CN116634812A - Display panel and display device - Google Patents
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- CN116634812A CN116634812A CN202310634543.8A CN202310634543A CN116634812A CN 116634812 A CN116634812 A CN 116634812A CN 202310634543 A CN202310634543 A CN 202310634543A CN 116634812 A CN116634812 A CN 116634812A
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- 239000000919 ceramic Substances 0.000 claims abstract description 164
- 239000000758 substrate Substances 0.000 claims abstract description 80
- 238000005452 bending Methods 0.000 claims abstract description 16
- 230000005684 electric field Effects 0.000 claims description 17
- 239000003086 colorant Substances 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 224
- 238000005538 encapsulation Methods 0.000 description 19
- 230000002265 prevention Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 244000144985 peep Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 208000008918 voyeurism Diseases 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/123—Connection of the pixel electrodes to the thin film transistors [TFT]
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application belongs to the field of display, and particularly relates to a display panel and a display device, wherein the display panel comprises a substrate base plate and a pixel structure layer formed on one side of the substrate base plate, the pixel structure layer comprises a plurality of sub-pixels, the display panel further comprises a light-transmitting structure layer and a peep-proof structure layer, the light-transmitting structure layer is arranged on one side of the pixel structure layer far away from the substrate base plate at intervals, the peep-proof structure layer is arranged between the pixel structure layer and the light-transmitting structure layer, the peep-proof structure layer comprises a plurality of reflecting ceramic plates, the reflecting ceramic plates are at least arranged on one side of each sub-pixel in the row direction or the column direction, and the visual angle of the same sub-pixel in a bending state is smaller than that in a straightening state. By controlling the reflecting ceramic plate, the visual angle of emergent rays of the sub-pixels can be controlled, so that the switching between a wide visual angle mode and a peep-proof mode is realized, and the problem that the peep-proof mode is inconvenient to switch is solved.
Description
Technical Field
The application belongs to the field of display, and particularly relates to a display panel and a display device.
Background
An Organic Light-Emitting Diode (OLED) display panel does not need a backlight source, has the advantages of being flexible, thin in thickness, high in brightness, low in power consumption, fast in response, wide in color gamut and the like, and is widely used in electronic products such as televisions, mobile phones and notebooks.
The active light emitting characteristic of the organic light emitting diode enables the OLED display panel to have a wider viewing angle, and the viewing angle can reach 170 degrees generally. The display panel has a wider viewing angle, which can bring better visual experience to users, but sometimes users also want the viewing angle of the display panel to be adjustable, so that business confidentiality and personal privacy are effectively protected.
The existing OLED display panel can only be torn away from the peep-proof film when the peep-proof film is not needed, and the peep-proof function is inconvenient to switch. In addition, the peep-proof angle and the peep-proof degree of the peep-proof film are limited, the peep-proof film cannot be adjusted variably, and meanwhile, the peep-proof film can cause great loss of light efficiency and increase of power consumption.
Disclosure of Invention
The application aims to provide a display panel and a display device, which are used for solving the problem that a peep-proof mode switch is inconvenient.
In order to achieve the above object, the present application provides a display panel including a substrate and a pixel structure layer formed on one side of the substrate, the pixel structure layer including a plurality of sub-pixels of different colors, the display panel further including:
the light-transmitting structure layer is arranged on one side, far away from the substrate, of the pixel structure layer, and the light-transmitting structure layer and the pixel structure layer form a space;
the peep-proof structure layer is arranged between the pixel structure layer and the light-transmitting structure layer, the peep-proof structure layer comprises a plurality of reflecting ceramic plates, the reflecting ceramic plates are at least arranged on one side of each sub-pixel in the row direction or the column direction, each reflecting ceramic plate has a straightening state and a bending state, and the viewing angle of the same sub-pixel in the bending state is smaller than that in the straightening state.
Optionally, the reflective ceramic plates are disposed on two opposite sides of the corresponding sub-pixels in the row direction and the column direction, and encircle the corresponding sub-pixels.
Optionally, the reflective ceramic sheet includes a piezoelectric ceramic sheet, a reflective layer and a transparent electrode, where the piezoelectric ceramic sheet has opposite inner and outer sides, the inner side of the piezoelectric ceramic sheet is opposite to the corresponding sub-pixel, the transparent electrode is formed on the inner and outer sides of the piezoelectric ceramic sheet, and the reflective layer is formed at least on the inner side of the piezoelectric ceramic sheet.
Optionally, at least one group of transparent electrodes is arranged in the middle of the piezoelectric ceramic plate, and the transparent electrodes apply an outward electric field to make the middle of the piezoelectric ceramic plate bulge outwards away from the corresponding sub-pixels; or (b)
At least one group of transparent electrodes are arranged in the middle of the piezoelectric ceramic plate, at least one group of transparent electrodes are arranged at the upper end of the piezoelectric ceramic plate, which is close to the light-transmitting structure layer, at least one group of transparent electrodes are arranged at the lower end of the piezoelectric ceramic plate, which is far away from the light-transmitting structure layer, and a plurality of groups of transparent electrodes apply inward electric fields with different intensities, so that the middle of the piezoelectric ceramic plate protrudes outwards to be far away from the corresponding sub-pixels.
Optionally, the display panel further includes a spacer column disposed between the pixel structure layer and the light-transmitting structure layer, so that the light-transmitting structure layer and the pixel structure layer form a space, the spacer column is located between adjacent sub-pixels and outside the reflective ceramic sheet, and the height of the spacer column is greater than the height of the reflective ceramic sheet in the straightened state.
Optionally, the reflective ceramic sheet is disposed on the light-transmitting structural layer, and the pixel structural layer and the reflective ceramic sheet form a space.
Optionally, the reflective ceramic sheet is disposed on the pixel structural layer, and the light-transmitting structural layer and the reflective ceramic sheet form a space.
Optionally, the pixel structure layer includes an anode layer, a pixel definition layer, a light emitting layer and a cathode layer formed in sequence, the anode layer is located at one side of the substrate, the anode layer includes a plurality of anodes, the pixel definition layer includes a pixel opening area, the light emitting layer includes a plurality of display light emitting parts with different colors, the display light emitting parts are at least arranged in the pixel opening area and connected with the anodes, the sub-pixels include the display light emitting parts, and the cathode layer covers the pixel definition layer and the display light emitting parts;
the display panel further comprises a packaging layer and a fixing seat, wherein the packaging layer is formed on one side, far away from the substrate, of the cathode layer, the fixing seat is buried in the packaging layer, and the reflecting ceramic plate is connected with the fixing seat.
Optionally, the pixel structure layer includes pixel electrode layer, liquid crystal layer, public electrode layer, look and hinder layer, black matrix and transparent substrate, the pixel electrode layer sets up substrate one side, the liquid crystal layer sets up the pixel electrode layer is kept away from substrate one side, the public electrode layer sets up the liquid crystal layer is kept away from substrate one side, look hinder layer sets up public electrode layer is kept away from substrate one side, look hinder layer includes the look of a plurality of different colours and hinder, black matrix sets up between adjacent look hinder, transparent substrate sets up look hinder layer is kept away from substrate one side, sub-pixel includes look hinder, reflective ceramic sheet sets up transparent substrate is kept away from substrate one side.
The present application also provides a display device including:
the display panel;
and the main board is connected with the display panel.
The display panel and the display device disclosed by the application have the following beneficial effects:
in the application, the pixel structure layer is formed on one side of the substrate, the pixel structure layer comprises a plurality of sub-pixels with different colors, the light-transmitting structure layer is arranged on one side of the pixel structure layer far away from the substrate, the light-transmitting structure layer and the pixel structure layer form a space, the peep-proof structure layer is arranged between the pixel structure layer and the light-transmitting structure layer, the peep-proof structure layer comprises a plurality of reflecting ceramic plates, the reflecting ceramic plates have a straightening state and a bending state, and the visual angle of the same sub-pixel in the bending state is smaller than that in the straightening state. By controlling the reflecting ceramic plate, the visual angle of emergent rays of the sub-pixels can be controlled, so that the switching between a wide visual angle mode and a peep-proof mode is realized, and the problem that the peep-proof mode is inconvenient to switch is solved.
Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a display panel according to a first embodiment of the application.
FIG. 2 is a schematic view showing bending of a reflective ceramic sheet according to a first embodiment of the present application.
Fig. 3 is a schematic view showing a wide viewing angle of a display panel according to a first embodiment of the present application.
Fig. 4 is a schematic view showing a display panel with a narrow viewing angle according to a first embodiment of the application.
Fig. 5 is a schematic structural diagram of a reflective ceramic sheet according to a first embodiment of the present application.
Fig. 6 is a schematic view of the reflective ceramic sheet of fig. 5 bent under the action of an electric field.
Fig. 7 is a schematic structural diagram of another reflective ceramic sheet according to the first embodiment of the present application.
Fig. 8 is a schematic view of the reflective ceramic sheet of fig. 7 bent under the action of an electric field.
Fig. 9 is a schematic structural diagram of a display panel according to a second embodiment of the application.
Fig. 10 is a schematic structural diagram of a display panel according to a third embodiment of the present application.
Fig. 11 is a schematic structural diagram of a display panel according to a fourth embodiment of the present application.
Reference numerals illustrate:
100. a substrate base; 200. a driving circuit layer;
310. an anode layer; 311. an anode; 320. a pixel definition layer; 330. a light emitting layer; 331. a display light emitting section; 340. a cathode layer; 350. an encapsulation layer; 360. a fixing seat; 301. a sub-pixel;
400. an anti-peeping structural layer; 410. a reflective ceramic sheet; 411. a piezoelectric ceramic sheet; 412. a reflective layer; 413. a transparent electrode;
500. spacer posts; 600. a light-transmitting structure layer; 700. a polarizing film;
810. a pixel electrode layer; 820. a liquid crystal layer; 830. a common electrode layer; 840. a color resist layer; 841. color resistance; 850. a black matrix; 860. a transparent substrate;
10. a display panel; 20. and a main board.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The application will be described in further detail with reference to the drawings and the specific examples. It should be noted that the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
Example 1
Referring to fig. 1 and 2, the display panel in this embodiment includes a substrate base 100 and a pixel structure layer formed on one side of the substrate base 100. The substrate 100 may include a glass substrate, a polyimide substrate, and the like. The pixel structure layer includes a plurality of sub-pixels 301 of different colors, and the sub-pixels 301 of different colors may include red sub-pixels 301, green sub-pixels 301, and blue sub-pixels 301 to implement RGB display. The arrangement of the sub-pixels 301 of different colors is not limited to the illustrated RGB arrangement.
The display panel further includes a light transmissive structural layer 600 and a privacy structural layer 400. The light-transmitting structure layer 600 is disposed on a side of the pixel structure layer away from the substrate 100, and the light-transmitting structure layer 600 and the pixel structure layer form a space. The light transmissive structural layer 600 may be a glass or organic layer. The peep-proof structure layer 400 is disposed between the pixel structure layer and the light-transmitting structure layer 600. The peep-proof structure 400 includes a plurality of reflective ceramic plates 410, and the reflective ceramic plates 410 are capable of bending and reflecting light. The reflective ceramic sheet 410 is disposed at least at one side of each sub-pixel 301 in the row direction or the column direction. For example, one side of each sub-pixel 301 in the row direction or the column direction is provided with a reflective ceramic sheet 410, two reflective ceramic sheets 410 are respectively disposed on two opposite sides of each sub-pixel 301 in the row direction, one reflective ceramic sheet 410 is respectively disposed on two opposite sides of each sub-pixel 301 in the column direction, or one reflective ceramic sheet 410 is respectively disposed on two opposite sides of each sub-pixel 301 in the row direction and two opposite sides of each sub-pixel 301 in the column direction.
The reflective ceramic sheet 410 corresponds to the sub-pixel 301, and the side of the reflective ceramic sheet 410 close to the sub-pixel 301 is defined as the inner side, and the side of the reflective ceramic sheet 410 away from the sub-pixel 301 is defined as the outer side. The reflective ceramic sheet 410 has a straightened state in which the middle of the reflective ceramic sheet 410 bulges outwardly away from its corresponding sub-pixel 301 and a bent state in which the reflective ceramic sheet 410 is approximately perpendicular to the substrate 100.
The viewing angle of the same subpixel in the curved state is smaller than in the straightened state.
Specifically, referring to fig. 3, in the straightened state of the reflective ceramic sheet 410, the reflective ceramic sheet 410 is irradiated by the light emitted by the sub-pixel 301 from all directions, the reflective ceramic sheet 410 directly reflects the light, and the light higher than the reflective ceramic sheet 410 directly exits from the top, so that the diffusion angle of the light reflected by the reflective ceramic sheet 410 is larger, and the viewing angle of the sub-pixel is also larger, i.e. the display panel displays with a wide viewing angle. The reflective ceramic sheet 410 reflects light without losing light intensity.
Referring to fig. 4, in the curved state of the reflective ceramic sheet 410, the reflective ceramic sheet 410 is irradiated by the light emitted by the sub-pixel 301 from all directions, and most of the light is reflected back to the pixel opening area due to the outward protrusion of the middle of the reflective ceramic sheet 410, so that the diffusion angle of the light reflected by the reflective ceramic sheet 410 is smaller, and the viewing angle of the sub-pixel is smaller, i.e. the display panel is displaying at a narrow viewing angle. The display panel is a narrow visual angle display, and can be peeped. The reflective ceramic sheet 410 reflects light without losing light intensity and also increases the contrast of the pixel opening area.
One side of each sub-pixel 301 in the row direction or the column direction is provided with a reflective ceramic plate 410, and the display panel can realize single-side peep prevention. The unilateral peep-proof display panel can be used for a copilot screen to prevent peeping of a main driving side and avoid interference of the copilot screen with a driver. Two reflective ceramic plates 410 are respectively arranged at two opposite sides of each sub-pixel 301 in the row direction, or one reflective ceramic plate 410 is respectively arranged at two opposite sides of each sub-pixel 301 in the column direction, so that the display panel can realize two-side peeping prevention, and the display panel can be used for televisions, displays and the like. The two opposite sides of each sub-pixel 301 in the row direction and the two opposite sides in the column direction are respectively provided with a reflective ceramic plate 410, the display panel can realize peripheral peep prevention, and the display panel can be used for mobile phones, notebook computers and the like.
In this embodiment, the pixel structure layer is formed on one side of the substrate 100, the pixel structure layer includes a plurality of sub-pixels 301 with different colors, the transparent structure layer 600 is disposed on one side of the pixel structure layer away from the substrate 100, the transparent structure layer 600 and the pixel structure layer form a space, the peep-proof structure layer 400 is disposed between the pixel structure layer and the transparent structure layer 600, the peep-proof structure layer 400 includes a plurality of reflective ceramic plates 410, the reflective ceramic plates 410 have a straightened state and a curved state, in the curved state, the middle of the reflective ceramic plates 410 protrudes outwards away from their corresponding sub-pixels 301, and the viewing angle of the same sub-pixel in the curved state is smaller than that in the straightened state. By controlling the reflective ceramic sheet 410, the viewing angle of the light emitted by the sub-pixel 301 can be controlled, so that the switching between the wide viewing angle mode and the peep-proof mode is realized, and the problem of inconvenient switching of the peep-proof mode is solved.
In addition, the light intensity of the light reflected by the reflective ceramic sheet 410 is not lost, and compared with the peep-proof film, the loss of light efficiency and the increase of power consumption can be avoided.
For example, the reflective ceramic sheets 410 are disposed on opposite sides of the corresponding sub-pixels 301 in the row direction and the column direction, surrounding the corresponding sub-pixels 301.
The reflective ceramic sheet 410 surrounds the corresponding sub-pixels 301, and the display panel can realize peripheral peep prevention, so that the peep prevention effect is better.
Referring to fig. 5, the reflective ceramic sheet 410 includes a piezoelectric ceramic sheet 411, a reflective layer 412, and a transparent electrode 413. The piezoelectric ceramic sheet 411 has opposite inner and outer sides, and the inner side of the piezoelectric ceramic sheet 411 is opposite to its corresponding sub-pixel 301. Transparent electrodes 413 are formed on the inner and outer sides of the piezoelectric ceramic sheet 411, and a reflective layer 412 is formed at least on the inner side of the piezoelectric ceramic sheet 411 and between the piezoelectric ceramic sheet 411 and the transparent electrodes 413. In the present embodiment, the reflection layer 412 is formed on the inner and outer sides of the piezoelectric ceramic sheet 411.
Transparent in the present application is understood to mean transparent through which light can pass, not without any color.
The piezoelectric ceramic sheet 411 is made of piezoelectric ceramics. The piezoelectric ceramic is an information functional ceramic material capable of mutually converting mechanical energy and electric energy, and has unique properties such as piezoelectricity, dielectric property, elasticity and the like. The elastic coefficient of piezoelectric ceramics is a parameter reflecting the relationship between deformation and acting force of ceramics. The piezoelectric ceramic material, like other elastomers, follows hooke's law: f= -Kx, where K is called the elastic hardness constant of the elastomer, F is stress, and x is strain. The driving voltage and displacement of the piezoelectric ceramic are in a linear relationship, that is, the larger the voltage is, the larger the displacement is, within the maximum voltage the piezoelectric ceramic is subjected to.
The reflective layer 412 may be a metal reflective layer or a non-metal reflective layer, and the transparent electrode 413 may be an Indium Tin Oxide (ITO) electrode. When the reflective layer 412 is a metal reflective layer, the transparent electrode 413 and the reflective layer 412 may be further provided with an insulating layer.
The reflective ceramic sheet 410 includes a piezoelectric ceramic sheet 411, a reflective layer 412 and a transparent electrode 413, wherein the piezoelectric ceramic sheet 411 can be bent under the action of an electric field, the transparent electrode 413 is disposed on the inner and outer sides of the piezoelectric ceramic sheet 411 to provide the electric field for bending the piezoelectric ceramic sheet 411, and the reflective layer 412 is disposed at least on the inner side of the piezoelectric ceramic sheet 411 and is used for reflecting light emitted by the sub-pixel 301.
The transparent electrode 413 may be disposed on the inner and outer sides of the piezoelectric ceramic sheet 411, but the present application is not limited thereto, and the transparent electrode 413 may be disposed on the front and rear sides or the upper and lower sides of the piezoelectric ceramic sheet 411 as long as the piezoelectric ceramic sheet 411 can be bent, and the specific case may be. The reflective layer 412 may be disposed between the transparent electrode 413 and the piezoelectric ceramic sheet 411, but is not limited thereto, and the positions of the reflective layer 412 and the transparent electrode 413 may be interchanged as appropriate.
Referring to fig. 5, at least one group of transparent electrodes 413 is disposed at the middle of the piezoelectric ceramic sheet 411, and the transparent electrodes 413 apply an outward electric field to make the middle of the piezoelectric ceramic sheet 411 protrude outward away from its corresponding sub-pixel 301.
Referring to fig. 6, the transparent electrode 413 generates a leftward electric field E1, the middle portion of the piezoelectric ceramic sheet 411 protrudes leftward, and the opposite electric field is applied to restore the deformation. The electric field is applied by deformation at the intermediate position, so that the deformation at the upper and lower ends is theoretically mirror-symmetrical.
At least one group of transparent electrodes 413 is arranged in the middle of the piezoelectric ceramic plate 411, so that the middle of the piezoelectric ceramic plate 411 protrudes outwards to be far away from the corresponding sub-pixels 301, fewer transparent electrodes 413 are needed, and electrode wiring is reduced.
In some embodiments, as shown in fig. 7, at least one set of transparent electrodes 413 is disposed in the middle of the piezoelectric ceramic sheet 411, at least one set of transparent electrodes 413 is disposed at the upper end of the piezoelectric ceramic sheet 411 near the transparent structural layer 600, and at least one set of transparent electrodes 413 is disposed at the lower end of the piezoelectric ceramic sheet 411 away from the transparent structural layer 600. The multiple sets of transparent electrodes 413 apply inward electric fields with different intensities, so that the middle part of the piezoelectric ceramic piece 411 protrudes outwards away from the corresponding sub-pixel 301.
Referring to fig. 8, at least three groups of transparent electrodes 413 are arranged from top to bottom, the three groups of transparent electrodes 413 apply different electric field intensities E1, E2 and E3 according to the target deformation degree at the position, the electric field directions of the three groups of electrodes are all from left to right, the generated stress directions are also rightward, thereby rightward deformation is generated, such as the deformation of the right graph in fig. 8, and the opposite electric field is applied to restore the deformation.
The bending deformation of the piezoelectric ceramic sheet 411 is controlled by the plurality of transparent electrodes 413, and the bending deformation degree of the piezoelectric ceramic sheet 411 is controlled more accurately.
Since the bending degree of the piezoelectric ceramic sheet 411 can be controlled by an electric field, the deformation amount of the piezoelectric ceramic sheet 411 can be changed by adjusting the voltage applied to the piezoelectric ceramic sheet 411, and the deformation amount of the piezoelectric ceramic sheet 411 can be changed to change the emergent angle of incident light, and meanwhile, the deformation amount is reversible, so that the dynamic regulation and control of the visual angle can be realized, and the dynamic peeping prevention effect can be achieved.
In addition, the transparent electrodes 413 corresponding to the different sub-pixels 301 can be synchronously controlled to realize full-screen overall peep prevention, but the method is not limited thereto, and the transparent electrodes 413 corresponding to the different sub-pixels 301 can also be independently controlled to realize partition peep prevention, and the specific situation can be determined according to the situation.
Referring to fig. 1, the display panel further includes a spacer pillar 500 disposed between the pixel structure layer and the light-transmitting structure layer 600 such that the light-transmitting structure layer 600 and the pixel structure layer form a space. The spacer column 500 can bear a certain pressing force, and can provide a movable space for bending and straightening the reflective ceramic sheet 410. The spacer 500 is located between the adjacent sub-pixels 301 and outside the reflective ceramic sheet 410, and the height of the spacer 500 is greater than the height of the reflective ceramic sheet 410 in the straightened state. The height of the reflective ceramic sheet 410 is controlled to be within 0.5 mm.
One end of the reflective ceramic sheet 410 is fixed, the other end of the reflective ceramic sheet 410 is a free end, and the height of the spacer pillar 500 is larger than that of the reflective ceramic sheet 410, so that the free end of the reflective ceramic sheet 410 can be prevented from being limited by the space between the pixel structure layer and the light-transmitting structure layer 600.
Note that, the spacer pillar 500 is disposed between the pixel structure layer and the light-transmitting structure layer 600 to form a space between the light-transmitting structure layer 600 and the pixel structure layer, but not limited thereto, and the space between the pixel structure layer and the light-transmitting structure layer 600 may be formed by a frame glue, as the case may be. The height of the spacer 500 is greater than the height of the reflective ceramic sheet 410, but not limited thereto, and the height of the spacer 500 may be equal to the height of the reflective ceramic sheet 410 as the case may be.
Referring to fig. 1, a reflective ceramic sheet 410 is disposed on a pixel structure layer, and a light transmissive structure layer 600 and the reflective ceramic sheet 410 form a space.
The reflective ceramic sheet 410 is disposed on the pixel structure layer, there is no problem in aligning the reflective ceramic sheet 410 with the sub-pixels 301, and the black matrix can be designed to be narrower.
Referring to fig. 1, the pixel structure layer includes an anode layer 310, a pixel defining layer 320, a light emitting layer 330, and a cathode layer 340, which are sequentially formed, the anode layer 310 being located at one side of the substrate 100. The anode layer 310 includes a plurality of anodes 311 arranged at intervals. The pixel defining layer 320 includes a plurality of pixel opening regions, and the pixel opening regions are in one-to-one correspondence with the anode electrodes 311. The light emitting layer 330 includes a plurality of display light emitting portions 331 of different colors, and the display light emitting portions 331 of different colors include a red display light emitting portion 331, a green display light emitting portion 331, and a blue display light emitting portion 331 to realize RGB display. The light emitting layer 330 is made of an organic light emitting material. The display light emitting portion 331 is disposed at least in the pixel opening area and connected to the anode electrode 311. That is, each of the display light emitting parts 331 may be partially located in the pixel opening area and partially located outside the pixel opening area. The sub-pixel 301 includes a display light emitting portion 331. The cathode layer 340 covers the pixel defining layer 320 and the display light emitting portion 331.
The display panel further includes a driving circuit layer 200, and the driving circuit layer 200 is positioned between the anode layer 310 and the substrate 100. The pixel driving circuit of the driving circuit layer 200 controls the display light emitting portion 331 to emit light through the anode electrode 311.
The pixel structure layer includes an anode layer 310, a pixel definition layer 320, a light emitting layer 330, and a cathode layer 340, which are sequentially formed, that is, the display panel may be an OLED display panel, which has the advantages of being flexible, thin, high in brightness, low in power consumption, fast in response, wide in color gamut, and the like.
Referring to fig. 1, the display panel further includes an encapsulation layer 350 and a fixing base 360, the encapsulation layer 350 is formed on a side of the cathode layer 340 away from the substrate 100, the fixing base 360 is embedded in the encapsulation layer 350, and the reflective ceramic sheet 410 is connected to the fixing base 360.
The encapsulation layer 350 may include a first inorganic encapsulation layer and an organic encapsulation layer, wherein the first inorganic encapsulation layer is located at a side close to the cathode layer 340, and the fixing base 360 is embedded in the organic encapsulation layer. The top surface of the holder 360, which is far from the substrate 100, and the top surface of the organic encapsulation layer, which is far from the substrate 100, may be flush, or the holder 360 slightly protrudes the organic encapsulation layer. The encapsulation layer 350 further includes a second inorganic encapsulation layer, when the second inorganic encapsulation layer is located on a side of the organic encapsulation layer away from the substrate 100, the top surface of the fixing base 360 away from the substrate 100 and the top surface of the second inorganic encapsulation layer away from the substrate 100 may be flush, or the fixing base 360 slightly protrudes out of the second inorganic encapsulation layer.
The reflective ceramic sheet 410 is bendable and deformable, the fixing base 360 is not bendable and deformable, the reflective ceramic sheet 410 is disposed on the fixing base 360, and the fixing base 360 can fix the position of the reflective ceramic sheet 410. In addition, the reflective ceramic sheet 410 is disposed on the fixing base 360, so as to prevent the package layer 350 from being damaged due to bending deformation of the reflective ceramic sheet 410, and to affect the package effect of the display panel.
Referring to fig. 1, the display panel further includes a polarizing film 700, and the polarizing film 700 may be disposed at one side of the light transmissive structural layer 600. In this embodiment, the polarizing film 700 is disposed on the side of the light-transmitting structure layer 600 away from the substrate 100. In some embodiments, the polarizing film 700 may also be disposed on the side of the transparent structural layer 600 near the substrate 100, where appropriate.
The polarizing film 700 can effectively reduce the reflection intensity of external environment light on a screen, improve the contrast of a display panel and realize an integral black effect.
It should be noted that the display panel may include the polarizing film 700, but not limited thereto, and the display panel may also include a color resist layer including a plurality of color resists of different colors and a black matrix disposed between adjacent color resists. The plurality of different colored resistors includes a red resistor, a green resistor and a blue resistor. Orthographic projection of the red display light-emitting portion 331 in the color resist layer is in the red color resist, orthographic projection of the green display light-emitting portion 331 in the color resist layer is in the green color resist, orthographic projection of the blue display light-emitting portion 331 in the color resist layer is in the blue-red color resist. That is, the display panel adopts a COE (Color filter On Encapsulation, color film on package) structure.
The polarized film 700 can effectively reduce the reflection intensity of the external environment light on the screen, but the light transmittance of the polarized film 700 is generally only about 44%, so that more power consumption is required to achieve higher light-emitting brightness. In addition, the polaroid has larger thickness and crisp material, and is not beneficial to the development of dynamic bending products.
The COE structure is adopted, the polaroid of the OLED display panel can be omitted, the thickness of the functional layer is greatly reduced, the light-emitting rate can be improved from 44% to 80%, the light-emitting brightness is greatly increased, and therefore the power consumption of the OLED display panel is reduced.
It should be noted that, in the present embodiment, the peep-proof structure layer 400 is disposed on the encapsulation layer 350, and the actual peep-proof structure layer 400 may be disposed on any layer above the light-emitting layer 330. In this embodiment, only the display panel with the top surface emitting light is illustrated, and for the display panel with the bottom surface emitting light, the peep-proof structure layer 400 is disposed on the light emitting side of the light emitting layer 330 to realize peep-proof.
Example two
The main difference between the second embodiment and the first embodiment is that the reflective ceramic sheet 410 is fixed in a different manner.
Referring to fig. 9, a reflective ceramic sheet 410 is disposed on a light transmissive structural layer 600, and a pixel structural layer is spaced apart from the reflective ceramic sheet 410.
The reflective ceramic sheet 410 is disposed on the light-transmitting structure layer 600, and the light-transmitting structure layer 600 and the substrate 100 are assembled to form a display panel, so that the manufacturing process of the display panel is simpler.
Example III
The difference between the third embodiment and the second embodiment is that the pixel structure layer is different.
Referring to fig. 10, the pixel structure layer includes a pixel electrode layer 810, a liquid crystal layer 820, a common electrode layer 830, a color resist layer 840, a black matrix 850, and a transparent substrate 860. The pixel electrode layer 810 is disposed on one side of the substrate 100, and the pixel electrode layer 810 includes a plurality of pixel electrodes disposed at intervals. The liquid crystal layer 820 is disposed on a side of the pixel electrode layer 810 remote from the substrate 100. The common electrode layer 830 is disposed on a side of the liquid crystal layer 820 remote from the substrate 100. The color resist layer 840 is disposed on a side of the common electrode layer 830 away from the substrate 100. The color resist layer 840 includes a plurality of color resists 841 of different colors, and the black matrix 850 is disposed between adjacent color resists 841. The transparent substrate 860 is disposed on a side of the color resist layer 840 away from the substrate 100. The transparent substrate 860 may be a glass substrate. The sub-pixel 301 includes a color resistor 841, and a reflective ceramic sheet 410 is disposed on a side of the transparent substrate 860 remote from the substrate 100.
The display panel further includes a driving circuit layer 200, and the driving circuit layer 200 is disposed between the pixel electrode layer 810 and the substrate 100. The display panel is a liquid crystal display panel, and the liquid crystal display panel includes an array substrate and a counter substrate, wherein the array substrate is formed by the substrate 100, the driving circuit layer 200 and the pixel electrode layer 810, and the counter substrate is formed by the common electrode layer 830, the color resistance layer 840, the black matrix 850 and the transparent substrate 860.
The display panel comprises a liquid crystal display panel, and the liquid crystal display panel has the advantages of light weight, energy conservation, high display quality, mature and stable manufacturing process and the like.
It should be noted that, in this embodiment, only the peep-proof structure layer 400 is disposed on the transparent substrate 860, and the actual peep-proof structure layer 400 may be disposed between the substrate 100 and the transparent structure layer 600. The color resist layer 840 may be disposed on a side of the common electrode layer 830 away from the substrate 100, but not limited thereto, and the color resist layer 840 may also be disposed on the array substrate, i.e. using COA (Color Filter on Array, color film on the array substrate) technology, as the case may be.
Example IV
Referring to fig. 11, the display device of the present embodiment includes a display panel 10 and a main board 20, and the main board 20 is connected to the display panel 10. The display panel 10 includes the display panels disclosed in the first to third embodiments.
The display device includes a display panel 10, in which a pixel structure layer is formed on one side of a substrate 100 in the display panel 10, the pixel structure layer includes a plurality of sub-pixels 301 with different colors, a light-transmitting structure layer 600 is disposed on one side of the pixel structure layer away from the substrate 100, the light-transmitting structure layer 600 and the pixel structure layer form a space, a peep-proof structure layer 400 is disposed between the pixel structure layer and the light-transmitting structure layer 600, the peep-proof structure layer 400 includes a plurality of reflective ceramic sheets 410, the reflective ceramic sheets 410 have a straightened state and a curved state, in the curved state, the middle of the reflective ceramic sheets 410 protrudes outwards away from their corresponding sub-pixels 301, and the viewing angle of the same sub-pixel in the curved state is smaller than that in the straightened state. By controlling the reflective ceramic sheet 410, the viewing angle of the light emitted by the sub-pixel 301 can be controlled, so that the switching between the wide viewing angle mode and the peep-proof mode is realized, and the problem of inconvenient switching of the peep-proof mode is solved.
The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, reference to the terms "some embodiments," "exemplary," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present application have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made in the above embodiments by those skilled in the art within the scope of the application, which is therefore intended to be covered by the appended claims and their equivalents.
Claims (10)
1. A display panel comprising a substrate and a pixel structure layer formed on one side of the substrate, the pixel structure layer comprising a plurality of sub-pixels of different colors, the display panel further comprising:
the light-transmitting structure layer is arranged on one side, far away from the substrate, of the pixel structure layer, and the light-transmitting structure layer and the pixel structure layer form a space;
the peep-proof structure layer is arranged between the pixel structure layer and the light-transmitting structure layer, the peep-proof structure layer comprises a plurality of reflecting ceramic plates, the reflecting ceramic plates are at least arranged on one side of each sub-pixel in the row direction or the column direction, each reflecting ceramic plate has a straightening state and a bending state, and the viewing angle of the same sub-pixel in the bending state is smaller than that in the straightening state.
2. The display panel of claim 1, wherein the reflective ceramic sheets are disposed on opposite sides of the corresponding sub-pixels in the row and column directions, surrounding the corresponding sub-pixels.
3. The display panel according to claim 1 or 2, wherein the reflective ceramic sheet includes a piezoelectric ceramic sheet having opposite inner and outer sides, the inner side of the piezoelectric ceramic sheet being opposite to the sub-pixels corresponding thereto, a reflective layer formed on the inner and outer sides of the piezoelectric ceramic sheet, and a transparent electrode formed at least on the inner side of the piezoelectric ceramic sheet.
4. A display panel according to claim 3, wherein at least one group of transparent electrodes is arranged in the middle of the piezoelectric ceramic plate, and the transparent electrodes apply an outward electric field to cause the middle of the piezoelectric ceramic plate to bulge outwards away from the corresponding sub-pixels; or (b)
At least one group of transparent electrodes are arranged in the middle of the piezoelectric ceramic plate, at least one group of transparent electrodes are arranged at the upper end of the piezoelectric ceramic plate, which is close to the light-transmitting structure layer, at least one group of transparent electrodes are arranged at the lower end of the piezoelectric ceramic plate, which is far away from the light-transmitting structure layer, and a plurality of groups of transparent electrodes apply inward electric fields with different intensities, so that the middle of the piezoelectric ceramic plate protrudes outwards to be far away from the corresponding sub-pixels.
5. The display panel according to claim 1 or 2, further comprising a spacer column disposed between the pixel structure layer and the light-transmitting structure layer to space the light-transmitting structure layer and the pixel structure layer, the spacer column being located between adjacent sub-pixels and outside the reflective ceramic sheet, and a height of the spacer column being greater than a height of the reflective ceramic sheet in the straightened state.
6. The display panel of claim 5, wherein the reflective ceramic sheet is disposed on the light transmissive structural layer, the pixel structural layer being spaced apart from the reflective ceramic sheet.
7. The display panel of claim 5, wherein the reflective ceramic sheet is disposed on the pixel structure layer, and the light transmissive structure layer and the reflective ceramic sheet form a space.
8. The display panel according to claim 7, wherein the pixel structure layer includes an anode layer, a pixel definition layer, a light emitting layer, and a cathode layer formed in this order, the anode layer is located on one side of the substrate, the anode layer includes a plurality of anodes, the pixel definition layer includes a pixel opening region, the light emitting layer includes a plurality of display light emitting portions of different colors, the display light emitting portions are disposed at least in the pixel opening region and connected to the anodes, the sub-pixels include the display light emitting portions, and the cathode layer covers the pixel definition layer and the display light emitting portions;
the display panel further comprises a packaging layer and a fixing seat, wherein the packaging layer is formed on one side, far away from the substrate, of the cathode layer, the fixing seat is buried in the packaging layer, and the reflecting ceramic plate is connected with the fixing seat.
9. The display panel according to claim 7, wherein the pixel structure layer includes a pixel electrode layer, a liquid crystal layer, a common electrode layer, a color resist layer, a black matrix, and a transparent substrate, the pixel electrode layer is disposed on a side of the substrate, the liquid crystal layer is disposed on a side of the pixel electrode layer away from the substrate, the common electrode layer is disposed on a side of the liquid crystal layer away from the substrate, the color resist layer is disposed on a side of the common electrode layer away from the substrate, the color resist layer includes a plurality of color resists of different colors, the black matrix is disposed between adjacent color resists, the transparent substrate is disposed on a side of the color resist layer away from the substrate, the sub-pixel includes the color resist, and the reflective ceramic sheet is disposed on a side of the transparent substrate away from the substrate.
10. A display device, comprising:
the display panel according to any one of claims 1 to 9;
and the main board is connected with the display panel.
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