WO2019206035A1 - 防窥结构、显示装置及显示方法 - Google Patents
防窥结构、显示装置及显示方法 Download PDFInfo
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- WO2019206035A1 WO2019206035A1 PCT/CN2019/083428 CN2019083428W WO2019206035A1 WO 2019206035 A1 WO2019206035 A1 WO 2019206035A1 CN 2019083428 W CN2019083428 W CN 2019083428W WO 2019206035 A1 WO2019206035 A1 WO 2019206035A1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133377—Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/44—Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
Definitions
- the present disclosure relates to the field of display technology, and in particular to a peep prevention structure, a display device, and a display method.
- display devices such as mobile phones and computers have become more and more widely used.
- the display device has a large viewing angle, and users located at different viewing angles can know the information displayed by the user.
- the user desires that the information displayed by the display device is not known to other users around, that is, the display device is expected to have an anti-spy function.
- Embodiments of the present disclosure provide a peep prevention structure, a display device, and a display method.
- the present disclosure provides an anti-spy structure.
- the anti-spy structure includes: a first electrode and a second electrode disposed opposite to each other; a plurality of transparent columnar cavities between the first electrode and the second electrode, defined between the plurality of transparent columnar cavities a plurality of open regions, each of the plurality of transparent cylindrical cavities being filled with charged light absorbing particles; wherein the charged light is absorbed by an electric field between the first electrode and the second electrode
- the particles can be uniformly diffused within the transparent cylindrical cavity or concentrated at one end of the transparent cylindrical cavity.
- the anti-spy structure further includes a first substrate and a second substrate disposed opposite to each other; the first electrode is located on a side of the first substrate facing the second substrate; the second electrode is located at the The second substrate faces one side of the first substrate.
- the first electrode is a planar transparent electrode or a metal conductive trace
- the second electrode is a planar transparent electrode or a metal conductive trace.
- an orthographic projection of the transparent cylindrical cavity near the end of the first substrate on the first substrate covers the first electrode;
- an orthographic projection of the transparent columnar cavity near the end of the second substrate on the second substrate covers the second electrode.
- the charged light absorbing particles are concentrated at one end of the transparent columnar cavity; at the first electrode and the second electrode When no electric field is applied between, the charged light absorbing particles are uniformly diffused in the transparent columnar cavity.
- a shape of a cross section of each of the transparent columnar cavities along a plane perpendicular to the first electrode or the second electrode is a rectangle or a trapezoid.
- the present disclosure provides a display device.
- the display device includes a display panel and a privacy preventing structure as described in the first aspect attached to the light emitting side of the display panel, wherein each of the plurality of opening regions of the privacy preventing structure corresponds to the display At least one pixel area of the panel.
- the display device when the display device includes the first substrate and the second substrate disposed opposite to each other, the first substrate or the second substrate of the anti-spy structure is multiplexed by the substrate on the light-emitting side of the display panel.
- the plurality of open areas of the anti-spy structure are in one-to-one correspondence with the plurality of pixel areas of the display panel, and the orthographic projection of each of the plurality of open areas on the display panel is One of the plurality of pixel regions coincides.
- the display device further includes a controller for controlling an electrical signal applied to the first electrode and the second electrode, such that by controlling the electrical signal, controlling An intensity of an electric field between an electrode and the second electrode to enable the anti-spy structure to switch between a first state and a second state, wherein the charged light absorbing particles are uniformly diffused in the first state In the transparent cylindrical cavity; in the second state, the charged light absorbing particles are concentrated at one end of the transparent cylindrical cavity.
- a projection of each of the plurality of transparent cylindrical cavities on the display panel is located within a black matrix in the display panel.
- the present disclosure provides a display method of a display device.
- the method is applied to the display device of the first aspect, the method comprising: controlling an electrical signal applied to the first electrode and the second electrode such that by controlling the electrical signal, controlling An intensity of an electric field between the first electrode and the second electrode to enable the anti-spy structure to be switched between a first state and a second state, wherein the charged light absorbing particles are uniform in the first state Dispersing in the transparent cylindrical cavity; in the second state, the charged light absorbing particles are concentrated at one end of the transparent cylindrical cavity.
- the display method further includes not applying an electrical signal to the first electrode and the second electrode such that the charged light absorbing particles are uniformly diffused in the transparent cylindrical cavity;
- the second electrode applies an electrical signal such that the charged light absorbing particles are adjacent to the first electrode or the second electrode and are concentrated at one end of the transparent cylindrical cavity.
- the present disclosure provides a method of fabricating a peep prevention structure.
- the method includes: providing a first substrate, depositing a transparent conductive material as a first electrode on the first substrate; forming a transparent insulating film on the first electrode; and patterning the transparent insulating film to form a plurality of a transparent columnar cavity; each of the plurality of transparent cylindrical cavities is filled with charged light absorbing particles; a second substrate is provided, a second electrode is formed on the second substrate; the first electrode and the first electrode are The second electrode performs a pair of boxes such that the second electrode faces the first electrode and the second electrode is in direct contact with the transparent insulating film.
- filling each of the plurality of transparent cylindrical cavities with charged light absorbing particles comprises: filling a liquid in the transparent cylindrical cavity, and filling the liquid with charged light absorbing particles, wherein The concentration of the charged light absorbing particles allows the charged light absorbing particles to uniformly diffuse the entirety of the transparent cylindrical cavity and form a retaining wall that blocks light.
- a shape of a cross section of each of the transparent columnar cavities along a plane perpendicular to the first electrode or the second electrode is rectangular or trapezoidal.
- FIG. 1 is a schematic diagram of the principle of the display device of the present disclosure in a peep prevention state
- FIG. 2 is a schematic diagram of the principle of the display device of the present disclosure in a non-peep-proof state
- 3A is a schematic structural view 1 of a display device with a peep prevention structure of the present disclosure
- 3B is another schematic view of the structure of the display device with the anti-spy structure of the present disclosure.
- FIG. 4 is another schematic view showing the structure of a display device having a peep prevention structure
- FIG. 5 and FIG. 6 are schematic diagrams of the principle of switching between the anti-spy state and the non-peep-proof state according to the present disclosure
- FIG. 7 is a second schematic structural view of a display device with a peep prevention structure according to the present disclosure.
- the present disclosure provides a peep prevention structure, a display device having the anti-spy structure, and a display method thereof.
- the anti-spy structure, the display device having the anti-spy structure, and the display method thereof can realize switching between the anti-spy state and the non-peep-proof state of the display device, and can reduce the manufacturing process difficulty and enhance the anti-peep effect.
- FIG. 1 is a schematic diagram of the principle of the display device of the present disclosure in a peep prevention state.
- a stereoscopic viewing angle restriction area A-A' may be formed in an area above the display side of the display panel, thereby preventing users other than the viewing angle limitation area A-A'. See what is displayed on the display panel.
- FIG. 2 is a schematic diagram of the principle of the display device of the present disclosure under normal display.
- the normal display i.e., in the non-anti-peep state
- the anti-spy structure can be used for a display panel of a display device, such as a liquid crystal display panel or an OLED display panel.
- the anti-spy structure may include: a first electrode and a second electrode disposed opposite to each other; a plurality of transparent columnar cavities between the first electrode and the second electrode, the plurality of transparent column cavities defining a plurality of open regions, the transparent cylindrical cavity being filled with a liquid and charged light absorbing particles located in the liquid, a longitudinal section of the transparent cylindrical cavity (ie, a section along a plane perpendicular to the first electrode or the second electrode) Is a trapezoid or a rectangle; an electric field is disposed between the first electrode and the second electrode, and the anti-spy structure is switchable between the first state and the second state under the action of an electric field, In the first state, the charged light absorbing particles are uniformly diffused in the transparent columnar cavity; in the second state, the charged light
- the anti-spy structure is switchable between the first state and the second state under the electric field between the first electrode and the second electrode, and in the first state, the charged light absorbing particles are uniformly diffused in the transparent columnar cavity
- a blocking wall for blocking light is formed, so that the light emitted by the pixels of the display device can only be emitted through the opening area between the plurality of transparent cylindrical cavities, thereby realizing the viewing angle limitation, thereby realizing the anti-spy display.
- the display device switches between the anti-spy state and the non-peep state.
- the manufacturing process is simpler and the anti-spying effect is further improved.
- the anti-spy structure further includes a first substrate and a second substrate disposed opposite to each other; the first electrode is located on a side of the first substrate facing the second substrate; and the second electrode is located in the first The two substrates face one side of the first substrate.
- the first electrode may be a planar transparent electrode or a metal conductive trace; and the second electrode may be a planar transparent electrode or a metal conductive trace.
- the first electrode and the second electrode may be made of metal conductive traces, and the positive projection of the electrode on the side of the display panel on the display panel Into the black matrix of the display panel, the effect of the first electrode and the second electrode on the light emitted from the display panel can be reduced.
- the first electrode is a metal conductive trace
- an orthographic projection of the transparent columnar cavity near the end of the first substrate on the first substrate covers the first electrode, such that In the normal display, the shielding of the light by the metal conductive traces can be minimized
- the second electrode is a metal conductive trace
- the transparent columnar cavity is adjacent to the end of the second substrate on the second substrate
- the upper orthographic projection covers the second electrode, so that in the normal display, the shielding of the light by the metal conductive trace can be minimized.
- the display device having the anti-spy structure includes a display panel 1, a first substrate 3 on the display panel 1, a first electrode 4 on the first substrate 3, and a plurality of transparent layers on the first electrode 4. a columnar cavity 7, a second electrode 5 on the plurality of transparent columnar cavities 7, and a second substrate 6 on the second electrode 5, wherein the plurality of transparent columnar cavities 7 define a plurality of open regions B, a plurality of The longitudinal section of the transparent columnar cavity 7 is rectangular, and the plurality of opening areas B are in one-to-one correspondence with the plurality of pixels 2 of the display panel 1.
- the transparent columnar cavity 7 is filled with a liquid, and the light absorbing particles 8 are charged in the liquid, and the charged light absorbing particles are charged.
- the concentration of 8 is controlled so that the entire transparent columnar cavity 7 can be uniformly diffused, and a retaining wall 9 that blocks light is formed.
- the present disclosure provides a method of fabricating a peep prevention structure.
- the method for manufacturing the anti-spy structure can produce the anti-spy structure shown in FIG. 3A.
- the method includes the steps of: providing a first substrate 3 on the display panel 1; depositing a transparent conductive material on the first substrate 3 as the first electrode 4; forming a transparent insulating film having a thickness H on the first electrode 4, A plurality of transparent columnar cavities 7 are formed by patterning the transparent insulating film, and a plurality of opening regions B are defined between the plurality of transparent columnar cavities 7, and the plurality of opening regions B are in one-to-one correspondence with the plurality of pixels 2 of the display panel 1;
- the transparent columnar cavity 7 is filled with charged light absorbing particles 8, and the concentration of the charged light absorbing particles 8 is controlled to uniformly diffuse the entire transparent columnar cavity 7 and form a barrier wall 9 for blocking light; and the second substrate 6 is provided on the second substrate 6 Forming a second electrode 5 thereon, the second electrode
- the display panel 1 may be a liquid crystal display panel or an OLED display panel.
- the charged light absorbing particles 8 of the present disclosure may be any charged light absorbing particles capable of implementing the principles of the present disclosure.
- the liquid in the transparent cylindrical cavity 7 of the present disclosure may be any liquid capable of suspending the charged light absorbing particles 8. Specific examples of the charged light absorbing particles 8 and the liquid can be selected by those skilled in the art as needed.
- FIG. 3B is another schematic view of the structure of the display device with the anti-spy structure of the present disclosure.
- the structure shown in FIG. 3B is mostly the same as the structure shown in FIG. 3A, except that the first substrate 3 is not provided in FIG. 3B and is multiplexed into the first substrate 3 by the display panel. Since the display panel is multiplexed into the first substrate 3, the structure of the display device having the anti-spy structure is simplified, and the manufacturing process is simplified.
- the first electrode and the second electrode are shown as transparent planar electrodes in FIG. 3B, in practical applications, the first electrode and the second electrode in the structure of FIG. 3B may also be metal conductive traces. Examples of structures of metal conductive traces may be obtained from other embodiments of the present disclosure, and thus the present disclosure is not described in detail.
- Fig. 4 shows still another schematic view of the structure of a display device having a peep prevention structure.
- the first electrode and the second electrode may be metal conductive traces.
- the influence of the first electrode and the second electrode on the light emitted from the display panel is reduced due to the provision of the metal conductive traces.
- the orthographic projection of the first electrode on the display panel falls within the black matrix BM on the display panel, which can reduce the influence of the first electrode and the second electrode on the light emitted by the display panel.
- an orthographic projection of the transparent cylindrical cavity near the end of the first substrate on the first substrate covers the first electrode;
- an orthographic projection of the transparent columnar cavity near the end of the second substrate on the second substrate covers the second electrode, so that during normal display, It can minimize the obstruction of light by metal conductive traces.
- FIG. 5 and 6 are schematic views showing the structure of a display device having a peep prevention structure of the present disclosure.
- the structure of the display device shown in Figs. 5 and 6 is similar to that of the display device shown in Fig. 3A, except that the longitudinal section of the transparent cylindrical cavity 7 of Figs. 5 and 6 is trapezoidal.
- the present disclosure provides a method of fabricating a peep prevention structure.
- the method for manufacturing the anti-spy structure can produce the anti-spy structure shown in FIG. 5.
- the method includes the following steps: Specifically, the manufacturing method of the anti-spy structure includes the following steps: providing a first substrate 3, depositing a transparent conductive material on the first substrate 3 as the first electrode 4; at the first electrode 4 A transparent insulating film having a thickness H is formed thereon, and a plurality of transparent columnar cavities 7 are formed by patterning the transparent insulating film.
- the longitudinal sections of the plurality of transparent columnar cavities 7 are trapezoidal, and a plurality of openings are defined between the transparent columnar cavities 7.
- the opening region is in one-to-one correspondence with the pixel 2 of the display panel 1, and the transparent columnar cavity 7 is filled with a liquid and a charged light absorbing particle 8 located in the liquid, and the concentration of the charged light absorbing particles 8 is controlled to uniformly diffuse the entire cavity, and Forming a retaining wall for blocking light; providing a second substrate 6, forming a second electrode 5 on the second substrate 6, and the second electrode 5 may be made of a transparent conductive material such as ITO, and performing the first electrode 4 and the second electrode 5 With the box, you can get the anti-spy structure.
- the exposure is from top to bottom, and the amount of exposure received above is larger than the following, so the material removed by the above exposure is relatively large, and the transparent columnar cavity 7 having a trapezoidal longitudinal section is formed, which greatly reduces the processing difficulty.
- the anti-spy structure as shown in FIGS. 5 and 6 can be produced.
- the first electrode 4 and the second electrode 5 are energized such that the charged light-absorbing particles 8 are concentrated on one of the substrate sides, optionally, concentrated.
- the black matrix BM is provided on the display panel, the orthographic projection of the charged light-absorbing particles 8 on the display panel 1 falls into the black matrix BM, and the influence on the display is small.
- the display panel 1 may be a liquid crystal display panel or an OLED display panel.
- the first electrode and the second electrode may be metal conductive traces.
- the influence of the first electrode and the second electrode on the light emitted from the display panel is reduced due to the provision of the metal conductive traces.
- an orthographic projection of the transparent cylindrical cavity near the end of the first substrate on the first substrate covers the first electrode;
- an orthographic projection of the transparent columnar cavity near the end of the second substrate on the second substrate covers the second electrode, so that during normal display, It can minimize the obstruction of light by metal conductive traces.
- FIG. 7 is a schematic structural view of a display device having a privacy preventing structure of the present disclosure.
- the structure shown in FIG. 7 is mostly the same as the structure shown in FIG. 5, except that the first substrate 3 is not provided in FIG. 7, and is multiplexed into the first substrate 3 by the display panel. Since the display panel is multiplexed into the first substrate 3, the structure of the display device having the anti-spy structure is simplified, and the manufacturing process is simplified.
- the first electrode and the second electrode are shown as transparent planar electrodes in FIG. 7, in practical applications, the first electrode and the second electrode in the structure of FIG. 7 may also be metal conductive traces. Examples of structures of metal conductive traces may be obtained from other embodiments of the present disclosure, and thus the present disclosure is not described in detail.
- the anti-spying effect can also be improved by the anti-spy structure of the present disclosure.
- H is 110um
- h 10um
- L 40um
- a 10um
- the corresponding anti-peep angle is raised to about 10 degrees.
- the height of the transparent columnar cavity 7 can be lowered, thereby reducing the thickness H of the anti-spy structure.
- the display device includes a display panel and a peep prevention structure as described above attached to the light exiting side of the display panel, and each open area of the anti-spy structure corresponds to at least one pixel area of the display panel.
- the display device may be any product or component having a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board, and a backboard.
- the anti-spy structure is switchable between the first state and the second state under the action of an electric field between the first electrode and the second electrode.
- the charged light absorbing particles are uniformly diffused in the transparent columnar cavity to form a retaining wall that blocks the light, so that the light emitted by the pixels of the display device can only be emitted through the open area to realize the anti-spy display.
- the display device switches between the anti-spy state and the non-peep state. In the example in which the longitudinal section of the transparent columnar cavity is trapezoidal, the difficulty of the manufacturing process can be reduced, and the anti-spying effect can be further improved.
- the first substrate or the second substrate of the anti-spy structure multiplexes the substrate on the light-emitting side of the display panel, thereby reducing the thickness of the display device as much as possible.
- the open area of the anti-spy structure is in one-to-one correspondence with the pixel area of the display panel, and the orthographic projection of the open area on the display panel coincides with the corresponding pixel area.
- the display device further includes a controller CON for controlling electrical signals applied to the first electrode and the second electrode such that the first electrode and the first
- the anti-spy structure is switchable between a first state and a second state under the action of an electric field between the two electrodes; in the first state, the charged light absorbing particles are uniformly diffused in the transparent cylindrical cavity; In the second state, the charged light absorbing particles are concentrated at one end of the transparent columnar cavity.
- the anti-spy structure includes a first substrate 3 and a second substrate 6 disposed opposite to each other, and a first electrode 4 is disposed on a side of the first substrate 3 facing the second substrate 6, in the first A second electrode 5 is disposed on a side of the second substrate 6 facing the first substrate 3, and a transparent columnar cavity 7 is disposed between the first electrode 4 and the second electrode 5.
- the longitudinal columnar cavity 7 has a trapezoidal longitudinal section, and the transparent columnar cavity 7 is filled with a liquid and charged absorptive particles 8 in the liquid.
- the first electrode 4 and the second electrode 5 are not energized, and the charged light absorbing particles 8 uniformly diffuse the entire cavity, so that the light emitted by the pixel 2 can only pass.
- An open area surrounded by the transparent cylindrical cavity 7 is emitted. The higher the transparent columnar cavity 7, the smaller the viewing angle, the better the anti-spying effect; when in the non-anti-seepage state, as shown in FIG.
- the first electrode 4 and the second electrode 5 are energized to electrify
- the light absorbing particles 8 are concentrated on one side of one of the substrates, optionally concentrated on the side of the first substrate 3 adjacent to the display panel, because the black matrix is disposed on the display panel, and the positive projection of the charged light absorbing particles 8 on the display panel falls. Into the black matrix, the impact on the display is small.
- the display panel may be a liquid crystal display panel or an OLED display panel.
- the anti-spying effect can also be improved by the anti-spy structure of the present disclosure.
- the anti-peep angle ⁇ actan((H+h)/(La))
- H is 110um
- h 10um
- L 40um
- a 10um
- the corresponding anti-peep angle is raised to about 10 degrees.
- the height of the transparent columnar cavity 7 can be lowered, thereby reducing the thickness H of the anti-spy structure.
- Some embodiments of the present disclosure also provide a display method of a display device, as applied to the display device as described above, comprising: controlling an electrical signal applied to the first electrode and the second electrode such that The anti-spy structure is switchable between a first state and a second state under the action of an electric field between the first electrode and the second electrode, wherein in the first state, the charged light absorbing particles Uniformly diffusing in the transparent cylindrical cavity; in the second state, the charged light absorbing particles are concentrated at one end of the transparent cylindrical cavity.
- the anti-spy structure can be switched between the first state and the second state under the electric field between the first electrode and the second electrode, and in the first state, the charged light absorbing particles are uniformly diffused in the transparent columnar cavity.
- a blocking wall for blocking light is formed, so that the light emitted by the pixel of the display device can only be emitted through the opening area to realize the anti-peep display, the higher the transparent columnar cavity, the smaller the viewing angle, the better the anti-spying effect;
- the charged light absorbing particles are concentrated at one end of the transparent columnar cavity to achieve normal display.
- switching between the anti-spy state and the non-peep-proof state of the display device can be achieved.
- the longitudinal section of the transparent columnar cavity is trapezoidal, the difficulty of the manufacturing process can be reduced, and the anti-spying effect can be further improved.
- the method specifically includes: no electrical signal is applied to the first electrode and the second electrode, such that the charged light absorbing particles are uniformly diffused in the transparent cylindrical cavity; or the first electrode and The second electrode applies an electrical signal such that the charged light absorbing particles are adjacent to the first electrode or the second electrode and are concentrated at one end of the transparent cylindrical cavity.
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Abstract
Description
Claims (16)
- 一种防窥结构,包括:相对设置的第一电极和第二电极;位于所述第一电极和所述第二电极之间的多个透明柱状腔体,所述多个透明柱状腔体之间限定出多个开口区域,所述多个透明柱状腔体中的每个内填充有带电吸光颗粒;其中,在所述第一电极和所述第二电极之间的电场作用下,所述带电吸光颗粒能够均匀扩散在所述透明柱状腔体内或者集中在所述透明柱状腔体的一端。
- 根据权利要求1所述的防窥结构,还包括:相对设置的第一基板和第二基板;所述第一电极位于所述第一基板朝向所述第二基板的一面;所述第二电极位于所述第二基板朝向所述第一基板的一面。
- 根据权利要求1或2所述的防窥结构,其中,所述第一电极为面状透明电极或金属导电走线;所述第二电极为面状透明电极或金属导电走线。
- 根据权利要求3所述的防窥结构,其中,在所述第一电极为金属导电走线时,所述透明柱状腔体靠近所述第一基板的端部在所述第一基板上的正投影覆盖所述第一电极;在所述第二电极为金属导电走线时,所述透明柱状腔体靠近所述第二基板的端部在所述第二基板上的正投影覆盖所述第二电极。
- 根据权利要求1至4中任一项所述的防窥结构,其中,在所述第一电极和所述第二电极之间施加电场时,所述带电吸光颗粒集中在所述透明柱状腔体的一端;在所述第一电极和所述第二电极之间未施加电场时,所述带电吸光颗粒均匀扩散在所述透明柱状腔体内。
- 根据权利要求1至5中任一项所述的防窥结构,其中,每个所述透明柱状腔体沿与所述第一电极或所述第二电极垂直的平面的截面的形状是矩形 或梯形。
- 一种显示装置,包括:显示面板;和贴附在所述显示面板出光侧的如权利要求1-6中任一项所述的防窥结构,其中,所述防窥结构的多个开口区域中的每一开口区域对应所述显示面板的至少一个像素区域。
- 根据权利要求7所述的显示装置,其中,在所述显示装置包括如权利要求2所述的防窥结构时,所述防窥结构的第一基板或第二基板由所述显示面板出光侧的衬底基板复用。
- 根据权利要求7所述的显示装置,其中,所述防窥结构的多个开口区域与所述显示面板的多个像素区域一一对应,所述多个开口区域中的每个在所述显示面板上的正投影与所述多个像素区域中的一个重合。
- 根据权利要求7所述的显示装置,还包括:控制器,用于控制施加在所述第一电极和所述第二电极上的电信号,使得通过控制所述电信号,控制在所述第一电极和所述第二电极之间的电场的强度,以使所述防窥结构能够在第一状态和第二状态之间切换,在所述第一状态下,所述带电吸光颗粒均匀扩散在所述透明柱状腔体内;在所述第二状态下,所述带电吸光颗粒集中在所述透明柱状腔体的一端。
- 根据权利要求7至10中任一项所述的显示装置,其中,所述多个透明柱状腔体中的每个在所述显示面板上的投影位于所述显示面板中的黑矩阵内。
- 一种显示装置的显示方法,应用于如权利要求7-11中任一项所述的显示装置,所述方法包括:控制施加在所述第一电极和所述第二电极上的电信号,使得通过控制所述电信号,控制在所述第一电极和所述第二电极之间的电场的强度,以使所述防窥结构能够在第一状态和第二状态之间切换,在所述第一状态下,所述带电吸光颗粒均匀扩散在所述透明柱状腔体内;在所述第二状态下,所述带电吸光颗粒集中在所述透明柱状腔体的一端。
- 根据权利要求12所述的显示方法,进一步包括:对所述第一电极和所述第二电极不施加电信号,使得所述带电吸光颗粒均匀扩散在所述透明柱状腔体内;对所述第一电极和所述第二电极施加电信号,使得所述带电吸光颗粒向所述第一电极或所述第二电极靠近,集中在所述透明柱状腔体的一端。
- 一种防窥结构的制作方法,包括:提供第一基板,在所述第一基板上沉积一层透明导电材料作为第一电极;在所述第一电极上形成透明绝缘膜,并对所述透明绝缘膜构图形成多个透明柱状腔体;在所述多个透明柱状腔体中的每个内填充带电吸光颗粒;提供第二基板,在所述第二基板上形成第二电极;将所述第一电极和所述第二电极进行对盒,使得所述第二电极面向所述第一电极并且所述第二电极与所述透明绝缘膜直接接触。
- 根据权利要求14所述的防窥结构的制作方法,其中,在所述多个透明柱状腔体中的每个内填充带电吸光颗粒,包括:在所述透明柱状腔体中填充液体,并且在所述液体中填充带电吸光颗粒,其中所述带电吸光颗粒的浓度使得所述带电吸光颗粒可以均匀扩散所述透明柱状腔体的整体并且形成遮挡光线的挡墙。
- 根据权利要求14或15所述的防窥结构的制作方法,其中,所述透明柱状腔体中的每个透明柱状腔体沿与所述第一电极或所述第二电极垂直的平面的截面的形状是矩形或梯形。
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