WO2022121002A1

WO2022121002A1 - Display panel and display device thereof

Info

Publication number: WO2022121002A1
Application number: PCT/CN2020/139879
Authority: WO
Inventors: 葛腾飞; 戴其兵
Original assignee: 武汉华星光电半导体显示技术有限公司
Priority date: 2020-12-07
Filing date: 2020-12-28
Publication date: 2022-06-16
Also published as: CN112578935A

Abstract

Disclosed are a display panel and a display device thereof. The display panel comprises a substrate, a driving circuit layer, a light-emitting functional layer, an encapsulation layer and a sensing layer. The display panel comprises a planar display area and a curved display area. By providing a fingerprint identification unit in a curved space of the sensing layer that is located on a lateral side of the display device, the thickness of the display device is reduced, and the screen-to-body ratio and portability of the display device are improved.

Description

Display panel and display device thereof

technical field

The present application relates to the field of display, and in particular, to a display panel and a display device thereof.

Background technique

Fingerprint recognition devices are widely used in the field of mobile phone security because of their high security.

technical problem

With the popularization of the full-screen concept, the screen ratio of mobile phones is getting larger and larger, and the fingerprint recognition device is either set under the screen or on the back of the display device, which requires additional space in the display device, which increases the thickness and thickness of the screen. Fingerprinting cost.

Therefore, the prior art has the problems that the fingerprint identification device is bulky, increases the thickness of the screen and the cost of fingerprint identification.

technical solutions

The embodiments of the present application provide a display panel and a display device thereof, which can effectively alleviate the problems in the prior art that the fingerprint identification device is bulky, the thickness of the screen is increased, and the cost of fingerprint identification is increased.

In order to solve the above problems, the technical solutions provided by this application are as follows:

The present application provides a display panel and a display device, the display panel includes:

substrate;

a driving circuit layer, formed on one side of the substrate;

a light-emitting functional layer, formed on the side of the driving circuit layer away from the substrate;

an encapsulation layer, formed on the side of the light-emitting functional layer away from the substrate;

an induction layer, formed on the side of the encapsulation layer away from the substrate;

The display panel further includes a flat display area and a curved display area located on both sides of the flat display area, and the sensing layer is provided with fingerprint recognition in the curved display area located on at least one side of the flat display area. A touch unit is arranged in the flat display area and the curved display area.

In some embodiments, the curved display area includes a first curved display area and a second curved display area, and the fingerprint identification unit includes a first fingerprint identification unit disposed in the first curved display area and a fingerprint identification unit disposed in the second curved display area The second fingerprint recognition unit of the area.

In some embodiments, the touch control unit includes a plurality of touch electrodes arranged in an array, the fingerprint identification unit includes a plurality of fingerprint identification electrodes arranged in an array, and the plurality of touch electrodes are associated with the plurality of touch electrodes. The fingerprint identification electrodes are arranged on the same layer.

In some embodiments, the display panel further includes a touch driving chip, and the touch driving chip is disposed on a side of the flat display area connected to the curved display area on both sides;

The touch electrodes include a plurality of rows of first touch electrodes arranged at intervals along a first direction and a plurality of rows of second touch electrodes arranged at intervals along a second direction, and the first direction is perpendicular to the second direction , the touch control unit further includes a plurality of first touch signal lines and second touch signal lines arranged at intervals, each row of the first touch electrodes is connected to the touch drive chip through a first touch signal line, each A row of second touch electrodes is connected to the touch driving chip through a second touch signal line;

The fingerprint identification electrodes include multiple rows of first fingerprint identification electrodes arranged at intervals along the first direction and multiple rows of second fingerprint identification electrodes arranged at intervals along the second direction, and the fingerprint identification unit further includes multiple rows of intervally arranged fingerprint identification electrodes. A first fingerprint identification signal line and a plurality of second fingerprint identification signal lines, each column of the first fingerprint identification electrode is connected to the touch driver chip through a first fingerprint identification signal line, and each column of the second fingerprint identification electrode is connected through a second fingerprint identification signal line. The fingerprint identification signal line is connected with the touch driving chip.

In some embodiments, the sensing layer includes:

the first insulating layer;

a second insulating layer, disposed on the first insulating layer;

The touch electrodes are arranged on a side of the first insulating layer away from the substrate, and are covered by the second insulating layer, and the first leads are arranged on the first insulating layer away from the second insulating layer. One side of the insulating layer may be disposed on the side of the second insulating layer away from the first insulating layer.

In some embodiments, the touch unit is provided with an accommodating area in the curved display area, the opening of the accommodating area faces the side of the curved display area away from the flat display area, the touch The control unit is arranged in the accommodating area and maintains a certain gap with the touch control unit.

In some embodiments, the first touch signal lines corresponding to at least one column of first touch electrodes intersecting with the accommodating area pass through the gap between the touch unit and the fingerprint recognition unit, and will be disposed in the same The two first touch electrodes in a row and located on opposite sides of the accommodating area are connected.

In some embodiments, at least one row of second touch electrodes located on a side of the accommodating area away from the touch driving chip and at least one row of second electrodes intersecting with the accommodating area correspond to second touch signals The line detours to the side of the curved display area away from the flat display area through the gap between the touch unit and the fingerprint identification unit, and extends to connect with the touch drive chip.

At the same time, the present application provides a display device, including a display panel, and the display panel includes:

substrate;

a driving circuit layer, formed on one side of the substrate;

The display panel further includes a flat display area and a curved display area located on both sides of the flat display area, and the sensing layer is provided with fingerprint recognition in the curved display area located on at least one side of the flat display area. The sensing layer is provided with a touch unit in the flat display area and the curved display area.

In some embodiments, the curved display area includes a first curved display area and a second curved display area, and the fingerprint identification unit includes a first fingerprint identification unit disposed in the first curved display area and a fingerprint identification unit disposed in the first curved display area. The second fingerprint identification unit in the second curved display area.

In some embodiments, the first touch signal line, the second touch signal line, the first fingerprint identification signal line and the second fingerprint identification signal line are all disposed on the same layer and overlapped , one of the first touch signal line and the second touch signal line is connected through a first lead set on a different film layer, and the first fingerprint identification signal line and the second fingerprint identification signal One of the wires is connected through a second lead provided on the same layer as the first lead.

In some embodiments, the sensing layer includes:

the first insulating layer;

a second insulating layer, disposed on the first insulating layer;

beneficial effect

Beneficial effects of the embodiments of the present disclosure: The present application discloses a display panel and a display device thereof. The display panel includes a stacked substrate, a driving circuit layer, a light-emitting functional layer, an encapsulation layer and a sensing layer, wherein the display panel includes The flat display area and the curved display areas located on both sides of the flat display area, the sensing layer is provided with a fingerprint identification unit in the curved display area located on at least one side of the flat display area, and a touch panel is provided in the flat display area and the curved display area. control unit. In the embodiment of the present application, by arranging a fingerprint identification unit in the curved display area on the side of the display device, the curved space on the side of the display device is utilized, the thickness of the display device is reduced, and the screen ratio and portability of the display device are improved.

Description of drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for disclosure. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic plan view of a display panel according to an embodiment of the present application.

FIG. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the present application.

FIG. 3 is a schematic side structure diagram of a sensing layer provided by an embodiment of the present application.

FIG. 4 is a schematic plan view of a sensing layer provided by an embodiment of the present application.

FIG. 5 is a schematic plan structure diagram of a fingerprint identification unit provided by an embodiment of the present application.

FIG. 6 is a schematic cross-sectional view of a sensing layer provided by an embodiment of the present application.

FIG. 7 is a schematic flowchart of the operation of the fingerprint identification unit provided by the embodiment of the present application.

Embodiments of the present invention

The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present disclosure may be practiced. The directional terms mentioned in this disclosure, such as [up], [down], [front], [rear], [left], [right], [inner], [outer], [side], etc., are only for reference Additional schema orientation. Accordingly, the directional terms used are used to describe and understand the present disclosure, rather than to limit the present disclosure. In the figures, structurally similar elements are denoted by the same reference numerals.

The present disclosure will be further described below in conjunction with the accompanying drawings and specific embodiments:

Specifically, referring to FIGS. 1 to 6 , an embodiment of the present application provides a display panel, the display panel includes a substrate; a driving circuit layer is formed on one side of the substrate; and a light-emitting functional layer is formed on the driver The circuit layer is on the side away from the substrate; the encapsulation layer is formed on the side of the light-emitting functional layer away from the substrate; the sensing layer is formed on the side of the encapsulation layer away from the substrate; wherein the display panel includes a flat display area and The curved display area located on both sides of the flat display area, the sensing layer is provided with a fingerprint recognition unit in the curved display area located on at least one side of the flat display area, and a fingerprint recognition unit is provided in the flat display area and the curved display area. There is a touch unit.

FIG. 1 is a schematic plan view of a display panel. As shown in FIG. 1 , the display panel includes a flat display area A1 , and a first curved display area A2 and a second curved display area A3 located on both sides of the flat display area A1 . In the curved display area, the touch layer is provided with a fingerprint identification unit.

In some embodiments, the fingerprint identification unit is disposed in at least one area of the first curved display area A2 and the second curved display area A3.

In some embodiments, the fingerprint identification unit includes a first fingerprint identification unit disposed in the first curved display area and a second fingerprint identification unit disposed in the second curved display area.

In some embodiments, the first fingerprint identification unit and the second fingerprint identification unit are symmetrical about the center line of the display module.

The present application discloses a display panel and a display device thereof. The display panel includes a stacked substrate, a driving circuit layer, a light-emitting function layer, an encapsulation layer and a sensing layer, wherein the display panel includes a flat display area and a curved display area located on both sides of the flat display area, and the sensing layer is located on the A fingerprint identification unit is arranged in the curved display area on at least one side of the flat display area, and a touch unit is arranged in the flat display area and the curved display area. In the embodiment of the present application, by arranging a fingerprint identification unit in the curved display area on the side of the display device, the curved space on the side of the display device is utilized, the thickness of the display device is reduced, and the screen ratio and portability of the display device are improved.

2 is a schematic cross-sectional view of a display panel. The display module is sequentially formed with a substrate 100, an optical adhesive layer 200, a driving circuit layer 300, a light-emitting functional layer 400, an encapsulation layer 500, and a sensing layer 600 from bottom to top. At least one fingerprint identification unit 700 is formed in the sensing layer 600 in the first curved display area A2 and the second curved display area A3 by patterning.

The substrate 100 is used to support the display panel, and the substrate 100 is usually a polyimide film with good insulation and heat resistance. The material of the optical adhesive layer 200 is an optical acrylic pressure-sensitive adhesive, which is a matrix-free material and has the advantages of high light transmittance, low dew, high adhesion, and UV resistance. Connected to the light-emitting functional layer 400 , the driving circuit layer 300 and the array substrate 400 include thin film transistors and a light-emitting functional layer, and the light-emitting functional layer includes an anode, a light-emitting material layer and a cathode. The encapsulation layer 500 is formed by evaporating an organic material layer and an inorganic material layer on the array substrate by chemical vapor method and atomic deposition method. The inorganic material layer prevents penetration, but the organic material layer is inserted due to uneven properties of the inorganic film. The sensing layer 600 is a touch capacitive panel, and the touch layer is connected to the anode and the cathode of the light-emitting functional layer 600 for transmitting electrical signals to control the light of the light-emitting functional layer.

In some embodiments, the sensing layer 600 is further attached with a second optical adhesive layer 800 . The material of the second optical adhesive layer 800 is an optical adhesive layer, which may be the same as or different from the material of the optical adhesive layer 200 . The polarizer 900 is connected to the touch layer 600 through the second optical adhesive layer for providing polarized light. In some embodiments, the display panel further includes a cover window, the cover window is glass for encapsulating the display panel, and the cover window is connected to the polarizer 900 through optical glue.

FIG. 3 is a schematic side view of the structure of the sensing layer 600 .

In some embodiments, the sensing layer 600 is formed with a fingerprint identification area in at least one of the first curved display area A2 and the second curved display area A3, and the fingerprint identification unit 700 is patterned in the fingerprint identification area. .

In some embodiments, the display module has only one fingerprint identification unit 700, and the fingerprint identification unit 700 is formed in at least one fingerprint identification area of the first curved display area A2 and the second curved display area A3.

In some embodiments, the fingerprint identification unit 700 includes a first fingerprint identification unit 710 and a second fingerprint identification unit 720, the first fingerprint identification unit 710 is disposed in the first curved display area A2, and the second fingerprint identification unit 710 The unit is arranged in the second curved display area A3, and the first fingerprint identification unit 710 and the second fingerprint identification unit 720 are symmetrical with respect to the center line of the display module.

FIG. 4 is a schematic plan view of the sensing layer 600 .

In some embodiments, the sensing layer 600 is a capacitive touch panel, and the first fingerprint identification unit 710 and the second fingerprint identification unit 720 are formed by patterning in the curved display area. The display panel further includes a touch driving chip 800, and the touch driving chip 800 is disposed on the side connecting the flat display area A1 and the curved display areas A2 and A3 on both sides. The sensing layer 600 forms touch electrodes in the display area, and forms fingerprint recognition electrodes on the fingerprint recognition unit. The touch electrodes include a plurality of rows of first touch electrodes 610 arranged at intervals along a first direction and a plurality of rows of second touch electrodes 620 arranged at intervals along a second direction, wherein the first direction is the horizontal direction in the schematic diagram , the second direction is the vertical direction in the schematic diagram, and the first direction and the second direction are perpendicular to each other. It should be noted that the first touch electrodes 610 are driving electrodes, the second touch electrodes 620 are receiving electrodes, and the touch unit further includes a plurality of first touch signal lines 630 and second touch signal lines arranged at intervals 640, the first touch signal lines 630 are perpendicular to the first direction, the second touch signal lines 640 are perpendicular to the second direction, and each row of the first touch electrodes 610 communicates with the touch driver chip through a first touch signal line 630 800 connection, each row of the second touch electrodes 620 is connected to the touch driver chip 800 through a second touch signal line 640, the first touch electrodes 610 and the second touch electrodes 620 form a coupling effect, and the fingers and the touch panel When 600 touches, the capacitance of the first touch electrode 610 and the second touch electrode 620 can be changed to determine the position of the finger. The first touch electrodes 610 and the second touch electrodes 620 are cross-connected to form a mesh structure, and the mesh structure may be a rectangle or a rhombus.

In some embodiments, the area of the sensing layer 600 is larger than that of the array substrate 400 , and the area of the array substrate 400 accounts for 80 to 90 percent of the sensing layer. In the array substrate 400, the array substrate includes a thin film transistor and a light-emitting functional layer, and the light-emitting functional layer includes an anode, a light-emitting material layer, and a cathode.

FIG. 5 is a schematic plan view of the fingerprint identification unit.

In some embodiments, the fingerprint identification electrodes include multiple columns of first fingerprint identification electrodes 7141 spaced along the first direction and multiple columns of second fingerprint identification electrodes 7142 spaced along the second direction. The unit also includes a plurality of columns of first fingerprint identification signal lines 7143 and second fingerprint identification signal lines 7144 arranged at intervals, and each column of first fingerprint identification electrodes 7141 communicates with the fingerprint identification driver chip (not shown in the figure) through a first fingerprint identification signal line 7143. shown) connection, each column of the second fingerprint identification electrodes 7142 is connected to the fingerprint identification driver chip through a second fingerprint identification signal line 7144. It should be noted that, in this embodiment, the first fingerprint identification electrode 7141 is a driving electrode, and the second fingerprint identification electrode 7142 is a receiving electrode. Of course, in some other embodiments, the first fingerprint identification electrode 7141 can also be a receiving electrode, and the second fingerprint identification electrode 7142 can be a driving electrode, which can also achieve the same technical effect as the above embodiment, which is not limited here.

In some embodiments, when the finger touches the screen, the first fingerprint recognition electrode 7141 sends out an electrical signal, and the second fingerprint recognition electrode 7142 receives the electrical signal. Since the pattern on the finger affects the first fingerprint recognition electrode 7141 With the capacitance of the second fingerprint identification electrode 7142, on a two-dimensional plane, a point on each fingerprint corresponds to a coordinate on the fingerprint identification unit, and each coordinate corresponds to a capacitance value, so a fingerprint pattern can generate a set of The charge signal of the fingerprint, each group of charge signals is transmitted to the chip and stored as a fingerprint image. When the finger presses the fingerprint identification unit for identification, each first fingerprint identification electrode 7141 sends an excitation signal in turn, and the second vertical fingerprint identification electrode 7142 receives the signal at the same time, so that the capacitance values of all the intersection points of the horizontal and vertical electrodes can be obtained. size, that is, the electrical signal about the entire fingerprint pattern. According to the variation data of the electrical signal of the fingerprint identification unit, the coordinates of each touch point can be calculated, and the fingerprint information can be restored for fingerprint matching.

In some embodiments, the first touch signal line, the second touch signal line, the first fingerprint identification signal line, and the second fingerprint identification signal line are all disposed on the same layer, and at the overlap, the first A touch signal line and one of the second touch signal lines are connected by first leads disposed on different film layers, and the first fingerprint identification signal line and the second fingerprint identification signal line are connected with each other. The first leads are connected to the second leads arranged on the same layer.

FIG. 6 is a schematic cross-sectional view of the sensing layer.

The sensing layer 600 includes a first insulating layer 713, a second insulating layer 715, a first metal layer 714 and a second metal layer 712, the second insulating layer is disposed on the first insulating layer, the first insulating layer The touch electrodes 610 , the second touch electrodes 620 (not shown in the figure), the first fingerprint recognition electrodes 7141 and the second fingerprint recognition electrodes 7142 are all disposed in the first metal layer 714 . The first metal layer is located on the side of the first insulating layer 713 away from the substrate, and is covered by the second insulating layer 715 . The first touch signal line 630 , the second touch signal line 640 , the first fingerprint identification signal line 7143 and the second fingerprint identification signal line 7144 (not shown in the figure) are all disposed on the same layer as the first touch electrode 610 . At the position where the first touch signal line 7143 and the second touch signal line 7144 overlap, the first lead wire in the second metal layer 712 disposed on the side of the first insulating layer 713 away from the second insulating layer 715 connects the first Two ends of a touch signal line are connected. It can be understood that the second lead and the first lead are arranged in the same layer, and at the position where the first fingerprint identification signal line and the second fingerprint identification signal line overlap, they are arranged on the first insulating layer 713 away from the second insulating layer. The second lead in the second metal layer 712 on one side of 715 connects the two ends of the first fingerprint identification signal line. In some other embodiments, both ends of the second touch signal line may also be connected through the first lead, and both ends of the second fingerprint identification signal line may be connected through the second lead. Of course, the second metal layer may also be disposed on the side of the second insulating layer away from the first insulating layer. The positions of the second metal layer where the first lead and the second lead are located may be limited according to actual conditions, which are not limited here.

In some embodiments, the materials of the first insulating layer 713 and the second insulating layer 715 may be the same or different. The materials of the first insulating layer 713 and the second insulating layer 715 may be silicon or silicon nitride. The insulating layer is formed with via holes. The flat layer 711 is an insulating material for separating the sensing layer 600 from the encapsulation layer 500 located at the bottom of the sensing layer 600 .

In some embodiments, the materials of the first metal layer 714 and the second metal layer 712 may be the same or different, and the materials of the metal layers are generally transparent conductive materials or metal materials. The second metal layer 712 is patterned to form the first lead and the second lead; the first metal layer is patterned to form the first touch electrode 610 , the second touch electrode 620 , the first fingerprint recognition electrode 7141 and the second fingerprint recognition electrode 7142 . The first fingerprint identification electrode 7141 projects a low-voltage high-frequency signal to the second fingerprint identification electrode 7142 to form a stable current, so the first fingerprint identification electrode 7141 and the second fingerprint identification electrode 7142 form an interactive capacitance, so the first fingerprint identification electrode 7141 and the second fingerprint identification electrode 7142 constitute the two poles of the capacitor. When the finger touches the screen above the fingerprint recognition unit, the finger and the screen form an equivalent capacitance, and the high-frequency signal can flow into the ground wire through the equivalent capacitance, so that the amount of charge received by the receiving end is reduced, and the closer the finger is to the screen, the closer to the transmitting end When the charge is reduced more obviously, the touchable point is determined according to the current intensity received by the receiving end. Since there are various lines on the fingerprint, the equivalent capacitance formed by each point on each fingerprint is different. The capacitances generated by the points on each fingerprint combine to form a clock signal, which is an electrical signal including all fingerprint information.

As shown in FIG. 4 , the touch unit is provided with a first accommodating area V1 and a second accommodating area V2 in the first curved display area A2 and the second curved display area A3, respectively, and the first accommodating area V1 and the second accommodating area V1 The accommodating area V2 is not provided with touch electrodes, and both sides connected to the opening of the first accommodating area V1 and the side opposite to the opening are provided with first touch electrodes 610 and second touch electrodes 620 , and the same is true for the second accommodating area V2. The first fingerprint recognition unit 710 is arranged in the first accommodating area V1, and the second fingerprint recognition unit 720 is arranged in the second accommodating area V2. Disposing in the first accommodating area V1 and the second accommodating area V2 of the touch unit can effectively reduce the first fingerprint identification unit 710 and the second fingerprint identification unit 720 occupying the curved display areas A2 and A3 on both sides of the display panel. space, thereby reducing the width of the borders on both sides of the display panel, thereby increasing the screen-to-body ratio of the display panel.

In some embodiments, the first touch signal lines corresponding to at least one column of first touch electrodes intersecting with the accommodating area pass through the gap between the touch unit and the fingerprint recognition unit, and will be disposed in the same column and located in the accommodating area. The two first touch electrodes on opposite sides of the placement area are connected.

As shown in FIG. 4 , taking the first accommodating area V1 on the right side and the first fingerprint identification unit 710 as an example, the first touch electrodes in the first row from right to left are divided into upper and lower parts by the first fingerprint identification unit 710 . , the first first touch signal line corresponding to the first row of touch electrodes passes through the gap between the first fingerprint identification unit 710 and the touch A fingerprint identification electrode is connected. Since the first touch signal line and the fingerprint identification electrodes, the first fingerprint identification signal line and the second fingerprint identification signal line in the first fingerprint identification unit 710 are all disposed on the same layer, the touch unit and the first fingerprint identification unit 710 are used The wiring between the gaps can simplify the wiring structure of the sensing layer. It should be noted that FIG. 5 illustrates the first fingerprint identification unit 710 and a row of first touch electrodes intersecting with the first fingerprint identification unit 710 , and does not represent the first touch electrode intersecting with the first fingerprint identification unit 710 . The actual number of rows of electrodes. In practical applications, there may be a situation where multiple rows of first touch electrodes intersect the first fingerprint identification unit 710 . At this time, multiple rows of first touch electrodes correspond to multiple first touch signals. The lines connect the two first touch electrodes on the upper and lower sides of the first fingerprint recognition unit 710 through the gap between the first fingerprint recognition unit 710 and the touch control unit. The positional relationship between the second fingerprint identification unit 710 located on the opposite side of the first fingerprint identification unit 710 and the touch unit is also the same, and the same technical effect can also be achieved, which is not repeated here.

As shown in FIG. 5 , taking the first accommodating area V1 on the right side and the first fingerprint recognition unit 710 as an example, two rows of second touch pads located on the side of the first accommodating area V1 away from the touch driving chip 800 The two second touch signal lines corresponding to the control electrodes extend from the edge of the curved display area away from the flat display area to the side of the touch driver chip 800 , and pass through the first touch unit 710 and fingerprint recognition. The gap between the units then goes around to the side of the curved display area away from the flat display area, and finally extends to connect with the touch driving chip 800 . One of the two second touch signal lines corresponding to the two columns of second touch electrodes intersecting the first accommodating area V1 detours to the curved surface through the gap between the touch unit and the first fingerprint identification unit 710 The display area is far from the edge of one side of the flat display area, and finally extends to connect with the touch driving chip 800, and the other touch signal line bypasses the gap between the fingerprint recognition unit and the touch unit disposed on the other side to reach the touch control unit. The curved display area is away from one edge of the flat display area, and finally extends to connect with the touch driving chip. The overlapping position of the first touch signal line 630 and the second touch signal line 640 in the first receiving region V1 can also be connected through the first lead. It should be noted that FIG. 5 illustrates the fingerprint identification unit and the two rows of second touch electrodes intersecting with the fingerprint identification unit, which does not mean that the second touch electrodes intersecting with the fingerprint identification unit and the second touch electrodes located in the accommodating area away from the touch Control the actual number of rows of second touch electrodes on one side of the driving chip. In practical applications, there may be situations where multiple rows of first touch electrodes intersect with the fingerprint recognition unit. The plurality of first touch signal lines are connected to the first touch electrodes on both sides of the fingerprint recognition unit through the gap between the fingerprint recognition unit and the touch control unit.

The present application also provides a display device, the display device includes a display panel and a chip, the display module includes a stacked substrate, a driving circuit layer, a light-emitting functional layer, an encapsulation layer and a sensing layer, wherein the display panel includes A flat display area and a curved display area located on both sides of the flat display area, the sensing layer is patterned in the curved display area to form a fingerprint recognition unit, and a touch unit is formed in the flat display area; the fingerprint recognition unit and the touch The control panel is connected, and the chip is used for storing fingerprint information and identifying fingerprint information.

In some embodiments, the chip includes: a collection unit for converting the received electrical signal into fingerprint information and then transmitting; a storage unit for storing preset fingerprint information of the user; a comparison unit for converting the received fingerprint information The information is compared with the stored preset fingerprint information, and a matching result or an unsuccessful matching instruction is issued.

FIG. 7 is a schematic diagram of the work flow of the fingerprint identification unit. The steps of fingerprint identification unit for fingerprint comparison are as follows:

S1: The fingerprint identification unit converts the fingerprint pattern into an electrical signal and transmits it to the acquisition unit.

S2: The acquisition unit converts the received electrical signal into fingerprint information and transmits it to the comparison unit.

S3: The comparison unit matches the received fingerprint identification information with the fingerprint information preset by the storage unit.

S4: The comparison unit issues an instruction according to the matching result.

In S1, the fingerprint identification unit is an interactive capacitance device, and the driving electrode and the receiving electrode of the fingerprint identification unit form a coupling effect, and different electrical signals are generated according to different fingerprint patterns, and the electrical signals are generally clock signals.

In S2, in order to facilitate storage, the acquisition unit converts the received clock signal into fingerprint information, and the fingerprint information is generally a binary array.

In some embodiments, the storage unit stores preset fingerprint information. When the user activates the fingerprint preset mode, the finger presses the fingerprint identification unit. The fingerprint identification unit converts the fingerprint pattern into a set of electrical signals and transmits it to the chip collection unit. The unit converts the received electrical signal into preset fingerprint information and transmits it to the storage unit for storage. Since the collected fingerprint information may be a part of the finger pattern, the stored fingerprint information should include all patterns of the fingerprint of a finger, and the array stored in the storage unit represents all the fingerprint information on a finger. In S3, the comparison unit matches the accepted fingerprint information with the pre-stored fingerprint information, and the matching of the accepted fingerprint information array to a segment of the array in the stored fingerprint information means that the matching is successful.

S4: If the matching is successful, the comparison unit sends an unlocking success instruction to activate the display panel and the touch panel, so that the screen of the display device is activated, and the screen displays the unlocking success instruction. If the matching is unsuccessful, the comparison unit sends an instruction that the unlocking is unsuccessful, and the display device displays an instruction that the unlocking is unsuccessful, please try again.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

A display panel and a display device thereof provided by the embodiments of the present application have been introduced in detail above. The principles and implementations of the present application are described with specific examples. The technical solution of the application and its core idea; those of ordinary skill in the art should understand that: it can still make modifications to the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements, The essence of the corresponding technical solutions does not deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

A display panel, comprising:

substrate;

a driving circuit layer, formed on one side of the substrate;

a light-emitting functional layer, formed on the side of the driving circuit layer away from the substrate;

an encapsulation layer, formed on the side of the light-emitting functional layer away from the substrate;

an induction layer, formed on the side of the encapsulation layer away from the substrate;

The display panel further includes a flat display area and a curved display area located on both sides of the flat display area, and the sensing layer is provided with fingerprint recognition in the curved display area located on at least one side of the flat display area. The sensing layer is provided with a touch unit in the flat display area and the curved display area.
The display panel of claim 1, wherein the curved display area includes a first curved display area and a second curved display area, and the fingerprint identification unit includes a first fingerprint identification disposed in the first curved display area unit and a second fingerprint identification unit disposed in the second curved display area.
The display panel of claim 1, wherein the touch control unit comprises a plurality of touch electrodes arranged in an array, the fingerprint recognition unit comprises a plurality of fingerprint recognition electrodes arranged in an array, and the touch control The electrodes are arranged on the same layer as the plurality of fingerprint identification electrodes.
The display panel according to claim 3, wherein the display panel further comprises a touch driving chip, and the touch driving chip is disposed in a connection between the flat display area and the curved display areas on both sides. side;

The touch electrodes include a plurality of rows of first touch electrodes arranged at intervals along a first direction and a plurality of rows of second touch electrodes arranged at intervals along a second direction, and the first direction is perpendicular to the second direction , the touch control unit further includes a plurality of first touch signal lines and second touch signal lines arranged at intervals, each row of the first touch electrodes is connected to the touch drive chip through a first touch signal line, each A row of second touch electrodes is connected to the touch driving chip through a second touch signal line;

The fingerprint identification electrodes include multiple rows of first fingerprint identification electrodes arranged at intervals along the first direction and multiple rows of second fingerprint identification electrodes arranged at intervals along the second direction, and the fingerprint identification unit further includes multiple rows of intervally arranged fingerprint identification electrodes. A first fingerprint identification signal line and a plurality of second fingerprint identification signal lines, each column of the first fingerprint identification electrode is connected to the touch driver chip through a first fingerprint identification signal line, and each column of the second fingerprint identification electrode is connected through a second fingerprint identification signal line. The fingerprint identification signal line is connected with the touch driving chip.
5. The display panel of claim 4, wherein the first touch signal line, the second touch signal line, the first fingerprint identification signal line and the second fingerprint identification signal line are all disposed on the same layer , and at the overlapping point, one of the first touch signal line and the second touch signal line is connected by a first lead disposed on a different film layer, and the first fingerprint identification signal line is connected to the second touch signal line. One of the second fingerprint identification signal lines is connected through a second lead wire arranged on the same layer as the first lead wire.
The display panel of claim 5, wherein the sensing layer comprises:

the first insulating layer;

a second insulating layer, disposed on the first insulating layer;

The touch electrodes are arranged on a side of the first insulating layer away from the substrate, and are covered by the second insulating layer, and the first leads are arranged on the first insulating layer away from the second insulating layer. One side of the insulating layer may be disposed on the side of the second insulating layer away from the first insulating layer.
The display panel of claim 4 , wherein the touch unit is provided with an accommodating area in the curved display area, and an opening of the accommodating area faces the curved display area and is away from the flat display area. On one side, the touch unit is disposed in the accommodating area and maintains a certain gap with the touch unit.
8. The display panel of claim 7 , wherein the first touch signal lines corresponding to at least one column of the first touch electrodes intersecting with the accommodating area pass through a connection between the touch unit and the fingerprint recognition unit. The gap connects the two first touch electrodes disposed in the same row and located on opposite sides of the accommodating area.
9. The display panel of claim 8, wherein at least one row of second touch electrodes located on a side of the accommodating area away from the touch driving chip and at least one row of second electrodes intersecting with the accommodating area correspond to The second touch signal line detours to the side of the curved display area away from the flat display area through the gap between the touch unit and the fingerprint recognition unit, and extends to the touch drive chip connection.
A display device, comprising a display panel, the display panel comprising:

substrate;

a driving circuit layer, formed on one side of the substrate;

a light-emitting functional layer, formed on the side of the driving circuit layer away from the substrate;

an encapsulation layer, formed on the side of the light-emitting functional layer away from the substrate;

an induction layer, formed on the side of the encapsulation layer away from the substrate;

The display panel further includes a flat display area and a curved display area located on both sides of the flat display area, and the sensing layer is provided with fingerprint recognition in the curved display area located on at least one side of the flat display area. The sensing layer is provided with a touch unit in the flat display area and the curved display area.
The display device according to claim 10, wherein the curved display area includes a first curved display area and a second curved display area, and the fingerprint identification unit includes a first fingerprint identification disposed in the first curved display area unit and a second fingerprint identification unit arranged in the second curved display area.
11. The display device of claim 10, wherein the touch control unit comprises a plurality of touch electrodes arranged in an array, the fingerprint recognition unit comprises a plurality of fingerprint recognition electrodes arranged in an array, and the touch control The electrodes are arranged on the same layer as the plurality of fingerprint identification electrodes.
13. The display device of claim 12, wherein the display panel further comprises a touch driving chip, and the touch driving chip is disposed in a connection between the flat display area and the curved display areas on both sides. side;

The touch electrodes include a plurality of rows of first touch electrodes arranged at intervals along a first direction and a plurality of rows of second touch electrodes arranged at intervals along a second direction, the first direction being perpendicular to the second direction , the touch control unit further includes a plurality of first touch signal lines and second touch signal lines arranged at intervals, each row of the first touch electrodes is connected to the touch drive chip through a first touch signal line, and each A row of second touch electrodes is connected to the touch driving chip through a second touch signal line;

The fingerprint identification electrodes include multiple rows of first fingerprint identification electrodes arranged at intervals along the first direction and multiple rows of second fingerprint identification electrodes arranged at intervals along the second direction, and the fingerprint identification unit further includes multiple rows of intervally arranged fingerprint identification electrodes. A first fingerprint identification signal line and a plurality of second fingerprint identification signal lines, each column of the first fingerprint identification electrode is connected to the touch driver chip through a first fingerprint identification signal line, and each column of the second fingerprint identification electrode is connected by a second fingerprint identification signal line. The fingerprint identification signal line is connected with the touch driving chip.
14. The display device of claim 13, wherein the first touch signal line, the second touch signal line, the first fingerprint identification signal line and the second fingerprint identification signal line are all disposed on the same layer , and at the overlapping point, one of the first touch signal line and the second touch signal line is connected by a first lead disposed on a different film layer, and the first fingerprint identification signal line is connected to the second touch signal line. One of the second fingerprint identification signal lines is connected through a second lead wire arranged on the same layer as the first lead wire.
The display device of claim 14, wherein the sensing layer comprises:

the first insulating layer;

a second insulating layer, disposed on the first insulating layer;

The touch electrodes are arranged on a side of the first insulating layer away from the substrate, and are covered by the second insulating layer, and the first leads are arranged on the first insulating layer away from the second insulating layer. One side of the insulating layer may be disposed on the side of the second insulating layer away from the first insulating layer.
The display device according to claim 13 , wherein the touch unit is provided with an accommodating area in the curved display area, and an opening of the accommodating area is toward the curved display area and away from the flat display area. On one side, the touch control unit is disposed in the accommodating area and maintains a certain gap with the touch control unit.
17. The display device of claim 16, wherein a first touch signal line corresponding to at least one column of the first touch electrodes intersecting with the accommodating area passes through a connection between the touch unit and the fingerprint recognition unit. The gap connects the two first touch electrodes disposed in the same row and located on opposite sides of the accommodating area.
18. The display device of claim 17, wherein at least one row of second touch electrodes on a side of the accommodating area away from the touch driving chip corresponds to at least one row of second electrodes intersecting with the accommodating area The second touch signal line detours to the side of the curved display area away from the flat display area through the gap between the touch unit and the fingerprint recognition unit, and extends to the touch drive chip connection.