CN113451376A - Display panel - Google Patents
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- CN113451376A CN113451376A CN202110675104.2A CN202110675104A CN113451376A CN 113451376 A CN113451376 A CN 113451376A CN 202110675104 A CN202110675104 A CN 202110675104A CN 113451376 A CN113451376 A CN 113451376A
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- 239000000758 substrate Substances 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000005538 encapsulation Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010030 laminating Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 278
- 239000010408 film Substances 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
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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
- H10K59/131—Interconnections, e.g. wiring lines or terminals
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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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
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- Chemical & Material Sciences (AREA)
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Abstract
The invention discloses a display panel, which comprises a fingerprint area, wherein the display panel comprises an array substrate layer and a light-emitting layer, the light-emitting layer is positioned on the array substrate layer, the light-emitting layer comprises a cathode layer, the cathode layer comprises a first cathode layer positioned in the fingerprint area, the first cathode layer comprises a plurality of cathode parts, and the plurality of cathode parts are used for fingerprint identification; this scheme is used as fingerprint identification through the first cathode layer in the cathode layer to at the inside integrated fingerprint identification function of display panel, avoid at the outside fingerprint module of laminating of screen, reduced the holistic thickness of display panel and cost of manufacture.
Description
Technical Field
The invention relates to the technical field of display, in particular to the technical field of display panel manufacturing, and particularly relates to a display panel.
Background
Fingerprint identification technology has been widely used in a plurality of displays with interactive functions due to its good security and convenience, among which, on-screen fingerprint identification is the most widespread.
At present, mainly through fingerprint identification in order to realize the screen at screen below laminating fingerprint module, this kind of structure though has the high screen and accounts for the ratio, but because the fingerprint module is located the screen below, leads to the size of panel module also to increase simultaneously, has increased the holistic thickness of display panel and cost of manufacture.
In view of the above, it is desirable to provide a display panel with a smaller thickness and a lower manufacturing cost.
Disclosure of Invention
The embodiment of the invention provides a display panel, and aims to solve the problems that the size of a panel module is increased and the overall thickness and manufacturing cost of the display panel are increased due to the fact that an existing fingerprint module is located below a screen.
An embodiment of the present invention provides a display panel, where the display panel includes a fingerprint area, and the display panel includes:
an array substrate layer;
a light emitting layer on the array substrate layer, the light emitting layer comprising a cathode layer;
wherein the cathode layer comprises a first cathode layer in the fingerprint area, the first cathode layer comprising a plurality of cathode portions for fingerprint identification.
In an embodiment, in the fingerprint identification stage, the first cathode layer is used for fingerprint identification; and in the stage except fingerprint identification, the first cathode layer loads a cathode signal for picture display.
In one embodiment, the display panel further includes:
the line changing layer is positioned on one side, close to the array substrate layer, of the first cathode layer and comprises a plurality of routing lines, and the routing lines are distributed along the edge of the display panel;
the arrangement density of the plurality of wires is smaller than that of the plurality of cathode portions, and the plurality of cathode portions are connected to the plurality of wires in a divergent mode.
In one embodiment, the light emitting layer includes:
an anode layer on a side of the cathode layer adjacent to the array substrate layer;
the array substrate layer comprises:
the anode layer is electrically connected with the source drain layer;
and the wire changing layer and the anode layer are arranged in the same layer, and/or the wire changing layer and the source drain layer are arranged in the same layer.
In one embodiment, the display panel further includes:
the electrode layer is arranged on the light-emitting layer in an insulating mode;
the electrode layer comprises a first electrode layer located in the fingerprint area, the first electrode layer comprises a plurality of first electrode portions, the first electrode portions and the cathode portions are arranged in an intersecting mode, a plurality of mutual capacitances are formed between the first electrode portions and the cathode portions, and the cathode portions and the first electrode portions are used for fingerprint identification.
In an embodiment, the display panel further comprises a non-fingerprint region surrounding the fingerprint region;
the electrode layer further comprises a second electrode layer located in the non-fingerprint area, the second electrode layer comprises a plurality of second electrode portions, and the second electrode portions are used for touch identification.
In an embodiment, during the fingerprint identification phase, the first electrode layer and the first cathode layer are used for fingerprint identification; and at a stage except fingerprint identification, the first electrode layer and the second electrode layer are used for touch identification.
In one embodiment, the plurality of second electrode parts are arranged in an array, and a self-capacitance is formed between each second electrode part and the ground.
In one embodiment, the electrode layer includes a first region, a second region, and a third region, the first region and the second region being arranged along a first direction, the third region and the first region being arranged along a second direction, the first direction being perpendicular to the second direction, the electrode layer including:
the first electrode wires are respectively and electrically connected to the second electrode parts in the first area, and extend to the lower part of the third area from the direction far away from the second area;
the second electrode wires are respectively and electrically connected to the second electrode parts in the second area and extend to the lower part of the third area from the direction far away from the first area;
and the third electrode wires are respectively and electrically connected to the second electrode parts in the third area and extend to the lower part of the third area from the direction far away from the first area and the second area.
In one embodiment, the electrode layer is composed of a metal mesh, the metal mesh comprising a plurality of meshes;
the light emitting layer includes:
a light emitting device layer on a side of the cathode layer adjacent to the array substrate layer, the light emitting device layer comprising a plurality of light emitting devices, a projection of each of the light emitting devices on the electrode layer being located within a corresponding one of the cells;
the display panel further includes:
an encapsulation layer on the light emitting layer;
the color film layer is located on the packaging layer and comprises a black matrix layer, a plurality of openings are formed in the black matrix layer, the projection of each light-emitting device on the color film layer is located in the corresponding opening, and the projection of the black matrix layer on the electrode layer covers the metal grid.
The display panel provided by the embodiment of the invention comprises a fingerprint area, and the display panel comprises: an array substrate layer; a light emitting layer on the array substrate layer, the light emitting layer comprising a cathode layer; wherein the cathode layer comprises a first cathode layer in the fingerprint area, the first cathode layer comprising a plurality of cathode portions for fingerprint identification. This scheme is through inciting somebody to action first cathode layer in the cathode layer sets up to including a plurality of negative pole portions to as fingerprint identification, avoided at the outside fingerprint module of laminating of screen, in order to avoid increasing the size of panel module, also reduced the holistic thickness of display panel and cost of manufacture.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention.
Fig. 3 is a schematic cross-sectional view of another display panel according to an embodiment of the invention.
Fig. 4 is a schematic top view of a light emitting device and an electrode layer according to an embodiment of the present invention.
Fig. 5 is a schematic top view of an electrode layer according to an embodiment of the invention.
Fig. 6 is a schematic top view of a color film layer according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and continuously described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "away", "close", "up", and the like, indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more, and unless otherwise specifically limited, "electrically connected" means that both are electrically connected, and is not limited to being directly connected or indirectly connected. In addition, it should be noted that the drawings only provide a structure closely related to the present invention, and some details which are not related to the present invention are omitted, so as to simplify the drawings and make the invention clear, but not to show that the device in practice is the same as the drawings and not to limit the device in practice.
Embodiments of the present invention provide a display panel including, but not limited to, the following embodiments and combinations of the following embodiments.
In one embodiment, as shown in fig. 1 to 3, the display panel 100 includes a fingerprint area 01, and the display panel 100 includes: an array substrate layer 10; a light emitting layer 20, the light emitting layer 20 being located on the array substrate layer 10, the light emitting layer 20 comprising a cathode layer 201; wherein the cathode layer 201 comprises a first cathode layer in the fingerprint area 01, the first cathode layer comprises a plurality of cathode portions 2011, and the plurality of cathode portions 2011 are used for fingerprint identification. It is understood that, as shown in fig. 1 to 3, the display panel 100 further includes a non-fingerprint region 02, the non-fingerprint region 02 may be disposed around the fingerprint region 01, the fingerprint region 01 may be disposed near, but not limited to, a lower edge of the display panel 100, and the fingerprint region 01 and the non-fingerprint region 02 may constitute a display region of the display panel 100. It should be noted that, as shown in fig. 2 to fig. 3, the cathode layer may further include a second cathode layer 2012, the second cathode layer 2012 is located in the non-fingerprint region 02, the second cathode layer 2012 is insulated from the first cathode layer, and the second cathode layer 2012 may be separately disposed from the first cathode layer.
Specifically, the light emitting layer 20 further includes a light emitting device layer and an anode layer located in the non-fingerprint area 02, the light emitting device layer is located between the anode layer and the first cathode layer, the anode layer includes a plurality of anode portions 202, the light emitting device layer includes a plurality of light emitting devices 203, the plurality of light emitting devices 203 and the plurality of anode portions 202 are arranged in a one-to-one correspondence manner, the second cathode layer 2012 and each of the anode portions 202 provide corresponding currents to the corresponding light emitting devices 203, and thus, the light emitting device layer emits light under the control of the anode layer and the second cathode layer, so as to realize the image display of the display panel 100. It can be understood that, in the present invention, the first cathode layer in the cathode layer 201 is set as an electrode for fingerprint identification, so that a fingerprint module is not attached to the outside of the screen, and the thickness and the manufacturing cost of the whole display panel 100 are reduced.
In an embodiment, in the fingerprint identification stage, the first cathode layer is used for fingerprint identification; and in the stage except fingerprint identification, the first cathode layer loads a cathode signal for picture display. The fingerprint identification may be implemented by a self-capacitance type sensing structure or a mutual capacitance type sensing structure, and here, the fingerprint identification implemented by the self-capacitance type sensing structure is described as an example. Specifically, a plurality of the cathode portions 2011 may be arranged in an array, and a plurality of the cathode portions 2011 and the ground form a plurality of self-capacitors therebetween, and a plurality of the cathode portions 2011 located in the same row may be electrically connected to the same fingerprint scan line, and a plurality of the cathode portions 2011 located in the same column may be electrically connected to the same fingerprint data line, and may sequentially apply fingerprint scan signals to a plurality of the fingerprint scan lines, and one of the fingerprint scan lines applies fingerprint scan signals, and a plurality of the fingerprint data lines are simultaneously and respectively applied with a plurality of fingerprint drive signals, and a plurality of the fingerprint data lines may output fingerprint sensing signals, through which a plurality of the cathode portions 2011 and the ground may be determined to form a plurality of self-capacitors therebetween, thereby performing fingerprint identification.
As can be seen from the above discussion, in the fingerprint identification stage, the cathode portions 2011 of the first cathode layer may be applied with the fingerprint driving signals and output the fingerprint sensing signals at different times, and it can be understood that when a finger touches the fingerprint area 01, the fingerprint scanning lines and the fingerprint data lines control the cathode portions 2011 to perform fingerprint identification, and at this time, the display frame in the fingerprint area 01 may be determined by the actual voltage values of the cathode portions 2011 in the fingerprint area 01; in a stage other than the fingerprint recognition stage, the cathode portions 2011 and the second cathode layer 2012 in the first cathode layer may be loaded with the same cathode signal, and each anode portion 202 may be loaded with a corresponding anode signal, so that the light emitting devices 203 in the fingerprint area 01 and the non-fingerprint area 02 may emit the corresponding brightness to display the display area on the screen. It can be understood that the first cathode layer in the present invention can be reused for fingerprint identification and image display, and on the premise of reducing the overall thickness and manufacturing cost of the display panel 100, the integrity of the image display performed in the display area can be ensured, and the influence of fingerprint identification on the image display can be reduced.
In an embodiment, as shown in fig. 2 to 3, the display panel 100 further includes: an electrode layer 30, wherein the electrode layer 30 is insulated from the light-emitting layer 20; the electrode layer 30 includes a first electrode layer located in the fingerprint area 01, the first electrode layer includes a plurality of first electrode portions 301, the plurality of first electrode portions 301 and the plurality of cathode portions 2011 are arranged in an intersecting manner, a plurality of mutual capacitances are formed between the plurality of first electrode portions 301 and the plurality of cathode portions 2011, and the plurality of cathode portions 2011 and the plurality of first electrode portions 301 are used for fingerprint identification.
The first electrode portions 301 may be arranged in parallel, the cathode portions 2011 may be arranged in parallel, each of the first electrode portions 301 and each of the cathode portions 2011 have an overlapping area, the overlapping area is a fingerprint sensing point, and the arrangement manner of the cathode portions 2011 may be the same as the arrangement manner when fingerprint identification is realized by a self-contained sensing structure. Specifically, here, the following description will be given by taking as an example that the arrangement and the line connection of the plurality of cathode portions 2011 are the same as those in the case of implementing fingerprint recognition by using a self-contained induction structure: in the fingerprint identification stage, a plurality of first electrode portions 301 in the first electrode layer may be applied with a fingerprint working signal at the same time, may be applied with a fingerprint scanning signal to a plurality of fingerprint scanning lines in sequence, when one of the fingerprint scanning lines is applied with a fingerprint scanning signal, a plurality of fingerprint data lines are applied with a plurality of fingerprint driving signals at the same time, respectively, and a plurality of fingerprint data lines may output a fingerprint sensing signal, and through the fingerprint driving signal and the fingerprint sensing signal, a plurality of mutual capacitances formed between the plurality of cathode portions 2011 and the plurality of first electrode portions 301 may be determined, so as to perform fingerprint identification. As can be appreciated, in the present invention, by providing the first electrode layer, a plurality of mutual capacitances are formed between the plurality of first electrode portions 301 and the plurality of cathode portions 2011 to realize fingerprint identification, so that the accuracy of fingerprint identification is improved.
In an embodiment, as shown in fig. 2 to 3, the electrode layer 30 further includes a second electrode layer located in the non-fingerprint area 02, the second electrode layer includes a plurality of second electrode portions 302, and the plurality of second electrode portions 302 are used for touch recognition. It is understood that the second electrode layer and the first electrode layer may be disposed in an insulating manner to reduce mutual influence between an electrical signal in the second electrode layer and an electrical signal in the first electrode layer, and in particular, the second electrode layer and the first electrode layer may be disposed separately. Similarly, the touch identification can also be realized through a self-capacitance type induction structure or a mutual capacitance type induction structure. As can be understood, in the present invention, the second electrode layer and the first electrode layer are disposed on the same layer, so that the electrode layer can realize fingerprint identification and touch identification, thereby avoiding separately disposing a film layer to realize touch identification, and reducing the overall thickness and manufacturing cost of the display panel 100.
Specifically, as shown in fig. 4, the electrode layer 30 may be composed of, but not limited to, a metal mesh, that is, the transmission of the electrical signals in the first electrode portions 301 and the second electrode portions 302 may be realized by means of a continuous path in the metal mesh, and of course, the disconnection of the electrical signals in the electrode layer 30 may be realized by the fractures 309 in the metal mesh. Further, the metal mesh includes a plurality of meshes 308, each of the meshes 308 is disposed opposite to the corresponding light emitting device 203, and the size of each of the meshes 308 is larger than that of the corresponding light emitting device 203, so as to avoid shielding the corresponding light emitting device 203.
In an embodiment, during the fingerprint identification phase, the first electrode layer and the first cathode layer are used for fingerprint identification; and at a stage except fingerprint identification, the first electrode layer and the second electrode layer are used for touch identification. Specifically, as shown in fig. 2 to fig. 3, in combination with the above discussion, in the fingerprint identification stage, the plurality of first electrode portions 301 in the first electrode layer may be simultaneously applied with the fingerprint working signal, the plurality of cathode portions 2011 in the first cathode layer may be applied with the plurality of fingerprint driving signals through the plurality of fingerprint data lines, and output the fingerprint sensing signals to the plurality of fingerprint data lines to implement fingerprint identification; at a stage other than fingerprint identification, the first electrode portions 301 and the second electrode layer in the first electrode layer may be applied or output electric signals related to touch, so as to realize touch identification. It can be understood that the first electrode layer in the present invention can be reused for fingerprint identification and touch identification, and on the premise of reducing the thickness and manufacturing cost of the entire display panel 100, the integrity of touch identification performed in the display area can be ensured, and the influence of fingerprint identification on touch identification can be reduced.
In an embodiment, as shown in fig. 2 to 3 and 5, a plurality of the second electrode portions 302 are arranged in an array, and a plurality of self-capacitances are formed between the plurality of the second electrode portions 302 and the ground. Similarly, the plurality of second electrode portions 302 in the same row may be electrically connected to the same touch scan line, the plurality of second electrode portions 302 in the same column may be electrically connected to the same touch data line, and may sequentially apply a touch scan signal to the plurality of touch scan lines, when a touch scan signal is applied to one of the plurality of touch scan lines, the plurality of touch data lines are simultaneously and respectively applied with a plurality of touch driving signals, and the plurality of touch data lines may output a touch sensing signal, and the size of the plurality of self-capacitances formed between the plurality of second electrode portions 302 and the ground may be determined by the touch driving signal and the fingerprint sensing signal, so as to perform touch recognition.
In one embodiment, as shown in fig. 5, the electrode layer 30 includes a first region 03, a second region 04, and a third region 05, the first region 03 and the second region 04 are arranged along a first direction 011, the third region 05 and the first region 03 are arranged along a second direction 012, the first direction 011 is perpendicular to the second direction 012, and the electrode layer 30 includes: a plurality of first electrode lines 303, the plurality of first electrode lines 303 are electrically connected to the plurality of second electrode portions 302 in the first region 03, respectively, and the plurality of first electrode lines 303 extend from a direction away from the second region 04 to a position below the third region 05; a plurality of second electrode lines 304, the plurality of second electrode lines 304 are electrically connected to the plurality of second electrode portions 302 in the second area 04, respectively, and the plurality of second electrode lines 304 extend from a direction away from the first area 03 to a position below the third area 05; a plurality of third electrode lines 305, the plurality of third electrode lines 305 are electrically connected to the plurality of second electrode portions 302 located in the third area 05, respectively, and the plurality of third electrode lines 305 extend from a direction away from the first area 03 and the second area 04 to a position below the third area 05.
As shown in fig. 5, the first electrode layer located in the fingerprint area 01 is not discussed here for the moment, the outer contour of the electrode layer 30 may be rectangular, the first direction 011 may be parallel to the short side of the electrode layer 30, the second direction 012 may be parallel to the long side of the electrode layer 30, the first area 03, the second area 04, and the third area 05 may be rectangular, the short side of the first area 03, the short side of the second area 04, and the long side of the third area 05 may be parallel to the first direction 011, and the long side of the first area 03, the long side of the second area 04, and the short side of the third area 05 may be parallel to the second direction 012. Specifically, each of the first electrode lines 303 may extend along a side away from the second region 04 to a region near the left side of the electrode layer 30 in the first direction 011, and then extend along a side near the third region 05 to a region near the lower side of the electrode layer 30 in the second direction 012; each of the second electrode lines 304 may extend along a side away from the first region 03 to a region near the right side of the electrode layer 30 in the first direction 011, and then extend along a side near the third region 05 to a region near the lower side of the electrode layer 30 in the second direction 012; the plurality of third electrode lines 305 may extend along a side away from the first region 03 in the second direction 012 to an area near a lower side of the electrode layer 30. Specifically, the plurality of first electrode lines 303, the plurality of second electrode lines 304, and the plurality of third electrode lines 305 converge below the third area 05 so as to be connected to a driving circuit.
Further, as shown in fig. 5, a long side and a short side of the first region 03 may be respectively equal to a long side and a short side of the second region 04, that is, the first region 03 and the second region 04 may have the same size, and thus, the plurality of first electrode lines 303 and the plurality of second electrode lines 304 may be symmetrical with respect to a symmetry axis of the electrode layer 30 parallel to the second direction 012, so that the plurality of first electrode lines 303 and the plurality of second electrode lines 304 may be uniformly distributed in an area near both sides of the electrode layer 30. Still further, as shown in fig. 5, the long side of the first area 03 and the long side of the second area 04 may be larger than the short side of the third area 05, and the sum of the short side of the first area 03 and the short side of the second area 04 may be equal to the long side of the third area 05, so that the number of the plurality of third electrode lines 305 may be smaller, and the third area 05 is prevented from occupying more space, so as to prevent the volume of the second electrode portion 302 from being compressed, and in combination with the above description, the plurality of first electrode lines 303 and the plurality of second electrode lines 304 also do not occupy the space of the third area 05. It can be understood that, in the present invention, by disposing a plurality of the first electrode lines 303 and a plurality of the second electrode lines 304 around the periphery of the electrode layer 30, and disposing a plurality of the third electrode lines 305 in the third area 05, the number of lines in the third area 05 and the peripheral area of the electrode layer 30 can be balanced, and the screen occupation ratio of the display panel 100 and the accuracy of the touch recognition can be balanced.
In an embodiment, as shown in fig. 2 to 3, the display panel 100 further includes: a line changing layer, located on one side of the first cathode layer close to the array substrate layer 10, where the line changing layer includes a plurality of wires 401, and the plurality of wires 401 are arranged along an edge of the display panel 100; the arrangement density of the plurality of traces 401 is less than that of the plurality of cathode portions 2011, and the plurality of cathode portions 2011 are divergently connected to the plurality of traces. When the edge of the fingerprint area 01 coincides with the edge of the display panel 100, the plurality of traces 401 are arranged along the edge of the fingerprint area 01, and it can be understood that since the edge length of the display panel 100 is greater than the edge length corresponding to the fingerprint area 01, the plurality of traces 401 can be arranged sparsely, thereby avoiding signal interference caused by too close distance between two adjacent traces 401.
In one embodiment, as shown in fig. 2-3, the light-emitting layer 20 includes, in accordance with the above discussion: an anode layer on a side of the cathode layer adjacent to the array substrate layer 10. Also, the array substrate layer 10 includes: the anode layer is electrically connected with the source drain layer 101; and the wire changing layer and the anode layer are arranged in the same layer, and/or the wire changing layer and the source drain layer are arranged in the same layer. Specifically, as shown in fig. 2 to fig. 3, as can be seen from the above discussion, the anode layer includes a plurality of the anode portions 202, the light emitting device layer includes a plurality of the light emitting devices 203, further, the display panel 100 further includes a flat layer 102 located between the source drain layer 101 and the anode layer, the source drain layer 101 includes a plurality of source drain groups corresponding to the plurality of the light emitting devices 203 one to one, each of the source drain groups includes a source and a drain, and each of the anode portions 202 may extend to the corresponding source or the corresponding drain through a first via 1021 located in the flat layer 102 to be electrically connected.
Specifically, as shown in fig. 2, taking the same layer of the wire-changing layer and the anode layer as an example for illustration, a plurality of the wires 401 and a plurality of the anode portions 202 may be disposed at the same layer and prepared at the same time, and each of the wires 401 and the corresponding cathode portion 2011 are disposed oppositely. Further, as shown in fig. 2 to fig. 3, the display panel 100 further includes a pixel defining layer 103 located between the anode layer and the cathode layer, a corresponding pixel opening is provided in a position corresponding to each anode portion 202 in the pixel defining layer 103 to accommodate the corresponding light emitting device 203, further, the display panel 100 further includes a plurality of supporting portions 104 located on the pixel defining layer 103, two supporting portions 104 are respectively provided on the pixel defining layer 103 near two ends of each light emitting device 203, and the supporting portions 104 can prevent raw materials of the light emitting devices 203 from overflowing during the manufacturing process; as shown in fig. 2, the pixel definition layer further extends to the wire changing layer, a corresponding second via 1031 is disposed at a position corresponding to each wire 401 in the pixel definition layer 103, and each cathode 2011 can extend to the corresponding wire 401 through the second via 1031 for electrical connection.
Specifically, as shown in fig. 3, for example, the layer of the wire changing layer and the layer of the source/drain layer 101 are arranged at the same layer, a plurality of the wires 401 and a plurality of the sources and a plurality of the drains in the source/drain layer 101 can be arranged at the same layer and prepared at the same time, the plurality of the wires 401 include a plurality of first wires 4011 and a plurality of second wires 4012, and each of the first wires 4011, the corresponding second wire 4012, and the corresponding cathode portion 2011 are arranged oppositely. Further, the planarization layer 102 further extends to the wire changing layer, and a corresponding third via 1022 is disposed at a position corresponding to each of the traces 401 in the planarization layer 102, each of the cathode portions 2011 may be electrically connected to the first trace 4011 on the pixel definition layer 103 through the second via 1031, and the first trace 4011 extends to the corresponding second trace 4012 on the planarization layer 102 through the third via 1022 to be electrically connected. It can be understood that the resistivity of the material forming the source/drain layer 101 may be smaller than the resistivity of the material forming the anode layer, and therefore, the width of the trace 401 may be set smaller when the wire changing layer and the source/drain layer 101 are arranged in the same layer and at the same time, so as to further avoid signal interference caused by too close distance between two adjacent traces 401.
In one embodiment, as shown in fig. 2-3, the light-emitting layer 20 includes, in accordance with the above discussion: a light emitting device layer on a side of the cathode layer adjacent to the array substrate layer 10, the light emitting device layer comprising a plurality of light emitting devices 203; as shown in fig. 4, the electrode layer 30 may be composed of, but not limited to, a metal grid, and a projection of each light emitting device 203 on the electrode layer 30 is located in the corresponding grid 308. As shown in fig. 2 to 3, the display panel 100 further includes: an encapsulation layer 40, the encapsulation layer 40 being located on the light emitting layer; the color film layer 50 is located on the encapsulation layer, the color film layer 50 includes a black matrix layer 501, as shown in fig. 4 and fig. 6, a plurality of openings are provided in the black matrix layer 501, the projection of each light emitting device 203 on the color film layer 50 is located in the corresponding opening, and the projection of the black matrix layer 501 on the electrode layer 30 covers the metal mesh.
As shown in fig. 2 to 3 and 6, the color film layer 50 further includes a plurality of optical filters 502, and each optical filter 502 is disposed opposite to the corresponding light emitting device 203. Specifically, the black matrix layer 501 forms a plurality of openings to accommodate a plurality of the light-emitting devices 502, and the width of each opening is greater than the width of the corresponding light-emitting device 203, so that the width of the corresponding light-emitting device 203 is greater than the width of the corresponding light-emitting device 502. Specifically, the black matrix layer 501 may be formed first, and then a plurality of the optical filter portions 502 may be formed in the plurality of openings by a yellow light process or an inkjet printing technique, where each of the optical filter portions 502 may make the light emitted by the corresponding light emitting device 203 show a corresponding color.
Further, when the electrode layer 30 is disposed on the light emitting layer 20 in an insulating manner, the encapsulation layer 40 is disposed between the light emitting layer and the electrode layer 30 to encapsulate the light emitting layer, so as to prevent external impurities from entering the light emitting layer, and the color film layer 50 may be disposed on the electrode layer 30. It can be understood that the electrode layer further includes a plurality of electrode traces, each of the electrode traces is electrically connected to the corresponding first electrode portion or the corresponding second electrode portion, the plurality of electrode traces and the plurality of electrode portions are formed by the metal grids, and a moire phenomenon exists in a display picture due to differences among metal grid structures of the first electrode portion, the second electrode portion and the electrode traces.
It is understood that, as shown in fig. 2 to 3, the array substrate layer 10 may further include a substrate layer 108, a light shielding layer 105 disposed on the substrate layer 108, a buffer layer 106 disposed on the light shielding layer 105, a thin-film transistor layer 107 disposed on the buffer layer 106, and the planarization layer 102 disposed on the thin-film transistor layer 107, where the thin-film transistor layer 107 includes a plurality of active layers 1071 disposed on the buffer layer 106, a first gate insulating layer 1072 disposed on the plurality of active layers 1071 and the buffer layer 106, a plurality of first gate layers 1073 disposed on the first gate insulating layer 1072, a plurality of second gate insulating layers 1074 disposed on the second gate insulating layer 1074, an interlayer dielectric layer 1076 disposed on the second gate insulating layer 1074 and the plurality of second gate layers 1075, and the interlayer dielectric layer 101 disposed on the interlayer dielectric layer 1076, further, a fourth via hole 1077 and a fifth via hole 1078 are formed in the first gate insulating layer 1072, the second gate insulating layer 1074 and the interlayer dielectric layer 1076, the fourth via hole 1077 and the source are oppositely arranged, the fifth via hole 1078 and the drain are oppositely arranged, the source extends to one side of the active layer 1071 through the fourth via hole 1077 to realize electrical connection, and the drain extends to the other side of the active layer 1071 through the fifth via hole 1078 to realize electrical connection.
The display panel provided by the embodiment of the invention comprises a fingerprint area, and the display panel comprises: an array substrate layer; a light emitting layer on the array substrate layer, the light emitting layer comprising a cathode layer; wherein the cathode layer comprises a first cathode layer in the fingerprint area, the first cathode layer comprising a plurality of cathode portions for fingerprint identification. This scheme is through inciting somebody to action first cathode layer in the cathode layer sets up to including a plurality of negative pole portions to as fingerprint identification, avoided at the outside fingerprint module of laminating of screen, in order to avoid increasing the size of panel module, also reduced the holistic thickness of display panel and cost of manufacture.
The display panel provided by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the description of the above embodiment is only used to help understanding the technical scheme and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A display panel, the display panel including a fingerprint area, the display panel comprising:
an array substrate layer;
a light emitting layer on the array substrate layer, the light emitting layer comprising a cathode layer;
wherein the cathode layer comprises a first cathode layer in the fingerprint area, the first cathode layer comprising a plurality of cathode portions for fingerprint identification.
2. The display panel of claim 1, wherein, in a fingerprint identification phase, the first cathode layer is used for fingerprint identification; and in the stage except fingerprint identification, the first cathode layer loads a cathode signal for picture display.
3. The display panel of claim 1, wherein the display panel further comprises:
the line changing layer is positioned on one side, close to the array substrate layer, of the first cathode layer and comprises a plurality of routing lines, and the routing lines are distributed along the edge of the display panel;
the arrangement density of the plurality of wires is smaller than that of the plurality of cathode portions, and the plurality of cathode portions are connected to the plurality of wires in a divergent mode.
4. The display panel according to claim 3, wherein the light-emitting layer comprises:
an anode layer on a side of the cathode layer adjacent to the array substrate layer;
the array substrate layer comprises:
the anode layer is electrically connected with the source drain layer;
and the wire changing layer and the anode layer are arranged in the same layer, and/or the wire changing layer and the source drain layer are arranged in the same layer.
5. The display panel according to any one of claims 1 to 4, wherein the display panel further comprises:
the electrode layer is arranged on the light-emitting layer in an insulating mode;
the electrode layer comprises a first electrode layer located in the fingerprint area, the first electrode layer comprises a plurality of first electrode portions, the first electrode portions and the cathode portions are arranged in an intersecting mode, a plurality of mutual capacitances are formed between the first electrode portions and the cathode portions, and the cathode portions and the first electrode portions are used for fingerprint identification.
6. The display panel of claim 5, wherein the display panel further comprises a non-fingerprint region surrounding the fingerprint region;
the electrode layer further comprises a second electrode layer located in the non-fingerprint area, the second electrode layer comprises a plurality of second electrode portions, and the second electrode portions are used for touch identification.
7. The display panel of claim 6, wherein the first electrode layer and the first cathode layer are used for fingerprint recognition during a fingerprint recognition stage; and at a stage except fingerprint identification, the first electrode layer and the second electrode layer are used for touch identification.
8. The display panel according to claim 6, wherein a plurality of the second electrode portions are arranged in an array, and a self capacitance is formed between each of the second electrode portions and ground.
9. The display panel according to claim 8, wherein the electrode layer includes a first region, a second region, and a third region, the first region and the second region being arranged in a first direction, the third region and the first region being arranged in a second direction, the first direction being perpendicular to the second direction, the electrode layer including:
the first electrode wires are respectively and electrically connected to the second electrode parts in the first area, and extend to the lower part of the third area from the direction far away from the second area;
the second electrode wires are respectively and electrically connected to the second electrode parts in the second area and extend to the lower part of the third area from the direction far away from the first area;
and the third electrode wires are respectively and electrically connected to the second electrode parts in the third area and extend to the lower part of the third area from the direction far away from the first area and the second area.
10. The display panel according to claim 5, wherein the electrode layer is constituted by a metal mesh including a plurality of meshes;
the light emitting layer includes:
a light emitting device layer on a side of the cathode layer adjacent to the array substrate layer, the light emitting device layer comprising a plurality of light emitting devices, a projection of each of the light emitting devices on the electrode layer being located within a corresponding one of the cells;
the display panel further includes:
an encapsulation layer on the light emitting layer;
the color film layer is located on the packaging layer and comprises a black matrix layer, a plurality of openings are formed in the black matrix layer, the projection of each light-emitting device on the color film layer is located in the corresponding opening, and the projection of the black matrix layer on the electrode layer covers the metal grid.
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| CN202110675104.2A CN113451376A (en) | 2021-06-18 | 2021-06-18 | Display panel |
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| CN202110675104.2A CN113451376A (en) | 2021-06-18 | 2021-06-18 | Display panel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114510160A (en) * | 2022-01-28 | 2022-05-17 | 云谷（固安）科技有限公司 | Touch panel and display device |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793804A (en) * | 2015-05-12 | 2015-07-22 | 京东方科技集团股份有限公司 | Touch control substrate, display device, manufacturing method of touch control substrate and drive method of display device |
| US20150254491A1 (en) * | 2014-03-07 | 2015-09-10 | Focaltech Systems, Ltd. | Display device, driving circuit, method for driving display device, and electronic apparatus |
| CN107068720A (en) * | 2017-04-19 | 2017-08-18 | 上海天马微电子有限公司 | Organic light-emitting diode display panel and display device |
| CN206774549U (en) * | 2017-04-26 | 2017-12-19 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN108649061A (en) * | 2018-05-18 | 2018-10-12 | 武汉华星光电半导体显示技术有限公司 | Oled display panel and oled display |
| CN108762542A (en) * | 2018-03-30 | 2018-11-06 | 上海天马微电子有限公司 | Display panel and display device |
| CN109119453A (en) * | 2018-09-25 | 2019-01-01 | 武汉天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN109346507A (en) * | 2018-11-09 | 2019-02-15 | 京东方科技集团股份有限公司 | OLED touch display substrate, production method, driving method and display device |
| CN208938076U (en) * | 2018-08-24 | 2019-06-04 | 北京集创北方科技股份有限公司 | Touch control display apparatus |
| CN110427121A (en) * | 2019-07-05 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | Touch control display apparatus with fingerprint identification function |
| CN110427125A (en) * | 2019-07-19 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | Touch control display apparatus |
| CN112257524A (en) * | 2020-10-09 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification display panel and fingerprint identification display device |
-
2021
- 2021-06-18 CN CN202110675104.2A patent/CN113451376A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150254491A1 (en) * | 2014-03-07 | 2015-09-10 | Focaltech Systems, Ltd. | Display device, driving circuit, method for driving display device, and electronic apparatus |
| CN104793804A (en) * | 2015-05-12 | 2015-07-22 | 京东方科技集团股份有限公司 | Touch control substrate, display device, manufacturing method of touch control substrate and drive method of display device |
| CN107068720A (en) * | 2017-04-19 | 2017-08-18 | 上海天马微电子有限公司 | Organic light-emitting diode display panel and display device |
| CN206774549U (en) * | 2017-04-26 | 2017-12-19 | 上海天马微电子有限公司 | Touch display panel and touch display device |
| CN108762542A (en) * | 2018-03-30 | 2018-11-06 | 上海天马微电子有限公司 | Display panel and display device |
| CN108649061A (en) * | 2018-05-18 | 2018-10-12 | 武汉华星光电半导体显示技术有限公司 | Oled display panel and oled display |
| CN208938076U (en) * | 2018-08-24 | 2019-06-04 | 北京集创北方科技股份有限公司 | Touch control display apparatus |
| CN109119453A (en) * | 2018-09-25 | 2019-01-01 | 武汉天马微电子有限公司 | Display panel, manufacturing method thereof and display device |
| CN109346507A (en) * | 2018-11-09 | 2019-02-15 | 京东方科技集团股份有限公司 | OLED touch display substrate, production method, driving method and display device |
| CN110427121A (en) * | 2019-07-05 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | Touch control display apparatus with fingerprint identification function |
| CN110427125A (en) * | 2019-07-19 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | Touch control display apparatus |
| CN112257524A (en) * | 2020-10-09 | 2021-01-22 | 武汉华星光电半导体显示技术有限公司 | Fingerprint identification display panel and fingerprint identification display device |
Non-Patent Citations (1)
| Title |
|---|
| 姜贝贝，闪赛等: "内嵌式电容触摸屏的分时复用技术研究", 《河南科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114510160A (en) * | 2022-01-28 | 2022-05-17 | 云谷（固安）科技有限公司 | Touch panel and display device |
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