CN220020053U - Display panel with switchable viewing angles and display device - Google Patents
Display panel with switchable viewing angles and display device Download PDFInfo
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- CN220020053U CN220020053U CN202321569375.0U CN202321569375U CN220020053U CN 220020053 U CN220020053 U CN 220020053U CN 202321569375 U CN202321569375 U CN 202321569375U CN 220020053 U CN220020053 U CN 220020053U
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- 150000004706 metal oxides Chemical class 0.000 claims description 23
- 229910044991 metal oxide Inorganic materials 0.000 claims description 18
- 229910052755 nonmetal Inorganic materials 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
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- 239000000463 material Substances 0.000 abstract description 6
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- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 88
- 238000010586 diagram Methods 0.000 description 7
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- 230000005684 electric field Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
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- 239000003086 colorant Substances 0.000 description 2
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- 238000000034 method Methods 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a display panel with a switchable visual angle and a display device, wherein the display panel comprises a dimming box and a display liquid crystal box which are mutually overlapped; the dimming box comprises a first substrate, a second substrate and a first liquid crystal layer, wherein a viewing angle auxiliary electrode is arranged on the first substrate, a viewing angle control electrode and an oxide transflective film are arranged on the second substrate, the viewing angle control electrode and the viewing angle auxiliary electrode are mutually matched, and the oxide transflective film has a transmission effect and a reflection effect on light. The oxide transflective film not only can transmit backlight, but also can reflect ambient light, so that when the backlight is watched under a large viewing angle of a narrow viewing angle, the reflected ambient light can cause certain interference to the transmitted backlight, thereby enhancing the effect of the narrow viewing angle; the oxide transparent and reflective film is made of oxide material, so that the thickness of the oxide transparent and reflective film is thinner, the light and thin development of the display panel is facilitated, in addition, the oxide material can be sprayed on the second substrate and form a whole with the second substrate, and the manufacturing cost is lower.
Description
Technical Field
The present utility model relates to the field of display technologies, and in particular, to a display panel and a display device with switchable viewing angles.
Background
With the continuous progress of the liquid crystal display technology, the visual angle of the display is widened to more than 160 degrees from about 120 degrees originally, and people want to effectively protect business confidentiality and personal privacy while enjoying the visual experience brought by a large visual angle so as to avoid business loss or embarrassment caused by the leakage of screen information. In addition to the wide viewing angle requirement, there are many occasions where the display device is required to have a function of switching between wide and narrow viewing angles.
At present, a shutter shielding film is attached to a display screen to realize wide and narrow viewing angles, when peep prevention is needed, the viewing angles can be reduced by shielding the screen by using the shutter shielding film, but the shutter shielding film is additionally prepared in the mode, so that great inconvenience is caused to a user, one shutter shielding film can only realize one viewing angle, once the shutter shielding film is attached, the viewing angle is fixed in a narrow viewing angle mode, free switching between the wide viewing angle mode and the narrow viewing angle mode is not realized, and the peep prevention sheet can cause brightness reduction to influence grade. There are also prior art double box structures for switching between wide and narrow viewing angles using a dimming box and a display panel, wherein the display panel is used for normal picture display and the dimming box is used for controlling the viewing angle switching. The dimming box comprises an upper substrate, a lower substrate and a liquid crystal layer between the upper substrate and the lower substrate, wherein a vertical electric field is applied to liquid crystal molecules by visual angle control electrodes on the upper substrate and the lower substrate, so that the liquid crystal deflects towards the vertical direction, a narrow visual angle mode is realized, and the switching between a wide visual angle and a narrow visual angle can be realized by controlling the voltage on the visual angle control electrodes. However, such a display panel is inferior in the case of realizing a narrow viewing angle display by reducing contrast by utilizing a large viewing angle light receiving.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the utility model aims to provide a display panel with switchable viewing angles and a display device, so as to solve the problem of poor effect of a narrow viewing angle in the prior art.
The aim of the utility model is achieved by the following technical scheme:
the utility model provides a display panel with a switchable visual angle, which comprises a dimming box and a display liquid crystal box which are mutually overlapped;
the light modulation box comprises a first substrate, a second substrate which is arranged opposite to the first substrate, and a first liquid crystal layer which is arranged between the first substrate and the second substrate, wherein a viewing angle auxiliary electrode is arranged on the first substrate, a viewing angle control electrode and an oxide transflective film are arranged on the second substrate, the viewing angle control electrode is mutually matched with the viewing angle auxiliary electrode, the oxide transflective film has a transmission effect and a reflection effect on light, and a plurality of first bulge structures are arranged on the oxide transflective film;
the display liquid crystal box comprises a color film substrate, an array substrate arranged opposite to the color film substrate and a second liquid crystal layer arranged between the color film substrate and the array substrate.
Further, the oxide transflective film includes at least one transparent non-metal oxide film layer and at least one transparent metal oxide film layer, which are alternately laminated with each other.
Further, the transparent non-metal oxide film layer is silicon oxide, and the transparent metal oxide film layer is at least one of titanium oxide and niobium oxide.
Further, the transparent metal oxide film layer and the viewing angle control electrode are the same film layer.
Further, the oxide transflective film is arranged on one side of the second substrate away from the first liquid crystal layer;
and/or the oxide transflective film is arranged on one side of the second substrate facing the first liquid crystal layer.
Further, the viewing angle auxiliary electrode is a planar electrode covering the first substrate entirely, and the viewing angle control electrode is a planar electrode covering the second substrate entirely.
Further, a plurality of first bump structures are arranged on the oxide transflective film.
Further, a bump structure layer is disposed on the second substrate, a plurality of second bump structures are disposed on the bump structure layer, and the oxide transflective film covers the bump structure layer and forms the first bump structures in regions corresponding to the second bump structures.
Further, a flat layer is arranged on one side of the oxide transflective film away from the second substrate.
Further, a first polaroid is arranged between the dimming box and the display liquid crystal box, a second polaroid is arranged on one side, away from the dimming box, of the display liquid crystal box, a third polaroid is arranged on one side, away from the display liquid crystal box, of the dimming box, light transmission shafts of the first polaroid and the second polaroid are mutually perpendicular, and the light transmission shafts of the third polaroid and the first polaroid are mutually parallel.
The utility model also provides a display device comprising the display panel with switchable viewing angles.
The utility model has the beneficial effects that: the oxide transflective film can not only transmit backlight, but also reflect ambient light through the oxide transflective film on the second substrate of the light regulating box, so that the reflected ambient light can cause certain interference to the transmitted backlight when being watched under a large viewing angle with a narrow viewing angle, thereby enhancing the effect of the narrow viewing angle; the oxide transparent and reflective film is made of oxide material, so that the thickness of the oxide transparent and reflective film is thinner, the light and thin development of the display panel is facilitated, in addition, the oxide material can be sprayed on the second substrate and form a whole with the second substrate, and the manufacturing cost is lower.
Drawings
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the utility model at a wide viewing angle;
FIG. 2 is a schematic view showing the structure of an oxide transflective film according to a first embodiment of the present utility model;
FIG. 3 is a schematic view of a display device with a narrow viewing angle according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a display device with a narrow viewing angle according to a second embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a display device in a third embodiment of the present utility model at a narrow viewing angle;
fig. 6 is a schematic structural diagram of a display device in a fourth embodiment of the present utility model at a narrow viewing angle;
FIG. 7 is a schematic view showing a planar structure of a display device according to the present utility model;
FIG. 8 is a schematic diagram of a second planar structure of the display device according to the present utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the utility model to achieve the preset aim, the following detailed description is given of the specific implementation, structure, characteristics and effects of the display panel and the display device with switchable viewing angles according to the utility model by combining the accompanying drawings and the preferred embodiment:
example one
Fig. 1 is a schematic structural diagram of a display device with a wide viewing angle according to a first embodiment of the present utility model. Fig. 2 is a schematic structural view of an oxide transreflective film according to an embodiment of the present utility model. Fig. 3 is a schematic structural diagram of a display device with a narrow viewing angle according to a first embodiment of the present utility model.
As shown in fig. 1 to 3, a switchable viewing angle display panel provided in the first embodiment of the present utility model includes a dimming box 10 and a display liquid crystal box 30 that are stacked on each other, where the dimming box 10 is used to control the display panel to switch between a wide viewing angle and a narrow viewing angle, and the display liquid crystal box 30 is used to control gray scale of a picture display, that is, the display liquid crystal box 30 may be a common display panel, and may control light intensity of each sub-pixel, so as to control gray scale of the picture display. The dimming box 10 may be disposed at a side of the display liquid crystal box 30 away from the backlight module 40, or may be disposed at a side of the display liquid crystal box 30 facing the backlight module 40.
The dimming box 10 includes a first substrate 11, a second substrate 12 disposed opposite to the first substrate 11, and a first liquid crystal layer 13 between the first substrate 11 and the second substrate 12. The first substrate 11 is provided with a viewing angle auxiliary electrode 111, the second substrate 12 is provided with a viewing angle control electrode 121 and an oxide transflective film 21, the viewing angle control electrode 121 is matched with the viewing angle auxiliary electrode 111, the oxide transflective film 21 has a transmission function and a reflection function on light, and the reflection and transmission ratio of the oxide transflective film 21 can be set according to practical situations. The switching of the dimming box 10 between the wide viewing angle and the narrow viewing angle is controlled by controlling voltages on the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121. When the dimming box 10 is in a wide viewing angle, the oxide transflective film 21 mainly plays a role of transmitting backlight, and a displayed picture is visible in a full viewing angle; when the dimming case 10 is at a narrow viewing angle, the oxide transreflective film 21 mainly reflects external ambient light to enhance the narrow viewing angle effect. The viewing angle auxiliary electrode 111 is a planar electrode that covers the entire surface of the first substrate 11, and the viewing angle control electrode 121 is a planar electrode that covers the entire surface of the second substrate 12, so that the dimming box 10 can switch between wide and narrow viewing angles over the entire surface.
In this embodiment, the first liquid crystal layer 13 employs positive liquid crystal molecules, that is, liquid crystal molecules having positive dielectric anisotropy. Referring to fig. 1, in an initial state, positive liquid crystal molecules are aligned parallel to the first substrate 11 and the second substrate 12, and an alignment direction of the first liquid crystal layer 13 near the first substrate 11 and an alignment direction near the second substrate 12 are parallel (forward parallel or reverse parallel) to each other, so that the dimming cartridge 10 is in a wide viewing angle state in the initial state. The positive liquid crystal molecules in the first liquid crystal layer 13 may have a small initial pretilt angle between the first substrate 11 and the second substrate 12, and the range of the initial pretilt angle may be less than or equal to 10 degrees, that is: 0 DEG.ltoreq.0.ltoreq.10 DEG to reduce the response time of the vertical deflection of the positive liquid crystal molecules, i.e. to reduce the response time of switching between a wide viewing angle and a narrow viewing angle. Of course, in other embodiments, the first liquid crystal layer 13 may also use negative liquid crystal molecules, that is, liquid crystal molecules having negative dielectric anisotropy. The negative liquid crystal molecules are aligned obliquely to the first substrate 11 and the second substrate 12, so that the dimming cell 10 is in a narrow viewing angle state at the initial state.
In this embodiment, the oxide transflective film 21 is disposed on a side of the second substrate 12 away from the first liquid crystal layer 13, that is, the oxide transflective film 21 is disposed on a side of the second substrate 12 facing the display liquid crystal cell 30.
As shown in fig. 2, the oxide transflective film 21 includes at least one transparent nonmetallic oxide film layer 21a and at least one transparent metal oxide film layer 21b, the transparent nonmetallic oxide film layers 21a and the transparent metal oxide film layers 21b being alternately laminated with each other. The ratio of the transmission and reflection of the oxide transflective film 21 can be adjusted by the number of the film layers and the film thickness, i.e., the number and the film thickness of the transparent non-metal oxide film layer 21a and the transparent metal oxide film layer 21b can be adjusted according to the actual requirements.
Further, the transparent nonmetallic oxide film layer 21a is silicon oxide (SiO X ) The transparent metal oxide film layer 21b is titanium oxide (TiO X ) And niobium oxide (NbO) X ) At least one of them. The transparent nonmetallic oxide film layer 21a and the transparent metallic oxide film layer 21b may be formed by sputtering or vapor deposition to form the oxide transflective film 21 on the second substrate 12.
The display liquid crystal box 30 comprises a color film substrate 31, an array substrate 32 arranged opposite to the color film substrate 31, and a second liquid crystal layer 33 arranged between the color film substrate 31 and the array substrate 32. In this embodiment, positive liquid crystal molecules, that is, liquid crystal molecules with positive dielectric anisotropy, are used in the second liquid crystal layer 33, and as shown in fig. 1, in the initial state, the positive liquid crystal molecules in the second liquid crystal layer 33 are aligned parallel to the color film substrate 31 and the array substrate 32, and the positive liquid crystal molecules near the color film substrate 31 are antiparallel to the alignment direction of the positive liquid crystal molecules near the array substrate 32.
The color film substrate 31 is provided with a color resist layer 312 and a Black Matrix (BM) 311 that separates the color resist layer 312 on a side facing the second liquid crystal layer 33. The color resist layer 312 includes, for example, red (R), green (G), and blue (B) color resist materials, and respectively corresponds to pixel units of red, green, and blue colors. The black matrix 311 is positioned between pixel units of three colors of red, green and blue, so that adjacent pixel units are spaced apart from each other by the black matrix 311.
The array substrate 32 is formed by a plurality of scan lines and a plurality of data lines on a side facing the second liquid crystal layer 33, the scan lines and the data lines are mutually insulated and crossed to define a plurality of pixel units, the black matrix 311 corresponds to the scan lines and the data lines up and down, a pixel electrode 322 and a thin film transistor are arranged in each pixel unit, and the pixel electrode 322 is electrically connected with the data line adjacent to the thin film transistor through the thin film transistor. The thin film transistor includes a gate electrode, an active layer, a drain electrode, and a source electrode, wherein the gate electrode is located on the same layer as the scan line and electrically connected to the scan line, the gate electrode is isolated from the active layer by an insulating layer, the source electrode is electrically connected to the data line, and the drain electrode is electrically connected to the pixel electrode 322 by a contact hole.
In this embodiment, a common electrode 321 is further disposed on a side of the array substrate 32 facing the second liquid crystal layer 33, and the common electrode 321 and the pixel electrode 322 are located on different layers and are insulated and isolated by an insulating layer. The common electrode 321 may be located above or below the pixel electrode 322 (the common electrode 321 is shown below the pixel electrode 322 in fig. 1). Preferably, the common electrode 321 is a planar electrode disposed entirely, and the pixel electrode 322 is a block electrode disposed entirely within each pixel unit or a slit electrode having a plurality of electrode bars to form a fringe field switching pattern (Fringe Field Switching, FFS). Of course, in other embodiments, the pixel electrode 322 and the common electrode 321 are located at the same layer, but are insulated from each other, each of the pixel electrode 322 and the common electrode 321 may include a plurality of electrode bars, and the electrode bars of the pixel electrode 322 and the electrode bars of the common electrode 321 are alternately arranged with each other to form an In-Plane Switching (IPS); alternatively, in other embodiments, the pixel electrode 322 is disposed on the side facing the second liquid crystal layer 33 of the array substrate 32, and the common electrode 321 is disposed on the side facing the second liquid crystal layer 33 of the color film substrate 31 to form a TN mode or a VA mode, and other descriptions of the TN mode and the VA mode refer to the prior art, and are not repeated herein.
Further, a first polarizer 51 is disposed between the dimming box 10 and the display liquid crystal box 30, a second polarizer 52 is disposed on a side of the display liquid crystal box 30 away from the dimming box 10, a third polarizer 53 is disposed on a side of the dimming box 10 away from the display liquid crystal box 30, light transmission axes of the first polarizer 51 and the second polarizer 52 are perpendicular to each other, and the light transmission axes of the third polarizer 53 and the first polarizer 51 are parallel to each other. In the embodiment, a first polarizer 51 is disposed between the color film substrate 31 and the second substrate 12, a second polarizer 52 is disposed on a side of the array substrate 32 away from the second liquid crystal layer 33, and a third polarizer 53 is disposed on a side of the first substrate 11 away from the first liquid crystal layer 13.
The first substrate 11, the second substrate 12, the color film substrate 31, and the array substrate 32 may be made of transparent substrates such as glass, acrylic, and polycarbonate. The materials of the viewing angle auxiliary electrode 111, the viewing angle control electrode 121, the common electrode 321, and the pixel electrode 322 may be transparent electrodes such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).
The utility model also provides a display device, which comprises the display panel and the backlight module 40, wherein the backlight module 40 is positioned below the display panel and is used for providing a backlight source for the display panel. Of course, if the display case 20 employs a self-luminous display, the display device does not need to be additionally provided with a backlight.
The backlight module 40 includes a backlight 41 and a peep-proof layer 42, wherein the peep-proof layer 42 is used for reducing the range of the light emitting angle. A brightness enhancement film 43 is further disposed between the backlight 41 and the peep-proof layer 42, and the brightness enhancement film 43 increases the brightness of the backlight module 40. The peep-proof layer 42 is equivalent to a micro shutter structure, which can block light with larger incident angle, so that light with smaller incident angle passes through, and the angle range of light passing through the peep-proof layer 42 is reduced. The peep-proof layer 42 comprises a plurality of parallel light-resisting walls and light holes between two adjacent light-resisting walls, and light-absorbing materials are arranged on two sides of the light-resisting walls. Of course, the backlight 41 may be a light-collecting type backlight, so that the peep-proof layer 42 is not required, but the light-collecting type backlight is more expensive than the conventional backlight.
The backlight module 40 may be a side-in type backlight module or a direct type backlight module. Preferably, the backlight module 40 adopts a collimated backlight (CBL, collimated backlight) mode, which can collect light to ensure display effect.
As shown in fig. 1, at a wide viewing angle, no electric signal is applied to both the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121, a vertical electric field is not formed between the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121, the positive liquid crystal molecules in the first liquid crystal layer 13 are not substantially deflected in the vertical direction, and an initial flat lying posture is maintained, at which time the display device realizes a wide viewing angle display. In the case of wide viewing angle display, since the display device has high brightness in both the large viewing angle and the front viewing angle, the influence of the ambient light reflected by the oxide transflective film 21 on the wide viewing angle display can be substantially ignored.
In the wide viewing angle display, a common voltage is applied to the common electrode 321, a corresponding gray scale voltage is applied to the pixel electrode 322, a voltage difference is formed between the pixel electrode 322 and the common electrode 321, and a horizontal electric field (E1 in fig. 1) is generated, and the positive liquid crystal molecules in the second liquid crystal layer 23 are deflected in the horizontal direction, so that gray scale display is realized while controlling the intensity of light passing through the second liquid crystal layer 23. The gray scale voltages include 0 to 255 gray scale voltages, and when different gray scale voltages are applied to the pixel electrode 322, the pixel unit presents different brightness, so that different pictures are displayed under a wide viewing angle, and normal display of the display device under the wide viewing angle is realized.
As shown in fig. 3, at a narrow viewing angle, corresponding electric signals are applied to the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121, respectively, the voltage difference between the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121 is greater than a preset value (for example, greater than 5V), so that a strong vertical electric field (E2 in fig. 3) is formed between the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121, positive liquid crystal molecules in the first liquid crystal layer 13 are greatly deflected in the vertical direction and in an inclined posture, at this time, the first liquid crystal layer 13 is in a light receiving state at a large viewing angle (i.e., brightness at the large viewing angle is reduced), and contrast at the large viewing angle is reduced, and the display device realizes narrow viewing angle display. In the case of the narrow viewing angle display, since the brightness of the display device is low at a large viewing angle, the contrast ratio is reduced, and at this time, the reflected ambient light can cause stronger interference with the transmitted backlight at a large viewing angle, so that the ambient light reflected by the oxide transflective film 21 can enhance the narrow viewing angle effect.
In the case of the narrow viewing angle display, a common voltage is applied to the common electrode 321, a corresponding gray scale voltage is applied to the pixel electrode 322, a voltage difference is formed between the pixel electrode 322 and the common electrode 321, and a horizontal electric field (E1 in fig. 3) is generated, and the positive liquid crystal molecules in the second liquid crystal layer 23 are deflected in the horizontal direction, so that gray scale display is realized while controlling the intensity of light passing through the second liquid crystal layer 23. The gray scale voltages include 0 to 255 gray scale voltages, and when different gray scale voltages are applied to the pixel electrode 322, the pixel unit presents different brightness, so that different pictures are displayed under a narrow viewing angle, and normal display of the display device under the narrow viewing angle is realized.
Example two
Fig. 4 is a schematic view of a display device with a narrow viewing angle according to a second embodiment of the present utility model, as shown in fig. 4, the display panel with a switchable viewing angle and the display device provided by the second embodiment of the present utility model are substantially the same as those of the first embodiment (fig. 1 to 3), except that in the present embodiment, the oxide transflective film 21 is disposed on a side of the second substrate 12 facing the first liquid crystal layer 13. The oxide transflective film 21 is arranged on the side of the second substrate 12 facing the first liquid crystal layer 13, and can be manufactured on the same surface of the second substrate 12 with the viewing angle control electrode 121, so that a double-sided process is not required to be performed on the second substrate 12, and the difficulty of the manufacturing process is reduced; secondly, the oxide transparent and reflective film 21 can be protected to a certain extent, and the oxide transparent and reflective film 21 is prevented from being scratched.
Further, the oxide transflective film 21 and the viewing angle controlling electrode 121 are spaced apart from each other by an insulating layer, and have conductivity since the transparent metal oxide film layer 21b is included in the oxide transflective film 21.
Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first embodiment, and will not be described herein.
Example III
Fig. 5 is a schematic view of a display device with a narrow viewing angle in the third embodiment of the present utility model, as shown in fig. 5, the display panel with switchable viewing angle and the display device provided in the third embodiment of the present utility model are substantially the same as those in the first embodiment (fig. 1 to 3) and the second embodiment (fig. 4), except that in the present embodiment, the transparent metal oxide film layer 21b and the viewing angle control electrode 121 are the same film layer, that is, in the present embodiment, the viewing angle control electrode 121 is replaced by the transparent metal oxide film layer 21b, so that the thickness of the display panel can be reduced and the manufacturing cost can be reduced. Since the transparent metal oxide film layer 21b has a certain conductivity, it can be used as the viewing angle control electrode 121.
Among them, the transparent metal oxide film layer 21b is preferably provided on the side of the second substrate 12 facing the first liquid crystal layer 13, so that the distance between the transparent metal oxide film layer and the viewing angle auxiliary electrode 111 can be reduced, and driving power consumption can be reduced. Of course, as described in embodiment one, the oxide transreflective film 21 may be provided on the side of the second substrate 12 away from the first liquid crystal layer 13.
Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first and second embodiments, and will not be described herein.
Example IV
Fig. 6 is a schematic view of a display device with a narrow viewing angle according to a fourth embodiment of the present utility model, as shown in fig. 6, and the display panel and the display device with switchable viewing angles according to the fourth embodiment of the present utility model are substantially the same as those of the first embodiment (fig. 1 to 3), the second embodiment (fig. 4) and the third embodiment (fig. 5), except that in the present embodiment, a plurality of first bump structures are disposed on the oxide transreflective film 21. By providing a plurality of first convex structures on the oxide transflective film 21, thereby making the oxide transflective film 21 have a reflective effect of diffuse reflection, the reflective effect can be enhanced to increase the effect of a narrow viewing angle.
Specifically, the second substrate 12 is provided with a bump structure layer 22, a plurality of second bump structures are provided on the bump structure layer 22, the oxide transreflective film 21 covers the bump structure layer 22, and a first bump structure is formed in a region corresponding to the second bump structure. That is, in the present embodiment, the bump structure layer 22 is first formed on the second substrate 12, and then the oxide transflective film 21 is covered on the bump structure layer 22, so that the first bump structure is formed on the oxide transflective film 21 in the region corresponding to the second bump structure. Of course, in other embodiments, the plurality of first bump structures may also be formed directly on the oxide transflective film 21 through an etching process. The first protruding structure and the second protruding structure may be a hemispherical structure, a triangular pyramid structure, a polygonal pyramid structure, a semi-cylindrical structure, a triangular prism structure, or the like.
Further, the oxide transreflective film 21 is provided with a planarization layer 23 on a side away from the second substrate 12, so that a certain planarization effect can be performed on the oxide transreflective film 21.
Those skilled in the art will understand that the other structures and working principles of the present embodiment are the same as those of the first embodiment, the second embodiment and the third embodiment, and will not be described herein again.
Fig. 7 and 8 are schematic plan view structures of a display device according to an embodiment of the present utility model, please refer to fig. 7 and 8, wherein the display device is provided with a viewing angle switching key 60 for a user to send a viewing angle switching request to the display device. The view angle switching key 60 may be a physical key (as shown in fig. 7), or may be a software control or Application (APP) to implement a switching function (as shown in fig. 8, for example, by setting a wide and narrow view angle through a slider bar). When a user needs to switch between a wide viewing angle and a narrow viewing angle, a viewing angle switching request can be sent to the display device by operating the viewing angle switching key 60, and finally, the driving chip 70 controls the electric signals applied to the viewing angle auxiliary electrode 111 and the viewing angle control electrode 121, so that the display device can realize the switching between the wide viewing angle and the narrow viewing angle.
In this document, terms such as up, down, left, right, front, rear, etc. are defined by the positions of the structures in the drawings and the positions of the structures with respect to each other, for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed utility model. It should also be understood that the terms "first" and "second," etc., as used herein, are used merely for distinguishing between names and not for limiting the number and order.
The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (10)
1. A display panel with switchable viewing angles, characterized by comprising a dimming box (10) and a display liquid crystal box (30) which are mutually overlapped;
the light regulating box (10) comprises a first substrate (11), a second substrate (12) which is arranged opposite to the first substrate (11) and a first liquid crystal layer (13) which is arranged between the first substrate (11) and the second substrate (12), wherein a viewing angle auxiliary electrode (111) is arranged on the first substrate (11), a viewing angle control electrode (121) and an oxide transflective film (21) are arranged on the second substrate (12), the viewing angle control electrode (121) is matched with the viewing angle auxiliary electrode (111), the oxide transflective film (21) has a transmission effect and a reflection effect on light, and a plurality of first bulge structures are arranged on the oxide transflective film (21);
the display liquid crystal box (30) comprises a color film substrate (31), an array substrate (32) arranged opposite to the color film substrate (31) and a second liquid crystal layer (33) arranged between the color film substrate (31) and the array substrate (32).
2. The viewing-angle switchable display panel according to claim 1, wherein the oxide transflective film (21) comprises at least one transparent non-metal oxide film layer (21 a) and at least one transparent metal oxide film layer (21 b), the transparent non-metal oxide film layer (21 a) and the transparent metal oxide film layer (21 b) being alternately laminated to each other.
3. The viewing angle switchable display panel according to claim 2, wherein the transparent non-metal oxide film layer (21 a) is silicon oxide, and the transparent metal oxide film layer (21 b) is at least one of titanium oxide and niobium oxide.
4. The viewing angle switchable display panel according to claim 2, wherein the transparent metal oxide film layer (21 b) is the same film layer as the viewing angle control electrode (121).
5. The viewing-angle switchable display panel according to claim 1, wherein the oxide transflective film (21) is provided on a side of the second substrate (12) remote from the first liquid crystal layer (13);
and/or the oxide transreflective film (21) is provided on a side of the second substrate (12) facing the first liquid crystal layer (13).
6. The viewing angle switchable display panel according to claim 1, wherein the viewing angle auxiliary electrode (111) is a planar electrode entirely covering the first substrate (11), and the viewing angle control electrode (121) is a planar electrode entirely covering the second substrate (12).
7. The viewing-angle switchable display panel according to claim 6, wherein a bump structure layer (22) is provided on the second substrate (12), a plurality of second bump structures are provided on the bump structure layer (22), and the oxide transflective film (21) covers the bump structure layer (22) and forms the first bump structures in regions corresponding to the second bump structures.
8. The viewing-angle switchable display panel according to claim 6, wherein a side of the oxide transflective film (21) remote from the second substrate (12) is provided with a planar layer (23).
9. The display panel with switchable viewing angles according to any one of claims 1 to 8, wherein a first polarizer (51) is arranged between the light regulating box (10) and the display liquid crystal box (30), a second polarizer (52) is arranged on one side of the display liquid crystal box (30) away from the light regulating box (10), a third polarizer (53) is arranged on one side of the light regulating box (10) away from the display liquid crystal box (30), light transmission axes of the first polarizer (51) and the second polarizer (52) are mutually perpendicular, and the light transmission axes of the third polarizer (53) and the first polarizer (51) are mutually parallel.
10. A display device comprising a switchable viewing angle display panel as claimed in any one of claims 1 to 9.
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| CN202321569375.0U CN220020053U (en) | 2023-06-19 | 2023-06-19 | Display panel with switchable viewing angles and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117529184A (en) * | 2023-12-06 | 2024-02-06 | 惠科股份有限公司 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117529184A (en) * | 2023-12-06 | 2024-02-06 | 惠科股份有限公司 | Display panel and display device |
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