CN109712575A - A kind of ELED dynamic backlight source control system and control method - Google Patents
A kind of ELED dynamic backlight source control system and control method Download PDFInfo
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- CN109712575A CN109712575A CN201910124237.3A CN201910124237A CN109712575A CN 109712575 A CN109712575 A CN 109712575A CN 201910124237 A CN201910124237 A CN 201910124237A CN 109712575 A CN109712575 A CN 109712575A
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Abstract
The invention discloses a kind of ELED dynamic backlight source control system and control methods, wherein the system includes: backlight signal processing circuit, optical treatment plate, backlight driver plate and Static planar backlight；SOC picture signal is decoded as light and shade signal and light and shade signal is sent to optical treatment plate by backlight processing circuit for obtaining SOC picture signal；Optical treatment plate is equipped with transparent substrate；Optical treatment plate receives light and shade signal, and according to the on off operating mode of light valve on light and shade signal real-time control transparent substrate；Backlight driver plate provides electric energy for backlight signal processing circuit and Static planar backlight；Static planar backlight is used to provide dynamic light source through transparent substrate for liquid crystal display panel.By the way that SOC picture signal is converted to light and shade signal, the light that static backlight source is sent on liquid crystal display panel can control, liquid crystal display panel restores the picture finally shown according to the dynamic light source and SOC picture signal, to realize Dynamically Announce picture.
Description
Technical field
The present invention relates to dynamic backlight source control technology fields, and in particular, to a kind of ELED dynamic backlight source control system
System and control method.
Background technique
Currently, the LCD TV thickness with mainstream is more and more thinner, size is increasing and to television set color and comparison
It is higher and higher to requiring, there is the dynamic backlight source control system of DLED (straight-down negative LED), but ELED (side entering type LED)
Backlight optical control is blank in the industry.
Television set OC (liquid crystal display panel) mainly has two kinds of hard screen and soft screen in the industry, wherein hard screen is due to self structure characteristic
Although picture quality is higher than soft screen, it is also easy to produce light leakage and many complete system plants is allowed to hang back.
The dynamic backlight source control of existing DLED can only be controlled LED light by region and remove control backlight, and DLED in the industry
Television set limited due to self structure, thickness is all thicker than ELED.
Currently, static backlight source includes backlight driver plate and Static planar backlight for traditional backlight LED information display system
Source composition.Traditional ELED backlight acts below OC simply by a kind of planar light source of static state, controls picture by OC itself
Light and shade can not achieve dynamic backlight source control.
Summary of the invention
The present invention is in order to overcome and can not achieve dynamic backlight source control defect in the prior art according to the present invention one
A aspect proposes a kind of ELED dynamic backlight source control system.
A kind of ELED dynamic backlight source control system provided in an embodiment of the present invention, comprising: backlight signal processing electricity
Road, optical treatment plate, backlight driver plate and Static planar backlight；
Wherein, backlight processing circuit is for obtaining SOC picture signal, SOC picture signal is decoded as light and shade signal and will be bright
Dark signal is sent to optical treatment plate；
Optical treatment plate is equipped with transparent substrate, and transparent substrate is equipped with the light valve circuit penetrated for controlling light, and transparent base
Plate is arranged between static backlight source and liquid crystal display panel；Optical treatment plate receives light and shade signal, and is controlled in real time according to light and shade signal
The on off operating mode of light valve on transparent substrate processed；
Backlight driver plate is connected with backlight signal processing circuit and Static planar backlight, is backlight signal processing electricity
Road and Static planar backlight provide electric energy；
Static planar backlight is used to provide dynamic light source through transparent substrate for liquid crystal display panel.
In the above-mentioned technical solutions, light and shade signal includes clear signal and/or dark signal；
The light valve that optical treatment plate controls clear signal corresponding position is logical state, controls the light valve of dark signal corresponding position
For state of breaking.
In the above-mentioned technical solutions, SOC picture signal includes rgb signal and/or grayscale signal；
Rgb value in rgb signal is less than gray value in the signal and/or grayscale signal of default RGB threshold value by backlight processing circuit
Signal less than default gray value is converted to dark signal.
In the above-mentioned technical solutions, backlight signal processing circuit includes filter circuit and/or signal conversion circuit；
Filter circuit is for being filtered SOC picture signal；
Signal conversion circuit is used to SOC picture signal being converted to light and shade signal.
In the above-mentioned technical solutions, further includes: liquid crystal display panel；
Liquid crystal display panel is used to show final picture according to SOC picture signal and dynamic light source.
In the above-mentioned technical solutions, liquid crystal display panel TFT-LCD.
In the above-mentioned technical solutions, liquid crystal display panel integrates TCON；TCON is used to SOC picture signal being converted to liquid crystal surface
Operating voltage needed for plate, working signal and/or clock signal.
In the above-mentioned technical solutions, further includes: SOC；
SOC is connected with backlight signal processing circuit and TCON respectively, for respectively backlight signal processing circuit and TCON
SOC picture signal is provided.
Based on same inventive concept, the embodiment of the present invention also provides a kind of dynamic backlight source control control method, packet
It includes:
SOC picture signal is received, and SOC picture signal is decoded as light and shade signal；
According to the on off operating mode of light valve on the transparent substrate of light and shade signal real-time control optical treatment plate, transparent substrate setting exists
Between static backlight source and liquid crystal display panel；
Control static backlight source threw transparent substrate and provides dynamic light source for liquid crystal display panel, indicated liquid crystal display panel according to SOC picture
Signal and dynamic light source show final picture.
In the above-mentioned technical solutions, SOC picture signal is decoded as light and shade signal, comprising:
Obtain the rgb signal and/or grayscale signal in SOC picture signal；
Rgb value in rgb signal is less than gray value in the signal and/or grayscale signal of default RGB threshold value and is less than default gray value
Signal be converted to dark signal.
A kind of ELED dynamic backlight source control system provided in an embodiment of the present invention and control method, by by SOC picture
Signal is converted to light and shade signal, and then can control static backlight source by the transparent substrate on optical treatment plate and be sent to liquid
Light in crystal panel, the optical treatment plate and static backlight source constitute dynamic backlight source, and liquid crystal display panel is according to the dynamic optical
Source and SOC picture signal restore the picture finally shown, to realize Dynamically Announce picture.Dynamic backlight source is in black picture
Black signal or local black signal can be provided under the lower or black picture in part to liquid crystal display panel LCD, prevent light from being radiated at liquid crystal surface
Plate lower surface will not generate leakage problem accordingly even when LCD locally has stress；Meanwhile it also being experienced in overall picture expression
Less than bad light-leaking.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the first structure figure of ELED dynamic backlight source control system in the embodiment of the present invention；
Fig. 2 is the second structure chart of ELED dynamic backlight source control system in the embodiment of the present invention；
Fig. 3 is the flow chart of ELED dynamic backlight operated control method in the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
According to embodiments of the present invention, a kind of ELED dynamic backlight source control system is provided, Fig. 1 is system structure signal
Figure, specifically includes: backlight signal processing circuit 10, optical treatment plate 20, backlight driver plate 30 and Static planar backlight
40。
Specifically, backlight processing circuit 10 and SCO (SystemonaChip, system on chip) are connected, for obtaining SOC
The SOC picture signal of sending, while SOC picture signal is decoded as light and shade signal and light and shade signal is sent to optical treatment
Plate 20.SOC picture signal includes rgb signal and/or grayscale signal；
In the embodiment of the present invention, light and shade signal includes clear signal and/or dark signal.Wherein, backlight processing circuit believes RGB
The signal that rgb value is less than default RGB threshold value in number is converted to dark signal；Or backlight processing circuit will be grey in grayscale signal
The signal that angle value is less than default gray value is converted to dark signal.Wherein, rgb value includes tri- values of R, G, B, three can be worth
The signal of respectively less than a certain preset value is converted to dark signal, and the signal that the sum of three values can also be less than to a certain preset value turns
It is changed to dark signal.Remaining signal is converted to clear signal by backlight processing circuit, which has been more than certain
Value, human eye sense organ are colour picture.Simultaneously, it should be noted that backlight processing circuit 10 is as unit of pixel, by SOC
Picture signal is decoded as light and shade signal；I.e. each corresponding clear signal of pixel or a dark signal.
Optical treatment plate 20 is equipped with transparent substrate, which, which is equipped with, can control the light valve circuit that light penetrates,
The light through and off for being emitted to liquid crystal display panel for controlling static backlight source.The transparent substrate setting static backlight source 40 with
Between liquid crystal display panel；Optical treatment plate 20 receives light and shade signal, and according to light valve on light and shade signal real-time control transparent substrate
On off operating mode.Specifically, the light valve that optical treatment plate 20 controls clear signal corresponding position is logical state, dark signal phase is controlled
Answering the light valve at position is disconnected state.
For example, the light that static backlight source 40 emits can penetrate when a certain light valve on transparent substrate is logical state
The light valve emits to liquid crystal display panel；When the corresponding signal of a certain light valve on the transparent substrate is changed to dark signal, then the light valve
It is set as disconnected state, the light that the light valve on transparent substrate stops static backlight source 40 to emit at this time, i.e. phase on liquid crystal display panel
Black picture is shown as at the position answered.
Existing general backlight source is lasting area source, thus liquid crystal display panel LCD can only be realized by itself circuit it is black
Field signal；IPS in the market shields firmly, because of the particularity of its electric appliance theory structure, is answered in LCD itself by itself or the external world
It will appear picture under power under black picture to show extremely and (be ater picture originally, but light can be appeared), referred to as light leakage.
In the embodiment of the present invention, dynamic backlight source can be provided to liquid crystal display panel LCD under black picture or under the black picture in part black signal or
Local black signal prevents light from being radiated at liquid crystal display panel lower surface, accordingly even when LCD locally has stress, will not generate leakage
Optical issue；Meanwhile it also experiencing in overall picture expression less than bad light-leaking.
Backlight driver plate 30 is connected with backlight signal processing circuit 10 and Static planar backlight 40, is backlight
Signal processing circuit 10 and Static planar backlight 40 provide electric energy；Static planar backlight 40 is used to penetrate optical treatment plate
20 transparent substrate provides dynamic light source for liquid crystal display panel.
A kind of ELED dynamic backlight source control system provided in an embodiment of the present invention, by being converted to SOC picture signal
Light and shade signal, and then static backlight source can control by the transparent substrate on optical treatment plate and be sent on liquid crystal display panel
Light, the optical treatment plate and static backlight source constitute dynamic backlight source, and liquid crystal display panel is drawn according to the dynamic light source and SOC
The picture that face signals revivification is finally shown out, to realize Dynamically Announce picture.
Preferably, backlight signal processing circuit 10 includes filter circuit and/or signal conversion circuit.Wherein, filtered electrical
Road is for being filtered SOC picture signal；Signal conversion circuit is used to SOC picture signal being converted to light and shade signal.
Specifically, filtering clear signal according to filter circuit, only retain dark signal, and control thoroughly according to the dark signal of reservation
Corresponding light valve is disconnected state on bright substrate (remaining point keeps logical state).Signal conversion circuit can be directly by SOC picture signal
Be converted to clear signal and/or dark signal.
Preferably, shown in Figure 2, which further includes liquid crystal display panel 50；Liquid crystal display panel 50 is used for according to SOC picture
Signal and dynamic light source show final picture.
Wherein, which is specifically as follows TFT-LCD (ThinFilmTransistorLiquid
CrystalDisplay, Thin Film Transistor-LCD), voltage is generated using thin film transistor (TFT), control liquid crystal turns to.
The liquid crystal display panel 50 integrates TCON or external TCON (TimerControlRegister, timer/counter
Control register).TCON for operating voltage, working signal needed for SOC picture signal is converted to liquid crystal display panel and/or
Clock signal.Specifically, various timing control signals required for integrated circuit being generated according to the clock signal of input.
Preferably, shown in Figure 2, the device further include: SOC；SOC respectively with backlight signal processing circuit 10 and
TCON is connected, and provides SOC picture signal for respectively backlight signal processing circuit 10 and TCON.
A kind of ELED dynamic backlight source control system provided in an embodiment of the present invention, by being converted to SOC picture signal
Light and shade signal, and then static backlight source can control by the transparent substrate on optical treatment plate and be sent on liquid crystal display panel
Light, the optical treatment plate and static backlight source constitute dynamic backlight source, and liquid crystal display panel is drawn according to the dynamic light source and SOC
The picture that face signals revivification is finally shown out, to realize Dynamically Announce picture.Dynamic backlight source is under black picture or part is black
Black signal or local black signal can be provided under picture to liquid crystal display panel LCD, prevent light from being radiated at liquid crystal display panel lower surface,
Accordingly even when LCD locally has stress, leakage problem will not be generated；Meanwhile it also experiencing in overall picture expression less than light leakage
It is bad.
Based on same inventive concept, the embodiment of the present invention also provides a kind of ELED dynamic backlight operated control method, referring to
Shown in Fig. 3, the method comprising the steps of 301-303:
Step 301: receiving SOC picture signal, and SOC picture signal is decoded as light and shade signal.
Step 302: according to the on off operating mode of light valve on the transparent substrate of light and shade signal real-time control optical treatment plate, thoroughly
Bright substrate is arranged between static backlight source and liquid crystal display panel.
Step 303: control static backlight source threw transparent substrate and provides dynamic light source for liquid crystal display panel, indicated liquid crystal surface
Plate shows final picture according to SOC picture signal and dynamic light source.
Wherein, this method is based on such as above-mentioned ELED dynamic backlight source control system.
Preferably, SOC picture signal is decoded as light and shade signal, including step A1-A2 in step 101:
Step A1, the rgb signal and/or grayscale signal in SOC picture signal are obtained；
Step A2, rgb value in rgb signal is less than to gray value in the signal and/or grayscale signal of default RGB threshold value to be less than in advance
If the signal of gray value is converted to dark signal.
A kind of ELED dynamic backlight source control system provided in an embodiment of the present invention and control method, by by SOC picture
Signal is converted to light and shade signal, and then can control static backlight source by the transparent substrate on optical treatment plate and be sent to liquid
Light in crystal panel, the optical treatment plate and static backlight source constitute dynamic backlight source, and liquid crystal display panel is according to the dynamic optical
Source and SOC picture signal restore the picture finally shown, to realize Dynamically Announce picture.Dynamic backlight source is in black picture
Black signal or local black signal can be provided under the lower or black picture in part to liquid crystal display panel LCD, prevent light from being radiated at liquid crystal surface
Plate lower surface will not generate leakage problem accordingly even when LCD locally has stress；Meanwhile it also being experienced in overall picture expression
Less than bad light-leaking.
The present invention can there are many various forms of specific embodiments, above by taking Fig. 1-Fig. 3 as an example in conjunction with attached drawing to this hair
Bright technical solution gives an example, this is not meant to that specific example applied by the present invention can only be confined to specifically flow
In journey or example structure, those skilled in the art are it is to be appreciated that specific embodiment presented above is more
Some examples in kind preferred usage, any embodiment for embodying the claims in the present invention should all be in technical solution of the present invention
Within the scope of claimed.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not limited to this hair
It is bright, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, according to
It is so possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equal
Replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of ELED dynamic backlight source control system characterized by comprising backlight signal processing circuit, optical treatment
Plate, backlight driver plate and Static planar backlight；The backlight processing circuit, will be described for obtaining SOC picture signal
SOC picture signal is decoded as light and shade signal and the light and shade signal is sent to the optical treatment plate；The optical treatment plate
Equipped with transparent substrate, the transparent substrate is equipped with the light valve circuit penetrated for controlling light, and the transparent substrate is arranged
Between the static backlight source and liquid crystal display panel；The optical treatment plate receives the light and shade signal, and according to the light and shade
The on off operating mode of light valve on transparent substrate described in signal real-time control；At the backlight driver plate and the backlight source signal
Reason circuit is connected with the Static planar backlight, is the backlight signal processing circuit and the Static planar backlight
Electric energy is provided；The Static planar backlight is used to provide dynamic light source through the transparent substrate for liquid crystal display panel.
2. system according to claim 1, which is characterized in that the light and shade signal includes clear signal and/or dark signal；
The light valve of optical treatment plate control clear signal corresponding position is logical state, control dark signal corresponding position
Light valve is disconnected state.
3. system according to claim 2, which is characterized in that the SOC picture signal includes rgb signal and/or grayscale
Signal；Rgb value in rgb signal is less than in the signal and/or grayscale signal of default RGB threshold value by the backlight processing circuit
The signal that gray value is less than default gray value is converted to dark signal.
4. system according to claim 1 to 3, which is characterized in that the backlight signal processing circuit includes filter
Wave circuit and/or signal conversion circuit；The filter circuit is for being filtered the SOC picture signal；The letter
Number conversion circuit is used to the SOC picture signal being converted to light and shade signal.
5. system according to claim 1 to 3, further includes: liquid crystal display panel；The liquid crystal display panel according to SOC for drawing
Face signal and dynamic light source show final picture.
6. system according to claim 5, which is characterized in that the liquid crystal display panel is TFT-LCD.
7. system according to claim 5, which is characterized in that the liquid crystal display panel integrates TCON；The TCON is used for will
Operating voltage needed for SOC picture signal is converted to liquid crystal display panel, working signal and/or clock signal.
8. system according to claim 1 to 3, which is characterized in that further include: SOC；
The SOC is connected with the backlight signal processing circuit and the TCON respectively, for the respectively described backlight letter
Number processing circuit and the TCON provide SOC picture signal.
9. a kind of ELED dynamic backlight operated control method characterized by comprising receive SOC picture signal, and by the SOC
Picture signal is decoded as light and shade signal；According on the transparent substrate of the light and shade signal real-time control optical treatment plate light valve it is logical
Disconnected state, the transparent substrate are arranged between static backlight source and liquid crystal display panel；Threw described transparent in control static backlight source
Substrate provides dynamic light source for liquid crystal display panel, and instruction liquid crystal display panel shows final picture according to SOC picture signal and dynamic light source
Face.
10. according to the method described in claim 9, it is characterized in that, described be decoded as light and shade letter for the SOC picture signal
Number, comprising: obtain the rgb signal and/or grayscale signal in the SOC picture signal；Rgb value in rgb signal is less than default
The signal that gray value is less than default gray value in the signal and/or grayscale signal of RGB threshold value is converted to dark signal.
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| CN201910124237.3A CN109712575A (en) | 2019-02-20 | 2019-02-20 | A kind of ELED dynamic backlight source control system and control method |
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| CN201910124237.3A CN109712575A (en) | 2019-02-20 | 2019-02-20 | A kind of ELED dynamic backlight source control system and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654910A (en) * | 2015-11-23 | 2016-06-08 | 乐视致新电子科技（天津）有限公司 | ELED dynamic backlight control system and control method thereof |
| CN109031783A (en) * | 2018-08-10 | 2018-12-18 | 昆山弘锦威电子有限公司 | Light import system, side entrance back module and liquid crystal display |
| CN109116624A (en) * | 2018-08-10 | 2019-01-01 | 昆山弘锦威电子有限公司 | Direct LED backlight mould group and liquid crystal display device |
| CN109143698A (en) * | 2018-08-10 | 2019-01-04 | 昆山弘锦威电子有限公司 | A kind of stn liquid crystal display screen |
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2019
- 2019-02-20 CN CN201910124237.3A patent/CN109712575A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654910A (en) * | 2015-11-23 | 2016-06-08 | 乐视致新电子科技（天津）有限公司 | ELED dynamic backlight control system and control method thereof |
| CN109031783A (en) * | 2018-08-10 | 2018-12-18 | 昆山弘锦威电子有限公司 | Light import system, side entrance back module and liquid crystal display |
| CN109116624A (en) * | 2018-08-10 | 2019-01-01 | 昆山弘锦威电子有限公司 | Direct LED backlight mould group and liquid crystal display device |
| CN109143698A (en) * | 2018-08-10 | 2019-01-04 | 昆山弘锦威电子有限公司 | A kind of stn liquid crystal display screen |
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Application publication date: 20190503 |