Display panel and display apparatus

A display panel and a display apparatus are provided. The display panel has a display region including a fingerprint recognition region. The fingerprint recognition region includes a plurality of light-transmitting apertures. The display panel includes a plurality of sub-pixels, a plurality of touch electrodes, and a plurality of touch leads that are located in the display region. The plurality of touch leads is electrically connected to the plurality of touch electrodes, respectively. The display region includes sub-pixel spacing regions located between two adjacent sub-pixels, and at most one of the touch lead and the light-transmitting aperture is arranged in the sub-pixel spacing region.

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the benefit of Chinese Patent Application No. 202210336719.7, filed on Mar. 31, 2022, the content of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies, and, particularly, relates to a display panel and a display apparatus.

BACKGROUND

In recent years, display apparatuses with biometric recognition functions have gradually entered people's life and work. Fingerprint recognition technology has been widely applied in applications such as unlocking and secure payment due to a unique identity of fingerprints.

However, the display panel has a poor fingerprint recognition accuracy, and misjudgment occurs during recognition. Therefore, it is an urgent technical problem to be solved that how to improve the fingerprint recognition performance.

SUMMARY

In a first aspect of the present disclosure, a display panel is provided. The display panel has a display region and includes a plurality of sub-pixels, a plurality of touch electrodes, and a plurality of touch leads that are located in the display region. The plurality of touch leads is respectively electrically connected to the plurality of touch electrodes. The display region includes a fingerprint recognition region, and the fingerprint recognition region includes a plurality of light-transmitting apertures. The display region includes a plurality of sub-pixel spacing regions, one of the plurality of sub-pixel spacing regions is located between two adjacent sub-pixels of the plurality of sub-pixels, and at most one of one of the plurality of touch leads and one of the plurality of light-transmitting apertures is provided in one of the plurality of sub-pixel spacing regions.

In a second aspect of the present disclosure, a display apparatus is provided. The display apparatus includes a display panel. The display panel has a display region and includes a plurality of sub-pixels, a plurality of touch electrodes, and a plurality of touch leads that are located in the display region. The plurality of touch leads is respectively electrically connected to the plurality of touch electrodes. The display region includes a fingerprint recognition region, and the fingerprint recognition region includes a plurality of light-transmitting apertures. The display region includes a plurality of sub-pixel spacing regions, one of the plurality of sub-pixel spacing regions is located between two adjacent sub-pixels of the plurality of sub-pixels, and at most one of one of the plurality of touch leads and one of the plurality of light-transmitting apertures is provided in one of the plurality of sub-pixel spacing regions.

DESCRIPTION OF EMBODIMENTS

In order to better understand the technical solutions of the present disclosure, the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only some embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present disclosure.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. As used in the embodiments of this application and the appended claims, the singular forms “a/an” “the” and “said” are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that the term “and/or” used in this document is only an association relationship to describe the associated objects, indicating that there can be three relationships, for example, A and/or B, which can indicate that A alone, A and B, and B alone. The character “/” in this document generally indicates that the related objects are an “or” relationship.

Conventionally, multiple light-transmitting apertures for fingerprint imaging are provided in the display panel in order to realize a fingerprint recognition function. However, due to the small size of such light-transmitting apertures, they are easily shieled by some metal layers in the display panel, resulting in less detection light entering through the light-transmitting apertures and poor fingerprint recognition accuracy.

A display panel is provided in the present disclosure.FIG.1is a top view of a display panel according to some embodiments of the present disclosure. As shown inFIG.1, the display panel includes a display region1. The display region1includes a fingerprint recognition region2. The fingerprint recognition region2includes a light-transmitting apertures for fingerprint imaging. A partial region or a whole region of the display region1can be reused into the fingerprint recognition region2.

FIG.2is a partial cross-sectional view of a display panel according to some embodiments of the present disclosure, andFIG.3is a partial schematic diagram of a display panel according to some embodiments of the present disclosure. As shown inFIG.2andFIG.3, the display panel further includes multiple sub-pixels4located in the display region1, multiple touch electrodes5located in the display region1, and multiple touch leads6located in the display region1. The touch electrode5and the touch lead6can be located at a side of the sub-pixel4toward a light-emitting direction of the display panel. The touch lead6is electrically connected to the touch electrode5and is configured to transmit a touch detection signal sensed by the touch electrode5to a driving circuit, and the driving circuit is configured to determine a touch position of the finger according to the received touch detection signal. In some embodiments, the touch electrode5can be a self-capacitance touch electrode. Multiple touch electrodes5are independently arranged in a matrix. Each touch electrode5can be electrically connected to one touch lead6. When a finger touches a display screen, the capacitance of the finger is superimposed on the touch electrode5, so that the capacitance sensed by the touch electrode5changes, and the touch position of the finger is determined according to the touch detection signals transmitted by the touch electrodes5at different positions.

The display region1includes a sub-pixel spacing region7. The sub-pixel spacing region7is located between two adjacent sub-pixels4, and is provided with at most one of the touch lead6and the light-transmitting aperture3.

In some embodiments of the present disclosure, referring toFIG.2, a bottom metal layer8for shielding ambient light is provided at a side of the sub-pixel4away from the light-emitting direction of the display panel. The light-transmitting aperture3can be a through hole penetrating the bottom metal layer8. When performing fingerprint recognition, the light emitted from the sub-pixel4can be used as the light for recognition and is transmitted to the finger and reflect by the finger, and the detection light reflected back passes through the light-transmitting aperture3and is incident to a photosensitive sensor9at the bottom of the display panel, and then the valleys and ridges of the fingerprint are recognized according to the intensity of the detection light collected by the photosensitive sensor9at different positions.

For a display panel with both touch and fingerprint recognition functions, when designing the touch electrodes5and the touch leads6in the display panel, in order to shield the sub-pixels4less, referring toFIG.3again, the touch electrode5can be a block electrode made of a light-transmitting conductive material such as indium tin oxide (Indium Tin Oxides, ITO).FIG.4is a schematic diagram of touch electrodes according to some embodiments of the present disclosure. In some embodiments, as shown inFIG.4, the touch electrode5can also be a grid electrode made of a metal material. A hollow region of the touch electrode5exposes the sub-pixel4. In order to reduce a voltage drop when the touch detection signal is transmitted on the touch lead and improve the detection accuracy at the touch position, the touch lead6is generally made of a metal material with low resistivity, and also has sufficient line width to reduce its resistance.

When the touch electrode5has a metal grid structure, the light-transmitting aperture3can be kept way directly by setting breakpoints on metal grids. Due to the structure feature of the metal grids, even if there are breakpoints at some positions, it will not be completely separated from the electrode body, so that the metal bars on the metal grid are connected to each other, thereby still achieving normal functions. However, for the touch lead6, if the touch lead6is provided with a hollow region or a breakpoint, disconnection between the touch electrode5and the driving circuit may occur, and thus the touch detection signal cannot be transmitted normally, and it is difficult to make the touch lead6to bypass the light-transmitting aperture3. When the self-capacitive touch is used, the touch leads6can pass through the display region to be electrically connected to multiple touch electrodes5in a one-to-one correspondence, so that there are a large number of touch leads6in the display region, increasing a risk that the light-transmitting apertures3are blocked by the touch leads6.

In the embodiments of the present disclosure, the extension manner of the touch lead6cooperates with the arrangement of the light-transmitting apertures3, so that only at most one of the touch lead6and the light-transmitting aperture3is provided in the sub-pixel spacing region7located between any two adjacent sub-pixels4. On the one hand, the touch lead6and the light-transmitting aperture3are located in different sub-pixel spacing regions7, since the distance between the touch lead6and the light-transmitting aperture3is relatively far, even if deviations occur in the arrangement position of the touch lead6and/or the arrangement position of the light-transmitting aperture3due to factors such as process errors, the touch lead6cannot cover the light-transmitting aperture3to shield the light-transmitting aperture3, thus improving the amount of detection light able to pass through the light-transmitting aperture3, and improving the fingerprint recognition accuracy.

On the other hand, if the touch lead6and the light-transmitting aperture3are located in a same sub-pixel spacing region7, in order to achieve that the touch lead6does not shield the light-transmitting aperture3, either the touch lead6is arranged as far away from the light-transmitting aperture3as possible, or a line width of the touch lead6can be reduced. When the distance between the touch lead and the light-transmitting aperture is increased, the touch lead6and the light-transmitting aperture3tend to be closer to the sub-pixel4, which makes it difficult to maintain a large distance between the sub-pixel4and each of the touch lead6and the light-transmitting aperture3, and it is easy to occur that the touch lead6shields the sub-pixel4, or the sub-pixel4shields the light-transmitting aperture3. When the line width of the touch lead6decreases, the resistance of the touch lead6increases, resulting in a greater degree of attenuation of the touch detection signal. In the embodiments of the present disclosure, since the touch lead6and the light-transmitting aperture3are located in different sub-pixel spacing regions7, a sufficient distance can be achieved between the sub-pixel4and each of the touch lead6and the light-transmitting aperture3. Even if the positions of touch lead6and light-transmitting aperture3are deviated, the touch lead6will not shield the sub-pixel4, or the sub-pixel4will not shield the light-transmitting aperture3, and there is no need to reduce the line width of the touch lead6.

In other words, with the above configuration, while ensuring a sufficient distance between the sub-pixel4and each of the touch lead6and the light-transmitting aperture3, a distance between adjacent sub-pixels4can be reduced, so that the pixel density can be increased, or the line width of the touch lead6is increased to reduce the resistance of the touch lead6to optimize the touch performance.

Inside the display panel, the sub-pixel4, the touch lead6, and the light-transmitting aperture3are located in different layers, respectively. The distance between any two of the touch lead6, the light-transmitting aperture3, and the sub-pixel4in the present disclosure refers to a distance between the orthographic projections of the any two on a plane of the display panel. Exemplarily, the distance between the touch lead6and the light-transmitting aperture3as described above refers to a distance between an orthographic projection of the touch lead6on the plane of the display panel and an orthographic projection of the light-transmitting aperture3on the plane of the display panel.

In some embodiments of the present disclosure, in a case where the touch lead6and the light-transmitting aperture3are located in different sub-pixel spacing regions7, the extending manner of the touch lead6can be determined flexibly according to the arrangement manner of the sub-pixels4. For example, referring toFIG.3, when the sub-pixels4are not aligned in the second direction Y and/or the third direction Z, the touch lead6can extend in a broken line. It can be understood that the touch lead6extending in the broken line herein refers to an overall extending direction of the touch lead6, that is, from a top view of the display panel, a single touch lead6as a whole extends in a vertical broken line.FIG.5is a schematic diagram of touch leads6according to some embodiments of the present disclosure. In some embodiments, as shown inFIG.5, when the sub-pixels4are aligned with each other in the second direction Y and/or the third direction Z, the touch lead6can extend in a straight line.

In some embodiments of the present disclosure, the touch electrodes5and the touch leads6can be arranged in different layers. For example, referring toFIG.2andFIG.3, the touch lead6can be located at a side of the touch electrodes5away from the light-emitting direction of the display panel, and in this case, the touch electrodes5in the display panel can be electrode blocks with a same shape and area.FIG.6is a schematic diagram showing layer positions of the touch electrodes5and the touch leads6according to some embodiments of the present disclosure. In some embodiments, as shown inFIG.6, the touch electrodes5and the touch leads6can be arranged in a same layer, and in this case, the touch lead6are extend from a side of the touch electrode5. When the touch electrodes5and the touch leads6are provided in a same layer, in order to bypass the touch leads6, the touch electrodes5arranged along the extending direction of the touch lead6can have different sizes.

FIG.7is a schematic diagram showing arrangement positions of light-transmitting apertures3according to some embodiments of the present disclosure. In some embodiments, as shown inFIG.7, the sub-pixels4include first-type sub-pixel10located in the fingerprint recognition region2. Multiple light-transmitting apertures3are provided in at least one sub-pixel spacing region7adjacent to the first-type sub-pixel10.

With such configuration, the distribution density of the light-transmitting apertures3in the fingerprint recognition region2is relatively large, and at least one light-transmitting aperture3is arranged next to each first-type sub-pixel10in the fingerprint recognition region2, so that after the light emitted by the first-type sub-pixel10is reflected back by the finger, it can be incident to the light sensor9through the light-transmitting aperture3beside it, thereby increasing the amount of detection light collected by the optical sensor.

FIG.8is a schematic diagram showing arrangement positions of light-transmitting apertures3according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.8, the sub-pixel4include a first-type sub-pixel10located in the fingerprint recognition region2, And the sub-pixel spacing regions7include a first-type sub-pixel spacing region11. The first-type sub-pixel spacing region11is located between two first-type sub-pixels10adjacent to each other in the first direction X. The is located in at least one first-type sub-pixel spacing region11.

With such configuration, the light-transmitting aperture3is only located between two first-type sub-pixels10adjacent to each other in a direction. That is, the light-transmitting aperture3is provided at a side of the first-type sub-pixels10only in the first direction X, or the light-transmitting apertures3are provided at two side of the first-type sub-pixels10only in the first direction X. In this case, the light-transmitting apertures3in the fingerprint recognition region2are dispersed more uniformly, and it is avoided that the light-transmitting apertures3distributed beside a first-type sub-pixel10are arranged excessive densely while ensuring a high distribution density of the light-transmitting apertures3, thereby avoiding the mutual interference of the detection light emitted through the adjacent light-transmitting apertures3.

FIG.9is a schematic diagram showing arrangement positions of light-transmitting apertures3according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.9, the display panel includes multiple pixel groups12arranged along a second direction Y. The pixel group12includes multiple sub-pixels4arranged along a third direction Z. The second direction Y intersects with the third direction Z. The sub-pixels4in two adjacent pixel groups12can be arranged in a staggering manner in the second direction Y.

The display region1includes pixel group spacing regions13. The pixel group spacing region13is located between the sub-pixels4of two adjacent pixel groups12. The pixel group spacing regions13include first-type pixel group spacing regions14and second-type pixel group spacing regions15. The touch lead6is located in the first-type pixel group spacing region14. The light-transmitting aperture3is located in the second-type pixel group spacing region15. With such configuration, the touch leads6and the light-transmitting apertures3are located in different pixel group spacing regions13respectively. That is, the touch lead6and the light-transmitting aperture3occupy different columns. In this way, on the premise that the touch lead6is far away from the light-transmitting aperture3, the touch lead6and the light-transmitting aperture3are arranged more regularly.

In some embodiments, referring toFIG.9again, the first-type pixel group spacing regions14and the second-type pixel group spacing regions15are alternately arranged along the second direction Y. In this case, the touch lead6and the light-transmitting aperture3occupy different columns and are arranged in a staggered manner, and there is one first-type pixel group spacing region14between any two adjacent second-type pixel group spacing regions15, so that it is avoided that the multiple second-type pixel group spacing regions15are concentratedly arranged, thereby reducing the degree of difference in the amount of detected light collected by optical sensors at different positions.

In some embodiments, the second-type pixel group spacing regions15are arranged at equal intervals. That is, the distances between any two adjacent second-type pixel group spacing regions15are the same. In this case, the light-transmitting apertures3are distributed more uniformly in the whole fingerprint recognition region2, and the uniformity of the amount of detection light collected by the optical sensors at different positions of the fingerprint recognition region2is better.

In some embodiments, in order to improve the distribution uniformity of the light-transmitting apertures3in the second-type pixel group spacing region15, the light-transmitting apertures3can also be arranged at equal intervals in the second-type pixel group spacing region15. That is, the light-transmitting apertures3can be arranged at equal intervals along the extending direction of the second-type pixel group spacing region15. The distances between any two adjacent light-transmitting apertures3in the second-type pixel group spacing region15are the same.

FIG.10is a schematic diagram showing arrangement positions of light-transmitting apertures3according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.10, the pixel groups12include a first pixel group16and a second pixel group17that are arranged alternately along the second direction Y. The first pixel group16includes first sub-pixels18and second sub-pixels19arranged alternately along the third direction Z. The second pixel group17includes multiple third sub-pixels20arranged along the third direction Z. In the second direction Y, the third sub-pixel20is not aligned with the first sub-pixel18or the second sub-pixel19.

The light-transmitting aperture3is located between the third sub-pixel20and the first sub-pixel18adjacent to the third sub-pixel20in the first direction X, and/or, located between the third sub-pixel20and the second sub-pixel19adjacent to the third sub-pixel20in the first direction X. The first direction X intersects with the second direction Y and the third direction Z.

The first sub-pixel18can be a red sub-pixel configured to emit red light, the second sub-pixel19can be a blue sub-pixel configured to emit blue light, and the third sub-pixel20can be a green sub-pixel configured to emit green light.

It can be understood that the luminous efficiency of sub-pixels emitting light of different colors are different due to the influence of the characteristics of the light-emitting material. Generally speaking, the luminous efficiency of the green sub-pixel is higher than the luminous efficiency of the red sub-pixel, and the luminous efficiency of the red sub-pixel is higher than the luminous efficiency of the blue sub-pixel. If the light-transmitting aperture3is arranged between two adjacent sub-pixels emitting light of a same color, and if the luminous efficiency of the sub-pixel of this color is high, the brightness of the reflected light of this color is excessively high to exceed the fingerprint recognition ability. However, if the luminous efficiency of the color sub-pixel is low, the brightness of the reflected light of this color is too low to be recognized.

In view of the above, in the embodiments of the present disclosure, based on the arrangement of the sub-pixels4and the arrangement positions of the light-transmitting apertures3, the light-transmitting aperture3is located between two adjacent sub-pixels of different colors, and after light emitted from the two sub-pixels of different colors is reflected back by the finger, the brightness of the reflected light of the two colors can be neutralized, so that the brightness of the reflected light is prevented from being excessively high or excessively low, thereby optimizing the recognition effect.

FIG.11is a schematic diagram showing arrangement positions of touch leads6according to some embodiments of the present disclosure, andFIG.12is a schematic diagram showing arrangement positions of touch leads6according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.11andFIG.12, the display region1includes a first region21and a second region22that are adjacent to each other in the second direction Y. The first region21includes a first lead region23and a first non-lead region24that are arranged along the second direction Y. The second region22includes a second lead region25and a second non-lead region26that are arranged along the second direction Y. The first non-lead region24and the second non-lead region26are adjacent to each other.

The touch lead6electrically connected to the touch electrode5in the first region21is located in the first lead region23. The touch lead6electrically connected to the touch electrode5in the second region22is located in the second lead region25. A part of the fingerprint recognition region2is located in the first non-lead region24, and another part of the fingerprint recognition region2is located in the second non-lead region26.FIG.11shows a situation where parts of the fingerprint recognition region2are located in the first non-lead region24, the second non-lead region26, the first lead region23, and the second lead region25, respectively.FIG.12shows a part of the fingerprint recognition region2is located in the first non-lead region24and the remaining part of the fingerprint recognition region2is located in the second non-lead region26.

With such configuration, the touch leads6in the first region21are concentrated in the first lead region23away from the second region22, and the touch leads6in the second region22are concentrated in the second lead region25away from the first region21, so that no touch leads6extend in the first non-lead region24and second non-lead region26that are adjacent to each other. When a part of the fingerprint recognition region2is located in the first non-lead region24and another part of the fingerprint recognition region2is located in the second non-lead region26, the number of the touch leads6penetrating the fingerprint recognition region2can be reduced, so as to not only make the touch leads6shield the fingerprint recognition region2less to improve the light transmittance of the fingerprint recognition region2to enable more detection light to enter the light-transmitting aperture3through the fingerprint recognition region2, but also to increase the number of sub-pixel spacing regions7where the light-transmitting apertures3is provided in the fingerprint recognition region2. For example, when a part of the fingerprint recognition region2is located in the first non-lead region24and the remaining part of the fingerprint recognition region2is located in the second non-lead region26, there are no touch leads6passing through the fingerprint recognition region2. In this case, all sub-pixel spacing regions7in the fingerprint recognition region2each can be provided with the light-transmitting apertures3, thereby achieving a maximum distribution density of the light-transmitting apertures3.

FIG.13is a schematic diagram showing arrangement positions of touch leads6according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.13, the touch electrodes5include a first touch electrode27and a second touch electrode28. The first touch electrode27is located in a first region21, and overlaps with the fingerprint recognition region2in a direction perpendicular to the plane of the display panel. A side of the first touch electrode27away from the fingerprint recognition region2is electrically connected to the touch lead6. The second touch electrode28is located in the second region22, and overlaps with the fingerprint recognition region2in the direction perpendicular to the plane of the display panel. A side of the second touch electrode28away from the fingerprint recognition region2is electrically connected to the touch lead6.

Taking the first touch electrode27as an example, referring toFIG.13again, the side of the first touch electrode27away from the fingerprint recognition region2refers to: in a direction parallel to the plane of the display panel, the first touch electrode27includes a first side60and a second side61that are opposite to each other in the second direction Y. The first side60is a side of the first touch electrode27that overlaps with the fingerprint recognition region2. The second side61that does not overlap with the fingerprint recognition region2is a side of the first touch electrodes27away from the fingerprint recognition region2.

In the above configuration, the touch lead6electrically connected to the first touch electrode27extends from a side of the first touch electrode27away from the fingerprint recognition region2, and the touch lead6electrically connected to the second touch electrode28extends from a side of the second touch electrode28away from the fingerprint recognition region2, so that this touch leads6does not overlap with the fingerprint recognition region2, which will neither shield the fingerprint recognition region2nor occupy the sub-pixel spacing region7in the fingerprint recognition region2.

In the above configuration, the touch electrode5and the touch lead6can be arranged in a same layer or in different layers.

In some embodiments, referring toFIG.13again, a distance L1between the first lead region23and the second lead region25is greater than or equal to a maximum length L2of the fingerprint recognition region2in the second direction Y. That is, a part of the fingerprint recognition region2is located in the first non-lead region24and the remaining part of the fingerprint recognition region2is located in the second non-lead region26. The touch lead6bypasses the fingerprint recognition region2. The touch lead6does not overlap with the fingerprint recognition region2. Therefore, not only the light transmittance of the fingerprint recognition region2and the distribution density of the light-transmitting apertures3are improved, but also the touch leads6have a same length in the first lead region23and the second lead region25while preventing the touch lead6from shielding the fingerprint recognition region2, thereby making touch lead6to carry a same load.

FIG.14is a schematic diagram of touch leads6according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.14, the touch leads6include a first touch lead29and a second touch lead30. The first touch lead29and the second touch lead30are located in the first lead region23. The first touch lead29is located at a side of the second touch lead30close to the first non-lead region24. The first touch lead29has a smaller length than the second touch lead30. A part of the fingerprint recognition region2is located in the first lead region23. In some other embodiments, the touch leads6include a third touch lead31and a fourth touch lead32. The third touch lead31and the fourth touch lead32are located in the second lead region25. The third touch lead31is located at a side of the fourth touch lead32close to the second non-lead region26. The third touch lead31has a smaller length than the fourth touch lead32. A part of the fingerprint recognition region2is located in the second lead region25.

Based on the above configuration of the touch leads6, a distance between the second touch lead30and the fourth touch lead32is greater than a distance between the first touch lead29and the third touch lead31, so that a larger area that is not passed through by the touch lead6is formed between the second control lead30and the fourth touch lead32. Based on such structure, the fingerprint recognition region2can be located between the second touch lead30and the fourth touch lead32. On the premise that the touch lead6does not pass through the fingerprint recognition region2, an area of the fingerprint recognition region2can be set larger. For example, the touch electrode5includes a first edge and a second edge opposite to each other in the second direction Y. A touch size refers to a distance between first edges of two adjacent touch electrodes5. For example, a current touch size L3is generally about 4 mm, and a total width L4occupied by the touch lead6in the first lead region23or in the second lead region25is about 1 mm. With such design, a maximum length L2of the fingerprint recognition region2in the second direction Y can be increased to be greater than 6 mm.

In some embodiments, referring toFIG.14again, in the first region21, lengths of the touch leads6decrease along a direction from the first lead region23to the first non-lead region24; and/or, in the second region22, the lengths of the touch leads6decrease along a direction from the second lead region25to the second non-lead region26, so that the area of the fingerprint recognition region2can be set larger on the premise that the touch lead6does not pass through the fingerprint recognition region2. In some embodiments, as shown inFIG.14, in the third direction Z, a part of the fingerprint recognition region2overlaps with the first touch lead29located in the first lead region23; and/or in the third direction Z, a part of the fingerprint recognition region2overlaps with the third touch lead31located in the second lead region25.

FIG.15is a schematic diagram showing arrangement positions of touch leads6according to another embodiment of the present disclosure, andFIG.16is a schematic diagram showing arrangement positions of touch leads6according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.15andFIG.16, the display region1includes at least one third region33and at least one fourth region34. The third region33is located at a side of the first region21away from the second region22. The fourth region34is located at a side of the second region22away from the first region21.

The third region33includes a third lead region35and a third non-lead region36that are arranged along a second direction Y. A direction from the third lead region35to the third non-lead region36is same as a direction from the first lead region23to the first non-lead region24. The touch leads6in the third region33are located in the third lead region35. The fourth region34includes a fourth lead region37and a fourth non-lead region38that are arranged along the second direction Y. A direction from the fourth lead region37to the fourth non-lead region38is same as a direction from the second lead region25to the second non-lead region26. The touch leads6in the fourth region34are located in the fourth lead region37.

With such configuration, for the first region21and the third region33that are located at one side of the fingerprint recognition region2, the touch leads6in the first region21are located at a side of the first region21away from the second region22, and the touch leads6in the third region33are located at a side of the third region33away from the second region22. For the second region22and the fourth region34that are located at another side of the fingerprint recognition region2, the touch leads6in the second region22are located at a side of the second region22away from the first region21, and the touch leads6in the fourth region34are located at a side of the fourth region34away from the first region21. The touch leads6at two sides of the fingerprint recognition region26tend to be symmetrically distributed, and the arrangement of the touch leads6is more regular. With such configuration, the distributions of the touch leads6in different regions are consistent, thereby improving the reflection uniformity of the touch leads6in different regions for ambient light.

FIG.17is a schematic diagram showing arrangement positions of touch leads6according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.17, the display region1has a first central axis39. In order to improve the regular arrangement of the touch leads6and the uniformity of reflection, the touch leads6can be symmetrical about the first central axis39.

In some embodiments, referring toFIG.15andFIG.16again, the fingerprint recognition region2has a second central axis40. In order to improve a regular arrangement of the touch leads6and uniformity of reflection, the first touch leads6in the first lead region23are symmetrically arranged with the touch leads6in the second lead region25about the second central axis40.

In some embodiments of the present disclosure, the second central axis40of the fingerprint recognition region2can coincide with the first central axis39of the display region1.

FIG.18is a schematic diagram showing arrangement positions of light-transmitting apertures3according to another embodiment of the present disclosure,FIG.19is a schematic diagram showing arrangement positions of light-transmitting apertures3according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.18andFIG.19, the display panel includes first pixel groups16and second pixel groups17that are alternately arranged along the second direction Y. The first pixel group16includes first sub-pixels18and second sub-pixels19that are alternately arranged along the third direction Z. The second pixel group17includes multiple third sub-pixels20that are arranged along the third direction Z. The second direction Y intersects with the third direction Z. In the second direction Y, the third sub-pixels20are not aligned with the first sub-pixels18or the second sub-pixels19.

Referring toFIG.18, the light-transmitting aperture3is located in the sub-pixel spacing region7adjacent to the third sub-pixel20in the second direction Y and the third direction Z. In some embodiments, referring toFIG.19, the light-transmitting apertures3are located in the sub-pixel spacing region7adjacent to the third sub-pixel20in the first direction X and the sub-pixel spacing region7adjacent to the third sub-pixel20in the fourth direction W, respectively. The first direction X intersects with the second direction Y and the third direction Z. The fourth direction W intersects with the second direction Y and the third direction Z.

When the touch lead6does not pass through the fingerprint recognition region2, the distribution density of the light-transmitting apertures3in the fingerprint recognition region2can be larger. When the light-transmitting apertures3are arranged in the above manner, the distribution of the light-transmitting apertures3in the fingerprint recognition region2is more uniform while ensuring a larger distribution density of the light-transmitting apertures3, thereby achieving a better uniformity of the amount of detection light collected by the optical sensors at different positions.

In some embodiments, referring toFIG.4again, the touch electrode5includes a first hollow portion41. In the direction perpendicular to the plane of the display panel, the first hollow portion41overlaps with the sub-pixel4, so that the touch electrode5exposes the sub-pixel4and does not shield the sub-pixel4, thereby improving the luminous efficiency of the display panel. The touch electrode5can be made of a light-transmitting conductive material such as ITO, or can be made of a metal material with low resistance.

FIG.20is a schematic diagram of touch electrodes5according to another embodiment of the present disclosure. In some embodiments, as shown inFIG.20, the touch electrode5includes a first-type touch electrode42located in the fingerprint recognition region2. At least one first-type touch electrode42includes a second hollow portion43. The second hollow portion43overlaps with the light-transmitting aperture3in the direction perpendicular to the plane of the display panel, so that the touch electrode5exposes the light-transmitting apertures3to make the touch electrode5shield the light-transmitting aperture3less, thereby increasing the amount of detection light entering the optical sensor through the light-transmitting aperture3, and improving the fingerprint recognition accuracy.

The present disclosure provides a display apparatus.FIG.21is a schematic diagram of a display apparatus according to some embodiments of the present disclosure. As shown inFIG.21, the display apparatus includes the display panels100mentioned above. The specific structure of the display panel100has been described in detail in the above embodiments, and will not be repeated herein. The display apparatus shown inFIG.21is only a schematic illustration, and the display apparatus can be any electronic device with a display function, such as a mobile phone, a tablet computer, a laptop computer, an electronic paper book, or a television.

The above are merely some embodiments of the present disclosure, which are not used to limit the present disclosure. Any modification, equivalent replacement, improvement, and the like made within the principles of the present disclosure shall fall within the protection scope of the present disclosure.

Finally, it should be noted that the technical solutions of the present disclosure are illustrated by the above embodiments, but not intended to limit thereto. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art can understand that the present disclosure is not limited to the specific embodiments described herein, and can make various obvious modifications, readjustments, and substitutions without departing from the scope of the present disclosure.