CN112349859A - Display module and electronic terminal - Google Patents

Display module and electronic terminal Download PDF

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Publication number
CN112349859A
CN112349859A CN201910728534.9A CN201910728534A CN112349859A CN 112349859 A CN112349859 A CN 112349859A CN 201910728534 A CN201910728534 A CN 201910728534A CN 112349859 A CN112349859 A CN 112349859A
Authority
CN
China
Prior art keywords
self
display panel
cover plate
display module
emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201910728534.9A
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Chinese (zh)
Inventor
关赛新
肖德塘
李宗政
周祥禾
陈冠宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanchang OFilm Biometric Identification Technology Co Ltd
Original Assignee
Nanchang OFilm Biometric Identification Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanchang OFilm Biometric Identification Technology Co Ltd filed Critical Nanchang OFilm Biometric Identification Technology Co Ltd
Priority to CN201910728534.9A priority Critical patent/CN112349859A/en
Publication of CN112349859A publication Critical patent/CN112349859A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The application discloses display module assembly and electronic terminal. The display module assembly includes: the self-luminous display panel comprises an emitting piece, a diffusion piece, a self-luminous display panel and a cover plate which are arranged in a stacked mode; the emitting piece is arranged on one side of the self-luminous display panel, which is far away from the cover plate; the emitting piece is used for emitting infrared rays towards the self-luminous display panel and the cover plate; the diffusion piece is clamped between the self-luminous display panel and the cover plate and is arranged in an alignment way with the emitting piece; the diffusion piece is used for receiving infrared light transmitted from the self-luminous display panel, uniformly diffusing the infrared light to the cover plate, and emitting the infrared light to the outside through the cover plate so as to irradiate the object to be detected and obtain depth information of the object to be detected.

Description

Display module and electronic terminal
Technical Field
The application relates to the technical field of fingerprint identification, in particular to a display module and an electronic terminal.
Background
In the module for acquiring depth information by using the time-of-flight ranging method, an infrared light source is normally arranged on a circuit board, and light emitted by the infrared light source is diffused by a diffusion piece and then emitted. To support the diffuser, additional glass slides are provided. However, when the glass slide is assembled, the glass slide needs to be mutually avoided from the display panel, which is not beneficial to the smooth assembly; on the other hand, because dodge between glass slide and the display panel, it is great also to have leaded to the module thickness after the equipment for the use of module is experienced poorly.
Disclosure of Invention
An object of this application is to provide a display module assembly and electronic terminal to solve the great problem of the thickness that possesses the degree of depth information acquisition function display module assembly of normality.
In order to solve the technical problem, the application provides a display module. The display module assembly includes: the self-luminous display panel comprises an emitting piece, a diffusion piece, a self-luminous display panel and a cover plate which are arranged in a stacked mode; the emitting piece is arranged on one side of the self-luminous display panel, which is far away from the cover plate; the emitting piece is used for emitting infrared rays towards the self-luminous display panel and the cover plate; the diffusion piece is clamped between the self-luminous display panel and the cover plate and is arranged in an alignment mode with the emitting piece;
the diffusion piece is used for receiving infrared light transmitted from the self-luminous display panel, uniformly diffusing the infrared light to the cover plate, and emitting the infrared light to the outside through the cover plate so as to irradiate an object to be detected and obtain depth information of the object to be detected.
In one embodiment, the display module further comprises a circuit board; the emitting member is disposed on the circuit board, and the emitting member is disposed between the self-luminous display panel and the circuit board.
In one embodiment, the diffuser is disposed on a surface of the cover plate facing the self-luminous display panel, and a projection of the diffuser on the circuit board covers the emitter.
In one embodiment, the diffuser is disposed on a surface of the self-luminous display panel facing the cover plate, and a projection of the diffuser on the circuit board covers the emitter.
In one embodiment, the diffusion member is disposed on a surface of the cover plate facing the self-luminous display panel, the self-luminous display panel is hollowed in a region corresponding to the emission member to form a hollowed-out region, and the hollowed-out region is at least opposite to a portion of the diffusion member; at least part of the infrared light is incident to the diffusion piece through the hollow area.
In one embodiment, the diffusion member is formed on the cover plate or the self-luminous display panel by an etching process or a nanoimprint process.
In one embodiment, the display module further includes a bracket disposed between the circuit board and the self-luminous display panel, and the emitter is disposed in the bracket.
In one embodiment, the display module further comprises a receiving element, and the receiving element and the emitting element are arranged on the circuit board at intervals; wherein, the receiving piece is used for receiving the infrared light.
In one embodiment, the self-luminous display panel is an OLED display panel.
The application also provides an electronic terminal which comprises the display module in each embodiment.
According to the self-luminous display panel and the manufacturing method thereof, the diffusion piece is arranged on the self-luminous display panel or the cover plate through an etching process or a nano-imprinting process, so that an additional supporting structure for bearing the diffusion piece can be omitted. And then can reduce the thickness of display module assembly, improve display module assembly's integrated level and reduce the material cost that is brought by this bearing structure.
Drawings
Fig. 1 is a schematic view of a display module according to an embodiment of the present application.
Fig. 2 is an exploded view of a display module according to an embodiment of the present application.
Fig. 3 is an exploded view of a display module according to another embodiment of the present disclosure.
Fig. 4 is a schematic front view of an electronic terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The embodiment of the application provides a display module 100 and an electronic terminal 10 using the display module 100; the display module 100 is configured to emit and receive reflected infrared light, and further obtain depth information of an object to be measured. The measurement method adopted by the display module 100 may include a time of Flight (TOF) method.
Referring to fig. 1 to fig. 3, in an embodiment, the display module 100 includes: the light emitting device includes an emitting member 110, a diffusing member 120, and a circuit board 130, a self-luminous display panel 140, and a cover plate 150, which are sequentially stacked. The emitting member 110 is disposed on the circuit board 130, and the emitting member 110 is located between the circuit board 130 and the self-luminous display panel 140. Wherein, the emitting member 110 is used for emitting infrared light toward the direction of the self-luminous display panel 140 and the cover plate 150.
The diffuser 120 is sandwiched between the self-luminous display panel 140 and the cover plate 150, and is aligned with the emitter 110. The emitting member 110 and the diffusing member 120 are aligned such that the diffusing member 120 is located above the emitting member 110, and the diffusing member 120 can be used for receiving the infrared light transmitted from the light emitting display panel 140 and uniformly diffusing the infrared light to the cover plate 150; and the infrared light is emitted to the outside of the cover plate 150 through the cover plate 150 to irradiate the object to be measured so as to obtain the depth information of the object to be measured.
Accordingly, the design of the diffuser 120 sandwiched between the self-luminous display panel 140 and the cover plate 150 can eliminate an additional support structure (not shown) for carrying the diffuser 120, which may be a glass slide or other transparent slide. Further, the diffuser 120 is sandwiched between the self-luminous display panel 140 and the cover plate 150, so that the thickness of the display module 100 can be reduced, the integration level of the display module 100 can be improved, and the material cost can be reduced.
The cover plate 150 disposed on the self-emitting display panel 140 is used for protecting the self-emitting display panel 140. Specifically, the cover plate 150 may be made of glass, ceramic, or the like, and is attached to the self-luminous display panel 140 after being manufactured and molded.
In one embodiment, as shown in fig. 2, the diffuser 120 is disposed on the surface of the cover plate 150 facing the self-luminous display panel 140, and the projection of the diffuser 120 on the circuit board 130 covers the emitter 110. Wherein, the diffusion member 120 is formed on the surface of the cover plate 150 facing the self-luminous display panel 140 by an etching process or a nano-imprinting process; thereby, the diffusion member 120 is sandwiched between the self-luminous display panel 140 and the cover plate 150, and the diffusion member 120 is correspondingly disposed above the emitting member 110.
In another embodiment, as shown in fig. 3, the diffusion member 120 is disposed on a surface of the self light emitting display panel 140 facing the cover plate 150, and a projection of the diffusion member 120 on the circuit board 130 covers the emitting member 110, unlike the structure in which the diffusion member 120 is disposed on the cover plate 150. Wherein the diffusion member 120 is formed on the self-luminous display panel 140 by an etching process or a nano-imprinting process; thereby, the diffusion member 120 is sandwiched between the self-luminous display panel 140 and the cover plate 150, and the diffusion member 120 is correspondingly disposed above the emitting member 110.
In another embodiment, the diffuser 120 is disposed on a surface of the cover plate 150 facing the self-luminous display panel 140, and the self-luminous display panel 140 is hollowed out in a region corresponding to the emitting member 110 to form a hollowed-out region (not shown), wherein the hollowed-out region is at least opposite to a portion of the diffuser 120. At least a portion of the infrared light emitted from the emitting element 110 is incident to the diffusing element 120 through the hollow area.
It should be understood that the projection of the diffuser 120 on the circuit board 130 covers the projection of the hollow area on the circuit board 130; thus, at least a portion of the infrared light emitted from the emitting member 110 can be directly incident into the diffusing member 120 through the hollow area without penetrating through the self-luminous display panel 140.
In one embodiment, all of the infrared light emitted from the emitting element 110 is directly incident into the diffusing element 120 through the hollow area. Therefore, the light loss caused by the infrared light penetrating through the self-luminous display panel 140 can be reduced or avoided, and the accuracy of the display module 100 for acquiring the depth information of the object to be measured can be further improved.
In one embodiment, the infrared light emitted from the emitting element 110 passes through the self-luminous display panel 140 and is incident on the diffusing element 120, and the diffusing element 120 uniformly diffuses the infrared light to the cover plate 150 and the outer side of the cover plate 150. It should be understood that the outer side of the cover plate 150 is the side of the cover plate 150 away from the self-luminous display panel 140; the diffusion member 120 uniformly diffuses the infrared light out of the display module 100, and further obtains the depth information of the object to be measured by a time-of-flight ranging method.
In some embodiments, such as the embodiment shown above, the diffuser 120 does not need an additional glass slide to be carried, but the diffuser 120 is sandwiched between the self-luminous display panel 140 and the cover plate 150. Therefore, the diffuser 120 does not interfere with the structure of the self-luminous display panel 140 or the cover plate 150 due to the additional glass slide. Furthermore, the self-emitting display panel 140 does not need to have a cutout (e.g., a cutout screen) or a notch (e.g., a bang screen or a drip screen) to accommodate the additional glass slide. Accordingly, by disposing the diffuser 120 on the self-luminous display panel 140 or the cover plate 150, the thickness of the display module 100 can be reduced, and the display module 100 and the electronic terminal 10 can be made thinner.
In some embodiments, since the diffusion member 120 is disposed on the self-luminous display panel 140 or the cover plate 150, and the diffusion member 120 may be disposed on any region of the self-luminous display panel 140 or the cover plate 150, the circuit board 130 is disposed on the emission member 110 corresponding to the region of the diffusion member 120. Such as: the diffuser 120 may be located at a region near the bottom of the self-light emitting display panel 140 or the cover plate 150.
In some embodiments, the emitter 110 is disposed on the circuit board 130, and the circuit board 130 further has disposed thereon electronic components such as a processor; that is, the emitter 110 and the electronic components such as the processor have a predetermined mounting position on the circuit board 130. Specifically, the display module 100 may be provided with the diffuser 120 at a corresponding position on the self-luminous display panel 140 or the cover plate 150 according to the position of the emitting element 110 on the circuit board 130.
Referring to fig. 1 and 4, in one embodiment, the diffuser 120 is located in a region of the electronic terminal 10 near the bottom. Therefore, the infrared light emitted by the emitting element 110 passes through the diffusing element 120 near the bottom, and is further uniformly diffused out of the display module 100 of the electronic terminal 10; further, the infrared light is blocked and reflected by the object to be measured and can be received by a receiving part (not shown) of the display module 100, and then the processor of the electronic terminal 10 processes the reflected infrared light to obtain the depth information of the object to be measured.
It should be understood that in other embodiments, the diffuser 120 may be located in the area near the top or other area of the self-luminous display panel 140 or the cover plate 150.
In some embodiments, the area of the diffusion member 120 projected by the infrared light emitted from the emitting member 110 is a first area, and the area of the diffusion member 120 itself is a second area. It should be understood that the second area is larger than the first area. Further, the emitting element 110 is approximately located at the center of the projection of the diffusing element 120 on the circuit board 130, so that the infrared light emitted by the emitting element 110 can be uniformly diffused into a surface light source, and further emitted to the outer side of the cover plate 150.
In one embodiment, the emitting member 110 and the diffusing member 120 form a TOF transmitter that emits infrared light as infrared pulsed light. The infrared pulse light may have a waveform such as a pulse square wave.
In one embodiment, as shown in fig. 1 to 3, the display module 100 further includes a bracket 160. The support 160 is disposed between the circuit board 130 and the self-luminous display panel 140, and the emitting member 110 is disposed within the support 160. The material of the bracket 160 is, for example, ceramic.
It should be understood that the stand 160 serves to support the self-light emitting display panel 140 and maintain a distance between the circuit board 130 and the self-light emitting display panel 140. Further, since the stand 160 does not need to be provided with a step surface for carrying an additional glass slide and the diffusion member 120, it is possible to reduce the height of the stand 160 and to reduce the distance between the circuit board 130 and the self-luminous display panel 140; furthermore, the thickness of the display module 100 and the electronic terminal 10 can be reduced, and the weight of the display module 100 and the electronic terminal 10 can be reduced, so as to improve the user experience.
In one embodiment, the display module 100 further includes a receiving element (not shown) spaced apart from the emitting element 110 on the circuit board 130; the receiving piece is used for receiving infrared light reflected by the object to be measured.
In some embodiments, the self-light emitting display panel 140 may be an OLED (organic light emitting diode) display panel, for example. Specifically, by increasing the emission power of the emitting element 110, the efficiency of the infrared light emitted by the emitting element 110 penetrating through the self-luminous display panel 140 is increased, and thus, the light loss caused by the poor penetration rate of the self-luminous display panel 140 is compensated.
Referring to fig. 1 to fig. 4, the present application further provides an electronic terminal 10, where the electronic terminal 10 includes the display module 100 shown in the above embodiments. The electronic terminal 10 can obtain the depth information of the object to be detected through the display module 100, and further realize the functions of face recognition, fingerprint recognition and the like. Specifically, the electronic terminal may be, for example, a mobile phone or a tablet computer.
It should be understood that in the electronic terminal 10 of fig. 4, the area of the diffuser 120 is exaggerated and the proportional relationship between the diffuser 120 and the electronic terminal 10 should not be defined thereby. Specifically, the diffuser 120 may have a size of only a few square millimeters, which may have little effect on the display effect of the electronic terminal 10.
In one embodiment, when the emitting member 110 does not emit infrared light, the portion of the self-luminous display panel 140 corresponding to the diffusing member 120 may display information such as clock or temperature, so as to further reduce the influence on the display effect of the electronic terminal 10.
While the foregoing is directed to embodiments of the present application, it will be appreciated by those skilled in the art that various changes and modifications may be made without departing from the principles of the application, and it is intended that such changes and modifications be covered by the scope of the application.

Claims (10)

1. The utility model provides a display module assembly, its characterized in that, display module assembly includes: the self-luminous display panel comprises an emitting piece, a diffusion piece, a self-luminous display panel and a cover plate which are arranged in a stacked mode;
the emitting piece is arranged on one side of the self-luminous display panel, which is far away from the cover plate; the emitting piece is used for emitting infrared rays towards the self-luminous display panel and the cover plate;
the diffusion piece is clamped between the self-luminous display panel and the cover plate and is arranged in an alignment mode with the emitting piece; the diffusion piece is used for receiving infrared light transmitted from the self-luminous display panel, uniformly diffusing the infrared light to the cover plate, and emitting the infrared light to the outside through the cover plate so as to irradiate an object to be detected and obtain depth information of the object to be detected.
2. The display module of claim 1, wherein the display module further comprises a circuit board; the emitting member is disposed on the circuit board, and the emitting member is disposed between the self-luminous display panel and the circuit board.
3. The display module of claim 2, wherein the diffuser is disposed on a surface of the cover plate facing the self-luminous display panel, and a projection of the diffuser on the circuit board covers the emitter.
4. The display module of claim 2, wherein the diffuser is disposed on a surface of the self-luminous display panel facing the cover plate, and a projection of the diffuser on the circuit board covers the emitter.
5. The display module of claim 2, wherein the diffuser is disposed on a surface of the cover plate facing the self-luminous display panel, the self-luminous display panel is hollowed out in a region corresponding to the emitter to form a hollowed-out region, and the hollowed-out region is at least opposite to a portion of the diffuser; at least part of the infrared light is incident to the diffusion piece through the hollow area.
6. The display module according to any one of claims 3 to 5, wherein the diffuser is formed on the cover plate or the self-luminous display panel by an etching process or a nanoimprint process.
7. The display module of claim 2, wherein the display module further comprises a support disposed between the circuit board and the self-emissive display panel, the emitter being disposed within the support.
8. The display module according to claim 2, wherein the display module further comprises a receiving element, and the receiving element and the emitting element are arranged on the circuit board at intervals; wherein, the receiving piece is used for receiving the infrared light.
9. The display module of claim 1, wherein the self-luminous display panel is an OLED display panel.
10. An electronic terminal, comprising: the display module of any one of claims 1 to 9.
CN201910728534.9A 2019-08-08 2019-08-08 Display module and electronic terminal Withdrawn CN112349859A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910728534.9A CN112349859A (en) 2019-08-08 2019-08-08 Display module and electronic terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910728534.9A CN112349859A (en) 2019-08-08 2019-08-08 Display module and electronic terminal

Publications (1)

Publication Number Publication Date
CN112349859A true CN112349859A (en) 2021-02-09

Family

ID=74367348

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910728534.9A Withdrawn CN112349859A (en) 2019-08-08 2019-08-08 Display module and electronic terminal

Country Status (1)

Country Link
CN (1) CN112349859A (en)

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Address after: 330096 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province

Applicant after: Jiangxi OMS Microelectronics Co.,Ltd.

Address before: 330096 Jiangxi Nanchang Nanchang hi tech Industrial Development Zone, east of six road, south of Tianxiang Avenue.

Applicant before: OFilm Microelectronics Technology Co.,Ltd.

Address after: 330096 Jiangxi Nanchang Nanchang hi tech Industrial Development Zone, east of six road, south of Tianxiang Avenue.

Applicant after: OFilm Microelectronics Technology Co.,Ltd.

Address before: 330029 No. 1189 Jingdong Avenue, Nanchang high tech Zone, Jiangxi

Applicant before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd.

SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
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Application publication date: 20210209