CN211478814U

CN211478814U - Backlight module and display device

Info

Publication number: CN211478814U
Application number: CN201921662761.8U
Authority: CN
Inventors: 刘国旭; 申崇渝
Original assignee: Beijing Yimei New Technology Co ltd
Current assignee: Beijing Yimei New Technology Co ltd
Priority date: 2019-10-02
Filing date: 2019-10-02
Publication date: 2020-09-11
Anticipated expiration: 2029-10-02

Abstract

The utility model relates to a LED technical field that is shaded provides a backlight unit, display device and adjustment display device luminous method, wherein, backlight unit includes: the light emitting device includes a substrate, a chip unit provided on the substrate and having a plurality of chips emitting light of at least two wavelengths. The utility model discloses a backlight unit has solved the yellow problem of eyeshield mode in addition, can also adjust eyeshield mode and color mode in a flexible way.

Description

Backlight module and display device

Technical Field

The utility model relates to a LED technical field that is shaded, more specifically say, relate to a backlight unit, display device and adjustment display device luminous method.

Background

At present, eye diseases such as myopia are caused by long-term watching of television. The existing LED chips are all second chips, short waves are wave bands harmful to eyes, but the short waves are wave bands needed by the existing common television, and the color performance of the wave bands is good. Long waves are not harmful to humans, but the color appearance is relatively distorted. The prior art eye protection modes are all artificially filtering blue light. But filtering blue light sacrifices display quality. The principle of artificially filtering blue light is to artificially and forcibly filter the displayed blue light, so that color imbalance is caused, yellow light becomes strong, and a screen is yellow.

In order to overcome the above-mentioned drawbacks of the prior art, it is necessary to provide a new backlight module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a backlight unit, it can overcome prior art's above-mentioned defect and can realize when protecting eyes, accomplishes better with the color performance.

In order to achieve the above object, a first aspect of the present invention provides a backlight module, wherein the backlight module includes:

a substrate, a first electrode and a second electrode,

a chip unit provided on the substrate and having a plurality of chips emitting light of at least two wavelengths.

The backlight module as described above, wherein the chip unit includes: the chip comprises a plurality of first chips emitting long waves and a plurality of second chips emitting short waves, wherein the second chips are arranged between two adjacent first chips.

The backlight module as described above, wherein the first chips and the second chips are alternately disposed on the substrate.

The backlight module is characterized in that the short wave has a wavelength of 442.5-452.5nm, and the long wave has a wavelength of 460-475 nm.

The backlight module as described above, wherein the substrate is a PCB substrate.

The backlight module as described above, further comprising:

and the control unit is electrically connected with the chip unit to control the chip unit so that the light emitted by the chip unit has the color and the eye protection mode required by a user.

A second aspect of the present invention provides a display device, wherein the display device has the backlight module as described above.

The display device as described above, further comprising a film material and a diffusion plate, wherein the chip unit is disposed between the substrate and the diffusion plate, and the film material is disposed on a side of the diffusion plate away from the chip unit.

The utility model discloses a backlight unit, display device and the luminous method of adjustment display device relate to the technique in a poor light of variable colour temperature, can accomplish shortwave and long wave coexistence, perhaps mix and give out light, when protecting eyes, accomplish better with the color performance to solved the yellow problem of eyeshield mode, can also adjust eyeshield mode and color mode in a flexible way.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention; and

fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-chip;

2-a chip unit;

21-a first chip;

22-a second chip;

3-a control unit;

4-film material;

5-diffusion plate.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1, the present invention provides a backlight module, wherein the backlight module includes: a substrate 1 and a chip unit 2, wherein the chip unit 2 is disposed on the substrate 1 and has a plurality of chips emitting light of at least two wavelengths.

Specifically, the chip unit 2 at least includes a plurality of first chips 21 (which may also be referred to simply as long-wave chips according to their functions) emitting long waves and a plurality of second chips 22 (which may also be referred to simply as short-wave chips according to their functions) emitting short waves, and a second chip 22 is disposed between two adjacent first chips 21, that is, the first chips 21 can emit long waves and the second chips 22 can emit short waves. In the scheme of the same backlight module, two groups of chips with different wavelengths are placed on a substrate, one group is a short-wave chip which has influence on human eyes but has better color performance, and the other group is a long-wave chip which has no influence on human eyes but has poor color performance. In a scene with vivid color, a short wave chip and a long wave chip are poor. When the eye protection mode is needed, the long-wave chip is used, and the short-wave chip is not bright, so that the color mode and the eye protection mode can be adjusted.

In a specific embodiment, as shown in fig. 1, the second chips 22 and the second chips 21 are alternately disposed on the substrate 1, and then the first chip 21 is disposed on the second chip 22, so that the user can view a desired color by controlling the second chip 22 on the substrate 1 to emit a short wave to realize a more realistic scene, and also can view the user in an eye protection mode by controlling the first chip 21 on the substrate 1 to emit a long wave.

In one embodiment, the short wavelength is between 442.5-452.5nm and the long wavelength is between 460-475 nm. The wavelength of the short wave chip (also called Mini chip) is 442.5-452.5 nm; the wavelength of the long-wave Mini chip is between 460 and 475 nm.

In one embodiment, the substrate 1 is a PCB substrate. The control chip unit 2 is fixed on the PCB substrate. Placing an LED short wave chip and an LED long wave chip on each pixel point of a PCB substrate

Further, as shown in fig. 2, the backlight module of the present invention may further include: and a control unit 3 electrically connected to the chip unit 2 to control the chip unit 2 such that the chip unit 2 emits light having a color and eye-protecting mode desired by a user. Specifically, the control unit 3 is connected to each of the first chips 21 and each of the second chips 22, and can display a local area with a short wave, display other areas with a long wave, and flexibly adjust the wavelength of each pixel point through the control unit 3 (such as software). Or mixed according to a certain proportion, and the required color expression is achieved. The harm to human eyes is reduced to the minimum. The wavelength here refers to the wavelength at which the chip emits light.

In the backlight unit of this application promptly, there are two sets of chips on every pixel, be shortwave chip and long wave chip respectively, and the eyeshield mode can be shown with the shortwave, and the color mode can be shown with the long wave, can adjust the chip that every pixel will show in a flexible way through the control unit 3 (like software). Can be mixed according to a certain proportion for use, and achieves the effect of eye protection and color.

The utility model also provides a display device, wherein, this display device has the backlight unit in above-mentioned embodiment, no longer gives unnecessary details again to backlight unit here.

Further, the display device further comprises a film material 4 and a diffusion plate 5, wherein the chip unit 2 is arranged between the substrate 1 and the diffusion plate 5, and the film material 4 is arranged on one side of the diffusion plate 5 far away from the chip unit 2.

The utility model also provides a method of adjusting above-mentioned display device's light emitting mode, wherein, this method includes: a chip unit 2 having a plurality of chips emitting light of at least two wavelengths is provided on a substrate 1; connecting the chip unit 2 with the control unit 3; and adjusting the chip unit 2 through the control unit 3 to make the light emitted by the plurality of chips have the color and eye protection mode required by the user.

In a specific embodiment, the plurality of chips includes at least a first chip 21 emitting a long wave having a wavelength of 442.5-452.5nm and a second chip 22 emitting a short wave having a wavelength of 460-475 nm. The local area is displayed by short waves through control, other areas are displayed by long waves, and the wavelength of each pixel point can be flexibly adjusted through software. Or mixed according to a certain proportion (such as the proportion of the short wave emitted by the first chip and the long wave emitted by the second chip on the whole substrate), and the required color expression is achieved. The harm to human eyes is reduced to the minimum. The wavelength here refers to the wavelength at which the chip emits light.

The method can solve the problem that the eye protection mode is yellow, and can flexibly adjust the eye protection mode and the color mode.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A backlight module is characterized in that the backlight module comprises:

a substrate, a first electrode and a second electrode,

2. The backlight module as claimed in claim 1, wherein the chip unit comprises: the chip comprises a plurality of first chips emitting long waves and a plurality of second chips emitting short waves, wherein the second chips are arranged between two adjacent first chips.

3. The backlight module as claimed in claim 2, wherein the first chips and the second chips are alternately disposed on the substrate.

4. A backlight module according to claim 2 or 3, wherein the short wavelength is between 442.5-452.5nm and the long wavelength is between 460-475 nm.

5. The backlight module according to any one of claims 1 to 3, wherein the substrate is a PCB substrate.

6. The backlight module according to any one of claims 1 to 3, further comprising:

7. A display device, characterized in that the display device has a backlight module as claimed in any one of claims 1 to 6.

8. The display device according to claim 7, further comprising a film and a diffusion plate, wherein the chip unit is provided between the substrate and the diffusion plate, and the film is provided on a side of the diffusion plate away from the chip unit.