WO2018076775A1 - 显示面板和显示装置 - Google Patents

显示面板和显示装置 Download PDF

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Publication number
WO2018076775A1
WO2018076775A1 PCT/CN2017/092018 CN2017092018W WO2018076775A1 WO 2018076775 A1 WO2018076775 A1 WO 2018076775A1 CN 2017092018 W CN2017092018 W CN 2017092018W WO 2018076775 A1 WO2018076775 A1 WO 2018076775A1
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WO
WIPO (PCT)
Prior art keywords
display
display unit
display panel
unit groups
same
Prior art date
Application number
PCT/CN2017/092018
Other languages
English (en)
French (fr)
Inventor
王维
杨亚锋
陈小川
张粲
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/751,558 priority Critical patent/US10642061B2/en
Publication of WO2018076775A1 publication Critical patent/WO2018076775A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/017—Head mounted
    • G02B27/0172—Head mounted characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
    • G02B30/36—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using refractive optical elements, e.g. prisms, in the optical path between the images and the observer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
    • H04N13/106—Processing image signals
    • H04N13/133—Equalising the characteristics of different image components, e.g. their average brightness or colour balance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/307—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using fly-eye lenses, e.g. arrangements of circular lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
    • H04N13/312—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers the parallax barriers being placed behind the display panel, e.g. between backlight and spatial light modulator [SLM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/324—Colour aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/344—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] with head-mounted left-right displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0132—Head-up displays characterised by optical features comprising binocular systems
    • G02B2027/0134—Head-up displays characterised by optical features comprising binocular systems of stereoscopic type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0185—Displaying image at variable distance

Definitions

  • At least one embodiment of the present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
  • a near-eye display device for realizing 3D display generally includes a left display area corresponding to a left eye of a user and a right display area corresponding to a right eye of a user, and displays different parallax images of the same scene in two display areas of left and right, and uses a person The parallax of both eyes achieves a 3D display effect.
  • the near-eye display device utilizes only the parallax of both eyes, the focus position of the single eye is on the display screen instead of focusing on the displayed 3D scene, and the problem that the focus distance of the single eye and the convergence distance of the eyes are inconsistent arises. And in the real world, the two are consistent, so the wearer may experience discomfort such as dizziness.
  • At least one embodiment of the present invention provides a display panel and a display device.
  • a display panel including a first display area and a driving circuit.
  • the first display area includes at least two display unit groups, each of the display unit groups including at least one display unit; all display units of the first display area are configured to generate light rays that are concentrated in the same eye of the user; All of the display units belonging to the same display unit group are configured to generate light rays that converge to the same viewpoint on the same eye of the user, and the display units belonging to different display unit groups are configured to be respectively generated on the same eye of the user.
  • the driving circuit is configured to drive the display units of the at least two display unit groups such that the at least two display unit groups display screens viewed at respective viewpoints representing the same display scene.
  • each of the display unit groups of the display unit Evenly distributed in the first display area.
  • a distance between any adjacent two viewpoints of the at least two display unit groups is less than 2.5 mm.
  • the driving circuit is configured to generate a driving signal to be input to at least two display unit groups of the display unit group to drive the display unit.
  • the driving circuit is configured to generate screen information including information indicating a color and a brightness of a pixel of a picture to be displayed, and a pixel indicating the pixel point Displaying information of the distance; the driving circuit further generates a driving signal according to the screen information to drive the display units of the at least two display unit groups.
  • the driving circuit is further configured to: divide the to-be-displayed picture into a plurality of groups of pixel points according to the display distance according to the generated picture information; The display distance of the group of pixels, determining the distance between any two display units belonging to two or more display unit groups when displaying each group of pixels in two or more display unit groups; Determining the distance between any two display units, determining a screen that the display unit of the display unit group should display; writing a driving signal corresponding to the screen that should be displayed to the display unit.
  • the plurality of viewpoints corresponding to the display unit group are arranged in an axisymmetric distribution manner, a central radial distribution manner, or a spiral radiation distribution manner.
  • the display panel includes four display unit groups, and the connection of two viewpoints and the connection of the other two viewpoints among the four viewpoints corresponding to the four display unit groups Vertically intersect, and the four viewpoints are evenly distributed around the intersection of the two lines.
  • a display panel further comprising an light emission control layer configured to control a color and a direction of light generated by the display unit, or to control light generated by the display unit The direction.
  • the display unit includes two or more pixels, and the two or more pixels generate light rays in the same direction.
  • a display panel further comprising a second display area, the light generated by the display unit of the first display area and the second display area is respectively irradiated into the eyes of the user, and The first display area and the second display area respectively display a binocular parallax screen indicating the same display scene.
  • the display panel includes two independent sub-display panels, and the first display area and the second display area are respectively located on two independent sub-display panels; or The first display area and the second display area are two display areas on the display panel.
  • a display device comprising the display panel of any of the above embodiments.
  • the driving circuit drives the display unit of the at least two display unit groups, so that at least two display unit groups of the display panel display a picture that can be viewed by the same display scene at the corresponding viewpoint; belonging to different display units
  • the images of the group can be imaged on the retina of the human eye through different viewpoints, and the degree of focus is adjusted to a suitable degree by the lens of the human eye.
  • FIG. 1A is a schematic view of a display panel in accordance with an embodiment of the present invention.
  • FIG. 1B is a schematic diagram showing the principle of generating a 3D picture of a display panel according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the distribution of a display unit according to an embodiment of the present invention.
  • FIG. 3 is a schematic view showing an optical path distribution of a display panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing optical paths of a display panel according to another embodiment of the present invention.
  • FIG. 5 is a schematic diagram showing a distribution of display units of a display panel according to another embodiment of the present invention.
  • FIG. 6 is a schematic view showing the optical path distribution of the display panel shown in FIG. 5.
  • FIG. 6 is a schematic view showing the optical path distribution of the display panel shown in FIG. 5.
  • a display panel including a first display area and a driving circuit, the first display area including at least two display unit groups, each display unit group including at least one display unit .
  • the number of display units in each display unit group is the same or different.
  • All of the display units of the first display area are configured to produce light that converges into the same eye of the user.
  • All of the display units belonging to the same display unit group are configured to generate light rays of the same viewpoint that are concentrated on the same eye of the user, and the display units belonging to different display unit groups are configured to be respectively generated on the same eye of the user.
  • Light in different viewpoints That is to say, the light generated by the display units belonging to different display unit groups is respectively concentrated into at least two viewpoints of the human eye without being aggregated into the same viewpoint.
  • the driving circuit is configured to drive the display units of the at least two display unit groups such that the at least two display unit groups display the pictures viewed at the respective viewpoints representing the same display scene.
  • at least two display unit groups driven by the driving circuit may include all or part of the display unit group on the display panel.
  • the above display scene corresponds to a 3D picture, and the picture that can be viewed at each viewpoint is a 2D picture.
  • the display scene may include scenes, objects, people, and the like, and the 2D screens observed at the two viewpoints are respectively the screens obtained by viewing the display scene from two directions.
  • the same display scene refers to a scene in reality represented by a 3D picture.
  • different viewpoints of the same eye of the user and different eyes can obtain different pictures.
  • Each picture can be imaged on the retina through multiple viewpoints on the pupil of the human eye.
  • the human eye adjusts the lens to a suitable focus state, and images the retina of multiple viewpoints into a clear image, thereby achieving monocular focusing. , 3D display effect.
  • FIG. 1A is a schematic illustration of a display panel in accordance with an embodiment of the present invention.
  • the present invention is exemplified by a display panel including two display unit groups in the case of two viewpoints. The embodiment will be described. It can be inferred that in the case of multi-view, the display panel includes a plurality of display unit groups respectively corresponding to the plurality of viewpoints.
  • the display panel 10 includes a first display area including two display unit groups 100, and each display unit group 100 includes at least one display unit 101. All of the display units 101 of the first display area are configured to generate light rays 101A and 101B that are respectively concentrated on two viewpoints in the same eye 200 of the user, and the light rays 101A and 101B respectively reach the pupil of the eye (reference numeral 201 in Fig. 1A). Viewpoints A and B on the top (or near the pupil).
  • the display unit 101 of the first display area is equally distributed among the two display unit groups 100, and the display units 101 respectively belonging to the two display unit groups 100 are alternately distributed (but are not limited thereto).
  • the display unit group 100 corresponding to each of the two viewpoints A and B respectively generates different screens representing the same display scene. It is worth noting that the black dots in the display panel in FIG. 1A indicate the omitted display unit 101.
  • FIG. 1B is a schematic diagram showing the principle of generating a 3D picture of a display panel according to an embodiment of the present invention.
  • the 3D picture shown in the figure includes five points numbered 1 to 5.
  • the five display units 101 belonging to the two display unit groups 100 on the display panel 10 respectively display the five points, which are seen by the human eye through the two viewpoints A and B, and are viewed at each viewpoint A or B.
  • the human eye adjusts the lens to a proper focus state, and images the retina of multiple viewpoints into a clear image. Form a 3D picture.
  • the display distances of the three points 1, 2, and 5 are equal, and the distance between the two display units for displaying the point labeled 1 in the two display unit groups 100 is used for display.
  • the distance between the two display units of the point numbered 2 and the distance between the two display units for displaying the point numbered 5 are equal.
  • the distance between two display units for displaying the point labeled 3 in the two display unit groups 100 and the distance between the two display units for displaying the point labeled 4 are equal.
  • the distance between two display units for displaying a point numbered 1 and the distance between two display units for displaying a point numbered 3 are not equal.
  • the viewpoint refers to the position at which the ray 101A or 101B illuminates the landing point on the pupil of the human eye (reference numeral 201 in FIG. 1A) or near the pupil; from the overall view of the display panel, the viewpoint refers to the entire display.
  • the light 101A or 101B emitted by the panel is at each convergence point formed on the pupil of the human eye (reference numeral 201 in Fig. 1A) or near the pupil; the above viewpoint may be a point or region on the pupil.
  • At least two display unit groups 100 are respectively disposed in the first display area, and at least two display unit groups 100 respectively correspond to at least two viewpoints on the human eye, at least two The display unit group 100 respectively generates different screens that can be viewed at at least two viewpoints representing the same display scene, and aggregates the screens to at least two viewpoints, respectively.
  • the system After imaging, the system forms a common image on the retina (the image on the retina formed when the human eye observes the real scene corresponding to the displayed scene in the real environment), which realizes monocular focusing and 3D display. effect.
  • the human eye can achieve selective focusing of the display scene by changing the focus state of the lens, so that selective viewing with different distances, different orientations, and different depths of field can be selected; wherein selective focusing can be performed by selectively focusing different positions of the two images. Focusing can also be done by selecting two of the multiple frames for focusing.
  • the monocular focus is no longer on the display screen, but is focused on the displayed 3D scene, and when the display panel according to the embodiment of the present invention is combined with the binocular parallax 3D technology, the binocular parallax 3D technology can be solved.
  • the problem that the focus distance of the single eye and the convergence distance of the eyes are inconsistent greatly reduces the possibility of discomfort such as dizziness of the wearer.
  • the display unit 101 in the embodiment of the present invention is a directional type display unit, and the directional type display unit means that the display unit is configured to generate light having an angle with a set size of the display panel.
  • the display units 101 of each display unit group 100 are evenly distributed within the first display area, and each display unit group 100 corresponds to one viewpoint.
  • the uniform distribution means that the first display area is divided into a plurality of sub-areas, and the display unit 101 belonging to one display unit group 100 is evenly arranged in each sub-area.
  • two adjacent display units 101 may belong to two display unit groups 100 corresponding to different viewpoints, or belong to one display unit group 100 corresponding to the same viewpoint.
  • the display units 101 belonging to different display unit groups 100 can be arranged in an alternate arrangement.
  • the display units 101 labeled 1 to 4 respectively belong to the display unit group 100 corresponding to four different viewpoints.
  • the display units 101 of each display unit group 100 are evenly distributed in the first display area, so that each display unit group can form a screen of the same size.
  • the driving circuit is configured to drive the display unit 101 on the display panel to perform screen display, so that the plurality of display unit groups 100 respectively display the same display scene and the plurality of display unit groups 100 corresponds to the view that can be viewed by multiple viewpoints.
  • a driving circuit of a display panel includes the following two driving modes.
  • the driving circuit is configured to generate a display to be input to at least two displays
  • a driving signal of the display unit 101 of the cell group 100 is shown to drive the display unit 101.
  • the driving signal input to the display unit 101 serves as a driving voltage for driving the pixels of the display unit 101.
  • pixels having different display distances in the screen can be simultaneously displayed, or pixels having one display distance can be displayed each time in a time sharing manner.
  • the driving circuit is configured to generate picture information, the picture information includes information indicating a color and a brightness of a pixel of the picture to be displayed, and information indicating a display distance of the pixel; the driving circuit is further based on The screen information generates a drive signal to drive the display units 101 of the at least two display unit groups 100.
  • the display distance refers to the distance from the point viewed by the human eye to the human eye in the 3D picture.
  • the driving circuit divides the to-be-displayed picture into a plurality of groups of pixel points according to the display distance according to the generated picture information; and determines the two or more display unit groups 100 according to the display distance of each group of pixel points.
  • the distance between any two display units 101 of the two or more display units 101 used when displaying each set of pixels (hereinafter referred to as the distance between the corresponding display units 101, all in each group of pixels)
  • the distance between any two corresponding display units 101 of the pixel points is equal); according to the distance between any two display units 101 used when each group of pixel points is displayed, it is determined that the display unit 101 of the display unit group 100 should display Screen of the drive; the drive signal corresponding to the screen that should be displayed is written into the display unit 101.
  • the driving circuit determines a screen that the display unit 101 of the display unit group 100 should display based on the information for describing the display distance of the pixel point in the screen information. Taking a display of a group of pixel points by using two display unit groups 100 as an example, a screen that the display unit 101 of the first display unit group should display may be determined according to the screen to be displayed, and then the display unit of the first display unit group is determined according to the display distance.
  • 101 is a corresponding display unit 101 in the second display unit group; the display unit 101 of the first display unit group displays the same screen in the second display unit group as the corresponding display unit 101 and the display unit 101 of the first display unit group.
  • the second driving method also includes two display modes: the first mode is a time-sharing display mode, that is, pixels with different display distances are displayed at different times, by pixels having different display distances. Point superposition obtains a 3D image within a certain depth of field; the second mode is a simultaneous display mode, that is, displaying a 3D image within a certain depth of field at the same time.
  • the first mode is a time-sharing display mode, that is, pixels with different display distances are displayed at different times, by pixels having different display distances. Point superposition obtains a 3D image within a certain depth of field
  • the second mode is a simultaneous display mode, that is, displaying a 3D image within a certain depth of field at the same time.
  • the display panel at the same time only displays images with the same display distance.
  • all pixels can be displayed by multiple display, the display resolution is higher, but the response speed is slower; in the second display mode, the display panel displays all the pixels of the image to be displayed at the same time, so The response is faster, but the resolution is degraded (you may need to discard some of the pixels to achieve).
  • the display panel In the first display mode, at the same time, the display panel only displays the same pixel point having the display distance, so after determining the distance between the two display units 101, according to the distance and the position distribution of the pixel points to be displayed, The two display units are determined on the display panel. Taking two display unit groups to display a group of pixel points as an example, as shown in FIG.
  • the light rays 1 and 4 are light emitted by two corresponding display units (for displaying the same pixel on the screen to be displayed), the light 2, 5 is the light emitted by two corresponding display units, the light rays 3, 6 are the light emitted by the two corresponding display units, and the three sets of light pass through the human eye 20 and meet at the same distance image surface 30 in the eye, and the human feeling The object points corresponding to these points are also on the same object surface 40. Also shown in FIG. 3 is the object focus M and the image focus N, which will not be described here.
  • the display panel displays pixels having a plurality of display distances, so the display unit 101 needs to be set to several different distances.
  • the light rays 1 and 6 are light rays emitted by two corresponding display units
  • the light rays 2 and 5 are light rays emitted by two corresponding display units
  • the light rays 3 and 4 are light rays emitted by two corresponding display units.
  • only pixel points having different display distances are displayed on one position on the display panel, and the display panel can display pixel points of different display distances at various positions, thereby obtaining a complete picture.
  • the distance between two display units of the same pixel in the picture to be displayed is fixed, the distance of the displayed virtual object point from the human eye is also fixed (assuming that the human eye lens is an ideal lens, the actual situation According to the actual model of the human eye, the corresponding adjustment can be made; in addition, in different orientations, since the light rays corresponding to different virtual object points on the same object distance have different angles of the lens angle of the human eye, the two display units are optimized for the display effect. The distance between them can be slightly adjusted according to the actual situation), and at this time, pixel points having the same display distance in the picture to be displayed are formed.
  • the angle between the rays emitted by the corresponding display unit 101 is generally less than 1 degree.
  • the distance between the corresponding display units 101 is within the set range in the embodiment of the present invention.
  • the setting range of the distance between the corresponding display units 101 is 0.1-2.5 mm, and the control of the display distance is realized by selecting values of different sizes within the distance range.
  • the plurality of display unit groups 100 can be used for simultaneously displaying pixel points having the same display distance in a picture to be displayed, and can also be used for displaying at different times respectively. Pixels with different display distances.
  • the plurality of viewpoints corresponding to the plurality of display unit groups 100 may be arranged in an axisymmetric distribution manner, a central radial distribution manner, a spiral radiation distribution manner, and the like.
  • the plurality of viewpoints can be placed in the vicinity of the center of the pupil of the human eye when viewed by the user.
  • the axisymmetric distribution mode may include left-right symmetry or up-and-down symmetry;
  • the central radial distribution mode means that a plurality of viewpoints are distributed on a plurality of concentrically arranged circumferences, and a plurality of viewpoints are evenly distributed on each circumference;
  • the spiral radiation distribution means multiple The viewpoints are arranged in a spiral from the inside to the outside.
  • the display panel 10 includes four display unit groups 100
  • the lines of the two viewpoints corresponding to the four display unit groups 100 and the lines of the other two viewpoints intersect perpendicularly, and the four viewpoints are evenly distributed.
  • the display panel including the four display unit groups 100 is convenient in design and can meet the human eye viewing requirements, and the viewpoint distribution of the four display unit groups 100 is designed such that the four viewpoints are evenly distributed in the vicinity of the center of the human eye pupil, avoiding The distance between the viewpoints is too dense to interfere with each other.
  • the distance between any two adjacent viewpoints needs to be Less than 2.5mm.
  • the design can be sequentially performed.
  • the distance between the pupil of the human eye and the display panel is d
  • the display panel converges the light to two points A and B near the pupil, and the distances of A and B from the center of the pupil are respectively
  • S A and S B the light rays a and b emitted by the two corresponding display units on the display panel are respectively concentrated to the viewpoints A and B, and the distance between the two display units and the perpendicular line L connecting the pupil and the display panel respectively
  • the inclination angles of the light emitted by the two display units with respect to the perpendicular line L connecting the pupil and the display panel are arctan((h a -S A )/d) and arctan((h), respectively. b +S B ) / d).
  • the display panel in order to control the emitted light of each display unit in the display panel, the display panel includes a light-emitting control layer configured to control the plurality of display units 100 of the display panel to be generated.
  • the color and direction of the light rays cause the light emitted by the plurality of display units 100 to illuminate the corresponding viewpoint of the human eye in the set color and the set direction; or control the direction of the light generated by the display unit of the display panel.
  • the light extraction control layer may include a grating structure, a grating waveguide coupling Structure or microlens array.
  • the control of the color of the light generally depends on the color film or the light-emitting unit of the display panel, but can also be realized by the light-emitting control layer in the embodiment of the invention.
  • the display panel may include a liquid crystal display panel, and the grating structure may be disposed on the backlight portion of the liquid crystal display panel, and the display unit for controlling the display panel will set the light having the set color from the set position.
  • the setting direction is emitted; or the display unit that controls the display panel emits light from the set position in the set direction.
  • the display panel 10 may include a liquid crystal display panel or an organic light emitting diode display panel, and the grating structure may be disposed on the liquid crystal display panel or the organic light emitting diode display panel.
  • a side-entry backlight may be employed as the backlight device.
  • the display unit 101 includes at least one pixel.
  • the display unit 101 may include a plurality of pixels, and may also include fewer pixels.
  • one display unit group is formed by setting more display units to meet display requirements.
  • the directions of the light rays generated by the two or more pixels are the same.
  • each pixel includes three sub-pixels.
  • the sub-pixel arrangement manner of the display panel may include: a conventional strip electrode arrangement manner (three sub-pixels in each pixel are disposed in the same row, and each sub-pixel may have a long strip shape and a long strip shape The length direction is the same as the row direction, or perpendicular to the row direction), the triangular dot matrix arrangement (three sub-pixels are set at the three vertices of the triangle), and the BV3 arrangement mode (a type of the triangular dot array arrangement, adjustment)
  • the sub-pixels have a shape pitch or the like such that adjacent sub-pixels of the same color form an equilateral triangle or the like.
  • FIG. 5 is a schematic view showing a distribution of display units of a display panel according to another embodiment of the present invention
  • FIG. 6 is a schematic view showing an optical path distribution of the display panel shown in FIG. 5.
  • the display panel 10 includes a first display area 10A and a second display area 10B.
  • the light generated by the display unit 101 of the first display area 10A and the second display area 10B is respectively irradiated to the two eyes 200 of the user (see FIG. 6). In the light path map).
  • Each display unit 101 of the first display area 10A has a one-to-one correspondence with each display unit 101 of the second display area 10B, and the first display area 10A and the second display area 10B respectively display a binocular parallax screen of the same display scene, that is, the same display.
  • the scene can be viewed through different eyes that can be seen by both eyes.
  • the focus position of the single eye and the convergence position of the binocular line of sight can be coincident, thereby avoiding the problem that the user has dizziness due to a large difference between the focus position of the single eye and the convergence position of the binocular line of sight in the existing parallax 3D technology.
  • the two display areas respectively correspond to the pictures viewed by the two eyes, and the pictures displayed by the two display areas may be obtained by the correspondingly arranged cameras.
  • the display panel includes two separate sub-display panels, and the first display area 10A and the second display area 10B are respectively located on two separate sub-display panels. In an alternative embodiment, the first display area 10A and the second display area 10B are two display areas on the display panel.
  • a display device comprising the display panel of any of the above embodiments.
  • the display device can be any product or component having a near-eye 3D display function, such as a virtual/augmented reality head-mounted display device.
  • the display device provided by the embodiment of the present invention has the same technical features as any of the above display panels, the same technical problem can be solved and the same technical effects are produced.
  • the display panel and the display device of the above-described embodiments of the present invention by providing at least two display unit groups in the first display area, all of the display units belonging to different display unit groups are configured to be capable of generating the same eye respectively condensed to the user
  • the driving circuit drives the display units of the at least two display unit groups, so that at least two display unit groups of the display panel display the same view scene can be viewed at the corresponding viewing point; belonging to different display unit groups
  • the image can be imaged on the retina of the human eye through different viewpoints, and the degree of focus is adjusted to a suitable degree by the lens of the human eye. These images can form a clear retinal image, achieving monocular focusing and 3D display.
  • the monocular focus is no longer on the display screen, but is focused on the displayed 3D scene.
  • the focus position of the single eye and the convergence position of the binocular line of sight can be coincident, thus avoiding the monocular
  • the focus distance and the convergence distance of the eyes are inconsistent, and the wearer does not experience discomfort such as dizziness.

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Abstract

一种显示面板（10）和显示装置，属于显示技术领域。显示面板（10）包括第一显示区域（10A）和驱动电路。第一显示区域（10A）包括至少两个显示单元组（100），每个显示单元组（100）包括至少一个显示单元（101）；第一显示区域（10A）的所有显示单元（101）被构造成产生汇聚到用户的同一只眼睛（200）中的光线（101A、101B）；属于同一个显示单元组（100）的所有显示单元（101）被构造成产生汇聚到用户的同一只眼睛（200）上的同一视点（A、B）的光线，属于不同的显示单元组（100）的显示单元（101）被构造成产生分别汇聚到用户的同一只眼睛（200）上的不同视点（A、B）的光线。驱动电路驱动至少两个显示单元组（100）的显示单元（101），使得至少两个显示单元组（100）显示表示同一显示场景的、在各自的视点（A、B）观看到的画面。显示面板（10）避免了近眼显示装置中单眼的聚焦距离和双眼的汇聚距离不一致的现象。

Description

显示面板和显示装置 技术领域
本发明的至少一种实施例涉及显示技术领域，特别涉及一种显示面板和显示装置。
背景技术
随着谷歌眼镜、虚拟现实(英文：Virtual Reality，简称：VR)、增强现实(英文：Augmented Reality，简称：AR)头盔等产品的推出，近眼显示技术正越来越多的应用到显示技术中。
一种用于实现3D显示的近眼显示装置通常包括对应用户左眼的左显示区域和对应用户右眼的右显示区域，通过在左、右两个显示区域显示相同场景的不同视差画面，利用人的双眼的视差实现3D显示效果。但是这种近眼显示装置由于仅利用了双眼的视差，单眼的聚焦位置均处在显示屏上，而不是聚焦在所显示的3D场景上，出现了单眼的聚焦距离和双眼的汇聚距离不一致的问题，而真实世界中两者是一致的，所以佩戴者会出现眩晕等不适的情况。
发明内容
为了解决现有近眼显示装置中单眼的聚焦距离和双眼的汇聚距离不一致的上述或者其它问题，本发明实的至少一种施例提供了一种显示面板和显示装置。
根据本发明的一个方面的实施例，提供了一种显示面板，包括第一显示区域和驱动电路。第一显示区域包括至少两个显示单元组，每个所述显示单元组包括至少一个显示单元；所述第一显示区域的所有显示单元被构造成产生汇聚到用户的同一只眼睛中的光线；属于同一个显示单元组的所有显示单元被构造成产生汇聚到用户的同一只眼睛上的同一视点的光线，属于不同的显示单元组的显示单元被构造成产生分别汇聚到用户的同一只眼睛上的不同视点的光线。驱动电路被构造成驱动所述至少两个显示单元组的显示单元，使得所述至少两个显示单元组显示表示同一显示场景的、在各自的视点观看到的画面。
根据本发明的一种实施例的显示面板，每个所述显示单元组的显示单元均 匀分布在所述第一显示区域内。
根据本发明的一种实施例的显示面板，所述至少两个显示单元组对应的视点中，任意相邻的两个视点的之间的距离小于2.5mm。
根据本发明的一种实施例的显示面板，所述驱动电路被构造成用于产生将被输入至至少两个所述显示单元组的显示单元的驱动信号，以驱动所述显示单元。
根据本发明的一种实施例的显示面板，所述驱动电路被构造成用于产生画面信息，所述画面信息包括表示待显示画面的像素点的颜色和亮度的信息、表示所述像素点的显示距离的信息；所述驱动电路还根据所述画面信息生成驱动信号，以驱动所述至少两个显示单元组的显示单元。
根据本发明的一种实施例的显示面板，所述驱动电路进一步被构造成：用于根据所产生的所述画面信息将所述待显示画面按照显示距离划分为多个组像素点；根据每组像素点的显示距离，确定在两个或多个显示单元组中显示每组像素点时，所采用的属于两个或多个显示单元组的任意两个显示单元之间的距离；根据所确定的任意两个显示单元之间的距离，确定显示单元组的显示单元应当显示的画面；将所述应当显示的画面对应的驱动信号写入到显示单元中。
根据本发明的一种实施例的显示面板，所述显示单元组对应的多个视点采用轴对称分布方式、中心放射状分布方式或螺旋状放射分布方式排布。
根据本发明的一种实施例的显示面板，所述显示面板包括四个显示单元组，所述四个显示单元组对应的四个视点中两个视点的连线和另外两个视点的连线垂直相交，且所述四个视点均匀分布在两条连线的交点的周围。
根据本发明的一种实施例的显示面板，还包括出光控制层，所述出光控制层被构造成用于控制所述显示单元产生的光线的颜色和方向，或控制所述显示单元产生的光线的方向。
根据本发明的一种实施例的显示面板，所述显示单元包括两个以上像素，所述两个以上像素产生的光线的方向相同。
根据本发明的一种实施例的显示面板，还包括第二显示区域，所述第一显示区域和所述第二显示区域的显示单元产生的光线分别照射到用户的两只眼睛中，且所述第一显示区域与所述第二显示区域分别显示表示同一显示场景的双眼视差画面。
根据本发明的一种实施例的显示面板，所述显示面板包括两个独立的子显示面板，所述第一显示区域和所述第二显示区域分别位于两个独立的子显示面板上；或者，所述第一显示区域和所述第二显示区域为所述显示面板上的两个显示区域。
根据本发明另一方面的实施例，提供了一种显示装置，所述显示装置包括上述任一实施例所述的显示面板。
在根据本发明上述实施例的显示面板和显示装置中，通过在第一显示区域设置至少两个显示单元组，属于不同显示单元组的所有显示单元被构造成能够产生分别汇聚到用户的同一只眼睛上的不同视点中的光线，驱动电路驱动至少两个显示单元组的显示单元，使得显示面板的至少两个显示单元组显示同一显示场景在对应视点所能观看到的画面；属于不同显示单元组的图像可以透过不同视点分别在人眼视网膜上成像，通过人眼的晶状体将聚焦程度调节到合适程度，这些像可以形成一幅清晰的视网膜像，实现了单眼聚焦、3D显示的效果。此时单眼聚焦不再处在显示屏幕上，而是聚焦在所显示的3D场景上，和视差3D技术结合后，可以使得单眼的聚焦位置和双眼视线的汇聚位置重合，这样就避免了单眼的聚焦距离和双眼的汇聚距离不一致的问题，佩戴者不会出现眩晕等不适情况。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1A是根据本发明的一种实施例的显示面板的示意图；
图1B是根据本发明的一种实施例的显示面板的生成3D画面的原理示意图；
图2是根据本发明的一种实施例的显示单元的分布示意图；
图3是根据本发明的一种实施例的显示面板的光路分布示意图；
图4是根据本发明的另一种实施例的显示面板的光路分别示意图；
图5是根据本发明的另一种实施例的显示面板的显示单元的分布示意图；以及
图6是图5所示的显示面板的光路分布示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明实施方式作进一步地详细描述。
另外，在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本披露实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。
根据本发明实施例的总体上的发明构思，提供了一种显示面板，包括第一显示区域和驱动电路，第一显示区域包括至少两个显示单元组，每个显示单元组包括至少一个显示单元。各个显示单元组中显示单元的数量相同或不同。第一显示区域的所有显示单元被构造成产生汇聚到用户的同一只眼睛中的光线。属于同一个显示单元组的所有显示单元被构造成产生汇聚到用户的同一只眼睛上的同一视点的光线，属于不同显示单元组的显示单元被构造成产生分别汇聚到用户的同一只眼睛上的不同视点中的光线。也就是说，属于不同显示单元组的显示单元产生的光线分别汇聚到人眼的至少两个视点中，而不会汇聚到同一视点中。
驱动电路被构造成驱动至少两个显示单元组的显示单元，使得至少两个显示单元组显示表示同一显示场景的、在各自的视点观看到的画面。其中，由驱动电路驱动的至少两个显示单元组可以包括显示面板上的全部或部分显示单元组。上述显示场景对应一幅3D画面，在每个视点所能观看到的画面为2D画面。例如，显示场景可以包括景、物、人等内容，在两个视点观测到的2D画面分别是从两个方向观看该显示场景得到的画面。
可以理解，同一显示场景是指由一幅3D画面所表示的现实中的场景，在现实中用户同一只眼睛的各个视点、以及不同眼睛观看该同一显示场景会得到不同的画面。每一幅画面可以透过人眼瞳孔上的多个视点分别在视网膜上成像，人眼将晶状体调整到合适聚焦状态，将多个视点的视网膜成像合成一幅清晰的像，从而可以实现单眼聚焦、3D显示的效果。
图1A是根据本发明的一种实施例的显示面板的示意图。本领域的技术人员能够理解，通过以双视点情况下显示面板包括两个显示单元组为例对本发明的 实施例进行说明，可以推导出在多视点的情况下显示面板包括与所述多个视点分别对应的多个显示单元组。
根据本发明的一种示例性实施例，参见图1A，显示面板10包括第一显示区域，第一显示区域包括2个显示单元组100，每个显示单元组100包括至少一个显示单元101。第一显示区域的所有显示单元101被构造成产生分别汇聚到用户的同一只眼睛200中的两个视点上的光线101A和101B，光线101A和101B分别到达眼睛的瞳孔(图1A中标号201)上(或瞳孔附近)的视点A和B。第一显示区域的显示单元101在两个显示单元组100中平均分配，且分别属于两个显示单元组100的显示单元101交替分布(但不限于此)。与两个视点A和B分别对应的显示单元组100分别产生表示同一显示场景的不同画面。值得说明的是，图1A中显示面板内的黑点表示省略的显示单元101。
图1B是根据本发明的一种实施例的显示面板的生成3D画面的原理示意图，图中示出的3D画面包括标号为1～5的五个点。显示面板10上属于两个显示单元组100的五个显示单元101分别显示这五个点，人眼通过两个视点A和B看到这五个点，在每个视点A或B处观看到的2D画面，每一幅画面可以透过人眼瞳孔上的两个视点分别在视网膜上成像，人眼将晶状体调整到合适聚焦状态，将多个视点的视网膜成像合成一幅清晰的像，从而形成3D画面。
图1B所示的3D画面中，1、2和5三个点的显示距离相等，两个显示单元组100中用于显示标号为1的点的两个显示单元之间的距离、用于显示标号为2的点的两个显示单元之间的距离和用于显示标号为5的点的两个显示单元之间的距离相等。同理，两个显示单元组100中用于显示标号为3的点的两个显示单元的之间距离和用于显示标号为4的点的两个显示单元之间的距离相等。两个显示单元组100中，用于显示标号为1的点的两个显示单元之间的距离和用于显示标号为3的点的两个显示单元之间的距离不相等。
例如，从单个显示单元101看，视点是指光线101A或101B照射到人眼瞳孔(图1A中标号201)上或瞳孔附近的落点的位置；从显示面板整体看，视点是指从整个显示面板所发出的光线101A或101B在人眼瞳孔(图1A中标号201)上或瞳孔附近形成的各个汇聚点；上述一个视点可以是瞳孔上的一个点或区域。根据本发明的实施例的显示面板，通过在第一显示区域设置至少两个显示单元组100，至少两个显示单元组100分别对应于人眼上的至少两个视点，至少两个 显示单元组100分别产生表示同一显示场景的在至少两个视点所能观看到的不同画面，并且将这些画面分别汇聚到至少两个视点上。通过按照上述方式显示这些画面，使得人眼的晶状体处在某一汇聚状态时(该汇聚状态为人眼在现实环境中观察对应于显示场景的真实场景时所具有的状态)，这些画面通过人眼光学***成像后在视网膜上形成一幅共同的像(该像为人眼在现实环境中观察对应于显示场景的真实场景时所形成的视网膜上的像)，即实现了单眼的聚焦、3D显示的效果。人眼可以通过改变晶状体的聚焦状态实现对显示场景的选择性聚焦，达到了可以选择不同距离、不同方位、不同景深的选择性观看；其中选择性聚焦可以是选择聚焦两幅画面的不同位置进行聚焦，也可以是选择多幅画面中的两幅进行聚焦。另外，此时单眼聚焦不再处在显示屏幕上，而是聚焦在所显示的3D场景上，当根据本发明的实施例的显示面板和双眼视差3D技术结合时，就可以解决双眼视差3D技术中单眼的聚焦距离和双眼的汇聚距离不一致的问题，大大降低佩戴者出现眩晕等不适问题的可能。
本发明实施例中的显示单元101均为指向型显示单元，指向型显示单元是指显示单元被构造成能够产生与显示面板具有设定大小的夹角的光线。
在一种实施例中，每个显示单元组100的显示单元101均匀分布在第一显示区域内，每个显示单元组100对应一个视点。均匀分布是指将第一显示区域内分为多个子区域，属于一个显示单元组100的显示单元101在各个子区域内均匀布置。例如，相邻的两个显示单元101可以分别属于对应不同视点的两个显示单元组100，或者属于对应相同视点的一个显示单元组100。通常地，可以采用交替排列的方式对属于不同显示单元组100的显示单元101进行排布。在一种示例性实施例中，参照图2(以四视点情况为例)，标号为1～4的显示单元101分别属于对应四个不同视点的显示单元组100。每个显示单元组100的显示单元101均匀分布在第一显示区域内，这样每个显示单元组都能够形成相同大小的画面。
在本发明实施例中，驱动电路被构造成用于驱动显示面板上的显示单元101进行画面显示，使得多个显示单元组100分别显示表示同一显示场景的、在与所述多个显示单元组100对应的多个视点所能观看到的画面。
根据本发明实施例的显示面板的驱动电路包括以下两种驱动方式。
在第一种驱动方式下，驱动电路被构造成用于产生将被输入至至少两个显 示单元组100的显示单元101的驱动信号，以驱动显示单元101。输入至显示单元101的驱动信号用做用于驱动显示单元101的像素的驱动电压。
在这种第一种驱动方式中，既可以同时显示画面中具有不同显示距离的像素点，也可以采用分时方式每次显示具有一种显示距离的像素点。
在第二种驱动方式中，驱动电路被构造成用于产生画面信息，画面信息包括表示待显示画面的像素点的颜色和亮度的信息，以及表示像素点的显示距离的信息；驱动电路进一步根据画面信息生成驱动信号，以驱动至少两个显示单元组100的显示单元101。
在本发明的实施例中，显示距离是指3D画面中，人眼观看到的点到人眼的距离。
在一种实施例中，驱动电路根据所产生的画面信息将待显示画面按照显示距离划分为多个组像素点；根据每组像素点的显示距离，确定在两个或多个显示单元组100中显示每组像素点时，所采用的两个或多个显示单元101中任意两个显示单元101之间的距离(后文简称对应的显示单元101之间的距离，每组像素点中所有像素点的任意两个对应的显示单元101之间的距离相等)；根据每组像素点显示时所采用的任意两个显示单元101之间的距离，确定显示单元组100的显示单元101应当显示的画面；将应当显示的画面对应的驱动信号写入到显示单元101中。
在第二种驱动方式中，驱动电路根据画面信息中用于描述像素点的显示距离的信息，确定显示单元组100的显示单元101应当显示的画面。以利用两个显示单元组100显示一组像素点为例，根据待显示画面可以确定第一显示单元组的显示单元101应当显示的画面，然后根据显示距离，确定第一显示单元组的显示单元101在第二显示单元组中对应的显示单元101；第一显示单元组的显示单元101在第二显示单元组中对应的显示单元101与第一显示单元组的显示单元101显示相同画面。
和第一种驱动方式类似，第二种驱动方式也包括两种显示模式：第一种模式是分时显示模式，即不同时刻显示具有不同显示距离的像素点，通过将具有不同显示距离的像素点叠加得到一定景深范围内的3D图像；第二种模式是同时显示模式，即在同一时刻显示一定景深范围内的3D图像。
由于第一种显示模式下，同一时刻显示面板只显示具有相同显示距离的像 素点，通过多次显示可以将所有像素点显示出来，显示分辨率较高，但响应速度较慢；在第二种显示模式下，在同一时刻显示面板显示待显示画面的所有像素点，因此响应速度更快，但分辨率有所下降(可能需要舍弃部分像素点才能实现)。
由于第一种显示模式下，同一时刻显示面板只显示相同具有显示距离的像素点，所以在确定出两个显示单元101之间的距离后，按照此距离以及需要显示的像素点的位置分布，在显示面板上确定这两个显示单元。以利用两个显示单元组显示一组像素点为例，如图3所示，光线1、4为两个对应的显示单元发出的光线(用于显示待显示画面上的同一像素点)，光线2、5为两个对应的显示单元发出的光线，光线3、6为两个对应的显示单元发出的光线，三组光线经过人眼20后交汇在眼内同一距离像面30上，人感觉到这些点对应的物点也在同一物面40上。图3中还示出了物方焦点M和像方焦点N，这里不做赘述。
第二种显示模式下，在同一时刻显示面板显示具有多种显示距离的像素点，因此需要将显示单元101设置成几种不同的距离。如图4所示，光线1、6为两个对应的显示单元发出的光线，光线2、5为两个对应的显示单元发出的光线，光线3、4为两个对应的显示单元发出的光线。图4所示，仅为对显示面板上一个位置显示具有不同显示距离的像素点进行举例，该显示面板在各个位置均能显示不同显示距离的像素点，从而得到完整画面。
值得说明的是，当固定待显示画面中同一像素点的两个显示单元之间的距离时，所显示的虚拟物点距离人眼的距离也被固定(假定人眼晶状体为理想透镜，实际情况可依据人眼实际模型进行相应调整；另外，不同方位上，由于对应同一物距上的不同虚拟物点的光线对人眼晶状体张角的存在差异，因此为了优化显示效果，上述两个显示单元之间的距离可以根据实际情况稍作调整)，此时形成待显示画面中具有相同显示距离处的像素点。在选取对应的显示单元101时，对应的显示单元101发出的光线之间的夹角，一般小于1度。
由于待显示画面中像素点的显示距离与对应的显示单元101之间的距离是对应的，因此在本发明实施例中，对应的显示单元101之间的距离处于设定范围内。
进一步地，对应的显示单元101之间的距离的设定范围为0.1-2.5mm，通过在距离范围内选择不同大小的数值，从而实现对显示距离的调控。
对于具有多个显示单元组100的显示面板而言，所述多个显示单元组100既可以用于同时显示待显示画面中具有同一显示距离的像素点，也可以用于分别在不同时刻显示具有不同显示距离的像素点。
进一步地，当显示面板10包括多个显示单元组100时，多个显示单元组100对应的多个视点可以采用轴对称分布方式、中心放射状分布方式、螺旋状放射分布方式等方式排布，从而使得用户观看时多个视点能够处于人眼瞳孔中心的附近。轴对称分布方式可以包括左右对称或者上下对称；中心放射状分布方式是指多个视点分布在同心设置的多个圆周上，且每个圆周上均匀分布若干视点；螺旋状放射分布方式是指多个视点从内向外按照螺旋状排布。
例如，当显示面板10包括四个显示单元组100时，四个显示单元组100对应的四个视点中两个视点的连线和另外两个视点的连线垂直相交，且四个视点均匀分布在两条连线的交点的周围。包括四个显示单元组100的显示面板，设计方便，也能够满足人眼观看需求，且这样设计四个显示单元组100的视点分布，使得四个视点均匀分布在人眼瞳孔中心的附近，避免视点距离太密集造成的彼此干扰。
本发明实施例中，由于一般照明状态下，人眼瞳孔最大直径约为2.5mm，因此，为保证同一时刻至少有两个视点的画面进入瞳孔，任意相邻的两个视点之间的距离需要小于2.5mm。
在设计各个显示单元101的出光方向时，可以依次进行设计。以两个视点的情况为例，参见图1A，人眼瞳孔距离显示面板的距离为d，该显示面板将光线汇聚到瞳孔附近的两个点A和B，A和B距离瞳孔中心的距离分别为SA和SB，显示面板上两个对应的显示单元发出的光线a和b分别汇聚到视点A和B，这两个显示单元与连接瞳孔和显示面板的垂线L之间的距离分别为ha和hb，此时这两个显示单元所发出的光线相对于连接瞳孔和显示面板的垂线L的倾角分别为arctan((ha-SA)/d)以及arctan((hb+SB)/d)。
在本发明实施例中，为了实现对显示面板中各个显示单元的发出的光进行控制，该显示面板中包括出光控制层，出光控制层被构造成用于控制显示面板的多个显示单元100产生的光线的颜色和方向，使得多个显示单元100发出的光线以设定颜色和设定方向照射到人眼对应视点上；或者控制显示面板的显示单元产生的光线的方向。例如，出光控制层可以包括光栅结构、光栅波导耦合 结构或微透镜阵列。光线的颜色的控制一般依赖于显示面板的彩膜或发光单元，但在本发明实施例中也可以通过出光控制层来实现。
在一种实施例中，显示面板可以包括液晶显示面板，此时光栅结构可以设置在液晶显示面板的背光部分，用于控制显示面板的显示单元将具有设定颜色的光从设定位置上以设定方向射出；或者，控制显示面板的显示单元将光从设定位置上以设定方向射出。显示面板10可以包括液晶显示面板或有机发光二极管显示面板，此时光栅结构可以设置在液晶显示面板或有机发光二极管显示面板之上。为了减小显示面板的厚度，在上述液晶显示面板中，可以采用侧入式背光源作为背光装置。
在本发明实施例中，显示单元101包括至少一个像素。显示单元101可以包括多个像素，也可以包括较少的像素。当显示单元包括较少的像素时，通过设置较多的显示单元组成一个显示单元组，以满足显示需要。
进一步地，在显示单元101包括两个以上像素时，两个以上像素产生的光线的方向相同。
在一种实施例中，每个像素包括三个子像素。该显示面板的的子像素排布方式可以包括：常规的条状电极排布方式(每个像素中的三个子像素设置在同一行，每个子像素的形状可以为长条形，长条形的长度方向与行方向相同，或者与行方向垂直)、三角点阵排布方式(三个子像素设置在三角形的三个顶点处)、BV3排布方式(三角点阵列排布方式的一种，调整子像素的形状间距等，使得相邻的相同颜色的子像素形成正三角形)等。
图5是根据本发明的另一种实施例的显示面板的显示单元的分布示意图；图6是图5所示的显示面板的光路分布示意图。参见图5，显示面板10包括第一显示区域10A第二显示区域10B，第一显示区域10A和第二显示区域10B的显示单元101产生的光线分别照射到用户的两只眼睛200(参见图6的光路图)中。第一显示区域10A的各显示单元101与第二显示区域10B的各显示单元101一一对应，且第一显示区域10A与第二显示区域10B分别显示同一显示场景的双眼视差画面，即同一显示场景通过双眼所能观看到的不同的画面。通过显示画面的调整，可以使得单眼的聚焦位置和双眼视线的汇聚位置重合，从而避免现有视差3D技术中由于单眼的聚焦位置和双眼视线的汇聚位置差别较大造成用户眩晕的问题。
由于人的双眼处在不同的位置，观看同一显示场景时，观看的方位不同，因此通过双眼所能观看到的不同的画面。而对于显示面板而言，两个显示区域分别对应显示双眼观看到的画面，两个显示区域显示的画面可以是通过对应布置的相机拍摄得到的。
在一种实施例中，显示面板包括两个独立的子显示面板，第一显示区域10A和第二显示区域10B分别位于两个独立的子显示面板上。在一种可替换的实施例中，第一显示区域10A和第二显示区域10B为显示面板上的两个显示区域。
根据本发明另一方面的实施例，提供了一种显示装置，该显示装置包括上述任一实施例所述的显示面板。
该显示装置可以为虚拟/增强现实头戴显示器设备等任何具有近眼3D显示功能的产品或部件。
由于本发明实施例提供的显示装置与上述任一种显示面板具有相同的技术特征，所以也能解决同样的技术问题，产生相同的技术效果。
根据本发明的上述实施例的显示面板和显示装置，通过在第一显示区域设置至少两个显示单元组，属于不同显示单元组的所有显示单元被构造成能够产生分别汇聚到用户的同一只眼睛上的不同视点中的光线，驱动电路驱动至少两个显示单元组的显示单元，使得显示面板的至少两个显示单元组显示同一显示场景在对应视点所能观看到的画面；属于不同显示单元组的图像可以透过不同视点分别在人眼视网膜上成像，通过人眼的晶状体将聚焦程度调节到合适程度，这些像可以形成一幅清晰的视网膜像，实现了单眼聚焦、3D显示的效果。此时单眼聚焦不再处在显示屏幕上，而是聚焦在所显示的3D场景上，和视差3D技术结合后，可以使得单眼的聚焦位置和双眼视线的汇聚位置重合，这样就避免了单眼的聚焦距离和双眼的汇聚距离不一致的问题，佩戴者不会出现眩晕等不适情况。
以上仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

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  1. 一种显示面板，包括：
    第一显示区域，所述第一显示区域包括至少两个显示单元组，每个所述显示单元组包括至少一个显示单元；所述第一显示区域的所有显示单元被构造成产生汇聚到用户的同一只眼睛中的光线；属于同一个显示单元组的所有显示单元被构造成产生汇聚到用户的同一只眼睛上的同一视点的光线，属于不同的显示单元组的显示单元被构造成产生分别汇聚到用户的同一只眼睛上的不同视点的光线；以及
    驱动电路，被构造成驱动所述至少两个显示单元组的显示单元，使得所述至少两个显示单元组显示表示同一显示场景的、在各自的视点观看到的画面。
  2. 根据权利要求1所述的显示面板，其中，每个所述显示单元组的显示单元均匀分布在所述第一显示区域内。
  3. 根据权利要求1或2所述的显示面板，其中，所述至少两个显示单元组对应的视点中，任意相邻的两个视点的之间的距离小于2.5mm。
  4. 根据权利要求1至3中任一项所述的显示面板，其中，所述驱动电路被构造成用于产生将被输入至至少两个所述显示单元组的显示单元的驱动信号，以驱动所述显示单元。
  5. 根据权利要求1至4中任一项所述的显示面板，其中，所述驱动电路被构造成用于产生画面信息，所述画面信息包括表示待显示画面的像素点的颜色和亮度的信息、表示所述像素点的显示距离的信息；所述驱动电路还根据所述画面信息生成驱动信号，以驱动所述至少两个显示单元组的显示单元。
  6. 根据权利要求5所述的显示面板，其中，所述驱动电路进一步被构造成：用于根据所产生的所述画面信息将所述待显示画面按照显示距离划分为多个组像素点；根据每组像素点的显示距离，确定在两个或多个显示单元组中显示每组像素点时，所采用的属于两个或多个显示单元组的任意两个显示单元之间的距离；根据所确定的任意两个显示单元之间的距离，确定显示单元组的显示单元应当显示的画面；将所述应当显示的画面对应的驱动信号写入到显示单元中。
  7. 根据权利要求1至6中任一项所述的显示面板，其中，所述显示单元组对应的多个视点采用轴对称分布方式、中心放射状分布方式或螺旋状放射分布 方式排布。
  8. 根据权利要求1至7中任一项所述的显示面板，其中，所述显示面板包括四个显示单元组，所述四个显示单元组对应的四个视点中两个视点的连线和另外两个视点的连线垂直相交，且所述四个视点均匀分布在两条连线的交点的周围。
  9. 根据权利要求1至8中任一项所述的显示面板，还包括出光控制层，所述出光控制层被构造成用于控制所述显示单元产生的光线的颜色和方向，或控制所述显示单元产生的光线的方向。
  10. 根据权利要求1至9中任一项所述的显示面板，其中，所述显示单元包括两个以上像素，所述两个以上像素产生的光线的方向相同。
  11. 根据权利要求1至10中任一项所述的显示面板，还包括第二显示区域，所述第一显示区域和所述第二显示区域的显示单元产生的光线分别照射到用户的两只眼睛中，且所述第一显示区域与所述第二显示区域分别显示表示同一显示场景的双眼视差画面。
  12. 根据权利要求11所述的显示面板，其特征在于，所述显示面板包括两个独立的子显示面板，所述第一显示区域和所述第二显示区域分别位于两个独立的子显示面板上；或者，所述第一显示区域和所述第二显示区域为所述显示面板上的两个显示区域。
  13. 一种显示装置，包括权利要求1至12中任一项所述的显示面板。
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