CN109541857A - Display panel and preparation method thereof, display device - Google Patents
Display panel and preparation method thereof, display device Download PDFInfo
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- CN109541857A CN109541857A CN201811618992.9A CN201811618992A CN109541857A CN 109541857 A CN109541857 A CN 109541857A CN 201811618992 A CN201811618992 A CN 201811618992A CN 109541857 A CN109541857 A CN 109541857A
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- membrane substrates
- color membrane
- display panel
- array substrate
- fingerprint identification
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 229
- 239000012528 membrane Substances 0.000 claims abstract description 128
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 68
- 125000006850 spacer group Chemical group 0.000 claims abstract description 42
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 239000010408 film Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 238000010408 sweeping Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 13
- 230000006870 function Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- 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
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
-
- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
-
- 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
Landscapes
- 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)
- Microelectronics & Electronic Packaging (AREA)
- Image Input (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of display panels and preparation method thereof, display device, display panel includes the color membrane substrates being oppositely arranged and array substrate, color membrane substrates are equipped with black matrix close to the side of array substrate, color membrane substrates are equipped with cylindrical spacer close to the side of array substrate, at least one cylindrical spacer is provided with hollow-out parts and first, air is filled in hollow-out parts, first orthographic projection on color membrane substrates surrounds orthographic projection of the hollow-out parts on color membrane substrates, and first orthographic projection on color membrane substrates is located at black matrix in the orthographic projection on color membrane substrates；Array substrate includes fingerprint identification area, fingerprint identification area includes multiple fingerprint identification units, side of the array substrate close to color membrane substrates is arranged in fingerprint identification unit, and orthographic projection of the fingerprint identification unit on color membrane substrates is located at hollow-out parts in the orthographic projection on the color membrane substrates.The present invention is isolated by the liquid crystal above fingerprint identification unit, reduces interference of the liquid crystal to optical path, improves fingerprint capacity.
Description
Technical field
The present invention relates to field of display technology, fill more particularly, to a kind of display panel and preparation method thereof, display
It sets.
Background technique
With the rapid development of display technology, the display panel with fingerprint identification function has gradually spread the life of people
In work, fingerprint recognition is widely used in the display screen of the electronic equipments such as mobile phone, personal digital assistant, computer.Fingerprint is
Human body is inherent unique and the invariant features that can distinguish with other people, it by finger tip skin surface series of ridges and
Paddy composition, the composition details of these ridges and paddy generally include the bifurcated of ridge, the end of ridge, arch, the arch of tent-type, it is left-handed,
The details such as dextrorotation, spiral or bispin, these Details uniqueness of fingerprint pattern.
Currently, usually combine fingerprint identification technology with display technology, so that display panel not only has display function,
Fingerprint recognition can also be carried out, to enrich the function of display panel, while improving the safety of information in display device
Energy.Further, optical fingerprint identification technology is combined with display technology, fingerprint identification region can be made to be located at viewing area, gram
Taken the lower problem of the screen accounting that display panel caused by non-display area is arranged in fingerprint identification region, at the same avoid by
Fingerprint identification region is caused for experiencing poor problem when the back side of display panel is arranged in.
Display panel in the prior art includes the color membrane substrates being oppositely arranged, array substrate and color membrane substrates and battle array
Optical finger print identifier is usually integrated in array substrate by the liquid crystal layer between column substrate, and backlight module goes out after light by aobvious
Finger is reached after showing panel, then by being reflected on Fingerprint Identification Unit, the optical path reflected during this is needed by display surface
Liquid crystal cell in plate, and liquid crystal has the function of reflecting and reflect, therefore liquid crystal generates sternly the optical path in fingerprint identification process
The distortion and interference of weight cause fingerprint recognition signal inaccurate.
Summary of the invention
In view of this, the present invention provides a kind of display panels and preparation method thereof, display device, to solve due to liquid
Crystalline substance generates serious distortion and interference to the optical path in fingerprint identification process, and fingerprint recognition signal is caused asking for large error occur
Topic.
On the one hand, the present invention provides a kind of display panels, described including the color membrane substrates being oppositely arranged and array substrate
Color membrane substrates are equipped with black matrix close to the side of the array substrate,
The color membrane substrates are equipped with cylindrical spacer, at least one described column dottle pin close to the side of the array substrate
Object is provided with hollow-out parts and first, fills air, the described first positive throwing on the color membrane substrates in the hollow-out parts
Shadow surrounds orthographic projection of the hollow-out parts on the color membrane substrates, the described first orthographic projection position on the color membrane substrates
In the black matrix in the orthographic projection on the color membrane substrates；
The array substrate includes fingerprint identification area, and the fingerprint identification area includes multiple fingerprint recognitions being arranged in array
The array substrate is arranged in close to the side of the color membrane substrates, the fingerprint recognition list in unit, the fingerprint identification unit
Member is located at the hollow-out parts in the orthographic projection on the color membrane substrates in the orthographic projection on the color membrane substrates.
On the one hand, the present invention also provides a kind of methods for making above-mentioned display panel, comprising:
The color membrane substrates being oppositely arranged and array substrate are provided；
The offer color membrane substrates include: that black matrix is arranged in the side close to the array substrate, in the coloured silk
Cylindrical spacer is arranged close to the side of the array substrate in ilm substrate, at least one described cylindrical spacer is provided with hollow-out parts
With first, the hollow-out parts fill air, and first orthographic projection on the color membrane substrates surrounds the hollow-out parts
Orthographic projection on the color membrane substrates, first orthographic projection on the color membrane substrates are located at the black matrix in institute
It states in the orthographic projection on color membrane substrates；
The offer array substrate includes: that fingerprint is arranged close to the side of the color membrane substrates in the array substrate
Cog region, the fingerprint identification area include multiple fingerprint identification units being arranged in array, and the fingerprint identification unit is described
Orthographic projection on color membrane substrates is located at the hollow-out parts in the orthographic projection on the color membrane substrates；
The color membrane substrates and the array substrate opposite direction are bonded to form display panel sylphon, Xiang Suoshu display panel is empty
Liquid crystal is perfused in box.
On the other hand, the present invention also provides a kind of display devices, including any of the above-described display panel.
Compared with prior art, display panel provided by the invention and preparation method thereof, display device, at least realize as
Under the utility model has the advantages that
Heretofore described color membrane substrates are equipped with cylindrical spacer close to the side of the array substrate, described at least one
Cylindrical spacer is provided with hollow-out parts and first, fills air in the hollow-out parts, described first in the color membrane substrates
On orthographic projection surround orthographic projection of the hollow-out parts on the color membrane substrates, described first on the color membrane substrates
Orthographic projection is located at the black matrix in the orthographic projection on the color membrane substrates；The array substrate includes fingerprint identification area, institute
Stating fingerprint identification area includes multiple fingerprint identification units being arranged in array, and the fingerprint identification unit is arranged in the array base
Plate is located at the hollow out close to the side of the color membrane substrates, orthographic projection of the fingerprint identification unit on the color membrane substrates
The liquid crystal above fingerprint identification unit is isolated in the orthographic projection on the color membrane substrates, through cylindrical spacer for portion, is reduced
Distortion and interference of the liquid crystal to fingerprint identification unit optical path reduces signal interference, improves fingerprint capacity.
Certainly, implementing any of the products of the present invention specific needs while must not reach all the above technical effect.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of structural schematic diagram of display module；
Fig. 2 is a kind of planar structure schematic diagram of display panel provided by the invention；
Fig. 3 be in Fig. 2 A-A to sectional view；
Fig. 4 is another display panel planar structure schematic diagram provided by the invention；
Fig. 5 is another display panel planar structure schematic diagram provided by the invention；
Fig. 6 is B-B direction sectional view in Fig. 2；
Fig. 7 be in Fig. 2 A-A to another sectional view；
Fig. 8 is a kind of fingerprint recognition drive circuit schematic diagram provided by the invention；
Fig. 9 is the partial enlarged view of fingerprint identification unit driving circuit；
Figure 10 be in Fig. 2 A-A to another sectional view；
Figure 11 is a kind of production method flow chart of display panel provided by the invention；
Figure 12 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
In display panel with fingerprint identification function, usually occur identifying inaccurate situation.In order to improve fingerprint recognition
The phenomenon of inaccuracy promotes display quality, and the display panel that inventor provides the prior art carries out the following studies:
Referring to FIG. 1, Fig. 1 is a kind of structural schematic diagram of display module.As shown in Figure 1, a kind of display module 00 includes
The display panel 01 and backlight assembly 02 being oppositely arranged further include the glass cover-plate 03 that 00 light-emitting surface of display device is arranged in, and are shown
Show that panel 01 includes the color membrane substrates 001 that are oppositely arranged and array substrate 002 and is located at color membrane substrates 001 and array substrate
Liquid crystal layer 003 between 002 is liquid crystal molecule in liquid crystal layer 003, and fingerprint identification unit 04 is arranged in array substrate 02, when
Right display panel 01 further includes the upper polaroid 004 for deviating from the backlight assembly 02 on color membrane substrates 001, be located at array
Close to the down polaroid 005 of the backlight assembly 02 on substrate 002.The working principle of fingerprint identification unit 04 are as follows: when finger connects
When touching display screen, reflected when light source is irradiated on the valley line and crestal line of finger print, due to the angle of reflection of valley line and crestal line
The intensity of illumination spent and reflected back is different, and by light projection to fingerprint identification unit 04, fingerprint identification unit 04 will be received
Inductive signal fingerprint recognition signal receiving unit (not shown) is transmitted to by fingerprint signal line so that fingerprint recognition believe
Number receiving unit goes out the valley line and crestal line of fingerprint according to the signal identification received.When finger 007 touches glass cover-plate 03,
A series of fingerprint ridges 008 and fingerprint valley 009 on the skin surface of finger end form fingerprint, and the light that light source issues passes through liquid crystal layer
003, finger is reached after color membrane substrates 001, upper polaroid 004 and glass cover-plate 03, successively passes through glass cover-plate again by reflecting
03, upper polaroid 004, color membrane substrates 001, liquid crystal layer 003 reach the fingerprint identification unit 04 in array substrate 002, this light
Pass through liquid crystal layer 003 during road twice, and the liquid crystal molecule in liquid crystal layer 003 has refraction and reflex, to this light
Road causes interference, causes fingerprint recognition signal inaccurate.
In order to solve the above-mentioned technical problems, the present invention provides a kind of display panels and preparation method thereof, display device.It closes
In the embodiment of display panel provided by the invention and preparation method thereof and display device, it is discussed further below.
Referring to Fig. 2 and Fig. 3, Fig. 2 is a kind of planar structure schematic diagram of display panel provided by the invention；Fig. 3 is in Fig. 2
A-A is to sectional view.Display panel 100 includes the color membrane substrates 10 being oppositely arranged and array substrate 20, the color membrane substrates in Fig. 3
10 are equipped with black matrix 11 close to the side of the array substrate 20, and the color membrane substrates 10 are close to the side of the array substrate 20
Equipped with cylindrical spacer 12,12 planar structure schematic diagram of cylindrical spacer is shown in Fig. 2, at least one described cylindrical spacer 12 is arranged
There are hollow-out parts 121 and first 122, fills air in the hollow-out parts 121, described first 122 in the color membrane substrates 10
On orthographic projection surround orthographic projection of the hollow-out parts 121 on the color membrane substrates 10, described first 122 in the color film
Orthographic projection on substrate 10 is located at the black matrix 11 in the orthographic projection on the color membrane substrates 10；Certainly as can be known from Fig. 2,
Display panel 100 includes pixel 13, includes sub-pixel R and G in pixel 13, which is not described herein again.
In conjunction with Fig. 2 and Fig. 3, array substrate 20 includes fingerprint identification area 21, and fingerprint identification area 21 includes multiple in array row
Array substrate 20 is arranged in close to the side of color membrane substrates 10 in the fingerprint identification unit 22 of cloth, fingerprint identification unit 22, and fingerprint is known
Other unit 22 is located at hollow-out parts 121 in the orthographic projection on color membrane substrates 10 in the orthographic projection on color membrane substrates 10.Of the invention
The continuous respectively arranged position projection of two fingerprint identification units respectively falls in the sub- picture of color membrane substrates in the attached drawing of embodiment
It is only schematical herein at the position of the black matrix of plain R and the side sub-pixel G, company of the present invention for fingerprint identification unit
The continuous number placed and position are not especially limited.
Fingerprint identification unit 22 is isolated in the hollow-out parts 121 of cylindrical spacer 12 in Fig. 3, in fingerprint identification unit 22
Side's (between color membrane substrates 10 and array substrate 20, that is, the hollow-out parts of cylindrical spacer 12) filling is air without liquid crystal,
The light of backlight sources of display device passes through array substrate 20 and color membrane substrates 10 reach the process of finger and reflect from finger and reach
The process of fingerprint identification unit 22 only reflects, and no refraction eliminates interference of the 22 top liquid crystal of fingerprint identification unit to optical path,
Fingerprint recognition signal is more acurrate.The effect of cylindrical spacer is support color membrane substrates and array substrate in the prior art, is improved aobvious
The thickness uniformity of display screen entirety, and the cylindrical spacer 12 in the present invention is in addition to above-mentioned function, in hollow-out parts 121
Air is filled, after liquid crystal is completely cut off, interference of the liquid crystal to optical path is eliminated, improves the ability of fingerprint recognition.Furthermore by column every
First 122 of underbed 12 is located at black matrix 11 in the orthographic projection on color membrane substrates 10 in the orthographic projection on color membrane substrates 10,
On the brightness of display panel 100 without influence.
Referring to Fig. 4 and Fig. 5, Fig. 4 is another display panel planar structure schematic diagram provided by the invention；Fig. 5 is this hair
Another display panel planar structure schematic diagram of bright offer；Display panel 100 includes viewing area 30 and surrounds described in Fig. 4
The non-display area 40 of viewing area, fingerprint identification area 21 and viewing area 30 are least partially overlapped.
Fingerprint identification area 21 partly overlaps with viewing area 30 in Fig. 4, and display panel can be realized by fingerprint identification area 21
Part fingerprint identification function, reduce fingerprint identification unit 22 wiring, be conducive to production.
Fingerprint identification area 21 and viewing area 30 are completely overlapped in Fig. 5.Fingerprint identification unit 22 is covered with viewing area 30, finger touching
Touching any position on the screen can trigger the progress fingerprint recognition of fingerprint identification unit 22, realizes full frame fingerprint identification function, makes
Fingerprint recognition more convenient and quicker.
It include multiple fingerprint identification units 22 being arranged in array, the knot of display panel 100 in certain fingerprint identification area 21
Structure optionally uses the structure in attached drawing 2 and Fig. 3, and cylindrical spacer 12 completely cuts off liquid crystal in the interior filling air of hollow-out parts 121
Afterwards, interference of the liquid crystal to optical path is eliminated, the ability of fingerprint recognition is improved.By first 122 of cylindrical spacer 12 in color film
Orthographic projection on substrate 10 is located at black matrix 11 in the orthographic projection on color membrane substrates 10, to the brightness of display panel 100 without shadow
It rings.
With continued reference to Fig. 3, black matrix 11 is provided with multiple collimating apertures 111 in Fig. 3, and the collimating aperture 111 is in color membrane substrates
Orthographic projection on 10 is located at the hollow-out parts 121 in the orthographic projection on color membrane substrates 10.Collimating aperture 111, collimating aperture 111 are set
It is aligned with hollow-out parts 121, after color membrane substrates 10 and array substrate 20 are bonded, the induction light of fingerprint identification unit 22 just can be with
Through preventing black matrix from covering the induction light of fingerprint identification unit 22.
Referring to figure 6 and figure 7, Fig. 6 is B-B direction sectional view in Fig. 2；Fig. 7 be in Fig. 2 A-A to another sectional view；In Fig. 6
The display panel further includes the liquid crystal layer 60 between color membrane substrates 10 and array substrate 30, and cylindrical spacer 12 is in a first direction
The height H of X is 1.0-1.2 times of the thickness t of the liquid crystal layer 60 in a first direction, and the first direction X is perpendicular to described
The direction of display panel.It should be noted that illustrating only the position of color membrane substrates 10, array substrate 30 and liquid crystal layer 60 in Fig. 6
Relationship is set, does not illustrate the specific structure on color membrane substrates 10 and array substrate 30.
In conjunction with Fig. 3 and Fig. 6, the height H of the X in a first direction of cylindrical spacer 12 is equal to liquid crystal layer 60 in first party in Fig. 3
To thickness t, the height of cylindrical spacer 12 is equal with the thickness of liquid crystal layer 60 at this time, and in processing procedure, technique is easy to accomplish, only
It need to be identical as the thickness of liquid crystal layer 60 by the height processing procedure of cylindrical spacer 12.
In conjunction with Fig. 7 and Fig. 6, the height H of the X in a first direction of cylindrical spacer 12 is greater than liquid crystal layer 60 in first party in Fig. 7
To thickness t, t < H≤1.2t, form liquid crystal sylphon after color membrane substrates 10 and array substrate 20 are bonded, need to liquid crystal sky
Liquid crystal is perfused in box, and the height of cylindrical spacer 12 is made into the thickness t greater than liquid crystal layer 60 at this time, can preferably completely cut off liquid crystal
Into in 12 hollow-out parts 121 of cylindrical spacer, prevent liquid crystal molecule from entering in hollow-out parts 121.In order to guarantee that display panel is whole
The thickness of body is consistent, and needs that one layer of planarization layer 23 is arranged close to the side of color membrane substrates in array substrate 20, flat
Change and multiple grooves 231 are set on layer 23, groove 231 is matched with cylindrical spacer 12, then it is high can to accommodate cylindrical spacer 12
That a part of 60 thickness t of liquid crystal layer out, such as when the height H of cylindrical spacer 12 in a first direction is equal to 1.2t, groove
The depth of X is 0.2t in a first direction, and groove can accommodate the 0.2t that cylindrical spacer 12 is higher by 60 thickness of liquid crystal layer, in not shadow
Cylindrical spacer 12 is sealed while ringing display panel integral thickness well, guarantees the hollow-out parts 121 of cylindrical spacer 12
It is interior to enter liquid crystal.
Referring to Fig. 8 and Fig. 9, Fig. 8 is a kind of fingerprint recognition drive circuit schematic diagram provided by the invention；Fig. 9 is that fingerprint is known
The partial enlarged view of other unit；Array substrate 20 includes fingerprint recognition driving circuit 80, and fingerprint recognition driving circuit 80 includes more
A first film transistor 81, at least one first film transistor 81 are connected with fingerprint identification unit 22, are one in Fig. 9
First film transistor 81 drives a fingerprint identification unit 22, naturally it is also possible to which a first film transistor 81 drives multiple
Fingerprint identification unit 22 or multiple first film transistors 81 drive a fingerprint identification unit 22, herein to the first film
Transistor 81 drives the quantity of fingerprint identification unit 22 and the quantity of the first film transistor of driving fingerprint identification unit not to make
It is specific to limit.Optional fingerprint identification unit may include light sensation diode 82.In the present embodiment, array substrate 20 further includes more
(first scan line 50 of the present embodiment is used for fingerprint identification unit item the first scan line 50 that Y is extended in a second direction
22 provide scanning drive signal), optionally the first scan line 50 in the present invention can be multiplexed with the pixel in array substrate 20
The scan line of driving circuit, fingerprint recognition driving circuit further include the first scan line 50 and the first data line 60, the first scan line
50 and 60 transposition insulator of the first data, multiple 22 regions of fingerprint identification unit are limited, with a line fingerprint identification unit 22
In at least two fingerprint identification units 22 be electrically connected with the first scan line of same 50.
Referring to Fig. 9, the first data line 60 is connected with source electrode 812 or drain electrode 813；First scan line 50 and 811 phase of grid
Connection.Fingerprint identification unit 22 includes photodiode 82, and one end of two pole 82 of photoelectricity is connected with the source electrode or drain electrode
It connects, the other end is electrically connected with the common electrode layer.As shown in figure 9, fingerprint identification unit 22 includes photodiode 82.First
Thin film transistor (TFT) 81 include grid 811, source electrode 812, drain electrode 813, grid 811 is electrically connected with the first scan line 50, source electrode 812 and
The cathode 821 of photodiode 82 is electrically connected, and drain electrode 813 is electrically connected with the first data line 60, the anode 822 of photodiode 82
It is connected to common voltage Vbias, the cathode 821 of photodiode 82 is connected to signal voltage Vref.
The working principle of fingerprint identification unit 22: the first film transistor of the first scan line 50 and fingerprint identification unit 22
81 grid 811 is electrically connected, and can be opened first film transistor 81 by providing electric signal to the first scan line 50, be made fingerprint
Recognition unit 22 is opened line by line along first direction Y or disposable opening, when photodiode 82 has illumination, photoelectricity two
The corresponding signal voltage Vref of cathode 821 of pole pipe 82 can change, i.e., when finger contact screen, light source is irradiated to finger
It is reflected when on the valley line and crestal line of fingerprint, not due to the reflection angle of valley line and crestal line and the intensity of illumination that reflects back
Together, by light projection to photodiode 82, the resistance value of photodiode 82 is caused to change, generates leakage current signal, light
Electric diode 82 is spread out of leakage current signal to the first data line 60 by first film transistor 81 in the conductive state, with
The connected fingerprint recognition signal receiving unit 40 of first data line 60 identifies the valley line and crestal line of fingerprint.It should be noted that
When gauge without light source irradiates, photodiode 82 does not send any electric signal to the first data line 60.
In conjunction with Figure 10, Figure 10 it is that for A-A to another sectional view, the array substrate 20 includes substrate layer 88 in Fig. 2, and
Active layer 884, the first metal layer 881, second metal layer 882 and the common electrode layer 883 being isolated by insulating layer 885, the lining
Bottom 88 is located at the side that the array substrate 20 deviates from the color membrane substrates 10, the active layer 884, the first metal layer
881, the second metal layer 882 and the common electrode layer 883 direction of plane where perpendicular to the display panel are set
It sets in the substrate layer close to the side of the display panel；The first film transistor includes being located at the first metal layer
Grid 811 and positioned at the second metal layer source electrode 812 and drain electrode 813；Two 22 phases of fingerprint identification unit in Figure 10
Connection, the drain electrode 813 of one end and second metal layer connects after connection, and the public electrode 814 of the other end and common electrode layer 883 connects
It connects, is equivalent to a first film transistor 81 here and drives two fingerprint identification units 22, it should be noted that finger here
Line recognition unit 22 is optionally photodiode.The one or two layers of oxide or nitride that insulating layer can be Si stack
Or organic film or passivation layer etc..The drain electrode 813 of first film transistor 81 passes through the negative of via hole and fingerprint identification unit 22
Pole is connected.Certainly the first film transistor 81 in the present invention can also drive three or three or more fingerprint identification units
22, it is not specifically limited here.
As shown in Figure 10, optionally, the fingerprint identification unit 22 is arranged with 884 same layer of active layer, in this way same
Fingerprint identification unit 22 can be arranged in array substrate 20 in one processing procedure, reduce film layer setting, reduce integral array substrate
Thickness.
Optionally, when the backlight assembly of display device is downward back light, fingerprint identification unit can also be made in backlight
In the drive substrate of the micro- LED in source, it is not specifically limited here.
1, Figure 11 is a kind of production method flow chart of display panel provided by the invention referring to Fig.1, and production method includes
Following steps:
Step 101, the color membrane substrates being oppositely arranged and array substrate are provided；
Step 102, the offer color membrane substrates include: that black matrix is arranged in the side close to the array substrate,
Cylindrical spacer is set close to the side of the array substrate in the color membrane substrates, at least one described cylindrical spacer setting
There are hollow-out parts and first, the hollow-out parts fill air, and first orthographic projection on the color membrane substrates surrounds institute
Orthographic projection of the hollow-out parts on the color membrane substrates is stated, first orthographic projection on the color membrane substrates is located at described black
Matrix is in the orthographic projection on the color membrane substrates；
The structure of color membrane substrates, referring to shown in Fig. 2 and Fig. 3.
Step 103, the offer array substrate includes: in the array substrate close to the side of the color membrane substrates
Fingerprint identification area is set, and the fingerprint identification area includes multiple fingerprint identification units being arranged in array, the fingerprint recognition list
Member is located at the hollow-out parts in the orthographic projection on the color membrane substrates in the orthographic projection on the color membrane substrates；
Step 104, the color membrane substrates and the array substrate opposite direction are bonded and form display panel sylphon, shown to described
Show and liquid crystal is perfused in panel sylphon.
Optionally, the color membrane substrates and the array substrate opposite direction will be bonded after forming display panel sylphon, will be shown
Show that panel sylphon is placed in liquid crystal bottle placer to vacuumize, display panel sylphon is put into liquid crystal liquid under vacuum conditions (or
It is soaked with the sponge strip of liquid crystal), guarantee that liquid crystal liquid did not had display panel sylphon, nitrogen is passed through into bottle placer, due to display panel
Sylphon is vacuum environment, and liquid crystal is poured into display panel sylphon under the action of atmospheric pressure.Its other party can certainly be used
Method perfusion, as long as can guarantee in hollow-out parts without liquid crystal.
After setting has hollow-out parts and first cylindrical spacer on the color membrane substrates provided in method in the present invention,
Air is filled in hollow-out parts, herein, the filler in hollow-out parts is not especially limited, and depends entirely on array substrate and coloured silk
After ilm substrate opposite direction process environments locating when being bonded, color membrane substrates and array substrate fitting, by fingerprint recognition list in hollow-out parts
Member is closed, then liquid crystal will not enter in hollow-out parts after perfusion liquid crystal into display panel sylphon, fingerprint identification unit
Top there will not be liquid crystal, eliminate interference of the liquid crystal to fingerprint recognition optical path.
In some alternative embodiments, the color membrane substrates and the array substrate opposite direction are bonded and to be formed by step 104
Display panel sylphon, Xiang Suoshu display panel sylphon is interior to be perfused liquid crystal, comprising the following steps:
A, in the color membrane substrates close to the side of the array substrate or in the array substrate close to the color film
The side of substrate coats frame glue pattern, and note is reserved at the frame glue of the close color membrane substrates or array substrate edge
The color membrane substrates box array substrate opposite direction for coating frame glue pattern is bonded to form sylphon or will coat frame glue pattern by brilliant mouth
The array substrate and color membrane substrates opposite direction be bonded to form display panel sylphon；
B is solidified the frame glue in the display panel sylphon by ultraviolet light or hot oven；
C injects liquid crystal into the display panel sylphon by the brilliant mouth of the note；
Optionally, the color membrane substrates and the array substrate opposite direction will be bonded after forming display panel sylphon, will be shown
Show that panel sylphon is placed in liquid crystal bottle placer to vacuumize, display panel sylphon is put into liquid crystal liquid under vacuum conditions (or
It is soaked with the sponge strip of liquid crystal), guarantee that liquid crystal liquid did not had the brilliant mouth of note, nitrogen is passed through into bottle placer, since display panel sylphon is
Liquid crystal is poured into display panel sylphon by infusing brilliant mouth under the action of atmospheric pressure by vacuum environment.It can certainly be used
He is perfused method, as long as can guarantee in hollow-out parts without liquid crystal.
D closes the brilliant mouth of the note.
Brilliant mouth is optionally infused using shadowless glue, light-sensitive emulsion or ultraviolet light-cured glue closing in the step.
Liquid crystal is perfused due to being first bonded color membrane substrates and array substrate opposite direction in the present invention afterwards, so cylindrical spacer
Without liquid crystal in the space of hollow-out parts and array substrate composition, it is therefore an objective to guarantee that the top of fingerprint identification unit without liquid crystal, excludes liquid
Interference and distortion of the crystalline substance to fingerprint recognition optical path.
In some optional embodiments, Figure 12 is please referred to, Figure 12 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, display device 200 provided in this embodiment, including the display panel 100 in above-described embodiment.Figure 12 embodiment
It only takes the mobile phone as an example, display device 200 is illustrated, it is to be understood that display device provided in an embodiment of the present invention
200, it can be other display devices 200 having a display function such as computer, TV, Electronic Paper, display device for mounting on vehicle, the present invention
This is not specifically limited.Display device 200 provided in an embodiment of the present invention has display panel provided in an embodiment of the present invention
100 beneficial effect can specifically refer to the various embodiments described above illustrating for display panel 100, and the present embodiment is herein
It repeats no more.
Through the foregoing embodiment it is found that display panel provided by the invention and preparation method thereof, display device, are at least realized
It is following the utility model has the advantages that
Heretofore described color membrane substrates are equipped with cylindrical spacer close to the side of the array substrate, described at least one
Cylindrical spacer is provided with hollow-out parts and first, fills air in the hollow-out parts, described first in the color membrane substrates
On orthographic projection surround orthographic projection of the hollow-out parts on the color membrane substrates, described first on the color membrane substrates
Orthographic projection is located at the black matrix in the orthographic projection on the color membrane substrates；The array substrate includes fingerprint identification area, institute
Stating fingerprint identification area includes multiple fingerprint identification units being arranged in array, and the fingerprint identification unit is arranged in the array base
Plate is located at the hollow out close to the side of the color membrane substrates, orthographic projection of the fingerprint identification unit on the color membrane substrates
The liquid crystal above fingerprint identification unit is isolated in the orthographic projection on the color membrane substrates, through cylindrical spacer for portion, is reduced
Distortion and interference of the liquid crystal to fingerprint identification unit optical path reduces signal interference, improves fingerprint capacity.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (11)
1. a kind of display panel, which is characterized in that including the color membrane substrates being oppositely arranged and array substrate, the color membrane substrates are leaned on
The side of the nearly array substrate is equipped with black matrix,
The color membrane substrates are equipped with cylindrical spacer close to the side of the array substrate, at least one described cylindrical spacer is set
Hollow-out parts and first are equipped with, fill air in the hollow-out parts, first orthographic projection on the color membrane substrates is enclosed
Around orthographic projection of the hollow-out parts on the color membrane substrates, first orthographic projection on the color membrane substrates is located at institute
Black matrix is stated in the orthographic projection on the color membrane substrates；
The array substrate includes fingerprint identification area, and the fingerprint identification area includes multiple fingerprint recognition lists being arranged in array
The array substrate is arranged in close to the side of the color membrane substrates, the fingerprint identification unit in member, the fingerprint identification unit
It is located at the hollow-out parts in the orthographic projection on the color membrane substrates in the orthographic projection on the color membrane substrates.
2. display panel according to claim 1, which is characterized in that the display panel includes viewing area and around institute
The non-display area of viewing area is stated, the fingerprint identification area and the viewing area are least partially overlapped.
3. display panel according to claim 1, which is characterized in that the black matrix is provided with multiple collimating apertures, described
Collimating aperture is located at the hollow-out parts in the orthographic projection on the color membrane substrates in the orthographic projection on the color membrane substrates.
4. display panel according to claim 1, which is characterized in that the display panel further includes color membrane substrates and array
Liquid crystal layer between substrate, the height of the cylindrical spacer in a first direction are the thickness of the liquid crystal layer in a first direction
1.0-1.2 times, the first direction is the direction perpendicular to the display panel.
5. display panel according to claim 1, which is characterized in that the array substrate includes fingerprint recognition driving electricity
Road, the fingerprint recognition driving circuit include multiple first film transistors, at least one described first film transistor and institute
Fingerprint identification unit is stated to be connected.
6. display panel according to claim 5, which is characterized in that the array substrate includes substrate layer, and by exhausted
Active layer, the first metal layer, second metal layer and the common electrode layer of edge layer isolation, the substrate layer are located at the array substrate
Away from the side of the color membrane substrates, the active layer, the first metal layer, the second metal layer and the public electrode
The substrate layer is arranged in close to the side of the display panel in layer direction of plane where perpendicular to the display panel；
The first film transistor includes positioned at the grid of the first metal layer and positioned at the source of the second metal layer
Pole and drain electrode；
The fingerprint identification unit includes photodiode, and one end of the photodiode is connected with the source electrode or drain electrode
It connects, the other end is electrically connected with the common electrode layer.
7. display panel according to claim 6, which is characterized in that the fingerprint recognition driving circuit further includes first sweeping
Line and the first data line are retouched, first data line is connected with the source electrode or drain electrode；First scan line and the grid
Pole is connected.
8. display panel according to claim 6, which is characterized in that the fingerprint identification unit and the active layer same layer
Setting.
9. a kind of method for making any display panel of claim 1 to 8 characterized by comprising
The color membrane substrates being oppositely arranged and array substrate are provided；
The offer color membrane substrates include: that black matrix is arranged in the side close to the array substrate, in the color film base
Cylindrical spacer is arranged close to the side of the array substrate in plate, at least one described cylindrical spacer is provided with hollow-out parts and the
One, the hollow-out parts fill air, and first orthographic projection on the color membrane substrates is around the hollow-out parts in institute
The orthographic projection on color membrane substrates is stated, first orthographic projection on the color membrane substrates is located at the black matrix in the coloured silk
In orthographic projection in ilm substrate；
The offer array substrate includes: that fingerprint recognition is arranged close to the side of the color membrane substrates in the array substrate
Area, the fingerprint identification area include multiple fingerprint identification units being arranged in array, and the fingerprint identification unit is in the color film
Orthographic projection on substrate is located at the hollow-out parts in the orthographic projection on the color membrane substrates；
The color membrane substrates and the array substrate opposite direction are bonded to form display panel sylphon, in Xiang Suoshu display panel sylphon
Liquid crystal is perfused.
10. the production method of display panel according to claim 9, which is characterized in that it is described by the color membrane substrates and
The array substrate opposite direction is bonded to form display panel sylphon, and liquid crystal is perfused in Xiang Suoshu display panel sylphon, comprising:
In the color membrane substrates close to the side of the array substrate or in the array substrate close to the color membrane substrates
Side coats frame glue pattern, reserves at the frame glue of the close color membrane substrates or array substrate edge and infuses brilliant mouth,
The color membrane substrates box array substrate opposite direction for coating frame glue pattern is bonded the institute to form sylphon or will coat frame glue pattern
It states array substrate and color membrane substrates opposite direction is bonded to form display panel sylphon；
The frame glue in the display panel sylphon is solidified by ultraviolet light or hot oven；
Liquid crystal is injected into the display panel sylphon by the brilliant mouth of the note；
Close the brilliant mouth of the note.
11. a kind of display device, which is characterized in that including any display panel of claim 1-8.
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| CN201811618992.9A CN109541857A (en) | 2018-12-28 | 2018-12-28 | Display panel and preparation method thereof, display device |
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| CN201811618992.9A CN109541857A (en) | 2018-12-28 | 2018-12-28 | Display panel and preparation method thereof, display device |
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