CN117479617A - Display panel - Google Patents

Abstract

The application provides a display panel, this display panel includes the base plate, the light emitting device layer, the touch-control layer, color filter layer and filling layer, the light emitting device layer has a plurality of light emitting device, the touch-control layer sets up on the light emitting device layer, the touch-control layer includes inorganic insulating layer and touch-control metal level, the inorganic insulating layer includes the bellying that a plurality of intervals set up, the bellying overlaps with the light emitting device, the color filter layer has a plurality of filter units, filter unit wraps up the bellying that corresponds, filter unit has the opening that is located the bellying top, the filling layer fills the opening at least, because the refracting index of inorganic insulating layer is greater than filter unit's refracting index, the refracting index of filling layer is greater than filter unit's refracting index, make light can form the refraction in bellying and filter unit's interface department, or form total reflection in filter unit and filling layer's interface department, with this outgoing angle that reduces light, increase the light quantity, thereby can promote light emitting efficiency of light emitting device, the consumption of display panel is reduced.

Description

Display panel

Technical Field

The application relates to the technical field of display, in particular to a display panel.

Background

The display panel of the electronic device mainly comprises a liquid crystal display panel (liquid crystal display, LCD), a plasma display panel (plasma display panel, PDP), an organic electroluminescence (organic light emitting diode, OLED) display panel, an active-matrix organic electroluminescence (active-matrix organic light emitting diode, AMOLED) display panel and the like, and has a wide application range in products such as vehicles, mobile phones, tablets, computers, televisions and the like.

The polaroid can effectively reduce the reflectivity of the OLED display panel under strong light, but loses light emission close to 58%. This greatly increases the life burden of the OLED display panel; on the other hand, the polaroid has larger thickness and crisp material, and is not beneficial to the development of dynamic bending products.

The use of color filters (color filters) instead of Polarizers (POL) was attributed to the POL-less (depolarization) technique. The combination of the conventional direct on-cell touch (DOT) structure and the POL-less structure needs to consider the relative positional relationship between the DOT structure and the POL-less CF structure, if the DOT structure is disposed above the POL-less structure, although the transmittance of the POL-less is increased, the reflectivity of the metal mesh wire of the touch metal layer in the DOT structure to the external environment light is high, and the reflectivity of the display under sunlight is still high, even the shadow of the metal mesh wire is seen, so that the user experience is affected. If the DOT structure is to be arranged below the POL-less structure, the black matrix can shield the metal mesh wire of the DOT structure, but because the distance between the POL-less structure and the light emitting device is larger and the packaging layer and the DOT structure are larger, the light can be mostly absorbed or blocked by the black matrix, so that the transmittance of the display is seriously affected, and in order to ensure the display effect of the display panel, the brightness of the display panel can only be increased, but the power consumption of the display panel can be greatly increased.

Therefore, it is necessary to provide a display panel to improve this defect.

Disclosure of Invention

The embodiment of the application provides a display panel, which can improve the light emitting efficiency of a light emitting device and reduce the power consumption of the display panel.

Embodiments of the present application provide a display panel including:

a substrate;

a light emitting device layer disposed on the substrate, the light emitting device layer having a plurality of light emitting devices;

the touch control layer is arranged on the light-emitting device layer, the touch control layer comprises an inorganic insulating layer and a touch control metal layer arranged on the inorganic insulating layer, the inorganic insulating layer comprises a plurality of protruding parts which are arranged at intervals, and the orthographic projection of the protruding parts on the substrate is overlapped with the orthographic projection of the light-emitting device on the substrate;

a color filter layer having a plurality of filter units, each of the filter units surrounding a corresponding one of the protrusions, the filter unit having an opening above the protrusion, the inorganic insulating layer having a refractive index greater than that of the filter unit; and

and the filling layer at least fills the opening, and the refractive index of the filling layer is larger than that of the filtering unit.

According to an embodiment of the present application, the front projection of the light filtering unit on the substrate is staggered from the front projection of the light emitting device on the substrate, and surrounds the front projection of the light emitting device on the substrate.

According to an embodiment of the present application, an included angle between the side wall of the protruding portion and a surface of the protruding portion, which is close to the light emitting device, is an acute angle, and the width of the protruding portion gradually decreases from one end, which is close to the light emitting device, to one end, which is far away from the light emitting device.

According to an embodiment of the present application, an included angle between a side wall of the protruding portion and a surface of the protruding portion near the light emitting device is greater than or equal to 5 degrees and less than or equal to 80 degrees.

According to an embodiment of the present application, an included angle between the side wall of the opening and the bottom surface of the opening is an obtuse angle, and the width of the opening gradually increases from one end close to the light emitting device to one end far away from the light emitting device.

According to an embodiment of the present application, the protruding portion includes a first portion and a second portion, the second portion is disposed on a surface of the first portion facing away from the substrate, the inorganic insulating layer includes a first inorganic insulating layer and a second inorganic insulating layer, the second inorganic insulating layer is disposed on a surface of the first inorganic insulating layer facing away from the substrate, the first portion and the first inorganic insulating layer are made of the same material and disposed in the same layer, and the second portion and the second inorganic insulating layer are made of the same material and disposed in the same layer;

wherein the refractive index of the first inorganic insulating layer is greater than or equal to the refractive index of the second inorganic insulating layer.

According to an embodiment of the present application, the refractive indexes of the first inorganic insulating layer and the second inorganic insulating layer are equal, and the refractive indexes of the first inorganic insulating layer and the second inorganic insulating layer are greater than or equal to 1.6 and less than or equal to 1.8.

According to an embodiment of the present application, the refractive index of the first inorganic insulating layer is greater than or equal to 1.6 and less than or equal to 1.8, and the refractive index of the second inorganic insulating layer is greater than or equal to 1.3 and less than or equal to 1.5.

According to an embodiment of the present application, the inorganic insulating layer further includes a bank disposed at the periphery of the protruding portion and between the filter units of different colors, the filter units filling a gap between the protruding portion and the bank;

the front projection of the dykes and dams on the substrate and the front projection of the light emitting devices on the substrate are staggered, and the touch metal layer is arranged on the dykes and dams.

According to an embodiment of the application, the display panel further comprises a light shielding layer, wherein the light shielding layer is arranged on the dam and is positioned on one side, away from the substrate, of the touch metal layer;

the orthographic projection of the shading layer on the substrate covers the orthographic projection of the touch metal layer on the substrate.

The beneficial effects of the embodiment of the application are that: the embodiment of the application provides a display panel, the display panel comprises a substrate, a light emitting device layer, a touch layer, a color filter layer and a filling layer, wherein the light emitting device layer is arranged on the substrate, the light emitting device layer is provided with a plurality of light emitting devices, the touch layer is arranged on the light emitting device layer, the touch layer comprises an inorganic insulating layer and a touch metal layer arranged on the inorganic insulating layer, the inorganic insulating layer comprises a plurality of protruding parts which are arranged at intervals, the orthographic projection of the protruding parts on the substrate overlaps with the orthographic projection of the light emitting devices on the substrate, the color filter layer is provided with a plurality of filter units, each filter unit surrounds a corresponding protruding part, the filter unit is provided with an opening positioned above the protruding part, and the filling layer at least fills the opening; on the one hand, the refractive index of the inorganic insulating layer is larger than that of the light filtering unit, so that part of light rays can be refracted at the interface of the protruding part and the light filtering unit, the emergent angle of the part of light rays is reduced, and the emergent light quantity is increased; on the other hand, the refractive index of the filling layer is larger than that of the light filtering unit, so that partial light can form total reflection at the interface of the light filtering unit and the filling layer, the emergent angle of the partial light is reduced, the emergent quantity of the light is further increased, the emergent efficiency of the light emitting device is improved, and the power consumption of the display panel is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 2 is a top view of a light filtering unit and a light emitting device provided in an embodiment of the present application;

FIG. 3 is a schematic view of an optical path provided by an embodiment of the present application;

fig. 4a to fig. 4b are schematic flow chart structures of a manufacturing method of a display panel according to an embodiment of the present application.

Detailed Description

The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments that can be used to practice the present application. The directional terms mentioned in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., are only referring to the directions of the attached drawings. Accordingly, directional terminology is used to describe and understand the application and is not intended to be limiting of the application. In the drawings, like elements are designated by like reference numerals.

The present application is further described below with reference to the drawings and specific examples.

The embodiment of the application provides a display panel, which can improve the light emitting efficiency of a light emitting device and reduce the power consumption of the display panel.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present application, where the display panel includes a substrate 1, a light emitting device layer 2 and a touch layer 3, the light emitting device layer 2 is disposed on the substrate 1, and the touch layer 3 is disposed on the light emitting device layer 2.

The light emitting device layer 2 is disposed on the substrate 1, which may mean that the light emitting device layer 2 is located above the substrate 1, and an organic layer or an inorganic layer may be interposed between the light emitting device layer 2 and the substrate 1; it may also be referred to that the light emitting device layer 2 is located above the substrate 1, the light emitting device layer 2 being in direct contact with the surface of the substrate 1.

In the embodiment of the present application, the substrate 1 is an array substrate, the substrate 1 may include a substrate and a driving circuit layer disposed on the substrate, where the driving circuit layer has a pixel driving circuit for driving the light emitting device 20 in the light emitting device layer 2 to emit light, and the pixel driving circuit may be composed of a thin film transistor, a capacitor, a data line, a scan line, and the like, and the film structure of the driving circuit layer may refer to an existing display panel, which is not limited herein. The light emitting device layer 2 is arranged on the side of the drive circuit layer facing away from the substrate.

The light emitting device layer 2 may include a plurality of light emitting devices 20, and the plurality of light emitting devices 20 are distributed in an array on the substrate 1 in an arrangement of pixels. In an embodiment of the present application, the light emitting device is an organic light emitting diode. In other embodiments, the type of light emitting device is not limited to organic light emitting diodes, but may be Mini light emitting diode (Mini-LED) or Micro light emitting diode (Micro-LED) chips.

In one embodiment, as shown in fig. 1, the light emitting device layer 2 includes a plurality of first light emitting devices 21, a plurality of second light emitting devices 22, and a plurality of third light emitting devices 23, and the first light emitting devices 21 are different in color from the second light emitting devices 22 and the third light emitting devices 23. For example, the first light emitting device 21 emits red light, the second light emitting device 22 emits green light, and the third light emitting device 23 emits blue light. In practical applications, the color of the light emitted by the light emitting device is not limited to the three colors of red, green and blue in the above examples, but may be other colors, for example, the light emitting device may also emit white light, purple light or yellow light, etc., which is not limited herein.

It should be noted that, the touch layer 3 is disposed on the light emitting device layer 2, which means that the touch layer 3 is located above the light emitting device layer 2, and the space between the touch layer 3 and the light emitting device layer 2 is partitioned by an encapsulation layer, an organic layer or an inorganic layer.

In the embodiment of the present application, as shown in fig. 1, the display panel further includes an encapsulation layer 4, where the encapsulation layer 4 is disposed between the light emitting device layer 2 and the touch control layer 3. The encapsulation layer 4 may be a thin film encapsulation structure formed by laminating an inorganic layer and an organic layer. For example, the encapsulation layer 4 may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked in this order, and the materials of the first inorganic encapsulation layer and the second inorganic encapsulation layer may be, but are not limited to, transparent inorganic materials such as silicon nitride, silicon oxide, or silicon oxynitride.

In other embodiments, a planarization layer (not shown in the drawings) may be further disposed on the encapsulation layer 4, and the touch layer 3 may be disposed on a surface of the planarization layer facing away from the encapsulation layer 4, where the planarization layer may ensure the flatness of the touch layer 3.

The display panel further comprises a color filter layer 5, wherein the color filter layer 5 is provided with a plurality of filter units 50, and the plurality of filter units 50 are distributed in an array according to a pixel arrangement mode. Each light emitting device 20 has a corresponding filter unit 50, that is, the light emitting side of each light emitting device 20 has a filter unit 50 with the same color as the light emitted therefrom, and the color filter layer 5 can replace the polarizer and perform the same function as the polarizer.

In the embodiment of the present application, referring to fig. 1, the color filter layer 5 includes a first filter unit 51, a second filter unit 52, and a third filter unit 53. Taking the first filter unit 51 as an example, the first filter unit 51 is disposed on the light emitting side of the first light emitting device 21, the first light emitting device 21 emits red light, the first filter unit 51 is a red filter unit, the material of the first filter unit 51 is red photoresist, and the first filter unit 51 can transmit red light. The second filter unit 52 is a green filter unit, the material of the second filter unit 52 is a green photoresist, the third filter unit 53 is a blue filter unit, and the material of the third filter unit 53 is a blue photoresist.

Referring to fig. 1, the touch layer 3 includes an inorganic insulating layer 31 and a touch metal layer 32, the touch metal layer 32 is disposed on the inorganic insulating layer 31, and the touch metal layer 32 may have a touch electrode and a touch signal trace. The inorganic insulating layer 31 has a plurality of protruding portions 311 arranged at intervals, the protruding portions 311 being in the shape of a boss, and the orthographic projection of each protruding portion 311 on the substrate 1 overlaps with the orthographic projection of a corresponding one of the light emitting devices 20 on the substrate 1.

As shown in fig. 1 and fig. 2 in combination, fig. 2 is a top view of a light filtering unit and a light emitting device provided in an embodiment of the present application, each light filtering unit 50 surrounds a corresponding one of the protruding portions 311, the light filtering unit 50 has an opening 501 located above the protruding portion 311, the opening 501 penetrates the light filtering unit 50 in the thickness direction of the display panel, and the bottom of the opening 501 is a surface of the protruding portion 311 facing away from the light emitting device 20, that is, a middle area above the protruding portion 311 is not covered with the light filtering unit 50.

In the embodiment of the present application, the refractive index of the inorganic insulating layer 31 is greater than that of the filter unit 50. The protrusion 311 may be formed of the inorganic insulating layer 31 by etching, and since the protrusion 311 is a part of the inorganic insulating layer 31, the refractive index of the protrusion 311 is also greater than that of the filter unit 50.

As shown in fig. 1 and 3, taking the first light emitting device 21 as an example, since the refractive index of the protruding portion 311 is greater than that of the light filtering unit 50, the light (1) emitted by the first light emitting device 21 is refracted at the interface between the protruding portion 311 and the light filtering unit 50, the refraction angle is greater than the incident angle, and the emergent angle of the light (1) is reduced, so that the emergent light quantity of the emergent light with a small angle can be increased, thereby improving the luminous efficiency of the light emitting device 20 and reducing the power consumption of the display panel. Effects at other light emitting devices (e.g., the second light emitting device 22 and the third light emitting device 23) may refer to the first light emitting device 21, which is not limited herein.

In some embodiments, the protruding portion 311 includes a first portion 3111 and a second portion 3112, the second portion 3112 being disposed on a surface of the first portion 3111 facing away from the substrate 1, the material and refractive index of the first portion 3111 and the second portion 3112 being the same.

In some embodiments, the materials of the first portion 3111 and the second portion 3112 are silicon nitride, and the refractive indexes of the first portion 3111 and the second portion 3112 are greater than or equal to 1.6 and less than or equal to 1.8, and the refractive index of the filter unit 50 is greater than or equal to 1.3 and less than or equal to 1.5, i.e., the first filter unit 51, the second filter unit 52, and the third filter unit 53 are each between 1.3 and 1.5.

For example, in one embodiment, the refractive index of the first portion 3111 and the second portion 3112 is 1.6, the refractive index of the first filter unit 51 is 1.3, the refractive index of the second filter unit 52 is 1.4, and the refractive index of the third filter unit 53 is 1.5; in another embodiment, the refractive index of the first portion 3111 and the second portion 3112 is 1.7, the refractive index of the first filter unit 51 is 1.4, the refractive index of the second filter unit 52 is 1.5, and the refractive index of the third filter unit 53 is 1.4; in another embodiment, the refractive index of the first portion 3111 and the refractive index of the second portion 3112 are both 1.8, the refractive index of the first filter unit 51 is 1.5, the refractive index of the second filter unit 52 is 1.3, and the refractive index of the third filter unit 53 is 1.3.

Further, the inorganic insulating layer 31 includes a first inorganic insulating layer 3101 and a second inorganic insulating layer 3102, and the first portion 3111 is formed of the same material and the same layer as the first inorganic insulating layer 3101, i.e., the first portion 3111 and the first inorganic insulating layer 3101 may be formed by the same chemical vapor deposition process, and the second portion 3112 is formed of the same material and the same layer as the second inorganic insulating layer 3102, i.e., the second portion 3112 and the second inorganic insulating layer 3102 may be formed by the same chemical vapor deposition process.

In some embodiments, the material of the first portion 3111 is different from the material of the second portion 3112, and the refractive index of the first portion 3111 is different from the refractive index of the second portion 3112.

In some embodiments, the material of the first portion 3111 is silicon nitride, the refractive index of the first portion 3111 is greater than or equal to 1.6 and less than or equal to 1.8, the material of the second portion 3112 is silicon oxide, and the refractive index of the second portion 3112 is greater than or equal to 1.3 and less than or equal to 1.5. With this configuration, by making the refractive index of the second portion 3112 smaller than that of the first portion 3111, the light emitted from the light emitting device 20 can be refracted at the interface between the first portion 3111 and the second portion 3112, so as to reduce the light emission angle, and the light can be refracted again when passing through the interface between the protruding portion 311 and the filter unit 50, so as to further reduce the light emission angle, thereby further increasing the light emission amount of the light with a small angle and improving the light emission efficiency of the light emitting device 20.

For example, in one embodiment, the refractive index of the first portion 3111 is 1.6 and the refractive index of the second portion 3112 is 1.4; in another embodiment, the refractive index of the first portion 3111 is 1.7, and the refractive index of the second portion 3112 is 1.5; in another embodiment, the refractive index of the first portion 3111 is 1.8, and the refractive index of the second portion 3112 is 1.3.

Further, in the structure in which the materials and refractive indices of the first portion 3111 and the second portion 3112 are different, the materials and refractive indices of the first inorganic insulating layer 3101 and the second inorganic insulating layer 3102 are also different. For example, the material of the first inorganic insulating layer 3101 and the first portion 3111 is silicon nitride, and the material of the second insulating layer 3102 and the second portion 3112 is silicon oxide.

In one embodiment, each of the protruding portions 311 is disposed opposite to a corresponding one of the light emitting devices 20 in the thickness direction of the display panel, and the front projection of each of the protruding portions 311 on the substrate 1 covers the front projection of the corresponding one of the light emitting devices 20 on the substrate 1, that is, the size of the protruding portion 311 is larger than the size of the corresponding light emitting device.

In one embodiment, the front projection of the filter unit 50 on the substrate 1 is offset from the front projection of the light emitting device 20 on the substrate 1 and surrounds the front projection of the light emitting device 20 on the substrate 1.

As shown in fig. 1 and 2, taking the first filter unit 51 and the first light emitting device 21 as an example, the front projection of the first filter unit 51 on the substrate 1 and the front projection of the first light emitting device 21 on the substrate 1 are staggered, that is, the front projection of the first filter unit 51 on the substrate 1 and the front projection of the first light emitting device 21 on the substrate 1 do not overlap, and a certain gap is formed between the front projection of the first filter unit 51 and the front projection of the first light emitting device 21 on the substrate 1.

The front projection of the first filter unit 51 on the substrate 1 is in a ring shape, and the area surrounded by the middle of the ring shape is the front projection of the opening 501 on the substrate 1. The front projection of the first filter unit 51 onto the substrate 1 completely encloses the front projection of the first light emitting device 21 onto the substrate 1, i.e. the front projection of the opening 501 onto the substrate 1 completely covers the front projection of the first light emitting device 21 onto the substrate 1. With this structure, part of the light emitted from the first light emitting device 21 can be directly emitted through the opening 501, and is prevented from being blocked by the first filter unit 51, so that the light transmittance of the color filter layer 5 can be improved.

Further, the display panel further includes a filling layer 6, the filling layer 6 at least fills the opening 501, and a refractive index of the filling layer 6 is larger than a refractive index of the filter unit 50.

In one embodiment, referring to fig. 1, the display panel further includes a filling layer 6, the filling layer 6 is made of a transparent organic material, the filling layer 6 is disposed on the color filter layer 5, and the openings 501 are filled.

As shown in fig. 1 and fig. 3, taking the second light filtering unit 52 and the second light emitting device 22 as an example, since the refractive index of the filling layer 6 is greater than that of the second light filtering unit 52, the light (2) emitted by the second light emitting device 22 is fully emitted at the interface between the filling layer 6 and the second light filtering unit 52, and the emergent angle of the light (2) is reduced, so that the emergent amount of light of the light with a small angle can be further increased, and the emergent efficiency of the light emitting device is improved. The effect of the other filtering units may refer to the second filtering unit 52, and will not be described herein.

For example, in a specific embodiment, the refractive index of the filling layer 6 is 1.55, the refractive index of the first filter unit 51 is 1.3, the refractive index of the second filter unit 52 is 1.4, and the refractive index of the third filter unit 53 is 1.5; in another embodiment, the refractive index of the filling layer 6 is 1.6, the refractive index of the first filter unit 51 is 1.4, the refractive index of the second filter unit 52 is 1.5, and the refractive index of the third filter unit 53 is 1.4; in another embodiment, the refractive index of the filling layer 6 is 1.7, the refractive index of the first filter unit 51 is 1.5, the refractive index of the second filter unit 52 is 1.3, and the refractive index of the third filter unit 53 is 1.3. In practical applications, the refractive index of the filling layer 6 is not limited to the above embodiment, and the refractive index of the filling layer 6 only needs to be greater than 1.5.

In some embodiments, the angle α between the sidewall of the protruding portion 311 and the surface of the protruding portion 311 near the light emitting device 20 is an acute angle, and the width of the protruding portion 311 gradually decreases from one end near the light emitting device 20 to one end far from the light emitting device 20, and the cross-sectional shape of the protruding portion 311 at the viewing angle shown in fig. 1 is trapezoidal. With this structure, it is possible to ensure that light emitted from the light emitting device 20 is refracted at the interface of the side wall of the convex portion 311 and the filter unit 50 and to reduce the exit angle.

In a specific embodiment, the angle α between the sidewall of the protruding portion 311 and the surface of the protruding portion 311 near the light emitting device 20 is 30 degrees.

In other embodiments, the included angle α between the side wall of the protruding portion 311 and the surface of the protruding portion 311 near the light emitting device 20 is not limited to 30 degrees, but may be 5 degrees, 15 degrees, 45 degrees, 60 degrees, 75 degrees, or 80 degrees, and the like, where the included angle α between the side wall of the protruding portion 311 and the surface of the protruding portion 311 near the light emitting device 20 is only greater than or equal to 5 degrees and less than or equal to 80 degrees, so as to avoid affecting the light emitting angle.

In some embodiments, the included angle β between the side wall of the opening 501 and the bottom surface of the opening 501 is an obtuse angle, and the width of the opening 501 gradually increases from the end near the light emitting device 20 to the end far from the light emitting device, and the cross-sectional shape of the opening 501 under the view angle shown in fig. 1 is an inverted trapezoid.

In one embodiment, the angle β between the sidewall of the opening 501 and the bottom surface of the opening 501 is 120 degrees. In other embodiments, the included angle β between the side wall of the opening 501 and the bottom surface of the opening 501 is not limited to 120 degrees in the above embodiments, but may be 100 degrees, 130 degrees, 145 degrees, 150 degrees, or the like, and only greater than or equal to 100 degrees and less than or equal to 150 degrees are required to ensure that a portion of the light emitted from the light emitting device 20 can be totally reflected at the interface between the filter unit 50 and the filling layer 6.

In some embodiments, referring to fig. 1, the inorganic insulating layer 31 further includes a dam 312, the dam 312 is disposed at the periphery of the protruding portion 311 and is located between the light filtering units 50 with different colors, a gap is formed between the dam 312 and the protruding portion 311, the gap between the dam 312 and the protruding portion 311 has an inverted trapezoid shape in a cross-section of the view angle shown in fig. 1, the light filtering units 50 fill the gap between the dam 312 and the protruding portion 311, and one end of the light filtering unit 50 facing away from the light emitting device 20 protrudes from one end of the protruding portion 311 and the dam 312 facing away from the light emitting device 20.

Referring to fig. 1, a dam 312 is disposed between the first filter unit 51 and the second filter unit 52, the dam 312 separates the first filter unit 51 and the second filter unit 52, a dam 312 is also disposed between the second filter unit 52 and the third filter unit 53, and the dam 312 separates the second filter unit 52 and the third filter unit 53.

In some embodiments, the front projection of the dam 312 on the substrate 1 is staggered from the front projection of the light emitting device 20 on the substrate 1, and the touch metal layer 32 is disposed on the dam 312.

Referring to fig. 1, the offset arrangement of the front projection of the dam 312 on the substrate 1 and the front projection of the light emitting device 20 on the substrate 1 means that: the front projection of the dam 312 on the substrate 1 does not overlap with the front projection of the light emitting device 20 on the substrate 1, and the front projection of the dam 312 on the substrate 1 is located between the front projection staggers of the adjacent light emitting devices 20 on the substrate 1.

In some embodiments, the dam 312 includes a third portion 3121 and a fourth portion 3122, the fourth portion 3122 being disposed on a surface of the third portion 3121 facing away from the substrate 1, the materials and refractive indices of the third portion 3121 and the fourth portion 3122 being the same. In other embodiments, the materials and refractive indices of the third portion 3121 and the fourth portion 3122 are different.

In a specific embodiment, the third portion 3121 is formed of the same material and the same layer as the first inorganic insulating layer 3101, i.e., the third portion 3121 and the first inorganic insulating layer 3101 may be formed by the same chemical vapor deposition process, and the fourth portion 3122 is formed of the same material and the same layer as the second inorganic insulating layer 3102, i.e., the fourth portion 3122 and the second inorganic insulating layer 3102 may be formed by the same chemical vapor deposition process. The materials and refractive indices of the first inorganic insulating layer 3101 and the second inorganic insulating layer 3102 may be referred to above, and will not be described here again.

In some embodiments, the touch layer 3 may be a self-capacitance type touch structure or a mutual capacitance type touch structure. The touch metal layer 32 may include a first touch metal layer 321 and a second touch metal layer 322, where the second touch metal layer 322 is disposed on a side of the first touch metal layer 321 facing away from the substrate 1.

In an embodiment, referring to fig. 1, the first touch metal layer 321 is disposed on a surface of the third portion 3121 facing away from the substrate 1, the second touch metal layer 322 is disposed on a surface of the fourth portion 3122 facing away from the substrate 1, and touch electrodes or touch signal traces may be disposed in both the first touch metal layer 321 and the second touch metal layer 322.

In some embodiments, the display panel further includes a light shielding layer 7, where the light shielding layer 7 is disposed on the dam 312 and is located on a side of the touch metal layer 32 facing away from the substrate 1, and an orthographic projection of the light shielding layer 7 on the substrate 1 covers an orthographic projection of the touch metal layer 32 on the substrate 1.

In a specific embodiment, as shown in fig. 1, the light shielding layer 7 may also be referred to as a black matrix, i.e. the material of the light shielding layer 7 is black photoresist or black ink. The light shielding layer 7 is disposed on the surface of the fourth portion 3122 facing away from the substrate 1 and covers the second touch metal layer 322, where the light shielding layer 7 is further disposed between adjacent filter units 50 of different colors, and the light shielding layer 7 can space the adjacent filter units 50 of different colors, so that color mixing of adjacent light emitting devices 20 can be avoided. The front projection of the light shielding layer 7 on the substrate 1 may cover the front projection of the first touch metal layer 321 and the second touch metal layer 322 on the substrate 1. Under this structure, because the reflectivity of the light shielding layer 7 is lower, the light shielding layer 7 is utilized to cover the touch metal layer 32, so that the reflection of the touch metal layer 32 to the external environment light can be reduced, and the visual effect of the touch metal layer 32 can be hidden by a solid shadow.

According to the display panel provided by the foregoing embodiment, the embodiment of the present application further provides a method for manufacturing a display panel, and as shown in fig. 4a and fig. 4b, fig. 4a to fig. 4b are schematic flow structure diagrams of the method for manufacturing a display panel provided by the embodiment of the present application, where the method for manufacturing a display panel includes:

step S1: sequentially manufacturing a light-emitting device layer 2 and a touch control layer 3 on a substrate 1, wherein the light-emitting device layer 2 is provided with a plurality of light-emitting devices 20, and the touch control layer 3 comprises an inorganic insulating layer 31 and a touch control metal layer 32 arranged on the inorganic insulating layer 31;

step S2: patterning the inorganic insulating layer 31 to form a plurality of protruding portions 311 arranged at intervals, wherein the orthographic projection of the protruding portions 311 on the substrate 1 overlaps with the orthographic projection of the light emitting device 20 on the substrate 1;

step S3: forming a color filter layer 5 on the touch side layer 3, wherein the color filter layer 5 comprises a plurality of filter units 50, each filter unit 50 surrounds a corresponding protruding portion 311, and the filter unit 50 has an opening 501 above the protruding portion 311;

step S4: a filling layer 6 is formed on the color filter layer 5, the filling layer 6 filling at least the opening 501.

In the embodiment of the present application, the refractive index of the inorganic insulating layer 31 is greater than that of the filter unit 50. The protrusion 311 may be formed of the inorganic insulating layer 31 by etching, and since the protrusion 311 is a part of the inorganic insulating layer 31, the refractive index of the protrusion 311 is also greater than that of the filter unit 50.

As shown in fig. 1 and 3, taking the first light emitting device 21 as an example, since the refractive index of the protruding portion 311 is greater than that of the light filtering unit 50, the light (1) emitted by the first light emitting device 21 is refracted at the interface between the protruding portion 311 and the light filtering unit 50, the refraction angle is greater than the incident angle, and the emergent angle of the light (1) is reduced, so that the emergent light quantity of the emergent light with a small angle can be increased, thereby improving the luminous efficiency of the light emitting device 20 and reducing the power consumption of the display panel. Effects at other light emitting devices (e.g., the second light emitting device 22 and the third light emitting device 23) may refer to the first light emitting device 21, which is not limited herein.

In the embodiment of the present application, the refractive index of the filling layer 6 is larger than that of the filter unit 50. Taking the second light filtering unit 52 and the second light emitting device 22 as an example, since the refractive index of the filling layer 6 is greater than that of the second light filtering unit 52, the light (2) emitted by the second light emitting device 22 is fully emitted at the interface between the filling layer 6 and the second light filtering unit 52, and the emergent angle of the light (2) is reduced, so that the emergent amount of light with a small angle can be further increased, and the emergent efficiency of the light emitting device is improved. The effect of the other filtering units may refer to the second filtering unit 52, and will not be described herein.

In one embodiment, the filler layer 6 only fills the opening 501. In other embodiments, the filler layer 6 not only fills the openings 501, but also covers the color filter layer 50.

In one embodiment, in step S2, a plurality of banks 312 are formed at intervals along with the formation of the protruding portion 311, the banks 312 are disposed at the periphery of the protruding portion 311 and between the filter units 50 of different colors, and the filter units 50 fill the gaps between the protruding portion 311 and the banks 312.

In this embodiment, the materials, refractive indexes and structures of the protruding portion 311, the dam 312 and the inorganic insulating layer 31 can be referred to the previous embodiments of the display panel, and will not be described herein.

In one embodiment, the method for manufacturing the display panel further includes, before manufacturing the filling layer 6: a light shielding layer 7 is formed on the dam 312, the light shielding layer 7 is located on one side of the touch metal layer 32 away from the substrate 1, and the orthographic projection of the light shielding layer 7 on the substrate 1 covers the orthographic projection of the touch metal layer 32 on the substrate 1.

Specifically, the light shielding layer 7 may also be referred to as a black matrix, i.e., the material of the light shielding layer 7 is black resist or black ink. The light shielding layer 7 is disposed on the surface of the fourth portion 3122 facing away from the substrate 1 and covers the second touch metal layer 322, where the light shielding layer 7 is further disposed between adjacent filter units 50 of different colors, and the light shielding layer 7 can space the adjacent filter units 50 of different colors, so that color mixing of adjacent light emitting devices 20 can be avoided. The front projection of the light shielding layer 7 on the substrate 1 may cover the front projection of the first touch metal layer 321 and the second touch metal layer 322 on the substrate 1. Under this structure, because the reflectivity of the light shielding layer 7 is lower, the light shielding layer 7 is utilized to cover the touch metal layer 32, so that the reflection of the touch metal layer 32 to the external environment light can be reduced, and the visual effect of the touch metal layer 32 can be hidden by a solid shadow.

The beneficial effects of the embodiment of the application are that: the embodiment of the application provides a display panel, the display panel comprises a substrate, a light emitting device layer, a touch layer, a color filter layer and a filling layer, wherein the light emitting device layer is arranged on the substrate, the light emitting device layer is provided with a plurality of light emitting devices, the touch layer is arranged on the light emitting device layer, the touch layer comprises an inorganic insulating layer and a touch metal layer arranged on the inorganic insulating layer, the inorganic insulating layer comprises a plurality of protruding parts which are arranged at intervals, the orthographic projection of the protruding parts on the substrate overlaps with the orthographic projection of the light emitting devices on the substrate, the color filter layer is provided with a plurality of filter units, each filter unit surrounds a corresponding protruding part, the filter unit is provided with an opening positioned above the protruding part, and the filling layer at least fills the opening; on the one hand, the refractive index of the inorganic insulating layer is larger than that of the light filtering unit, so that part of light rays can be refracted at the interface of the protruding part and the light filtering unit, the emergent angle of the part of light rays is reduced, and the emergent light quantity is increased; on the other hand, the refractive index of the filling layer is larger than that of the light filtering unit, so that partial light can form total reflection at the interface of the light filtering unit and the filling layer, the emergent angle of the partial light is reduced, the emergent quantity of the light is further increased, the emergent efficiency of the light emitting device is improved, and the power consumption of the display panel is reduced.

In summary, although the present application discloses the preferred embodiments, the preferred embodiments are not intended to limit the application, and those skilled in the art can make various modifications and alterations without departing from the spirit and scope of the application, so the scope of the application is defined by the claims.

Claims (10)

1. A display panel, comprising:

a substrate;

a light emitting device layer disposed on the substrate, the light emitting device layer having a plurality of light emitting devices;

the touch control layer is arranged on the light-emitting device layer, the touch control layer comprises an inorganic insulating layer and a touch control metal layer arranged on the inorganic insulating layer, the inorganic insulating layer comprises a plurality of protruding parts which are arranged at intervals, and the orthographic projection of the protruding parts on the substrate is overlapped with the orthographic projection of the light-emitting device on the substrate;

a color filter layer having a plurality of filter units, each of the filter units surrounding a corresponding one of the protrusions, the filter unit having an opening above the protrusion, the inorganic insulating layer having a refractive index greater than that of the filter unit; and

and the filling layer at least fills the opening, and the refractive index of the filling layer is larger than that of the filtering unit.

2. The display panel of claim 1, wherein the front projection of the filter unit on the substrate is offset from the front projection of the light emitting device on the substrate and surrounds the front projection of the light emitting device on the substrate.

3. The display panel according to claim 1, wherein an angle between a side wall of the convex portion and a surface of the convex portion near the light emitting device is an acute angle, and a width of the convex portion gradually decreases from an end near the light emitting device to an end far from the light emitting device.

4. The display panel of claim 3, wherein an angle between a sidewall of the protrusion and a surface of the protrusion near the light emitting device is greater than or equal to 5 degrees and less than or equal to 80 degrees.

5. The display panel of claim 1, wherein an included angle between a side wall of the opening and a bottom surface of the opening is an obtuse angle, and a width of the opening gradually increases from an end near the light emitting device to an end far from the light emitting device.

6. The display panel according to claim 1, wherein the convex portion includes a first portion and a second portion, the second portion is disposed on a surface of the first portion facing away from the substrate, the inorganic insulating layer includes a first inorganic insulating layer and a second inorganic insulating layer, the second inorganic insulating layer is disposed on a surface of the first inorganic insulating layer facing away from the substrate, the first portion is made of the same material and is disposed in the same layer as the first inorganic insulating layer, and the second portion is made of the same material and is disposed in the same layer as the second inorganic insulating layer;

wherein the refractive index of the first inorganic insulating layer is greater than or equal to the refractive index of the second inorganic insulating layer.

7. The display panel according to claim 6, wherein the first inorganic insulating layer and the second inorganic insulating layer have refractive indices equal to each other, and wherein the refractive indices of the first inorganic insulating layer and the second inorganic insulating layer are each greater than or equal to 1.6 and less than or equal to 1.8.

8. The display panel according to claim 6, wherein a refractive index of the first inorganic insulating layer is greater than or equal to 1.6 and less than or equal to 1.8, and a refractive index of the second inorganic insulating layer is greater than or equal to 1.3 and less than or equal to 1.5.

9. The display panel according to claim 1, wherein the inorganic insulating layer further includes banks disposed at the periphery of the convex portions between the filter units of different colors, the filter units filling gaps between the convex portions and the banks;

the front projection of the dykes and dams on the substrate and the front projection of the light emitting devices on the substrate are staggered, and the touch metal layer is arranged on the dykes and dams.

10. The display panel of claim 9, further comprising a light shielding layer disposed on the dam and on a side of the touch metal layer facing away from the substrate;

the orthographic projection of the shading layer on the substrate covers the orthographic projection of the touch metal layer on the substrate.