CN107247925A

CN107247925A - Display module

Info

Publication number: CN107247925A
Application number: CN201710357976.8A
Authority: CN
Inventors: 凌严; 朱虹
Original assignee: Shanghai Luoji Technology Co Ltd
Current assignee: Shanghai Oxi Technology Co Ltd; Shanghai Luoji Technology Co Ltd
Priority date: 2017-05-19
Filing date: 2017-05-19
Publication date: 2017-10-13

Abstract

A kind of display module, including：Protective layer；Light-emitting display panel, the light-emitting display panel is located at below the protective layer；There is at least local of the light-emitting display panel optical finger print to recognize structure, can realize optical finger print identification function；The protective layer lower surface has upwardly recessed groove, and the groove is located at the oblique upper of the light-emitting display panel；The display module also includes：Point-like backlight, the point-like backlight is at least partially disposed in the groove, and the light that the point-like backlight is sent enters the protective layer from least one of which surface of the groove.The display module integrated optics fingerprint identification function.

Description

Display module

Technical field

Field, more particularly to a kind of display module are recognized the present invention relates to optical finger print.

Background technology

Fingerprint imaging identification technology, is the fingerprint image that human body is collected by fingerprint sensor, then with system Existing fingerprint imaging information is compared, and whether carrys out correct judgment, and then realize the technology of identification.The side used due to it Just property, and somatic fingerprint uniqueness, fingerprint identification technology has been widely used in every field.Such as public security bureau, customs Etc. field of safety check, consumer product area such as the gate control system of building, and PC and mobile phone etc..

The implementation of fingerprint imaging identification technology has the multiple technologies such as optical imagery, capacitance imaging, ultrasonic imaging.Relatively For, optical finger print imaging technique, its imaging effect is relatively preferable, and equipment cost is relatively low.

In the prior art, the existing integrating fingerprint identification function in display module, but it is typically to use capacitance type fingerprint Recognition principle.More contents about integrating fingerprint identification function in display module refer to Publication No. CN106024833A's Chinese invention patent application.

The display module structure of existing integrating fingerprint identification function has much room for improvement, and performance has much room for improvement.

The content of the invention

The present invention solve the problem of be to provide a kind of display module, be better achieved fingerprint identification function is integrated in it is aobvious Show in module, so as to while display, obtain clearly fingerprint image.

To solve the above problems, the invention provides a kind of display module, including：Protective layer；Light-emitting display panel, institute Light-emitting display panel is stated below the protective layer；There is at least local of the light-emitting display panel optical finger print to know Other structure, can realize optical finger print identification function；The protective layer lower surface has upwardly recessed groove, the groove position In the oblique upper of the light-emitting display panel；The display module also includes：Point-like backlight, the point-like backlight is at least Part is located in the groove, and the light that the point-like backlight is sent enters institute from least one of which surface of the groove State protective layer.

Optionally, the light-emitting display panel includes first substrate, second substrate and first substrate and second substrate Between self-luminescence circuit layer；The first substrate is transparent substrates, and the first substrate is located above the second substrate；Institute Stating self-luminescence circuit layer includes viewing area, and the viewing area includes multiple display pixel cells；The viewing area include one or The multiple optical finger print sensing areas of person；In the optical finger print sensing area, per m × n in a display pixel cells, k described Each of display pixel cells has at least one optical finger print sensing element, m and any one integer that n is more than 1, and k is 1 to m × n any one integer.

Optionally, the optical finger print sensing element is located at the second substrate upper surface, or positioned at first base Plate lower surface.

Optionally, the light-emitting display panel includes first substrate, second substrate and first substrate and second substrate Between self-luminescence circuit layer；The first substrate is transparent substrates, and the first substrate is located above the second substrate；Institute Stating self-luminescence circuit layer includes viewing area, and the viewing area includes multiple display pixel cells；The first substrate upper table bread Include one or more optical finger print sensing area above the viewing area；There is the optical finger print sensing area optics to refer to Line sensing element.

Optionally, in the optical finger print sensing area, in the region per m × n above a display pixel cells, k Each top of the display pixel cells has at least one optical finger print sensing element, and m and n are any one of more than 1 Integer, k is 1 to m × n any one integer.

Optionally, the optical finger print sensing element is located at the oblique upper of the display pixel cells.

Optionally, it is first surface to the minimum surface of light-emitting display panel distance in the surface of the groove, The light that the backlight is sent enters the protective layer from the first surface.

Optionally, the top surface of the groove is parallel with the upper and lower surface of the protective layer；Described first Surface is plane, and the angle of the lower surface of the top surface and the protective layer of the first surface and the groove is all straight Angle.

Optionally, the top surface of the groove is parallel with the upper and lower surface of the protective layer；Described first Surface is plane, and the angle of the lower surface of the top surface and the protective layer of the first surface and the groove is all to be blunt Angle.

Optionally, the first surface is concave curved surface, and the top surface of the top edge of the concave curved surface and the groove connects Connect, the lower edge of the concave curved surface is connected with the lower surface of the protective layer.

Optionally, the first surface has anti-reflection film, and the light that the anti-reflection film can increase the backlight enters The ratio of the protective layer.

Optionally, in the upper surface of the protective layer, with the backlight just to part there is light shield layer；Or, institute Stating the top surface of groove has light shield layer；Or, the upper surface of the protective layer and the backlight just to part have Light shield layer, and the top surface of the groove also has light shield layer.

Optionally, there is thickening layer between the light-emitting display panel and the protective layer.

Optionally, the point-like backlight is a LED；Or, the point-like backlight is two or more LED, The groove is multiple, and a LED is located in a groove.

Optionally, the point-like backlight is two or more LED, and described two above LEDs are evenly distributed on same In the individual groove.

Optionally, the light-emitting display panel includes more than two indicative of local optical induction regions, a LED One indicative of local optical induction region of correspondence；The display module also includes touch-control structure, and the touch-control structure includes two Local touch area above, one local touch area of indicative of local optical induction region correspondence.

Optionally, the light-emitting display panel includes the indicative of local optical induction region of more than three, the LED number Less than the number of the indicative of local optical induction region；The display module also includes touch-control structure, and the touch-control structure includes three Local touch area more than individual, one local touch area of indicative of local optical induction region correspondence.

Optionally, each multiple adjacent described indicative of local optical induction region of the LED correspondence；And adjacent two The corresponding indicative of local optical induction region part of the LED is identical.

Compared with prior art, technical scheme has advantages below：

In technical scheme, protective layer and light-emitting display panel are set from top to bottom, the self-luminous is shown There is at least local of panel optical finger print to recognize structure, can realize optical finger print identification function.Protective layer lower surface has Upward upwardly recessed groove, the groove is located at the oblique upper of the light-emitting display panel, while the point-like backlight It is at least partially disposed in the groove, the light that the point-like backlight is sent enters from least one of which surface of the groove Enter the protective layer.Therefore, the light that point-like backlight is sent needs not move through light-emitting display panel, is put into protective layer, And at the contact interface of protective layer and finger, light has carried out the optical phenomenas such as corresponding reflection and refraction, returns again to corresponding Light-emitting display panel of the reflection light below protective layer, connect by the optical finger print identification structure in light-emitting display panel Receive, so that light-emitting display panel obtains corresponding fingerprint image, the fingerprint image collected is clear, finally makes display mould Group is integrated with good fingerprint identification function.

In technical scheme, when using display module, make in the viewing area of light-emitting display panel, have Optical finger print identification structure is the first viewing area, and other viewing areas are the second viewing area.Light in the first viewing area When learning the progress fingerprint image acquisition work of fingerprint recognition structure, specific picture is stopped or shows, and control second to show Region shows the information associated with fingerprint image acquisition work, so that display function and fingerprint identification function cooperate Get up, realize more preferable user experience.

Brief description of the drawings

Fig. 1 is the display module cross-sectional view that one embodiment of the invention is provided；

Fig. 2 is the schematic top plan view of light-emitting display panel in display module shown in Fig. 1；

Fig. 3 is the display module cross-sectional view that another embodiment of the present invention is provided；

Fig. 4 is the display module cross-sectional view that another embodiment of the present invention is provided；

Fig. 5 is the display module cross-sectional view that another embodiment of the present invention is provided；

Fig. 6 is the display module cross-sectional view that another embodiment of the present invention is provided；

Fig. 7 is the display module present invention looks up structural representation that another embodiment of the present invention is provided；

Fig. 8 is the display module present invention looks up structural representation that another embodiment of the present invention is provided.

Embodiment

As described in background, using the aobvious of capacitance type fingerprint imaging technique and light-emitting display panel more than prior art Show that module is carried out integrated.

Therefore, the present invention is provided in a kind of display module, optical fingerprint sensor is integrated in light-emitting display panel (specifically optical fingerprint sensor is integrated in together in light-emitting display panel), so that while display is realized, can Fingerprint identification function is realized, also, passes through corresponding structure design so that display module can collect clearly fingerprint image Picture, realizes that display function and fingerprint identification function cooperate so that user has more preferable usage experience to display module.

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 invention Specific embodiment be described in detail.

In this specification, in addition to Fig. 7 and Fig. 8 partial content, the upper and lower relation in other contents is will show mould Group is placed on below eyes of user, and makes protective layer be located at the orientation of the top to be defined.That is, if One structure is located at the top of another structure, then illustrates when display module is placed on below eyes of user and protective layer is located at most During top, this structure, closer to eyes of user, illustrates in this together than another structure.

The embodiment of the present invention provides a kind of display module, refer to Fig. 1.

The display module includes protective layer 110, light-emitting display panel 120 and point-like backlight 130.Self-luminous is shown Panel 120 is located at the lower section of protective layer 110.There is at least local of light-emitting display panel 120 optical finger print to recognize structure, can Realize optical finger print identification function.The lower surface of protective layer 110 has upwardly recessed groove 111, and groove 111 is aobvious positioned at self-luminous Show the oblique upper of panel 120.The part of point-like backlight 130 is located in groove 111, and the light that point-like backlight is sent is from groove 111 one of surface enters protective layer 110, and the light is as shown in the arrow in Fig. 1 obliquely.In Fig. 1 obliquely Arrow then represents corresponding reflection light.For ease of showing, in each figure of each embodiment, ignore light in different optical medium knots Refraction between structure, illustrates in this together.

Light-emitting display panel 120 includes first substrate 121, second substrate 122 and first substrate 121 and second substrate Self-luminescence circuit layer 123 between 122.First substrate 121 is transparent substrates, and first substrate 121 is located on second substrate 122 Side.

Self-luminescence circuit layer 123 includes viewing area (viewing area is not entirely shown), and the viewing area includes multiple display pictures Plain unit 1231.The present embodiment sets corresponding optical finger print identification structure in the viewing area of light-emitting display panel 120, from And light-emitting display panel 120 is realized optical finger print identification function.

Fig. 2 is refer to, Fig. 2 shows the plan structure of light-emitting display panel 120, light-emitting display panel 120 such as Fig. 2 In shown in big solid-line rectangle, then the viewing area of light-emitting display panel 120 is located in this big solid-line rectangle.The present embodiment is set Putting the viewing area includes the big dotted line frame bag of optical finger print sensing area 120a, optical finger print sensing area 120a in Fig. 2 Enclose, to highlight.

In the present embodiment, optical finger print sensing area 120a area is less than the area of the viewing area, i.e. optical finger print sense Survey a portion that area 120a is only the viewing area.

In other embodiments, when viewing area only includes an optical finger print sensing area, optical finger print can also be sensed The area in area and the area equation of viewing area, i.e., the whole viewing area region is also simultaneously the optical finger print sensing area Region.

In other embodiments, viewing area can also include multiple (two or more) optical finger print sensing areas.Now, each Optical finger print sensing area be viewing area a part, and the sum total of whole optical finger print sensing area can be the display Area, might be less that the viewing area.

Please continue to refer to Fig. 2, the viewing area is included where multiple display pixel cells 1231, display pixel cells 1231 The plan view shape in region is as shown in surrounding small dotted line frame in Fig. 2, and display pixel cells 1231 are generally in ranks (array) arrangement.Cause This, in optical finger print sensing area 120a, equally also includes multiple display pixel cells 1231 that ranks are arranged.Need explanation It is that the display pixel cells 1231 in optical finger print sensing area 120a are only shown in Fig. 2, rather than positioned at optical finger print sensing area Display pixel cells 1231 in 120a are not shown.

It is pointed out that in other embodiment, display pixel cells can also misplace in odd even row (column) and arrange, this When, on microcosmic, every three display pixel cells triangle at an acute angle (such as acute angle isosceles triangle, or equilateral triangle) Three zenithal alignments.In other embodiments, display pixel cells can also be other arrangement modes.

In Fig. 2, in optical finger print sensing area 120a, every 2 × 2 display pixel cells 1231, there are 2 display pixel lists Member 1231, which respectively has in 1 optical finger print sensing element 1232, Fig. 2, has selected one group 2 × 2 therein with small solid-line rectangle A frames Display pixel cells 1231 with strengthen display.

In the present embodiment, each optical finger print sensing element 1232 is specifically produced on 2 × 2 display pixel cells 1231 the first row, i.e., above 2.Optical finger print sensing element 1232 is photoelectric conversion device, for example, can be photoelectricity two Pole pipe etc..

The section schematic construction of light-emitting display panel 120 in Fig. 1 be in Fig. 2 light-emitting display panel 120 along B-B ' points Schematic construction after line cutting.And B-B ' chain-dotted lines are by these optical finger print sensing elements 1232 and its display picture at place Plain unit 1231, therefore, in Fig. 1 sees and an optical finger print sensing element is respectively provided with each display pixel cells 1231 1232.But in fact, in the present embodiment, the display pixel cells 1231 for there was only half in optical finger print sensing area 120a have light Learn fingerprint sensing element 1232.This set can save corresponding cost.

In the present embodiment, each display pixel cells 1231 can be for single pixel structure, i.e. display pixel cells 1231 not Including sub-pixel.Now, optical finger print sensing element 1232 can be produced on the appropriate location of display pixel cells 1231.

In other embodiments, display pixel cells can also include multiple sub-pixels (such as three sub-pixels or four Individual sub-pixel), now optical finger print sensing element can be produced on the region beyond each sub-pixel, can also be produced on some In sub-pixel.

In other embodiments, in optical finger print sensing area, in every m × n display pixel cells, k display pixel cells Each there is at least one optical finger print sensing element, (m represents line number, and n is represented for more than 1 any one integer by m and n Columns, m × n represents m rows and is multiplied by n row), k is 1 to m × n any one integer.Embodiment illustrated in fig. 2 is that m and n is equal to 2, K is equal to 2 situation.

Under the premise of above-mentioned, and when k is equal to 1 (per m × n in a display pixel cells, a display pixel Unit has at least one optical finger print sensing element), m and any one integer that n is more than 1.

In other embodiments, " the situation that m and n are 2 and k is 1 " can be selected.

In other embodiments, when in the optical finger print sensing area, per m × n in a display pixel cells, k institute State display pixel cells each there is at least one optical finger print sensing element in the case of, m and n can be further set In at least 1 be more than 1, and k be less than m × n.

Can be respectively provided with 1 optical finger print sensing element in each display pixel cells in other embodiments.Other realities Apply in example or be respectively provided with multiple (such as 2) optical finger print sensing elements in each display pixel cells.For example, the It is respectively provided with 4 optical finger print sensing elements in each display pixel cells of odd-numbered line, and each display pixel of even number line 2 optical finger print sensing elements are respectively provided with unit.

Can be that each display pixel cells include 3 sub-pixels, also, every 1 × 2 display picture in other embodiments In plain unit, there is 1 display pixel cells that there is 1 optical finger print sensing element.It is in other embodiments or each aobvious Show that pixel cell includes 3 sub-pixels, also, in every two neighboring display pixel cells of odd-numbered line, one of them Display pixel cells have 2 optical finger print sensing elements, and another display pixel cells has 1 optical finger print sensing Part.

In Fig. 2, in optical finger print sensing area 120a, the distance between adjacent optical fingerprint sensing element 1232 can be 30 μm~100 μm.Because the lines spacing of somatic fingerprint is general at 200 μm or so, too intensive optical finger print sensing element 1232 Without actual benefit.When gathering fingerprint image, there are two important requirements：One is the resolution for gathering image, i.e., described The distance between adjacent optical fingerprint sensing element 1232 can not be too big in optical finger print sensing area 120a；Another is collection face Product is sufficiently large, that is, needs to gather the fingerprint image of certain area, so as to obtain enough finger print informations.So adjacent optical The distance between fingerprint sensing element 1232 be 30 μm~100 μm just can be with.If the distance between they are too big, fingerprint image As resolution is inadequate, it is impossible to for fingerprint recognition.If the distance between they are smaller, although image analytic degree can be more preferable, but It is that the effect of actual fingerprint recognition will not be had clear improvement.And because Pixel Dimensions reduce, gather the finger of same area During print image, the data volume of fingerprint image can increase, so that image acquisition time increase, the optical finger print sensing area 120a Collection power consumption increase, can also make it that the time of follow-up image procossing is elongated.

Turning back to Fig. 1 is referred to, optical finger print sensing element 1232 is located at the upper surface of second substrate 122, i.e. the present embodiment will Optical finger print sensing element 1232 is produced on the upper surface of second substrate 122.

Fig. 1 shows that light-emitting display panel 120 can also include sealing structure (not marking).Sealing structure also is located at Between one substrate 121 and second substrate 122.Sealing structure is together with first substrate 121 and second substrate 122, by spontaneous photoelectricity Road floor 123 is sealed between first substrate 121 and second substrate 122.

First substrate 121 be transparent substrates, therefore its specific material can be unorganic glass or lucite, can also It is other plastic products beyond lucite.The material selection range of second substrate 122 can be bigger, can select printing opacity material Material or alternatively non-transparent material.

Turning back to referring to Fig. 1, it is shown that the self-luminescence circuit layer 123 in light-emitting display panel 120 includes multiple displays Pixel cell 1231.It is similar to Fig. 2, the region of display pixel cells 1231 is illustrated in Fig. 1 with dotted line frame, and each shows Show the neighbouring relations of pixel cell 1231, meanwhile, in Fig. 1 section, each display pixel cells 1231 are respectively provided with an optics Fingerprint sensing element 1232.It is to be appreciated that light-emitting display panel 120, which is included, does not include the display of optical finger print sensing element Pixel cell 1231.

It is noted that dotted line frame includes part first substrate 121 and second substrate 122 in Fig. 1, but this is intended merely to just In display, the region of display pixel cells 1231 does not include first substrate 121 and second substrate 122 generally.It is a number of other The cross-section structure of embodiment uses identical dotted line frame display mode, illustrates in this together.

In the present embodiment, light-emitting display panel 120 can be OLED display panel, now self-luminescence circuit layer 123 Display pixel cells 1231 can include anode layer, hole injection layer (HIL), luminescent layer (EML), electron injecting layer (EIL) and The structures such as cathode layer, can also have hole transmission layer (HTL) and electron transfer layer (ETL), can also include driving OLED's TFT, the driving structure such as metal wire and storage capacitance.The principle of luminosity of OLED display panel is：Under certain voltage driving, electronics Luminescent layer is moved to from cathode layer and anode layer respectively with hole, and is met in luminescent layer, exciton is formed and makes light emitting molecule Excite, light emitting molecule sends visible ray (or other light) by radiative relaxation.

Protective layer 110 can be tlat substrate, or the other shapes with flat part.The material of protective layer 110 Can be transparent material, specific material can be other beyond unorganic glass or lucite or lucite Plastic products.

Light-emitting display panel 120 can be located at immediately below protective layer 110, and can directly be laminated in protective layer 110 lower surfaces, i.e. both directly contacts, are directly laminated.In the case of other, light-emitting display panel 120 can also pass through optics Glue is in the lower surface of protective layer 110.Using optics glue, can cause protective layer 110 and light-emitting display panel 120 it Between avoid the presence of air, further improve module optical property.

In the present embodiment, point-like backlight 130 is that part is located in groove 111.In other embodiments, point-like backlight can To be fully located in groove, i.e. point-like backlight is at least partially disposed in groove.

Point-like backlight 130 can be a LED.The light of the LED can be black light, purple light, blueness Light, green light, sodium yellow, red light, near infrared light or white light.Point-like backlight 130 can also be two or more LED, LED is evenly distributed on the different sides of light-emitting display panel 120, and is at least partially disposed at same or different recessed In groove.

To control whole display module that there is good fingerprint recognition performance, and ensure that protective layer 110 possesses enough Mechanical strength, the depth of groove 111 can be arranged on 0.1mm between 0.5mm.

As shown in figure 1, having interval (not marking) between the surface of point-like backlight 130 and groove 111, this interval is utilized Size can adjust the light of point-like backlight 130 to the incident angle of protective layer 110.The presence at the interval, illustrates point-like Usually not directly contacted between the surface of backlight 130 and groove 111.

But in other embodiments, point-like backlight can also be set to be contacted with the surface of groove.

In the present embodiment, the light that point-like backlight 130 is sent enters protective layer 110 from the respective surfaces of groove 111, Reach behind the upper surface of protective layer 110, the interface that can be formed in finger print and the upper surface of protective layer 110 occurs reflection and rolled over The optical phenomena such as penetrate, produce corresponding reflection light；Reflection light returns to protective layer 110 obliquely, and through protective layer 110 Light-emitting display panel 120 is reached, there is light-emitting display panel 120 optical finger print to recognize structure, and therefore, reflection light is final The optical finger print identification structure can be reached, and recognizes that the optical finger print sensing element 1232 in structure connects by optical finger print Receive, so as to realize fingerprint image acquisition, realize fingerprint identification function.

The light that the present embodiment control point-like backlight 130 is sent has propagation angle (i.e. point-like backlight obliquely 130 light sent are initially up or propagate obliquely, without directly being propagated to light-emitting display panel 120 downwards), from And ensure that the light that point-like backlight 130 is sent must have passed through " in the upper surface of protective layer 110 and the interface of finger print The optical phenomena such as reflection and refraction occurs for place " after, enter back into light-emitting display panel 120.That is, the present embodiment avoids depositing In such a light：This light is sent by point-like backlight 130, and after point-like backlight 130 is sent, without " The optical phenomena such as reflection and refraction occurs for the upper surface of protective layer 110 and the interface of finger print ", just it is directly entered self-luminous and shows Show panel 120.This light does not carry information in fingerprint.If this light and other light are together shown into self-luminous Panel 120, the then fingerprint image that optical finger print sensing element 1232 can be caused to obtain fogs.Pass through above-mentioned control, it is to avoid This light, then can improve the fingerprint image quality finally obtained.

In the display module that the present embodiment is provided, light-emitting display panel 120 is located at the lower section of protective layer 110, protective layer 110 have upwardly recessed groove 111, and point-like backlight 130 is arranged in the groove 111 in protective layer 110, so that whole The integrated model of individual display module is simpler, and thickness can be made to thinner.

When the light that point-like backlight 130 is sent enters protective layer 110 by the respective surfaces of groove 111, respective ray of light It is acute angle with being used to contact angle formed by the region of fingerprint in the upper surface of protective layer 110.Now, point-like backlight 130 is sent Light can occur to reflect at the upper surface of protective layer 110 and the interface of finger print by corresponding offset and refraction etc. is existing As, and most of effectively reflection light is irradiated to the optical finger print sensing area 120a of light-emitting display panel 120, it is therefore, whole Individual display module does not need the structures such as light guide plate, it becomes possible to realize the identification of fingerprint image, forms clearly fingerprint image, and Structure is simplified, cost is reduced.

Point-like backlight 130 is located in the groove 111 in protective layer 110, therefore, and point-like backlight 130 arrives protective layer 110 The distance of upper surface is smaller, when this also make it that the light of point-like backlight 130 reaches 110 upper surface of protective layer, and perpendicular to guarantor Angle increase between the normal of the upper surface of sheath 110；On the other hand, it can be reflected when light enters first surface, from And above-mentioned angle can be increased again.The angle increase brings following two advantages again：First, it is reflected into self-luminous and shows The ray regions width increase of panel 120, can better profit from the optical finger print sensing area of light-emitting display panel 120 120a, forms the bigger fingerprint image of area；Second, it is irradiated to the boundary of finger print valley and the upper surface of protective layer 110 The some light in face, be able to can be totally reflected in the upper surface of protective layer 110 and the interface of air, and be irradiated to finger print The light at the interface of spine and the upper surface of protective layer 110, then the optical phenomena such as normally reflected and reflected, now, Diverse location (i.e. paddy position and ridge position) contrast of finger print image can be obviously improved, and fingerprint image quality is improved.

Point-like backlight 130 is arranged on the lower section of protective layer 110 by the present embodiment, and is provided in light-emitting display panel In the groove 111 of 120 oblique uppers.On the premise of point-like backlight 130 is located at the side of light-emitting display panel 120, set again The light that point-like backlight 130 is sent enters protective layer 110, now, what point-like backlight 130 was sent from the surface of groove 111 Light need not be put into protective layer 110 by light-emitting display panel 120, so that the collection for finger print image, i.e., The collection to finger fingerprint image is realized, the utilization rate of respective ray of light is improved, and improving final light-emitting display panel 120 can The semaphore received, the fingerprint image collected is clear, and therefore, display module is integrated with good fingerprint identification function.

In the display module that the embodiment of the present invention is provided, it can be realized by corresponding application method in display module Viewing area in gather fingerprint image, so as to reduce the electronic product apparent size using this display panel, improve The screen accounting of electronic product, improving the appearance looks elegant degree of electronic product (can for example improve the screen accounting of mobile phone productses, improve hand The appearance looks elegant degree of machine product).For example, the optical finger print sensing area 120a in the light-emitting display panel 120 is defined as First viewing area, the viewing area of other parts is defined as the second viewing area；When optical finger print sensing element 1232 is carried out When fingerprint image acquisition works, first viewing area is controlled to stop showing work or show specific picture.Work as optical finger print When sensing element 1232 carries out fingerprint image acquisition work, control second viewing area to show with fingerprint image acquisition and work Associated information.This application method enables to display function and fingerprint identification function to cooperate, and realizes more preferable User experience.

The application method can also further open up the application scenarios of fingerprint identification function, for example, in optical finger print sense Survey before element 1232 is not operated, make first viewing area show and show icon accordingly, instruction user is by finger It is put into icon.After user places a digit into display figure target area, using existing display panel itself or tyre Touch controllable function, perceives user and has placed a digit into the first viewing area, so as to control optical finger print sensing element 1232 enter working condition, now, and the fingerprint image of pressing fingerprint can be by the optical finger print sensing below the first viewing area Part 1232 is gathered, and fingerprint image acquisition function is completed, and it is possible to further apply to the existing fingerprint image with internal reservoir It is identified, further with the function such as being encrypted/unlock.

Another embodiment of the present invention provides another display module, refer to Fig. 3.

The display module includes protective layer 210, light-emitting display panel 220 and point-like backlight 230.Self-luminous is shown Panel 220 is located at the lower section of protective layer 210.There is at least local of light-emitting display panel 220 optical finger print to recognize structure, can Realize optical finger print identification function.The lower surface of protective layer 210 has upwardly recessed groove 211, and groove 211 is aobvious positioned at self-luminous Show the oblique upper of panel 220.The part of point-like backlight 230 is located in groove 211, and the light that point-like backlight 230 is sent is from recessed One of surface of groove 211 enters protective layer 210, and the light is as shown in the arrow in Fig. 3 obliquely.In Fig. 3 obliquely Arrow then represent corresponding reflection light.

Light-emitting display panel 220 includes first substrate 221, second substrate 222 and first substrate 221 and second substrate Self-luminescence circuit layer 223 between 222.First substrate 221 is transparent substrates, and first substrate 221 is located on second substrate 222 Side；Self-luminescence circuit layer 223 includes viewing area (being not entirely shown), and the viewing area includes multiple display pixel cells, such as Fig. 3 In show some display pixel cells 2231 therein.The viewing area can include one or more optical finger print sensing Area.In the optical finger print sensing area, per in m × n display pixel cells, each of k display pixel cells has extremely Few 1 optical finger print sensing element, m and any one integer that n is more than 1, k is 1 to m × n any one integer.As schemed Show that each display pixel cells 2231 are respectively provided with optical finger print sensing element 2232 in 3.Because the viewing area is included accordingly Optical finger print sensing area, and optical finger print sensing area has the structures such as optical finger print sensing element, therefore, self-luminous display surface Plate 220 can realize optical finger print identification function, refer to previous embodiment corresponding contents.

In the present embodiment, optical finger print sensing element 2232 is located at the lower surface of first substrate 121, i.e. the present embodiment by optics Fingerprint sensing element 2232 is produced on the lower surface of first substrate 121.

Apart from minimum surface it is first surface (not marking) to light-emitting display panel 220 in the surface of groove 211, The light that point-like backlight 230 is sent enters protective layer 210 from the first surface.It should be noted that each surface is to certainly The distance of light emitting display panel 220 is the centre of surface on each surface to the distance of light-emitting display panel 220.

The top surface of groove 211 is parallel with the upper and lower surface of protective layer 210.The first surface is flat Face, and the lower surface of the top surface and protective layer 210 of the first surface and groove 211 angle all be obtuse angle, i.e., this Shi Suoshu first surfaces are clinoplain, as shown in Figure 3.The first surface of this inclined plane more contributes to more light The upper surface of protective layer 210 is reached with bigger incidence angle, so as to finally enable light-emitting display panel 220 utilize Geng great areas Domain is used for fingerprint image acquisition, and the reflection light obtained is the more obvious light of contrast, therefore, display module Fingerprint recognition performance is improved.

In the present embodiment, the top surface of groove 211 have with point-like backlight 230 just to light shield layer 240.In the phase Answer position that light shield layer 240 is set, in order to block point-like backlight 230 and do not realized by user.

Another embodiment of the present invention provides another display module, refer to Fig. 4.

The display module includes protective layer 310, light-emitting display panel 320 and point-like backlight 330.Self-luminous is shown Panel 320 is located at the lower section of protective layer 310.There is at least local of light-emitting display panel 320 optical finger print to recognize structure, can Realize optical finger print identification function.The lower surface of protective layer 310 has upwardly recessed groove 311, and groove 311 is aobvious positioned at self-luminous Show the oblique upper of panel 320.The part of point-like backlight 330 is located in groove 311, and the light that point-like backlight 330 is sent is from recessed One of surface of groove 311 enters protective layer 310, and the light is as shown in the arrow in Fig. 4 obliquely.In Fig. 4 obliquely Arrow then represent corresponding reflection light.

Light-emitting display panel includes first substrate 321, second substrate 322 and first substrate 321 and second substrate 322 Between self-luminescence circuit layer 323.First substrate 321 is transparent substrates, and first substrate 321 is located at the top of second substrate 322.From Illuminating circuit layer 323 includes viewing area, and viewing area includes multiple display pixel cells, shows in such as Fig. 4 therein some aobvious Show pixel cell 3231.

From unlike previous embodiment, optical finger print sensing element is arranged at the upper table of first substrate 321 by the present embodiment Face.

Specifically, the upper surface of first substrate 321 includes being located at one or more optical finger print sensing above viewing area Area.The optical finger print sensing area has optical finger print sensing element.Also, this implementation continues to set per m × n display pixel In the region of the top of unit 3231, each top of k display pixel cells 3231 has at least one optical finger print sensing Part, m and n are more than 1 any one integer, and k is 1 to m × n any one integer.As shown each display pixel in Fig. 4 The top of unit 3231 is respectively provided with an optical finger print sensing element 3232.Because the upper surface of first substrate 321 has corresponding light Fingerprint sensing area is learned, and optical finger print sensing area has the structures such as optical finger print sensing element, therefore, light-emitting display panel 320 can realize optical finger print identification function, refer to previous embodiment corresponding contents.

In the present embodiment, each optical finger print sensing element 3232 is also especially set to be located at the oblique of display pixel cells 3231 Top.So as to prevent optical finger print sensing element 3232 from blocking the effective display area domain (opening of each display pixel cells 3231 Area).But in other embodiments, when the area of optical finger print sensing element 3232 is obviously smaller than display pixel cells 3231, The position of optical finger print sensing element 3232 can more more options, even if optical finger print sensing element 3232 be located at open region just on Side, also has substantially no effect on the normal display of display pixel cells 3231.

It should be noted that on the premise of optical finger print sensing element 3232 is arranged at into the upper surface of first substrate 321, In other embodiments, the layout designs of optical finger print sensing area and optical finger print sensing element 3232 can have other more shapes Formula, present invention contrast is not construed as limiting.

Apart from minimum surface it is first surface (not marking) to light-emitting display panel 320 in the surface of groove 311, The light that point-like backlight 330 is sent enters protective layer 310 from the first surface.It should be noted that each surface is to certainly The distance of light emitting display panel 320 is the centre of surface on each surface to the distance of light-emitting display panel 320.

The top surface of groove 311 is parallel with the upper and lower surface of protective layer 310.

The first surface is concave curved surface, and the top edge of the concave curved surface and the top surface of groove are connected, the concave curved The lower edge in face and the lower surface of protective layer are connected.

This concave curved surface first surface is more prone to processing, and the yield of protective layer 310 is higher, and cost is lower.

In the present embodiment, in the upper surface of protective layer 310, with point-like backlight 330 just to part there is light shield layer 340.Light shield layer 340 is set in the relevant position, in order to block point-like backlight 330 and do not realized by user.

In other embodiments, can the upper surface of the protective layer and the point-like backlight just to part have and hide Photosphere, and the top surface of the groove also has light shield layer.

Another embodiment of the present invention provides another display module, refer to Fig. 5.

The display module includes protective layer 410, light-emitting display panel 420 and point-like backlight 430.Self-luminous is shown Panel 420 is located at the lower section of protective layer 410.There is light-emitting display panel 420 optical finger print to recognize structure, can realize that optics refers to Line identification function.The lower surface of protective layer 410 has upwardly recessed groove 411, and groove 411 is located at light-emitting display panel 420 Oblique upper.The part of point-like backlight 430 be located at groove 411 in, the light that point-like backlight 430 is sent from groove 411 its In surface enter protective layer 410, the light is as shown in the arrow in Fig. 5 obliquely.Arrow in Fig. 5 obliquely then table Show corresponding reflection light.

Light-emitting display panel 420 includes first substrate 421, second substrate 422 and first substrate 421 and second substrate Self-luminescence circuit layer 423 between 422.First substrate 421 is transparent substrates, and first substrate 421 is located on second substrate 422 Side；Self-luminescence circuit layer 423 includes viewing area (being not entirely shown), and the viewing area includes multiple display pixel cells, such as Fig. 5 In show some display pixel cells 4231 therein.The viewing area can include one or more optical finger print sensing Area.In the optical finger print sensing area, per in m × n display pixel cells, each of k display pixel cells has extremely Few 1 optical finger print sensing element, m and any one integer that n is more than 1, k is 1 to m × n any one integer.As schemed Show that each display pixel cells 4231 are respectively provided with an optical finger print sensing element 4232 in 5.Because the viewing area includes Corresponding optical finger print sensing area, and optical finger print sensing area has the structures such as optical finger print sensing element, therefore, self-luminous shows Show that panel 420 can realize optical finger print identification function, refer to previous embodiment corresponding contents.

Apart from minimum surface it is first surface (not marking) to light-emitting display panel 420 in the surface of groove 411, The light that point-like backlight 430 is sent enters protective layer 410 from the first surface.It should be noted that each surface is to certainly The distance of light emitting display panel 420 is the centre of surface on each surface to the distance of light-emitting display panel 420.

The top surface of groove 411 is parallel with the upper and lower surface of protective layer 410.The first surface is flat Face, and the lower surface of the top surface and protective layer 410 of the first surface and groove 411 angle all be obtuse angle, i.e., this Shi Suoshu first surfaces are clinoplain, as shown in Figure 5.The first surface of this inclined plane more contributes to more light The upper surface of protective layer 410 is reached with bigger incidence angle, so as to finally enable light-emitting display panel 420 utilize Geng great areas Domain is used for fingerprint image acquisition, and the reflection light obtained is the more obvious light of contrast, therefore, display module Fingerprint recognition performance is improved.

The top surface of groove 411 have with point-like backlight 430 just to light shield layer 440.Set in the relevant position Light shield layer 440, in order to block point-like backlight 430 and do not realized by user.

The first surface has anti-reflection film 450, and the light that anti-reflection film 450 can increase point-like backlight 430 enters guarantor The ratio of sheath 410.

There is thickening layer 460 between light-emitting display panel 420 and protective layer 410.Thickening layer 460 can be optical cement, I.e. light-emitting display panel 420 can be pasted onto the lower section of protective layer 410.The material of the optical cement layer can be specifically temperature-sensitive light Learn glue-line, Photosensitive optical glue-line or optical double-sided adhesive tape band.The presence of the optical cement can cause protective layer and self-luminous to show Avoid the presence of air as far as possible between panel, further improve the optical property of module.

In other embodiments, thickening layer can not be optical cement, but other solid substrates, and it is possible to pass through phase again Thickening layer is bonded together by the glue-line answered with protective layer and light-emitting display panel.Now thickening layer can be without electrical work( The structure of energy, can also be the touch sensitive layer with transparency electrode.

In other embodiments, light-emitting display panel itself is integrated with touch sensing function.

Another embodiment of the present invention provides another display module, refer to Fig. 6.

The display module includes protective layer 510, light-emitting display panel 520 and point-like backlight.Self-luminous display surface Plate 520 is located at the lower section of protective layer 510.There is light-emitting display panel 520 optical finger print to recognize structure, can realize optical finger print Identification function.The lower surface of protective layer 510 has two upwardly recessed grooves, respectively groove 511 and groove 512, groove 511 The oblique upper of light-emitting display panel 520 is respectively positioned on groove 512.

In the present embodiment, the point-like backlight is two LEDs, respectively LED 531 and LED 532.LED 531 and LED 532 respectively positioned at the left side and right edge of light-emitting display panel 520, therefore they are evenly distributed.

In other embodiments, the point-like backlight is two or more LED, the LED be evenly distributed on it is described from The different sides of light emitting display panel.

The part of LED 531 is located in groove 511, and the light that LED 531 is sent enters from one of surface of groove 511 Enter protective layer 510, the light is as shown in the arrow in Fig. 6 obliquely from left to right.Arrow in Fig. 6 from left to right obliquely Then represent corresponding reflection light.

The part of LED 532 is located in groove 512, and the light that LED 532 is sent enters from one of surface of groove 512 Enter protective layer 510, the light is as shown in the arrow in Fig. 6 obliquely from right to left.Arrow in Fig. 6 from right to left obliquely Then represent corresponding reflection light.

Light-emitting display panel 520 includes first substrate 521, second substrate 522 and first substrate 521 and second substrate Self-luminescence circuit layer 523 between 522.First substrate 521 is transparent substrates, and first substrate 521 is located on second substrate 522 Side；Self-luminescence circuit layer 523 includes viewing area (being not entirely shown), and the viewing area includes multiple display pixel cells, such as Fig. 6 In show some display pixel cells 5231 therein.The viewing area can include one or more optical finger print sensing Area.In the optical finger print sensing area, per in m × n display pixel cells, each of k display pixel cells has extremely Few 1 optical finger print sensing element, m and any one integer that n is more than 1, k is 1 to m × n any one integer.As schemed Show that each display pixel cells 5231 are respectively provided with an optical finger print sensing element 5232 in 6.Because the viewing area includes Corresponding optical finger print sensing area, and optical finger print sensing area has the structures such as optical finger print sensing element, therefore, self-luminous shows Show that panel 520 can realize optical finger print identification function, refer to previous embodiment corresponding contents.

Apart from minimum surface it is first surface to light-emitting display panel 520 in the surface of groove 511 (groove 512) (not marking), the light that LED 531 (LED 532) is sent enters protective layer 510 from the first surface.Need explanation Be, each surface to the distance of light-emitting display panel 520 be each surface centre of surface to light-emitting display panel 520 Distance.

The top surface of groove 511 (groove 512) is parallel with the upper and lower surface of protective layer 510.Described first Surface is plane, and the top surface and the lower surface of protective layer 510 of the first surface and groove 511 (groove 512) Angle is all right angle, i.e., now the first surface is perpendicular, as shown in Figure 6.This first surface in perpendicular More light are more contributed to reach the upper surface of protective layer 510 with bigger incidence angle, so as to finally make self-luminous display surface Plate 520 can utilize bigger region to be used for fingerprint image acquisition, and the reflection light obtained is that contrast is more obvious Light, therefore, the fingerprint recognition performance of display module are improved.

It is accordingly interior that more structures, property and advantage for providing display module about the present embodiment refer to previous embodiment Hold.

Another embodiment of the present invention provides another display module, refer to Fig. 7.Different from Fig. 1 to Fig. 6, Fig. 7 is to face upward Depending on schematic diagram, i.e. Fig. 7 in order to show the structure below protective layer, it is shown that in terms of protective layer following table upwardly surface direction Schematic diagram, in such manner, it is possible to see the structures such as corresponding point-like backlight, light-emitting display panel and protective layer.Therefore, Fig. 7 Cross-section structure may be referred to Fig. 1 to Fig. 6, in turn, Fig. 1 to Fig. 6 structure of looking up may be referred to Fig. 7.

Looked up shown in Fig. 7 in structure：The display module includes protective layer 610, light-emitting display panel 620 and the point-like back of the body Light source 630；Protective layer 610 is located at bottom, and the top of protective layer 610 is light-emitting display panel 620, point-like backlight 630 In the top of protective layer 610, and it is to be located at the side of light-emitting display panel 620.There is groove 611, groove in protective layer 610 611 are located at the side of light-emitting display panel 620.Point-like backlight 630 is located in groove 611.

When carrying out cutting to the structure of looking up shown in Fig. 7, and when being put by Fig. 1 to Fig. 6, then it will also be seen that In the display module that the present embodiment is provided：Light-emitting display panel 620 is located at the lower section of protective layer 610；The lower surface of protective layer 610 With upwardly recessed groove 611, groove 611 is located at the oblique upper of light-emitting display panel 620；Point-like backlight 630 is located at In groove 611, the light that point-like backlight 630 is sent enters protective layer 610 from one of surface of groove 611.It can combine Referring to figs. 1 to Fig. 6 corresponding contents.

Light-emitting display panel 620 include first substrate (not shown), second substrate (not shown) and first substrate and Self-luminescence circuit layer (not shown) between second substrate.First substrate is transparent substrates, and first substrate is located on second substrate Side；The rectangular area that self-luminescence circuit layer includes mark light-emitting display panel 620 in viewing area, Fig. 7 includes viewing area place Region.The viewing area includes multiple display pixel cells (not shown).The viewing area can include one or more light Learn fingerprint sensing area.In the optical finger print sensing area, per m × n display pixel cells in, k display pixel cells it is every One has at least one optical finger print sensing element, and m and n are more than 1 any one integer, k for 1 to m × n it is any one Individual integer.Because the viewing area includes corresponding optical finger print sensing area, and optical finger print sensing area has optical finger print sense The structures such as element are surveyed, therefore, light-emitting display panel 620 can realize optical finger print identification function, refer to previous embodiment Corresponding contents.

Please continue to refer to Fig. 7, point-like backlight 630 is four LEDs (not marking), and four LEDs are evenly distributed on certainly The same side of light emitting display panel 620.Groove 611 is larger, simultaneously four LEDs can be caused to be at least partially disposed at groove In 611, now, four LEDs are generally evenly distributed in groove 611.

In plane shown in Fig. 7, four parts of light-emitting display panel 620 are shown using four adjacent dotted line frames The optical finger print sensing area is divided into four indicative of local optical induction regions 621 by optical sensor region 621, i.e. the present embodiment. One LED one indicative of local optical induction region 621 of correspondence.

Indicative of local optical induction region is (to be not excluded for former dividing mode, i.e., to repartitioning for the optical finger print sensing area It there may be the situation of indicative of local optical induction region one optical finger print sensing area of correspondence).Also, work as only one of which During the optical finger print sensing area, each usual indicative of local optical induction region is the various pieces area of the optical finger print sensing area Domain.

Though do not shown in Fig. 7, display module also includes touch-control structure, and the touch-control structure includes the part of four Touch area, one part touch area of a correspondence of indicative of local optical induction region 621 (meanwhile, a local touch area One indicative of local optical induction region 621 of correspondence).In the bottom plan shown in Fig. 7, if local touch area is shown, Then corresponding local touch area and local optical sensor region 621 are completely superposed.

By said structure, in the display module that the present embodiment is provided, it is possible to use a LED is used as a part The light source in optical sensor region 621, meanwhile, judge finger is contacted in which specific part using corresponding local touch area Touch area, and then control corresponding indicative of local optical induction region 621 and LED to be operated, realize to finger fingerprint image Collection.In this mode, due to only using some LED therein and some indicative of local optical induction region 621 every time, It therefore, there is no need to while using whole LEDs, it is not required that whole light-emitting display panel 620 all carries out fingerprint collecting, not only The picking rate of fingerprint image is improved, and reduces power consumption.

It should be noted that above-mentioned touch-control structure can be capacitance type touch-control structure, capacitance type touch-control structure can be position (protective layer lower surface is for example fitted or is produced on, in another example laminating or making between protective layer and light-emitting display panel In light-emitting display panel upper surface), capacitance type touch-control structure can also be integrated in inside light-emitting display panel.

In other embodiments, point-like backlight can also be two, three or more than five LEDs, and these LEDs are equal The even same side for being distributed in light-emitting display panel.Accordingly, the number of indicative of local optical induction region and local touch area It is equal with the number of LED, and specific corresponding to mode is also to correspond.Refer to above-mentioned corresponding contents.

In other embodiment, each indicative of local optical induction region has multiple local touch areas, so as to improve detection hand Refer to the precision of the position of pressing, improve the degree of accuracy of positioning finger pressing.

Another embodiment of the present invention provides another display module, refer to Fig. 8.Different from Fig. 1 to Fig. 6, Fig. 8 is to face upward Depending on schematic diagram, i.e. Fig. 8 in order to show the structure below protective layer, it is shown that in terms of protective layer following table upwardly surface direction Schematic diagram, in such manner, it is possible to see the structures such as corresponding point-like backlight, light-emitting display panel and protective layer.Therefore, Fig. 8 Cross-section structure may be referred to Fig. 1 to Fig. 6, in turn, Fig. 1 to Fig. 6 structure of looking up may be referred to Fig. 8.

Looked up shown in Fig. 8 in structure：The display module includes protective layer 710, light-emitting display panel 720 and the point-like back of the body Light source (point-like backlight is not marked individually, and point-like backlight includes follow-up six LEDs)；Protective layer 710 is located at bottom, protects The top of sheath 710 is light-emitting display panel 720, and the point-like backlight is equally to be located at the top of protective layer 710, and is position In the side of light-emitting display panel 720.There is groove 711, groove 711 is located at the side of light-emitting display panel 720 in protective layer 710 Side.The point-like backlight is located in groove 711.

When carrying out cutting to the structure of looking up shown in Fig. 8, and when being put by Fig. 1 to Fig. 6, then it will also be seen that In the display module that the present embodiment is provided：Light-emitting display panel 720 is located at the lower section of protective layer 710；The lower surface of protective layer 710 With upwardly recessed groove 711, groove 711 is located at the oblique upper of light-emitting display panel 720；The point-like backlight is located at In groove 711, the light that the point-like backlight is sent enters protective layer 710 from one of surface of groove 711.It can combine Referring to figs. 1 to Fig. 6 corresponding contents.

Light-emitting display panel 720 include first substrate (not shown), second substrate (not shown) and first substrate and Self-luminescence circuit layer (not shown) between second substrate.First substrate is transparent substrates, and first substrate is located on second substrate Side；The rectangular area that self-luminescence circuit layer includes mark light-emitting display panel 720 in viewing area, Fig. 8 includes viewing area place Region.The viewing area includes multiple display pixel cells (not shown).The viewing area can include one or more light Learn fingerprint sensing area.In the optical finger print sensing area, per m × n display pixel cells in, k display pixel cells it is every One has at least one optical finger print sensing element, and m and n are more than 1 any one integer, k for 1 to m × n it is any one Individual integer.Because the viewing area includes corresponding optical finger print sensing area, and optical finger print sensing area has optical finger print sense The structures such as element are surveyed, therefore, light-emitting display panel 720 can realize optical finger print identification function, refer to previous embodiment Corresponding contents.

As shown in figure 8, the point-like backlight is six LEDs, respectively LED a, LED b, LED c, LED D, LED e and LED f, six LEDs are evenly distributed on the same side of light-emitting display panel 720, and are respectively positioned on recessed In groove 711.

The correspondence of light-emitting display panel 720 includes 14 indicative of local optical induction regions, respectively indicative of local optical induction zone Domain 1-14.In plane shown in Fig. 8, the optics of light-emitting display panel 720 is referred to using 14 adjacent dotted line frames Line sensing divides into 14 indicative of local optical induction regions.One LED four indicative of local optical induction region of correspondence.

With Fig. 7 identicals, in Fig. 8, indicative of local optical induction region is repartitioning (no to the optical finger print sensing area Exclude former dividing mode, it is possible to there are the feelings of indicative of local optical induction region one optical finger print sensing area of correspondence Condition).Also, when optical finger print sensing area described in only one of which, each usual indicative of local optical induction region is that the optics refers to The various pieces region of line sensing area.

Specifically, in the present embodiment, LED a correspondence indicative of local optical induction region 1-4, LED b correspondence indicative of local optical senses Answer region 3-6, LED c correspondence indicative of local optical induction region 5-8, LED d correspondence indicative of local optical induction region 7-10, LED e Correspondence indicative of local optical induction region 9-7, LED f correspondence indicative of local optical induction region 6-14.LED a is to LED f corresponding regions Width as shown in Ra to Rf in Fig. 8, these width can prove above-mentioned LED it is corresponding with indicative of local optical induction region pass System, i.e., the one continuous four indicative of local optical induction region of LED correspondence.Now, by taking adjacent LED a and LED b as an example, Their corresponding described indicative of local optical induction region parts are identical, i.e., they all correspond to indicative of local optical induction region 3-4.Meanwhile, " part is identical " illustrates that each of which also corresponds to different indicative of local optical induction regions, such as LED a correspondence indicative of local optical sensings Region 1-2, LED b correspondence indicative of local optical induction region 5-6.

Meanwhile, though do not shown in Fig. 8, display module also includes touch-control structure, and the touch-control structure includes 14 Local touch area, indicative of local optical induction region correspondence one local touch area, i.e. indicative of local optical induction region and Local touch area is corresponded.In the bottom plan shown in Fig. 8, if local touch area is shown, accordingly Local touch area and local optical sensor region are completely superposed.Correspondence indicative of local optical sense can be controlled using local touch area The working condition (switching for example worked with the two states of inoperative) in region is answered, previous embodiment corresponding contents are referred to. By said structure, in the display module that the present embodiment is provided, LED number is less than the number of the indicative of local optical induction region Mesh, one LED of multiple indicative of local optical induction region correspondences, each multiple adjacent indicative of local optical sense of the LED correspondence Answer region, and the corresponding indicative of local optical induction region part of adjacent two LEDs is identical.

The present embodiment why so that said structure and region be correspondingly arranged, be because can by the image-forming principle of the present invention Know：Display module can only use a LED is luminous (to be had if two LEDs are used simultaneously in fingerprint imaging, every time Interference, makes image blur)；And if part phase is not present in the corresponding indicative of local optical induction region of two adjacent LEDs lamp Meanwhile, when finger is pressed against the boundary of two indicative of local optical induction regions, then usually require to be imaged twice, acquisition is not Same partial fingerprint image, then they are synthesized together.But, the present embodiment is by setting more multiple LEDs, so as to reduce Distance between LED.Meanwhile, by further segmenting indicative of local optical induction region, increase the number of indicative of local optical induction region, So as to reach：Multiple adjacent indicative of local optical induction region one LED of correspondence, and two adjacent LEDs are corresponding The indicative of local optical induction region part is identical.Now, according to finger pressing position, only need to open and finger pressing position every time Put immediate LED and carry out fingerprint image acquisition, and total energy is adopted using some most suitable LED and then fingerprint image Collection, it is Polaroid with regard to corresponding fingerprint image can be collected therefore, it is possible to realize.Therefore, further increase collecting efficiency and Collection effect.

In order to which above-mentioned purpose is better achieved, the spacing between LED can also be made wide much smaller than the pressing covering of finger Spend (can for example make LED is smaller than 5mm).

Have each embodiment of this specification mutually can replacing and being complementary to one another part more.Although present disclosure is as above, The present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, can make various Change with changing, therefore protection scope of the present invention should be defined by claim limited range.

Claims

1. a kind of display module, including：

Protective layer；

Light-emitting display panel, the light-emitting display panel is located at below the protective layer；

Characterized in that,

There is at least local of the light-emitting display panel optical finger print to recognize structure, can realize that optical finger print recognizes work( Energy；

The protective layer lower surface has a upwardly recessed groove, the groove be located at the light-emitting display panel it is oblique on Side；

The display module also includes：

Point-like backlight, the point-like backlight is at least partially disposed in the groove, the light that the point-like backlight is sent Enter the protective layer from least one of which surface of the groove.

2. display module as claimed in claim 1, it is characterised in that the light-emitting display panel includes first substrate, the Self-luminescence circuit layer between two substrates and first substrate and second substrate；The first substrate is transparent substrates, described the One substrate is located above the second substrate；The self-luminescence circuit layer includes viewing area, and the viewing area includes multiple displays Pixel cell；The viewing area includes one or more optical finger print sensing area；In the optical finger print sensing area, per m × n In the individual display pixel cells, each of the k display pixel cells has at least one optical finger print sensing element, m With any one integer that n is more than 1, k is 1 to m × n any one integer.

3. display module as claimed in claim 2, it is characterised in that the optical finger print sensing element is located at second base Plate upper surface, or positioned at the first substrate lower surface.

4. display module as claimed in claim 1, it is characterised in that the light-emitting display panel includes first substrate, the Self-luminescence circuit layer between two substrates and first substrate and second substrate；The first substrate is transparent substrates, described the One substrate is located above the second substrate；The self-luminescence circuit layer includes viewing area, and the viewing area includes multiple displays Pixel cell；The first substrate upper surface includes being located at one or more optical finger print sensing above the viewing area Area；The optical finger print sensing area has optical finger print sensing element.

5. display module as claimed in claim 4, it is characterised in that in the optical finger print sensing area, individual described per m × n In region above display pixel cells, each top of the k display pixel cells has at least one optical finger print sense Element, m and any one integer that n is more than 1 are surveyed, k is 1 to m × n any one integer.

6. display module as claimed in claim 5, it is characterised in that the optical finger print sensing element is located at the display picture The oblique upper of plain unit.

7. display module as claimed in claim 1, it is characterised in that in the surface of the groove, shows to the self-luminous The minimum surface of panel distance is first surface, and the light that the backlight is sent enters the protection from the first surface Layer.

8. display module as claimed in claim 7, it is characterised in that the top surface of the groove is upper with the protective layer Surface is parallel with lower surface；The first surface is plane, the top surface of the first surface and the groove and described The angle of the lower surface of protective layer is all right angle.

9. display module as claimed in claim 7, it is characterised in that the top surface of the groove is upper with the protective layer Surface is parallel with lower surface；The first surface is plane, the top surface of the first surface and the groove and described The angle of the lower surface of protective layer is all obtuse angle.

10. display module as claimed in claim 7, it is characterised in that the first surface is concave curved surface, the concave curved surface Top edge is connected with the top surface of the groove, and the lower edge of the concave curved surface is connected with the lower surface of the protective layer.

11. display module as claimed in claim 7, it is characterised in that the first surface has anti-reflection film, the anti-reflection film The light that the backlight can be increased enters the ratio of the protective layer.

12. the display module as described in claim 1 any one, it is characterised in that in the upper surface of the protective layer, with institute State backlight just to part there is light shield layer；Or, the top surface of the groove has light shield layer；Or, the protection Upper surface and the backlight of layer just to part there is light shield layer, and the top surface of the groove also has light shield layer.

13. display module as claimed in claim 1, it is characterised in that the light-emitting display panel and the protective layer it Between have thickening layer.

14. the display module as described in claim 1 to 13 any one, it is characterised in that the point-like backlight is one LED；Or, the point-like backlight is two or more LED, and the groove is multiple, and a LED is located at one In the groove.

15. the display module as described in claim 1 to 13 any one, it is characterised in that the point-like backlight is two Above LED, described two above LEDs are evenly distributed in the same groove.

16. display module as claimed in claim 15, it is characterised in that the light-emitting display panel includes more than two Indicative of local optical induction region, one indicative of local optical induction region of a LED correspondence；The display module also includes Touch-control structure, the touch-control structure includes more than two local touch areas, an indicative of local optical induction region correspondence One local touch area.

17. display module as claimed in claim 16, it is characterised in that the light-emitting display panel includes more than three Indicative of local optical induction region, the LED number is less than the number of the indicative of local optical induction region；The display module is also wrapped Touch-control structure is included, the touch-control structure includes the local touch area of more than three, an indicative of local optical induction region pair Answer a local touch area.

18. display module as claimed in claim 17, it is characterised in that each described multiple adjacent institute of LED correspondence State indicative of local optical induction region；And the corresponding indicative of local optical induction region part of adjacent two LEDs is identical.