Light emitting structure and light emitting structure

Abstract

According to the light-emitting structure and the light-emitting structure provided by the invention, the light-emitting surface of the substrate is provided with the plurality of first grooves which are distributed at intervals so as to carry out light isolation on the light rays emitted into the substrate, so that the light crosstalk phenomenon is reduced, and the contrast ratio of the light emitted from the substrate is improved.

Description

Technical Field

[0001] The present invention relates to the field of light-emitting product packaging, and in particular to a light-emitting structure and a light-emitting structure. Background Art

[0002] The method of obtaining white light LED by combining LED chips with phosphors is called phosphor conversion LED. Compared with multi-chip white light LEDs, it has advantages in control circuits, production costs, heat dissipation, etc., and dominates the current LED market.

[0003] In the prior art, fluorescent glue or fluorescent ceramic substrate is usually directly bonded to the light-emitting layer of the LED, and the light is emitted from the entire surface of the fluorescent layer. However, this method will cause light emitted by adjacent LED chips to produce optical crosstalk, resulting in poor contrast and unclear emitted light.

[0004] Therefore, providing a light output structure that can improve the contrast of emitted light has become a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a light emitting structure and a light emitting structure, which solve the problems of poor light contrast and unclear light emission.

[0006] According to a first aspect of the present invention, there is provided a light output structure, comprising:

[0007] A substrate, the substrate comprising a first surface and a second surface; wherein the first surface and the second surface are two opposite surfaces;

[0008] A plurality of first grooves are provided on the first surface of the substrate, and the plurality of first grooves are arranged at intervals; wherein the first surface of the first substrate is a light emitting surface.

[0009] Optionally, the depth of the first groove is greater than 10 microns.

[0010] Optionally, the light output structure further includes:

[0011] A plurality of second grooves, wherein the second grooves are arranged on the second surface of the substrate, and each of the second grooves corresponds to the interval area of ​​the first grooves up and down;

[0012] A first reflector is disposed on a side wall of each of the second grooves.

[0013] Optionally, the first reflector is also arranged on the second surface of the spacing area of ​​a plurality of the second grooves.

[0014] Optionally, the width of the first groove is equal to the width of the corresponding second groove spacing area.

[0015] Optionally, the depth of the second groove is 10 microns to 50 microns.

[0016] Optionally, the light output structure further includes:

[0017] A second reflector is disposed on the sidewall of the first groove and the first surface of the spacing area of ​​each first groove.

[0018] According to a second aspect of the present invention, a light-emitting structure is provided, characterized in that it comprises the light-emitting structure as described in claims 3 to 6, fluorescent glue, a plurality of LED chips and a driver; wherein the driver is connected to the backlight surfaces of the plurality of LED chips to drive the plurality of LED chips to emit light; the fluorescent glue is filled in each of the second grooves; each of the LED chips corresponds to a second groove, and the light-emitting surface of the LED chip fits the corresponding fluorescent glue filled in the second groove.

[0019] Optionally, the width of the LED chip is equal to the width of the corresponding second groove.

[0020] According to a third aspect of the present invention, a light-emitting structure is provided, characterized in that it comprises the light-emitting structure as described in claim 7, fluorescent glue, several LED chips and a driver; wherein the driver is connected to the backlight surface of the several LED chips to drive the several LED chips to emit light; the fluorescent glue is applied to the second surface of the substrate; the light-emitting surface of the LED chip is attached to the fluorescent glue, and each of the LED chips corresponds to one of the first grooves up and down.

[0021] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0022] In a light emitting structure provided by an embodiment of the present invention, a plurality of first grooves distributed at intervals are provided on the light emitting surface of the substrate to isolate the light incident on the substrate, thereby reducing the optical crosstalk phenomenon and improving the contrast of the light emitted from the substrate.

[0023] Furthermore, a plurality of second grooves are arranged at intervals on the second surface of the substrate, and a first reflector is arranged on the side wall of each second groove and the second surface of the interval area of ​​the plurality of second grooves. The second groove can be used to hold fluorescent glue, so that the fluorescent glue can be better sealed, thereby improving the reliability of the light output structure. In addition, the reflector on the side wall of the second groove can reflect the light reaching the reflector back into the fluorescent glue by the reflector, so that the fluorescent glue is fully excited and the light can be more collimated; the reflector on the second surface can ensure that all the light entering the fluorescent glue is reflected downward, thereby improving the brightness of the light output from the first surface of the substrate.

[0024] Furthermore, by enabling the light incident on the substrate to be emitted only from the bottom of the first groove on the side wall of the first groove and the first surface of the spacing area of ​​each first groove, more thorough light isolation is performed, thereby better reducing the optical crosstalk phenomenon and further improving the contrast of the light emitted from the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a cross-sectional schematic diagram of a light output structure provided by an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of a light emitting structure provided by an embodiment of the present invention Figure 1 ;

[0027] Figure 3 is a cross-sectional view of a light emitting structure provided by an embodiment of the present invention Figure 2 ;

[0028] Figure 4 is a cross-sectional schematic diagram of a light output structure provided by another embodiment of the present invention;

[0029] Figure 5 is a cross-sectional schematic diagram of a light-emitting structure provided by an embodiment of the present invention;

[0030] Figure 6 It is a cross-sectional schematic diagram of a light-emitting structure provided by another embodiment of the present invention.

[0031] Reference numerals:

[0032] 1-Substrate;

[0033] 2- first groove;

[0034] 3- second groove;

[0035] 4- first reflector;

[0036] 5- second reflector;

[0037] 6-Fluorescent glue;

[0038] 7-LED chip;

[0039] 8-Drive. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the embodiments in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention. The terms "first", "second", "third", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] As described in the background technology, the prior art usually uses fluorescent glue or fluorescent ceramic substrate to directly adhere to the light-emitting layer of the LED chip, and the light is emitted from the entire surface of the fluorescent layer. However, this method will cause light emitted by adjacent LED chips to produce optical crosstalk, resulting in poor contrast and unclear emitted light.

[0042] In view of this, the present invention creatively proposes a light output structure.

[0043] in, Figure 1 It is a cross-sectional schematic diagram of a light output structure provided by an embodiment of the present invention.

[0044] Please refer to Figure 1 , an embodiment of the present invention provides a light output structure, including:

[0045] A substrate 1, wherein the substrate 1 comprises a first surface and a second surface; wherein the first surface and the second surface are two opposite surfaces;

[0046] A plurality of first grooves 2 are provided on the first surface of the substrate 1 , and the plurality of first grooves 2 are arranged at intervals; wherein the first surface of the first substrate 1 is a light emitting surface.

[0047] Through the above technical means, the embodiments of the present invention can provide a light output structure that reduces optical crosstalk. The specific principles are as follows:

[0048] A light emitting structure provided by an embodiment of the present invention comprises a substrate and a plurality of first grooves 2 arranged on a first surface of the substrate 1, wherein the first grooves 2 are arranged at intervals on the first surface of the substrate 1. The first surface is a light emitting surface. The first grooves 2 can isolate the light incident on the substrate 1 on the light emitting surface, reduce the light crosstalk phenomenon on the light emitting surface, and thus improve the contrast and clarity of the emitted light.

[0049] It should be noted that the present invention does not limit the shape of the first groove 2 , and any structure that can isolate light from the light-emitting surface of the substrate 1 is within the protection scope of the present invention.

[0050] In order to make the above-mentioned objects, features and beneficial effects of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] As a specific implementation, the depth of the first groove 2 is greater than 10 micrometers. The first groove 2 with a depth greater than 10 micrometers can effectively isolate the light incident on the substrate 1, thereby reducing the optical crosstalk phenomenon.

[0052] The light incident on the substrate 1 may be emitted from the plurality of first grooves 2 , or may be emitted from the first surface of the substrate 1 in the interval area between the plurality of first grooves 2 .

[0053] The following describes an embodiment of the light emitted from the first surface of the substrate 1 in the interval area between the plurality of first grooves 2: Figure 2 is a cross-sectional view of a light emitting structure provided by an embodiment of the present invention Figure 1 .

[0054] Please refer to Figure 2 As a specific implementation, the light output structure further includes:

[0055] A plurality of second grooves 3, wherein the second grooves 3 are arranged on the second surface of the substrate 1, and each of the second grooves 3 corresponds to the interval area of ​​the first grooves 2 in the upper and lower directions;

[0056] A first reflector 4 is arranged on a side wall of each of the second grooves 3 .

[0057] The second groove 3 is used to contain the fluorescent glue 6, so that the fluorescent glue 6 is better sealed, thereby improving the reliability of the light output structure.

[0058] The first reflector 4 can make the reflected light more collimated, so that the fluorescent glue 6 can be fully excited. Each of the second grooves 3 corresponds to the spacing area of ​​the first grooves 2, so that the light entering the substrate 1 from the second grooves 3 is better isolated when it is emitted from the first surface, thereby reducing the light crosstalk phenomenon on the light-emitting surface of the substrate 1.

[0059] Specifically, after the light enters the fluorescent glue 6, a part of it is directly emitted into the interior of the substrate 1 from the bottom of the second groove 3, and the other part passes through the fluorescent glue 6 and encounters the first reflector 4, and then is reflected back into the fluorescent glue through the first reflector 4, so that the fluorescent glue is fully excited. Finally, this part of the light will still be emitted into the interior of the substrate 1 from the bottom of the second groove 3.

[0060] As a specific embodiment, the depth of the second groove 3 is 10 microns to 50 microns. The fluorescent glue 6 contained in the second groove 3 of the depth can make the color of the emitted light conform to the preset light color. Among them, in a typical example, the color of the light injected into the fluorescent glue 6 is blue, the fluorescent glue 6 is yellow, and the light emitted through the fluorescent glue 6 is white. It should be noted that the present invention does not limit the color of the fluorescent glue 6. As long as the color of the light emitted after passing through the fluorescent glue 6 can conform to the preset light color, it is within the protection scope of the present invention.

[0061] in, Figure 3 is a cross-sectional view of a light emitting structure provided by an embodiment of the present invention Figure 2 .

[0062] Preferably, please refer to Figure 3 The first reflector 4 is also arranged on the first surface of the interval area of ​​the plurality of first grooves 2. This can ensure that all the light incident into the fluorescent glue 6 is reflected downward, thereby improving the brightness of the light emitting surface of the substrate 1.

[0063] As a specific implementation, the material of the substrate 1 is a material with high light transmittance, such as glass. The specific selection of the material of the substrate 11 can be selected according to the needs and is not limited here.

[0064] As a specific implementation, the material of the substrate 1 is a material with a light transmittance greater than 90%.

[0065] The following describes the emission of light from the plurality of first grooves 2 through an embodiment:

[0066] in, Figure 4 It is a cross-sectional schematic diagram of a light output structure provided by another embodiment of the present invention.

[0067] Please refer to Figure 4As another implementation, the light output structure further includes:

[0068] The second reflector 5 is arranged on the side wall of the first groove 2 and the first surface of the spacing area of ​​each first groove 2 .

[0069] Among them, the second reflector 5 prevents the light incident on the substrate 1 from being emitted from the position covered by the second reflector 5, so that the light incident on the substrate 1 can only be emitted from the bottom of the first groove 2, thereby realizing light isolation of the light-emitting surface of the substrate 1, thereby reducing the light crosstalk phenomenon on the light-emitting surface and making the emitted light clearer.

[0070] In summary, in a light emitting structure provided by an embodiment of the present invention, a plurality of first grooves spaced apart are provided on the light emitting surface of the substrate to isolate the light incident on the substrate, thereby reducing the optical crosstalk phenomenon and improving the contrast of the light emitted from the substrate.

[0071] Furthermore, a plurality of second grooves are arranged at intervals on the second surface of the substrate, and a first reflector is arranged on the side wall of each second groove and the second surface of the interval area of ​​the plurality of second grooves. The second groove can be used to hold fluorescent glue, so that the fluorescent glue can be better sealed, thereby improving the reliability of the light output structure. In addition, the reflector on the side wall of the second groove can reflect the light reaching the reflector back into the fluorescent glue by the reflector, so that the fluorescent glue is fully excited and the light can be more collimated; the reflector on the second surface can ensure that all the light entering the fluorescent glue is reflected downward, thereby improving the brightness of the light output from the first surface of the substrate.

[0072] Furthermore, by enabling the light incident on the substrate to be emitted only from the bottom of the first groove on the side wall of the first groove and the first surface of the spacing area of ​​each first groove, more thorough light isolation is performed, thereby better reducing the optical crosstalk phenomenon and further improving the contrast of the light emitted from the substrate.

[0073] in, Figure 5 It is a cross-sectional schematic diagram of a light-emitting structure provided by an embodiment of the present invention.

[0074] Please refer to Figure 5 , an embodiment of the present invention also provides a light-emitting structure.

[0075] The light-emitting structure includes the light-emitting structure, fluorescent glue 6, several LED chips 7 and a driver 8; wherein the driver 8 is connected to the backlight surface of the several LED chips 7, and is used to drive the several LED chips 7 to emit light; the fluorescent glue 6 is filled in each of the second grooves 3; each of the LED chips 7 corresponds to a second groove 3, and the light-emitting surface of the LED chip 7 is in contact with the corresponding fluorescent glue 6 filled in the second groove 3.

[0076] As a specific implementation, the width of the LED chip 7 is equal to the width of the corresponding second groove 3, so that the light emitting surface of the LED chip fits correspondingly with the second groove, so that all the light emitted by the LED chip 7 enters the fluorescent glue 6 in the second groove 3.

[0077] The following Figure 5 Taking the cross-sectional schematic diagram of a light-emitting structure shown in FIG. 1 as an example, the working process of a light-emitting structure provided by an embodiment of the present invention is described:

[0078] Please refer to Figure 5 , if the LED chip 7 is a blue LED chip 7, and the fluorescent glue 6 is a yellow fluorescent glue 6, the driver 8 drives the blue LED chip 7 to emit light, and the blue light emitted by each LED chip 7 enters the yellow fluorescent glue 6 in the corresponding second groove 3. A part of the blue light entering the fluorescent glue 6 will directly enter the substrate 1 from the bottom of the second groove 3, and the other part will encounter the first reflector 4 set on the side wall and the second surface of the substrate 1, and then be reflected back to the fluorescent glue 6 by the first reflector 4, and finally will still enter the inside of the substrate 1 from the bottom of the second groove 3. The first reflector 4 reflects the blue light back to the fluorescent glue 6, which will make the fluorescent glue 6 fully excited and ensure that all the blue light is reflected downward, so that the brightness of the light output is improved. The light that enters the inside of the substrate 1 through the bottom of the second groove 3 will be emitted from the first surface corresponding to the upper and lower sides of the second groove 3. The first groove 2 is used for optical isolation between the light output surfaces corresponding to each second groove 3, reducing the light crosstalk phenomenon of each LED chip 7, thereby improving the contrast and clarity of the light output.

[0079] Among them, the depth of the second groove 3 is 10 to 50 microns. If the depth of the second groove 3 is greater than 50 microns, the second groove 3 is filled with too much glue, which will cause the blue light to not leak out, and the output light will become yellow; if the depth of the second groove 3 is less than 10 microns, the second groove 3 is filled with too little glue, which will cause more blue light to leak out, resulting in the color of the output light not being white enough.

[0080] in, Figure 6 It is a cross-sectional schematic diagram of a light-emitting structure provided by an embodiment of the present invention.

[0081] Please refer to Figure 6 Another embodiment of the present invention further provides a light-emitting structure.

[0082] The light-emitting structure includes the light-emitting structure, fluorescent glue 6, a plurality of LED chips 7 and a driver 8; wherein the driver 8 is connected to the backlight surface of the plurality of LED chips 7 to drive the plurality of LED chips 7 to emit light; the fluorescent glue 6 is applied to the second surface of the substrate 1; the light-emitting surface of the LED chip 7 is attached to the fluorescent glue 6, and each of the LED chips 7 corresponds to one of the first grooves 2 up and down.

[0083] The following Figure 6 Taking the cross-sectional schematic diagram of a light-emitting structure shown in FIG. 1 as an example, the working process of a light-emitting structure provided by another embodiment of the present invention is described:

[0084] The light is emitted into the interior of the substrate 1 through the fluorescent glue 6 applied to the second surface of the substrate 1. Since the first surface of the substrate 1 is provided with a second reflector 5 except for the bottom of the first groove 2, the light entering the substrate 1 can only be emitted from the bottom of the first groove 2, so that the light is well isolated on the light-emitting surface of the substrate 1, thereby reducing the light crosstalk phenomenon on the light-emitting surface to improve the contrast and clarity of the emitted light.

[0085] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A light emitting structure, characterized in that: include: A substrate, the substrate comprising a first surface and a second surface; wherein the first surface and the second surface are two opposite surfaces; A plurality of first grooves are provided on the first surface of the substrate, and the plurality of first grooves are arranged at intervals; wherein the first surface of the first substrate is a light emitting surface.

2. The light output structure according to claim 1, characterized in that: The depth of the first groove is greater than 10 micrometers.

3. The light output structure according to claim 2, characterized in that: The light output structure further includes: A plurality of second grooves, wherein the second grooves are arranged on the second surface of the substrate, and each of the second grooves corresponds to the interval area of ​​the first grooves up and down; A first reflector is disposed on a side wall of each of the second grooves.

4. The light output structure according to claim 3, characterized in that: The first reflector is further arranged on the second surface of the spaced areas between the plurality of the second grooves.

5. The light output structure according to claim 3, characterized in that: The width of the first groove is equal to the width of the corresponding second groove spacing area.

6. The light output structure according to claim 3, characterized in that: The second groove has a depth of 10 micrometers to 50 micrometers.

7. The light output structure according to claim 2, characterized in that: The light output structure further includes: A second reflector is disposed on the sidewall of the first groove and the first surface of the spacing area of ​​each first groove.

8. A light emitting structure, characterized in that: It comprises the light-emitting structure as described in claims 3 to 6, fluorescent glue, several LED chips and a driver; wherein the driver is connected to the backlight surface of the several LED chips to drive the several LED chips to emit light; the fluorescent glue is filled in each of the second grooves; each of the LED chips corresponds to a second groove, and the light-emitting surface of the LED chip fits with the fluorescent glue filled in the corresponding second groove.

9. The light emitting structure according to claim 8, characterized in that: The width of the LED chip is equal to the width of the second groove corresponding thereto.

10. A light emitting structure, characterized in that: It comprises the light-emitting structure as described in claim 7, fluorescent glue, several LED chips and a driver; wherein the driver is connected to the backlight surface of the several LED chips to drive the several LED chips to emit light; the fluorescent glue is applied to the second surface of the substrate; the light-emitting surface of the LED chip is attached to the fluorescent glue, and each of the LED chips corresponds to one of the first grooves up and down.

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