CN207624353U - Straight-down negative display led backlight module - Google Patents
Straight-down negative display led backlight module Download PDFInfo
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- CN207624353U CN207624353U CN201721363312.4U CN201721363312U CN207624353U CN 207624353 U CN207624353 U CN 207624353U CN 201721363312 U CN201721363312 U CN 201721363312U CN 207624353 U CN207624353 U CN 207624353U
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- 239000004615 ingredient Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 2
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Abstract
The utility model discloses a kind of straight-down negative display led backlight modules,Including picture surface sweeping device,Light intensity sensor,Master controller,LED drive module,Direct-light type LED backlight module,It can be according to the power of the strong and weak automatic adjustment white light LEDs of ambient light,Improve the legibility of display,User is avoided not see or feel very dazzling when ambient light is very dark in the case that ambient light is very strong,Backlight illumination is significantly compensated simultaneously,RGB primitive colours LEDs can be according to showing that the three primary colors of picture are analyzed and the light intensity of primitive colours LED is adjusted,To be allowed to blend and backlight similar in display picture,The colour gamut of display picture can be made to increase substantially 150% or so,Dynamic contrast is set to reach ten thousand grades of ratios 1,This backlight module is to LED independent controls,It can more easily arrange to lamp bar scheme.
Description
Technical field
The utility model is related to panel TV set technical field, more particularly to a kind of straight-down negative display led backlight module.
Background technology
With the development of flat panel TV industry, as television set important component backlight module scheme in order to adapt to difference
Market demands constantly change in optics taste, cost structure in optical index.
LED used in traditional LED backlight scheme is white light LEDs, although some are also to use monochromatic light and mixed light of fluorescent powder
It forms, but still has color reducibility poor, be only capable of providing NTSC (NationalTelevision System
Committee) in standard colour gamut 72% or so, the LED's of high colour gamut can only also accomplish 90% or so.
Existing high colour gamut, high contrast only have OLED technology, but current OLED technology is that domain variability is immature in TV,
It is of high cost, the shortcomings of short life.
Invention content
In order to overcome drawbacks described above, the utility model to provide a kind of straight-down negative display led backlight module, backlight module
Light intensity can be automatically adjusted according to ambient light light intensity, improve the legibility of display and visual fatigue can be alleviated, light intensity is also
It should be able to be adjusted according to ambient enviroment and user demand, user is avoided not see display content when ambient light is very strong, or
Feel when ambient light is very dark dazzling.
The utility model in order to solve its technical problem used by technical solution be：A kind of straight-down negative display led back of the body
Optical mode group, including picture surface sweeping device, light intensity sensor, master controller, LED drive module, direct-light type LED backlight module,
In：
Picture surface sweeping and light intensity inductor：The module includes two parts, first part, and system passes through high frequency scan
Then this signal is quickly passed back to central processing unit and is converted into other by television image to analyze the color ratio of frame out
Signal；Another part quickly passes back to central processing unit and is converted into it by the bright dark ingredient of induction television machine ambient enviroment
The available signal of his module；
Main control module：This module is mainly to carry out processing to the signal that sensing device comes, and is then converted into LED
The useful signal of driving device；
LED drive module：This module includes mainly adjusting and power supply two parts, the control signal to be come by main control module into
Enter to adjust part, the signal of driving constant current is then converted into, then by the power supply of power unit output driving LED.This module master
If the grouping to LED controls, wherein have and be divided into single intensity control of RGB primitive colours LEDs and carried out to white light LEDs
Grouping or single control；
Direct-light type LED backlight module：Tetra- lamp beads of WRGB are one group respectively for lamp bar arrangement in LED module, wherein putting
For position white light LEDs in centre, RGB primitive colours LEDs arrange surrounding, are the progress lamp bar scheme row as unit of WRGB in entire module
Cloth；
Light intensity sensor is connect with controller, and picture scanning means is connected with controller, the environment for will detect
The light intensity input controller of light, and scanning picture color analyze three primary colors light intensity；Controller is connect with LED drive module,
For the three primary colors intensity control LED drive module according to ambient light；LED drive module is connect with direct-light type LED backlight module,
The light of primaries intensity and white light LEDs for adjusting direct-light type LED backlight module according to the output signal of controller
By force.
The LED in the direct-light type LED backlight module is grouped single control as a further improvement of the utility model,
Unit LED groups can arbitrarily position arrangement.
The utility model has the beneficial effects that：The utility model has the following advantages：
1. can improving the legibility of display according to the power of the strong and weak automatic adjustment white light LEDs of ambient light, avoiding using
Family is not seen or feels very dazzling when ambient light is very dark in the case that ambient light is very strong, at the same to backlight illumination into
Row significantly compensates.
2.RGB primitive colours LEDs can be according to showing that the three primary colors of picture are analyzed and are adjusted to the light intensity of primitive colours LED
Section can make the colour gamut of display picture increase substantially 150% or so to be allowed to blend and show backlight similar in picture,
Dynamic contrast is set to reach ten thousand grades of ratios 1.
3. a backlight module is to LED independent controls, can more easily arrange to lamp bar scheme.
Description of the drawings
Fig. 1 is the lamp bar arrangement schematic diagram in the utility model LED module；
Fig. 2 is the utility model direct-light type LED backlight module schematic diagram；
Fig. 3 is utility model works principle schematic；
It is indicated in figure：W- white light LEDs, R- red LEDs, G- green LEDs, B- blue leds.
Specific implementation mode
In order to deepen the understanding to the utility model, the utility model is made below in conjunction with embodiment and attached drawing further
It is described in detail, which is only used for explaining the utility model, does not constitute the restriction to scope of protection of the utility model.
Fig. 1 shows a kind of a kind of embodiment of straight-down negative display led backlight module of the utility model, including picture
Surface sweeping device, light intensity sensor, master controller, LED drive module, direct-light type LED backlight module, wherein：
Picture surface sweeping and light intensity inductor：The module includes two parts, first part, and system passes through high frequency scan
Then this signal is quickly passed back to central processing unit and is converted into other by television image to analyze the color ratio of frame out
Signal；Another part quickly passes back to central processing unit and is converted into it by the bright dark ingredient of induction television machine ambient enviroment
The available signal of his module；
Main control module：This module is mainly to carry out processing to the signal that sensing device comes, and is then converted into LED
The useful signal of driving device；
LED drive module：This module includes mainly adjusting and power supply two parts, the control signal to be come by main control module into
Enter to adjust part, the signal of driving constant current is then converted into, then by the power supply of power unit output driving LED.This module master
If the grouping to LED controls, wherein have and be divided into single intensity control of RGB primitive colours LEDs and carried out to white light LEDs
Grouping or single control；
Direct-light type LED backlight module：Tetra- lamp beads of WRGB are one group respectively for lamp bar arrangement in LED module, wherein putting
For position white light LEDs in centre, RGB primitive colours LEDs arrange surrounding, are the progress lamp bar scheme row as unit of WRGB in entire module
Cloth, as shown in Figure 1；
As shown in figure 3, light intensity sensor is connect with controller, picture scanning means is connected its operating principle with controller
It connects, for the light intensity input controller of the ambient light detected, and scanning picture color to be analyzed three primary colors light intensity；Control
Device is connect with LED drive module, for the three primary colors intensity control LED drive module according to ambient light；LED drive module with it is straight
Light type LED backlight module connects, the three primary colors light intensity for adjusting direct-light type LED backlight module according to the output signal of controller
The light intensity of degree and white light LEDs.
LED in the direct-light type LED backlight module is grouped single control, and unit LED groups can arbitrarily position arrangement.
Claims (2)
1. a kind of straight-down negative display led backlight module, it is characterised in that：Including picture surface sweeping device, light intensity sensor, master control
Device processed, LED drive module, direct-light type LED backlight module, wherein：
Picture surface sweeping and light intensity inductor：The module includes two parts, first part, and system passes through high frequency scan TV
Then this signal is quickly passed back to central processing unit and is converted into other signals by picture to analyze the color ratio of frame out；
Another part quickly passes back to central processing unit and is converted into other moulds by the bright dark ingredient of induction television machine ambient enviroment
The available signal of block；
Main control module：This module is used to carry out processing to the signal that sensing device comes, and is then converted into and drives dress to LED
The signal being equipped with；
LED drive module：This module includes the two parts that adjust and power, and the control signal to be come by main control module enters adjustment portion
Point, it is then converted into the signal of driving constant current, then by the power supply of power unit output driving LED；This module is used for LED's
Grouping control, wherein have and be divided into the single intensity control to RGB primitive colours LEDs and white light LEDs be grouped or single
Control；
Direct-light type LED backlight module：Tetra- lamp beads of WRGB are one group, wherein placement position respectively for lamp bar arrangement in LED module
For white light LEDs in centre, RGB primitive colours LEDs arrange surrounding, are the progress lamp bar scheme arrangement as unit of WRGB in entire module；
Light intensity sensor is connect with controller, and picture scanning means is connected with controller, for by the ambient light detected
Light intensity input controller, and scanning picture color analyze three primary colors light intensity；Controller is connect with LED drive module, is used for
According to the three primary colors intensity control LED drive module of ambient light；LED drive module is connect with direct-light type LED backlight module, is used for
The primaries intensity of direct-light type LED backlight module and the light intensity of white light LEDs are adjusted according to the output signal of controller.
2. straight-down negative display led backlight module according to claim 1, it is characterised in that：The direct-light type LED backlight
LED in module is grouped single control, and unit LED groups can arbitrarily position arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363312.4U CN207624353U (en) | 2017-10-23 | 2017-10-23 | Straight-down negative display led backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721363312.4U CN207624353U (en) | 2017-10-23 | 2017-10-23 | Straight-down negative display led backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207624353U true CN207624353U (en) | 2018-07-17 |
Family
ID=62826018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721363312.4U Active CN207624353U (en) | 2017-10-23 | 2017-10-23 | Straight-down negative display led backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207624353U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796457A (en) * | 2020-05-08 | 2020-10-20 | 赣州市牧士电子有限公司 | Backlight module for 8K intelligent digital television |
-
2017
- 2017-10-23 CN CN201721363312.4U patent/CN207624353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796457A (en) * | 2020-05-08 | 2020-10-20 | 赣州市牧士电子有限公司 | Backlight module for 8K intelligent digital television |
| WO2021223228A1 (en) * | 2020-05-08 | 2021-11-11 | 赣州市牧士电子有限公司 | Backlight module for 8k smart digital tv |
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