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CN111123569A - Display modules and electronic equipment - Google Patents

Display modules and electronic equipment Download PDF

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Publication number
CN111123569A
CN111123569A CN201911421623.5A CN201911421623A CN111123569A CN 111123569 A CN111123569 A CN 111123569A CN 201911421623 A CN201911421623 A CN 201911421623A CN 111123569 A CN111123569 A CN 111123569A
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CN
China
Prior art keywords
light
display module
light source
fingerprint
display panel
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.)
Pending
Application number
CN201911421623.5A
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Chinese (zh)
Inventor
杨刚
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.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication 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 Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Priority to CN201911421623.5A priority Critical patent/CN111123569A/en
Publication of CN111123569A publication Critical patent/CN111123569A/en
Priority to PCT/CN2020/139908 priority patent/WO2021136140A1/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Image Input (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

The invention provides a display module and electronic equipment, wherein the display module comprises a backlight source and a display panel, wherein the backlight source comprises a first light source for providing visible light and a second light source for providing invisible light; the display module assembly still includes: the fingerprint sensing layer is arranged on one side of the display panel, which is far away from the backlight source, and is used for receiving reflected light reflected by a finger above the display panel; the reflected light is the light emitted by the second light source and reflected by the invisible light facing the display panel. This scheme can guarantee that the light that is used for responding to the fingerprint reachs the fingerprint response layer to guarantee to realize the application of optics fingerprint module on display module assembly, the problem that can be fine solution prior art display module assembly can't realize the optics fingerprint identification function.

Description

Display module and electronic equipment
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a display module and electronic equipment.
Background
In recent years, full-screen mobile phones are increasingly popularized, but an optical fingerprint which is one of full-screen implementation modes can only be applied to an OLED (organic light emitting semiconductor) display screen at present, and the use of the OLED display screen is troubled by supply and price, so that an optical fingerprint design scheme which can be applied to a TFT (thin film transistor) display screen is required, and wider application of the optical fingerprint and cost saving are realized.
That is to say, optical fingerprint module can only be applied to OLED display module in the present trade, can not be applied to TFT display module, and OLED display screen is with high costs and supplies goods the difficulty.
Specifically, the reason that the TFT display module cannot apply the existing photoelectric fingerprint is that the reflected light of the finger cannot reach the fingerprint module through the backlight (backlight light guide plate);
that is to say, there is the problem that can't realize optics fingerprint identification function in current display module group.
Disclosure of Invention
The invention aims to provide a display module and electronic equipment, and aims to solve the problem that the display module in the prior art cannot realize an optical fingerprint identification function.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a display module, including a backlight and a display panel, where the backlight includes a first light source for providing visible light and a second light source for providing invisible light;
the display module assembly still includes:
the fingerprint sensing layer is arranged on one side of the display panel, which is far away from the backlight source, and is used for receiving reflected light reflected by a finger above the display panel;
the reflected light is the light emitted by the second light source and reflected by the invisible light facing the display panel.
In a second aspect, an embodiment of the present invention further provides an electronic device, including: the display module is provided.
In the embodiment of the invention, the display module comprises a backlight source and a display panel, wherein the backlight source comprises a first light source for providing visible light and a second light source for providing invisible light; the display module assembly still includes: the fingerprint sensing layer is arranged on one side of the display panel, which is far away from the backlight source, and is used for receiving reflected light reflected by a finger above the display panel; the reflected light is the light emitted by the second light source and reflected by the invisible light facing the display panel; can guarantee that the light that is used for responding to the fingerprint reachs the fingerprint response layer to guarantee to realize the application of optics fingerprint module on display module assembly, the problem that can be fine solution prior art display module assembly can't realize optics fingerprint identification function.
Drawings
FIG. 1 is a first schematic structural diagram of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the arrangement of a first light source and a second light source according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a photosensitive element according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a display module according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating an implementation of an optical fingerprint recognition function of the display module according to the embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present 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 invention provides a display module aiming at the problem that the display module in the prior art can not realize the function of optical fingerprint identification, and as shown in fig. 1, fig. 2, fig. 4 and fig. 5, the display module comprises a backlight source 1 and a display panel 2, wherein the backlight source 1 comprises a first light source 3 for providing visible light and a second light source 4 for providing invisible light; the display module assembly still includes: the fingerprint sensing layer 5 is arranged on one side of the display panel 2, which is far away from the backlight source 1, wherein the fingerprint sensing layer 5 is used for receiving reflected light reflected by a finger above the display panel 2; the reflected light is light generated by reflecting the invisible light emitted by the second light source 4 and directed to the display panel 2.
The display module provided by the embodiment of the invention comprises a backlight source and a display panel, wherein the backlight source comprises a first light source for providing visible light and a second light source for providing invisible light; the display module assembly still includes: the fingerprint sensing layer is arranged on one side of the display panel, which is far away from the backlight source, and is used for receiving reflected light reflected by a finger above the display panel; the reflected light is the light emitted by the second light source and reflected by the invisible light facing the display panel; can guarantee that the light that is used for responding to the fingerprint reachs the fingerprint response layer to guarantee to realize the application of optics fingerprint module on display module assembly (like TFT display module assembly), the problem that can be fine solution display module assembly can't realize optics fingerprint identification function among the prior art.
Further, as shown in fig. 2, the backlight 1 further includes a light guide plate 6, and the first light source 3 and the second light source 4 are both disposed on a side surface of the light guide plate 6, where the side surface is adjacent to a light emitting surface of the light guide plate 6.
Therefore, the light rays of the first light source and the second light source can be ensured to be normally emitted to the display panel.
Specifically, as shown in fig. 2, the first light sources 3 and the second light sources 4 are disposed at intervals on one of the side surfaces of the light guide plate 6.
Therefore, the display module can display the function as much as possible, and the optical fingerprint identification function is better realized.
As shown in fig. 1, 4 and 5, the display panel 2 includes an array substrate 7, a color filter substrate 8 and a liquid crystal layer (not shown) disposed between the array substrate 7 and the color filter substrate 8, which are disposed oppositely; the fingerprint induction layer 5 is arranged on one side of the color film substrate 8, which is deviated from the liquid crystal layer.
Therefore, the display function of the display module with the array substrate (namely the TFT layer) can be normally realized.
Specifically, as shown in fig. 4, the fingerprint sensing layer 5 includes a plurality of photosensitive elements 9, and an orthographic projection of the plurality of photosensitive elements 9 on the color filter substrate 8 is located in a black matrix BM area of the color filter substrate 8.
That is, the sensing position in the fingerprint sensing layer does not coincide with the red, green and blue RGB pixel position in the color film substrate.
Further, as shown in fig. 1, fig. 4 and fig. 5, the display module further includes: the glass cover plate 10 is arranged on one side, away from the color film substrate 8, of the fingerprint sensing layer 5.
Therefore, the fingerprint sensing layer and the display panel can be protected.
Further, as shown in fig. 1, 4 and 5, the display module further includes: the polaroid 11, the polaroid 11 is located between the fingerprint response layer 5 and the glass apron 10.
In the embodiment of the present invention, as shown in fig. 1, 4 and 5, the display module further includes: a Binding (BD) area 12, said fingerprint sensing layer 5 being connected to a second external line via said binding area 12.
Can guarantee like this that fingerprint response layer normally transmits the light that senses for external circuit, carry out fingerprint identification.
Specifically, the second light source is a light source providing infrared non-visible light, but not limited thereto.
In the embodiment of the invention, the upper glass can be arranged between the color film substrate and the fingerprint sensing layer, and the lower glass can be arranged between the array substrate and the backlight source, so that the display panel is further protected.
The display module provided by the embodiment of the invention is further described below, and the display module takes a TFT display module as an example.
In view of the above technical problems, embodiments of the present invention provide a display module, which can be specifically implemented as a TFT display module, and can implement application of an optical fingerprint module on a TFT display module by changing a backlight source LED (light emitting diode) lamp and a fingerprint sensor sensing layer (i.e., the above fingerprint sensing layer) of the TFT display module; specifically (the second light source takes an infrared light emitting source as an example):
the method comprises the steps of adding partial infrared non-visible light LED lamps in a plurality of LED lamps in a backlight source, and arranging a fingerprint sensor induction layer above the upper glass (as shown in figure 1) to realize fingerprint identification. In order to avoid the influence on the display of the TFT, the invisible light LED lamp is additionally arranged in the backlight, the fingerprint sensor induction layer can receive infrared invisible light, and therefore a light source required by the fingerprint induction layer is generated, and the display of the display screen is not influenced.
More specifically: the overall structure of the solution provided by the embodiment of the present invention is as shown in fig. 1, and the fingerprint sensor sensing layer is disposed above the upper glass, so that the binding (i.e., fixing) of the ITO (indium tin oxide) and the connection with other lines (i.e., the second external line) can be completed in the BD (binding) area of the upper glass.
Wherein, some LED lamps in a plurality of LED lamps of backlight are infrared non-visible light LED lamp for the emission light source (specifically the light that the external world reflected back) of fingerprint module (being above-mentioned fingerprint response layer) response received light, like the infrared non-visible light LED lamp in fig. 2, the setting of the quantity and the position of specific this lamp can be adjusted according to actual need, does not limit here.
The fingerprint sensor induction layer in the embodiment of the invention mainly realizes the induction of infrared invisible light through a photosensitive diode (as shown in figure 3); specifically, in order to prevent the photodiode of the fingerprint sensor sensing layer from blocking the pixel display of the display screen and affecting the display effect, the position of the photodiode in the embodiment of the present invention needs to avoid the RGB pixels of the color filter (i.e., the color filter substrate), as shown in fig. 4, R, G and B represent the pixel points of the color filter, and S represents the photodiode of the fingerprint sensor sensing layer. In the embodiment of the invention, the color filter can be connected with an external circuit (namely the first external circuit) after ITO is bound at the BM position of the upper glass in modes of ACF (anisotropic conductive film), conductive adhesive and the like.
As can be seen from the above, in the embodiment of the present invention, the point light source emitted by the backlight LED lamp passes through the backlight light guide plate and various films to form a surface light source, the light is emitted from the display area of the whole display screen, the emitted light reaches the finger after passing through the display screen, and then is reflected by the finger and irradiates the photodiode of the fingerprint sensor sensing layer (as shown in fig. 5), the photodiode realizes the change of resistance value after sensing to convert the optical signal into the electrical signal, and realizes the connection with the external circuit (i.e., the second external circuit) through the BD (binding) area, specifically, the electrical signal is transmitted to the external circuit through the BD.
To sum up, this scheme has realized the application of optics fingerprint module on TFT display module, has avoided sheltering from of being shaded to light above arranging fingerprint sensor response layer in last glass.
The embodiment of the invention can realize the comprehensive unlocking and the local unlocking of the screen, and can simultaneously place the second light source at different positions and different devices and meet the requirements of different applications on fingerprint identification; for example, the display screen can be applied to various terminal products such as mobile phones, PADs, fingerprint locks and AR (augmented reality) wearable devices, and transparent positions such as transparent positions of the back transparent battery cover plate and the side middle frame can be achieved as long as the transparent positions can be emitted and reflected back to the fingerprint sensor induction layer via the outside, and limitation is not required here.
An embodiment of the present invention further provides an electronic device, including: the display module is provided.
The electronic device provided by the embodiment of the invention can realize each function realized by the display module in the embodiments of fig. 1 to 5, and is not described herein again to avoid repetition.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1.一种显示模组，包括背光源和显示面板，其特征在于，所述背光源包括用于提供可见光的第一光源和用于提供不可见光的第二光源；1. A display module comprising a backlight and a display panel, wherein the backlight comprises a first light source for providing visible light and a second light source for providing invisible light; 所述显示模组还包括：The display module also includes: 指纹感应层，设置于所述显示面板的背离所述背光源的一侧，其中所述指纹感应层用于接收被所述显示面板上方的手指反射后的反射光；a fingerprint sensing layer, disposed on the side of the display panel away from the backlight, wherein the fingerprint sensing layer is used for receiving reflected light reflected by a finger above the display panel; 所述反射光为所述第二光源发出的朝向所述显示面板的不可见光被反射后的光线。The reflected light is the reflected light of the invisible light emitted by the second light source and directed toward the display panel. 2.根据权利要求1所述的显示模组，其特征在于，所述背光源还包括导光板，所述第一光源和第二光源均设置在所述导光板的侧面，所述侧面与所述导光板的出光面相邻。2 . The display module according to claim 1 , wherein the backlight source further comprises a light guide plate, the first light source and the second light source are both arranged on the side surface of the light guide plate, and the side surface is connected to the light guide plate. 3 . The light emitting surfaces of the light guide plate are adjacent to each other. 3.根据权利要求2所述的显示模组，其特征在于，在所述导光板的其中一个所述侧面，所述第一光源和所述第二光源间隔分布设置。3 . The display module according to claim 2 , wherein on one of the side surfaces of the light guide plate, the first light source and the second light source are arranged at intervals. 4 . 4.根据权利要求1所述的显示模组，其特征在于，所述显示面板包括相对设置的阵列基板、彩膜基板和设置于所述阵列基板与所述彩膜基板之间的液晶层；所述指纹感应层设置于所述彩膜基板背离所述液晶层的一侧。4 . The display module according to claim 1 , wherein the display panel comprises an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate; The fingerprint sensing layer is disposed on the side of the color filter substrate away from the liquid crystal layer. 5.根据权利要求4所述的显示模组，其特征在于，所述指纹感应层包括多个感光元件，多个所述感光元件在所述彩膜基板上的正投影，位于所述彩膜基板的黑矩阵BM区域。5 . The display module according to claim 4 , wherein the fingerprint sensing layer comprises a plurality of photosensitive elements, and the orthographic projections of the plurality of photosensitive elements on the color filter substrate are located on the color filter. 6 . The black matrix BM region of the substrate. 6.根据权利要求4所述的显示模组，其特征在于，还包括：玻璃盖板，所述玻璃盖板设置于所述指纹感应层的背离所述彩膜基板的一侧。6 . The display module according to claim 4 , further comprising: a glass cover plate, the glass cover plate is disposed on a side of the fingerprint sensing layer away from the color filter substrate. 7 . 7.根据权利要求6所述的显示模组，其特征在于，还包括：偏光片，所述偏光片设于所述指纹感应层与所述玻璃盖板之间。7 . The display module according to claim 6 , further comprising: a polarizer, wherein the polarizer is arranged between the fingerprint sensing layer and the glass cover plate. 8 . 8.根据权利要求1所述的显示模组，其特征在于，还包括：绑定区，所述指纹感应层通过所述绑定区与第二外部线路连接。8 . The display module according to claim 1 , further comprising: a binding area, through which the fingerprint sensing layer is connected to the second external circuit. 9 . 9.根据权利要求1所述的显示模组，其特征在于，所述第二光源为提供红外非可见光的光源。9 . The display module of claim 1 , wherein the second light source is a light source that provides infrared invisible light. 10 . 10.一种电子设备，其特征在于，包括：如权利要求1至9任一项所述的显示模组。10. An electronic device, comprising: the display module according to any one of claims 1 to 9.
CN201911421623.5A 2019-12-31 2019-12-31 Display modules and electronic equipment Pending CN111123569A (en)

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CN201911421623.5A CN111123569A (en) 2019-12-31 2019-12-31 Display modules and electronic equipment
PCT/CN2020/139908 WO2021136140A1 (en) 2019-12-31 2020-12-28 Display module and electronic device

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Publication number Priority date Publication date Assignee Title
CN112965282A (en) * 2021-02-09 2021-06-15 维沃移动通信有限公司 Display module and electronic equipment
CN113050324A (en) * 2021-04-06 2021-06-29 维沃移动通信有限公司 Display module and electronic equipment
WO2021136140A1 (en) * 2019-12-31 2021-07-08 维沃移动通信有限公司 Display module and electronic device
CN115424536A (en) * 2022-04-24 2022-12-02 京东方科技集团股份有限公司 Display module and display device

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CN108846391A (en) * 2018-08-28 2018-11-20 武汉华星光电技术有限公司 Fingerprint mould group and display equipment
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TWI676069B (en) * 2018-12-18 2019-11-01 群光電子股份有限公司 Electronic device and fingerprint identification and uniform light structure thereof

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CN111123569A (en) * 2019-12-31 2020-05-08 维沃移动通信有限公司 Display modules and electronic equipment

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Publication number Priority date Publication date Assignee Title
US20190265815A1 (en) * 2012-11-27 2019-08-29 Guardian Glass, LLC Transparent conductive coating for capacitive touch panel with additional functional film(s)
CN108415188A (en) * 2018-05-02 2018-08-17 上海中航光电子有限公司 A kind of liquid crystal display panel, display device and its unlocked by fingerprint method
CN108846391A (en) * 2018-08-28 2018-11-20 武汉华星光电技术有限公司 Fingerprint mould group and display equipment
TWI676069B (en) * 2018-12-18 2019-11-01 群光電子股份有限公司 Electronic device and fingerprint identification and uniform light structure thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021136140A1 (en) * 2019-12-31 2021-07-08 维沃移动通信有限公司 Display module and electronic device
CN112965282A (en) * 2021-02-09 2021-06-15 维沃移动通信有限公司 Display module and electronic equipment
CN113050324A (en) * 2021-04-06 2021-06-29 维沃移动通信有限公司 Display module and electronic equipment
CN115424536A (en) * 2022-04-24 2022-12-02 京东方科技集团股份有限公司 Display module and display device

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Application publication date: 20200508