CN108899339A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN108899339A CN108899339A CN201810428359.7A CN201810428359A CN108899339A CN 108899339 A CN108899339 A CN 108899339A CN 201810428359 A CN201810428359 A CN 201810428359A CN 108899339 A CN108899339 A CN 108899339A
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 115
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- 238000010586 diagram Methods 0.000 description 15
- 238000002834 transmittance Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen 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
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel and a display device. The display panel includes a display region including a light emitting region and a non-light emitting region, the display panel including: the array layer comprises a plurality of metal wires positioned in a non-luminous area and a capacitor positioned in the non-luminous area, wherein the metal wires comprise first metal wire wires; a plurality of light emitting devices on the array layer, the light emitting devices including an anode, a light emitting layer and a cathode arranged in sequence, wherein one light emitting region includes at least one light emitting device; the first metal wire comprises a first wire section and a bridge-spanning wire section, wherein the first wire section and the bridge-spanning wire section are located on different film layers and are connected through a through hole, and at least part of the bridge-spanning wire section and a polar plate of the capacitor are arranged in an insulating and overlapping mode. The invention can increase the area of the light-permeable area in the non-light-emitting area.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
The existing display panel technology generally includes a liquid crystal display panel and an organic light emitting display panel. The liquid crystal display panel comprises an array substrate, a color film substrate and liquid crystal molecules positioned between the array substrate and the color film substrate, an electric field can be formed after voltages are applied to a pixel electrode and a common electrode in the display panel, and the liquid crystal molecules are controlled to deflect, so that the penetration rate of light penetrating through a liquid crystal molecular layer is controlled, and the display of the display panel is realized. However, the organic light emitting display panel generally includes an organic light emitting device, and a light emitting layer of the organic light emitting device can emit light when a voltage is applied to an anode and a cathode of the organic light emitting device, thereby realizing self-luminescence of the organic light emitting display panel. The organic light-emitting display panel does not need the design of a backlight source, and can be lighter and thinner, so that the design of the flexible display panel can be realized, and meanwhile, the organic light-emitting display panel also has the characteristic of low power consumption, and gradually becomes the key point of research of various manufacturers.
Therefore, it is an urgent problem to provide a display panel and a display device that can increase the light transmittance.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which solve the technical problem of increasing light transmittance.
In order to solve the above technical problem, the present invention provides a display panel, including a display region, the display region including a light emitting region and a non-light emitting region, the display panel including:
the array layer comprises a plurality of metal wires positioned in a non-luminous area and a capacitor positioned in the non-luminous area, wherein the metal wires comprise first metal wires;
a plurality of light emitting devices on the array layer, the light emitting devices including an anode, a light emitting layer and a cathode arranged in sequence, wherein one light emitting region includes at least one light emitting device;
the first metal wire comprises a first wire section and a bridge-spanning wire section, wherein the first wire section and the bridge-spanning wire section are located on different film layers and are connected through a through hole, and at least part of the bridge-spanning wire section and a polar plate of the capacitor are arranged in an insulating and overlapping mode.
Further, in order to solve the above technical problem, the present invention provides a display device including any one of the display panels.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
in the display panel and the display device provided by the invention, the bridge-crossing line segment of the first metal line arranged in the non-luminous area is overlapped with the polar plate of the capacitor in an insulating way, which is equivalent to reducing the area occupied by the metal line in the non-luminous area, correspondingly increasing the area of the light-permeable area in the non-luminous area and increasing the light transmittance.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
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 the display panel at the position of line X1 in FIG. 1;
fig. 3 is an enlarged view of a portion of the non-light emitting region at the location of region Q1 in fig. 1;
FIG. 4 is a partial schematic view of FIG. 3 at the location of region Q2;
FIG. 5 is a schematic cross-sectional view taken along line B-B' of FIG. 4;
FIG. 6 is a diagram of an equivalent pixel circuit corresponding to the circuit trace of FIG. 3;
FIG. 7 is a schematic top view of an alternative embodiment of a display panel according to an embodiment of the invention;
FIG. 8 is a schematic cross-sectional view taken at line X2 of FIG. 7;
fig. 9 is a partial schematic view of another alternative embodiment of a non-light-emitting area in a display panel according to an embodiment of the invention;
FIG. 10 is a schematic cross-sectional view taken at the location of line X3 in FIG. 9;
fig. 11 is a schematic diagram of a film layer of an array substrate in a display panel according to an embodiment of the invention;
FIG. 12 is a schematic diagram of a power line in a display panel according to an embodiment of the invention;
fig. 13 is a schematic diagram illustrating an alternative implementation of a positive power line and a light-emitting control signal line in a display panel according to an embodiment of the invention;
FIG. 14 is a schematic cross-sectional view taken along line E-E' of FIG. 13;
fig. 15 is a schematic diagram of another alternative implementation of a positive power line and a light-emitting control signal line in a display panel according to an embodiment of the disclosure;
FIG. 16 is a schematic cross-sectional view taken along line F-F' of FIG. 15;
fig. 17 is a film structure diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 18 is a schematic view of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of the display panel at a position of a tangent line X1 in fig. 1. Fig. 3 is an enlarged view of a portion of the non-light emitting region at the location of region Q1 in fig. 1. Fig. 4 is a partial schematic view of fig. 3 at the location of region Q2. Fig. 5 is a schematic cross-sectional view at the position of line B-B' in fig. 4.
As shown in fig. 1, the display panel provided by the present invention includes a display area AA, where the display area AA includes a light emitting area AA1 and a non-light emitting area AA 2. The display panel includes a light emitting device (not shown in fig. 1), and one light emitting region AA1 includes one light emitting device, that is, the region where the light emitting device is located is a light emitting region AA 1. In the non-light emitting area AA2, metal lines and capacitors (not shown in fig. 1) in the display panel circuit are usually disposed, and the metal lines and capacitors are usually made of metal material, and no light can penetrate through them, so that the area of the region through which light can penetrate in the non-light emitting area is limited. The light-penetrable layer defined in the present invention means that light can penetrate at least a portion of the film structure in the display panel in the non-light-emitting region.
With continued reference to FIG. 2, the display panel includes: the array layer 101 includes a plurality of metal lines M in a non-light emitting area AA2 and a capacitor C in the non-light emitting area, the array layer 101 is generally a multi-film stack structure, so the metal lines M may be located in different films, and in a direction perpendicular to the display panel, there may be an insulating overlap between the different metal lines, the capacitor C is formed by two plates located in different metal layers (e.g., a first plate C1 and a second plate C2 shown in fig. 2), the array layer 101 may include the metal lines M located in the same metal layer as the plates of the capacitor C, or the metal layers M located in different layers from the plates of the capacitor C, and the metal lines M and the capacitor C are only schematically shown in fig. 2. The metal lines M include a first metal line M3 (shown in fig. 3); a plurality of light emitting devices 102 on the array layer 101, the light emitting devices 102 including an anode 1021, a light emitting layer 1022, and a cathode 1023, which are sequentially arranged, wherein one light emitting region AA1 includes one light emitting device 102; the light emitting device 102 can be a structure in which light is emitted from the top or a structure in which light is emitted from the bottom, fig. 2 is only illustrated as a light emitting device in which light is emitted from the top, and in order to ensure the utilization rate of light when the display panel displays, in the light emitting device 102 shown in fig. 2, the anode 1021 is usually made of a metal reflective material, the anode 1021 is opaque, and the cathode 1023 is made of a light transmissive material, so as to ensure the transmittance of light. Optionally, an encapsulation structure 103 is further disposed on the light emitting device 102, the encapsulation structure 103 may be a rigid encapsulation or a thin film encapsulation, and the encapsulation structure 103 can prevent the light emitting device from being damaged by water and oxygen, so as to ensure a service life of the light emitting device.
Fig. 3 is a partially enlarged view of a non-light-emitting region Q1 of the display panel provided in the present invention, and it can be seen that the non-light-emitting region includes a plurality of metal lines M and capacitors C (not shown, see fig. 4), and the regions not covered by the metal lines M and the capacitors C in the non-light-emitting region are light-transmissive regions TZ (i.e., light-transmissive regions, and the regions not filled with the pattern in fig. 3 are all light-transmissive regions).
With continued reference to fig. 4, in the partial schematic diagram of the non-light-emitting region, in order to highlight the technical solution of the present invention, only the capacitor C and the first metal line M3 in the non-light-emitting region are shown in fig. 4. It can be seen that the first metal line M3 includes a first line segment M31 and a bridge segment M32, wherein the first line segment M31 and the bridge segment M32 are connected through a via K, and at least a portion of the bridge segment M32 is disposed in an insulating overlapping manner with a plate of the capacitor C. Wherein the capacitor C comprises two plates, a first plate C1 and a second plate C2, the capacitor is formed in the area where the first plate C1 and the second plate C2 overlap. Referring to fig. 5, fig. 5 shows a schematic diagram that the first line segment M31 and the bridge span segment M32 are connected through a via K, the first line segment M31 and the bridge span segment M32 are located on different metal film layers, and an insulating film layer is further disposed between the first line segment M31 and the bridge span segment M32. At least part of the bridge-crossing line segments are arranged in an insulating and overlapping mode with the polar plates of the capacitor, namely, the orthographic projection of part of the bridge-crossing line segments on the plane of the display panel is overlapped with the orthographic projection of the polar plates of the capacitor on the plane of the display panel, wherein the film layers of the bridge-crossing line segments are located between the film layers of the two polar plates of the capacitor, so that part of the bridge-crossing line segments are located between the two polar plates of the capacitor, or other structures are also available.
The capacitor and the metal wire in the display panel are both made of metal materials, the areas where the capacitor and the metal wire are located in the non-light-emitting area are both light-tight areas, and light cannot penetrate through part of the film layer structure of the display panel in the areas. In the display panel provided by the invention, the bridge-crossing line segment of the first metal line arranged in the non-luminous area is overlapped with the polar plate of the capacitor in an insulating way, which is equivalent to reducing the area occupied by the metal line in the non-luminous area, correspondingly increasing the area of the light-permeable area in the non-luminous area and increasing the light transmittance.
Optionally, with continued reference to fig. 3, the metal lines M include a scan line M1, a data line M2, a power line M4, and a light-emitting control signal line M5, and the first metal line M3 is any one of the data line M2, the scan line M1, the power line M4, or the light-emitting control signal line M5, where fig. 3 illustrates a case where the first metal line is the light-emitting control signal line M5. The wiring manner of the metal lines in the non-light-emitting area in the display panel provided by the invention can be similar to that in fig. 3 or different from that in fig. 3. Fig. 6 is an equivalent pixel circuit diagram corresponding to the circuit trace of fig. 3. Referring to the equivalent circuit diagram in fig. 6, it should be noted that fig. 6 is only an alternative embodiment provided by the present invention, and is not meant to limit the present invention. The pixel circuit comprises 7 switching tubes (T1-T7) and 1 capacitor C, and each input end of the circuit is connected with a signal line (namely a metal line) to receive a control signal to realize the control of the display brightness of the light-emitting device. The input terminal S1 and the input terminal S2 are respectively connected to a scan line M1, and the scan line M1 provides scan signals to the input terminal S1 and the input terminal S2; the data line M2 is connected to the input terminal D and provides a data voltage signal Vdata; the light emission control signal line M5 is connected to the input terminal E and supplies a light emission control signal; the power line M4 provides a power signal, and the input end PVDD and the input end PVEE are respectively connected with the power line; the display panel further comprises a reference voltage line, and the reference voltage line is connected with the input end V to provide a reference signal; the light emitting device can be kept emitting light for a certain time by charging and discharging the capacitor C in the circuit as a storage capacitor. Alternatively, referring to the metal layer structure of the display panel shown in fig. 11 at the same time, in the display panel, the scan line M1, the first line segment of the light-emitting control signal line M5, the first plate of the capacitor C, and the gate of the switching tube are located in the first metal layer 1012; the second plate of the capacitor C and the reference voltage line are in the third metal layer 1014; the data line M2 and the power line M4 are located on the fourth metal layer 1015.
Optionally, the top view shape of the bridge-crossing line segment in the display panel provided by the embodiment of the present invention may be an "n" shape as shown in fig. 4.
Further, fig. 7 is a schematic top view of an alternative implementation of the display panel according to the embodiment of the present invention. Fig. 8 is a schematic cross-sectional view taken at the position of the tangent line X2 in fig. 7. Referring to fig. 7 and 8, the display area AA of the display panel includes a fingerprint identification area Z, and the fingerprint identification area Z includes a plurality of light sensing devices 104, and the light sensing devices 104 are located on a side of the array layer 101 away from the light emitting device 102. The display panel provided by this embodiment can realize the fingerprint identification detection function, and the position and shape of the fingerprint identification area Z in fig. 7 are only schematically shown, for example, the shape of the fingerprint identification area Z may be a circle, and the position may be located at the center of the display area or the lower position in the display area, or may be located at the corner position of the display area. The light source is needed in the stage of light sensation fingerprint identification, and the light-emitting device in the display panel can be reused as the light source for fingerprint identification, or an external light source can be used as the light source for fingerprint identification. Fig. 8 only illustrates the light emitting device multiplexed as a light source for fingerprint identification. In the fingerprint identification stage, light emitted by the light emitting device 102 reaches the display surface of the display panel, and after being reflected by a touch subject W (for example, finger pulp), the light can penetrate through a part of the film structure of the display panel in a light-transmitting area of the non-light-emitting area to reach the light sensing device 104, and the light sensing device 104 determines a ridge pattern by identifying the intensity of the light, thereby implementing the fingerprint identification function. In this embodiment, a partial enlarged view of the area Q3 in fig. 7 in the non-light-emitting area AA2 in the fingerprint identification area Z can be seen with reference to fig. 3 and 4, and the first metal line M3 in the non-light-emitting area includes a first line segment M31 and a bridge segment M32, wherein the first line segment M31 and the bridge segment M32 are connected through the via K, and at least a portion of the bridge segment M32 is disposed to overlap with the plate of the capacitor C in an insulating manner. In the invention, in the non-luminous zone, at least part of the bridge-crossing line segments in the first metal lines are arranged in an insulating and overlapping way with the polar plates of the capacitor, which is equivalent to reducing the area occupied by the metal lines in the non-luminous zone, thereby increasing the area of the light-transmitting zone in the non-luminous zone, increasing the light transmittance, correspondingly increasing the light quantity of fingerprint identification in the fingerprint identification stage, and further improving the accuracy of fingerprint identification detection.
Further, fig. 9 is a partial schematic view of another alternative implementation of a non-light emitting area in a display panel according to an embodiment of the present invention. Fig. 10 is a schematic cross-sectional view taken at the position of the tangent line X3 in fig. 9. Referring to fig. 9 and 10, in the first metal line M3, the first line segment M31 extends along a first direction a, and the bridge-crossing line segment M32 includes a stub 11 extending along the first direction a and a connection line 22 extending along a second direction b, wherein the connection line 22 electrically connects the first line segment M31 and the stub 11, and the second direction b crosses the first direction a; in a direction perpendicular to the first direction a (i.e. in a direction perpendicular to the extension direction of the stub 11), the stub 11 comprises a first side B1 and a second side B2 which are oppositely arranged, wherein the first side B1 and the second side B2 as shown in fig. 10 each overlap with a plate of a capacitor C which comprises a first plate C1 and a second plate C2 as shown in the figure. In the embodiment, the first edge and the second edge of the short line are overlapped with the polar plate of the capacitor in an insulating mode, so that the overlapping area of the short line and the capacitor is the largest in the direction perpendicular to the extending direction of the short line, the area occupied by part of the first metal line in the non-luminous area is effectively reduced, and the area of the light-transmitting area in the non-luminous area is increased.
Further, with continued reference to fig. 10, the film layer where the short wire 11 is located between two plates (a first plate C1 and a second plate C2) of the capacitor C, and in a direction perpendicular to the first direction (i.e., direction e in the figure), a width d1 of the short wire 11 is less than or equal to a width of the plate of the capacitor C, and both the first side B1 and the second side B2 of the short wire 11 are overlapped with the plate of the capacitor in an insulating manner. In the capacitor C, the first plate C1 and the second plate C2 may have the same or different widths, the capacitor is formed only in the overlapping region of the first plate C1 and the second plate C2 in the array layer, and an insulating layer 1011 is further disposed between the first plate C1 and the second plate C2. The short line is arranged between the two polar plates of the capacitor in the implementation mode, the width of the short line is smaller than or equal to that of the polar plates of the capacitor, the width of the short line can be properly increased in design, the overlapping area of the short line and the capacitor is increased, the display crosstalk problem of the display panel can be improved by increasing the capacitance value, and the display performance is improved.
Furthermore, the first metal line is a light-emitting control signal line, and in the display panel provided by the invention, the array layer is of a multi-film-layer stacked structure and comprises a plurality of metal film layers and insulating layers positioned between the metal film layers. The array layer comprises a first metal layer, a second metal layer, a third metal layer and a fourth metal layer; the first line segment of the light-emitting control signal line, the scan line, and the first plate of the capacitor are located in a first metal layer (as shown in fig. 10, it can be seen in a cross-sectional view that the scan line M1 and the first plate C1 of the capacitor are located in the same metal layer), the first line segment of the light-emitting control signal line, the scan line, and the first plate of the capacitor can be manufactured in one etching process, the bridge-spanning line segment of the light-emitting control signal line is located in a second metal layer, the second plate of the capacitor is located in a third metal layer, and the data line is located in a fourth metal layer. Fig. 11 is a schematic diagram of a film layer of an array substrate in a display panel according to an embodiment of the invention. As shown in fig. 11, in the array layer, a first metal layer 1012, a second metal layer 1013, a third metal layer 1014, and a fourth metal layer 1015 are sequentially disposed, and an insulating film layer (not shown) is further disposed between the respective metal layers. Compared with the related art, the display panel provided by the invention is equivalent to the fact that the metal layer provided with the bridge-spanning line segment is added, the area of the light-transmitting area of the display panel can be increased through the arrangement of the bridge-spanning line segment, the light transmittance is increased, meanwhile, the film layer provided with the bridge-spanning line segment is arranged between the film layers provided with the polar plates of the capacitor, the capacitance value can be increased, and the display performance of the display panel is improved.
Further, in the display panel provided by the present invention, the display panel includes a power line, the power line provides a light emitting signal for the light emitting device, the power line includes an anode power line, the anode power line includes a first anode power line and a second anode power line, and the first anode power line and the second anode power line are electrically connected; the first positive power line is located on the fourth metal layer, and the second positive power line is located on the second metal layer. The first positive power line and the second positive power line are positioned on different metal layers and are electrically connected in a via hole mode; and/or the power line comprises a negative power line, the negative power line comprises a first negative power line and a second negative power line, and the first negative power line is electrically connected with the second negative power line; the first negative power line is located on the fourth metal layer, and the second negative power line is located on the second metal layer. Because the first negative power line and the second negative power line are located on different metal layers, the first negative power line and the second negative power line are electrically connected in a via hole mode. In this embodiment, the positive power lines include a first positive power line and a second positive power line, and/or the negative power lines include a first negative power line and a second negative power line. In the conventional design, the anode power line or the cathode power line is prepared by only one metal film layer, while the display panel is prepared by two metal layers, and a first anode power line and a second anode power line which are respectively positioned on the two metal layers are electrically connected, or a first cathode power line and a second cathode power line which are respectively positioned on the two metal layers are electrically connected, so that the resistance of the anode power line or the cathode power line is reduced, and further the reduction of the power consumption of the display panel can be realized.
Fig. 12 is a schematic diagram of a power line in a display panel according to an embodiment of the present invention, where as shown in fig. 12, the display panel includes a display area AA and a non-display area BA surrounding the display area AA, and the power line in the display panel includes a positive power line 10Z and a negative power line 10F. For the invention, the anode power line can be prepared by two metal layers to reduce the resistance on the anode power line, the cathode power line can be prepared by two metal layers to reduce the resistance on the cathode power line, or both the anode power line and the cathode power line are prepared by two metal layers.
In the display panel, the positive power supply line generally includes a plurality of lines, and an extending direction of the positive power supply line intersects with an extending direction of the light emission control signal line in the display panel. When the positive power line is prepared by two metal layers in the display panel, the positive power line and the jumper line section which are positioned on the same film layer with the light-emitting control signal line need to be ensured to be insulated from each other.
In an alternative implementation manner, fig. 13 is a schematic diagram of an alternative implementation manner of a positive power line and a light-emitting control signal line in a display panel according to an embodiment of the present invention. Fig. 14 is a schematic cross-sectional view taken along line E-E' of fig. 13.
Referring to fig. 13 and 14 together, the positive power line 10Z includes a first positive power line 10Z1 and a second positive power line 10Z2, the first positive power line 10Z1 and the second positive power line 10Z2 are electrically connected through a via K1, and the position of the via K1 in fig. 13 is only schematically shown; the first positive power supply line 10Z1 is located on the fourth metal layer 1015, the second positive power supply line 10Z2 and the bridge-spanning line segment M32 are both located on the second metal layer 1013, and the second positive power supply line 10Z2 and the bridge-spanning line segment M32 of the light-emitting control signal line are arranged in an insulated manner; in the extending direction of the positive power supply line 10Z, one first positive power supply line 10Z1 is electrically connected to one second positive power supply line 10Z2, the positive power supply line 10Z is insulated and crossed with a first line segment M31 (located in the first metal layer 1012) of the light emission control signal line, and the first line segment M31 is electrically connected to the bridge spanning line segment M32 through a via K. The bridge-crossing line segment of the light-emitting control signal line and the second anode power line are located on the same metal layer in the implementation mode, the bridge-crossing line segment is electrically connected with the first line segment through the through hole, the anode power line is in insulated intersection with the first power line, and the anode power line is not in intersection with the bridge-crossing line segment, so that the area of a light-permeable area of a non-light-emitting area of the display panel can be increased due to the bridge-crossing line segment, meanwhile, the second anode power line and the first anode power line which are made of the same layer of metal are electrically connected with the bridge-crossing line segment, the anode power line is prepared by two metal layers, and the resistance on the anode.
In another alternative implementation, fig. 15 is a schematic diagram of another alternative implementation of a positive power line and a light-emitting control signal line in a display panel according to an embodiment of the disclosure. Fig. 16 is a schematic cross-sectional view taken along line F-F' of fig. 15.
Referring to fig. 15 and 16, the positive power lines 10Z include a first positive power line 10Z1 and a second positive power line 10Z2, the first positive power line 10Z1 and the second positive power line 10Z2 are electrically connected through a via K2, the position of the via K2 in fig. 15 is only schematically indicated, and each second positive power line 10Z2 needs to be electrically connected with the first positive power line 10Z1 through a via K2; the first positive power supply line 10Z1 is located on the fourth metal layer 1015, the second positive power supply line 10Z2 and the bridge segment M32 of the light-emitting control signal line are both located on the second metal layer 1013, and the second positive power supply line 10Z2 and the bridge segment M32 are arranged in an insulated manner; one first positive power supply line 10Z1 is electrically connected to a plurality of second positive power supply lines 10Z2, the first positive power supply line 10Z1 is insulated from and intersects with a jumper segment M32, and the jumper segment M32 passes between two adjacent second positive power supply lines 10Z2 in the direction in which the positive power supply lines 10Z extend. In the embodiment, the bridge-spanning line segment and the second anode power lines are located on the same metal layer, and the bridge-spanning line segment penetrates through two adjacent second anode power lines in the extending direction of the anode power lines, so that the insulation between the bridge-spanning line segment and the second anode power lines is ensured. The area of the light-permeable area of the non-light-emitting area of the display panel can be increased by the arrangement of the bridge-spanning line segment in the embodiment, meanwhile, the second anode power line and the first anode power line which are made of the same layer of metal are electrically connected with each other, so that the anode power line is prepared by two metal layers, and the resistance on the anode power line is reduced.
Further, fig. 17 is a film structure diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 17, in the fingerprint identification area, the display panel further includes a fingerprint identification light source 105, and the fingerprint identification light source 105 is located on the side of the light sensing device 104 away from the array layer 101. In this embodiment, in the fingerprint identification stage, after the light emitted from the light source 105 for fingerprint identification is emitted to the surface of the display panel and then reflected by the touch main body W, the light-permeable area of the non-light-emitting area penetrates through a part of the film layer structure of the display panel to reach the light-sensing device 104, so that the fingerprint detection function can be realized. In the fingerprint identification district of display panel, the luminous control signal line that is located non-luminous district includes first line segment and overpass line segment, and wherein at least partial overpass line segment and the insulating overlap of polar plate of electric capacity can increase the area of the zone of can passing through light in the non-luminous district, at the fingerprint identification stage, can increase fingerprint identification's light quantity, and then improve the accuracy that fingerprint identification detected.
Further, in some optional embodiments, during the fingerprint identification stage, the light emitting devices in the fingerprint identification area are multiplexed as the light source for fingerprint identification. Referring to fig. 8, in the fingerprint recognition stage, after the light emitted from the light emitting device 102 is emitted to the surface of the display panel and then reflected by the touch main body W, the light penetrates through a part of the film structure of the display panel in the light permeable region of the non-light emitting region, and reaches the light sensing device 104, so that the fingerprint detection function can be realized.
Further, the present invention also provides a display device, and fig. 18 is a schematic view of the display device according to the embodiment of the present invention. The display device shown in fig. 18 includes a display panel 100 according to any of the embodiments of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like.
According to the embodiment, the display panel and the display device of the invention have the following beneficial effects:
in the display panel and the display device provided by the invention, the bridge-crossing line segment of the first metal line arranged in the non-luminous area is overlapped with the polar plate of the capacitor in an insulating way, which is equivalent to reducing the area occupied by the metal line in the non-luminous area and correspondingly increasing the area of the light-permeable area in the non-luminous area.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (12)
1. A display panel including a display region including a light-emitting region and a non-light-emitting region, the display panel comprising:
the array layer comprises a plurality of metal wires positioned in the non-light-emitting area and a capacitor positioned in the non-light-emitting area, wherein the metal wires comprise first metal wires;
a plurality of light emitting devices on the array layer, the light emitting devices including an anode, a light emitting layer and a cathode arranged in sequence, wherein one of the light emitting regions includes at least one of the light emitting devices;
the first metal wire comprises a first wire section and a bridge-spanning wire section, wherein the first wire section and the bridge-spanning wire section are located on different films and connected through a through hole, and at least part of the bridge-spanning wire section and a polar plate of the capacitor are arranged in an insulating and overlapping mode.
2. The display panel according to claim 1,
the first metal wire is any one of a data wire, a scanning wire, a power wire or a light-emitting control signal wire.
3. The display panel according to claim 1,
the display area comprises a fingerprint identification area, the fingerprint identification area comprises a plurality of light sensing devices, and the light sensing devices are located on one side, far away from the light emitting devices, of the array layer.
4. The display panel according to claim 1,
the first line segment extends along a first direction, the bridge spanning line segment comprises a short line extending along the first direction and a connecting line extending along a second direction, wherein the connecting line electrically connects the first line segment and the short line, and the second direction is crossed with the first direction;
in a direction perpendicular to the first direction, the stub includes a first side and a second side disposed opposite to each other, wherein the first side and the second side are insulated from and overlapped with the plate of the capacitor.
5. The display panel according to claim 4,
the film layer where the short line is located between the two polar plates of the capacitor,
and the width of the short line is less than or equal to the width of a polar plate of the capacitor along the direction vertical to the first direction.
6. The display panel according to claim 2,
the array layer comprises a first metal layer, a second metal layer, a third metal layer and a fourth metal layer;
the first metal wire is the light-emitting control signal wire, the first line segment of the light-emitting control signal wire, the scanning wire and the first polar plate of the capacitor are positioned on the first metal layer, the bridge-crossing line segment of the light-emitting control signal wire is positioned on the second metal layer, the second polar plate of the capacitor is positioned on the third metal layer, and the data wire is positioned on the fourth metal layer.
7. The display panel according to claim 6,
in the array layer, the first metal layer, the second metal layer, the third metal layer and the fourth metal layer are sequentially arranged.
8. The display panel according to claim 6,
the power line comprises a positive power line, the positive power line comprises a first positive power line and a second positive power line, and the first positive power line is electrically connected with the second positive power line; the first positive power line is located on the fourth metal layer, and the second positive power line is located on the second metal layer; and/or the presence of a gas in the gas,
the power line comprises a negative power line, the negative power line comprises a first negative power line and a second negative power line, and the first negative power line is electrically connected with the second negative power line; the first negative power line is located on the fourth metal layer, and the second negative power line is located on the second metal layer.
9. The display panel according to claim 8,
the first positive power line is located on the fourth metal layer, the second positive power line is located on the second metal layer, and the second positive power line and the bridge-spanning line segment of the light-emitting control signal line are arranged in an insulated mode;
in the extending direction of the positive power lines, one first positive power line is electrically connected with one second positive power line, and the positive power lines are in insulated intersection with the first line sections of the light-emitting control signal lines; or,
the first positive power line is electrically connected with the plurality of second positive power lines, the first positive power line is in insulated intersection with the bridge-spanning line segment of the light-emitting control signal line, and the bridge-spanning line segment of the light-emitting control signal line passes through the two adjacent second positive power lines in the extending direction of the positive power lines.
10. The display panel according to claim 3,
the display panel further comprises a light source for fingerprint identification, and the light source for fingerprint identification is located on one side, far away from the array layer, of the light sensing device.
11. The display panel according to claim 3,
in the fingerprint identification stage, the light-emitting devices in the fingerprint identification area are multiplexed as a light source for fingerprint identification.
12. A display device characterized by comprising the display panel according to any one of claims 1 to 11.
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