CN112926524A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN112926524A CN112926524A CN202110341247.XA CN202110341247A CN112926524A CN 112926524 A CN112926524 A CN 112926524A CN 202110341247 A CN202110341247 A CN 202110341247A CN 112926524 A CN112926524 A CN 112926524A
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- G06—COMPUTING OR CALCULATING; COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
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Abstract
The embodiment of the invention discloses a display panel and a display device, wherein a display area of the display panel comprises a plurality of fingerprint identification areas which are arranged in an array manner; each fingerprint identification area comprises at least two rows of fingerprint identification units; the display area also comprises a plurality of pixels arranged in an array; the fingerprint identification unit is positioned at the gap between the pixels; the non-display area comprises a display scanning drive circuit, a decoding circuit, a plurality of starting signal lines and a plurality of fingerprint scanning drive circuits; the display scanning driving circuit comprises a plurality of display scanning driving units which are arranged in a cascade mode; the fingerprint scanning driving circuit comprises a plurality of fingerprint scanning driving units which are arranged in a cascade mode; the decoding circuit comprises a plurality of decoders; at least part of the structure of at least part of the decoder is positioned at the gap between the fingerprint scanning driving units; and/or at least part of the decoder is positioned at the gap between the display scanning driving units. The embodiment of the invention is beneficial to the narrow frame of the display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
Fingerprints are a pronoun for biometric identification due to their lifelong invariance, uniqueness and convenience. In particular, in the display device, functions such as unlocking and payment of the display device can be realized by performing fingerprint recognition on a user.
In the prior art, in order to realize the full-screen fingerprint identification function, the fingerprint identification unit needs to be partitioned in the display screen, the fingerprint identification unit in each area is driven by different scanning drive circuits, and at least one signal line is arranged between each scanning drive circuit and a drive chip to transmit corresponding scanning control signals, so that the corresponding display screen is difficult to realize a narrow frame.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide a display panel and a display device, so as to reduce the number of traces in a non-display area of the display panel and achieve a narrow frame of the display panel.
In a first aspect, an embodiment of the present invention provides a display panel, including: a display area and a non-display area surrounding the display area;
the display area comprises a plurality of fingerprint identification areas arranged in an array; each fingerprint identification area comprises at least two rows of fingerprint identification units; the display area further comprises a plurality of pixels arranged in an array; the fingerprint identification unit is positioned at the gap between the pixels;
the non-display area comprises a display scanning drive circuit, a decoding circuit, a plurality of starting signal lines and a plurality of fingerprint scanning drive circuits;
the display scanning driving circuit comprises a plurality of display scanning driving units which are arranged in a cascade mode; at least part of the pixels positioned on the same row are electrically connected with the same display scanning driving unit; each display scanning driving unit is used for sequentially outputting display scanning signals to each row of pixels;
the fingerprint scanning driving circuit comprises a plurality of fingerprint scanning driving units which are arranged in a cascade mode; at least part of the fingerprint identification units positioned on the same row are electrically connected with the same fingerprint scanning driving unit, and the fingerprint identification units belonging to the same fingerprint identification area are electrically connected with the fingerprint scanning driving unit of the same fingerprint scanning driving circuit; the decoding circuit comprises a plurality of decoders; the input end of the decoder is electrically connected with at least part of the starting signal wires, and the output end of each decoder is electrically connected with the first-stage fingerprint scanning driving unit of each fingerprint scanning driving circuit in a one-to-one correspondence manner; the decoder is used for selectively outputting a decoding signal to the first-stage fingerprint scanning driving unit according to the starting signal transmitted by each starting signal line; each fingerprint scanning driving unit of the fingerprint scanning driving circuit is used for sequentially outputting fingerprint scanning signals to each row of fingerprint identification units according to the decoding signals;
wherein at least part of the decoder is located at the gap between the fingerprint scanning driving units; and/or at least part of the decoder is positioned at the gap between the display scanning driving units.
In a second aspect, an embodiment of the present invention further provides a display device, including: the display panel is provided.
In the display panel and the display device provided by the embodiment of the invention, the decoding circuit is arranged in the non-display area, each decoder of the decoding circuit is respectively and electrically connected with at least part of the starting signal lines and the fingerprint scanning driving circuit, and after the starting signal transmitted on the starting signal lines is decoded by the decoder, the corresponding decoding signal is output to the first-stage fingerprint scanning driving unit of the fingerprint scanning driving circuit so as to control the fingerprint scanning driving circuit to sequentially output the fingerprint scanning signal to the fingerprint identification unit in the fingerprint identification area corresponding to the fingerprint scanning driving circuit. Compared with the situation that each fingerprint scanning driving circuit corresponds to one starting signal line, the embodiment of the invention can reduce the number of the starting signal lines by arranging the decoding circuit, thereby being beneficial to the narrow frame of the display panel; meanwhile, at least part of the structure of at least part of the decoder is arranged at the gap between the fingerprint scanning driving units, and/or at least part of the structure of at least part of the decoder is arranged at the gap between the display scanning driving units, so that the non-display transverse width can be reduced, the frame size of the display panel is further reduced, and the screen occupation ratio of the display panel is improved.
Drawings
FIG. 1 is a schematic diagram of a display panel according to the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a decoder according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a partial structure of a non-display area according to an embodiment of the present invention;
FIG. 7 is a schematic partial structure diagram of another non-display area provided in an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 11 is a schematic structural diagram of a fingerprint identification unit according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a display panel in the prior art. As shown in fig. 1, a display area 0110 of a display panel 001 having a full-screen fingerprint recognition function or a large-area fingerprint recognition function in the related art includes a plurality of pixels 010 arranged in an array and fingerprint recognition units 020 arranged at gaps of the pixels 010. The pixels 010 in the same row share the display scanning signal line 031, and the pixels 010 in the same column share the data signal line 033, so that when the scanning signal line 031 transmits the enable level of the display scanning signal, the data signal transmitted by the data signal line 033 can be written into the pixel 010 electrically connected to the scanning signal line 031 transmitting the enable level of the display scanning signal, so that the pixel 010 can display according to the data signal; similarly, the fingerprint identification unit 020 on the same row can share the fingerprint scanning signal line 032, and the fingerprint identification unit 020 on the same column shares the fingerprint signal reading line 034, so that when the fingerprint scanning signal line 032 transmits the enable level of the fingerprint scanning signal, the fingerprint identification unit 020 can output the fingerprint identification signal to the fingerprint signal reading line 034, and the fingerprint signal reading line 034 transmits the fingerprint identification signal to the driving chip.
In the prior art, in order to improve the efficiency of fingerprint identification, the display area 0110 is divided into a plurality of fingerprint identification areas 0111, and each fingerprint identification area 0111 may include at least two rows of fingerprint identification units 020; when fingerprint recognition is performed, the contact position between the finger and the touch surface of the display panel 001 may be determined first, and then the fingerprint recognition unit 020 in the fingerprint recognition region 0111 where the contact position is located may be activated to output a fingerprint recognition signal. At this time, a plurality of fingerprint scanning drive circuits 040 are provided in the non-display region 0120 of the display panel 001, and the fingerprint recognition cells 020 in each row of the fingerprint recognition region 0111 can be individually driven by the corresponding fingerprint scanning drive circuit 040. Because each fingerprint scanning drive circuit 040 is independently started without interference, a plurality of start signal lines 050 used for transmitting start signals are needed to be arranged, so that each start signal line 050 can transmit corresponding start signals to each fingerprint scanning drive circuit 040 to control the start and stop of each fingerprint scanning drive circuit 040; for example, when 20 fingerprint scanning drive circuits 040 are provided in the non-display area 0120, 20 start signal lines 050 for transmitting start signals to the display scanning drive circuits 040 need to be provided correspondingly. In addition, the non-display area 0120 should be further provided with a display scan driving circuit 060 for sequentially outputting the enable level of the display scan signal to each display scan signal line 031. In this way, the size of the non-display area 0120 of the display panel 001 in the transverse direction X at least includes the sum of the width of the fingerprint scan driving circuit 040, the width of the plurality of start signal lines 050 and the width of the display scan driving circuit, i.e., L1+ L2+ L3, so that the frame of the display panel 001 in the transverse direction X is wide, which is not favorable for the narrow frame of the display panel 001.
To solve the above technical problem, an embodiment of the present invention provides a display panel, which includes a display area and a non-display area surrounding the display area; the display area comprises a plurality of fingerprint identification areas arranged in an array; each fingerprint identification area comprises at least two rows of fingerprint identification units; the display area also comprises a plurality of pixels arranged in an array; the fingerprint identification unit is positioned at the gap between the pixels; the non-display area comprises a display scanning drive circuit, a decoding circuit, a plurality of starting signal lines and a plurality of fingerprint scanning drive circuits; the display scanning driving circuit comprises a plurality of display scanning driving units which are arranged in a cascade mode; at least part of the pixels positioned on the same row are electrically connected with the same display scanning driving unit; each display scanning driving unit is used for sequentially outputting display scanning signals to each row of pixels; the fingerprint scanning driving circuit comprises a plurality of fingerprint scanning driving units which are arranged in a cascade mode; at least part of the fingerprint identification units positioned on the same row are electrically connected with the same fingerprint scanning driving unit, and all the fingerprint identification units belonging to the same fingerprint identification area are electrically connected with the fingerprint scanning driving unit of the same fingerprint scanning driving circuit; the decoding circuit comprises a plurality of decoders; the input end of the decoder is electrically connected with at least part of the starting signal wires, and the output end of each decoder is electrically connected with the first-stage fingerprint scanning driving units of each fingerprint scanning driving circuit in a one-to-one correspondence manner; the decoder is used for selectively outputting a decoding signal to the first-stage fingerprint scanning driving unit according to the starting signal transmitted by each starting signal line; each fingerprint scanning driving unit of the fingerprint scanning driving circuit is used for sequentially outputting fingerprint scanning signals to each row of fingerprint identification units according to the decoding signals; wherein at least part of the decoder is located at the gap between the fingerprint scanning driving units; and/or at least part of the decoder is positioned at the gap between the display scanning driving units.
By adopting the technical scheme, on one hand, the decoding circuit is arranged in the non-display area, each decoder of the decoding circuit is respectively and electrically connected with at least part of the starting signal lines and the fingerprint scanning driving circuit, and after the starting signal transmitted on the starting signal lines is decoded by the decoders, the corresponding decoding signal is output to the first-stage fingerprint scanning driving unit of the fingerprint scanning driving circuit so as to control the fingerprint scanning driving circuit to sequentially output the fingerprint scanning signal to the fingerprint identification unit in the fingerprint identification area corresponding to the fingerprint scanning driving circuit; on the other hand, at least part of the structure of the decoder is arranged at the gap between the fingerprint scanning driving units, and/or at least part of the structure of the decoder is arranged at the gap between the display scanning driving units, so that the transverse frame size of the display panel occupied by the decoder can be reduced, the non-display width of the display panel in the transverse direction is reduced, the frame size of the display panel is further reduced, the narrow frame of the display panel is facilitated, and the screen occupation ratio of the display panel is improved.
The above is the core idea of the present invention, and based on the embodiments of the present invention, a person skilled in the art can obtain all other embodiments without creative efforts, which belong to the protection scope of the present invention. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that the display panel provided in the embodiment of the present invention may be a display panel with a full-screen fingerprint identification function, or a display panel with a large-area fingerprint identification function, which is not specifically limited in the embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention. As shown in fig. 2. The display panel 100 includes a display area 110 and a non-display area 120 surrounding the display area 110; the display area 110 includes a plurality of fingerprint identification areas 1001 arranged in an array; each fingerprint identification area 111 comprises at least two rows of fingerprint identification units 20; the display area 110 further includes a plurality of pixels 10 arranged in an array; the fingerprint identification unit 20 is located at the gap between the pixels 10, so as not to affect the display area 110 of the display panel 100 to display the corresponding picture on the premise that the full-screen fingerprint identification function can be realized.
The non-display area 120 includes a display scan driving circuit 60, a decoding circuit 70, a plurality of enable signal lines 50, and a plurality of fingerprint scan driving circuits 40. The display scanning driving circuit 60 includes a plurality of display scanning driving units 61 arranged in cascade; at least some of the pixels 10 in the same row are electrically connected to the same display scan driving unit 61; each display scan driving unit 61 is used for sequentially outputting a display scan signal to each row of pixels 10. Illustratively, the display area 110 further includes a plurality of display scan signal lines 31 and a plurality of data signal lines 33, the display scan signal lines 31 are electrically connected to the pixels 10 in the same row, the data signal lines 33 are shared by the pixels 10 in the same column, the first-stage display scan driving unit in the display scan driving units 61 arranged in cascade is electrically connected to one start signal line 52, and under the control of the start signal transmitted by the start signal line 52, the display scan driving units 61 of each stage from the first-stage display scan driving unit to the last-stage display scan driving unit sequentially output the display scan signals to the pixels 10 in each row through the display scan signal lines 31, so that the data signals transmitted by the data signal lines 33 can be written into the pixels 10 in a one-to-one correspondence manner, so that the display panel 100 presents a corresponding picture.
The fingerprint scanning drive circuit 401(402, …, or 40n) includes a plurality of fingerprint scanning drive units 41 arranged in cascade; at least some of the fingerprint identification units 20 in the same row are electrically connected to the same fingerprint scanning driving unit 41, and the fingerprint identification units 20 belonging to the same fingerprint identification area 1001 are electrically connected to the fingerprint scanning driving unit 41 of the same fingerprint scanning driving circuit 401(402, …, or 40 n); illustratively, the display area 110 may further include a plurality of fingerprint scanning signal lines 32 and a plurality of fingerprint signal readout lines 34, when the fingerprint identification units 20 in the same row share the fingerprint scanning signal lines 32, the fingerprint identification units 20 in the same column share the fingerprint signal readout lines 34, and each fingerprint scanning driving unit is electrically connected to the fingerprint identification unit 20 via the fingerprint scanning signal lines, the fingerprint scanning driving units 41 electrically connected to each fingerprint identification unit 20 in the fingerprint identification area 1001 in the same row belong to the same fingerprint scanning driving circuit (401, 402, …, or 40n), that is, the fingerprint scanning driving units 41 electrically connected to each fingerprint identification unit 20 in the fingerprint identification area 111 in the first row belong to the fingerprint scanning driving circuit 401, the fingerprint scanning driving units 41 electrically connected to each fingerprint identification unit 20 in the fingerprint identification area 112 in the second row belong to the fingerprint scanning driving circuit 402, …, the fingerprint scanning driving circuit 40n is the fingerprint scanning driving circuit 41 electrically connected with each fingerprint identification unit 20 in the fingerprint identification area 11n in the nth row; in this way, when each fingerprint scanning driving circuit (401, 402, …, 40n) operates independently, the fingerprint identification units 20 in each row of fingerprint identification area 1001 can be driven independently to drive the fingerprint identification units 20 in the fingerprint identification area 1001 where the position where the fingerprint identification unit contacts with the finger belongs individually, so that the fingerprint identification units 20 in each row of fingerprint identification area 1001 can sequentially output fingerprint identification signals to the corresponding signal processing modules (driving chips) through the fingerprint signal reading lines 34 to acquire the fingerprint image of the finger. In this way, it is not necessary to drive all the fingerprint recognition units 20 in the entire display area, thereby shortening the time required for fingerprint recognition and improving the efficiency of fingerprint recognition.
The decoding circuit 70 includes a plurality of decoders (71, 72, …, 7 n); an input end of a decoder 71(72, … or 7n) is electrically connected with at least part of the starting signal lines (511, 512, 513, 514, 515), an output end of each decoder (71, 72, …, 7n) is electrically connected with the first-stage fingerprint scanning driving unit 41 of each fingerprint scanning driving circuit (401, 402, …, 40n) in a one-to-one correspondence mode, namely, an output end of the decoder 71 is electrically connected with the first-stage fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 401, an output end of the decoder 72 is electrically connected with the first-stage fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 402, …, and an output end of the decoder 7n is electrically connected with the first-stage fingerprint scanning driving unit 61 of the fingerprint scanning driving circuit 40 n. The decoder 71(72, …, or 7n) is used for selectively outputting a decoding signal to the first stage fingerprint scanning driving unit 41 according to the activation signal transmitted by each activation signal line (511, 512, 513, 514, 515).
Since the fingerprint identification units 20 in the same column share the fingerprint signal reading line 34, so that only one fingerprint identification unit 20 can be driven to output a fingerprint identification signal at the same time, the corresponding encoding circuit is arranged in the driving chip to encode the start signal and then output the start signal to each start signal line (511, 512, 513, 514, 515), so that the start signal transmitted by each start signal line (511, 512, 513, 514, 515) can only control one decoder (71, 72, …, or 7n) in the decoding circuit 70 to output a corresponding decoding signal at the same time, and accordingly the first-stage fingerprint scanning driving unit 41 which controls the corresponding fingerprint scanning driving circuit (401, 402, …, or 40n) is started. In this way, the decoder (71, 72, …, 7n) decodes the start signal transmitted by each start signal line (511, 512, 513, 514, 515), so as to selectively control the corresponding fingerprint scanning driving circuit (401, 402, …, or 40n) to start, and sequentially output the fingerprint scanning signal to each row of fingerprint identification units 20.
Illustratively, five start signal lines (511, 512, 513, 514, 515) for transmitting start signals are electrically connected with n decoders (71, 72, …, 7n) correspondingly, and when a first-stage fingerprint scanning driving unit 41 of each fingerprint scanning driving circuit (401, 402, …, 40n) receives a high-level decoding signal, the first-stage fingerprint scanning driving unitFor example, the fingerprint scanning driving circuit (401, 402, …, or 40n) to which the driving unit 41 belongs is activated and sequentially outputs the fingerprint scanning signals, and each decoder (71, 72, …, 7n) selectively outputs the decoded signals according to the activation signals transmitted by each activation signal line (511, 512, 513, 514, 515) according to the principle that: if the high-level signal is "1" and the low-level signal is "0", when the start signal transmitted by each start signal line (511, 512, 513, 514, 515) is "00001", the decoder 71 may output a high-level decoding signal to the first-stage fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 401, and the other decoders output low-level decoding signals, so that each fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 401 sequentially outputs a fingerprint scanning signal to each fingerprint recognition unit 20 of the fingerprint recognition area 111, so that each row of fingerprint recognition units 20 of the fingerprint recognition area 111 can sequentially output fingerprint recognition signals; when the start signals transmitted by the start signal lines (511, 512, 513, 514, 515) are "00010", the decoder 72 may output a high-level decoding signal to the first-stage fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 402, and the other decoders output low-level decoding signals, so that the fingerprint scanning driving units 41 of the fingerprint scanning driving circuit 402 sequentially output fingerprint scanning signals to the fingerprint identification units 20 of the fingerprint identification area 112, and the fingerprint identification units 20 of each row of the fingerprint identification area 112 may sequentially output fingerprint identification signals; …, respectively; when the start signals transmitted by the start signal lines (511, 512, 513, 514, 515) are "11111", the decoder 7n may output a high-level decoding signal to the first-stage fingerprint scanning driving unit 41 of the fingerprint scanning driving circuit 40n, and the other decoders output low-level decoding signals, so that the fingerprint scanning driving units 4n of the fingerprint scanning driving circuit 40n sequentially output fingerprint scanning signals to the fingerprint identification units 20 of the fingerprint identification area 111, and the fingerprint identification units 20 of each row of the fingerprint identification area 11n may sequentially output fingerprint identification signals; i.e. transmission 2 via five enable signal lines (511, 512, 513, 514, 515)5The combination of the start signals enables five start signal lines (511, 512, 513, 514, 515) to independently control 32 fingerprint scanning driversAnd starting and stopping the circuit 40, wherein n can be less than or equal to 32.
In this way, compared to the case where each fingerprint scanning driving circuit corresponds to one start signal line, by providing the decoding circuit 70, each decoder (71, 72, …, 7n) of the decoding circuit 70 can realize start-stop (i.e., programmed control) of the plurality of fingerprint scanning driving circuits 40 according to the start signals transmitted by the fewer start signal lines (511, 512, 513, 514, 515), so that the number of start signal lines 50 provided in the non-display area 120 can be relatively reduced, the occupied space of the start signal lines 50 can be reduced, and the narrow frame of the display panel 100 can be facilitated.
In addition, by disposing at least part of the structure of at least part of the decoders (72, …) at the gaps between the fingerprint scan driving units 41 and disposing at least part of the structure of at least part of the decoders (71, …, 7n) at the gaps between the display scan driving units 61, the decoders (72, …) and the fingerprint scan driving units 41 are sequentially arranged in the column direction Y of the pixels 10, and the decoders (71, …, 7n) and the display scan driving units 61 are sequentially arranged in the column direction Y of the pixels 10, so that the size of the non-display area 120 of the display panel 100 in the row direction X of the pixels 10 is not increased by disposing the decoders (71, 72, …, 7n), thereby being capable of facilitating a narrow bezel of the display panel 100 and improving the screen occupation ratio of the display panel 100.
It should be noted that fig. 2 is a diagram illustrating an embodiment of the present invention, and fig. 2 illustrates only that the partial decoders (72, …) are located at the gaps between the fingerprint scanning driving units 41, and the partial decoders (71, …, 7n) are located at the gaps between the display scanning driving units 61; in the embodiment of the present invention, all the decoders and the fingerprint scanning driving units may be sequentially arranged along the column direction of the pixels (as shown in fig. 3), or all the decoders and the display scanning driving units may be sequentially arranged along the column direction of the pixels (as shown in fig. 4), which has a similar technical principle to that shown in fig. 2 and is not described herein again.
For convenience of description, in the embodiments of the present invention, without specific description, all decoders and fingerprint scanning driving units are arranged in sequence along the column direction of the pixels, and the technical solutions of the embodiments of the present invention are exemplarily described.
Optionally, fig. 5 is a schematic structural diagram of a decoder according to an embodiment of the present invention. As shown in fig. 3 and 5, the decoder 71(72, …, or 7n) includes a not gate logic circuit 701 and a nor gate logic circuit 702; the not gate logic circuit 701 includes P first input terminals I1 and P first output terminals O1; the P first input ends I1 are electrically connected with the P starting signal lines 51 in a one-to-one correspondence manner; the not logic circuit 701 is used for inverting the start signal transmitted by the start signal line 51; the nor gate logic circuit 702 comprises Q second input terminals I2, M third input terminals I3, and a second output terminal O2; the Q second input ends I2 are electrically connected with the Q first output ends O1 in a one-to-one correspondence manner, and the M third input ends I3 are electrically connected with the M starting signal lines 51 in a one-to-one correspondence manner; the second output terminal O2 is electrically connected to the first stage fingerprint scanning driving unit 41; the nor logic circuit 702 is configured to output a decoding signal to the first-stage fingerprint scanning driving unit 41 according to the start signal transmitted by the start signal line 51 and the inverted signal output by the nor logic circuit 701; wherein M is a positive integer, and M + Q ═ P, P and Q are both positive integers, and P is not less than Q.
For example, the nor logic circuit 701 includes 5 first input terminals I1 and 5 first output terminals O1, and the nor logic circuit 702 includes 2 second input terminals I2 and 3 third input terminals I3. The first input terminals (I11, I12, I13, I14, I15) of the not gate circuit 701 are respectively and electrically connected with the start signal lines (511, 512, 513, 514, 515) in a one-to-one correspondence manner, and the first output terminals (O11, O12, O13, O14, O15) output the inverted signals of the start signals transmitted by the start signal lines (511, 512, 513, 514, 515) in a one-to-one correspondence manner, for example, when the start signal transmitted by the start signal lines (511, 512, 513, 514, 515) is "10010", the inverted signals output by the first output terminals (O11, O12, O13, O14, O15) are "01101"; the two first output ends (O11 and O21) are respectively and correspondingly electrically connected with the two second input ends (I21 and I22) one by one, and 3 third input ends (I31, I32 and I33) are respectively and correspondingly electrically connected with the three start signal lines (513, 514 and 515), at this time, the nor gate can output a corresponding decoding signal according to the inverted signals output by the two first output ends (O11 and O21) and the start signals transmitted by the three start signal lines (513, 514 and 515), namely (01010), so as to determine whether to control the fingerprint scanning driving circuit 401(402, … and 40n) electrically connected with the decoder 71(72, … or 7n) to be started or not.
The not gate logic circuit 701 may include P inverters U; the input ends of the P inverters U are electrically connected to the P start signal lines 51 in a one-to-one correspondence, and the output ends of the Q inverters of the P inverters U are electrically connected to the Q second input ends I2 in a one-to-one correspondence. In this way, the simple nor circuit 701 and the nor circuit 702 can decode the start signal transmitted by the start signal line 51, so as to simplify the structure of the display panel 100 on the premise of reducing the frame size of the display panel 100.
Optionally, fig. 6 is a schematic partial structure diagram of a non-display area according to an embodiment of the present invention. As shown in fig. 3 and 6, the nor logic 701 and the nor logic 702 of the decoders (71, 72, …, 7n) are both located at the gap between the fingerprint scanning driving units 41. Thus, it is not necessary to add an extra space in the row direction X of the pixel 10 to set a decoder, so that the size of the non-display area 120 in the row direction X of the pixel 10 can be reduced, which is beneficial to the narrow frame of the display panel 100 and improves the screen occupation ratio of the display panel 100.
It should be noted that fig. 6 is an exemplary diagram of an embodiment of the present invention, and in the embodiment of the present invention, both the nor logic circuit and the nor logic circuit of the decoder may be disposed at a gap between the display scan driving units; or, the NOT gate logic circuit and the NOT gate logic circuit of one part of decoder are both arranged at the gap between the fingerprint scanning driving units, and the NOT gate logic circuit of the other part of decoder are both arranged at the gap between the display scanning driving units; at this time, the size of the non-display area in the row direction of the pixels can be reduced as well.
Optionally, fig. 7 is a schematic partial structure diagram of another non-display area provided in an embodiment of the present invention. As shown in fig. 3 and 7, the decoders (71, 72, …, 7n) share the not gate logic circuit 701; and the first output terminals electrically connected to the second input terminals of different nor gate logic circuits 702 are not identical.
In this way, by sharing the not logic circuit 701 with the decoders (71, 72, …, 7n), the number of not logic circuits 702 provided in the display panel 100 can be reduced, and the space for providing the decoders (71, 72, …, 7n) can be saved, thereby further reducing the frame size of the display panel 100 and facilitating a narrow frame of the display panel; meanwhile, when the decoders (71, 72, …, 7n) share the not gate logic circuit 701, the first output terminals electrically connected to the second input terminals of different nor gate logic circuits 702 are not identical, so that the nor gate logic circuits 702 do not output the enable levels of the decoded signals at the same time, thereby preventing the two fingerprint scanning driving circuits from being activated at the same time and affecting the accuracy of fingerprint identification.
Alternatively, with reference to fig. 3, 5 and 7, the nor gate logic circuits 701 are sequentially arranged along the first direction Y; the non-display area 120 further includes P bar inversion signal lines 53 extending in the first direction Y and arranged in the second direction X; the first direction Y intersects the second direction X; each first output terminal I1 is electrically connected to each second input terminal I2 of each nor gate logic circuit 702 through each inverted signal line 53.
For example, the nor logic circuit 701 includes five first input terminals I1 and five first output terminals O1, and the nor logic circuit 702 includes two second input terminals I2 and three third input terminals I3. At this time, five inversion signal lines 53 may be correspondingly disposed; the nor logic circuit 702 includes two second input terminals I2 electrically connected to two inverted signal lines of the five inverted signal lines 53, respectively, and three third input terminals I3 of the nor logic circuit 702 electrically connected to three enable signal lines of the five enable signal lines 52, respectively. For example, two second inputs I21 and I22 of the not gate logic circuit 702 of the decoder 71 are electrically connected through the inverting signal lines 531 and 532 to the first outputs O11 and O12 of the nand gate logic circuit, respectively, and three third inputs I31, I32, and I33 of the not gate logic circuit 702 of the decoder 71 are electrically connected to three enable signal lines 513, 514, and 515, respectively; the two second inputs I21 and I22 of the not-gate logic circuit 702 of the decoder 72 are electrically connected to the first outputs O11 and O13 of the nand-gate logic circuit through inversion signal lines 531 and 533, respectively, and the three third inputs I31, I32, and I33 of the not-gate logic circuit 702 of the decoder 72 are electrically connected to the three enable signal lines 512, 514, and 515, respectively; …, respectively; the two second inputs I21 and I22 of the not gate logic circuit 702 of the decoder 72 are electrically connected to the first outputs O14 and O15 of the nand gate logic circuit through inversion signal lines 534 and 535, respectively, and the three third inputs I31, I32, and I33 of the not gate logic circuit 702 of the decoder 72 are electrically connected to the three enable signal lines 511, 512, and 513, respectively. In this manner, by electrically connecting the nor gate logic circuits 701 of different decoders to different inversion signal lines 53 and enable signal lines 51, each decoder (71, 72, …, 7n) can selectively output a corresponding decode signal to the first-stage fingerprint scan driving unit of the corresponding fingerprint scan driving circuit (401, 402, …, 40 n).
Optionally, with continuing reference to fig. 3 and 7, the nor gate logic 702 of the decoders (71, 72, …, 7n) is located at the gap between the fingerprint scan driver cells 41. In this way, the nor gate circuit 702 does not need to be additionally arranged in the row direction X of the pixels 10, so that the size of the non-display area 120 in the row direction X of the pixels 10 can be reduced, thereby being beneficial to a narrow frame of the display panel 100 and improving the screen occupation ratio of the display panel 100.
It should be noted that fig. 7 is only an exemplary diagram of an embodiment of the present invention, and in the embodiment of the present invention, the nor gate logic circuit of the decoder may also be disposed at the gap between the display scan driving units; or, the NOR gate logic circuit of one part of the decoder is arranged at the gap between the fingerprint scanning driving units, and the NOR gate logic circuit of the other part of the decoder is arranged at the gap between the display scanning driving units; at this time, the size of the non-display area in the row direction of the pixels can be reduced as well. Correspondingly, when the nor gate logic circuits of the decoders are arranged at the gaps among the fingerprint scanning driving units, the nor gate logic circuits shared by all the decoders can also be arranged at the gaps among the display scanning driving units; or, when the nor gate logic circuits of the decoders are arranged at the gaps between the display scanning driving units, the nor gate logic circuits shared by the decoders can also be arranged at the gaps between the fingerprint scanning driving units; or, when the nor gate logic circuits of one part of the decoders are arranged at the gap between the fingerprint scanning driving units and the nor gate logic circuits of the other part of the decoders are arranged at the gap between the display scanning driving units, the nor gate logic circuits shared by the decoders can be selectively arranged at the gap between the fingerprint scanning driving units or the display scanning driving units.
Optionally, with continuing reference to fig. 3 and 7, the non-display area 120 further includes a driving chip setting area 121; the driving chip setting region 121 is used for setting a driving chip; the driving chip is used for providing a starting signal; at this time, the not gate logic circuits 701 may be disposed on a side of each nor gate logic circuit 701 close to the driver chip disposing region 121, so as to reduce a transmission distance of the start signal transmitted from the driver chip to the not gate logic circuit 701, thereby reducing a loss of the start signal output from the driver chip to the not gate logic circuit 701, and further improving an accuracy of the start signal received by the not gate logic circuit 701.
Optionally, fig. 8 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. As shown in fig. 8, the display area 110 further includes a virtual cell group 80 located at the gap of the fingerprint identification area 1001; each virtual cell group 80 includes at least one virtual cell 81. In this way, the fingerprint identification units 20 in each fingerprint identification area 1001 in the display area 110 are divided into areas, and the fingerprint identification units 20 in two adjacent rows of fingerprint identification areas 1001 are prevented from interfering with each other.
Alternatively, with continued reference to fig. 8, the virtual cell group 80 corresponds to the decoders (70, 71, …, 7n) one to one, and the decoders (70, 71, …, 7n) are located at one side of the virtual cell group 80 corresponding thereto along the first direction Y; the first direction Y is a column direction of the fingerprint identification area 1001. In this way, by providing the dummy cell group 80, the decoders (70, 71, …, and 7n) can be disposed on one side of the fingerprint scanning driving unit 41 and/or the display scanning driving unit 61 along the first direction Y without changing the size of the fingerprint scanning driving unit 41 and/or the display scanning driving unit 61, which is further beneficial to realizing a narrow frame of the display panel 100.
Optionally, fig. 9 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. As shown in fig. 9, the display scan driving circuit 60 and the fingerprint scan driving circuit 40 are respectively located at opposite sides of the display area 120. In this way, the frame sizes of the two opposite sides of the display panel 100 can be uniform, thereby being beneficial to improving the overall aesthetic property of the display panel.
Optionally, fig. 10 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. As shown in fig. 10, the fingerprint scanning drive circuit 40 includes a first fingerprint scanning drive circuit 4001 and a second fingerprint scanning drive circuit 4002; the fingerprint scanning driving unit 411 of the first fingerprint scanning driving circuit 4001 is electrically connected to the first scanning signal input terminal of the fingerprint identification unit 20; the fingerprint scanning driving unit 412 of the second fingerprint scanning driving circuit 4002 is electrically connected with the second scanning signal input end of the fingerprint identification unit 20; each fingerprint scanning driving unit 411 of the first fingerprint scanning driving circuit 4001 is configured to sequentially output a first fingerprint scanning signal to each row of fingerprint identification units 20 according to the decoding signal; each fingerprint scanning driving unit 412 of the second fingerprint scanning driving circuit 4002 is configured to sequentially output a second fingerprint scanning signal to each row of fingerprint identification units 20 according to the decoding signal; the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 are respectively located on two opposite sides of the display area.
Exemplarily, fig. 11 is a schematic structural diagram of a fingerprint identification unit according to an embodiment of the present invention. As shown in fig. 11, the fingerprint recognition unit 20 includes a fingerprint recognition element D, a storage circuit Cst, a reset transistor Trs, a driving transistor Tsf, and a selection output transistor Tsel. A first pole of the fingerprint identification element D and a first pole of the storage capacitor Cst may each receive the bias signal Vbias, a first pole of the driving transistor Tsf and a first pole of the reset transistor Trs may each receive the power supply signal VDD, a second pole of the reset transistor Trs, a second pole of the fingerprint identification element D, and a second pole of the storage circuit Cst are each electrically connected to a gate of the driving transistor Tsf, a second pole of the driving transistor Tsf is electrically connected to a first pole of the selection output transistor Tsel, and the second pole of the selection output transistor Tsel serves as an output terminal of the fingerprint identification unit 20 to output the fingerprint identification signal Vout.
In conjunction with fig. 10 and 11, during the reset phase of the fingerprint identification unit 20, the fingerprint scanning driving unit 411 of the first fingerprint scanning driving circuit 4001 may output the first fingerprint scanning signal to the gate of the reset transistor Trs according to the decoding signal to turn on the reset transistor Trs, and transmit the power supply signal VDD to the gate of the driving transistor Tsf to reset the driving transistor Tsf; at this time, the fingerprint recognition element D may generate an electric signal from a finger return light signal received by it from the contact surface of the display panel 100, and transmit to the gate of the driving transistor Tsf; in the signal output stage of the fingerprint identification unit 20, the fingerprint scanning driving unit 412 of the second fingerprint scanning driving circuit 4002 can output the second fingerprint scanning signal to the selection output transistor Tsel according to the decoding signal, and control the selection output transistor Tsel to be turned on, so that the driving transistor Tsf generates the fingerprint identification signal according to the electrical signal of the gate thereof, and the fingerprint identification signal is output through the turned-on selection output transistor Tsel. In this way, by providing the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 separately, the fingerprint identification unit 20 can selectively output corresponding fingerprint identification signals; meanwhile, the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 are respectively arranged on two opposite sides of the display area 110 of the display panel 100, so that the sizes of the frames on the two opposite sides of the display panel 100 can be uniform, and the overall attractiveness of the display panel can be improved.
Alternatively, with continued reference to fig. 10, when the fingerprint scanning driving circuit 40 includes the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002, the plurality of decoders include a plurality of first decoders 701 and a plurality of second decoders 702; the input end of the first decoder 701 is electrically connected with at least part of the starting signal lines 501, and the output end of each first decoder 701 is electrically connected with the first-stage fingerprint scanning driving units 411 of each first fingerprint scanning driving circuit 4001 in a one-to-one correspondence manner; the first decoder 701 is configured to selectively output a decoding signal to the first-stage fingerprint scanning driving unit 411 of the first fingerprint scanning driving circuit 4001 according to the start signal transmitted by each start signal line 501, so that each first fingerprint scanning driving circuit 4001 can sequentially output a first fingerprint scanning signal to each row of fingerprint identification units 20 according to the enable level of the decoding signal output by the corresponding first decoder 701; the input end of the second decoder 702 is electrically connected to at least part of the start signal lines 502, and the output end of each second decoder 702 is electrically connected to the first-stage fingerprint scanning driving units 412 of each second fingerprint scanning driving circuit 4002 in a one-to-one correspondence manner; the second decoder 702 is configured to selectively output a decoding signal to the first-stage fingerprint scanning driving unit 412 of the second fingerprint scanning driving circuit 4002 according to the start signal transmitted by each start signal line 502, so that each second fingerprint scanning driving circuit 4002 can sequentially output a second fingerprint scanning signal to each row of fingerprint identification units 20 according to the enable level of the decoding signal output by the corresponding second decoder 702. In this way, by providing the first decoder 701 and the second decoder 702 to control the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 respectively, the control modes of the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 can be simplified, so that the fingerprint identification process of the display panel 100 is simplified, and the fingerprint identification efficiency and accuracy of the display panel 100 are improved.
Alternatively, with continued reference to fig. 11, when at least part of the structure of at least part of the decoders is located at the gaps between the fingerprint scan driving units, at least part of the first decoder 701 is located at the gaps between the fingerprint scan driving units 411 of the first fingerprint scan driving circuit 4001, and at least part of the second decoder 702 is located at the gaps between the fingerprint scan driving units 412 of the second fingerprint scan driving circuit 4002. As described above, when the first fingerprint scanning driving circuit 4001 and the second fingerprint scanning driving circuit 4002 are respectively disposed on the two opposite sides of the display region 110, the first decoder 701 and the second decoder 702 can also be disposed on the two opposite sides of the display region 110, and the overall appearance of the display panel can be further improved; meanwhile, the first decoder 701 is disposed at the gap between the fingerprint scanning driving units 411 of the first fingerprint scanning driving circuit 4001, and the second decoder 702 is disposed at the gap between the fingerprint scanning driving units 412 of the second fingerprint scanning driving circuit 4002, so that the frame sizes at the two sides of the display panel 100 can be reduced in the row direction X of the pixels 10, thereby being beneficial to the narrow frame of the display panel 100, and further improving the screen occupation ratio of the display panel 100.
Optionally, fig. 12 is a schematic structural diagram of another display panel provided in the embodiment of the present invention. As shown in fig. 12, the display scan driving circuit 60 includes a first display scan driving circuit 601 and a second display scan driving circuit 602; the first display scanning driving circuit 601 and the second display scanning driving circuit 602 are respectively located at two opposite sides of the display area 110; when at least a part of the structure of at least a part of the decoders is located at the gaps between the display scan driving units, at least a part of the structure of at least a part of the first decoder 701 is located at the gaps between the display scan driving units 611 of the first display scan driving circuit 601, and at least a part of the structure of at least a part of the second decoder 702 is located at the gaps between the display scan driving units 612 of the second display scan driving circuit 602.
For example, the first display scan driving circuit 601 may be electrically connected to the pixels 10 of the odd-numbered rows, and the second display scan driving circuit 602 may be electrically connected to the pixels of the even-numbered rows, so that the first display scan driving circuit 601 can provide the display scan signals to the pixels 10 of the odd-numbered rows and the second display scan driving circuit 602 can provide the display scan signals to the pixels 10 of the even-numbered rows. Meanwhile, by providing the first scan driving circuit 601 and the second scan driving circuit 602 on two opposite sides of the display region 110, the appearance of the display panel 100 can be further improved. In addition, the first decoder 701 is disposed at the gap between the display scan driving units 611 of the first display scan driving circuit 601, and the second decoder 702 is disposed at the gap between the display scan driving units 612 of the second display scan driving circuit 602, so that the frame sizes of both sides of the display panel 100 can be reduced in the row direction X of the pixels 10, which is beneficial to a narrow frame of the display panel 100, and thus, the screen occupation ratio of the display panel 100 can be improved.
It should be noted that fig. 10 and fig. 12 are only exemplary diagrams of the embodiment of the present invention, and the first decoder and the second decoder may be arranged in other ways in the embodiment of the present invention, for example, a part of the first decoder is arranged between the fingerprint scan driving units of the first fingerprint scan driving circuit, another part of the first decoder is arranged between the display scan driving units of the first display scan driving circuit, a part of the second decoder is arranged between the fingerprint scan driving units of the second fingerprint scan driving circuit, and another part of the second decoder is arranged between the display scan driving units of the second display scan driving circuit; on the premise that a narrow frame of a display panel can be realized, the arrangement mode of the first decoder and the second decoder is not particularly limited in the embodiment of the present invention.
Based on the same inventive concept, embodiments of the present invention further provide a display device, where the display device includes the display panel provided in the embodiments of the present invention, and therefore the display device has the technical features of the display panel provided in the embodiments of the present invention, and can achieve the beneficial effects of the display panel provided in the embodiments of the present invention, and in the same places, reference may be made to the above description of the display panel, and details are not repeated here.
Exemplarily, fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 13, the display device 200 includes the display panel 100 according to the embodiment of the present invention. The display apparatus 200 may be, for example, a portable display device, a wearable display device, and the like, which is not particularly limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (16)
1. A display panel, comprising: a display area and a non-display area surrounding the display area;
the display area comprises a plurality of fingerprint identification areas arranged in an array; each fingerprint identification area comprises at least two rows of fingerprint identification units; the display area further comprises a plurality of pixels arranged in an array; the fingerprint identification unit is positioned at the gap between the pixels;
the non-display area comprises a display scanning drive circuit, a decoding circuit, a plurality of starting signal lines and a plurality of fingerprint scanning drive circuits;
the display scanning driving circuit comprises a plurality of display scanning driving units which are arranged in a cascade mode; at least part of the pixels positioned on the same row are electrically connected with the same display scanning driving unit; each display scanning driving unit is used for sequentially outputting display scanning signals to each row of pixels;
the fingerprint scanning driving circuit comprises a plurality of fingerprint scanning driving units which are arranged in a cascade mode; at least part of the fingerprint identification units positioned on the same row are electrically connected with the same fingerprint scanning driving unit, and the fingerprint identification units belonging to the same fingerprint identification area are electrically connected with the fingerprint scanning driving unit of the same fingerprint scanning driving circuit; the decoding circuit comprises a plurality of decoders; the input end of the decoder is electrically connected with at least part of the starting signal wires, and the output end of each decoder is electrically connected with the first-stage fingerprint scanning driving unit of each fingerprint scanning driving circuit in a one-to-one correspondence manner; the decoder is used for selectively outputting a decoding signal to the first-stage fingerprint scanning driving unit according to the starting signal transmitted by each starting signal line; each fingerprint scanning driving unit of the fingerprint scanning driving circuit is used for sequentially outputting fingerprint scanning signals to each row of fingerprint identification units according to the decoding signals;
wherein at least part of the decoder is located at the gap between the fingerprint scanning driving units; and/or at least part of the decoder is positioned at the gap between the display scanning driving units.
2. The display panel according to claim 1, wherein the decoder includes a not gate logic circuit and a nor gate logic circuit;
the NOT gate logic circuit comprises P first input ends and P first output ends; the P first input ends are electrically connected with the P starting signal lines in a one-to-one correspondence manner; the NOT gate logic circuit is used for inverting the starting signal transmitted by the starting signal line;
the NOR gate logic circuit comprises Q second input ends, M third input ends and a second output end; the Q second input ends are electrically connected with the Q first output ends in a one-to-one corresponding mode, and the M third input ends are electrically connected with the M starting signal lines in a one-to-one corresponding mode; the second output end is electrically connected with the first-stage fingerprint scanning driving unit; the NOR gate logic circuit is used for outputting a decoding signal to the first-stage fingerprint scanning driving unit according to a starting signal transmitted by the starting signal line and an inverted signal output by the NOR gate logic circuit; wherein M is a positive integer, and M + Q ═ P, P and Q are both positive integers, and P is not less than Q.
3. The display panel according to claim 2, wherein the not gate logic circuit includes P inverters;
the input ends of the P phase inverters are electrically connected with the P starting signal lines in a one-to-one corresponding mode, and the output ends of Q phase inverters in the P phase inverters are electrically connected with the Q second input ends in a one-to-one corresponding mode.
4. The display panel according to claim 2, wherein at least a portion of the inverter logic circuits and the inverter logic circuits of the decoder are located at a gap between the fingerprint scan driving units;
and/or at least part of the NOT gate logic circuit and the NOT gate logic circuit of the decoder are positioned at the gap between the display scanning driving units.
5. The display panel according to claim 2, wherein each of the decoders shares the not gate logic circuit;
the first output ends electrically connected with the second input ends of different NOR gate logic circuits are not identical.
6. The display panel according to claim 5, wherein the nor gate logic circuits are sequentially arranged in a first direction;
the non-display area further comprises P inverted signal lines which extend along the first direction and are arranged along the second direction; the first direction intersects the second direction;
each of the first output terminals is electrically connected to each of the second input terminals of each of the nor gate logic circuits through each of the inverted signal lines.
7. The display panel of claim 5, wherein at least some of the NOR gate logic circuits of the decoder are located at gaps between the fingerprint scan driving units;
and/or at least part of NOR gate logic circuits of the decoder are positioned at the gap between the display scanning driving units.
8. The display panel according to claim 7, wherein the non-display region further comprises a driver chip setting region; the driving chip setting area is used for setting a driving chip; the driving chip is used for providing the starting signal;
the NOR gate logic circuit is positioned on one side of each NOR gate logic circuit, which is close to the drive chip setting area.
9. The display panel of claim 1, wherein the display area further comprises a group of virtual cells located at a gap in the fingerprint identification area; each of the virtual cell groups includes at least one virtual cell.
10. The display panel according to claim 9, wherein the virtual cell groups are in one-to-one correspondence with the decoders, the decoders being located on one side of the virtual cell groups corresponding thereto in a first direction; wherein the first direction is a column direction of the fingerprint identification area.
11. The display panel according to claim 1, wherein the display scan driving circuit and the fingerprint scan driving circuit are respectively located at two opposite sides of the display area.
12. The display panel according to claim 1, wherein the fingerprint scan driving circuit comprises a first fingerprint scan driving circuit and a second fingerprint scan driving circuit;
the fingerprint scanning driving unit of the first fingerprint scanning driving circuit is electrically connected with the first scanning signal input end of the fingerprint identification unit; the fingerprint scanning driving unit of the second fingerprint scanning driving circuit is electrically connected with the second scanning signal input end of the fingerprint identification unit;
each fingerprint scanning driving unit of the first fingerprint scanning driving circuit is used for sequentially outputting a first fingerprint scanning signal to each row of the fingerprint identification units according to the decoding signal;
each fingerprint scanning driving unit of the second fingerprint scanning driving circuit is used for sequentially outputting a second fingerprint scanning signal to each row of the fingerprint identification units according to the decoding signal;
the first fingerprint scanning driving circuit and the second fingerprint scanning driving circuit are respectively located on two opposite sides of the display area.
13. The display panel according to claim 12, wherein the plurality of decoders include a plurality of first decoders and a plurality of second decoders;
the input end of the first decoder is electrically connected with at least part of the starting signal wires, and the output end of each first decoder is electrically connected with the first-stage fingerprint scanning driving unit of each first fingerprint scanning driving circuit in a one-to-one correspondence manner; the first decoder is used for selectively outputting a decoding signal to a first-stage fingerprint scanning driving unit of the first fingerprint scanning driving circuit according to the starting signal transmitted by each starting signal line;
the input end of each second decoder is electrically connected with at least part of the starting signal wires, and the output end of each second decoder is electrically connected with the first-stage fingerprint scanning driving unit of each second fingerprint scanning driving circuit in a one-to-one correspondence manner; the second decoder is used for selectively outputting decoding signals to the first-stage fingerprint scanning driving unit of the second fingerprint scanning driving circuit according to the starting signals transmitted by the starting signal lines.
14. The display panel of claim 13, wherein when at least part of the decoder is located at the gap between the fingerprint scan driving units, at least part of the first decoder is located at the gap between the fingerprint scan driving units of the first fingerprint scan driving circuit, and at least part of the second decoder is located at the gap between the fingerprint scan driving units of the second fingerprint scan driving circuit.
15. The display panel according to claim 13, wherein the display scan driver circuit comprises a first display scan driver circuit and a second display scan driver circuit; the first display scanning driving circuit and the second display scanning driving circuit are respectively positioned at two opposite sides of the display area;
when at least part of the decoder is located at the gap between the display scanning driving units, at least part of the first decoder is located at the gap between the display scanning driving units of the first display scanning driving circuit, and at least part of the second decoder is located at the gap between the display scanning driving units of the second display scanning driving circuit.
16. A display device, comprising: the display panel according to any one of claims 1 to 15.
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| CN119446023A (en) * | 2024-10-23 | 2025-02-14 | 京东方科技集团股份有限公司 | Display panel and driving method thereof, and display device |
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