CN110989862A - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN110989862A CN110989862A CN201911184218.6A CN201911184218A CN110989862A CN 110989862 A CN110989862 A CN 110989862A CN 201911184218 A CN201911184218 A CN 201911184218A CN 110989862 A CN110989862 A CN 110989862A
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- 230000001133 acceleration Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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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
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention relates to the technical field of display panels, in particular to a display panel and a manufacturing method thereof, wherein the display panel comprises a substrate, a light-emitting display layer, a touch layer and a color resistance layer, wherein the light-emitting display layer is arranged on the substrate and comprises a plurality of first light-emitting units; the color resistance layer comprises a first sub color resistance layer; the touch layer comprises a first metal layer and a second metal layer, a first sub-color resistance layer covers the first light-emitting unit and the first metal layer from one side far away from the substrate, and at least part of the first sub-color resistance layer covering the first metal layer is used as an isolation cushion layer between the second metal layer and the first metal layer. The display panel has fewer manufacturing steps, improves the productivity, reduces the reflection of ambient light, and improves the contrast of the display panel.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a display panel and a manufacturing method thereof.
Background
With the development of the information age and the acceleration of the pace of life, the touch technology has been widely applied to various electronic products due to its humanized design and simple and fast input, wherein the capacitive touch screen is widely used due to its advantages of fast response speed, high sensitivity, good reliability and high durability.
An Organic Light Emitting Diode (OLED) display device has characteristics of self-luminescence, wide viewing angle, high Light Emitting efficiency, low power consumption, fast response time, good low temperature characteristics, and the like. Currently, a touch OLED display device usually employs an externally-embedded touch screen to attach to an OLED display panel.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a method for manufacturing the same, which can reduce the number of manufacturing steps.
In order to solve the technical problems, the invention adopts a technical scheme that: the display panel comprises a substrate, a light-emitting display layer, a touch layer and a color resistance layer, wherein the light-emitting display layer is arranged on the substrate and comprises a plurality of first light-emitting units; the color resistance layer comprises a first sub color resistance layer; the touch layer comprises a first metal layer and a second metal layer, the first sub-color resistance layer covers the first light-emitting unit and the first metal layer from one side far away from the substrate, and at least part of the first sub-color resistance layer covers the first metal layer and is used as an isolation cushion layer between the second metal layer and the first metal layer.
On one hand, the first sub-color resistance layer covers the first light-emitting unit, so that the reflection of external environment light of the display panel can be reduced; on the other hand, the first sub-color resistance layer is used as an isolation cushion layer of the touch layer, so that the touch layer can be prevented from being short-circuited; on the other hand, the first color resistance layer is adopted to cover the first light-emitting unit and the first metal layer at the same time, so that the first sub-color resistance layer covering the first light-emitting unit and the insulating layer for avoiding short circuit of the first metal layer and the second metal layer do not need to be manufactured step by step in the manufacturing process of the display panel, and manufacturing steps can be reduced.
The display panel further comprises a black matrix layer, and the black matrix layer covers the touch layer from one side far away from the substrate, so that the projection of the black matrix layer on the substrate covers the projections of the first metal layer and the second metal layer on the substrate. The touch layer is covered with a black matrix layer, and the black matrix layer can absorb external ambient light irradiated into the display panel and reduce reflection of the metal layer to the ambient light. The color resistance layer and the black matrix layer are combined with the luminous display layer, so that a display panel does not need a polaroid, and the display panel is thin, easy to bend and easy to realize flexible display.
Further, the light-emitting display layer comprises a plurality of second light-emitting units and third light-emitting units, the color resistance layer comprises a second sub-color resistance layer and a third sub-color resistance layer, and the second sub-color resistance layer covers the second light-emitting units from the side far away from the substrate; the third sub-color-resist layer covers the third light-emitting unit from the side far away from the substrate. The light-emitting units on the light-emitting display layer can be classified and completely covered, so that the reflection of external environment light is reduced to a greater extent by the display panel.
The first light-emitting unit, the second light-emitting unit and the third light-emitting unit are used for generating three primary colors of light with different colors, and the colors of the light allowed to penetrate through the first sub-color resistance layer, the second sub-color resistance layer and the third sub-color resistance layer are respectively the same as the light-emitting colors of the first light-emitting unit, the second light-emitting unit and the third light-emitting unit. The transmittance of light emitted by the three light-emitting units is not influenced or weakened, the light loss is reduced, the display brightness of the display panel is improved, and meanwhile, the color resistance layer can reduce the reflection of external environment light.
The display panel is provided with a display area, the first light-emitting unit, the second light-emitting unit and the third light-emitting unit are arranged in the display area, the first metal layer and the second metal layer are located in gaps among the first light-emitting unit, the second light-emitting unit and the third light-emitting unit, the first sub-color resistance layer fully covers the first metal layer in the display area, and the black matrix layer fully covers the second metal layer in the display area. The touch layer does not affect the light transmittance of the display light-emitting unit.
One of the first metal layer and the second metal layer comprises a first touch electrode and a second touch electrode which are respectively arranged along a first direction and a second direction which are mutually crossed, the first touch electrode further comprises a plurality of electrode segments which are arranged at intervals along the first direction, and the second touch electrode is continuously arranged along the second direction from the interval area of the electrode segments;
the other one of the first metal layer and the second metal layer comprises a plurality of bridge-spanning electrodes arranged at the crossing positions of the first touch electrode and the second touch electrode, wherein the isolation cushion layer is provided with an opening, so that two adjacent electrode segments are electrically connected to the same bridge-spanning electrode through the opening respectively, and the two adjacent electrode segments are further electrically connected. The display panel of the invention can be applied to the condition that the first touch electrode and the second touch electrode are the same layer.
The first metal layer comprises first touch electrodes continuously arranged along a first direction, the second metal layer comprises second touch electrodes continuously arranged along a second direction crossed with the first direction, and the isolation cushion layer is used for electrically isolating the first touch electrodes from the second touch electrodes at the crossed positions of the first touch electrodes and the second touch electrodes. The display panel of the invention can be suitable for the condition that the first touch electrode and the second touch electrode are two layers.
The black matrix layer covers the second metal layer from one side far away from the substrate, or covers the second metal layer and the first metal layer which is not covered by the second metal layer. When the first metal layer is completely covered by the second metal layer, the black matrix layer covers the second metal layer, so that the black matrix layer can completely cover the touch layer, and the reflection of the metal layer to external light is reduced to the maximum extent. When the first metal layer is not completely covered by the second metal layer, the black matrix layer covers the second metal layer and the first metal layer which is not covered by the second metal layer, so that the covering of all the metal layers can be realized, and the reflection of the metal layers to the external environment light is reduced to the maximum extent.
The invention also comprises a second technical scheme, namely a manufacturing method of the display panel, wherein a first sub-color resistance layer is manufactured on a substrate containing a first metal layer and a light-emitting display layer, so that at least part of the first metal layer and a first light-emitting unit of the light-emitting display layer are covered by the first sub-color resistance layer;
and manufacturing a second metal layer on one side of the first sub color resistance layer, which is far away from the first metal layer, so that the second metal layer is isolated from the first metal layer through the first sub color resistance layer. The manufacturing method of the display panel can reduce the manufacturing steps and improve the productivity.
And further, manufacturing a black matrix layer on one side of the second metal layer, which is far away from the substrate, to cover the touch layer, so that the projection of the black matrix layer on the substrate covers the projections of the first metal layer and the second metal layer on the substrate. The reflection of the metal layer of the touch layer to the external environment light can be further greatly reduced.
The manufacturing method of the display panel further comprises the step of manufacturing a second light-emitting unit of which the second sub-color resistance layer covers the light-emitting display layer on the light-emitting display layer. The second light emitting unit of the light emitting display layer can be covered, and reflection of the second light emitting unit to external environment light is reduced.
The manufacturing method of the display panel further comprises the step of manufacturing a third light-emitting unit of which the third sub-color resistance layer covers the light-emitting display layer on the light-emitting display layer. The third light emitting unit of the light emitting display layer can be further covered, and the reflection of the third light emitting unit to the external environment light is reduced.
It should be noted that the manufacturing of the second sub color resist layer and the manufacturing of the third sub color resist layer may occur at any link of the manufacturing process of the display panel.
Wherein, keeping away from base plate one side at the second metal level and making black matrix layer cover touch-control layer and include: and manufacturing a black matrix layer on one side of the second metal layer, which is far away from the substrate, wherein the black matrix layer covers the second metal layer, or the second metal layer and the first metal layer which is not covered by the second metal layer. When the first metal layer is completely covered by the second metal layer, the black matrix layer covers the second metal layer, and the black matrix layer can completely cover the touch layer; when the first metal layer is not covered by the second metal layer, the black matrix layer also covers the first metal layer which is not covered by the second metal layer, so that the reflection of the display panel to the external environment light is reduced to the maximum extent.
The invention has the beneficial effects that: different from the prior art, in the display panel of the embodiment of the invention, on one hand, the first sub-color resistance layer covers the first light-emitting unit, so that the display panel can reduce the reflection of external environment light; on the other hand, the first sub-color resistance layer is used as an isolation cushion layer of the touch layer, so that the touch layer can be prevented from being short-circuited; on the other hand, the first color resistance layer is adopted to cover the first light-emitting unit and the first metal layer simultaneously, so that the display panel does not need to manufacture a first sub color resistance layer covering the first light-emitting unit and an insulating layer avoiding short circuit of the first metal layer and the second metal layer step by step in the manufacturing process, the manufacturing steps can be reduced, the productivity is improved, meanwhile, the first sub color resistance layer is adopted to cover at least part of the first light-emitting unit and the first metal layer, the reflection of the display panel to the external environment light can be reduced, and the contrast of the display panel is improved.
Drawings
FIG. 1 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the display panel along the C-C line in the area A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the display panel along the line E-E in the area A of FIG. 1;
FIG. 4 is a schematic cross-sectional view of the display panel along the C-C line in the area A of FIG. 1;
FIG. 5 is a schematic cross-sectional view of the display panel along the line E-E in the area A of FIG. 1;
FIG. 6 is a schematic cross-sectional view of the display panel along the line E-E in the area A of FIG. 1;
FIG. 7 is a schematic cross-sectional view of the display panel along the C-C line in the area A of FIG. 1;
FIG. 8 is a schematic cross-sectional view of the display panel along the line E-E in the area A of FIG. 1;
FIG. 9 is a schematic cross-sectional view of the display panel along the line E-E in the area A of FIG. 1;
FIG. 10 is a schematic cross-sectional view of the display panel along the C-C line in the area A of FIG. 1;
FIG. 11 is a cross-sectional view of an embodiment of a display panel in the prior art.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 and 2, an embodiment of the invention provides a display panel, including a substrate 1, a light emitting display layer 2, a touch layer 4, a color resistance layer 3, and a black matrix layer 5, wherein the light emitting display layer 2 is disposed on the substrate 1, and the light emitting display layer 2 includes a plurality of first light emitting units 21; the color resist layer 3 includes a first sub-color resist layer 31; the touch layer 4 includes a first metal layer 41 and a second metal layer 42, the first sub color resist layer 31 covers the first light emitting unit 21 and the first metal layer 41 from a side away from the substrate 1, and at least a portion of the first metal layer 41 covered by the first sub color resist layer 31 is used as a spacer 311 between the second metal layer 42 and the first metal layer 41.
In the embodiment of the present invention, the first sub color-resist layer 31 is adopted to cover the first light-emitting unit 21 and the first metal layer 41, on one hand, a part 312 of the first sub color-resist layer 31 covers the first light-emitting unit 21, so that the display panel can reduce the reflection of the external environment light; on the other hand, the first sub-color-resist layer 31 is used as the isolation pad layer 311 of the touch layer 4, so that short circuit of the touch layer 4 can be avoided; on the other hand, the first sub-color-resist layer 31 is adopted to cover the first light-emitting unit 21 and the first metal layer 41 at the same time, so that the display panel does not need to manufacture the first sub-color-resist layer 31 covering the first light-emitting unit 21 and the insulating layer for avoiding short circuit of the first metal layer 41 and the second metal layer 42 step by step in the manufacturing process, the manufacturing steps can be reduced, meanwhile, the first sub-color-resist layer 31 is adopted to cover at least part of the first light-emitting unit 21 and the first metal layer 41, reflection of the display panel to external environment light can be reduced, and the contrast of the OLED display panel is improved.
In the embodiment of the present invention, the light emitting display layer 2 includes a plurality of light emitting units arranged in an array. In one embodiment, the light emitting display layer 2 specifically includes a light emitting unit and an encapsulation layer covering the light emitting unit. The light emitting unit comprises an anode layer, an organic light emitting layer, a cathode layer and the like; the encapsulation layer includes an inorganic thin film encapsulation layer and an organic thin film encapsulation layer which are stacked, and the specific structure and material of the light-emitting display layer 2 are not limited in the invention and can be set according to the display mode of the display panel.
The middle substrate 1 of the embodiment of the present invention may include a substrate and a pixel circuit array disposed on the substrate.
As a preferred aspect of the present invention, the display panel further includes a black matrix layer 5, wherein the black matrix layer 5 covers the touch layer 4 from a side away from the substrate 1, so that a projection of the black matrix layer 5 on the substrate 1 covers a projection of the first metal layer 41 and the second metal layer 42 on the substrate 1. According to the embodiment of the invention, the black matrix layer 5 is covered on the touch layer 4, and the black matrix layer 5 can absorb external ambient light irradiated into the display panel, so that the reflection of the first metal layer 41 and the second metal layer 42 to the ambient light is reduced.
Further, the light emitting display layer 2 includes a plurality of second light emitting units 22 and third light emitting units 23, the color resistance layer 3 includes a second sub-color resistance layer 32 and a third sub-color resistance layer (not shown), and the second sub-color resistance layer 32 covers the second light emitting units 22 from a side away from the substrate 1; the third sub-color resist covers the third light emitting unit 23 from the side away from the substrate 1. In the embodiment of the present invention, the first sub color resistance layer 31, the second sub color resistance layer 32, and the third sub color resistance layer are respectively used to cover the first light emitting unit 21, the second light emitting unit 22, and the third light emitting unit 23 of the light emitting display layer 2, so that the light emitting units of the light emitting display layer 2 can be completely covered in a classified manner, and the reflection of the external environment light can be reduced to a greater extent by the display panel. According to the embodiment of the invention, the color resistance layer 3 and the black matrix layer 5 are combined to shield the light-emitting display layer 2 and the touch layer 4, so that a display panel does not need a polaroid, and the display panel is thin, easy to bend and easy to realize flexible display.
The first light emitting unit 21, the second light emitting unit 22 and the third light emitting unit 23 are configured to generate three primary colors of different colors, and the first sub-color resist layer 31, the second sub-color resist layer 32 and the third sub-color resist layer allow the transmitted light to have the same color as the light emitting colors of the first light emitting unit 21, the second light emitting unit 22 and the third light emitting unit 23, respectively. When the color resistance layer 3 covers the three light-emitting units of the light-emitting display layer 2, the transmittance of light emitted by the three light-emitting units is not affected or weakened, the light loss is reduced, the display brightness of the OLED display panel is improved, and meanwhile, the reflection of external environment light can be reduced by the color resistance layer 3. Wherein the first light emitting unit 21 emits green light, the second light emitting unit 22 emits blue light, and the third light emitting unit 23 emits red light as a preferred embodiment of the present invention. The first sub-color resist layer 31 allows the color of transmitted light to be green; the second sub-color resist layer 31 allows the color of the transmitted light to be blue; the second sub-color resist layer 31 allows the color of transmitted light to be red. As a modification, the first light emitting unit 21 may emit blue or red light, and the second and third light emitting units 22 and 23 may emit any one of blue or green light, respectively; the first, second, and third sub color resist layers 31, 32, and 23 allow the color of the transmitted light to be adjusted corresponding to the first, second, and third light emitting units 21, 22, and 23.
As shown in fig. 1 and 2, the display panel is provided with a display area, the first light emitting unit 21, the second light emitting unit 22 and the third light emitting unit 23 are arranged in the display area, and the first metal layer 41 and the second metal layer 42 are located in a gap between the first light emitting unit 21, the second light emitting unit 22 and the third light emitting unit 23. The touch layer 4 is disposed in the display area, and the first metal layer 41 and the second metal layer 42 do not cover the first light emitting unit 21, the second light emitting unit 22, and the third light emitting unit 23, and the first metal layer 41 and the second metal layer 42 do not affect the light transmittance of the display light emitting unit.
In an embodiment of the present invention, the second metal layer 42 includes a first touch electrode 43 and a second touch electrode 44 respectively disposed along a first direction D1 and a second direction D2 which intersect each other, the first touch electrode 43 further includes a plurality of electrode segments 431 disposed at intervals along the first direction D1, and the second touch electrode 44 is continuously disposed along the second direction D2 from the interval regions of the electrode segments 431; in this embodiment, the first direction D1 and the second direction D2 are perpendicular to each other, and in other embodiments, the included angle between the first direction D1 and the second direction D2 may be other angles, and the invention is not limited in particular.
As shown in fig. 2 and 3, the first metal layer 41 includes a plurality of bridge electrodes 45 disposed at the crossing positions of the first touch electrode 43 and the second touch electrode 44, wherein an opening is disposed on the isolation pad layer 311, so that two adjacent electrode segments 431 are electrically connected to the same bridge electrode 45 through the opening, respectively, thereby achieving the electrical connection between the two adjacent electrode segments 431.
In this embodiment, the first metal layer 41 is disposed on the side of the light emitting display layer 2 away from the substrate 1, the first sub color barrier layer 31 covers the first light emitting unit 21 and the first metal layer 41 completely, the black matrix layer 5 covers the second metal layer 42 and the gap between the adjacent electrode segment 431 and the second touch electrode 44 from the side away from the substrate 1, that is, the coverage of the black matrix layer 5 on the touch layer 4 can be achieved, and the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the projection of the second metal layer 42 on the substrate 1.
In another embodiment of the present invention, as shown in fig. 1, 4 and 5, the first metal layer 41 includes a first touch electrode 43 and a second touch electrode 44 respectively disposed along a first direction D1 and a second direction D2 which intersect each other, the first touch electrode 43 further includes a plurality of electrode segments 431 disposed at intervals along the first direction, and the second touch electrode 44 is continuously disposed along the second direction D2 from the interval regions of the electrode segments 431; in this embodiment, the first direction D1 and the second direction D2 are perpendicular to each other, and in other embodiments, the included angle between the first direction D1 and the second direction D2 may be other angles, and the invention is not limited in particular.
The second metal layer 42 includes a plurality of bridge electrodes 45 disposed at the intersection positions of the first touch electrode 43 and the second touch electrode 44, wherein openings are disposed on the isolation pad layer 311, so that two adjacent electrode segments 431 are electrically connected to the same bridge electrode 45 through the openings, respectively, thereby achieving the electrical connection between the two adjacent electrode segments 431.
In this embodiment, the first metal layer 41 is disposed on the side of the light emitting display layer 2 away from the substrate 1, the first sub color resistance layer 31 covers the first light emitting unit 21 completely (see fig. 4), and covers the first metal layer 41 partially (see fig. 5), that is, the first sub color resistance layer 31 is disposed at the intersection of the first touch electrode 43 and the second touch electrode 44 to cover the portion of the electrode segment 431, the gap between the two adjacent electrode segments 431 and the bridge electrode 45, and the first light emitting unit 21, and the area of the first sub color resistance layer 31 covering the first metal layer 41 may enable an opening to be formed on the first sub color resistance layer 31, so that the two adjacent electrode segments 431 can be electrically connected to the same bridge electrode 45 through the opening. Preferably, the black matrix layer 5 covers the second metal layer 42 and the first metal layer 41 which is not covered by the second metal layer 42 from the side far from the substrate 1, so that the black matrix layer 5 covers the touch layer 4 from the side far from the substrate 1, and the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the second metal layer 42 on the substrate 1, and the reflection of the metal layers to the external environment light is reduced to the maximum extent.
As a variation, the first sub-color-resistance layer 31 may also fully cover the first light-emitting unit 21 (see fig. 4) and the first metal layer 41 (see fig. 6), wherein, as shown in fig. 6, the first sub-color-resistance layer 31 located between the crossing position of the first touch electrode 43 and the second touch electrode 44 and the bridge electrode 45 is an isolation pad layer 311; the black matrix layer 5 covers the second metal layer 42 and the first sub-color resist layer 31 which is not covered by the second metal layer 42 and is in contact with the first metal layer 41 from the side far away from the substrate 1, so that the black matrix layer 5 covers the touch layer 4 from the side far away from the substrate 1, and the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the second metal layer 42 on the substrate 1. The reflection of the metal layer to the external environment light is reduced by the black matrix layer 5, and the combination of the black matrix layer 5 and the first sub-color resist layer 31.
In still another embodiment of the present invention, as shown in fig. 1, 7 and 8, the first metal layer 41 includes a first touch electrode 43 continuously disposed along a first direction D1, the second metal layer 42 includes a second touch electrode 44 continuously disposed along a second direction D2 intersecting the first direction D1, and the isolation pad layer 311 electrically isolates the first touch electrode 43 from the second touch electrode 44 at an intersection of the first touch electrode 43 and the second touch electrode 44. In this embodiment, the first touch electrode 43 and the second touch electrode 44 are two layers, and the isolation pad layer 311 can prevent the first touch electrode 43 and the second touch electrode 44 from being short-circuited at the intersection position. In this embodiment, the first direction D1 is perpendicular to the second direction D2, and in other embodiments, the first direction D1 and the second direction D2 may have other included angles.
The first sub-color-resist layer 31 covers the first light-emitting unit 21 completely, and the first sub-color-resist layer 31 covers the first metal layer 41 partially (see fig. 8), that is, the first sub-color-resist layer 31 is disposed at the intersection of the first touch electrode 43 and the second touch electrode 44, between the first touch electrode 43 and the second touch electrode 44, and on the first light-emitting unit 21. Preferably, the black matrix layer 5 covers the second metal layer 42 and the first metal layer 41 which is not covered by the second metal layer 42 from the side far from the substrate 1, so that the black matrix layer 5 covers the touch layer 4 from the side far from the substrate 1, and the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the second metal layer 42 on the substrate 1, and the reflection of the metal layers to the external environment light is reduced to the maximum extent.
As shown in fig. 9, as a modification, the first sub-color-resist layer 31 may also cover the first light-emitting unit 21 and the first metal layer 41, wherein the first sub-color-resist layer 31 at the intersection of the first touch electrode 43 and the second touch electrode 44 is an isolation pad layer 311; the black matrix layer 5 covers the second metal layer 42 and the first sub-color resist layer 31 which is not covered by the second metal layer 42 and is in contact with the first metal layer 41 from the side far away from the substrate 1, so that the black matrix layer 5 covers the touch layer 4 from the side far away from the substrate 1, and the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the second metal layer 42 on the substrate 1. The black matrix layer 5 is combined with the first sub-color resist layer 31 through the black matrix layer 5 and the black matrix layer 5, and the reflection of the metal layer to the external environment light is reduced.
The display panel of the embodiment of the invention further comprises a planarization layer 6, wherein the planarization layer 6 is arranged on the black matrix layer 5, the color resistance layer 3 and the touch layer 4. The display panel of the embodiment of the invention can protect the touch layer 4 by further arranging the planarization layer 6.
As shown in fig. 10, the display panel of the embodiment of the invention further includes a buffer layer 7, and the buffer layer 7 is disposed between the light emitting display layer 2 and the touch layer 4.
The invention also comprises a second technical scheme, and a manufacturing method of the display panel comprises the following steps:
s100: on the substrate 1 including the first metal layer 41 and the light emitting display layer 2, the first sub color resist layer 31 is fabricated such that the first sub color resist layer 31 covers at least a portion of the first metal layer 41 and the first light emitting cells 21 of the light emitting display layer 2.
The first metal layer 41 may be formed by magnetron sputtering metal onto the light emitting display layer 2, coating a negative photoresist on the metal layer, exposing with a mask to form a patterned curing adhesive, and dry etching to form the first metal layer 41. The first metal layer 41 according to the embodiment of the present invention is not limited to the above-described manufacturing method.
On the light emitting display layer 2 and the first metal layer 41, a layer of first sub color resist material is coated, wherein the first sub color resist material may be a composite of a pigment and a resin, and is exposed by using a mask to form a patterned first sub color resist layer 31, such that the first sub color resist layer 31 covers at least a portion of the first metal layer 41 and the first light emitting unit 21 of the light emitting display layer 2.
S200: the second metal layer 42 is formed on the side of the first sub-color-resistance layer 31 away from the first metal layer 41, so that the first sub-color-resistance layer 31 is used as an isolation pad layer 311 between the second metal layer 42 and the first metal layer 41.
Specifically, the second metal layer 42 may also be formed by magnetron sputtering a metal to form a metal layer, coating a negative photoresist on the metal layer, exposing the metal layer with a mask to form a patterned curing adhesive, and dry-etching to form the second metal layer 42.
Preferably, the first metal layer 41 includes first touch electrodes 43 continuously arranged along a first direction D1, the second metal layer 42 includes second touch electrodes 44 continuously arranged along a second direction D2 intersecting the first direction D1, and the isolation pad layer 311 electrically isolates the first touch electrodes 43 from the second touch electrodes 44 at intersections of the first touch electrodes 43 and the second touch electrodes 44.
As another preferred scheme, when either one of the second metal layer 42 or the first metal layer 41 includes the first touch electrode 43 and the second touch electrode 44 respectively disposed along the first direction D1 and the second direction D2 which intersect each other, the first touch electrode 43 further includes a plurality of electrode segments 431 disposed at intervals along the first direction, and the second touch electrode 44 is continuously disposed along the second direction D2 from the interval regions of the electrode segments 431; when the other of the first metal layer 41 and the second metal layer 42 includes a plurality of bridge electrodes 45 disposed at the intersection positions of the first touch electrode 43 and the second touch electrode 44, before the second metal layer 42 is fabricated, a hole is formed on the isolation pad layer 311 of the first sub-color resist layer 31, and the second metal layer 42 is formed by magnetron sputtering, exposure and dry etching, so that the two electrode segments 431 disposed adjacent to each other are electrically connected to the same bridge electrode 45 through the hole, thereby achieving the electrical connection between the two electrode segments 431 disposed adjacent to each other.
The manufacturing method of the display panel can reduce a mask manufacturing step and improve the productivity.
Preferably, the method for manufacturing a display panel further includes: s300: a black matrix layer 5 is formed on the side of the touch layer 4 away from the substrate 1 to cover the touch layer 4, so that the projection of the black matrix layer 5 on the substrate 1 covers the projection of the first metal layer 41 and the second metal layer 42 on the substrate 1.
Specifically, the patterned black matrix layer 5 is formed by coating a layer of black matrix layer 5 material, wherein the black matrix layer 5 material may be a composite of black pigment and resin, and exposing the black matrix layer with a mask so that the black matrix layer 5 covers the touch layer 4.
Further, the manufacturing method of the display panel further comprises the following steps:
step 400: a second sub-color resist layer 32 is formed on the light-emitting display layer 2 to cover the second light-emitting unit 22 of the light-emitting display layer 2. Specifically, a patterned second sub color resist layer 32 is formed by coating a layer of the second sub color resist material and performing exposure using a mask, so that the second sub color resist layer 32 covers the second light emitting unit 22 of the light emitting display layer 2.
Step 500: a third sub-color resist layer is fabricated on the light-emitting display layer 2 to cover the third light-emitting unit 23 of the light-emitting display layer 2. Specifically, a patterned third sub color resist layer is formed by coating a layer of the third sub color resist material and performing exposure using a mask, so that the third sub color resist layer covers the third light emitting unit 23 of the light emitting display layer 2.
Further, the method also comprises the step 600: a planarization layer 6 is formed, wherein the planarization layer 6 is a transparent organic high molecular material and can be formed by coating.
It should be noted that steps 400 and 500 may occur at any point prior to step 600 of the display panel manufacturing process described above. For example: the steps of the manufacturing method of the display panel comprise the steps of S100, S400, S200, S300, S500 and S600 in sequence; or S500, S100, S200, S300, S400 and S600; the above combinations are merely illustrative and not exhaustive.
As a preferable aspect of the embodiment of the present invention, in step S300, when the first metal layer 41 is not completely covered by the second metal layer 42, and the black matrix layer 5 is manufactured, the black matrix layer 5 covers the second metal layer 42 and the first metal layer 41 which is not covered by the second metal layer 42. When the first metal layer 41 is completely covered by the second metal layer 42, the black matrix layer 5 may cover the second metal layer 42.
In step S100, the first sub-color-resist layer 31 is fabricated such that the first sub-color-resist layer 31 covers at least a portion of the first metal layer 41 and the first light-emitting unit 21 of the light-emitting display layer 2, wherein the first sub-color-resist layer 31 may cover the entire first metal layer 41 or a portion of the first metal layer 41, as long as it can be used as the isolation pad 311 between the first metal layer 41 and the second metal layer 42.
In the method for manufacturing a display panel according to the embodiment of the present invention, in step 100, when the first metal layer 41 is manufactured, and when the first sub-color resist layer 31 is manufactured, a mask is required to be used for etching, and in steps 200 to 600, a mask is required to be used for etching in each step. The manufacturing method of the display panel of the embodiment of the invention needs seven masks to manufacture.
In the prior art, when the color resist layer 3 and the black matrix layer 5 are combined with the substrate 1 including the light-emitting display layer 2 in a conventional simple manner, as shown in fig. 11, the method generally includes the following steps:
s10: manufacturing a first metal layer 41 on the light-emitting display layer 2 on the substrate 1;
s20: forming a one-side insulating layer 46 on the first metal layer 41;
s30: manufacturing a second metal layer 42 on one side of the insulating layer 46 far away from the substrate 1, wherein the second metal layer 42 covers the light-emitting display layer 2 and at least part of the insulating layer 46 to form a touch layer 4;
s40: forming a first planarization layer 61 on the touch layer 4;
s50: manufacturing a black matrix layer 5 on the first planarization layer 61 corresponding to the first metal layer 41 and the second metal layer 42 of the touch layer 4;
s60: respectively manufacturing a first sub color resistance layer 31, a second sub color resistance layer 32 and a third sub color resistance layer 33 to respectively cover the first light emitting unit, the second light emitting unit and the third light emitting unit of the light emitting display layer 2;
s70: the second planarization layer 62 is made to cover the first sub color resist layer 31, the second sub color resist layer 32 and the third sub color resist layer 33.
In step S60, three masks are required to be manufactured, and in the remaining steps, one mask is required in each step, so that nine mask process steps are required when the color resist layer 3 and the black matrix layer 5 are conventionally simply combined with the light-emitting display layer 2 to reach the display panel to reduce the reflection of the external ambient light. The display panel of the embodiment of the invention only needs seven masks, so that two mask process steps can be relatively reduced, the manufacturing steps are simplified, and the productivity is improved. Compared with the conventional simple combination scheme of the color resistance layer 3, the black matrix layer 5 and the luminous display layer 2, the display panel manufactured by the embodiment of the invention can reduce at least one flattening layer, so that the thickness of the display panel can be reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A display panel, comprising: a substrate (1), a light-emitting display layer (2), a touch layer (4) and a color resistance layer (3),
wherein the luminescent display layer (2) is arranged on the substrate (1), the luminescent display layer (2) comprising a plurality of first luminescent units (21);
the color resistance layer (3) comprises a first sub color resistance layer (31);
the touch layer (4) comprises a first metal layer (41) and a second metal layer (42), the first sub-color resistance layer (31) covers the first light-emitting unit (21) and the first metal layer (41) from the side far away from the substrate (1), and at least part of the first sub-color resistance layer (31) covering the first metal layer (41) is used as an isolation cushion layer (311) between the second metal layer (42) and the first metal layer (41).
2. The display panel according to claim 1, characterized in that the display panel comprises a black matrix layer (5), the black matrix layer (5) covering the touch layer (4) from a side remote from the substrate (1) such that a projection of the black matrix layer (5) on the substrate (1) covers a projection of the first metal layer (41) and the second metal layer (42) on the substrate (1).
3. A display panel according to claim 1 or 2, characterized in that the light-emitting display layer (2) comprises a plurality of second light-emitting cells (22) and third light-emitting cells (23), the color-resist layer (3) comprises a second sub-color-resist layer (32) and a third sub-color-resist layer, the second sub-color-resist layer (32) covers the second light-emitting cells (22) from the side remote from the substrate (1); the third sub-color-resist layer covers the third light-emitting unit (23) from a side away from the substrate (1).
4. A display panel according to claim 3, wherein the first light emitting unit (21), the second light emitting unit (22) and the third light emitting unit (23) are configured to generate three primary colors of different colors, and the first sub color resist layer (31), the second sub color resist layer (32) and the third sub color resist layer allow light to be transmitted in the same color as the light emitting colors of the first light emitting unit (21), the second light emitting unit (22) and the third light emitting unit (23), respectively.
5. The display panel according to claim 1, wherein one of the first metal layer (41) and the second metal layer (42) comprises a first touch electrode (43) and a second touch electrode (44) respectively arranged along a first direction (D1) and a second direction (D2) which intersect with each other, the first touch electrode (43) comprises a plurality of electrode segments (431) arranged at intervals along the first direction (D1), and the second touch electrode (44) is continuously arranged along the second direction (D2) from the interval region of the electrode segments (431);
the other one of the first metal layer (41) and the second metal layer (42) comprises a plurality of bridge electrodes (45) arranged at the crossing positions of the first touch electrode (43) and the second touch electrode (44), wherein an opening is arranged on the isolation pad layer (311), so that two adjacent electrode segments (431) are electrically connected to the same bridge electrode (45) through the openings respectively, and the two adjacent electrode segments (431) are electrically connected.
6. The display panel according to claim 1, wherein the first metal layer (41) comprises first touch electrodes (43) continuously arranged along a first direction (D1), the second metal layer (42) comprises second touch electrodes (44) continuously arranged along a second direction (D2) intersecting the first direction (D1), and the isolation pad layer (311) electrically isolates the first touch electrodes (43) and the second touch electrodes (44) at the intersection of the first touch electrodes (43) and the second touch electrodes (44).
7. A display panel as claimed in claim 2, characterized in that the black matrix layer (5) covers the second metal layer (42) from the side remote from the substrate (1) or covers the second metal layer (42) and the first metal layer (41) not covered by the second metal layer (42).
8. A manufacturing method of a display panel is characterized in that a first sub-color resistance layer (31) is manufactured on a substrate (1) containing a first metal layer (41) and a light-emitting display layer (2), so that the first sub-color resistance layer (31) covers at least part of the first metal layer (41) and a first light-emitting unit (21) of the light-emitting display layer (2);
and manufacturing a second metal layer (42) on the side of the first sub color resistance layer (31) far away from the first metal layer (41), so that the second metal layer (42) is isolated from the first metal layer (41) through the first sub color resistance layer (31).
9. The manufacturing method according to claim 8, further comprising manufacturing a black matrix layer (5) on a side of the touch layer (4) away from the substrate (1) to cover the touch layer (4), so that a projection of the black matrix layer (5) on the substrate (1) covers a projection of the first metal layer (41) and the second metal layer (42) on the substrate (1).
10. A method according to claim 8 or 9, further comprising forming a second sub-color-resist layer (32) on a side of the light-emitting display layer (2) away from the substrate (1), wherein the second sub-color-resist layer (32) covers the second light-emitting unit (22) of the light-emitting display layer (2); and manufacturing a third sub-color resistance layer on one side of the light-emitting display layer (2) far away from the substrate (1), wherein the third sub-color resistance layer covers a third light-emitting unit (23) of the light-emitting display layer (2).
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