CN110376782A - A kind of display panel and display device - Google Patents
A kind of display panel and display device Download PDFInfo
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- CN110376782A CN110376782A CN201910703623.8A CN201910703623A CN110376782A CN 110376782 A CN110376782 A CN 110376782A CN 201910703623 A CN201910703623 A CN 201910703623A CN 110376782 A CN110376782 A CN 110376782A
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- optically denser
- denser medium
- medium layer
- display panel
- layer
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- 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
- G06V40/1365—Matching; Classification
Abstract
The invention discloses a kind of display panel and display device, which includes: color membrane substrates；Array substrate is oppositely arranged with color membrane substrates, and array substrate includes multiple photo cells；Collimating aperture, collimating aperture are arranged in a one-to-one correspondence with photo cell, so that showing that the light of the finger tip reflection of side is incident to corresponding photo cell by collimating aperture by display panel；First optically denser medium layer, is set to side of the color membrane substrates far from array substrate；First optically denser medium layer includes and the one-to-one first optically denser medium block of collimating aperture；Corresponding collimating aperture is completely covered in the upright projection of first optically denser medium block on a display panel；The refractive index of first optically denser medium layer is greater than 1.5.The present invention provides a kind of display panel and display devices, to solve the problems, such as the fingerprint recognition signal inaccuracy of existing display panel.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display panel and display devices.
Background technique
With the rapid development of display technology, the display panel with fingerprint identification function has occurred gradually over people's
In life, the display panel with fingerprint identification function is widely used in the electronic equipments such as mobile phone, computer.
The current display panel with fingerprint identification function combines fingerprint identification technology with display technology, so that
Fingerprint identification region is located at viewing area, overcomes and accounts for the screen that display panel caused by non-display area is arranged in fingerprint identification region
Than low problem, while when avoiding the back side that fingerprint identification region is arranged in viewing area, caused poor user experience is asked
Topic.
But thicker optical film layer and optical texture are generally comprised in display panel, fingerprint Identification sensor is generally integrated
In array substrate, the reflected light of finger tip positioned at the display side of display panel passes through each optical film layer and optical texture
When reaching fingerprint Identification sensor, the received light intensity of fingerprint Identification sensor is weaker, and optical path is spuious, causes fingerprint recognition
Signal inaccuracy.
Summary of the invention
The embodiment of the invention provides a kind of display panel and display devices, to solve the fingerprint recognition of existing display panel
The problem of signal inaccuracy.
In a first aspect, the embodiment of the invention provides a kind of display panels, comprising: color membrane substrates；
Array substrate is oppositely arranged with the color membrane substrates, and the array substrate includes multiple photo cells；
Collimating aperture, the collimating aperture are arranged in a one-to-one correspondence with the photo cell, so that showing side by the display panel
The light of finger tip reflection be incident to the corresponding photo cell by the collimating aperture；
First optically denser medium layer is set to side of the color membrane substrates far from the array substrate；First light is close
Dielectric layer includes and the one-to-one first optically denser medium block of the collimating aperture；The first optically denser medium block is in the display surface
The corresponding collimating aperture is completely covered in upright projection on plate；
The refractive index of the first optically denser medium layer is greater than 1.5.
Optionally, the material of the first optically denser medium layer is tin indium oxide, silica, silicon nitride or titanium oxide.
Optionally, the first polaroid is set to the first optically denser medium layer close to the side of the color membrane substrates；Cover board
Glass is set between the first optically denser medium layer and first polaroid.
Optionally, the diameter range of the collimating aperture is 4 μm~6 μm.
Optionally, the display panel further include: the second optically denser medium layer；The second optically denser medium layer is set to first
Side of the optically denser medium layer far from the color membrane substrates, and the second optically denser medium layer covers first optically denser medium
Layer；The refractive index of the second optically denser medium layer is greater than or equal to 1.3, and is less than or equal to 1.5.
Optionally, the material of the second optically denser medium layer is fluororesin, magnesium fluoride, calcirm-fluoride or quartz.
Optionally, the collimating aperture includes at least one layer of light shield layer；The color membrane substrates include glass substrate, the shading
Layer is set to side of the glass substrate far from the first optically denser medium layer；The display panel further include: at least one layer of
Third optically denser medium layer；The third optically denser medium layer be set to the color membrane substrates glass substrate and the light shield layer it
Between；The refractive index of the third optically denser medium layer is greater than 1.5.
Optionally, the upright projection of every layer of third optically denser medium layer on said display panel covers all described
Collimating aperture.
Optionally, every layer of third optically denser medium layer includes and the one-to-one third optically denser medium of the collimating aperture
Block；The corresponding collimating aperture is completely covered in the upright projection of the third optically denser medium block on said display panel.
Optionally, the display panel includes multilayer third optically denser medium layer；The battle array is being directed toward by the color membrane substrates
On the direction of column substrate, the refractive index of each third optically denser medium layer successively increases.
Second aspect, the embodiment of the invention also provides a kind of display device, the display device includes that the present invention is any
The display panel that embodiment provides.
In the present invention, display panel includes the color membrane substrates being oppositely arranged and array substrate, is provided with light in array substrate
Feel unit, display panel further includes the collimating aperture being arranged in a one-to-one correspondence with photo cell, so that by the finger of display panel side
The light of end reflection is incident to corresponding photo cell by collimating aperture.Display panel further includes positioned at the display side of color membrane substrates
The first optically denser medium layer, the first optically denser medium layer include with the one-to-one first optically denser medium block of collimating aperture, and first
Corresponding collimating aperture is completely covered in the upright projection of optically denser medium block on a display panel, and the refractive index of the first optically denser medium layer is big
In 1.5, then the refractive index of the first optically denser medium layer is greater than the refractive index of the refractive index of finger tip and the glass of color membrane substrates, with finger tip
It is larger with the refractive index difference of the glass of color membrane substrates, so that the reflectivity of the light reflected from finger tip effectively improves, and the
One optically denser medium block and collimating aperture correspond, and increase the luminous flux for reflexing to collimating aperture, to increase the light of photo cell
Reception amount improves the light transmission rate of the fingerprint identification area of display panel, and then improves the accuracy of fingerprint recognition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of display panel in the prior art；
Fig. 2 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It is the structural schematic diagram of display panel in the prior art with reference to Fig. 1, Fig. 1, for liquid crystal display panel, display panel
Including the liquid crystal layer 13 between array substrate 11, color membrane substrates 12 and array substrate 11 and color membrane substrates 12.In addition, in color film
Substrate 12 is also possible to be provided with polaroid 14 and glass cover-plate 15 close to the side of finger tip 2, and the light for fingerprint recognition is successively
It is emitted to finger tip 2 across array substrate 11, liquid crystal layer 13, color membrane substrates 12, polaroid and glass cover-plate 15, then by finger tip 2
The photo cell 111 in array substrate 11 is reflexed to by above-mentioned stepped construction, the stepped construction of above-mentioned display panel 1 is thicker,
So that the light that finger tip 2 reflexes on photo cell 111 is weaker, and optical path is spuious, the fingerprint image ratio that photo cell 111 obtains
It is relatively fuzzy.
To solve the above problems, the embodiment of the invention provides one kind display panel, comprising: color membrane substrates；
Array substrate is oppositely arranged with the color membrane substrates, and the array substrate includes multiple photo cells；
Collimating aperture, the collimating aperture are arranged in a one-to-one correspondence with the photo cell, so that showing side by the display panel
The light of finger tip reflection be incident to the corresponding photo cell by the collimating aperture；
First optically denser medium layer is set to side of the color membrane substrates far from the array substrate；First light is close
Dielectric layer includes and the one-to-one first optically denser medium block of the collimating aperture；The first optically denser medium block is in the display surface
The corresponding collimating aperture is completely covered in upright projection on plate；
The refractive index of the first optically denser medium layer is greater than 1.5.
Display panel provided in an embodiment of the present invention, including the color membrane substrates being oppositely arranged and array substrate, array substrate
On be provided with photo cell, display panel further includes the collimating aperture being arranged in a one-to-one correspondence with photo cell, so that by display surface
The light of the finger tip reflection of plate side is incident to corresponding photo cell by collimating aperture.Display panel further includes being located at color film base
First optically denser medium layer of the display side of plate, the first optically denser medium layer include and one-to-one first optically denser medium of collimating aperture
Block, and corresponding collimating aperture, the first optically denser medium is completely covered in the upright projection of the first optically denser medium block on a display panel
The refractive index of layer is greater than 1.5, then the refractive index of the first optically denser medium layer is greater than the refractive index of finger tip and the glass of color membrane substrates
Refractive index, it is larger with the refractive index difference of finger tip and the glass of color membrane substrates, so that the reflectivity of the light reflected from finger tip has
Effect improves, and the first optically denser medium block and collimating aperture correspond, and increase the luminous flux for reflexing to collimating aperture, to increase light
The light receiver amount for feeling unit improves the light transmission rate of the fingerprint identification area of display panel, and then improves the accurate of fingerprint recognition
Property.
It is core of the invention thought above, following will be combined with the drawings in the embodiments of the present invention, to the embodiment of the present invention
In technical solution be clearly and completely described.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Under the premise of making creative work, every other embodiment obtained be shall fall within the protection scope of the present invention.
Fig. 2 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention, and display panel includes being oppositely arranged
Color membrane substrates 12 and array substrate 11 and array substrate 11 and color membrane substrates 12 between liquid crystal layer 13.Array substrate 11
It is set to side of the color membrane substrates 12 far from finger tip 2, array substrate 11 is provided with a multiple photo cells 111, for finger tip 2
The light of reflection is received, in order to form fingerprint image.Display panel includes collimating aperture 17, and collimating aperture 17 will be for that will set
Light in angle is chosen, and is suitable for by angle, and orderly aligned light is transmitted to and the one-to-one light sensation of collimating aperture 17
Unit 111 avoids other rambling light from generating interference to the fingerprint image that photo cell 111 detects.
First optically denser medium layer 16 is set to side of the color membrane substrates 12 far from array substrate 11, i.e. the first optically denser medium layer
16 are set to color membrane substrates 12 close to the side of finger tip 2, and the first optically denser medium layer 16 includes and collimating aperture 17 one-to-one
One optically denser medium block 161, and on the direction perpendicular to display panel, the first optically denser medium block 161 is completely covered corresponding
Collimating aperture 17.It is known that the refractive index of finger tip 2 is n_s=1.4, the refractive index n_g=of the glass substrate 121 of color membrane substrates 12
1.5, the refractive index n1 of the first optically denser medium layer 16 is greater than 1.5, then the refractive index n1 of the first optically denser medium layer 16 is greater than finger tip 2
Refractive index is the refractive index n_g of the glass substrate 121 of n_s and color membrane substrates 12, the first optically denser medium layer 16 with and its is adjacent
The refractive index of finger tip 2 differs greatly, and also differs more with the refractive index of the glass substrate 121 adjacent with its, according to reflectivity
FormulaIt is found that if the refractive index difference in n of the refractive index n1 of the first optically denser medium layer 16 and adjacent film layer structure
Bigger, then the reflection effect enhancing at the interface between the first optically denser medium layer 16 and the adjacent film layers, the reflectivity of light increase.
Enable photo cell 111 corresponding with the first optically denser medium block 161 to obtain higher luminous flux, improves display panel
The transmitance of the light of the reflection of fingerprint identification region.
Optionally, display panel can also include: the first polaroid 14, be set to the first optically denser medium layer 16 close to color film
The side of substrate 12；Cover-plate glass 15 is set between the first optically denser medium layer 16 and the first polaroid 14.As shown in Fig. 2, then
First optically denser medium layer 16 is set between finger tip 2 and cover-plate glass 15.Preferably, the first optically denser medium layer 16 respectively with finger tip
2 and cover-plate glass 15 contact, the refractive index of the first optically denser medium layer 16 is greater than the refractive index of cover-plate glass 15 and the refraction of finger tip 2
Rate, it is larger with the difference of the refractive index of finger tip 2 and cover-plate glass 15, then the light of finger tip 2 is reflexed to, in the first optically denser medium layer
Reflectivity on interface between 16 and finger tip 2 increases, improve display panel the reflection of fingerprint identification region light it is saturating
Cross rate.
Optionally, the first optically denser medium layer 16 is generally inorganic material, and the material of the first optically denser medium layer 16 can be oxygen
Change indium tin, silica, silicon nitride or titanium oxide.Tin indium oxide, silica, silicon nitride or titanium oxide are that transparent reflectivity is high
In 1.5 material.The refractive index n1 of tin indium oxide is 2, and the refractive index n1 of silica is 1.65, and the refractive index n1 of silicon nitride is
2.1, the refractive index of above-mentioned material is all larger than 1.5, can effectively enhance the light reflectance in fingerprint identification process.
As shown in Fig. 2, the opticpath for showing the fingerprint identification region for being provided with the first optically denser medium layer 16 in Fig. 2 shows
It is intended to, the opticpath schematic diagram of the fingerprint identification region of not set first optically denser medium layer 16 is equally also shown as a comparison
Example.With reference to Fig. 2, when being provided with the first optically denser medium layer 16, the first optically denser medium layer 16 of the ridge position of optional print with
Between finger tip 2 between the finger tip 2 and air layer 3 of the paddy position of the reflected light Ra and fingerprint at interface interface reflected light Rb,
The reflected light Rc at interface between one optically denser medium layer 16 and air layer 3, in the present embodiment, because at the paddy position of fingerprint,
There is also certain thickness air layer 3 between one optically denser medium layer 16 and finger tip 2, then reflected light include finger tip 2 and air layer 3 it
Between interface reflected light Rb and the first optically denser medium layer 16 and air layer 3 between interface reflected light Rc.Similarly, as shown in Fig. 2,
In the not set first optically denser medium layer 16 of display panel, the cover-plate glass 15 and finger tip of the ridge position of fingerprint can be equally chosen
Reflected light Re and air layer 3 and lid between 2 between the reflected light Rd at interface and the air layer 3 of fingerprint valley position and finger tip 2
The reflected light Rf at interface between glass sheet 15.Material of the tin indium oxide as the first optically denser medium layer 16 in the present embodiment may be selected
Material, refractive index n1=2.0 calculate each reflected light Ra~Rf of above-mentioned selection, obtain reflected light shown in table 1
The contrast table of reflectivity, table 1 are reflection of the display panel when the first optically denser medium layer and not set optically denser medium layer is arranged
The contrast table of rate.Reflectivity in table 1 indicates the light reflectance in interface contacts, and what reflection * Tr 98% was indicated is reflection
Light by display panel laminated construction reach photo cell 111 light reflectance.Because of the lamination knot of display panel
The transmitance of structure is 98%, so the luminous flux for being actually reached photo cell 111 is the 98% of interface contacts.As shown in Table 1,
It is provided in the present embodiment in the fingerprint identification region of the first optically denser medium layer 16, the reflectivity Ra=3.05% of ridge position, paddy
The reflectivity Rb+Rc=13.61% of position, and be not provided in the comparative example of the first optically denser medium layer 16, the reflection of ridge position
Rate Rd=0.12%, the reflectivity Re+Rf=6.78% of paddy position, scheme of the scheme of the present embodiment relative to comparative example, enter
The luminous flux for being incident upon photo cell 111 increases 2.4 times, improves the light reflectance of fingerprint identification region, enhances fingerprint
The precision of identification process.
Table 1: reflectivity of the display panel when the first optically denser medium layer and not set optically denser medium layer is arranged
Contrast table
Above-mentioned table 1 shows the reflectivity at interface between the first optically denser medium layer 16 and finger tip 2.To in this present embodiment
Scheme, the first optically denser medium layer 16 is in the light reflectance for improving interface contacts between the first optically denser medium layer 16 and finger tip 2
While, also improve the light reflectance of the interface contacts between the first optically denser medium layer 16 and cover-plate glass 15.Table 2 shows
Pair of the reflectivity at interface between the reflectivity and glass and air at interface between the first optically denser medium layer of one kind and glass is gone out
Than table, the present embodiment carries out anti-the glass for being coated with the first optically denser medium layer, and the glass being exposed in air layer respectively
The measurement of rate is penetrated,It indicates the film forming thickness of the first optically denser medium layer, is also shown on glass in table 2 and forms first
The film-forming temperature of optically denser medium layer measures the reflection for the light for being a length of 550nm of spectrum medium wave in Tr (550nm) expression table 2
Rate, comparison glass surface reflectivity influenced using the aerial glass of exposure as the first optically denser medium layer of measurement in table 2
Example ref can be respectively from the glass of the side close to glass when measuring the reflectivity at interface between the first optically denser medium layer and glass
The measurement that the film surface of glass face and the side of close first optically denser medium layer carries out reflectivity respectively is surveyed from glass surface as shown in Table 2
The reflectivity of amount and the reflectivity measured from film surface are roughly the same.Reference table 2, interface between the first optically denser medium layer and glass
Reflectivity, hence it is evident that higher than the reflectivity at interface between cover-plate glass and air layer, illustratively, the first optically denser medium layer and glass
Between the light reflectance at interface maintain 12% or so, and the light reflectance at interface is essentially between glass and air layer
8% or so.It can be seen that the first optically denser medium layer can be improved the light reflectance of glass surface.
Between 2: the first optically denser medium layer of table and glass between the reflectivity and glass and air at interface interface reflectivity
Contrast table
Optionally, with continued reference to Fig. 2, the diameter range of collimating aperture 17 is 4 μm~6 μm, the collimating aperture 17 of the diameter range
Stray light can be effectively filtered out, so that the fingerprint image that photo cell 111 obtains is more clear, increases the accurate of fingerprint recognition
Property.
Optionally, the thickness range of the first optically denser medium layer 16 isFirst optically denser medium layer 16
With a thickness ofWhen, the thickness of the first optically denser medium layer 16 is greater than or equal toSo that close Jie of the first light
Matter layer 16 can provide enough reflection paths for light, and the thickness of the first optically denser medium layer 16 is less than or equal toPrevent the blocked up transit dose to reduce the light of the first optically denser medium layer 16 of the first optically denser medium layer 16.Certainly,
The thickness range of one optically denser medium layer 16 is not limited thereto.
It optionally, is the structural schematic diagram of another display panel provided in an embodiment of the present invention, display with reference to Fig. 3, Fig. 3
Panel can also include: the second optically denser medium layer 18；Second optically denser medium layer 18 is set to the first optically denser medium layer 16 far from color
The side of ilm substrate 12, and the second optically denser medium layer 18 covers the first optically denser medium layer 16；The folding of second optically denser medium layer 18
Rate n2 is penetrated more than or equal to 1.3, and is less than or equal to 1.5.
Increase the second optically denser medium layer 18 of layer of transparent, this reality close to the side of finger tip 2 in the first optically denser medium layer 16
The refractive index n2 for applying the second optically denser medium layer 18 in example is greater than or equal to 1.3, and is less than or equal to 1.5, then the second optically denser medium
The refractive index n2 of layer 18 is approximately equal with the refractive index n_s of finger tip 2.Second optically denser medium layer 18 covers the first optically denser medium layer
16, then at the ridge position of fingerprint, it is additionally provided with the second optically denser medium layer 18 between finger tip 2 and the first optically denser medium layer 16, refers to
At the paddy position of line, the second optically denser medium layer 18 is additionally provided between air layer 3 and the first optically denser medium layer 16.As shown in figure 3,
At the ridge position of fingerprint, because the second optically denser medium layer 18 is identical with the refractive index of finger tip 2, then 18 He of the second optically denser medium layer
The reflectivity Ra ≈ 0% at the interface between finger tip 2, and in the prior art, the reflection at the interface between cover-plate glass 15 and finger tip 2
Rate is Rd=0.12%, then the light that photo cell 111 is finally reflexed at the ridge position of fingerprint forms darker dark line, so that
The luminance difference of the light of the paddy position of fingerprint and ridge position reflection is larger, promoted finally formed fingerprint image paddy position and
The contrast of ridge position increases the signal-to-noise ratio of fingerprint recognition, improves the precision of fingerprint recognition.
Optionally, the material of the second optically denser medium layer 18 can be fluororesin, magnesium fluoride, calcirm-fluoride or quartz.Above-mentioned material
Material is transparent, refractive index and the approximate substance of finger tip 2, and illustratively, the refractive index n2 of fluororesin is 1.34~1.42, fluorine
The refractive index n2 for changing magnesium is 1.38, and the refractive index n2 of calcirm-fluoride is about 1.434, and quartzy refractive index is about 1.46.Above-mentioned material
Refractive index it is close with 1.4, effectively increase the signal-to-noise ratio of fingerprint recognition signal.
Optionally, quasi- as shown in figure 4, Fig. 4 is the structural schematic diagram of another display panel provided in an embodiment of the present invention
Straight hole 17 may include at least one layer of light shield layer 123；Color membrane substrates 12 include glass substrate 121, and light shield layer 123 is set to glass
Side of the substrate 121 far from the first optically denser medium layer 16；Display panel can also include: at least one layer of third optically denser medium layer
19；Third optically denser medium layer 19 is set between the glass substrate 121 of color membrane substrates 12 and light shield layer 123；Third optically denser medium
The refractive index of layer 19 is greater than 1.5.
Collimating aperture 17 can be obtained by least one layer of 123 etching through hole of light shield layer, as shown in Figures 2 to 4, the present embodiment
Illustrated by taking three layers of light shield layer 123 as an example in attached drawing, the collimating aperture 17 of the present embodiment can also be by one layer of 123 shape of light shield layer
At, or include the light shield layer 123 greater than three layers.Light shield layer 123 may be disposed in array substrate 11, also can be set in color film
On substrate 12 or part light shield layer 123 is set in array substrate 11, and remainder light shield layer 123 is set to color membrane substrates
On 12, the present embodiment Fig. 2 is illustrated by taking the display panel that light shield layer 123 is set on color membrane substrates 12 as an example into Fig. 4
Illustrate, but the present embodiment to the specific setting position of light shield layer 123 without limiting.But generally, the needs of collimating aperture 17 are set
The glass substrate 121 in color membrane substrates 12 is set far from the side of the first optically denser medium layer 16, for conducting to reflection light.
In the present embodiment, between the glass substrate 121 and light shield layer 123 of color membrane substrates 12, it is additionally provided at least one layer
The refractive index n3 of third optically denser medium layer 19, third optically denser medium layer 19 is greater than 1.5, the folding of other stacked structures of display panel
The rate of penetrating is respectively less than 1.5, then is light by light when light is incident to third optically denser medium layer 19 by the stacked structure of display panel
The case where dredging medium incident to optically denser medium, then refraction angle is greater than incidence angle, realizes the path convergence of light, as shown in figure 4,
Third optically denser medium layer 19 is used for before light reflexes to collimating aperture 17, is restrained to the path of the light of reflection, is increased
Into the luminous flux of collimating aperture 17, the clarity for the fingerprint image that photo cell 111 obtains is improved.
Optionally, the refractive index n3 of third optically denser medium layer 19 is greater than 1.5, and the material of third optically denser medium layer 19 equally may be used
For tin indium oxide, silica, silicon nitride or titanium oxide etc..
Optionally, with continued reference to 4, every layer of third optically denser medium layer 19 may include and the one-to-one third of collimating aperture 17
Optically denser medium block 191；Corresponding collimating aperture 17 is completely covered in the upright projection of third optically denser medium block 191 on a display panel,
The light that third optically denser medium layer 19 is aligned around straight hole 17 is restrained, and is made it into collimating aperture 17, is increased
The luminous flux of collimating aperture 17.As shown in figure 4, planarization layer 122 can be set between adjacent third optically denser medium block 191, put down
122 pairs of display panel of smoothization layer have certain supporting role.
Optionally, as shown in figure 5, Fig. 5 is the structural schematic diagram of another display panel provided in an embodiment of the present invention, often
The upright projection of layer third optically denser medium layer 19 on a display panel covers all collimating apertures 17.The third light of flood setting is close
Dielectric layer 19 can further enhance the path convergence effect of light, increase the luminous flux of collimating aperture 17.
Optionally, with continued reference to Fig. 4 and Fig. 5, display panel includes multilayer third optically denser medium layer 19；By color membrane substrates
12 are directed toward on the direction of array substrate 11, and the refractive index of each third optically denser medium layer 19 successively increases.Refer to by color membrane substrates 12
To on the direction of array substrate 11, i.e., on the reflection path direction of light, the refractive index n3 of each third optically denser medium layer 19 is gradually
Increase.Illustratively, as shown in Figure 4 and Figure 5, by taking three layers of third optically denser medium layer 19 as an example, the folding of third optically denser medium layer m3
The refractive index that rate is greater than third optically denser medium layer m2 is penetrated, the refractive index of third optically denser medium layer m2 is greater than third optically denser medium layer m1
Refractive index, then reflection light successively passes through third optically denser medium layer m1, third optically denser medium layer m2 and third optically denser medium layer
The path of m3, light are gradually restrained, and the collimation for being incident to collimating aperture 17 is improved, and increase vertical incidence to collimating aperture 17
Luminous flux improves fingerprint recognition precision.
The embodiment of the present invention also provides a kind of display device.Fig. 6 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram, as shown in fig. 6, display device provided in an embodiment of the present invention 2 includes showing described in any embodiment of that present invention
Show panel 1.Display device 2 can be mobile phone as shown in Figure 6, or computer, television set, intelligent wearable device etc.,
The present embodiment is not particularly limited this.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (11)
1. a kind of display panel characterized by comprising color membrane substrates；
Array substrate is oppositely arranged with the color membrane substrates, and the array substrate includes multiple photo cells；
Collimating aperture, the collimating aperture are arranged in a one-to-one correspondence with the photo cell, so that showing the finger of side by the display panel
The light of end reflection is incident to the corresponding photo cell by the collimating aperture；
First optically denser medium layer is set to side of the color membrane substrates far from the array substrate；First optically denser medium
Layer include and the one-to-one first optically denser medium block of the collimating aperture；The first optically denser medium block is on said display panel
Upright projection the corresponding collimating aperture is completely covered；
The refractive index of the first optically denser medium layer is greater than 1.5.
2. display panel according to claim 1, which is characterized in that
The material of the first optically denser medium layer is tin indium oxide, silica, silicon nitride or titanium oxide.
3. display panel according to claim 1, which is characterized in that further include:
First polaroid is set to the first optically denser medium layer close to the side of the color membrane substrates；
Cover-plate glass is set between the first optically denser medium layer and first polaroid.
4. display panel according to claim 1, which is characterized in that
The diameter range of the collimating aperture is 4 μm~6 μm.
5. display panel according to claim 1, which is characterized in that further include: the second optically denser medium layer；
The second optically denser medium layer is set to the first side of the optically denser medium layer far from the color membrane substrates, and described second
Optically denser medium layer covers the first optically denser medium layer；
The refractive index of the second optically denser medium layer is greater than or equal to 1.3, and is less than or equal to 1.5.
6. display panel according to claim 5, which is characterized in that
The material of the second optically denser medium layer is fluororesin, magnesium fluoride, calcirm-fluoride or quartz.
7. display panel according to claim 1, which is characterized in that the collimating aperture includes at least one layer of light shield layer；Institute
Stating color membrane substrates includes glass substrate, and the light shield layer is set to one of the glass substrate far from the first optically denser medium layer
Side；
The display panel further include: at least one layer of third optically denser medium layer；The third optically denser medium layer is set to the coloured silk
Between the glass substrate of ilm substrate and the light shield layer；The refractive index of the third optically denser medium layer is greater than 1.5.
8. display panel according to claim 7, which is characterized in that every layer of third optically denser medium layer is in the display
Upright projection on panel covers all collimating apertures.
9. display panel according to claim 7, which is characterized in that every layer of third optically denser medium layer include with it is described
The one-to-one third optically denser medium block of collimating aperture；
The corresponding collimating aperture is completely covered in the upright projection of the third optically denser medium block on said display panel.
10. display panel according to claim 7, which is characterized in that the display panel includes close Jie of multilayer third light
Matter layer；
It is being directed toward on the direction of the array substrate by the color membrane substrates, the refractive index of each third optically denser medium layer is layer-by-layer
Increase.
11. a kind of display device, which is characterized in that including display panel of any of claims 1-10.
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| CN201910703623.8A CN110376782B (en) | 2019-07-31 | 2019-07-31 | Display panel and display device |
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| CN110376782B (en) | 2022-05-10 |
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