CN111696487A

CN111696487A - Display panel and display device

Info

Publication number: CN111696487A
Application number: CN202010553207.7A
Authority: CN
Inventors: 周永祥; 田超
Original assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Technology Co Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-09-22

Abstract

The application provides a display panel and display device, a display panel includes that display area and setting are in the GOA circuit area outside the display area, wherein, be provided with a plurality of fingerprint identification units that are the array setting on the display area, each line fingerprint identification unit all inserts a fingerprint reset signal and a fingerprint reading signal, be provided with fingerprint GOA circuit on the GOA circuit area, fingerprint GOA circuit is used for exporting fingerprint reset signal and fingerprint reading signal. In this application, set up fingerprint GOA circuit and fingerprint identification unit in display panel, can drive simultaneously and show GOA circuit and fingerprint GOA circuit.

Description

Display panel and display device

Technical Field

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

Background

At present, electronic products such as mobile phones, computers, televisions and the like are widely applied to various aspects in life. Therefore, electronic display screens such as liquid crystal display panels and OLED display panels are widely used, and fingerprint identification is a common application. And the trend of full-screen requires that the fingerprint recognition module be integrated into the panel. Therefore, in addition to the original display GOA circuits on the left and right sides, a fingerprint GOA circuit needs to be added. Therefore, a new GOA driving scheme is needed to be found, which not only meets the GOA requirement for display, but also increases the GOA requirement for fingerprints.

Disclosure of Invention

The application provides a display panel and display device to solve current display panel and display device and can not satisfy the technical problem who shows GOA and fingerprint GOA demand simultaneously.

The application provides a display panel, which comprises a display area and a GOA circuit area arranged outside the display area; wherein,

the display area is provided with a plurality of fingerprint identification units arranged in an array, and each row of fingerprint identification units are connected with a fingerprint reset signal and a fingerprint reading signal;

the GOA circuit is characterized in that a fingerprint GOA circuit is arranged on the GOA circuit area and used for outputting the fingerprint reset signal and the fingerprint reading signal.

In the display panel provided by the present application, the fingerprint GOA circuit includes a first fingerprint GOA sub-circuit and a second fingerprint GOA sub-circuit;

the first fingerprint GOA sub-circuit comprises a plurality of first fingerprint GOA sub-units which are arranged in a cascade mode, and the first fingerprint GOA sub-units are used for outputting the fingerprint reset signals;

the second fingerprint GOA sub-circuit comprises a plurality of second fingerprint GOA sub-units which are arranged in a cascade mode, and the second fingerprint GOA sub-units are used for outputting the fingerprint reading signals;

the level number of the first fingerprint GOA subunit and the level number of the second fingerprint GOA subunit are equal to the number of lines of the fingerprint identification unit.

In the display panel provided by the present application, the first fingerprint GOA sub-unit and the second fingerprint GOA sub-unit are respectively located at two opposite sides of the display area.

In the display panel provided by the present application, the fingerprint GOA circuit includes a first fingerprint GOA sub-circuit, a second fingerprint GOA sub-circuit, a third fingerprint GOA sub-circuit, and a fourth fingerprint GOA sub-circuit;

the first fingerprint GOA sub-circuit comprises a plurality of first fingerprint GOA sub-units which are arranged in a cascade mode, the third fingerprint GOA sub-circuit comprises a plurality of third fingerprint GOA sub-units which are arranged in a cascade mode, the first fingerprint GOA sub-units are used for outputting the fingerprint reset signals to the fingerprint identification units on the odd-numbered lines, and the third fingerprint GOA sub-units are used for outputting the fingerprint reset signals to the fingerprint identification units on the even-numbered lines;

the second fingerprint GOA sub-circuit comprises a plurality of second fingerprint GOA sub-units which are arranged in a cascade mode, the fourth fingerprint GOA sub-circuit comprises a plurality of fourth fingerprint GOA sub-units which are arranged in a cascade mode, the second fingerprint GOA sub-units are used for outputting fingerprint reading signals to odd-numbered lines of fingerprint identification units, and the fourth fingerprint GOA sub-units are used for outputting the fingerprint reading signals to even-numbered lines of fingerprint identification units.

In the display panel provided by the present application, the first fingerprint GOA sub-unit and the third fingerprint GOA unit are respectively located on two opposite sides of the display area, and the second fingerprint GOA sub-unit and the fourth fingerprint GOA unit are respectively located on two opposite sides of the display area.

In the display panel provided by the application, a display GOA circuit is further arranged on the GOA circuit region, and the display GOA circuit is used for outputting scanning signals to scanning lines on the display region.

In the display panel provided by the present application, the display GOA circuit includes a first display GOA sub-circuit and a second display GOA sub-circuit;

the first display GOA sub-circuit comprises a plurality of cascade-arranged first display GOA sub-units, and the first display GOA sub-units are used for outputting the scanning signals to odd rows of scanning lines;

the second display GOA sub-circuit comprises a plurality of second display GOA sub-units which are arranged in a cascade mode, and the second display GOA sub-units are used for outputting the scanning signals to even rows of scanning lines.

In the display panel provided by the present application, the first display GOA sub-unit and the second display GOA sub-unit are respectively located at two opposite sides of the display area.

In the display panel provided by the present application, each of the fingerprint GOA units includes a first transistor, a second transistor, a third transistor, and a diode;

the grid electrode of the first transistor is electrically connected to the fingerprint reset signal, the source electrode of the first transistor is electrically connected to a first power supply signal, and the drain electrode of the first transistor is electrically connected to a first node;

a gate of the second transistor is electrically connected to the first node, a source of the second transistor is electrically connected to a second power supply signal, and a drain of the second transistor is electrically connected to a source of the third transistor;

the grid electrode of the third transistor is electrically connected to the fingerprint reading signal, and the drain electrode of the third transistor is electrically connected to a reading signal end;

one end of the diode is electrically connected to the input signal end, and the other end of the diode is electrically connected to the first node.

The application also provides a display device comprising the display panel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a first schematic plan view of a display panel provided in the present application.

Fig. 2 is a schematic structural diagram of a fingerprint identification unit provided in the present application.

Fig. 3 is a schematic structural diagram of a fingerprint GOA subunit in the fingerprint GOA sub-circuit provided in the present application.

Fig. 4 is a second schematic plan view of a display panel provided in the present application.

Fig. 5 is a third schematic plan view of a display panel provided in the present application.

Fig. 6 is a fourth schematic plan view of a display panel provided in the present application.

Fig. 7 is a fifth schematic plan view of a display panel provided in the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The transistors used in all embodiments of the present application may be thin film transistors or field effect transistors or other devices with the same characteristics, and since the source and drain of the transistors used herein are symmetrical, the source and drain may be interchanged. In the embodiment of the present application, to distinguish two poles of a transistor except for a gate, one of the two poles is referred to as a source, and the other pole is referred to as a drain. The form of the figure provides that the middle end of the transistor is a grid, the signal input end is a source, and the output end is a drain.

In the description of the present application, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second", etc. may explicitly or implicitly include one or more of the described features and are therefore not to be construed as limiting the application.

Referring to fig. 1 and fig. 2, fig. 1 is a first schematic plan view of a display panel provided in the present application. Fig. 2 is a schematic structural diagram of a fingerprint identification unit provided in the present application. Referring to fig. 1 and 2, the present application provides a display panel, which includes a display area 10 and a GOA circuit area 20 disposed outside the display area 10, wherein a plurality of fingerprint identification units 100 are disposed on the display area 10 in an array, and each row of fingerprint identification units 100 is connected to a fingerprint reset signal Rst and a fingerprint reading signal Gn. The GOA circuit area 20 is provided with a fingerprint GOA circuit 200, and the fingerprint GOA circuit 200 is configured to output a fingerprint reset signal Rst and a fingerprint readout signal Gn.

Specifically, the fingerprint GOA circuit 200 includes a first fingerprint GOA sub-circuit 210 and a second fingerprint GOA sub-circuit 220, where the first fingerprint GOA sub-circuit 210 includes a plurality of first fingerprint GOA sub-units 211 arranged in a cascade, and the first fingerprint GOA sub-units 211 are configured to output a fingerprint reset signal Rst. The second fingerprint GOA sub-circuit 220 comprises a plurality of cascade-arranged second fingerprint GOA sub-units 221. The second fingerprint GOA subunit 221 is configured to output a fingerprint reading signal Gn. The number of levels of the first fingerprint GOA subunit 211 and the number of levels of the second fingerprint GOA subunit 221 are both equal to the number of lines of the fingerprint identification unit 100. The first fingerprint GOA sub-unit 211 and the second fingerprint GOA sub-unit 212 are respectively located at two opposite sides of the display area 10.

The GOA circuit area 20 is further provided with a display GOA circuit 300, and the display GOA circuit 300 is configured to output a scan signal to a scan line on the display area. Display GOA circuit 300 includes a first display GOA sub-circuit 310 and a second display GOA sub-circuit 320. The first display GOA sub-circuit 310 includes a plurality of first display GOA sub-units 311 arranged in cascade. The second display GOA sub-circuit 320 includes a plurality of second display GOA sub-units 321 arranged in cascade.

In this embodiment, the first display GOA subunit 311 is configured to output a scan signal to an odd-numbered scan line, and the second display GOA subunit 321 is configured to output a scan signal to an even-numbered scan line. It is understood that the first display GOA sub-unit 311 and the second display GOA sub-unit 321 are respectively located at two opposite sides of the display area 10. In this embodiment, the first display GOA sub-unit 311 is located on a side of the first fingerprint GOA sub-unit 211 away from the display area 10, and the second display GOA sub-unit 321 is located on a side of the second fingerprint GOA sub-unit 212 away from the display area 10.

In another embodiment, the first display GOA subunit 311 is configured to output a scan signal to even-numbered scan lines, and the second display GOA subunit 321 is configured to output a scan signal to odd-numbered scan lines.

Further, each fingerprint recognition unit 100 includes a first transistor NT1, a second transistor NT2, a third transistor NT3, and a diode PIN 1. The gate of the first transistor NT1 is electrically connected to the fingerprint reset signal Rst, the source of the first transistor NT1 is electrically connected to the first power signal Vint, and the drain of the first transistor NT1 is electrically connected to the first node P. A gate of the second transistor NT2 is electrically connected to the first node P, a source of the second transistor NT2 is electrically connected to the second power signal VDD, and a drain of the second transistor NT2 is electrically connected to a source of the third transistor NT 2. The gate of the third transistor NT3 is electrically connected to the fingerprint reading signal Gn, and the drain of the third transistor NT3 is electrically connected to the reading signal terminal Read out. One end of the diode PIN1 is electrically connected to the input signal terminal COM, and the other end of the diode is electrically connected to the first node P.

Further, please refer to fig. 3, fig. 3 is a schematic structural diagram of a fingerprint GOA subunit in the fingerprint GOA sub-circuit provided in the present application. Each fingerprint GOA sub-unit includes a fourth transistor NT4, a fifth transistor NT5, a sixth transistor NT6, a seventh transistor NT7, an eighth transistor NT8, a ninth transistor NT9, a tenth transistor NT10, an eleventh transistor NT11, a twelfth transistor NT12, a thirteenth transistor NT13, a fourteenth transistor NT14, a fifteenth transistor NT15, a sixteenth transistor NT16, a first capacitor C1, and a second capacitor C2. The present application takes the output of the fingerprint reading signal Gn as an example.

The fourth transistor NT4, the fifth transistor NT5, the sixth transistor NT6 and the seventh transistor NT7 are pull-up control modules. The gate of the fourth transistor NT4 is electrically connected to the upper two-stage fingerprint reading signal G (n-2), the source of the fourth transistor NT4 is electrically connected to the forward direction scan signal U2D, the drain of the fourth transistor NT4 is electrically connected to the drain of the sixth transistor NT6 and the sources of the twelfth transistor NT12 and the fifth transistor NT5 through the second node Q, and outputs the upper two-stage fingerprint reading signal G (n-2). A gate of the fifth transistor NT5 is electrically connected to the second node Q, a source of the fifth transistor NT5 is electrically connected to the high level signal VGH, and a drain of the fifth transistor NT5 is electrically connected to the gate of the eighth transistor NT 8. The gate of the sixth transistor NT6 is electrically connected to the next two-stage fingerprint reading signal G (n +2), the source of the sixth transistor NT6 is electrically connected to the inverse scan signal D2U, and the drain of the sixth transistor NT6 is electrically connected to the drain of the fourth transistor NT4 and to the gate of the seventh transistor NT 7. A gate of the seventh transistor NT7 is electrically connected to the drain of the sixth transistor NT6 and the drain of the fourth transistor NT4, a source of the seventh transistor NT7 is electrically connected to the low level signal VGL, and a drain of the seventh transistor NT7 is electrically connected to the drain of the eleventh transistor NT 11.

The eighth transistor NT8 is a pull-up module, and is used for outputting the present-stage fingerprint reading signal g (n) according to the potential of the fifth transistor NT 5. The gate of the eighth transistor NT8 is electrically connected to the drain of the fifth transistor NT5, the source of the eighth transistor NT8 is electrically connected to the high-frequency clock signal ck (n), and the drain of the eighth transistor NT8 is electrically connected to the present-level fingerprint reading signal g (n).

The ninth transistor NT9, the tenth transistor NT10, the eleventh transistor NT11 and the twelfth transistor NT12 are pull-down control modules, the gate of the ninth transistor NT9 is electrically connected to the forward scan signal U2D, the source of the ninth transistor NT9 is electrically connected to the n +1 th high frequency clock signal CK (n +1), and the drain of the ninth transistor NT9 is electrically connected to the drain of the tenth transistor NT10 and the gate of the eleventh transistor NT 11. The gate of the tenth transistor NT10 is electrically connected to the reverse scan signal D2U, the source of the tenth transistor NT10 is electrically connected to the n-1 th high frequency clock signal CK (n-1), and the drain of the tenth transistor NT10 is electrically connected to the drain of the ninth transistor NT9 and the gate of the eleventh transistor NT 11. A gate of the eleventh transistor NT11 is electrically connected to the drains of the ninth transistor NT9 and the tenth transistor NT10, a source of the eleventh transistor NT11 is electrically connected to the high level signal VGH, and a drain of the eleventh transistor NT11 is electrically connected to the drain of the seventh transistor NT7, the gate of the twelfth transistor NT12, and the gate of the thirteenth transistor NT 13. A gate of the twelfth transistor NT12 is electrically connected to the drain of the fifteenth transistor NT15 and the gate of the thirteenth transistor NT13, a source of the twelfth transistor NT12 is electrically connected to the second node Q, a drain of the twelfth transistor NT12 is electrically connected to the gate of the sixteenth transistor NT16, and a connection line thereof has the second control signal GAS 2.

The thirteenth transistor NT13 is a pull-down module, the gate of the thirteenth transistor NT13 is electrically connected to the gate of the twelfth transistor NT12, the source of the thirteenth transistor NT13 is electrically connected to the drain of the eighth transistor NT8 and the drain of the fourteenth transistor NT14, and the drain of the thirteenth transistor NT13 is electrically connected to the low level signal VGL.

The fourteenth transistor NT14, the fifteenth transistor NT15 and the sixteenth transistor NT16 are detection modules, the source of the fourteenth transistor NT14 is electrically connected to the gate of the fifteenth transistor NT15 and is shorted with the gate of the fourteenth transistor NT14, a connection line thereof has a first control signal GAS1, and the drain of the fourteenth transistor NT14 is electrically connected to the drain of the eighth transistor NT8, the source of the thirteenth transistor NT13 and the present-level fingerprint reading signal g (n). A gate of the fifteenth transistor NT15 is electrically connected to the gate and the drain of the fourteenth transistor NT14, a connection line of which is provided with the first control signal GAS1, a source of the fifteenth transistor NT15 is electrically connected to the low level signal VGL, and a drain of the fifteenth transistor NT15 is electrically connected to the gate of the twelfth transistor NT12 and the gate of the thirteenth transistor NT 13. The gate of the sixteenth transistor NT16 is electrically connected to the second control signal GAS2, the source of the sixteenth transistor NT16 is electrically connected to the low level signal VGL, and the drain of the sixteenth transistor NT16 is electrically connected to the present level fingerprint reading signal g (n).

Two ends of the first capacitor C1 are electrically connected to the low level signal VGL and the second node Q, two ends of the second capacitor C2 are electrically connected to the low level signal VGL, the gate of the twelfth transistor NT12 and the gate of the thirteenth transistor NT13, respectively, and the first capacitor C1 and the second capacitor C2 are used for accumulating and storing charges.

In this application, a fingerprint GOA subunit may further include only the fourth transistor NT4, the fifth transistor NT5, the seventh transistor NT7, the eighth transistor NT8, the eleventh transistor NT11, the twelfth transistor NT12, the thirteenth transistor NT13, the sixteenth transistor NT16, the first capacitor C1, and the second capacitor C2, and the sixth transistor NT6, the ninth transistor NT9, the tenth transistor NT10, the fourteenth transistor NT14, and the fifteenth transistor NT15 are removed, so that the GOA width is reduced, and a narrow bezel is implemented.

It should be noted that fig. 3 only shows the schematic circuit diagram of the first fingerprint GOA sub-circuit and the second fingerprint GOA sub-unit in the first fingerprint GOA sub-circuit and the second fingerprint GOA sub-circuit, and other circuits capable of providing the fingerprint reading signal g (n) and the fingerprint reset signal Rst required by the present application are also applicable to the present application.

The principle of performing fingerprint identification by the fingerprint identification unit is as follows:

the first transistor NT1 is used for resetting the fingerprint signal, the first power signal Vint is a DC signal, when the fingerprint reset signal Rst is at a high potential, the first transistor NT1 is turned on, so that the first node Q is reset to a fixed voltage, then exposure is performed, at this time, the diode PIN1 generates a photo-generated current, so that the potential of the point Q of the first node is reduced, because the reflectivity of the fingerprint valley and the ridge is different, and the photo-generated current is different, so that the potentials of the first nodes Q of the pixels where the valley and the ridge are located are different, and finally, in the reading process, the second power signal VDD is a DC signal, when the fingerprint reading signal Gn is turned on, the reading circuit is a path, and the signal is sent to the IC. Due to the fact that Vgs of the first node Q is different due to different potentials, corresponding currents are different, the amount of electric charges or the voltage difference read by the IC is different, and therefore valleys or ridges of fingerprints are identified.

In the application, a fingerprint GOA subunit is arranged in a GOA circuit area outside a display area, and provides a fingerprint reset signal Rst and a fingerprint reading signal Gn required by the fingerprint identification unit, and a display GOA subunit is arranged in the GOA circuit area and is used for outputting scanning signals to scanning lines on the display area, so that the display GOA circuit and the fingerprint GOA circuit can be driven simultaneously; and a group of fingerprint GOA subunits are respectively arranged in the GOA circuit area outside the display area and are used for respectively providing the fingerprint reset signal Rst and the fingerprint reading signal Gn which are required by the fingerprint identification unit, and two groups of display GOA subunits are arranged in the GOA circuit area, so that the GOA width is reduced, and the display performance of the display panel is ensured.

Referring to fig. 4, fig. 4 is a second schematic plan view of a display panel provided by the present application. Among them, the display panel shown in fig. 4 is different from the display panel shown in fig. 1 in that: in the display panel shown in fig. 4, the first display GOA subunit 311 is disposed near one side of the display area 10, the second display GOA subunit 321 is disposed far from the other side of the display area 10, the first fingerprint GOA subunit 211 is disposed at one side of the first display GOA subunit 311 and far from one side of the display area 10, and the second fingerprint GOA subunit 221 is disposed between the display area 10 and the second display GOA subunit 321.

Referring to fig. 5, fig. 5 is a third schematic plan view of the display panel provided in the present application. Among them, the display panel shown in fig. 5 is different from the display panel shown in fig. 1 in that: in the display panel shown in fig. 5, the first display GOA subunit 311 is disposed at a side close to the display area 10. The second display GOA subunit 321 is disposed near the other side of the display area 10. The first fingerprint GOA subunit 211 is disposed on one side of the first display GOA subunit 311, and is disposed on one side away from the display area 10. The second fingerprint GOA sub-unit 221 is disposed at a side of the second display GOA sub-unit 321, and is far away from the display area 10.

Referring to fig. 6, fig. 6 is a fourth schematic plan view of a display panel provided in the present application. The fingerprint GOA circuit 200 includes a first fingerprint GOA sub-circuit 210, a second fingerprint GOA sub-circuit 220, a third fingerprint GOA sub-circuit 230, and a fourth fingerprint GOA sub-circuit 240. The first fingerprint GOA sub-circuit 210 comprises a plurality of first fingerprint GOA sub-units 211 arranged in a cascade, the third fingerprint GOA sub-circuit 230 comprises a plurality of third fingerprint GOA sub-units 231 arranged in a cascade, the first fingerprint GOA sub-units 211 are configured to output the fingerprint reset signal Rst to the odd-numbered line fingerprint identification units 100, and the third fingerprint GOA sub-units 231 are configured to output the fingerprint reset signal Rst to the even-numbered line fingerprint identification units 100. The sum of the series of the first fingerprint GOA sub-unit 211 and the third fingerprint GOA sub-unit 231 is equal to the number of lines of the fingerprint identification unit 100. The positions of the fingerprint reset signals Rst output by the first fingerprint GOA sub-unit 211 and the third fingerprint GOA sub-unit 231 to the odd and even line fingerprint identification units can be interchanged. The second fingerprint GOA sub-circuit 220 comprises a plurality of cascaded second fingerprint GOA sub-units 221, the fourth fingerprint GOA sub-circuit 240 comprises a plurality of cascaded fourth fingerprint GOA sub-units 241, the second fingerprint GOA sub-unit 221 is configured to output a fingerprint reading signal Gn to the odd-numbered line fingerprint identification unit 100, and the fourth fingerprint GOA sub-unit 241 is configured to output a fingerprint reading signal Gn to the even-numbered line fingerprint identification unit 100. The sum of the series of the second fingerprint GOA sub-unit 221 and the fourth fingerprint GOA sub-unit 241 is equal to the number of lines of the fingerprint identification unit 100. The positions of the fingerprint reading signal Gn output by the second fingerprint GOA sub-unit 221 and the fourth fingerprint GOA sub-unit 241 to the odd and even line fingerprint identification units may be interchanged. The first fingerprint GOA sub-unit 211 and the third fingerprint GOA sub-unit 231 are respectively located at two opposite sides close to the display area 10, and the second fingerprint GOA sub-unit 221 and the fourth fingerprint GOA sub-unit 241 are respectively located at two sides of the first fingerprint GOA sub-unit 211 and the third fingerprint GOA sub-unit 231, and are far away from two sides of the display area 10. The first display GOA sub-unit 311 and the second display GOA sub-unit 321 are respectively located at two sides of the second fingerprint GOA sub-unit 221 and the fourth fingerprint GOA sub-unit 241, and are far away from two sides of the display area 10.

Referring to fig. 7, fig. 7 is a fifth plane view of a display panel provided by the present application. Among them, the display panel shown in fig. 7 is different from the display panel shown in fig. 6 in that: in the display panel shown in fig. 6, the first GOA sub-unit 211 is located at a side close to the display area 10, the first GOA sub-unit 311 is located at a side of the first GOA sub-unit 211 away from the display area 10, the second GOA sub-unit 221 is located at a side of the first GOA sub-unit 311 away from the display area 10, the third GOA sub-unit 231 is located at another side close to the display area 10, the second GOA sub-unit 321 is located at another side of the third GOA sub-unit 231 away from the display area 10, and the fourth GOA sub-unit 241 is located at another side of the second GOA sub-unit 321 away from the display area 10.

In the application, a fingerprint GOA subunit is arranged in a GOA circuit area outside a display area, and provides a fingerprint reset signal Rst and a fingerprint reading signal Gn required by the fingerprint identification unit, and a display GOA subunit is arranged in the GOA circuit area and is used for outputting scanning signals to scanning lines on the display area, so that the display GOA circuit and the fingerprint GOA circuit can be driven simultaneously; two groups of fingerprint GOA subunits are respectively arranged in the GOA circuit area outside the display area and are used for respectively providing the fingerprint reset signal Rst and the fingerprint reading signal Gn which are required by the fingerprint identification unit, and two groups of display GOA subunits are arranged in the GOA circuit area, so that the consistency of signal transmission can be improved, and the display performance of the display panel is further ensured.

The present application further provides a display device, which includes all the technical features of the above display panel, and is not repeated herein.

The application provides a display panel and a display device.A fingerprint GOA subunit is arranged in a GOA circuit area outside a display area, a fingerprint reset signal Rst and a fingerprint reading signal Gn which are required by a fingerprint identification unit are provided, and a display GOA subunit is arranged in the GOA circuit area and is used for outputting scanning signals to scanning lines on the display area so as to drive and display the GOA circuit and the fingerprint GOA circuit at the same time; and a group of fingerprint GOA subunits are respectively arranged in the GOA circuit area outside the display area and are used for respectively providing the fingerprint reset signal Rst and the fingerprint reading signal Gn which are required by the fingerprint identification unit, and two groups of display GOA subunits are arranged in the GOA circuit area, so that the GOA width is reduced, and the display performance of the display panel is ensured.

The above embodiments are merely examples, and not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure, or their direct or indirect application to other related arts, are included in the scope of the present disclosure.

Claims

1. The display panel is characterized by comprising a display area and a GOA circuit area arranged outside the display area; wherein,

2. The display panel of claim 1, wherein the fingerprint GOA circuit comprises a first fingerprint GOA sub-circuit and a second fingerprint GOA sub-circuit;

3. The display panel according to claim 2, wherein the first GOA sub-unit and the second GOA sub-unit are respectively located at two opposite sides of the display area.

4. The display panel of claim 1, wherein the fingerprint GOA circuit comprises a first fingerprint GOA sub-circuit, a second fingerprint GOA sub-circuit, a third fingerprint GOA sub-circuit and a fourth fingerprint GOA sub-circuit;

5. The display panel according to claim 4, wherein the first GOA sub-unit and the third GOA sub-unit are respectively located at two opposite sides of the display area, and the second GOA sub-unit and the fourth GOA sub-unit are respectively located at two opposite sides of the display area.

6. The display panel according to claim 1, wherein a display GOA circuit is further disposed on the GOA circuit region, and the display GOA circuit is configured to output a scan signal to a scan line on the display region.

7. The display panel according to claim 6, wherein the display GOA circuit comprises a first display GOA sub-circuit and a second display GOA sub-circuit;

8. The display panel according to claim 7, wherein the first display GOA sub-unit and the second display GOA sub-unit are respectively located at two opposite sides of the display area.

9. The display panel according to claim 1, wherein each of the fingerprint GOA units comprises a first transistor, a second transistor, a third transistor and a diode;

10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.