Display panel and display device thereof

Abstract

An embodiment of the present invention provides a display panel and a display device thereof, relating to the field of display technology, and used to implement a full-screen fingerprint recognition function. The display panel includes: a display area; a plurality of pixel units, the plurality of pixel units are evenly distributed in the display area, the pixel units include a pixel opening area and a shielding area; at least one fingerprint recognition unit, the fingerprint recognition unit is distributed in the display area, and is used to implement fingerprint recognition in the entire display area; wherein the fingerprint recognition unit includes a fingerprint drive electrode and a fingerprint sensing electrode, wherein the fingerprint drive electrodes are electrically connected by a first cross-bridge lead, and the fingerprint sensing electrodes are electrically connected by a second lead. The above-mentioned display panel is suitable for use in a display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device thereof. Background Art

[0002] With the advancement of storage technology, terminal devices such as smartphones and tablets store large amounts of personal information and other important data, making their security even more critical. Currently, passwords and graphics are often used to protect these devices. However, these often require increased complexity, making them more difficult for users to remember and creating a conflict between security and ease of use.

[0003] Fingerprints, consisting of the uneven lines on the surface of the finger, are unique to the human body and their complexity provides sufficient features for identification. Fingerprint recognition utilizes the uniqueness and stability of fingerprints to identify individuals without requiring user memory.

[0004] Currently, fingerprint recognition can be achieved by setting a fingerprint recognition area on the display panel. However, the fingerprint recognition area is a fixed area, and the fingerprint recognition function can only be achieved when the finger touches the fixed area.

[0005] How to realize fingerprint recognition function at any position of the display screen is a major problem that needs to be solved urgently in this field. Summary of the Invention

[0006] In view of this, an embodiment of the present invention provides a display panel and a display device thereof, which are used to implement a full-screen fingerprint recognition function.

[0007] In a first aspect, the present invention provides a display panel, comprising:

[0008] Display area;

[0009] A plurality of pixel units, wherein the plurality of pixel units are evenly distributed in the display area, and the pixel units include a pixel opening area and a shielding area;

[0010] at least one fingerprint recognition unit, wherein the fingerprint recognition unit is a metal grid distributed in the display area and configured to realize fingerprint recognition in the entire display area;

[0011] The fingerprint recognition unit includes a fingerprint driving electrode and a fingerprint sensing electrode, wherein the fingerprint driving electrodes are electrically connected through a first bridge lead, and the fingerprint sensing electrodes are electrically connected through a second lead.

[0012] Optionally, the fingerprint recognition units are distributed in the shielding area, and the first bridge leads are arranged in the shielding area of ​​the corresponding pixel units.

[0013] Optionally, the fingerprint driving electrode and the fingerprint sensing electrode are provided in the same layer;

[0014] Furthermore, the second lead is provided on the same layer as the fingerprint sensing electrode.

[0015] Optionally, the display panel further includes:

[0016] At least one touch unit, the touch unit is arranged in the shielding area, and the touch unit includes a touch driving electrode and a touch sensing electrode,

[0017] The touch driving electrodes are electrically connected to each other via a third bridge lead, and the touch sensing electrodes are electrically connected to each other via a fourth lead.

[0018] Optionally, the touch driving electrodes and the touch sensing electrodes are arranged in the same layer;

[0019] Furthermore, the fourth lead is provided on the same layer as the touch sensing electrode.

[0020] Optionally, the third bridge lead is provided in the same layer as the fingerprint drive electrode, and the orthographic projection of the third bridge lead on the display panel does not overlap with the orthographic projection of the fingerprint drive electrode on the display panel.

[0021] Optionally, the first bridge lead and the touch drive electrode are provided in the same layer, and an orthographic projection of the first bridge lead on the display panel does not overlap with an orthographic projection of the touch drive electrode on the display panel.

[0022] Optionally, the fingerprint recognition unit is a metal grid.

[0023] Optionally, the display panel is an organic light emitting display panel.

[0024] In a second aspect, the present invention provides a display device, comprising the display panel according to the first aspect.

[0025] The beneficial effects of the above aspects and any possible implementation are as follows:

[0026] In this solution, since the fingerprint recognition unit is a metal grid structure and can be distributed within the display area of ​​the display panel, when a finger touches the display area, the fingerprint can be recognized and the corresponding command can be completed. In other words, fingerprint touch can be achieved regardless of where the finger touches the display area. Compared with the existing technology that sets the fingerprint recognition area in the non-display area, this embodiment can increase the display area of ​​the display area and achieve full-screen display. Compared with the existing technology that sets the fingerprint recognition area at a fixed position in the display area, in this embodiment, since the fingerprint recognition unit is set in the display area of ​​the display panel, that is, the entire display area can be understood as the fingerprint recognition area, the fingerprint can be recognized by touching any position of the display area. Therefore, this solution can achieve full-screen fingerprint recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 A schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0029] Figure 2 Another structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0030] Figure 3 Another structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0031] Figure 4 A schematic diagram of the principle of a fingerprint recognition unit provided by an embodiment of the present invention;

[0032] Figure 5 The embodiment of the present invention provides Figure 3 Cross-sectional view at the AA' position;

[0033] Figure 6 Another structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0034] Figure 7 Another structural schematic diagram of a display panel provided by an embodiment of the present invention;

[0035] Figure 8 The embodiment of the present invention provides Figure 7 Cross-section at the middle BB' position;

[0036] Figure 9 The embodiment of the present invention provides Figure 7 Cross-section at the CC' position;

[0037] Figure 10 The embodiment of the present invention provides Figure 7 Cross-section at the DD' position;

[0038] Figure 11 A schematic structural diagram of an organic light emitting display panel provided by an embodiment of the present invention;

[0039] Figure 12 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "an", "the" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0042] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0043] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of the present invention are described from the perspectives shown in the accompanying drawings and should not be construed as limiting the embodiments of the present invention. Furthermore, in the context, it should be understood that when an element is referred to as being formed "on" or "under" another element, it can be formed not only directly "on" or "under" the other element, but also indirectly "on" or "under" the other element through an intermediate element.

[0044] The present invention provides a display panel, such as Figure 1 , which is a schematic structural diagram of a display panel provided by an embodiment of the present invention. The display panel 100 includes a display area 10 and a non-display area 20 , and the non-display area 20 is arranged around the display area 10 .

[0045] Continue to participate Figure 1 The display panel 100 also includes a plurality of pixel units 11, and the plurality of pixel units 11 are arranged in the display area 10. The pixel unit 11 includes a pixel opening area 111 and a blocking area 113. It can be understood that the pixel opening area 111 can be understood as the opening area of ​​the pixel unit 11. The opening area of ​​the pixel unit 11 refers to the area excluding the pixel wiring and the area excluding the pixel being blocked, that is, the effective light transmission or light emission area of ​​the pixel unit 11. The ratio of the opening area of ​​the pixel unit 11 to the area occupied by the pixel unit as a whole is called the aperture ratio, that is, the ratio of the area of ​​the effective light transmission or light emission area of ​​the pixel unit to the total area occupied by the pixel unit. The blocking area 113 can be understood as the area excluding the pixel opening area 111, which can be used to place the relevant wiring of the pixel unit.

[0046] See also Figure 2 , Figure 2 This is another structural diagram of a display panel provided by an embodiment of the present invention, including at least one fingerprint recognition unit 12 distributed within the display area 10 , and configured to implement fingerprint recognition within the entire display area 10 .

[0047] Continue to see Figure 2 and Figure 3 The fingerprint recognition unit 12 includes a fingerprint drive electrode 121 and a fingerprint sensing electrode 123. The fingerprint drive electrodes 121 are electrically connected via a first bridge lead 21, and the fingerprint sensing electrodes 123 are electrically connected via a second lead 23. It is understood that the fingerprint recognition unit 12 can be understood as a mutual capacitance fingerprint electrode 120.

[0048] It should be noted that, in this embodiment, since the fingerprint recognition unit 12 avoids the pixel opening area 111 of the pixel unit 11, it can be understood that the fingerprint recognition unit 12 in this embodiment is set in the shielding area 113, so it will not affect the normal display of the display panel 100. For example, Figure 2 The fingerprint drive electrode 121 and fingerprint sensing electrode 123 are both shown to be diamond-shaped. In fact, this embodiment does not specifically limit the shape of the fingerprint recognition unit 12, as long as it is distributed throughout the display area 10. Furthermore, in this embodiment, multiple fingerprint units can be provided in the display area. This embodiment does not specifically limit the specific number of fingerprint units, which can be determined based on different products.

[0049] In one embodiment, Figure 3 As shown, Figure 3This is another structural schematic diagram of the display panel provided in an embodiment of the present invention. The fingerprint recognition unit 12 is a metal grid, and the metal grid is distributed in the display area 10. It can be understood that the fingerprint recognition unit 12 has a grid appearance, wherein the material of the fingerprint drive electrode 121 and the fingerprint sensing electrode 123 includes metal. In other words, the fingerprint drive electrode 121 made of metal and the fingerprint sensing electrode 123 made of metal form a grid structure with each other. The fingerprint recognition unit 12 made of metal has good electrical conductivity, which is conducive to signal transmission; and the fingerprint recognition unit 12 with a metal grid structure can set the pixel opening area 111 in the gaps between the grids, so the above structure can take into account both signal transmission and pixel opening rate.

[0050] It should be added that the fingerprint recognition unit 12 of the metal grid structure is set in the shielding area (not shown in the figure) outside the pixel opening area 111 of the pixel unit 11. Since the pixel opening area 111 is not blocked, it does not affect the normal display of the pixel unit 11. It is understandable that the area outside the pixel opening area 111 can be regarded as the shielding area. Therefore, in order to clearly show the relationship between the fingerprint drive electrode 121, the fingerprint sensing electrode 123, the first cross-bridge lead 21 and the second lead 23, the shielding area is not included in the figure. Figure 3 Shown in.

[0051] Taking a mobile phone as an example, the following briefly introduces the usage process and principle of the fingerprint recognition unit (mutual capacitance fingerprint electrode):

[0052] like Figure 4 As shown, it is a schematic diagram of the principle of the fingerprint recognition unit provided by an embodiment of the present invention. When fingerprint recognition is required, such as fingerprint unlocking, the finger can be placed in the display area 10 of the display panel 100. At this time, the fingerprint driving electrode 121 and the fingerprint sensing electrode 123 form a coupling capacitor, and the fingerprint sensing electrode 123 transmits the sensed electrical signal to the fingerprint driving end (which can be a driver chip for example). Figure 4 The fingerprint driver terminal processes the received induced electrical signal and unlocks the screen when it recognizes the recorded fingerprint. Of course, it is understandable that the fingerprint driver electrode 121 is electrically connected to the fingerprint driver terminal to receive the electrical signal, and the fingerprint sensing electrode 123 is also electrically connected to the fingerprint driver terminal to transmit the induced electrical signal to the fingerprint driver terminal.

[0053] In the prior art, there are two ways to implement fingerprint recognition:

[0054] The first method involves setting up a fingerprint recognition area within the non-display area. When fingerprint unlocking is required, simply touch your finger within the fingerprint recognition area to detect the fingerprint and unlock the device. However, this method increases the non-display area. In a display panel of a given size, the increased non-display area inevitably reduces the display area, hindering full-screen display.

[0055] The second method uses a portion of the display area of ​​the display panel as a fixed fingerprint recognition area. A finger can only touch this fixed fingerprint recognition area to recognize the fingerprint and realize fingerprint unlocking and other functions. Although this method increases the display panel display area, the fixed fingerprint recognition area is not conducive to full-screen operation. For example, when operating the screen with one hand, it is difficult to realize this function due to the certain distance between the fingerprint recognition area and the phone.

[0056] However, in this embodiment, since the fingerprint recognition unit can be distributed throughout the display area 10 of the display panel 100, when a finger touches the display area, the fingerprint can be recognized and the corresponding command can be completed. In other words, fingerprint touch can be achieved regardless of where the finger touches the display area 10. Compared to the prior art that sets the fingerprint recognition area in the non-display area, this embodiment can increase the display area of ​​the display area and achieve full-screen display. Compared to the prior art that sets the fingerprint recognition area at a fixed position in the display area, in this embodiment, since the fingerprint recognition unit 12 is set in the display area 10 of the display panel 100, that is, the entire display area 10 can be understood as the fingerprint recognition area, the fingerprint can be recognized by touching any position of the display area 10, so this solution can achieve full-screen fingerprint recognition.

[0057] In one embodiment, see Figure 2 and Figure 3 The fingerprint driving electrode 121 and the fingerprint sensing electrode 123 can be provided on the same layer. This can reduce the preparation steps, improve the preparation efficiency, and save the preparation cost.

[0058] It should be added that, in combination with the above embodiments, the fingerprint driving electrode 121, the fingerprint sensing electrode 123 and the second lead 23 are arranged in the same film layer. During the preparation process, the film thickness is reduced, the preparation process is reduced, and the cost is reduced.

[0059] For example, in another embodiment, the second lead may be disposed in other film layers except the first bridge lead. The specific arrangement may depend on the specific product.

[0060] Also, see Figure 2 and Figure 3In this embodiment, the second lead 23 can be provided on the same layer as the fingerprint sensing electrode 123. It is understood that the two can be formed using the same process. This allows the second lead 23 and the fingerprint sensing electrode 123 to be prepared together, reducing the number of preparation steps and saving preparation costs. Of course, the first bridge lead 21 is not necessarily provided on the same layer as the second lead 23, so the fingerprint sensing electrode 123 and the fingerprint driving electrode 121 will not be short-circuited.

[0061] It should be noted that the material of the first bridge lead 21 can be the same as that of the fingerprint sensing electrode 123, exemplarily a metal material, or different from that of the fingerprint sensing electrode 123, exemplarily a material such as indium zinc oxide. In this embodiment, there is no particular limitation on its material, as long as it can electrically connect two adjacent fingerprint drive electrodes 121.

[0062] In one embodiment, see Figure 3 The fingerprint recognition unit 12 is located in the shielding area (not shown in the figure), that is, the fingerprint sensing electrode 123 and the fingerprint driving electrode 121 included in the fingerprint recognition unit 12 are both located in the shielding area; and the first cross-bridge lead 21 is located in the shielding area of ​​the corresponding pixel unit 11. In this embodiment, the fingerprint recognition unit 12 and the first cross-bridge lead 21 are located outside the pixel opening area 111, that is, they are located in the shielding area of ​​the pixel unit and do not occupy the pixel opening area 111 of the pixel unit. On the one hand, the number of pixel opening areas of the entire display panel 100 can be increased, and on the other hand, the normal display of the display panel 100 will not be affected, especially the local display will not be affected.

[0063] It should be noted that, as an example, Figure 2 and Figure 3 The fingerprint driving electrodes and fingerprint sensing electrodes shown are both diamond-shaped structures, but in fact, in this embodiment, there is no particular limitation on their specific number and shape, which can be determined according to the specific product.

[0064] In order to clearly show the structure of the fingerprint recognition unit, the following is a brief introduction to its film structure:

[0065] like Figure 5 As shown, it is provided by the embodiment of the present invention Figure 3The cross-sectional view at the AA' position in the middle is used to prepare the fingerprint recognition unit 12, that is, the fingerprint drive electrode 121 and the fingerprint sensing electrode 123 included in the fingerprint recognition unit 12, and the second lead 23 electrically connected to the fingerprint sensing electrode 123, thereby completing the preparation of this layer. Prepare the insulating layer 14, which can be an organic film layer. In the process of preparing the insulating layer 14, a via area 141 can be reserved. The via area 141 is for electrically connecting the first cross-bridge lead 21 with the fingerprint drive electrode 121 provided on other film layers. The insulating layer 14 can also isolate the first cross-bridge lead 21 and the fingerprint recognition unit 12 to prevent short circuit and damage to the device. Prepare the first cross-bridge lead 21, and electrically connect the first cross-bridge lead 21 to the fingerprint drive electrode 121 through the via area 141. It should be noted that the positive projections of the fingerprint drive electrode 121 and the fingerprint sensing electrode 123 included in the fingerprint recognition unit 12 on the display panel 100 are both located in the shielding area, so they will not affect the normal display of the pixel unit. Of course, after the preparation is completed, a protective layer (not shown in the figure) can be prepared to better protect the above structure.

[0066] In one embodiment, Figure 6 , which is another structural schematic diagram of a display panel provided by an embodiment of the present invention. The display panel 100 further includes at least one touch unit 13, which is disposed in a shielding area (not shown in the figure). The touch unit 130 includes touch drive electrodes 135 and touch sensing electrodes 137. The touch drive electrodes 135 are electrically connected to each other via third bridge leads 35, and the touch sensing electrodes 137 are electrically connected to each other via fourth leads 37. It is understood that the touch unit 13 can be understood as a mutual capacitance touch electrode 130.

[0067] It should be noted that the orthographic projections of the touch driving electrodes 135 and the touch sensing electrodes 137 on the display panel are both located within the shielding area, and therefore do not affect the normal display of the pixel unit. Figure 6 The touch sensing electrodes and touch driving electrodes shown are both rectangular. However, in fact, this embodiment does not particularly limit the shape and number of the touch driving electrodes and touch sensing electrodes, and their specific shapes may be determined according to specific products.

[0068] In order for those skilled in the art to better understand this embodiment, the working principle of the touch unit 13 is briefly introduced below: when a finger touches the display panel, a coupling capacitor is formed between the touch driving electrode and the touch sensing electrode. The touch sensing electrode transmits the coupling capacitor to the touch driving end, which can be a partial port of the driving chip. The driving chip receives and processes the electrical signal to determine the touch position.

[0069] For further information, see Figure 6The touch driving electrodes 135 and the touch sensing electrodes 137 are arranged on the same layer. This arrangement can reduce the number of film layers, making the display panel thinner and lighter.

[0070] Furthermore, in this embodiment, the fourth leads 37 are disposed on the same layer as the touch sensing electrodes 137. It is understood that both can be formed using the same process. In conjunction with the above embodiments, the touch driving electrodes 135 and the touch sensing electrodes 137 are disposed on the same layer. In this case, the fourth leads 37 and the touch sensing electrodes 137 are also disposed on the same layer. In other words, all three are located in the same film layer. This further reduces the film thickness, reduces the number of process steps, and saves manufacturing costs.

[0071] For example, in another embodiment, the fourth lead may be disposed in other film layers except the third bridge lead. The specific arrangement may depend on the specific product.

[0072] In one embodiment, Figure 7 、 Figure 8 and Figure 9 As shown, Figure 7 Another structural diagram of a display panel provided by an embodiment of the present invention is shown in FIG. Figure 8 The embodiment of the present invention provides Figure 7 Cross-sectional view at the BB' position, Figure 9 The embodiment of the present invention provides Figure 7 Cross-sectional view at CC' position, Figure 10 The embodiment of the present invention provides Figure 7 The cross-sectional view at the DD' position in the middle, since the touch unit and the fingerprint recognition unit are located in different film layers, in order to clearly understand the relationship between the two, the touch unit is set to be semi-transparent. Figure 7 and Figure 8 As shown, the third bridge lead 35 is arranged on the same layer as the fingerprint drive electrode 121, and the orthographic projection of the third bridge lead 35 on the display panel 100 does not overlap with the orthographic projection of the fingerprint drive electrode 121 on the display panel. In combination with the above embodiment, it can be seen that the fingerprint drive electrode 121 is arranged on the same layer as the fingerprint sensing electrode 123 and the second lead 23. At this time, it should be emphasized that when the third bridge lead 35 is arranged on the same layer as the fingerprint drive electrode 121, the third bridge lead 35 cannot overlap with the fingerprint sensing electrode 123 and the second lead 23. In other words, the orthographic projection of the third bridge lead 35 on the display panel does not overlap with the orthographic projection of the fingerprint sensing electrode 123 on the display panel, and does not overlap with the orthographic projection of the second lead 23 on the display panel. In this way, it is possible to ensure that adjacent traces (fingerprint sensing electrode, fingerprint drive electrode, touch drive electrode, touch sensing electrode) are not short-circuited, ensuring the normal use of the device.

[0073] In one embodiment, Figure 7and Figure 9 As shown, the first bridge lead 21 is arranged on the same layer as the touch drive electrode 135, and the orthographic projection of the first bridge lead 21 on the display panel does not overlap with the orthographic projection of the touch drive electrode 135 on the display panel. In combination with the above embodiment, it can be seen that the touch drive electrode 135 is arranged on the same layer as the touch sensing electrode 137 and the fourth lead 37. At this time, it should be emphasized that when the first bridge lead 21 is arranged on the same layer as the touch drive electrode 135, the first bridge lead 21 cannot overlap with the touch sensing electrode 137 and the fourth lead 37. In other words, the orthographic projection of the first bridge lead 21 on the display panel does not overlap with the touch sensing electrode 137, nor does it overlap with the orthographic projection of the fourth lead on the display panel. This ensures that adjacent traces (fingerprint sensing electrode, fingerprint drive electrode, touch drive electrode, touch sensing electrode) are not short-circuited, ensuring normal use of the device.

[0074] In one embodiment, the area covered by the fingerprint recognition unit in the display area is a first coverage area, denoted by A; the area covered by the multiple touch units in the display area is a second coverage area, denoted by B. The first coverage area A is not greater than the second coverage area B, i.e., A ≤ B. In this embodiment, to achieve higher touch sensitivity, the second coverage area B accounts for a higher proportion of the display area. In this case, when the first coverage area A is not less than the second coverage area B, it indicates that the first coverage area A also accounts for a higher proportion of the display area, thereby meeting the requirements for full-screen fingerprint recognition. Furthermore, due to the larger display area coverage of the display panel, the accuracy of fingerprint recognition is further improved.

[0075] It should be noted that since the fingerprint recognition unit and the touch control unit are located in the same film layer, the first coverage area can be the same as the display area, and the second coverage area can also be the same as the display area. In fact, the area ratio of the two can be determined according to the specific product.

[0076] Combining the above embodiments, it can be seen that Figure 7 and Figure 10 As shown, this embodiment can complete the preparation of the fingerprint recognition unit and the touch unit through a three-layer structure of the fingerprint film layer, the insulating film layer 14 and the touch film layer, effectively reducing the thickness of the display panel. On the basis of realizing full-screen fingerprint recognition, it is conducive to the preparation of a thin and light display panel.

[0077] It is understood that the fingerprint film layer can be understood as a film layer provided with fingerprint driving electrodes and fingerprint sensing electrodes, and the touch film layer can be understood as a film layer provided with touch driving electrodes and touch sensing electrodes.

[0078] Furthermore, it should be noted that the above Figures 8 to 10Although the fingerprint film layer is at the bottom and the touch film layer is at the top, in fact, the touch film layer can be prepared first and then the fingerprint film layer. In this embodiment, there is no special limitation on the order of preparing the film layers, which can be determined according to the specific product.

[0079] In one embodiment, the display panel 100 may be an organic light emitting display panel. For an organic light emitting display panel, for example, an on-cell method is used to implement a touch function. Figure 11 As shown, it is a schematic structural diagram of the organic light-emitting display panel provided by an embodiment of the present invention. The organic light-emitting display panel includes a first substrate 41 and a thin film encapsulation layer 42 arranged opposite to each other, and a thin film transistor 5, a light-emitting element 6 and a pixel defining layer 7 are arranged between the first substrate 41 and the thin film encapsulation layer 42. The thin film transistor 5 specifically includes an active layer 51, a gate 52, a source 53 and a drain 54, and the light-emitting element 6 specifically includes an anode 61, a light-emitting layer 62 and a cathode 63. Among them, the light-emitting layer 62 of the light-emitting element 6 corresponds to the opening area 111 of the pixel unit, and the pixel defining layer 7 defines the shielding area of ​​the pixel unit. A second electrode block 22 is provided on the side of the thin film encapsulation layer 42 facing away from the first substrate 41. The orthographic projection of the second electrode block 22 on the plane where the organic light-emitting display panel is located is located within the orthographic projection of the pixel defining layer 7 on the plane where the organic light-emitting display panel is located. It should be noted that the touch unit (not shown in the figure) and the fingerprint recognition unit (not shown in the figure) in this embodiment have their orthographic projections on the plane where the pixel defining layer 7 of the organic light-emitting display panel is located located within the pixel defining layer 7, and therefore will not block the opening area 111 of the pixel, and will not block the light emitted by the light-emitting layer.

[0080] This embodiment provides a display device such as Figure 12 As shown in FIG, it is a structural diagram of a display device provided by an embodiment of the present invention. The display device 500 includes the display panel 100 involved in this embodiment. It should be noted that, Figure 12 A mobile phone is used as an example of a mobile terminal, but the mobile terminal is not limited to a mobile phone. Specifically, the mobile terminal may include but is not limited to a personal computer (PC), a personal digital assistant (PDA), a wireless handheld device, a tablet computer (Tablet Computer), an MP4 player or a television, and any other electronic device with a display function.

[0081] In this embodiment, the display device 500 includes the aforementioned display panel 100. Therefore, when the fingerprint recognition unit is disposed within the display area of ​​the display panel, the fingerprint can be recognized and the corresponding instruction completed when a finger touches the display area. In other words, the fingerprint can be recognized regardless of where the finger touches the display area. Compared to the prior art that sets a fingerprint recognition area in a non-display area, this embodiment can increase the display area of ​​the display area, achieving full-screen display. Compared to the prior art that sets a fingerprint recognition area at a fixed position in the display area, in this embodiment, since the fingerprint recognition unit is disposed within the display area of ​​the display panel, the fingerprint can be recognized by touching any position of the display area. Therefore, this solution can achieve full-screen fingerprint recognition.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: Display area; A plurality of pixel units, wherein the plurality of pixel units are evenly distributed in the display area, and the pixel units include a pixel opening area and a shielding area; at least one fingerprint recognition unit, the fingerprint recognition unit being distributed in the display area and configured to perform fingerprint recognition in the entire display area, the area of ​​the display area covered by the fingerprint recognition unit being a first coverage area, the first coverage area being the same as the display area; The fingerprint recognition unit includes a fingerprint driving electrode and a fingerprint sensing electrode, wherein the fingerprint driving electrodes are electrically connected through a first bridge lead, and the fingerprint sensing electrodes are electrically connected through a second lead; The fingerprint driving electrode and the fingerprint sensing electrode are arranged on the same layer, and the second lead is arranged on the same layer as the fingerprint sensing electrode; at least one touch unit, the touch unit being disposed within the shielding area, the touch unit comprising touch drive electrodes and touch sensing electrodes, wherein the touch drive electrodes are electrically connected via third bridge leads, and the touch sensing electrodes are electrically connected via fourth leads, and an area of ​​the display area covered by the touch unit is a second coverage area, which is also the same as the display area; The touch driving electrodes and the touch sensing electrodes are arranged on the same layer, and the fourth leads and the touch sensing electrodes are arranged on the same layer; The third bridge lead is provided on the same layer as the fingerprint drive electrode, and the orthographic projection of the third bridge lead on the display panel does not overlap with the orthographic projection of the fingerprint drive electrode on the display panel; The first bridge lead and the touch drive electrode are arranged in the same layer, and the orthographic projection of the first bridge lead on the display panel does not overlap with the orthographic projection of the touch drive electrode on the display panel.

2. The display panel according to claim 1, wherein: The fingerprint identification units are distributed in the shielding area, and the first bridge leads are arranged in the shielding area of ​​the corresponding pixel units.

3. The display panel according to claim 1, wherein: The fingerprint recognition unit is a metal grid.

4. The display panel according to any one of claims 1 to 3, wherein: The display panel is an organic light emitting display panel.

5. A display device, characterized in that: The display device includes the display panel according to any one of claims 1 to 4.

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