CN111863899B - Display panel and manufacturing method thereof - Google Patents
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- CN111863899B CN111863899B CN202010705317.0A CN202010705317A CN111863899B CN 111863899 B CN111863899 B CN 111863899B CN 202010705317 A CN202010705317 A CN 202010705317A CN 111863899 B CN111863899 B CN 111863899B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Abstract
The application provides a display panel and manufacturing method thereof, display panel include the luminescent layer with set up in touch-control functional layer and colored filter layer on the luminescent layer, the touch-control functional layer includes that many touch-controls are walked the line, through touch-control walking upper strata remains the light resistance layer, make set up in the high promotion of the black matrix on touch-control walking upper strata, the promotion of black matrix height is favorable to making the colored filtering unit in the colored filter layer gather between the black matrix, has reduced or has eliminated the risk that the appearance overlaps or mixes the colour between the adjacent colored filtering unit.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
With the progress of display technology, foldable or fully flexible display will become one of the main development directions of mobile terminals such as mobile phones, which requires that the display panel should have many advantages such as being lighter and thinner, and having stronger bending resistance. At present, technologies for realizing the lightness and thinness of a display panel mainly include a dot (direct On Cell touch) technology and a non-polarizer technology. The DOT technology is characterized in that elements with touch control functions are directly integrated on the surface of the display panel, so that the integrated design of a touch control unit and the display panel is realized, and the DOT technology has important significance for reducing the whole thickness of the display panel; the non-polarizer technology replaces the original polarizer structure with a color film structure manufactured on the upper layer of the display unit and plays a role of the polarizer structure.
The combination of DOT technology and non-polarizer technology is an effective way to achieve the lightness and thinness of the display panel. In the non-polarization technology, color filter blocks, namely color film structures, which correspond to the display units one by one are manufactured on the upper layers of the display units of the display panel, so as to filter the light rays of the display units; at present, methods for manufacturing a color film structure include a spin coating method and an inkjet printing method, but the color film structure manufactured by the two methods inevitably has the problem that filter materials are abnormally distributed between adjacent color filter blocks, and the problem is mainly represented as that the adjacent color filter blocks are excessively overlapped or mixed in color, so that the display quality of a display panel is seriously influenced.
Disclosure of Invention
Based on the above deficiencies in the prior art, the present application provides a display panel and a manufacturing method thereof, in which a photoresist layer disposed on an upper layer of a touch control trace is used to increase the height of a black matrix, so that color filter units are more easily gathered between the black matrices, and the risk of overlapping or color mixing between adjacent color filter units is reduced or eliminated.
The application provides a display panel, includes:
a light emitting layer including a plurality of light emitting cells;
the touch control functional layer is arranged on the luminous layer and comprises a plurality of touch control wires, and at least part of the touch control wires are provided with a light resistance layer;
The color filter layer is arranged on the touch control function layer and comprises black matrixes and color filter units arranged among the black matrixes, and the black matrixes cover the touch control wiring and the light resistance layer.
According to an embodiment of the present application, the side surface of the black matrix is double-stepped.
According to an embodiment of the present application, an included angle between the inclined surface of the side surface of the black matrix and the horizontal direction is less than or equal to 70 degrees.
According to an embodiment of the present application, the color filter unit corresponds to the light emitting unit up and down along the thickness direction of the display panel, and a vertical projection area of the color filter unit on the light emitting layer covers the light emitting unit.
According to an embodiment of the application, the touch-control wiring includes a first touch-control wiring arranged along a first direction and a second touch-control wiring arranged along a second direction, the touch-control functional layer includes a first inorganic layer arranged on the light-emitting layer, a bridging wiring arranged on the first inorganic layer, a second inorganic layer arranged on the first inorganic layer and covering the bridging wiring, and a first touch-control wiring and a second touch-control wiring arranged on the second inorganic layer, the first touch-control wiring passes through a via hole on the second inorganic layer and is electrically connected with the bridging wiring, and the photoresist layer is arranged on the surface of one side of the light-emitting layer away from the first touch-control wiring and the second touch-control wiring.
According to an embodiment of the present application, the touch traces include a third touch trace, the third touch trace is disposed on the light emitting layer, and the photoresist layer is disposed on a surface of the third touch trace away from the light emitting layer.
According to an embodiment of the present application, the display panel further includes a substrate, an array layer disposed between the substrate and the light emitting layer, a thin film encapsulation layer disposed between the light emitting layer and the touch functional layer, and a flat protection layer disposed on the color filter layer.
The application also provides a manufacturing method of the display panel, which comprises the following steps:
manufacturing an array layer and a light-emitting layer arranged on the array layer on a substrate;
manufacturing a metal layer and a light resistance layer covering the metal layer on the light emitting layer;
carrying out exposure and development operation on the photoresist layer;
etching the metal layer to form a touch wire with the same shape as the photoresist layer;
manufacturing a black matrix covering the touch wiring and the light resistance layer;
and forming color filter units between the black matrixes.
According to an embodiment of the present application, the touch traces include a first touch trace and a second touch trace, and the method for manufacturing the touch traces and the photoresist layer includes the following steps:
Manufacturing a first inorganic layer and a first metal layer on the first inorganic layer on the luminescent layer;
patterning the first metal layer to form a bridging line;
manufacturing a second inorganic layer covering the bridging trace and a second metal layer positioned on the second inorganic layer, so that the second metal layer is electrically connected with the bridging trace through a via hole on the second inorganic layer;
manufacturing a light resistance layer on the second metal layer;
carrying out exposure and development operation on the photoresist layer;
and etching the second metal layer to form a first touch wire extending along the first direction and a second touch wire extending along the second direction.
According to an embodiment of the application, the etching operation of the metal layer is performed simultaneously or later, and the outer surface of the photoresist layer is processed to form a black-philic matrix surface.
The beneficial effect of this application is: the display panel provided by the embodiment of the application comprises the touch control functional layer and the color filter layer which are arranged on the upper layer of the light emitting layer, the light resistance layer is reserved on the upper layer of the touch control wiring of the touch control functional layer, so that the height of the black matrix arranged on the upper layer of the touch control wiring is improved, the improvement of the height of the black matrix is favorable for promoting the color filter units in the color filter layer to be gathered between the black matrixes, and the risk of overlapping or color mixing between the adjacent color filter units is reduced or eliminated.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a perspective view of a display panel provided in an embodiment of the present application at a light emitting layer and a touch functional layer;
fig. 2 is a perspective view of a display panel provided in an embodiment of the present application on a color filter layer;
fig. 3 is a schematic cross-sectional structure diagram of a display panel provided in an embodiment of the present application;
fig. 4 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;
FIG. 5 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure;
fig. 6a is a schematic structural diagram of a display panel manufacturing method according to an embodiment of the present disclosure after a first metal layer is manufactured;
fig. 6b is a schematic structural diagram of a display panel manufacturing method according to an embodiment of the present disclosure after completing the bridging wires;
fig. 6c is a schematic structural diagram of the display panel manufacturing method according to the embodiment of the present application after the second metal layer is manufactured;
Fig. 6d is a schematic structural diagram of a display panel manufacturing method according to an embodiment of the present disclosure after a photoresist layer is manufactured;
fig. 6e is a schematic structural diagram after patterning the photoresist layer in the display panel manufacturing method according to the embodiment of the present application;
fig. 6f is a schematic structural diagram of the display panel manufacturing method according to the embodiment after the first touch traces and the second touch traces are manufactured;
fig. 6g is a schematic structural diagram of a display panel manufactured by the method according to the embodiment of the present disclosure after a black matrix is manufactured;
fig. 6h is a schematic structural diagram of a display panel manufacturing method according to an embodiment of the present disclosure after a color filter unit is manufactured;
fig. 6i is a schematic structural diagram of a display panel finally manufactured by the display panel manufacturing method according to the embodiment of the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
The embodiment of the application provides a display panel, including setting up touch-control functional layer and the colored filter layer in the luminescent layer upper strata, through the touch-control line upper strata at the touch-control functional layer and remaining the light resistance layer, make the height that sets up in the black matrix of touch-control line upper strata promote, the promotion of black matrix height is favorable to making the colored filtering unit among the colored filter layer gather between the black matrix, has reduced or has eliminated the risk that the overlapping appears or colour mixture between the adjacent colored filtering unit.
As shown in fig. 1 to fig. 3, fig. 1 is a perspective view of a display panel provided in an embodiment of the present application at a light emitting layer and a touch functional layer, fig. 2 is a perspective view of a display panel provided in an embodiment of the present application at a color filter layer, and fig. 3 is a schematic cross-sectional structure diagram of the display panel provided in an embodiment of the present application. The display panel 01 includes a substrate 10, an array layer 20 disposed on the substrate 10, a light emitting layer 30 disposed on the array layer 20, a touch functional layer 50 disposed on the light emitting layer 30, and a color filter layer 60 disposed on the touch functional layer 50. Optionally, the display panel 01 further includes a thin film encapsulation layer 40 disposed between the light emitting layer 30 and the touch functional layer 50, and a flat protection layer 70 disposed on the color filter layer 60, where the thin film encapsulation layer 40 is used for encapsulating and protecting the light emitting layer 30, and the flat protection layer 70 is used for encapsulating and protecting the color filter layer 60.
The light emitting layer 30 includes a plurality of light emitting units 31, and the light emitting units 31 may be organic light emitting diodes. Further, the light emitting unit 31 includes a red light emitting unit 311, a green light emitting unit 312, and a blue light emitting unit 313, and the red light emitting unit 311, the green light emitting unit 312, and the blue light emitting unit 313 are alternately distributed in the display panel 01 to realize color display of the display panel 01.
The touch functional layer 50 includes a plurality of touch traces, and optionally, the touch traces include a first touch trace 54 arranged along a first direction X and a second touch trace 55 arranged along a second direction Y; each of the light emitting units 31 is located in a space surrounded by the first touch trace 54 and the second touch trace 55; at least a portion of the first touch trace 54 and/or the second touch trace 55 is disposed with a photoresist layer 56. It should be noted that the light blocking layer 56 may be formed when the patterning process is performed on the first touch trace 54 and/or the second touch trace 55, and the light blocking layer 56 is reserved after the patterning process is completed on the first touch trace 54 and/or the second touch trace 55. Optionally, the thickness of the light blocking layer 56 is 1 micrometer to 3 micrometers, and the light blocking layer 56 covers the upper ends of the first touch traces 54 and/or the second touch traces 55.
The color filter layer 60 includes a black matrix 61 and a color filter unit 62 disposed between the black matrix 61, and the black matrix 61 covers the first touch trace 54, the second touch trace 55, and the photoresist layer 56 disposed on the upper layer of the touch trace. It should be noted that, by reserving the light blocking layer 56 on the upper layer of the touch trace and enabling the black matrix 61 to cover the touch trace and the light blocking layer 56, the presence of the light blocking layer 56 enables the black matrix 61 to have a larger height on the premise of having a smaller thickness, which is beneficial to setting the black matrix 61 and facilitating the color filter units 62 to gather between the black matrices 61, and reduces or eliminates the risk of overlapping or color mixing between adjacent color filter units 62.
Optionally, the side 611 of the black matrix 61 is double-stepped. It should be noted that, because the light resistance layer 56 is raised by the height of the touch trace, when the black matrix 61 is disposed on the light resistance layer 56, the black matrix 61 naturally forms a step at a height corresponding to the top end of the light resistance layer 56, so as to form a double-layer stepped structure of the side surface 611; the double-layer stepped structure of the side 611 forms a funnel-shaped accommodating cavity between adjacent black matrixes 61, which is beneficial for the color filter units 62 to gather in the accommodating cavity, and prevents the overlapping and color mixing of filter materials.
Optionally, an angle θ between the inclined surface 611a of the black matrix side surface 611 and the horizontal direction is less than or equal to 70 degrees. Thereby, the funnel-shaped receiving cavity formed between the adjacent black matrixes 61 has a larger opening, and the filter material is further prevented from overflowing the receiving cavity to cause the overlapping and color mixing of the color filter layer 62.
Optionally, the photoresist layer 56 is made of a black-philic matrix photoresist material, or the surface of the photoresist layer 56 is a black-philic matrix surface, for example, the surface of the photoresist layer 56 may be a rough surface, so as to improve the adhesion between the photoresist layer 56 and the black matrix 61.
Further, in the thickness direction of the display panel 01, the black matrix 61 is overlapped with the first touch trace 54 and the second touch trace 55, and the width of the black matrix 61 is greater than the width of the first touch trace 54 and the width of the second touch trace 55, so that the black matrix 61 completely shields the first touch trace 54 and the second touch trace 55, and light reflected by the first touch trace 54 and the second touch trace 55 is prevented from emitting out of the display panel to affect the display effect.
Further, along the thickness direction of the display panel 01, the color filter unit 62 is overlapped with the light emitting unit 31, and the size of the single color filter unit 62 is larger than that of the single light emitting unit 31, so that the color filter unit 62 completely covers the light emitting unit 31, and the light emitted by the light emitting unit 31 is filtered. Specifically, the color filter unit 62 includes a red filter unit 621, a green filter unit 622, and a blue filter unit 623, and along the thickness direction of the display panel 01, the red filter unit 621 vertically corresponds to the red light emitting unit 311, the green filter unit 622 vertically corresponds to the green light emitting unit 312, and the blue filter unit 623 vertically corresponds to the blue light emitting unit 313.
The thickness direction of the display panel 01 is a direction perpendicular to the substrate 10 of the display panel 01 and directed toward the flat protective layer 70 of the display panel 01.
Optionally, the touch functional layer 50 includes a first inorganic layer 51 disposed on the thin-film transistor layer 40, a bridging trace 52 disposed on the first inorganic layer 51, a second inorganic layer 53 disposed on the first inorganic layer 51 and covering the bridging trace 52, and the first touch trace 54 and the second touch trace 55 disposed on the second inorganic layer 53, where the first touch trace 54 is electrically connected to the bridging trace 52 through a via hole on the second inorganic layer 53.
Alternatively, the substrate base plate 10 may be a flexible base plate, such as a polyimide base plate, or a hard base plate, such as a glass base plate; the array layer 20 includes a plurality of data lines, gate lines, and a plurality of thin film transistors for transmitting data signals and control signals to the light emitting layer 30 to control the display function of the light emitting layer 30.
According to an embodiment of the present application, as shown in fig. 4, fig. 4 is a schematic cross-sectional structure diagram of another display panel provided in the embodiment of the present application. It should be noted that the difference between the present embodiment and the foregoing embodiments only exists in the structural difference of the touch functional layer 50, and the touch functional layer 50 of the present embodiment adopts a self-capacitance structure; in this embodiment, the touch functional layer 50 includes a third touch trace 57 and a photoresist layer 56 disposed on the third touch trace 57, and the photoresist layer 56 is used to raise the height of the black matrix 61, so that the color filter units 62 are more easily gathered between the black matrices 61.
To sum up, the display panel provided by the embodiment of the application comprises the touch functional layer and the color filter layer which are arranged on the upper layer of the light emitting layer, and the photoresist layer is reserved on the upper layer of the touch wiring of the touch functional layer, so that the height of the black matrix arranged on the upper layer of the touch wiring is increased, the increase of the height of the black matrix is beneficial to promoting the color filter units in the color filter layer to be gathered between the black matrixes, and the risk of overlapping or color mixing between the adjacent color filter units is reduced or eliminated.
Another embodiment of the present application provides a method for manufacturing a display panel, as shown in fig. 5, the method for manufacturing a display panel includes the following steps:
step S1, as shown in fig. 6a, is to fabricate the array layer 20 and the light-emitting layer 30 disposed on the array layer 20 on a substrate 10.
Alternatively, the base substrate 10 may be a flexible substrate, such as a polyimide substrate, or a rigid substrate, such as a glass substrate. The array layer 20 includes a plurality of data lines, gate lines, and a plurality of thin film transistors for transmitting data signals and control signals to the light emitting layer 30 to control the display function of the light emitting layer 30. The light emitting layer 30 includes a plurality of light emitting units 31, and the light emitting units 31 may be organic light emitting diodes; the light emitting unit 31 includes a red light emitting unit 311, a green light emitting unit 312, and a blue light emitting unit 313 to realize color display.
Optionally, after the light emitting layer 30 is manufactured, the manufacturing method of the display panel further includes manufacturing a thin film encapsulation layer 40 on the light emitting layer 30, where the thin film encapsulation layer 40 is used for encapsulating and protecting the light emitting layer 30.
In step S2, as shown in fig. 6a to 6d, a metal layer and a photoresist layer 56 covering the metal layer are formed on the thin film encapsulation layer 40.
Specifically, the step S2 includes the steps of:
as shown in fig. 6a, a first inorganic layer 51 and a first metal layer 52a on the first inorganic layer 51 are formed on the thin film encapsulation layer 40; the method of forming the first inorganic layer 51 and the first metal layer 52a may be a vapor deposition method.
As shown in fig. 6b, the first metal layer 52a is patterned to form a bridging trace 52; alternatively, the method of patterning the first metal layer 52a may be exposure, development and etching processes.
As shown in fig. 6c, a second inorganic layer 53 covering the bridging trace 52 and a second metal layer 54a on the second inorganic layer 53 are fabricated, such that the second metal layer 54a is electrically connected to the bridging trace 52 through a via on the second inorganic layer 53; the method of fabricating the second inorganic layer 53 and the second metal layer 54a may be a vapor deposition method.
As shown in fig. 6d, a photoresist layer 56 is formed on the second metal layer 54 a; alternatively, the photoresist layer 56 may be made of a black-philic matrix photoresist.
In step S3, as shown in fig. 6e, the photoresist layer 56 is exposed and developed to form a patterned photoresist structure.
Step S4, as shown in fig. 6f, performing an etching operation on the metal layer to form a touch trace having the same shape as the photoresist layer 56.
Specifically, the step S4 includes: and etching the second metal layer 54a to form a first touch trace 54 and a second touch trace 55 having the same shape as the photoresist layer 56.
Optionally, while or after the etching operation is performed on the second metal layer 54a, the method for manufacturing the display panel further includes processing the outer surface of the photoresist layer 56 to form a black-philic matrix surface. The black-philic matrix surface may be a rough surface on the outer surface of the photoresist layer 56, which may create a strong adhesion of the black matrix formed on the photoresist layer 56.
Step S5, as shown in fig. 6g, a black matrix 61 covering the first touch trace 54, the second touch trace 55 and the light blocking layer 56 is manufactured.
It should be noted that the existence of the photoresist layer 56 enables the black matrix 61 to have a larger height with a smaller thickness, which facilitates the arrangement of the black matrix 61 and facilitates the aggregation of the color filter units arranged later between the black matrix 61, and reduces or eliminates the risk of overlapping or color mixing between adjacent color filter units.
Alternatively, the side 611 of the black matrix 61 is formed in a double-stepped shape. It should be noted that, because the light resistance layer 56 is raised by the height of the touch trace, when the black matrix 61 is disposed on the light resistance layer 56, the black matrix 61 naturally forms a step at a height corresponding to the top end of the light resistance layer 56, so as to form a double-layer stepped structure of the side surface 611; the double-layer stepped structure of the side surface 611 forms a funnel-shaped accommodating cavity between the adjacent black matrixes 61, which is more beneficial to the collection of the color filter units arranged later in the accommodating cavity, and prevents the overlapping and color mixing of the filter materials.
Alternatively, the inclined surface 611a of the black matrix side 611 forms an angle θ smaller than or equal to 70 degrees with the horizontal direction. Therefore, the funnel-shaped accommodating cavity formed between the adjacent black matrixes 61 has a larger opening, and the filter material is further prevented from overflowing the accommodating cavity to cause the overlapping and color mixing of the color filter layers.
In step S6, as shown in fig. 6h, the color filter unit 62 is formed between the black matrices 61.
Specifically, the method of forming the color filter unit 62 may be an inkjet printing method. It should be noted that, on the premise that the black matrixes 61 have a larger height, a deeper accommodating cavity of the color filter unit 62 is formed between adjacent black matrixes 61, and droplets of the filter material dripped by the inkjet printing apparatus more easily enter and gather in the accommodating cavity, thereby preventing the problems of overlapping and color mixing of the color filter layers due to overflow of the filter material.
Optionally, in the thickness direction of the display panel, the color filter unit 62 is overlapped with the light emitting unit 31, and the size of a single color filter unit 62 is larger than that of a single light emitting unit 31, so that the color filter unit 62 completely covers the light emitting unit 31, and the light emitted by the light emitting unit 31 is filtered. Specifically, the color filter unit 62 includes a red filter unit 621, a green filter unit 622, and a blue filter unit 623, and along the thickness direction of the display panel, the red filter unit 621 vertically corresponds to the red light emitting unit 311, the green filter unit 622 vertically corresponds to the green light emitting unit 312, and the blue filter unit 623 vertically corresponds to the blue light emitting unit 313.
Further, as shown in fig. 6i, the method for manufacturing the display panel further includes manufacturing a flat protective layer 70 covering the color filter unit 62 and the black matrix 61 after the color filter unit 62 is manufactured.
In summary, in the display panel manufacturing method provided in the embodiment of the present application, the photoresist layer is reserved on the upper layer of the touch control routing, so that the height of the black matrix disposed on the upper layer of the touch control routing is increased, and the increase of the height of the black matrix is beneficial to causing the color filter units in the color filter layer to be gathered between the black matrices, thereby reducing or eliminating the risk of overlapping or color mixing between adjacent color filter units.
It should be noted that, although the present application has been described with reference to specific examples, the above-mentioned examples are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be limited by the appended claims.
Claims (10)
1. A display panel, comprising:
a light emitting layer including a plurality of light emitting cells;
the touch control functional layer is arranged on the light emitting layer and comprises a plurality of touch control wires, and at least part of the touch control wires are provided with a light resistance layer;
the color filter layer is arranged on the touch control functional layer and comprises a black matrix and color filter units arranged between the black matrixes, and the black matrixes cover the touch control wiring and the light resistance layer.
2. The display panel according to claim 1, wherein the side surface of the black matrix is double-stepped.
3. The display panel according to claim 2, wherein an angle between the inclined surface of the side surface of the black matrix and the horizontal direction is less than or equal to 70 degrees.
4. The display panel according to claim 1, wherein the color filter unit corresponds to the light emitting unit up and down along a thickness direction of the display panel, and a vertical projection area of the color filter unit on the light emitting layer covers the light emitting unit.
5. The display panel according to claim 1, wherein the touch traces include a first touch trace disposed along a first direction and a second touch trace disposed along a second direction, the touch functional layer includes a first inorganic layer disposed on the light emitting layer, a bridging trace disposed on the first inorganic layer, a second inorganic layer disposed on the first inorganic layer and covering the bridging trace, and the first touch trace and the second touch trace disposed on the second inorganic layer, the first touch trace is electrically connected to the bridging trace through a via hole on the second inorganic layer, and the photoresist layer is disposed on a surface of the first touch trace and the second touch trace away from the light emitting layer.
6. The display panel according to claim 1, wherein the touch traces include a third touch trace, the third touch trace is disposed on the light-emitting layer, and the photoresist layer is disposed on a surface of the third touch trace on a side away from the light-emitting layer.
7. The display panel according to claim 1, wherein the display panel further comprises a substrate, an array layer disposed between the substrate and the light-emitting layer, a thin film encapsulation layer disposed between the light-emitting layer and the touch functional layer, and a flat protective layer disposed on the color filter layer.
8. A manufacturing method of a display panel is characterized by comprising the following steps:
manufacturing an array layer and a light-emitting layer arranged on the array layer on a substrate;
manufacturing a metal layer and a light resistance layer covering the metal layer on the light emitting layer;
carrying out exposure and development operation on the photoresist layer;
etching the metal layer to form a touch wire with the same shape as the photoresist layer;
manufacturing a black matrix covering the touch wiring and the light resistance layer;
and forming color filter units between the black matrixes.
9. The method for manufacturing a display panel according to claim 8, wherein the touch traces include a first touch trace and a second touch trace, and the method for manufacturing the touch traces and the photoresist layer includes the following steps:
manufacturing a first inorganic layer and a first metal layer on the first inorganic layer on the light-emitting layer;
patterning the first metal layer to form a bridging line;
manufacturing a second inorganic layer covering the bridging trace and a second metal layer positioned on the second inorganic layer, so that the second metal layer is electrically connected with the bridging trace through a via hole on the second inorganic layer;
Manufacturing a light resistance layer on the second metal layer;
carrying out exposure and development operation on the photoresist layer;
and etching the second metal layer to form a first touch wire extending along the first direction and a second touch wire extending along the second direction.
10. The method as claimed in claim 8, further comprising treating an outer surface of the photoresist layer to form a black-philic matrix surface while or after the etching of the metal layer.
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| CN202010705317.0A CN111863899B (en) | 2020-07-21 | 2020-07-21 | Display panel and manufacturing method thereof |
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| CN103336617A (en) * | 2013-07-05 | 2013-10-02 | 南昌欧菲光显示技术有限公司 | Optical filter with touch effect, preparation method of optical filter and touch display assembly |
| CN203338288U (en) * | 2013-07-05 | 2013-12-11 | 南昌欧菲光显示技术有限公司 | Touch display screen and optical filter assembly thereof |
| KR102551140B1 (en) * | 2017-09-20 | 2023-07-04 | 삼성디스플레이 주식회사 | Display device |
| KR102589750B1 (en) * | 2018-08-22 | 2023-10-18 | 삼성디스플레이 주식회사 | Display device and method of manufacturing display device |
| CN109343735B (en) * | 2018-09-18 | 2022-08-09 | 京东方科技集团股份有限公司 | Touch display substrate, preparation method thereof and touch display device |
| CN110707130A (en) * | 2019-09-04 | 2020-01-17 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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2020
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