WO2019091054A1

WO2019091054A1 - Display and electronic device

Info

Publication number: WO2019091054A1
Application number: PCT/CN2018/084467
Authority: WO
Inventors: 刘俊彦
Original assignee: 华为技术有限公司
Priority date: 2017-11-13
Filing date: 2018-04-25
Publication date: 2019-05-16
Also published as: CN111052033B; CN111052033A

Abstract

The present application relates to a display, comprising a display panel and a sensor. The display panel comprises a functional layer and a protective layer that are stacked, and a front surface of the functional layer is a display surface. The protective layer is attached to a back surface of the functional layer. The sensor is provided on a side of the protective layer facing away from the functional layer. The protective layer is provided with a plurality of through holes, and the plurality of through holes are filled with an adhesive glue. The sensor is adhered to the protective layer and the functional layer by the adhesive glue. According to the display of the present application, the sensor is attached to the back surface of a display area of the functional layer by means of the adhesive glue filled in the through hole so that screen-to-body ratio of the display is improved, and the product yield and the appearance consistency are improved. The application also relates to an electronic device comprising the above display.

Description

Display and electronic device

Technical field

The present application relates to the field of displays, and more particularly to a display having a sensor on the back of a display area, and an electronic device including the display.

Background technique

Current electronic devices are becoming more and more strict in controlling the screen ratio. Various manufacturers are studying how to better integrate the sensing device on the back of the display to maximize the screen ratio of the display area. To integrate the sensing device on the back of the display, on the one hand, it is necessary to improve the bonding yield of the sensor and the back of the display, and on the other hand, to avoid the influence of the sensor on the display of the display.

Summary of the invention

The purpose of the present application is to provide a display with a sensor on the back, which can improve the bonding yield of the sensor while realizing the sensing function, and at the same time ensure that the display has a better display effect.

In a first aspect, the present application provides a display including a display panel and a sensor, the display panel including a laminated functional layer and a protective layer, a front surface of the functional layer is a display surface, and the protective layer is attached to the function a back surface of the layer, the sensor is disposed on a side of the protective layer facing away from the functional layer, the protective layer is provided with a plurality of through holes, the plurality of through holes are filled with an adhesive, and the sensor passes through the The adhesive is bonded to the protective layer and the functional layer.

In the display of the present application, the sensor is attached to the back surface of the display area of the display panel by an adhesive filled in the through hole. And the sensor can emit and recover signals through the adhesive glue connected in the through hole between the protective layers, and the function of the sensor can be realized. At the same time, since a plurality of through holes are disposed in the protective layer, the adhesive is dispersed in the plurality of through holes, and the sensor is bonded and fixed, and the stress generated on the functional layer during the bonding and fixing can be dispersed. During the bonding process, the adhesive layer and the functional layer do not cause scratches on the functional layer during the bonding operation because the contact area is too large, thereby effectively protecting the functional layer during bonding. The process is protected from external damage. Further, a structure of a part of the protective layer remains between any two adjacent through holes, and the partial structure can better hide the observed color inconsistency of the display caused by the sensor, so that the The display also achieves a higher yield and better appearance consistency while increasing the screen ratio.

In one embodiment, a surface of the protective layer that is bonded to the functional layer is a first surface, and a surface of the protective layer facing away from the functional layer is a second surface, the through hole and the first surface a first opening is formed at the intersection, and a second opening is formed at the intersection of the through hole and the second surface, the first opening is equal in area to the second opening, that is, the through hole is a straight hole of equal section, Easy to process and precision control.

In another embodiment, the surface of the protective layer that is bonded to the functional layer is a first surface, and the surface of the protective layer facing away from the functional layer is a second surface, the through hole and the first surface A first opening is formed at the intersection of the surfaces, and a second opening is formed at the intersection of the through hole and the second surface, the area of the first opening being smaller than the area of the second opening. In this embodiment, the area of the adhesive in the same through hole contacting the functional layer is smaller than the area in contact with the sensor, so that the sensor can be more contacted with the adhesive to obtain a better bonding effect. At the same time, the contact area between the adhesive and the functional layer can be relatively reduced, the stress generated by the adhesive on the functional layer can be reduced, and the risk of damage of the functional layer can be reduced.

Wherein, the first opening and the second opening have the same shape, which is convenient for processing and precision control.

Wherein the protective layer is provided with a receiving cavity on a surface facing away from the functional layer, the plurality of through holes are formed on a bottom surface of the receiving cavity, and the receiving cavity is matched with a shape of the sensor, The sensor is at least partially embedded in the receiving cavity. The receiving cavity can position the sensor relative to the display panel, and the sensor is at least partially embedded in the receiving cavity, which is beneficial to the thinner design of the display.

Wherein, the receiving cavity and the sensor are gap-fitted, and the gap is filled with a buffer layer. The buffer layer facilitates protection of the sensor from external shocks.

Wherein, the adhesive is filled between the sensor and the bottom surface of the receiving cavity. The adhesive can assist in positioning and fitting the sensor to the sensor.

In one embodiment, the plurality of through holes are arranged in a plurality of rows and columns, and the through holes of each row are sequentially arranged in a first direction, and the through holes of each column are sequentially arranged in a second direction, the first The direction is perpendicular to the second direction, and one of the two adjacent rows of the through holes corresponds to a position between two adjacent ones of the other columns Settings. Such an arrangement helps to increase the porosity in the bonding area, that is, more through holes can be disposed in the same area, and the number of through holes is increased to ensure more reliable and stable connection between the sensor and the display panel. Connection

In other embodiments, the plurality of through holes may also be arranged in a matrix, and may be a square matrix or a circular matrix.

The shape of each through hole can be designed in various ways, as follows:

In one embodiment, each of the through holes has a circular or elliptical cross section to avoid stress concentration in the protective layer due to the through holes.

In one embodiment, the through hole is a conical through hole, and a radius of the through hole near a side of the functional layer is smaller than a radius of the through hole near a side of the sensor.

In one embodiment, the through hole is a stepped through hole, and a radius of the through hole near a side of the functional layer is smaller than a radius of the through hole near a side of the sensor.

In one embodiment, the through hole having an equal cross-sectional shape and the through hole having a second opening area larger than the first opening area may be simultaneously disposed in the protective layer.

In one embodiment, the protective layer is provided with a bonding area at a bonding position corresponding to the sensor, a plurality of the through holes are arranged in the bonding area, and a vertical projection of the sensor on the protective layer It is completely contained in the bonding area, avoiding unnecessary through holes in the protective layer, and destroying the structural stability of the protective layer.

In one embodiment, when the sensor is square, a plurality of the through holes are arranged in an array in the bonding area.

In one embodiment, when the sensor is circular, a plurality of the through holes are arranged in a plurality of annular shapes in which the radii are sequentially increased in the bonding area.

In one embodiment, the functional layer includes a substrate, a light-emitting element, and a polarizer, which are sequentially stacked, the substrate is used for carrying, the light-emitting element is used for light emission, and the polarizer is used for filtering polarized light.

In one embodiment, a touch sensing layer is further disposed between the light emitting element and the polarizer for implementing a touch function of the display.

In one embodiment, the protective layer includes a buffer layer, a light shielding layer, and a heat dissipation layer which are sequentially stacked, wherein the buffer layer is located between the light shielding layer and the substrate. The buffer layer, the light shielding layer and the heat dissipation layer are used to provide buffer protection, shading, heat dissipation and anti-interference for the functional layer.

In one embodiment, the buffer layer material is PET, and the buffer layer is used to protect the functional layer when the functional layer is subjected to impact or vibration.

In one embodiment, the light shielding layer material is black foam, and the light shielding layer is for preventing external light from entering the functional layer.

In one embodiment, the heat dissipation layer material is copper, and the heat dissipation layer is used for heat dissipation and blocking signal interference of the functional layer.

In one embodiment, the projection of the sensor on the second surface is completely contained within the bonding area to ensure that the sensor as a whole is obtaining a larger signal path for the through hole.

In one embodiment, the surface of the sensor facing the functional layer is a first plane, and the first plane is in contact with the second surface, and the sensor is directly attached to the protective layer. The overall thickness of the display is thinner.

In one embodiment, a plurality of the through holes are vertically penetrated between the first surface and the second surface, and the vertically disposed through holes facilitate the orderly passage of signals of the sensor.

In one embodiment, the adhesive is a transparent colloid, which facilitates the passage of signals when the sensor is an optical signal.

In one embodiment, the adhesive is an OCA optically clear adhesive, and a large light transmission rate can be obtained.

In one embodiment, the display further includes at least one second sensor, the protective layer further includes at least one second bonding area, and the second sensor and the second bonding area are correspondingly matched to Integration of a plurality of said sensors is implemented within the display.

In one embodiment, the sensor can be one or more of a fingerprint sensor, a distance sensor, an earpiece, or a face recognition sensor.

In one embodiment, the bonding area completely accommodates the display area of the display panel to implement a sensing function of the entire area in the display area of the display panel. If the sensor adopts a fingerprint sensor, the full-screen fingerprint unlocking function of the display panel in the display area can be implemented.

The application further relates to an electronic device comprising a processing unit and the above-described display, the processing unit being electrically connected to the sensor in the display, the processing unit for performing data interaction with the sensor. It can be understood that the electronic device can obtain a higher screen ratio because of the application of the display.

DRAWINGS

1 is an exploded perspective view of an electronic device according to an embodiment of the present application;

2 is a schematic cross-sectional view of a display provided by an embodiment of the present application;

Figure 3 is a front elevational view of the display of Figure 2;

4 is a cross-sectional view showing an embodiment of a display provided by the present application;

5 is a front elevational view of an embodiment of a display provided by the present application;

6 is a front elevational view of an embodiment of a display provided by the present application;

7 is a cross-sectional view showing an embodiment of a display provided by the present application;

8 is a cross-sectional view showing an embodiment of a display provided by the present application;

9 is a cross-sectional view showing an embodiment of a display provided by the present application;

10 is a cross-sectional view showing an embodiment of a display provided by the present application;

11 is a front elevational view showing an embodiment of a display provided by the present application;

12 is a front elevational view of an embodiment of a display provided by the present application.

Detailed ways

The technical solutions of the present application are described below in conjunction with the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative efforts are within the scope of the present application.

Embodiments of the present application relate to a display provided with a sensor and an electronic device. The electronic device can be any device with communication and storage functions, such as: tablet, mobile phone, e-reader, remote control, personal computer (PC), notebook computer, car device, network television, wearable device, etc. Functional smart device. It can be understood that various electronic devices are in need of their own functions, and various types of sensors are disposed in the electronic device. Some of these sensors need to be presented to the user along with the display of the electronic device to facilitate their function, such as a fingerprint sensor, distance sensor, earpiece or facial recognition sensor. The electronic device provided by the present application does not specifically limit the specific sensor function.

Referring to FIG. 1 , the electronic device 200 is provided with a processing unit 210 , a display 100 , and a housing 220 that cooperates with the display 100 . The processing unit 210 is located inside the housing 220, the processing unit 210 is electrically connected to the sensor 40 in the display 100, and the processing unit 210 is configured to perform data interaction with the sensor 40. It can be understood that the processing unit 210 can also be electrically connected to the display panel 10 in the display 100 for controlling the display screen of the display 100.

Please refer to the display 100 shown in FIG. 2 for details. The display 100 includes a display panel 10 and a sensor 40. The display panel 10 includes a laminated functional layer 20 and a protective layer 30. As can be seen from FIG. 2, in the present embodiment, the functional layer 20 includes a substrate 21, a light-emitting element 22, and a polarizer 23 which are sequentially stacked. It can be understood that the substrate 21 is used to carry the light-emitting element 22 and the polarizer 23, the light-emitting element 22 is used for illumination of the display 100, and the polarizer 23 is used for filtering the light-emitting element. Polarized light emitted by 22. The protective layer 30 includes a buffer layer 31, a light shielding layer 32, and a heat dissipation layer 33 which are sequentially laminated. The buffer layer 31 is located between the light shielding layer 32 and the substrate 21 of the functional layer 20 . It can be understood that the buffer layer 31, the light shielding layer 32 and the heat dissipation layer 33 are used to provide buffer protection, shading, heat dissipation and anti-interference for the functional layer 20. The front surface of the functional layer 20 includes a display area, and the protective layer 30 is attached to the back surface of the display area of the functional layer 20. Specifically, the protective layer 30 includes an opposite first surface 301 and a second surface 302. The first surface 301 is attached to the back surface of the display area of the functional layer 20, and the second surface 302 is located away from the Functional layer 20 side. A plurality of through holes 50 penetrating between the first surface 301 and the second surface 302 are provided in the protective layer 30. It can be understood that the through hole 50 completely penetrates the protective layer 30, so that an area of the functional layer 20 covered by the protective layer 30 can communicate with the outside through the through hole 50. The through hole 50 is also filled with an adhesive 60, and the sensor 40 is bonded to the functional layer 20 by the adhesive 60. That is, the sensor 40 is bonded to the protective layer 30 by the adhesive 60.

The display 100 of the present application is attached to the back surface of the display area of the display panel 10 by the adhesive 60 filled in the through hole 50. For the operation of the sensor 40, since the adhesive 60 has a high signal throughput rate, the sensor 40 can pass through the connection between the first face 301 and the second face 302. The via 50 emits and recovers signals outside of the display area of the display 100. That is, the sensor 40 can penetrate the adhesive 60 and the functional layer 20 to sense the external environment of the display 100. At the same time, since the through hole 50 is disposed in the protective layer 30, the bonding adhesive 60 passes through the plurality of the through holes 50 and the function during the bonding process with the functional layer 20. The layer 20 achieves the fit. Specifically, the plurality of through holes 50 are used to bond the adhesive 60 to the substrate 21 , and the plurality of through holes 50 ensure that the bonding area of the adhesive 60 and the substrate 21 is sufficient. In the case, the pressure generated by the adhesive 60 on the substrate 21 during the bonding process is distributed in the plurality of through holes 50. The contact area of the adhesive 60 with the substrate 21 is dispersed, and the pressure of the adhesive 60 against the substrate 21 is reduced with a certain bonding force. Meanwhile, since the contact area of the adhesive 60 and the substrate 21 is dispersed, the contact area of the adhesive 60 with the substrate 21 is small in a single through hole 50, and the adhesive is small. 60 is laterally extended relative to the substrate 21 during the bonding process with the substrate 21, and the lateral extension displacement of the adhesive 60 is also reduced correspondingly under a small contact area, thereby avoiding the The substrate 21 is scratched due to an excessive displacement of the adhesive 50 in the bonding operation. The plurality of through holes 50 effectively protect the functional layer 20 from being scratched by external force damage during the bonding process.

On the other hand, referring to FIG. 3, the display 100 is viewed from the front of the display area of the display 100, and the sensor 40 is located behind the protective layer 30. Due to the arrangement of the through holes 50, a part of the sensor 40 is blocked by the protective layer 30. In actual production, the color of the sensor 40 may differ from the color of the protective layer 30, and the functional layer 20 may not be completely shielded from light due to functional requirements. This makes it easy for the sensor 40 to be visually distinguished from the protective layer 30 by the user when it is not covered by the protective layer 30. That is, the display 100 is likely to have a defect that the appearance effect is not uniform when the user observes it. The through hole 50 is designed to prevent the sensor 40 from being exposed to the outside of the protective layer 30 over a large area. And a portion of the sensor 40 exposed to the outside of the display area of the display panel 10 in the direction of the user observation is dispersed by the plurality of through holes 50. A portion of the protective layer 30 remains between the two adjacent through holes 50 as a shield. Therefore, in the direction in which the user faces the display area, the display panel 10 preferably hides the appearance inconsistency caused by the sensor 40 because of the arrangement of the through holes 50.

Thus, the display 100 of the present application achieves a higher yield and better appearance consistency while increasing the screen ratio. The electronic device 200 described in the present application can also obtain a higher screen ratio because the display 100 is equipped. At the same time, because of the occlusion of the sensor 40 by the protective layer 30 and the masking effect of the through hole 50 on the sensor 40, the appearance consistency of the electronic device 200 is also improved.

In the embodiment of FIG. 2, the protective layer 30 includes a buffer layer 31, a light shielding layer 32, and a heat dissipation layer 33 which are sequentially stacked. Wherein, the material of the buffer layer 31 may be polyethylene terephthalate (PET), and the buffer layer 31 may be used to provide the functional layer 20 when the functional layer 20 is subjected to impact or vibration. protection. The material of the light shielding layer 32 may be a black foam, and the light shielding layer 32 is for preventing external light from entering the functional layer 20, thereby affecting the color development of the functional layer 20. The light shielding layer 32 is also an important component of the overall appearance color of the protective layer 30. In an embodiment, in order to further reduce the chromatic aberration between the protective layer 30 and the sensor 40, the light shielding layer 32 may also be disposed in a color similar to the appearance color of the sensor 40. The material of the heat dissipation layer 33 may be a metal film such as a copper film. The heat dissipation layer 33 is mainly used for heat dissipation and blocking interference signals of the functional layer 20.

It is to be understood that the technical solution of the display 100 of the present application is mainly directed to the structure of the through hole 50 opened in the protective layer 30, and the pair of the adhesive glue 60 filled in the through hole 50. The bonding function of the functional layer 20 and the sensor 40. The actual implementation of the internal structure, composition, and material of the protective layer 30 or the functional layer 20 has little effect on the implementation of the scheme of the display 100 of the present application, which is not limited in this application. For example, referring to the embodiment of FIG. 4, a touch sensing layer 24 is further disposed between the light emitting element 22 and the polarizer 23, and the touch sensing layer 24 can be added to implement the touch function of the display 100. . Of course, in other embodiments, the touch sensing layer 24 can also be integrated into the light emitting element 22.

With continued reference to FIG. 3, in one embodiment, the protective layer 30 is provided with a bonding area 303. The position of the bonding area 303 is corresponding to the sensor 40. The bonding area 303 covers at least a part of the sensor 40, and the plurality of the through holes 50 are received in the bonding area 303. Because the through hole 50 is used to fill the adhesive 60 on the one hand to achieve the bonding of the sensor 40 and the protective layer 30, on the other hand, the through hole 50 is used for the signal passage of the sensor 40. . Therefore, the through hole 50 can be considered to be provided for the sensor 40. If the protective layer 30 is provided with the through hole 50 at a position where the sensor 40 is not attached, unnecessary waste is caused, and unnecessary structural damage is formed to the protective layer 30. Therefore, the through holes 50 are all accommodated in the bonding area 303, and the bonding area 303 covers at least a part of the sensor 40, so that the through holes 50 can be prevented from being opposite to the protective layer 30. The structure and the influence of the appearance. Further, as shown in FIG. 5, the projection of the sensor 40 on the second surface 302 is completely received in the bonding area 303, and the sensor 40 can be ensured to be aligned with the through hole 50 as well. That is, when the bonding area 303 completely covers the sensor 40, the sensor 40 can obtain a larger signal path.

One embodiment, as shown in FIG. 3, has a plurality of the through holes 50 having the same shape, and a plurality of the through holes 50 are also equal in size. Specifically, any of the through holes 50 has the same shape and area in the cross section of the same distance in a direction away from the display area of the display panel 10. Such an arrangement facilitates the processing of the through holes 50 without requiring different processing operations for each of the through holes 50 because the shapes of the respective through holes 50 are different or different in size. On the other hand, when the adhesive paste 60 is filled into the through hole 50, the uniform arrangement of the through holes 50 also facilitates the control of the amount of the adhesive 60 to be injected, without having to The volume of the through hole 50 is calculated separately.

The arrangement of the plurality of through holes 50 in the bonding area 303 may be any arrangement. In one embodiment, a plurality of the through holes 50 are arranged in an array in the bonding area 303. The shape of the different sensors 40 is different, so the shape of the bonding area 303 also varies with the shape of the sensor 40.

It can be understood that, referring to FIG. 3 and FIG. 5, when the outer shape of the sensor 40 is square, a plurality of the through holes 50 are arranged in a matrix in the bonding area 303. When the sensor 50 is circular, a plurality of the through holes 50 are arranged in a plurality of annular shapes in which the radii are sequentially increased in the bonding area 303. Such an arrangement can match the shape of the sensor 40 to a greater extent, such that the sensor 40 can pass signals through more of the through holes 50 in the active area. On the other hand, an ordered array arrangement also facilitates the processing of the through holes 50.

It can be understood that when the sensor 40 has a polygonal shape or an irregular shape, the through holes 50 may also be arranged in an array in the bonding area 303, and the array of the through holes 50 is arranged in an array. The shape of the sensor 40 is matched.

Another embodiment is shown in Fig. 6. A plurality of the through holes 50 are arranged in a plurality of rows in the bonding area 303. Specifically, in the first direction 001 and the second direction 002 that are perpendicular to each other, each of the through holes 50 is sequentially arranged along the first direction 001, and in the second direction 002, the plurality of rows are The apertures 50 are arranged in an alternating first row 501 and second row 502. The position of the through hole 50 of any one of the first rows 501 in the first direction 001 is located between two adjacent through holes 50 in the second row 502. Correspondingly, the position of any one of the through holes 50 in the second row 502 in the first direction 001 is also located between two adjacent through holes 50 in the first row 501.

In other words, the plurality of through holes 50 are arranged in a plurality of rows and columns, and the rows of the through holes 50 are sequentially arranged along the first direction 001, and the rows of the through holes 50 are along the second direction 002. Arrange in order. The first direction 001 is perpendicular to the second direction 002, and any one of the adjacent two rows of the through holes 50 corresponds to two adjacent ones of the other columns. The position between the through holes 50 is set. Such an arrangement helps to increase the porosity in the bonding area 303, so that more signal channels can be provided to the sensor 40 in the bonding area 303, providing a smoother connection to the sensor 40. Signal transmission channel.

In the embodiment of FIG. 6, the through holes 50 in the first row 501 are located in the first direction 001 between the two adjacent through holes 50 on the second row 502. a dot position, the corresponding through hole 50 in the second row 502 is also located at a midpoint between the adjacent two through holes 50 on the first row 501 in the first direction 001. At this time, the porosity in the bonding area 303 can be maximized, and the operation of the sensor 40 is more effective.

For a specific shape of a single of the through holes 50 in the protective layer 30, an embodiment is shown in FIG. 2, and the through holes 50 are straight holes of equal section. Specifically, the through hole 50 intersects with the first surface 301 to form a first opening 51, and the through hole 50 intersects with the second surface 302 to form a second opening 52, the first opening 51 and The shape of the second opening 52 is the same and the area is equal, and the shape of the through hole 50 in any section is the same with the first opening 51 and the second in the extending direction of the through hole 50. The openings 52 are identical in shape and equal in area. The through hole 50 is provided as a straight hole of equal section, which facilitates the processing of the through hole 50 and the control of accuracy.

Another embodiment is shown in FIG. 4, where the through hole 50 intersects with the first surface 301 to form a first opening 51, and the through hole 50 intersects with the second surface 302 to form a second opening 52. Although the shape of the first opening 51 and the second opening 52 are the same, the area of the first opening 51 is smaller than the area of the second opening 52. That is, the through hole 50 is a variable cross section hole. Since the bonding between the protective layer 30 and the functional layer 20 can be achieved by a bonding process, the sensor 40 and the functional layer 20 can only be realized by the adhesive 60. The connection is fixed. When the area of the second opening 52 is larger than the area of the first opening 51, the sensor 40 is more in contact with the adhesive 60 to obtain a better bonding effect, thereby achieving The protective layer 30 is more firmly connected.

It can be understood that the shapes of the first opening 51 and the second opening 52 may be any shape, such as a circle, a square, an ellipse or a polygon, and the like. The shape of the through hole 50 can be determined according to the requirements of the sensor 40. Of course, when the first opening 51 and the second opening 52 are both circular or elliptical, stress concentration is not likely to occur in the inner wall of the through hole 50, and the structural stability of the protective layer 30 is stable. Better.

In the embodiment of FIG. 4, the first opening 51 and the second opening 52 are both circular, and the through hole 50 is a conical through hole. And in the extending direction of the through hole 50, the radius of the circular circle of the through hole 50 becomes larger as the distance between the cross section and the first surface 301 is larger.

Another embodiment is shown in FIG. 7. The first opening 51 and the second opening 52 are also circular, but in the embodiment, the through hole 50 is a stepped through hole. The through hole 50 includes at least a first straight hole 501 and a second straight hole 502, wherein the first opening 51 is an opening formed at a boundary between the first straight hole 501 and the first surface 301, the first The second opening 52 is an opening formed at a boundary between the second straight hole 502 and the second surface 302. It can be understood that the radius of the first opening 51 is smaller than the radius of the second opening 52.

In another embodiment, the through hole 50 is a straight hole of equal section near the first surface 301, and the through hole 50 has a conical through hole on a side close to the second surface 302. . The shape of the through hole 50 of FIG. 8 can also be described as the through hole 50 being a straight hole of equal section, and the through hole 50 is chamfered on the side close to the second surface 302.

It can be understood that when the through hole 50 is a straight hole of equal section, the protective layer 30 may be left between two adjacent through holes 50. When the through hole 50 is disposed in a manner that the first opening 51 is smaller than the second opening 52, the volume of the protective layer 30 between two adjacent through holes 50 is correspondingly reduced. The smaller the volume of the protective layer 30 in the bonding area 303, the lower the structural reliability of the protective layer 30 in the bonding area 303. To this end, the through hole 50 having an equal cross-sectional shape and the through hole 50 having an area larger than the area of the first opening 51 may be simultaneously disposed in the bonding area 303. The manner of extending the contact area of the sensor 40 with the adhesive 60 can balance the structural stability of the protective layer 30 and prolong the service life of the display 100.

One embodiment is shown in FIG. 9. The protective layer 30 is provided with a receiving cavity 70 on a surface facing away from the functional layer 20. The second surface 302 is a bottom surface of the receiving cavity 70. The receiving cavity 70 is matched with the outer shape of the sensor 40, and the receiving cavity 70 is configured to receive at least a portion of the sensor 40. In another embodiment, the protective layer 30 is provided with the receiving cavity 70 on a surface facing away from the functional layer 20, and a plurality of the through holes 50 are formed on a bottom surface of the receiving cavity 70. The cavity 70 is matched to the shape of the sensor 40 such that the sensor 40 is at least partially embedded in the receiving cavity 70. When the sensor 40 is received in the receiving cavity 70, the inner wall of the receiving cavity 70 can limit the outer wall of the sensor 40 to position the sensor 40 relative to the display panel 10.

Further, a gap fit is formed between the receiving cavity 70 and the sensor 40. A buffer layer 71 is filled in the gap between the inner wall of the housing chamber 70 and the outer wall of the sensor 40. The buffer layer 71 may provide buffer protection to the sensor 40 when the sensor 40 is subjected to an impact from the first direction 001 or the second direction 002. On the other hand, the buffer layer 71 is filled between the sensor 40 and the receiving cavity 70 to ensure the holding of the sensor 40 by the receiving cavity 70. Thereby a more accurate positioning of the sensor 40 is achieved.

The display 100 described in the present application does not limit the material of the buffer layer 71. Currently, commonly used cushioning materials such as rubber, resin, and the like can be applied to the embodiment shown in FIG. Of course, the buffer layer 71 can also use the adhesive 60 as a filling material. The adhesive 60 is filled in the gap between the receiving cavity 70 and the sensor 40, and the sensor 40 can be adhered to the receiving cavity 70, so that the receiving cavity 70 faces the sensor. 40 for more stable positioning and containment.

It can be understood that in all of the above embodiments, the sensor 40 is directly attached to the second surface 302. That is, the surface of the sensor 40 facing the functional layer is a first plane 41, and the first plane 41 is in direct contact with and attached to the second surface 302. At this time, the sensor 40 is directly in contact with the protective layer 30, and the overall thickness of the display 100 is controlled to a thin state in the stacking direction of the protective layer 30 and the functional layer 20, the display The volume of 100 is controlled.

Another embodiment is shown in FIG. 10. When the sensor 40 is received in the receiving cavity 70, the second surface 302, the inner wall of the receiving cavity 70, and the first plane 41 are in the receiving A receiving space 72 is enclosed in the cavity 70. The accommodating space 72 is filled with the adhesive 60. As can be seen from FIG. 10, the first plane 41 of the sensor 40 is completely in contact with the adhesive 60, and the contact area of the sensor 40 with the adhesive 60 reaches a maximum range. The sensor 40 can achieve the bonding with the protective layer 30 in a more secure manner, and the sensor 40 can be prevented from loosening or even falling off with respect to the protective layer 30 due to an external force.

In one embodiment, in order to provide a smoother signal path to the sensor 40, the through hole 50 extends perpendicularly between the first face 301 and the second face 302. Since the signal emitting direction of the sensor 40 is perpendicular to the first plane 41, the signal of the sensor 40 travels in a direction in which the protective layer 30 and the functional layer 20 are stacked, and the sensor 40 receives a signal. The direction is also perpendicular to the first plane 41. The vertically disposed through-hole 50 minimizes signal blocking of the sensor 40 during travel of the signal of the sensor 40, thereby enabling the signal of the sensor 40 to pass through the through-hole 50 more efficiently. It can be understood that the through hole 50 defined herein is vertically connected between the first surface 301 and the second surface 302, which means that the extending axis of the through hole 50 is perpendicular to the first surface 301. And the second face 302. When the through hole 50 is a straight hole, the axis of the straight hole needs to be perpendicular to the first plane 301 and the second plane 302; when the through hole 50 is a variable section through hole, the through hole The geometric center line of each section parallel to the first plane 41 is the extension axis of the through hole 50, in which case the extension axis is also required to be perpendicular to the first face 301 and the The second side 302.

For the adhesive 60, the adhesive 60 is required to have good penetrability, and the signal of the sensor 40 can transmit and receive signals through the adhesive 60 to form an interaction with the outside. It can be understood that the adhesive 60 can be disposed to approximate the color of the protective layer 30 to further improve the appearance consistency of the display 100. However, when the sensor 40 is an optical sensor, in order to reduce the barrier or energy attenuation of the adhesive 60, the adhesive 60 is preferably a transparent colloid, such as an OCA optical adhesive. Since the light transmittance of the OCA optical adhesive is higher than 85%, when the OCA optical adhesive is used, the adhesive 60 can achieve better support for the sensor 40 partially adopting the optical principle, and the sensor 40 is ensured. The light signal passed smoothly.

In the embodiment of FIG. 11, two sensors are provided in the display 100, that is, in addition to the aforementioned sensor 40, the display 100 is also provided with a second sensor 42. Correspondingly, a second bonding area 304 is also disposed on the protective layer 30. The second sensor 42 and the second bonding area 304 are also correspondingly matched with the cooperation of the sensor 40 and the bonding area 303, and the adhesive is achieved by the adhesive 60, and the The second sensor 42 also performs a signal receiving operation through the through hole 50 in the second bonding area 304. Since the current electronic devices require more and more integrated functions, the sensors 40 that need to be disposed on the back of the display 100 are correspondingly increased. Such a setting can integrate a plurality of the sensors 40 on the same display 100. To meet different functional needs. Of course, when the two sensors 40 are adjacently arranged, the bonding area 303 and the second bonding area 304 may be combined. When the receiving layer 70 is further disposed on the protective layer 30, It is also possible to communicate two separate housing chambers for processing, or to enable the sensor 40 to minimize the volume of space.

It can be understood that the sensor 40 and the second sensor 42 may be sensors of the same function, or may be sensors of different functions. On the other hand, the display 100 is not limited to the two solutions of the sensor 40, and more of the sensors 40 can be designed in the display 100 according to functional requirements, and the manner in the technical solution of the present application is adopted. A plurality of the sensors 40 are integrated on the back of the display 100.

Another embodiment is shown in FIG. 12, in the display area of the display panel, the bonding area 303 completely covers the display area of the display panel 10, that is, the bonding area 303 completely accommodates the display panel. 10 display area. Such an arrangement can implement a sensing function in the entire display area of the display panel 10. The embodiment of FIG. 12 can be applied to full-screen fingerprint unlocking of the electronic device 200, or an application scenario such as a non-touch full-screen hovering operation using a distance sensor on the screen.

The embodiments described above do not constitute a limitation on the scope of protection of the technical solutions. Any modifications, equivalent substitutions and improvements made within the principles of the above-described embodiments are intended to be included within the scope of the technical solutions.

Claims

A display comprising a display panel and a sensor, the display panel comprising a laminated functional layer and a protective layer, the front surface of the functional layer being a display surface, the protective layer being attached to the back of the functional layer The sensor is disposed on a side of the protective layer facing away from the functional layer, the protective layer is provided with a plurality of through holes, the plurality of through holes are filled with an adhesive, and the sensor passes the bonding The glue is bonded to the protective layer and the functional layer.
The display according to claim 1, wherein the surface of the protective layer that is bonded to the functional layer is a first surface, and the surface of the protective layer facing away from the functional layer is a second surface. A first opening is formed at a intersection of the hole and the first surface, and a second opening is formed at a intersection of the through hole and the second surface, the first opening being equal in area to the second opening.
The display according to claim 1, wherein the surface of the protective layer that is bonded to the functional layer is a first surface, and the surface of the protective layer facing away from the functional layer is a second surface. A first opening is formed at the intersection of the hole and the first surface, and a second opening is formed at the intersection of the through hole and the second surface, the area of the first opening being smaller than the area of the second opening.
The display according to any one of claims 1 to 3, wherein the protective layer is provided with a receiving cavity on a surface facing away from the functional layer, and a plurality of the through holes are formed on a bottom surface of the receiving cavity. The receiving cavity is matched with the shape of the sensor, and the sensor is at least partially embedded in the receiving cavity.
The display according to claim 4, wherein a gap fit is formed between the receiving cavity and the sensor, and the gap is filled with a buffer layer.
A display according to claim 4, wherein said adhesive is filled between said sensor and a bottom surface of said receiving chamber.
The display according to any one of claims 1 to 3, wherein the plurality of through holes are arranged in a plurality of rows and columns, and the through holes of each row are sequentially arranged in the first direction, and the rows are respectively arranged. The holes are sequentially arranged in the second direction, the first direction is perpendicular to the second direction, and one of the two adjacent rows of the through holes corresponds to one of the other columns The position between two adjacent through holes is set.
The display according to claim 7, wherein each of said through holes has a circular or elliptical cross section.
The display according to any one of claims 1 to 3, wherein the functional layer comprises a substrate, a light-emitting element, and a polarizer, which are sequentially stacked, and the substrate is bonded to the protective layer.
The display according to claim 9, wherein said protective layer comprises a buffer layer, a light shielding layer and a heat dissipation layer which are sequentially laminated, wherein said buffer layer is located between said light shielding layer and said substrate.
The display according to claim 10, wherein the protective layer is provided with a bonding area at a bonding position corresponding to the sensor, a plurality of the through holes are arranged in the bonding area, and the The vertical projection of the sensor on the protective layer is completely contained within the bonding area.
The display according to claim 10, wherein said display panel comprises a display area, said bonding area completely accommodating a display area of said display panel.
An electronic device, comprising: a processing unit and the display according to any one of claims 1 to 12, wherein the processing unit is electrically connected to the sensor in the display, the processing unit is configured to The sensor performs data interaction.