WO2016004727A1 - 显示装置及其驱动方法 - Google Patents

显示装置及其驱动方法 Download PDF

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Publication number
WO2016004727A1
WO2016004727A1 PCT/CN2014/093063 CN2014093063W WO2016004727A1 WO 2016004727 A1 WO2016004727 A1 WO 2016004727A1 CN 2014093063 W CN2014093063 W CN 2014093063W WO 2016004727 A1 WO2016004727 A1 WO 2016004727A1
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WIPO (PCT)
Prior art keywords
sub
display screen
display device
grating
display
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Application number
PCT/CN2014/093063
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English (en)
French (fr)
Inventor
林家强
武延兵
Original Assignee
京东方科技集团股份有限公司
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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 US14/652,983 priority Critical patent/US9846320B2/en
Publication of WO2016004727A1 publication Critical patent/WO2016004727A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1323—Arrangements for providing a switchable viewing angle
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133502—Antiglare, refractive index matching layers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G02F2201/305—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating diffraction grating
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/068—Adjustment of display parameters for control of viewing angle adjustment
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2358/00—Arrangements for display data security
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • Embodiments of the present invention relate to a display device and a method of driving the same.
  • flat display devices have been able to display a variety of functions, such as dual field of view display, anti-spy display, 3D display and the like.
  • Dual field of view display refers to the display technology that can see different images on both sides of the same display device (such as the left and right sides).
  • the existing dual field of view display mainly by setting the grating in front of the display screen, and separating the display light to the two sides of the display screen by using the light-transmissive area and the light-shielding area alternately arranged on the grating, so that the observers on both sides can see Different pixels for dual field of view display.
  • the normal display area can be limited to a narrow front viewing area by providing a grating in front of the display screen.
  • the observer can see the normally displayed image within a certain range of viewing angle (for example, the viewing angle is less than 60 degrees). If the angle of view exceeds the range (such as the angle of view is greater than 60 degrees), the observed image is a full black image.
  • This technology has a certain role in protecting privacy.
  • An embodiment of the present invention provides a display device and a driving method thereof.
  • the display device provided by the embodiment of the present invention has a dual field of view display function and a privacy display function.
  • At least one embodiment of the present invention provides a display device including: a display screen including a plurality of sub-pixels arranged in a matrix, the color of the sub-pixels in the same column including the display screen for display All of the required colors; a grating disposed above the display screen, including alternating light-transmissive regions and light-shielding regions, the light-transmissive regions being parallel to each of the columns of sub-pixels; a rolling structure located on the display screen Between the gratings; and a pushing mechanism for pushing the grating and/or the display screen to switch the relative position of the grating and the display screen between the first state and the second state,
  • the display device switches between a dual field of view display and a privacy display.
  • the first state is that a vertical projection of the light-transmitting region on the display screen spans two adjacent columns of the sub-pixels, and completely or partially overlaps with an area where the adjacent two columns of the sub-pixels are located.
  • the second state Therefore, the vertical projection of the light-transmitting region on the display screen completely or partially overlaps with a region where the column of the sub-pixels is located.
  • the grating and/or the display screen are parallel to the sub-pixel The position of the plane is different.
  • the amount of change in the grating and/or the display screen moving in a direction parallel to the plane in which the sub-pixels are located may be half the width of the sub-pixel column.
  • the display device can also include a flexible sealant for bonding the display screen to the grating.
  • the display device can further include a fill fluid that is filled between the display screen and the grating.
  • the refractive index of the fill liquid is equal to the refractive index of the display screen.
  • the rolling structure can be a sphere, an ellipsoid or a cylinder.
  • the rolling structure can be a spherical spacer.
  • the rolling structure is evenly distributed between the display screen and the grating.
  • the particle size of the rolling structure is on the order of microns.
  • the push mechanism can include a robot for pushing the grating and/or the display screen, a motor coupled to the robot, the motor for powering the robot.
  • the push mechanism may include a plurality of robots that are respectively located on one side of opposite sides of the display device.
  • the push mechanism may further include a control circuit coupled to the motor, the control circuit for controlling the motor to drive the robot to push the grating and/or the display screen to be in the display device
  • the control circuit for controlling the motor to drive the robot to push the grating and/or the display screen to be in the display device
  • An embodiment of the present invention further provides a driving method of a display device for driving the display device of any of the above, the driving method comprising: causing the display when the display device needs to perform dual field of view display The device is in a first state, the plurality of sub-pixels including a first sub-pixel and a second sub-pixel, respectively applying signals belonging to different images to the first sub-pixel and the second sub-pixel; When the display device needs to perform the anti-spy display, the display device is placed in the second state, and signals belonging to the same image are applied to the plurality of sub-pixels.
  • the first state is that a vertical projection of the light-transmitting region on the display screen spans two adjacent columns of the sub-pixels, and completely or partially overlaps with an area where the adjacent two columns of the sub-pixels are located
  • the second state is that a vertical projection of the light transmissive area on the display screen is completely or partially overlapped with a region in which the column of sub-pixels is located.
  • FIG. 1 is a structural diagram of a display device according to an embodiment of the present invention.
  • FIG. 2 is a plan perspective view of a grating and a display screen in a dual field of view display of a display device according to an embodiment of the present invention
  • FIG. 3 is a light path diagram of a display device in dual field of view display according to an embodiment of the present invention.
  • FIG. 4 is a plan perspective view of a display device and a display screen during anti-spy display according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an optical path of a display device according to an embodiment of the present invention.
  • FIG. 6 is a plan perspective view of a grating and a display screen corresponding to a dual field of view display when each sub-pixel of the display device is arranged in another manner according to another embodiment of the present invention
  • FIG. 7 is a plan perspective view of a grating and a display screen corresponding to the anti-spy display when the sub-pixels of the display device are arranged in another manner according to another embodiment of the present invention.
  • 10-display screen 11-grating; 12-rolling structure; 13-filling liquid; 15--flexible frame glue; 101-first substrate; 102-thin film transistor; 103-liquid crystal; 104-spacer; 105-sub-pixel 106-black matrix; 107-second substrate; 111-third substrate; 112-light-shielding region; 113-transmissive region; 30-pushing mechanism; 301-manipulator; 302-motor; 303-control circuit; One sub-pixel; 1052-second sub-pixel.
  • the inventors have noticed in the research that how to integrate a plurality of functions into one display device has become one of the research directions in the field based on display technologies with different functions.
  • the embodiment provides a display device.
  • the display device includes a display screen 10 , a grating 11 , a rolling structure 12 , and a pushing structure 30 .
  • the display screen 10 includes a plurality of sub-pixels 105 arranged in a matrix, the colors of the sub-pixels 105 in the same column including all colors required for the display screen 10 to display;
  • the grating 11 is disposed above the display screen 10, and the grating 11 includes Alternatingly arranged light-transmitting regions 113 and light-shielding regions 112, the light-transmitting regions 113 are parallel to each column of sub-pixels 105;
  • the rolling structure 12 is located between the display screen 10 and the grating 11;
  • the pushing mechanism 30 is for pushing the grating 11 and/or
  • the display screen 10 switches the relative position of the grating 11 and the display screen 10 between the first state and the second state, thereby enabling the display device to switch between the dual field of view display and the anti-peep display
  • the first state may be that the vertical projection of the light-transmitting region 113 on the display screen 10 spans the adjacent two columns of sub-pixels 105 and completely or partially overlaps the region where the adjacent two columns of sub-pixels 105 are located.
  • the second state may be that the vertical projection of the light transmissive region 113 on the display screen 10 only completely or partially overlaps the region in which the columns of sub-pixels 105 are located.
  • the “light-transmitting area 113” may be a gap area between adjacent light-shielding areas 112 (as shown by the grating 11 in FIG. 1 ); or, the “light-transmitting area 113 ” may also be A stripe formed of a transparent material formed in a gap region between adjacent light-shielding regions 112.
  • the "above the display screen” refers to the side on which the display screen 10 performs image display.
  • the relative position of the grating 11 and the display screen 10 is in a first state, that is, the projection of the light transmitting region 113 on the display screen 10 spans two adjacent columns of sub-pixels. 105, and completely or partially overlaps the area where the adjacent two columns of sub-pixels 105 are located, and the plane perspective view of the grating 11 and the display screen 10 can be as shown in FIG.
  • each column of sub-pixels 105 in this embodiment includes all the colors (such as red R, green G, and blue B) required for the display screen 10 to be displayed, the sub-pixels exposed by each of the light-transmitting regions 113 are The color is not single, but includes sub-pixels of all colors, so it can be displayed.
  • the optical path diagram of the display device can be as shown in FIG.
  • Light rays A and B indicate that the sub-pixels that can be seen are the sub-pixels on the left side of the two columns of sub-pixels 105 exposed by one light-transmitting region 113
  • the light rays C and D represent the left side of the display device.
  • the sub-pixels that can be seen are the sub-pixels on the right side of the two columns of sub-pixels 105 exposed by one light-transmitting region 113.
  • signals belonging to different images are applied to the sub-pixels located on the left side and the sub-pixels located on the right side, respectively, so that the viewing angles on both sides of the display device can be presented with different images, thereby realizing dual field of view display.
  • the display device is parallel to the center line of one column of sub-pixels 105 as a boundary line, and the left side of the boundary line is the “left side” described in the embodiment, and the right side of the boundary line is as described in the embodiment. "right side”.
  • the display device can also implement dual field of view display at other viewing angles. For this reason, the display device provided by the person skilled in the art based on the embodiment can be deformed, and no longer Narration.
  • the relative position of the grating 11 and the display screen 10 is the second state, that is, the vertical projection of the light-transmitting region 113 on the display screen 10 is only completely or partially with the region where the column of sub-pixels 105 is located. overlapping.
  • a plan perspective view of the grating 11 and the display screen 10 can be as shown, for example, in FIG.
  • the light-transmitting region 113 between the adjacent two light-shielding regions 112 exposes only one column of sub-pixels 105, and the sub-pixel columns on both sides of the exposed sub-pixels 105 are blocked by the light-shielding region 112.
  • each column of sub-pixels 105 in this embodiment includes all the colors (such as red R, green G, and blue B) required for the display screen 10 to be displayed, the color of the exposed sub-pixels 105 is not a single color. Instead, sub-pixels of all colors are included, thereby enabling display.
  • the optical path diagram of the display device can be as shown in FIG.
  • the light rays E and F represent the inner view display device from the zero viewing angle and the small viewing angle range around the zero viewing angle, and the sub-pixels that can be seen are exposed by the light-transmitting region 113.
  • the light rays H and G indicate that the display device is viewed from a wide viewing angle range on the right side, and the sub-pixels located on the left side of the exposed column of sub-pixels 105 cannot be seen due to the complete occlusion of the light-shielding region 112.
  • Light rays I and J indicate that the display device is viewed from a wide viewing angle range on the left side, and the sub-pixels located on the right side of the exposed column of sub-pixels 105 cannot be seen due to the complete occlusion of the light-shielding region 112.
  • a signal belonging to the same image is applied to all of the sub-pixels 105 of the display device so that the displayed image can only be observed within a small viewing angle range around the zero viewing angle and the zero viewing angle.
  • the side angle of view is larger than a certain angle, the image cannot be observed, and the anti-spy display is realized.
  • the “viewing angle” described in this embodiment is the angle between the viewing line of sight and a line perpendicular to the plane of the plurality of sub-pixels.
  • the line of sight is perpendicular to the plane of the plurality of sub-pixels, and the viewing angle is zero.
  • the display device provided by the embodiment of the present invention has a grating in both the dual field of view display device and the anti-spyness display device, and the structure of the grating can be the same.
  • a scrollable rolling structure 12 is disposed between the display screen 10 and the grating 11, and a push mechanism 30 is provided to push the display screen 10 and/or the grating 11 such that the relative positions of the two are between the first state and the second state.
  • Switch The display device of the embodiment of the present invention can realize the switching between the dual field of view display and the anti-spy display according to the need of the dual field of view display in the first state, and the display device of the embodiment of the present invention can satisfy the switching between the dual field of view display and the anti-spy display.
  • the display device integrates the needs of multiple functions.
  • the grating 11 and/or the display screen 10 can be moved in a direction parallel to the plane of the sub-pixel, for example When the display screen is horizontally placed, the grating can be moved left and right in a direction parallel to the display screen to switch between the first state and the second state.
  • the grating 11 and/or the display screen 10 can be moved in a direction parallel to the plane of the sub-pixel to ensure switching. The rapid progress.
  • the amount of change in the relative position of the two embodiments is not limited.
  • the amount of change in the grating 11 and/or the display screen 10 in a direction parallel to the plane in which the sub-pixels are located i.e., the amount of change in relative position
  • the amount of change in the relative position of the grating 11 and the display screen 10 may also be three-thirds, five-fifths, and the like of the sub-pixel column width.
  • the display device provided in this embodiment may further include a flexible sealant 15 for bonding the display screen 10 and the grating 11.
  • the flexible sealant 15 is provided with adhesive force and flexibility, and can realize the grating 11 and the display screen 10. Under the premise of relative motion, the display device is guaranteed to have good sealing.
  • the flexible frame glue 15 can be selected from the existing frame glue which is available on the market, or can be prepared according to the needs in the actual production process.
  • rubber is flexible, and rubber can be mixed with other adhesives with strong adhesion to form the required flexible frame glue, and the like.
  • This embodiment is not limited to the specific form of the rolling structure 12, for example, it may be a sphere or an ellipsoid. Body or cylinder. When it is a cylinder, the curved surface of the cylinder is in contact with the grating 11 and the display screen 10.
  • the rolling structure 12 can be evenly distributed between the display screen 10 and the grating 11.
  • the particle size of the rolling structure 12 may be on the order of micrometers to make the thickness of the display device thinner.
  • the rolling structure 12 can also be used to maintain the distance (box thickness) between the display screen 10 and the grating 11 in addition to ensuring the smooth movement of the relative movement between the display screen 10 and the grating 11.
  • the rolling structure 12 can be a spherical spacer to ensure uniform thickness of the display device.
  • the setting method of the scroll structure 12 may be as follows.
  • a flexible frame glue is disposed on the edge of the display screen 10 or the grating 11, and the rolling structure 12 is evenly disposed in a space surrounded by the flexible frame glue by spraying or the like, and then the display screen 10 and the grating 11 are flexibly glued. Bonded together, the rolling structure 12 is encapsulated in a space formed by the display screen 10, the grating 11 and the flexible frame glue.
  • the display device provided in this embodiment may further include a filling liquid 13 filled between the display screen 10 and the grating 11 to enhance the fluidity of the rolling structure 12 between the display screen 10 and the grating 11, further reducing the display.
  • the refractive index of the filling liquid may be equal to the refractive index of the display screen 10 (in the embodiment, the "equal" may be absolutely equal or approximately equal, as long as the visual effect is not significantly affected) to ensure light from The display screen 10 passes through the filling liquid between the display screen 10 and the grating 11 without loss (if no refraction occurs), thereby improving the light transmittance. Since the majority of the thickness of the display screen 10 is the thickness of the first substrate 101 and the second substrate 107, the first substrate 101 and the second substrate 107 are generally glass, so the refractive index of the filling liquid may be the same as or similar to the refractive index of the glass. .
  • the rolling structure 12 may be first formed on the second substrate 107, the preparation of the display screen 10 is completed by using the second substrate 107 having the rolling structure 12 on the one side, and the preparation of the grating 11 is completed; then on the display screen 10 or the grating 11
  • the upper edge of the display area forms a "mouth"-shaped flexible frame glue 15 to ensure that the flexible frame glue 15 has an opening, and then the filling liquid is injected into the flexible frame glue, and the opening on the flexible frame glue is sealed after the injection is completed.
  • the display screen 10 is bonded to the grating 11 by using a flexible frame glue to complete the package.
  • the shape of the flexible sealant 15 may vary depending on the shape of the display device, and is not necessarily a "mouth" shape.
  • the rolling structure may be formed on the second substrate 107, but after the preparation of the display screen 10 and the grating 11 is completed, and the flexible frame rubber having the opening is formed, the rolling structure 12 and the filling are completed. The liquid is uniformly stirred, and then the filling liquid uniformly doped with the rolling structure 12 is injected into the flexible sealant, thereby completing the encapsulation.
  • the push mechanism 30 can include a robot 301 for pushing the grating 11 and/or the display screen 10, and a motor 302 coupled to the robot for powering the robot 301 to operate.
  • the robot 301 can be disposed on the side of the edge of the grating 11 according to the actual design requirements of the display device, or the robot 301 can be disposed on the side of the edge of the display screen 10, or in the grating 11 and the display screen 10.
  • the sides of the edges are all disposed on the robot 301.
  • the setting of related components can be reduced, and the internal structure of the display device can be simplified.
  • the display screen 10 Since only one substrate can be included in the grating 11, the display screen 10 includes at least two substrates, and the weight of the substrate accounts for a large proportion of the total weight of the components in which it is located. Therefore, in the process of moving the display screen 10 and the grating 11 relative to each other, the manner of pushing the grating 11 and not pushing the display screen 10 requires less power than the manner of pushing the display screen 10 and not pushing the grating 11, and thus is used for The motor that supplies power is small in volume. Therefore, in the embodiment, the manner in which the robot pushes the grating 11 is provided on the side of the edge of the grating 11, the thickness and weight of the display device can be further reduced, and the internal structure of the display device can be simplified.
  • the robot disposed on the side of the edge of the grating 11 and the robot 301 disposed on the side of the edge of the display screen 10 are respectively located on opposite sides of the display device.
  • the grating 11 and the display screen 10 can be simultaneously moved, thereby ensuring that the relative positions of the two are changed more rapidly to the required relative positions, and the switching speed of the dual field of view display and the anti-peep display is improved.
  • the number of the robots in this embodiment is not limited, and may be one or more.
  • a plurality of robots can be uniformly disposed on the same side of the display device to ensure uniform force on the same side of the pushed grating 11 or the display screen 10, and the moving direction is not offset.
  • a robot can be respectively disposed on opposite sides of the display device to use the robot of one side to rotate the grating 11 and when the dual field of view display is required. / or the display screen 10 is pushed to the designated position, and when the anti-spy display is required, the grating 11 and/or the display screen 10 are pushed back to the original position by the robot on the other side.
  • the pushing mechanism may include a plurality of robots, and the plurality of robots are respectively located on one side of the opposite sides of the display device, so as to ensure that the direction of movement of the pushed grating 11 or the display screen 10 does not shift, Successfully complete the switch between the two functions.
  • connection relationship between the robot and the motor can be determined according to factors such as the amount of power that a single motor can provide, the actual volume and weight of the motor, the thickness and weight of the display device required, and the like.
  • one robot can be connected to one motor one by one, or a plurality of robots can be connected to one motor, for example, a robot disposed on the same side can be connected to the same motor, and the like.
  • the push mechanism 30 may further include: a control circuit 303 connected to the motor 302, and the control circuit 303 is configured to control the motor 302 to drive the robot 301 to push the grating 11 and/or the display screen 10,
  • the control circuit 303 is configured to control the motor 302 to drive the robot 301 to push the grating 11 and/or the display screen 10
  • the above control circuit 301 may be provided separately or integrated with the peripheral driving circuit of the display device to improve the integration of the display device and further simplify the structure of the display device.
  • the display screen 10 in this embodiment may be a display screen of a liquid crystal display, an LED (Light Emitting Diode) display or the like.
  • the display screen 10 is a liquid crystal display.
  • the structure of the display screen 10 is as shown in FIG. 1 , and includes a first substrate 101 and a TFT (Thin Film Transistor) 102 formed on the first substrate 101 .
  • An array circuit structure a second substrate 107 disposed opposite to the first substrate 101; a sub-pixel 105 formed on the second substrate 107 and a black matrix 106 (the black matrix 106 is in the form of a grid, only shown in FIG. a portion parallel to a column of sub-pixels 105); a liquid crystal 103 filled between the first substrate 101 and the second substrate 107; and a spacer 104 for maintaining a certain distance between the first substrate 101 and the second substrate 107.
  • TFT Thin Film Transistor
  • the arrangement of the sub-pixels 105 on the display screen 10 can be as shown in FIGS. 2 and 3.
  • the display screen 10 includes a plurality of columns of sub-pixels 105 arranged in parallel, each column of sub-pixels 105 are evenly arranged in the order of RGB, and sub-pixels of three colors of adjacent R, G, and B form one pixel along a direction perpendicular to the light-transmitting region 113.
  • the sub-pixels included in each row of sub-pixels 105 have the same color.
  • the dimension in the direction parallel to the light-transmitting region 113 in the sub-pixel 105 is the first length
  • the dimension in the direction perpendicular to the light-transmitting region 113 in the sub-pixel 105 is the second length
  • FIG. 2 and FIG. 3 The first length of the illustrated sub-pixel 105 is less than the second length.
  • the arrangement of the sub-pixels 105 on the display screen 10 may also be other Arrangement form.
  • the first length of the sub-pixel 105 is greater than the second length
  • each column of sub-pixels is parallel to the light-transmitting region 113
  • each column of sub-pixels includes sub-pixels of three colors of R, G, and B.
  • Each row of sub-pixels in a direction perpendicular to the light-transmitting region 113 is uniformly arranged in the order of BGR.
  • FIG. 6 is a plan perspective view of the grating 11 and the display screen 10 corresponding to the dual field of view display when the sub-pixels 105 are arranged in the above-described manner, and the vertical projection of the light-transmitting region 113 on the display screen 10 spans the adjacent two columns of sub-pixels. 105, and completely or partially overlaps the area where the adjacent two columns of sub-pixels 105 are located, and the two columns of sub-pixels exposed by the two columns have R, G, and B colors, and the display device is observed from both sides, and the display device can be seen. Sub-pixels of different columns in the exposed two columns of sub-pixels, that is, different images are seen.
  • FIG. 7 is a plan perspective view of the grating 11 and the display screen 10 corresponding to the anti-spy display when the sub-pixels 105 are arranged in the above-described manner.
  • the vertical projection of the light-transmitting region 113 on the display screen 10 is completely or partially overlapped with the region where the column of sub-pixels 105 is located, and only one column of sub-pixels is exposed, and the sub-pixels on both sides of the sub-pixel exposed by the column are shielded from the light-shielded region.
  • 112 is occluded so that the image can be seen only when the angle of view is small, and the image seen from the side with the larger angle of view is all black.
  • the structure of the grating 11 in the display device provided in this embodiment may be as shown in FIG. 1 , and includes: a third substrate 111; a light shielding region 112 formed on the third substrate 111 and Light area 113.
  • the light-transmitting region 113 may be a transparent film layer formed between two adjacent light-shielding regions 112 or may be formed by a gap between two adjacent light-shielding regions 112.
  • a fourth substrate may be disposed on a side of the light-shielding region 112 and the light-transmitting region 113 facing away from the third substrate to prevent the rolling structure 12 from damaging the light-shielding region 112 and the light-transmitting region 113, thereby ensuring Good optical performance of the grating.
  • the embodiment further provides a driving method of the display device for driving the display device according to any of the above embodiments.
  • the driving method includes: when the display device needs to perform dual field of view display, bringing the display device into the first state, the plurality of sub-pixels including the first sub-pixel 1051 and the second sub-pixel 1052, respectively, to the first sub-pixel 1051 and the second
  • the sub-pixels 1052 apply signals belonging to different images; when the display device needs to perform anti-spy display, the display device is placed in the second state, and signals belonging to the same image are applied to the plurality of sub-pixels;
  • the first state is that the vertical projection of the light-transmitting region 113 on the display screen 10 spans the adjacent two columns of sub-pixels 105, and completely or partially overlaps the region where the adjacent two columns of sub-pixels 105 are located;
  • the second state is: light transmission
  • the vertical projection of region 113 on display screen 10 only completely or partially overlaps the region in which a column of sub-pixels 105 is located.
  • the grating 11 and the display screen 10 are relatively displaced, so that the relative position of the grating 11 and the display screen 10 is switched between the first state and the second state, thereby realizing display and prevention of the display device in the dual field of view. Peep between the displays.
  • the display surface can be divided into a plurality of first display regions and a plurality of second display regions.
  • the plurality of first display areas are alternately arranged with the plurality of second display areas, the first sub-pixel belongs to the first display area, and the second sub-pixel belongs to the second display area.
  • one column of sub-pixels is the first sub-pixel, belonging to the first display area, and the other column of sub-pixels is the second sub-pixel, belonging to the first Two display areas to ensure that different images are observed on opposite sides of the display device.
  • the display screen and the grating can be relatively displaced, thereby requiring the display device to perform dual field of view.
  • the display screen and/or the grating When displaying, the display screen and/or the grating can be pushed by setting the pushing mechanism, so that the vertical projection of the light-transmitting area of the grating on the display screen spans the adjacent two columns of sub-pixels, thereby realizing dual field of view display, and the display device is required for anti-spy
  • the display screen and/or the grating are pushed by the push structure, so that the vertical projection of the light-transmitting area of the grating on the display screen only covers one column of sub-pixels, thereby realizing the anti-spy display.
  • the display device in the embodiment of the present invention has the dual field of view display function and the anti-spy display function, and can realize the switching between the dual field of view and the anti-peep as needed, and satisfies the integration of various functions on one display device. demand.

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Abstract

公开了一种显示装置及其驱动方法。显示装置包括：显示屏（10），该显示屏（10）包括呈矩阵排布的多个子像素（105），同一列内的子像素（105）的颜色包括显示所需的全部颜色；设置在显示屏（10）上方的光栅（11），该光栅（11）包括交替排列的透光区域（113）和遮光区域（112），透光区域（113）平行于每一列子像素（105）；位于显示屏（10）与光栅（11）之间的滚动结构（12）；用于推送光栅（11）和/或显示屏（10），使光栅（11）与显示屏（10）的相对位置在第一状态与第二状态之间切换，实现显示装置在双视场显示与防窥显示之间切换的推送机构（30）。该显示装置能够根据需要实现双视场与防窥的切换，满足了集成多种功能的需求。

Description

显示装置及其驱动方法 技术领域
本发明的实施例涉及一种显示装置及其驱动方法。
背景技术
随着显示技术的不断发展，平面显示装置已经能够实现多种功能的显示，如双视场显示、防窥显示、3D显示等。
双视场显示是指在同一显示装置两侧(如左右两侧)可看到不同图像的显示技术。现有的双视场显示主要是通过将光栅设置于显示屏前，利用光栅上交替排列的透光区域和遮光区域将显示光分开至显示屏的两侧，使在两侧的观察者看到不同的像素，实现双视场显示。
在防窥显示技术中，通过在显示屏前设置光栅，可将正常显示区域仅局限于较窄的正面视角区域。观察者在某一视角范围内(如视角小于60度)才能看到正常显示的图像，一旦视角超出该范围(如视角大于60度)所观察到的图像则为全黑画面。这种技术具有一定保护隐私的作用。
发明内容
本发明的实施例提供一种显示装置及其驱动方法，本发明的实施例提供的显示装置兼具双视场显示功能和防窥显示功能。
本发明的至少一个实施例提供一种显示装置，其包括：显示屏，所述显示屏包括呈矩阵排布的多个子像素，同一列内的所述子像素的颜色包括所述显示屏进行显示所需的全部颜色；光栅，设置在所述显示屏上方，包括交替排列的透光区域和遮光区域，所述透光区域平行于每一列所述子像素；滚动结构，位于所述显示屏与所述光栅之间；以及推送机构，用于推送所述光栅和/或所述显示屏，使所述光栅与所述显示屏的相对位置在第一状态与第二状态之间切换，实现所述显示装置在双视场显示与防窥显示之间切换。所述第一状态为：所述透光区域在所述显示屏上的垂直投影横跨相邻两列所述子像素，且与相邻的两列所述子像素所在的区域完全或部分重叠；所述第二状态 为：所述透光区域在所述显示屏上的垂直投影仅与一列所述子像素所在的区域完全或部分重叠。
例如，所述光栅与所述显示屏的相对位置在所述第一状态与所述第二状态之间切换的过程中，所述光栅和/或所述显示屏沿平行于所述子像素所在平面的位置不同。
例如，所述光栅和/或所述显示屏沿平行于子像素所在平面的方向移动的变化量可为所述子像素列宽的一半。
例如，所述显示装置还可包括用于粘接所述显示屏与所述光栅的柔性框胶。
例如，所述显示装置还可包括填充于所述显示屏与所述光栅之间的填充液。
例如，所述填充液的折射率与所述显示屏的折射率相等。
例如，所述滚动结构可为球体、椭球体或圆柱体。
例如，所述滚动结构可为球状隔垫物。
例如，所述滚动结构均匀分布于所述显示屏与所述光栅之间。
例如，所述滚动结构的粒径的量级为微米级。
例如，所述推送机构可包括：用于推送所述光栅和/或所述显示屏的机械手；与所述机械手相连的电机，所述电机用于为所述机械手进行动作提供动力。
例如，所述推送机构可包括多个机械手，所述多个机械手分别位于所述显示装置相对的两边的一侧。
例如，所述推送机构还可包括与所述电机相连的控制电路，所述控制电路用于控制所述电机带动所述机械手推送所述光栅和/或所述显示屏，以在所述显示装置需要进行双视场显示时，使所述光栅与所述显示屏处于所述第一状态，在所述显示装置需要进行防窥显示时，使所述光栅与所述显示屏处于所述第二状态。
本发明的实施例还提供一种显示装置的驱动方法，用于驱动以上任一所述的显示装置，所述驱动方法包括：在所述显示装置需要进行双视场显示时，使所述显示装置处于第一状态，所述多个子像素包括第一子像素和第二子像素，分别向所述第一子像素和所述第二子像素施加属于不同图像的信号；在 所述显示装置需要进行防窥显示时，使所述显示装置处于第二状态，向所述多个子像素施加属于同一图像的信号。所述第一状态为：所述透光区域在所述显示屏上的垂直投影横跨相邻两列所述子像素，且与相邻的两列所述子像素所在的区域完全或部分重叠，所述第二状态为：所述透光区域在所述显示屏上的垂直投影仅与一列所述子像素所在的区域完全或部分重叠。
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它的附图。
图1为本发明一实施例所提供的显示装置的结构图；
图2为本发明一实施例所提供的显示装置在双视场显示时光栅与显示屏的平面透视图；
图3为本发明一实施例所提供的显示装置在双视场显示时的光路图；
图4为本发明一实施例所提供的显示装置在防窥显示时光栅与显示屏的平面透视图；
图5为本发明一实施例所提供的显示装置在防窥显示时的光路图；
图6为本发明另一实施例所提供的显示装置的各子像素以另一种方式排布时双视场显示所对应的光栅与显示屏的平面透视图；
图7为本发明另一实施例所提供的显示装置的各子像素以另一种方式排布时防窥显示所对应的光栅与显示屏的平面透视图。
附图标记：
10-显示屏；11-光栅；12-滚动结构；13-填充液；15-柔性框胶；101-第一基板；102-薄膜晶体管；103-液晶；104-隔垫物；105-子像素；106-黑色矩阵；107-第二基板；111-第三基板；112-遮光区域；113-透光区域；30-推送机构；301-机械手；302-电机；303-控制电路；1051-第一子像素；1052-第二子像素。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
发明人在研究中注意到，基于具有不同功能的显示技术，如何使一台显示装置集成多种功能成为领域内的研究方向之一。
本实施例提供一种显示装置，如图1所示，该显示装置包括：显示屏10、光栅11、滚动结构12和推送结构30。该显示屏10包括呈矩阵排布的多个子像素105，同一列内的子像素105的颜色包括显示屏10进行显示所需的全部颜色；该光栅11设置在显示屏10上方，该光栅11包括交替排列的透光区域113和遮光区域112，透光区域113平行于每一列子像素105；该滚动结构12位于显示屏10与光栅11之间；该推送机构30用于推送光栅11和/或显示屏10，使光栅11与显示屏10的相对位置在第一状态与第二状态之间切换，实现显示装置在双视场显示与防窥显示之间切换。
在本公开之中，第一状态可为：透光区域113在显示屏10上的垂直投影横跨相邻两列子像素105，且与相邻的两列子像素105所在的区域完全或部分重叠。第二状态可为：透光区域113在显示屏10上的垂直投影仅与一列子像素105所在的区域完全或部分重叠。
需要说明的是，所述“透光区域113”可为相邻遮光区域112之间的间隙区域(如图1中的光栅11所示)；或者，所述“透光区域113”还可为形成于相邻遮光区域112之间的间隙区域内、由透明材料形成的条纹。另外，所述“显示屏上方”是指显示屏10进行图像显示的一侧。
上述显示装置中，当需要显示装置进行双视场显示时，光栅11与显示屏10的相对位置为第一状态，即：透光区域113在显示屏10上的投影横跨相邻两列子像素105，且与相邻的两列子像素105所在的区域完全或部分重叠，光栅11与显示屏10的平面透视图可如图2所示。由于本实施例中每列子像素105的颜色均包括显示屏10进行显示所需的全部颜色(如：红色R、绿色G和蓝色B)，因此每条透光区域113所暴露出的子像素的颜色并非是单一的，而是包括全部颜色的子像素，因此能够进行显示。
此时，显示装置的光路图可如图3所示。以要实现左右双视场显示为例， 光线A和B表示从显示装置右侧观察，所能够看到的子像素为一条透光区域113所暴露出的两列子像素105中位于左侧的子像素，光线C和D表示从显示装置左侧观察，所能够看到的子像素为一条透光区域113所暴露出的两列子像素105中位于右侧的子像素。此时，分别向位于左侧的子像素与位于右侧的子像素施加属于不同图像的信号，从而可使显示装置两侧的视角呈现不同的图像，实现了双视场显示。
需要说明的是，以显示装置平行于一列子像素105的中线为分界线，分界线的左侧为本实施例中所述的“左侧”，分界线的右侧为本实施例中所述的“右侧”。
另外，在发明的其它实施例中，显示装置还可实现其它视角下的双视场显示，对此，本领域的技术人员基于本实施例所提供的显示装置能够经过变形得到，在此不再赘述。
当需要显示装置进行防窥显示时，光栅11与显示屏10的相对位置为第二状态，即：透光区域113在显示屏10上的垂直投影仅与一列子像素105所在的区域完全或部分重叠。光栅11与显示屏10的平面透视图例如可如图4所示。相邻两条遮光区域112之间的透光区域113仅暴露出一列子像素105，该列所露出来的子像素105两侧的子像素列均被遮光区域112遮挡。由于本实施例中每列子像素105的颜色均包括显示屏10进行显示所需的全部颜色(如：红色R、绿色G和蓝色B)，因此所暴露出的子像素105的颜色并非是单一的，而是包括全部颜色的子像素，由此可实现显示。
此时，显示装置的光路图可如图5所示。以要实现侧面视角时的防窥显示为例，光线E和F表示从零视角及零视角周围的较小视角范围内侧视显示装置，所能够看到的子像素为透光区域113所暴露出来的一排子像素105。光线H和G表示从右侧较大视角范围内观察显示装置，由于遮光区域112的完全遮挡，因此无法看到位于所暴露出来的一列子像素105左侧的子像素。光线I和J表示从左侧较大视角范围内观察显示装置，由于遮光区域112的完全遮挡，因此无法看到位于所暴露出来的一列子像素105右侧的子像素。向显示装置的所有子像素105施加属于同一图像的信号，从而仅能在零视角及零视角周围的较小视角范围内观察到显示的该图像。但是在侧视角大于一定角度后，便无法观察到图像，实现了防窥显示。
需要说明的是，本实施例中所述的“视角”为观察视线与垂直于多个子像素所在平面的直线的夹角。当正视显示装置时，视线垂直于多个子像素所在平面，视角为零。
综上，本发明实施例所提供的显示装置，基于双视场显示装置和防窥显示装置内均具有光栅，且光栅的结构可以相同。在显示屏10与光栅11之间设置能够滚动的滚动结构12，并设置推送机构30以推送显示屏10和/或光栅11，使二者在的相对位置在第一状态与第二状态之间切换。由于第一状态时能够实现双视场显示，第二状态时能够实现防窥显示，因此本发明实施例中的显示装置能够根据需要实现双视场显示与防窥显示的切换，满足了一种显示装置集成多种功能的需求。
上述显示装置中，光栅11与显示屏10的相对位置在第一状态与第二状态之间切换的过程中，光栅11和/或显示屏10可以沿平行于子像素所在平面的方向移动，例如，将显示屏水平放置不动时，光栅可以在与显示屏平行的方向上左右移动，从而达到第一状态和第二状态的切换。
例如，在光栅11与显示屏10的相对位置在第一状态与第二状态之间切换的过程中，光栅11和/或显示屏10可以沿平行于子像素所在平面的方向移动，以保证切换的迅速进行。
只要保证光栅11与显示屏10的相对位置在第一状态与第二状态之间切换即可，故本实施例对二者的相对位置的变化量并不限定。例如，光栅11和/或显示屏10沿平行于子像素所在平面的方向移动的变化量(即相对位置的变化量)可以为子像素列宽的一半。在本发明的其它实施例中，光栅11与显示屏10的相对位置的变化量还可为子像素列宽的二分之三、二分之五等其它数值。
例如，本实施例所提供的显示装置还可包括用于粘接显示屏10与光栅11的柔性框胶15，该柔性框胶15具备粘接力和柔性，能够在实现光栅11与显示屏10相对运动的前提下，保证显示装置良好的密封性。
例如，柔性框胶15可选用市面上已有的、符合要求的框胶，也可在实际生产过程中根据需要自行配制。例如：利用橡胶具备柔性，可将橡胶与其它粘接力较强的胶混合，形成所需要的柔性框胶，等等。
本实施例对滚动结构12的具体形态并不限定，例如，其可为球体、椭球 体或圆柱体。当其为圆柱体时，圆柱体的曲面与光栅11和显示屏10相接触。
例如，为保证显示屏10与光栅11之间的相对运动摩擦力更小、更顺畅，可使滚动结构12均匀分布于显示屏10与光栅11之间。
例如，本实施例中，滚动结构12的粒径的量级可为微米级，以使显示装置的厚度更薄。
滚动结构12除具有保证显示屏10与光栅11之间的相对运动顺利进行的作用外，还可用于保持显示屏10与光栅11之间的距离(盒厚)。例如，滚动结构12可为球状隔垫物，以保证显示装置厚度的均匀。
例如，滚动结构12的设置方法可为如下方式。例如，在显示屏10或光栅11的边缘设置柔性框胶，采用喷洒等方式将滚动结构12均匀的设置于柔性框胶所包围的空间内，然后再利用柔性框胶将显示屏10与光栅11粘接在一起，使滚动结构12封装于显示屏10、光栅11和柔性框胶所构成的空间内。
例如，本实施例所提供的显示装置还可包括填充于显示屏10与光栅11之间的填充液13，以增强滚动结构12在显示屏10与光栅11之间的流动性，进一步减小显示屏10与光栅11之间相对运动的摩擦力。
进一步的，例如，填充液的折射率可与显示屏10的折射率相等(本实施例中，所述“相等”可为绝对相等或近似相等，只要不明显影响视觉效果)，以保证光线从显示屏10经过显示屏10与光栅11之间的填充液时不损失(如不发生折射)，提高光线穿透率。由于显示屏10的绝大部分厚度为第一基板101与第二基板107的厚度，第一基板101与第二基板107通常为玻璃，因此填充液的折射率可与玻璃的折射率相同或相近。
需要说明的是，本实施对于上述填充有填充液的显示装置的制备方式并不限定。例如，可首先在第二基板107上形成滚动结构12，利用该一面上具有滚动结构12的第二基板107完成显示屏10的制备，并完成光栅11的制备；然后在显示屏10或光栅11上沿显示区的边缘形成“口”字型的柔性框胶15，保证柔性框胶15上具有一开口，之后将填充液注入柔性框胶内，注入完毕后将柔性框胶上的开口封堵，最后利用柔性框胶将显示屏10与光栅11粘接，完成封装。柔性框胶15的形状可根据显示装置的形状而变化，不一定为“口”字型。再如，可不使滚动结构形成于第二基板107上，而是在显示屏10与光栅11的制备各自完成，并形成具有开口的柔性框胶后，将滚动结构12与填 充液均匀搅拌，然后将均匀掺有滚动结构12的填充液注入柔性框胶内，由此完成封装。
本实施例对在显示装置中所设置的推送机构的具体实现形式并不限定。例如，推送机构30可包括：用于推送光栅11和/或显示屏10的机械手301；与机械手相连的电机302，该电机302用于为机械手301进行动作提供动力。
基于该推送机构的具体实现形式，可根据显示装置的实际设计需要，将机械手301设置于光栅11边缘的侧面，或者将机械手301设置于显示屏10边缘的侧面，或者在光栅11和显示屏10边缘的侧面均设置于机械手301。对于前两种设置方式，能够减少相关元件的设置，简化显示装置的内部结构。
由于光栅11中可仅包括一片基板，显示屏10中至少包括两片基板，而基板的重量在其所在元件的总重量中所占比例较大。因此在使显示屏10与光栅11进行相对运动的过程中，推动光栅11、不推动显示屏10的方式相对于推动显示屏10、不推动光栅11的方式所需的动力要少，进而用于提供动力的马达体积要小，因此本实施例中，在光栅11边缘的侧面设置机械手推动光栅11的方式，可以进一步减小显示装置的厚度及重量，简化显示装置的内部结构。
对于在光栅11和显示屏10边缘的侧面均设置于机械手301的设置方式，设置于光栅11边缘的侧面的机械手和设置于显示屏10边缘的侧面的机械手301分别位于显示装置相对的两侧，可使光栅11和显示屏10同时移动，从而保证二者的相对位置更快速的变化为所需要的相对位置，提高了双视场显示与防窥显示的切换速度。
本实施例对于机械手的设置数量并不限定，可以为一个或者多个。优选可在显示装置的同一侧均匀设置多个机械手，以保证被推送的光栅11或者显示屏10的同一条边受力均匀，移动方向不发生偏移。
若机械手仅能朝一个方向推动光栅11和/或显示屏10，则可在显示装置相对的两侧分别设置机械手，以在需要进行双视场显示时，利用其中一侧的机械手将光栅11和/或显示屏10推动至指定位置，而在需要进行防窥显示时，利用另一侧的机械手将光栅11和/或显示屏10推回至原来的位置。再如，推送机构可包括多个机械手，多个机械手分别位于显示装置相对的两边的一侧，从而在保证被推送的光栅11或者显示屏10移动方向不发生偏移的前提下， 顺利完成两个功能之间的切换。
另外，例如，对于机械手与电机之间的连接关系，可依据单个电机所能提供的动力的大小、电机的实际体积和重量、所需要的显示装置的厚度和重量等因素确定。本实施例中一个机械手可一一对应的与一个电机相连，或者多个机械手与一个电机相连，例如，设置于同一侧的机械手可与同一个电机相连，等等。
本实施例所提供的显示装置中，例如，推送机构30还可包括：与电机302相连的控制电路303，该控制电路303用于控制电机302带动机械手301推送光栅11和/或显示屏10，以在显示装置需要进行双视场显示时，使光栅11与显示屏10处于第一状态，在显示装置需要进行防窥显示时，使光栅11与显示屏10处于第二状态。例如，上述控制电路301可以单独提供，也可与显示装置的外围驱动电路集成在一起，以提高显示装置的集成度，进一步简化显示装置的结构。
需要说明的是，本实施例中显示屏10可为液晶显示屏、LED(Light Emitting Diode，发光二极管)显示屏等类型的显示屏。以显示屏10为液晶显示屏为例，该显示屏10的结构可如图1所示，其包括：第一基板101；形成于第一基板101上的TFT(Thin Film Transistor，薄膜晶体管)102等阵列电路结构；与第一基板101相对设置的第二基板107；形成于第二基板107上的子像素105和黑色矩阵106(该黑色矩阵106为网格状，图1中仅示出了平行于一列子像素105的部分)；填充于第一基板101与第二基板107之间的液晶103；用于保持第一基板101与第二基板107之间一定间距的隔垫物104。
例如，显示屏10上各子像素105的排布可如图2和图3所示。显示屏10包括多列平行排列的子像素105，每列子像素105按照RGB的顺序均匀排列，相邻R、G和B三种颜色的子像素形成一个像素，沿垂直于透光区域113的方向上每一行子像素105中所包含的子像素的颜色相同。若称子像素105中沿平行于透光区域113的方向上的尺寸为第一长度，子像素105中沿垂直于透光区域113的方向上的尺寸为第二长度，则图2和图3所示出的子像素105中第一长度小于第二长度。
在本发明的其它实施例中，显示屏10上各子像素105的排布还可为其它 排布形式。例如：如图6和图7所示，子像素105中第一长度大于第二长度，每列子像素平行于透光区域113，且每列子像素均包括R、G和B三种颜色的子像素，沿垂直于透光区域113的方向上的每行子像素按照BGR的顺序均匀排列。图6为各子像素105以上述形式排布时双视场显示所对应的光栅11与显示屏10的平面透视图，透光区域113在显示屏10上的垂直投影横跨相邻两列子像素105，且与相邻的两列子像素105所在的区域完全或部分重叠，其所暴露出来的两列子像素均具有R、G和B三种颜色，分别从两侧观察显示装置，能够看到所暴露出来的两列子像素中不同列的子像素，即看到不同的图像。图7为各子像素105以上述形式排布时防窥显示所对应的光栅11与显示屏10的平面透视图。透光区域113在显示屏10上的垂直投影仅与一列子像素105所在的区域完全或部分重叠，仅暴露出一列子像素，该列所暴露出来的子像素两侧的子像素均被遮光区域112遮挡，使得仅在视角较小时才能够看清图像，从视角较大的侧面所看到的图像为全黑。
另外，需要说明的是，本实施例中所提供的显示装置中的光栅11的结构可如图1所示，其包括：第三基板111；形成于第三基板111上的遮光区域112和透光区域113。透光区域113可为相邻两遮光区域112之间形成的透明膜层，或者可由相邻两遮光区域112之间的间隙形成。例如，在本发明的其它实施例中，还可在遮光区域112和透光区域113背离第三基板的一侧设置第四基板，以防止滚动结构12损伤遮光区域112和透光区域113，保证光栅良好的光学性能。
本实施例还提供了一种显示装置的驱动方法，用于驱动以上任一实施例所述的显示装置。该驱动方法包括：在显示装置需要进行双视场显示时，使显示装置处于第一状态，多个子像素包括第一子像素1051和第二子像素1052，分别向第一子像素1051和第二子像素1052施加属于不同图像的信号；在显示装置需要进行防窥显示时，使显示装置处于第二状态，向多个子像素施加属于同一图像的信号；
第一状态为：透光区域113在显示屏10上的垂直投影横跨相邻两列子像素105，且与相邻的两列子像素105所在的区域完全或部分重叠；第二状态为：透光区域113在显示屏10上的垂直投影仅与一列子像素105所在的区域完全或部分重叠。
通过上述驱动方法，使光栅11与显示屏10发生相对位移，从而使得光栅11与显示屏10的相对位置在第一状态与第二状态之间切换，实现了显示装置在双视场显示与防窥显示之间切换。
需要说明的是，在显示装置进行双视场显示时，由于向不同区域内的子像素所施加的图像信号不同，因此可使显示面分为多个第一显示区与多个第二显示区。该多个第一显示区与多个第二显示区交替排列，第一子像素属于第一显示区，第二子像素属于第二显示区。每条透光区域113在显示屏10上的垂直投影所横跨的两列子像素中，一列子像素为第一子像素，属于第一显示区，另一列子像素为第二子像素，属于第二显示区，从而保证在显示装置相对的两侧观察到不同的图像。
本发明的实施例所提供的显示装置及其驱动方法中，通过在叠加设置的显示屏与光栅之间设置滚动结构，使得显示屏与光栅能够进行相对位移，从而在需要显示装置进行双视场显示时，可通过设置推送机构推送显示屏和/或光栅，使光栅的透光区域在显示屏上的垂直投影横跨相邻两列子像素，实现双视场显示，在需要显示装置进行防窥显示时，利用推送结构推送显示屏和/或光栅，使光栅的透光区域在显示屏上的垂直投影仅覆盖一列子像素，实现防窥显示。可见，本发明的实施例中的显示装置兼具双视场显示功能与防窥显示功能，能够根据需要实现双视场与防窥的切换，满足了人们对一台显示装置集成多种功能的需求。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本专利申请要求于2014年7月10日递交的中国专利申请第201410328339.4号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (14)

  1. 一种显示装置，其包括：
    显示屏，包括呈矩阵排布的多个子像素，同一列内的所述子像素的颜色包括所述显示屏进行显示所需的全部颜色；
    光栅，设置在所述显示屏上方，包括交替排列的透光区域和遮光区域，所述透光区域平行于每一列所述子像素；
    滚动结构，位于所述显示屏与所述光栅之间；以及
    推送机构，用于推送所述光栅和/或所述显示屏，使所述光栅与所述显示屏的相对位置在第一状态与第二状态之间切换；
    其中，所述第一状态为：所述透光区域在所述显示屏上的垂直投影横跨相邻两列所述子像素，且与相邻的两列所述子像素所在的区域完全或部分重叠；所述第二状态为：所述透光区域在所述显示屏上的垂直投影仅与一列所述子像素所在的区域完全或部分重叠。
  2. 根据权利要求1所述的显示装置，其中，所述光栅与所述显示屏的相对位置在所述第一状态与所述第二状态之间切换的过程中，所述光栅和/或所述显示屏沿平行于所述子像素所在平面的方向的位置不同。
  3. 根据权利要求2所述的显示装置，其中，所述光栅和/或所述显示屏沿平行于子像素所在平面的方向移动的变化量为所述子像素列宽的一半。
  4. 根据权利要求1至3任一项所述的显示装置，还包括用于粘接所述显示屏与所述光栅的柔性框胶。
  5. 根据权利要求1至4任一项所述的显示装置，其还包括填充于所述显示屏与所述光栅之间的填充液。
  6. 根据权利要求5所述的显示装置，其中，所述填充液的折射率与所述显示屏的折射率相等。
  7. 根据权利要求1至6任一项所述的显示装置，其中，所述滚动结构为球体、椭球体或圆柱体。
  8. 根据权利要求1至7任一项所述的显示装置，其中，所述滚动结构为球状隔垫物。
  9. 根据权利要求1至8任一项所述的显示装置，其中，所述滚动结构均 匀分布于所述显示屏与所述光栅之间。
  10. 根据权利要求1至9任一项所述的显示装置，其中，所述滚动结构的粒径的量级为微米级。
  11. 根据权利要求1至10任一项所述的显示装置，其中，所述推送机构包括：
    用于推送所述光栅和/或所述显示屏的机械手；
    与所述机械手相连的电机，所述电机用于为所述机械手进行动作提供动力。
  12. 根据权利要求1至11任一项所述的显示装置，其中，所述推送机构包括多个机械手，所述多个机械手分别位于所述显示装置相对的两边的一侧。
  13. 根据权利要求11或12所述的显示装置，其中，所述推送机构还包括：
    与所述电机相连的控制电路，所述控制电路用于控制所述电机带动所述机械手推送所述光栅和/或所述显示屏。
  14. 一种显示装置的驱动方法，其用于驱动如权利要求1至13任一项所述的显示装置，所述驱动方法包括：
    在所述显示装置需要进行双视场显示时，使所述显示装置处于第一状态，所述多个子像素包括第一子像素和第二子像素，分别向所述第一子像素和所述第二子像素施加属于不同图像的信号；
    在所述显示装置需要进行防窥显示时，使所述显示装置处于第二状态，向所述多个子像素施加属于同一图像的信号；
    其中，所述第一状态为：所述透光区域在所述显示屏上的垂直投影横跨相邻两列所述子像素，且与相邻的两列所述子像素所在的区域完全或部分重叠，所述第二状态为：所述透光区域在所述显示屏上的垂直投影仅与一列所述子像素所在的区域完全或部分重叠。
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