A display panel

Abstract

The present invention discloses a display panel. The display panel includes a light-emitting component, an isolation column, scattering particles, a first electrode and a second electrode; the light-emitting component includes a plurality of light-emitting units; an isolation column is arranged between two adjacent light-emitting units, and a receiving cavity is formed between the two adjacent isolation columns, and the area of ​​the light-emitting surface of the receiving cavity is smaller than the area of ​​the light-emitting surface of the light-emitting unit; the scattering particles are distributed in the receiving cavity; the first electrode and the second electrode are both located in the receiving cavity and are both connected to the isolation column, and the first electrode and the second electrode are arranged at intervals from each other; when the first electrode and the second electrode are energized, the electrical properties of the first electrode and the second electrode are opposite, and the electrical properties of the scattering particles are the same as those of the first electrode or the second electrode. The present invention controls the energization state of the first electrode and the second electrode to change the distribution state of the scattering particles and control the light-emitting angle of the display panel, thereby conveniently and quickly switching the anti-peeping mode and sharing mode of the display panel.

Description

Technical Field

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

[0002] With the increasing popularity and use of display devices, users are paying more and more attention to the protection of personal information, so the concept of anti-peeping is gradually being taken seriously by users. The commonly used anti-peeping function is achieved by sticking a layer of anti-peeping film on the display, but when you need to share with others, the anti-peeping film is fixed and cannot be switched, resulting in the inability to share with others. Summary of the invention

[0003] Based on the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a display panel that can conveniently and quickly switch between an anti-peeping mode and a sharing mode.

[0004] To achieve the above object, the present invention provides a display panel, comprising:

[0005] A light-emitting assembly, comprising a plurality of light-emitting units;

[0006] An isolation column is arranged between two adjacent light-emitting units, and an accommodation cavity is formed between the two adjacent isolation columns, and the opening area of ​​the accommodation cavity is smaller than the area of ​​the light-emitting surface of the light-emitting unit;

[0007] Scattering particles, distributed in the containing cavity;

[0008] The first electrode and the second electrode are both located in the accommodating cavity and connected to the isolation column, and the first electrode and the second electrode are spaced apart from each other;

[0009] When the first electrode and the second electrode are powered on, the electrical properties of the first electrode and the second electrode are opposite, and the electrical property of the scattering particles is the same as that of the first electrode or the second electrode.

[0010] Optionally, the isolation column further includes a first end surface and a second end surface that are arranged opposite to each other, the first end surface is located between the light-emitting units, and the area of ​​the second end surface is larger than the area of ​​the first end surface.

[0011] Optionally, the isolation column further includes a first isolation column and a second isolation column, one end of the first isolation column is connected to the second isolation column, and the other end is located in the gap between the light-emitting units, and the first electrode and the second electrode are both arranged on the side wall of the first isolation column.

[0012] Optionally, the first isolation column includes a first sub-end surface and a second sub-end surface, the first sub-end surface is located between the light-emitting units, the second sub-end surface is connected to the second isolation column, and the area of ​​the second sub-end surface is greater than that of the first sub-end surface.

[0013] Optionally, the second isolation column includes a third sub-end surface and a fourth sub-end surface that are arranged opposite to each other, the third sub-end surface is connected to the first isolation column, and the area of ​​the fourth sub-end surface is larger than that of the third sub-end surface.

[0014] Optionally, the light-emitting unit further includes a light-emitting layer, an anode layer and a cathode layer, the cathode layer is located on the light-emitting surface side of the light-emitting layer, and the anode layer is located on the backlight surface side of the light-emitting layer.

[0015] Optionally, a first insulating layer is further included, one side of the first insulating layer is connected to the cathode layer, and the other side of the first insulating layer is connected to the first electrode and the second electrode.

[0016] Optionally, a second insulating layer is further included, the second insulating layer is located between the anode layers of adjacent light-emitting units, and one side of the second insulating layer is connected to the isolation column.

[0017] Optionally, a dispersion medium is further included, the dispersion medium is located in the containing cavity, and the scattering particles are distributed in the dispersion medium.

[0018] Optionally, a packaging layer is further included, and the packaging layer covers the light emitting surface of the accommodating cavity and the second end surface of the isolation column.

[0019] Compared with the prior art, the beneficial effects of the present invention include: providing a display panel, including a light-emitting component, an isolation column, scattering particles, a first electrode and a second electrode; the light-emitting component includes a plurality of light-emitting units; the isolation column is arranged between two adjacent light-emitting units, and a receiving cavity is formed between the two adjacent isolation columns, and the area of ​​the light-emitting surface of the receiving cavity is smaller than the area of ​​the light-emitting surface of the light-emitting unit; the scattering particles are distributed in the receiving cavity; the first electrode and the second electrode are both located in the receiving cavity and are both connected to the isolation column, and the first electrode and the second electrode are arranged at intervals from each other; when the first electrode and the second electrode are energized, the electrical properties of the first electrode and the second electrode are opposite, and the electrical property of the scattering particles is the same as that of the first electrode or the second electrode. When the display panel of the present invention is in the anti-peeping mode, the first electrode and the second electrode are energized and opposite voltages are applied. At this time, an electric field is formed between the first electrode and the second electrode. The charged scattering particles are adsorbed on the first electrode or the second electrode under the action of the electric field. The light emitted by the light-emitting component in the forward direction can only be emitted from the front of the opening of the accommodating cavity, and the isolation column blocks the large-angle light emitted by the light-emitting component to the side. Therefore, only the front viewer can receive the small-angle light emitted from the opening of the accommodating cavity, and the viewer on the side cannot receive the large-angle light emitted by the light-emitting component, thereby achieving the anti-peeping effect. When the display panel is in the sharing mode, the first electrode and the second electrode are not applied with voltage. At this time, the scattering particles are dispersed under the action of charge repulsion due to the same electrical properties and distributed in the accommodating cavity. The light of the light-emitting component is scattered from all directions of the opening of the accommodating cavity by the scattering particles. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing. The present invention controls the power-on state of the first electrode and the second electrode, thereby conveniently and quickly switching the anti-peeping mode and sharing mode of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a schematic diagram of the structure of the display panel in anti-peeping mode according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of a display panel sharing mode according to an embodiment of the present invention;

[0023] Figure 3 is a side structural diagram of an isolation column according to an embodiment of the present invention;

[0024] Figure 4is a side structural diagram of a first isolation column and a second isolation column according to an embodiment of the present invention;

[0025] Figure 5 It is an exploded side view of the first isolation column and the second isolation column of an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments in which the present invention can be implemented. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. At the same time, the terms "first" and "second" in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] An embodiment of the present invention provides a display panel, such as Figure 1 As shown, it includes a light-emitting component, an isolation column 2, scattering particles 3, a first electrode 4 and a second electrode 5. The light-emitting component includes a plurality of light-emitting units 1; the isolation column 2 is arranged between two adjacent light-emitting units 1, and a receiving cavity A is formed between the two adjacent isolation columns 2, and the area of ​​the light-emitting surface of the receiving cavity A is smaller than the area of ​​the light-emitting surface of the light-emitting unit 1; the scattering particles 3 are distributed in the receiving cavity A; the first electrode 4 and the second electrode 5 are both located in the receiving cavity A and are both connected to the isolation column 2, and the first electrode 4 and the second electrode 5 are arranged at intervals from each other; when the first electrode 4 and the second electrode 5 are powered on, the electrical properties of the first electrode 4 and the second electrode 5 are opposite, and the electrical properties of the scattering particles 3 are the same as those of the first electrode 4 or the second electrode 5.

[0028] When the display panel of this embodiment is in the anti-peeping mode, the first electrode 4 and the second electrode 5 are powered on and opposite voltages are applied thereto. At this time, an electric field is formed between the first electrode 4 and the second electrode 5, such as Figure 1As shown, the charged scattering particles 3 are adsorbed on the first electrode 4 or the second electrode 5 under the action of the electric field, and the light emitted by the light-emitting component in the forward direction can only be emitted from the front of the opening (light-emitting surface) of the accommodating cavity A, while the isolation column 2 blocks the large-angle light emitted to the side by the light-emitting component. Therefore, only the front viewer can receive the small-angle light emitted from the opening of the accommodating cavity A, and the side viewer cannot receive the large-angle light emitted by the light-emitting component, thereby achieving an anti-peeping effect.

[0029] When the display panel of the present embodiment is in the sharing mode, no voltage is applied to the first electrode 4 and the second electrode 5. Figure 2 As shown, at this time, the scattering particles 3 are dispersed due to the same electrical properties under the action of charge repulsion and are distributed in the accommodating cavity A. The light of the light-emitting component is scattered by the scattering particles 3 and scattered from all directions of the opening of the accommodating cavity A. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing.

[0030] In this embodiment, the power-on state of the first electrode 4 and the second electrode 5 is controlled to change the distribution state of the scattering particles 3 and control the light emission angle of the display panel, thereby conveniently and quickly switching the anti-peeping mode and the sharing mode of the display panel.

[0031] In one implementation of this embodiment, the scattering particles 3 may be white, which can enhance the light scattering effect of the scattering particles 3, increase the light emission angle of the opening of the accommodating cavity A, and enable the display panel to have a larger viewing angle in the sharing mode. The isolation column 2 may be made of a negative photoresist material, which can prevent light from being emitted from one side of the isolation column 2 and affecting the anti-peeping effect. The light-emitting component may be an OLED (organic light-emitting diode), and the light-emitting unit 1 may include a red light-emitting diode R, a green light-emitting diode G, and a blue light-emitting diode B.

[0032] In one implementation of this embodiment, the display panel further includes a substrate 9 , and the light-emitting components are arranged in an array on the substrate 9 .

[0033] In one implementation of this embodiment, Figure 3 As shown, the isolation column 2 also includes a first end face 201 and a second end face 202 that are arranged opposite to each other, the first end face 201 is located between the light-emitting units 1, and the area of ​​the second end face 202 is larger than the area of ​​the first end face 201. The second end face 202 is close to the light-emitting surface, and the diameter of the isolation column 2 gradually increases along the positive light-emitting direction. Specifically, the cross-section of the isolation column 2 can be an inverted trapezoid, and the accommodating cavity A is a regular trapezoid. In this way, the isolation column 2 can block more lateral light and enhance the anti-peeping effect of the display panel.

[0034] In one implementation of this embodiment, Figure 4As shown, the isolation column 2 further includes a first isolation column 21 and a second isolation column 22. One end of the first isolation column 21 is connected to the second isolation column 22, and the other end is located in the gap between the light-emitting units 1. The first electrode 4 and the second electrode 5 are both arranged on the side wall of the first isolation column 21. Based on the light emission direction in the figure, the first isolation column 21 is located at the bottom, and the second isolation column 22 is located at the top. In this way, in the anti-peeping mode, the scattering particles 3 are concentrated in the lower part of the accommodating cavity A, and away from the opening at the upper part of the accommodating cavity A, so as to avoid scattering of the scattering particles 3 at the opening, so that the light is emitted from multiple directions at the opening of the accommodating cavity A, thereby affecting the anti-peeping effect.

[0035] In one implementation of this embodiment, Figure 5 As shown, the first isolation column 21 includes a first sub-end face 211 and a second sub-end face 212 that are arranged opposite to each other, the first sub-end face 211 is located between the light-emitting units 1, the second sub-end face 212 is connected to the second isolation column 22, and the area of ​​the second sub-end face 212 is larger than the area of ​​the first sub-end face 211. Specifically, the cross-section of the first isolation column 21 is an inverted trapezoid, which can further enhance the light-shielding effect of the isolation column 2.

[0036] In one implementation of this embodiment, Figure 5 As shown, the second isolation column 22 includes a third sub-end face 221 and a fourth sub-end face 222 that are arranged opposite to each other, the third sub-end face 221 is connected to the first isolation column 21, and the area of ​​the fourth sub-end face 222 is larger than the area of ​​the third sub-end face 221. Specifically, the cross-section of the second isolation column 22 is an inverted trapezoid, which can further enhance the light shielding effect of the isolation column 2.

[0037] In one implementation of this embodiment, the light-emitting unit 1 further includes a light-emitting layer 11, an anode layer 12 and a cathode layer 13, wherein the cathode layer 13 is located on the light-emitting side of the light-emitting layer 11, and the anode layer 12 is located on the backlight side of the light-emitting layer 11. The light-emitting state of the light-emitting layer 11 is controlled by the cathode layer 13 and the anode layer 12.

[0038] In one implementation of this embodiment, the display panel further includes a first insulating layer 6, one side of the first insulating layer 6 is connected to the cathode layer 13, and the other side is connected to the first electrode 4 and the second electrode 5. This can prevent the first electrode 4, the second electrode 5 and the cathode layer 13 from interfering with each other.

[0039] In one implementation of this embodiment, the display panel further includes a second insulating layer 7, which is located between anode layers 12 of adjacent light-emitting units 1, and one side of the second insulating layer 7 is connected to the isolation column 2. This can prevent adjacent anode layers 12 from interfering with each other.

[0040] In one implementation of this embodiment, the display panel further includes a dispersion medium (not shown), the dispersion medium is located in the accommodating cavity A, and the scattering particles 3 are distributed in the dispersion medium. The scattering particles 3 can move better in the dispersion medium, and the display panel can complete the mode switching more timely when switching the anti-peeping mode or the sharing mode.

[0041] In one implementation of this embodiment, the display panel further includes an encapsulation layer 8, which covers the light emitting surface of the accommodating cavity A and the second end surface 202 of the isolation column 2. The encapsulation layer 8 can protect the display panel.

[0042] In one implementation of this embodiment, the first electrode 4 and the second electrode 5 can be deposited on the sidewall of the first isolation column 21 by ALD (atomic layer deposition), and then the second isolation column 22 is prepared above the first isolation column 21 by negative photoresist. The material of the first electrode 4 and the second electrode 5 can be a transparent conductive material such as ITO.

[0043] In one implementation of this embodiment, when the display panel is switched to the anti-peeping mode, the first electrode 4 is positively charged, the second electrode 5 is negatively charged, and the scattering particles 3 are positively charged. At this time, an electric field is formed between the first electrode 4 and the second electrode 5, and the charged scattering particles 3 are adsorbed on the second electrode 5 on the side wall of the first isolation column 21 under the action of the electric field. The light emitted by the light-emitting unit 1 in the forward direction can only be emitted in the forward direction from the opening of the accommodating cavity A, and the isolation column 2 blocks the large-angle light emitted by the light-emitting unit 1 to the side. Therefore, only the front viewer can receive the small-angle light emitted from the front of the accommodating cavity A, and the side viewer cannot receive the large-angle light emitted by the light-emitting component, thereby achieving an anti-peeping effect.

[0044] When the display panel is in sharing mode, no voltage is applied to the first electrode 4 and the second electrode 5. At this time, the scattering particles 3 are dispersed due to the same electrical properties (all positively charged) under the action of charge repulsion and are distributed in the accommodating cavity A. The light of the light-emitting component is scattered by the scattering particles 3 and scattered from all directions of the opening of the accommodating cavity A. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing.

[0045] In one implementation of this embodiment, when the display panel is switched to the anti-peeping mode, the first electrode 4 is negatively charged, the second electrode 5 is positively charged, and the scattering particles 3 are positively charged. At this time, an electric field is formed between the first electrode 4 and the second electrode 5, and the charged scattering particles 3 are adsorbed on the first electrode 4 on the side wall of the first isolation column 21 under the action of the electric field. The light emitted by the light-emitting unit 1 in the forward direction can only be emitted in the forward direction from the opening of the accommodating cavity A, and the isolation column 2 blocks the large-angle light emitted by the light-emitting unit 1 to the side. Therefore, only the front viewer can receive the small-angle light emitted from the front of the accommodating cavity A, and the side viewer cannot receive the large-angle light emitted by the light-emitting component, thereby achieving an anti-peeping effect.

[0046] When the display panel is in sharing mode, no voltage is applied to the first electrode 4 and the second electrode 5. At this time, the scattering particles 3 are dispersed due to the same electrical properties (all positively charged) under the action of charge repulsion and are distributed in the accommodating cavity A. The light of the light-emitting component is scattered by the scattering particles 3 and scattered from all directions of the opening of the accommodating cavity A. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing.

[0047] In one implementation of this embodiment, when the display panel is switched to the anti-peeping mode, the first electrode 4 is positively charged, the second electrode 5 is negatively charged, and the scattering particles 3 are negatively charged. At this time, an electric field is formed between the first electrode 4 and the second electrode 5, and the charged scattering particles 3 are adsorbed on the first electrode 4 on the side wall of the first isolation column 21 under the action of the electric field. The light emitted by the light-emitting unit 1 in the forward direction can only be emitted in the forward direction from the opening of the accommodating cavity A, and the isolation column 2 blocks the large-angle light emitted by the light-emitting unit 1 to the side. Therefore, only the front viewer can receive the small-angle light emitted from the front of the accommodating cavity A, and the side viewer cannot receive the large-angle light emitted by the light-emitting component, thereby achieving an anti-peeping effect.

[0048] When the display panel is in sharing mode, no voltage is applied to the first electrode 4 and the second electrode 5. At this time, the scattering particles 3 are dispersed due to the same electrical properties (all negatively charged) under the action of charge repulsion and are distributed in the accommodating cavity A. The light of the light-emitting component is scattered by the scattering particles 3 and scattered from all directions of the opening of the accommodating cavity A. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing.

[0049] In one implementation of this embodiment, when the display panel is switched to the anti-peeping mode, the first electrode 4 is negatively charged, the second electrode 5 is positively charged, and the scattering particles 3 are negatively charged. At this time, an electric field is formed between the first electrode 4 and the second electrode 5, and the charged scattering particles 3 are adsorbed on the second electrode 5 on the side wall of the first isolation column 21 under the action of the electric field. The light emitted by the light-emitting unit 1 in the forward direction can only be emitted in the forward direction from the opening of the accommodating cavity A, and the isolation column 2 blocks the large-angle light emitted by the light-emitting unit 1 to the side. Therefore, only the front viewer can receive the small-angle light emitted from the front of the accommodating cavity A, and the side viewer cannot receive the large-angle light emitted by the light-emitting component, thereby achieving an anti-peeping effect.

[0050] When the display panel is in sharing mode, no voltage is applied to the first electrode 4 and the second electrode 5. At this time, the scattering particles 3 are dispersed due to the same electrical properties (all negatively charged) under the action of charge repulsion and are distributed in the accommodating cavity A. The light of the light-emitting component is scattered by the scattering particles 3 and scattered from all directions of the opening of the accommodating cavity A. Viewers at different angles can receive the light, thereby achieving the effect of shared viewing.

[0051] In order to switch between the anti-peeping mode and the sharing mode, the prior art sets a dimming box on the display panel to switch between the anti-peeping mode and the sharing mode, but this method will greatly increase the thickness of the display. However, this embodiment controls the power-on state of the first electrode 4 and the second electrode 5 to change the distribution state of the charged scattering particles 3 and control the light output angle of the display panel. While not increasing the thickness of the display, it can also conveniently and quickly switch the anti-peeping mode and the sharing mode of the display panel.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: At least: A light-emitting assembly, comprising a plurality of light-emitting units; An isolation column, wherein the isolation column is made of a negative photoresist material, the isolation column is arranged between two adjacent light-emitting units, and an accommodation cavity is formed between the two adjacent isolation columns, and the opening area of ​​the accommodation cavity is smaller than the area of ​​the light-emitting surface of the light-emitting unit; Scattering particles are distributed in the containing cavity; A first electrode and a second electrode are both located in the accommodation cavity and are both arranged on the side wall of the isolation column, and the first electrode and the second electrode are arranged to be spaced from each other; When the first electrode and the second electrode are powered on, the electrical properties of the first electrode and the second electrode are opposite, and the electrical property of the scattering particles is the same as that of the first electrode or the second electrode.

2. The display panel according to claim 1, characterized in that: The isolation column further includes a first end surface and a second end surface that are arranged opposite to each other, the first end surface is located between the light emitting units, and the area of ​​the second end surface is greater than that of the first end surface.

3. The display panel according to claim 1, characterized in that: The isolation column also includes a first isolation column and a second isolation column. One end of the first isolation column is connected to the second isolation column, and the other end is located in the gap between the light-emitting units. The first electrode and the second electrode are both arranged on the side wall of the first isolation column.

4. The display panel according to claim 3, characterized in that: The first isolation column includes a first sub-end surface and a second sub-end surface, the first sub-end surface is located between the light-emitting units, the second sub-end surface is connected to the second isolation column, and the area of ​​the second sub-end surface is greater than that of the first sub-end surface.

5. The display panel according to claim 3, characterized in that: The second isolation column includes a third sub-end surface and a fourth sub-end surface that are arranged opposite to each other, the third sub-end surface is connected to the first isolation column, and the area of ​​the fourth sub-end surface is larger than that of the third sub-end surface.

6. The display panel according to claim 1, characterized in that: The light-emitting unit further comprises a light-emitting layer, an anode layer and a cathode layer. The cathode layer is located at a light-emitting surface side of the light-emitting layer, and the anode layer is located at a backlight surface side of the light-emitting layer.

7. The display panel according to claim 6, characterized in that: It also includes a first insulating layer, one side of the first insulating layer is connected to the cathode layer, and the other side of the first insulating layer is connected to the first electrode and the second electrode.

8. The display panel according to claim 6, characterized in that: It also includes a second insulating layer, which is located between the anode layers of adjacent light-emitting units, and one side of the second insulating layer is connected to the isolation column.

9. The display panel according to claim 1, characterized in that: It also includes a dispersion medium, which is located in the containing cavity, and the scattering particles are distributed in the dispersion medium.

10. The display panel according to claim 1, characterized in that: It also includes a packaging layer, which covers the light-emitting surface of the accommodating cavity and the second end surface of the isolation column.

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