CN110137234B - Display screen and mobile terminal - Google Patents
Display screen and mobile terminal Download PDFInfo
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- CN110137234B CN110137234B CN201910471385.2A CN201910471385A CN110137234B CN 110137234 B CN110137234 B CN 110137234B CN 201910471385 A CN201910471385 A CN 201910471385A CN 110137234 B CN110137234 B CN 110137234B
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- display screen
- fingerprint identification
- substrate
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- light
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- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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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
- H10K50/87—Arrangements for heating or cooling
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- 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
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
Abstract
The invention discloses a display screen and a mobile terminal, wherein the display screen comprises a first substrate and an anode layer, the anode layer comprises a first part and a second part which are connected, the first part and the second part are both arranged on the first substrate, the display screen is provided with a fingerprint identification area, the first part is positioned in the fingerprint identification area and is made of heat conduction materials, and the heat conduction coefficient of the first part is greater than that of the second part. When the fingerprint identification region produces the heat, the first portion can be derived the heat more fast for the heat is difficult to gather in the regional department of fingerprint identification, and quick ageing is difficult to appear in the structure that is located the fingerprint identification region in the display screen, makes the display screen basically have the same display effect in fingerprint identification region and other regions. Therefore, the display screen has better display effect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display screen and a mobile terminal.
Background
The fingerprint module is one of mobile terminal's core component, and along with the continuous development of mobile terminal trade, people are more and more high to the performance requirement of fingerprint module, and this just brings great challenge for the structural design of fingerprint module.
The structural style of fingerprint module is more various, can set up the outward appearance feel that can promote mobile terminal in the optics fingerprint module of display screen below, therefore this kind of fingerprint module has obtained more and more extensive application. Be equipped with the fingerprint identification region on the display screen, the user can place the finger in this fingerprint identification region, and user's fingerprint information can be discerned to the fingerprint module of this fingerprint identification region below.
However, when the fingerprint is unlocked, the fingerprint identification area of the display screen emits light with high brightness, and simultaneously generates a large amount of heat, so that the temperature of the fingerprint identification area is relatively higher than that of other areas, and the aging of the luminescent material of the fingerprint identification area is accelerated. Meanwhile, as the use time is prolonged, the light emitting time of the fingerprint identification area is longer than that of other areas, resulting in that the light emitting material of the fingerprint identification area is aged at a higher rate. Therefore, when the display screen displays, the display effect of the fingerprint identification area is poorer than that of other areas, and the display effect of the display screen is poorer.
Disclosure of Invention
The invention discloses a display screen and a mobile terminal, and aims to solve the problem that the display effect of the display screen is poor.
In order to solve the problems, the invention adopts the following technical scheme:
a display screen comprises a first substrate and an anode layer, wherein the anode layer comprises a first portion and a second portion which are connected, the first portion and the second portion are arranged on the first substrate, the display screen is provided with a fingerprint identification area, the first portion is located in the fingerprint identification area and is made of a heat conduction material, and the heat conduction coefficient of the first portion is larger than that of the second portion.
The utility model provides a mobile terminal, includes display screen and fingerprint module, the display screen is above-mentioned display screen, the fingerprint module with the first portion is just to setting up.
The technical scheme adopted by the invention can achieve the following beneficial effects:
the anode layer of the display screen comprises a first part and a second part, wherein the first part is positioned in the fingerprint identification area and is made of heat conduction materials, and the heat conduction coefficient of the first part is larger than that of the second part. When the fingerprint identification region produces the heat, the first portion can be derived the heat more fast for the heat is difficult to gather in the regional department of fingerprint identification, and quick ageing is difficult to appear in the structure that is located the fingerprint identification region in the display screen, makes the display screen basically have the same display effect in fingerprint identification region and other regions. Therefore, the display screen has better display effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a partial structure of a display screen and a fingerprint module according to an embodiment of the present invention.
Description of reference numerals:
100-fingerprint module, 210-first substrate, 220-anode layer, 221-first part, 222-second part, 230-hole transport layer, 240-light emitting layer, 250-electron transport layer, 260-cathode layer, 270-second substrate, 280-light-transmitting and heat-absorbing layer, 290-protective film, 291-first perforation, 300-foam and 310-second perforation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention discloses a display screen, which can be applied in a mobile terminal, where the mobile terminal includes a fingerprint module 100, and the fingerprint module 100 can be an optical fingerprint module. The display may specifically include a first substrate 210, an anode layer 220, a hole transport layer 230, a light emitting layer 240, an electron transport layer 250, a cathode layer 260, and a second substrate 270.
The anode layer 220 is disposed on the first substrate 210, the hole transport layer 230, the light emitting layer 240, and the electron transport layer 250 are sequentially stacked on the anode layer 220, and the cathode layer 260 is disposed on the second substrate 270. When a driving voltage is applied between the cathode layer 260 and the anode layer 220, holes and electrons are injected into the light emitting layer 240 through the hole transport layer 230 and the electron transport layer 250, and the holes and the electrons are radiatively recombined in the light emitting layer 240 to form excitons, which excite photons, thereby realizing light emission.
The display screen has the fingerprint identification region, and fingerprint module 100 corresponds this fingerprint identification regional setting. When the user placed the finger on fingerprint identification region, the light that the display screen sent passes the glass apron that covers the display screen, and light reachs the finger back, and partly light can pierce through the display screen and reach fingerprint module 100 after finger reflection, and this part light attaches has fingerprint information. The sensor of fingerprint module 100 inside converts the received light signal who has fingerprint information attached to into the signal of telecommunication, then compares the fingerprint information who gathers with the fingerprint information of the inside storage of fingerprint module 100 to judge whether user's access is legal. In the process, the fingerprint identification area of the display screen can emit light with high brightness, and simultaneously can generate a large amount of heat, so that the temperature of the fingerprint identification area is relatively higher than that of other areas, and the aging speed of the luminescent material in the fingerprint identification area is high. The problem is more and more prominent with the continuous prolonging of the service time.
In order to prevent the luminescent material of the fingerprint identification area from aging too fast, in an embodiment of the present invention, the anode layer 220 includes a first portion 221 and a second portion 222 connected, and in particular, the second portion 222 may surround the first portion 221. The first portion 221 and the second portion 222 are disposed on the first substrate 210, the first portion 221 is located in the fingerprint identification area, the first portion 221 is made of a heat conductive material, and a thermal conductivity of the first portion 221 is greater than a thermal conductivity of the second portion 222. In other words, the first portion 221 and the second portion 222 can be made of different materials, and both materials can meet the requirement of the display panel to emit light, and meanwhile, the first portion 221 has a higher thermal conductivity, the second portion 222 does not have a thermal conductivity, or the thermal conductivity of the second portion 222 is lower than that of the first portion 221.
After adopting above-mentioned structure, when the regional heat that produces of fingerprint identification, first portion 221 can derive the heat more fast for the heat is difficult to gather in the regional department of fingerprint identification, and consequently the structure that lies in the fingerprint identification region in the display screen is difficult to appear fast ageing, makes the display screen basically have the same display effect in fingerprint identification region and other regions. Therefore, the display screen has better display effect.
Alternatively, the relationship between the size of the first portion 221 and the size of the fingerprint identification area may be: the size of the first portion 221 is smaller than the size of the fingerprint identification area, the size of the first portion 221 is larger than the size of the fingerprint identification area, or the size of the first portion 221 is equal to the size of the fingerprint identification area. When the first mode is adopted, the size of the first part 221 is too small, so that the heat conduction capability is not ideal; with the second arrangement, the first portion 221 is oversized, and although the heat conduction effect is better, the stability may be less; when the third setting mode is adopted, the second part 222 can just cover the fingerprint identification area, so that the heat generated in the fingerprint identification area can be fully led out, and meanwhile, the stability in the display process cannot be influenced. Accordingly, the third arrangement mode is preferable in the embodiment of the present invention, that is, the edge of the first portion 221 coincides with the edge of the fingerprint identification area.
In order to optimize the heat conduction effect of the first portion 221 and ensure that the first portion 221 has good display performance, the material for manufacturing the first portion 221 may be graphene, which is colorless and transparent and has excellent heat conduction performance. Meanwhile, the material for manufacturing the second portion 222 may be selected from indium tin oxide, which is widely used for manufacturing the anode layer 220 of the display screen, so that the cost for modifying the display screen can be reduced by using the material. Of course, the material for manufacturing the first portion 221 and the second portion 222 is not limited to the material described herein, and other more suitable materials may be used, which is not limited in this embodiment of the present invention.
In a further embodiment, the display screen may further include a light-transmissive heat sink layer 280, and the light-transmissive heat sink layer 280 is disposed on the first substrate 210. The hole transport layer 230 is disposed on a surface of the anode layer 220 facing away from the first substrate 210, and the light-transmissive heat sink layer 280 is disposed on a side of the first portion 221 facing away from the hole transport layer 230. The light-transmitting heat-absorbing layer 280 can allow light to pass through and has heat-absorbing capacity, so that heat generated in the fingerprint identification area can be absorbed, and the fingerprint identification area is less prone to rapid aging caused by overheating. Specifically, the material of the light-transmitting heat absorbing layer 280 can be flexibly selected as long as it has light-transmitting property and good heat absorbing ability.
The light-transmitting heat sink layer 280 may be disposed on a side surface of the first substrate 210 facing the first portion 221, but in this way, the light-transmitting heat sink layer 280 occupies the disposing space of the first portion 221, which results in a decrease in the thickness of the first portion 221, and thus the heat conductivity of the first portion 221 is reduced. Therefore, the light-transmitting heat sink layer 280 may be disposed on a side surface of the first substrate 210 away from the first portion 221, such that the thickness of the first portion 221 is not affected by the light-transmitting heat sink layer 280, thereby ensuring the heat conductivity of the first portion 221.
Further, the display screen may further include a protection film 290 and a foam 300, the protection film 290 may protect other portions of the display screen, the protection film is disposed on a side surface of the first substrate 210 away from the anode layer 220, the foam 300 is disposed on a side surface of the protection film 290 away from the first substrate 210, and the foam 300 may implement cooperation between the display screen and the other portions, so as to protect the display screen and improve the sealing performance of the mobile terminal. The protection film 290 is provided with a first through hole 291, and the fingerprint module 100 is disposed opposite to the first through hole 291, so that the light reflected by the finger can enter the fingerprint module 100 through the first through hole 291. When the display screen further comprises a light-transmissive heat sink layer 280, the light-transmissive heat sink layer 280 is located within the first aperture 291. That is, the light-transmitting heat sink layer 280 may utilize the space inside the first through hole 291 without occupying additional space, which may reduce the thickness of the display screen appropriately, and is beneficial for the development of the mobile terminal towards a thinner direction.
It can be understood that the thickness of the transparent heat sink layer 280 affects the heat dissipation capability of the transparent heat sink layer 280, and also affects the assembling position of the fingerprint module 100 in the mobile terminal. In order to promote the heat-sinking capability of printing opacity heat-sink shell 280, suitably reduce the distance between fingerprint module 100 and the display screen simultaneously to promote fingerprint identification efficiency, can make the thickness of printing opacity heat-sink shell 280 be less than the thickness of protection film 290, the thickness of printing opacity heat-sink shell 280 can suitably diminish this moment, both guaranteed the heat-sinking capability of printing opacity heat-sink shell 280, can vacate partly space again, make fingerprint module 100 more be close to the fingerprint identification region, thereby promote fingerprint identification efficiency. The specific thickness of the light-transmitting heat sink layer 280 may be flexibly selected according to the actual structure, which is not limited in the embodiment of the present invention.
In order to optimize the heat absorption effect of the light transmissive heat absorbing layer 280, the projection of the light transmissive heat absorbing layer 280 coincides with the projection of the first portion 221 in a direction perpendicular to the first substrate 210. That is, the size of the light-transmitting heat-absorbing layer 280 is set to be as large as possible, so that the light-transmitting heat-absorbing layer 280 covers the fingerprint identification area as much as possible, thereby achieving the purpose of optimizing the heat-absorbing effect.
Optionally, the light-transmitting heat-absorbing layer 280 is a coating structure, so as to reduce the processing cost of the light-transmitting heat-absorbing layer 280, and improve the uniformity of the light-transmitting heat-absorbing layer 280, so that the heat dissipation performance is more excellent.
Based on the display screen disclosed in any of the above embodiments, the embodiment of the present invention further discloses a mobile terminal, which specifically includes a display screen and a fingerprint module 100, wherein the display screen is the display screen described in any of the above embodiments. Fingerprint module 100 is just to setting up with the first part 221 of display screen for the heat that the fingerprint identification area produced can be via first part 221 effluvium.
When the display screen further includes the protection film 290 and the foam 300, the foam 300 may be provided with a second through hole 310, the second through hole 310 is opposite to the first through hole 291, and at least a portion of the fingerprint module 100 is located in the second through hole 310. After setting up second perforation 310 on bubble cotton 300, fingerprint module 100 can be more close to the fingerprint identification region to promote fingerprint identification efficiency.
The mobile terminal disclosed by the embodiment of the invention can be a smart phone, a tablet computer, an electronic book reader or a wearable device. Of course, the mobile terminal may also be other devices, and the embodiment of the present invention is not limited thereto.
In the above embodiments of the present invention, the difference between the embodiments is mainly described, and different optimization features between the embodiments can be combined to form a better embodiment as long as they are not contradictory, and further description is omitted here in view of brevity of the text.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A display screen, comprising a first substrate (210) and an anode layer (220), wherein the anode layer (220) comprises a first portion (221) and a second portion (222) connected, wherein the first portion (221) and the second portion (222) are both disposed on the first substrate (210), and the second portion (222) surrounds the first portion (221), wherein the display screen has a fingerprint identification area, wherein the first portion (221) is located in the fingerprint identification area, and wherein the first portion (221) is made of a thermally conductive material, and wherein the thermal conductivity of the first portion (221) is greater than the thermal conductivity of the second portion (222).
2. A display screen according to claim 1, characterised in that the edge of the first portion (221) coincides with the edge of the fingerprint recognition area.
3. A display screen according to claim 1, characterised in that the first part (221) is made of graphene and the second part (222) is made of indium tin oxide.
4. A display screen according to claim 1, further comprising a hole transport layer (230) and a light transmissive heat sink layer (280), wherein the hole transport layer (230) is arranged on a surface of the anode layer (220) facing away from the first substrate (210), the light transmissive heat sink layer (280) is arranged on the first substrate (210), and the light transmissive heat sink layer (280) is located on a side of the first portion (221) facing away from the hole transport layer (230).
5. A display screen according to claim 4, characterised in that the light-transmissive heat sink layer (280) is arranged on a surface of the first substrate (210) facing away from the first portion (221).
6. A display screen according to claim 5, further comprising a protective film (290), the protective film (290) being arranged on a side surface of the first substrate (210) facing away from the anode layer (220), the protective film (290) being provided with first perforations (291), the light-transmissive heat sink layer (280) being located within the first perforations (291).
7. A display screen according to claim 6, characterised in that the thickness of the light-transmissive heat sink layer (280) is less than the thickness of the protective film (290).
8. A display screen according to claim 4, characterised in that the projection of the light-transmissive heat sink layer (280) coincides with the projection of the first portion (221) in a direction perpendicular to the first substrate (210).
9. A mobile terminal, characterized in that it comprises a display screen according to any one of claims 1 to 8 and a fingerprint module, said fingerprint module being disposed opposite to said first portion (221).
10. A mobile terminal according to claim 9, wherein the display further comprises a protective film (290) and a foam (300), the protective film (290) is disposed on a side surface of the first substrate (210) facing away from the anode layer (220), the protective film (290) is provided with a first perforation (291), the foam (300) is disposed on a side surface of the protective film (290) facing away from the first substrate (210), the foam (300) is provided with a second perforation (310), the second perforation (310) is disposed opposite to the first perforation (291), and at least a portion of the fingerprint module is located in the second perforation (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471385.2A CN110137234B (en) | 2019-05-31 | 2019-05-31 | Display screen and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910471385.2A CN110137234B (en) | 2019-05-31 | 2019-05-31 | Display screen and mobile terminal |
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| CN110137234A CN110137234A (en) | 2019-08-16 |
| CN110137234B true CN110137234B (en) | 2021-10-15 |
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| CN201910471385.2A Active CN110137234B (en) | 2019-05-31 | 2019-05-31 | Display screen and mobile terminal |
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| CN110472617B (en) * | 2019-08-29 | 2021-10-12 | 维沃移动通信有限公司 | Display module and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962025A (en) * | 2018-06-05 | 2018-12-07 | 京东方科技集团股份有限公司 | Display module and preparation method, display device |
| CN109147569A (en) * | 2018-08-13 | 2019-01-04 | 武汉华星光电半导体显示技术有限公司 | display module and its corresponding display device |
| CN109461374A (en) * | 2018-11-12 | 2019-03-12 | 京东方科技集团股份有限公司 | Display module and preparation method thereof |
| WO2019097795A1 (en) * | 2017-11-20 | 2019-05-23 | 株式会社ジャパンディスプレイ | Display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109697396A (en) * | 2017-10-24 | 2019-04-30 | 华为终端（东莞）有限公司 | A kind of organic electroluminescent display panel, display module and electronic equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019097795A1 (en) * | 2017-11-20 | 2019-05-23 | 株式会社ジャパンディスプレイ | Display device |
| CN108962025A (en) * | 2018-06-05 | 2018-12-07 | 京东方科技集团股份有限公司 | Display module and preparation method, display device |
| CN109147569A (en) * | 2018-08-13 | 2019-01-04 | 武汉华星光电半导体显示技术有限公司 | display module and its corresponding display device |
| CN109461374A (en) * | 2018-11-12 | 2019-03-12 | 京东方科技集团股份有限公司 | Display module and preparation method thereof |
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