CN220289999U

CN220289999U - Light source module and display screen

Info

Publication number: CN220289999U
Application number: CN202321965516.0U
Authority: CN
Inventors: 林文斌; 陈佑南
Original assignee: Shenzhen Zhongshen Intelligent Manufacturing Co ltd
Current assignee: Shenzhen Zhongshen Intelligent Manufacturing Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2024-01-02
Anticipated expiration: 2033-07-24

Abstract

The application provides a light source module and a display screen, which comprise a basal layer, an LED chip, a fixed layer and a fluorescent layer; the fixing layer is fixedly connected with the basal layer, the fixing layer is provided with a cavity, and the fluorescent layer is arranged in the cavity; the fluorescent layer is fixedly arranged on one surface of the basal layer, the LED chip is fixedly connected with the basal layer, and the fluorescent layer wraps the LED chip; the surface of the fixing layer far away from the basal layer is consistent with the height of the fluorescent layer far away from the surface of the basal layer. In the light source module, the base layer sets up the fixed layer, forms the cavity in the fixed layer, forms the fluorescent layer in the cavity, sets up the LED chip in the fluorescent layer, and fluorescent layer and LED chip cooperation send white light, and the fixed layer is kept away from the surface of stratum basale and the fluorescent layer is kept away from the surface parallel of stratum basale, and fixed layer and fluorescent layer are single layer, can weaken the thickness of light source module, and the whole thickness of display screen product that follow-up equipment was accomplished is thinned, the volume is diminish.

Description

Light source module and display screen

Technical Field

The application relates to the technical field of LED display, in particular to a light source module and a display screen.

Background

LED liquid crystal displays are a type of passive light emitting display that requires a backlight (backlight) to provide light, and LED liquid crystal display technology has reached a higher level in the end of the 20 th century due to the advantages of wide viewing angle, high resolution, etc.

The key device light guide plate in the backlight converts the point light source of the LED into a surface light source to provide a white light source for the TFT liquid crystal display device, but the backlight source is always in a normally-on state, so that a certain brightness is provided in the process of displaying a black picture in the liquid crystal display process, the contrast ratio of the conventional liquid crystal display module is lower, and the contrast ratio cannot be comparable with that of an OLED. In order to solve the contrast problem, an LED mini lamp panel is used as a light source, a blue light chip is used as the light source in the lamp panel, a quantum film or a fluorescent film is used for being matched with the blue light chip to convert into white light, and then a multi-layer diffusion plate or a diffusion film is used for softening the LED light source to form a surface light source, meanwhile, each LED can be independently controlled, the brightness of each LED can be adjusted according to a display picture, and the contrast of a liquid crystal display module is increased.

In order to achieve better contrast, the number of the film materials needs to be increased, the thickness of the whole product is easily increased due to the superposition of the film materials, and the size is large.

Disclosure of Invention

The technical problem that this application will solve is in order to reach better contrast, needs to increase membrane material quantity, and the stack of membrane material leads to the holistic thickness increase of product easily, and the volume limit is big.

In order to solve the above problems, or at least partially solve the above technical problems, the present application provides a light source module and a display screen.

In a first aspect, the utility model discloses a light source module, which comprises a basal layer, an LED chip, a fixed layer and a fluorescent layer;

the fixing layer is fixedly connected with the basal layer, the fixing layer is provided with a cavity, and the fluorescent layer is arranged in the cavity;

the fluorescent layer is fixedly arranged on one surface of the basal layer, the LED chip is fixedly connected with the basal layer, and the fluorescent layer wraps the LED chip;

the surface of the fixing layer far away from the basal layer is consistent with the height of the fluorescent layer far away from the surface of the basal layer.

Preferably, the LED chip is a blue light chip.

Preferably, the cavity is square, circular, oval or irregularly shaped.

Preferably, a diffusion layer is included, which covers the surface of the fluorescent layer remote from the base layer.

Preferably, the surface of the fluorescent layer remote from the base layer is provided with a light diffusing microstructure.

Preferably, the surface of the substrate layer close to the LED chip is covered with white ink.

Preferably, an interface between the fluorescent layer and the fixing layer is provided as a plane or a curved surface.

Preferably, the phosphor layer comprises diffusing particles therein.

Preferably, at least one LED chip may be disposed in any one of the cavities.

In a second aspect, the utility model discloses a display screen, which comprises the light source module set described in any one of the above.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the application provides a light source module and display screen, in the light source module, the base layer sets up the fixed layer, forms the cavity in the fixed layer, forms the fluorescent layer in the cavity, sets up the LED chip in the fluorescent layer, and the fluorescent layer sends white light with the cooperation of LED chip, and the fixed layer is kept away from the surface of stratum basale and the fluorescent layer is kept away from the surface parallel of stratum basale, and fixed layer and fluorescent layer are the single layer, can weaken the thickness of light source module, and the whole thickness attenuation, the volume diminish of display screen product that follow-up equipment was accomplished.

In the display screen, the inside light source module of display screen, and set up the fixed layer on the stratum basale in the light source module, set up the fluorescent layer in the fixed layer, the whole thickness of light source module is thinner, even use the membranous material less, can reduce the holistic thickness of display screen, and fluorescent layer and LED chip cooperation make the light source module can send the light source, and directly over the LED chip, be provided with light diffusion structure and diffusion layer above the fluorescent layer, increase light diffusion's optical effect, guarantee good optical effect.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a light source module provided in the present application;

fig. 2 is a schematic cross-sectional structure of a light source module provided in the present application;

FIG. 3 is a schematic diagram of a fluorescent layer of a light source module according to the present disclosure;

fig. 4 is a schematic diagram of a second structure of a fluorescent layer of a light source module provided in the present application.

Reference numerals illustrate:

1. a light source module; 11. a base layer; 12. an LED chip; 13. a fixed layer; 131. a cavity; 132. an interface; 14. a fluorescent layer; 141. a light diffusing microstructure; 15. and a diffusion layer.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

In a first aspect, referring to fig. 1-3, the utility model discloses a light source module 1, which comprises a substrate layer 11, an LED chip 12, a fixing layer 13, and a fluorescent layer 14, wherein the fixing layer 13, the fluorescent layer 14, and the LED chip 12 are fixedly arranged on the substrate layer 11.

Specifically, the fixing layer 13 is provided with a cavity 131, the fluorescent layer 14 is disposed in the cavity 131, the fluorescent layer 14 is fixedly disposed on a surface of the base layer 11, the fluorescent layer 14 wraps the LED chip 12, the fluorescent layer 14 is used for diffusing a light source of the LED chip 12, the fluorescent layer 14 and the LED chip 12 cooperate to emit white light, and the base layer 11 plays a role of a circuit board for supporting chip elements.

When the fixing layer 13 is manufactured on the substrate layer 11, the position of the cavity 131 is reserved in advance, then the LED chip 12 is placed in the cavity 131, the fluorescent layer 14 can be mixed by fluorescent materials and glue, the fluorescent layer is injected into the cavity 131, the LED chip 12 is surrounded by the fluorescent layer 14, the fluorescent layer 14 is in contact with the fixing layer 13, the surface of the fixing layer 13 away from the substrate layer 11 is consistent with the height of the fluorescent layer 14 away from the surface of the substrate layer 11, the thicknesses of the fixing layer 13 and the fluorescent layer 14 are consistent, the fixing layer 13 and the fluorescent layer 14 are single layers, namely, the light source module 1 is provided with fewer film layers, the thickness of the light source module 1 is greatly reduced, and the whole thickness of a display screen product which is assembled later is thinned and the volume of the display screen product is reduced.

In particular, the fixing layer 13 is made of a resin material, a glass material, or a ceramic material; among the resin materials, the fixing layer 13 is integrally formed directly on the base layer 11 using a mold as a thermosetting material; when the fixing layer 13 is coated on the base layer 11 with a UV-type material, the UV light source is used for curing.

The cavity 131 may be square, round, oval, etc., and may be irregular, so as to ensure the optical uniformity of the whole surface of the light source module 1.

At least one of the LED chips 12 may be disposed in any one of the cavities 131. On the base layer 11, the LED chips 12 may be arranged in an array, and the cavities 131 are arranged according to the LED chips 12. The cavity 131 may be disposed around a plurality of LED chips 12 to meet corresponding lighting requirements.

The surface of the base layer 11 near the LED chip 12 is white, specifically, the surface of the base layer 11 is coated with white ink or the base layer 11 is a white substrate, and by setting the base layer 11 to be white, the light utilization rate can be increased and color shift can be avoided.

The LED chip 12 is a blue light chip. Specifically, the peak wavelength of the chip is 440nm to 470nm, the fluorescent layer 14 can be made of fluorescent powder material or quantum dot material, and the light source module 1 can generate white light by matching the fluorescent layer 14 with the LED chip 12; in addition, the fluorescent material can adopt yellow light material with the peak wavelength of 540-580 nm, or can be a mixture of green light material and red light material, the peak wavelength of the green light material is 500-540 nm, and the peak wavelength of the red light material is 590-700 nm, so that a user can have more combinations of the LED chip 12 and the fluorescent layer 14, and the number of producible products is increased.

The interface 132 between the fluorescent layer 14 and the fixing layer 13 is a plane or a curved surface, and the interface 132 may be a combination of multiple planes or a combination of multiple curved surfaces, so as to improve the illumination effect, optimize the optics and avoid chromatic aberration.

The light source module 1 comprises a diffusion layer 15, wherein the diffusion layer 15 covers the surface of the fluorescent layer 14 away from the substrate layer 11, and in addition, the surface of the fluorescent layer 14 away from the substrate layer 11 is provided with a light diffusion microstructure 141.

Specifically, the diffusion layer 15 is disposed above the fluorescent layer 14, and meanwhile, a light diffusion microstructure 141 may be disposed on the upper surface of the fluorescent layer 14, so that an optical effect of light diffusion may be increased directly above the LED chip 12, and a surface structure or particles change a light emitting path, so that light having a larger brightness directly above the LED chip 12 is avoided by refraction or reflection, halos are generated, and meanwhile, obvious chromatic aberration in different areas is avoided, and a good light diffusion effect is ensured.

The phosphor layer 14 includes diffusion particles therein, which are white or transparent. Specifically, in the mixing process of the fluorescent material and the glue, diffusion particles can be added, so that the light diffusion capability can be improved, the diffusion particles are white or transparent, other colors can be configured according to different color temperature requirements, after the light is refracted and reflected by the diffusion particles, the white light emission angle is increased, halos generated right above the LED chip 12 are avoided, and meanwhile, obvious color differences in different areas are avoided.

In a second aspect, the present utility model discloses a display screen, which includes the light source module 1 described above. Specifically, the light source module 1 inside the display screen, and set up fixed layer 13 on the stratum basale 11 in the light source module 1, set up fluorescent layer 14 in the fixed layer 13, the whole thickness of light source module 1 is thinner, even use the membrane material less, can reduce the holistic thickness of display screen, and fluorescent layer 14 cooperates with LED chip 12, make light source module 1 can send the light source, and just above the LED chip 12, be provided with light diffusion structure and diffusion layer 15 above fluorescent layer 14, increase the optical effect of light diffusion, guarantee good optical effect, in addition, add the diffusion particle in the fluorescent layer 14, can increase the diffusivity of light, and the diffusion particle sets up white and transparent, after the refraction and the reflection of light through diffusion particle, increase white light emission's angle, avoid LED chip 12 to produce the halation directly over, avoid there is obvious colour difference in different regions simultaneously.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be attached, detached, or integrated, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The light source module is characterized by comprising a basal layer, an LED chip, a fixed layer and a fluorescent layer;

2. The light source module of claim 1, wherein the LED chip is a blue light chip.

3. The light source module of claim 1, wherein the cavity is square, circular, oval, or irregularly shaped.

4. The light source module of claim 1, comprising a diffusion layer covering a surface of the phosphor layer remote from the base layer.

5. The light source module of claim 1, wherein the fluorescent layer has a light diffusing microstructure disposed away from a surface of the base layer.

6. The light source module of claim 1, wherein a surface of the base layer adjacent to the LED chip is covered with white ink.

7. The light source module of claim 1, wherein an interface between the fluorescent layer and the fixed layer is configured as a plane or a curved surface.

8. The light source module of claim 1, wherein the phosphor layer comprises diffusing particles therein.

9. A light source module as recited in claim 1, wherein at least one of the LED chips is disposed within any one of the cavities.

10. A display screen comprising a light source module according to any one of the preceding claims 1-9.