HK1237479A - Display screen, display device and mobile terminal - Google Patents

Description

Display screen, display device and mobile terminal

Technical Field

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

Background

With the rapid development of the information era, the information security problem is more and more emphasized by people. The mobile terminal is mostly provided with a fingerprint identification module for identifying fingerprints of mobile terminal users, so that the safety of the mobile terminal is improved. But the fingerprint identification module among the prior art is located outside the display area of display panel to avoid hindering the demonstration. However, due to the structural design, the screen occupation ratio of the display area (the proportion of the display area in the whole display screen) is smaller, and the user experience is influenced. Consequently, the adoption is with the mode that fingerprint module and display screen overlapped mutually and is set up, can improve the screen and account for than, however under this structure, the display screen can block the sensing signal of fingerprint module, and the efficiency that leads to fingerprint module collection fingerprint is not high, reduces user experience.

Disclosure of Invention

In view of the above problems, the present invention provides a display screen, a display device and a mobile terminal, which can improve the fingerprint collection efficiency of a fingerprint module.

In order to solve the problems in the background art, the invention provides a display screen which comprises a display layer and a shielding layer, wherein the display layer comprises an upper surface and a lower surface which are oppositely arranged, the upper surface faces a user, the shielding layer is arranged on the lower surface of the display layer in a stacking mode, the shielding layer is provided with an opening, and the opening is used for allowing a sensing signal of a fingerprint module to pass through.

The invention provides a display device which comprises the display screen, a fingerprint module and a middle frame, wherein the display screen and the fingerprint module are fixed on the middle frame, the fingerprint module is arranged on one side, away from the display layer, of the shielding layer and is positioned at a position corresponding to the opening, the fingerprint module comprises a light emitter and a light sensor, and light signals emitted by the light emitter and light signals received by the light sensor penetrate through the opening.

The invention also provides a mobile terminal comprising the display device.

The display screen provided by the embodiment of the invention comprises a display layer and a shielding layer, wherein the shielding layer is arranged on the lower surface of the display layer in a laminated manner, and the shielding layer is provided with the opening, so that the fingerprint module can send and collect sensing signals through the opening and the display layer, and the fingerprint collection efficiency of the fingerprint module is improved.

The display device provided by the embodiment of the invention comprises a display screen and a fingerprint module arranged below the display screen. The display screen comprises a display layer and a shielding layer, wherein the shielding layer is fixed on the lower surface of the display layer, and the shielding layer is provided with a hole. The fingerprint module is located with the corresponding position of trompil. The fingerprint module includes light emitter and photo sensor to so that the light signal that the light emitter launched passes through trompil and display layer conveying to finger line, and receive by the photo sensor through display layer and trompil after the reflection of hand fingerprint way, thereby realize the fingerprint identification function.

The mobile terminal provided by the embodiment of the invention comprises a display device, wherein the display device comprises a display screen and a fingerprint module arranged below the display screen. The display screen comprises a display layer and a shielding layer, wherein the shielding layer is fixed on the lower surface of the display layer, and the shielding layer is provided with a hole. The fingerprint module is located with the corresponding position of trompil. The fingerprint module includes light emitter and photo sensor to so that the light signal that the light emitter launched passes through trompil and display layer conveying to finger line, and receive by the photo sensor through display layer and trompil after the reflection of hand fingerprint way, thereby realize the fingerprint identification function.

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 cross-sectional structure diagram of a display screen according to an embodiment of the present invention.

Fig. 2 is a top view of a display screen according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a display screen according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a display screen according to a first embodiment of the present invention.

Fig. 5 is a cross-sectional view of a light-shielding sheet according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a display screen according to a second embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a display screen according to a third embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a display device according to a fourth embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a display device according to a fifth embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a display device according to a sixth embodiment of the invention.

Fig. 11 is a schematic structural diagram of a display device according to a seventh embodiment of the invention.

Fig. 12 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, fig. 1 is a display screen 100 according to an embodiment of the invention. The display screen 100 includes a display layer 110 and a blocking layer 120. The display layer 110 includes an upper surface 111 and a lower surface 112 disposed opposite to each other, and the upper surface 111 of the display layer 110 is disposed toward a user. The blocking layer 120 is fixed to the lower surface 112 of the display layer 110. In one embodiment, the shielding layer 120 is a light shielding layer, and the shielding layer 120 is attached to the lower surface 112 of the display layer 110 for shielding light from passing through the display layer 110 to hide the internal structure under the display layer 110, and displaying the color of the shielding layer 120 when the display layer 110 is not emitting light. The shielding layer 120 is provided with an opening 121, and the opening 121 is used for transmitting the sensing signal of the fingerprint module. In this embodiment, the fingerprint module is optical fingerprint identification module. The opening 121 is used for transmitting and receiving optical signals through the fingerprint module.

Referring to fig. 2, the display layer 110 according to the embodiment of the present application is a portion of the display screen 100 for displaying an image. The display screen 100 may further include a non-display layer 113 disposed around the display layer 110. The non-display layer 113 surrounds the display layer 110, and can be used for installing some electronic components which are not arranged on the display layer 110, such as a camera module, a loudspeaker, a receiver and the like.

It can be understood that the display layer 110 according to the embodiment of the present disclosure is a transparent layer, so that the fingerprint module can transmit and receive optical signals through the display layer 110. Since the display layer 110 is a transparent layer, a shielding layer 120 is generally disposed below the display layer 110 to prevent electronic circuits and other structures below the display screen 100 from being seen. The shielding layer 120 may be a light shielding foam layer or an opaque ink layer. The shielding layer 120 may hide structures such as electronic circuits under the display screen 100, and make the display layer 110 show the color of the shielding layer 120 when the display screen 100 is not emitting light. The shielding layer 120 may be black, white, or other colors.

Referring to fig. 3, the display layer 110 includes an upper cover plate 114, a touch sensing layer 115, an organic light emitting layer 116, and a lower cover plate 117 stacked in sequence. The shielding layer 120 may be attached to the lower cover plate 117. In one embodiment, the shielding layer 120 is an opaque ink layer. The opaque ink layer 120 is provided with an opening 121, that is, a patterned opaque ink layer is provided on the lower cover plate 117, and the patterned opaque ink layer can be formed on the lower cover plate 117 by printing, spin coating, or evaporation. In another embodiment, the shielding layer 120 is a foam layer, and the foam layer 120 can play a role in buffering and damping between the lower cover plate 117 and other electronic components. The foam layer 120 may be attached to the lower cover plate 117 by a sealant. The opening 121 may be formed on the foam layer after the foam layer is processed, or may be formed during the foam layer processing.

Further, the openings 121 may be circular holes, square holes, elliptical holes, or irregular holes. The irregularly shaped apertures may be shaped to accommodate the contact surface of the finger print surface in contact with the display screen 100.

Further, referring to fig. 4, the display screen 100 further includes a light shielding sheet 130. The light shielding sheet 130 is stacked between the display layer 110 and the fingerprint module, and covers the opening 121 to hide the fingerprint module, thereby increasing the visual effect of the display screen 100. Specifically, the light shielding sheet 130 covers the opening 121, and can transmit the optical signal, so that the fingerprint module disposed under the opening 121 can transmit and receive the optical signal, and can reflect light to hide the fingerprint module. Preferably, the color of the light reflected by the light shielding sheet 130 is the same as the color of the light reflected by the shielding layer 120, so that when the display layer 110 is in a non-display state, such as a screen-off state of the mobile terminal, the display color of the area of the opening 121 of the shielding layer 120 is the same as that of the area of the non-opening 120, thereby reducing the visual impact on the user caused by the opening 121 and enhancing the user experience.

In one embodiment, referring to fig. 5, the light shielding sheet 130 includes light shielding pigments 131 and light transmissive materials 132. The color of the light-shielding pigment 131 is similar to the color of the shielding layer 120, and it can be understood that the color of the light-shielding pigment 131 is perceived by the user with the naked eye to be the same as the color of the shielding layer 120. The shielding layer 120 may be black, white or other colors, and accordingly, the light shielding pigment 131 may also be black, white or other colors. Specifically, when the shielding layer 120 is black, the color of the light-shielding pigment 131 is also black, so that the opening 121 area and the non-opening area 120 of the shielding layer 120 are consistent in color, and the visual effect is reduced.

The light-transmitting material 132 forms a light-transmitting channel 133, the light-transmitting channel 133 is along the thickness direction of the display screen 100, and the fingerprint module transmits or receives light signals through the light-transmitting channel 133. The light-transmitting channel 133 increases light transmittance of the light-shielding sheet 130. The luminousness increase of anti-dazzling screen 130 makes the fingerprint module launch the transmittance increase to the incident light of finger line, and then follows the intensity increase of the reflection light of finger line, and can also improve the transmittance of reflection light to improve fingerprint identification's accuracy.

The light-transmitting material 132 may be a transparent material such as resin particles, glass powder, or a mixture of resin particles and glass powder, which has a certain light-transmitting property and allows light (indicated by arrows in fig. 7) to pass through. The light-transmitting material 132 is added to the light-shielding sheet 130, so that the light-shielding sheet 130 can have increased light-transmitting properties. The light-transmitting material 132 is granular, and if the granules of the light-transmitting material 132 are too small, light transmission cannot be realized; if the particles of the light-transmitting material 132 are too large, the color difference between the light-shielding sheet 130 and the shielding layer 120 will be generated. Therefore, optionally, the particle size of the light-transmitting material 132 is 1 to 20 micrometers. Further, if the proportion of the light-transmitting material 132 in the light-shielding sheet 130 is too low, the light-transmitting property of the light-shielding sheet 130 cannot be effectively increased; if the proportion of the light-transmitting material 132 is too high, the color of the light-shielding sheet 130 is affected. Therefore, the light-transmitting material 132 accounts for 1-20% of the light-shielding sheet 130 by mass.

Further, the light shielding sheet 130 may be prepared as a film or a sheet having the light transmitting channel 133 and then attached to the substrate to be attached by an optical adhesive. The light-transmitting channel 133 is formed on the film or sheet of the light-shielding sheet 130, and does not affect the display screen 110.

First embodiment

Referring to fig. 4, the light shielding sheet 130 is stacked between the display layer 110 and the shielding layer 120. Specifically, the light shielding sheet 130 may be attached to the lower cover plate 117 of the display layer 110, or the light shielding sheet 130 may be attached to the upper surface 122 of the shielding layer 120. In this embodiment, the light shielding sheet 130 is disposed between the display layer 110 and the shielding layer 120, and such a structural design enables the lower cover plate 117 of the display layer 110 to serve as a substrate to be attached to the light shielding sheet 130, so that the light shielding sheet 130 is formed on the lower surface of the lower cover plate 117, the structure of the display screen 100 can be prevented from being damaged, and the manufacturing process and cost of the light shielding sheet 130 can be simplified.

Second embodiment

Referring to fig. 6, the light shielding sheet 130 is fixed on the first surface 123 of the shielding layer 120, and the first surface 123 is disposed on a side away from the display layer 110. In this embodiment, the light shielding sheet 130 is disposed on a side of the shielding layer 120 far from the display layer 110, and the structure design can fix the shielding layer 120 on the display layer 110 and then attach the light shielding sheet 130, that is, the position and shape of the opening 121 are determined and then attach the light shielding sheet 130, so that the accuracy of covering the opening 121 by the light shielding sheet 130 can be improved and the difficulty of covering the opening 121 by the light shielding sheet 130 can be reduced.

Third embodiment

Referring to fig. 7, the light shielding sheet 130 is filled in the opening 121. In one embodiment, the light-shielding sheet 130 is filled in the opening 121, that is, the size and shape of the light-shielding sheet 130 are the same as those of the opening 121, and the light-shielding sheet 130 and the shielding layer 120 are on the same layer and have the same thickness, and such a structure design enables the light-shielding sheet 130 and the shielding layer 120 to be on the same layer, thereby greatly reducing the thickness of the light-shielding sheet 130 and the shielding layer 120 on the one hand, improving the flatness of the shielding layer 120, further reducing the thickness of the display screen 100, and promoting the development of light weight and thin weight of the mobile terminal.

Referring to fig. 8, a display device 200 according to a fourth embodiment of the present invention includes the display screen 100 according to any of the above embodiments, and further includes a fingerprint module 210 and a middle frame 211. The display screen 100 and the fingerprint module 210 are fixed to the middle frame 211. The fingerprint module 210 is disposed on a side of the shielding layer 120 away from the display layer 110, and is located at a position corresponding to the opening 121. The fingerprint module 210 includes a light emitter 213 and a light sensor 212, and the light signal emitted by the light emitter 213 and the light signal received by the light sensor 212 pass through the opening 121. Understandably, the fingerprint module 210 is an optical fingerprint identification module. The light emitter 213 may be a light source such as an LED, and is used to transmit the incident light a to the finger print 214. The LED light source may be disposed at a position corresponding to the light-transmitting channel 133, or the LED light source may be converted into a surface light source through a light guide plate to increase the transmittance of incident light in the light-shielding sheet 130. The light sensor 212 may be a light sensitive sensor for receiving the reflected light b formed by the finger print 214. The light sensor 212 is fixed on the top of the fingerprint module 210, i.e. near the opening 121.

When a finger presses on the display screen 100, the light emitted by the light emitter 213 forms incident light a. The incident light a is projected to the finger print 214 through the photo sensor 212, the opening 121 and the display layer 110. Reflected light b is formed after being reflected by the finger print 214, the reflected light b is received by the light sensor 212, and the reflected light b is processed to obtain a fingerprint image of the finger print 214.

In one embodiment, referring to fig. 5, the display screen 100 further includes a light shielding sheet 130. The light shielding sheet 130 is stacked between the display layer 110 and the fingerprint module, and covers the opening 121 to hide the fingerprint module 210, thereby increasing the visual effect of the display screen 100. The light shielding sheet 130 comprises light shielding pigments 131 and light transmitting materials 132, the light transmitting materials 132 form light transmitting channels 133, the light transmitting channels 133 are along the thickness direction of the display screen 100, and the fingerprint module 210 transmits or receives light signals through the light transmitting channels 133. The light-transmitting channel 133 increases light transmittance of the light-shielding sheet 130. The color of the light shielding pigment 131 is similar to that of the shielding layer 120, reducing the visual impact.

Referring to fig. 9, when a finger contacts the surface of the display screen 100, the light emitted from the light emitter 213 forms an incident light a, and the incident light a passes through the light sensor 212, the light shielding sheet 130, the opening 121, and the display layer 110 in sequence and then is projected onto the finger print 214. Since the light-transmitting material 132 is added to the light-shielding sheet 130, the light-transmitting material 132 can enhance the transmittance of the light-shielding sheet 130. Therefore, the influence of the light shielding film 130 on the incident light a is small, and the intensity of the incident light a projected onto the finger print 214 is large. Accordingly, the intensity of the reflected light b formed by the incident light a reflected by the fingerprint path 214 is also large. In addition, the reflected light b reflected by the fingerprint path 214 passes through the display layer 110, the opening 121, and the light shielding sheet 130 in sequence and is projected to the photo sensor 212, and the photo sensor 212 receives and forms a fingerprint image.

Fifth embodiment

Referring to fig. 9, the light shielding sheet 130 is stacked between the display screen 100 and the fingerprint module 210. Specifically, the light shielding sheet 130 is stacked between the bottom 215 of the middle frame 211 and the shielding layer 120.

Sixth embodiment

Referring to fig. 10, the light shielding sheet 130 is fixed between the display screen 100 and the fingerprint module 210. Specifically, the fingerprint module 210 includes a second surface 216, the second surface 216 is close to the opening 121, and the light shielding sheet 130 may be attached to the second surface 216.

Seventh embodiment

Referring to fig. 11, the light shielding plate 130 is disposed in the opening 121. The light-shielding sheet 130 can be filled in the opening 121, that is, the size and shape of the light-shielding sheet 130 are the same as those of the opening 121, and the light-shielding sheet 130 and the shielding layer 120 are on the same layer and have the same thickness. The orthographic projection of the light shielding sheet 130 on the fingerprint module 210 covers the light sensor 212 and the light emitter 213, so that the incident light emitted by the light emitter 213 is transmitted to the finger print 214 through the opening 121 and the light shielding sheet 130, and the light reflected by the finger print 214 can be projected to the light sensor 212 through the opening 121 and the light shielding sheet 130.

Referring to fig. 12, an embodiment of the invention provides a mobile terminal 300 including the display device 200 according to any of the above embodiments.

According to the display screen 100, the display device 200 and the mobile terminal 300 provided by the embodiment of the invention, the display device 200 comprises the display screen 100 and the fingerprint module 210 arranged below the display screen 100. The display screen 100 includes a display layer 110 and a shielding layer 120, the shielding layer 120 is fixed on the lower surface 112 of the display layer 110, and the shielding layer 120 is provided with an opening 121. The fingerprint module 210 is located at a position corresponding to the opening 121. The fingerprint module 210 comprises a light emitter 213 and a light sensor 212, wherein a light signal emitted by the light emitter 213 is transmitted to the finger print 214 through the opening 121 and the display layer 110, and is reflected by the fingerprint path 214 and then received by the light sensor 212 through the display layer 110 and the opening 121, so that the fingerprint collection and identification efficiency of the fingerprint module 210 is improved. In addition, cover through setting up light-shielding sheet 130 the trompil 121 to hide fingerprint module 210 reduces the visual effect that trompil 121 caused to the user, reinforcing user experience.

In summary, although the present invention has been described with reference to the preferred embodiments, the present invention is not limited to the preferred embodiments, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention is defined by the appended claims.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a display screen, its characterized in that, includes display layer and shielding layer, the display layer is including relative upper surface and the lower surface that sets up, the upper surface sets up towards the user, shielding layer stack-up set up in the lower surface on display layer, shielding layer is equipped with the trompil, the trompil is used for seeing through the sensing signal of fingerprint module.

2. The display screen of claim 1, wherein the blocking layer is a light blocking layer for blocking light from passing through the display layer, the fingerprint module is an optical fingerprint module, and the opening is used for transmitting and receiving optical signals through the fingerprint module.

3. The display screen of claim 2, further comprising a light shielding sheet, wherein the light shielding sheet is stacked between the display layer and the fingerprint module and covers the opening; the shading sheet comprises shading pigment and a light-transmitting material, the light-transmitting material forms a light-transmitting channel, the fingerprint module transmits or receives light signals through the light-transmitting channel, and the color of the shading pigment is similar to that of the shading layer.

4. The display screen of claim 3, wherein the light blocking sheet is laminated between the display layer and the blocking layer.

5. The display screen of claim 3, wherein the blocking layer has a first surface away from the display layer, and the light blocking sheet is attached to the first surface of the blocking layer.

6. The display screen of claim 3, wherein the light shield is disposed in the opening.

7. A display device, comprising the display screen of claim 1, further comprising a fingerprint module and a middle frame, wherein the display screen and the fingerprint module are fixed to the middle frame, the fingerprint module is disposed on a side of the shielding layer away from the display layer and located at a position corresponding to the opening, the fingerprint module comprises a light emitter and a light sensor, and a light signal emitted by the light emitter and a light signal received by the light sensor pass through the opening.

8. The display device according to claim 7, further comprising a light shielding sheet stacked between the display layer and the fingerprint module and covering the opening; the shading sheet comprises shading pigment and a light-transmitting material, the light-transmitting material forms a light-transmitting channel, the fingerprint module transmits or receives light signals through the light-transmitting channel, and the color of the shading pigment is similar to that of the shading layer.

9. The display device according to claim 8, wherein the fingerprint module has a second surface adjacent to the opening, and the light shielding sheet is attached to the second surface.

10. A mobile terminal characterized by comprising the display device according to any one of claims 7 to 9.