CN110208982A

CN110208982A - Liquid crystal display device

Info

Publication number: CN110208982A
Application number: CN201910336163.XA
Authority: CN
Inventors: 严斌; 毛春程; 王鹏; 罗建红
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2019-09-06
Anticipated expiration: 2039-04-24
Also published as: CN110208982B

Abstract

The application provides a kind of liquid crystal display device, is related to field of display technology, for reducing influence of the preposition fingerprint identification function to the screen accounting of terminal device.Liquid crystal display device includes backlight module, liquid crystal display die set and cover board, and liquid crystal display die set includes display panel, upper polarizing layer and lower polarizing layer；Liquid crystal display device further includes collimated light extraction structure and fingerprint collecting structure；Between lower polarizing layer and cover board, fingerprint collecting structure is located at collimated light extraction structure far from cover board side for collimated light extraction structure and fingerprint collecting structure；The light-emitting surface of collimated light extraction structure is towards cover board, and collimated light extraction structure is located at least in the viewing area of liquid crystal display device, and collimated light extraction structure is located at the partial light permeability of viewing area；Fingerprint collecting structure is used to receive the reflected light of the collimated light of the first angle of collimated light extraction structure injection.

Description

Liquid crystal display device

Technical field

This application involves field of display technology more particularly to a kind of liquid crystal display devices.

Background technique

With the development of optical technology and semiconductor technology, with liquid crystal display (Liquid Crystal Display, LCD) have many advantages, such as that frivolous, low in energy consumption, radiationless, excitation purity is good and contrast is high for the flat terminal device of representative, exist Display field occupies leading position.

The terminal device of height screen accounting becomes because of its unique appearance compared with by the favorite product of consumer.Simultaneously as referring to Line is therefore human body identification feature that is inherent, unique, can distinguishing with other people has fingerprint recognition function The high screen accounting terminal device of energy becomes a kind of development trend.

However, to realize fingerprint identification function, the screen accounting of terminal device, those skilled in the art inevitably will affect Member improves screen accounting elsewhere (such as the back side and periphery) by the way that fingerprint recognition mould group to be moved to from mobile phone front, i.e., from Preposition fingerprint becomes postposition fingerprint or side fingerprint.But either postposition fingerprint or side fingerprint, it all can be to a certain extent The globality of terminal device appearance is influenced, and also all is easy to be received by consumer without preposition fingerprint (shielding lower fingerprint).

Therefore, how to reduce the influence of the preposition fingerprint identification function of terminal device to the screen accounting of terminal device, become Those skilled in the art's technical issues that need to address.

Summary of the invention

The embodiment of the present application provides a kind of liquid crystal display device, for reducing preposition fingerprint identification function to terminal device Shield the influence of accounting.

In order to achieve the above objectives, the present embodiment adopts the following technical scheme that

In a first aspect, a kind of liquid crystal display device is provided, including backlight module, liquid crystal display die set and cover board, liquid crystal Display module includes display panel, upper polarizing layer and lower polarizing layer, and lower polarizing layer is close to backlight module, and upper polarizing layer is close to lid Plate；Liquid crystal display device further include: collimated light extraction structure and fingerprint collecting structure；Collimated light extraction structure and fingerprint collecting knot For structure between lower polarizing layer and cover board, fingerprint collecting structure is located at collimated light extraction structure far from cover board side；Collimated light goes out The light-emitting surface of structure is penetrated towards cover board, collimated light extraction structure is located at least in the viewing area of liquid crystal display device, and collimated light goes out Penetrate the partial light permeability that structure is located at viewing area；Fingerprint collecting structure is used to receive the first angle of collimated light extraction structure injection The reflected light of collimated light.By the way that the collimated light extraction structure of light transmission is arranged in liquid crystal display device, and make collimated light outgoing knot The light-emitting surface of structure provides fingerprint recognition and uses up towards cover board to realize in the case where not influencing normally to show.

Optionally, along the thickness direction of liquid crystal display device, the projection of the projection covering fingerprint collecting structure of black matrix.It will Fingerprint collecting structure is mainly disposed to black matrix region, can to avoid fingerprint collecting structure setting after sub-pixel unit, The transmitance that display is used up is influenced, so that fingerprint collecting structure while not reducing pixel aperture ratio, realizes that shielding lower fingerprint knows Not.It is not necessary that fingerprint collecting structure setting at the back side or side of liquid crystal display device, has been ensured the integrality of airframe structure, band Preferably to unlock experience.

Optionally, fingerprint collecting structure is integrated in display panel.Preparation process can be simplified.

Optionally, display panel further includes array substrate and the counter substrate that is oppositely arranged with array substrate, black matrix It is arranged in counter substrate；Fingerprint collecting structure setting is in black matrix far from array substrate side.Black matrix can be reduced to reflection To the filtering of the light of fingerprint collecting structure.

Optionally, fingerprint collecting structure setting is between upper polarizing layer and cover board.Black matrix can be reduced to reflexing to fingerprint The filtering of the light of collection result.

Optionally, display panel includes multiple sub-pixel units, and black matrix is between arbitrary neighborhood sub-pixel unit；Refer to Line acquisition structure includes multiple fingerprint collecting units, and fingerprint collecting unit and sub-pixel group correspond, and sub-pixel group includes extremely A few sub-pixel unit, and the sub-pixel unit for including in different subpixel group is different.

Optionally, collimated light extraction structure is arranged between upper polarizing layer and cover board.The damage during light emission goes out can be reduced Consumption, and the diverging of light is reduced, improve the precision of fingerprint recognition.

Optionally, collimated light extraction structure is collimated light area source.

Optionally, along the thickness direction of liquid crystal display device, the projection of collimated light area source covers viewing area.It can be achieved complete Shield fingerprint recognition.

Optionally, collimated light extraction structure is optical waveguide layer, and optical waveguide layer is provided with the first diffraction grating far from the surface of cover board； Optical waveguide layer includes the firstth area, and the first diffraction grating is located at the firstth area；Liquid crystal display device further includes collimation radiant；Collimated light light Source is used to collimated light injecting optical waveguide layer, and collimated light is totally reflected in the firstth area；First diffraction grating is for making to be incident upon the The collimated light of one diffraction grating, 1 grade of diffraction light after diffraction occurs project optical waveguide layer；Collimation radiant is located at liquid crystal display device Non-display area, alternatively, collimation radiant be located at backlight module far from liquid crystal display die set side；Wherein, collimation radiant is Collimated light point light source or collimated ray light source.It is arranged by the way that radiant will be collimated in non-display area, light is carried out by optical waveguide layer Conduction and outgoing, so, the material of each structure of collimation radiant does not require, and can reduce production cost.

Optionally, direct light linear light source subject to radiant is collimated；Optical waveguide layer further includes the secondth area；Collimated ray light source is for penetrating The collimated light of second angle out, and inject the secondth area；Second jiao of the collimated light that secondth area is used to inject collimated ray light source Degree is adjusted to third angle and injects the firstth area.By the way that the secondth area is arranged, light path converting is carried out, collimation light light source can be reduced The requirement of position is set.

Optionally, direct light point light source subject to radiant is collimated；Optical waveguide layer further includes the secondth area and third area；Optical waveguide layer is separate The surface of cover board is additionally provided with the second diffraction grating；Second diffraction grating is located at third area；Collimated light point light source is for projecting the The collimated light of two angles, and inject the secondth area；The second angle tune for the collimated light that secondth area is used to inject collimated light point light source Whole to be third angle and inject third area, the collimated light of third angle after injecting third area in third area for being all-trans It penetrates；Second diffraction grating is used to make to be incident upon the collimated light of the second diffraction grating, and 1 grade of diffraction collimated light after diffraction occurs injects the One area；Wherein, collimated light point light source is arranged in optical waveguide layer far from cover board side.Collimation luminous point is set as by the way that radiant will be collimated Light source, and point light source is converted to by linear light source by the third area in optical waveguide layer, it is possible to reduce collimation radiant is in non-display area Accounting, can reduce the requirement of the integrated level to non-display area component.

Optionally, non-display area is located at the outside of viewing area；Secondth area and third area are respectively positioned on non-display area, and the firstth area is covered Lid viewing area.

Optionally, non-display area is located at the outside of viewing area；The profile of viewing area includes groove, and non-display area includes protrusion Region, raised zones and groove splice；Secondth area is located at raised zones, and the firstth area and third area are located at least in viewing area.

Optionally, non-display area includes transparent area and opaque area, and viewing area surrounds transparent area；Opaque area is located at display The outside in area；Secondth area is located at transparent area, and the firstth area and third area are located at least in viewing area.

Optionally, along first direction, third area is located at the side in the secondth area；In a second direction, the firstth area is located at third area Side；Wherein, the length and wide direction of first direction and second direction display panel each other.

Optionally, third area includes the first sub-district and the second sub-district；Along first direction, the first sub-district and the second sub-district difference Positioned at the two sides in the secondth area；In a second direction, the firstth area is located at the same side of the first sub-district, the second sub-district and the secondth area；Its In, the length and wide direction of first direction and second direction display panel each other.

Optionally, the firstth area extends to the edge of viewing area in a second direction.The area of fingerprint identification area can be increased.

Optionally, collimation radiant is arranged in backlight module far from liquid crystal display die set side；Liquid crystal display device also wraps Include optical path converter；Optical path converter is located at non-display area；Optical path converter is incident upon optical path converter for that will collimate radiant Collimated light inject optical waveguide layer.The back side that backlight module is set by that will collimate radiant, without occupying the face of non-display area Product can reduce the requirement to each component arrangement of liquid crystal display device, simplify preparation process.

Optionally, first is provided with along the direction of the thickness direction perpendicular to liquid crystal display device, liquid crystal display die set It is open, is provided with the second opening on backlight module, along the thickness direction of liquid crystal display device, the throwing of raised zones and the first opening The projection of shadow and the second opening is overlapped；Liquid crystal display device further includes advanced optics, advanced optics and collimated light light Source is arranged in the gap of the first opening and the second opening formation.Advanced optics can be made to protrude into liquid crystal display die set and back In optical mode group, the thickness of display device is reduced.

Optionally, is provided in each film layer between first substrate and the second substrate on the surface of display panel One vacancy section；The second vacancy section is provided on lower polarizing layer and/or lower polarizing layer；Third vacancy section is provided on backlight module； Transparent area, the first vacancy section, the second vacancy section and third vacancy section are overlapped；Liquid crystal display device further includes preposition optics device Part, advanced optics and collimation radiant are arranged at third vacancy section.Advanced optics can be made to protrude into backlight module, Reduce the thickness of display device.

Optionally, advanced optics include front camera, collimation radiant be arranged in the camera lens of front camera with In gap between liquid crystal display die set.The area occupied of collimation radiant can be reduced.

Optionally, the second vacancy section is filled with Optical transparent adhesive.By filling Optical transparent adhesive in upper and lower polarizing layer, one Aspect can reduce the refraction of light, on the other hand can reduce the deformation of the first substrate and the second substrate.

Optionally, liquid crystal display device further includes transparent adhesive tape filled layer, and transparent adhesive tape filled layer and optical waveguide layer same layer are arranged, thoroughly The thickness of gelatin filled layer is equal to the thickness of optical waveguide layer, and transparent adhesive tape filled layer and optical waveguide layer splice；Wherein, it is filled along liquid crystal display The thickness direction set, the projection of transparent adhesive tape filled layer and light transmission area overlapping.By the way that transparent adhesive tape filled layer is arranged, on the one hand can subtract The refraction of few light, on the other hand can play a supporting role.

Optionally, optical waveguide layer is provided with the first optical clear glue-line close to the surface of cover board, and the first optical clear glue-line is Planar.First optical clear glue-line plays the role of being bonded optical waveguide layer and upper polarizing layer, and sends out in optical waveguide layer for collimated light Raw total reflection offer condition, can simplify film layer structure.

Optionally, optical waveguide layer is provided with the first optical clear glue-line close to the surface of cover board, and the first optical clear glue-line is It is cyclic annular.First optical clear glue-line plays the role of being bonded optical waveguide layer and upper polarizing layer, and sends out in optical waveguide layer for collimated light Raw total reflection offer condition, can simplify film layer structure.

Optionally, optical waveguide layer is provided with the second optical clear glue-line, the second Optical transparent adhesive close to the surface of upper polarizing layer Layer is planar.Second optical clear glue-line plays the role of being bonded optical waveguide layer and lower polarizing layer, and is collimated light in optical waveguide layer Middle generation is totally reflected offer condition, can simplify film layer structure.

Optionally, optical waveguide layer is provided with the second optical clear glue-line, the second Optical transparent adhesive close to the surface of upper polarizing layer Layer is ring-type.Second optical clear glue-line plays the role of being bonded optical waveguide layer and lower polarizing layer, and is collimated light in optical waveguide layer Middle generation is totally reflected offer condition, can simplify film layer structure.

Optionally, collimated light is visible light, and the collimated light of first angle is for the separate liquid crystal display die set in cover board Surface is totally reflected.After the collimated light of first angle is totally reflected on the surface of the separate liquid crystal display die set of cover board, no Generation interference can be used up to display, and visible light source is more universal, cost is relatively low.

Detailed description of the invention

Fig. 1 is a kind of block schematic illustration of liquid crystal display device provided by the embodiments of the present application；

Fig. 2 a is a kind of structural schematic diagram of backlight module provided by the embodiments of the present application；

Fig. 2 b is the structural schematic diagram of another backlight module provided by the embodiments of the present application；

Fig. 3 a is a kind of schematic top plan view of liquid crystal display device provided by the embodiments of the present application；

Fig. 3 b be Fig. 3 a along O-O ' to a kind of sectional view；

A kind of Fig. 4 a schematic top plan view of display panel provided by the embodiments of the present application；

A kind of Fig. 4 b schematic side view of display panel provided by the embodiments of the present application；

Fig. 5 a is a kind of positional diagram of fingerprint collecting structure and black matrix provided by the embodiments of the present application；

Fig. 5 b is the positional diagram of another fingerprint collecting structure and black matrix provided by the embodiments of the present application；

Fig. 6 be Fig. 3 a along O-O ' to another sectional view；

Fig. 7 be Fig. 3 a along O-O ' to another sectional view；

Fig. 8 be Fig. 3 a along O-O ' to another sectional view；

Fig. 9 be Fig. 3 a along O-O ' to another sectional view；

Figure 10 be Fig. 3 a along O-O ' to another sectional view；

Figure 11 be Fig. 3 a along O-O ' to another sectional view；

Figure 12 be Fig. 3 a along O-O ' to another sectional view；

Figure 13 be Fig. 3 a along O-O ' to another sectional view；

Figure 14 is a kind of positional diagram of fingerprint collecting unit and pixel unit group provided by the embodiments of the present application；

Figure 15 is a kind of structural schematic diagram of optical waveguide layer provided by the embodiments of the present application；

Figure 16 is a kind of schematic side view of liquid crystal display device provided by the embodiments of the present application；

Figure 17 is the schematic side view of another liquid crystal display device provided by the embodiments of the present application；

Figure 18 is a kind of first optical clear glue-line provided by the embodiments of the present application, optical waveguide layer, the second optical clear glue-line The structural schematic diagram of three；

Figure 19 is another first optical clear glue-line provided by the embodiments of the present application, optical waveguide layer, the second Optical transparent adhesive The structural schematic diagram of layer three；

Figure 20 is another the first optical clear glue-line, optical waveguide layer, second Optical transparent adhesive provided by the embodiments of the present application The structural schematic diagram of layer three；

Figure 21 is another the first optical clear glue-line, optical waveguide layer, second Optical transparent adhesive provided by the embodiments of the present application The structural schematic diagram of layer three；

Figure 22 is the schematic side view of another liquid crystal display device provided by the embodiments of the present application；

Figure 23 is a kind of relation schematic diagram of light guide plate and collimation radiant provided by the embodiments of the present application；

Figure 24 be Figure 23 along A-A ' to sectional view；

Figure 25 is the schematic side view of another liquid crystal display device provided by the embodiments of the present application；

Figure 26 is the relation schematic diagram of another light guide plate and collimation radiant provided by the embodiments of the present application；

Figure 27 be Figure 26 along B-B ' to sectional view；

Figure 28 is a kind of structural schematic diagram of diffraction grating provided by the embodiments of the present application；

Figure 29 a is the positional relationship signal of a kind of optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 29 b is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 30 a is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 30 b is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 31 is the schematic top plan view of another liquid crystal display device provided by the embodiments of the present application；

Figure 32 be Figure 31 along C-C ' to sectional view；

Figure 33 is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 34 is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 35 is the schematic top plan view of another liquid crystal display device provided by the embodiments of the present application；

Figure 36 be Figure 35 along D-D ' to a kind of sectional view；

Figure 37 be Figure 35 along D-D ' to another sectional view；

Figure 38 be Figure 35 along D-D ' to another sectional view；

Figure 39 is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 40 is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure；

Figure 41 is the positional relationship signal of another optical waveguide layer provided by the embodiments of the present application and viewing area and non-display area Figure.

Appended drawing reference:

1- frame；2- cover board；3- liquid crystal display die set；30- display panel；300- pixel；The first color sub-pixels of 310- Unit；320- the second color sub-pixels unit；330- third color sub-pixels unit；301- sub-pixel group；31- array substrate； The first substrate of 311-；313- pixel electrode；314- public electrode；The first insulating layer of 315-；316- second insulating layer；32- is opposed Substrate；The second substrate of 321-；322- black matrix；The first shading strip of 3221-；The second shading strip of 3222-；323- chromatic filter layer； 33- liquid crystal layer；The upper polarizing layer of 34-；Polarizing layer under 35-；36- first is open；4- backlight module；41- light source；42- reflector plate； 43- light guide plate；44- optical diaphragm；45- second is open；5- circuit board；6- collimated light extraction structure；60- optical waveguide layer；61- first Area；The secondth area 62-；63- third area；The first sub-district of 631-；The second sub-district of 632-；The first diffraction grating of 64-；The second diffraction of 65- Grating；7- fingerprint collecting structure；70- fingerprint collecting unit；8- collimates radiant；81- collimated ray light source；82- collimates luminous point Light source；9- optical path converter；11- the first optical clear glue-line；12- the second optical clear glue-line；The viewing area 10-；20- is non-display Area；21- raised zones；22- transparent area；The opaque area 23-；13- advanced optics；The first vacancy section 14-；15- second is engraved Dead zone；151- Optical transparent adhesive；16- third vacancy section；17- transparent adhesive tape filled layer.

Specific embodiment

Unless otherwise defined, technical term or scientific term used in this application should be those skilled in the art and are managed The ordinary meaning of solution.Term " first " used in present specification and claims, " second ", " third " and class As word be not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.It limits as a result, There is the feature of " first ", " second ", " third " to can explicitly or implicitly include one or more of the features surely.At this In the description for applying for embodiment, unless otherwise indicated, the meaning of " plurality " is two or more.

The directional terminologies such as "left", "right", "upper" and "lower" are placed relative to the liquid crystal display device signal in attached drawing Orientation define, it should be understood that, these directional terminologies are opposite concepts, they be used for relative to description and clear Clearly, it can correspondingly be changed according to the variation in the orientation that liquid crystal display device is placed.

With the development of display technology, LCD technology has been widely used in various display equipment.Such as Fig. 1 institute Show, the primary structure of liquid crystal display device include frame 1, cover board 2, liquid crystal display die set 3, backlight module 4, circuit board 5 and Other electronic components including camera etc..Liquid crystal display die set 3 includes display panel 30, setting in the close lid of display panel 30 The upper polarizing layer 34 of 2 side of plate and display panel 30 is set close to the lower polarizing layer 35 of 4 side of backlight module.Display panel 30 include array substrate 31, counter substrate 32, the liquid crystal layer 33 being set between array substrate 31 and counter substrate 32, array base Plate 31 and counter substrate 32 pass through sealant to being combined, to liquid crystal layer 33 is limited in the region that sealant surrounds. Wherein, when chromatic filter layer is set in counter substrate 32, counter substrate 32 is color membrane substrates.

The longitudinal section of frame 1 is U-shaped, liquid crystal display die set 3, backlight module 4, circuit board 5 and including camera etc. Other electronic components are set in frame 1, and backlight module 4 is located at the lower section of liquid crystal display die set 3, and circuit board 5 is located at backlight mould Between group 4 and frame 1, cover board 2 is located at side of the liquid crystal display die set 3 far from backlight module 4.

Cover board 2, such as can be transparent glass.

As shown in Figure 2 a and 2 b, backlight module 4 includes light source 41, reflector plate 42, light guide plate 43 and is set to leaded light The optical diaphragm 44 of 43 light emission side of plate.Wherein, optical diaphragm 44 may include diffusion sheet and/or bright enhancement film etc..In optical diaphragm In the case that 44 include diffusion sheet and bright enhancement film, diffusion sheet is set to the light emission side of light guide plate 43, and bright enhancement film is set to diffusion sheet Separate light guide plate 43 side.Bright enhancement film may include prism film (brightness enhancement film, BEF) and Reflection-type polarisation bright enhancement film (dual brightness enhancement film, DBEF), the two can be used in combination.

As shown in Figure 2 a, light source 41 may be disposed at the side of light guide plate 43, and in the case, which enters for side Formula backlight module.As shown in Figure 2 b, light source 41 also can be set in the side of the separate light emission side of light guide plate 43, in this situation Under, which is down straight aphototropism mode set.Light source 41 for example can be light emitting diode (Light-Emitting Diode, LED).The structure of backlight module 4 in Fig. 2 a and Fig. 2 b is only to illustrate, and does not do any restriction.

The displaying principle of the liquid crystal display device of Fig. 1 are as follows: backlight module 4 issues white light, is formed with by lower polarizing layer 35 The white polarised light of particular polarization injects array substrate 31, then filters to be formed by the chromatic filter layer on color membrane substrates The polarised light of red-green-blue.When the polarization direction of the polarised light is vertical with the polarization direction of upper polarizing layer 34, polarised light It cannot pass through polarizing layer 34, dull thread is emitted at this time；When the polarization direction of the polarised light and the polarization direction of upper polarizing layer 34 When parallel, polarised light can pass through upper polarizing layer 34, and the light intensity of emergent light is most strong at this time.Since liquid crystal molecule has rotation to polarised light Light characteristic, specific molecular arrangement direction can make the polarization direction of the polarised light change, when the arragement direction of liquid crystal molecule When being rotated by the electric field controls of pixel electrode and public electrode, also changed by the direction of polarized light of liquid crystal molecule, So as to which the number that polarised light is emitted from upper polarizing layer 34 controlled.When pixel electrode and public electrode are according to each self-electrode of application On electric signal regular control liquid crystal molecule rotation when, the light of RGB sub-pixel regular will penetrate upper polarizing layer 34, ultimately form color image.Above-mentioned paths sequence are as follows: backlight module 4 projects, and successively penetrates lower polarizing layer 35, array Substrate 31, liquid crystal layer 33, counter substrate 32, upper polarizing layer 34 project cover board 2.

Embodiments herein provides a kind of liquid crystal display device, as shown in Figure 3a and Figure 3b shows, including backlight module 4, liquid Brilliant display module 3 and cover board 2, liquid crystal display die set 3 includes display panel 30, upper polarizing layer 34 and lower polarizing layer 35, lower inclined Photosphere 35 is close to backlight module 4, and upper polarizing layer 34 is close to cover board 2.

Display panel 30 can for FFS (Fringe Field Switching, fringe field switching) type liquid crystal display panel, IPS (In Plane Switch, transverse electric field effect) type liquid crystal display panel, TN (Twist Nematic, twisted-nematic) type Any one of liquid crystal display panel.

For TN type liquid crystal display panel, public electrode is arranged in counter substrate 32, and pixel electrode is arranged in array base On plate 31, without limitation to the shape of public electrode and pixel electrode.

For FFS type liquid crystal display panel, public electrode and pixel electrode are arranged in array substrate 31, public electrode With the different layer setting of pixel electrode, the electrode positioned at upper layer includes multiple strip electrodes, and the electrode positioned at lower layer includes multiple bar shapeds Electrode is plate shaped.For example, the electrode comprising multiple strip electrodes for being located at upper layer is pixel electrode, positioned at the plate of lower layer Shape electrode is public electrode.

For IPS type liquid crystal display panel, public electrode and pixel electrode are arranged in array substrate 31, public electrode It is arranged with pixel electrode same layer, public electrode includes multiple first strip electrodes, and pixel electrode includes multiple second strip electrodes, First strip electrode and the setting of the second bar shaped electrode gap.

Display panel 30 includes array substrate 31, counter substrate 32, is set between array substrate 31 and counter substrate 32 Liquid crystal layer 33, array substrate 31 and counter substrate 32 by sealant to being combined, so that liquid crystal layer 33 is limited to envelope In the region that frame glue surrounds.

As shown in fig. 4 a, display panel 30 includes multiple pixels 300, and each pixel includes multiple sub-pixel units, this is more A sub-pixel unit includes the first color sub-pixels unit 310, the second color sub-pixels unit 320 and third color sub-pixels list Member 330, display panel 30 be provided with pixel 300 region be liquid crystal display device viewing area 10.

Illustrated by taking FFS type liquid crystal display panel as an example, as shown in Figure 4 b, each sub-pixel unit includes being located at battle array TFT (Thin Film Transistor, thin film transistor (TFT)) and pixel electrode 313 on first substrate 311 of column substrate 31, as Plain electrode 313 is electrically connected with the drain electrode (or source electrode) of TFT.On this basis, public electrode is additionally provided in array substrate 31 314, wherein power for convenience of to public electrode 314, the public electrode 314 in all sub-pixel units can be linked together. TFT, pixel electrode 313, public electrode 314 are all set in the first substrate 311 towards the side of counter substrate 32.

Wherein, Fig. 4 b is illustrated between TFT and pixel electrode 313 with public electrode 314, in the case, public It is isolated between common electrode 314 and pixel electrode 313 by the first insulating layer 315.In addition, can also between TFT and public electrode 314 Second insulating layer 316 is set, this is based on, pixel electrode 313 is by being located at the first insulating layer 315, public electrode 314 and second Channel on insulating layer 316 is electrically connected with the drain electrode of TFT.First insulating layer 315 and the equal flood of second insulating layer 316 are layed in and set It is equipped with the region of pixel 300, it is only necessary to first insulating layer 315 in the region is removed by the methods of aperture in the region of needs, or, The second insulating layer 316 in the region is removed, or, removing the second insulating layer of first insulating layer 315 and the region in the region 316。

Public electrode 314 may also set up in pixel electrode 313 far from the side TFT, in the case, 314 He of public electrode It can be equally isolated by the first insulating layer 315 between pixel electrode 313, public electrode 314 includes multiple strip electrodes.

Each sub-pixel unit further includes the chromatic filter layer 323 on the second substrate 321 of counter substrate 32 (color filter, CF), in the case, counter substrate 32 are color membrane substrates.Wherein, it is located at the first color sub-pixels unit 310 chromatic filter layer 323 is the first color chromatic filter layer, positioned at the chromatic filter layer of the second color sub-pixels unit 320 323 be the second color chromatic filter layer, and the chromatic filter layer 323 positioned at third color sub-pixels unit 330 is that third color is color Color filtering optical layer.Exemplary, the first color is red, and the second color is green, and third color is blue.

Either the first color chromatic filter layer, the second color chromatic filter layer or third color chromatic filter layer, Material includes the material that high molecular material and organic dyestuff mix.First color chromatic filter layer, the second color are colored The difference of this trilaminate material of filter layer or third color chromatic filter layer is, the difference of organic dyestuff.

In addition, crosstalk occurs for the primary lights for avoiding adjacent subpixels unit from issuing, counter substrate 32 is additionally provided with black square 322 (black matrix, BM) of battle array, black matrix 322 is between adjacent subpixels unit.Chromatic filter layer 323, black matrix 322 are all set in counter substrate 32 towards the side of array substrate 31.

The lower polarizing layer 35 of liquid crystal display device can be traditional polaroid, alternatively, can be wire grid polarization layer (grid Polarizer, GP).

Instantly when polarizing layer 35 is wire grid polarization layer, the material of wire grid polarization layer can be metal.Wire grid polarization layer can be adopted It is directly made on the first substrate 311 of modes such as sputtering, nano impression, photoetching.The material of wire grid polarization layer includes but unlimited In aluminium (Al), copper (Cu), silver (Ag), gold (Au) and chromium (Cr) etc..

Instantly when polarizing layer 35 is wire grid polarization layer, the wire grid polarization layer may be formed at the first substrate 311 towards opposed The side of substrate 32 also may be formed at the side of the separate counter substrate 32 of the first substrate 311.Instantly polarizing layer 35 is traditional When polaroid, lower polarizing layer 35 is formed in the side of the separate counter substrate 32 of the first substrate 311.The embodiment of the present application is following Illustrated the side that polarizing layer 35 is formed in the separate counter substrate 32 of the first substrate 311.

The upper polarizing layer 34 of liquid crystal display device can be traditional polaroid, alternatively, can be wire grid polarization layer.

When upper polarizing layer 34 is wire grid polarization layer, the wire grid polarization layer may be formed at the second substrate 321 towards array The side of substrate 31 also may be formed at the side of the separate array substrate 31 of the second substrate 321.When upper polarizing layer 34 is traditional When polaroid, upper polarizing layer 34 is formed in the side of the separate array substrate 31 of the second substrate 321.The embodiment of the present application more than Illustrated the side that polarizing layer 34 is formed in the separate array substrate 31 of the second substrate 321.

On this basis, liquid crystal display device further include: collimated light extraction structure 6 and fingerprint collecting structure 7；Collimated light goes out Structure 6 and fingerprint collecting structure 7 are penetrated between lower polarizing layer 35 and cover board 2, fingerprint collecting structure 7 is located at collimated light outgoing knot Structure 6 is far from 2 side of cover board.

The light-emitting surface of collimated light extraction structure 6 is located at least in liquid crystal display device towards cover board 2, collimated light extraction structure 6 Viewing area 10, and collimated light extraction structure 6 is located at the partial light permeability of viewing area 10.

It wherein, can be visible light from the collimated light (fingerprint recognition is used up) that collimated light extraction structure 6 projects, or Black light.

In the case where collimated light is visible light, is used up in order to avoid fingerprint recognition and generation interference is used up to display, influenced Display effect.The angle of the collimated light projected from collimated light extraction structure 6 is first angle, and the collimated light of first angle is used for It is totally reflected on the surface of the separate liquid crystal display die set 3 of cover board 2.

Fingerprint collecting structure 7 is used to receive the reflected light of the collimated light of the first angle of the injection of collimated light extraction structure 6, and Carry out fingerprint collecting.

In some embodiments, as shown in Figure 5 a, orthographic projection and sub-pixel unit of the fingerprint collecting structure 7 on cover board 2 Orthographic projection overlapping on cover board 2.

It is understood that in this case, blocking in order not to use up generation to display, fingerprint collecting structure 7 is being covered Orthographic projection on plate 2 partial light permeability Chong Die with orthographic projection of the sub-pixel unit on cover board 2.It is set between adjacent subpixels unit It is equipped with black matrix 322, fingerprint collecting structure 7 is Chong Die with orthographic projection of the black matrix 322 on cover board 2 in the orthographic projection on cover board 2 Part can be opaque.

Although fingerprint collecting structure 7 is Chong Die with orthographic projection of the sub-pixel unit on cover board 2 in the orthographic projection on cover board 2 Partial light permeability, but still will affect the transmitance that display is used up.In some embodiments, as shown in Figure 5 b, along liquid crystal display device Thickness direction, black matrix 322 projection covering fingerprint collecting structure 7 projection.

That is, fingerprint collecting structure 7 is in the orthographic projection of orthographic projection and sub-pixel unit on cover board 2 on cover board 2 The part not overlapped.

As shown in Figure 5 b, black matrix 322 includes multiple first shading strips 3221 for extending in a first direction and along second party To multiple second shading strips 3222 of extension, the first shading strip 3221 and the second shading strip 3222 are respectively positioned on adjacent subpixels unit Between.First direction and second direction are respectively the line direction and column direction of sub-pixel unit arrangement, for example, first direction is water Square to second direction is vertical direction.

The lower section of collimated light extraction structure 6 is arranged in fingerprint collecting structure 7, about the setting position of fingerprint collecting structure 7, In order to improve fingerprint collecting structure 7 to the collection effect of reflected light, light loss is reduced to the greatest extent, as shown in Figure 3b, optionally, fingerprint Acquisition structure 7 can be set between upper polarizing layer 34 and collimated light extraction structure 6.

As shown in fig. 6, optional, fingerprint collecting structure 7 is integrated in display panel 30.

Fingerprint collecting structure 7 is integrated in display panel 30, it can be understood as display panel 30 includes fingerprint collecting structure 7.That is, forming fingerprint collecting structure 7 during preparing display panel 30.It is exemplary, it is certain in fingerprint collecting structure 7 Film layer can also independently form line acquisition knot with certain film layers in display panel 30 by being formed with a patterning processes Each film layer in structure.

In some embodiments, as Figure 6-Figure 8, fingerprint collecting structure 7 is integrated in array substrate 31.

Based on this, optionally, as shown in fig. 6, fingerprint collecting structure 7 is arranged in the first substrate 311 close to lower polarizing layer 35 Surface.

Optionally, as shown in fig. 7, fingerprint collecting structure 7 is arranged in the first substrate 311 close to 33 side of liquid crystal layer.

Fingerprint collecting structure 7 for example may include photoelectric converter and detection circuit, the detection electricity in fingerprint collecting structure 7 Road can with the TFT in array substrate 31 synchronize formed.

Optionally, as shown in figure 8, fingerprint collecting structure 7 is arranged in pixel electrode 313 close to 33 side of liquid crystal layer.

In some embodiments, as Figure 9-Figure 11, fingerprint collecting structure 7 is integrated in counter substrate 32.

Based on this, in order to reduce filtering of the black matrix 322 to the light for reflexing to fingerprint collecting structure 7, optionally, such as scheme Shown in 9, the second substrate 321 is arranged in close to the surface of upper polarizing layer 34 in fingerprint collecting structure 7.

In order to simplify preparation on the basis of reducing filtering of the black matrix 322 to the light for reflexing to fingerprint collecting structure 7 Technique, optionally, as shown in Figure 10, fingerprint collecting structure 7 is arranged in black matrix 322 far from 31 side of array substrate.

That is, fingerprint collecting structure 7 is arranged between the second substrate 321 and black matrix 322.

Optionally, as shown in figure 11, fingerprint collecting structure 7 is arranged in black matrix 322 close to 31 side of array substrate.

Although being reflected it is understood that the lower section of black matrix 322 is arranged in fingerprint collecting structure 7 by cover board 2 Collimated light can be by sub-pixel unit region directive fingerprint collecting structure 7, to ensure that fingerprint collecting structure 7 realizes fingerprint Acquire function.

For collimated light extraction structure 6, collimated light extraction structure 6 can be only located at viewing area 10, can also be by showing Show that area 10 extends to non-display area 20, but collimated light extraction structure 6 blocks backlight in order to prevent, collimated light extraction structure 6 The necessary light transmission of each tunic material positioned at the part of viewing area 10, the part of viewing area 10 is located to avoid collimated light extraction structure 6 Influence display.

Wherein, in order to prevent backlight module 4 be aligned direct light extraction structure 6 project collimated light block and upper polarisation The common filtering of layer 34 and lower polarizing layer 35 alignment direct light, leads to not light out, and collimated light extraction structure 6 can be set lower inclined Any position between photosphere 35 and cover board 2, the embodiment of the present application are not construed as limiting this.

On this basis, in order to reduce the loss during light emission goes out, and the diverging of light is reduced, improves fingerprint recognition Precision, collimated light extraction structure 6 can be made close as far as possible apart from the distance of cover board 2.Optionally, the setting of collimated light extraction structure 6 exists Between upper polarizing layer 34 and cover board 2.

It is understood that as shown in Figure 3b, when collimated light extraction structure 6 and fingerprint collecting structure 7 be arranged at it is upper partially When between photosphere 34 and cover board 2, fingerprint collecting structure 7 is still located at the lower section of collimated light extraction structure 6.

Due to collimated light extraction structure 6 project first angle collimated light directive cover board 2, in first angle In the case that the wavelength of collimated light is black light wave band, the collimated light of first angle can project cover board 2, can also be in cover board The surface of 2 separate liquid crystal display die set 3 is totally reflected, no matter which kind of situation, will not influence normal display.But first In the case that the wavelength of the collimated light of angle is visible light wave range, to aobvious after the collimated light injection cover board 2 to avoid first angle Show and use up generation interference, and influence normal display, is in the wavelength of the collimated light for the first angle that collimated light extraction structure 6 projects In the case where visible light, the collimated light of first angle is used to be all-trans on the surface of the separate liquid crystal display die set 3 of cover board 2 It penetrates, so that it is guaranteed that user does not see the light (the part light is used for fingerprint recognition) that collimated light extraction structure 6 projects, does not influence terminal The normal display of equipment.

It is understood that the refractive index due to air is less than the refractive index of cover board 2, as long as setting collimated light The angle for the collimated light that extraction structure 6 projects, i.e. first angle meet the condition of total reflection, what collimated light extraction structure 6 projected Collimated light can be totally reflected on the surface of the separate liquid crystal display die set 3 of cover board 2.

When finger is placed on cover board 2, the collimated light of first angle is through the surface of the separate liquid crystal display die set 3 of cover board 2 Reflection, directive fingerprint collecting structure 7, due to different with the light intensity of reflected light at crestal line at finger valley line, fingerprint collecting knot Structure 7 can complete fingerprint collecting work according to the reflected light received.

As shown in Figure 3b, collimated light extraction structure 6 can cover entire viewing area 10, and liquid crystal display device can be realized at this time Full frame preposition fingerprint recognition.As shown in Figure 12 and Figure 13, collimated light extraction structure 6 can be set in viewing area 10, but not cloth Full viewing area 10, liquid crystal display device can realize the preposition fingerprint recognition in partial region at this time.

It is understood that fingerprint collecting structure 7 is used to receive the reflected light of the light of the injection of collimated light extraction structure 6, because This, the relative positional relationship of fingerprint collecting structure 7 and collimated light extraction structure 6, need to meet can receive collimated light outgoing knot The reflected light for the light that structure 6 projects, the collimated light that specifically setting position and collimated light extraction structure 6 project of fingerprint collecting structure 7 First angle it is related, two parameters cooperate.

Liquid crystal display device provided by the present application realizes the principle of fingerprint recognition are as follows: as shown in figure 12, fingerprint includes valley line And crestal line, when fingerprint recognition, finger is placed on cover board 2, and the crestal line in fingerprint can be contacted with cover board 2, and valley line and cover board 2 it Between have air.

In the case where the wavelength for the collimated light that collimated light extraction structure 6 projects is visible light, collimated light is from 2 directive of cover board It can be totally reflected when air.Therefore the collimated light for the first angle that collimated light extraction structure 6 projects is irradiated to fingerprint valley institute At position, due to there is air between valley line and cover board 2, the collimated light of first angle can occur total reflection and be reflected back, shine It is mapped in fingerprint collecting structure 7.Since the refractive index of finger and glass is close, the first of the injection of collimated light extraction structure 6 When the collimated light of angle is irradiated to crestal line position, the collimated light of first angle can inject finger, and refraction occurs without quilt Total reflection.Therefore, fingerprint collecting structure 7 obtains the valley line and ridge of finger print according to the light and shade situation of the reflected light received Line distribution situation, wherein the bright place of light (electric signal is strong) indicates the position of paddy, and light dark place (electric signal is weak) indicates the position of ridge It sets, to realize fingerprint recognition.

In the case where the wavelength for the collimated light that collimated light extraction structure 6 projects is black light, collimated light is penetrated from cover board 2 It can be totally reflected, can not also be totally reflected when to air.It is all-trans when if collimated light is from 2 directive air of cover board It is identical for the principle of visible light to penetrate the wavelength of the collimated light projected with above-mentioned collimated light extraction structure 6, details are not described herein again.It is quasi- It is not totally reflected when if direct light is from 2 directive air of cover board, although collimated light reflects at valley line and Location of ridge axis, Since air is different with the refractive index of finger, so that after collimated light reflects at crestal line after reflecting at valley line with collimated light, two The intensity of reflected light is different on the reflected light path of person.Therefore, fingerprint collecting structure 7 is according to the light and shade feelings of the reflected light received Condition obtains the valley line and crestal line distribution situation of fingerprint, to realize fingerprint recognition.

Above-mentioned liquid crystal display device by the way that the collimated light extraction structure 6 of light transmission is arranged in liquid crystal display device, and makes The light-emitting surface of collimated light extraction structure 6 provides fingerprint recognition towards cover board 2 to realize in the case where not influencing normally to show It uses up.On this basis, fingerprint collecting structure 7 is mainly disposed to 322 region of black matrix, extends to 322 institute of black matrix Partial light permeability other than region, and fingerprint collecting structure 7 receives the collimation for the first angle that collimated light extraction structure 6 projects The reflected light of light, so that fingerprint collecting structure 7, which while not reducing pixel aperture ratio, is realized, shields lower fingerprint recognition.Without inciting somebody to action The back side or side of liquid crystal display device is arranged in fingerprint collecting structure 7, has ensured the integrality of airframe structure, brings preferably Experience.

Optionally, as shown in figure 14, fingerprint collecting structure 7 includes multiple fingerprint collecting units 70, fingerprint collecting unit 70 It is corresponded with sub-pixel group 301, sub-pixel group 301 includes at least one sub-pixel unit, and is wrapped in different subpixel group 301 The sub-pixel unit included is different.

Sub-pixel unit for example can be the first color sub-pixels unit 310 or the second color sub-pixels unit 320 or the Three color sub-pixels units 330, it is exemplary, sub-pixel unit for example can for for glowing red sub-pixel unit R or Green sub-pixels unit G for green light or the blue subpixels unit B for blue light-emitting.

One sub-pixel group 301 includes at least one sub-pixel unit, and same sub-pixel unit will not be under the jurisdiction of two Sub-pixel group 301.The sub-pixel unit quantity that multiple sub-pixel groups 301 in display panel 30 include can be identical, can also be with It is different.

It is understood that the projection of black matrix 322 covers fingerprint collecting due to the thickness direction along liquid crystal display device The projection of structure 7, therefore, fingerprint collecting unit 70 are arranged in 322 region of black matrix, and sub-pixel unit institute will not be arranged in In region.The corresponding sub-pixel group 301 of a fingerprint collecting unit 70 refers to that fingerprint collecting unit 70 is arranged in herein Above or below the black matrix 322 of 301 region of sub-pixel group.

Optionally, collimated light extraction structure 6 is collimated light area source.

In order to realize full frame fingerprint recognition, in some embodiments, along the thickness direction of liquid crystal display device, smooth surface is collimated The projection of light source covers viewing area.

In some embodiments, collimated light extraction structure 6 is optical waveguide layer 60, and as shown in figure 15, optical waveguide layer 60 is far from cover board 2 Surface be provided with the first diffraction grating 64；Optical waveguide layer 60 includes the first area 61, and the first diffraction grating 64 is located at the first area 61.

As shown in figure 16, liquid crystal display device further includes collimation radiant 8；Collimation radiant 8 is for injecting collimated light Optical waveguide layer 60, collimated light are totally reflected in the first area 61；First diffraction grating 64 is for making to be incident upon the first diffraction grating 64 Collimated light, occur diffraction after 1 grade of diffraction light project optical waveguide layer 60.

Optionally, as shown in figure 16, it along the thickness direction of liquid crystal display device, collimates radiant 8 and is located at liquid crystal display dress The non-display area 20 set.

First area 61 can for example be located at viewing area 10, be also extend to non-display area 20, Figure 16 is prolonged with the first area 61 Non-display area 20 is extended to, the light that collimation radiant 8 projects is illustrated for being emitted directly toward the first area 61.

Wherein, collimation radiant 8 can be collimated light point light source 82, or collimated ray light source 81, collimated light light Source 8 for example can be laser.

It is understood that if collimation radiant 8 project collimated light be emitted directly toward the first area 61 of optical waveguide layer 60 after, First area 61 can be totally reflected, then the collimated light for collimating the injection of radiant 8 can be emitted directly toward the firstth area of optical waveguide layer 60 61, the first area 61 can also be injected after other areas of optical waveguide layer 60 carry out angular transition.If collimating the standard that radiant 8 projects It after direct light is emitted directly toward the first area 61 of optical waveguide layer 60, cannot be totally reflected in the first area 61, then collimate the injection of radiant 8 Collimated light can inject the first area 61 after other areas of optical waveguide layer 60 carry out angular transition.No matter which kind of situation, such as Figure 15 It is shown, the angle of the collimated light in the first area 61 is injected, needs to be totally reflected in the first area 61, can be carried out in the first area 61 The conduction of light.

The refractive index of the floor structure of two sides is less than the refractive index of optical waveguide layer 60, example up and down at first area 61 of optical waveguide layer 60 , optical waveguide layer 60 is arranged between cover board 2 and upper polarizing layer 34, and the floor structure of about 61 two sides of the firstth area for example can be glue Or air, the material in the first area 61 for example can be carbonic ester (poly carbonate, PC), polymethyl methacrylate (polymethyl methacrylate, PMMA), dimethyl silicone polymer (polydimethyl siloxane, PDMS) or glass Glass.

First diffraction grating 64 is located at the first area 61 and according to the characteristic of diffraction grating, is incident upon diffraction grating as shown in figure 15 Light 0 grade of diffraction light shooting angle a it is identical as the angle a of incident light, the shooting angle b of 1 grade of diffraction light is less than incidence The angle a of light, and 0 grade of diffraction light carries most energy in incident ray, 1 grade of diffraction light carries in incident ray Most energy in dump energy.Therefore, when the collimated light in the first area 61 of injection is incident upon the first diffraction grating 64,0 grade is spread out It penetrates light to be still totally reflected in the first area 61, carries out the conduction of light.And 1 grade of diffraction grating is since light angle changes, no The condition for meeting total reflection, can project the first area 61, directive cover board 2 is used up as fingerprint collecting.It follows that optical waveguide layer 60 The first area 61 be not only able to achieve light conduction, but also be able to achieve light injection.

It is understood that in the case where collimating the wavelength for the collimated light that radiant 8 projects is visible light wave range, collimation The shooting angle b that 1 grade of diffraction light after diffraction occurs on the first diffraction grating 64 for light should be above-mentioned first angle, so that 1 grade Diffraction light is totally reflected on the surface of the separate liquid crystal display die set 3 of cover board 2.

Collimation radiant 8 is used cooperatively with optical waveguide layer 60, collimation radiant 8 provides linear light source or point light source, by leading Photosphere 60 carries out the conduction and outgoing of light, to achieve the effect that be similar to a collimated light area source, provides the finger of large area Line identification is used up.In addition, will not have an impact, can reduce pair to display by that will collimate the setting of radiant 8 in non-display area 20 Collimate the requirement of radiant 8.

Optionally, as shown in figure 17, collimation radiant 8 can also be located at backlight module 4 far from liquid crystal display die set 3 one Side.

No matter radiant 8 setting is collimated wherein, and the collimated light that collimation radiant 8 projects needs energy directive optical waveguide layer 60, can To be to be emitted directly toward optical waveguide layer 60, it is also possible to indirect directive optical waveguide layer 60.

In some embodiments, as shown in figure 17, collimation radiant 8 is arranged in backlight module 4 far from liquid crystal display die set 3 Side；Liquid crystal display device further includes optical path converter 9；Optical path converter 9 is located at non-display area 20；Optical path converter 9 is used for The collimated light that collimation radiant 8 is incident upon optical path converter 9 is injected into optical waveguide layer 60.

The setting of radiant 8 is collimated in backlight module 4 far from 3 side of liquid crystal display die set, backlight module 4 will not be issued Light blocks, and therefore, collimation radiant 8 can be located at viewing area 10, can also be located at non-display area 20.

The back side that backlight module 4 is arranged in by that will collimate radiant 8 can be dropped without occupying the area of non-display area 20 The low requirement to each component arrangement of liquid crystal display device simplifies preparation process.

Optionally, optical waveguide layer 60 is arranged between cover board 2 and upper polaroid 34, as shown in Figure 18 and Figure 19, optical waveguide layer 60 The surface of cover board 2 is provided with the first optical clear glue-line 11, the first optical clear glue-line 11 is planar.

Optionally, optical waveguide layer 60 is arranged between cover board 2 and upper polaroid 34, as shown in Figure 20 and Figure 21, optical waveguide layer 60 The surface of cover board 2 is provided with the first optical clear glue-line 11, the first optical clear glue-line 11 is ring-type.

Optionally, optical waveguide layer 60 is arranged between cover board 2 and upper polaroid 34, as illustrated in figures 19 and 20, optical waveguide layer 60 The surface of upper polarizing layer 34 is provided with the second optical clear glue-line 12, the second optical clear glue-line 12 is planar.

Optionally, optical waveguide layer 60 is arranged between cover board 2 and upper polaroid 34, as shown in figure 18 and figure, optical waveguide layer 60 The surface of upper polarizing layer 34 is provided with the second optical clear glue-line 12, the second optical clear glue-line 12 is ring-type.

It should be noted that in the case where the first optical clear glue-line 11 is planar, the layer structure of 60 upside of optical waveguide layer For Optical transparent adhesive；In the case where the first optical clear glue-line 11 is cricoid situation, 60 upside of optical waveguide layer is by cyclic annular first optical lens The region that gelatin layer 11 surrounds is air.Similarly, in the case where the second optical clear glue-line 12 is planar, 60 downside of optical waveguide layer Layer structure be Optical transparent adhesive；In the case where the second optical clear glue-line 12 is cricoid situation, the downside of optical waveguide layer 60 is by cyclic annular the The region that two optical clear glue-lines 12 surround is air.

Optionally, optical waveguide layer 60 is Nian Jie with cover board 2 by the first optical clear glue-line 11.

First optical clear glue-line 11 is for being also used to be bonded while guaranteeing that light is totally reflected in optical waveguide layer 60 Encapsulation cover plate 2 keeps liquid crystal display device lightening it is not necessary that glue-line is separately provided.

Optionally, optical waveguide layer 60 is Nian Jie with upper polarizing layer 34 by the second optical clear glue-line 12.

Second optical clear glue-line 12 is for being also used to be bonded while guaranteeing that light is totally reflected in optical waveguide layer 60 Upper polarizing layer 34 and optical waveguide layer 60 keep liquid crystal display device lightening it is not necessary that glue-line is separately provided.

Hereinafter, being illustrated with multiple examples to liquid crystal display device provided by the present application.

Example one

As shown in figure 22, liquid crystal display device includes backlight module 4, liquid crystal display die set 3 and cover board 2, liquid crystal display Mould group 3 includes display panel 30, upper polarizing layer 34 and lower polarizing layer 35, and lower polarizing layer 35 is close to backlight module 4, upper polarizing layer 34 Close to cover board 2.

Liquid crystal display device further include: optical waveguide layer 60, fingerprint collecting structure 7, collimated ray light source 81, the first optical clear Glue-line 11 and the second optical clear glue-line 12.

Fingerprint collecting structure 7 is used to receive the reflected light of the light of the injection of optical waveguide layer 60, and carries out fingerprint collecting；Fingerprint collecting Structure 7 is located at black matrix 322 close to 321 side of the second substrate, and along the thickness direction of liquid crystal display device, black matrix 322 The projection of projection covering fingerprint collecting structure 7.

Between lower polarizing layer 35 and cover board 2, fingerprint collecting structure 7, which is located at, to be led for optical waveguide layer 60 and fingerprint collecting structure 7 Photosphere 60 is far from 2 side of cover board.

Optical waveguide layer 60 is between upper polarizing layer 34 and cover board 2, and the light-emitting surface of optical waveguide layer 60 is towards cover board 2；Such as Figure 23 and Shown in Figure 24, optical waveguide layer 60 is provided with the first diffraction grating 64 far from the surface of cover board 2；Optical waveguide layer 60 includes the first area 61 and the Two areas 62, the first diffraction grating 64 are located at the first area 61, and the first area 61 is located at the viewing area 10 of liquid crystal display device, the second area 62 Positioned at the non-display area 20 of liquid crystal display device.

Collimated ray light source 81 is used to project the collimated light of second angle, and injects the second area 62；Second area 62 is used for will The second angle for the collimated light that collimated ray light source 81 is injected is adjusted to third angle and injects the first area 61；The standard of third angle Direct light in the first area 61 for being totally reflected.

First diffraction grating 64 is used to make to be incident upon the collimated light of the third angle of the first diffraction grating 64, after diffraction occurs 1 grade of diffraction light projects optical waveguide layer 60；In the case where the light that collimated ray light source 81 issues is visible light, 1 grade of diffraction light is used for It is totally reflected on the surface of the separate liquid crystal display die set 3 of cover board 2.

First optical clear glue-line 11 is arranged between optical waveguide layer 60 and cover board 2, for bonding the two.

Second optical clear glue-line 12 is arranged between optical waveguide layer 60 and upper polarizing layer 34, for bonding the two.

Wherein, since the first area 61 of optical waveguide layer 60 is located at viewing area 10,61 light transmission of the firstth area.

The purpose that the second area 62 is arranged in optical waveguide layer 60 is, the collimation for the second angle that collimated ray light source 81 projects Light emission enters to be unable to satisfy behind the first area 61 requirement of total reflection, thus, after carrying out light path converting by the second area 62, by collimated light Angle be adjusted to the third angle that can be totally reflected in the first area 61.The structure in the second area 62 for example can be coupling The structures such as grating, light-guiding pillar.

In order to realize full frame preposition fingerprint recognition, as shown in figure 23, optionally, the first area 61 covers viewing area 10.

In order to reduce the accounting of non-display area 20, optionally, along the thickness direction of liquid crystal display device, the covering of the second area 62 The projection of collimated ray light source 81.Collimated ray light source 81 can be arranged side by side with optical waveguide layer 60, also can be set in optical waveguide layer 60 obliquely downward.

It is set as collimated ray light source 81 by the way that radiant 8 will be collimated, the collimated light that collimated ray light source 81 is emitted is injected After optical waveguide layer 60, the lighting area of optical waveguide layer 60 it is larger, it can be achieved that large area preposition fingerprint recognition.

Example two

Example two and the difference of example one are:

As shown in figure 25, the collimation radiant 8 that liquid crystal display device includes is collimated light point light source 82.

As shown in Figure 26 and Figure 27, optical waveguide layer 60 is provided with the first diffraction grating 64 and second far from the surface of cover board 2 and spreads out Penetrate grating 65；Optical waveguide layer 60 includes the first area 61, the second area 62 and third area 63, and the first diffraction grating 64 is located at the first area 61, Second diffraction grating 65 is located at third area 63.

The non-display area 20 of liquid crystal display device is located at the outside of viewing area 10, and the first area 61 is located at least in viewing area 10, It is to be understood that the first area 61 covers viewing area 10, and third area 63 is located at non-display area 20 as shown in Figure 29 a；Alternatively, as schemed Shown in 29b, the first area 61 and third area 63 are respectively positioned on viewing area 10.

Collimated light point light source 82 is used to project the collimated light of second angle, and injects the second area 62；Second area 62 is used for will The second angle for the collimated light that collimated light point light source 82 is injected is adjusted to third angle and injects third area 63；The standard of third angle Direct light after injecting third area 63 in third area 63 for being totally reflected.

Second diffraction grating is used to make to be incident upon the collimated light of the third angle of the second diffraction grating 65,1 after diffraction occurs Grade diffraction collimated light injects the first area 61, and is totally reflected in the first area 61；First diffraction grating 64 is for making to be incident upon the 1 grade of diffraction collimated light of the third angle collimated light of one diffraction grating 64,1 grade of diffraction light after diffraction occurs project optical waveguide layer 60；In the case where the light that collimated light point light source 82 issues is visible light, 1 grade of diffraction light is used for the separate liquid crystal in cover board 2 Show that the surface of mould group 3 is totally reflected.

Wherein, as shown in figure 25, collimated light point light source 82 is arranged in optical waveguide layer 60 far from 2 side of cover board.Such as along liquid crystal The thickness direction of display device, the projection of collimated light point light source 82 are Chong Die with the second area 62.Alternatively, collimated light point light source 82 is arranged At the back side of backlight module 4, the second area 62 is injected by the collimated light that optical path converter 9 projects collimated light point light source 82.

Seen from the above description, as shown in figure 26, the second area 62 of optical waveguide layer 60 is used for light path converting, will collimate luminous point light The collimated light that source 82 is projected is adjusted to suitable angle (i.e. above-mentioned second angle).Serve as linear light in the third area 63 of optical waveguide layer 60 The effect in source, the light that collimated light point light source 82 issues is after 62 conversion angle of the secondth area, on the one hand to forward pass in third area 63 It leads, the firstth area of one side directive 61.So, for the first area 61, a linear light source has been equivalent to the first area 61 Inject collimated light.First area 61 of optical waveguide layer 60 is used up for projecting fingerprint collecting, and the linear light source in third area 63 is converted into Area source increases the area of fingerprint identification area.

Wherein, for the first area 61 and third area 63, diffraction grating, as shown in figure 28, diffraction grating are provided with Period d and height h length in hundred nanometer scales.By adjusting period d and height h, in conjunction with the standard for injecting diffraction grating The angle of direct light can adjust the injection direction of 0 grade of diffraction light and 1 grade of diffraction light, to realize the collimation light emission in third area 63 Enter the first area 61, and the light in the first area 61 is emitted, realizes the conduction of light.

As shown in Figure 29 a, along the thickness direction of liquid crystal display device, the second area 62 and third area 63 are respectively positioned on non-display area 20, the first area 61 covers viewing area 10.And along first direction, third area 63 is located at the side in the second area 62；In a second direction, One area 61 is located at the side in third area 63；Wherein, the length and wide direction of first direction and second direction display panel 30 each other.Figure The positional relationship of 63 three of the first area 61, the second area 62 and third area is only a kind of signal in 29a and Figure 29 b, without limitation.

It is understood that as viewed from the perspective of Figure 29 a, in a second direction, the first area 61 is located at third in example two The side in area 63, if but illustrate in second direction and figure it is contrary, the first area 61 then can not be located at viewing area 10, because This, second direction is direction of the third area 63 towards viewing area 10；Similarly, along first direction, third area 63 is located at the second area 62 Side, if illustrate in first direction and figure it is contrary, though third area 63 is located at non-display area 20, but the first area 61 Viewing area 10 can not be located at, therefore, first direction is direction of second area 62 towards viewing area 10.

As viewed from the perspective of Figure 29 b, in a second direction, the first area 61 is located at the side in third area 63, and second direction can be with It is the direction illustrated in figure, it can also be contrary with middle signal；Similarly, along first direction, third area 63 is located at the secondth area 62 side, if illustrate in first direction and figure it is contrary, though third area 63 is located at non-display area 20, but the firstth area 61 can not be located at viewing area 10, and therefore, first direction is direction of second area 62 towards viewing area 10.

It should be noted that non-display area 20 is located at 10 outside of viewing area, non-display area 20 can surround viewing area 10 1 Circle setting, can also be only located at several sides in more than 10 sides in viewing area.

It is set as collimated light point light source 82 by the way that radiant 8 will be collimated, and passes through the third area 63 in optical waveguide layer 60 for point Light source is converted to linear light source, is set as collimated ray light source 81, the volume of collimated light point light source 82 compared to that will collimate radiant 8 It is smaller, it is possible to reduce collimation radiant 8 can reduce in the accounting of non-display area 20 to the integrated level of 20 component of non-display area It is required that.

Example three

Example three and the difference of example two are:

As shown in Figure 30 a and Figure 30 b, the profile of viewing area 10 includes groove, and non-display area 20 includes raised zones 21, convex Region 21 and groove splice out；Second area 62 is located at raised zones 21, and the first area 61 and third area 63 are located at least in viewing area 10.

As shown in Figure 31 and Figure 32, along the direction perpendicular to liquid crystal display device thickness direction, set in liquid crystal display die set 3 It is equipped with the first opening 36, the second opening 45 is provided on backlight module 4, along the thickness direction of liquid crystal display device, raised zones 21 are overlapped with the projection of the first opening 36 and the projection of the second opening 45.

Liquid crystal display device further includes advanced optics 13, and advanced optics 13 and collimated light point light source 82 are respectively provided with In the gap that the first opening 36 and the second opening 45 are formed.

It should be noted that the shape to groove and raised zones 21 and setting position are not defined the example, scheme Be only a kind of signal in 31, but no matter which kind of shape, the profile of raised zones 21 and the profile of groove are to be overlapped, so that protrusion Region 21 and groove are seamless spliced.

It is understood that as according to fig. 30b, be located at the position close to turning in raised zones 21 in example three, In a second direction, the first area 61 is located at the side in third area 63, identical as example two, and second direction is third area 63 towards display The direction in area 10；As shown in Figure 30 a, in the case where raised zones 21 are located remotely from corner, second direction can be Figure 30 a In direction, second direction is also possible to contrary with what is illustrated in figure.Similarly, along first direction, third area 63 is located at the The side in two areas 62, if but illustrate in first direction and figure it is contrary, third area 63 can not be located at viewing area 10, because This, first direction is direction of second area 62 towards viewing area 10.

Wherein, the first area 61 can be only located at viewing area 10, and the first area 61 can also extend to raised zones 21, according to tool The structurally reasonable setting of body.

Along the thickness direction of liquid crystal display device, the projection of the raised zones 21 of non-display area 20 and the first opening 36 and the The projection of two openings 45 is overlapped, that is to say, that along the thickness direction of liquid crystal display device, the profile of the first opening 36, second are opened The profile of mouth 45, the profile three of groove are overlapped.

It is opened it is understood that advanced optics 13 and collimated light point light source 82 are arranged at the first opening 36 and second In the gaps that mouth 45 is formed, since the optical path of advanced optics 13 and collimated light point light source 82 is directed towards cover board 2, The two should be arranged side by side along the thickness direction perpendicular to liquid crystal display device.It is preceding and along the thickness direction of liquid crystal display device Set the projection of the lighting structure of optical device 13 and the projection no overlap of optical waveguide layer 60.

Since optical waveguide layer 60 has the function of changing optical path, in order to not influence effect, the daylighting knot of advanced optics 13 The optical path of the top of structure should not be blocked, and therefore, the top of the lighting structure of advanced optics 13 should not be provided with optical waveguide layer 60。

Wherein, the component such as can be front camera, environment light collector of advanced optics 13.

Front camera generally comprise shell (housing), camera lens (lens), infrared fileter (IR cutfilter), Imaging sensor (image sensor) and flexible print wiring board (FPCB), lighting structure of the camera lens as front camera.

Since cross-sectional area is smaller at the general camera lens of front camera, as shown in figure 32, optionally, advanced optics 13 Including front camera, the gap between the camera lens of front camera and liquid crystal display die set 3 is arranged in collimated light point light source 82 It is interior.

By being located at infrared fileter, imaging sensor and flexible print wiring board institute below camera lens in front camera Cross-sectional area in region is larger, therefore, as shown in figure 32, along the thickness direction of liquid crystal display device, the cross of front camera The projection of the big part of sectional area and the projection of collimated light point light source 82 are overlapping, or even the projection of covering collimated light point light source 82.

First optical clear glue-line 11 and the second optical clear glue-line 12 can extend to raised zones 21, can not also prolong Extend to raised zones 21.It is exemplary, it is provided on the first optical clear glue-line 11 and the second optical clear glue-line 12 and first Opening 36 and the second 45 corresponding openings of opening, the first optical clear glue-line 11 and the second optical clear glue-line 12 are not opened first Mouth 36 and the second opening 45 are blocked.

By making non-display area 20 include raised zones 21, advanced optics 13 and collimated light point light source 82 are arranged convex Region 21 out can reduce the area of the non-display area 20 positioned at 10 outside of viewing area, further increase liquid crystal display device Shield accounting.

Example four

Example four and the difference of example three are:

As shown in figure 33, third area 63 includes the first sub-district 631 and the second sub-district 632；Along first direction, the first sub-district 631 and second sub-district 632 be located at the two sides in the second area 62；In a second direction, the first area 61 is located at the first sub-district 631, The same side in two sub-districts 632 and the second area 62；Wherein, first direction and the second direction length of display panel 30 and width side each other To.

In order to increase the area of fingerprint identification region, as shown in figure 33, in some embodiments, the first area 61 is along second party To the edge for extending to viewing area 10.

By making third area 63 include the first sub-district 631 and the second sub-district 632, the first sub-district 631 and the second sub-district 632 are divided Not Wei Yu the second area 62 two sides, third area 63 is set compared to the side only in the second area 62, the set-up mode in this example The area of fingerprint identification area can be increased.

Example five

Example five and the difference of example two are:

As shown in figure 34, non-display area 20 includes transparent area 22 and opaque area 23, and viewing area 10 surrounds transparent area 22；No Transparent area 23 is located at the outside of viewing area 10；Along the thickness direction of liquid crystal display device, the second area 62 is located at transparent area 22, and first Area 61 and third area 63 are located at least in viewing area 10.

Each film layer as shown in Figure 35 and Figure 36, between the first substrate 311 and the second substrate 321 of display panel 30 On be provided with the first vacancy section 14；The second vacancy section 15 is provided on lower polarizing layer 35；Third is provided on backlight module 4 to engrave Dead zone 16；Along the thickness direction of liquid crystal display device, transparent area 22, the first vacancy section 14, the second vacancy section 15 and third are engraved Dead zone 16 is overlapped.

Liquid crystal display device further includes advanced optics 13, and advanced optics 13 and collimated light point light source 82 are respectively provided with In third vacancy section 16.

It should be noted that the shape to transparent area 22 and setting position are not defined the example, it is only in Figure 35 A kind of signal.

Film layer between the first substrate 311 and the second substrate 321 is for example including TFT, pixel electrode 313, common electrical Pole 314, the first insulating layer 315, second insulating layer 316, black matrix 322, chromatic filter layer 323, fingerprint collecting structure 7, liquid crystal Layer 33 etc., is provided with the first vacancy section 14, to avoid the light for blocking light transmission in each film layer.

First area 61 and third area 63 are located at least in viewing area 10 and refer to, the first area 61 and third area 63 can be only located at aobvious Show that area 10, the first area 61 and third area 63 can also extend to non-display area 20 from viewing area 10.First area 61 and third area 63 It is not meant to that the sum of 63 region of the first area 61 and third area covers viewing area 10 positioned at viewing area 10, as shown in figure 36, display Partial region in area 10 can also be not provided with optical waveguide layer 60.

Due to not having vacancy section on the first substrate 311, advanced optics 13 and collimated light point light source 82 are only capable of extending into In the third vacancy section 16 of backlight module 4.

Furthermore, it is generally the case that the direction of backlight module 4 is arrived along display panel 30, the cross-sectional area of front camera is whole Body is in the trend being gradually increased, and the cross-sectional area at the camera lens of front camera is smaller.In order to reduce by 13 He of advanced optics The accounting of collimated light point light source 82, in some embodiments, advanced optics 13 include front camera, collimated light point light source 82 are arranged in the gap between the camera lens of front camera and liquid crystal display die set 3.

That is, as shown in figure 36, collimated light point light source 82 be arranged in front camera camera lens and backlight module 4 it Between gap in.

By making non-display area 20 include transparent area 22, viewing area 10 surrounds transparent area 22, so that display device is realized entirely Face is shown.On this basis, by being reasonably arranged optical waveguide layer 60 in comprehensive screen display device, make to shield display dress comprehensively It sets and can be realized the lower fingerprint recognition of screen.

Example six

Example six and the difference of example five are:

As shown in figure 37, it is not provided with the second vacancy section 15 on lower polarizing layer 35, is provided with the second hollow out on upper polarizing layer 34 Area 15.

Second vacancy section 15 is set at least one polarizing layer, can avoid upper polarizing layer 34 and lower polarizing layer 35 is filtered jointly Light causes the lighting structure of advanced optics 13 that can not collect light.

Example seven

Example seven and the difference of example five are:

As shown in figure 38, the second vacancy section 15 is also equipped on upper polarizing layer 34, the second vacancy section 15 is filled with optical lens Gelatin 151.

As shown in figure 39, optical waveguide layer 30 does not cover viewing area 10, and liquid crystal display device further includes transparent adhesive tape filled layer 17, thoroughly Gelatin filled layer 17 and 60 same layer of optical waveguide layer are arranged, and the thickness of transparent adhesive tape filled layer 17 is equal to the thickness of optical waveguide layer 60, and transparent Glue filled layer 17 and optical waveguide layer 60 splice；Wherein, along the thickness direction of liquid crystal display device, the projection of transparent adhesive tape filled layer 17 with Transparent area 22 is overlapped.

The projection of transparent adhesive tape filled layer 17 is Chong Die with transparent area 22, it can be understood as the projection of transparent adhesive tape filled layer 17 and thoroughly Light area 22 partly overlaps, it is understood that the projection of transparent adhesive tape filled layer 17 is covered for transparent area 22.

It is filled in the thickness of the Optical transparent adhesive 151 of the second vacancy section 15 of polarizing layer 34 and the thickness of upper polarizing layer 34 It is identical, it is filled in the thickness phase of the thickness and lower polarizing layer 35 of the Optical transparent adhesive 151 of the second vacancy section 15 of lower polarizing layer 35 Together.

Transparent adhesive tape filled layer 17 can be only located at transparent area 22, can also extend to alternatively non-transparent district 22.

By the filling Optical transparent adhesive 151 in upper polarizing layer 34 and lower polarizing layer 35, and setting and optical waveguide layer 60 are together The transparent adhesive tape filled layer 17 of layer, on the one hand can reduce the refraction of light, on the other hand can reduce the first substrate 311 and second The deformation of substrate 321.

Example eight

Example eight and the difference of example five are:

As shown in Figure 40 and Figure 41, third area 63 includes the first sub-district 631 and the second sub-district 632；Along first direction, first Sub-district 631 and the second sub-district 632 are located at the two sides in the second area 62；In a second direction, the first area 61 is located at the first sub-district 631, the same side in the second sub-district 632 and the second area 62；Wherein, the length of first direction and second direction display panel 30 each other And wide direction.

More than, the only specific embodiment of the application, but the protection scope applied is not limited thereto, and it is any to be familiar with sheet Those skilled in the art within the technical scope of the present application, can easily think of the change or the replacement, and should all cover at this Within the protection scope of application.Therefore, the protection scope of the application should be subject to the protection scope in claims.

Claims

1. a kind of liquid crystal display device, including backlight module, liquid crystal display die set and cover board, the liquid crystal display die set include Display panel, upper polarizing layer and lower polarizing layer, the lower polarizing layer is close to the backlight module, and the upper polarizing layer is close to described Cover board；It is characterized in that, the liquid crystal display device further include: collimated light extraction structure and fingerprint collecting structure；

The collimated light extraction structure and the fingerprint collecting structure are between the lower polarizing layer and the cover board, the finger Line acquisition structure is located at the collimated light extraction structure far from the cover board side；

The light-emitting surface of the collimated light extraction structure is located at least in the liquid crystal towards the cover board, the collimated light extraction structure The viewing area of display device, and the collimated light extraction structure is located at the partial light permeability of the viewing area；

The fingerprint collecting structure is used to receive the reflected light of the collimated light for the first angle that the collimated light extraction structure projects.

2. liquid crystal display device according to claim 1, which is characterized in that the display panel includes black matrix, along institute The thickness direction of liquid crystal display device is stated, the projection of the black matrix covers the projection of the fingerprint collecting structure.

3. liquid crystal display device according to claim 1, which is characterized in that the fingerprint collecting structure is integrated in described aobvious Show in panel.

4. liquid crystal display device according to claim 3, which is characterized in that the display panel further include array substrate with And the counter substrate being oppositely arranged with the array substrate, black matrix are arranged in the counter substrate；

The fingerprint collecting structure setting is in the black matrix far from the array substrate side.

5. liquid crystal display device according to claim 1, which is characterized in that the fingerprint collecting structure setting is on described Between polarizing layer and the cover board.

6. liquid crystal display device according to claim 1-5, which is characterized in that the display panel includes multiple Sub-pixel unit, black matrix are located between sub-pixel unit described in arbitrary neighborhood；

The fingerprint collecting structure includes multiple fingerprint collecting units, and the fingerprint collecting unit and sub-pixel group correspond, The sub-pixel group includes at least one described sub-pixel unit, and the sub-pixel list for including in the different sub-pixel groups It is first different.

7. liquid crystal display device according to claim 1, which is characterized in that the collimated light extraction structure is arranged described Between upper polarizing layer and the cover board.

8. liquid crystal display device according to claim 1, which is characterized in that the collimated light extraction structure is collimated light face Light source.

9. liquid crystal display device according to claim 8, which is characterized in that along the thickness side of the liquid crystal display device To the projection of the collimated light area source covers the viewing area.

10. liquid crystal display device according to claim 1, which is characterized in that the collimated light extraction structure is optical waveguide layer, The optical waveguide layer is provided with the first diffraction grating far from the surface of the cover board；

The optical waveguide layer includes the firstth area, and first diffraction grating is located at firstth area；

The liquid crystal display device further includes collimation radiant；The collimation radiant is used to collimated light injecting the leaded light Layer, collimated light are totally reflected in firstth area；

First diffraction grating is used to make to be incident upon the collimated light of first diffraction grating, 1 grade of diffraction light after diffraction occurs Project the optical waveguide layer；

The collimation radiant is located at the non-display area of the liquid crystal display device, alternatively, the collimation radiant is positioned at described Backlight module is far from the liquid crystal display die set side；

Wherein, direct light point light source or collimated ray light source subject to the collimation radiant.

11. liquid crystal display device according to claim 10, which is characterized in that direct light linear light subject to the collimation radiant Source；

The optical waveguide layer further includes the secondth area；

The collimated ray light source is used to project the collimated light of second angle, and injects secondth area；

Secondth area is for being adjusted to third angle for the second angle for the collimated light that the collimated ray light source is injected and penetrating Enter firstth area.

12. liquid crystal display device according to claim 10, which is characterized in that direct light point light subject to the collimation radiant Source；

The optical waveguide layer further includes the secondth area and third area；The optical waveguide layer is additionally provided with second far from the surface of the cover board and spreads out Penetrate grating；Second diffraction grating is located at the third area；

The collimated light point light source is used to project the collimated light of second angle, and injects secondth area；

Secondth area is for being adjusted to third angle for the second angle for the collimated light that the collimated light point light source is injected and penetrating Enter the third area, the collimated light of third angle is used to be totally reflected in the third area after injecting the third area；

Second diffraction grating is used to make to be incident upon the collimated light of second diffraction grating, 1 grade of diffraction standard after diffraction occurs Direct light injects firstth area；

Wherein, the collimated light point light source is arranged in the optical waveguide layer far from the cover board side.

13. liquid crystal display device according to claim 12, which is characterized in that the non-display area is located at the viewing area Outside；

Secondth area and the third area are respectively positioned on the non-display area, and firstth area covers the viewing area.

14. liquid crystal display device according to claim 12, which is characterized in that the non-display area is located at the viewing area Outside；The profile of the viewing area includes groove, and the non-display area includes raised zones, the raised zones with it is described recessed Slot splicing；

Secondth area is located at the raised zones, and firstth area and the third area are located at least in the viewing area.

15. liquid crystal display device according to claim 12, which is characterized in that the non-display area includes transparent area and not Transparent area, the viewing area surround the transparent area；The opaque area is located at the outside of the viewing area；

Secondth area is located at the transparent area, and firstth area and the third area are located at least in the viewing area.

16. the described in any item liquid crystal display devices of 3-15 according to claim 1, which is characterized in that along first direction, described 3rd area are located at the side in secondth area；In a second direction, firstth area is located at the side in the third area；

Wherein, the length and wide direction of the first direction and the second direction display panel each other.

17. liquid crystal display device according to claim 14 or 15, which is characterized in that the third area includes the first sub-district With the second sub-district；

Along first direction, first sub-district and second sub-district are located at the two sides in secondth area；In a second direction, Firstth area is located at the same side of first sub-district, second sub-district and secondth area；

18. liquid crystal display device according to claim 17, which is characterized in that firstth area prolongs along the second direction Extend to the edge of the viewing area.

19. liquid crystal display device according to claim 10, which is characterized in that the collimation radiant is arranged in the back Optical mode group is far from the liquid crystal display die set side；

The liquid crystal display device further includes optical path converter；The optical path converter is located at the non-display area；

The optical path converter is used to the collimated light that the collimation radiant is incident upon the optical path converter injecting the leaded light Layer.

20. liquid crystal display device according to claim 14, which is characterized in that along perpendicular to the liquid crystal display device The direction of thickness direction is provided with the first opening in the liquid crystal display die set, the second opening is provided on the backlight module, Along the thickness direction of the liquid crystal display device, projection and described second of the raised zones with first opening are open Projection is overlapped；

The liquid crystal display device further includes advanced optics, and the advanced optics and the collimation radiant are respectively provided with In the gap that first opening and second opening are formed.

21. liquid crystal display device according to claim 15, which is characterized in that positioned at the of the surface of the display panel The first vacancy section is provided in each film layer between one substrate and the second substrate；

The second vacancy section is provided on the lower polarizing layer and/or the lower polarizing layer；

Third vacancy section is provided on the backlight module；

The transparent area, first vacancy section, second vacancy section and the third vacancy section are overlapped；

The liquid crystal display device further includes advanced optics, and the advanced optics and the collimation radiant are respectively provided with In the third vacancy section.

22. the liquid crystal display device according to claim 20 or 21, which is characterized in that before the advanced optics include Camera is set, the gap between the camera lens of the front camera and the liquid crystal display die set is arranged in the collimation radiant It is interior.

23. liquid crystal display device according to claim 21, which is characterized in that second vacancy section is filled with optical lens Gelatin.

24. liquid crystal display device according to claim 21, which is characterized in that the liquid crystal display device further includes transparent Glue filled layer, the transparent adhesive tape filled layer and the optical waveguide layer same layer are arranged, and the thickness of the transparent adhesive tape filled layer is equal to described The thickness of optical waveguide layer, and the transparent adhesive tape filled layer and the optical waveguide layer splice；

Wherein, along the thickness direction of the liquid crystal display device, the projection of the transparent adhesive tape filled layer and the light transmission area overlapping.

25. the described in any item liquid crystal display devices of 0-15 according to claim 1, which is characterized in that the optical waveguide layer is close to institute The surface for stating cover board is provided with the first optical clear glue-line, and the first optical clear glue-line is planar or ring-type；

And/or；

The optical waveguide layer is provided with the second optical clear glue-line, second Optical transparent adhesive close to the surface of the upper polarizing layer Layer is planar or ring-type.

26. liquid crystal display device according to claim 1, which is characterized in that collimated light is visible light, the standard of first angle Direct light is used to be totally reflected on the surface far from the liquid crystal display die set of the cover board.