LED Panel

Abstract

The embodiment of the present application discloses a light-emitting diode panel; a first reflection wall is arranged on a substrate, and the first reflection wall extends along a first direction; a second reflection wall is arranged on a substrate, and the second reflection wall extends along a second direction, and the first reflection wall and the second reflection wall are arranged crosswise to form a plurality of reflection cavities; an LED device is arranged in the reflection cavity; the LED device has a first light-emitting angle in the first direction, and the LED device has a second light-emitting angle in the second direction, and the first light-emitting angle is greater than the second light-emitting angle; in the first direction, the distance from the center of the LED device to the second reflection wall is a first distance; in the second direction, the distance from the center of the LED device to the first reflection wall is a second distance; and the first distance is greater than the second distance. The light-emitting diode panel of the embodiment of the present application is arranged at reflection walls at different distances according to different light-emitting angles of the LED device, so as to improve the front view brightness of the LED device.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a light emitting diode panel. Background Art

[0002] In the process of research and practice of the prior art, the inventors of the present application discovered that the industry has currently taken various measures to improve the light efficiency of light-emitting diode panels, such as adding a layer of white high-reflectivity wall structure on the surface of the substrate, which can effectively utilize the large-angle light of the light-emitting diode (LED) and converge the light-emitting angle, thereby improving the light efficiency of the LED panel; however, due to the different light-emitting angles of Mini-LED devices in the x and y directions, the light extraction efficiency of the LED device needs to be improved. Summary of the invention

[0003] The embodiment of the present application provides a light emitting diode panel, which can improve the light output effect.

[0004] The embodiment of the present application provides a light emitting diode panel, which includes:

[0005] substrate;

[0006] A first reflection wall, wherein the first reflection wall is disposed on the substrate and extends along a first direction;

[0007] A second reflection wall, wherein the second reflection wall is disposed on the substrate, the second reflection wall extends along a second direction, and the first reflection wall and the second reflection wall are cross-arranged to form a plurality of reflection cavities;

[0008] An LED device, wherein the LED device is disposed in the reflective cavity; the LED device has a first light-emitting angle in the first direction, and the LED device has a second light-emitting angle in the second direction, and the first light-emitting angle is greater than the second light-emitting angle;

[0009] In the first direction, the distance from the center of the LED device to the second reflective wall is a first distance; in the second direction, the distance from the center of the LED device to the first reflective wall is a second distance; the first distance is greater than the second distance.

[0010] Optionally, in some embodiments of the present application, the first reflective wall includes a first side surface facing the LED device, the first side surface includes a first reflective surface connected to the substrate; in a vertical cross section along the second direction, an extension trajectory of the first reflective surface is a portion of a first parabola;

[0011] In a vertical cross section along the second direction, the first reflective surface and the substrate have a first intersection, and the second distance is the distance from the center of the LED device to the first intersection;

[0012] The second reflective wall includes a second side surface facing the LED device, and the second side surface includes a second reflective surface connected to the substrate; in a vertical cross section along the first direction, an extension trajectory of the second reflective surface is a portion of a second parabola;

[0013] In a vertical cross section along the first direction, the second reflective surface has a second intersection with the substrate, and the first distance is a distance from the center of the LED device to the second intersection.

[0014] Optionally, in some embodiments of the present application, the center of the LED device is located at the focus of the first parabola and the second parabola at the same time.

[0015] Optionally, in some embodiments of the present application, the opening of the first parabola is smaller than the opening of the second parabola.

[0016] Optionally, in some embodiments of the present application, the first parabola satisfies Formula 1:

[0017] y1=a1*x1 2 +b1, a1>0, b1<0; the second parabola satisfies formula 2: y2=a2*x2 2 +b2,0<

[0018] a2<a1, b2=b1.

[0019] Optionally, in some embodiments of the present application, the first reflective wall includes two first side surfaces, and in a vertical cross-section along the second direction, the two first side surfaces are symmetrically arranged about a center line of the first reflective wall.

[0020] Optionally, in some embodiments of the present application, the first side surface further includes a third reflective surface connected to the first reflective surface on a side away from the substrate, and the two third reflective surfaces are connected on a side away from the substrate.

[0021] Optionally, in some embodiments of the present application, in the first reflection wall, the width of the first reflection wall decreases from a side close to the substrate to a side away from the substrate;

[0022] In the second reflection wall, the width of the second reflection wall decreases gradually from a side close to the substrate to a side away from the substrate.

[0023] Optionally, in some embodiments of the present application, the width of the first reflective wall is greater than the width of the second reflective wall.

[0024] Optionally, in some embodiments of the present application, the first reflection wall and the second reflection wall are made of the same material and are integrally formed.

[0025] The light-emitting diode panel of the embodiment of the present application includes a substrate, a first reflection wall, a second reflection wall and an LED device; the first reflection wall is arranged on the substrate, and the first reflection wall extends along a first direction; the second reflection wall is arranged on the substrate, and the second reflection wall extends along a second direction, and the first reflection wall and the second reflection wall are cross-arranged to form a plurality of reflection cavities; the LED device is arranged in the reflection cavity; the LED device has a first light-emitting angle in the first direction, and the LED device has a second light-emitting angle in the second direction, and the first light-emitting angle is greater than the second light-emitting angle; in the first direction, the distance from the center of the LED device to the second reflection wall is a first distance; in the second direction, the distance from the center of the LED device to the first reflection wall is a second distance; the first distance is greater than the second distance.

[0026] That is, the light-emitting diode panel of the embodiment of the present application is arranged on the reflective wall at different distances according to the different light-emitting angles of the LED device, so as to improve the front-view brightness of the LED device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is a schematic diagram of a top view of the structure of a light emitting diode panel provided in an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of the light emitting angle of the LED device in the first direction;

[0030] Figure 3 is a schematic diagram of the light emitting angle of the LED device in the second direction;

[0031] Figure 4 yes Figure 1 Schematic diagram of the cross section along line AA;

[0032] Figure 5 yes Figure 1 Schematic diagram of the cross section along the CC line;

[0033] Figure 6 It is a schematic diagram of the first parabola and the second parabola in the coordinate system. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0035] The embodiment of the present application provides a light emitting diode panel, which is described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0036] The embodiment of the present application provides a light emitting diode panel 100 , which includes a substrate 11 , a first reflection wall 12 , a second reflection wall 13 and an LED device 14 .

[0037] The first reflection wall 12 is disposed on the substrate 11. The first reflection wall 12 extends along a first direction h. The second reflection wall 13 is disposed on the substrate 11. The second reflection wall 13 extends along a second direction j. The first reflection wall 12 and the second reflection wall 13 are cross-arranged to form a plurality of reflection cavities fs.

[0038] The LED device 14 is disposed in the reflective cavity fs. The LED device 14 has a first light emitting angle in a first direction h. The LED device 14 has a second light emitting angle in a second direction j. The first light emitting angle is greater than the second light emitting angle.

[0039] In the first direction h, the distance from the center O of the LED device 14 to the second reflective wall 13 is a first distance d1. In the second direction j, the distance from the center O of the LED device 14 to the first reflective wall 12 is a second distance d2. The first distance d1 is greater than the second distance d2.

[0040] The light emitting diode panel 100 of the embodiment of the present application is arranged at different distances from the reflective wall according to the different light emitting angles of the LED device 14 to improve the frontal brightness of the LED device 14. When the light shape of the LED device 14 is large, the reflective wall is arranged at a longer distance from the center O of the LED device 14, so that the large-angle light can be better forwardly reflected; on the contrary, when the light shape of the LED device 14 is small, the reflective wall is arranged at a closer distance from the center O of the LED device 14; Figure 2and Figure 3 shown.

[0041] Optionally, the substrate 11 includes a base and a driving circuit layer disposed on the base. The base may be flexible or rigid, and may be, for example, one of polyimide, silicon dioxide, polyethylene, polypropylene, polystyrene, polylactic acid, polyethylene diphthalate, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyether sulfone, aromatic fluorotoluene containing polyarylate, polycyclic olefin, glass, ceramic or sapphire.

[0042] Optionally, the first reflection wall 12 and the second reflection wall 13 are made of the same material and are integrally formed. Such a configuration saves process steps and materials.

[0043] Optionally, the materials of the first reflection wall 12 and the second reflection wall 13 can be materials such as glue or ink with high reflectivity.

[0044] In some embodiments, the first reflective wall 12 and the second reflective wall 13 may be respectively made of a non-reflective material as a main body, and then a layer of reflective material is sprayed on the main body.

[0045] The light patterns of the LED device 14 in the first direction h and the second direction j are different, and the optional LED device can be a rectangular, elliptical, or other shape with a long and short axis. For example, in a rectangular LED device 14, the short axis direction has a larger light-emitting angle than the long axis direction.

[0046] Optional, such as Figure 4 As shown, the first reflection wall 12 includes a first side surface cm1 facing the LED device 14. The first side surface cm1 includes a first reflection surface fm1 connected to the substrate 11. In a vertical section along the second direction j, the extension trajectory of the first reflection surface fm1 is a portion of the first parabola p1.

[0047] In the vertical cross section along the second direction j, the first reflective surface fm1 and the substrate 11 have a first intersection M. The second distance d2 is the distance from the center O of the LED device 14 to the first intersection M.

[0048] Optionally, the first reflection wall 12 includes two first side surfaces cm1, and in a vertical section along the second direction j, the two first side surfaces cm1 are symmetrically arranged about a center line zx1 of the first reflection wall 12. Arranging the vertical section of the first reflection wall 12 as an axisymmetric pattern facilitates layout and preparation of the first reflection wall 12.

[0049] Optionally, the first side surface cm1 may further include a third reflecting surface fm3 connected to the first reflecting surface fm1 at a side away from the substrate 11 , and the two third reflecting surfaces fm3 are connected at sides away from the substrate 11 .

[0050] The provision of the third reflective surface fm3 improves the reflection efficiency of the first reflective wall 12 on the light emitted by the LED device 14 .

[0051] Optionally, the two third reflection surfaces fm3 are smoothly connected at the sides away from the substrate 11. The third reflection surface fm3 is smoothly connected to the first reflection surface fm1.

[0052] Optionally, in the first reflection wall 12 , the width k1 of the first reflection wall 12 decreases from the side close to the substrate 11 to the side far away from the substrate 11 .

[0053] Optionally, the first reflection wall 12 may be in a trapezoidal shape, a triangular shape, a trapezoidal shape or other shapes.

[0054] Optionally, a first reflection wall 12 is disposed on opposite sides of an LED device 14. In a vertical cross section, the patterns of the two first reflection walls 12 are symmetrically disposed about the center line of the LED device 14. Such an arrangement can improve the front view brightness of the LED device 14.

[0055] like Figure 5 As shown, the second reflection wall 13 includes a second side surface cm2 facing the LED device 14. The second side surface cm2 includes a second reflection surface fm2 connected to the substrate 11. In a vertical section along the first direction h, the extension trajectory of the second reflection surface fm2 is a portion of the second parabola p2.

[0056] In the vertical cross section along the first direction h, the second reflective surface fm2 has a second intersection N with the substrate 11. The first distance d1 is the distance from the center O of the LED device 14 to the second intersection N.

[0057] Optionally, the second reflection wall 13 includes two second side surfaces cm2, and in a vertical section along the first direction h, the two second side surfaces cm2 are symmetrically arranged about a center line zx2 of the second reflection wall 13. The vertical section of the second reflection wall 13 is arranged as an axisymmetric pattern, which is convenient for layout and preparation of the second reflection wall 13.

[0058] Optionally, the second side surface cm2 may further include a fourth reflection surface fm4 connected to the side of the second reflection surface fm2 away from the substrate 11, and the sides of the two fourth reflection surfaces fm4 away from the substrate 11 are connected.

[0059] The provision of the fourth reflection surface fm4 improves the reflection efficiency of the second reflection wall 13 on the light emitted by the LED device 14 .

[0060] Optionally, the two fourth reflection surfaces fm4 are smoothly connected at the sides away from the substrate 11. The third reflection surface fm3 is smoothly connected to the first reflection surface fm1.

[0061] In the second reflection wall 13 , the width k2 of the second reflection wall 13 decreases gradually from the side close to the substrate 11 to the side far away from the substrate 11 .

[0062] Optionally, the second reflection wall 13 may be in a trapezoidal shape, a triangular shape, a quasi-trapezoidal shape, a quasi-triangular shape or other shapes.

[0063] Optionally, two opposite sides of an LED device 14 are provided with a second reflection wall 13. In a vertical cross section, the patterns of the two second reflection walls 13 are symmetrically arranged about the center line of the LED device 14. Such an arrangement can improve the front view brightness of the LED device 14.

[0064] Please refer to Figure 6 Optionally, the center O of the LED device 14 is located at the focus of the first parabola p1 and the second parabola p2 at the same time.

[0065] A vertical plane coordinate system is established, with the origin Q of the coordinate system as the focus of the first parabola p1 and the second parabola p2. The center O of the LED device 14 coincides with the origin Q.

[0066] In this embodiment, the center O of the LED device 14 coincides with the focus of the first parabola p1 and the second parabola p2, thereby further improving the front-view brightness of the LED device 14 .

[0067] Optionally, the opening of the first parabola p1 is smaller than the opening of the second parabola p2.

[0068] It should be noted that the comparison between the openings of the first parabola p1 and the second parabola p2 is performed at the same height.

[0069] That is, when the light shape (first light-emitting angle) of the LED device 14 is larger, the distance between the reflective wall and the center O of the LED device 14 is farther, and the opening of the parabola formed by it is larger, which can better forward reflect light at a large angle; conversely, when the light shape (second light-emitting angle) of the LED device 14 is smaller, the distance between the reflective wall and the center O of the LED device 14 is closer, and the opening of the parabola formed by it is narrower.

[0070] Optionally, the first parabola p1 satisfies formula 1: y1 = a1 * x1 2 +b1, a1>0, b1<0. The second parabola p2 satisfies formula 2: y2=a2*x2 2 +b2, 0<a2<a1, b2=b1.

[0071] It should be noted that the larger the values ​​of a1 and a2, the smaller the opening of the parabola.

[0072] Optionally, the width of the first reflection wall 12 is greater than the width of the second reflection wall 13. This arrangement can save space and achieve high resolution by reducing the width of the second reflection wall while ensuring that the second reflection surface fm2 of the second reflection wall 13 satisfies the second parabola.

[0073] The light-emitting diode panel of the embodiment of the present application includes a substrate, a first reflection wall, a second reflection wall and an LED device; the first reflection wall is arranged on the substrate, and the first reflection wall extends along a first direction; the second reflection wall is arranged on the substrate, and the second reflection wall extends along a second direction, and the first reflection wall and the second reflection wall are cross-arranged to form a plurality of reflection cavities; the LED device is arranged in the reflection cavity; the LED device has a first light-emitting angle in the first direction, and the LED device has a second light-emitting angle in the second direction, and the first light-emitting angle is greater than the second light-emitting angle; in the first direction, the distance from the center of the LED device to the second reflection wall is a first distance; in the second direction, the distance from the center of the LED device to the first reflection wall is a second distance; the first distance is greater than the second distance.

[0074] That is, the light-emitting diode panel of the embodiment of the present application is arranged on the reflective wall at different distances according to the different light-emitting angles of the LED device, so as to improve the front-view brightness of the LED device.

[0075] The above is a detailed introduction to a light-emitting diode panel provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A light emitting diode panel, characterized in that: include: substrate; A first reflection wall, wherein the first reflection wall is disposed on the substrate and extends along a first direction; A second reflection wall, wherein the second reflection wall is disposed on the substrate, the second reflection wall extends along a second direction, and the first reflection wall and the second reflection wall are cross-arranged to form a plurality of reflection cavities; An LED device, wherein the LED device is disposed in the reflective cavity; the LED device has a first light-emitting angle in the first direction, and the LED device has a second light-emitting angle in the second direction, and the first light-emitting angle is greater than the second light-emitting angle; In the first direction, the distance from the center of the LED device to the second reflective wall is a first distance; in the second direction, the distance from the center of the LED device to the first reflective wall is a second distance; the first distance is greater than the second distance.

2. The light emitting diode panel according to claim 1, characterized in that: The first reflection wall includes a first side surface facing the LED device, the first side surface includes a first reflection surface connected to the substrate; in a vertical cross section along the second direction, an extension trajectory of the first reflection surface is a portion of a first parabola; In a vertical cross section along the second direction, the first reflective surface and the substrate have a first intersection, and the second distance is the distance from the center of the LED device to the first intersection; The second reflective wall includes a second side surface facing the LED device, and the second side surface includes a second reflective surface connected to the substrate; in a vertical cross section along the first direction, an extension trajectory of the second reflective surface is a portion of a second parabola; In a vertical cross section along the first direction, the second reflective surface has a second intersection with the substrate, and the first distance is a distance from the center of the LED device to the second intersection.

3. The light emitting diode panel according to claim 2, characterized in that: The center of the LED device is located at the focus of the first parabola and the second parabola at the same time.

4. The light emitting diode panel according to claim 2, characterized in that: The opening of the first parabola is smaller than the opening of the second parabola.

5. The light emitting diode panel according to claim 3, characterized in that: The first parabola satisfies Formula 1: y1 = a1 * x1 2 +b1, a1>0, b1<0; the second parabola satisfies formula 2: y2=a2*x2 2 +b2, 0<a2<a1, b2=b1.

6. The light emitting diode panel according to claim 2, characterized in that: The first reflection wall includes two first side surfaces, and in a vertical cross section along the second direction, the two first side surfaces are symmetrically arranged about a center line of the first reflection wall.

7. The light emitting diode panel according to claim 6, characterized in that: The first side surface further includes a third reflecting surface connected to a side of the first reflecting surface away from the substrate, and the two third reflecting surfaces are connected at sides away from the substrate.

8. The light emitting diode panel according to claim 1, characterized in that: In the first reflection wall, the width of the first reflection wall decreases from a side close to the substrate to a side away from the substrate; In the second reflection wall, the width of the second reflection wall decreases gradually from a side close to the substrate to a side away from the substrate.

9. The light emitting diode panel according to claim 8, characterized in that: The width of the first reflection wall is greater than the width of the second reflection wall.

10. The light emitting diode panel according to claim 1, characterized in that: The first reflection wall and the second reflection wall are made of the same material and are integrally formed.

Images