CN110376788B

CN110376788B - Display panel and display device

Info

Publication number: CN110376788B
Application number: CN201910702996.3A
Authority: CN
Inventors: 周婷; 韩旭; 林嘉民
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2022-04-05
Anticipated expiration: 2039-07-31
Also published as: CN110376788A

Abstract

The invention provides a display panel and a display device. The display panel includes: the array substrate and the color film substrate are oppositely arranged; the fingerprint identification sensor is positioned on one side of the array substrate close to the color film substrate; the first black matrix, the first planarization layer and the first shading column are positioned on one side, close to the array substrate, of the color film substrate; the first black matrix comprises a first through hole, and the orthographic projection of the first through hole on the color film substrate is overlapped with the orthographic projection of the fingerprint identification sensor on the color film substrate; at least part of the first shading column is embedded in the first planarization layer; the orthographic projection of the first light-shielding column on the color film substrate surrounds the orthographic projection of the first through hole on the color film substrate, or one edge of the orthographic projection of the first light-shielding column on the color film substrate is superposed with the edge of the first through hole on the color film substrate. In the invention, the first shading column blocks stray light on one side of the first shading column, which is far away from the first through hole, from being incident on the fingerprint identification sensor, so that the sensitivity of the fingerprint identification sensor is improved.

Description

Display panel and display device

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

Fingerprints are inherent to everyone, and with the development of science and technology, a variety of display devices with fingerprint identification functions, such as mobile phones, tablet computers, intelligent wearable devices and the like, appear in the market. Before a user operates the display device with the fingerprint identification function, the user can carry out authority verification only by touching the display device with a finger, and the authority verification process is simplified. With the increase of fingerprint identification application scenes, the demand on fingerprint identification sensitivity is gradually increased. However, in the prior art, the sensitivity of fingerprint recognition is low.

[ summary of the invention ]

In order to solve the above technical problems, the present invention provides a display panel and a display device.

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

the array substrate and the color film substrate are oppositely arranged;

the fingerprint identification sensor is positioned on one side of the array substrate close to the color film substrate;

the first black matrix, the first planarization layer and the first shading column are positioned on one side, close to the array substrate, of the color film substrate;

the first black matrix comprises a first through hole, and the orthographic projection of the first through hole on the color film substrate is overlapped with the orthographic projection of the fingerprint identification sensor on the color film substrate;

at least part of the first shading column is embedded in the first planarization layer;

the orthographic projection of the first light-shielding column on the color film substrate surrounds the orthographic projection of the first through hole on the color film substrate, or one edge of the orthographic projection of the first light-shielding column on the color film substrate is superposed with the edge of the first through hole on the color film substrate.

Optionally, the first planarization layer includes a first opening, the first opening includes a first hollow-out region and a first non-hollow-out region surrounding the first hollow-out region, the first light-shielding pillar is located in the first non-hollow-out region, and the first hollow-out region penetrates through the first planarization layer along a thickness of the first planarization layer.

Optionally, the first planarization layer includes a first groove, the first groove includes a first groove, and the first light shielding pillar is embedded in the first groove;

the first grooves penetrate at least a part of the first planarizing layer in a direction from the first planarizing layer to the first black matrix.

Optionally, the first nail light shielding column fills the first nail groove.

Optionally, the first groove penetrates through the first planarization layer in a direction from the first planarization layer to the first black matrix, the first groove includes a first concave portion close to the first black matrix and a second concave portion far from the first black matrix, and the first shading column fills the first concave portion and does not fill the second concave portion.

Optionally, the display panel further includes a first second light-shielding column located on one side of the first black matrix away from the color film substrate;

the first groove also comprises a first second groove, and the first second shading column is embedded in the first second groove;

the first second groove penetrates through the first planarization layer along the direction from the first planarization layer to the first black matrix;

the first second groove comprises a third concave part close to the first black matrix and a fourth concave part far away from the first black matrix, and the first second light shielding column is filled with the third concave part and is not filled with the fourth concave part.

Optionally, the display panel further comprises: the second black matrix is positioned on one side, close to the array substrate, of the first black matrix;

the second black matrix comprises a second through hole, and the orthographic projection of the second through hole on the color film substrate is overlapped with the orthographic projection of the first through hole on the color film substrate.

Optionally, the first light-shielding pillar and the second black matrix are formed by using the same material, the first light-shielding pillar is formed by N times of processes, N is an integer, and N is greater than or equal to 1 and less than or equal to 3.

Optionally, the display panel further comprises: the second planarization layer and the second shading column are positioned on one side, away from the color film substrate, of the first black matrix;

at least part of the second shading column is embedded in the second planarization layer;

and the orthographic projection of the second shading column on the color film substrate surrounds the orthographic projection of the second through hole on the color film substrate.

Optionally, the second planarization layer includes a second opening, the second opening includes a second hollow-out region and a second non-hollow-out region surrounding the second hollow-out region, the second light-shielding pillar is located in the second non-hollow-out region, and the second hollow-out region penetrates through the second planarization layer along a thickness of the second planarization layer.

Optionally, the second planarization layer includes a second groove, and the second light-shielding pillar is embedded in the second groove;

the second groove at least partially penetrates the second planarization layer in a direction from the second planarization layer to the second black matrix.

Optionally, the second light-shielding column fills the second groove;

or, the second groove penetrates through the second planarization layer along the direction from the second planarization layer to the second black matrix, the second groove includes a fifth concave portion close to the second black matrix and a sixth concave portion far from the second black matrix, and the second light-shielding pillar fills the fifth concave portion and does not fill the sixth concave portion.

Optionally, the display panel further comprises: the third black matrix is positioned on one side, close to the array substrate, of the second black matrix;

the third black matrix comprises a third through hole, and the orthographic projection of the third through hole on the color film substrate is overlapped with the orthographic projection of the first through hole on the color film substrate;

the third planarization layer and the third light-shielding column are positioned on one side, close to the color film substrate, of the array substrate;

at least part of the third light-shielding column is embedded in the third planarization layer;

and the orthographic projection of the third shading column on the color film substrate surrounds the orthographic projection of the third through hole on the color film substrate.

Optionally, the display panel further comprises: the liquid crystal layer is positioned between the array substrate and the color film substrate;

the first light-shielding pillar penetrates the first planarization layer, and the first light-shielding pillar extends into or penetrates the liquid crystal layer.

In a second aspect, the present invention provides a display device comprising the display panel.

In the invention, the fingerprint identification sensor is positioned on one side of the array substrate close to the color film substrate. The fingerprint identification sensor is used for detecting fingerprints on the surface of one side, close to the color film substrate, of the display panel. The display panel emits light towards one side, far away from the array substrate, of the color film substrate, the finger reflects the light emitted by the display panel towards one side, close to the array substrate, of the color film substrate, and the fingerprint identification sensor receives and detects the light reflected by the finger. The first black matrix is positioned on one side of the color film substrate close to the array substrate. The area outside the first through hole in the first black matrix blocks stray light rays from entering the fingerprint identification sensor. The first through-hole in the first black matrix allows light reflected from a finger to be incident on the fingerprint sensor. The orthographic projection of the first through hole on the color film substrate is overlapped with the orthographic projection of the fingerprint identification sensor on the color film substrate. The first through hole collimates the light reflected by the finger to enter the fingerprint sensor. The first planarization layer is located on one side, away from the color film substrate, of the first black matrix, the first shading column is embedded in the first groove of the first planarization layer, the orthographic projection of the first shading column on the color film substrate surrounds the orthographic projection of the first through hole on the color film substrate, or one edge of the orthographic projection of the first shading column on the color film substrate is overlapped with the edge of the first through hole on the color film substrate. When a finger reflects light emitted by the display panel towards one side of the color film substrate close to the array substrate, the light reflected by the finger enters the fingerprint identification sensor through the first through hole; meanwhile, stray light on one side, away from the first through hole, of the first shading column cannot penetrate through the first shading column and enter the fingerprint identification sensor. That is, the fingerprint recognition sensor receives and detects the light reflected by the finger, and does not receive the stray light on the side of the first nail shielding column away from the first through hole. Therefore, the fingerprint identification sensor is not affected by stray light rays of one side, far away from the first through hole, of the first nail light shielding column, and fingerprint information is accurately acquired according to light rays reflected by the fingers. Therefore, the first shading column blocks stray light rays, far away from one side of the first through hole, of the first shading column from entering the fingerprint identification sensor, and therefore the sensitivity of the fingerprint identification sensor is improved.

[ description of the drawings ]

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

FIG. 1 is a schematic diagram of a display panel in the prior art;

FIG. 2 is a schematic structural diagram of a display panel according to an embodiment of the 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 and 6 are schematic structural diagrams of another display panel according to an embodiment of the invention;

fig. 7 and 8 are schematic structural diagrams of another display panel according to an embodiment of the invention;

fig. 9 and 10 are schematic structural diagrams of another display panel according to an embodiment of the invention;

fig. 11 and 12 are schematic structural diagrams of another display panel according to an embodiment of the invention;

FIG. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a display device according to an embodiment of the invention.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, etc. may be used herein to describe devices in accordance with embodiments of the present invention, these devices should not be limited by these terms. These terms are only used to distinguish one device from another. For example, a first device may also be referred to as a second device, and similarly, a second device may also be referred to as a first device, without departing from the scope of embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a display panel in the prior art.

As shown in fig. 1, in the prior art, a display panel 100 includes an array substrate 110, a color filter substrate 120, a fingerprint sensor 130, a black matrix 140, and a planarization layer 150. The black matrix 140 includes collimating vias 141. Although the black matrix 140 blocks stray light from the side of the black matrix 140 away from the array substrate 110, the stray light between the black matrix 140 and the array substrate 110 may still be incident and interfere with the fingerprint sensor 130.

Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention.

As shown in fig. 2, the display panel 200 includes: the array substrate 211 and the color film substrate 212 are arranged oppositely; the fingerprint identification sensor 220 is positioned on one side of the array substrate 211 close to the color film substrate 212; the first black matrix 231, the first planarization layer 241 and the first light-shielding column 251A are located on one side of the color film substrate 212 close to the array substrate 211; the first black matrix 231 includes a first through hole 261, and an orthogonal projection of the first through hole 261 on the color filter substrate 212 overlaps with an orthogonal projection of the fingerprint identification sensor 220 on the color filter substrate 212; at least a portion of the first light-shielding pillar 251A is embedded in the first planarization layer 241; the orthographic projection of the first light-shielding post 251A on the color film substrate 212 surrounds the orthographic projection of the first through hole 261 on the color film substrate 212, or one edge of the orthographic projection of the first light-shielding post 251A on the color film substrate 212 is superposed with the edge of the first through hole 261 on the color film substrate 212.

In the embodiment of the present invention, the fingerprint sensor 220 is located on one side of the array substrate 211 close to the color filter substrate 212. The fingerprint sensor 220 is used for detecting fingerprints on the surface of the display panel 200 close to the color film substrate 212. The display panel 200 emits light toward the color film substrate 212 away from the array substrate 211, the finger reflects the light emitted from the display panel 200 toward the color film substrate 212 close to the array substrate 211, and the fingerprint sensor 220 receives and detects the light reflected by the finger. The first black matrix 231 is located on the color filter substrate 212 near the array substrate 211. The stray light rays are blocked from being incident on the fingerprint recognition sensor 220 by the region outside the first through hole 261 in the first black matrix 231. The first through hole 261 in the first black matrix 231 allows light reflected by a finger to be incident on the fingerprint recognition sensor 220. The orthographic projection of the first through hole 261 on the color film substrate 212 is overlapped with the orthographic projection of the fingerprint identification sensor 220 on the color film substrate 212. The first through hole 261 collimates the light reflected from the finger to be incident on the fingerprint recognition sensor 220. The first planarization layer 241 is located on one side of the first black matrix 231, which is far away from the color film substrate 212, the first light-shielding pillar 251A is embedded in the first groove 271A of the first planarization layer 241, an orthographic projection of the first light-shielding pillar 251A on the color film substrate 212 surrounds an orthographic projection of the first through hole 261 on the color film substrate 212, that is, an edge of the first light-shielding pillar 251A, which is close to the first through hole 261 in the orthographic projection of the first light-shielding pillar 251A on the color film substrate 212, does not coincide with an edge of the first through hole 261, which is close to the first light-shielding pillar 251A in the orthographic projection of the first through hole 261 on the color film substrate 212; or one edge of the orthographic projection of the first light-shielding column 251A on the color film substrate 212 coincides with the edge of the first through hole 261 on the color film substrate 212, that is, the edge of the orthographic projection of the first light-shielding column 251A on the color film substrate 212, which is close to the first through hole 261, coincides with the edge of the orthographic projection of the first through hole 261 on the color film substrate 212, which is close to the first light-shielding column 251A. When a finger reflects light emitted by the display panel 200 towards one side of the color film substrate 212 close to the array substrate 211, the light reflected by the finger enters the fingerprint identification sensor 220 through the first through hole 261; meanwhile, stray light on the side of the first light-shielding post 251A away from the first through hole 261 is not transmitted through the first light-shielding post 251A and enters the fingerprint sensor 220. That is, the fingerprint recognition sensor 220 receives and detects the light reflected from the finger, while not receiving the stray light from the first a-ray shielding cylinder 251A at the side away from the first through hole 261. Accordingly, the fingerprint recognition sensor 220 is not affected by the stray light from the first light shielding cylinder 251A far from the first through hole 261, and accurately obtains fingerprint information according to the light reflected by the finger. Therefore, the first light-shielding pillar 251A blocks the stray light of the first light-shielding pillar 251A far from the first through hole 261 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved.

Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 3, the first planarization layer 241 includes a first opening 291, the first opening 291 includes a first hollow-out region 291A and a first non-hollow-out region 291B surrounding the first hollow-out region 291A, the first light-shielding pillar 251A is located in the first non-hollow-out region 291B, and the first hollow-out region 291A penetrates through the first planarization layer 241 along a thickness of the first planarization layer 241.

In the embodiment of the present invention, the first planarization layer 241 includes a first opening 291, and the first opening 291 includes a first hollow area 291A. The light reflected by the finger is incident on the fingerprint sensor 220 through the first hollow area 291A. Accordingly, the incidence rate of the light reflected by the finger to the fingerprint recognition sensor 220 is increased, so that the sensitivity of the fingerprint recognition sensor 220 is increased. The first opening 291 further includes a first non-hollow area 291B surrounding the first hollow area 291A, the first light-shielding pillar 251A is located in the first non-hollow area 291B, and the first hollow area 291A penetrates through the first planarization layer 241 along the thickness of the first planarization layer 241. When a finger reflects light emitted by the display panel 200 towards one side of the color film substrate 212 close to the array substrate 211, the light reflected by the finger enters the fingerprint identification sensor 220 through the first through hole 261; meanwhile, stray light on the side of the first light-shielding post 251A away from the first through hole 261 is not transmitted through the first light-shielding post 251A and enters the fingerprint sensor 220. That is, the fingerprint recognition sensor 220 receives and detects the light reflected from the finger, while not receiving the stray light from the first a-ray shielding cylinder 251A at the side away from the first through hole 261. Accordingly, the fingerprint recognition sensor 220 is not affected by the stray light from the first light shielding cylinder 251A far from the first through hole 261, and accurately obtains fingerprint information according to the light reflected by the finger. Therefore, the first light-shielding pillar 251A blocks the stray light of the first light-shielding pillar 251A far from the first through hole 261 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved. Here, since the first planarizing layer 241 is provided with the first hollowed-out area 291A, the incidence rate of the light reflected by the finger to the fingerprint recognition sensor 220 is increased, so that the sensitivity of the fingerprint recognition sensor 220 is high.

Fig. 4 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 2 and 4, the first planarization layer 241 includes a first groove 271, the first groove 271 includes a first recess 271A, and the first light-shielding pillar 251A is embedded in the first recess 271A; the first nail groove 271A penetrates at least a part of the first planarization layer 241 in a direction from the first planarization layer 241 to the first black matrix 231.

In the embodiment of the present invention, the first nail groove 271A may penetrate a portion of the first planarization layer 241 in a direction from the first planarization layer 241 to the first black matrix 231, the depth of the first nail groove 271A being less than the thickness of the first planarization layer 241; the first nail groove 271A may penetrate all of the first planarization layer 241, and the depth of the first nail groove 271A is equal to the thickness of the first planarization layer 241. The first shading column 251A is embedded in the first groove 271A. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, stray light on the side of the first light-shielding post 251A away from the first through hole 261 is not transmitted through the first light-shielding post 251A and enters the fingerprint sensor 220. That is, the fingerprint recognition sensor 220 receives and detects the light reflected from the finger, while not receiving the stray light from the first a-ray shielding cylinder 251A at the side away from the first through hole 261. Accordingly, the fingerprint recognition sensor 220 is not affected by the stray light from the first light shielding cylinder 251A far from the first through hole 261, and accurately obtains fingerprint information according to the light reflected by the finger. Therefore, the first light-shielding pillar 251A blocks the stray light of the first light-shielding pillar 251A far from the first through hole 261 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved. Here, the first light-shielding pillar 251A is embedded in the first recess 271A, so that only a recess needs to be formed in the first planarization layer 241, and process variation is small.

Fig. 5 and 6 are schematic structural diagrams of another display panel according to an embodiment of the invention.

As shown in fig. 5 and 6, the first nail shade column 251A fills the first nail groove 271A.

In the embodiment of the invention, the first formazan groove 271A penetrates a portion of the first planarization layer 241 in the direction from the first planarization layer 241 to the first black matrix 231, and the first formazan light-shielding pillar 251A fills the first formazan groove 271A. The first light-shielding pillars 251A are embedded in a portion of the first planarization layer 241 away from the first black matrix 231. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, at a portion of the first planarization layer 241 far from the first black matrix 231, stray light of the first light-shielding pillar 251A far from the first through hole 261 side is not incident on the fingerprint recognition sensor 220 through the first light-shielding pillar 251A. Therefore, at a portion of the first planarization layer 241 far from the first black matrix 231, the first light-shielding pillar 251A blocks stray light of a side of the first light-shielding pillar 251A far from the first through hole 261 from being incident on the fingerprint recognition sensor 220, so that the sensitivity of the fingerprint recognition sensor 220 is improved. Here, the first nail shade column 251A fills the first nail groove 271A, and since the first nail groove 271A is filled with the first nail shade column 251A, the first nail shade column 251A can block more stray light of the first nail groove 271A far from the first through hole 261 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is higher.

Optionally, an orthographic projection of the edge of the first light-shielding column 251A close to the first through hole 261 and the edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212 coincide. When the first recess 271A penetrates through a portion of the first planarization layer 241 and the first light-shielding column 251A fills the first recess 271A, an edge of the first light-shielding column 251A close to the first through hole 261 coincides with an orthographic projection of an edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212, an incident angle range of a stray light of one side of the first light-shielding column 251A far from the first through hole 261, which bypasses the first light-shielding column 251A and enters the fingerprint identification sensor 220, is smaller, and a larger amount of stray light of one side of the first light-shielding column 251A far from the first through hole 261 cannot enter the fingerprint identification sensor 220 through the first light-shielding column 251A. At this time, the first light shielding column 251A blocks more stray light rays from entering the fingerprint sensor 220 at the side of the first light shielding column 251A away from the first through hole 261, so that the sensitivity of the fingerprint sensor 220 is improved.

Fig. 7 and 8 are schematic structural diagrams of another display panel according to an embodiment of the invention.

As shown in fig. 7 and 8, the first nail groove 271A penetrates the first planarization layer 241 in the direction from the first planarization layer 241 to the first black matrix 231, the first nail groove 271A includes a first concave portion 281 close to the first black matrix 231 and a second concave portion 282 distant from the first black matrix 231, and the first nail light-shielding pillar 251A fills the first concave portion 281 and does not fill the second concave portion 282.

In the embodiment of the present invention, the first formazan groove 271A penetrates the first planarization layer 241 in the direction from the first planarization layer 241 to the first black matrix 231, wherein the first formazan light-shielding pillar 251A fills the first concave portion 281 and does not fill the second concave portion 282. The first nail shade post 251A fills a portion of the first nail groove 271A adjacent to the first black matrix 231. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, at a portion of the first recess 271A near the first black matrix 231, stray light of the first light-shielding pillar 251A at a side far from the first through hole 261 is not incident on the fingerprint recognition sensor 220 through the first light-shielding pillar 251A. Therefore, at a portion of the first recess 271A near the first black matrix 231, the first light-shielding pillar 251A blocks stray light of a side of the first light-shielding pillar 251A away from the first through hole 261 from being incident on the fingerprint recognition sensor 220, so that the sensitivity of the fingerprint recognition sensor 220 is improved. Here, the first light-shielding pillar 251A fills the first recess 281 and does not fill the second recess 282, and the first light-shielding pillar 251A blocks stray light of a portion of the first recess 281 on a side away from the first through hole 261 from being incident on the fingerprint recognition sensor 220, and at the same time, the first light-shielding pillar 251A blocks stray light of a portion of the second recess 282 on a side away from the first through hole 261 from being incident on the fingerprint recognition sensor 220, so that the sensitivity of the fingerprint recognition sensor 220 is higher.

Optionally, an orthographic projection of the edge of the first light-shielding column 251A close to the first through hole 261 on the color film substrate 212 is located outside an orthographic projection of the edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212. The arrangement of the first light-shielding column 251A is not limited to the case that the orthographic projection of the edge of the first light-shielding column 251A close to the first through hole 261 and the orthographic projection of the edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212 are overlapped. Thus, the first nail shade post 251A is more flexible in arrangement.

Fig. 9 and 10 are schematic structural diagrams of another display panel according to an embodiment of the invention.

As shown in fig. 9 and 10, the display panel 200 further includes a first second light-shielding pillar 251B located on a side of the first black matrix 231 away from the color filter substrate 212; the first groove 271 further comprises a first second groove 271B, and the first second shading column 251B is embedded in the first second groove 271B; the first sub-groove 271B penetrates the first planarization layer 241 in a direction from the first planarization layer 241 to the first black matrix 231; the first pocket 271B includes a third recess 283 close to the first black matrix 231 and a fourth recess 284 far from the first black matrix 231, and the first second light-shielding pillar 251B fills the third recess 283 and does not fill the fourth recess 284.

In the embodiment of the invention, the first formazan groove 271A penetrates a portion of the first planarization layer 241 in the direction from the first planarization layer 241 to the first black matrix 231, and the first formazan light-shielding pillar 251A fills the first formazan groove 271A. The first light-shielding pillar 251A blocks stray light outside the first light-shielding pillar 251A from entering the fingerprint sensor 220 through the first groove 271A. Light leaks from the area between the first recess 271A and the first planarization layer 241 on the side away from the first black matrix 231. The first sub-groove 271B penetrates the first planarization layer 241 in a direction from the first planarization layer 241 to the first black matrix 231, wherein the first sub-light shielding pillar 251B fills the third recess 283 and does not fill the fourth recess 284. The edge of the first light-shielding column 251A close to the first through hole 261 coincides with the orthographic projection of the edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212. The orthographic projection of the edge of the first second light-shielding column 251B close to the first through hole 261 on the color film substrate 212 is located outside the orthographic projection of the edge of the first through hole 261 close to the first second light-shielding column 251B on the color film substrate 212. Accordingly, the first a light-shielding pillar 251A is staggered from the first B light-shielding pillar 251B, so that the first a light-shielding pillar 251A and the first B light-shielding pillar 251B are embedded in the first planarization layer 241 at the same time. The first light-shielding pillars 251A are embedded in a portion of the first planarization layer 241 away from the first black matrix 231. The first second light shielding pillars 251B fill the portions of the first second grooves 271B adjacent to the first black matrix 231. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, at a portion of the first planarization layer 241 far from the first black matrix 231, stray light of the first light-shielding pillar 251A far from the first through hole 261 does not enter the fingerprint recognition sensor 220 through the first light-shielding pillar 251A; meanwhile, at a portion of the first second groove 271B close to the first black matrix 231, stray light on a side of the first second light-shielding column 251B away from the first through hole 261 is not transmitted through the first second light-shielding column 251B to enter the fingerprint sensor 220. Therefore, at a position away from the first black matrix 231 in the first planarization layer 241, the first light-shielding pillar 251A blocks stray light of the first light-shielding pillar 251A at a side away from the first through hole 261 from being incident on the fingerprint recognition sensor 220; at a position in the first planarization layer 241 close to the first black matrix 231, the first second light-shielding pillar 251B blocks stray light at a side of the first second light-shielding pillar 251B far from the first through hole 261 from being incident on the fingerprint identification sensor 220; this further increases the sensitivity of the fingerprint recognition sensor 220.

Fig. 11 and 12 are schematic structural diagrams of another display panel according to an embodiment of the invention.

As shown in fig. 11 and 12, the display panel 200 further includes: a second black matrix 232 positioned at a side of the first black matrix 231 adjacent to the array substrate 211; the second black matrix 232 includes a second through hole 262, and an orthogonal projection of the second through hole 262 on the color filter substrate 212 overlaps an orthogonal projection of the first through hole 261 on the color filter substrate 212.

In the embodiment of the invention, the second black matrix 232 is located on a side of the first black matrix 231 close to the array substrate 211. The stray light rays are blocked from being incident on the fingerprint sensor 220 by the region of the second black matrix 232 other than the second through hole 262. The second through-hole 262 in the second black matrix 232 allows light reflected from a finger to be incident on the fingerprint sensor 220. The orthographic projection of the second through hole 262 on the color film substrate 212, the orthographic projection of the first through hole 261 on the color film substrate 212 and the orthographic projection of the fingerprint identification sensor 220 on the color film substrate 212 are overlapped. The first planarization layer 241 is located between the first via hole 261 in the first black matrix 231 and the second via hole 262 in the second black matrix 232. The thickness of the first planarization layer 241 is greater than the sum of the thickness of the first black matrix 231 and the thickness of the second black matrix 232. That is, the thickness of the first planarization layer 241 is greater than the sum of the depth of the first via 261 and the depth of the second via 262. Accordingly, the collimation path of the light reflected by the finger through the first through hole 261, the first planarizing layer 241, and the second through hole 262 is lengthened, and the light reflected by the finger is incident on the fingerprint recognition sensor 220 more collinearly, so that the sensitivity of the fingerprint recognition sensor 220 is further improved.

FIG. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention; fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 11 to 14, the first light shielding post 251A and the second black matrix 232 are formed by using the same material, the first light shielding post 251A is formed by N times of processes, N is an integer, and N is greater than or equal to 1 and less than or equal to 3.

As shown in fig. 11 and 12, the first light-shielding pillar 251A and the second black matrix 232 are formed of the same material, and the first light-shielding pillar 251A is formed through 1 to 3 processes.

In the embodiment of the present invention, first, the first nail groove 271A is formed in the first planarization layer 241. Then, the first nail shade post 251A is formed in the first nail groove 271A. Then, the second black matrix 232 is formed on the first planarization layer 241. The first light-shielding pillar 251A is formed by 2 or 3 processes, the first light-shielding pillar 251A has a larger thickness, and the first recess 271A penetrates all of the first planarization layer 241 along the direction from the first planarization layer 241 to the first black matrix 231. The first nail shade column 251A fills the first nail groove 271A. The first nail light shielding column 251A extends from the first black matrix 231 to the second black matrix 232. When a finger reflects light emitted by the display panel 200 towards one side of the color film substrate 212 close to the array substrate 211, the light reflected by the finger enters the fingerprint identification sensor 220 through the first through hole 261 and the second through hole 262; meanwhile, stray light on the side of the first light-shielding pillar 251A away from the first through hole 261 does not bypass the first light-shielding pillar 251A from between the first black matrix 231 and the second black matrix 232 to enter the fingerprint sensor 220. That is, the fingerprint recognition sensor 220 receives and detects the light reflected by the finger, while not receiving any stray light between the first and second

black matrices

231 and 232 at the side of the first nail shade cylinder 251A away from the first through hole 261. Accordingly, the fingerprint sensor 220 is not affected by any stray light on the side of the first light shielding column 251A away from the first through hole 261 between the first black matrix 231 and the second black matrix 232, and accurately obtains fingerprint information according to the light reflected by the finger. Therefore, the first light-shielding pillar 251A blocks stray light on the side of the first light-shielding pillar 251A away from the first through hole 261 from bypassing the first light-shielding pillar 251A between the first black matrix 231 and the second black matrix 232 to enter the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is higher.

As shown in fig. 13, the first light-shielding pillars 251A and the second black matrix 232 are formed through 1 process using the same material.

In the embodiment of the present invention, first, the first nail groove 271A is formed in the first planarization layer 241. Then, the first light-shielding pillar 251A is formed in the first recess 271A, and at the same time, the second black matrix 232 is formed on the first planarization layer 241. Wherein the first recess 271A penetrates a portion of the first planarization layer 241 in a direction from the first planarization layer 241 to the first black matrix 231. The first nail shade column 251A fills the first nail groove 271A. The first light shielding post 251A and the second black matrix 232 are formed by 1 process using the same material. The manufacturing process of the display panel 200 is simplified.

As shown in fig. 14, the first light-shielding pillars 251A and the second black matrix 232 are formed through 1 process using the same material.

In the embodiment of the present invention, first, the first nail groove 271A is formed in the first planarization layer 241. Then, the first light-shielding pillar 251A is formed in the first recess 271A, and at the same time, the second black matrix 232 is formed on the first planarization layer 241. Wherein, in the direction from the first planarization layer 241 to the first black matrix 231, the first nail groove 271A penetrates the first planarization layer 241, the first nail groove 271A includes a first concave portion 281 close to the first black matrix 231 and a second concave portion 282 far from the first black matrix 231, and the first nail light shielding column 251A fills the first concave portion 281 and does not fill the second concave portion 282. The first light shielding post 251A and the second black matrix 232 are formed by 1 process using the same material. The manufacturing process of the display panel 200 is simplified.

As shown in fig. 11 to 14, the display panel 200 further includes: the second planarization layer 242 and the second shading column 252 are located on one side of the first black matrix 231, which is far away from the color film substrate 212; at least a portion of the second light-shielding pillar 252 is embedded in the second planarization layer 242; the orthographic projection of the second light-shielding column 252 on the color filter substrate 212 surrounds the orthographic projection of the second through hole 262 on the color filter substrate 212.

In the embodiment of the present invention, the second planarization layer 242 is located on a side of the first black matrix 231 away from the color filter substrate 212. The second planarizing layer 242 extends a distance between the second through hole 262 and the fingerprint recognition sensor 220. The first through hole 261, the first planarizing layer 241, the second through hole 262, and the second planarizing layer 242 allow light reflected from the finger to be more collimated to be incident on the fingerprint recognition sensor 220. The sensitivity of the fingerprint recognition sensor 220 is improved. The second light-shielding pillar 252 is embedded in the second groove 272 of the second planarization layer 242, and an orthographic projection of the second light-shielding pillar 252 on the color filter substrate 212 surrounds an orthographic projection of the second through hole 262 on the color filter substrate 212. The second light-shielding pillar 252 blocks stray light on a side of the second light-shielding pillar 252 away from the second through hole 262 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is further improved.

Fig. 15 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 15, the second planarization layer 242 includes a second opening 292, the second opening 292 includes a second hollow-out region 292A and a second non-hollow-out region 292B surrounding the second hollow-out region 292A, the second light-shielding pillar 252 is located in the second non-hollow-out region 292B, and the second hollow-out region 292B penetrates through the second planarization layer 242 along the thickness of the second planarization layer 242.

In the embodiment of the present invention, the second planarization layer 242 includes the second opening 292, and the second opening 292 includes the second hollow area 292A. The light reflected by the finger is incident on the fingerprint sensor 220 through the second hollow 292A. Accordingly, the incidence rate of the light reflected by the finger to the fingerprint recognition sensor 220 is increased, so that the sensitivity of the fingerprint recognition sensor 220 is increased. The second opening 292 further includes a second non-hollow area 292B surrounding the second hollow area 292A, the second light-shielding pillar 252 is located in the second non-hollow area 292B, and the second hollow area 292B penetrates through the second planarization layer 242 along the thickness of the second planarization layer 242. When a finger reflects light emitted by the display panel 200 towards one side of the color film substrate 212 close to the array substrate 211, the light reflected by the finger enters the fingerprint identification sensor 220 through the first through hole 261 and the second through hole 262; meanwhile, stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 is not transmitted through the second light-shielding pillar 252 and enters the fingerprint sensor 220. That is, the fingerprint sensor 220 receives and detects the light reflected by the finger, and does not receive the stray light from the side of the second light-shielding pillar 252 away from the second through hole 262. Therefore, the fingerprint sensor 220 is not affected by the stray light on the side of the second light shielding column 252 away from the second through hole 262, and the fingerprint information can be accurately obtained according to the light reflected by the finger. Therefore, the second light-shielding pillar 252 blocks the stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved. Here, the second planarizing layer 242 is provided with the second hollowed-out region 292A, so that an incidence rate of the light reflected by the finger to the fingerprint recognition sensor 220 is increased, so that the sensitivity of the fingerprint recognition sensor 220 is increased. As shown in fig. 11 to 14, the second planarization layer 242 includes a second groove 272, and the second light-shielding pillar 252 is embedded in the second groove 272; the second groove 272 at least partially penetrates the second planarizing layer 242 in the direction from the second planarizing layer 242 to the second black matrix 232.

In the embodiment of the present invention, the second groove 272 may penetrate a portion of the second planarizing layer 242 in the direction from the second planarizing layer 242 to the second black matrix 232, the depth of the second groove 272 being less than the thickness of the second planarizing layer 242; the second groove 272 may penetrate the entire second planarization layer 242, and the depth of the second groove 272 is equal to the thickness of the second planarization layer 242. The second groove 272 at least partially penetrates through the second planarization layer 242 along the direction from the second planarization layer 242 to the second black matrix 232, so that the second light-shielding pillar 252 is embedded in the second groove 272 of the second planarization layer 242. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 is not transmitted through the second light-shielding pillar 252 and enters the fingerprint sensor 220. That is, the fingerprint sensor 220 receives and detects the light reflected by the finger, and does not receive the stray light from the side of the second light-shielding pillar 252 away from the second through hole 262. Therefore, the fingerprint sensor 220 is not affected by the stray light on the side of the second light shielding column 252 away from the second through hole 262, and the fingerprint information can be accurately obtained according to the light reflected by the finger. Therefore, the second light-shielding pillar 252 blocks the stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved. Here, the second light-shielding pillar 252 is embedded in the second groove 272, so that the second planarization layer 242 only needs to be provided with a groove, the process variation is small, and the process is simple.

As shown in fig. 11 to 14, the second light-shielding pillar 252 fills the second groove 272; alternatively, the second groove 272 penetrates the second planarizing layer 242 in the direction from the second planarizing layer 242 to the second black matrix 232, the second groove 272 includes a fifth concave portion 285 near the second black matrix 232 and a sixth concave portion 286 far from the second black matrix 232, and the second light-shielding pillar 252 fills the fifth concave portion 285 and does not fill the sixth concave portion 286.

As shown in fig. 11 and 12, the second grooves 272 penetrate the entire second planarizing layer 242 in the direction from the second planarizing layer 242 to the second black matrix 232, and the second light-shielding pillars 252 fill the second grooves 272. The second light-shielding pillar 252 extends from the second black matrix 232 to the third black matrix 233. When a finger reflects light emitted by the display panel 200 toward one side of the color film substrate 212 close to the array substrate 211, the light reflected by the finger enters the fingerprint identification sensor 220 through the first through hole 261, the second through hole 262 and the third through hole 263; meanwhile, stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 does not bypass the second light-shielding pillar 252 and enter the fingerprint sensor 220 between the second black matrix 232 and the third black matrix 233. That is, the fingerprint recognition sensor 220 receives and detects the light reflected by the finger, and does not receive any stray light between the second black matrix 232 and the third black matrix 233 on the side of the second light-shielding pillar 252 away from the second through hole 262. Therefore, the fingerprint sensor 220 is not affected by any stray light on the side of the second light shielding column 252 away from the second through hole 262 between the second black matrix 232 and the third black matrix 233, and accurately obtains fingerprint information according to the light reflected by the finger. Therefore, the second light-shielding pillar 252 blocks stray light on the side of the second light-shielding pillar 252 away from the second through hole 262 from bypassing the second light-shielding pillar 252 and entering the fingerprint sensor 220 between the second black matrix 232 and the third black matrix 233, so that the sensitivity of the fingerprint sensor 220 is improved.

As shown in fig. 13, the second groove 272 penetrates a portion of the second planarizing layer 242 in a direction from the second planarizing layer 242 to the second black matrix 232, and the second light-shielding pillar 252 fills the second groove 272. The second light-shielding pillar 252 is embedded in a portion of the second planarization layer 242 away from the second black matrix 232. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, at a portion of the second planarization layer 242 away from the second black matrix 232, stray light on a side of the second light-shielding pillar 252 away from the second through hole 262 is not incident on the fingerprint identification sensor 220 through the second light-shielding pillar 252. Therefore, at a portion of the second planarization layer 242 that is far away from the second black matrix 232, the second light-shielding pillar 252 blocks stray light of the second light-shielding pillar 252 on a side far away from the second through hole 262 from being incident on the fingerprint recognition sensor 220, so that the sensitivity of the fingerprint recognition sensor 220 is improved. Here, the second light-shielding pillar 252 fills the second groove 272, and since the second groove 272 fills the second light-shielding pillar 252, the second light-shielding pillar 252 blocks more stray light rays of the second groove 272 far away from the first through hole 261 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is higher.

As shown in fig. 14, the second groove 272 penetrates the second planarizing layer 242 in the direction from the second planarizing layer 242 to the second black matrix 232, the second groove 272 includes a fifth concave portion 285 near the second black matrix 232 and a sixth concave portion 286 far from the second black matrix 232, and the second light-shielding pillar 252 fills the fifth concave portion 285 and does not fill the sixth concave portion 286. The second light-shielding pillar 252 fills a portion of the second groove 272 adjacent to the second black matrix 232. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, at a portion of the second groove 272 close to the second black matrix 232, stray light on a side of the second light-shielding pillar 252 away from the second through hole 262 is not transmitted through the second light-shielding pillar 252 and enters the fingerprint sensor 220. Therefore, at a portion of the second groove 272 close to the second black matrix 232, the second light-shielding pillar 252 blocks stray light of the second light-shielding pillar 252 far from the second through hole 262 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved. Here, the second light-shielding pillar 252 fills the fifth recess portion 285 and does not fill the sixth recess portion 286, and the second light-shielding pillar 252 blocks stray light of a portion of the fifth recess portion 285 on a side away from the first through hole 261 from being incident on the fingerprint recognition sensor 220, and at the same time, the second light-shielding pillar 252 blocks stray light of a portion of the sixth recess portion 286 on a side away from the first through hole 261 from being incident on the fingerprint recognition sensor 220, so that the sensitivity of the fingerprint recognition sensor 220 is higher.

As shown in fig. 11 to 14, the display panel 200 further includes: a third black matrix 233 on a side of the second black matrix 232 adjacent to the array substrate 211; the third black matrix 233 comprises a third through hole 263, and an orthographic projection of the third through hole 263 on the color filter substrate 212 is overlapped with an orthographic projection of the first through hole 261 on the color filter substrate 212; the third planarizing layer 243 and the third light-shielding pillar 253 are positioned on one side of the array substrate 211 close to the color film substrate 212; at least a portion of the third light-shielding pillar 253 is embedded in the third planarization layer 243; an orthographic projection of the third light-shielding pillar 253 on the color filter substrate 212 surrounds an orthographic projection of the third through hole 263 on the color filter substrate 212.

In the embodiment of the invention, the third black matrix 233 is located on the second black matrix 232 near the array substrate 211. The region of the third black matrix 233 other than the third through hole 263 blocks stray light from being incident on the fingerprint recognition sensor 220. The third through hole 263 in the third black matrix 233 allows light reflected from the finger to be incident on the fingerprint recognition sensor 220. The orthographic projection of the third through hole 263 on the color film substrate 212, the orthographic projection of the first through hole 261 on the color film substrate 212 and the orthographic projection of the fingerprint identification sensor 220 on the color film substrate 212 are overlapped. The first through hole 261, the second through hole 262 and the third through hole 263 allow the light reflected by the finger to be more collimated to be incident on the fingerprint sensor 220. The sensitivity of the fingerprint recognition sensor 220 is further improved. The third planarization layer 243 is located on one side of the array substrate 211 close to the color filter substrate 212. The third planarizing layer 243 extends a distance between the third passing hole 263 and the fingerprint recognition sensor 220. The first through hole 261, the first planarization layer 241, the second through hole 262, the second planarization layer 242, the third through hole 263 and the third planarization layer 243 make the light reflected by the finger more collimated to be incident on the fingerprint recognition sensor 220. The sensitivity of the fingerprint recognition sensor 220 is improved. The third light-shielding pillar 253 is embedded in the third planarization layer 243, and an orthographic projection of the third light-shielding pillar 253 on the color filter substrate 212 surrounds an orthographic projection of the third through hole 263 on the color filter substrate 212. Accordingly, the third light-shielding pillar 253 blocks the stray light on the side of the third light-shielding pillar 253 away from the third through hole 263 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is further improved.

As shown in fig. 11 to 14, the third recesses 273 at least partially penetrate the third planarizing layer 243 in the third planarizing layer 243 to the third black matrix direction.

In the embodiment of the present invention, the third recess 273 may penetrate a portion of the third planarizing layer 243 in the direction of the third planarizing layer 243 to the third black matrix, and the depth of the third recess 273 is less than the thickness of the third planarizing layer 243; the third grooves 273 may penetrate the entire third planarizing layer 243, and the depth of the third grooves 273 is equal to the thickness of the third planarizing layer 243. The third recess 273 at least partially penetrates through the third planarization layer 243 in the direction from the third planarization layer 243 to the third black matrix, so that the third light-shielding pillar 253 is embedded in the third recess 273 of the third planarization layer 243. When a finger reflects light emitted by the display panel 200 toward a side of the color film substrate 212 close to the array substrate 211, the fingerprint sensor 220 receives and detects the light reflected by the finger; meanwhile, stray light on the side of the third light-shielding pillar 253 far from the third through hole 263 is not transmitted through the third light-shielding pillar 253 to enter the fingerprint identification sensor 220. That is, the fingerprint sensor 220 receives and detects the light reflected by the finger, and does not receive the stray light from the side of the third light-shielding pillar 253 away from the third through hole 263. Therefore, the fingerprint sensor 220 is not affected by the stray light on the side of the third light-shielding pillar 253 far from the third through hole 263, and the fingerprint information can be accurately obtained according to the light reflected by the finger. Therefore, the third light-shielding pillar 253 blocks the stray light on the side of the third light-shielding pillar 253 far from the third through hole 263 from being incident on the fingerprint sensor 220, so that the sensitivity of the fingerprint sensor 220 is improved.

Fig. 16 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 16, the display panel 200 further includes: a liquid crystal layer LC located between the array substrate 211 and the color film substrate 212; the first light-shielding pillar 251A penetrates the first planarization layer 241, and the first light-shielding pillar 251A extends into or penetrates the liquid crystal layer LC.

In the embodiment of the present invention, the first formazan groove 271A penetrates through the first planarization layer 241, and the first formazan light-shielding pillar 251A fills the first formazan groove 271A. The first light-shielding pillar 251A blocks stray light outside the first light-shielding pillar 251A from being incident on the fingerprint sensor 220 through the first planarization layer 241. The first nail light shielding column 251A extends into or penetrates the liquid crystal layer LC. The light reflected by the finger reaches the liquid crystal layer LC through an area inside the first a-shield column 251A, and the first a-shield column 251A limits the range of the light reflected by the finger at the liquid crystal layer LC so that the light reflected by the finger is incident to the fingerprint recognition sensor 220. Accordingly, the influence of the liquid crystal layer LC on the fingerprint recognition sensor 220 is eliminated here to make the sensitivity of the fingerprint recognition sensor 220 higher.

Fig. 17 is a schematic structural diagram of another display panel according to an embodiment of the invention.

As shown in fig. 17, orthographic projections of the first light-shielding post 251A, the second light-shielding post 252 and the third light-shielding post 253 on the color film substrate 212 do not overlap. The first light-shielding column 251A, the second light-shielding column 252 and the third light-shielding column 253 respectively block stray light from being incident on the fingerprint identification sensor 220. The edge of the first light-shielding column 251A close to the first through hole 261 coincides with the orthographic projection of the edge of the first through hole 261 close to the first light-shielding column 251A on the color film substrate 212. The edge of the second light-shielding pillar 252 close to the second through hole 262 and the orthographic projection of the edge of the second through hole 262 close to the second light-shielding pillar 252 on the color film substrate 212 are not overlapped. The orthographic projection of the edge of the second light-shielding column 252 close to the second through hole 262 on the color film substrate 212 is located outside the orthographic projection of the edge of the first light-shielding column 251A close to the first through hole 261 on the color film substrate 212. The edge of the third light-shielding pillar 253 close to the third through hole 263 and the orthographic projection of the edge of the third through hole 263 close to the third light-shielding pillar 253 on the color film substrate 212 are not overlapped. The orthographic projection of the edge of the third light-shielding pillar 253 close to the third through hole 263 on the color filter substrate 212 is located outside the orthographic projection of the edge of the second light-shielding pillar 252 close to the second through hole 262 on the color filter substrate 212. The foregoing embodiment describes the orthographic projection relationship of the first light-shielding column 251A, the second light-shielding column 252, and the third light-shielding column 253 on the color film substrate 212. It should be understood by those skilled in the art that the orthographic projection relationship of the first opaque pillar 251A, the second opaque pillar 252, and the third opaque pillar 253 on the color filter substrate 212 is not limited to the above-mentioned embodiment, and as long as the first opaque pillar 251A, the second opaque pillar 252, and the third opaque pillar 253 respectively block the stray light of the first opaque pillar 251A far away from the first through hole 261, the stray light of the second opaque pillar 252 far away from the second through hole 262, and the stray light of the third opaque pillar 253 far away from the third through hole 263 from entering the fingerprint identification sensor 220, the orthographic projection relationship of the first opaque pillar 251A, the second opaque pillar 252, and the third opaque pillar 253 on the color filter substrate 212 is within the scope of the present invention. Fig. 18 is a schematic structural diagram of a display device according to an embodiment of the invention.

As shown in fig. 18, the display device 300 includes the display panel 200.

In the embodiment of the present invention, the display device 300 implements display by using the display panel 200, such as a smart phone or the like. The display panel 200 is described above and will not be described in detail.

In summary, the present invention provides a display panel and a display device. The display panel includes: the array substrate and the color film substrate are oppositely arranged; the fingerprint identification sensor is positioned on one side of the array substrate close to the color film substrate; the first black matrix, the first planarization layer and the first shading column are positioned on one side, close to the array substrate, of the color film substrate; the first black matrix comprises a first through hole, and the orthographic projection of the first through hole on the color film substrate is overlapped with the orthographic projection of the fingerprint identification sensor on the color film substrate; at least part of the first shading column is embedded in the first planarization layer; the orthographic projection of the first light-shielding column on the color film substrate surrounds the orthographic projection of the first through hole on the color film substrate, or one edge of the orthographic projection of the first light-shielding column on the color film substrate is superposed with the edge of the first through hole on the color film substrate. In the invention, when a finger reflects light emitted by a display panel towards one side of a color film substrate close to an array substrate, the light reflected by the finger enters a fingerprint identification sensor through a first through hole; meanwhile, stray light on one side, away from the first through hole, of the first shading column cannot penetrate through the first shading column and enter the fingerprint identification sensor. That is, the fingerprint recognition sensor receives and detects the light reflected by the finger, and does not receive the stray light on the side of the first nail shielding column away from the first through hole. Therefore, the fingerprint identification sensor is not affected by stray light rays of one side, far away from the first through hole, of the first nail light shielding column, and fingerprint information is accurately acquired according to light rays reflected by the fingers. Therefore, the first shading column blocks stray light rays, far away from one side of the first through hole, of the first shading column from entering the fingerprint identification sensor, and therefore the sensitivity of the fingerprint identification sensor is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A display panel, comprising:

the array substrate and the color film substrate are oppositely arranged;

the orthographic projection of the first light-shielding column on the color film substrate surrounds the orthographic projection of the first through hole on the color film substrate, or one edge of the orthographic projection of the first light-shielding column on the color film substrate is superposed with the edge of the first through hole on the color film substrate;

wherein the content of the first and second substances,

the first planarization layer comprises a first opening, the first opening comprises a first hollowed-out area and a first non-hollowed-out area surrounding the first hollowed-out area, the first light-shielding pillar is located in the first non-hollowed-out area, the first hollowed-out area penetrates through the first planarization layer along the thickness of the first planarization layer, and the first light-shielding pillar penetrates through the first planarization layer along the direction from the first planarization layer to the first black matrix;

alternatively, the first and second electrodes may be,

the first planarization layer comprises a first groove, the first groove comprises a first groove, and the first shading column is embedded in the first groove;

the first grooves penetrate through at least part of the first planarization layer in the direction from the first planarization layer to the first black matrix, and the side, away from the first black matrix, of the first grooves is flush with the surface of the first planarization layer, away from the first black matrix;

the first shading column is filled with the first groove.

2. The display panel according to claim 1, further comprising a first b-type light-shielding pillar located on a side of the first black matrix away from the color film substrate;

3. The display panel according to claim 1, further comprising: the second black matrix is positioned on one side, close to the array substrate, of the first black matrix;

4. The display panel according to claim 3, wherein the first light-shielding pillar and the second black matrix are formed of the same material, the first light-shielding pillar is formed by N times of processes, N is an integer, and N is greater than or equal to 1 and less than or equal to 3.

5. The display panel according to claim 3, further comprising: the second planarization layer and the second shading column are positioned on one side, away from the color film substrate, of the first black matrix;

6. The display panel according to claim 5, wherein the second planarization layer comprises a second opening, the second opening comprises a second hollow area and a second non-hollow area surrounding the second hollow area, the second light-shielding pillar is located in the second non-hollow area, and the second hollow area penetrates through the second planarization layer along a thickness of the second planarization layer.

7. The display panel according to claim 5, wherein the second planarization layer comprises a second groove, and the second light-shielding pillar is embedded in the second groove;

8. The display panel according to claim 7, wherein the second light-shielding pillar fills the second groove;

9. The display panel according to claim 5, further comprising: the third black matrix is positioned on one side, close to the array substrate, of the second black matrix;

10. The display panel according to claim 1, further comprising: the liquid crystal layer is positioned between the array substrate and the color film substrate;

11. A display panel, comprising:

the array substrate and the color film substrate are oppositely arranged;

wherein the content of the first and second substances,

the first grooves penetrate through at least part of the first planarization layer in the direction from the first planarization layer to the first black matrix;

the first grooves penetrate through the first planarization layer in a direction from the first planarization layer to the first black matrix, the first grooves include first concave portions close to the first black matrix and second concave portions far from the first black matrix, and the first light-shielding columns fill the first concave portions and do not fill the second concave portions.

12. The display panel according to claim 11, further comprising: the second black matrix is positioned on one side, close to the array substrate, of the first black matrix;

13. The display panel of claim 12, wherein the first light-shielding pillar and the second black matrix are formed of the same material, the first light-shielding pillar is formed by N processes, N is an integer, and N is greater than or equal to 1 and less than or equal to 3.

14. The display panel according to claim 12, further comprising: the second planarization layer and the second shading column are positioned on one side, away from the color film substrate, of the first black matrix;

15. The display panel according to claim 14, wherein the second planarization layer comprises a second opening, the second opening comprises a second hollow area and a second non-hollow area surrounding the second hollow area, the second light-shielding pillar is located in the second non-hollow area, and the second hollow area penetrates through the second planarization layer along a thickness of the second planarization layer.

16. The display panel according to claim 14, wherein the second planarization layer comprises a second groove, and the second light-shielding pillar is embedded in the second groove;

17. The display panel according to claim 16, wherein the second light-shielding pillar fills the second groove;

18. The display panel according to claim 14, further comprising: the third black matrix is positioned on one side, close to the array substrate, of the second black matrix;

19. A display device characterized by comprising the display panel according to any one of claims 1 to 18.