CN210534493U - Display device - Google Patents
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- CN210534493U CN210534493U CN201921955228.0U CN201921955228U CN210534493U CN 210534493 U CN210534493 U CN 210534493U CN 201921955228 U CN201921955228 U CN 201921955228U CN 210534493 U CN210534493 U CN 210534493U
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Abstract
The utility model discloses a display device. The display device includes: the display device comprises a display panel, a backlight module, an electrolyte box and a liquid crystal dimming box; the electrolyte box is arranged on one side of the light-emitting surface of the backlight module; the display panel is positioned on one side of the electrolyte box, which is far away from the backlight module; the liquid crystal dimming box is positioned on one side of the display panel, which is far away from the electrolyte box, and the light emergent side of the display panel faces the liquid crystal dimming box; a plurality of first electrodes and a plurality of second electrodes are arranged in the electrolyte box; after the electrolyte box is electrified, a light blocking layer is formed on the first electrode or the second electrode to block partial light rays at a visual angle; the display panel comprises a plurality of pixel display areas arranged in an array manner and a black matrix shading area positioned between the pixel display areas; the liquid crystal dimming box comprises a plurality of liquid crystal dimming units; the liquid crystal dimming unit is positioned in the black matrix shading area. In the embodiment of the utility model provides an in, realize that display device wide and narrow visual angle switches to show through setting up electrolyte box and liquid crystal box of adjusting luminance.
Description
Technical Field
The utility model relates to a liquid crystal display technology field especially relates to a display device.
Background
The liquid crystal display device has the advantages of good picture quality, small volume, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and is dominant in the field of flat panel display. With the continuous progress of the liquid crystal display technology, people want to effectively protect business confidentiality and personal privacy while enjoying visual experience brought by a large visual angle, so as to avoid business loss or embarrassment caused by the leakage of screen information.
In the prior art, a method for switching between a wide viewing angle and a narrow viewing angle of a display device mainly comprises the steps of attaching a shutter shielding film on a display screen, arranging a dual-light-source backlight system in the liquid crystal display device, and applying a vertical electric field to liquid crystal molecules by using a viewing angle control electrode on one side of a color filter substrate (CF). The method is characterized in that a louver shielding film is attached to a display screen, so that great inconvenience is brought to a user, one louver shielding film can only realize one visual angle, once the louver shielding film is attached, the visual angle is fixed, only a narrow visual angle mode can be realized, and the function of displaying a wide visual angle cannot be realized; the arrangement of a dual light source backlight system in a liquid crystal display device leads to an increase in both the thickness and the cost of the liquid crystal display device; the control electrode added at the CF side has a single visual angle, and is higher in voltage and higher in power consumption.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a display device to realize that wide and narrow visual angle switches the demonstration.
An embodiment of the utility model provides a display device, include: the display device comprises a display panel, a backlight module, an electrolyte box and a liquid crystal dimming box;
the electrolyte box is arranged on one side of the light emitting surface of the backlight module; the display panel is positioned on one side of the electrolyte box, which is far away from the backlight module; the liquid crystal dimming box is positioned on one side of the display panel, which is far away from the electrolyte box, and the light emitting side of the display panel faces the liquid crystal dimming box;
a plurality of first electrodes and a plurality of second electrodes are arranged in the electrolyte box; after the electrolyte box is powered on, a light blocking layer is formed on the first electrode or the second electrode to block partial visual angle light rays emitted by the backlight module;
the display panel comprises a plurality of pixel display areas arranged in an array mode and a black matrix shading area located between the pixel display areas; the liquid crystal dimming box comprises a plurality of liquid crystal dimming units; the liquid crystal dimming unit is positioned in the black matrix shading area;
the liquid crystal dimming box is powered on, and the liquid crystal dimming unit is in a transparent state; the liquid crystal dimming box is not powered up, and the liquid crystal dimming unit is in a fog state.
Preferably, the electrolyte cartridge comprises a first transparent substrate and a second transparent substrate, and an electrolyte solution located between the first transparent substrate and the second transparent substrate;
the plurality of first electrodes are positioned on one side of the first transparent substrate facing the second transparent substrate; the second electrodes are positioned on one side of the second transparent substrate facing the first substrate;
the first electrodes correspond to the second electrodes one to one; the first electrodes and the second electrodes which are in one-to-one correspondence are opposite to each other in the direction perpendicular to the plane of the display panel.
Preferably, the area where the first electrode and the second electrode are located is located in the black matrix shading area.
Preferably, the electrolyte box comprises a plurality of transparent support plates and electrolyte, the transparent support plates are arranged at intervals, the electrolyte is arranged between the transparent support plates, and the first electrode and the second electrode are respectively arranged on two side surfaces of the transparent support plates; the plane of the transparent support plate is perpendicular to the plane of the display panel.
Preferably, the transparent support plate is located in the black matrix light-shielding region.
Preferably, the vertical projections of the plurality of first electrodes and the plurality of second electrodes on the plane of the display panel are parallel along the array row direction and are sequentially arranged along the array column direction;
or;
the vertical projections of the first electrodes and the second electrodes on the plane of the display panel are parallel along the array column direction and are sequentially arranged along the array row direction.
Preferably, a vertical projection of the plurality of first electrodes and the plurality of second electrodes on a plane where the display panel is located is in a grid shape.
Preferably, the display device further includes a first polarizing plate and a second polarizing plate;
the first polaroid is positioned on one side, away from the display panel, of the liquid crystal dimming box;
the second polaroid is positioned between the electrolyte box and the display panel or between the backlight module and the electrolyte box.
Preferably, the liquid crystal dimming cell comprises a third transparent substrate and a fourth transparent substrate, and a polymer dispersed liquid crystal layer between the third substrate and the fourth substrate;
a plurality of third electrodes are arranged on one side, facing the fourth transparent substrate, of the third transparent substrate; a plurality of fourth electrodes are arranged on one side, facing the third transparent substrate, of the fourth transparent substrate; the third electrodes correspond to the fourth electrodes one to one; the third electrodes and the fourth electrodes which are in one-to-one correspondence are opposite to each other in the direction perpendicular to the plane of the display panel;
the liquid crystal dimming unit comprises the third electrode, the fourth electrode and a polymer dispersed liquid crystal layer between the third electrode and the fourth electrode which are in one-to-one correspondence.
Preferably, the vertical projections of the plurality of third electrodes and the plurality of fourth electrodes on the plane of the display panel are parallel along the array row direction and are sequentially arranged along the array column direction;
or;
the vertical projections of the plurality of third electrodes and the plurality of fourth electrodes on the plane where the display panel is located are parallel along the array column direction and are sequentially arranged along the array row direction.
Preferably, the vertical projection of the plurality of third electrodes and the plurality of fourth electrodes on the plane of the display panel is in a grid shape.
Preferably, the surface of the first electrode or the second electrode is a rough surface.
In the embodiment of the utility model, through increasing electrolyte box and liquid crystal dimming box in the display device, under wide visual angle mode, the electrolyte box is not powered, and the liquid crystal dimming box is powered, and electrolyte box and liquid crystal dimming box are transparent state display, do not shelter from the light that backlight unit goes out, and the display device can realize wide visual angle mode; in the narrow visual angle mode, the electrolyte box is powered on, the liquid crystal dimming box is not powered on, after the electrolyte box is powered on, a light blocking layer is formed on the first electrode or the second electrode to block light rays of partial visual angles emitted by the backlight module, the liquid crystal dimming unit in the liquid crystal dimming box is in a fog state under the condition that the liquid crystal dimming unit is not powered on after passing through the liquid crystal dimming box, and the narrow visual angle mode can be further optimized by twisting and atomizing the light rays irradiated to the liquid crystal dimming unit. The embodiment of the utility model provides a can realize that wide and narrow visual angle switches the demonstration.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present invention;
fig. 2 is a schematic view illustrating light propagation of a display device in a wide viewing angle mode according to a first embodiment of the present invention;
fig. 3 is a schematic view illustrating light propagation of a display device in a narrow viewing angle mode according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display device according to a first embodiment of the present invention;
fig. 5 is a schematic view of a thickness structure of an electrolyte box of a display device according to a first embodiment of the present invention;
fig. 6 is a schematic front view of a first electrode and a second electrode in a display device according to a first embodiment of the present invention;
fig. 7 is a schematic front view illustrating another structure of the first electrode and the second electrode in the display device according to the first embodiment of the present invention;
fig. 8 is a schematic front view of a display device according to a first embodiment of the present invention;
fig. 9 is a schematic structural diagram of a display device according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention, as shown in fig. 1, the display device includes: a display panel 30, a backlight module 10, an electrolyte box 20 and a liquid crystal dimming box 40; the electrolyte box 20 is arranged on one side of the light-emitting surface of the backlight module 10; the display panel 30 is located on one side of the electrolyte box 20 away from the backlight module 10; the liquid crystal dimming cell 40 is positioned on one side of the display panel 30, which is far away from the electrolyte cell 20, and the light emergent side of the display panel 30 faces the liquid crystal dimming cell 40; a plurality of first electrodes 200 and a plurality of second electrodes 210 are arranged in the electrolyte box 20; after the electrolyte box 20 is powered on, a light blocking layer is formed on the first electrode 200 or the second electrode 210 to block part of the light rays with the viewing angle emitted by the backlight module 10.
The display panel 30 includes a plurality of pixel display regions 310 arranged in an array and a black matrix light-shielding region 320 located between the pixel display regions; the liquid crystal dimming cell 40 includes a plurality of liquid crystal dimming cells 410; the liquid crystal dimming unit 410 is located in the black matrix shading area 320; when the liquid crystal dimming cell 40 is powered on, the liquid crystal dimming cell 410 is in a transparent state, and when the liquid crystal dimming cell 40 is not powered on, the liquid crystal dimming cell 410 is in a fog state.
Fig. 2 is a schematic view of light propagation of the display device in the wide view angle mode according to the embodiment of the present invention, referring to fig. 2, the electrolyte box 20 is not powered, and the liquid crystal dimming box 40 is powered in the wide view angle mode. The first electrode 200 or the second electrode 210 of the electrolyte box 20 is an electrode made of a transparent material, and when the electrolyte box 20 is not powered, the electrolyte box 20 is in a transparent state. The light emitted from the backlight module 10 passes through the electrolyte box 20 and then reaches the display panel 30, and passes through the display panel 30 and then reaches the liquid crystal dimming box 40, because the liquid crystal dimming box 40 is powered on, the plurality of liquid crystal dimming cells 410 of the liquid crystal dimming box 40 are in a transparent state, the emitted light normally passes through, the display device is in a wide viewing angle mode, and the display viewing angle is θ 1.
Fig. 3 is a schematic view of light propagation of the display device in the narrow viewing angle mode according to the first embodiment of the present invention, referring to fig. 3, in the narrow viewing angle mode, the electrolyte box 20 is powered on, and the liquid crystal dimming box 40 is not powered on. Under the condition that the first electrode 200 and the second electrode 210 in the electrolyte box 20 are powered on, the electrolyte in the electrolyte box 20 is decomposed, a light blocking layer 220 is formed on the plurality of first electrodes 200 or the plurality of second electrodes 210 (fig. 3 illustrates that the light blocking layer 220 is formed on the second electrode 210), the light blocking layer 220 blocks part of light rays of a viewing angle emitted by the backlight module 10, the light rays emitted by the backlight module 10 are limited in a certain viewing angle range, the display viewing angle is θ 2, and the viewing angle θ 2 is smaller than the viewing angle θ 1. Therefore, the light emitted from the backlight module 10 reaches the display panel 30 after passing through the electrolyte box 20, and reaches the liquid crystal dimming box 40 after passing through the display panel 30, because the liquid crystal dimming boxes 40 are in a fog state when not powered, the plurality of liquid crystal dimming cells 410 of the liquid crystal dimming box 40 emit light rays which pass through the liquid crystal dimming boxes 40, and the liquid crystal dimming boxes 40 twist and atomize the light rays incident to the liquid crystal dimming cells 410, the narrow viewing angle mode can be further optimized.
Preferably, with continued reference to fig. 1, the display device further comprises a first polarizer 50 and a second polarizer 60, the first polarizer 50 being located on the side of the liquid crystal box 40 facing away from the display panel 30 in fig. 4, and the second polarizer 60 also being located between the electrolyte box 20 and the display panel 30. In addition, the second polarizer 60 may also be positioned between the backlight assembly 10 and the electrolyte tank 20 (as shown in fig. 4).
As shown in fig. 4, the display panel 30 includes a color film substrate 330, an array substrate 340 and a liquid crystal layer 350; the color filter substrate 330 is disposed opposite to the array substrate 340, and the liquid crystal layer 350 is disposed between the color filter substrate 330 and the array substrate 340.
One side of the color film substrate 330 close to the array substrate 340 includes a black matrix 360 and a color film layer 370. The color film layer 370 includes a first color resist layer, a second color resist layer and a third color resist layer, the first color resist layer, the second color resist layer and the third color resist layer are arranged at intervals, and the black matrix 360 is arranged between the color resist layers. The first color resistance layer, the second color resistance layer and the third color resistance layer are respectively made of color resistance materials of three colors of red (R), green (G) and blue (B), and sub-pixels (sub-pixels) of the three colors of red, green and blue are respectively and correspondingly formed. Each color resist layer is disposed in the pixel display region 310, and the black matrix 360 is disposed in the black matrix light-shielding region 320. The array substrate 340 includes thin film transistors and pixel electrodes arranged in an array. In the present embodiment, the display panel 30 is an IPS, FFS, or VA mode display panel, but not limited thereto.
With continued reference to fig. 4, the electrolyte cartridge 20 includes a first transparent substrate 230 and a second transparent substrate 240, and an electrolyte 250 positioned between the first transparent substrate 230 and the second transparent substrate 240. The plurality of first electrodes 200 are located on a side of the first transparent substrate 230 facing the second transparent substrate 240, the plurality of second electrodes 210 are located on a side of the second transparent substrate 240 facing the first transparent substrate 230, the first electrodes 200 and the second electrodes 210 are in one-to-one correspondence, and the first electrodes 200 and the second electrodes 210 in one-to-one correspondence are opposite to each other in a direction perpendicular to a plane where the display panel 30 is located. After the electrolyte box is powered on, an electric field is generated between the first electrodes 200 and the second electrodes 210 which are in one-to-one correspondence, so that the electrolyte in the electrolyte box 20 can be decomposed, and a light blocking layer 220 for blocking light from passing is formed on the plurality of first electrodes 200 or the plurality of second electrodes 210.
First transparent substrate 230 and second transparent substrate 240 can be organic transparent glass substrate or other organic transparent materials, sets up first transparent substrate 230 and second transparent substrate 240 and make light normally pass through electrolyte box 20 for organic transparent materials, the utility model discloses do not restrict first transparent substrate 230 and second transparent substrate 240 material. The electrolyte 250 may include an electrolyte, which may be silver nitrate or other soluble Ag ion component, an electrolyte solution, which may be dimethyl sulfoxide, and an electrochemical mediator, which may be copper chloride. When the electrolyte cartridge 20 is powered up, the electrolyte in the electrolyte cartridge 20 is decomposed into a solution containing silver ions, and the silver ion component in the electrolyte solution can be attached to the first electrode 200 or the second electrode 210. The embodiment of the utility model provides an electrolyte composition is the preferred scheme that provides only, the utility model discloses to the restriction of electrolyte solution, any electrolyte solution that can realize under the circular telegram state that electrolyte solution ion deposits and carry out sheltering from at first electrode 200 or second electrode 210 to emergent ray is all the utility model discloses a protection scope.
When the display device performs wide-viewing-angle display, the electrolyte box 20 is not powered on, and the electrolyte 250 is in a transparent state, so that normal display is not affected. When the display device performs narrow-view display, the electrolyte box 20 is powered on, a voltage difference is generated between the first electrode 200 and the second electrode 210 corresponding to each other in the electrolyte box 20, and an electric field is further generated, at this time, the solution containing silver ions in the electrolyte 250 is decomposed into silver ions, the silver ions are attached to the first electrode 200 or the second electrode 210 to form the light blocking layer 220 under the action of the electric field, when the display device needs to be switched to a wide-view angle, the electrolyte box 20 is not powered on, no voltage difference is generated between the first electrode 200 and the second electrode 210 corresponding to each other in the electrolyte box 20, and the silver ions forming the light blocking layer 220 on the first electrode 200 or the second electrode 210 are combined to form a compound containing silver ions, so that the electrolyte 250 returns to a transparent state.
Illustratively, referring to FIG. 5, the light angle β, the distance D between adjacent first electrodes 200, the cell thickness h of the electrolyte cell 20, and the refractive index n of the electrolyte 250 in the electrolyte cell 20 when the electrolyte cell 20 is energizedLiquid for treating urinary tract infectionAnd refractive index n of airQi (Qi)The following formula is satisfied:
when the refractive index of air is 1.0, the refractive index of the electrolyte solution is 1.33 after decomposition, and when β ≧ 45 ° needs to be shielded, the lower incident light angle α is defined by sin β · nQi (Qi)＝sinα·nLiquid for treating urinary tract infectionCan calculate outThe electrolyte tank thicknesses h and D are calculated from h ═ D/tan α, and the relationship between the electrolyte tank thickness h and the distance D between the adjacent first electrodes 200 is defined.
Preferably, with continued reference to fig. 4, the liquid crystal dimming cell 40 includes a third transparent substrate 420 and a fourth transparent substrate 430, and a polymer dispersed liquid crystal layer 460 located between the third transparent substrate 420 and the fourth transparent substrate 430, a side of the third transparent substrate 420 facing the fourth transparent substrate 430 is provided with a plurality of third electrodes 440, a side of the fourth transparent substrate 430 facing the third transparent substrate 420 is provided with a plurality of fourth electrodes 450, the third electrodes 440 and the fourth electrodes 450 are in one-to-one correspondence, and the one-to-one correspondence of the third electrodes 440 and the fourth electrodes 450 is opposite to each other in a direction perpendicular to the plane of the display panel 30. The liquid crystal dimming cell 410 includes a third electrode 440, a fourth electrode 450, and a polymer dispersed liquid crystal layer 460 between the third electrode 440 and the fourth electrode 450 in a one-to-one correspondence.
When the liquid crystal dimming cell 40 is powered up, a voltage is generated between the third electrode 440 and the fourth electrode 450, the polymer dispersed liquid crystal layer 460 between the one-to-one corresponding third electrode 440 and fourth electrode 450 is in a transparent state when the liquid crystal dimming cell is powered up, and emergent light rays normally emerge after passing through the liquid crystal dimming cell 40. Under the condition that the liquid crystal dimming cell 40 is not powered on, no voltage is generated between the third electrode 440 and the fourth electrode 450, the polymer dispersed liquid crystal layer 460 between the one-to-one corresponding third electrode 440 and fourth electrode 450 can be in an atomized state under the state that no voltage is applied, the emergent light passes through the liquid crystal dimming unit 410, and the liquid crystal dimming unit 410 distorts and atomizes the light exceeding a certain angle in the emergent light, so as to further optimize the emergent light with a narrow viewing angle.
The voltage range applied by the liquid crystal cell 40 is between 8V and 20V, and the polymer dispersed liquid crystal layer 460 between the third transparent substrate 420 and the fourth transparent substrate 430 can be in a better transparent state by adjusting the voltage range of the liquid crystal cell 40.
It should be noted that the thickness of the liquid crystal light-adjusting box 40 is calculated in the same manner as the thickness of the electrolyte box 20, as long as the narrow-angle viewing range required by the user, i.e. the light ray emergence, is determinedAccording to the refractive index n of airQi (Qi)And refractive index n of polymer dispersed liquid crystal layer 460Liquid crystal layerThe angle of incidence of the light can be determined, i.e., the angle of incidence delta, the angle of emergence epsilon, the distance X between adjacent third electrodes 440, the cell thickness y of the LC cell 40, the refractive index n of the polymer dispersed liquid crystal layer 460 can be definedLiquid crystal layerAnd refractive index n of airQi (Qi)The following formula is satisfied: n isLiquid crystal layer·sinδ＝nQi (Qi)·sinε
Further, a proportional relationship between the liquid crystal dimming cell y and X can be calculated according to y ═ X/tan δ, and a relationship between the liquid crystal dimming cell thickness y and the distance X between the adjacent third electrodes 440 can be further defined.
Preferably, the areas where the first electrode 200 and the second electrode 210 are located in the black matrix shading area 320.
Since the areas where the first electrodes 200 and the second electrodes 210 are located in the black matrix light-shielding region 320 in one-to-one correspondence, the light-shielding layer is also located in the black matrix light-shielding region 320, so as to prevent light from blocking the pixel display region 310.
Preferably, the surface of the first electrode 200 or the second electrode 210 is a rough surface. The surface of the first electrode 200 or the second electrode 210 is rough, so as to prevent a silver mirror layer capable of reflecting light from being formed on the first electrode 200 or the second electrode 210, wherein a surface of the first electrode 200 or the second electrode 210 away from the first transparent substrate 230 or the second transparent substrate 240 is rough, as shown in fig. 3, a light blocking layer 220 capable of blocking light is formed on a surface of the second electrode 210 away from the second transparent substrate 240, and the formed light blocking layer 220 is black. In this embodiment, when the second electrode 210 is used as a low voltage electrode, a surface of the second electrode 210 away from the second transparent substrate 240 is a rough surface, so as to conveniently form the light blocking layer 220, and at this time, a surface of the first electrode 200 away from the first transparent substrate 230 is a smooth surface; in another mode, when the first electrode 200 is used as a low voltage electrode, a surface of the first electrode 200 away from the first transparent substrate 230 is a rough surface, so that the light blocking layer 220 is conveniently formed, and a surface of the second electrode 210 away from the second transparent substrate 240 is a smooth surface. Under the electrolytic state of the electrolyte 250, silver ions electrolyzed by the electrolyte 250 are more easily attached to the surface of the first electrode 200 or the second electrode 210, so that part of angles of light rays emitted by the backlight module 10 are shielded, and a narrow viewing angle mode is realized.
Illustratively, referring to fig. 6, the vertical projections of the plurality of first electrodes 200 and the plurality of second electrodes 210 on the plane of the display panel 30 are parallel along the array row direction and are sequentially arranged along the array column direction. The array row direction refers to a row direction of an array formed by arranging a plurality of pixel display regions, and the array column direction refers to a column direction of the array formed by arranging a plurality of pixel display regions. Since the light blocking layer is formed in the area between two adjacent rows of pixel display regions when the electrolyte tank 40 is powered on, the arrangement of the first electrodes 200 and the second electrodes 210 shown in fig. 6 can limit the vertical viewing angle, i.e. the viewing angle perpendicular to the array row direction.
In other embodiments, the third electrode 440 and the fourth electrode 450 of the liquid crystal light modulation cell 40 may be arranged in the same manner, and the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 are parallel along the array row direction and are sequentially arranged along the array column direction, so that the effect of narrow viewing angles up and down can be further optimized by the liquid crystal light modulation cell 40. Alternatively, in other embodiments, the third electrode 440 and the fourth electrode 450 of the liquid crystal dimming cell 40 may be arranged differently, and the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 are parallel along the array column direction and are sequentially arranged along the array row direction, and the effect of horizontal narrow viewing angle may be further optimized by the liquid crystal dimming cell 40.
Illustratively, referring to fig. 7, the vertical projections of the plurality of first electrodes 200 and the plurality of second electrodes 210 on the plane of the display panel 30 are parallel along the array column direction and are sequentially arranged along the array row direction. Since the light blocking layer is formed in the area between two adjacent columns of pixel display regions when the electrolyte tank 40 is powered on, the arrangement of the first electrodes 200 and the second electrodes 210 shown in fig. 7 can limit the horizontal viewing angle, i.e. the viewing angle parallel to the array row direction.
In other embodiments, the third electrode 440 and the fourth electrode 450 of the liquid crystal light modulation cell 40 may be arranged in the same manner, and the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 are parallel along the array column direction and are sequentially arranged along the array row direction, so that the effect of horizontal narrow viewing angle can be further optimized by the liquid crystal light modulation cell 40. Alternatively, in other embodiments, the third electrode 440 and the fourth electrode 450 of the liquid crystal dimming cell 40 may be arranged differently, and the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 are parallel along the array row direction and are sequentially arranged along the array column direction, and the effect of narrow viewing angles up and down may be further optimized by the liquid crystal dimming cell 40.
Illustratively, referring to fig. 8, the plurality of first electrodes 200 and the plurality of second electrodes 210 may also be in a grid shape in a vertical projection on the plane of the display panel 30. Since the light blocking layers are formed in the areas between the two adjacent columns of pixel display areas and between the two adjacent columns of pixel display areas when the electrolyte tank 40 is powered on, the arrangement of the first electrodes 200 and the second electrodes 210 shown in fig. 8 can realize full-view control of the display panel, that is, the viewing angle in the direction parallel to the array row can be limited, and the viewing angle in the direction perpendicular to the array row can also be limited.
In other embodiments, the third electrode 440 and the fourth electrode 450 of the liquid crystal dimming cell 40 may be arranged in the same manner, and the vertical projection of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 may be in a grid shape, so that the effect of the full narrow viewing angle may be further optimized by the liquid crystal dimming cell 40.
According to the technical scheme of the embodiment, the electrolyte box and the liquid crystal dimming box are additionally arranged in the display device, in the wide visual angle mode, the electrolyte box is not powered, the liquid crystal dimming box is powered, the electrolyte box and the liquid crystal dimming box are both in transparent state display, light emitted by the backlight module is not shielded, and the display device can realize the wide visual angle mode; in the narrow visual angle mode, the electrolyte box is powered on, the liquid crystal dimming box is not powered on, after the electrolyte box is powered on, a light blocking layer is formed on the first electrode or the second electrode to block light rays of partial visual angles emitted by the backlight module, the liquid crystal dimming unit in the liquid crystal dimming box is in a fog state under the condition that the liquid crystal dimming unit is not powered on after passing through the liquid crystal dimming box, and the narrow visual angle mode can be further optimized by twisting and atomizing the light rays irradiated to the liquid crystal dimming unit. The embodiment of the utility model provides a can realize that wide and narrow visual angle switches the demonstration.
Example two
Fig. 9 is a schematic structural view of a display device according to the second embodiment of the present invention, as shown in fig. 9, the electrolyte box 20 includes a plurality of transparent supporting plates 260 and an electrolyte 250, the transparent supporting plates 260 are spaced from each other, the electrolyte 250 is disposed between the transparent supporting plates 260, the first electrode 200 and the second electrode 210 are respectively disposed on two side surfaces of the transparent supporting plates 260, and a plane where the transparent supporting plates 260 are located is perpendicular to a plane where the display panel 30 is located.
Preferably, the tangent plane of a plurality of transparent support plates 260 along perpendicular display panel 30 direction can be shape such as rectangle, trapezoidal, triangle-shaped for satisfy different market demands, and the material of a plurality of transparent support plates 260 can be transparent materials such as silicon nitride P-SiNx, polyvinyl butyral (PVB), the utility model discloses do not restrict this.
As shown in fig. 9, the plurality of transparent supporting plates 260 are disposed at intervals along the black matrix 360, and the vertical projections of the plurality of transparent supporting plates 260 and the plurality of first electrodes 200 and the plurality of second electrodes 210 on the plane of the display panel 30 are all located in the black matrix shading area 320. An electrolytic bath is formed between two adjacent transparent supporting plates 260, the electrolyte 250 is filled in each electrolytic bath, the first electrode 200 and the second electrode 210 are respectively arranged on two side surfaces of each transparent supporting plate 260, and when the electrolyte box 20 is powered up, the light blocking layer 220 can be formed on the first electrode 200 or the second electrode 210, so that when the display device performs narrow-view-angle display, the light blocking layer 220 can block large-angle light emitted from the backlight module, and a narrow-view-angle mode is realized.
Specifically, the vertical projection of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 of the liquid crystal dimming cell 40 on the plane of the display panel 30 is in a grid shape and is located in the black matrix shading area 320. Because the light beyond a certain angle in the emergent light can be distorted and atomized when the liquid crystal dimming box 40 is not powered on, the effect of a full narrow visual angle can be further optimized.
In other embodiments, the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 of the liquid crystal dimming cell 40 on the plane of the display panel 30 are parallel along the array row direction. When the liquid crystal dimming box 40 is not powered on, light exceeding a certain angle in emergent light can be distorted and atomized, so that the effect of narrow viewing angle in the upper and lower directions can be further optimized. Alternatively, in other embodiments, the third electrodes 440 and the fourth electrodes 450 of the liquid crystal dimming cell 40 may be arranged differently, and the vertical projections of the plurality of third electrodes 440 and the plurality of fourth electrodes 450 on the plane of the display panel 30 are parallel along the array column direction and are sequentially arranged along the array row direction. The effect of a horizontally narrow viewing angle can be further optimized.
According to the technical scheme, the transparent support plate is arranged on the electrolyte box, the first electrode and the second electrode are arranged on the two side faces of the transparent support plate, the electrolyte box can form the light blocking layer on one side of the first electrode or the second electrode under the condition of power-on, and the light blocking layer can block large-angle light emitted from the backlight module, so that a narrow viewing angle mode is realized. Meanwhile, the narrow visual angle effect can be further optimized through the liquid crystal dimming box.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A display device, comprising: the display device comprises a display panel, a backlight module, an electrolyte box and a liquid crystal dimming box; the electrolyte box is arranged on one side of the light emitting surface of the backlight module; the display panel is positioned on one side of the electrolyte box, which is far away from the backlight module; the liquid crystal dimming box is positioned on one side of the display panel, which is far away from the electrolyte box, and the light emitting side of the display panel faces the liquid crystal dimming box;
a plurality of first electrodes and a plurality of second electrodes are arranged in the electrolyte box; after the electrolyte box is powered on, a light blocking layer is formed on the first electrode or the second electrode to block partial visual angle light rays emitted by the backlight module;
the display panel comprises a plurality of pixel display areas arranged in an array mode and a black matrix shading area located between the pixel display areas;
the liquid crystal dimming box comprises a plurality of liquid crystal dimming units; the liquid crystal dimming unit is positioned in the black matrix shading area; the liquid crystal dimming box is powered on, and the liquid crystal dimming unit is in a transparent state; the liquid crystal dimming box is not powered up, and the liquid crystal dimming unit is in a fog state.
2. The display device according to claim 1, wherein the electrolyte cartridge comprises a first transparent substrate and a second transparent substrate, and an electrolyte solution between the first transparent substrate and the second transparent substrate;
the plurality of first electrodes are positioned on one side of the first transparent substrate facing the second transparent substrate; the second electrodes are positioned on one side of the second transparent substrate facing the first transparent substrate;
the first electrodes correspond to the second electrodes one to one; the first electrodes and the second electrodes which are in one-to-one correspondence are opposite to each other in the direction perpendicular to the plane of the display panel.
3. The display device according to claim 1, wherein the electrolyte case includes a plurality of transparent support plates and an electrolyte, the transparent support plates are spaced apart from each other, the electrolyte is disposed between the transparent support plates, and the first electrode and the second electrode are disposed on both sides of the transparent support plates, respectively; the plane of the transparent support plate is perpendicular to the plane of the display panel.
4. The display device according to claim 1, wherein the area where the first electrode and the second electrode are located is located in the black matrix shading area.
5. The display device according to claim 1, wherein a vertical projection of the plurality of first electrodes and the plurality of second electrodes on a plane of the display panel is parallel to a row direction of the array and sequentially arranged along a column direction of the array;
or;
the vertical projections of the first electrodes and the second electrodes on the plane of the display panel are parallel along the array column direction and are sequentially arranged along the array row direction.
6. The display device according to claim 1, wherein a vertical projection of the plurality of first electrodes and the plurality of second electrodes on a plane of the display panel is in a grid shape.
7. The display device according to claim 1, further comprising a first polarizing plate and a second polarizing plate;
the first polaroid is positioned on one side, away from the display panel, of the liquid crystal dimming box;
the second polaroid is positioned between the electrolyte box and the display panel or between the backlight module and the electrolyte box.
8. The display device according to claim 1, wherein the liquid crystal dimming cell comprises a third transparent substrate and a fourth transparent substrate, and a polymer dispersed liquid crystal layer between the third transparent substrate and the fourth transparent substrate;
a plurality of third electrodes are arranged on one side, facing the fourth transparent substrate, of the third transparent substrate; a plurality of fourth electrodes are arranged on one side, facing the third transparent substrate, of the fourth transparent substrate; the third electrodes correspond to the fourth electrodes one to one; the third electrodes and the fourth electrodes which are in one-to-one correspondence are opposite to each other in the direction perpendicular to the plane of the display panel;
the liquid crystal dimming unit comprises the third electrode, the fourth electrode and a polymer dispersed liquid crystal layer between the third electrode and the fourth electrode which are in one-to-one correspondence.
9. The display device according to claim 8, wherein vertical projections of the plurality of third electrodes and the plurality of fourth electrodes on a plane of the display panel are parallel to each other in an array row direction and sequentially arranged in an array column direction;
or;
the vertical projections of the plurality of third electrodes and the plurality of fourth electrodes on the plane where the display panel is located are parallel along the array column direction and are sequentially arranged along the array row direction.
10. The display device according to claim 8, wherein a vertical projection of the plurality of third electrodes and the plurality of fourth electrodes on a plane of the display panel is in a grid shape.
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| CN201921955228.0U CN210534493U (en) | 2019-11-13 | 2019-11-13 | Display device |
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| CN201921955228.0U CN210534493U (en) | 2019-11-13 | 2019-11-13 | Display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112596304A (en) * | 2020-12-30 | 2021-04-02 | 京东方科技集团股份有限公司 | Backlight module of display device and display device |
| CN113703214A (en) * | 2020-05-20 | 2021-11-26 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN113934046A (en) * | 2021-10-21 | 2022-01-14 | 武汉华星光电技术有限公司 | Display device |
| CN115728985A (en) * | 2022-11-29 | 2023-03-03 | 惠科股份有限公司 | Display panel, display panel driving method and display device |
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| CN113703214A (en) * | 2020-05-20 | 2021-11-26 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN113703214B (en) * | 2020-05-20 | 2022-11-11 | 福州京东方光电科技有限公司 | Display panel and display device |
| CN112596304A (en) * | 2020-12-30 | 2021-04-02 | 京东方科技集团股份有限公司 | Backlight module of display device and display device |
| CN113934046A (en) * | 2021-10-21 | 2022-01-14 | 武汉华星光电技术有限公司 | Display device |
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| CN116088224A (en) * | 2023-02-27 | 2023-05-09 | 惠科股份有限公司 | Backlight module, display device and display driving method |
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