CN102136253A - Hybrid LED (light-emitting diode) backlight source drive method - Google Patents
Hybrid LED (light-emitting diode) backlight source drive method Download PDFInfo
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- CN102136253A CN102136253A CN2011100756104A CN201110075610A CN102136253A CN 102136253 A CN102136253 A CN 102136253A CN 2011100756104 A CN2011100756104 A CN 2011100756104A CN 201110075610 A CN201110075610 A CN 201110075610A CN 102136253 A CN102136253 A CN 102136253A
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Abstract
The invention discloses a hybrid LED (light-emitting diode) backlight source drive method. In the drive method, MXN regions are divided in a row-column way according to the physical distinguishability and display effect of a liquid crystal display screen firstly; a whole LED (light-emitting diode) backlight source is divided into corresponding MXN regions according to the division way of the liquid crystal display; then which region in the MXN regions an inputted video signal belongs to is judged; and the maximum value of each region is respectively calculated dynamically; finally the MXN values obtained through dynamic statistics are sent to a drive board of the LED (light-emitting diode) backlight source; and the drive board respectively drives each LED (light-emitting diode) backlight source region. The hybrid LED (light-emitting diode) backlight source drive method has simple drive method, low realization cost as well as light and thin structure. A direct type LED (light-emitting diode) backlight source drive method has the characteristics of implementing zoning dynamic statistics and having good brightness uniformity.
Description
Technical field
The present invention relates to the backlight of LCD technical field, be specifically related to a kind of hybrid LED-backlit source driving method.
Background technology
The LCD display technique need realize Presentation Function by backlight as a kind of non-self luminous display technique.Along with the continuous development of lcd technology, the LCD particularly application of colour liquid crystal display device is also constantly being widened.Spurred by the market of LCD, the backlight industry also presents a scene of prosperity.The LED-backlit source has great researching value and meaning as a kind of backlight with development potentiality.
The LED-backlit source is divided into two kinds according to the unusual of light source placement location, and a kind of is the side light type LED back light source, and a kind of is direct LED backlight.It is thin that the characteristics in side light type LED back light source are that backlight can be done, and cost is low, but the white brightness lack of homogeneity.The characteristics of direct LED backlight are the white brightness good uniformities, can carry out the subregion dynamic light adjustment, but that backlight can not be done is thin, the cost height.
Summary of the invention
The objective of the invention is to propose a kind of driving method that can have side-light type and direct LED backlight characteristics concurrently, the driving method that just a kind of type of drive is simple, cost is lower, brightness uniformity is good.
Technical scheme of the present invention is achieved in that
This driving method is divided into M according to the demand of the physical resolution of liquid crystal display and display effect according to the mode of ranks and multiply by N zone, M is that natural number is less than row physical resolution value, represent the number of regions that every row is divided, N is that natural number is less than the row physical resolution, represent the number of regions that every row are divided, the LED-backlit source is positioned at the liquid crystal display back side, is divided into corresponding M according to the dividing mode of liquid crystal display and multiply by N zone
The vision signal of input is the signal that sends to liquid crystal display through the decoding back according to the ranks order, judge that by pointwise the vision signal of input belongs to M and multiply by which zone in N the zone, and dynamic statistics goes out each regional maximal value respectively, the M that dynamic statistics is obtained multiply by N maximal value and sends to LED-backlit source drive plate as the brightness value of each LED-backlit source region, drive plate drives each LED-backlit source region respectively
The M that divides multiply by each zone in N the zone all as a side light type LED back light source apparatus, and the type of drive in employing side light type LED back light source realizes.
The characteristics of a kind of hybrid LED-backlit source driving method of the present invention are to have had the characteristics in side light type LED back light source and the characteristics of direct LED backlight driving method concurrently.The characteristics of side light type LED back light source driving method are that type of drive is simple, realize that cost is low, and structure is frivolous, and the characteristics of direct LED backlight driving method are to carry out the subregion dynamic statistics, and brightness uniformity is good.
Description of drawings
Fig. 1 is hybrid LED-backlit source apparatus.
Fig. 2 is hybrid LED-backlit source driving method sketch.
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
Embodiment
As shown in Figure 1, apparatus of the present invention comprise LED-backlit source framework 11, LED lamp bar 12, light guide plate 13.
As shown in Figure 2, hybrid LED-backlit source driving method comprises vision signal input block 21, LED-backlit source control panel 22, LED-backlit source drive plate 23, LED-backlit source apparatus 24.
The concrete implementation step of this hybrid LED-backlit source driving method is as follows:
1, according to the physical resolution of LCD screen and actual demand, whole liquid crystal display be divided into M multiply by N regional, for example 1920 screens that multiply by 1080 resolution can be divided into 4 according to the demand of cost and display effect and multiply by 3 zones.
2, LED-backlit source apparatus 24 is divided into corresponding M according to the dividing mode of LCD screen and multiply by N zone, and each zone is equivalent to a side light type LED back light source unit.Fig. 1 is an example to divide two zones.
3, LED-backlit source control panel 22 is judged which zone that belongs to of video input signals according to the area dividing situation.
4,, calculate each regional brightness maximal value, as the backlight brightness values of one's respective area according to the region decision situation.
5, the brightness value of statistics is sent to LED-backlit source drive plate 23 and drive whole hybrid LED-backlit source apparatus 24.
Claims (1)
1. hybrid LED-backlit source driving method, it is characterized in that: this driving method is divided into M according to the demand of the physical resolution of liquid crystal display and display effect according to the mode of ranks and multiply by N zone, M is that natural number is less than row physical resolution value, represent the number of regions that every row is divided, N is a natural number less than the row physical resolution, represents the number of regions that every row are divided, and the LED-backlit source is positioned at the liquid crystal display back side, be divided into corresponding M according to the dividing mode of liquid crystal display and multiply by N zone
The vision signal of input is the signal that sends to liquid crystal display through the decoding back according to the ranks order, judge that by pointwise the vision signal of input belongs to M and multiply by which zone in N the zone, and dynamic statistics goes out each regional maximal value respectively, the M that dynamic statistics is obtained multiply by N maximal value and sends to LED-backlit source drive plate as the brightness value of each LED-backlit source region, drive plate drives each LED-backlit source region respectively
The M that divides multiply by each zone in N the zone all as a side light type LED back light source apparatus, and the type of drive in employing side light type LED back light source realizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100756104A CN102136253A (en) | 2011-03-28 | 2011-03-28 | Hybrid LED (light-emitting diode) backlight source drive method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100756104A CN102136253A (en) | 2011-03-28 | 2011-03-28 | Hybrid LED (light-emitting diode) backlight source drive method |
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| CN102136253A true CN102136253A (en) | 2011-07-27 |
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| CN2011100756104A Pending CN102136253A (en) | 2011-03-28 | 2011-03-28 | Hybrid LED (light-emitting diode) backlight source drive method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298908A (en) * | 2011-09-16 | 2011-12-28 | Tcl光电科技(惠州)有限公司 | Dimming method for light-emitting diode (LED) liquid crystal module and direct type LED liquid crystal module |
| CN102930831A (en) * | 2012-11-06 | 2013-02-13 | 青岛海信信芯科技有限公司 | Liquid crystal display screen image displaying method, device and liquid crystal display television |
| CN102968963A (en) * | 2012-11-30 | 2013-03-13 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight driving circuit, liquid crystal display and driving method |
| CN104332139A (en) * | 2013-07-22 | 2015-02-04 | 联想(北京)有限公司 | Display device, electronic terminal and backlight control method |
| CN106847192A (en) * | 2017-02-06 | 2017-06-13 | 京东方科技集团股份有限公司 | The adjusting method and its regulating system, display device of a kind of local backlight brightness |
| CN109725464A (en) * | 2019-03-15 | 2019-05-07 | 四川长虹电器股份有限公司 | Straight downside enters the liquid crystal module group backlight display device of combination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101211537A (en) * | 2006-12-31 | 2008-07-02 | 深圳Tcl工业研究院有限公司 | LCD television set backlight control system and method |
| US20090267890A1 (en) * | 2008-04-29 | 2009-10-29 | Samsung Electronics Co., Ltd. | Method of local dimming a light source, light source apparatus for performing the method, and display apparatus having the light source apparatus |
| CN201741368U (en) * | 2010-07-29 | 2011-02-09 | 海尔集团公司 | Display device |
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2011
- 2011-03-28 CN CN2011100756104A patent/CN102136253A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211537A (en) * | 2006-12-31 | 2008-07-02 | 深圳Tcl工业研究院有限公司 | LCD television set backlight control system and method |
| US20090267890A1 (en) * | 2008-04-29 | 2009-10-29 | Samsung Electronics Co., Ltd. | Method of local dimming a light source, light source apparatus for performing the method, and display apparatus having the light source apparatus |
| CN201741368U (en) * | 2010-07-29 | 2011-02-09 | 海尔集团公司 | Display device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102298908A (en) * | 2011-09-16 | 2011-12-28 | Tcl光电科技(惠州)有限公司 | Dimming method for light-emitting diode (LED) liquid crystal module and direct type LED liquid crystal module |
| CN102930831A (en) * | 2012-11-06 | 2013-02-13 | 青岛海信信芯科技有限公司 | Liquid crystal display screen image displaying method, device and liquid crystal display television |
| CN102968963A (en) * | 2012-11-30 | 2013-03-13 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight driving circuit, liquid crystal display and driving method |
| CN102968963B (en) * | 2012-11-30 | 2015-07-15 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight driving circuit, liquid crystal display and driving method |
| CN104332139A (en) * | 2013-07-22 | 2015-02-04 | 联想(北京)有限公司 | Display device, electronic terminal and backlight control method |
| CN106847192A (en) * | 2017-02-06 | 2017-06-13 | 京东方科技集团股份有限公司 | The adjusting method and its regulating system, display device of a kind of local backlight brightness |
| CN106847192B (en) * | 2017-02-06 | 2020-02-18 | 京东方科技集团股份有限公司 | Local backlight brightness adjusting method and system and display device |
| CN109725464A (en) * | 2019-03-15 | 2019-05-07 | 四川长虹电器股份有限公司 | Straight downside enters the liquid crystal module group backlight display device of combination |
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Application publication date: 20110727 |