CN114512624A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN114512624A CN114512624A CN202210149577.3A CN202210149577A CN114512624A CN 114512624 A CN114512624 A CN 114512624A CN 202210149577 A CN202210149577 A CN 202210149577A CN 114512624 A CN114512624 A CN 114512624A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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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
- H10K59/10—OLED displays
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Abstract
The invention discloses a display panel and a display device, the display panel includes: a substrate; the pixel layer comprises a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, and a pixel defining structure is arranged between the sub-pixels; the liquid lens layer is positioned on one side, far away from the substrate, of the pixel layer and comprises at least one sub-lens, and the orthographic projection of the sub-lens on the substrate at least covers the orthographic projection of one sub-pixel on the substrate. Therefore, the light emitting direction of the pixel layer can be adjusted through the sub-lens, and the display visual angle of the display panel is adjusted.
Description
Technical Field
The present invention relates to the field of display, and in particular, to a display panel and a display device.
Background
With the development of display technology, display panels have undergone a shift from a narrow viewing angle to a wide viewing angle, and display panels with display of nearly 180 ° have appeared in the related art. With the improvement of personal privacy protection awareness of people, a privacy film is correspondingly developed for a large-viewing-angle display device to prevent people other than viewers from observing a display picture. Therefore, in order to meet the requirements of different users, the display device with adjustable viewing angle has attracted attention. However, the existing display panel structure cannot realize effective adjustment of the light emitting direction of the pixel well, and the display effect of the display panel needs to be improved.
Therefore, the current display panel and display device still need to be improved.
Disclosure of Invention
The present invention is based on the discovery and recognition by the inventors of the following facts and problems:
the inventors found that the display panel in the related art has the following problems: firstly, different users have different requirements for the display device, and the display device with a single display viewing angle cannot completely meet the requirements of the users; secondly, most of the time, the viewer is just looking through the display device, at this time, the light scattered towards a large viewing angle is not captured by human eyes, the light emitted by the OLED device is actually received by the human eyes less, and the light-emitting utilization rate of the OLED device is lower.
The present invention aims to alleviate or solve at least to some extent at least one of the above mentioned problems.
In one aspect of the present invention, the present invention provides a display panel including: a substrate; the pixel layer comprises a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, and a pixel defining structure is arranged between the sub-pixels; the liquid lens layer is positioned on one side, far away from the substrate, of the pixel layer and comprises at least one sub-lens, and the orthographic projection of the sub-lens on the substrate at least covers the orthographic projection of one sub-pixel on the substrate. Therefore, the light emitting direction of the pixel layer can be adjusted through the sub-lens, and the display visual angle of the display panel is adjusted.
According to an embodiment of the present invention, in a direction of the substrate toward the pixel layer, the sub-lens includes: a first liquid layer; a second liquid layer on one side of the first liquid layer; a liquid lens encapsulation layer located on a side of the second liquid layer remote from the first liquid layer, an orthographic projection of the second liquid layer on the substrate being located inward of an orthographic projection of the liquid lens encapsulation layer on the substrate; an electrode layer disposed around the sub-lens, the electrode layer in contact with both the first liquid layer and the second liquid layer. Thereby, the sub-lenses can be made to achieve optical zooming by applying a voltage.
According to an embodiment of the invention, the liquid lens layer comprises a plurality of said sub-lenses, an orthographic projection of each of said sub-lenses on said substrate covering an orthographic projection of one of said sub-pixels on said substrate. Therefore, the light emitting direction of each sub-pixel can be accurately regulated and controlled.
According to an embodiment of the present invention, further comprising: and the electrode layers of the sub lenses are electrically connected with the common electrode. Therefore, the synchronous regulation and control of the plurality of sub-pixels to have the same light emitting direction can be facilitated.
According to an embodiment of the invention, the refractive index of the first liquid layer is smaller than the refractive index of the second liquid layer. Thus, the sub-lens can be made to have a narrow viewing angle adjustment function.
According to an embodiment of the invention, the first solution forming the first liquid layer is immiscible with the second solution forming the second liquid layer. Thereby, a stable sub-lens structure may be facilitated to be formed.
According to an embodiment of the invention, the first solution forming the first liquid layer is a conducting solution and the second solution forming the second liquid layer is a non-conducting solution. Thus, the radius of curvature of the lens can be changed by applying an applied voltage.
According to an embodiment of the present invention, further comprising: the packaging layer is positioned on one side, far away from the substrate, of the pixel layer; the black matrix layer is positioned on one side, far away from the pixel layer, of the packaging layer, and the orthographic projection of the black matrix layer on the substrate is positioned inside the orthographic projection of the pixel defining structure on the substrate; the black matrix layer is provided with a plurality of black matrix grooves, the sub-lenses are positioned in the black matrix grooves, and the electrode layer is arranged on the side walls of the black matrix grooves. Thus, the liquid lens layer can be provided by a relatively simple method.
According to an embodiment of the invention, the refractive index of the second liquid layer is larger than the refractive index of the encapsulation layer, the refractive index of the encapsulation layer is larger than the refractive index of the first liquid layer, the refractive index of the first liquid layer is larger than the refractive index of the liquid lens encapsulation layer. Therefore, the sub-lens has a wide viewing angle regulation function.
According to an embodiment of the present invention, further comprising: the packaging layer is positioned on one side, far away from the substrate, of the pixel layer; the touch electrode layer is positioned on one side, far away from the pixel layer, of the packaging layer; the isolating layer is positioned on one side, far away from the packaging layer, of the touch electrode layer; the isolation matrix layer is positioned on one side, away from the touch electrode layer, of the isolation layer, and the orthographic projection of the isolation matrix layer on the substrate is positioned inside the orthographic projection of the pixel definition structure on the substrate; the isolation matrix layer is provided with a plurality of isolation matrix grooves, the sub-lenses are located in the isolation matrix grooves, and the electrode layers are arranged on the side walls of the isolation matrix grooves. Thus, the liquid lens layer can be provided by a relatively simple method.
According to an embodiment of the invention, the refractive index of the second liquid layer is larger than the refractive index of the separation layer, the refractive index of the separation layer is larger than the refractive index of the first liquid layer, the refractive index of the first liquid layer is larger than the refractive index of the liquid lens encapsulation layer. Therefore, the sub-lens has a wide viewing angle regulation function.
In another aspect of the present invention, the present invention provides a display device, including the aforementioned display panel. Therefore, the display device has all the features and advantages of the display panel, and the description thereof is omitted.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display panel according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of a display panel according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a display panel according to another embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a partial structure of a display panel according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a partial structure of a display panel according to another embodiment of the present invention;
FIG. 7 illustrates a schematic diagram of the focusing principle of the sub-lens according to one embodiment of the present invention;
FIG. 8 shows an enlarged partial view of FIG. 7 at the dashed box;
FIG. 9 shows a schematic view of the focusing principle of a sub-lens according to yet another embodiment of the present invention;
fig. 10 shows a partial enlarged view of fig. 9 at the dashed box.
Description of reference numerals:
100: a substrate; 210: a sub-pixel; 220: a pixel defining structure; 300: a packaging layer; 310: a black matrix; 410: a first liquid layer; 420: a second liquid layer; 430: a liquid lens encapsulation layer; 440: an electrode layer; 441: a common electrode; 500: a touch electrode layer; 600: an isolation layer; 610: an isolation matrix;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In one aspect of the present invention, the present invention provides a display panel, referring to fig. 1, including: a substrate 100; the pixel layer comprises a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels 210, and pixel defining structures 220 are arranged among the sub-pixels 210; and the liquid lens layer is positioned on one side of the pixel layer far away from the substrate 100, the liquid lens layer comprises at least one sub-lens, and the orthographic projection of the sub-lens on the substrate 100 at least covers the orthographic projection of one sub-pixel 210 on the substrate 100. When light emitted by the pixel layer passes through the lens layer, the curvature radius of the lens layer can be changed by applying voltage to the lens layer, so that the adjustment of the light emitting direction of the pixel is realized, and under the condition of not needing to be provided with mechanical parts, the automatic focusing and zooming are realized by adjusting the voltage, so that the purpose of adjusting the visual angle of the display panel is achieved.
For ease of understanding, the following is a brief description of the principle of the display panel in the present application having the above-described advantageous effects:
in the present application, the inventor finds that, by adding an electrically controlled focusing optical liquid lens above a pixel structure, the light emitting direction of a pixel can be adjusted by utilizing the characteristics of small volume, fast response time, simple structure and suitability for optical zooming in a small-scale space of the liquid lens. In particular, liquid lenses are optical lenses that utilize the principle of dielectric electrowetting to achieve zooming. Referring to fig. 1, the liquid lens may include a first liquid layer 410, a second liquid layer 420, and an electrode layer 440 in contact with both the first liquid layer 410 and the second liquid layer 420. The sub-lens dimming principle in the present application is explained by taking as an example that the solutions forming the first liquid layer and the second liquid layer are two liquids which have different refractive indexes and are not mixed, the first solution forming the first liquid layer is a conductive aqueous solution, and the second solution forming the second liquid layer is a non-conductive oily solution:
the aqueous solution and the oily solution are mutually insoluble, and the refractive index of the oily solution is larger than that of the aqueous solution. The interface between the first liquid layer and the second liquid layer is under surface tension when no voltage is applied to the liquid lensA layer of symmetrical lens film is naturally formed under the interaction, and the focal length of the liquid lens is a fixed value at the moment; when applying voltage to the lens through the electrode layer, referring to fig. 7, under the effect of the electric field, the electric quantity of the contact surface between the first liquid layer 410 and the second liquid layer 420 changes, thereby generating an external force which makes the original surface tension not balanced any more, the contact surface tension between the first liquid layer 410 and the second liquid layer 420 reaches new balance under the action of the external force, the interface of the first liquid layer 410 near one side of the second liquid layer 420 protrudes downwards, the interface of the second liquid layer 420 near one side of the first liquid layer 410 is concave, thereby realizing the change of the curvature radius of the lens, and further changing the focal length of the lens, so that the change of the light path occurs when the light passes through the lens. When the voltages applied to the liquid lenses are different, the surface tensions required for the contact surface between the first liquid and the second liquid to reach a stable state, the contact surface between the first liquid and the lens side wall to reach the stable state and the contact surface between the second liquid and the lens side wall to reach the stable state are different, so that the curvature of the interface between the first liquid and the second liquid is changed by adjusting the applied voltage, the focal length of the liquid lens is further changed, and finally the narrowing of the light-emitting angle range of the sub-pixel 210 is realized. The focal length of the sub-lens in the application is adjusted on the basis of the electrowetting process, and automatic focusing and zooming can be realized by adjusting voltage under the condition that mechanical parts are not prepared, so that the purpose of adjustable visual angle is achieved. Further, referring to FIG. 8 and the law of refractive index, n2sinθ2＝n3sinθ3Wherein n is2Is the refractive index of the first liquid layer, n3The refractive index of the second liquid layer, and it can be seen that n is n by adjusting the refractive index distribution of the liquid lens by voltage3Greater than n2The emergent light of the sub-pixel 210 is emitted in a direction perpendicular to the plane of the substrate, so that the light-emitting angle range of the display panel is narrowed.
Because the viewer is when browsing the screen, most of the time is just watching the display screen, through adjusting the display panel to narrow viewing angle mode, the light that the sub-pixel originally sent towards the big viewing angle scope that human eye can't observe at this moment is emitted towards narrow viewing angle region, for example in the normal viewing scope of declination about 10 °, thus can be observed by human eye, so only need lower driving voltage can make luminous intensity of luminescent material satisfy viewer's watching demand, greatly slowed down luminescent material's ageing rate, also protected viewer's individual privacy well simultaneously, avoid the people except viewer observing the display picture.
It is understood that, taking the first liquid layer as an aqueous solution, the second liquid layer as an oily solution, and the applied voltage being positive to achieve the aforementioned lens focusing effect as an example, when the first liquid layer is an oily solution and the second liquid layer is an aqueous solution, the applied voltage is changed to negative to achieve the aforementioned lens focusing effect, and those skilled in the art can select the applied voltage according to actual situations.
According to some embodiments of the present invention, the structure of the sub-lens is not particularly limited, for example, referring to fig. 1, 2, 3 and 4, the sub-lens includes, in a direction toward the pixel layer along the substrate 100: a first liquid layer 410; a second liquid layer 420, the second liquid layer 420 being located on one side of the first liquid layer 410; a liquid lens encapsulation layer 430, the liquid lens encapsulation layer 430 being located on a side of the second liquid layer 420 remote from the first liquid layer 410, an orthographic projection of the second liquid layer 420 on the substrate 100 being located inside an orthographic projection of the liquid lens encapsulation layer 430 on the substrate 100; an electrode layer 440, the electrode layer 440 being arranged around the sub-lenses, the electrode layer 440 being in contact with both the first liquid layer 410 and the second liquid layer 420. The stability of the sub-lens structure can be ensured through the arrangement of the liquid lens packaging layer, so that the change of the curvature radius can be sensitively generated when an external voltage is applied.
According to some embodiments of the present invention, a material forming the electrode layer is not particularly limited as long as it is conductive, and for example, the material forming the electrode layer may be a conductive metal material, and in particular, the material forming the electrode layer may include at least one of Al, Cu, and Ag.
According to some embodiments of the present invention, a material forming the liquid lens encapsulation layer is not particularly limited as long as the sub-lenses can be well encapsulated and have high transparency, and for example, the material forming the liquid lens encapsulation layer may be at least one of transparent PI and epoxy resin. Therefore, the liquid lens packaging layer can be formed only by heating the high polymer material and then arranging the high polymer material at the corresponding position, and then cooling and curing the high polymer material. Also, according to other embodiments of the present invention, the manner of forming the liquid lens encapsulation layer is not particularly limited, and for example, the first liquid layer and the second liquid layer may be encapsulated by coating, IJP printing or screen printing,
according to some embodiments of the present invention, the manner of forming the first liquid layer and the second liquid layer is not particularly limited, for example, the first solution and the second solution may be sequentially injected into the groove by inkjet printing, and the display panel may be left to stand after each completion of inkjet printing to level the solutions by physical sedimentation.
According to some embodiments of the present invention, the structure of the liquid lens encapsulation layer is not particularly limited, for example, referring to fig. 1 and 3, each sub-lens may have one liquid lens encapsulation layer 430 corresponding thereto, thereby achieving an encapsulation effect for the sub-lens structure. Moreover, the mask plate adopted when the first liquid and the second liquid are dripped is recycled, the utilization rate of the mask plate is improved, and the production and manufacturing cost is reduced; referring to fig. 2 and 4, the sub-lenses may also have one liquid lens encapsulation layer 430, for example, the entire display panel may have only one liquid lens encapsulation layer 430, so that the liquid lens encapsulation layer 430 may be directly deposited or evaporated on the display panel in a whole layer to form the liquid lens encapsulation layer 430 when the liquid lens encapsulation layer 430 is prepared.
According to some embodiments of the present invention, the number of the sub-lenses of the liquid lens layer is not particularly limited as long as the liquid lens layer can cover the light emitting angle range of the pixel layer, for example, the liquid lens layer includes a plurality of sub-lenses, and the orthographic projection of each sub-lens on the substrate covers the orthographic projection of one sub-pixel on the substrate, that is, each sub-pixel has a corresponding sub-lens, the sub-pixels correspond to the sub-lenses one-to-one, and the area of the sub-lens is not smaller than that of the corresponding sub-pixel, so that the sub-lenses can cover all the light paths of the light emitted by the corresponding sub-pixels, and thus the light emitting direction of each sub-pixel can be precisely adjusted by adjusting the applied voltage to the sub-lenses.
According to some embodiments of the present invention, the structure of the display panel is not particularly limited, and referring to fig. 5 and 6, for example, the display panel may further include: a common electrode 441. When the display panel has the common electrode 441, the electrode layers 440 of the plurality of sub-lenses can be electrically connected to the common electrode 441, so that the voltage of the electrode layers of the plurality of sub-lenses can be synchronously adjusted by adjusting the voltage of the common electrode, and further, the synchronous regulation and control of the light emitting directions of the plurality of sub-pixels can be realized.
According to some embodiments of the present invention, the refractive indices of the first liquid layer and the second liquid layer are not particularly limited, for example, the refractive index of the first liquid layer may be less than the refractive index of the second liquid layer. Referring to FIGS. 7 and 8 and the law of refractive index, n2sinθ2＝n3sinθ3Wherein n is2Is the refractive index of the first liquid layer 410, n3The refractive index of the second liquid layer 420, and thus it can be seen that n is n by adjusting the refractive index distribution of the liquid lens by voltage3Greater than n2That is, when the refractive index of the first liquid layer is smaller than that of the second liquid layer, the emergent light of the sub-pixel 210 can be emitted in the direction perpendicular to the plane of the substrate, so as to narrow the light-emitting angle range of the display panel.
According to some embodiments of the present invention, the first solution forming the first liquid layer and the second solution forming the second liquid layer are not particularly limited, for example, the first solution forming the first liquid layer and the second solution forming the second liquid layer should be immiscible, so that the liquid lens has a stable layered structure, according to other embodiments of the present invention, the first solution forming the first liquid layer and the second solution forming the second liquid layer are not particularly limited as long as there is a large difference in conductivity therebetween, for example, the first solution forming the first liquid layer is a solution that can conduct electricity, and the second solution forming the second liquid layer can be a solution that does not conduct electricity, so that when a voltage is applied to the sub-lens, the amount of electricity on the contact surface of the first liquid layer and the second liquid layer is changed, thereby achieving the stable destruction and rebalancing of the contact surface, finally, a new contact surface with a changed radius of curvature is obtained.
According to some embodiments of the present invention, the kinds of the first solution and the second solution are not particularly limited as long as the first solution and the second solution are immiscible with each other, and one of the first solution and the second solution is a conductive solution and the other is a non-conductive solution, for example, the first solution may be a strong electrolyte solution and the second solution may be a silicone oil solution.
According to some embodiments of the present invention, the structure of the display panel is not particularly limited, and referring to fig. 1 and 2, the display panel may further include: the packaging layer 300, the packaging layer 300 is located on one side of the pixel layer far away from the substrate 100; the black matrix layer is positioned on one side of the packaging layer 300 far away from the pixel layer, and the orthographic projection of the black matrix layer on the substrate 100 is positioned inside the orthographic projection of the pixel defining structure 220 on the substrate 100; the black matrix layer has a plurality of black matrix grooves, the sub-lenses are positioned in the black matrix grooves, and the electrode layer 440 is disposed on sidewalls of the black matrix grooves. The black matrix layer comprises a plurality of black matrixes 310, and the positions, where the black matrixes 310 are not arranged, on the black matrix layer are the black matrix grooves. When the orthographic projection of the black matrix layer on the substrate 100 is located inside the orthographic projection of the pixel defining structure 220 on the substrate 100, that is, the orthographic projection of the side wall of the black matrix groove on the substrate 100 surrounds the orthographic projection of one sub-pixel 210 on the substrate 100, the orthographic projection of the sub-lens located in the black matrix groove on the substrate 100 can be ensured to cover the orthographic projection of the corresponding sub-pixel on the substrate 100, and therefore, the sub-lens can fully cover the light emitting direction of the corresponding sub-pixel, and the accurate adjustment of the light emitting direction of each sub-pixel is realized.
According to some embodiments of the present invention, the structure of the encapsulation layer is not particularly limited, for example, the encapsulation layer may include a first encapsulation layer located on a side of the pixel layer away from the substrate 100; the second packaging layer is positioned on one side of the first packaging layer, which is far away from the pixel layer; and the third packaging layer is positioned on one side, far away from the first packaging layer, of the second packaging layer, and can realize the effects of blocking external water and oxygen and prolonging the service life of the pixel layer luminescent material by the arrangement of the packaging layer.
According to some embodiments of the present invention, the structure of the electrode layer is not particularly limited as long as a voltage can be applied to the sub-lenses through the electrode layer, for example, referring to fig. 1, the electrode layer 440 may cover only a portion of the sidewalls of the black matrix; referring to fig. 3, the electrode layer 440 may also cover the entire surface of the entire black matrix 310.
According to some embodiments of the present invention, the refractive index of the encapsulation layer and the liquid lens encapsulation layer is not particularly limited, for example, referring to fig. 1, 9 and 10, with the refractive index of the encapsulation layer being n1The refractive index of the first liquid layer being n2The refractive index of the second liquid layer being n3The refractive index of the liquid lens packaging layer is n4For example, when n3>n1，n1>n2And n2>n4When the display device is used by multiple people for browsing pictures, the display panel can be switched from a narrow viewing angle display mode to a wide viewing angle display mode, and the advantage of the wide display angle of the OLED screen is exerted to the maximum extent. The wide-angle regulation function principle of the sub-lens is as follows: at the refractive index n of the first liquid layer 4102Smaller than the refractive index n of the second liquid layer 4203For example, n can be known from the law of refractive index without applying a voltage to the sub-lenses1sinθ1＝n2sinθ2＝n3sinθ3＝n4sinθ4I.e. satisfying n3>n2Provided that n is further satisfied3>n1，n1>n2And n2>n4Will make theta1<θ4At this time, the sub-lens further increases the light-emitting angle range of the sub-pixel, so that the sub-lens in the present application can narrow the light-emitting angle range of the sub-pixel when applying an external voltage, thereby prolonging the service life of the light-emitting material of the display panel, and the sub-lens can further increase the light-emitting angle range of the sub-pixel when not applying an external voltageThe visual range of the display panel can be further expanded compared with the conventional display panel.
According to some embodiments of the present invention, the structure of the display panel is not particularly limited, and referring to fig. 3 and 4, the display panel may further include: the packaging layer 300, the packaging layer 300 is located on one side of the pixel layer far away from the substrate 100; the touch electrode layer 500, the touch electrode layer 500 is located on one side of the packaging layer 300 away from the pixel layer; the isolation layer 600, the isolation layer 600 is located on one side of the touch electrode layer 500 away from the packaging layer; the isolation matrix layer is positioned on one side of the isolation layer 600 far away from the touch electrode layer 500, and the orthographic projection of the isolation matrix layer on the substrate 100 is positioned inside the orthographic projection of the pixel defining structure 220 on the substrate 100; the isolation matrix layer has a plurality of isolation matrix grooves, the sub-lenses are located in the isolation matrix grooves, and the electrode layer 440 is disposed on sidewalls of the isolation matrix grooves. The isolation matrix layer comprises a plurality of isolation matrices 610, and the positions on the isolation matrix layer where the isolation matrices 610 are not arranged are isolation matrix grooves. When the orthographic projection of the isolation matrix layer on the substrate 100 is located inside the orthographic projection of the pixel definition structure 220 on the substrate 100, namely, when the orthographic projection of the side wall of the isolation matrix groove on the substrate 100 surrounds the orthographic projection of one sub-pixel 210 on the substrate 100, the orthographic projection of the sub-lens located in the isolation matrix groove on the substrate 100 can be ensured to cover the orthographic projection of the corresponding sub-pixel on the substrate 100, therefore, the sub-lens can fully cover the light emitting direction of the corresponding sub-pixel, and the accurate adjustment of the light emitting direction of each sub-pixel is realized.
According to some embodiments of the present invention, the structure of the electrode layer is not particularly limited as long as a voltage can be applied to the sub-lenses through the electrode layer, for example, referring to fig. 2, the electrode layer 440 may cover only a portion of the sidewalls of the isolation matrix 610; referring to fig. 4, the electrode layer 440 may also cover the entire surface of the entire isolation matrix 610.
According to some embodiments of the present invention, the refractive indexes of the isolation layer and the liquid lens encapsulation layer are not particularly limited, for example, referring to fig. 1, 9 and 10, the refractive index of the isolation layer is n1The refractive index of the first liquid layer being n2Layer of a second liquidHas a refractive index of n3The refractive index of the liquid lens packaging layer is n4For example, when n3>n1，n1>n2And n2>n4When the display device is used by multiple people for browsing pictures, the display panel can be switched from a narrow viewing angle display mode to a wide viewing angle display mode, and the advantage of the wide display angle of the OLED screen is exerted to the maximum extent. The wide-angle regulation function principle of the sub-lens is as follows: at the refractive index n of the first liquid layer 4102Smaller than the refractive index n of the second liquid layer 4203For example, n can be known from the law of refractive index without applying a voltage to the sub-lenses1sinθ1＝n2sinθ2＝n3sinθ3＝n4sinθ4I.e. satisfying n3>n2Provided that n is further satisfied3>n1，n1>n2And n2>n4Will make theta1<θ4At this time, the sub-lens further increases the light-emitting angle range of the sub-pixel, so that the sub-lens in the present application can narrow the light-emitting angle range of the sub-pixel when an external voltage is applied, the service life of the light-emitting material of the display panel is prolonged, and the visual range of the display panel can be further enlarged compared with a conventional display panel when no external voltage is applied.
In another aspect of the present invention, the present invention provides a display device, including the aforementioned display panel. Therefore, the display device has all the features and advantages of the display panel, and the description thereof is omitted.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. All patents and publications referred to herein are incorporated by reference in their entirety. The term "comprising" or "comprises" is open-ended, i.e. comprising what is specified in the present invention, but not excluding other aspects. In the present invention, all numbers disclosed herein are approximate values, regardless of whether the word "about" or "approximately" is used. There may be differences below 10% in the value of each number or reasonably considered by those skilled in the art, such as differences of 1%, 2%, 3%, 4% or 5%.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more.
In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.
In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
In the description of the present invention, the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description herein, references to the description of "one embodiment," "another embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. In addition, it should be noted that the terms "first" and "second" in this specification are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A display panel, comprising:
a substrate;
the pixel layer comprises a plurality of pixel units, each pixel unit is provided with a plurality of sub-pixels, and a pixel defining structure is arranged between the sub-pixels;
the liquid lens layer is positioned on one side, far away from the substrate, of the pixel layer and comprises at least one sub-lens, and the orthographic projection of the sub-lens on the substrate at least covers the orthographic projection of one sub-pixel on the substrate.
2. The display panel of claim 1, wherein the sub-lenses comprise, in a direction toward the pixel layer from the substrate:
a first liquid layer;
a second liquid layer on one side of the first liquid layer;
a liquid lens encapsulation layer located on a side of the second liquid layer remote from the first liquid layer, an orthographic projection of the second liquid layer on the substrate being located inward of an orthographic projection of the liquid lens encapsulation layer on the substrate;
an electrode layer disposed around the sub-lens, the electrode layer in contact with both the first liquid layer and the second liquid layer.
3. The display panel of claim 2 wherein the liquid lens layer comprises a plurality of said sub-lenses, each of which has an orthographic projection on the substrate that covers an orthographic projection of one of the sub-pixels on the substrate.
4. The display panel according to claim 3, characterized by further comprising:
and the electrode layers of the sub lenses are electrically connected with the common electrode.
5. The display panel of claim 2, wherein the refractive index of the first liquid layer is less than the refractive index of the second liquid layer;
optionally, a first solution forming the first liquid layer is immiscible with a second solution forming the second liquid layer;
optionally, the first solution forming the first liquid layer is a conductive solution and the second solution forming the second liquid layer is a non-conductive solution.
6. The display panel according to claim 5, characterized by further comprising:
the packaging layer is positioned on one side, far away from the substrate, of the pixel layer;
the black matrix layer is positioned on one side, far away from the pixel layer, of the packaging layer, and the orthographic projection of the black matrix layer on the substrate is positioned inside the orthographic projection of the pixel defining structure on the substrate; the black matrix layer is provided with a plurality of black matrix grooves, the sub-lenses are positioned in the black matrix grooves, and the electrode layer is arranged on the side walls of the black matrix grooves.
7. The display panel of claim 6, wherein the second liquid layer has a refractive index greater than the refractive index of the encapsulation layer, wherein the refractive index of the encapsulation layer is greater than the refractive index of the first liquid layer, and wherein the refractive index of the first liquid layer is greater than the refractive index of the liquid lens encapsulation layer.
8. The display panel according to claim 5, characterized by further comprising:
the packaging layer is positioned on one side, far away from the substrate, of the pixel layer;
the touch electrode layer is positioned on one side, far away from the pixel layer, of the packaging layer;
the isolating layer is positioned on one side, far away from the packaging layer, of the touch electrode layer;
the isolation matrix layer is positioned on one side, away from the touch electrode layer, of the isolation layer, and the orthographic projection of the isolation matrix layer on the substrate is positioned inside the orthographic projection of the pixel definition structure on the substrate; the isolation matrix layer is provided with a plurality of isolation matrix grooves, the sub-lenses are located in the isolation matrix grooves, and the electrode layers are arranged on the side walls of the isolation matrix grooves.
9. The display panel of claim 8, wherein the second liquid layer has a refractive index greater than the barrier layer, the barrier layer has a refractive index greater than the first liquid layer, and the first liquid layer has a refractive index greater than the liquid lens encapsulant layer.
10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149577.3A CN114512624A (en) | 2022-02-18 | 2022-02-18 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149577.3A CN114512624A (en) | 2022-02-18 | 2022-02-18 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114512624A true CN114512624A (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210149577.3A Pending CN114512624A (en) | 2022-02-18 | 2022-02-18 | Display panel and display device |
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| Country | Link |
|---|---|
| CN (1) | CN114512624A (en) |
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2022
- 2022-02-18 CN CN202210149577.3A patent/CN114512624A/en active Pending
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