The content of the invention
The present invention solves the problems, such as to be to provide a kind of display unit and display screen, while screen display is realized, alsoIt can realize the function of Fingerprint recognition, and reduce cost of manufacture.
To solve the above problems, the present invention provides a kind of display unit, including：RGB backboards, for sending colourama, instituteStating the face that RGB backboards are used to send colourama has three luminescent materials being arranged in order to be positive, on the RGB backboards frontLayer, three luminous material layers are respectively used to send one kind in red light, green light and blue light；With the RGB backboardsThe upper cover plate that front is oppositely arranged, the upper cover plate are used to pass through the colourama and are projected to finger, and formation carries fingerprintThe reflected light of information；Optical fingerprint sensor on the RGB backboards front, it is described with finger print information for receivingReflected light is to obtain fingerprint image；Hollow and annular protection well on the RGB backboards front, the protection well is around describedOptical fingerprint sensor, for stopping that the colourama that the RGB backboards are sent is projected to the optical fingerprint sensor.
Optionally, the thickness of the protection well is equal to the distance between the RGB backboards and the upper cover plate.
Optionally, the thickness of the protection well is less than the distance between the RGB backboards and the upper cover plate.
Optionally, the protection well is hollow and annular column, the ratio of the thickness of the protection well and the diameter of the protection wellIt is worth for aspect ratio, and the aspect ratio is 0.1~15.
Optionally, the display unit further includes：Supporting structure between the RGB backboards and the upper cover plate,And the thickness of the supporting structure is equal to the distance between the RGB backboards and the upper cover plate.
Optionally, the protection well is laminated construction, including transparent material layer and positioned at the transparent material layer side wallOn light-shielding material layers, wherein, the transparent material layer is around the optical fingerprint sensor.
Optionally, the upper cover plate is euphotic cover plate.
Optionally, the display unit is arranged on display screen, is had on the display screen in the multiple of array arrangementDisplay unit；Three luminous material layers are in strip and along going to being set up in parallel.
Optionally, along row on direction, three luminous material layers put in order for：Red illuminating material layer,Green luminescent material layer, blue emitting material layer；Wherein, the red illuminating material layer is used to send red light, the greenLuminous material layer is used to send green light, and the blue emitting material layer is used to send blue light.
Optionally, three luminous material layers upward width of being expert at is equal.
Optionally, the RGB backboards front includes light-emitting zone, and three luminous material layers are located at the light-emitting zoneIt is interior, and the light-emitting zone is being preset emission width parallel to upward width is arranged；Wherein, described three in the light-emitting zoneA luminous material layer row to end there is gap, and the optical fingerprint sensor is arranged on the gap.
Optionally, three luminous material layers row to an end there is the gap；And three hairsOptical material layer row to another end flushed with the light-emitting zone border.
Optionally, any one luminous material layer is less than the preset emission width in the upward width of row, described to shineIn region the luminous material layer row to end there is the gap.
Optionally, the red illuminating material layer is less than the preset emission width, the optics in the upward width of rowFingerprint sensor be arranged on the red illuminating material layer row to end；Alternatively, the green luminescent material layer is arrangingUpward width is less than the preset emission width, and the optical fingerprint sensor is arranged on the green luminescent material layer and is arrangingTo end.
Optionally, two luminous material layers of arbitrary neighborhood are less than the preset emission width in the upward width of row, describedIn light-emitting zone described two adjacent luminous material layers row to end there is the gap.
Optionally, the red illuminating material layer and green luminescent material layer are less than described default in the upward width of rowLuminous width, the optical fingerprint sensor be arranged on the red illuminating material layer and green luminescent material layer row toEnd.
Optionally, the green luminescent material layer and blue emitting material layer are less than described default in the upward width of rowLuminous width, the optical fingerprint sensor be arranged on the green luminescent material layer and blue emitting material layer row toEnd.
Optionally, three luminous material layers are less than the preset emission width in the upward width of row, described to shineIn region three luminous material layers row to end there is the gap.
Optionally, the RGB backboards are OLED RGB backboards.
Optionally, the RGB backboards are micro LED backplanes.
The present invention also provides a kind of display screen, including：Including some above-mentioned display units.
Optionally, several described display units are arranged in array.
Optionally, the multiple display unit shares a protection well；The same protection well is around the multiple aobviousShow the optical fingerprint sensor of unit.
Optionally, several described display units are located at least one row of the display screen full screen；On one rowPart or all of display unit share a protection well.
Compared with prior art, technical scheme has the following advantages：
In the technical solution of display unit provided by the invention, including RGB backboards, for sending colourama, the RGB back ofs the bodyThere are three luminous material layers being arranged in order, three luminous material layers are respectively used to send red light, green on plate frontOne kind in coloured light and blue light；The upper cover plate being oppositely arranged with the RGB backboards front, the upper cover plate are used to make the coloured silkColoured light is passed through and is projected on finger, forms the reflected light with finger print information；Optics on the RGB backboards front refers toLine sensor, for receiving the reflected light with finger print information to obtain fingerprint image；On the RGB backboards frontHollow and annular protection well, the protection well is around the optical fingerprint sensor, the coloured silk sent for stopping the RGB backboardsColoured light is projected in the optical fingerprint sensor.Three luminous material layers are sent in red light, green light and blue lightOne kind, it is possible to achieve the function that screen color is shown, and the optical fingerprint sensor is integrated in the display unit,It can also realize the function of identification fingerprint image.
Embodiment
From background technology, optical fingerprint sensor is placed in the side in display screen by the prior art it is urgent to provide a kind ofMethod, had not only met that the requirement of fingerprint can be gathered with full screen, but also can reduce cost of manufacture.
To solve the above problems, the present invention provides a kind of display unit, including：
RGB backboards, for sending colourama, the face that the RGB backboards are used to send colourama is front, the RGB back ofs the bodyThere are three luminous material layers being arranged in order, three luminous material layers are respectively used to send red light, green on plate frontOne kind in coloured light and blue light；The upper cover plate being oppositely arranged with the RGB backboards front, the upper cover plate are used to make the coloured silkColoured light passes through and is projected to finger, forms the reflected light with finger print information；Optical finger print on the RGB backboards frontSensor, for receiving the reflected light with finger print information to obtain fingerprint image；On the RGB backboards frontHollow and annular protects well, and the protection well is around the optical fingerprint sensor, the colour sent for stopping the RGB backboardsLight projection is to the optical fingerprint sensor.
The present invention can also realize the function of identification fingerprint image while the function of screen display is realized.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present inventionSpecific embodiment be described in detail.
Fig. 1 to Fig. 6 shows the structure diagram for the display unit that one embodiment of the invention provides, wherein, Fig. 1 is this hairThe cross-sectional view for the display unit that a bright embodiment provides, Fig. 2 to Fig. 6 are a variety of layout structures of RGB backboards in Fig. 1Schematic diagram.
Referring to figs. 1 to Fig. 6, the display unit includes：
RGB backboards 101, for sending colourama, the face that the RGB backboards are used to send colourama is front, the RGBThere are three luminous material layers being arranged in order, three luminous material layers are respectively used to send red on 101 front of backboardOne kind in light, green light and blue light；
Opposite upper cover plate 104, the upper cover plate 104 are used to pass through the colourama with the front of RGB backboards 101And finger is projected to, form the reflected light with finger print information；
Optical fingerprint sensor 102 on 101 front of RGB backboards, described finger print information is carried for receivingReflected light to obtain fingerprint image；
Hollow and annular protection well 103 on 101 front of RGB backboards, the protection well 103 is around the opticsFingerprint sensor 102, for stopping that the colourama that the RGB backboards 101 are sent is projected to the optical fingerprint sensor 102.
Display unit provided in this embodiment is described in detail below with reference to attached drawing.
The RGB backboards 101 are used to send colourama, and the colourama includes red light, green light and blue light.InstituteThree luminous material layers for having on 101 front of RGB backboards and being arranged in order are stated, three luminous material layers are respectively used to sendOne kind in red light, green light and blue light, and the color of light that three luminous material layers are sent is different.
Correspondingly, three luminous material layers be respectively red illuminating material layer 11, green luminescent material layer 12 andBlue emitting material layer 13, wherein, the light that the red illuminating material layer 11 is sent is red light, the green luminescent material layer12 light sent are green light, and the light that the blue emitting material layer 13 is sent is blue light.
In the present embodiment, the RGB backboards 101 are OLED (Organic Light-Emitting Diode) RGB backboards.In other embodiments, the RGB backboards can also be micro LED RGB backboards.
In the present embodiment, the display unit is arranged on display screen, is had on the display screen in array arrangementMultiple display units；And three luminous material layers are in strip and along going to being set up in parallel.Specifically, the emitting red lightMaterial layer 11, green luminescent material layer 12 and blue emitting material layer 13 are in strip and along going to being set up in parallel.Along rowTo on direction, three luminous material layers put in order for：Red illuminating material layer 11, green luminescent material layer 12 andBlue emitting material layer 13.Wherein, three luminous material layers upward width of being expert at is equal, that is to say, that described redColor luminous material layer 11, green luminescent material layer 12 and blue emitting material layer 13 upward width of being expert at are equal.
It should be noted that in other embodiments, according to the difference of the requirement of the pixel to display screen, the red hairOptical material layer, green luminescent material layer and blue emitting material layer are expert at upward width can not also be same.
The RGB backboards 101 include light-emitting zone I, and three luminous material layers are located in the light-emitting zone I, andThe light-emitting zone I is being preset emission width W parallel to upward width is arranged.Wherein, described three in the light-emitting zone ILuminous material layer row to end there is gap (not indicating), and the optical fingerprint sensor 102 is arranged on the skyAt gap.
In the present embodiment, the quantity of the optical fingerprint sensor 102 in same display unit is 1, then described three shineMaterial layer row to an end there is the gap, so that the optical fingerprint sensor 102 is arranged at the skyAt gap, and three luminous material layers row to another end flushed with the light-emitting zone I borders.
It should be noted that in other embodiments, three luminous material layers row to an end haveThe gap, three luminous material layers row to the other end at can also have gap, in the light-emitting zoneTwo ends set optical fingerprint sensor respectively.
Specifically, any one luminous material layer row to width be less than the preset emission width W, the luminous zoneIn the I of domain the luminous material layer row to end there is the gap.
With reference to figure 2, Fig. 2 is the layout structure schematic diagram of the first RGB backboard in the embodiment of the present invention, the emitting red lightMaterial layer 11 is less than the preset emission width W in the upward width of row, and the optical fingerprint sensor 102 is arranged on described redColor luminous material layer 11 row to end.
Specifically, in the light-emitting zone I red illuminating material layer 11 row to end there is gap, it is describedOptical fingerprint sensor 102 is arranged on the gap.It can also be expected that compared with traditional RGB backboard layout structures, this realityApply the segment space position that optical fingerprint sensor 102 in example occupies red illuminating material layer 11.
Since perception of the human eye for red light is more sensitive, even if red illuminating material layer 11 is arranging upward widthDegree is less than other luminous material layers and is arranging upward width, to user to the display unit color perceptually caused by notGood influence is small.
With reference to figure 3, Fig. 3 is the layout structure schematic diagram of second of RGB backboard in the embodiment of the present invention, the green emittingMaterial layer 12 row to width be less than the preset emission width W, the optical fingerprint sensor is arranged on the green and sends outOptical material layer 12 row to end.
Specifically, in the light-emitting zone I green luminescent material layer 12 row to end there is gap, it is describedOptical fingerprint sensor 102 is arranged on the gap.It can also be expected that compared with traditional RGB backboard layout structures, this realityApply the segment space position that the optical fingerprint sensor 102 in example occupies green luminescent material layer 12.
Since human eye is high for the sensitivity of green light, though the green luminescent material layer 12 row to widthDegree be less than other luminous material layers row to width, to user to the display unit color perceptually caused by it is badInfluence small.
Can also be that two luminous material layers of arbitrary neighborhood are less than the preset emission width W, institute in the upward width of rowState described two adjacent luminous material layers in light-emitting zone I row to end there is the gap.
With reference to figure 4, Fig. 4 is the layout structure schematic diagram of the third RGB backboard in the embodiment of the present invention, the emitting red lightMaterial layer 11 and green luminescent material layer 12 are less than the preset emission width W, the optical finger print in the upward width of rowSensor 102 be arranged on the red illuminating material layer 11 and green luminescent material layer 12 row to end.
Specifically, in the light-emitting zone I red illuminating material layer 11 and green luminescent material layer 12 row to endThere is gap, the optical fingerprint sensor 102 is arranged on the gap at portion.It can also be expected that with traditional RGB backboardsLayout structure is compared, and the optical fingerprint sensor in the present embodiment occupies red illuminating material layer 11 and green luminescent materialThe segment space position of layer 12.
It should be noted that Fig. 1 is the cross-section structure of the third corresponding display unit of RGB backboards in the embodiment of the present inventionSchematic diagram.
With reference to figure 5, the layout structure schematic diagram of the 4th kind of RGB backboard, the green emitting material during Fig. 5 is implemented for the present inventionThe bed of material 12 and blue emitting material layer 13 are less than the preset emission width W in the upward width of row, and the optical finger print passesSensor 102 be arranged on the green luminescent material layer 12 and blue emitting material layer 13 row to end.
Specifically, in the light-emitting zone I green luminescent material layer 12 and blue emitting material layer 13 row to endThere is gap, the optical fingerprint sensor 102 is arranged on the gap at portion.It can also be expected that with traditional RGB backboardsLayout structure is compared, and the optical fingerprint sensor 102 in the present embodiment occupies green luminescent material layer 12 and blue-light-emittingThe segment space position of material layer 13.
Three luminous material layers are less than the preset emission width W arranging upward width, in the light-emitting zone IThree luminous material layers row to end there is the gap.
With reference to figure 6, Fig. 6 is the layout structure schematic diagram of the 5th kind of RGB backboard in the embodiment of the present invention, the emitting red lightMaterial layer 11, green luminescent material layer 12 and blue emitting material layer 13 are wide less than the preset emission in the upward width of rowW is spent, the optical fingerprint sensor 102 is arranged on the red illuminating material layer 11, green luminescent material layer 1 and blueness hairOptical material layer 13 row to end.
Specifically, in the light-emitting zone I three luminous material layers row to end there is gap, the lightLearn fingerprint sensor 102 and be arranged on the gap.It can also be expected that compared with traditional RGB backboard layout structures, this implementationOptical fingerprint sensor 102 in example occupies red illuminating material layer 11, green luminescent material layer 12 and blue-light-emitting materialThe segment space position of the bed of material 13.
The upper cover plate 104 provides protective effect for the RGB backboards 101, also, the upper cover plate 104 is also fingerContact interface is provided.In the present embodiment, the upper cover plate 104 is euphotic cover plate.
The protection well 103 is used to prevent the colourama of 102 side of optical fingerprint sensor to be projected to the opticsOn fingerprint sensor 102, so as to prevent the optical fingerprint sensor 102 from producing photosensitive saturation, ensure that the optical finger print passesSensor 102 has the ability of identification fingerprint image.
Specifically, due to one or adjacent two in the optical fingerprint sensor 102 and three luminous material layersIt is a or three are adjacent, if without the barrier effect of the protection well 103, positioned at 102 side of optical fingerprint sensorThe light that sends of luminous material layer be directly projected on the optical fingerprint sensor 102, be easy to cause the optical finger print and pass102 photosensitive saturation of sensor.The protection well 103 can play the light that the luminous material layer of stop edge is sent, and avoid the lightLine is projected on the optical fingerprint sensor 102, so as to prevent the optical fingerprint sensor 102 from photosensitive saturation occurs.
In addition, when the display unit is applied on display screen, the reflected light projects with finger print information to the guarantorIn guide-well 103, reached via the protection well 103 on the optical fingerprint sensor 102 so that the optical fingerprint sensor102 pairs of acceptable reflection angular with finger print information, which have, to be required, and is passed for example, can identify positioned at the optical finger printFingerprint image directly over sensor 102, and nonrecognition is located at the fingerprint image in other regions.Shown using the display screen as mobile phoneExemplified by screen, there is the first application icon and the second application icon, and the optics in the display unit refers on the display screenLine sensor 102 can be used for the first application program of unlock；When finger is located on first application icon, the optical finger printSensor 102 identifies fingerprint image so as to unlock the first application program；It is described when finger is located on second application iconOptical fingerprint sensor 102 will not then unlock the first application program.
The protection well 103 is laminated construction, including transparent material layer and on the transparent material layer side wallLight-shielding material layers, wherein, the transparent material layer is around the optical fingerprint sensor 102.The light-shielding material layers can hinderThe light in addition to the reflected light with finger print information is kept off, stops that the light is projected on the optical fingerprint sensor 102,The light is avoided to cause harmful effect to the optical fingerprint sensor 102.
In the present embodiment, the thickness of the protection well 103 is equal between the RGB backboards 101 and the upper cover plate 104Distance.It is described protection well 103 there are opposite both ends, one end is in contact with 101 front of RGB backboards, the other end with it is describedUpper cover plate 104 is in contact.Therefore, the protection well 103 not only acts as the work for preventing 102 photosensitive saturation of optical fingerprint sensorWith the support column between RGB backboards 101 and the upper cover plate 104 can also be played the role of, for the RGB backboards 101 and instituteState and provide support between upper cover plate 104.
It should be noted that in other embodiments, with reference to figure 7, Fig. 7 is the display list that another embodiment of the present invention providesThe cross-sectional view of member, the thickness of the protection well 103 are less than between the RGB backboards 101 and the upper cover plate 104Distance.The protection well 103 is hollow and annular column, between the diameter D of the thickness H of the protection well 103 and the protection well 103Ratio be aspect ratio.The aspect ratio is unsuitable too small, also should not be too large.If the aspect ratio is too small, the protection well103 stop that the ability of interference light is weak, in addition to the reflected light with finger print information, also have other light and are projected to the lightLearn on fingerprint sensor 102 (with reference to figure 4), influence the ability that the optical fingerprint sensor 102 identifies fingerprint image.
For this reason, when the thickness of the protection well 103 is less than the distance between the RGB backboards 101 and the upper cover plate 104When, the protection well 103 is hollow and annular column, and the aspect ratio of the protection well 103 is 0.1~15.
With reference to figure 7, when the thickness of the protection well 203 is less than between the RGB backboards 201 and the upper cover plate 204Apart from when, the display unit further includes：Supporting structure 209 between the RGB backboards 201 and the upper cover plate 204,And the thickness of the supporting structure 209 is equal to the distance between the RGB backboards 201 and the upper cover plate 204.The support knotStructure 209 plays the role of the support RGB backboards 201 and the upper cover plate 204；The material of the supporting structure 209 can beLight transmissive material, the material of the supporting structure 209 can also be light screening material.
In display unit provided in an embodiment of the present invention, it can either realize that colourama is shown, identification fingerprint can also be providedThe function of image.Specifically, with reference to reference to figure 1 and Fig. 2, display unit realization display and the method for fingerprint recognition are utilizedIncluding：
Using the display unit obtaining unit pixel, the unit pixel include red sub-pixel, blue subpixels withAnd green sub-pixels, wherein, the red sub-pixel is directly provided by the red illuminating material layer 11, the green sub-pixelsDirectly provided by the green luminescent material layer 12, the blue subpixels are directly provided by the blue emitting material layer 13；
Detection light is produced using the display unit, after the detection light is projected on the finger on display screen, warpReflected light with finger print information, and the sky that the reflected light is surrounded via the protection well 103 are reflected to form by the fingerChamber is projected on the optical fingerprint sensor 102, to obtain the fingerprint image of finger.
Wherein, the detection light can include the red that the positive red illuminating material layer 11 of the RGB backboards 101 is sentLight, the red light are projected on the finger on display screen via the upper cover plate 104, and band is reflected to form through the fingerThere is the reflected light of finger print information；The reflected light is projected to the optical finger print via the cavity that the protection well 103 surrounds and passesOn sensor 102, to obtain the fingerprint image of finger.
The detection light can also include the green light that the positive green luminescent material layer 12 of the RGB backboards 101 is sent,The green light is projected on the finger on display screen via the upper cover plate 104, and the finger is reflected to form with fingerThe reflected light of line information；The reflected light is projected to the optical fingerprint sensor via the cavity that the protection well 103 surroundsOn 102, to obtain the fingerprint image of finger.
The detection light can also include the blue light that the positive blue emitting material layer 13 of the RGB backboards 101 is sent,The blue light is projected on the finger on display screen via the upper cover plate 104, and the finger is reflected to form with fingerThe reflected light of line information；The reflected light is projected to the optical fingerprint sensor via the cavity that the protection well 103 surroundsOn 102, to obtain the fingerprint image of finger.
It should also be noted that, it can reasonably select what the optical fingerprint sensor 102 received to carry finger print informationReflected light color, with determine red light, green light or blue light in one or more colors light formed transmitting lightAs detection light.For example, when the color that the optical fingerprint sensor 102 receives the reflected light with finger print information is red,Then red light is detection light；When the color that the optical fingerprint sensor 102 receives the reflected light with finger print information is blueness,Then blue light is detection light.
The protection well 103 can both play the role of preventing 102 photosensitive saturation of optical fingerprint sensor, can also be by bandThe reflected light for having finger print information is smoothly imported on the optical fingerprint sensor 102.
The present invention also provides a kind of display screen, including several display units described above so that display screen is being realizedThe function of fingerprint recognition, and the low manufacture cost of display screen are also realized while screen display.
Specifically, several described display units are arranged in array, so as to meet the needs of full screen gathers fingerprint.
It should be noted that in other embodiments, when display screen only needs subregion to realize fingerprint identification function,Can also only have subregion in the display screen includes above-mentioned display unit.
The protection well in several display units in the display screen can be separate, that is to say, that each is aobviousShow that unit has an independent protection well.Multiple display units in the display screen can also share a protectionWell, the protection well is across the multiple display unit, optical finger print of the same protection well around the multiple display unitSensor.It should be noted that in view of the protection well and RGB backboard manufacture craft difficulty, same protection well across2 display units in same row, 2 display units share a protection well, and same protection well is aobvious around described 2Show the optical fingerprint sensor of unit.
It should also be noted that, when several described display units are located at least one row of the display screen full screenWhen, the described one part or all of display unit arranged can share a protection well.
Since the optical fingerprint sensor is integrated on RGB backboards, the optical fingerprint sensor is to the display screenScreen accounting influence it is small so that the display screen has a larger screen accounting, improves user experience.In addition, the present invention is carriedThe display unit application of confession on a display screen, can also be realized and carry out unlocked by fingerprint to single application program.
In addition, using the OLED self-luminous principles of RGB backboards, solve the display that optical fingerprint sensor needs backlight,Shine in itself using OLED pixel and be used as detection light, obtain fingerprint image.
Meanwhile the optical fingerprint sensor is set not reduce the pixel that display unit is formed on the RGB backboardsDensity (PPI, Pixels Per Inch), and will not because the optical fingerprint sensor is set and caused by the thickness of display screen increaseAdd.
Also, optical fingerprint sensor is set in the display screen so that the security of application increases substantially.With handExemplified by machine, even if after mobile phone is unlocked by people, due to needing fingerprint identification using the opening of itself, and can set using unlock fingerprintIt is different from mobile phone unlock fingerprint, it might even be possible to the confirmation of multiple fingers is set, therefore application is difficult to be opened, so as to improve handMachine safety in utilization.
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from thisIn the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim instituteSubject to the scope of restriction.