CN209446925U - Backlight module and the display device for using the backlight module - Google Patents

Abstract

The utility model provides a kind of backlight module and the display device using the backlight module.The utility model has the advantage of can effectively optimize LED light shadow, promote Mini-LED entirety display effect；Do not increase mould group thickness as far as possible, under the premise of reducing mould group power consumption penalty, optimizes Mini-LED lamp shadow problem；, it can be achieved that LED subtracts lamp design under same thickness, in reduction, large scale Mini-LED mould group cost.

Description

Backlight module and the display device for using the backlight module

Technical field

The utility model relates to field of display devices more particularly to a kind of backlight module and using the display of the backlight module Device.

Background technique

HDR (High Dynamic Range) has become the standard configuration that high-order is shown, TFT-LCD display technology is in colour gamut, right It is constantly promoted than indexs such as degree, brightness, with this come OLED display technology of contending with.But high colour gamut generally can be sacrificial in TFT-LCD technology Domestic animal brightness, and static contrast also falls into bottleneck.Therefore side entrance back collocation TFT-LCD performance has been difficult to be promoted.

In order to meet high colour gamut, each manufacturer is in technologies such as exploitation QD-BL, QD-CF.In order to promote contrast, use Straight-down negative area source partitioning technique, is divided into multizone independent control unit for backlight, i.e., is divided into backlight multiple Mini-LED improves dynamic contrast according to the accurate brightness for adjusting corresponding backlight area of bright, the dark distribution of each frame image Degree, is obviously improved image display quality.

But the shortcomings that structure, is, it is bad that Mini-LED has that LED light shadow covers.LED light shadow is solved at present Usually there are three types of methods: 1, increasing LED number, but will increase cost；2, it is covered using the diffuser plate of haze, but can sacrifice and wear Saturating rate；2, increase the gap (air Gap) between LED and diaphragm, but membrane material support difficulty increases, and it is whole thick to will increase mould group Degree, and it is not suitable for narrow frame product, product entirety poor seismic behavior.

Utility model content

Technical problem to be solved by the utility model is to provide a kind of backlight module and using the display of the backlight module Device can effectively optimize LED light shadow, promote Mini-LED entirety display effect.

To solve the above-mentioned problems, the utility model provides a kind of backlight module, including multiple LED luminescence chips and one The light emission side of the LED luminescence chip is arranged in quantum dot film, the quantum dot film, in the light emission side of the LED luminescence chip Multiple diffusion blocks are additionally provided with, the diffusion block and the LED chip correspond.

In one embodiment, the quantum dot film is arranged in towards the side of the LED luminescence chip in the diffusion block.

In one embodiment, the width of the diffusion block meets following formula: W=2*H*tan (1/2* α), wherein W is The width of the diffusion block, H is distance of the LED luminescence chip to the quantum dot film, and α is the LED luminescence chip Light type angle.

In one embodiment, the side that the quantum dot film deviates from the LED luminescence chip is arranged in the diffusion block.

In one embodiment, the width of the diffusion block meets following formula: W=2* (H+H1) * tan (1/2* α), In, W is the width of the diffusion block, and H is distance of the LED luminescence chip to the quantum dot film, and H1 is the quantum dot The thickness of film, α are the light type angles of the LED luminescence chip.

In one embodiment, there are multiple particles, the partial size of the particle is greater than 15 microns inside the diffusion block.

In one embodiment, the mist degree of the diffusion block is greater than 80%.

In one embodiment, the width of the LED luminescence chip is less than the width of the diffusion block.

In one embodiment, the backlight module further includes an at least diffusion barrier, and the diffusion barrier is arranged in the quantum Point film deviates from the side of the LED luminescence chip.

A kind of display device of the utility model, which is characterized in that be arranged including an above-mentioned backlight module and one described LCD display panel on backlight module.

The utility model has the advantage of the corresponding diffusion blocks of each LED luminescence chip, so that described in each The light of LED luminescence chip transmitting is further spread, then the gap between the adjacent two LED luminescence chips is spread Light supplement promotes Mini-LED entirety display effect so as to effectively optimize LED light shadow；The utility model backlight module Do not increase mould group thickness as far as possible, under the premise of reducing mould group power consumption penalty, optimizes Mini-LED lamp shadow problem；And in identical thickness Degree is lower, it can be achieved that LED subtracts lamp design, in reduction, large scale Mini-LED mould group cost.

Detailed description of the invention

Fig. 1 is the detonation configuration signal of the first embodiment of the utility model backlight module；

Fig. 2 is the partial structural diagram of the first embodiment of the utility model backlight module；

Fig. 3 is the partial structural diagram of the second embodiment of the utility model backlight module；

Fig. 4 is the structural schematic diagram of the utility model display panel.

Specific embodiment

The tool of display device to backlight module provided by the utility model and using the backlight module with reference to the accompanying drawing Body embodiment elaborates.

Fig. 1 is the detonation configuration signal of the first embodiment of the utility model backlight module, and Fig. 2 is the utility model backlight The partial structural diagram of the first embodiment of mould group.Fig. 1 and Fig. 2 is please referred to, the utility model backlight module includes multiple LED Luminescence chip 10 and a quantum dot film 11.

The LED luminescence chip 10 includes but is not limited to blue chip, and the light source as the backlight module uses.It is more A LED luminescence chip 10 is arranged in matrix, wherein the size and quantity of the LED luminescence chip 10 can be according to design need It asks and is selected.Wherein, multiple LED luminescence chips 10 may be provided on a light source circuit board 14.

The light emission side of the LED luminescence chip 10 is arranged in the quantum dot film 11.Specifically, it shines in the OLED The light emission side of chip 10 shrouds whole OLED luminescence chips 10, and the quantum dot film 11 in the quantum dot film 11 There is a distance between the OLED luminescence chip 10.What the quantum dot film 11 was used to issue the LkED luminescence chip Light is converted into white light.In the present embodiment, the LED luminescence chip 10 is blue chip, then in the LED luminescence chip The light of 10 transmittings is emitted again after being radiated at quantum dot film 11, and the light of outgoing is white light.Wherein, the structure of the quantum dot film 11 For the conventional structure of backlight module, repeat no more.

Multiple diffusion blocks 12, the diffusion block 12 and described 623 are additionally provided in the light emission side of the LED luminescence chip 10 Chip 10 corresponds.Specifically, the corresponding diffusion block 12 of a LED chip 10.The diffusion block 12 is used for will The light diffusion that the LED luminescence chip 10 emits.The advantages of the utility model backlight module, is that each described LED shines Chip 10 corresponds to a diffusion block 12, so that the light that each described LED luminescence chip 10 emits further is spread, then it is adjacent Two LED luminescence chips 10 between light gap supplemented by diffusion light, so as to effectively optimize LED light shadow, mention Mini-LED entirety display effect is risen, does not increase the thickness of Mini-LED entirety mould group substantially, realizes that product is lightening.

In the first embodiment, the diffusion block 12 setting is in the quantum dot film 11 towards the LED luminescence chip 10 Side.Specifically, the surface of the quantum dot film 11 is arranged in the diffusion block 12, which shines towards the LED Chip 10.In order to further strengthen the diffusion effect of the diffusion block 12, in the present embodiment, the width of the diffusion block 12 It meets certain condition.Specifically, in the present embodiment, referring to Fig. 2, the width of the diffusion block 12 meets following formula:

W=2*H*tan (1/2* α)

Wherein, W is the width of the diffusion block 12, H be the LED luminescence chip 10 to the quantum dot film 11 away from From α is the light type angle of the LED luminescence chip 10.

For the light diffusion for further emitting the LED luminescence chip 10, there are multiple grains inside the diffusion block 12 The partial size of son, the particle is greater than 15 microns, to improve the diffusion effect for the light that the LED luminescence chip 10 emits.The grain Son includes but is not limited to resin particle.Wherein, conventional method preparation can be used in the diffusion block 12.It illustrates described in preparation It spreads the method for block 12: microparticle a, being added in a solvent, stir until particulate is evenly spread in solvent；B, it is walked in a Coating resin and curing agent are added in rapid mixture, is sufficiently stirred；C, a coating exposure mask is provided, is contained and Mini-LED The corresponding mesh of spacing, spreads coating exposure mask, the mixture of b step is uniformly coated on quantum dot layer, described in formation Spread block.

Optionally, the mist degree of the diffusion block 12 is greater than 80%, to further increase the diffusion of the diffusion block 12. Further, the width of the LED luminescence chip 10 is less than the width of the diffusion block 12, to guarantee the LED luminescence chip 10 The light of transmitting is flooded to the intersection of two LED luminescence chips 10.

Further, the backlight module further includes an at least diffusion barrier 13.The diffusion barrier 13 is arranged in the quantum dot Film 11 deviates from the side of the LED luminescence chip 10.Specifically, in the present embodiment, deviate from institute in the quantum dot film 11 The side setting of LED luminescence chip 10 is stated there are two diffusion barrier 13.In the other embodiments of the utility model backlight module, in institute It states quantum dot film 11 and other optical elements also can be set away from the side of the LED luminescence chip 10, to improve backlight module Luminescent properties.

Fig. 3 is the partial structural diagram of the second embodiment of the utility model backlight module.Referring to Fig. 3, this is practical Novel second embodiment is that the position of the diffusion block setting and size are different from the difference of first embodiment.Specifically, In a second embodiment, the side that the quantum dot film 11 deviates from the LED luminescence chip 10 is arranged in the diffusion block 12, i.e., A surface of the quantum dot film 11 is arranged in the diffusion block 12, which deviates from the LED luminescence chip 10, that is, It says, the quantum dot film 11, and the quantum dot film 11 is provided between the diffusion block 12 and the LED luminescence chip 10 There is a distance to the LED luminescence chip 10, and the surface of the quantum dot film 11 is then arranged in the diffusion block 12.For The diffusion effect of the diffusion block 12 is further strengthened, in the present embodiment, the width of the diffusion block 12 meets certain item Part.Specifically, in the present embodiment, referring to Fig. 3, the width of the diffusion block 12 meets following formula:

W=2* (H+H1) * tan (1/2* α)

Wherein, W is the width of the diffusion block, and H is distance of the LED luminescence chip to the quantum dot film, and H1 is The thickness of the quantum dot film, α are the light type angles of the LED luminescence chip.

The utility model also provides a kind of display device.Fig. 4 is the structural schematic diagram of the utility model display panel.It please join Read Fig. 4, the utility model display panel it include that LCD on the backlight module 100 is arranged in a backlight module 100 and one Display panel 200.The structure of the backlight module 100 is identical as the structure of above-mentioned backlight module, the backlight module 100 Backlight is provided for the LCD display panel 200.

The advantages of the utility model display device is, adjacent two of the backlight module 100 LED luminescence chip it Between light gap supplemented by diffusion light, so as to effectively optimize LED light shadow, promote display device entirety display effect, and Substantially the thickness for not increasing display device can not also influence the thickness of product while promoting display device entirety display effect Degree.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art Art personnel can also make several improvements and modifications without departing from the principle of this utility model, these improvements and modifications Also it should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of backlight module, which is characterized in that including multiple LED luminescence chips and a quantum dot film, the quantum dot film is set The light emission side in the LED luminescence chip is set, is additionally provided with multiple diffusion blocks in the light emission side of the LED luminescence chip, it is described It spreads block and the LED chip corresponds.

2. backlight module according to claim 1, which is characterized in that the diffusion block is arranged in the quantum dot film direction The side of the LED luminescence chip.

3. backlight module according to claim 2, which is characterized in that the width of the diffusion block meets following formula: W= 2*H*tan (1/2* α), wherein W is the width of the diffusion block, H be the LED luminescence chip to the quantum dot film away from From α is the light type angle of the LED luminescence chip.

4. backlight module according to claim 1, which is characterized in that the diffusion block setting deviates from the quantum dot film The side of the LED luminescence chip.

5. backlight module according to claim 4, which is characterized in that the width of the diffusion block meets following formula: W= 2* (H+H1) * tan (1/2* α), wherein W is the width of the diffusion block, and H is the LED luminescence chip to the quantum dot film Distance, H1 is the thickness of the quantum dot film, and α is the light type angle of the LED luminescence chip.

6. backlight module according to claim 1, which is characterized in that there are multiple particles inside the diffusion block, it is described The partial size of particle is greater than 15 microns.

7. backlight module according to claim 1, which is characterized in that the mist degree of the diffusion block is greater than 80%.

8. backlight module according to claim 1, which is characterized in that the width of the LED luminescence chip is less than the expansion Dissipate the width of block.

9. backlight module according to claim 1, which is characterized in that the backlight module further includes an at least diffusion barrier, The side that the quantum dot film deviates from the LED luminescence chip is arranged in the diffusion barrier.

10. a kind of display device, which is characterized in that be arranged including a backlight module as described in claim 1 and one described LCD display panel on backlight module.