CN108598130B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN108598130B CN108598130B CN201810481264.1A CN201810481264A CN108598130B CN 108598130 B CN108598130 B CN 108598130B CN 201810481264 A CN201810481264 A CN 201810481264A CN 108598130 B CN108598130 B CN 108598130B
- Authority
- CN
- China
- Prior art keywords
- display
- display panel
- light
- display area
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a display panel and a display device. A display panel, comprising: the display area comprises a plurality of sub-pixels and comprises a curved surface display area; the display panel includes: the display panel comprises a display layer and a light processing layer at least positioned in a curved surface display area, wherein the light processing layer is positioned on one side of the display layer, which is close to the display surface of the display panel, and is used for optimizing the visual angle of the curved surface display area; the display panel has a front view direction, and the light emitting direction of each sub-pixel in the curved surface display area is deviated to the front view direction. The invention can optimize the visual angle of the curved surface display area, and the user can achieve better viewing effect when viewing the curved surface display area in the front view direction, thereby improving the user experience.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
In the conventional display device technology, the display panel is mainly divided into two mainstream technologies, namely a liquid crystal display panel and an organic self-luminous display panel. The liquid crystal display panel forms an electric field capable of controlling the deflection of liquid crystal molecules by applying voltage on the pixel electrode and the common electrode, and further controls the transmission of light rays to realize the display function of the display panel; the organic self-luminous display panel adopts an organic electroluminescent material, and when current passes through the organic electroluminescent material, the luminescent material can emit light, so that the display function of the display panel is realized.
With the improvement of science and technology and the improvement of user demands, various special-shaped display products appear in the market at present, such as curved surface display devices, for example, curved surface screen mobile phones, smart watches and the like. For a display device having a curved display area, the curved display area is generally less effective when viewed from the front.
Therefore, it is an urgent problem to be solved in the art to provide a display panel and a display device, which improve the viewing effect of a curved display area when viewing from the front.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which solve the technical problem of improving the viewing effect of a curved display area when viewing from the front.
In order to solve the above technical problem, the present invention provides a display panel, including: the display area comprises a plurality of sub-pixels and comprises a curved surface display area;
the display panel includes: the display panel comprises a display layer and a light processing layer at least positioned in a curved surface display area, wherein the light processing layer is positioned on one side of the display layer, which is close to the display surface of the display panel, and is used for optimizing the visual angle of the curved surface display area;
the display panel has a front view direction, and the light emitting direction of each sub-pixel in the curved surface display area is deviated to the front view direction.
Further, in order to solve the above technical problem, the present invention provides a display device including any one of the display panels.
Compared with the prior art, the display panel and the display device provided by the invention have the beneficial effects that:
the display panel provided by the invention is characterized in that the light processing layer is at least arranged on the curved surface display area part, the light processing layer is positioned on one side of the display layer close to the display surface of the display panel, and light rays emitted by the display layer in the curved surface display area can be emitted from the display surface of the display panel after penetrating through the light processing layer. The light-emitting direction of each sub-pixel in the curved surface display area is deviated to the front-view direction after being processed by the light processing layer, so that the visual angle of the curved surface display area can be optimized, a better viewing effect can be achieved when a user views the curved surface display area in the front-view direction, and the user experience is improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a cross-sectional view of a display panel according to the related art;
FIG. 2 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken at line Q1 of FIG. 2;
FIG. 4 is a schematic cross-sectional view of an alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of light emission from a single sub-pixel in a flat display area of a conventional display panel;
FIG. 6 is a schematic diagram of light output from a single sub-pixel in a curved display area of a conventional display panel;
fig. 7 is a diagram of a film structure of an alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 8 is a film structure diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 9 is a partial schematic view of an alternative embodiment of a display panel according to an embodiment of the invention;
FIG. 10 is a schematic diagram of another alternative embodiment of a display panel according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention;
FIG. 12 is a schematic cross-sectional view of an optical fiber in a display panel according to an embodiment of the invention;
fig. 13 is a second schematic cross-sectional view of a display panel according to an embodiment of the invention;
FIG. 14 is a partial schematic view of another alternative embodiment of a display panel according to an embodiment of the invention;
fig. 15 is a schematic view of an optical path when a gap between two adjacent light emitting devices is smaller than a distance between centers of two adjacent optical fibers;
FIG. 16 is a schematic diagram illustrating an arrangement of optical fibers in a light treatment layer in a display panel according to an embodiment of the present invention;
FIG. 17 is a schematic cross-sectional view of another alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 18 is a schematic view of a display device according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic cross-sectional view of a display panel in the related art. As shown in fig. 1, the display area of the display panel has a curved display portion QM ', and the display panel includes a plurality of pixels sp ', each of which has a respective light-emitting angle, so that the user can view the display panel from the range of light-emitting angles of the pixels sp ' with the best viewing effect. When the user views at the position S1 of the display panel, the viewing effect of the display region corresponding to the front viewing direction is better, and the viewing effect of the user viewing the curved display portion is worse because the viewing position deviates from the light exit angle of the pixel sp' in the curved display portions QM on both sides. Based on the above problems, the inventors propose a display panel and a display device, in which a light processing layer is disposed in the display panel, so as to improve the light emitting direction of each sub-pixel in a curved display area, and achieve a good viewing effect when the curved display area is viewed from the front of the display panel.
Fig. 2 is a schematic top view of a display panel according to an embodiment of the invention, and fig. 3 is a schematic cross-sectional view taken along a line Q1 in fig. 2.
Referring to fig. 2 and 3 together, the display panel includes: a display area AA, the display area AA including a plurality of sub-pixels sp, the arrangement of the sub-pixels sp in fig. 1 is only schematically shown, and the display area AA includes a curved display area AA1 (which is illustrated as a plane in the top view of fig. 1). As shown in fig. 2, the display panel includes: the display device comprises a display layer 101 and a light processing layer 102 at least positioned in a curved display area AA1, wherein the light processing layer 102 is positioned on the display surface side of the display layer 101 close to the display panel, and the light processing layer 102 can be arranged in a whole layer or only the light processing layer 102 is arranged at a position corresponding to a curved display area AA 1. A protective layer 103 is usually disposed on the outermost side of the display panel, and in this case, the surface of the protective layer 103 is the display surface side of the display panel. The light processing layer 102 is used for optimizing the visual angle of the curved surface display area AA1, the visual angle is understood as the viewing angle of a user, and the arrangement of the light processing layer can enable the user to achieve a better viewing effect when the user views the curved surface display area in the front view direction; the display panel has a front view direction e, and the light emitting direction of each sub-pixel sp in the curved display area AA1 is shifted to the front view direction e. The front view direction is the direction that the eyes of the user look at the display panel, and the eyes of the user can see the display picture of the display area in the front view direction, that is, the light emitted by the sub-pixels in the display area can be transmitted to the eyes in the front view direction.
The front viewing direction in the present invention is defined as the viewing direction of the user in the normal application scene of the display panel. Taking the display panel shown in fig. 3 as an example, the front view direction e is a direction perpendicular to the planar display area of the display panel. Taking the entire display area of the display panel as a curved display area as an example, fig. 4 is a schematic cross-sectional view of an alternative implementation manner of the display panel according to the embodiment of the present invention, as shown in fig. 4, the entire display area is a curved display area, and then the front view direction e is a direction in which sub-pixels sp at the center of the curved display area are directly opposite to each other, and the front view direction e is schematically shown in fig. 4.
FIG. 5 is a schematic diagram of light emission from a single sub-pixel in a flat display area of a conventional display panel. As shown in fig. 5, it can be understood that light emitted from the sub-pixel sp1 in the display area has a certain light exit angle β 1 when exiting from the display surface M of the display panel 100, and when the normal f1 direction of the light exit position of the sub-pixel sp1 is the front viewing direction of the sub-pixel sp1, the best display effect of the sub-pixel sp1 can be seen, and as long as the color displayed by the sub-pixel sp1 can be normally viewed even if slightly deviated from the normal direction within the range of the light exit angle β, but if the viewing position point S2 is out of the range of the light exit angle β 1, the display of the sub-pixel sp1 cannot be seen. The normal f1 is perpendicular to the surface of the display panel where the light exit position of the sub-pixel sp1 is located.
Fig. 6 is a schematic diagram of light output from a single sub-pixel in a curved display area of a conventional display panel. As shown in fig. 6, the sub-pixel sp2 has a light-exiting angle β 2, and the normal f2 is perpendicular to the plane of the sub-pixel sp2, and when the sub-pixel sp2 is understood as a point on a curved display area (which is an ideal state), the normal f2 is perpendicular to the surface tangential to the curved display area, and the sub-pixel sp2 is located on the surface. The sub-pixel sp3 has an exit angle β 3, and the normal f3 is selected in the same manner as the normal f2, which is not described herein again. When the position point viewed by the user is the position point S3, there is a possibility that the color displayed by the sub-pixel sp3 in the curved surface display area cannot be viewed.
With reference to fig. 3, in the present invention, the light processing layer 102 is disposed at least in the curved display area AA1, and in the curved display area AA1, the light emitted from the display layer 101 can penetrate through the light processing layer 102 before being emitted from the display surface of the display panel. Taking the sub-pixel sp4 in the curved display area AA1 as an example, the light emitting direction of the light after being processed by the light processing layer 102 is shifted to the front viewing direction e, which is a direction perpendicular to the flat display area AA2, and fig. 3 only illustrates a display panel with a flat display area AA 2. It is understood that the display area is divided into a plurality of display units, one display unit being one sub-pixel, which is not a concept in the display panel structure. The area of the display panel where the sub-pixels are located is understood to comprise the part of the structure of the display panel on the film layer. The sub-pixel sp4 is only a schematic representation in fig. 3.
The display panel provided by the invention is characterized in that the light processing layer is at least arranged on the curved surface display area part, the light processing layer is positioned on one side of the display layer close to the display surface of the display panel, and light rays emitted by the display layer in the curved surface display area can be emitted from the display surface of the display panel after penetrating through the light processing layer. The light-emitting direction of each sub-pixel in the curved surface display area is deviated to the front-view direction after being processed by the light processing layer, so that the visual angle of the curved surface display area can be optimized, a better viewing effect can be achieved when a user views the curved surface display area in the front-view direction, and the user experience is improved.
Further, fig. 7 is a film structure diagram of an alternative implementation manner of the display panel according to the embodiment of the present invention. As shown in fig. 7, taking the display panel as an example in a flattened state, the display panel further includes an array substrate 104, the array substrate 104 is located on a side of the display layer 101 away from the display surface of the display panel, an encapsulation structure 105 is further disposed on the display layer 101, a polarizer 106 is further disposed on the light processing layer 102, and the light processing layer 102 may be disposed in a whole layer.
Fig. 8 is a film structure diagram of another alternative implementation of a display panel according to an embodiment of the present invention. As shown in fig. 8, the light management layer 102 may be a full layer arrangement. The display layer 101 includes a plurality of light emitting devices 1011, and the light emitting devices 1011 may be light emitting devices including a first electrode a, a second electrode b, and an organic light emitting layer c between the first electrode a and the second electrode b. The light emitting device 1011 may be a top emission type structure or a bottom emission type structure, and exemplarily, a top emission type light emitting device structure is illustrated in fig. 8. In the structure, the first electrode a can be an anode and can be used as a reflecting electrode; the organic light emitting layer c may include a red light emitting layer, a green light emitting layer, and a blue light emitting layer; the second electrode b is a cathode and is a transparent electrode. The light emitting device 1011 may further include one or more layers of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer. The array substrate 104 includes a plurality of thin film transistors T that may be used to constitute a pixel circuit to control the light emitting device to emit light through the pixel circuit, wherein the thin film transistors T include an active layer T1, a gate electrode T2, a source electrode T3, and a drain electrode T4. The first electrode a (anode) may be connected to the source electrode T3 or the drain electrode T4 of the thin film transistor T according to the type of the transistor, and exemplarily, the first electrode a is connected to the drain electrode T4 in fig. 8. Fig. 8 shows only a top-gate tft, but the tft of the present invention may also be a bottom-gate tft, which is not described herein. The encapsulation structure 105 may be a thin film encapsulation or a rigid encapsulation, and the thin film encapsulation may be a combined encapsulation of a plurality of organic thin films and inorganic thin films, for example, may be an alternate stacked structure of organic thin films and inorganic thin films. The organic film can be polymer materials such as epoxy, phenolic, polyester and the like; the inorganic thin film may be made of silicon nitride, silicon oxynitride, metal oxide, or the like. And the rigid package may be a glass package.
Further, fig. 9 is a partial schematic view of an alternative implementation manner of the display panel according to the embodiment of the present invention. As shown in fig. 9, the light processing layer 102 includes a plurality of optical fibers X, the optical fibers X include a first end D1 close to the display layer 101 and a second end D2 far from the display layer 101, and the second end D2 is bent from the first end D1 in the close front view direction e. The optical fiber X is used as a light conduction medium, so that total reflection of light can be realized, light rays emitted from the display layer 101 are transmitted inside the optical fiber X, the light loss is low, and the display brightness of the display panel cannot be influenced; and when the light penetrates the light processing layer 102, the light can enter the optical fiber X at the first end D1 of the optical fiber X and then exit at the second end D2, and the path of the light path transmission is changed by the optical fiber X. The second end D2 of optic fibre is bent by first end D1 to being close to on the direction of looking e, then the light homoenergetic through optic fibre X transmission can be to the direction of looking e skew to can make the light-emitting direction of sub-pixel in the curved surface display area all to the direction of looking skew, thereby can optimize the visual angle in curved surface display area, the user also can reach better viewing effect when watching curved surface display area in the direction of looking, user experience has been promoted.
It should be noted that the bending mode of the optical fiber in fig. 9 is only schematically shown, and the optical fiber may have any bending mode in the light processing layer, and the bending mode does not affect the total reflection performance of the light.
Further, with continued reference to fig. 9, in the curved display area AA1, the sub-pixel corresponding to the front viewing direction e is a central sub-pixel spz, the position of the central sub-pixel spz in fig. 9 is only schematically shown, and the area where the sub-pixel is located should also include a part of the film structure in the display panel; the optical fiber X has a bending curvature r, and the bending curvature r of the optical fiber X becomes gradually larger in a direction g from the center sub-pixel spz toward the edge of the curved display area AA 1. The understanding of the curvature r can refer to the curvature in the mathematical domain, and represents the degree of curvature of the curve, the greater the curvature, the greater the degree of curvature of the curve, and the reciprocal of the curvature is the curvature radius. In this embodiment, the larger the bending curvature r, the larger the degree of bending of the optical fiber X. In the embodiment, the optical fibers positioned on the light treatment layer all have bending curvature, the bending modes of the optical fibers are the same, and the manufacturing process is relatively simple.
Further, the display layer includes a plurality of light emitting devices including an anode, a light emitting layer, and a cathode, wherein the structure of the light emitting devices can be as shown in fig. 8; in the display panel provided by the embodiment of the invention, one sub-pixel comprises one light-emitting device, and one sub-pixel comprises m optical fibers, wherein m is a positive integer and is more than or equal to 1. In this embodiment, when one sub-pixel includes one optical fiber, the light emitted from the light emitting device in the sub-pixel is transmitted in one optical fiber in the light processing layer after exiting from the display layer, and finally exits from the display surface of the display panel; when one sub-pixel comprises two or more optical fibers, light emitted by the light emitting device in the sub-pixel is emitted from the display layer, enters the two or more optical fibers in the light processing layer for transmission, and finally is emitted from the display surface of the display panel. When the colors of the light rays emitted by two adjacent sub-pixels are different, the light paths can be changed when the light rays with different colors are supposed to be transmitted in the same optical fiber and then emitted from the other end of the optical fiber, and color crosstalk can be generated between the light rays with different colors. In the invention, one optical fiber in the light processing layer only belongs to one sub-pixel, and light rays emitted by the light emitting device in one sub-pixel are transmitted in the complete optical fiber when passing through the light processing layer, so that the problem of color crosstalk generated when two adjacent sub-pixels are displayed due to the fact that the shared optical fiber exists in the two adjacent sub-pixels is solved.
Further, fig. 10 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 10, in the optical fiber X, the first end D1 is an incident end, the first end D1 is close to the display layer 101, the light ray X emitted by the light emitting device 1011 in the display layer 101 is incident into the optical fiber from the first end D1, the second end D2 is an emergent end, the second end is far away from the display layer 101, and the light ray is transmitted inside the optical fiber X and then is emergent from the second end D2; in one sub-pixel, the normal fD1 direction of the first end D1 of the optical fiber X is parallel to the normal direction of the emergent surface of the light-emitting device, and the normal fD2 direction of the second end D2 of the optical fiber forms a first included angle psi with the normal direction of the emergent surface of the light-emitting device (namely, the normal fD1 direction of the first end D1); the first included angle psi is gradually larger in the direction g from the center sub-pixel to the edge of the curved display area. Fig. 10 illustrates an example in which only one sub-pixel includes one optical fiber, and light emitted from one light emitting device in fig. 10 is incident on one optical fiber for transmission. In the embodiment, the normal direction of the second end of the optical fiber and the normal direction of the first end form a first included angle, so that the path of optical path transmission can be changed after light rays are emitted from the second end after being transmitted in the optical fiber, and the size of the first included angle psi is the size of the angle of the optical path after the path is changed, which is compared with the original transmission path, in a deviation manner. In the display panel without the light processing layer, on the edge pointing to the curved display area from the front view direction, the angle of the light-emitting direction of the sub-pixel away from the front view direction is gradually increased, that is, the closer to the curved display edge, the poorer the effect is when the display panel is viewed in the front view direction. In the invention, the first included angle psi is gradually increased in the direction from the center sub-pixel to the edge of the curved surface display area, namely in the bending direction of the curved surface display area, so that the larger the angle of the sub-pixel which is observed in the front view direction and deviates from the front view direction is, the larger the first included angle psi of the optical fiber in the sub-pixel is, namely, the larger the angle of the light-emitting direction of the sub-pixel which deviates to the front view direction is, in the curved surface display area. Therefore, the light emitting directions of all the sub-pixels in the curved surface display area are enabled to deviate towards the front-view direction regularly, and the integral display effect of the display panel when the display panel is watched from the front-view direction is guaranteed.
In some alternative embodiments, the display panel has a first cross section, the front view direction is parallel to the first cross section, and the direction from the central sub-pixel to the edge of the curved display area is parallel to the first cross section.
Fig. 11 is a first cross-sectional view of a display panel according to an embodiment of the invention. As shown in fig. 11, in the first cross section: the curved display area is arc-shaped, the arc-shaped display area has a center O, and in one sub-pixel, a connection line between the center of the light emitting device 1011 and the center O is a first straight line L1, it is understood that the connection line between the center of the light emitting device 1011 and the center O is a first straight line L1, and it is understood that the light emitting device 1011 has a certain size and should not be a point. The first straight line L1 forms a second angle θ with the front view direction e, where the first angle ψ of the optical fiber X is (1 ± 10%). θ. In the curved display region having an arc shape with a center O, the display layer 101 where the light emitting device 1011 is located is also in the arc shape in the first cross section, and the center of the arc shape is also O. The normal of the exit surface of the light emitting device 1011 should be a straight line connecting the center of the light emitting device and the center O, that is, the first line L1 is the normal of the exit surface of the light emitting device 1011, that is, the normal f D1 of the incident end of the optical fiber X. When the normal f D2 direction of the exit end of the optical fiber in the sub-pixel is parallel to the front viewing direction e, the front viewing direction of the light beam after the optical fiber changes the optical path is the front viewing direction e, and the viewing effect when viewing the sub-pixel in the front viewing direction e is the same as that when viewing the central sub-pixel in the front viewing direction e. When the normal f D2 direction of the exit end of the optical fiber in the sub-pixel is parallel to the front viewing direction e, the first included angle ψ of the optical fiber X in the sub-pixel is θ. In the invention, the first included angle psi of the optical fiber X is set to be (1 +/-10%). theta, and considering that a certain error may exist in a manufacturing process when a light processing layer is manufactured, the adjustment of the optical fiber to a light transmission path can be ensured as long as a certain relation is satisfied between the first included angle psi and the second included angle theta, so that the light emitting direction of each sub-pixel in the curved surface display area is ensured to be deviated to the front viewing direction, and the viewing angle of the curved surface display area is further optimized. In some implementations, the first included angle ψ and the second included angle θ are equal.
Further, in the display panel provided in the embodiment of the present invention, in one sub-pixel, the light emitting angle of the light emitting device is α, and the numerical aperture of the optical fiber is NA, where NA is greater than or equal to sin (α/2). The light emitted by the light emitting device has a certain light emitting angle alpha, and the light emitted by the light emitting device is incident into the optical fiber from the first end (incident end) of the optical fiber. The light incident to the first end of the optical fiber needs to be ensured to be received by the optical fiber within a certain angle range, the numerical aperture of the optical fiber can represent the capability of receiving light by the light end face, the numerical aperture of the optical fiber is NA (NA) which is not less than sin (alpha/2), the light emitted by the light emitting device can be ensured to be received by the optical fiber, then the light is emitted from the second end of the optical fiber after being transmitted inside the optical fiber, the direction of all the light emitted by the light emitting device emitted from the display surface is changed through the optical fiber, the light emitting direction of the sub-pixel is further improved, and the light emitting efficiency of the curved surface display area is ensured. In some implementations, the light-emitting distribution of the light-emitting end of the optical fiber is similar to the light-emitting distribution curve of the pixel, which requires that the incident light receiving capacity of the optical fiber is larger than the light-emitting angle (70 °) of the OLED, and the corresponding numerical aperture NA is preferably ≧ sin (70 °/2) ≈ 0.57.
Further, fig. 12 is a schematic cross-sectional view of an optical fiber in a display panel according to an embodiment of the present invention. It should be noted that in the present application, the numerical aperture NA of the optical fiber is mainly adjusted by adjusting the refractive index parameter of the optical fiber. Specifically, as shown in fig. 12, the optical fiber X includes a core X1 and a cladding X2 surrounding the core X1, and the core X1 has a refractive index n1The cladding X2 has a refractive index n2Wherein, in the step (A),
the embodiment can ensure that light rays entering the optical fiber can be emitted from the emergent end of the optical fiber after being totally reflected for multiple times inside the optical fiber, so that the light loss is almost zero when the light rays emitted by the light-emitting device penetrate through the light processing layer, and the light-emitting efficiency of the curved surface display area is ensured.
In some alternative embodiments, the display panel has a second cross-section, the second cross-section being parallel to the light management layer. Fig. 13 is a second schematic cross-sectional view of a display panel according to an embodiment of the invention. As shown in fig. 13, in the second cross section: the cross section of the optical fiber X is circular, the center of the circle is the center O1 of the optical fiber, the distance between the centers O1 of two adjacent optical fibers X is d, wherein d is more than or equal to 20 mu m and more than or equal to 5 mu m. I.e. the diameter of a single ray X in the second cross-section is equal to or less than d.
Further, fig. 14 is a partial schematic view of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 14, in the display layer 101, a gap H between two adjacent light emitting devices 1011 is larger than d. Fig. 8 schematically shows only a gap H between two adjacent light emitting devices 1011 in a cross-sectional view. It is understood that in the display panel, the light emitting device may be adjacent to a plurality of light emitting devices in a plurality of directions surrounding the light emitting device. In the embodiment, the gap between two adjacent light-emitting devices can be ensured to be larger than d, namely, the gap is larger than the diameter of a single optical fiber, when the optical fibers are densely arranged on the light processing layer, one optical fiber arranged above the light-emitting devices only receives light rays emitted by one light-emitting device, abnormal display caused by attachment deviation cannot occur, and the product yield is high. And when the gap between two adjacent light emitting devices is smaller than the diameter size of a single optical fiber, fig. 15 is a schematic view of an optical path when the gap between two adjacent light emitting devices is smaller than the interval between the centers of two adjacent optical fibers. As shown in fig. 15, the gap H between two adjacent light emitting devices 1011 is smaller than the distance d between the centers of two adjacent optical fibers X, and if the fitting deviation is large, the light emitted by two adjacent light emitting devices 1011 may enter the same optical fiber X, and the display abnormality may be caused when the light exits from the optical fiber exit end again.
Optionally, in the display panel provided by the invention, the optical fiber may be arranged on the whole surface of the optical processing layer, so that the structural strength of the whole optical processing layer is ensured to be consistent, and the mechanical stability of the display panel is ensured. Optionally, the optical fiber may be only arranged at a position corresponding to the light emitting device in the curved display area, and the arrangement of the optical fiber only at a position corresponding to the light emitting device can ensure that light emitted by the light emitting device can change a propagation path of a light path through the optical fiber, thereby saving the use of the optical fiber in the light processing layer and saving the manufacturing cost of the display panel.
Further, in the display panel provided by the present invention, the optical fibers are arranged in a zigzag shape or in a zigzag shape in the light treatment layer. FIG. 16 is a schematic diagram illustrating an arrangement of optical fibers in a light treatment layer in a display panel according to an embodiment of the present invention. As shown in fig. 16, the optical fibers X are arranged in a zigzag shape. The arrangement of the optical fibers may be referred to as the arrangement in fig. 13, in which the optical fibers X are arranged in a zigzag pattern in fig. 13.
Further, fig. 17 is a schematic cross-sectional view of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 17, the entire display area AA of the display panel is a curved display area AA1, and the cross section of the display panel is simply drawn in fig. 17 and does not show the film structure of the display panel. The display panel provided by the embodiment can be applied to intelligent devices for manufacturing curved surface display, such as a curved surface screen mobile phone, an intelligent watch and the like.
Fig. 18 is a schematic view of a display device according to an embodiment of the present invention. As shown in fig. 18, the display device includes a display panel 100 provided in any embodiment of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like.
According to the embodiment, the display panel and the display device of the invention have the following beneficial effects:
the display panel provided by the invention is characterized in that the light processing layer is at least arranged on the curved surface display area part, the light processing layer is positioned on one side of the display layer close to the display surface of the display panel, and light rays emitted by the display layer in the curved surface display area can be emitted from the display surface of the display panel after penetrating through the light processing layer. The light-emitting direction of each sub-pixel in the curved surface display area is deviated to the front-view direction after being processed by the light processing layer, so that the visual angle of the curved surface display area can be optimized, a better viewing effect can be achieved when a user views the curved surface display area in the front-view direction, and the user experience is improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A display panel, comprising: a display area comprising a plurality of sub-pixels, the display area comprising a curved display area;
the display panel includes: the display panel comprises a display layer and a light processing layer at least positioned in the curved surface display area, wherein the light processing layer is positioned on one side of the display layer, which is close to the display surface of the display panel, and is used for optimizing the visual angle of the curved surface display area;
the optical processing layer comprises a plurality of optical fibers, the optical fibers comprise first ends close to the display layer and second ends far away from the display layer, and the second ends are bent from the first ends to the direction close to the front view;
the display panel is provided with a front view direction, and the light emergent direction of each sub-pixel in the curved surface display area is deviated to the front view direction;
in the curved surface display area, the sub-pixel corresponding to the front view direction is a central sub-pixel;
the optical fiber has a bending curvature, and the bending curvature of the optical fiber is gradually increased in a direction from the central sub-pixel to the edge of the curved display area;
the display layer includes a plurality of light emitting devices including an anode, a light emitting layer, and a cathode;
one of the sub-pixels comprises one of the light emitting devices, and one of the sub-pixels comprises m optical fibers, wherein m is a positive integer and is more than or equal to 1;
in one sub-pixel, the light-emitting angle of the light-emitting device is alpha, the numerical aperture of the optical fiber is NA, and NA is not less than sin (alpha/2).
2. The display panel according to claim 1,
in the optical fiber, the first end is an incident end, and the second end is an emergent end;
in one sub-pixel, the normal direction of the first end of the optical fiber is parallel to the normal direction of the emergent surface of the light-emitting device, and the normal direction of the second end of the optical fiber forms a first included angle psi with the normal direction of the emergent surface of the light-emitting device;
and the first included angle psi is gradually increased in the direction from the central sub-pixel to the edge of the curved surface display area.
3. The display panel according to claim 2,
the display panel is provided with a first section, the front view direction is parallel to the first section, and the direction from the central sub-pixel to the edge of the curved display area is parallel to the first section;
on the first cross section:
the curved surface display area is in an arc shape, the arc shape is provided with a circle center,
in one sub-pixel, a connecting line between the light emitting device and the circle center is a first straight line, an included angle between the first straight line and the front view direction is a second included angle θ, and the first included angle ψ of the optical fiber is (1 ± 10%). θ.
4. The display panel according to claim 1,
the optical fiber comprises a fiber core and a cladding surrounding the fiber core, wherein the refractive index of the fiber core is n1The refractive index of the cladding is n2Wherein, in the step (A),
5. the display panel according to claim 1,
the display panel is provided with a second cross section, and the second cross section is parallel to the light processing layer;
on the second cross section:
the cross section of the optical fiber is circular, the circle center of the circular shape is the center of the optical fiber, the distance between the centers of two adjacent optical fibers is d, wherein d is more than or equal to 20 mu m and more than or equal to 5 mu m.
6. The display panel according to claim 5,
in the display layer, the gap between two adjacent light emitting devices is larger than d.
7. The display panel according to claim 1,
the optical fiber is provided over the entire surface of the light treatment layer, or the optical fiber is provided only at a position corresponding to the light emitting device.
8. The display panel according to claim 7,
in the light treatment layer, the optical fibers are arranged in a shape like a Chinese character 'ji' or in a shape like a Chinese character 'pin'.
9. The display panel according to claim 1,
the whole surface of the display area is the curved surface display area.
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 |
|---|---|---|---|
| CN201810481264.1A CN108598130B (en) | 2018-05-18 | 2018-05-18 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810481264.1A CN108598130B (en) | 2018-05-18 | 2018-05-18 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108598130A CN108598130A (en) | 2018-09-28 |
| CN108598130B true CN108598130B (en) | 2021-08-24 |
Family
ID=63632175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810481264.1A Active CN108598130B (en) | 2018-05-18 | 2018-05-18 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108598130B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109445158A (en) * | 2018-12-25 | 2019-03-08 | 武汉天马微电子有限公司 | A kind of display device and electronic equipment |
| CN109991835A (en) * | 2019-02-22 | 2019-07-09 | 努比亚技术有限公司 | A kind of intelligent wearable device |
| CN109920938B (en) * | 2019-03-26 | 2021-03-19 | 京东方科技集团股份有限公司 | OLED display panel and OLED display device |
| WO2020237469A1 (en) * | 2019-05-27 | 2020-12-03 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN117031820A (en) * | 2019-06-12 | 2023-11-10 | 群创光电股份有限公司 | Electronic device |
| CN111106260B (en) * | 2019-12-04 | 2020-12-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| TWI723716B (en) | 2019-12-31 | 2021-04-01 | 宏碁股份有限公司 | Electronic device having non-flat display surface and image display method thereof |
| CN111060196A (en) * | 2020-01-03 | 2020-04-24 | 武汉天马微电子有限公司 | Brightness obtaining equipment and method for display screen |
| CN113257115A (en) * | 2020-02-10 | 2021-08-13 | 宏碁股份有限公司 | Electronic device with non-planar display surface and image display method thereof |
| CN111509020B (en) * | 2020-04-29 | 2022-08-02 | 湖北长江新型显示产业创新中心有限公司 | Flexible display panel and display device |
| CN111508343B (en) * | 2020-05-29 | 2022-03-18 | 武汉天马微电子有限公司 | Display panel and display device |
| CN112086578B (en) * | 2020-09-14 | 2022-05-31 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN111968523A (en) * | 2020-09-16 | 2020-11-20 | 厦门天马微电子有限公司 | Display device and manufacturing method thereof |
| CN112258988B (en) * | 2020-10-28 | 2022-11-29 | 昆山工研院新型平板显示技术中心有限公司 | Curved surface protection cover plate, curved surface display panel and display device |
| CN113112928A (en) * | 2021-03-19 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and OLED display device |
| CN113555394B (en) * | 2021-07-05 | 2023-02-03 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN114153093B (en) * | 2021-12-09 | 2023-04-07 | 武汉华星光电技术有限公司 | Curved surface backlight module and curved surface display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1467787A (en) * | 2002-06-17 | 2004-01-14 | 三星电子株式会社 | Multi-display apparatus having optical path changing device |
| JP2016142865A (en) * | 2015-01-30 | 2016-08-08 | キヤノン株式会社 | Display device |
| CN106252376A (en) * | 2015-06-11 | 2016-12-21 | 三星显示有限公司 | Display device and the method manufacturing display device |
| CN106557206A (en) * | 2016-11-28 | 2017-04-05 | 上海天马有机发光显示技术有限公司 | A kind of touch-control display panel, manufacture method and electronic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102477818B1 (en) * | 2016-01-05 | 2022-12-19 | 삼성디스플레이 주식회사 | Display apparatus |
-
2018
- 2018-05-18 CN CN201810481264.1A patent/CN108598130B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1467787A (en) * | 2002-06-17 | 2004-01-14 | 三星电子株式会社 | Multi-display apparatus having optical path changing device |
| JP2016142865A (en) * | 2015-01-30 | 2016-08-08 | キヤノン株式会社 | Display device |
| CN106252376A (en) * | 2015-06-11 | 2016-12-21 | 三星显示有限公司 | Display device and the method manufacturing display device |
| CN106557206A (en) * | 2016-11-28 | 2017-04-05 | 上海天马有机发光显示技术有限公司 | A kind of touch-control display panel, manufacture method and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108598130A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108598130B (en) | Display panel and display device | |
| US10663641B2 (en) | Display panel and display device | |
| US10748975B2 (en) | Display device | |
| US7287891B1 (en) | Backlight assembly and display device having the same | |
| WO2017071404A1 (en) | Optical structure and manufacturing method thereof, display substrate and display device member | |
| CN107219674B (en) | Display panel and display device | |
| US11387425B2 (en) | Display panel, display apparatus, and methods for making the same | |
| US20140285753A1 (en) | Display device | |
| US10551559B2 (en) | Optical assembly and liquid crystal display device with the optical assembly | |
| JPWO2008155878A1 (en) | Liquid crystal display | |
| WO2017177654A1 (en) | Display device | |
| US20190237523A1 (en) | Organic light-emitting display panel and display apparatus thereof | |
| US20190086732A1 (en) | Liquid crystal grating and display panel | |
| KR20090079779A (en) | Dual Liquid Crystal Display device | |
| JP2014178489A (en) | Display device | |
| JP2002006776A (en) | Image display device | |
| US20040189588A1 (en) | [back light module and liquid crystal display] | |
| KR100459647B1 (en) | Display apparatus | |
| US11616213B2 (en) | Display panel and display device having light extraction structure | |
| US20210247645A1 (en) | Display panel and method of providing the same | |
| CN111158185B (en) | Color film substrate and manufacturing method thereof, display panel and display device | |
| US8599504B2 (en) | Prism sheet having prisms with wave pattern, black light unit including the prism sheet, and liquid crystal display device including the black light unit | |
| US20220005883A1 (en) | Display panel and display device | |
| JP2002023163A (en) | Illumination device, picture display device using the same, liquid crystal television, liquid crystal monitor and liquid crystal information terminal equipment | |
| US20240099090A1 (en) | Display panel and display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |