CN215181320U - Backlight module and electronic equipment - Google Patents
Backlight module and electronic equipment Download PDFInfo
- Publication number
- CN215181320U CN215181320U CN202121742270.1U CN202121742270U CN215181320U CN 215181320 U CN215181320 U CN 215181320U CN 202121742270 U CN202121742270 U CN 202121742270U CN 215181320 U CN215181320 U CN 215181320U
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- Prior art keywords
- light
- guide plate
- backlight module
- light guide
- light source
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- 239000000463 material Substances 0.000 claims abstract description 39
- 230000005284 excitation Effects 0.000 claims abstract description 27
- 230000000295 complement effect Effects 0.000 claims abstract description 21
- 239000012788 optical film Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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Abstract
The utility model discloses a backlight module, electronic equipment, wherein backlight unit includes: the light guide plate is provided with an incident light side and an emergent light side; the light source is arranged on the light incidence side of the light guide plate; the optical film is arranged on the light emitting side of the light guide plate; the light guide plate is equipped with at least one and holds the chamber, it has: and the light excitation material is used for generating complementary light under the excitation of the light emitted by the light source, and the complementary light and the light emitted by the light source are mixed into white light. Through setting up the light source in one side of light guide plate and the optics diaphragm sets up the opposite side at the light guide plate, the light arouses the material to be convenient for set up to be closer with the light source distance, and the efficiency that makes the light arouse that the mutual filling light that the material was aroused and produced and the light that the light source sent mix into white light is higher, and the luminous flux that is shaded under the equal luminous power state is higher, has improved the colour gamut lifting efficiency that is shaded.
Description
Technical Field
The utility model relates to a lighting device technical field, in particular to backlight module, electronic equipment.
Background
The backlight display field is always dedicated to displaying the image content more gorgeously and vividly, the overall image quality of the module is generally improved by improving the brightness, color gamut and contrast of the backlight, and the true restoration of the color is mainly embodied by improving the color gamut of the module.
In the prior art, the color gamut of the backlight is mainly improved through the following ways: 1. a side-in high color gamut lamp bead (white light packaged and synthesized by a blue light chip and high color gamut fluorescent powder), a light guide plate and an optical diaphragm are adopted; 2. the LED lamp comprises a blue light lamp bead, a light guide plate, a quantum film material and an optical film; 3. the white light, the light guide plate and the optical diaphragm are synthesized by the blue light chip, the green light chip and the red fluorescent powder packaging lamp bead; 4. the white light, the light guide plate and the optical membrane are synthesized by the blue light chip, the green light chip and the red light chip packaging lamp beads.
The above four ways have their respective advantages and disadvantages: scheme 1 can realize the improvement of the backlight color gamut in the most economical mode, but is limited by the characteristics of the fluorescent powder, and the color gamut improvement is limited; the scheme 2 can well realize the module color gamut value, but the quantum film material on the market is expensive at present; the scheme 3 can well improve the color gamut, but the scheme has the problem of reliability due to large heat productivity, and the problem of backlight color cast can be caused due to inconsistent light attenuation of the blue-green light chip after long-time use; scheme 4 three red green blue chips produce three chromatic aberration phenomenon in getting into the light guide plate, and the light decay of three red green blue chips is inconsistent, can lead to the color cast problem of module, and three chips need control respectively simultaneously, and the circuit design is whole more complicated, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a backlight module aims at improving the color gamut lifting efficiency of being shaded.
In order to achieve the above object, the present invention provides a backlight module, including: the light guide plate is provided with an incident light side and an emergent light side; the light source is arranged on the light incidence side of the light guide plate; the optical film is arranged on the light emitting side of the light guide plate; the light guide plate is equipped with at least one and holds the chamber, it has: and the light excitation material is used for generating complementary light under the excitation of the light emitted by the light source, and the complementary light and the light emitted by the light source are mixed into white light.
Optionally, the backlight module comprises at least two light sources, the light guide plate is provided with at least two accommodating cavities arranged at intervals, and the light sources correspond to the accommodating cavities one to one, so that the parallel processing efficiency of the backlight module is improved, and the backlight color gamut improving efficiency is further improved.
Optionally, the width of the light-emitting side of the accommodating cavity is greater than the width of the light-entering side of the accommodating cavity, so that light rays on the light-emitting side are gathered together.
Optionally, the width of the accommodating cavity is gradually increased along the direction from the light incident side to the light emergent side, so that the gathering degree of light rays on the light emergent side is further improved.
Optionally, a reflective layer is disposed on a periphery of the light guide plate, and the periphery of the light guide plate is disposed around a direction from the light incident side to the light exiting side. The reflecting layer can reflect light emitted by the light source back to the light guide plate, so that light loss is avoided, and the backlight color gamut improving efficiency is further improved.
Optionally, the light guide plate is provided as a cuboid and/or the receiving cavity is provided as a wedge-shaped cavity.
Optionally, a sealing structure for sealing the accommodating cavity is arranged on the light guide plate. The closed structure can isolate the light excitation material from external water vapor and air, and prolong the service life of the light excitation material.
Optionally, the light source is configured to emit blue light, and the light-excited material includes red and green quantum materials; or the light source is used for emitting ultraviolet light, and the light excitation material comprises red, green and blue quantum materials.
Optionally, the light-excited material includes at least one of YAG powder, KSF powder, and nitride powder.
The utility model also provides an electronic equipment, including above-mentioned backlight unit.
The technical scheme of the utility model through with the light source setting in one side of light guide plate and the optics diaphragm setting is at the opposite side of light guide plate, the light arouses the material to be convenient for set up to be closer with the light source distance, and the efficiency that makes the light arouse that the mutual filling light that the material arouses produced and the light that the light source sent mixes into white light is higher, and the luminous flux that is shaded under the equal luminous power state is higher, has improved the colour gamut lifting efficiency that is shaded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a front view of an embodiment of the backlight module of the present invention.
Fig. 2 is a top view of an embodiment of the backlight module of the present invention.
Fig. 3 is a top view of another embodiment of the backlight module of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
11 | Containing |
| 121 | |
122 | |
| 2 | |
3 | |
| 4 | Optically |
5 | Reflective layer |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a backlight module.
Referring to fig. 1 to 3, in an embodiment of the present invention, the backlight module includes a light guide plate 1, the light guide plate 1 has an incident light side 121 and a light emitting side 122, the incident light side 121 is located on the left side of the light guide plate 1 in the drawing, and the light emitting side is located on the right side of the light guide plate 1 in the drawing; the backlight module further comprises a light source 2, and the light source 2 is arranged on the light incident side 121 of the light guide plate 1; the backlight module further comprises an optical film 3, and the optical film 3 is arranged on the light-emitting side 122 of the light guide plate 1; the light guide plate 1 is provided with at least one accommodating cavity 11, the accommodating cavity 11 is filled with a light excitation material 4, the light excitation material 4 is used for generating complementary light under the excitation of light emitted by the light source 2, and the complementary light and the light emitted by the light source 2 are mixed into white light. Practical examples of complementary light include, but are not limited to, red light, blue light, and green light capable of mixing into white light, and the mixing of one of the red light, the blue light, and the green light with the other two is called complementary light. It is understood that the complementary light may be mixed with other light, or other light may not be eliminated, in addition to the light required for complementation.
In an alternative embodiment, referring to fig. 1 and fig. 2, the backlight module includes a light guide plate 1, the light guide plate 1 has a light incident side 121 and a light exiting side 122, the light incident side 121 is located on the left side of the light guide plate 1 in the drawings, and the light exiting side is located on the right side of the light guide plate 1 in the drawings; the backlight module further comprises a light source 2, and the light source 2 is arranged on the light incident side 121 of the light guide plate 1; the backlight module further comprises an optical film 3, and the optical film 3 is arranged on the light-emitting side 122 of the light guide plate 1; the light guide plate 1 is provided with at least one accommodating cavity 11, the accommodating cavity 11 is filled with a light excitation material 4, the light excitation material 4 is used for generating complementary light under the excitation of light emitted by the light source 2, and the complementary light and the light emitted by the light source 2 are mixed into white light. Practical examples of complementary light include, but are not limited to, red light, blue light, and green light capable of mixing into white light, and the mixing of one of the red light, the blue light, and the green light with the other two is called complementary light. It is understood that the complementary light may be mixed with other light, or other light may not be eliminated, in addition to the light required for complementation. The width of the light-emitting side 122 of the accommodating cavity 11 is greater than the width of the light-entering side 121 of the accommodating cavity 11, so that the light rays of the light-emitting side 122 are gathered. Specifically, the width of the accommodating cavity 11 gradually increases in the direction from the light incident side 121 to the light exit side 122, and the convergence degree of the light on the light exit side is further improved. More specifically, the light guide plate 1 is configured as a rectangular parallelepiped, the accommodating cavity 11 is configured as a wedge-shaped cavity to realize that the width of the light exit side 122 of the accommodating cavity 11 is greater than the width of the light entrance side 121 of the accommodating cavity 11, and the width of the accommodating cavity 11 gradually increases along the direction from the light entrance side 121 to the light exit side 122.
The ratio of the volume of the accommodating cavity 11 to the volume of the light guide plate 1 is greater than a preset value, and specifically, the preset value may be set to 50%, 60%, 70%, 80%, 90%, so that it can be used to increase the volume ratio of the light excitation material 4. When a plurality of accommodating cavities 11 are provided, it means that the total volume of the plurality of accommodating cavities 11 is compared with the volume of the light guide plate 1 to obtain a ratio.
The light guide plate 1 is provided with a reflective layer 5 on its periphery, the reflective layer 5 may be a silver reflective layer, and the periphery of the light guide plate 1 is disposed around the light incident side 121 to the light emergent side 122. The reflective layer 5 may be disposed at upper, lower, left, and right sides that do not affect the propagation of light. The reflecting layer 5 can reflect the light emitted by the light source 2 back to the light guide plate 1, so that light loss is avoided, and the backlight color gamut improvement efficiency is further improved. Further, the reflecting layer 5 can be arranged on the inclined plane of the accommodating cavity 111, and can act together with the appearance of the accommodating cavity 111, so that the reflecting layer 5 can reflect light emitted by the light source 2 back to the light guide plate 1, further light loss is avoided, and the backlight color gamut improving efficiency is further improved.
Further as a preferred embodiment, the Light source 2 is configured to emit blue Light, in particular, the Light source 2 may be configured as a blue-Emitting LED (Light-Emitting Diode), and the Light-activated material 4 includes a red-green quantum material or a quantum rod; or the light source 2 is used for emitting ultraviolet light, and can be specifically set as an ultraviolet light generator, and the light excitation material 4 comprises red, green and blue quantum materials or quantum rods; or the light excitation material 4 includes one or at least one of YAG powder, KSF powder, and nitride powder, and the type of the light source 2 is set correspondingly.
The light guide plate 1 is provided with a sealing structure for sealing the accommodating cavity 11, and the light excitation material 4 is sealed and isolated from outside water vapor and air. The enclosing structure can be formed by integrally injection molding the light guide plate 1, and a cover plate can also be arranged. The closed structure can isolate the light excitation material 4 from external water vapor and air, and prolong the service life of the light excitation material 4.
In yet another alternative embodiment, as shown in fig. 3, the backlight module includes a light guide plate 1, the light guide plate 1 has a light incident side 121 and a light exiting side 122, the light incident side 121 is located at the left side of the light guide plate 1 in the drawing, and the light exiting side is located at the right side of the light guide plate 1 in the drawing; the backlight module further comprises a light source 2, and the light source 2 is arranged on the light incident side 121 of the light guide plate 1; the backlight module further comprises an optical film 3, and the optical film 3 is arranged on the light-emitting side 122 of the light guide plate 1; the light guide plate 1 is provided with at least one accommodating cavity 11, the accommodating cavity 11 is filled with a light excitation material 4, the light excitation material 4 is used for generating complementary light under the excitation of light emitted by the light source 2, and the complementary light and the light emitted by the light source 2 are mixed into white light. Practical examples of complementary light include, but are not limited to, red light, blue light, and green light capable of mixing into white light, and the mixing of one of the red light, the blue light, and the green light with the other two is called complementary light. It is understood that the complementary light may be mixed with other light, or other light may not be eliminated, in addition to the light required for complementation. Backlight unit includes two at least light sources 2, and light guide plate 1 is equipped with the chamber 11 that holds that two at least intervals set up, and light source 2 with hold 11 one-to-one in the chamber, a light source 2 corresponds a set of chamber 11, the light excitation material 4 that holds promptly, or a set of chamber 11 that holds, the light excitation material 4 that holds covers a light source 2, make backlight unit have improved parallel processing efficiency, have further improved the color gamut lifting efficiency of being shaded.
The utility model also provides an electronic equipment, like liquid crystal display shows etc, this electronic equipment includes above-mentioned backlight unit. The specific structure of the backlight module refers to the above embodiments, and since the electronic device adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A backlight module, comprising:
the light guide plate is provided with an incident light side and an emergent light side;
the light source is arranged on the light incidence side of the light guide plate;
the optical film is arranged on the light emitting side of the light guide plate;
the light guide plate is equipped with at least one and holds the chamber, it has:
and the light excitation material is used for generating complementary light under the excitation of the light emitted by the light source, and the complementary light and the light emitted by the light source are mixed into white light.
2. The backlight module according to claim 1, comprising at least two light sources, wherein the light guide plate is provided with at least two accommodating cavities arranged at intervals, and the light sources are in one-to-one correspondence with the accommodating cavities.
3. The backlight module as claimed in claim 1, wherein the width of the light exit side of the accommodating cavity is greater than the width of the light entrance side of the accommodating cavity.
4. The backlight module according to claim 3, wherein the width of the accommodating cavity gradually increases along a direction from the light incident side to the light exit side.
5. The backlight module as claimed in claim 1, wherein a reflective layer is disposed on a periphery of the light guide plate, the periphery of the light guide plate being disposed around a direction from the light incident side to the light exit side.
6. The backlight module according to claim 1, wherein the light guide plate is configured as a rectangular parallelepiped and/or the receiving cavity is configured as a wedge-shaped cavity.
7. The backlight module as claimed in claim 1, wherein the light guide plate is provided with a sealing structure for sealing the receiving cavity.
8. The backlight module of claim 1, wherein the light source is configured to emit blue light, and the light-activated material comprises red-green quantum material; or the light source is used for emitting ultraviolet light, and the light excitation material comprises red, green and blue quantum materials.
9. The backlight module as claimed in claim 1, wherein the light-activated material comprises at least one of YAG powder, KSF powder, and nitride powder.
10. An electronic device comprising the backlight module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121742270.1U CN215181320U (en) | 2021-07-28 | 2021-07-28 | Backlight module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121742270.1U CN215181320U (en) | 2021-07-28 | 2021-07-28 | Backlight module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215181320U true CN215181320U (en) | 2021-12-14 |
Family
ID=79405460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121742270.1U Expired - Fee Related CN215181320U (en) | 2021-07-28 | 2021-07-28 | Backlight module and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215181320U (en) |
-
2021
- 2021-07-28 CN CN202121742270.1U patent/CN215181320U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |