel are integrated into one unit.

[0024] Beneficial Effects: This application discloses a display panel and a mobile terminal; the display panel includes an array substrate, a pixel definition layer, a light-emitting functional layer, a color filter layer, and a light-transmitting layer. The color filter layer includes a black matrix and a color resist. The light-transmitting layer has a light-transmitting part, which is aligned with the color resist. The refractive index of the light-transmitting part is lower than that of the color resist. When light enters the light-transmitting part from the color resist, the refractive angle of the light in the light-transmitting part is larger because the refractive index of the light-transmitting part is smaller than that of the color resist. The light converges towards the center area of ​​the panel, improving the light emission efficiency and enhancing the display effect. This overcomes the technical problem of poor display effect in existing display panels where light is directly emitted from the color filter layer. Attached Figure Description

[0025] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0026] Figure 1 This is a cross-sectional structural diagram of the display panel of this application;

[0027] Figure 2 A cross-sectional view of the reflective cavity of the display panel of this application, filled with transparent material;

[0028] Figure 3 This is a cross-sectional view of the transparent matrix of the display panel in this application, which has a double-layer structure.

[0029] Figure 4 This is a cross-sectional view showing that the cover plate of the display panel in this application has a double-layer structure;

[0030] Figure 5 This is a cross-sectional structural diagram of the multiple color resists corresponding to the anti-reflection cavity of the display panel in this application;

[0031] Figure 6 This is a top view of the display panel of this application;

[0032] Figure 7 This is a partial enlarged view of the color resist area of ​​the display panel in this application. Detailed Implementation

[0033] 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 scope of protection of this application.

[0034] See Figure 1 As shown, Figure 1 This is a cross-sectional structural diagram of the display panel of this application.

[0035] This application provides a display panel, which includes, from bottom to top, an array substrate 100, a pixel definition layer 200, a light-emitting functional layer 300, an encapsulation layer 400, a touch layer 500, a color filter layer 600, a light-transmitting layer 700, and a cover plate 800.

[0036] The array substrate 100 includes, from bottom to top, a substrate 110, a semiconductor active layer 120, a first insulating layer 130, a first gate layer 140, a second insulating layer 150, a second gate layer 160, a third insulating layer 170, a source / drain layer 180, and a planarization layer 190. The semiconductor active layer 120, the first gate layer 140, the second gate layer 160, and the source / drain layer 180 together form thin-film transistors and capacitors, among other components, of the display panel. The semiconductor active layer 120 is patterned to form the active region of the thin-film transistor, which includes a channel region and doped regions located on both sides of the channel region. The material of the semiconductor active layer 120 can be an oxide semiconductor material, polycrystalline silicon, or monocrystalline silicon. The first gate layer 140 is patterned to form the first gate of the thin-film transistor and the first electrode plate of the capacitor, and the second gate layer 160 is patterned to form the second gate of the thin-film transistor and the second electrode plate of the capacitor. The first gate and the second gate simultaneously correspond to the channel region of the semiconductor active layer 120. The source and drain layers 180 are patterned to form the source and drain of a thin-film transistor. The source and drain are connected to the doped regions on both sides of the channel region through vias penetrating the first insulating layer 130, the second insulating layer 150, and the third insulating layer 170, respectively. The thin-film transistor, capacitors, and other components, along with the signal lines in the array substrate 100, together constitute the driving circuit of the display panel, used to drive the light-emitting functional layer 300 to emit light for display. The first insulating layer 130, the second insulating layer 150, and the third insulating layer 170 are used to isolate the two adjacent conductive layers. The planarization layer 190 is located on the source and drain layers 180 and is used to planarize the array substrate 100, providing a flat substrate for the fabrication of the light-emitting functional layer 300 on the planarization layer 190. The material of the planarization layer 190 is generally an organic layer, including but not limited to organic materials such as acrylic, polyimide (PI), or benzocyclobutene (BCB).

[0037] The light-emitting functional layer 300 includes a first electrode layer 310, a first light-emitting auxiliary layer 320, a light-emitting material layer 330, a second light-emitting auxiliary layer 340, and a second electrode layer 350 stacked from bottom to top. The first electrode layer 310 is disposed on the planarization layer 190. The first electrode layer 310 is patterned to form spaced and independent first electrodes. The first electrodes are connected to the source or drain of the underlying thin-film transistor through vias penetrating the planarization layer 190, thereby connecting to the driving circuit of the display panel. The pixel definition layer 200 is disposed on the first electrode layer 310 and the array substrate 100. The patterned first electrode layer 310 forms a first opening in the pixel definition layer. The first opening in the pixel definition layer is located within the pixel region and corresponds to and exposes the first electrode. The first light-emitting auxiliary layer 320 is disposed entirely on the pixel definition layer 200, covering the pixel definition layer 200 and the first electrodes. The first light-emitting auxiliary layer 320 typically includes a hole transport layer and a hole injection layer, with the hole injection layer located between the hole transport layer and the light-emitting material layer 330. A light-emitting material layer 330 is disposed within the first opening of the pixel definition layer and corresponds one-to-one with the first electrode below the first opening of the pixel definition layer. The light-emitting material layer 330 includes multiple light-emitting materials of different colors, which are located within the first openings of different pixel definition layers 200. The multiple light-emitting materials include red, green, and blue light-emitting materials. A second light-emitting auxiliary layer 340 is disposed on the light-emitting material layer 330, covering the light-emitting material layer 330 and the first light-emitting auxiliary layer 320. The second light-emitting auxiliary layer 340 includes an electron transport layer and an electron injection layer, with the electron injection layer located between the electron transport layer and the light-emitting material layer 330. A second electrode layer 350 is disposed on the second light-emitting auxiliary layer 340. The second electrode layer 350 is generally a conductive layer formed of an opaque metal, and its materials include, but are not limited to, metals such as silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), or calcium (Ca) and their alloys. Each red luminescent material, together with the first electrode layer 310 and the first luminescent auxiliary layer 320 below it, and the second luminescent auxiliary layer 340 and the second electrode layer 350 above it, constitutes a red luminescent pixel 360. Each green luminescent material, together with the first electrode layer 310 and the first luminescent auxiliary layer 320 below it, and the second luminescent auxiliary layer 340 and the second electrode layer 350 above it, constitutes a green luminescent pixel 360. Each blue luminescent material, together with the first electrode layer 310 and the first luminescent auxiliary layer 320 below it, and the second luminescent auxiliary layer 340 and the second electrode layer 350 above it, constitutes a blue luminescent pixel 360.

[0038] An encapsulation layer 400 is disposed on the second electrode layer 350. The encapsulation layer 400 includes a first organic encapsulation sublayer, a second organic encapsulation sublayer, and an inorganic encapsulation sublayer. The inorganic encapsulation sublayer is located between the first and second organic encapsulation sublayers. The first and second organic encapsulation sublayers are used to planarize the light-emitting functional layer 300 and improve the flexibility of the display panel. The inorganic encapsulation sublayer is used to isolate external water, oxygen, or impurity ions from entering the light-emitting functional layer 300. The first organic encapsulation sublayer is disposed on the second electrode layer 350, filling the openings in the pixel definition layer and the second electrode layer 350, and covering the second electrode layer 350 and the second light-emitting auxiliary layer 340. The entire inorganic encapsulation sublayer is disposed on the first organic encapsulation sublayer, and the entire second organic encapsulation sublayer is disposed on the inorganic encapsulation sublayer.

[0039] The touch layer 500 is disposed on the side of the encapsulation layer 400 opposite to the light-emitting functional layer 300, and the touch layer 500 includes a touch electrode 510. The touch electrode 510 can be a self-capacitive touch electrode or a mutual-capacitive touch electrode; the touch electrode 510 can be a touch electrode composed of a single metal layer or a touch electrode composed of two metal layers; the touch electrode 510 can be a mesh-shaped metal electrode or a planar metal electrode.

[0040] In this embodiment, the color filter layer 600 includes a black matrix 610 and a filter layer 620. The black matrix 610 is disposed on the array substrate 100 and on the side of the touch layer 500 opposite to the encapsulation layer 400. The black matrix 610 completely covers the touch layer 500. The black matrix 610 is patterned, and multiple second openings 611 are formed in the black matrix 610. The multiple second openings 611 are arranged in an array, and the second openings 611 are aligned with the light-emitting pixels 360 of the light-emitting functional layer 300. The area of ​​the black matrix 610 outside the second openings 611 covers the light-shielding area. The black matrix 610 is mainly used to absorb light, reduce the reflection of external light by the metal on the underside of the black matrix 610, and reduce the low blue light effect of the display panel. The material of the black matrix 610 can be one or more of carbon black, titanium dioxide, ink, or dark photoresist. A filter layer 620 covers the touch layer 500 at the black matrix 610 and the second opening 611. The patterned filter layer 620 forms multiple color resists 621, which completely cover the second opening 611. The second opening 611, the color resists 621, and the light-emitting pixels 360 are aligned. Along the thickness direction of the display panel, the projection of the color resists 621 completely covers the corresponding light-emitting pixels 360. The color resists 621 include red, green, and blue color resists. The red color resist is aligned with the red light-emitting pixels, the green color resist with the green light-emitting pixels, and the blue color resist with the blue light-emitting pixels. The material of each color resist 621 in the filter layer 620 can be selected from pigments, photocurable resins, alkaline soluble resins, and photoinitiators corresponding to its color to achieve the filtering function.

[0041] The light-transmitting layer 700 is disposed on the side of the color filter layer 600 away from the light-emitting functional layer 300. The light-transmitting layer 700 includes a plurality of light-transmitting parts 710. The light-transmitting parts 710 are aligned with the color resist 621 and the light-transmitting parts 710 completely cover the 621. The angle of refraction of light in the light-transmitting parts 710 is greater than the angle of refraction of light in the color resist 621.

[0042] See Figure 4 As shown, Figure 4 This is a cross-sectional view of the cover plate of the display panel in this application, which has a double-layer structure.

[0043] The cover plate 800 includes an inorganic film layer 810 and a transparent substrate 820. The inorganic film layer 810 is pre-formed on the transparent substrate 820 to form the cover plate 800. The cover plate 800 is bonded to the color filter layer 600, with the inorganic film layer 810 located between the transparent substrate 820 and the color filter layer 600. Alternatively, the cover plate 800 may consist only of the transparent substrate 820, which is bonded to the color filter layer 600.

[0044] Understandably, since the refractive index of color resist 621 is higher than that of light-transmitting part 710, the refraction angle of light emitted from color resist 621 is larger, forming a more convergent light path, which improves the light emission efficiency of the display screen, improves the display effect, and overcomes the technical problem of poor display effect of existing display panels due to light being emitted directly from the color filter layer.

[0045] In some embodiments, the light-transmitting layer 700 further includes a plurality of transparent matrices 720, which are aligned with the black matrix 610. The transparent matrix 720 is disposed on the side of the black matrix 610 away from the array substrate 100. Light-transmitting portions 710 are disposed between adjacent transparent matrices 720. The area of ​​the transparent matrix 720 is smaller than that of the black matrix 610, so as to maximize the area of ​​the light-transmitting portion 710. The cover plate 800 is disposed on the side of the transparent matrix 720 away from the color filter layer 600.

[0046] Based on the above embodiment, the light-transmitting portion 710 is air filled between the transparent matrix 720.

[0047] Understandably, the cover plate 800 and the transparent matrix 720 are bonded together. The side of the transparent matrix 720 facing away from the array substrate 100 is closer to the cover plate 800 than the side of the color resist 621 facing away from the array substrate 100. The side of the color resist 621 facing away from the array substrate 100, the transparent matrix 720, the black matrix 610, and the cover plate 800 form a cavity structure. When light exits from the color resist 621 and enters the cavity structure, and exits from the cover plate 800 corresponding to the cavity structure into the outside space, the refractive index of the air inside the cavity structure is less than the refractive index of the color resist 621, thus forming a more convergent light path, improving light extraction efficiency, and improving the display effect of the screen. In addition, the entire display panel has a simple processing technology and low processing cost.

[0048] See Figure 2 As shown, Figure 2 This is a cross-sectional view of the cavity structure of the display panel of this application, filled with transparent material.

[0049] Based on the above embodiment, the light-transmitting part 710 is a transparent material filled between the transparent matrix 720, and the refractive index of the transparent material is lower than the refractive index of the color resist 621.

[0050] By filling the space between the transparent matrix 720 with transparent material, the refractive index of the transparent material is less than that of the color resist 621. Light enters the transparent material from the color resist 621, and the transparent material changes the direction of light refraction, forming a more focused light path. The transparent material and the transparent matrix together support the cover plate 800, improving the display effect of the display screen while increasing the structural strength and stability of the display panel.

[0051] The transparent material can be one or more of the following: urea-formaldehyde resin adhesive, polyvinyl acetate adhesive, polyacrylic resin adhesive, polyacrylic resin, polyurethane adhesive, hot melt adhesive, epoxy resin adhesive, and synthetic adhesive.

[0052] The transparent matrix 720 can be adhesive to bond with the cover plate 800, increasing the stability of the display panel.

[0053] In some embodiments, the transparent matrix 720 is made of a highly reflective material, and / or, is made of an adhesive material.

[0054] The material of the transparent matrix 720 can be one or more of the following: urea-formaldehyde resin adhesive, polyvinyl acetate adhesive, polyacrylic resin adhesive, polyacrylic resin, polyurethane adhesive, hot melt adhesive, epoxy resin adhesive, and synthetic adhesive.

[0055] See Figure 3 As shown, Figure 3 This is a cross-sectional view of the transparent matrix of the display panel in this application, which has a double-layer structure.

[0056] In some embodiments, the light-transmitting layer 700 includes multiple stacked light-transmitting sub-layers, such as a first light-transmitting sub-layer 721 and a second light-transmitting sub-layer 722. The first light-transmitting sub-layer 721 is disposed on the color filter layer 600. Each light-transmitting sub-layer has a light-transmitting portion, which is aligned with the color filter 621. For example, both the first light-transmitting sub-layer 721 and the second light-transmitting sub-layer 722 have light-transmitting portions. Along the thickness direction of the light-transmitting layer 700, the light-transmitting portions of each light-transmitting sub-layer are aligned to form a light-transmitting portion 710.

[0057] Understandably, the light-transmitting layer 700 can adopt a single-layer structure or a multi-layer structure. When a multi-layer structure is adopted, the material and thickness of each layer can be the same, such as the first light-transmitting sublayer 721 and the second light-transmitting sublayer 722 both being made of urea-formaldehyde resin adhesive. The material and thickness of each layer can be different, such as the first light-transmitting sublayer 721 being made of epoxy resin adhesive and the second light-transmitting sublayer 722 being made of polyacrylic acid resin.

[0058] See Figure 7 The above, Figure 7 This is a partial enlarged view of the color resist area of ​​the display panel in this application.

[0059] In some embodiments, along the thickness direction of the color filter layer 600, the height of the color resist 621 is H1, and the sum of the heights of the black matrix 610 and the transparent matrix 720 is H2, wherein the ratio of H2 to H1 is α, and 1≤α≤5.

[0060] Understandably, the smaller the height difference between the side of the transparent matrix 720 facing away from the array substrate 100 and the side of the color resist 621 facing away from the array substrate 100, the shorter the transmission distance of light within the light-transmitting part 710. Before the light reaches the transparent matrix 720, it exits from the cover plate 800, avoiding color mixing and improving the display effect. The ratio α of H2 to H1 can be 1, 2, 3, 4, 5, or other listed values. When the ratio α of H1 to H2 is 1, the side of the cover plate 800 closest to the array substrate 100 is in contact with the side of the color resist 621 facing away from the array substrate 100. A cavity structure is formed between the inclined surface 6210 of the color resist 621 and the cover plate 800, which also serves to converge the light path.

[0061] In some implementations, see Figure 7 As shown, the side of the color resist 621 away from the light-emitting functional layer 300 protrudes from the black matrix 610, and a cone angle β is formed between the side of the color resist 621 away from the light-emitting functional layer 300 and the black matrix 610, where 30°≤β<90°.

[0062] Understandably, the color resist 621 has a bevel 6210 and a plane 6211 on one side away from the array substrate 100. The plane 6211 is parallel to the array substrate 100. The bevel 6210 connects the plane 6211 and the black matrix 610 on one side away from the array substrate 100. A cone angle β is formed between the bevel 6210 and the black matrix 610, where 30°≤β<90°. The cone angle β can be 30°, 40°, 50°, 60°, 70°, 80°, 85°, 89° or other listed values.

[0063] A cone angle β is formed between the inclined surface 6210 of the color resist 621 and the black matrix 610. Light enters the cavity structure from the color resist 621 and is refracted. By changing the cone angle β, the incident angle of the light can be changed, thereby changing the transmission direction of the light. The smaller the cone angle β, the more the light is deflected towards the middle area of ​​the color resist 621, and the less light enters the transparent matrix 720. The higher the light emission efficiency of the cover plate 800 on the light-transmitting part 710 side, the better the display effect.

[0064] In some implementations, see Figure 1 As shown, the light-transmitting part 710 and the color resist 621 are set one-to-one.

[0065] It is understandable that the number of light-transmitting parts 710 is the same as the number of color resists 621, and the position of the light-transmitting parts 710 corresponds to the position of the color resists 621. For example, one color resist 621 corresponds to one cavity structure. Along the thickness direction of the display panel, the projection of the light-transmitting part 710 is larger than the area where the color resist 621 is located, forming a better optical transmission path and improving the display effect of the display screen.

[0066] See Figure 5 As shown, Figure 5 This is a cross-sectional view of the light-transmitting portion 710 of the display panel of this application, corresponding to a plurality of color resists 621.

[0067] In some embodiments, the light-transmitting portion 710 is provided corresponding to the M rows × N columns of color resist 621, and M and N are greater than or equal to 2.

[0068] Understandably, the light-transmitting part 710 can cover multiple color resists 621, so the required number of light-transmitting parts 710 is small and the processing technology is simple.

[0069] See Figure 6 As shown, Figure 6 This is a top view of the display panel of this application.

[0070] In some implementations, the transparent matrix 720 surrounding the color resist 621 can be circular, rectangular, elliptical, or other irregular closed shapes.

[0071] Understandably, when one color resist 621 corresponds to one light-transmitting part 710, a transparent matrix 720 is arranged around one color resist 621. The shape of the transparent matrix 720 can be circular, rectangular, elliptical or other irregular closed shape. The shape and size of the transparent matrix 720 are adapted to the shape and size of the color resist 621, thereby forming a better light transmission path and improving the display effect of the display screen.

[0072] In some embodiments, the light-transmitting layer 700 is prepared using screen printing or inkjet printing processes.

[0073] It is understandable that the process of preparing a transparent matrix 720 on a black matrix 610 using screen printing or inkjet printing, forming a light-transmitting part 710 between the transparent matrices 720, and a light-transmitting layer 700 is simple.

[0074] This application also provides a mobile device, including a terminal body and the aforementioned display panel, wherein the terminal body and the display panel are integrated into one unit. The mobile terminal may include electronic devices such as mobile phones, televisions, and laptops.

[0075] The display panel includes, from bottom to top, an array substrate 100, a pixel definition layer 200, a light-emitting functional layer 300, an encapsulation layer 400, a touch layer 500, a color filter layer 600, a light-transmitting layer 700, and a cover plate 800.

[0076] The color filter layer 600 includes a black matrix 610 and a light filter layer 620. The black matrix 610 is disposed on the array substrate 100 and on the side of the touch layer 500 opposite to the encapsulation layer 400. The black matrix 610 completely covers the touch layer 500. The black matrix 610 is patterned, and multiple second openings 611 are formed in the black matrix 610. The multiple second openings 611 are arranged in an array, and the second openings 611 are aligned with the light-emitting pixels 360 of the light-emitting functional layer 300. The area of ​​the black matrix 610 outside the second openings 611 covers the light-shielding area. The black matrix 610 is mainly used to absorb light, reduce the reflection of external light by the metal on the underside of the black matrix 610, and reduce the low blue light effect of the display panel. The light-transmitting layer 700 is disposed on the side of the color filter layer 600 away from the light-emitting functional layer 300. The light-transmitting layer 700 includes a plurality of light-transmitting parts 710, which are aligned with the color resist 621. The light-transmitting parts 710 completely cover the 621, and the refractive index of the light-transmitting parts 710 is lower than the refractive index of the color resist 621.

[0077] Because the refractive index of color resist 621 is higher than that of light-transmitting part 710, the refraction angle of light emitted from color resist 621 is larger, forming a more convergent light path, improving light emission efficiency, improving the display effect of the display screen, and overcoming the technical problem of poor display effect of existing display panels due to light being emitted directly from the color filter layer.

[0078] This application also provides a method for manufacturing a display panel, comprising the following steps:

[0079] S1, an array substrate 100 is provided, the array substrate 100 includes an array of light-emitting pixels 360;

[0080] A black matrix 610 is formed on the array substrate 100, and the patterned black matrix 610 forms a plurality of second openings 611, which are aligned with the light-emitting pixels 360.

[0081] S2, a filter layer 620 is formed on the black matrix 610 and the array substrate 100, and a plurality of color resists 621 are formed in the patterned filter layer 620, and the color resists 621 are aligned with the light-emitting pixels 360.

[0082] S3, using screen printing or inkjet printing, a transparent matrix 720 is formed on the black matrix 610, and the transparent matrix 720 is located between adjacent color resists 621;

[0083] For example, a transparent matrix 720 can be prepared using screen printing. The screen has a resist-blocking area and a resist-printing area. During the printing process, the resist-printing area corresponds one-to-one with the color resist 621, ensuring the resist printing process. This avoids the glue from being printed onto the color resist 621, ensuring the light filtering effect of the color resist 621, and the processing technology is simple.

[0084] S4, a cover plate 800 is fabricated on the transparent matrix 720, and a cavity structure is formed between the side of the color resist 621 facing away from the array substrate 100 and the cover plate 800.

[0085] 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.

[0086] The above provides a detailed description of a display panel and mobile terminal provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that, include: Array substrate; A pixel definition layer is disposed on the array substrate, and the pixel definition layer includes a plurality of first openings; The light-emitting functional layer includes an array of light-emitting pixels, each of which is correspondingly disposed within the first opening of the pixel definition layer; A color filter layer is disposed on the side of the light-emitting functional layer away from the array substrate. The color filter layer includes a black matrix and a color resist. The black matrix includes a second opening corresponding to the first opening, and the color resist is disposed corresponding to the second opening. A light-transmitting layer is disposed on the side of the color filter layer away from the light-emitting functional layer. The light-transmitting layer includes multiple light-transmitting portions and multiple transparent matrices. The transparent matrices are aligned with the black matrices. The light-transmitting portions are disposed between adjacent transparent matrices. The light-transmitting portions are aligned with the color resist. The refractive index of the light-transmitting portions is lower than the refractive index of the color resist. The area of ​​the transparent matrices is smaller than the area of ​​the black matrices. A cover plate is disposed on the side of the light-transmitting layer away from the color filter layer; Along the thickness direction of the color filter layer, the ratio of the sum of the heights of the black matrix and the transparent matrix to the height of the color resist is α, where 1≤α≤5; The color resist has a bevel and a plane on one side away from the array substrate. The plane is parallel to the array substrate, and the bevel connects the plane and the black matrix on one side away from the array substrate.

2. The display panel according to claim 1, characterized in that, The light-transmitting portion is air or transparent material filling the spaces between the transparent matrices.

3. The display panel according to claim 1, characterized in that, The transparent matrix is ​​made of a high-reflectivity material; And / or, the transparent matrix is ​​made of an adhesive material.

4. The display panel according to claim 1, characterized in that, The side of the color resist away from the light-emitting functional layer protrudes from the black matrix, and a cone angle β is formed between the side of the color resist away from the light-emitting functional layer and the black matrix, where 30°≤β<90°.

5. The display panel according to claim 1, characterized in that, The light-transmitting layer includes multiple stacked light-transmitting sub-layers. The light-transmitting sub-layers on the side opposite to the cover plate are disposed on the color filter layer. Each light-transmitting sub-layer has a light-transmitting part, which is aligned with the color filter.

6. The display panel according to claim 1, characterized in that, The light-transmitting part is configured one-to-one with the light-emitting pixel; Alternatively, the light-transmitting portion is configured corresponding to the light-emitting pixels in M ​​rows × N columns, and M and N are greater than or equal to 2.

7. The display panel according to claim 1, characterized in that, The light-transmitting layer is prepared using screen printing or inkjet printing.

8. A mobile terminal, characterized in that, It includes a display panel and a terminal body as described in any one of claims 1 to 7, wherein the terminal body and the display panel are integrated into one unit.

Images