CN115020619B - Display panel and mobile terminal - Google Patents
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- CN115020619B CN115020619B CN202210804870.9A CN202210804870A CN115020619B CN 115020619 B CN115020619 B CN 115020619B CN 202210804870 A CN202210804870 A CN 202210804870A CN 115020619 B CN115020619 B CN 115020619B
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- 239000011159 matrix material Substances 0.000 claims abstract description 30
- 239000010410 layer Substances 0.000 claims description 146
- 239000002184 metal Substances 0.000 claims description 47
- 229910052751 metal Inorganic materials 0.000 claims description 47
- 239000010408 film Substances 0.000 claims description 26
- 239000010409 thin film Substances 0.000 claims description 20
- 239000012780 transparent material Substances 0.000 claims description 20
- 239000002346 layers by function Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000002834 transmittance Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 238000002161 passivation Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000012356 Product development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- OFIYHXOOOISSDN-UHFFFAOYSA-N tellanylidenegallium Chemical compound [Te]=[Ga] OFIYHXOOOISSDN-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000028161 membrane depolarization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000004984 smart glass Substances 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
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application provides a display panel and a mobile terminal, wherein the display panel comprises a display area and a display function subarea positioned in the display area, the display panel further comprises an array substrate, a luminous function layer and a color film layer, the array substrate comprises a control circuit, the color film layer comprises a plurality of color resistors and a black matrix positioned between the color resistors, the black matrix comprises a plurality of first openings positioned in the display function subarea, and the first openings are arranged at intervals with projection of the control circuit on the color film layer; through set up a plurality of first openings that are located the display function subregion in black matrix, and a plurality of first openings are the interval setting with the projection of control circuit on the color film layer, have increased the light transmission area and the transmissivity of black matrix, have promoted fingerprint identification's precision.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a mobile terminal.
Background
With the development of Organic Light-Emitting Diode (OLED) display technology, a folded or fully flexible panel will become one of the main development directions of mobile terminals such as mobile phones in the future, which requires the panel to have more advantages of thinner panel, stronger bending resistance and the like. At present, a Polarizer-Less (POL-Less) technology using Color Filters (CFs) to replace Polarizers (POLs) has appeared, which significantly reduces the thickness of a display panel and can increase the light extraction rate from 42% to 60%, and a POL-Less technology based on Color filters is considered as one of key technologies for realizing dynamic bending product development. The color film layer basic structure comprises Red (Red, R) color resistance, green (Green, G) color resistance, blue (B) color resistance and Black Matrix (BM), and the color resistance needs to be respectively corresponding to Red, green and Blue sub-pixel units of the OLED based on the self-luminous characteristic of the OLED. However, due to the fact that the BM in the POL-Less structure is opaque, the transmittance of the POL-Less panel is low when the POL-Less panel is matched with the optical screen for fingerprint identification, fingerprint identification accuracy is affected, and user experience is greatly reduced.
Disclosure of Invention
The embodiment of the application provides a display panel, including a display area and a display function subregion that is located in display area AA, the display panel includes:
the array substrate comprises a control circuit, wherein the control circuit comprises a scanning line, a data line and a pixel driving circuit connected with the scanning line and the data line;
the light-emitting functional layer is positioned on one side of the array substrate;
the color film layer is positioned at one side of the light-emitting functional layer far away from the array substrate and comprises a plurality of color resistors and a black matrix positioned between the color resistors;
the black matrix comprises a plurality of first openings positioned in the display function subareas, and the first openings and the projection of the control circuit on the color film layer are arranged at intervals.
In the display panel provided by the embodiment of the application, the black matrix includes a shielding sub-portion located in the display function sub-region, and the control circuit includes a wiring sub-portion located in the display function sub-region;
the projection of the shielding sub-part on the array substrate covers the wiring sub-part, and the shape of the shielding sub-part corresponds to the shape of the wiring sub-part.
In the display panel provided by the embodiment of the application, the light-emitting functional layer includes a cathode layer, the cathode layer includes a plurality of second openings located in the display functional sub-regions, and one of the second openings is disposed corresponding to one of the first openings.
In the display panel provided in the embodiment of the present application, in the first opening and the corresponding second opening, an area of the second opening is located in an area of the first opening.
In the display panel provided in the embodiment of the application, a transparent material is disposed in each of the first openings and/or each of the second openings.
In the display panel provided by the embodiment of the application, the display panel further comprises a touch layer, wherein the touch layer comprises a touch metal layer;
the first openings and the projection of the touch metal layer on the color film layer are arranged at intervals.
In the display panel provided by the embodiment of the application, the array substrate comprises an insulating layer;
the insulating layer comprises a plurality of grooves positioned in the display function subareas, one groove is arranged corresponding to one first opening, and the depth of the groove is smaller than or equal to that of the insulating layer.
In the display panel provided in the embodiment of the present application, the pixel driving circuit includes at least one thin film transistor, and the array substrate at least includes:
a first metal layer, which is laminated with the insulating layer and comprises a grid electrode of the thin film transistor and the scanning line;
a second metal layer, which is provided in a stacked manner with the first metal layer and the insulating layer, and includes source and drain electrodes of the thin film transistor and the scanning line;
the orthographic projection of the black matrix on the array substrate covers the first metal layer, and the orthographic projection of the black matrix on the array substrate covers the second metal layer.
In the display panel provided in the embodiment of the present application, a shape of the first opening is rectangular, circular, triangular or L-shaped.
The embodiment of the application provides a mobile terminal, which comprises a terminal main body and the display panel in any of the embodiments, wherein the terminal main body and the display panel are combined into a whole.
The beneficial effects of this application are: the application provides a display panel and mobile terminal, through set up a plurality of first openings that are located the display function subregion in black matrix, and a plurality of first openings are the interval setting with the projection of control circuit on the color filter layer, have increased the printing opacity area and the transmissivity of black matrix, have promoted fingerprint identification's precision.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the disclosure;
FIG. 2 is a schematic diagram showing a first cross-sectional structure of a display panel in a display function sub-area according to an embodiment of the present disclosure;
FIG. 3 is a schematic top view of the scan lines, data lines and pixel driving circuits in FIG. 1;
FIG. 4 is a schematic diagram of a second cross-sectional structure of a display panel in a display function sub-area according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a third cross-sectional structure of a display panel in a display function sub-area according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of a top view of a 7T1C pixel driving circuit and an anode in a sub-pixel region according to an embodiment of the present application;
fig. 7 is a schematic top view of a color film layer in a sub-pixel area in an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a group of embodiments of the present application, not the full group of embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless specifically defined otherwise.
The embodiment of the application provides a display panel and a mobile terminal. The following will describe in detail. The following description of the embodiments is not intended to limit the preferred embodiments.
Referring to fig. 1-3, an embodiment of the present application provides a display panel, including a display area AA and a display function sub-area AB located in the display area AA, where the display panel includes an array substrate 1, a light-emitting function layer located at one side of the array substrate 1, and a color film layer 2 located at one side of the light-emitting function layer away from the array substrate 1; the array substrate 1 includes a control circuit 4, the control circuit 4 including a scan line 10, a data line 20, and a pixel driving circuit 30 connected to the scan line 10 and the scan line 10; the color film layer 2 comprises a plurality of color resistors 21 and a black matrix 22 positioned between the color resistors 21; the black matrix 22 includes a plurality of first openings 221 located in the display function sub-area AB, and the plurality of first openings 221 are spaced from the projection of the control circuit 4 on the color film layer 2.
It will be appreciated that with the development of OLED display technology, future folding or fully flexible panels will become one of the main development directions of mobile terminals such as mobile phones, which will require the panels to have more advantages such as thinner panels and stronger bending resistance. At present, a depolarization POL-Less technology using CF to replace POL is presented, which significantly reduces the thickness of the display panel, and can improve the light extraction rate from 42% to 60%, and the POL-Less technology based on color film is considered as one of key technologies for realizing dynamic bending product development. The color film layer basic structure comprises R, G, B color resistance and BM, and the color resistance is required to be respectively corresponding to red, green and blue sub-pixel units of the OLED based on the self-luminous characteristic of the OLED. However, since the BM in the POL-pass structure is opaque, the transmittance of the POL-pass panel is low when the POL-pass panel is used for fingerprint identification with the optical screen, which affects the fingerprint identification accuracy, and greatly reduces the user experience.
In this embodiment, referring to fig. 3, the control circuit 4 is configured to provide an electrical signal required by the display panel, for example, the control circuit 4 is configured to control on and off of a light emitting unit in a light emitting functional layer, the control unit includes a scan line 10, a data line 20, and a pixel driving circuit 30, a plurality of the scan lines 10 extend along a first direction X and are arranged along a second direction Y, a plurality of the scan lines 10 extend along the second direction Y and are arranged along the first direction X, the plurality of the scan lines 10 and the plurality of the scan lines 10 divide the array substrate 1 into a plurality of sub-pixel regions, one of the pixel driving circuit 30 is located in one of the sub-pixel regions, the scan line 10 is connected to a gate electrode 223 in the thin film transistor, the scan line 10 is connected to a source drain electrode 251 in the thin film transistor, a plurality of the first openings 221 are not overlapped with the scan line 10, the gate electrode 223, and the source drain electrode 251 on the color film layer 2,
it should be noted that, referring to fig. 2 and 6, the pixel driving circuit 30 includes at least one thin film transistor and a capacitor, one thin film transistor may be a single gate thin film transistor, one thin film transistor may be a dual gate thin film transistor, one thin film transistor may include a source/drain electrode, one thin film transistor may include a dual source/drain electrode, the thin film transistor includes the source/drain electrode 251, the gate 223, and the semiconductor active layer 1311, the pixel driving circuit 30 may include a 7T1C circuit structure, the 7T1C circuit includes 7 thin film transistors and 1 capacitor, the pixel driving circuit 30 may also include a 2T1C circuit structure, the 2T1C circuit includes 2 thin film transistors and 1 capacitor, and the pixel driving circuit 30 of a corresponding type may be selected according to different application scenarios, for convenience of description, in this embodiment, the pixel driving circuit 30 is a 7T1C circuit structure.
It should be noted that, the plurality of first openings 221 are spaced from the projection of the control circuit 4 on the color film layer 2, which means that the plurality of first openings 221 are spaced from the projection of the control circuit 4 located in the display function sub-area AB on the color film layer 2; the display function subarea AB may be a fingerprint identification area, and the fingerprint identification module 3 of the fingerprint identification area is located at a side of the array substrate 1 away from the color film layer 2.
In some embodiments, referring to fig. 1-3 and 6, the black matrix 22 comprises a shielding sub-section 222 located within the display function sub-section AB, and the control circuit 4 comprises a routing sub-section located within the display function sub-section AB; the projection of the shielding sub-portion 222 on the array substrate 1 covers the wiring sub-portion, and the shape of the shielding sub-portion 222 corresponds to the shape of the wiring sub-portion.
It will be appreciated that the black matrix 22 includes the shielding sub-portion 222 located within the display function sub-area AB, the shielding sub-portion 222 is disposed around the first opening 221, the control circuit 4 includes the routing sub-portion located within the display function sub-area AB, the routing sub-portion includes the scan line 10, and the driving pixel circuit, the projection of the shielding sub-portion 222 on the array substrate 1 covers the scan line 10, and the pixel driving circuit 30, and the shape of the shielding sub-portion 222 corresponds to the shape of the scan line 10, and the pixel driving circuit 30; specifically, the pixel driving circuit 30 includes a plurality of the gate electrodes 223 and a plurality of the source and drain electrodes 251, the shape of the shielding sub-portion 222 corresponds to the shape of the scan line 10, and the driving pixel driving circuit 30, that is, the projections of the scan line 10, the gate electrodes 223, and the source and drain electrodes 251 on the array substrate 1 are overlapped together to form an overlapped projection, the shape profile of the projection of the shielding sub-portion 222 on the array substrate 1 is similar to the shape profile of the overlapped projection, and the projection of the shielding sub-portion 222 on the array substrate 1 covers the overlapped projection, and the projection of the shielding sub-portion 222 on the array substrate 1 needs to be as small as possible beyond the area of the overlapped projection, which is favorable for maximizing the area of the first opening 221 and can maximize the light transmittance.
In some embodiments, referring to fig. 2-3, the light emitting functional layer includes a cathode layer 31, the cathode layer 31 includes a plurality of second openings 311 located in the display functional sub-area AB, and one of the second openings 311 is disposed corresponding to one of the first openings 221.
It can be understood that the cathode layer 31 includes a plurality of the second openings 311 located in the display function sub-area AB, one of the second openings 311 is disposed corresponding to one of the first openings 221, that is, the plurality of the second openings 311 are disposed avoiding the scan lines 10, and the pixel driving circuit 30, in other words, the plurality of the second openings 311 are disposed at intervals from the projections of the scan lines 10, and the source/drain electrodes 251 on the cathode layer 31, and the cathode layer 31 is provided with a plurality of the second openings 311 to improve the light transmittance, thereby further increasing the fingerprint recognition precision.
It should be noted that, the light-emitting functional layer includes a pixel defining layer 17, the pixel defining layer 17 is provided with a plurality of openings, a light-emitting unit is disposed in one of the openings, the color film layer 2 is provided with a plurality of color resistors 21, one of the color resistors 21 is disposed corresponding to one of the light-emitting units, the cathode layer 31 is disposed between the pixel defining layer 17 and the color film layer 2, the cathode layer 31 includes a transparent electrode, and the performance of the transparent electrode is not affected by the arrangement of the second opening 311.
In some embodiments, with continued reference to fig. 2-3, one of the first openings 221 and the corresponding one of the second openings 311, the area of the second opening 311 is located within the area of the first opening 221.
It is understood that, in order to avoid the influence of the scanning line 10, and the pixel driving circuit 30 on the light transmittance of the display panel, the second openings 311 are disposed corresponding to the first openings 221, the number of the second openings 311 is smaller than or equal to the number of the first openings 221, and in the second direction Y, any one of the second openings 311 is disposed within one of the first openings 221, and in one of the first openings 221 corresponding to the second opening 311, the area of the second opening 311 is disposed within the area of the first opening 221, in other words, the total area of the second openings 311 is smaller than or equal to the total area of the first openings 221.
In some embodiments, referring to fig. 4, a transparent material is disposed within each of the first openings 221 and/or each of the second openings 311.
It will be appreciated that the first openings 221 are disposed on the black matrix 22, the second openings 311 are disposed on the cathode layer 31, and the second openings 311 are disposed corresponding to the first openings 221, where the transparent material is disposed in the first openings 221 and/or the second openings 311, that is, only the transparent material is disposed in the first openings 221, and all the first openings 221 are disposed with the transparent material or part of the first openings 221 are disposed with the transparent material, only the transparent material is disposed in the second openings 311, and all the second openings 311 are disposed with the transparent material or part of the transparent material is disposed in the second openings 311, or both the first openings 221 and/or the second openings 311 are disposed with the transparent material, and the first openings 221 and/or the second openings 311 are disposed with the transparent material may have a part of the strength capable of causing light loss when passing through the transparent material, but the first openings 221 and/or the second openings 311 are disposed with the transparent material or the transparent material is filled with the transparent material or the transparent material, and the first openings 221 and/or the second openings 311 are filled with the transparent material or the transparent material.
In some embodiments, referring to fig. 2-3, the display panel further includes a touch layer (not shown in the drawings), and the touch layer includes a touch metal layer; the first openings 221 and the projection of the touch metal layer on the color film layer 2 are disposed at intervals.
It may be appreciated that the touch layer includes the touch metal layer, the touch metal layer may be a touch electrode, the touch metal layer may be disposed on the same layer as the source drain 251, a material of the touch metal layer includes one or more of Al, mo, and Ti, the touch layer further includes a touch trace, a material of the touch trace includes a transparent material, and in order to reduce an influence of the touch metal layer on light transmittance, the first opening 221 needs to be disposed avoiding the touch metal layer located in the display function sub-area AB, that is, a plurality of first openings 221 and projections of the touch metal layer on the color film layer 2 are disposed at intervals; specifically, the black matrix 22 includes the shielding portion disposed around the first opening 221, the projection of the shielding portion on the array substrate 1 covers the scan line 10, the pixel driving circuit 30, and the projection of the touch metal layer on the array substrate 1, and the projections of the scan line 10, the pixel driving circuit 30, and the touch metal layer on the array substrate 1 are overlapped to form a total projection, the shape profile of the projection of the shielding portion on the array substrate 1 is similar to the shape profile of the total projection, and the projection of the shielding portion on the array substrate 1 covers the total projection, and the projection of the shielding portion on the array substrate 1 is as small as possible beyond the area of the total projection, which is beneficial to maximizing the area of the first opening 221 and maximizing the light transmittance.
In some embodiments, referring to fig. 3 and 5, the array substrate 1 includes an insulating layer; the insulating layer includes a plurality of slots 161 located in the display function sub-area AB, one slot 161 is disposed corresponding to one first opening 221, and a depth of the slot 161 is less than or equal to a depth of the insulating layer.
It can be understood that the insulating layer includes a plurality of slots 161 located in the display function sub-area AB, where one slot 161 is disposed corresponding to one first opening 221, and the depth of the slot 161 is smaller than or equal to that of the insulating layer, so as to further increase the light transmittance of the display function sub-area AB and improve the fingerprint recognition accuracy; specifically, the insulating layer includes a passivation layer 15, and a flat layer 16 located on a side of the passivation layer 15 near the color film layer 2, where a plurality of the openings may be located only on the flat layer 16, a plurality of the slots 161 may also extend through the flat layer 16 to the passivation layer 15, and the slots 161 may also extend through the flat layer 16 and the passivation layer 15, where the slots 161 are disposed corresponding to the first openings 221, that is, the slots 161 are disposed at intervals with respect to the projections of the scan lines 10, and the pixel driving circuits 30 on the array substrate 1, where the number of the slots 161 is less than or equal to the number of the first openings 221, and in the second direction Y, any one of the slots 161 has one of the first openings 221 corresponding to the first opening 221, and in one of the first openings 221 corresponding to one of the slots 161, the area of the slots 161 is located within the area of the first opening 221, that is the total area of the slots 161 is less than or equal to the total area of the first openings 221.
In some embodiments, referring to fig. 2 and 6, the pixel driving circuit 30 includes at least one thin film transistor, the array substrate 1 includes at least a first metal layer 23 stacked with the insulating layer, and a second metal layer 25 stacked with the first metal layer 23 and the insulating layer, the first metal layer 23 includes the gate electrode 223 of the thin film transistor, and the scan line 10, and the second metal layer 25 includes the source drain electrode 251 of the thin film transistor, and the scan line 10; the front projection of the black matrix 22 on the array substrate 1 covers the first metal layer 23, and the front projection of the black matrix 22 on the array substrate 1 covers the second metal layer 25.
Specifically, the thin film transistor is of a double-gate structure, that is, the first metal layer 23 includes a first metal sub-layer 231 and a second metal sub-layer 232 sequentially disposed along the second direction Y, the insulating layer includes a gate insulating layer 13, an interlayer insulating layer 14, a passivation layer 15 and a planarization layer 16 sequentially disposed along the second direction Y, the gate insulating layer 13 includes a first gate insulating layer 131 and a second gate insulating layer 132, the first metal sub-layer 231 is located at a side of the first gate insulating layer 131 far from the light emitting functional layer, the second gate insulating layer 132 covers the first metal sub-layer 231, the second metal sub-layer 232 is located at a side of the second gate insulating layer 132 far from the light emitting functional layer, the interlayer insulating layer 14 covers the second metal sub-layer 232, the second metal layer 25 is located at a side of the interlayer insulating layer 14 far from the light emitting functional layer, the passivation layer 15 covers the second metal layer 25, the first metal layer 23 includes the gate electrode 23 and the second metal line 10 and the drain electrode layer 25 include the scanning line 10.
The array substrate 1 further includes a buffer layer 12 and a substrate 11, wherein the buffer layer 12 is located on a side of the gate insulating layer 13 away from the interlayer insulating layer, the buffer layer 12 is located between the gate insulating layer 13 and the substrate 11, and the substrate includes a first substrate 111, an intermediate layer 112, and a second substrate 113.
In this embodiment, the front projection of the black matrix 22 on the array substrate 1 covers the first metal layer 23, and the front projection of the black matrix 22 on the array substrate 1 covers the second metal layer 25; specifically, the pixel driving circuit 30 is a 7T1C circuit, that is, the first metal layer 23 includes a plurality of the gates 223 and a plurality of the scan lines 10, the second metal layer 25 includes a plurality of the source and drain electrodes 251 and a plurality of the scan lines 10, the gate 223 includes a first gate 2311 and a second gate 2321, and the orthographic projection of the black matrix 22 on the array substrate 1 covers the orthographic projections of the plurality of the first gates 2311, the plurality of the second gates 2321, the plurality of the source and drain electrodes 251, the plurality of the scan lines 10, and the plurality of the data lines 20 on the array substrate 1, in other words, the first openings 221 are spaced from the projections of the plurality of the first gates 2311, the plurality of the second gates 2321, the plurality of the source and drain electrodes 251, the plurality of the scan lines 10, and the plurality of the data lines 20 on the color film layer 2.
In some embodiments, referring to fig. 3 and 7, a shape of the first opening 221 is rectangular, circular, triangular or L-shaped.
It can be understood that the first opening 221 and the projections of the plurality of control circuits 4 on the color film layer 2 are disposed at intervals, the control circuits 4 include the scan line 10, and the pixel driving circuit 30 connected to the scan line 10 and the data line, that is, the projections of the first opening 221, the scan line 10, and the pixel driving circuit 30 on the color film layer 2 are disposed at intervals, if the light transmittance is improved to the greatest extent, the shape of the first opening 221 must be in an irregular shape, the shape of the first opening 221 may be designed as a rectangle, a circle, a triangle, or an L shape, the shapes of a plurality of the first openings 221 may be the same, the shapes of a plurality of the first openings 221 may be different, the plurality of the first openings may include a first sub-opening, a second sub-opening, a third sub-opening, and a fourth sub-opening, the shape of the first sub-opening is a rectangle, a circle, a triangle, or an L shape, the shape of the second sub-opening is a rectangle, a circle, a triangle, or an L shape, the shape of the third sub-opening is a rectangle, a circle, a triangle, or an L shape, and the shape of the fourth sub-opening is a rectangle, a circle, a triangle, or an L shape.
The embodiment of the application provides a mobile terminal, which comprises a terminal main body and the display panel in any one of the embodiments, wherein the terminal main body and the display panel are combined into a whole.
In particular, mobile terminals include, but are not limited to, the following types: tablet computers, notebook computers, desktop displays, televisions, smart glasses, smart watches, naked eye 3D displays, and the like.
In this embodiment of the present application, a plurality of first openings 221 located in the display function sub-area AB are disposed in the black matrix 22, and a plurality of first openings 221 and projections of the control circuit 4 on the color film layer 2 are disposed at intervals, so that a light transmission area and a transmittance of the black matrix 22 are increased, and fingerprint recognition accuracy is improved.
The foregoing has outlined rather broadly the more detailed description of embodiments of the present application, wherein specific examples are provided herein to illustrate the principles and embodiments of the present application, the above examples being provided solely to assist in the understanding of the methods of the present application and the core ideas thereof; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (8)
1. A display panel comprising a display area and a display function sub-area within the display area, the display function sub-area being a fingerprint identification area, the display panel comprising:
the array substrate comprises a control circuit, wherein the control circuit comprises a scanning line, a data line and a pixel driving circuit connected with the scanning line and the data line, the control circuit comprises a wiring sub-part positioned in the display function subarea, and the wiring sub-part comprises the scanning line, the data line and a part of the pixel driving circuit positioned in the display function subarea;
the light-emitting functional layer is positioned on one side of the array substrate, wherein the light-emitting functional layer comprises a cathode layer, the cathode layer comprises a plurality of second openings positioned in the display functional subarea, and one second opening is arranged corresponding to one first opening of the black matrix;
the color film layer is positioned at one side of the light-emitting functional layer far away from the array substrate and comprises a plurality of color resistors and the black matrix positioned between the color resistors;
the black matrix comprises a plurality of first openings positioned in the display function subarea and a shielding sub-part positioned in the display function subarea, wherein the projections of the first openings and the wiring sub-part on the color film layer are arranged at intervals, the projections of the shielding sub-part on the array substrate cover the wiring sub-part, and the shape of the shielding sub-part corresponds to the shape of the wiring sub-part.
2. The display panel of claim 1, wherein a region of the second opening is located within a region of the first opening in one of the first opening and the corresponding one of the second openings.
3. The display panel according to claim 1, wherein a transparent material is provided in each of the first openings and/or each of the second openings.
4. The display panel of claim 1, further comprising a touch layer comprising a touch metal layer;
the first openings and the projection of the touch metal layer on the color film layer are arranged at intervals.
5. The display panel of claim 1, wherein the array substrate comprises an insulating layer;
the insulating layer comprises a plurality of grooves positioned in the display function subareas, one groove is arranged corresponding to one first opening, and the depth of the groove is smaller than or equal to that of the insulating layer.
6. The display panel of claim 5, wherein the pixel driving circuit comprises at least one thin film transistor, and the array substrate comprises at least:
a first metal layer, which is laminated with the insulating layer and comprises a grid electrode of the thin film transistor and the scanning line;
a second metal layer, which is provided in a stacked manner with the first metal layer and the insulating layer, and includes source and drain electrodes of the thin film transistor and the scanning line;
the orthographic projection of the black matrix on the array substrate covers the first metal layer, and the orthographic projection of the black matrix on the array substrate covers the second metal layer.
7. The display panel of claim 1, wherein a shape of the first opening is rectangular, circular, triangular or L-shaped.
8. A mobile terminal, characterized in that the mobile terminal comprises a terminal body and the display panel as claimed in claims 1 to 7, the terminal body being integrated with the display panel.
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| CN202210804870.9A CN115020619B (en) | 2022-07-08 | 2022-07-08 | Display panel and mobile terminal |
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