CN108231012A - A kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display - Google Patents
A kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display Download PDFInfo
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- CN108231012A CN108231012A CN201810048744.9A CN201810048744A CN108231012A CN 108231012 A CN108231012 A CN 108231012A CN 201810048744 A CN201810048744 A CN 201810048744A CN 108231012 A CN108231012 A CN 108231012A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The embodiment of the present invention provides a kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display, it is related to technical field of liquid crystal display, solves the problems, such as to make troubles to user's operation when extraneous ambient brightness changes since the backlight of panel screen is fixed in the prior art.The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and the backlight module for providing backlight to segment encode liquid crystal display panel, backlight module connection backlight drive circuit, backlight drive circuit are used to adjust the backlight illumination of backlight module according to the pwm signal of input, and this programme is：Obtain the intensity of illumination of segment encode liquid crystal display local environment；The duty ratio of the pwm signal of backlight drive circuit is input to according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment.This programme is applied in segment encode liquid crystal display.
Description
Technical field
The present invention relates to technical field of liquid crystal display more particularly to a kind of adjustings of the backlight illumination of segment encode liquid crystal display
Method and device.
Background technology
Upper, the panel of controller connection or remote control are used in the conventional home appliance such as air-conditioning, TV, refrigerator, washing machine
General all with screen display on device, the response of user key-press operation is shown by screen-refresh, and then realizes human-machine operation
Interaction, so as to complete the setting operation to electrical equipment.So the display panel with screen display be air-conditioning, TV, refrigerator,
The home appliances such as washing machine indispensable important control device in use.On some products than lower end, in order to drop
Low product cost, what is generally used is all the panel screen of segment encode liquid crystal display, using the panel screen of which, display screen
Content be it is fixed, can by " lighting " come carry out " display " or by " not lighting " come carry out " not showing " represent.
The cost of above-mentioned segment encode liquid crystal display is than less expensive, and control is also fairly simple, and the segment encode liquid crystal display
The backlight illumination of screen is typically fixed, and the brightness of this segment encode liquid crystal display is influenced to compare by the brightness of external environment
It is larger.Specifically, in extraneous ambient brightness than in the case of relatively low, the content of the segment encode liquid crystal display can compare " dazzling "；
In the case where extraneous ambient brightness is higher, the content which shows can become very " dim " again, in this way
So that it makes troubles to user's operation experience.
Invention content
The embodiment of the present invention provides a kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display, solves existing
Have what is made troubles in technology since the backlight of panel screen is fixed when extraneous ambient brightness changes to user's operation
Problem.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
The embodiment of the present invention in a first aspect, providing a kind of adjusting method of the backlight illumination of segment encode liquid crystal display, institute
Segment encode liquid crystal display is stated to include：Segment encode liquid crystal display panel and the back of the body for providing backlight to the segment encode liquid crystal display panel
Optical mode group, the backlight module connect backlight drive circuit, and the backlight drive circuit is used to be adjusted according to the pwm signal of input
The backlight illumination of the backlight module, the adjusting method include：
Obtain the intensity of illumination of the segment encode liquid crystal display local environment；
The backlight drive circuit is input to according to the adjusting of the intensity of illumination of the segment encode liquid crystal display local environment
The duty ratio of pwm signal.
The second aspect of the embodiment of the present invention provides a kind of regulating device of the backlight illumination of segment encode liquid crystal display, institute
Segment encode liquid crystal display is stated to include：Segment encode liquid crystal display panel and the back of the body for providing backlight to the segment encode liquid crystal display panel
Optical mode group, the backlight module connect backlight drive circuit, and the backlight drive circuit is used to be adjusted according to the pwm signal of input
The backlight illumination of the backlight module, the regulating device include：
Acquisition module, for obtaining the intensity of illumination of the segment encode liquid crystal display local environment；
Adjustment module, for being input to the back of the body according to the adjusting of the intensity of illumination of the segment encode liquid crystal display local environment
The duty ratio of the pwm signal of light drive circuit.
The third aspect of the embodiment of the present invention, provides a kind of control device of home appliance, and the control device includes：Section
Regulating device described in code liquid crystal display and second aspect, wherein：
The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and for being carried to the segment encode liquid crystal display panel
For the backlight module of backlight, the backlight module connects backlight drive circuit, and the backlight drive circuit is used for according to input
Pwm signal adjusts the backlight illumination of the backlight module.
The fourth aspect of the embodiment of the present invention, provides a kind of home appliance, and the home appliance is included described in the third aspect
Control device.
Compared with the prior art, the adjusting method of the backlight illumination of segment encode liquid crystal display provided in an embodiment of the present invention and
Device, the segment encode liquid crystal display include：Segment encode liquid crystal display panel and for also providing display panel to backlight to the segment encode
Backlight module, the backlight module connection backlight drive circuit, the backlight drive circuit be used for according to the pwm signal of input adjust
The backlight illumination of backlight module, by being input to according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment in this programme
The duty ratio of the pwm signal of backlight circuit so that the backlight illumination of segment encode liquid crystal display is bright with the light of local environment
It secretly changes, is brought convenience to the operation of user, so as to avoid the occurrence of in the prior art since backlight illumination is fixed always,
So that brought when ambient light is excessive lightness or darkness to user it is dazzling or uncomfortable, and the problem of user can not be operated.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structure diagram of segment encode liquid crystal display provided in an embodiment of the present invention；
Fig. 2 shows for a kind of flow of the adjusting method of the backlight illumination of segment encode liquid crystal display provided in an embodiment of the present invention
It is intended to；
Fig. 3 is the flow diagram of determining backlight illumination regulation coefficient provided in an embodiment of the present invention；
Fig. 4 is the flow of the adjusting method of the backlight illumination of another segment encode liquid crystal display provided in an embodiment of the present invention
Schematic diagram；
Fig. 5 is a kind of structural representation of the backlight illumination regulating device of segment encode liquid crystal display provided in an embodiment of the present invention
Figure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
For the ease of clearly describing the technical solution of the embodiment of the present invention, in an embodiment of the present invention, employ " the
One ", the printed words such as " second " distinguish function or the essentially identical identical entry of effect or similar item, and those skilled in the art can
To understand that the printed words such as " first ", " second " are not defined quantity and execution order.
The embodiment of the present invention provides a kind of adjusting method of the backlight illumination of segment encode liquid crystal display, the segment encode liquid crystal display
Device includes：Segment encode liquid crystal display panel and the backlight module for providing backlight to segment encode liquid crystal display panel, the backlight module
Backlight drive circuit is connected, which is used for according to the pulse width of input modulation (English：Pulse Width
Modulation, referred to as：PWM) the backlight illumination of Signal Regulation backlight module.
Here backlight drive circuit is referred to backlight drive circuit well known in the prior art, for specifically carrying on the back
The form of light drive circuit is here without limiting, as long as backlight drive can be realized, for backlight drive here
Concrete structure is also without being described in detail.
Illustratively, backlight module is generally using white light LEDs, and the light source which sends out is as segment encode liquid crystal display
The back light of panel.This programme realizes that the principle that backlight is adjusted is：By pwm signal come adjusting backlight luminance, the pwm signal
To adjust backlight be exactly the suspenopsia principle using human eye, and backlight module is controlled with the square wave of certain frequency and duty ratio
The conducting of (such as white light LEDs).LED forward currents are toggled in zero current between rated operational current, by opening at a high speed
Backlight is closed, the square wave of different duty is periodically provided, realizes the adjusting of brightness.As long as LED forward currents are big during conducting
It is small be it is constant, colour cast would not occur for the white light sent out, as long as and frequency 100Hz dry greatly, seen by person will be continuous
Light source.Assuming that high level, which represents, opens backlight, low level, which represents, closes backlight, and the ratio that backlight opens and closes the time is different
It can obtain the square wave of different duty.From the point of view of the waveform of output, the mean power of wave is different, has thus been obtained not
Same brightness, it is achieved thereby that the adjusting of backlight.
Illustratively, as shown in Figure 1, for a kind of structural representation of segment encode liquid crystal display provided in an embodiment of the present invention
Figure, the segment encode liquid crystal display include segment encode liquid crystal display panel 11 and backlight module 12, wherein, each segment encode LCD display
Plate is made of the liquid crystal molecule of two panels polarizer and the filling between the two panels polarizer, when between the two panels polarizer
When applying certain voltage, under the action of electric field, the orientation of crystal can twist, thus change its translucency, make
The light that is sent out by backlight module can penetrate segment encode liquid crystal display panel, in seeing and being shown on display panel
Hold, the liquid crystal molecule in the left side backlight that backlight module is sent out that twists penetrates display panel in Fig. 1, and Fig. 1
The liquid crystal molecule on middle right side does not twist so that the backlight that backlight module is sent out can not penetrate display panel.
Based on above-mentioned segment encode liquid crystal display shown in FIG. 1, as shown in Fig. 2, for one kind provided in an embodiment of the present invention
The flow diagram of the adjusting method of the backlight illumination of segment encode liquid crystal display, the adjusting method include：
101st, the intensity of illumination of segment encode liquid crystal display local environment is obtained.
Illustratively, above-mentioned step 101 specifically includes the following contents：
101a, acquisition for characterize segment encode liquid crystal display local environment intensity of illumination analog signal.
101b, digital signal is converted analog signals into.
Illustratively, the step of execution of the step of above-mentioned 101a can be light sensor with main body, above-mentioned 101b
Executive agent can be analog-digital converter (English：Analog-to-Digital Converter, referred to as：ADC).The light
Inductor acquisition is for characterizing the analog signal of the intensity of illumination of segment encode liquid crystal display local environment, and then ADC will be simulated and be believed
Number digital signal is converted into, wherein：The ADC can be integrated in light sensor, can also be integrated in the processor, can be with
It is individual hardware module.
Optionally, above-mentioned step 101 specifically includes the following contents：
101c, every time in the case where the time interval of setting reaches and segment encode liquid crystal display is in opening, obtain
Take the intensity of illumination of segment encode liquid crystal display local environment.
After 101d, the duty ratio of pwm signal for being input to backlight drive circuit in adjusting, restart timing, with true
It is fixed whether to reach time interval.
Illustratively, the time set in above-mentioned steps 101c can be completed by timer, specifically, can pass through
Timer is realized in a manner of timing or in the way of timing.
For example, the time interval set as T=3S, if being calculated in a manner of timing, is worked as setting time 3S and reached every time
When, and in the case that segment encode liquid crystal display is in opening, obtain the intensity of illumination of segment encode liquid crystal display local environment；
After the duty ratio of pwm signal for being input to backlight drive circuit is adjusted, restart timing, to determine whether to reach timing
Time interval.If being calculated in a manner of timing, every time when setting time 3S is reached, and segment encode liquid crystal display is in and opens
In the case of state, the intensity of illumination of segment encode liquid crystal display local environment is obtained；Backlight drive circuit is input to adjusting
After the duty ratio of pwm signal, restart timing, that is, reset timer so that timer timing since 0, to determine
Whether timed interval is reached.
102nd, the PWM that backlight drive circuit is input to according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment believes
Number duty ratio.
Wherein, above-mentioned pwm signal refers to square-wave signal, and the duty ratio of pwm signal refers to square wave high level time with week
The ratio of phase is duty ratio, such as the duty ratio of 1 second high level, 1 second low level pwm signal is 50%.
Illustratively, above-mentioned pwm signal can be generated by software or generated by hardware circuit
's.Preferably, it is generated software and pwm signal is generated by way of software timing may be used in pwm signal, which causes outer
It is simple to enclose circuit, pulse width precision is high, and controls flexible.
Illustratively, above-mentioned step 102 specifically includes the following contents：
102a, the corresponding backlight illumination regulation coefficient of intensity of illumination for obtaining segment encode liquid crystal display local environment.
Illustratively, above-mentioned step 102a specifically includes the following contents：
If the intensity of illumination of A1, segment encode liquid crystal display local environment is greater than or equal to first threshold, segment encode liquid crystal
The corresponding backlight illumination regulation coefficient of intensity of illumination for showing device local environment is the first setting value, and the first setting value is backlight illumination
Maximum value.
If the intensity of illumination of A2, segment encode liquid crystal display local environment is more than second threshold and less than first threshold, press
The corresponding backlight illumination regulation coefficient of the intensity of illumination of segment encode liquid crystal display local environment, adjustment function are determined according to adjustment function
Independent variable for intensity of illumination, dependent variable is the corresponding backlight illumination regulation coefficient of intensity of illumination, and independent variable with dependent variable just
It is related.
Illustratively, above-mentioned positive correlation includes direct proportion, specifically, the dependent variable is in certain proportion with independent variable
Growth and increase or reduced in certain proportion with the reduction of independent variable.
If the intensity of illumination of A3, segment encode liquid crystal display local environment is less than or equal to second threshold, it is being less than or is waiting
In each interval in the value range of second threshold, the corresponding back of the body of intensity of illumination of segment encode liquid crystal display local environment
Brightness regulation coefficient is the second setting value, and wherein value range includes at least one interval.
Illustratively, above-mentioned A3 specifically includes the following contents：
If the intensity of illumination of A4, segment encode liquid crystal display local environment is less than or equal to second threshold and more than third threshold
Value, then the corresponding backlight illumination regulation coefficient of the intensity of illumination of segment encode liquid crystal display local environment is the second setting value.
If the intensity of illumination of A5, segment encode liquid crystal display local environment is less than or equal to third threshold value and more than third threshold
Value, then the corresponding backlight illumination regulation coefficient of the intensity of illumination of segment encode liquid crystal display local environment is third setting value.
Wherein, the second above-mentioned setting value is more than third setting value.
Based on the content of above-mentioned A1-A5, as shown in figure 3, for determining backlight illumination adjustment provided in an embodiment of the present invention
The flow diagram of coefficient can obtain backlight illumination regulation coefficient, and the result of calculation is returned by the Fig. 3.
For example, a kind of computational algorithm of illustrative backlight illumination regulation coefficient is provided here.L represents that segment encode also will display
The intensity of illumination of device local environment, unit are：Lux, English abbreviation：LX.If L ＞=1000, backlight illumination regulation coefficient
It is 100%；If 100 ＜ L ＜ 1000, backlight illumination regulation coefficient is L/1000*100%；If 10 ＜ L ＜=100, backlight
Brightness adjustment coefficient is 10%；If L ＜=10, backlight illumination regulation coefficient is 5%.Wherein, it is corresponding when L is equal to 800LX
Backlight illumination regulation coefficient be 80%.
102b, the pwm signal with the first duty ratio is exported into backlight drive circuit, first duty ratio and backlight
Brightness adjustment coefficient is equal or difference is less than or equal to threshold value.
Compared with the prior art, the adjusting method of the backlight illumination of segment encode liquid crystal display provided in an embodiment of the present invention,
The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and the backlight for display panel also to be provided to backlight to the segment encode
Module, backlight module connection backlight drive circuit, the backlight drive circuit are used to adjust backlight mould according to the pwm signal of input
The backlight illumination of group, by being input to backlight electricity according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment in this programme
The duty ratio of the pwm signal on road so that the backlight illumination of segment encode liquid crystal display is sent out with the light and shade of the light of local environment
Changing is brought convenience to the operation of user, so as to avoid the occurrence of in the prior art since backlight illumination is fixed always so that ring
Brought when border light is excessive lightness or darkness to user it is dazzling or uncomfortable, and the problem of user can not be operated.
With reference to content described above, a specific example is given below.For example, the control panel of certain air-conditioning uses section
Code liquid crystal display carries out content and shows, the implementation method and step below as this programme carry out the adjust automatically of backlight illumination
Design.
As shown in figure 4, first, whether first step judgement timing reaches, the segment encode in the present embodiment on Air-Conditioning Control Panel
Liquid crystal display backlight illumination update in every two seconds when in dispaly state is primary.I.e. herein backlight illumination renewal time interval T
=2S is timed refreshing backlight illumination on the control panel of segment encode liquid crystal display using timer.In segment encode liquid crystal display
Judge whether timer has arrived prefixed time interval in the control program of device, if timer timing has been arrived, judge segment encode
Liquid crystal display is currently at dispaly state or closed state, and segment encode liquid crystal display institute is obtained if in dispaly state
Locate the intensity of illumination of environment；If the step of being closed, returning to initialization timer.Herein, timer has been judged
Through reaching 2S time intervals, while segment encode liquid crystal display is in and opens dispaly state, then carries out in next step.
Second step obtains the intensity of illumination of segment encode liquid crystal display local environment.Light sensor acquires to characterize light
According to the analog signal of intensity, analog signal is converted into digital signal by ADC, processor on the control panel of segment encode liquid crystal display
The illumination intensity value of the segment encode liquid crystal display local environment can be obtained.In the present embodiment, air-conditioning line control machine is because be mounted on
Windowsill is affected by daylight light, and is currently at the noon of fair weather, and light is stronger, the line traffic control detected
The intensity of illumination of device local environment is 1400LX.
Third walks, and calculates backlight illumination regulation coefficient.According to the environment illumination intensity obtained in second step, with reference to the present invention
The environment illumination intensity is converted to the regulation coefficient of backlight illumination by the algorithm that embodiment provides.For example, the ambient lighting obtained
Intensity is 1400LX, is 100% according to the backlight illumination regulation coefficient that the algorithm flow chart that Fig. 3 is provided is calculated.
4th step, the pwm signal of the corresponding duty ratio of generation backlight illumination coefficient, and the pwm signal is exported to backlight
In driving circuit.The pwm signal that duty ratio is 100% is exported to backlight drive circuit in the present embodiment, so as to update line traffic control
Backlight illumination in device.
By four above-mentioned steps, the adjust automatically of line control machine backlight illumination can be realized.
In the present embodiment, over time, to, light gradually weakens the time in the afternoon.In above-mentioned second step
In, the intensity of illumination for obtaining environment is 800LX, and the regulation coefficient of backlight illumination being calculated at this time by third step is
80%, then the duty ratio of output to the pwm signal of backlight drive circuit is 80% in the 4th step, can significantly be felt at this time
The backlight illumination of the display screen of line control machine reduces.
Further with the passage of time, arrive at dusk, light is fainter at this time, and intensity of illumination further reduces.
In above-mentioned second step, the light intensity for obtaining environment is 30LX, and the backlight illumination being calculated at this time by third step adjusts
Coefficient is 10%, then in the 4th step output to the pwm signal of backlight drive circuit duty ratio for 10%, at this time significantly can be with
Feel that the backlight illumination of the display screen of line control machine is lower, but show that content seems more comfortable in approximate dim environment,
Avoid backlight illumination it is excessively high when bring it is dazzling and uncomfortable.
Below by the correlation in the embodiment of the adjusting method of the backlight illumination based on the corresponding segment encode liquid crystal displays of Fig. 2
A kind of regulating device of the backlight illumination of segment encode liquid crystal display provided in an embodiment of the present invention is introduced in description.Following reality
The explanation for applying technical term relevant with above-described embodiment, concept etc. in example is referred to the above embodiments, no longer superfluous here
It states.
The embodiment of the present invention provides a kind of regulating device of the backlight illumination of segment encode liquid crystal display, the segment encode liquid crystal display
Device includes：Segment encode liquid crystal display panel and the backlight module for providing backlight to segment encode liquid crystal display panel, backlight module connect
Backlight drive circuit is connect, backlight drive circuit is used to adjust the backlight illumination of backlight module according to the pwm signal of input.
Illustratively, Fig. 1 gives a kind of structure diagram of segment encode liquid crystal display, which includes
Segment encode liquid crystal display panel 11 and backlight module 12, wherein, each segment encode liquid crystal display panel be by two panels polarizer and
The liquid crystal molecule composition of filling between the two panels polarizer, when applying certain voltage between the two panels polarizer, in electricity
Under the action of, the orientation of crystal can twist, thus change its translucency so that the luminous energy sent out by backlight module
Enough through segment encode liquid crystal display panel, so as to see the content shown on display panel, the liquid crystal molecule hair in left side in Fig. 1
The backlight that raw torsion enables backlight module to be sent out is through display panel, and the liquid crystal molecule on right side is not turned round in Fig. 1
Turn so that the backlight that backlight module is sent out can not penetrate display panel.
As shown in figure 5, for a kind of backlight illumination regulating device of segment encode liquid crystal display provided in an embodiment of the present invention
Structure diagram, the regulating device 2 include：Acquisition module 21 and adjustment module 22, wherein：
Acquisition module 21, for obtaining the intensity of illumination of segment encode liquid crystal display local environment.
Illustratively, above-mentioned acquisition module 21 includes light sensor and ADC, wherein：
Light sensor is believed for acquiring for characterizing the simulation of the intensity of illumination of segment encode liquid crystal display local environment
Number.
ADC, for converting analog signals into digital signal.
Wherein, above-mentioned ADC can be integrated in light sensor, can also be integrated in the processor, can also be single
Only hardware module.
Illustratively, above-mentioned light sensor is photo resistance or photodiode etc..
Optionally, above-mentioned acquisition module 21 is specifically used for：
Every time in the case where the time interval of setting reaches and segment encode liquid crystal display is in opening, section is obtained
The intensity of illumination of code liquid crystal display local environment.
After adjustment module 22 is used to implement the function for the duty ratio for adjusting the pwm signal for being input to backlight drive circuit,
Restart timing, to determine whether to reach time interval.
Adjustment module 22, for being input to backlight drive according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment
The duty ratio of the pwm signal of circuit.
Wherein, above-mentioned pwm signal refers to square-wave signal, and the duty ratio of pwm signal refers to square wave high level time with week
The ratio of phase is duty ratio, such as the duty ratio of 1 second high level, 1 second low level pwm signal is 50%.
Illustratively, above-mentioned adjustment module 22 includes：Coefficient acquiring unit and pwm signal output unit, wherein：
Coefficient acquiring unit, for obtaining the corresponding backlight illumination tune of the intensity of illumination of segment encode liquid crystal display local environment
Integral coefficient.
Pwm signal output unit, for having the pwm signal of the first duty ratio according to the generation of backlight illumination regulation coefficient,
And export pwm signal into the backlight drive circuit, wherein the first duty ratio is equal with backlight illumination regulation coefficient or phase
Difference is less than or equal to threshold value.
Illustratively, above-mentioned pwm signal output unit can be the functional unit or hardware circuit in software
Unit, and above-mentioned pwm signal can be generated by software or generated by hardware circuit.Preferably, lead to
It crosses software generation pwm signal and the mode of software timing may be used to generate pwm signal, which so that peripheral circuit is simple,
Pulse width precision is high, and controls flexible.
Illustratively, above-mentioned coefficient acquiring unit is specifically used for：
If the intensity of illumination of segment encode liquid crystal display local environment is greater than or equal to first threshold, segment encode liquid crystal display
The corresponding backlight illumination regulation coefficient of intensity of illumination of local environment be the first setting value, the first setting value for backlight illumination most
Big value.
If the intensity of illumination of segment encode liquid crystal display local environment is more than second threshold and less than first threshold, according to tune
Section function determines the corresponding backlight illumination regulation coefficient of the intensity of illumination of segment encode liquid crystal display local environment, adjustment function from
Variable is intensity of illumination, and dependent variable is the corresponding backlight illumination regulation coefficient of intensity of illumination, and independent variable and dependent variable positive correlation.
Illustratively, above-mentioned positive correlation includes direct proportion, specifically, the dependent variable is in certain proportion with independent variable
Growth and increase or reduced in certain proportion with the reduction of independent variable.
If the intensity of illumination of segment encode liquid crystal display local environment is less than or equal to second threshold, less than or equal to the
Each interval in the value range of two threshold values, the corresponding backlight of intensity of illumination of segment encode liquid crystal display local environment are bright
Degree regulation coefficient is the second setting value, and wherein value range includes at least one interval.
Illustratively, for above-mentioned coefficient acquiring unit in the illumination specifically for segment encode liquid crystal display local environment
When intensity is less than or equal to second threshold, the following contents is specifically included：
If the intensity of illumination of segment encode liquid crystal display local environment is less than or equal to second threshold and is more than third threshold value,
The corresponding backlight illumination regulation coefficient of intensity of illumination of segment encode liquid crystal display local environment is the second setting value.
If the intensity of illumination of segment encode liquid crystal display local environment is less than or equal to third threshold value and is more than third threshold value,
The corresponding backlight illumination regulation coefficient of intensity of illumination of segment encode liquid crystal display local environment is third setting value.
Wherein, the second above-mentioned setting value is more than third setting value.
For example, a kind of computational algorithm of illustrative backlight illumination regulation coefficient is provided here.L represents that segment encode also will display
The intensity of illumination of device local environment, unit are：Lux, English abbreviation：LX.If L ＞=1000, backlight illumination regulation coefficient
It is 100%；If 100 ＜ L ＜ 1000, backlight illumination regulation coefficient is L/1000*100%；If 10 ＜ L ＜=100, backlight
Brightness adjustment coefficient is 10%；If L ＜=10, backlight illumination regulation coefficient is 5%.Wherein, it is corresponding when L is equal to 800LX
Backlight illumination regulation coefficient be 80%.
Compared with the prior art, the regulating device of the backlight illumination of segment encode liquid crystal display provided in an embodiment of the present invention,
The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and the backlight for display panel also to be provided to backlight to the segment encode
Module, backlight module connection backlight drive circuit, the backlight drive circuit are used to adjust backlight mould according to the pwm signal of input
The backlight illumination of group, by being input to backlight electricity according to the adjusting of the intensity of illumination of segment encode liquid crystal display local environment in this programme
The duty ratio of the pwm signal on road so that the backlight illumination of segment encode liquid crystal display is sent out with the light and shade of the light of local environment
Changing is brought convenience to the operation of user, so as to avoid the occurrence of in the prior art since backlight illumination is fixed always so that ring
Brought when border light is excessive lightness or darkness to user it is dazzling or uncomfortable, and the problem of user can not be operated.
The embodiment of the present invention provides a kind of control device of home appliance, which includes：Segment encode liquid crystal display
And regulating device described above, wherein：
The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and for segment encode liquid crystal display panel provide backlight
Backlight module, backlight module connection backlight drive circuit, the backlight drive circuit be used for according to the pwm signal of input adjust carry on the back
The backlight illumination of optical mode group.
Illustratively, the structure diagram of a kind of segment encode liquid crystal display that Fig. 1 is provided, the concrete meaning in the Fig. 1 can
With with reference to the described content of regulating device above or adjusting method part, which is not described herein again.
Illustratively, the control device of above-mentioned home appliance can be remote controler, line control machine, on home appliance
Operation panel etc..
The embodiment of the present invention provides a kind of home appliance, which includes control device described above.
The control device or home appliance of home appliance provided in an embodiment of the present invention, the segment encode liquid crystal in the home appliance
The backlight illumination of display can change with the light and shade of the light of local environment, be brought convenience to the operation of user,
So as to avoid the occurrence of the segment encode liquid crystal display in home appliance of the prior art since its backlight illumination is fixed always so that
Brought when ambient light is excessive lightness or darkness to user it is dazzling or uncomfortable, and the problem of user can not be operated.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, it, can as needed will be upper only with the division progress of above-mentioned each function module for example, in practical application
It states function distribution to be completed by different function modules, i.e., the internal structure of device is divided into different function modules, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before can referring to
The corresponding process in embodiment of the method is stated, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed regulating device, it can be by other
Mode realize.For example, the embodiment of regulating device described above is only schematical, for example, the module or list
The division of member, only a kind of division of logic function can have an other dividing mode in actual implementation, for example, multiple units or
Component may be combined or can be integrated into another system or some features can be ignored or does not perform.Another point is shown
Show or the mutual coupling, direct-coupling or communication connection that discusses can be by some interfaces, between device or unit
Coupling or communication connection are connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That each unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent product sale or uses
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) perform the present invention
The all or part of step of embodiment the method.And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. the various media that can store program code.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
- A kind of 1. adjusting method of the backlight illumination of segment encode liquid crystal display, which is characterized in that the segment encode liquid crystal display packet It includes；Segment encode liquid crystal display panel and the backlight module for providing backlight to the segment encode liquid crystal display panel, the backlight mould Group connection backlight drive circuit, the backlight drive circuit are used to adjust the back of the body of the backlight module according to the pwm signal of input Brightness, the adjusting method include；Obtain the intensity of illumination of the segment encode liquid crystal display local environment；The PWM that the backlight drive circuit is input to according to the adjusting of the intensity of illumination of the segment encode liquid crystal display local environment believes Number duty ratio.
- 2. adjusting method according to claim 1, which is characterized in that described to obtain ring residing for the segment encode liquid crystal display The intensity of illumination in border, including；Every time in the case where the time interval of setting reaches and the segment encode liquid crystal display is in opening, institute is obtained State the intensity of illumination of segment encode liquid crystal display local environment；After the duty ratio of pwm signal for adjusting and being input to the backlight drive circuit, restart timing, to determine Whether the time interval is reached.
- 3. adjusting method according to claim 1, which is characterized in that the ring according to residing for the segment encode liquid crystal display The intensity of illumination adjusting in border is input to the duty ratio of the pwm signal of the backlight drive circuit, including：Obtain the corresponding backlight illumination regulation coefficient of intensity of illumination of the segment encode liquid crystal display local environment；Pwm signal with the first duty ratio is exported into the backlight drive circuit, first duty ratio and the back of the body Brightness regulation coefficient is equal or difference is less than or equal to threshold value.
- 4. adjusting method according to claim 3, which is characterized in that described to obtain ring residing for the segment encode liquid crystal display The corresponding backlight illumination regulation coefficient of intensity of illumination in border includes：If the intensity of illumination of the segment encode liquid crystal display local environment is greater than or equal to first threshold, the segment encode liquid crystal The corresponding backlight illumination regulation coefficient of intensity of illumination for showing device local environment is the first setting value, and first setting value is backlight The maximum value of brightness；If the intensity of illumination of the segment encode liquid crystal display local environment is more than second threshold and less than the first threshold, press The corresponding backlight illumination regulation coefficient of the intensity of illumination of the segment encode liquid crystal display local environment is determined according to adjustment function, it is described The independent variable of adjustment function is intensity of illumination, and dependent variable is the corresponding backlight illumination regulation coefficient of the intensity of illumination, and is become certainly Amount and dependent variable positive correlation；If the intensity of illumination of the segment encode liquid crystal display local environment is less than or equal to the second threshold, it is being less than or is waiting In each interval in the value range of the second threshold, the intensity of illumination of the segment encode liquid crystal display local environment Corresponding backlight illumination regulation coefficient is the second setting value, wherein the value range includes at least one interval.
- 5. adjusting method according to claim 1, which is characterized in that described to obtain ring residing for the segment encode liquid crystal display The intensity of illumination in border, including；Acquire for characterize the segment encode liquid crystal display local environment intensity of illumination analog signal；Convert analog signals into digital signal.
- A kind of 6. regulating device of the backlight illumination of segment encode liquid crystal display, which is characterized in that the segment encode liquid crystal display packet It includes：Segment encode liquid crystal display panel and the backlight module for providing backlight to the segment encode liquid crystal display panel, the backlight mould Group connection backlight drive circuit, the backlight drive circuit are used to adjust the back of the body of the backlight module according to the pwm signal of input Brightness, the regulating device include：Acquisition module, for obtaining the intensity of illumination of the segment encode liquid crystal display local environment；Adjustment module is driven for being input to the backlight according to the adjusting of the intensity of illumination of the segment encode liquid crystal display local environment The duty ratio of the pwm signal of dynamic circuit.
- 7. regulating device according to claim 6, which is characterized in that the acquisition module includes：Light sensor is believed for acquiring for characterizing the simulation of the intensity of illumination of the segment encode liquid crystal display local environment Number；ADC analog-digital converters, for converting analog signals into digital signal.
- 8. regulating device according to claim 6, which is characterized in that the adjustment module includes：Coefficient acquiring unit, for obtaining the corresponding backlight illumination tune of the intensity of illumination of the segment encode liquid crystal display local environment Integral coefficient；Pwm signal output unit, for having the pwm signal of the first duty ratio according to backlight illumination regulation coefficient generation, And export the pwm signal into the backlight drive circuit, wherein first duty ratio is adjusted with the backlight illumination Coefficient is equal or difference is less than or equal to threshold value.
- 9. a kind of control device of home appliance, which is characterized in that the control device includes：Segment encode liquid crystal display and power Profit requires 6) 8 any one of them regulating device, wherein：The segment encode liquid crystal display includes：Segment encode liquid crystal display panel and for the segment encode liquid crystal display panel provide the back of the body The backlight module of light, the backlight module connect backlight drive circuit, and the backlight drive circuit is used to be believed according to the PWM of input Number adjust the backlight illumination of the backlight module.
- 10. a kind of home appliance, which is characterized in that the home appliance includes the control device described in claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810048744.9A CN108231012A (en) | 2018-01-18 | 2018-01-18 | A kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810048744.9A CN108231012A (en) | 2018-01-18 | 2018-01-18 | A kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display |
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| CN201810048744.9A Pending CN108231012A (en) | 2018-01-18 | 2018-01-18 | A kind of adjusting method and device of the backlight illumination of segment encode liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534055A (en) * | 2019-08-29 | 2019-12-03 | 广东美的制冷设备有限公司 | Display panel of air-conditioner and air conditioner |
| CN113689827A (en) * | 2021-08-30 | 2021-11-23 | 四川虹美智能科技有限公司 | Air conditioner wire controller |
| CN113851088A (en) * | 2021-08-18 | 2021-12-28 | 惠州市德赛西威汽车电子股份有限公司 | Automobile instrument self-adaptive backlight control system and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364384A (en) * | 2007-08-06 | 2009-02-11 | 深圳Tcl工业研究院有限公司 | Method and apparatus for liquid crystal image processing |
| CN101650921A (en) * | 2009-09-17 | 2010-02-17 | 青岛海信电器股份有限公司 | Method and device of controlling dynamic backlight |
| CN101889304A (en) * | 2007-12-13 | 2010-11-17 | 苹果公司 | Display device control based on integrated ambient light detection and lighting source characteristics |
| CN201904071U (en) * | 2010-09-02 | 2011-07-20 | 苏州冠捷科技有限公司 | Separated display apparatus brightness adjusting device based on environmental light |
| US20130002737A1 (en) * | 2009-04-16 | 2013-01-03 | Chunghwa Picture Tubes, Ltd. | Driving circuit and gray insertion method of liquid crystal display |
| CN202871260U (en) * | 2012-08-30 | 2013-04-10 | 飞亚达（集团）股份有限公司 | Backlight adjustment circuit |
| CN203857559U (en) * | 2014-04-08 | 2014-10-01 | 美的集团股份有限公司 | Air conditioner capable of displaying changeable figure |
| CN204460602U (en) * | 2015-02-11 | 2015-07-08 | 松下电器研究开发(苏州)有限公司 | Air-conditioning remote control |
| CN205957394U (en) * | 2016-07-11 | 2017-02-15 | 合肥美的暖通设备有限公司 | Drive -by -wire ware and air conditioner |
| CN106461258A (en) * | 2014-06-09 | 2017-02-22 | 大金工业株式会社 | Remote control device |
-
2018
- 2018-01-18 CN CN201810048744.9A patent/CN108231012A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101364384A (en) * | 2007-08-06 | 2009-02-11 | 深圳Tcl工业研究院有限公司 | Method and apparatus for liquid crystal image processing |
| CN101889304A (en) * | 2007-12-13 | 2010-11-17 | 苹果公司 | Display device control based on integrated ambient light detection and lighting source characteristics |
| US20130002737A1 (en) * | 2009-04-16 | 2013-01-03 | Chunghwa Picture Tubes, Ltd. | Driving circuit and gray insertion method of liquid crystal display |
| CN101650921A (en) * | 2009-09-17 | 2010-02-17 | 青岛海信电器股份有限公司 | Method and device of controlling dynamic backlight |
| CN201904071U (en) * | 2010-09-02 | 2011-07-20 | 苏州冠捷科技有限公司 | Separated display apparatus brightness adjusting device based on environmental light |
| CN202871260U (en) * | 2012-08-30 | 2013-04-10 | 飞亚达（集团）股份有限公司 | Backlight adjustment circuit |
| CN203857559U (en) * | 2014-04-08 | 2014-10-01 | 美的集团股份有限公司 | Air conditioner capable of displaying changeable figure |
| CN106461258A (en) * | 2014-06-09 | 2017-02-22 | 大金工业株式会社 | Remote control device |
| CN204460602U (en) * | 2015-02-11 | 2015-07-08 | 松下电器研究开发(苏州)有限公司 | Air-conditioning remote control |
| CN205957394U (en) * | 2016-07-11 | 2017-02-15 | 合肥美的暖通设备有限公司 | Drive -by -wire ware and air conditioner |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534055A (en) * | 2019-08-29 | 2019-12-03 | 广东美的制冷设备有限公司 | Display panel of air-conditioner and air conditioner |
| CN110534055B (en) * | 2019-08-29 | 2021-09-14 | 广东美的制冷设备有限公司 | Air conditioner display panel and air conditioner |
| CN113851088A (en) * | 2021-08-18 | 2021-12-28 | 惠州市德赛西威汽车电子股份有限公司 | Automobile instrument self-adaptive backlight control system and method |
| CN113689827A (en) * | 2021-08-30 | 2021-11-23 | 四川虹美智能科技有限公司 | Air conditioner wire controller |
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Application publication date: 20180629 |