CN109426022A - Display module - Google Patents
Display module Download PDFInfo
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- CN109426022A CN109426022A CN201710769497.7A CN201710769497A CN109426022A CN 109426022 A CN109426022 A CN 109426022A CN 201710769497 A CN201710769497 A CN 201710769497A CN 109426022 A CN109426022 A CN 109426022A
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- China
- Prior art keywords
- liquid crystal
- display panel
- crystal display
- light
- dotted
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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
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- 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
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
-
- 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
- G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
Abstract
A kind of display module, comprising: liquid crystal display panel, including multiple display pixel cells, display pixel cells include through area and it is non-penetrate area, at least partly display pixel cells it is non-through in area with sensor devices；Protective layer is located above liquid crystal display panel, and protective layer is the back side towards the surface of liquid crystal display panel, has groove in the back side, groove is located at liquid crystal display panel side；Dotted to adopt figure light source, dotted figure light source of adopting is at least partially disposed in groove；Protective layer is sensing face backwards to the surface of liquid crystal display panel, dotted to adopt light caused by figure light source and enter protective layer from least one surface of groove, and is conducted through protective layer to sensing face, and the reflected light for carrying finger print information is formed in sensing face；Sensor devices acquire reflected light to obtain fingerprint image.Technical solution of the present invention obtains clearly fingerprint image under the premise of guaranteeing display effect, so that the integrated of fingerprint recognition and image display function be better achieved.
Description
Technical field
The present invention relates to optical finger print identification field more particularly to a kind of display modules.
Background technique
Fingerprint imaging identification technology is the fingerprint image that human body is collected by fingerprint sensor, then and in system
Existing fingerprint imaging information is compared, and whether carrying out correct judgment, and then realizes the technology of identification.The side used due to it
Just property and the uniqueness of somatic fingerprint, fingerprint identification technology have been widely used in every field.Such as public security bureau, customs
Etc. field of safety check, consumer product areas such as the access control system and PC of building and mobile phone etc..
The implementation of fingerprint imaging identification technology has the multiple technologies such as optical imagery, capacitance imaging, ultrasonic imaging.Relatively
For, optical finger print imaging technique, imaging effect is relatively preferable, and equipment cost is relatively low.
On the other hand, the advantages that liquid crystal display die set is light-weight with small in size, Low emissivity is widely used in various fields.
In the prior art, has the integrating fingerprint identification function in display module, but it is usually to use capacitance type fingerprint recognition principle.
The display module structure of existing integrating fingerprint identification function has much room for improvement, and performance is to be improved.
Summary of the invention
Problems solved by the invention is to provide a kind of display module, under the premise of guaranteeing manufacturing yield, is better achieved
Fingerprint recognition and image display function it is integrated.
To solve the above problems, the present invention provides a kind of display module, comprising:
Liquid crystal display panel, including multiple display pixel cells, the display pixel cells include penetrating area and non-transmission
Non- penetrate in area, at least partly display pixel cells has sensor devices in area；Protective layer is located on the liquid crystal display panel
Side, the protective layer are the back side towards the surface of the liquid crystal display panel, have groove in the back side, the groove is located at
The liquid crystal display panel side；Dotted to adopt figure light source, the dotted figure light source of adopting is at least partially disposed in the groove；It is described
Protective layer is sensing face backwards to the surface of the liquid crystal display panel, described dotted to adopt light caused by figure light source from described recessed
At least one surface of slot enters the protective layer, and conducts through the protective layer to the sensing face, in the sensing face
Form the reflected light for carrying finger print information；The sensor devices acquire the reflected light to obtain fingerprint image.
Compared with prior art, technical solution of the present invention has the advantage that
Non- through sensor devices are integrated in area in the liquid crystal display panel, the sensor devices are carried for acquiring
There is the reflected light of finger print information to obtain fingerprint image；The reflected light is dotted to adopt figure light source institute by what is be arranged in the groove
It generates light and is formed.Due to it is described it is non-through area be inherently present in the liquid crystal display panel, it is described non-to penetrate area
Presence will not influence the image display function of the liquid crystal display panel, therefore the sensor devices are set to the liquid
The non-of LCD panel penetrates area, can be effectively reduced the sensor devices to the shadow of the liquid crystal display panel display function
It rings；On the other hand, it is described it is dotted adopt figure light source use and the dotted figure light source of adopting is set to the LCD display
Way in the groove of plate side, can effectively keep the dotted consistency for adopting light produced by figure light source, reduce light by
The influence of various structural scatterings into liquid crystal display panel, additionally it is possible to so that the protective layer is realized the transmission of light as waveguide,
So as to effectively improve the uniformity for being transmitted through light intensity in the sensing face, adopted to be conducive to improve the sensor devices
The signal-to-noise ratio for collecting signal, is conducive to the acquisition of high quality fingerprint image；And the signal-to-noise ratio that the sensor devices are signal collected
Raising, make also obtain clearly fingerprint image when distance is larger between the sensor devices and the sensing face, thus
Without reducing the distance between the sensor devices and the sensing face, the display of the liquid crystal display panel can effectively ensure that
Effect guarantees the thickness of the protective layer, and then can realize that fingerprint recognition and image are aobvious under the premise of guaranteeing manufacturing yield
Show the integrated of function.
In optinal plan of the present invention, the liquid crystal display panel includes the array substrate being oppositely arranged and colorized optical filtering base
Plate, and the liquid crystal layer being filled between the array substrate and the colored optical filtering substrates；The array substrate is located at described
Between colored optical filtering substrates and the sensing face；Alternatively, the colored optical filtering substrates are located at the array substrate and the sensing
Between face, so as to select array substrate described in the liquid crystal display panel according to the specific requirement of the display module
Guarantee the guarantor with the relative positional relationship of the colored optical filtering substrates to guarantee the display effect of the liquid crystal display panel
The thickness of sheath, and then be conducive to the base for preferably realizing fingerprint recognition and image display function, be conducive to remain higher
Manufacturing yield, lower cost of manufacture.
In optinal plan of the present invention, the colored optical filtering substrates include multiple colored light-filtering units and are filled in the colour
Black matrix between filter unit；The display pixel cells it is non-corresponding with the position of the black matrix through area, so
The sensor devices are located at the corresponding position of the black matrix, i.e., the described sensor devices on the colored optical filtering substrates just
Projection is located at the black matrix position；Since the presence of the black matrix has no effect on the aobvious of the liquid crystal display panel
Show effect, so the sensor devices are set to the corresponding position of the black matrix, can be effectively reduced the photoreceptor
Influence of the part to the liquid crystal display panel display effect is advantageously implemented the integrated of fingerprint recognition and image display function.
In optinal plan of the present invention, the dotted figure light source of adopting is infrared light supply, and the wave-length coverage of produced light is greater than
700nm, therefore the dotted propagation for adopting light produced by figure light source in the protective layer, and formed reflected light is by institute
The process for stating sensor devices acquisition can't impact the display effect of the liquid crystal display panel, can effectively ensure that
The display effect of the liquid crystal display panel；Especially when the colored optical filtering substrates are located at the array substrate and the sensing
Between face, the black matrix is higher to the transmitance of infrared light, and the sensor devices are anti-for black matrix described in acquisition of transmission
Penetrate light, therefore by the dotted way adopted figure light source and be set as infrared light supply, additionally it is possible to the black matrix be effectively reduced to institute
The influence for stating fingerprint image acquisition is conducive to the acquisition of clear fingerprint image.
Detailed description of the invention
Fig. 1 is that the invention shows the schematic diagram of the section structure of mould group first embodiment；
Fig. 2 is the enlarged diagram of structure in the centre circle of display module embodiment shown in Fig. 1 140；
Fig. 3 is that the invention shows the schematic diagram of the section structure of mould group second embodiment；
Fig. 4 is the enlarged diagram of structure in the centre circle of display module embodiment shown in Fig. 3 240；
Fig. 5 is that the invention shows the schematic diagram of the section structure of mould group 3rd embodiment；
Fig. 6 is the enlarged structure schematic diagram of structure in the centre circle of display module embodiment shown in Fig. 5 340；
Fig. 7 is that the invention shows the overlooking structure diagrams of the vertical sensing face of mould group fourth embodiment.
Specific embodiment
As described in background, the prior art mostly uses the aobvious of capacitance type fingerprint imaging technique and light-emitting display panel
Show that mould group is integrated.
To solve the technical problem, the present invention provides a kind of display module, by being integrated in the liquid crystal display panel
In sensor devices and the dotted use for adopting figure light source obtain clearly fingerprint image under the premise of guaranteeing display effect
Picture, so that the integrated of fingerprint recognition and image display function be better achieved.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
With reference to Fig. 1, show that the invention shows the schematic diagram of the section structure of mould group first embodiment.
The display module includes:
Liquid crystal display panel 110, including multiple display pixel cells 101, the display pixel cells 101 include penetrating area
102 and it is non-penetrate area 103, at least partly display pixel cells 101 is non-through having sensor devices 116 in area 103；Protective layer
130, it is located at 110 top of liquid crystal display panel, the surface of the protective layer 130 towards the liquid crystal display panel 110 is
The back side 132, the back side 132 is interior to have groove 149, and the groove 149 is located at 110 side of liquid crystal display panel；It is dotted
Figure light source 120 is adopted, the dotted figure light source 120 of adopting is at least partially disposed in the groove 149；The protective layer 130 is backwards to institute
The surface for stating liquid crystal display panel 110 is sensing face 131, described dotted to adopt light caused by figure light source 120 from the groove
149 at least one surface enters the protective layer 130, and conducts through the protective layer 130 to the sensing face 131, in institute
State the reflected light for being formed in sensing face 131 and carrying finger print information；The sensor devices 116 acquire the reflected light to be referred to
Print image.
Non- penetrate in area 103 in the liquid crystal display panel 110 is integrated with sensor devices 116, the sensor devices 116
For acquiring the reflected light for carrying finger print information to obtain fingerprint image；The reflected light is by being set in groove 149
Dotted adopt light produced by figure light source 120 and formed.Since the non-area 103 that penetrates is the liquid crystal display panel 110
It is inside inherently present, the image that the non-presence through area 103 will not influence the liquid crystal display panel 110 shows function
Can, therefore the sensor devices 116 are set to the non-through area of the liquid crystal display panel 110, it can be effectively reduced described
Influence of the sensor devices 116 to 110 display function of liquid crystal display panel；On the other hand, the dotted figure light source 120 adopted
Using and by the dotted way adopting figure light source 120 and being set in the 110 side groove 149 of liquid crystal display panel, energy
It is enough effectively to keep the dotted consistency for adopting light produced by figure light source 120, light is reduced by liquid crystal display panel 110
The influence of various structural scatterings is conducive to high-quality to be conducive to improve the signal collected signal-to-noise ratio of the sensor devices 116
The acquisition of fingerprint image, and the raising of the signal collected signal-to-noise ratio of the sensor devices 116 are measured, the sensor devices 116 are made
Clearly fingerprint image can be also obtained when distance is larger between the sensing face 131, without reducing the photoreceptor
The distance between part 116 and the sensing face 131 can effectively ensure that the display effect of the liquid crystal display panel 110, guarantee
The thickness of the protective layer 130, and then fingerprint recognition and image display function can be realized under the premise of guaranteeing manufacturing yield
It is integrated.
The specific technical solution for display module embodiment that the invention will now be described in detail with reference to the accompanying drawings.
The dotted figure light source 120 of adopting is for generating the light of acquisition fingerprint image.
Since the dotted consistency for adopting light produced by figure light source 120 is stronger, stray light is less, can effectively improve
The signal collected signal-to-noise ratio of the sensor devices 116, is conducive to the acquisition of high quality fingerprint image；Moreover, the photoreceptor
The raising of the signal collected signal-to-noise ratio of part 116 can expand the sensor devices under the premise of obtaining clear fingerprint image
The distance between 116 and the sensing face 131 have so that the formation for the liquid crystal display panel 110 provides enough spaces
Conducive to the guarantee of 110 display effect of liquid crystal display panel.
In the present embodiment, the dotted figure light source 120 of adopting is infrared light supply；Specifically, the dotted figure light source 120 of adopting is
Near-infrared light source.By the dotted way adopted figure light source 120 and be set as infrared light supply, it can be effectively reduced and described dotted adopt figure
Propagation of the light produced by light source 120 in the protective layer 130, and formed reflected light are adopted by the sensor devices 116
Influence of the process of collection to 110 image display function of liquid crystal display panel can obtain under the premise of guaranteeing display effect
To clearly fingerprint image, be conducive to be better achieved the integrated of fingerprint recognition and image display function.
Specifically, the visible spectrum that can be experienced due to people's vision is in 390nm to 780nm range, the liquid crystal
Display panel 110 forms the wavelength of display light generally in 400nm to 700nm range, dotted adopts figure light source 120 so described
The wave-length coverage of produced light is in 700nm to 1500nm range.In the present embodiment, the dotted figure light source 120 of adopting is one
A LED light；Specifically, the dotted figure light source 120 of adopting is an infrared LED lamp.
The protective layer 130, which is located at, described dotted adopts the top of figure light source 120.
The sensing face 131 backwards to it is described it is dotted adopt figure light source 120, for receiving to touch to realize fingerprint collecting；It is described
The back side 132 towards it is described it is dotted adopt figure light source 120, be disposed opposite to each other with the sensing face 131.In the present embodiment, the protective layer
130 be the cover-plate glass of the display module.
The groove 149 is located in the back side 132, is recessed towards 131 direction of sensing face, for the point to be arranged
Shape adopts figure light source 120, to increase the dotted irradiated area for adopting figure light source 120 in the sensing face 131, to increase fingerprint
The area of image；And it is set to and dotted in the groove 149 adopts light caused by figure light source 120 without transmiting the liquid crystal
Display panel 110 directly can enter the protective layer 130 from a surface of the groove 149, light be projected to it is described
It not will receive the influence of various structures in the liquid crystal display panel 110 before sensing face 131, it is smaller by the probability scattered,
So the consistency for being projected to 131 glazed thread of sensing face can effectively be kept, the ingredient of stray light is effectively reduced.
The signal collected signal-to-noise ratio of the sensor devices 116 is improved, the fingerprint image of high quality can not only be obtained；And
And when distance is larger between the sensor devices 116 and the sensing face 131, the sensor devices 116 can also be obtained clearly
Clear fingerprint image, that is to say, that without reducing the distance between the sensor devices 116 and described sensing face 131, Neng Gouyou
Effect guarantees the thickness of the protective layer 130, guarantees the display effect of the liquid crystal display panel 110, and then can guarantee to make
Under the premise of making yield, the integrated of fingerprint recognition and image display function is realized.
Specifically, the back side 132 includes the acquisition zone 132b for being located at 149 two sides of groove and non-acquired area
132a, the groove 149 are located at the side of the liquid crystal display panel 110；Moreover, the acquisition zone 132b and the liquid crystal
Show that the position of panel 110 is corresponding, therefore the acquisition zone 132b is located at the groove 149 close to the liquid crystal display panel
110 side, the non-acquired area 132a are located at side of the groove 149 far from the liquid crystal display panel 110.
In conjunction with reference Fig. 2, the enlarged diagram of structure in the centre circle of display module embodiment shown in Fig. 1 140 is shown.
As depicted in figs. 1 and 2, the groove 149 includes first surface 142, the first surface 142 and the back side
132 acquisition zone 132b is connected；It is described it is dotted adopt light caused by figure light source 120, at least partly from the first surface 142
Into the protective layer 130.
As shown in Fig. 2, the groove 149 further include: second surface 141, the second surface 141 and the back side 132
It is parallel；The first surface 142 is to connect the acquisition zone 132b at the back side 132 and the plane of the second surface 141.
In the present embodiment, the acquisition zone of the first surface 142 vertical second surface 141 and the back side 132
132b, i.e., the described first surface 142 and 141 angle of second surface and the first surface 142 and the back side
132 acquisition zone 132b angle is right angle.
So as shown in Fig. 2, the dotted light-emitting surface (not indicating in figure) for adopting figure light source 120 is towards first table
Face 142 and the second surface 141, produced light are emitted with certain angle of divergence from the light-emitting surface, from the first surface
142 and the second surface 141 enter the protective layer 130, through the protective layer 130 conduction to the sensing face 131, thus
Reflection and refraction occur in the sensing face 131, forms the reflected light for carrying finger print information.
The liquid crystal display panel 110 is used to show pattern dynamically or statically, to realize image display function；It is described
The non-sensor devices 116 through in area 103 can acquire the reflected light in display pixel cells 101, and by the reflected light
Photoelectric conversion is carried out, to obtain fingerprint image, so the liquid crystal display panel 110 can be realized fingerprint recognition and image is shown
Function integrates.
The liquid crystal display panel 110 includes multiple display pixel cells 101, and the display pixel cells 101 include saturating
Cross area 102 and non-through area 103, the sensor devices 116 are located at least partly the non-of display pixel cells 101 and penetrate area 103.
Due to it is described it is non-through area 103 be inherently present in the liquid crystal display panel 110, it is described non-to penetrate area 103
Presence will not influence the image display function of the liquid crystal display panel 110, therefore the sensor devices 116 are set to
It is described non-through area 103, it can be effectively reduced the sensor devices 116 to the shadow of 110 display function of liquid crystal display panel
It rings.
On the other hand, the dotted use for adopting figure light source 120 and by it is described it is dotted adopt figure light source 120 be set to it is described
Way in groove can effectively keep the consistency for being transmitted through 131 glazed thread of sensing face, reduce the generation of stray light,
The signal collected signal-to-noise ratio of the sensor devices 116 can be effectively improved, the fingerprint image of high quality is help to obtain.
And since noise is relatively high, when distance is larger between the sensor devices 116 and the sensing face 131
When, the sensor devices 116 can also obtain clearly fingerprint image, that is to say, that without reducing 116 He of sensor devices
The distance between described sensing face 131 can effectively ensure that the thickness of the protective layer 130, guarantee the liquid crystal display panel
110 display effect, and then the collection of fingerprint recognition and image display function can be realized under the premise of guaranteeing manufacturing yield
At.
It should be noted that the liquid crystal display panel 110 is based on amorphous silicon film transistor in the present embodiment
The liquid crystal display panel of (Amorphous Silicon Thin Film Transistor, a-Si:H TFT).But it is of the invention
In other embodiments, the liquid crystal display panel is also possible to based on low-temperature polysilicon film transistor (LowTemperature
Poly Si Thin Film Transistor, LTP-Si TFT) liquid crystal display panel or based on indium gallium zinc oxide it is thin
The LCD display of film transistor (Indium Gallium Zinc Oxide Thin Film Transistor, IGZO TFT)
Plate.
The display module further includes display backlight (not indicating in figure).Light energy caused by the display backlight
It is enough to realize transmission to form display light through area 102 from the display pixel cells 101；From different display pixel cells 101
The display light color of transmission, light intensity are different, to realize image display function.So the sensor devices 116 are set to institute
Non- transmission area 103 is stated, the setting of the sensor devices 116 can be effectively prevent to 110 display function of liquid crystal display panel
It impacts, advantageously ensures that display effect, and obtain clearly fingerprint image, be conducive to that fingerprint recognition and figure is better achieved
As integrating for display function.
As shown in Figure 1, the groove 149 is located at the side of the liquid crystal display panel 110, the liquid crystal display panel
Corresponding to the 110 acquisition zone 132b with the back side 132, i.e., on the back side 132, the liquid crystal display panel 110
Projection is located at the side of the groove 149, coincides with the acquisition zone 132b, or is located in the acquisition zone 132b.Institute
State protective layer 130 cover it is described it is dotted adopt figure light source 120 and the liquid crystal display panel 110, for protecting the liquid crystal display
Panel 110 and other hardware devices.
So being passed after the reflected light for carrying finger print information is formed in the sensing face 131 through the protective layer 130
It is directed at the acquisition zone 132b at the back side 132, is emitted to the liquid crystal display panel 110 from the acquisition zone 132b, then project
On to the sensor devices 116, acquired by the sensor devices 116 to obtain fingerprint image.
The liquid crystal display panel 110 includes the array substrate 111 being oppositely arranged and colored optical filtering substrates 112, and is filled out
Fill the liquid crystal layer 113 between the array substrate 111 and the colored optical filtering substrates 112.
The colored optical filtering substrates 112 include multiple colored light-filtering units 112c and are filled in the colored light-filtering units
Black matrix 112b between 112c.
The colored light-filtering units 112c is for making light caused by the display backlight form colourama.It is general next
It says, the material of the colored light-filtering units 112 is photoresist；The colored light-filtering units 112 include red photoresist, green light
Resistance and three sub-pixels of blue light resistance.The material of the black matrix 112b is also photoresist, for realizing adjacent color optical filtering
Isolation between unit 112c；Furthermore the color of the black matrix 112b is black, so stray light can also be absorbed, to mention
The display effect of the high liquid crystal display panel.
In colored optical filtering substrates 112, the colored light-filtering units 112c needs light transmission that can make the display
Light caused by backlight forms colourama；And be projected to the light on the black matrix 112b then can be by the black matrix
112b absorbs；Therefore described opposite with the colored light-filtering units 112c through area 102 in each display pixel cells 101
It answers, it is described non-corresponding with the black matrix 112b through area 103, that is to say, that in the pixel unit 101, the colour
The region filter unit 112c is the pixel unit 101 through area 102, and the region the black matrix 112b is
The non-of the pixel unit 101 penetrates area 103.
The array substrate 111 includes device substrate (not indicating in figure) and the control positioned at the device substrate surface
Device (not shown).Wherein, the device substrate is used to provide technological operation surface for the formation of the control device, also
For providing mechanical support for the control device；The control device is for controlling formed electric field in the liquid crystal layer 113
Intensity, to control the deflection direction of liquid crystal and deflection angle in the liquid crystal layer 113.
The array substrate 111 further include: transparent electrode (does not indicate) in figure, is located in the device substrate, and described
Control device is connected, and for forming electric field in the liquid crystal layer 113, and adjusts and is formed under the control of the control device
The intensity of electric field and direction, to reach liquid crystal deflection direction and deflection angle in the control liquid crystal layer 113, realize that image is aobvious
The purpose shown.
In the array substrate 111, the transparent electrode can be realized the transmission of light, often have in the control device
There is the metal layer for realizing electricity conducting；Therefore the transparent electrode is located in the transmission area of the pixel unit 101, the control
Device is located at the non-of the pixel unit 101 and penetrates in area, to prevent the control device from influencing the liquid crystal display panel
Image show.
Due to it is described through area 101 it is corresponding with the colored light-filtering units 112c, it is described it is non-transmission area 102 with it is described black
Matrix 112b is corresponding, therefore as shown in Figure 1, the transparent electrode is corresponding with the position the colored light-filtering units 112c, described
Control device is corresponding with the position the black matrix 112b, i.e., positive throwing of the described transparent electrode on the colored optical filtering substrates 102
Shadow is located in the range of the colored light-filtering units 112c, positive throwing of the control device on the colored optical filtering substrates 102
Shadow is located in the range of the black matrix 112b.
Since the material of the colored light-filtering units 112c and the black matrix 112b are mainly organic matter, this implementation
In example, the sensor devices 116 are formed in the device substrate of the array substrate 111, so as to make the sensor devices
The semiconductor structures such as 116 and the control device, the transparent electrode are formed by same process flow, can be advantageously ensured that
The formation quality of the sensor devices 116 is conducive to the device performance and manufacturing yield that improve the liquid crystal display panel 110.
Specifically, in order to avoid influencing the image display function of the liquid crystal display panel 110, the sensor devices 116
It is set to described non-through area；And it is described non-corresponding with the black matrix 112b through area 103, therefore the sensor devices
116 are located at the corresponding position the black matrix 112b, i.e., the described sensor devices 116 are on the colored optical filtering substrates 112
Orthographic projection is located at the black matrix 112b position；Since the presence of the black matrix 112b has no effect on the liquid crystal
Show the display effect of panel 110, so the sensor devices 116 are set to the corresponding position the black matrix 112b, energy
Influence of the sensor devices 116 to 110 display effect of liquid crystal display panel is enough effectively reduced, is advantageously implemented fingerprint knowledge
It is other and image display function integrated.
As shown in Figure 1, the array substrate 111 is located at the colored optical filtering substrates 112 and the protection in the present embodiment
Between layer 130, i.e., the described array substrate 111 is between the colored optical filtering substrates 112 and sensing face 131.The present invention other
In embodiment, the array substrate may be located on side of the colored optical filtering substrates far from the protective layer, i.e., the described coloured silk
Color optical filtering substrate is between the array substrate and the protective layer；Therefore it can specifically be wanted according to the display module
It asks, selects the relative positional relationship of array substrate described in the liquid crystal display panel and the colored optical filtering substrates, to guarantee
The display effect of the liquid crystal display panel, guarantees the thickness of the protective layer 130, and then is conducive to preferably realize that fingerprint is known
Other and image display function base, is conducive to maintain higher manufacturing yield, lower cost of manufacture.
Specifically, the sensor devices 116 have the lighting surface (not indicating in figure) for acquiring the reflected light；The present embodiment
In, towards the sensing face 131, the reflected light for carrying finger print information is emitted the lighting surface from the sensing face 131, projection
On to the lighting surface, acquired by the sensor devices 116 to carry out photoelectric conversion.
In the present embodiment, the distance between the lighting surface and the sensing face 131 D are greater than 0.4mm.
It is described to adopt since the sensing face 131 is located at the protective layer 130 liquid crystal display panel 110 backwards
Distance D is too small between smooth surface and the sensing face 131, and 130 thickness of protective layer can be made too small, then may will affect the guarantor
The protective capability of sheath 130；In addition, distance D is too small between the lighting surface and the sensing face 131, it also can be to the array
The thickness of substrate 111 causes excessive limitation, increases so as to will cause the 111 formation process difficulty of array substrate, shadow
The formation quality for ringing formed array substrate 111, influences the quality of the sensor devices 116, is likely to result in the display mould
The problem of group display function is degenerated, fingerprint image quality declines.
Since the dotted consistency for adopting light produced by figure light source 120 is higher, stray light is less, the groove 149
Positioned at the side of the liquid crystal display panel 110, light before being projected in the sensing face 131 by the probability scattered compared with
Small, the noise that reflected light is formed in the sensing face 131 is relatively high；Therefore the dotted figure light source 120 and described recessed adopted
The position of slot 149 is that have relatively large distance D without influencing clear fingerprint image between the lighting surface and the sensing face 131
The premise of acquisition can make that other function structure (example is arranged between the liquid crystal display panel 110 and the protective layer 130
Such as: capacitive touch screen) it is possibly realized.
It should be noted that according to the principle of the liquid crystal display, the liquid crystal display panel 110 further include: opposite to set
The the first polarizing film 114a and the second polarizing film 114b set, the array substrate 111 and the colored optical filtering substrates 112 are located at institute
It states between the first polarizing film 114a and the second polarizing film 114b；The sensor devices 116 are for described in acquisition of transmission first
The reflected light of polarizing film 114a or the second polarization 114b.
Specifically, being emitted from the protective layer 130 after the reflected light is formed in the sensing face 131, institute need to be transmitted
Stating the first polarizing film 114a or the second polarization 114b could be acquired by the sensor devices 116；And in the present embodiment,
The dotted figure light source 120 of adopting is near-infrared light source, and produced light is near infrared light, that is, formed reflected light is also near-infrared
Light, so the first polarizing film 114a and the second polarizing film 114b are required to transmit the reflected light, to prevent
The presence for stating the first polarizing film 114a and the second polarizing film 114b influences the acquisition of clear fingerprint image.
In the present embodiment, the first polarizing film 114a between the array substrate 111 and the protective layer 130,
Second polarizing film is located at side of the colored optical filtering substrates 112 far from the protective layer 130, wherein described second partially
Vibration piece 114b is the polarizer, for making light caused by the display backlight form polarised light；First polarizing film
114a is analyzer, is used to form the display light for realizing that image is shown；The sensor devices 116 are for described in acquisition of transmission first
The reflected light of polarizing film 114a.
Specifically, being emitted from the protective layer 130 after the reflected light is formed in the sensing face 131, institute need to be transmitted
Stating the first polarizing film 114a could be acquired by the sensor devices 116；It is described dotted to adopt figure light source 120 and in the present embodiment
For near-infrared light source, produced light is near infrared light, that is, formed reflected light is also near infrared light, so first polarization
Piece 114a is required to transmit the reflected light, to prevent the presence of the first polarizing film 114a from influencing clear fingerprint image
Acquisition.
In other embodiments, can also using as the polarizing film of the polarizer the first polarizing film, using as analyzer
Polarizing film is the second polarizing film.
Since liquid crystal is liquid, there is mobility, therefore the liquid crystal display panel 110 further include: frame glue layer 115, institute
Frame glue layer 115 is stated between the array substrate 111 and the colored optical filtering substrates 112 and surrounds the liquid crystal layer 113, is used
In encapsulated liquid crystals.
In the present embodiment, the frame glue layer 115 of the liquid crystal display panel 110 is located at the colored optical filtering substrates 112 and institute
It states between array substrate 111, to seal the liquid crystal layer 113；So the groove 149 is located at the frame glue layer 115 far from institute
State the side of liquid crystal layer 113, that is to say, that on the back side 132, the liquid crystal layer 113 is surrounded in the projection of the frame glue layer 115
Projection, and the projection of the frame glue layer 115 is between the groove 149 and the liquid crystal layer 113.
So it is described it is dotted adopt light produced by figure light source 120 can be directly through a surface transmission of the groove 149
To in the protective layer 130, without transmiting the liquid crystal display panel 110, do not need especially to transmit the liquid crystal layer 113,
And be directly projected on the protective layer 130, so as to effectively prevent in the liquid crystal display panel 110 structure to light
Scattering, to advantageously reduce the generation of stray light, is conducive to the improvement of signal-to-noise ratio, is conducive to the raising of fingerprint image quality.
With reference to Fig. 3, show that the invention shows the schematic diagram of the section structure of mould group second embodiment.
The present embodiment is identical with the first embodiment place, and the present invention repeats no more again.The present embodiment and previous embodiment
A difference be the colored optical filtering substrates 212 between the array substrate 211 and the sensing face 231, i.e.,
The array substrate 211 is located at side of the colored optical filtering substrates 212 far from the protective layer 230.So the liquid crystal
Show the relative positional relationship of array substrate 211 and the colored optical filtering substrates 212 described in panel 210, it can be according to described aobvious
Show the specific requirement of mould group and set, so as to effectively realize the integrated of fingerprint recognition and image display function, is conducive to protect
The thickness for demonstrate,proving the protective layer 230 is conducive to maintain higher manufacturing yield, lower cost of manufacture.
Light caused by the display backlight is after transmiting the array substrate 211, conduction to the liquid crystal layer
It in 213, is modulated by the liquid crystal molecule in the liquid crystal layer 213, then transmits the colored optical filtering substrates 212 and be emitted, it is aobvious to be formed
Show light, realizes image display function.
The sensor devices 216 are formed in the device substrate (not indicating in figure) of the array substrate 211, and are set to
It is described non-through area 203；And it is described non-corresponding with the black matrix 212b through area 203, therefore the sensor devices
216 are located at the corresponding position the black matrix 212b, i.e., the described sensor devices 216 are on the colored optical filtering substrates 212
Orthographic projection is located at the black matrix 212b position, so the sensor devices 216 are for black matrix described in acquisition of transmission
The reflected light of 212b.
In addition, the black matrix 212b is mainly used in the liquid crystal display panel 110, visible light wave range is absorbed
Stray light, to prevent metal layer reflection light in the control device and influence display effect, therefore the black matrix 212b
There is preferable absorption to visible light, there is certain translucency to the infrared light.So in the present embodiment, the point
It is infrared light supply that shape, which adopts figure light source 220, and the wave-length coverage of produced light is greater than 700nm, to improve the black matrix 212b
To the transmissivity of formed reflected light, be conducive to the acquisition of clear finger print information.
In addition, the wave-length coverage of display light is formed according to liquid crystal display panel 210, in the liquid crystal display panel 210
Liquid crystal layer 213 and polarizing film etc. good modulating action can be played to visible light, so as to effectively realize that image is aobvious
Show function；So setting infrared light supply for the dotted figure light source 220 of adopting, i.e., fingerprint image acquisition is realized by infrared light
Way can effectively avoid the liquid crystal display panel 210 from being advantageously implemented figure to the influence of the fingerprint image acquisition function
As the function of display and Fingerprint recognition is compatible.
Fig. 4 is referred in addition, combining, shows the amplification signal of structure in the centre circle of display module embodiment shown in Fig. 3 240
Figure.
The present embodiment and another difference of previous embodiment are as follows: the first surface 242 and the back of the groove 249
The acquisition zone 232b in face 232 is connected, and the second surface 241 of the groove 249 is parallel with the back side 232；First table
The folder of the acquisition zone 232b of the angle α and the first surface 242 and the back side 232 of face 242 and the second surface 241
Angle beta is obtuse angle.
As shown in figure 4, the angle α and the angle β is made to be obtuse angle, i.e., the described first surface 242 is clinoplain,
So as to effectively reduce the dotted incidence angle for adopting the relatively described first surface 242 of 220 emergent light of figure light source, to reduce reflection
Light intensity increases incident intensity, is conducive to the quality for improving obtained fingerprint image；The refraction angle of incident light can also be reduced simultaneously
Degree, to increase the range that incident light irradiates the 232 acquisition zone 232b of the back side, is conducive to the face for increasing obtained fingerprint image
Product.In addition, the difficulty of processing at obtuse angle is smaller compared with right angle, be conducive to improve manufacturing yield and device performance, be conducive to more preferable
Realization fingerprint recognition and the compatibility that shows of image.
In addition, as shown in Figure 3 and Figure 4, the display module further include: light-absorption layer 244 (as shown in Figure 4) is located at described
Second surface 242 and the non-acquired area 232a at the back side 232.It is described dotted to adopt 220 institute of figure light source so in the present embodiment
Light is generated to be only capable of entering the protective layer 230 from the first surface 242；And towards the second surface 241 and direction
The light of the non-acquired area 232a in the back side 232 is then absorbed by the light-absorption layer 244, to reach reduction stray light, inhibits interference
The purpose that signal generates.
With reference to Fig. 5 and Fig. 6, wherein Fig. 5 is shown the invention shows the schematic diagram of the section structure of mould group 3rd embodiment,
Fig. 6 shows the enlarged structure schematic diagram of structure in the centre circle of display module embodiment shown in Fig. 5 340.
In the present embodiment, the array substrate 311 between the colored optical filtering substrates 312 and the protective layer 330,
The i.e. described array substrate 311 is between the colored optical filtering substrates 312 and sensing face 331.In the liquid crystal display panel 310
The relative positional relationship of the array substrate 311 and the colored optical filtering substrates 312, can be according to the specific of the display module
It is required that and set, so as to effectively realize the integrated of fingerprint recognition and image display function, advantageously ensure that the protective layer
330 thickness is conducive to maintain higher manufacturing yield, lower cost of manufacture.
The difference of the present embodiment and previous embodiment is, in the present embodiment, the groove 349 further include: second surface
341 (as shown in Figure 6), the second surface 341 are parallel with the back side 332；The first surface 342 is to connect the back
The acquisition zone 332b in face 332 and the curved surface of the second surface 341, and the first surface 342 is recessed to the sensing face 331
Sunken concave surface.
The first surface 342 is provided towards to the way of the recess of sensing face 331 concave surface, is on the one hand capable of increasing
The area of the first surface 342 increases the light intensity for being projected into the protective layer 330；On the other hand, additionally it is possible to make light
Line reflects on the first surface 342, thus make it is described it is dotted adopt light produced by figure light source 320 enter the guarantor
When sheath 330, a degree of diverging occurs, so as to effectively expand the range R that light is projected in the sensing face 331
(as shown in Figure 5), increasing can be realized the regional scope of fingerprint recognition in the sensing face 331, and then make the liquid crystal display
Panel 310 can carry out fingerprint image acquisition using bigger region.
With reference to Fig. 7, show that the invention shows the overlooking structure diagrams of the vertical sensing face of mould group fourth embodiment.
The present embodiment, the present embodiment and previous embodiment something in common, details are not described herein by the present invention.The present embodiment is with before
State embodiment the difference is that, in the present embodiment, it is described it is dotted adopt figure light source 420 include two or three above LED light, institute
With the display module further include: daylighting control unit 470, for controlling when the sensor devices acquire optical signal every time
The dotted LED light adopted in figure light source 420 generates light.
Specifically, the dotted figure light source 420 of adopting includes 6 LED light, respectively LED light a, LED light b, LED light c, LED
Lamp d, LED light e and LED light f；6 LED light are uniformly distributed in the same side of the liquid crystal display panel 410.
The sensing face 431 adopts graph region 471 including multiple.Specifically, the quantity for adopting graph region 471 is 14,
Greater than the dotted quantity for adopting LED light in figure light source 420.It is described it is dotted adopt in figure light source 420 each LED light with it is multiple adjacent
It is corresponding to adopt graph region 471.It is described dotted to adopt in figure light source 420 each LED light and adopt 471 phase of graph region with 4 in the present embodiment
It is corresponding.Specifically, with the 1st to the 4th to adopt graph region 471 corresponding (region as shown in A in Fig. 7) by the LED light a；The LED
It is corresponding (region as shown in B in Fig. 7) that lamp b with the 3rd to the 6th adopts graph region 471；Described LED light c and the 5th to the 8th is adopted figure
Region 471 is corresponding (region as shown in C in Fig. 7)；The LED light d with the 7th to the 10th adopt graph region 471 it is corresponding (as scheme
Region shown in D in 7)；It is corresponding (region as shown in E in Fig. 7) that the LED light e with the 9th to the 12nd adopts graph region 471；It is described
It is corresponding (region as shown in F in Fig. 7) that LED light f with the 11st to the 14th adopts graph region 471.
Moreover, the quantity for adopting graph region 471 is greater than the dotted quantity for adopting LED light in figure light source 420, the point
Shape adopt each LED light in figure light source 420 with multiple adjacent to adopt graph region 471 corresponding.Therefore, the adjacent LED light institute is right
Answer to adopt 471 part of graph region identical, such as the 3rd and the 4th to adopt graph region 471 both corresponding with the LED light a, also with institute
It is corresponding to state LED light b；9th and the 10th to adopt graph region 871 both corresponding with the LED light d, also opposite with the LED light e
It answers.
In the present embodiment, the daylighting control unit 470 also respectively at the dotted LED light adopted in figure light source 420 with
And the liquid crystal display panel 410 is connected, and is touched for adopting graph region 471 described in the judgement, control and the area Cai Tu
Domain 471 generates light apart from nearest LED light, and controls the sensor devices in corresponding display pixel cells and acquire light,
To obtain fingerprint image, so as to guarantee the fingerprint image for collecting enough large area to carry out fingerprint recognition.
In the liquid crystal display panel 410, at least partly adopted in the corresponding display pixel cells of graph region 471 with described
It is provided with sensor devices.The daylighting control unit 470 includes touch-control device, can detect the sensing face 431 whether by
It touches, and judges to be adopted graph region by what is touched；The daylighting control unit 470 and dotted LED adopted in figure light source 420
Lamp is connected, when being touched for adopting graph region 471 described in the judgement, control it is described it is dotted adopt it is most suitable in figure light source 420
One LED (for example, with graph region 471 is adopted described in touching apart from nearest) generation light；The daylighting control unit 470
Also it is connected with the liquid crystal display panel 410, when being touched for adopting graph region 471 described in the judgement, control is adopted with described
Sensor devices in the corresponding display pixel cells of graph region 471 acquire light, to obtain fingerprint image.
When the LED light quantity is enough, when the arrangement density of LED light is sufficiently large, the selection of suitable LED light, by beating
It opens a LED light and does one acquisition, it will be able to collect sufficiently large fingerprint area to guarantee the realization of fingerprint recognition, be conducive to
Reduce the difficulty and complexity of fingerprint recognition.
It is accordingly interior that more structure, property and advantages in relation to the provided display module of the present embodiment can refer to previous embodiment
Hold.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (15)
1. a kind of display module characterized by comprising
Liquid crystal display panel, including multiple display pixel cells, the display pixel cells include through area and it is non-penetrate area, until
Non- penetrate of small part display pixel cells has sensor devices in area；
Protective layer is located above the liquid crystal display panel, and the protective layer is to carry on the back towards the surface of the liquid crystal display panel
Face, has groove in the back side, and the groove is located at the liquid crystal display panel side；
Dotted to adopt figure light source, the dotted figure light source of adopting is at least partially disposed in the groove；
The protective layer is sensing face backwards to the surface of the liquid crystal display panel, described dotted to adopt light caused by figure light source
Enter the protective layer from least one surface of the groove, and conducts through the protective layer to the sensing face, described
The reflected light for carrying finger print information is formed in sensing face；
The sensor devices acquire the reflected light to obtain fingerprint image.
2. display module as described in claim 1, which is characterized in that the sensor devices have adopting towards the sensing face
Smooth surface；
The distance between the lighting surface and the sensing face are greater than 0.4mm.
3. display module as described in claim 1, which is characterized in that the liquid crystal display panel includes the array being oppositely arranged
Substrate and colored optical filtering substrates, and the liquid crystal layer being filled between the array substrate and the colored optical filtering substrates；
The array substrate is between the colored optical filtering substrates and the sensing face；Alternatively, the colored optical filtering substrates position
Between the array substrate and the sensing face.
4. display module as claimed in claim 3, which is characterized in that the colored optical filtering substrates include multiple colorized optical filtering lists
Member and the black matrix being filled between the colored light-filtering units；
It is described corresponding with the colored light-filtering units through area；
It is described non-corresponding with the black matrix through area.
5. display module as claimed in claim 4, which is characterized in that the colored optical filtering substrates be located at the array substrate and
Between the sensing face；
Reflected light of the sensor devices for black matrix described in acquisition of transmission.
6. display module as claimed in claim 3, which is characterized in that the liquid crystal display panel further include: be oppositely arranged
First polarizing film and the second polarizing film, the array substrate and the colored optical filtering substrates are located at first polarizing film and described
Between second polarizing film；
Reflected light of the sensor devices for the first polarizing film described in acquisition of transmission or second polarization.
7. display module as claimed in claim 3, which is characterized in that the liquid crystal display panel further include: frame glue layer, it is described
Frame glue layer is between the array substrate and the colored optical filtering substrates and surrounds the liquid crystal layer；
The groove is located at the side of the frame glue layer far from the liquid crystal layer.
8. display module as described in claim 1, which is characterized in that the dotted wavelength model for adopting light produced by figure light source
It is trapped among in 700nm to 1500nm range.
9. display module as described in claim 1, which is characterized in that the back side includes acquisition zone and non-acquired area, described
Acquisition zone is located at the groove close to the side of the liquid crystal display panel, and the non-acquired area is located at the groove far from described
The side of liquid crystal display panel；
The groove includes: first surface, and the first surface is connected with the acquisition zone at the back side；
It is described it is dotted adopt light caused by figure light source, at least partly from the first surface enter the protective layer.
10. display module as claimed in claim 9, which is characterized in that the groove further include: second surface, described second
Surface is parallel with the back side；
The first surface is the acquisition zone for connecting the back side and the plane of the second surface.
11. display module as claimed in claim 10, which is characterized in that the first surface vertically second surface and institute
State the back side；
Alternatively, the first surface is with the angle of the second surface and the first surface and the angle at the back side
Obtuse angle.
12. display module as claimed in claim 9, which is characterized in that the groove further include: second surface, described second
Surface is parallel with the back side；
The first surface is the acquisition zone for connecting the back side and the curved surface of the second surface, and the first surface is back
The concave surface being recessed to the sensing face.
13. display module as described in claim 1, which is characterized in that the dotted figure light source of adopting is a LED.
14. display module as described in claim 1, which is characterized in that it is described it is dotted adopt figure light source include two or three with
Upper LED；
The display module further include: daylighting control unit, for controlling institute when the sensor devices acquire optical signal every time
It states the dotted LED adopted in figure light source and generates light.
15. display module as described in claim 1, which is characterized in that the liquid crystal display panel is based on amorphous silicon membrane
The liquid crystal display panel of transistor, the liquid crystal display panel based on low-temperature polysilicon film transistor are aoxidized based on indium gallium zinc
The liquid crystal display panel of object thin film transistor (TFT).
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| CN201710769497.7A CN109426022A (en) | 2017-08-31 | 2017-08-31 | Display module |
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