CN108550602B - Display panel and display device - Google Patents
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- CN108550602B CN108550602B CN201810361176.8A CN201810361176A CN108550602B CN 108550602 B CN108550602 B CN 108550602B CN 201810361176 A CN201810361176 A CN 201810361176A CN 108550602 B CN108550602 B CN 108550602B
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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Abstract
The invention discloses a display panel and a display device. The display panel comprises a display area, the display area comprises a luminous area and a non-luminous area, and the array layer comprises a substrate layer and a plurality of metal wires positioned in the non-luminous area; the display layer is positioned on the array layer and comprises a plurality of light-emitting devices, and each light-emitting device comprises an anode, a light-emitting layer and a cathode; the support structure is positioned between two adjacent light-emitting devices and positioned in the non-light-emitting area; the fingerprint identification area is positioned in the display area and comprises a plurality of light sensing devices, and the light sensing devices are positioned on one side of the array layer, which is far away from the display layer; the supporting structure comprises a first supporting structure, the first supporting structure is located in the fingerprint identification area, the orthographic projection of the first supporting structure on the substrate layer is a first projection, the orthographic projection of the metal wire on the substrate layer is a second projection, and the overlapping area of the first projection and the second projection is not less than 80% of the area of the first projection. The invention can increase the light quantity required by fingerprint identification received by the light sensing device and improve the fingerprint identification precision.
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
With the development of science and technology, a variety of display devices with fingerprint identification functions appear in the market, such as mobile phones, tablet computers, intelligent wearable devices and the like. The fingerprint is unique for every person, and the safety factor of the display device can be improved by adopting the fingerprint identification function. When a user operates the display device with the fingerprint identification function, the user can touch the fingerprint identification sensor of the display device with a finger to carry out authority verification, and the authority verification process is simplified.
The light sensing fingerprint identification technology generally performs fingerprint identification by detecting light reflected to a fingerprint identification unit through a touch subject (such as a finger), i.e., determining ridges and valleys of a fingerprint. The current light sensation fingerprint identification technology identifies fingerprints by detecting intensity differences of reflected light rays of fingerprint valleys and ridges. The fingerprint identification sensing unit (i.e. the light sensing device) receives a large amount of light, so that the fingerprint identification accuracy is high, and the light sensing device receives a small amount of light, so that the fingerprint identification accuracy is low.
Therefore, it is an urgent need in the art to provide a display panel and a display device that increase the amount of light received by the light sensor and improve the fingerprint recognition accuracy.
Disclosure of Invention
In view of this, the present invention provides a display panel and a display device, which solve the technical problem of improving the fingerprint identification precision.
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 substrate layer and a plurality of metal wires positioned in the non-light-emitting area;
a display layer over the array layer, the display layer comprising:
a plurality of light emitting devices including an anode, a light emitting layer, and a cathode, wherein one light emitting region includes one light emitting device;
a plurality of support structures located between two adjacent light emitting devices and located in the non-light emitting region;
the display panel also comprises a fingerprint identification area positioned in the display area, the fingerprint identification area comprises a plurality of light sensing devices, and the light sensing devices are positioned on one side of the array layer, which is far away from the display layer;
the supporting structure comprises a first supporting structure, the first supporting structure is located in the fingerprint identification area, the orthographic projection of the first supporting structure on the substrate layer is a first projection, the orthographic projection of the metal wire on the substrate layer is a second projection, and the overlapping area of the first projection and the second projection is not less than 80% of the area of the first projection.
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 provided by the invention, the display area comprises the fingerprint identification area, the relative position relation between the metal wire in the non-luminous area of the fingerprint identification area and the first support structure is designed, so that the overlapping area of the first projection and the second projection is not less than 80% of the first projection area, when the first projection and the second projection are not overlapped completely, part of fingerprint identification light needs to penetrate through the first support structure to reach the light sensing device, and the more the overlapping area of the first projection and the second projection is, the smaller the area ratio of the area of the first support structure in the light-permeable area is, the first support structure is arranged in the area with the metal wire as much as possible, the area ratio of the area of the first support structure in the light-permeable area can be reduced, the light penetration rate required by part of fingerprint identification is increased, and the light quantity required by fingerprint identification received by the light sensing device can be increased, and the fingerprint identification precision is improved.
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 diagram illustrating a structure of a film layer of the display panel at a position of a cut line Q1 in FIG. 1;
FIG. 3 is an enlarged fragmentary view of FIG. 1 at the location of area Q2;
FIG. 4 is a schematic cross-sectional view of an alternative embodiment of a display panel according to an embodiment of the invention;
FIG. 5 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a portion of a fingerprint identification area of a display panel according to an embodiment of the present invention;
FIG. 7 is a partial schematic view of an alternative embodiment of a fingerprint identification area in a display panel according to an embodiment of the present invention;
FIG. 8 is a partial schematic view of another alternative embodiment of a fingerprint identification area in a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a film structure of another alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 11 is a schematic view of a display device according to an embodiment of the 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, fig. 2 is a film structure diagram of the display panel at a position of a cut line Q1 in fig. 1, and fig. 3 is a partially enlarged view of a region Q2 in fig. 1. The invention is understood with reference to figures 1, 2 and 3.
As shown in fig. 1, the display panel 100 includes a display area AA, where the display area AA includes a light emitting area AA1 and a non-light emitting area AA2, where the display area AA is an area of the display panel for displaying a picture, and the display area AA includes a plurality of sub-pixels, and in order to realize display of a color picture, the sub-pixels include a plurality of colors, such as a red sub-pixel, a blue sub-pixel, a green sub-pixel, or a white sub-pixel, and adjacent sub-pixels need to be separated by non-light emitting areas in order to ensure that crosstalk is not generated during display, and one light emitting area AA1 in the present invention corresponds to one sub-pixel, and the non-light emitting area AA2 is a non-light emitting area of the adjacent spaced AA 1. The shape and arrangement of the light emitting regions in fig. 1 are merely schematic representations and are not intended to limit the present invention.
As shown in fig. 2, the display panel includes: the array layer 101 includes a substrate layer 1011 and a plurality of metal lines M (the metal lines M in fig. 1 and fig. 2 are only schematically represented) located in the non-light-emitting region AA2, the array layer 101 is a multi-film stacked structure, the substrate layer 1011 is shown in the drawing, in practice, the array layer 101 includes a plurality of traces, the plurality of traces may include a portion located in the light-emitting region AA1 and a portion located in the non-light-emitting region AA2, and the metal lines M defined in the present invention are traces located in the non-light-emitting region AA 2; the display layer 102 is disposed on the array layer 101, the display layer 102 includes a plurality of light emitting devices 1021, the light emitting devices 1021 include an anode a, a light emitting layer b, and a cathode c, wherein one light emitting region AA1 includes one light emitting device 1021; a plurality of support structures 103 are disposed between two adjacent light emitting devices 1021 and in the non-light emitting area AA2, the display panel generally includes a pixel defining layer 106 for defining a light emitting area AA1 and a non-light emitting area AA2, and the support structures 103 are generally disposed above the pixel defining layer 106 and below the cathode c. An encapsulation structure, a polarizer, a protective film, and the like may also be disposed over the display layer 102. The light emitting device 1021 may be a top emission structure or a bottom emission structure, and fig. 2 only illustrates the top emission structure, in order to ensure the light utilization rate when the display panel displays, in the top emission structure, the anode a is usually made of a metal reflective material, the anode a is opaque, and the cathode c is made of a transparent material, so as to ensure the light transmittance, that is, in the display panel, the area where the anode a is located is the light emitting area AA 1.
The display panel 100 further comprises a fingerprint identification area Z located in the display area AA, the shape and location of which in fig. 1 is only schematically indicated. As shown in fig. 2, 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 display layer 102; the supporting structure 103 includes a first supporting structure 1031, the first supporting structure 1031 is located in the fingerprint identification region Z, as shown in fig. 3 with continued reference, fig. 3 illustrates a local metal wiring pattern of the non-light-emitting region, the structure of the pixel driving circuit is generally complex, and includes a plurality of metal lines M extending laterally or longitudinally in the figure, and a plurality of vias K are further included in the driving circuit for realizing the circuit connection. The routing of the metal lines in fig. 3 is only a schematic representation and is not a limitation of the present invention. The orthographic projection of the first support structure 1031 on the substrate layer 1011 is a first projection, the orthographic projection of the metal wire M on the substrate layer 1011 is a second projection, and the overlapping area of the first projection and the second projection is not less than 80% of the area of the first projection. The metal wires M arranged in the display panel are complex, the wiring direction of the metal wires M is not unique, and the metal wires M are not concentrated at the position of the non-luminous area. In practice, however, the area of the second projection of the metal wire M can be calculated, and fig. 3 only illustrates an optional case that the first projection and the second projection of the first support structure 1031 overlap, where the overlapping area of the first projection and the second projection is not less than 80% of the area of the first projection, which means that the overlapping area of the first support structure and the metal wire of the non-light-emitting region is not less than 80% of the area of the support structure in the direction perpendicular to the panel surface of the display panel.
In the display panel provided by the invention, the display area comprises a fingerprint identification area, in the fingerprint identification detection stage, the non-luminous area of the display panel penetrates through the display layer by the light reflected by the touch main body W (which can be the finger pulp of a user), and then penetrates through the array layer to reach the light sensing device, so that the fingerprint identification is realized. The light emitting device in the display panel can be used as a light source for fingerprint identification or an external light source, and fig. 2 only shows the light path direction of light required for fingerprint identification when the light emitting device is used as a light source for fingerprint identification in a fingerprint identification stage. The luminous area in the display area of the display panel comprises a reflective metal (such as an anode in a luminous device), light cannot penetrate through the reflective metal, the light for fingerprint identification can only penetrate through the non-luminous area to reach the light sensing device, the non-luminous area also comprises a metal wire and a supporting structure, the light cannot penetrate through the area where the metal wire is located to reach the light sensing device, the supporting structure is usually made of organic materials, the light has certain transmittance when penetrating through the supporting structure, the light can penetrate through the supporting structure to reach the light sensing device, and certain light loss is still caused when the light penetrates through the supporting structure. The area where the metal wire is located in the non-light-emitting area is a light-tight area for light required by fingerprint identification, so that the area where the light required by fingerprint identification is transmitted in the display panel is limited, and the area where the support structure is located in the light-transmitting area has a certain area ratio. In the invention, the relative position relationship between the metal wire in the non-luminous area of the fingerprint identification area and the first support structure is designed, so that the overlapping area of the first projection and the second projection is not less than 80% of the area of the first projection, when the first projection and the second projection are not overlapped completely, part of fingerprint identification light needs to penetrate through the first support structure to reach the light sensing device, and the more the overlapping area of the first projection and the second projection is, the smaller the area occupation ratio of the area where the first support structure is located in the light-permeable area is (wherein, the area occupation ratio is the ratio of the area of the part of the first support structure located in the light-permeable area to the area of the light-permeable area), part of light which needs to penetrate through the first support structure does not penetrate through the first support structure any more, the light loss formed by penetrating through the first support structure is reduced, and the penetration rate of part of fingerprint identification light is improved, the first supporting structure is arranged in the area with the metal wires as much as possible, and the area ratio of the area where the first supporting structure is located in the light-permeable area can be reduced as much as possible, so that the light transmittance required by fingerprint identification is increased, the light quantity required by the fingerprint identification received by the light sensing device can be increased, and the fingerprint identification precision is improved.
In some optional embodiments, in the display panel provided in this embodiment of the present invention, an orthogonal projection of the first support structure on the substrate layer is a first projection, an orthogonal projection of the metal line on the substrate layer is a second projection, and an overlapping area of the first projection and the second projection is not less than 90% of an area of the first projection.
Optionally, fig. 4 is a schematic cross-sectional view of an alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 4, the array layer 101 includes a plurality of thin film transistors T as switching devices of sub-pixels in the display panel. Thin film transistorT includes an active layer T1, a source T2, a drain T3 and a gate T4, which is exemplarily shown in fig. 4 only by the thin film transistor T with a top gate structure, it should be noted that the thin film transistor T in the present invention may also be a bottom gate structure; the anode a of the light emitting device 1021 is electrically connected to the source T2 or the drain T3 of the thin film transistor T, and fig. 4 schematically shows that the anode a is electrically connected to the drain T3 of the thin film transistor T. The specific meanings of the reference numerals in fig. 4 can be explained with reference to the corresponding embodiment in fig. 2. Only the top-emission light emitting device structure of fig. 4 is taken as an example, in which the anode a is used as a reflective electrode, is usually made of a metal material, and may be formed of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, or a mixture thereof; the light emitting layer b may include a red light emitting layer, a green light emitting layer, a blue light emitting layer, or a white light emitting layer; the cathode c is a transparent electrode and may include Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), zinc oxide (ZnO), or indium oxide (In)2O3) And the like; the anode a can effectively reflect the light emitted by the light emitting layer b to the light emitting side, and the light emitting efficiency is improved.
Further, in some optional embodiments, the display panel provided by the present invention, the support structure in the fingerprint identification area only includes a first support structure, an orthogonal projection of the first support structure on the substrate layer is a first projection, an orthogonal projection of the metal line on the substrate layer is a second projection, and an overlapping area of the first projection and the second projection is not less than 80% of an area of the first projection. This embodiment has a significant difference from the related art, in which the relative positional relationship of the support structure and the metal wire is not considered. In the fingerprint identification area, all the supporting structures are arranged in the area with the metal wires as much as possible, the overlapping area of the supporting structures and the metal wires of the non-luminous area is not less than 80% of the area of the supporting structures in the direction perpendicular to the panel surface of the display panel, which is equivalent to reducing the area ratio of the area where the first supporting structure is located in the light-permeable area, the light penetration rate required by partial fingerprint identification can be increased, the light quantity required by the fingerprint identification received by the light sensing device can be increased, and the fingerprint identification precision is improved.
Further, fig. 5 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 5, the display area AA further includes a non-fingerprint identification area FZ, and the supporting structure 103 further includes a second supporting structure 1032, where the number of the second supporting structures 1032 arranged in the unit area of the non-fingerprint identification area FZ is equal to the number of the first supporting structures 1031 arranged in the unit area of the fingerprint identification area Z. In the fingerprint identification zone Z, an orthogonal projection of the first support structure 1031 on the substrate layer is a first projection, an orthogonal projection of the metal line M (not shown) on the substrate layer is a second projection, and an overlapping area of the first projection and the second projection is not less than 80% of an area of the first projection. In this embodiment, set up the relative position relation of first bearing structure and metal wire in fingerprint identification district, with the penetration rate that increases the required light of partial fingerprint identification in fingerprint identification district, improve the fingerprint identification precision, simultaneously, the number that sets up second bearing structure in the unit area in non-fingerprint identification district equals the number that sets up first bearing structure in the unit area in fingerprint identification district, the density that sets up first bearing structure in the fingerprint identification district in the explanation display panel equals the density that sets up second bearing structure in the non-fingerprint identification district, the whole mechanical properties stability of display panel has been guaranteed.
In some optional embodiments, in the display panel provided in the embodiment of the present invention, the number of the second support structures arranged in the unit area of the non-fingerprint identification region is equal to the number of the first support structures arranged in the unit area of the fingerprint identification region. In fingerprint identification district, the orthographic projection of first supporting structure on the base plate layer is first projection, and the orthographic projection of metal wire on the base plate layer is the second projection, and the first projection is no less than 80% of first projection area with the overlapping area of second projection. The area of the first projection is S1, the orthographic projection of the second support structure on the substrate layer is a third projection, and the area of the third projection is S3; the area of the non-luminous area in the fingerprint identification area is SZThe area of the non-luminous area in the non-fingerprint identification area is SFZ(ii) a In the fingerprint identification area, the ratio of the sum of the areas of all the first projections to the area of the non-luminous area is x, i.e. the ratio
In the non-fingerprint identification area, the ratio of the sum of the areas of all the third projections to the area of the non-luminous area is y, i.e. the ratio
Wherein x is less than or equal to y.
In this embodiment, the density of the first supporting structures in the fingerprint identification area is equal to the density of the second supporting structures in the non-fingerprint identification area, when x is y, the average value of all the first projected areas is equal to the average value of all the second projected areas (the sizes of the supporting structures in the display panel may be different, and the fingerprint identification area and the non-fingerprint identification area are both the same, so the relationship between the size of a single first projected area and the size of a single second projected area is measured by the average value), which is equivalent to the average size of a single first supporting structure is equal to the average size of a single second supporting structure, the setting densities and sizes of the supporting structures in the fingerprint identification area and the non-fingerprint identification area are both the same in the display panel, and this embodiment can increase the light transmittance required for partial fingerprint identification in the fingerprint identification area without changing the mechanical strength of the display panel, the light quantity of the fingerprint identification received by the light sensing device can be increased, and the fingerprint identification precision is improved; optional x < y, can set up first bearing structure's density in guaranteeing that the fingerprint identification district equals under the prerequisite of the density that sets up the second bearing structure in the non-fingerprint identification district, the size of the first bearing structure in the fingerprint identification district is reduced to an appropriate amount, considers the influence to display panel mechanical strength during the design simultaneously to increase the required light penetration rate of partial fingerprint identification in the fingerprint identification district, improve the fingerprint identification precision.
In some alternative embodiments, fig. 6 is a schematic partial top view of a fingerprint identification area in a display panel according to an embodiment of the present invention. As shown in fig. 6, in the fingerprint identification area, an orthogonal projection of the first support structure 1031 on the substrate layer is a first projection Y1, an orthogonal projection of the metal line M on the substrate layer is a second projection Y2, and the first projection Y1 is located in the second projection Y2. The display panel comprises a plurality of metal wires M, the wiring direction of the metal wires M is not unique, and the first projection Y1 is located in the second projection Y2, which comprises a plurality of conditions: the first projection Y1 is located within the orthographic projection of the single metal wire M on the substrate layer; two or more metal lines M are located at different layers of the array layer but cross over each other in an insulating manner, the first projection Y1 is located in the orthogonal projection of the plurality of metal lines crossing over each other in the insulating manner on the substrate layer, and the like. Fig. 6 only schematically shows the positional relationship between the first projection and the second projection.
In this embodiment, first projection is located the second projection in the fingerprint identification district, the overlapping area of first projection and second projection is 100% of first projection area, the area of the non-luminous district of fingerprint identification district is only the area size of second projection, through the size of the first bearing structure in the adjustment fingerprint identification district in this embodiment, the projection of the base plate layer of making first bearing structure is located the projection of metal wire on the base plate layer, at the fingerprint identification stage, fingerprint identification light all need not pierce through first bearing structure, light loss has been reduced, the light penetration rate has been improved, thereby can increase the fingerprint identification light quantity that light sense device received, improve the fingerprint identification precision.
In some alternative embodiments, the fingerprint identification area has a plurality of first support structures with different projection areas. Fig. 7 is a partial schematic view of an alternative embodiment of a fingerprint identification area in a display panel according to an embodiment of the present invention. As shown in fig. 7, there are a plurality of first support structures 1031 in the fingerprint identification zone Z, and the projected areas of the plurality of first support structures 1031 are different. Optionally, fig. 8 is a partial schematic view of another optional implementation manner of the fingerprint identification area in the display panel according to the embodiment of the present invention. As shown in fig. 8, there are a plurality of first support structures 1031 in the fingerprint identification zone Z, the projection areas of the plurality of first support structures 1031 are different, and the orthographic projection (i.e. the first projection Y1) of the first support structures 1031 on the substrate layer is located within the orthographic projection (i.e. the second projection Y2) of the metal line M on the substrate layer. In this embodiment, can set up first bearing structure according to the specific position of the luminous district interior metal wire in the fingerprint identification district, first bearing structure's size of a dimension can be different, guarantees that first bearing structure is located the orthographic projection of metal wire on the base plate layer at the orthographic projection of base plate layer to increase the penetration rate of partial fingerprint identification light, improve the fingerprint identification precision.
Further, as shown in fig. 3, the metal lines M in the non-light-emitting area of the display panel include: the scan line M1, the data line M2, the reference voltage line M3, or the control signal line M4 may further include a power line M5. The scan line M1 provides scan signals to the sub-pixels (one sub-pixel includes a light emitting device) in the light emitting region AA1 of the display panel, the data line M2 provides data signals to the sub-pixels, the reference voltage line M3 is connected to the anode of the light emitting device, a signal is provided to reset the node initialization anode in the display period, and the control signal line M4 controls the light emitting device to emit light by controlling the on of the transistor device. Fig. 3 only shows an alternative routing manner of the metal lines in the display panel, and the invention is not limited thereto.
Optionally, in the display panel provided by the present invention, an extending direction of the first supporting structure 1031 parallel to the substrate layer is the same as an extending direction of at least one of the scan line M1, the data line M2, the reference voltage line M3, or the control signal line M4 in fig. 3. The first supporting structure is arranged in the area with the metal wires as much as possible, the area ratio of the area where the first supporting structure is located in the light-permeable area is reduced, the penetration rate of partial fingerprint identification light is increased, and therefore the light-permeable area required by fingerprint identification is increased.
In some optional embodiments, fig. 9 is a schematic diagram of another optional embodiment of the display panel according to the embodiment of the present invention, as shown in fig. 9, the display region further includes a non-fingerprint identification region FZ, the supporting structure 103 further includes a second supporting structure 1032, and the number of the first supporting structures 1031 arranged in the unit area of the fingerprint identification region Z is smaller than the number of the second supporting structures 1032 arranged in the unit area of the non-fingerprint identification region FZ. In fingerprint identification district Z, the orthographic projection of first supporting structure 1031 on the base plate layer is first projection, and the orthographic projection of metal wire on the base plate layer is the second projection, and the first projection is no less than 80% of first projection area with the overlapping area of second projection. In this embodiment, through setting up the relative position relation of first bearing structure and array layer in the metallic wire, reduce the area that first bearing structure place is regional in can passing through light district and compare, increase the transmissivity of part fingerprint identification light, increase the light quantity that light sense device received the required light of fingerprint identification, the number that sets up first bearing structure in the unit area in fingerprint identification district is less than the number that sets up second bearing structure in the unit area in non-fingerprint identification district simultaneously, bearing structure's density that sets up has been reduced in fingerprint identification district, further reduce the area that first bearing structure place is regional in can passing through light district and compare, increase the light quantity that light sense device received the required light of fingerprint identification. In practice, the mechanical strength of the fingerprint identification area can be considered simultaneously when the setting position and the setting density of the first supporting structure of the fingerprint identification area are designed, and the overall mechanical performance of the display panel is ensured.
Optionally, the number of the first supporting structures in the unit area of the fingerprint identification area is m, and the number of the second supporting structures in the unit area of the non-fingerprint identification area is n; wherein the ratio of n to m is greater than 1 and less than or equal to 6. With continued reference to fig. 9, it is schematically shown that the areas corresponding to the 8 light emitting regions AA1 and the non-light emitting region AA2 surrounding the light emitting region AA1 in the figure are unit areas, and then the number of the first support structures 1031 in the unit area of the fingerprint identification region Z is 6, and the number of the second support structures 1032 in the unit area of the non-fingerprint identification region FZ is 10, and 10/6 is 5/3, which is between 1 and 6. In display panel, the number that sets up first bearing structure in the unit area in fingerprint identification district is less than the number that sets up the second bearing structure in the unit area in non-fingerprint identification district, can reduce the area ratio in the first bearing structure place region in the printing opacity district in the fingerprint identification district, increase partial fingerprint identification light penetration rate, improve the fingerprint identification precision, but the number that sets up first bearing structure in the unit area in the fingerprint identification district, the mechanical strength in fingerprint identification district can be reduced, and then influence display panel wholeness ability reliability, it is greater than 1 to set up n and m ratio in this embodiment, and less than or equal to 6, can improve the fingerprint identification precision when guaranteeing display panel mechanical properties reliability.
Optionally, in the display panel provided in the embodiment of the present invention, the number of the first support structures arranged in the unit area of the fingerprint identification area is smaller than that of the non-finger structuresAnd the number of the second supporting structures is set in the unit area of the pattern recognition area. The orthographic projection of the first supporting structure on the substrate layer is a first projection, and the area of the first projection is S1; the orthographic projection of the second support structure on the substrate layer is a third projection, and the area of the third projection is S3; the number of the first supporting structures in the fingerprint identification area is q1, and the number of the second supporting structures in the non-fingerprint identification area is q 2; the ratio of the sum of the areas of all the first projections to the number of first support structures in the fingerprint identification area is x1, i.e. the ratio
The ratio of the sum of the areas of all third projections to the number of second support structures in the non-fingerprint identification region is y1, i.e. the ratio
Wherein x1 is y 1.
In this embodiment, x1 represents the average value of the first projected area, y1 represents the average value of the third projected area, and the sizes of the support structures provided in the display panel may be different, and both the fingerprint recognition area and the non-fingerprint recognition area are the same, so that the average value is used to measure the size relationship between the single first projected area and the single second projected area. x1 is y1, the size that is equivalent to average single first bearing structure equals the size of average single second bearing structure, fingerprint identification district is the same with the size that sets up bearing structure in non-fingerprint identification district in display panel, the density that sets up first bearing structure in fingerprint identification district is less than the density that sets up second bearing structure in non-fingerprint identification district, reduce the area ratio in the first bearing structure place region in the light-permeable district in fingerprint identification district, increase partial fingerprint identification light penetration rate, and then can increase the fingerprint identification light quantity that light sense device received, improve the fingerprint identification precision, in practice can consider the mechanical strength in fingerprint identification district when setting up the position and setting up density to the first bearing structure in fingerprint identification district and setting up, guarantee the holistic mechanical properties of display panel.
The display panel provided by the invention can realize the light sensation fingerprint identification function, a light source is needed in the fingerprint identification stage, optionally, the light emitting device of the display layer of the fingerprint identification area can be used as a fingerprint identification light source, and in the fingerprint identification stage, light rays emitted by the light emitting device reach the touch main body, are reflected by the touch main body, penetrate through the display layer and the array layer, and irradiate on the light sensation device, so that fingerprint detection is realized. Optionally, a light source for fingerprint recognition may be separately disposed in the display panel.
Fig. 10 is a schematic view of a film structure of another alternative embodiment of the display panel according to the embodiment of the present invention, as shown in fig. 10, the display panel further includes a fingerprint identification light source 105, and fig. 10 shows a film structure diagram in a fingerprint identification area Z, where the fingerprint identification light source 105 is located on a side of the light sensing device 104 away from the array layer 101. The specific meanings of the reference numerals in fig. 10 can be explained with reference to the corresponding embodiment in fig. 2. In the fingerprint identification stage, the fingerprint identification light source 105 emits light to irradiate the touch subject W, and the light is reflected by the touch subject W, penetrates through the display layer 102 and the array layer 101, and then reaches the light sensing device 104, so that fingerprint detection is realized.
Fig. 11 is a schematic view of a display device according to an embodiment of the present invention, and the display device includes any one of the display panels 100 according to the embodiment 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 provided by the invention, the display area comprises the fingerprint identification area, the relative position relation between the metal wire in the non-luminous area of the fingerprint identification area and the first support structure is designed, so that the overlapping area of the first projection and the second projection is not less than 80% of the first projection area, when the first projection and the second projection are not overlapped completely, part of fingerprint identification light needs to penetrate through the first support structure to reach the light sensing device, and the more the overlapping area of the first projection and the second projection is, the smaller the area occupation ratio of the area where the first support structure is located in the light-permeable area is. And then can increase the fingerprint identification light volume that light sense device received, improve fingerprint identification precision.
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 (10)
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 substrate layer and a plurality of metal wires positioned in the non-light-emitting area;
a display layer located over the array layer, the display layer comprising:
a plurality of light emitting devices including an anode, a light emitting layer, and a cathode, wherein one of the light emitting regions includes one of the light emitting devices;
a plurality of support structures located between two adjacent light emitting devices and located in the non-light emitting region;
the display panel further comprises a fingerprint identification area positioned in the display area, the fingerprint identification area comprises a plurality of light sensing devices, and the light sensing devices are positioned on one side, far away from the display layer, of the array layer;
the supporting structures comprise a first supporting structure, the first supporting structure is located in the fingerprint identification area, an orthographic projection of the first supporting structure on the substrate layer is a first projection, an orthographic projection of the metal wire on the substrate layer is a second projection, and an overlapping area of the first projection and the second projection is not less than 80% of an area of the first projection;
the display area further comprises a non-fingerprint identification area, the supporting structure further comprises a second supporting structure, and the number of the second supporting structures in the unit area of the non-fingerprint identification area is less than or equal to the number of the first supporting structures in the unit area of the fingerprint identification area;
an orthographic projection of the second support structure on the substrate layer is a third projection; when the number of the second supporting structures in the unit area of the non-fingerprint identification area is equal to the number of the first supporting structures in the unit area of the fingerprint identification area, the ratio of the sum of the areas of all the first projections to the area of the non-light emitting area in the fingerprint identification area is x; in the non-fingerprint identification area, the ratio of the sum of the areas of all the third projections to the area of the non-luminous area is y, wherein x is less than or equal to y.
2. The display panel according to claim 1,
the support structure within the fingerprint identification region includes only the first support structure.
3. The display panel according to claim 1,
in the fingerprint identification area, the first projection is located within the second projection.
4. The display panel according to claim 1,
the fingerprint identification area is provided with a plurality of first supporting structures with different projection areas.
5. The display panel according to claim 1,
the metal line includes: scan lines, data lines, reference voltage lines, or control signal lines.
6. The display panel according to claim 5,
an extending direction of the first support structure parallel to the substrate layer is the same as an extending direction of at least one of the scan line, the data line, the reference voltage line, or the control signal line.
7. The display panel according to claim 1,
an orthographic projection of the second support structure on the substrate layer is a third projection;
when the number of the first supporting structures in the unit area of the fingerprint identification area is smaller than the number of the second supporting structures in the unit area of the non-fingerprint identification area, the ratio of the sum of the areas of all the first projections to the number of the first supporting structures in the fingerprint identification area is x 1; and in the non-fingerprint identification area, the ratio of the sum of the areas of all the third projections to the number of the second support structures is y1, wherein x1 is y 1.
8. The display panel according to claim 1,
the number of the first supporting structures in a unit area of the fingerprint identification area is m, and the number of the second supporting structures in a unit area of the non-fingerprint identification area is n; wherein the content of the first and second substances,
the ratio of n to m is greater than 1 and less than or equal to 6.
9. The display panel according to claim 1,
the display panel further comprises a fingerprint recognition light source,
in the fingerprint identification area, the fingerprint identification light source is positioned on one side of the light sensing device, which is far away from the array layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
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| CN109409346A (en) * | 2018-12-20 | 2019-03-01 | 苏州多感科技有限公司 | A kind of fingerprint recognition mould group and preparation method thereof, electronic equipment |
| CN109886140B (en) * | 2019-01-28 | 2021-05-14 | 上海天马有机发光显示技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN113261106B (en) * | 2019-11-28 | 2022-11-25 | 京东方科技集团股份有限公司 | Display substrate and display device |
| CN113380960B (en) * | 2021-05-24 | 2022-11-25 | 武汉天马微电子有限公司 | Display panel and display device |
| WO2024092483A1 (en) * | 2022-11-01 | 2024-05-10 | 京东方科技集团股份有限公司 | Light-emitting substrate, light-emitting device, and lighting device |
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| CN107133613A (en) * | 2017-06-06 | 2017-09-05 | 上海天马微电子有限公司 | A kind of display panel and display device |
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| CN107121820A (en) * | 2017-07-03 | 2017-09-01 | 厦门天马微电子有限公司 | A kind of liquid crystal display panel and display device |
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Effective date of registration: 20211020 Address after: No.8, liufangyuanheng Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province, 430074 Patentee after: WUHAN TIANMA MICROELECTRONICS Co.,Ltd. Address before: Room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai, 201201 Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |
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