WO2015010402A1 - 显示装置及其显示方法 - Google Patents

显示装置及其显示方法 Download PDF

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Publication number
WO2015010402A1
WO2015010402A1 PCT/CN2013/088041 CN2013088041W WO2015010402A1 WO 2015010402 A1 WO2015010402 A1 WO 2015010402A1 CN 2013088041 W CN2013088041 W CN 2013088041W WO 2015010402 A1 WO2015010402 A1 WO 2015010402A1
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WIPO (PCT)
Prior art keywords
display
area
liquid crystal
display panel
grating
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Legal status (The legal status 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 status listed.)
Ceased
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PCT/CN2013/088041
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English (en)
French (fr)
Inventor
李文波
武延兵
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Publication of WO2015010402A1 publication Critical patent/WO2015010402A1/zh
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1323Arrangements for providing a switchable viewing angle
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0808Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical 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
    • G02B30/22Optical 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 stereoscopic type
    • G02B30/25Optical 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 stereoscopic type using polarisation techniques
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/29Devices 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 position or the direction of light beams, i.e. deflection
    • G02F1/292Devices 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 position or the direction of light beams, i.e. deflection by controlled diffraction or phased-array beam steering

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display device and a display method thereof. Background technique
  • Flat panel display has the advantages of high image quality, small size, light weight, low voltage drive, low power consumption and wide application range, so it is widely used in medium and small portable TVs, mobile phones, video recorders, notebooks.
  • Cathode Ray Tubes (CRTs) have become the mainstream of displays in consumer electronics or computer products such as computers, desktop monitors, car monitors, and projection televisions.
  • the market for flat panel displays has increased significantly, especially in the computer field.
  • the requirements of large area, high resolution, wide viewing angle and fast response time have become the key to consumers' evaluation of the advantages and disadvantages of flat panel displays.
  • the wide viewing angle of flat panel displays does not compromise privacy to protect user privacy.
  • a liquid crystal display with a wide viewing angle function allows more people to share screen images, it does not prevent others from peeking into private content that is not disclosed.
  • the prior art provides a dual view display device, including a display panel 200 and a grating 10 disposed on a light emitting surface side of the display panel 200, the grating 10 being covered by transparent stripes and shading An optical device consisting of stripes arranged in a spaced arrangement.
  • the working principle of the dual-view display device is: the user located in the first viewing zone Q1 can only see a part of the pixel unit on the display panel 200 through the grating 10 (ie, the pixel unit in the shaded portion in FIG. 1), and is located in the second view.
  • the user of the area Q2 can only see another partial pixel unit on the display panel 200 through the grating 10 (ie, the pixel unit without a shadow in FIG. 1), so that the user can be in the first viewing zone Q1 and the second viewing zone Q2. See the different positions of the display panel separately, which can be seen by the user in the first viewport Q1.
  • the position of the display panel is defined as a first display area
  • the position of the display panel that the user sees in the second view area Q2 is defined as the second display area, as long as the first display area and the second display area respectively display different images, that is, Two different images can be displayed simultaneously for users in different viewing zones on one display panel, thus achieving the dual view function and improving the privacy of the two viewport users.
  • the existing dual-view display device does not adjust the viewing angle when the user views the two different images, that is, the positions of the two viewing zones are fixed, that is, the user can only view the dual-view display in a fixed direction.
  • the corresponding image displayed on the device does not adjust the viewing angle when the user views the two different images, that is, the positions of the two viewing zones are fixed, that is, the user can only view the dual-view display in a fixed direction.
  • the corresponding image displayed on the device is not adjust the viewing angle when the user views the two different images, that is, the positions of the two viewing zones are fixed, that is, the user can only view the dual-view display in a fixed direction.
  • the technical problem to be solved by the present invention includes providing a display device with adjustable viewing angle and a display method thereof in view of the above-mentioned insufficiency in the prior art.
  • a technical solution for solving the technical problem of the present invention is a display device including a display panel, and a dynamic grating disposed on a light-emitting surface side of the display panel, the dynamic grating being capable of changing a width and/or a position of an opening region thereof .
  • the dynamic grating of the display device of the present invention can change the width and/or position of the open area thereof, so that the direction of the light emitted by the display panel through the dynamic grating can be changed, so the display device can display two images with adjustable viewing angles or Two videos (the video is composed of multiple consecutive images).
  • an angle between a length direction of the open area of the dynamic grating and a row direction of the pixel unit of the display panel is greater than 0 degrees and less than 90 degrees.
  • the length direction of the open area of the dynamic grating is perpendicular to the row direction of the pixel unit of the display panel.
  • the display panel and the dynamic grating are arranged in parallel.
  • the display panel is any one of an OLED display panel, a plasma display panel, and a liquid crystal display panel.
  • the dynamic grating is any one of a liquid crystal grating, an electrowetting grating, and an electronic ink grating.
  • the display panel is a liquid crystal display panel
  • the dynamic grating is a liquid crystal grating.
  • the liquid crystal grating includes: a first substrate, a second substrate, a first polarizing plate, and the first substrate and the first substrate a liquid crystal layer between the second substrates; a side of the first substrate adjacent to the liquid crystal layer is provided with a block electrode, and a side of the second substrate adjacent to the liquid crystal layer is disposed with a plurality of side by side and a strip electrode which is insulated from each other; or a strip electrode disposed adjacent to the liquid crystal layer on the side of the first substrate and spaced apart from each other, and a strip of the second substrate adjacent to the liquid crystal layer
  • the block is provided with a block electrode; the first polarizer is disposed on the light exiting side of the liquid crystal grating; and each of the strip electrodes is connected to an independent voltage signal.
  • the dynamic grating is a liquid crystal grating;
  • the liquid crystal grating comprises: a first substrate, a second substrate, a first polarizing plate, a second polarizing plate, and a first substrate and a second substrate a liquid crystal layer; a side of the first substrate adjacent to the liquid crystal layer is provided with a bulk electrode, and a side of the second substrate adjacent to the liquid crystal layer is provided with a plurality of strip electrodes arranged side by side and insulated from each other Or a strip electrode disposed side by side and insulated from each other on a side of the first substrate adjacent to the liquid crystal layer, and a block electrode disposed on a side of the second substrate adjacent to the liquid crystal layer
  • the first polarizing plate is disposed on a light emitting side of the liquid crystal grating
  • the second polarizing plate is disposed on a light incident side of the liquid crystal grating
  • each of the strip electrodes is respectively connected with an independent voltage signal.
  • the technical solution adopted to solve the technical problem of the present invention is the display method of the above display device, and the display method specifically includes:
  • the width and/or position of the open area of the dynamic grating is changed; before the width and/or position of the open area of the dynamic grating changes, the position of the display panel viewed in the first viewing area is defined
  • the position of the display panel viewed in the second viewing zone is defined as the second display area; the display panel of the display device is divided into the first display area and the second display area.
  • the display method of the present invention can view different images or videos of two display areas from two viewing zones, respectively, and the viewing angles of the images or videos of the two display areas can be adjusted.
  • the pixel unit corresponding to the first display area in the display panel is blacked out, and the pixel unit corresponding to the second display area in the display panel displays an image;
  • the pixel unit corresponding to the second display area in the display panel is blacked out, and the pixel unit corresponding to the first display area in the display panel displays an image.
  • the width and/or position of the open area of the dynamic grating is changed as follows:
  • the image displayed in the first display area and the second display area can be viewed in turn in the first viewing zone, and can be rotated in the second viewing zone.
  • the pixel unit corresponding to the second display area in the display panel and the pixel unit corresponding to the first display area are turned black, or the pixel unit corresponding to the first display area in the display panel is alternately corresponding to the second display area.
  • the pixel unit is black
  • the pixel unit corresponding to the second display area is black
  • the pixel unit corresponding to the first display area displays an image
  • the second display area is corresponding.
  • the pixel unit displays an image
  • the pixel unit display image corresponding to the first display area and the pixel unit display image corresponding to the second display area can be combined into a complete image.
  • the display panel has a refresh rate of at least 120 Hz.
  • 1 is a structural view of a conventional dual-view display device
  • Figure 2 is a structural view showing a display device according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic diagram of a display device according to Embodiment 1 of the present invention, which realizes an adjustable viewing angle by a dynamic grating thereof;
  • Figure 4 is a plan view showing a structure of the dynamic grating of Figure 2;
  • FIG. 5 is a schematic diagram showing an image displayed by a display device corresponding to the dynamic grating shown in FIG. 4 viewed in the first viewing zone and the second viewing zone, respectively;
  • Figure 6 is a plan view showing another structure of the dynamic grating of Figure 2; 7 is a schematic diagram showing an image displayed by a display device corresponding to the dynamic grating shown in FIG. 6 viewed in a first viewing zone and a second viewing zone, respectively;
  • FIG. 8 is a structural view showing a display panel of a display device according to Embodiment 1 of the present invention as a liquid crystal display panel;
  • Fig. 9 is a structural view showing a display panel of the display device according to Embodiment 1 of the present invention as a non-liquid crystal display panel.
  • the reference numerals are: 10, a grating; 100, a dynamic grating; 101, a first substrate; 102, a second substrate; 103, a bulk electrode; 104, a strip electrode; 105, a first polarizer; a polarizing plate; 200, a display panel; 201, an array substrate;
  • 202 a color film substrate
  • 203 an incident polarizing plate
  • 204 an exiting polarizing plate
  • 205 a sub-pixel
  • 2051 a red or green or blue sub-pixel
  • 2052 a black matrix
  • Sl an open area of the dynamic grating
  • Ql the first viewing zone
  • Q2 the second viewing zone.
  • the embodiment provides a display device including a display panel 200, and a dynamic grating 100 disposed on a light-emitting surface side of the display panel, the dynamic grating 100 being capable of changing the width and/or position of the open area S1 thereof. To control the outgoing direction of the light emitted by the display panel 200.
  • the display panel 200 and the dynamic grating 100 are arranged in parallel to obtain a better display effect.
  • the viewing angle of the display device is the pitch of the grating (i.e., the sum of the widths of adjacent opaque regions S2 and S1 in the grating), the width of the open region S1 of the grating, and the grating.
  • the pitch of the grating i.e., the sum of the widths of adjacent opaque regions S2 and S1 in the grating
  • the width of the open region S1 of the grating the grating.
  • the display panel 200 as a liquid crystal display panel as an example, a sub-layer of the liquid crystal display panel
  • the width of the pixel 205 i.e., the sum of the width of the red or green or blue sub-pixel 2051 and the width of one black matrix 2052 column/row adjacent thereto
  • Ps p + m, where one black matrix (BM ) 2052 columns / rows
  • the width of the open region S1 of the dynamic grating 100 is a variable value, and the distance between the dynamic grating 100 and the liquid crystal display panel is h.
  • a transparent dielectric layer is provided on both the light incident surface side and the light exit surface side of the dynamic grating 100 to provide a protective effect, and the transparent dielectric layer has a refractive index n. It can be seen that among the above parameters, m, p, n, and h are constants, and a is a variable.
  • the liquid crystal display panel includes a plurality of mutually parallel gate lines and a plurality of mutually parallel data lines, and the plurality of gate lines and the plurality of data lines intersect to define a plurality of sub-pixel units, to prevent the gate lines and The data line is leaked, and a black matrix is disposed at a position corresponding to the gate line and the data line. Therefore, the black matrix has a mesh structure. It can also be said that the black matrix includes a plurality of parallel black matrix columns and a plurality of parallel lines. Black matrix rows, multiple black matrix columns, and multiple black matrix rows are set across each other.
  • each of the open areas S1 and S12 of the dynamic grating 100 respectively correspond to a black matrix column/row of the liquid crystal display panel, and the black matrix columns/rows corresponding to the respective open areas S1 are
  • the black matrix columns/rows corresponding to the respective light-shielding regions S2 are arranged at intervals, and the black matrix columns/rows corresponding to each of the open regions S1 are located in the middle of the open region S1.
  • the light emitted by one sub-pixel 205 is incident on the transparent shield layer on the light-incident side of the dynamic grating 100, and then sequentially passed through the dynamic grating.
  • the open region S1 of 100 and the transparent medium layer on the light-emitting surface side of the dynamic grating 100 are emitted into the air, wherein ⁇ 2 is the minimum value of the incident angle, ⁇ 2 is the maximum value of the incident angle, and (9CT-0H) is the incident angle.
  • the length direction of the open area S1 of the dynamic grating 100 and the row direction of the pixel unit of the display panel 200 in the display device (the direction of the gate line of the display panel is generally the row of the pixel unit)
  • the direction, the direction of the data line is the column direction of the pixel unit) is vertical, or the length direction of the open area S1 of the dynamic grating 100 is parallel to the column direction of the pixel unit of the display panel 200, and is respectively in the first view area and the second view.
  • a schematic diagram of an image displayed by the display device viewed by the viewing zone is as shown in FIG. 5, where 1 represents an image viewed in the first viewing zone Q1, and 2 represents an image viewed in the second viewing zone Q2, visible from the display device. Two different images can be viewed on the left and right sides respectively.
  • the structure of the dynamic grating applied when the above description shows that the viewing angle of the device is adjustable is the same as that shown in Fig. 4.
  • the opening of the dynamic grating 100 in the display device The angle between the length direction of the area SI and the row direction of the pixel unit of the display panel 200 is greater than 0 degrees and less than 90 degrees, and the schematic images of the images displayed by the display devices respectively viewed in the first viewing zone and the second viewing zone are as shown in the figure. 7, where 1 represents an image viewed in the first viewing zone Q1, and 2 represents an image viewed in the second viewing zone Q2, visible from the upper left and lower right corners of the display device, or from the lower left corner of the display device Two different images can be viewed separately from the upper right corner.
  • the angle between the length direction of the open area S1 of the dynamic grating 100 and the row direction of the pixel unit of the display panel 200 is greater than 0 degrees and less than 90 degrees, the black matrix (BM) on the dynamic grating 100 and the display panel 200 can be alleviated. Moiré between the two due to interference.
  • the width and/or position of the open area S1 of the dynamic grating 100 of the structure shown in FIG. 4 and FIG. 6 is changed, after the light emitted from the display panel 200 passes through the dynamic grating 100, the direction of the exit changes, thereby
  • the viewing angle when the user views an image or video from the first viewing zone Q1 and/or the second viewing zone Q2 is also adjustable.
  • the display panel 200 of the display device is any one of an OLED display panel, a plasma display panel, and a liquid crystal display panel.
  • display panels of other configurations are also possible.
  • the dynamic grating 100 is preferably any one of a liquid crystal grating, an electrowetting grating, and an electronic ink grating.
  • the dynamic grating 100 is not limited to the above three types, as long as the width and/or position of the light-shielding region and the opening region (i.e., the light-transmitting region) can be adjusted.
  • the liquid crystal grating comprises: a first substrate 101, a second substrate 102, and a first polarization. a sheet 105 and a liquid crystal layer (not shown) between the first substrate 101 and the second substrate 102, and a block electrode 103 is disposed on a side of the first substrate 101 adjacent to the liquid crystal layer.
  • a strip electrode 104 disposed side by side and insulated from each other is disposed on a side of the second substrate 102 adjacent to the liquid crystal layer (wherein the positional relationship between the bulk electrode 103 and the strip electrode 104 can be interchanged), the first polarization
  • the sheet 105 is provided on the light outgoing side of the liquid crystal grating 100.
  • the display panel 200 is a liquid crystal display panel, the display panel 200 includes an incident polarizing plate 203, an array substrate 201, an exiting polarizing plate 204, and a color filter substrate 202, wherein The incident polarizing plate 203 is disposed outside the light incident surface of the array substrate 201, and the outgoing polarizing film 204 is disposed outside the light emitting surface of the color filter substrate 202.
  • each strip electrode 104 of the liquid crystal grating is connected to an independent voltage signal.
  • a voltage is applied to a part of the strip electrodes 104 in the liquid crystal grating to make the strip electrode of the partial voltage.
  • the liquid crystal corresponding to the rotation of 104 is rotated, and the polarized light emitted from the liquid crystal display panel is rotated by 90° in the liquid crystal region corresponding to the strip electrode 104 of the through voltage, so that the polarized light emitted by the liquid crystal display panel passes through the through voltage.
  • the portion of the light in the liquid crystal region corresponding to the strip electrode 104 can completely pass through the first polarizing plate 105 of the liquid crystal grating (the liquid crystal region corresponding to the strip electrode 104 of the through voltage is the open region S1 of the dynamic grating 100); In the portion of the strip electrode 104 that is not energized in the liquid crystal grating, the liquid crystal corresponding to the portion of the strip electrode 104 that is not through the voltage does not rotate, and the strip electrode 104 that passes through the un-passed voltage in the polarized light emitted from the liquid crystal display panel The portion of the light of the corresponding liquid crystal region cannot pass through the first polarizing plate 105 of the liquid crystal grating (the strip electrode 104 of the non-pass voltage corresponds to The liquid crystal region is the light-shielding region S2 of the dynamic grating 100, so it is displayed in black.
  • the liquid crystal corresponding to the strip electrode 104 rotates, and the polarized light emitted from the liquid crystal display panel is rotated by 90° in the liquid crystal region corresponding to the strip electrode 104 of the through voltage, so that the polarized light emitted by the liquid crystal display panel passes through
  • the portion of the liquid crystal region corresponding to the strip electrode 104 of the voltage is not transmitted through the first polarizing plate 105 of the liquid crystal grating, so that it is black; for the portion of the strip electrode 104 that is not energized in the liquid crystal grating, this portion is not
  • the liquid crystal corresponding to the strip electrode 104 of the voltage is not rotated, and the portion of the polarized light emitted by the liquid crystal display panel that passes through the liquid crystal region corresponding to the strip electrode 104 of the unconnected voltage can completely pass through the liquid crystal grating.
  • a polarizing plate 105 is not rotated, and the portion of the polarized light emitted by the liquid crystal display panel that passes through the liquid crystal region
  • each strip electrode 104 in the liquid crystal grating can be controlled by an independent voltage signal, the area of the liquid crystal grating having light transmission and the area without light transmission are wide.
  • the degree and/or position are adjustable, so that the exit angle of the light emitted by the display panel 200 after passing through the liquid crystal grating is adjustable, so that by controlling the width and/or position of the open area S1 of the liquid crystal grating 100, two viewing angles can be obtained. Adjustable image or two angles of viewable video.
  • the display panel 200 is not provided with a polarizing plate (for example, an OLED display device), and the liquid crystal grating thereof includes: a first substrate 101, a second substrate 102, and a first a polarizing plate 105, a second polarizing plate 106, and a liquid crystal layer between the first substrate 101 and the second substrate 102.
  • a block electrode 103 is disposed on a side of the first substrate 101 adjacent to the liquid crystal layer.
  • a side of the second substrate 102 adjacent to the liquid crystal layer is provided with a plurality of strip electrodes 104 arranged side by side and insulated from each other (wherein the positional relationship between the block electrodes 103 and the strip electrodes 104 can be interchanged)
  • the first polarizing plate 105 is disposed on the light emitting side of the liquid crystal grating 100
  • the second polarizing film 106 is disposed on the light incident side of the liquid crystal grating 100.
  • the second polarizing film 106 of the liquid crystal grating corresponds to the output polarizing plate 204 of the liquid crystal display panel.
  • the operating principle of the display device is the same as that of the above display device, and the description thereof will not be repeated here.
  • electrowetting grating and the electronic ink grating also control the width and/or position of the open area S1 by means of a control voltage, thereby adjusting the viewing angle of the display device.
  • Example 2
  • This embodiment provides a display method for the display device of Embodiment 1.
  • the display method specifically includes: changing the width and/or position of the open area of the dynamic grating during display to change the angle of view of the first viewing zone Q1 and/or the viewing angle of the second viewing zone Q2.
  • the position of the display panel viewed by the user in the first view area Q1 is defined as the first display area, and the user is in the second
  • the position of the display panel viewed by the viewing zone Q2 is defined as the second display area, so that the display panel of the display device can be divided into the first display area and the second display area.
  • the user before the change of the open area of the dynamic grating, the user can view the image displayed in the first display area in the first view area Q1 while being in the second
  • the viewing zone Q2 can view the image displayed by the second display area; after the change of the open area of the dynamic grating, the viewing angle of the first viewing zone Q1 and/or the viewing angle of the second viewing zone Q2 may change accordingly.
  • the above display method can display two images or two videos simultaneously with respect to the case where only one image or one video is displayed without the grating in the display device.
  • the viewing angle of the two images or two videos can be changed, but the disadvantage is that the resolution of the image or video viewed by the user in any one viewing zone is reduced by half.
  • the pixel unit corresponding to the first display area in the display panel is blacked out, and the pixel unit corresponding to the second display area in the display panel is normally displayed;
  • the pixel unit corresponding to the second display area in the display panel is blacked out, and the pixel unit corresponding to the first display area in the display panel is normally displayed.
  • the pixel unit corresponding to the first display area in the display panel is blacked out, and the pixel unit corresponding to the second display area in the display panel is normally displayed, and the first view area Q1 corresponding to the first display area cannot be viewed.
  • the second viewing zone Q2 corresponding to the second display area can view the image, making it safer to view the private content in the second viewing zone Q2, and can adjust the width and/or position of the open area of the dynamic grating. To adjust the angle of view of the second viewport Q2, but the resolution of the viewed image is reduced by half;
  • the pixel unit corresponding to the second display area in the display panel is blacked out, and the pixel unit corresponding to the first display area in the display panel is normally displayed, and the second view area Q2 corresponding to the second display area cannot be viewed.
  • the image while the first viewing zone Q1 corresponding to the first display area can view the image, so that it is safer to view the private content in the first viewing zone Q1, and can adjust the width and/or position of the open area of the dynamic grating.
  • the viewing angle of the first viewing zone Q1 is adjusted, but the resolution of the viewed image is reduced by half.
  • the image displayed in the first display area and the second display area can be viewed in turn in the first viewing zone Q1, in the second view
  • the area Q2 can alternately view the images displayed by the second display area and the first display area, so that the complete video can be viewed without loss of resolution in both the first viewing zone Q1 and the second viewing zone Q2.
  • the user After the change in the open area of the dynamic grating, the user is in the first viewport Q1 and The image viewed by the second viewing zone Q2 may also change.
  • the user After the positions of the open area and the light shielding area of the dynamic grating are interchanged (the widths of the open area and the light blocking area are unchanged), the user is in the first viewing area Q1.
  • the image displayed in the first display area cannot be viewed, and only the image displayed in the second display area can be viewed. Meanwhile, the user cannot view the image displayed in the second display area in the second viewing zone Q2, and can only view the first image.
  • An image displayed in a display area After the change in the open area of the dynamic grating, the user is in the first viewport Q1 and The image viewed by the second viewing zone Q2 may also change.
  • the positions of the open area and the light shielding area of the dynamic grating are interchanged (the widths of the open area and the light blocking area are unchanged)
  • the user is in the first viewing area Q1.
  • the user when the user can view the image displayed by the first display area in the first viewing zone Q1, the image displayed in the second display area can be viewed in the second viewing zone Q2; and when the user is in the first viewing zone Q1 When the image displayed in the second display area can be viewed, the image displayed in the first display area can be viewed in the second viewing zone Q2.
  • the user before the change of the open area of the dynamic grating, the user can view the image displayed by the first display area in the first view area Q1, and can view the image displayed in the second display area in the second view area Q2.
  • the user can view the image displayed by the odd-numbered column pixel unit on the display panel in the first viewing zone Q1, and can view the image displayed by the even-numbered column pixel unit on the display panel in the second viewing zone Q2; After the area changes, the user can view the image displayed in the second display area in the first viewing zone Q1, and can view the image displayed in the first display area in the second viewing zone Q2, for example, the user is in the first viewing zone Q1.
  • the image displayed by the even-numbered column pixel unit on the display panel can be viewed, and the image displayed by the odd-numbered column pixel unit on the display panel can be viewed in the second viewing zone Q2.
  • the opening of the dynamic grating After the area changes, the even-numbered column pixels on the display panel display the even-numbered column pixels of the first image, and the odd-numbered column pixel units display the odd-numbered columns of the second image, which can be seen before and after the change in the open area of the dynamic grating
  • the user can sequentially view the images displayed by the first display area and the second display area in the first view area Q1, that is, sequentially view the odd column pixels and the even column pixels of the first image, so that the resolution can be completed without loss of resolution.
  • the position of the open area of the dynamic grating is adjusted by taking turns, that is, the interchange of turns
  • the position of the open area and the light-shielding area of the dynamic grating can realize that the image of the first display area and the image of the second display area are alternately displayed in any one of the viewing areas, or the image of the second display area and the first display area are viewed.
  • the images are alternately displayed so that the complete video can be viewed without loss of resolution in both the first viewing zone Q1 and the second viewing zone Q2.
  • the refresh rate of the display panel is also reduced by half, and the refresh rate of the display panel is generally 60 Hz.
  • the display panel is a display panel with a refresh rate of not less than 120 Hz, thereby realizing a full-resolution adjustable viewing angle. control.
  • the pixel unit corresponding to the second display area in the display panel and the pixel unit corresponding to the first display area are turned black, or the pixel unit corresponding to the first display area in the display panel is alternately corresponding to the second display area.
  • the pixel unit is black
  • the pixel unit corresponding to the second display area is black
  • the pixel unit corresponding to the first display area displays an image
  • the second display area is corresponding.
  • the pixel unit displays an image
  • the pixel unit display image corresponding to the first display area and the pixel unit display image corresponding to the second display area can be combined into a complete image.
  • the pixel unit corresponding to the first display area is displayed, and the pixel unit corresponding to the second display area is blackened.
  • the first The image displayed by the first display area is seen in the view of the view area Q1, such that the odd-numbered column of pixel units on the display panel display an odd-numbered column of pixels of an image, and the image cannot be viewed in the second view-area Q2;
  • the position of the open area of the dynamic grating and the position of the light-shielding area are replaced (the widths of the open area and the light-shielding area are unchanged), so that the pixel unit corresponding to the second display area displays an image, and the pixel corresponding to the first display area is displayed.
  • the unit is black, and the image displayed in the second display area can be seen in the angle of view of the first viewing zone Q1, such that the even-numbered column of pixels on the display panel displays the even-numbered columns of one image, but not in the second viewing zone Q2. Watch the image.
  • the first time and the second time are alternately performed, that is, the pixel unit corresponding to the second display area in the display panel and the pixel unit corresponding to the first display area are turned black in turn, so that the first view area Q1 can be viewed.
  • the image of one display area is alternately displayed with the image of the second display area, so that the complete video can be viewed in the first view area Q1 without loss of resolution.
  • the display method provided by the embodiment can not only realize the function of dual-view display, but also adjust the viewing angle of the image viewed in the two viewing zones, in particular, black-out the pixel unit corresponding to one of the viewing zones. After processing, the image displayed in the other viewport is a narrow-angle image, so it is safer when viewing private content.

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Abstract

公开了一种显示装置及其显示方法,可解决现有的双视显示装置视角不可调的问题。显示装置包括显示面板(200),以及设置在显示面板(200)出光侧的动态光栅(100)。动态光栅(100)能改变其开口区(S1)的宽度和位置,以控制显示面板(200)发出的光的出射方向。

Description

显示装置及其显示方法 技术领域
本发明属于显示技术领域,具体涉及显示装置及其显示方法。 背景技术
平板显示器具有高画质、 体积小、 重量轻、 低电压驱动、 低 消耗功率及应用范围广等优点, 因此被广泛应用于中、 小型可携 式电视、 移动电话、 摄录放影机、 笔记本电脑、 台式显示器、 车 用显示器、 以及投影电视等消费性电子或电脑产品中, 并已逐渐 取代阴极射线管 ( Cathode Ray Tube; CRT )成为显示器的主流。 近年来, 平板显示器的市场销量大增, 尤其是在电脑领域。 而大 面积、 高解析度、 广视角与快速的反应时间等要求, 也已成为消 费者评判平板显示器的优劣的关键所在。
虽然广视角对平板显示器的功能性而言日益重要, 然而在某 些操作场合, 平板显示器的广视角功能却无法兼顾私密性, 以保 护使用者的隐私。 例如, 虽然具有广视角功能的液晶显示器可以 让更多人分享荧幕图像, 但却无法防止旁人窥视某些不予公开的 私密画面内容。
如图 1所示, 为了解决上述问题, 现有技术提供了一种双视 显示装置, 包括显示面板 200以及设置在显示面板 200出光面侧 的光栅 10,所述光栅 10是由透明条纹和遮光条纹间隔排列组成的 光学器件。双视显示装置的工作原理是: 位于第一视区 Q1的用户 透过光栅 10只能看到显示面板 200上的一部分像素单元 (即图 1 中阴影部分的像素单元) , 而位于第二视区 Q2 的用户透过光栅 10只能看到显示面板 200上的另一个部分像素单元 (即图 1中无 阴影部分的像素单元) , 这样用户在第一视区 Q1和第二视区 Q2 可分别看到显示面板的不同位置,可将用户在第一视区 Q1看到的 显示面板的位置定义为第一显示区,将用户在第二视区 Q2看到的 显示面板的位置定义为第二显示区, 只要使第一显示区和第二显 示区分别显示不同图像, 即可在一个显示面板上同时为处于不同 视区的用户显示两幅不同的图像, 因而实现了双视的功能, 而且 还提高了两个视区用户的私密性。 但是, 现有的双视显示装置在 用户观看所述两幅不同图像时的视角不可调, 即两个视区的位置 固定, 也就是说, 用户只能沿固定的方向才能观看到双视显示装 置上显示的相应图像。
因此需要一种视角可调的双视显示装置, 使得双视显示装置 可以依照用户的需求来选择和调整相应显示画面的视角宽窄。 发明内容
本发明所要解决的技术问题包括, 针对上述现有技术中的不 足, 提供一种视角可调的显示装置及其显示方法。
解决本发明技术问题所采用的技术方案是一种显示装置, 包 括显示面板, 以及设在所述显示面板的出光面侧的动态光栅, 所 述动态光栅能改变其开口区的宽度和 /或位置。
本发明的显示装置的动态光栅能改变其开口区的宽度和 /或 位置, 使得显示面板发出的通过该动态光栅的光的方向可以改变, 所以该显示装置可以显示视角可调的两幅图像或两个视频 (所述 视频是由多幅连续的图像构成的) 。
优选的是, 所述动态光栅的开口区的长度方向与显示面板的 像素单元的行方向间的夹角大于 0度小于 90度。
优选的是, 所述动态光栅的开口区的长度方向与显示面板的 像素单元的行方向垂直。
优选的是, 所述显示面板和动态光栅平行设置。
所述显示面板为 OLED显示面板、 等离子显示面板、 液晶显 示面板中的任意一种。
优选的是, 所述动态光栅为液晶光栅、 电润湿光栅、 电子墨 水光栅中任意一种。 进一步优选的是, 所述显示面板为液晶显示面板, 所述动态 光栅为液晶光栅; 其中, 所述液晶光栅包括: 第一基板、 第二基 板、 第一偏振片以及位于所述第一基板与第二基板之间的液晶层; 所述第一基板的靠近所述液晶层的一侧设有块状电极, 所述第二 基板的靠近所述液晶层的一侧设置有多个并排设置且相互绝缘的 条状电极; 或者, 所述第一基板的靠近所述液晶层的一侧设有多 个并排设置且相互绝缘的条状电极, 所述第二基板的靠近所述液 晶层的一侧设置有块状电极; 所述第一偏振片设于所述液晶光栅 的出光侧; 每个所述条状电极分别接独立的电压信号。
进一步优选的是, 所述动态光栅为液晶光栅; 所述液晶光栅 包括: 第一基板、 第二基板、 第一偏振片、 第二偏振片以及位于 所述第一基板与第二基板之间的液晶层; 所述第一基板的靠近所 述液晶层的一侧设有块状电极, 所述第二基板的靠近所述液晶层 的一侧设置有多个并排设置且相互绝缘的条状电极; 或者, 所述 第一基板的靠近所述液晶层的一侧设有多个并排设置且相互绝缘 的条状电极, 所述第二基板的靠近所述液晶层的一侧设置有块状 电极; 所述第一偏振片设于所述液晶光栅的出光侧, 所述第二偏 振片设于所述液晶光栅的入光侧; 每个所述条状电极分别接独立 的电压信号。
解决本发明技术问题所采用的技术方案是上述显示装置的显 示方法, 所述显示方法具体包括:
在显示过程中, 改变动态光栅的开口区的宽度和 /或位置; 在所述动态光栅的开口区的宽度和 /或位置发生变化之前, 将 在第一视区观看到的显示面板的位置定义为第一显示区, 将在第 二视区观看到的显示面板的位置定义为第二显示区; 所述显示装 置的显示面板分为第一显示区和第二显示区。
本发明的显示方法可以分别从两个视区观看到两个显示区的 不同图像或视频且两个显示区的图像或视频的视角可调。
优选的是, 将显示面板中第一显示区对应的像素单元置黑, 并使显示面板中第二显示区对应的像素单元显示图像; 或者, 将显示面板中第二显示区对应的像素单元置黑, 并使 显示面板中第一显示区对应的像素单元显示图像。
优选的是, 所述改变动态光栅的开口区的宽度和 /或位置具体 为:
在显示过程中, 通过改变改变动态光栅的开口区的宽度和 /或 位置, 使得在第一视区能轮流观看到第一显示区和第二显示区显 示的图像, 在第二视区能轮流观看到第二显示区和第一显示区显 示的图像; 其中, 当在第一视区能观看到第一显示区显示的图像 时, 在第二视区能观看到第二显示区显示的图像, 而当在第一视 区能观看到第二显示区显示的图像时, 在第二视区能观看到第一 显示区显示的图像。
优选的是, 轮流将显示面板中第二显示区对应的像素单元和 第一显示区对应的像素单元置黑, 或者轮流将显示面板中第一显 示区对应的像素单元和第二显示区对应的像素单元置黑, 并在第 二显示区对应的像素单元置黑时, 使第一显示区对应的像素单元 显示图像, 在第一显示区对应的像素单元置黑时, 使第二显示区 对应的像素单元显示图像, 且所述第一显示区对应的像素单元显 示图像与所述第二显示区对应的像素单元显示图像能够组合成完 整的图像。
进一步优选的是, 所述显示面板的刷新率至少为 120Hz。 附图说明
图 1为现有的双视显示装置结构图;
图 2为本发明的实施例 1的显示装置结构图;
图 3为本发明的实施例 1的显示装置通过其动态光栅实现视 角可调的原理图;
图 4为图 2中动态光栅的一种结构的俯视图;
图 5为分别在第一视区和第二视区观看到的图 4所示动态光 栅对应的显示装置显示的图像的示意图;
图 6为图 2中动态光栅的另一种结构的俯视图; 图 7为分别在第一视区和第二视区观看到的图 6所示动态光 栅对应的显示装置显示的图像的示意图;
图 8为本发明的实施例 1的显示装置的显示面板为液晶显示 面板的结构图; 以及,
图 9为本发明的实施例 1的显示装置的显示面板为非液晶显 示面板的结构图。 其中附图标记为: 10、 光栅; 100、 动态光栅; 101、 第一基 板; 102、 第二基板; 103、 块状电极; 104、 条状电极; 105、 第 一偏振片; 106、 第二偏振片; 200、 显示面板; 201、 阵列基板;
202、 彩膜基板; 203、 入射偏振片; 204、 出射偏振片; 205、 亚 像素; 2051、 红色或绿色或蓝色子像素; 2052、 黑矩阵; Sl、 动 态光栅的开口区; S2、 动态光栅的遮光区; Ql、 第一视区; Q2、 第二视区。 具体实施方式
为使本领域技术人员更好地理解本发明的技术方案, 下面结 合附图和具体实施方式对本发明作进一步详细描述。 实施例 1 :
如图 2所示,本实施例提供一种显示装置,包括显示面板 200, 和设在显示面板的出光面侧的动态光栅 100,该动态光栅 100能改 变其开口区 S1 的宽度和 /或位置, 以控制显示面板 200发出的光 的出射方向。
优选地, 所述显示面板 200和动态光栅 100平行设置, 以获 得更好的显示效果。
由于本实施例所述显示装置的动态光栅 100的开口区 S1的宽 度和 /或位置可以改变, 使得显示面板 200发出的通过该动态光栅 100的光的方向可以改变,故显示装置可以显示视角可调的两幅图 像或两个视频 (所述视频是由多幅连续的图像构成的) 。 为本领域技术人员所知的是, 显示装置的可视角度与光栅的 节距(即光栅中相邻的遮光区 S2和开口区 S1的宽度之和) 、 光 栅的开口区 S1的宽度以及光栅与显示面板 200间的距离有一定的 关系, 结合图 3所示, 更清楚的说明该显示装置视角可调的原理: 以所述显示面板 200为液晶显示面板为例, 液晶显示面板的 一个亚像素 205的宽度(即红色或绿色或蓝色子像素 2051和与其 相邻的一个黑矩阵 2052列 /行的宽度之和) Ps=p+m, 其中, 一个 黑矩阵(BM ) 2052列 /行的宽度为 m, 动态光栅 100的开口区 S1 的宽度为 a 为可变值) , 动态光栅 100与液晶显示面板间的距 离为 h。 图 3中,在动态光栅 100的入光面侧和出光面侧均设置有 透明介质层, 以起到防护作用, 所述透明介质层的折射率为 n。 可 见, 上述各参数中, m、 p、 n、 h均为常量, a为变量。
需要说明的是, 液晶显示面板包括多根相互平行的栅极线和 多根相互平行的数据线, 多根栅极线与多根数据线交叉定义多个 亚像素单元, 为防止栅极线和数据线漏光, 在栅极线和数据线对 应的位置处均设置有黑矩阵, 故黑矩阵呈网状结构, 也可以说, 黑矩阵包括多个相互平行的黑矩阵列和多个相互平行的黑矩阵 行, 多个黑矩阵列和多个黑矩阵行交叉设置。
为筒化计算,如图 3所示,使动态光栅 100的各个开口区 Sl、 各个遮光区 S2 分别对应液晶显示面板的一个黑矩阵列 /行, 各个 开口区 S1对应的黑矩阵列 /行与各个遮光区 S2对应的黑矩阵列 / 行间隔排列, 并使每个开口区 S1 对应的黑矩阵列 /行位于该开口 区 S1的正中间。
现以第二视区 Q2 为例说明其有效视角的计算方法, 如图 3 所示, 一个亚像素 205发出的光射入动态光栅 100入光面侧的透 明介盾层后, 依次经动态光栅 100的开口区 Sl、 动态光栅 100出 光面侧的透明介质层射出至空气中, 其中, α2为入射角的最小值, β2为入射角的最大值,(9CT-0H)为与入射角 α2对应的折射角,(9(^0 为与入射角 β2对应的折射角, 则第二视区 Q2 的有效视角等于 (ai-β ο 根据折射定律可得出以下公式:
Figure imgf000008_0001
sin(9Cf-p1)=nsinp2 (2)
tana2=(a-m)/ 2/h=(a-m)/ 2h (3)
tanp2=(m+p-(a-m)/2)/h=(3m+2p-a)/2h (4)
将式 (3)代入式 (1)得出:
ai=9(f-arcsin(nsin(arctan((a-m)/2h))) (5)
将式 (4)代入式 (2)得出:
β 1 =9(f-arc sin(nsin(arctan((3 m+2p-a)/ 2h))) (6)
则第二视区 Q2的有效视角: od-Pf
arcsin(nsin(arctan((3m+2p-a)/2h)))-arcsin(nsin(arctan((a-m)/2h))) (7) 同理, 可计算出第一视区 Q1的有效视角(ο^-βθ»
从式 (7)中很容易看出, 由于 m、 p、 n、 h均为常量, 则当动 态光栅 100的开口区 S1的宽度 a变化时, 有效视角 也会随 之发生变化, 因此改变动态光栅 100开口区 S1的宽度, 可改变第 一视区 Q1 和 /或第二视区 Q2 的视角。 同理, 改变动态光栅 100 的开口区 S1的位置, 可同时改变第一视区 Q1和第二视区 Q2的 视角; 同时改变动态光栅 100的开口区 S1的宽度和位置, 可改变 第一视区 Q1和 /或第二视区 Q2的视角。
优选地, 如图 4所示, 所述显示装置中动态光栅 100的开口 区 S1的长度方向与显示面板 200的像素单元的行方向(一般将显 示面板的栅极线的方向为像素单元的行方向, 数据线的方向为像 素单元的列方向)垂直, 或者说, 动态光栅 100的开口区 S1的长 度方向与显示面板 200的像素单元的列方向平行, 则分别在第一 视区和第二视区观看到的显示装置显示的图像的示意图如图 5所 示, 其中 1表示在第一视区 Q1观看到的图像, 2表示在第二视区 Q2观看到的图像, 可见从显示装置的左侧和右侧可分别观看到两 幅不同的图像。 需要说明的是, 上述说明显示装置视角可调的原 理时所应用的动态光栅的结构与图 4所示结构相同。
优选地, 如图 6所示, 所述显示装置中动态光栅 100的开口 区 SI的长度方向与显示面板 200的像素单元的行方向间的夹角大 于 0度小于 90度, 则分别在第一视区和第二视区观看到的显示装 置显示的图像的示意图如图 7所示, 其中 1表示在第一视区 Q1 观看到的图像, 2表示在第二视区 Q2观看到的图像, 可见, 从显 示装置的左上角和右下角, 或者从显示装置的左下角和右上角可 分别观看到两幅不同的图像。 同时, 由于动态光栅 100的开口区 S1的长度方向与显示面板 200的像素单元的行方向间的夹角大于 0度小于 90度, 因此可以减轻动态光栅 100与显示面板 200上黑 矩阵(BM )之间因干涉而产生的摩尔纹。
当然,图 4和图 6所示结构的动态光栅 100的开口区 S1的宽 度和 /或位置发生变化时,显示面板 200发出的光透过动态光栅 100 后, 出射方向就会发生改变, 从而使得用户从第一视区 Q1 和 /或 第二视区 Q2观看图像或视频时的视角也是可调的。
优选地, 上述显示装置的显示面板 200为 OLED显示面板、 等离子显示面板、 液晶显示面板中的任意一种, 当然其他结构的 显示面板也是可以的。
其中, 动态光栅 100优选为: 液晶光栅、 电润湿光栅、 电子 墨水光栅中任意一种。 当然动态光栅 100不局限于上述三种, 只 要是能实现遮光区和开口区 (即透光区) 的宽度和 /或位置可调的 器件即可。
如图 8所示, 进一步优选地, 当显示装置的显示面板 200为 液晶显示面板时, 若动态光栅 100为液晶光栅, 则该液晶光栅包 括: 第一基板 101、 第二基板 102、 第一偏振片 105以及位于所述 第一基板 101与第二基板 102之间的液晶层 (图中未示) , 所述 第一基板 101的靠近所述液晶层的一侧设有块状电极 103,所述第 二基板 102的靠近所述液晶层的一侧设置有多个并排设置且相互 绝缘的条状电极 104(其中块状电极 103和条状电极 104的位置关 系可以互换) , 第一偏振片 105设于液晶光栅 100的出光侧。 由 于该显示面板 200为液晶显示面板, 则显示面板 200包括入射偏 振片 203、 阵列基板 201、 出射偏振片 204和彩膜基板 202, 其中, 入射偏振片 203设于阵列基板 201的入光面外侧,出射偏振片 204 设于彩膜基板 202的出光面外侧。
其中, 液晶显示面板发出的并透过其中出射偏振片 204后的 光为偏振光, 此时, 液晶光栅的每个条状电极 104分别接独立的 电压信号。 在液晶显示面板的出射偏振片 204的透振方向与液晶 光栅的第一偏振片 105 的透振方向垂直时, 给液晶光栅中一部分 条状电极 104通电压, 使这部分通电压的条状电极 104对应的液 晶发生旋转, 并使得液晶显示面板发出的偏振光在所述通电压的 条状电极 104对应的液晶区域内旋转 90° , 因而液晶显示面板发 出的偏振光中经过所述通电压的条状电极 104对应的液晶区域的 那部分光可完全透过液晶光栅的第一偏振片 105(所述通电压的条 状电极 104对应的液晶区域即为动态光栅 100的开口区 S1 ) ; 对 于液晶光栅中未通电的那部分条状电极 104,这部分未通电压的条 状电极 104对应的液晶没有发生旋转, 则液晶显示面板发出的偏 振光中经过所述未通电压的条状电极 104对应的液晶区域的那部 分光无法透过液晶光栅的第一偏振片 105(所述未通电压的条状电 极 104对应的液晶区域即为动态光栅 100的遮光区 S2 ) , 故显示 为黑。 相对的, 在液晶显示面板的出射偏振片 204的透振方向与 液晶光栅的第一偏振片 105 的透振方向平行时, 给液晶光栅中一 部分条状电极 104通电压时, 使这部分通电压的条状电极 104对 应的液晶发生旋转, 并使得液晶显示面板发出的偏振光在所述通 电压的条状电极 104对应的液晶区域内旋转 90° , 因而液晶显示 面板发出的偏振光中经过所述通电压的条状电极 104对应的液晶 区域的那部分光无法透过液晶光栅的第一偏振片 105, 故显示为 黑; 对于液晶光栅中未通电的那部分条状电极 104, 这部分未通电 压的条状电极 104对应的液晶没有发生旋转, 则液晶显示面板发 出的偏振光中经过所述未通电压的条状电极 104对应的液晶区域 的那部分光可完全透过液晶光栅的第一偏振片 105。
由于液晶光栅中的每个条状电极 104均可通过独立电压信号 控制, 所以液晶光栅中有光透过的区域和没有光透过的区域的宽 度和 /或位置可调, 因此显示面板 200发出的光经液晶光栅后的出 射角度是可调的,从而通过控制液晶光栅 100的开口区 S1的宽度 和 /或位置,即可得到两幅视角可调的图像或两个视角可调的视频。
如图 9所示, 当然, 对于其他结构的显示装置, 其显示面板 200没有设置偏振片 (例如为 OLED显示装置) , 则此时其液晶 光栅包括: 第一基板 101、 第二基板 102、 第一偏振片 105、 第二 偏振片 106以及位于所述第一基板 101与第二基板 102之间的液 晶层, 所述第一基板 101 的靠近所述液晶层的一侧设有块状电极 103, 所述第二基板 102的靠近所述液晶层的一侧设置有多个并排 设置且相互绝缘的条状电极 104 (其中块状电极 103 和条状电极 104的位置关系可以互换), 所述第一偏振片 105设于所述液晶光 栅 100的出光侧, 所述第二偏振片 106设于所述液晶光栅 100的 入光侧。 其中, 该液晶光栅的第二偏振片 106相当于上述液晶显 示面板的出射偏振片 204, 该显示装置的工作原理同上述显示装 置, 此处不再重复追述。
本领域技术人员都能理解的是, 电润湿光栅和电子墨水光栅 也是采用控制电压的方式来控制其开口区 S1 的宽度和 /或位置, 从而调整显示装置的可视角度。 实施例 2:
本实施例针对实施例 1 的显示装置提供一种显示方法。 所述 显示方法具体包括: 在显示过程中, 改变动态光栅的开口区的宽 度和 /或位置, 以改变第一视区 Q1的视角和 /或第二视区 Q2的视 角。
在动态光栅的开口区发生变化(包括开口区的宽度和 /或位置 发生变化)之前, 将用户在第一视区 Q1观看到的显示面板的位置 定义为第一显示区,将用户在第二视区 Q2观看到的显示面板的位 置定义为第二显示区, 故所述显示装置的显示面板可分为第一显 示区和第二显示区。 而且, 在动态光栅的开口区发生变化之前, 用户在第一视区 Q1能观看到第一显示区显示的图像,同时在第二 视区 Q2能观看到第二显示区显示的图像;在动态光栅的开口区发 生变化之后,第一视区 Q1的视角和 /或第二视区 Q2的视角可能相 应发生变化。 本领域技术人员可以理解的是, 相对于在该显示装 置中不设有光栅而只显示一幅图像或一个视频的情况而言, 上述 显示方法既可同时显示两幅图像或两个视频, 又可改变所述两幅 图像或两个视频的视角, 但缺点是, 用户在任意一个视区观看到 的图像或视频的分辨率要降低一半。
优选地, 将显示面板中第一显示区对应的像素单元置黑, 并 使显示面板中第二显示区对应的像素单元正常显示图像;
或者, 将显示面板中第二显示区对应的像素单元置黑, 并使 显示面板中第一显示区对应的像素单元正常显示图像。
具体地, 将显示面板中第一显示区对应的像素单元置黑, 并 使显示面板中第二显示区对应的像素单元正常显示图像, 则在第 一显示区对应的第一视区 Q1无法观看到图像,而在第二显示区对 应的第二视区 Q2能观看到图像, 使得在第二视区 Q2观看私密内 容时更加安全, 并能通过调整动态光栅的开口区的宽度和 /或位置 来调整第二视区 Q2 的视角, 但观看到的图像的分辨率要降低一 半;
或者, 将显示面板中第二显示区对应的像素单元置黑, 并使 显示面板中第一显示区对应的像素单元正常显示图像, 则在第二 显示区对应的第二视区 Q2无法观看到图像,而在第一显示区对应 的第一视区 Q1能观看到图像, 使得在第一视区 Q1观看私密内容 时更加安全, 并能通过调整动态光栅的开口区的宽度和 /或位置来 调整第一视区 Q1的视角, 但观看到的图像的分辨率要降低一半。
优选地, 在显示过程中, 通过改变动态光栅的开口区的宽度 和 /或位置, 使得在第一视区 Q1 能轮流观看到第一显示区和第二 显示区显示的图像,在第二视区 Q2能轮流观看到第二显示区和第 一显示区显示的图像, 从而在第一视区 Q1和第二视区 Q2均能不 损失分辨率地观看到完整的视频。
在动态光栅的开口区发生变化之后, 用户在第一视区 Q1 和 第二视区 Q2观看到的图像也可能发生变化, 例如, 将动态光栅的 开口区和遮光区的位置互换(开口区和遮光区的宽度均不变)之 后, 用户在第一视区 Q1就无法观看到第一显示区显示的图像, 只 能观看到第二显示区显示的图像, 同时, 用户在第二视区 Q2也无 法观看到第二显示区显示的图像, 只能观看到第一显示区显示的 图像。也就是说, 当用户在第一视区 Q1能观看到第一显示区显示 的图像时,在第二视区 Q2能观看到第二显示区显示的图像; 而当 用户在第一视区 Q1能观看到第二显示区显示的图像时,在第二视 区 Q2能观看到第一显示区显示的图像。本实施例中, 在动态光栅 的开口区发生变化之前,用户在第一视区 Q1能观看到第一显示区 显示的图像, 同时在第二视区 Q2 能观看到第二显示区显示的图 像, 例如, 用户在第一视区 Q1能观看到显示面板上奇数列像素单 元显示的图像,同时在第二视区 Q2能观看到显示面板上偶数列像 素单元显示的图像; 在动态光栅的开口区发生变化之后, 用户在 第一视区 Q1 能观看到第二显示区显示的图像, 同时在第二视区 Q2 能观看到第一显示区显示的图像, 例如, 用户在第一视区 Q1 能观看到显示面板上偶数列像素单元显示的图像, 同时在第二视 区 Q2能观看到显示面板上奇数列像素单元显示的图像。如果在动 态光栅的开口区发生变化之前, 使显示面板上奇数列像素单元显 示第一幅图像的奇数列像素, 同时使偶数列像素单元显示第二幅 图像的偶数列像素, 在动态光栅的开口区发生变化之后, 使显示 面板上偶数列像素单元显示第一幅图像的偶数列像素, 同时使奇 数列像素单元显示第二幅图像的奇数列像素, 可见, 在动态光栅 的开口区发生变化前后,用户在第一视区 Q1能依次观看到第一显 示区和第二显示区显示的图像, 即依次观看到第一幅图像的奇数 列像素和偶数列像素, 从而能不损失分辨率地完整观看到第一幅 图像,且在第二视区 Q2能依次观看到第二显示区和第一显示区显 示的图像, 即依次观看到第二幅图像的偶数列像素和奇数列像素, 从而能不损失分辨率地完整观看到第二幅图像。
可见, 通过轮流调整动态光栅的开口区的位置, 即轮流互换 动态光栅的开口区和遮光区的位置, 可实现在任意一个视区观看 到第一显示区的图像与第二显示区的图像交替显示, 或者观看到 第二显示区的图像与第一显示区的图像交替显示, 从而在第一视 区 Q1和第二视区 Q2均能不损失分辨率地观看到完整的视频。 但 这也导致了显示面板的刷新率下降一半, 一般显示面板刷新率为 60HZ, 此时, 可以进一步优选所述显示面板为不小于 120HZ刷新 率的显示面板, 则实现全分辨率的可调视角控制。
进一步优选地, 轮流将显示面板中第二显示区对应的像素单 元和第一显示区对应的像素单元置黑, 或者轮流将显示面板中第 一显示区对应的像素单元和第二显示区对应的像素单元置黑, 并 在第二显示区对应的像素单元置黑时, 使第一显示区对应的像素 单元显示图像, 在第一显示区对应的像素单元置黑时, 使第二显 示区对应的像素单元显示图像, 且所述第一显示区对应的像素单 元显示图像与所述第二显示区对应的像素单元显示图像能够组合 成完整的图像。
举例说明, 在第一时刻, 使第一显示区对应的像素单元显示 图像, 将第二显示区对应的像素单元置黑, 通过调整动态光栅的 开口区的宽度和 /或位置, 可在第一视区 Q1 的视角中看到第一显 示区显示的图像, 如使显示面板上奇数列像素单元显示一幅图像 的奇数列像素, 而在第二视区 Q2无法观看到图像;
在第二时刻, 将动态光栅的开口区与遮光区的位置置换(开 口区和遮光区的宽度均不变) , 使第二显示区对应的像素单元显 示图像, 将第一显示区对应的像素单元置黑, 可在第一视区 Q1 的视角中看到第二显示区显示的图像, 如使显示面板上偶数列像 素单元显示一幅图像的偶数列像素,而在第二视区 Q2无法观看到 图像。
可见, 在第一时刻, 在第一视区 Q1 的视角中能观看到一幅 图像的奇数列像素, 而在第二时刻, 在第一视区 Q1的视角中能观 看到一幅图像的偶数列像素, 故第一显示区对应的像素单元显示 图像与第二显示区对应的像素单元显示图像能够组合成完整的图 像, 从而能够在第一视区 Q1不损失分辨率地观看到完整的图像, 且观看所述图像的视角可调, 但在第二视区 Q2无法观看到图像, 使得在第一视区 Q1观看私密内容时更加安全。 而且,轮流经历第 一时刻和第二时刻, 即轮流将显示面板中第二显示区对应的像素 单元和第一显示区对应的像素单元置黑, 实现了在第一视区 Q1 能够观看到第一显示区的图像与第二显示区的图像交替显示, 从 而在第一视区 Q1能不损失分辨率地观看到完整的视频。
同理, 轮流将显示面板中第一显示区对应的像素单元和第二 显示区对应的像素单元置黑,能够在第二视区 Q2不损失分辨率地 观看到完整的图像或视频,但在第一视区 Q1无法观看到图像或视 频, 使得在第二视区 Q2观看私密内容时更加安全。 综上所述, 本实施例提供的显示方法不仅可以实现双视显示 的功能, 且在两视区观看到的图像的视角可调, 特别是将其中一 个视区所对应的像素单元进行置黑处理后, 另一个视区显示的图 像为窄视角图像, 因此在观看私密内容时, 更加安全。 可以理解的是, 以上实施方式仅仅是为了说明本发明的原理 而采用的示例性实施方式, 然而本发明并不局限于此。 对于本领 域内的普通技术人员而言, 在不脱离本发明的精神和实质的情况 下, 可以做出各种变型和改进, 这些变型和改进也视为本发明的 保护范围。

Claims

1. 一种显示装置, 包括显示面板, 其特征在于, 还包括设在 所述显示面板的出光面侧的动态光栅, 所述动态光栅能改变其开 口区的宽度和 /或位置。
2. 根据权利要求 1所述的显示装置, 其特征在于, 所述动态 光栅的开口区的长度方向与显示面板的像素单元的行方向间的夹 角大于 0度小于 90度。
3. 根据权利要求 1所述的显示装置, 其特征在于, 所述动态 光栅的开口区的长度方向与显示面板的像素单元的行方向垂直。
4. 根据权利要求 1所述的显示装置, 其特征在于, 所述显示 面板和动态光栅平行设置。
5. 根据权利要求 1~4中任意一项所述的显示装置, 其特征在 于, 所述显示面板为 OLED显示面板、 等离子显示面板、 液晶显 示面板中的任意一种。
6. 根据权利要求 1~4中任意一项所述的显示装置, 其特征在 于, 所述动态光栅为液晶光栅、 电润湿光栅、 电子墨水光栅中任 意一种。
7. 根据权利要求 6所述的显示装置, 其特征在于, 所述显示面板为液晶显示面板, 所述动态光栅为液晶光栅; 其中, 所述液晶光栅包括: 第一基板、 第二基板、 第一偏振 片以及位于所述第一基板与第二基板之间的液晶层;
所述第一基板的靠近所述液晶层的一侧设有块状电极, 所述 第二基板的靠近所述液晶层的一侧设置有多个并排设置且相互绝 缘的条状电极;
或者, 所述第一基板的靠近所述液晶层的一侧设有多个并排 设置且相互绝缘的条状电极, 所述第二基板的靠近所述液晶层的 一侧设置有块状电极;
所述第一偏振片设于所述液晶光栅的出光侧;
每个所述条状电极分别接独立的电压信号。
8. 根据权利要求 6所述的显示装置, 其特征在于, 所述动态光栅为液晶光栅, 其包括: 第一基板、 第二基板、 第一偏振片、 第二偏振片以及位于所述第一基板与第二基板之间 的液晶层;
所述第一基板的靠近所述液晶层的一侧设有块状电极, 所述 第二基板的靠近所述液晶层的一侧设置有多个并排设置且相互绝 缘的条状电极;
或者, 所述第一基板的靠近所述液晶层的一侧设有多个并排 设置且相互绝缘的条状电极, 所述第二基板的靠近所述液晶层的 一侧设置有块状电极;
所述第一偏振片设于所述液晶光栅的出光侧, 所述第二偏振 片设于所述液晶光栅的入光侧;
每个所述条状电极分别接独立的电压信号。
9. 一种如权利要求 1~8中任意一项所述的显示装置的显示方 法, 其特征在于, 所述显示方法具体包括:
在显示过程中, 改变动态光栅的开口区的宽度和 /或位置; 其中, 在所述动态光栅的开口区的宽度和 /或位置发生变化之 前, 将在第一视区观看到的显示面板的位置定义为第一显示区, 将在第二视区观看到的显示面板的位置定义为第二显示区; 所述 显示装置的显示面板分为第一显示区和第二显示区。
10. 根据权利要求 9所述的显示方法, 其特征在于, 将显示面板中第一显示区对应的像素单元置黑, 并使显示面 板中第二显示区对应的像素单元显示图像;
或者, 将显示面板中第二显示区对应的像素单元置黑, 并使 显示面板中第一显示区对应的像素单元显示图像。
11. 根据权利要求 9所述的显示方法, 其特征在于, 所述改变动态光栅的开口区的宽度和 /或位置具体为: 在显示过程中, 通过改变改变动态光栅的开口区的宽度和 /或 位置, 使得在第一视区能轮流观看到第一显示区和第二显示区显 示的图像, 在第二视区能轮流观看到第二显示区和第一显示区显 示的图像;
其中, 当在第一视区能观看到第一显示区显示的图像时, 在 第二视区能观看到第二显示区显示的图像, 而当在第一视区能观 看到第二显示区显示的图像时, 在第二视区能观看到第一显示区 显示的图像。
12. 根据权利要求 11所述的显示方法, 其特征在于, 轮流将显示面板中第二显示区对应的像素单元和第一显示区 对应的像素单元置黑, 或者轮流将显示面板中第一显示区对应的 像素单元和第二显示区对应的像素单元置黑, 并在第二显示区对 应的像素单元置黑时, 使第一显示区对应的像素单元显示图像, 在第一显示区对应的像素单元置黑时, 使第二显示区对应的像素 单元显示图像, 且所述第一显示区对应的像素单元显示图像与所 述第二显示区对应的像素单元显示图像能够组合成完整的图像。
13. 根据权利要求 11或 12所述的显示方法, 其特征在于, 所述显示面板的刷新率至少为 120Hz。
PCT/CN2013/088041 2013-07-23 2013-11-28 显示装置及其显示方法 Ceased WO2015010402A1 (zh)

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