WO2017124782A1 - 背光源、背光模组、显示装置及显示系统 - Google Patents

背光源、背光模组、显示装置及显示系统 Download PDF

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Publication number
WO2017124782A1
WO2017124782A1 PCT/CN2016/101806 CN2016101806W WO2017124782A1 WO 2017124782 A1 WO2017124782 A1 WO 2017124782A1 CN 2016101806 W CN2016101806 W CN 2016101806W WO 2017124782 A1 WO2017124782 A1 WO 2017124782A1
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WIPO (PCT)
Prior art keywords
display
backlight
light
light source
interference
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PCT/CN2016/101806
Other languages
English (en)
French (fr)
Inventor
张春兵
展先娟
赖意强
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/521,458 priority Critical patent/US20180088415A1/en
Publication of WO2017124782A1 publication Critical patent/WO2017124782A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • G02F1/1336—Illuminating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • 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
    • 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
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133624—Illuminating devices characterised by their spectral emissions
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background

Definitions

  • Embodiments of the present invention relate to a backlight, a backlight module, a display device, and a display system.
  • the embodiment of the invention provides a backlight, a backlight module, a display device and a display system for implementing the anti-peeping function of the display device.
  • An embodiment of the present invention provides a backlight, including: a display light source and an interference light source; dividing a frame time into a display time period and an interference time period, wherein the display light source provides a backlight during the display time period; and during the interference time period, The interference light source provides a backlight.
  • the backlight is an LED backlight.
  • the backlight comprises a light emitting unit of a first color and a light emitting unit of a second color, wherein the first color and the second color are mutually complementary colors.
  • the LED backlight includes six color-emitting units of red, cyan, green, magenta, blue, and yellow; wherein the red, green, and blue light-emitting units provide a display light source; The light-emitting unit of the three colors of the product and the yellow color provides an interference light source.
  • the embodiment of the present invention provides a backlight module, including: the backlight source provided by the embodiment of the present invention, and a control module for controlling the backlight to provide backlight; the control module is used for controlling The display source of the backlight provides backlighting during the display period, and the interfering source that controls the backlight provides backlighting during the interfering period.
  • the embodiment of the present invention provides a display device, including: a display panel for displaying a screen, and the backlight module provided by the embodiment of the present invention; wherein, in the display period, the display light source in the backlight is The display panel provides a backlight; during the interference period, the interference light source in the backlight provides backlight for the display panel.
  • the display panel includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, each corresponding to each sub-pixel A two-color lighting unit, wherein one color of the lighting unit provides a display light source and the other color of the lighting unit provides an interference light source.
  • the first sub-pixel on the display panel corresponds to the red and blue light-emitting units
  • the second sub-pixel corresponds to the green and the The light-emitting unit of the color
  • the third sub-pixel corresponds to the light-emitting unit of two colors of blue and yellow.
  • the screen displayed by the display panel in one frame time is a monochrome screen.
  • the monochrome screen is a white screen.
  • the brightness of the screen displayed by the display panel during the display time period and the interference time period is the same within one frame time.
  • the embodiment of the present invention provides a display system, including: the display device provided by the embodiment of the present invention, and the shutter glasses; wherein, during the display period, the display device displays a normal screen, and the shutter glasses are in a light transmitting state. During the interference period, the display device displays an interference picture, and the shutter glasses are in a light blocking state.
  • FIG. 1A and 1B are schematic structural diagrams of a backlight provided by an embodiment of the present invention.
  • FIG. 2 is a light emitting unit of each color and a display panel in a backlight according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a display system according to an embodiment of the present invention.
  • Embodiments of the present invention provide a backlight, which may include a display light source and an interference light source.
  • the one frame time is divided into a display time period and an interference time period.
  • the display light source provides a backlight; during the interference time period, the interference light source provides a backlight.
  • the backlight provided by the embodiment of the present invention can be applied to an anti-peeping display device, and the backlight can provide a display light source and an interference light source.
  • the backlight provides a normal display light source in one frame time.
  • the display device can display a normal picture; during the interference time period, the backlight provides an interference light source, and the display device displays an interference picture. Therefore, if the display device is viewed with a matching viewing tool such as shutter glasses, the user can see the normal display screen; however, when the user takes off the shutter glasses, the visual persistence phenomenon of the human eye is observed when viewing the display device.
  • the display screen is close to the monochrome screen, so the display device loses the effect of transmitting the display screen, thereby achieving the purpose of anti-peeping.
  • the backlight is a light emitting diode, such as an inorganic light emitting diode or an organic light emitting diode backlight
  • the inorganic light emitting diode or the organic light emitting diode backlight includes a first color light emitting unit (ie, a light emitting unit that emits light of a first color) and a second color
  • the light emitting unit, the first color and the second color are mutually complementary colors.
  • the inorganic light emitting diode or the organic light emitting diode backlight includes light emitting units of six colors of red (R), cyan (Q), green (G), (P), blue (B), and yellow (Y);
  • the light-emitting units of three colors (R), green (G), and blue (B) provide a display light source; the light-emitting units of three colors of cyan (Q), (P), and yellow (Y) provide an interference light source.
  • embodiments of the present invention are not limited to these specific color backlights and interference light sources, nor are they limited to the linear arrangement as shown in FIG. 1A.
  • a triangular ( ⁇ ) arrangement may be employed, for example, an RBG illumination unit forms a triangle.
  • the QPY illumination unit forms a triangle as shown in FIG. 1B.
  • the backlight provided by the embodiment of the present invention may include six (6) colors of red (R), cyan (Q), green (G), (P), blue (B), and yellow Y. Corresponding backlights are respectively provided in the display time period and the interference time period, wherein the red (R), green (G), and blue (B) light-emitting units provide the display light source during the display time period, and the green (Q) The light-emitting unit of the three colors of (P) and yellow (Y) provides an interference light source during the interference time period, so that the normal display light source is mixed with the interference light source during the display time of the display panel, and the shutter is removed.
  • red (R), green (G), and blue (B) light-emitting units provide the display light source during the display time period
  • the light-emitting unit of the three colors of (P) and yellow (Y) provides an interference light source during the interference time period, so that the normal display light source is mixed with the interference light source during the display time of the display panel
  • the entire display screen is close to the monochrome picture due to the persistence of the human eye, and the display device loses the effect of transmitting the normal display picture information, thereby achieving the purpose of preventing voyeurism.
  • an embodiment of the present invention further provides a backlight module, which may include: the backlight source provided by the embodiment of the present invention, and a control module for controlling the backlight to provide backlight; the control module is used to control the backlight
  • the display source provides backlighting during the display period
  • the interference source that controls the backlight provides backlighting during the interference period.
  • the backlight module provided by the embodiment of the present invention can provide a display light source and an interference light source respectively in one frame time, that is, provide a normal display light source during a display time period, and provide an interference light source during a interference time period, thereby applying the backlight module.
  • the sneak peek display device is prevented, the purpose of anti-peeping display can be achieved.
  • an embodiment of the present invention further provides a display device, which may include: a display panel for displaying a screen, and the backlight module provided by the embodiment of the present invention; display in a backlight during a display period The light source provides backlight for the display panel; during the interference period, the interference light source in the backlight provides backlight for the display panel.
  • the backlight provides a normal display light source when the display panel is in the display time period in one frame time, and the backlight source provides the interference light source when the display panel is in the interference time period.
  • a matching viewing tool such as shutter glasses is worn to view the display device, the user can see the normal display screen; however, when the user removes the shutter glasses, the entire display is viewed due to the persistence of the human eye when viewing the display device. The picture is close to a monochrome picture, so the display device loses the effect of transmitting the display picture information, thereby achieving the purpose of anti-peeping.
  • the display panel includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels, each of the sub-pixels corresponding to two color light-emitting units
  • One of the light emitting units provides a display light source, and the other color of the light emitting unit provides an interference light source.
  • the display panel generally includes a plurality of pixel units arranged in a matrix, each of the pixel units includes a plurality of sub-pixels.
  • the display panel may include a first sub-pixel, a second sub-pixel, and a third Sub-pixels Three sub-pixels, each sub-pixel of the display panel corresponds to two color light-emitting units, wherein one color of the light-emitting unit provides a normal light source for the pixel, and the other provides an interference light source for the pixel.
  • the interference light source is mixed into the normal display light source provided for each sub-pixel of the display panel, so that the screen displayed by the display panel is close to the monochrome image, and the user removes the shutter glasses to view the display.
  • the panel is used, the normal display screen cannot be viewed, and the anti-peeping display of the display panel can be realized.
  • the first sub-pixel SubR on the display panel corresponds to two color red (R) and cyan (Q) light-emitting units
  • the two sub-pixels SubG correspond to two color light-emitting units of green (G) and product (P)
  • the third sub-pixel SubB corresponds to light-emitting units of two colors of blue (B) and yellow (Y).
  • the red light emitting unit and the cyan light emitting unit provide a backlight for the first subpixel as a group of backlights, such that the normal display light source is provided by the red light emitting unit, and the interference light source is provided by the cyan light emitting unit.
  • the red color of the backlight provided for the first sub-pixel is mixed with cyan, and the red and cyan colors are complementary colors, so that the first sub-pixel is close to pure white; the same green light-emitting unit and color light
  • the unit is a set of complementary light sources, and the blue light emitting unit and the yellow light emitting unit are a set of complementary light sources, respectively providing backlights for the second sub-pixels and the third sub-pixels, and finally the display screen of the display panel is close to the white screen, thereby realizing display The anti-peeping feature of the panel.
  • the screen displayed by the display panel in one frame time is a monochrome screen.
  • the interference light source is mixed into the display light source within one frame time, so that each sub-pixel of the display panel emits close to The monochromatic light, in turn, causes the display panel to display a picture that is close to a monochrome image as a whole, and finally enables the display panel to perform an anti-peeping function.
  • the monochrome screen displayed by the display panel may be a white screen.
  • the picture displayed by the display panel can be made close to a white picture, for example, red and cyan are complementary colors, and red is mixed with cyan so that the final color is close to white, so the red light-emitting unit can be
  • the cyan illumination unit is arranged as a set of complementary light sources providing backlights, and the two color illumination units provide backlighting for the same sub-pixel, so that the red color is mixed with cyan, and then the sub-pixels can emit white light; similarly, the green illumination unit can be set with
  • the color light-emitting unit is a set of complementary light sources, and the blue light-emitting unit and the yellow light-emitting unit are a set of complementary light sources, and finally the display screen of the display panel is close to the white screen, thereby realizing the anti-peeping function of the display panel.
  • red and cyan are complementary colors
  • red is mixed with cyan so that the final color is close to white
  • the brightness of the screen displayed by the display panel during the display time period and the interference time period is the same within one frame time.
  • the backlight provides a normal display light source for the display panel.
  • the interference time period the backlight provides an interference light source for the display panel, so that each light-emitting unit corresponds to each sub-pixel on the display panel in one frame time.
  • the display light source and the interference light source are simultaneously ensured that the brightness of the screen displayed by the display panel is the same during the display time period and the interference time period, thereby facilitating the hybrid color to be close to pure white.
  • the red light emitting unit and the cyan light emitting unit provide backlights for the sub-pixels as a set of complementary light sources.
  • the red light emitting unit provides backlight for the display panel during the display period
  • the cyan light emitting unit provides backlight for the display panel during the interference time period.
  • the brightness of the screen displayed in the display panel within one frame time is the same, that is, the red light of the display time period and the brightness of the interference time period are consistent on the display screen, so that the mixed light is pure white light instead of being biased toward Red or cyan, eventually making the display of the display panel a white screen with lost display information.
  • an embodiment of the present invention provides a display system.
  • the display system may include: the display device provided by the embodiment of the present invention.
  • the display system provided by the embodiment of the present invention divides a frame time into a display time period and an interference time period.
  • the display light source in the backlight 01 provides backlighting and shutter for the display panel 02.
  • the glasses 03 are in a light transmitting state; during the interference period, the interference light source in the backlight 01 provides backlighting to the display panel 02, and the shutter glasses 03 are in a light blocking state.
  • the backlight in the display system provided by the embodiment of the present invention can provide a display light source and an interference light source, so that the backlight is provided when the display panel is in the display time period in one frame time by the cooperation of the backlight and the shutter glasses.
  • the normal display light source, the left and right eyes of the shutter glasses are in the light transmitting state at the same time; while the display panel is in the interference time period, the backlight provides the interference light source, and the left and right eyes of the shutter glasses are simultaneously in the light blocking state, so when the shutter glasses are worn to view the display panel
  • the normal display screen can be seen, and when the shutter glasses are viewed, the visual persistence phenomenon of the human eye is observed, and the entire display screen is close to the monochrome image, and the display panel loses the effect of transmitting the display screen, thereby achieving anti-peeping. purpose.
  • the display panel may be a liquid crystal display panel
  • the liquid crystal display panel includes: an array substrate for driving the liquid crystal display panel for display, and an opposite substrate opposite to the array substrate to form a liquid crystal cell;
  • the liquid crystal layer in the liquid crystal cell is disposed. Since the backlight in the above display system provided by the embodiment of the present invention is a color backlight, the array substrate or the opposite substrate may not need to be provided with a color filter.
  • the display panel may be a liquid crystal display panel, and the liquid crystal display panel includes: an array substrate for driving the liquid crystal display panel for display, for filtering light emitted by the backlight a color filter substrate, and a liquid crystal disposed between the array substrate and the color filter substrate; the color filter substrate is a color film substrate without a color film.
  • the display panel is a liquid crystal display panel, and the liquid crystal display panel includes an array substrate for driving the liquid crystal display panel for display, and a color filter substrate for filtering light emitted by the backlight.
  • the liquid crystal layer is formed between the array substrate and the color filter substrate.
  • the color filter substrate is a color film substrate without a color film, and the color film substrate can be The light emitted by the backlight is filtered and used for display on the liquid crystal display panel.
  • Embodiments of the present invention provide a backlight, a backlight module, a display device, and a display system.
  • the backlight includes: a display light source and an interference light source; dividing a frame time into a display time period and an interference time In the display period, the display light source provides backlighting; during the interference time period, the interference light source provides backlight.
  • the backlight provided by the embodiment of the present invention can be applied to an anti-peeping display device, and the backlight can provide a display light source and an interference light source.
  • the backlight provides normal.
  • the display light source, the display device can display a normal picture; during the interference time period, the backlight provides an interference light source, and the display device displays an interference picture.
  • a matching viewing tool such as shutter glasses
  • the user can see the normal display screen.
  • the visual persistence phenomenon of the human eye is observed when viewing the display device.
  • the display screen is close to the monochrome screen, and the display device loses the effect of transmitting the display screen, thereby achieving the purpose of preventing voyeurism.

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Abstract

一种背光源（01）、背光模组、显示装置及显示系统，该背光源（01）包括显示光源（RGB）和干扰光源（QPY）；将一帧时间分为显示时间段和干扰时间段，在显示时间段，显示光源（RGB）提供背光；在干扰时间段，干扰光源（QPY）提供背光。该背光源（01）可以应用于该显示装置，使得该显示装置具有防偷窥的功能。

Description

背光源、背光模组、显示装置及显示系统 技术领域
本发明的实施例涉及一种背光源、背光模组、显示装置及显示系统。
背景技术
目前，随着显示技术与网络技术的发展，越来越多的人在网络上进行购物或者账户交易等操作，在进行上述操作过程中，操作者经常需要在电脑、手机、自动柜员机、自动取票机等显示设备上输入个人信息，从而很容易造成个人信息的泄露。因此，显示设备的防偷窥性越来越受到广泛的关注，以力求保证操作者的个人信息安全。另外，在某些特殊行业则需要特殊的显示装置，尤其机密的信息更需要传给特定的人员，这就需要传递信息的显示设备具有防偷窥性能。因此，如何实现显示设备的防偷窥功能，是本领域技术人员亟待解决的技术问题。
发明内容
本发明实施例提供了一种背光源、背光模组、显示装置及显示系统，用以实现显示设备的防偷窥功能。
本发明实施例提供了一种背光源，包括：显示光源和干扰光源；将一帧时间分为显示时间段和干扰时间段，在显示时间段，所述显示光源提供背光；在干扰时间段，所述干扰光源提供背光。
在一种可能的实施方式中，本发明实施例提供的上述背光源中，所述背光源为发光二极管背光源。在一种可能的实施方式中，该背光源包括第一颜色的发光单元和第二颜色的发光单元，所述第一颜色和所述第二颜色互为互补色。例如，所述发光二极管背光源包括红、青、绿、品、蓝、黄六种颜色的发光单元；其中，所述红、绿、蓝三种颜色的发光单元提供显示光源；所述青、品、黄三种颜色的发光单元提供干扰光源。
本发明实施例提供了一种背光模组，包括：本发明实施例提供的上述背光源，以及用于控制所述背光源提供背光的控制模块；所述控制模块用于控 制所述背光源的显示光源在显示时间段提供背光，控制所述背光源的干扰光源在干扰时间段提供背光。
本发明实施例提供了一种显示装置，包括：用于显示画面的显示面板，以及本发明实施例提供的上述背光模组；其中，在显示时间段，所述背光源中的显示光源为所述显示面板提供背光；在干扰时间段，所述背光源中的干扰光源为所述显示面板提供背光。
在一种可能的实施方式中，本发明实施例提供的上述显示装置中，所述显示面板包括多个第一子像素、多个第二子像素和多个第三子像素，每个子像素对应两个颜色的发光单元，其中一个颜色的发光单元提供显示光源，另一个颜色的发光单元提供干扰光源。
在一种可能的实施方式中，本发明实施例提供的上述显示装置中，所述显示面板上的第一子像素对应红和青两个颜色的发光单元，第二子像素对应绿和品两个颜色的发光单元，第三子像素对应蓝和黄两个颜色的发光单元。
在一种可能的实施方式中，本发明实施例提供的上述显示装置中，所述显示面板在一帧时间内显示的画面为单色画面。
在一种可能的实施方式中，本发明实施例提供的上述显示装置中，所述单色画面为白色画面。
在一种可能的实施方式中，本发明实施例提供的上述显示装置中，一帧时间内所述显示面板在显示时间段和干扰时间段显示的画面亮度相同。
本发明实施例提供了一种显示系统，包括：本发明实施例提供的上述显示装置，以及快门眼镜；其中，在显示时间段，所述显示装置显示正常画面，所述快门眼镜处于透光状态；在干扰时间段，所述显示装置显示干扰画面，所述快门眼镜处于遮光状态。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1A和图1B为本发明实施例提供的背光源的结构示意图；
图2为本发明实施例提供的背光源中各颜色的发光单元与显示面板中各 子像素对应的结构示意图；
图3为本发明实施例提供的显示系统的结构示意图。
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。
除非另作定义，此处使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
本发明实施例提供了一种背光源，可以包括显示光源和干扰光源。将一帧时间分为显示时间段和干扰时间段，在显示时间段，显示光源提供背光；在干扰时间段，干扰光源提供背光。
本发明实施例提供的上述背光源可以应用于防偷窥显示设备，该背光源可以提供显示光源和干扰光源，在一帧时间内，当显示设备处于显示时间段时，背光源提供正常的显示光源，显示设备可以显示正常画面；在干扰时间段，背光源提供干扰光源，显示设备显示干扰画面。因此，若戴上匹配的观看工具例如快门眼镜观看显示设备时，用户可以看到正常的显示画面；然而，用户摘下快门眼镜的情况下观看显示设备时由于人眼的视觉暂留现象，整个显示画面接近于单色画面，因此显示设备失去了传递显示画面的效果，从而达到了防偷窥的目的。
在一个示例，本发明实施例提供的上述背光源中，如图1A所示，例如 背光源为发光二极管，例如无机发光二极管或有机发光二极管背光源，该无机发光二极管或有机发光二极管背光源包括第一颜色的发光单元(即发出第一颜色的光的发光单元)和第二颜色的发光单元，该第一颜色和第二颜色互为互补色。例如，该无机发光二极管或有机发光二极管背光源包括红(R)、青(Q)、绿(G)、品(P)、蓝(B)、黄(Y)六种颜色的发光单元；红(R)、绿(G)、蓝(B)三种颜色的发光单元提供显示光源；青(Q)、品(P)、黄(Y)三种颜色的发光单元提供干扰光源。但是本发明的实施例不限于这些具体颜色的背光源和干扰光源，也不限于如图1A所示的直线排列方式，也可以采用例如三角(Δ)排列方式，例如RBG发光单元构成一个三角，而QPY发光单元构成一个三角，如图1B所示。
在上述示例中，本发明实施例提供的上述背光源可以包括红(R)、青(Q)、绿(G)、品(P)、蓝(B)、黄Y六种颜色的发光单元，分别用于在显示时间段和干扰时间段提供对应的背光，其中，红(R)、绿(G)、蓝(B)三种颜色的发光单元在显示时间段提供显示光源，青(Q)、品(P)、黄(Y)三种颜色的发光单元在干扰时间段提供干扰光源，这样由于显示面板在一帧的显示时间内，正常的显示光源混入了干扰光源，从而在摘掉快门眼镜观看显示设备时，由于人眼的视觉暂留现象，整个显示画面接近于单色画面，显示设备失去了传递正常显示画面信息的效果，从而达到了防偷窥的目的。
基于同一发明构思，本发明实施例还提供了一种背光模组，可以包括：本发明实施例提供的上述背光源，以及用于控制背光源提供背光的控制模块；控制模块用于控制背光源的显示光源在显示时间段提供背光，控制背光源的干扰光源在干扰时间段提供背光。例如，本发明实施例提供的背光模组可以在一帧时间内分别提供显示光源和干扰光源，即在显示时间段提供正常显示光源，在干扰时间段提供干扰光源，从而将该背光模组应用于防偷窥显示设备时，可以达到防偷窥显示的目的。
基于同一发明构思，本发明实施例还提供了一种显示装置，可以包括：用于显示画面的显示面板，以及本发明实施例提供的上述背光模组；在显示时间段，背光源中的显示光源为显示面板提供背光；在干扰时间段，背光源中的干扰光源为显示面板提供背光。
本发明实施例提供的上述显示装置中，在一帧时间内，当显示面板处于显示时间段时，背光源提供正常的显示光源；而显示面板处于干扰时间段时，背光源提供干扰光源，因此，若戴上匹配的观看工具例如快门眼镜观看显示装置时，用户可以看到正常的显示画面；然而，用户摘下快门眼镜的情况下观看显示装置时由于人眼的视觉暂留现象，整个显示画面接近于单色画面，因此显示装置失去了传递显示画面信息的效果，从而达到了防偷窥的目的。
在一个示例中，本发明实施例提供的上述显示装置中，显示面板包括多个第一子像素、多个第二子像素和多个第三子像素，每个子像素对应两个颜色的发光单元，其中一个颜色的发光单元提供显示光源，另一个颜色的发光单元提供干扰光源。
显示面板上一般包括呈矩阵排列的多个像素单元，每个像素单元包括多个子像素，本发明实施例提供的上述显示装置中，显示面板可以包括第一子像素、第二子像素和第三子像素三种子像素，显示面板的每个子像素对应两个颜色的发光单元，其中一个颜色的发光单元为像素提供正常的光源，另一个为像素提供干扰光源。这样在一帧的显示时间内，为显示面板的各子像素提供的背光中正常的显示光源中混入了干扰光源，从而使得显示面板显示的画面接近于单色画面，用户摘掉快门眼镜观看显示面板时，无法观看到正常的显示画面，进而可以实现显示面板的防偷窥显示。
在在一个示例中，本发明实施例提供的上述显示装置中，如图2所示，显示面板上的第一子像素SubR对应红(R)和青(Q)两个颜色的发光单元，第二子像素SubG对应绿(G)和品(P)两个颜色的发光单元，第三子像素SubB对应蓝(B)和黄(Y)两个颜色的发光单元。
本发明实施例提供的上述显示装置中，红色发光单元和青色发光单元作为一组背光源为第一子像素提供背光，这样正常的显示光源由红色发光单元提供，干扰光源由青色发光单元提供，从而在一帧的显示时间内，为第一子像素提供的背光中红色混入了青色，红色与青色为互补色，使得第一子像素整体接近于纯白色；同理绿色发光单元与品色发光单元为一组互补光源，蓝色发光单元与黄色发光单元为一组互补光源，分别为第二子像素和第三子像素提供背光，最终使得显示面板的显示画面接近于白色画面，从而实现显示面板的防偷窥的功能。
本发明实施例提供的上述显示装置中，显示面板在一帧时间内显示的画面为单色画面。本发明实施例提供的上述显示装置中，由于向显示面板提供的背光源中包括显示光源和干扰光源，一帧时间内，显示光源中混入了干扰光源，使得显示面板的各子像素发出接近于单色的光，进而使得显示面板显示的画面整体上接近于单色画面，最终使得显示面板可以实现防偷窥的功能。
本发明实施例提供的上述显示装置中，显示面板显示的单色画面可以为白色画面。通过对背光源的发光单元的颜色进行设置，可以使显示面板显示的画面接近于白色画面，例如红色与青色为互补色，红色中混入青色使得最终的颜色接近于白色，因此可以将红色发光单元和青色发光单元设置为一组提供背光的互补光源，两个颜色的发光单元为同一个子像素提供背光，使得红色中混入青色，进而子像素可以发出白色的光；同理可以设置绿色发光单元与品色发光单元为一组互补光源，蓝色发光单元与黄色发光单元为一组互补光源，最终使得显示面板的显示画面接近于白色画面，从而实现显示面板的防偷窥的功能。当然，本发明的实施例也可以采用其他颜色设置背光源，使得显示面板显示的画面为其他颜色的画面，或者为雪花等失去正常显示信息的画面，在此不作限定。
本发明实施例提供的上述显示装置中，一帧时间内显示面板在显示时间段和干扰时间段显示的画面亮度相同。在显示时间段，背光源为显示面板提供正常的显示光源，在干扰时间段，背光源为显示面板提供干扰光源，这样在一帧时间内，各发光单元对应的为显示面板上各子像素提供显示光源和干扰光源，同时要保证在显示时间段与干扰时间段显示面板显示的画面亮度相同，从而有利于互补色混合后接近于纯白色。例如红色发光单元和青色发光单元作为一组互补光源为子像素提供背光，在一帧时间内，显示时间段红色发光单元为显示面板提供背光，在干扰时间段，青色发光单元为显示面板提供背光，显示面板一帧时间内显示的画面亮度相同，即显示时间段的红光与干扰时间段的青光在显示画面上的表现亮度一致，这样使得混合后的光为纯白光，而不是偏向于红光或青光，最终使得显示面板的显示画面为失去显示信息的白色画面。
基于同一发明构思，本发明实施例提供了一种显示系统，如图3所示，该显示系统可以包括：本发明实施例提供的上述显示装置(该显示装置包括 背光源01和显示面板02)，以及快门眼镜03；在显示时间段，显示装置显示正常画面，快门眼镜03处于透光状态；在干扰时间段，显示装置显示干扰画面，快门眼镜03处于遮光状态。
本发明实施例提供的上述显示系统，将一帧时间分为显示时间段和干扰时间段，如图3所示，在显示时间段，背光源01中的显示光源为显示面板02提供背光，快门眼镜03处于透光状态；在干扰时间段，背光源01中的干扰光源为显示面板02提供背光，快门眼镜03处于遮光状态。具体地，本发明实施例提供的显示系统中背光源可以提供显示光源和干扰光源，这样通过背光源与快门眼镜的配合，在一帧时间内，当显示面板处于显示时间段时，背光源提供正常的显示光源，快门眼镜左右眼同时处于透光状态；而显示面板处于干扰时间段时，背光源提供干扰光源，此时快门眼镜左右眼同时处于遮光状态，因此戴上快门眼镜观看显示面板时可以看到正常的显示画面，摘下快门眼镜观看显示面板时由于人眼的视觉暂留现象，整个显示画面接近于单色画面，显示面板失去了传递显示画面的效果，从而达到了防偷窥的目的。
本发明实施例提供的上述显示系统中，显示面板可以为液晶显示面板，液晶显示面板包括：用于驱动液晶显示面板进行显示的阵列基板、与阵列基板相对置以形成液晶盒的对置基板以及设置与所述液晶盒中的液晶层。由于本发明实施例提供的上述显示系统中的背光源为彩色背光源，因此阵列基板或对置基板可以无需再设置彩色滤光器。
本发明的另一个实施例提供的上述显示系统中，显示面板可以为液晶显示面板，液晶显示面板包括：用于驱动液晶显示面板进行显示的阵列基板，用于对背光源发出的光进行滤光的彩膜基板，以及设置在阵列基板和彩膜基板之间的液晶；彩膜基板为无彩膜的彩膜基板。本发明实施例提供的上述显示系统中，显示面板为液晶显示面板，液晶显示面板包括用于驱动液晶显示面板进行显示的阵列基板，以及用于对背光源发出的光进行滤光的彩膜基板，阵列基板与彩膜基板之间为液晶层，由于本发明实施例提供的上述显示系统中的背光源为彩色背光源，因此彩膜基板为无彩膜的彩膜基板，彩膜基板可以将背光源发出的光进行滤光后用于液晶显示面板进行画面显示。
本发明实施例提供了一种背光源、背光模组、显示装置及显示系统，该背光源包括：显示光源和干扰光源；将一帧时间分为显示时间段和干扰时间 段，在显示时间段，显示光源提供背光；在干扰时间段，干扰光源提供背光。具体地，本发明实施例提供的背光源可以应用于防偷窥显示设备，该背光源可以提供显示光源和干扰光源，在一帧时间内，当显示设备处于显示时间段时，背光源提供正常的显示光源，显示设备可以显示正常画面；在干扰时间段，背光源提供干扰光源，显示设备显示干扰画面。因此，若戴上匹配的观看工具例如快门眼镜观看显示设备时，用户可以看到正常的显示画面，然而，用户摘下快门眼镜的情况下观看显示设备时由于人眼的视觉暂留现象，整个显示画面接近于单色画面，显示设备失去了传递显示画面的效果，从而达到了防偷窥的目的。
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。
本申请要求于2016年1月20日递交的中国专利申请第201610037475.7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 (12)

  1. 一种背光源，用于显示装置，包括：显示光源和干扰光源；
    其中，将一帧时间分为显示时间段和干扰时间段，在显示时间段，所述显示光源提供背光；在干扰时间段，所述干扰光源提供背光。
  2. 如权利要求1所述的背光源，其中，所述背光源为发光二极管背光源。
  3. 如权利要求2所述的背光源，其中，所述背光源包括第一颜色的发光单元和第二颜色的发光单元，所述第一颜色和所述第二颜色互为互补色。
  4. 如权利要求2所述的背光源，其中，所述发光二极管背光源包括红、青、绿、品、蓝、黄六种颜色的发光单元；其中，
    所述红、绿、蓝三种颜色的发光单元提供显示光源；
    所述青、品、黄三种颜色的发光单元提供干扰光源。
  5. 一种背光模组，包括：如权利要求1所述的背光源，以及用于控制所述背光源提供背光的控制模块；
    所述控制模块用于控制所述背光源的显示光源在显示时间段提供背光，控制所述背光源的干扰光源在干扰时间段提供背光。
  6. 一种显示装置，包括：用于显示画面的显示面板，以及如权利要求5所述的背光模组；其中，
    在显示时间段，所述背光源中的显示光源为所述显示面板提供背光；在干扰时间段，所述背光源中的干扰光源为所述显示面板提供背光。
  7. 如权利要求6所述的显示装置，其中，所述显示面板包括多个第一子像素、多个第二子像素和多个第三子像素，每个子像素对应两种颜色的发光单元，其中一种颜色的发光单元提供显示光源，另一种颜色的发光单元提供干扰光源。
  8. 如权利要求7所述的显示装置，其中，所述显示面板上的第一子像素对应红和青两个颜色的发光单元，第二子像素对应绿和品两个颜色的发光单元，第三子像素对应蓝和黄两个颜色的发光单元。
  9. 如权利要求6-8任一项所述的显示装置，其中，所述显示面板在一帧时间内显示的画面为单色画面。
  10. 如权利要求9所述的显示装置，其中，所述单色画面为白色画面。
  11. 如权利要求6所述的显示装置，其中，一帧时间内所述显示面板在显示时间段和干扰时间段显示的画面亮度相同。
  12. 一种显示系统，包括：如权利要求6-11任一项所述的显示装置，以及快门眼镜；其中，
    在显示时间段，所述显示装置显示正常画面，所述快门眼镜处于透光状态；在干扰时间段，所述显示装置显示干扰画面，所述快门眼镜处于遮光状态。
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