Summary of the invention
The embodiment of the invention provides a kind of liquid crystal displays and virtual reality helmet.The technical solution is as follows:
In a first aspect, providing a kind of liquid crystal display, the liquid crystal display includes that the first display area and second are aobviousShow region, when the liquid crystal display shows the target image with barrel distortion, the target image is located at described firstIn display area, and, it is located at outside second display area；
Wherein, in second display area, the backlight of the liquid crystal display is infrared light supply.
Optionally, in second display area, the sub-pix optical filter in the liquid crystal display is infrared absorption filterMating plate, the infrared fileter allow by light wavelength it is consistent with the wavelength for the infrared light that the infrared light supply is emitted.
Optionally, in first display area, the liquid crystal display is provided with sub-pix optical filter；
In second display area, the not set sub-pix optical filter of liquid crystal display.
Optionally, in second display area, the light intensity for the infrared light that the liquid crystal display is sent out canIt is periodically switched between the first light intensity and the second light intensity.
Optionally, in second display area, the liquid crystal display is provided with Object LC layer, the target liquidThe posture of liquid crystal in crystal layer can be under the driving of the driving assembly of the liquid crystal display, in the first posture and the second postureBetween be periodically switched.
Optionally, the light intensity of the infrared light of the infrared light supply transmitting can carry out between third light intensity and the 4th light intensityIt is periodically switched.
Optionally, in first display area, the liquid crystal display is provided with liquid crystal layer；
In second display area, the not set liquid crystal layer of liquid crystal display.
Optionally, in first display area, the liquid crystal display is provided with upper polaroid and down polaroid；
In second display area, the not set upper polaroid of the liquid crystal display and down polaroid.
Second aspect, provides a kind of virtual reality helmet, and the virtual display helmet includes such as above-mentioned theOn the one hand any liquid crystal display and camera assembly；
Wherein, the camera assembly is used to shoot the eyeball by the bright user of Infrared Targets illumination, obtainsTo the pupil image of the user, the Infrared Targets light liquid crystal display is sent out in the second display areaInfrared light.
Optionally, the virtual reality helmet further includes lens, and the size of second display area is according toThe optical characteristics of lens determines.
Technical solution provided in an embodiment of the present invention has the benefit that
By providing a kind of liquid crystal display including the first display area and the second display area, wherein the second displayThe backlight in region is infrared light supply, when the liquid crystal display shows the target image with barrel distortion, the target imageIn the first display area, and, it is located at outside the second display area, since the liquid crystal display being arranged in VR helmet is logicalIt often needs to show the target image with barrel distortion, when showing the target image, a part of viewing area of liquid crystal displayDomain that is to say the second display area, is invalid display area, is not used to show the target image, in other words, in liquid crystalWhen display screen shows the target image, the second display area is located at except the target image, therefore, by the back of the second display areaLight source is set as infrared light supply, on the one hand will not influence the display to target image, on the other hand can use the infrared light supplyThe infrared light of transmitting is irradiated the eyeball of user, so that the tracking to user's blinkpunkt is realized, in this way, VR helmet is notIt needs to be separately provided the special mechanical structure for being used to carry infrared light supply, the tracking to user's blinkpunkt also may be implemented, becauseThis, can reduce the volume of VR helmet.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present inventionFormula is described in further detail.
In practical applications, empty in order to guarantee the telepresenc of user under the premise of reducing image rendering and transmission pressureQuasi- reality (Virtual Reality, VR) helmet can usually provide blinkpunkt rendering function.
It is look in a rendering function, VR helmet can be only the image district of field of view center when to image renderingDomain provides higher resolution ratio, and provides lower resolution ratio for other image-regions.Wherein, field of view center refers to userBlinkpunkt around region.
In order to determine that field of view center, VR helmet can be tracked the blinkpunkt of user.In the related technology, VR headWearing equipment can be set the special mechanical structure for being used to carry infrared light supply, and infrared using carrying in the mechanical structureLight source is irradiated the eyeball of user, to determine the pupil position of user, then, is determined according to the pupil position of userThe blinkpunkt of user.
It will increase the body of VR helmet however, mechanical structure is separately provided in VR helmet to carry infrared light supplyProduct.
The embodiment of the invention provides a kind of liquid crystal displays and virtual reality helmet, can realize blinkpunkt wash with watercoloursUnder the premise of contaminating function, reduce the volume of VR helmet.
In the following, by being briefly described to the structure of liquid crystal display provided in an embodiment of the present invention, the liquid crystal displayIt can be the display screen in VR helmet.As shown in Figure 1, liquid crystal display 10 provided in an embodiment of the present invention may includeOne display area 101 and the second display area 102.
When the liquid crystal display 10 display has the target image of barrel distortion, which is located at the first viewing areaIn domain 101, and, it is located at outside the second display area 102, wherein in the second display area 102, the back of the liquid crystal display 10Light source is infrared light supply.
In order to provide the user with broader visual field, promote the telepresenc of user, VR helmet would generally in display screen andConvex lens is set between human eye.
However, the imaging after convex lens of the image in display screen generally has certain distortion, and, this distortionUsually pincushion distortion.
Referring to FIG. 2, as shown in Fig. 2, the normal image a that shows of display screen imaging after convex lens T is toolThere is the image b of pincushion distortion.
In order to guarantee the display effect of image, VR helmet generally requires carry out distortion correction.It is a kind of relatively conventionalDistortion correction method is: the image to be shown increases barrel distortion to compensate pincushion distortion caused by convex lens.In other words, VR helmet can increase barrel distortion to the image shown, to obtain having barrel distortionTarget image then shows the target image in display screen.
Referring to FIG. 3, as shown in figure 3, the target image c with barrel distortion that shows of display screen is after convex lens TImaging is normal image a.
When display has the target image of barrel distortion, a part of display area in display screen is invalid viewing areaDomain, so-called invalid display area refer to the region not shown to target image, it is generally the case that the invalid display areaPositioned at four edges of display screen.
Referring to FIG. 4, as shown in figure 4, when display screen shows the target image R with barrel distortion, in display screenA, B, C and D are invalid display area.
Liquid crystal display 10 provided in an embodiment of the present invention may include the first display area 101 and the second display area102, wherein when the liquid crystal display 10 display has the target image of barrel distortion, which is invalidDisplay area.
In liquid crystal display 10 provided in an embodiment of the present invention, the backlight of the second display area 102 can be infraredLight source.Infrared light supply is set by the backlight 102 of the second display area, on the one hand, will not influence 10 pairs of liquid crystal display toolsThere is the display of the target image of barrel distortion, on the other hand, the infrared light of infrared light supply transmitting can eyeball area to userDomain is irradiated, to realize the tracking to user's blinkpunkt.In this way, VR helmet does not need that special be used for is separately providedThe mechanical structure for carrying infrared light supply, also may be implemented the tracking to user's blinkpunkt, it is thereby possible to reduce VR helmetVolume.
In conclusion the embodiment of the present invention is by providing a kind of liquid crystal including the first display area and the second display areaDisplay screen, wherein the backlight of the second display area is infrared light supply, shows the mesh with barrel distortion in the liquid crystal displayWhen logo image, which is located in the first display area, and, it is located at outside the second display area, is worn due to being arranged in VRLiquid crystal display in equipment usually requires the target image that display has barrel distortion, when showing the target image, liquid crystalA part of display area of display screen, that is to say the second display area, is invalid display area, is not used to show the targetImage, in other words, when liquid crystal display shows the target image, the second display area is located at except the target image, becauseThis, sets infrared light supply for the backlight of the second display area, on the one hand will not influence the display to target image, another partyThe infrared light that face can use infrared light supply transmitting is irradiated the eyeball of user, chases after to realize to user's blinkpunktTrack also may be implemented pair in this way, VR helmet does not need to be separately provided special for carrying the mechanical structure of infrared light supplyThe tracking of user's blinkpunkt, it is thereby possible to reduce the volume of VR helmet.
In an alternative embodiment, the sub-pix optical filter in the second display area 102, in liquid crystal display 10Be infrared fileter, wherein the infrared fileter allow by light wavelength and liquid crystal display 10 in the second viewing areaThe wavelength for the backlight (that is to say infrared light supply) being arranged in domain 102 is consistent.
Under normal conditions, for each pixel, 3 sub-pix optical filters are can be set in liquid crystal display, respectively redColo(u)r filter, green color filter and blue color filter, the white light that backlight issues can be with shape after 3 sub-pix optical filtersAt feux rouges, green light and blue light.
And liquid crystal display 10 provided in an embodiment of the present invention, in the second display area 102, the sub-pix filter of settingMating plate can be infrared fileter, the infrared fileter allow by light wavelength and liquid crystal display 10 in the second displayThe wavelength for the backlight (that is to say infrared light supply) being arranged in region 102 is consistent, in this manner it is ensured that infrared light supply sending is redOuter light can be projected from infrared fileter.
Certainly, in order to guarantee infrared light supply issue infrared light normal injection, in an alternative embodiment, liquid crystalDisplay screen 10 can be not provided with sub-pix optical filter in second display area 102.
In order to guarantee that liquid crystal display 10 can normal displaying target image, liquid crystal display in the first display area 101Sub-pix optical filter has can be set in screen 10 in the first display area 101, and, for each pixel, liquid crystal display 10 can3 sub-pix optical filters, respectively Red lightscreening plate, green color filter and blue color filter are arranged.
In an alternative embodiment, in the second display area 102, infrared light that liquid crystal display 10 is sent outLight intensity can be periodically switched between the first light intensity and the second light intensity.
In practical application, the infrared light for being radiated at user eyeball region can form hot spot in the eyeball of the user,During determining pupil position, VR helmet is easy to for the hot spot to be mistaken for the pupil of user, to cause userPupil position determines mistake, then can render function to the blinkpunkt of VR helmet and adversely affect.
In order to improve the accuracy that user's pupil position determines, liquid crystal display provided in an embodiment of the present invention 10 is secondThe light intensity for the infrared light that display area 102 issues from inside to outside can periodically be cut between the first light intensity and the second light intensityIt changes, wherein the difference of the first light intensity and the second light intensity can be greater than target difference, which can be set by technical staffIt is fixed.In this way, the infrared light for being radiated at user eyeball region forms hot spot in the eyeball of the user and will generate flashing, thusSo that VR helmet is relatively easily identified the hot spot, therefore, VR helmet can be reduced by the hot spot and be mistaken for user'sThe accuracy that user's pupil position determines then can be improved in the probability of pupil.
In one possible implementation, liquid crystal display 10 provided in an embodiment of the present invention is in the second display areaObject LC layer can be set in 102, the posture of the liquid crystal in the Object LC layer can be in the driving of liquid crystal display 10Under the driving of component, it is periodically switched between the first posture and the second posture.
In this way, in the case where the light intensity for the infrared light that infrared light supply issues is constant, the liquid crystal in Object LC layer is theWhen one posture, liquid crystal display 10 can be the first light intensity in the light intensity for the infrared light that the second display area 102 issues from inside to outside,When liquid crystal in Object LC layer is the second posture, liquid crystal display 10 issues infrared from inside to outside in the second display area 102The light intensity of light can be the second light intensity.
In alternatively possible implementation, the light intensity of the infrared light of infrared light supply transmitting can be in third light intensity and theIt is periodically switched between four light intensity.
In this way, liquid crystal display 10 is in the second display when the light intensity of the infrared light of infrared light supply transmitting is third light intensityThe light intensity for the infrared light that region 102 issues from inside to outside can be the first light intensity, be in the light intensity of the infrared light of infrared light supply transmittingWhen four light intensity, liquid crystal display 10 can be the second light in the light intensity for the infrared light that the second display area 102 issues from inside to outsideBy force.
It should be pointed out that above-mentioned third light intensity can be equal to the first light intensity, above-mentioned 4th light intensity can be equal to the second lightBy force.
It may also be noted that in this implementation, in the second display area 102, liquid crystal display 10 can notLiquid crystal layer is set, in addition, liquid crystal display 10 can also be not provided with upper polaroid and down polaroid.
Certainly, in order to guarantee liquid crystal display 10 can normal displaying target image, in the first display area 101, liquidLiquid crystal layer, upper polaroid and down polaroid has can be set in crystal display screen 10.
In conclusion the embodiment of the present invention is by providing a kind of liquid crystal including the first display area and the second display areaDisplay screen, wherein the backlight of the second display area is infrared light supply, shows the mesh with barrel distortion in the liquid crystal displayWhen logo image, which is located in the first display area, and, it is located at outside the second display area, is worn due to being arranged in VRLiquid crystal display in equipment usually requires the target image that display has barrel distortion, when showing the target image, liquid crystalA part of display area of display screen, that is to say the second display area, is invalid display area, is not used to show the targetImage, in other words, when liquid crystal display shows the target image, the second display area is located at except the target image, becauseThis, sets infrared light supply for the backlight of the second display area, on the one hand will not influence the display to target image, another partyThe infrared light that face can use infrared light supply transmitting is irradiated the eyeball of user, chases after to realize to user's blinkpunktTrack also may be implemented pair in this way, VR helmet does not need to be separately provided special for carrying the mechanical structure of infrared light supplyThe tracking of user's blinkpunkt, it is thereby possible to reduce the volume of VR helmet.
The embodiment of the invention also provides a kind of VR helmet, the VR helmet may include camera assembly and onState liquid crystal display described in embodiment.
Wherein, which is used to shoot the eyeball by the bright user of Infrared Targets illumination, obtainsThe pupil image of the user, the Infrared Targets light are the infrared light that liquid crystal display is sent out in the second display area.
In one embodiment of the invention, which further includes lens, wherein the size of the second display areaIt is determined according to the optical characteristics of the lens.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardwareIt completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readableIn storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention andWithin principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.