CN107342058A - Liquid crystal display die set brightness adjusting method, test board, system and equipment - Google Patents
Liquid crystal display die set brightness adjusting method, test board, system and equipment Download PDFInfo
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- CN107342058A CN107342058A CN201710763562.5A CN201710763562A CN107342058A CN 107342058 A CN107342058 A CN 107342058A CN 201710763562 A CN201710763562 A CN 201710763562A CN 107342058 A CN107342058 A CN 107342058A
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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
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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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a kind of liquid crystal display die set brightness adjusting method, device, system and equipment, this method includes：Driving IC to liquid crystal display die set sends default PWM control datas；The original intensity of liquid crystal display die set is obtained, original intensity is the original intensity of driving IC liquid crystal display die sets according to corresponding to the default pwm signal that default PWM control datas generate；Judge original intensity whether in predetermined luminance range；If it is not, presetting PWM control datas according to default regulation rule adjustment to adjust default pwm signal, liquid crystal display die set is set to be located at based on the present intensity that current PWM control datas and present PWM signal are shown in predetermined luminance range；Current PWM control datas are burned onto in driving IC.The embodiment of the present invention realizes and the luminance difference between liquid crystal display die set is limited in less predetermined luminance range by the way that the visible luminance difference of human eye vision to be converted to the change of sightless back facet current.
Description
Technical field
The present embodiments relate to lcd technology, more particularly to a kind of liquid crystal display die set brightness adjusting method, survey
Test plate (panel), system and equipment.
Background technology
As liquid crystal display product is in the extensive application of every field and the innovation of Display Technique, people produce to liquid crystal display
The coherence request more and more higher of the display brightness of product, but due to liquid crystal display die set used by making material, manufacture craft
With the difference of production batch, even causing same model, there is also human eye to divide for the brightness between different liquid crystal display products
The vision difference distinguished.
Prior art, will be bright from meeting beyond the liquid crystal display die set of brightness management and control scope by setting brightness management and control scope
Spend in the liquid crystal display die set of management and control scope and reject and do over again, still, based on the consideration for reducing rework cost, brightness management and control scope
A wider scope would generally be arranged to, therefore, prior art can only be reduced between liquid crystal display die set to a certain extent
Luminance difference, the discriminable vision difference of human eye often still be present between liquid crystal display die set.
The content of the invention
The invention provides a kind of liquid crystal display die set brightness adjusting method, test board, system and equipment, to realize unification
Display brightness between liquid crystal display die set, eliminate the existing discriminable vision difference of human eye between liquid crystal display die set.
In a first aspect, the embodiments of the invention provide a kind of liquid crystal display die set brightness adjusting method, for being surveyed by brightness
The test board in the liquid crystal display die set brightness control system formed with test board is put in trial assembly, and this method includes：
Driving IC to liquid crystal display die set sends default PWM control datas；
The original intensity of the liquid crystal display die set is obtained, the original intensity is the driving IC according to described default
The original intensity of the liquid crystal display die set corresponding to the default pwm signal of PWM control datas generation；
Judge the original intensity whether in predetermined luminance range；
If it is not, presetting PWM control datas according to described in default regulation rule adjustment to adjust the default pwm signal, obtain
To current PWM control datas and present PWM signal, the liquid crystal display die set is set to be based on current PWM control datas and current PWM
The present intensity that signal is shown is located in the predetermined luminance range；
The current PWM control datas are burned onto in the driving IC.
Further, the original intensity step for obtaining the liquid crystal display die set includes：
The original intensity shown by the luminance detection device acquisition liquid crystal display die set, the original intensity are
The back facet current that the backlight circuit of the liquid crystal display die set exports according to the default pwm signal, lights the liquid crystal display
Module and the brightness shown.
Further, it is described to preset PWM control datas according to described in default regulation rule adjustment to adjust the default PWM
Signal, obtain current PWM control datas and present PWM signal, make the liquid crystal display die set be based on current PWM control datas and
The step that the present intensity that present PWM signal is shown is located in the predetermined luminance range includes：
When minimum brightness of the original intensity less than the predetermined luminance range or higher than the predetermined luminance range
High-high brightness when；
According to predetermined interval, the default PWM control datas are adjusted to incrementally increase or reduce the duty of the pwm signal
Than obtaining current PWM control datas and present PWM signal, the liquid crystal display die set is based on the current PWM control datas
It is located at the present intensity that the present PWM signal is shown in the predetermined luminance range.
Further, also include before the step of driving IC to liquid crystal display die set sends default PWM control datas：
Set the predetermined luminance value scope and back facet current output gear of liquid crystal display die set.
Further, after the predetermined luminance value scope of the setting liquid crystal display die set and back facet current export gear,
Also include：
According to default integer transformation rule, the corresponding relation of PWM control datas and pwm signal is established.
Further, it is described to judge the original intensity whether after predetermined luminance range is interior, in addition to：
If so, then the default PWM control datas are burned onto in the driving IC.
Second aspect, the embodiment of the present invention additionally provide a kind of liquid crystal display die set brightness regulation test board, including：
PWM control data sending modules, default PWM control datas are sent for the driving IC to liquid crystal display die set；
Original intensity acquisition module, for obtaining the original intensity of the liquid crystal display die set, the original intensity is institute
State driving IC according to corresponding to the default pwm signal that the default PWM control datas generate the liquid crystal display die set it is initial
Brightness；
Judge module, for judging the original intensity whether in predetermined luminance range；
Adjustment module, for if it is not, then described to adjust according to PWM control datas are preset described in default regulation rule adjustment
Default pwm signal, obtains current PWM control datas and present PWM signal, the liquid crystal display die set is controlled based on current PWM
The present intensity that data processed and present PWM signal are shown is located in the predetermined luminance range；
First burning module, for the current PWM control datas to be burned onto in the driving IC.
The third aspect, the embodiment of the present invention additionally provide a kind of liquid crystal display die set brightness control system, and the system includes
Liquid crystal display die set brightness regulation test board described in luminance detection device and second aspect；
Wherein, the liquid crystal display die set brightness regulation test board obtains the liquid crystal by the luminance detection device
Show the original intensity of module and the present intensity.
Fourth aspect, the embodiment of the present invention additionally provide a kind of liquid crystal display die set brightness regulation equipment, including memory,
Processor and storage on a memory and the computer program that can run on a processor, during the computing device described program
Realize the liquid crystal display die set brightness adjusting method described in first aspect.
5th aspect, the embodiment of the present invention additionally provide a kind of computer-readable recording medium, are stored thereon with computer
Program, liquid crystal display die set brightness adjusting method as described in relation to the first aspect is realized when the program is executed by processor.
A kind of liquid crystal display die set brightness adjusting method, test board, system and equipment provided in an embodiment of the present invention, pass through
Take and shift to an earlier date the technology hand that burning enters suitable PWM control datas in the driving IC of the liquid crystal display die set of different luminescent properties
Section so that the liquid crystal display die set of different luminescent properties reads the PWM controls being burned onto in advance in its driving IC in normal work
Data processed so that liquid crystal display die set can be directly displayed based on the pwm signal that driving IC generates according to the PWM control datas
It is corresponding with the PWM control datas, the brightness in predetermined luminance range, realize the liquid crystal display for making different luminescent properties
Luminance difference between module is limited to the technique effect in less predetermined luminance range, is significantly reducing liquid crystal display
While module is rejected with rework cost, reach the display brightness between unified liquid crystal display die set, eliminate liquid crystal display die set
Between the existing discriminable vision difference of human eye, bring more comfortable visual effect to experience to user.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the liquid crystal display die set brightness adjusting method described in the embodiment of the present invention one；
Fig. 2 is the preferred flow schematic diagram of the liquid crystal display die set brightness adjusting method described in the embodiment of the present invention two；
Fig. 3 is the structural representation of the liquid crystal display die set brightness regulation test board described in the embodiment of the present invention three；
Fig. 4 is the structural representation of the liquid crystal display die set brightness control system described in the embodiment of the present invention four；
Fig. 5 is the structural representation of the liquid crystal display die set brightness regulation equipment described in the embodiment of the present invention five.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, hereinafter with reference to attached in the embodiment of the present invention
Figure, technical scheme is clearly and completely described by embodiment, it is clear that described embodiment is the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out under the premise of creative work the every other embodiment obtained, belong to the scope of protection of the invention.
Prior art is by setting the brightness management and control scope of wider liquid crystal display die set, by beyond brightness management and control scope
Liquid crystal display product is rejected and done over again, and the discriminable vision difference of human eye between liquid crystal display product often still be present.It is based on
This, the embodiments of the invention provide a kind of liquid crystal display die set brightness adjusting method, device, system and equipment, above-mentioned liquid crystal are bright
Degree adjusting method is converted to the visible luminance difference of human eye vision the change of sightless back facet current, can be by liquid crystal display
Luminance difference between module is limited in less predetermined luminance range.It is first for ease of understanding the embodiment of the present invention
First a kind of liquid crystal display die set brightness adjusting method disclosed in the embodiment of the present invention is described in detail.
Embodiment one
The embodiments of the invention provide a kind of liquid crystal display die set brightness adjusting method, brightness regulation shown in Figure 1
Method flow diagram, for the brightness between unified different liquid crystal display die sets, the visual experience of user is improved, this method is by brightness
Test board in the liquid crystal display die set brightness control system that test device and test board are formed performs, and comprises the following steps：
S101. the driving IC to liquid crystal display die set sends default PWM control datas.
Driving IC (Integrated Circuit, integrated circuit) to liquid crystal display die set sends default PWM (Pulse
Width Modulation, pulse width modulation) control data.Wherein, the control mode of PWM general principles is exactly to inversion electricity
The break-make of way switch device is controlled, and output end is obtained a series of equal pulse of amplitudes, with these pulses come instead of just
String ripple or required waveform.Multiple pulses are namely produced in the half period of output waveform, make the equivalence electricity of each pulse
Press as sinusoidal waveform, the output smoothing and low-order harmonic obtained is few.The width of each pulse is modulated by certain rule,
The size of inverter circuit output voltage can be changed, can also change output frequency.Can also be by a series of width to pulses
Degree is modulated, equally to obtain required waveform (containing shape and amplitude).
Test board in the embodiment of the present invention is preferably ARM test boards, its communications protocol between liquid crystal display die set
Can be MIPI-DSI, MIPI-DBI or MIPI-DPI, or it is other, specifically can be according to the tool of used liquid crystal display die set
Build number is adjusted.
ARM (Advanced RISC Machines, Advanced Reduced Instruction Set processor) test board is liquid crystal display die set
Power supply, and configuration driven IC, liquid crystal display die set is set to show pure white picture, then the driving IC to liquid crystal display die set is sent
Default PWM control datas, driving IC generate default pwm signal according to PWM control datas.PWM control datas in the present embodiment
It is the control information for adjusting pwm signal, is specifically as follows the dutycycle of regulation pwm signal, so as to controls liquid crystal by pwm signal
The back facet current of display module and control the brightness of liquid crystal display die set.
It should be noted that the power supply timing that ARM test boards are powered to liquid crystal display die set, and configuration driven IC side
Formula, corresponding prior art can be selected according to the model of the liquid crystal display die set adjusted, the embodiment of the present invention is to this
Not limit.
S102. the original intensity of liquid crystal display die set is obtained, original intensity is given birth to for driving IC according to default PWM control datas
Into default pwm signal corresponding to liquid crystal display die set original intensity.
After driving IC to be based on the default default pwm signal of PWM control datas generation, backlight circuit is given birth to according to default pwm signal
Liquid crystal display die set is lighted into back facet current, the brightness of liquid crystal display die set now is original intensity；Pass through luminance detection device
The original intensity of liquid crystal display die set is obtained, establishes default corresponding relation between pwm signal and original intensity.
Luminance detection device in the embodiment of the present invention uses optical detecting instrument of the prior art, such as, CA-
310 or BM-7, simple to operate, as a result accuracy is higher.
S103. original intensity is judged whether in predetermined luminance range, if it is not, then order performs S104 and S105；If
It is then preferably to be carried out S106.
S104. PWM control datas are preset to adjust default pwm signal according to default regulation rule adjustment, obtains current PWM
Control data and present PWM signal, liquid crystal display die set is set to work as based on what current PWM control datas and present PWM signal were shown
Preceding brightness is located in predetermined luminance range.
If original intensity exceeds predetermined luminance range, by adjusting the default default pwm signal of PWM control datas regulation
Dutycycle, until the brightness of liquid crystal display die set is located in predetermined luminance range, regulative mode includes：
When original intensity is less than the minimum value of predetermined luminance range；According to predetermined interval, default PWM control datas are adjusted
To incrementally increase the dutycycle of pwm signal, current PWM control datas and present PWM signal are obtained, is based on liquid crystal display die set
The present intensity that current PWM control datas and present PWM signal are shown is located in predetermined luminance range.
When original intensity is higher than the high-high brightness of predetermined luminance range；According to predetermined interval, default PWM controls number is adjusted
Progressively reduce the dutycycle of pwm signal according to this, obtain current PWM control datas and present PWM signal, make liquid crystal display die set base
It is located in the present intensity that current PWM control datas and present PWM signal are shown in predetermined luminance range.
Predetermined luminance range in the present embodiment can be set according to liquid crystal property and actual use scene, for rear
Person, it may be considered that can the content that liquid crystal display die set is shown reduce identification of the human eye for brightness, if so, can then select
The predetermined luminance range of wider range, if it is not, then needing to select narrower predetermined luminance range.
S105. current PWM control datas are burned onto in driving IC.
Current PWM control datas corresponding to present intensity that this is located in predetermined luminance range are burned onto in driving IC
When, default integer transformation rule is first according to, the dutycycle of present PWM signal is converted into integer numerical value；Then by integer number
Current PWM control datas corresponding to value are burned onto in driving IC, by the way that current PWM control datas are burnt into driving IC, so that
When liquid crystal display die set is again started up, control mainboard can be by reading the current PWM control datas stored, and output is with deserving
Back facet current corresponding to preceding PWM control datas lights liquid crystal display die set, makes the brightness of liquid crystal display die set be still located on presetting
In brightness range, even if liquid crystal display die set has the display brightness of the stabilization in preset threshold range.
S106. default PWM control datas are burned onto in driving IC.
If original intensity is located in predetermined luminance range, default pair between PWM control datas and original intensity is kept
It should be related to, directly default PWM control datas are burned onto in driving IC.
A kind of liquid crystal display die set brightness adjusting method provided in an embodiment of the present invention, by taking in different luminescent properties
Liquid crystal display die set driving IC in burning in advance enter the technological means of suitable PWM control datas so that different luminescent properties
Liquid crystal display die set in normal work, read be burned onto in advance its drive IC in PWM control datas so that liquid crystal display
Module can be directly displayed corresponding with the PWM control datas based on the pwm signal that driving IC generates according to the PWM control datas
, the brightness in predetermined luminance range, realize the luminance difference between the liquid crystal display die set for making different luminescent properties
The technique effect being limited in less predetermined luminance range, significantly reducing liquid crystal display die set rejecting and rework cost
While, reach the display brightness between unified liquid crystal display die set, existing human eye can be distinguished between eliminating liquid crystal display die set
Vision difference, bring more comfortable visual effect to experience to user.
Embodiment two
The embodiments of the invention provide a kind of liquid crystal display die set brightness adjusting method, for by luminance test device and survey
Test board in the liquid crystal display die set brightness control system that test plate (panel) is formed, is optimized based on embodiment one, referring to
The preferred flow charts of brightness adjusting method shown in Fig. 2, comprise the following steps：
S200. the predetermined luminance range and back facet current output gear of liquid crystal display die set are set.
Predetermined luminance range can be set according to liquid crystal property and actual use scene, for the latter, it may be considered that
Can the content that liquid crystal display die set is shown reduce identification of the human eye for brightness, if so, then can be wider with range of choice
Predetermined luminance range, if it is not, then needing to select narrower predetermined luminance range.
According to the brightness specifications and current specification of liquid crystal display die set, liquid can be set in runs software in ARM test boards
The predetermined luminance range of brilliant display module and the output gear of back facet current.
For example brightness specifications of the liquid crystal display die set when back facet current is A mA include L min=B (minimum luminance values
For B) and L max=D (highest brightness value), wherein B, D unit is brill cd/m2.
Under normal circumstances, liquid crystal display die set using brightness between minimum luminance value and maximum brightness value, therefore
The predetermined luminance range E of liquid crystal display die set is set in ARM runs softwares：B≦E≦D.Back facet current gear corresponding to setting as
I max=A/P mA, wherein P are the dutycycle of default pwm signal, and the driving IC registers of liquid crystal display die set are 8Bit, are driven
Dynamic IC registers maximum is 255, and minimum value 0, then PWM control datas corresponding to the dutycycle of default pwm signal are M=
255 × P, wherein, PWM control datas M scope is [0,255].
S201. according to default integer transformation rule, the corresponding relation of PWM control datas and pwm signal is established.
The duty cycle relationship of PWM control datas and pwm signal is in the present embodiment：Set the dutycycle P of pwm signal as
When 100%, PWM control datas M is 255, then when pwm signal dutycycle P is 50%, P × 255=127.5, by 127.5
Integer 127 is converted into, then PWM control datas M is 127, i.e., when PWM control datas are 127, it is 50% to control and produce dutycycle
Pwm signal, by adjusting the numerical value of PWM control datas, pwm signal dutycycle can be adjusted.In the embodiment of the present invention, PWM letters
Number adjustable range back facet current should be made to be no more than its rated current.
S202. the driving IC to liquid crystal display die set sends default PWM control datas.
Test board in the embodiment of the present invention is preferably ARM test boards, its communications protocol between liquid crystal display die set
Can be MIPI-DSI, MIPI-DBI or MIPI-DPI, or it is other, it can specifically be carried out according to used liquid crystal display die set
Adjustment, and ARM plates preferably using LPC2214 as master chip, AMS1117 1.8S/2.8S/3.3S are as Power convert core
Piece
It is electric on ARM test boards, and powered to LCD MODULE, and configuration driven IC, show liquid crystal display die set
Pure white picture, then the driving IC to liquid crystal display die set, which is sent, presets PWM control datas, and driving IC is controlled according to default PWM
The default pwm signal of data generation processed, backlight circuit light liquid crystal display die set according to pwm signal.
It should be noted that the power supply timing that ARM test boards are powered to liquid crystal display die set, and configuration driven IC side
Formula, corresponding prior art can be selected according to the model of the liquid crystal display die set adjusted, the embodiment of the present invention is to this
Not limit.
S203. the original intensity of liquid crystal display die set is obtained, original intensity is given birth to for driving IC according to default PWM control datas
Into default pwm signal corresponding to liquid crystal display die set original intensity.
Specifically, luminance detection device obtains the initial luma values of liquid crystal display die set, i.e. original intensity E, then judge just
Beginning, whether brightness value E was in predetermined luminance range.
After driving IC to be based on the default default pwm signal of PWM control datas generation, backlight circuit is given birth to according to default pwm signal
Liquid crystal display die set is lighted into back facet current, the brightness of liquid crystal display die set now is original intensity；Pass through luminance detection device
The original intensity of liquid crystal display die set is obtained, establishes default corresponding relation between pwm signal and original intensity.
Backlight circuit in the embodiment of the present invention is preferably using LSL98611 as master chip.Luminance detection device uses existing
There is the optical detecting instrument in technology, such as, CA-310 or BM-7, simple to operate, as a result accuracy is higher.
S204. original intensity is judged whether in predetermined luminance range, if it is not, then order performs S205 and S206, if
It is to perform S207.
S205. according to default regulation rule, default PWM control datas is adjusted to adjust default pwm signal, are obtained current
PWM control datas and present PWM signal, make what liquid crystal display die set was shown based on current PWM control datas and present PWM signal
Present intensity is located in predetermined luminance range.
When original intensity is less than the minimum value of predetermined luminance range；According to predetermined interval, default PWM control datas are adjusted
To incrementally increase the dutycycle of pwm signal, current PWM control datas and present PWM signal are obtained, makes liquid crystal display die set, base
In the present PWM signal that driving IC generates according to current PWM control datas, the present intensity of display is located at predetermined luminance range
It is interior.
Specifically, as the minimum value B that initial luma values E is less than brightness range, PWM control datas are just incrementally increased, are obtained
M '=M++, so as to incrementally increase the dutycycle of pwm signal so that initial luma values E is located in predetermined luminance range.
When original intensity is higher than the high-high brightness of predetermined luminance range；According to predetermined interval, default PWM controls number is adjusted
Progressively reduce the dutycycle of pwm signal according to this, obtain current PWM control datas and present PWM signal, make liquid crystal display die set,
The present PWM signal generated based on driving IC according to current PWM control datas, the present intensity of display are located at predetermined luminance range
It is interior.
Specifically, as maximum Ds of the initial luma values E higher than brightness range, just progressively reduce PWM control datas, obtain
M "=M--, so as to progressively reduce the dutycycle of pwm signal so that initial luma values E is located in predetermined luminance range.
S206. current PWM control datas are burned onto in driving IC.
Current PWM control datas M ' or M " corresponding to present intensity in predetermined luminance range is burned onto driving
When in IC, so as to which the dutycycle of current pwm signal be calculated.
By the way that current PWM control datas are burnt into driving IC, during so that liquid crystal display die set being again started up, control mainboard
It can export back facet current corresponding with the present PWM signal by reading the current PWM control datas stored and light liquid crystal
Display module, the brightness of liquid crystal display die set is still located in predetermined luminance range, be located at even if liquid crystal display die set has
The display brightness of stabilization in preset threshold range.
S207. default PWM control datas are burned onto in driving IC.
If original intensity is located in predetermined luminance range, default pair between PWM control datas and original intensity is kept
It should be related to, PWM control datas M will be preset corresponding to default pwm signal dutycycle P and is burned onto in driving IC.
A kind of liquid crystal display die set brightness adjusting method provided in an embodiment of the present invention, by taking in different luminescent properties
Liquid crystal display die set driving IC in burning in advance enter the technological means of suitable PWM control datas so that different luminescent properties
Liquid crystal display die set in normal work, read be burned onto in advance its drive IC in PWM control datas so that liquid crystal display
Module can be directly displayed corresponding with the PWM control datas based on the pwm signal that driving IC generates according to the PWM control datas
, the brightness in predetermined luminance range, realize the luminance difference between the liquid crystal display die set for making different luminescent properties
The technique effect being limited in less predetermined luminance range, significantly reducing liquid crystal display die set rejecting and rework cost
While, reach the display brightness between unified liquid crystal display die set, existing human eye can be distinguished between eliminating liquid crystal display die set
Vision difference, bring more comfortable visual effect to experience to user.
Embodiment three
The embodiments of the invention provide a kind of liquid crystal display die set brightness regulation test board, test board shown in Figure 3
Structural representation, the test board are included with lower module：
PWM control datas sending module 301, default PWM control datas are sent for the driving IC to liquid crystal display die set.
Original intensity acquisition module 302, for obtaining the original intensity of the liquid crystal display die set, the original intensity is
The driving IC according to corresponding to the default pwm signal that the default PWM control datas generate the liquid crystal display die set just
Beginning brightness.
Judge module 303, for judging original intensity whether in predetermined luminance range.
Adjustment module 304, for if it is not, then default to adjust according to the default default PWM control datas of regulation rule adjustment
Pwm signal, current PWM control datas and present PWM signal are obtained, the liquid crystal display die set is based on the current PWM controls
The present intensity that data processed and the present PWM signal are shown is located in the predetermined luminance range.
First burning module 305, for current PWM control datas to be burned onto in driving IC.
Wherein, the first burning module is specifically used for, according to default integer transformation rule, the dutycycle of present PWM signal being turned
Turn to integer numerical value；Current PWM control datas corresponding to integer numerical value are burned onto in driving IC.
Preferably, the present embodiment also includes the second burning module, for when initial luminance bit is in the predetermined luminance range
When interior, default PWM control datas are burned onto in driving IC.
A kind of liquid crystal display die set brightness regulation test board provided in an embodiment of the present invention, by taking in different photisms
Burning in advance enters the technological means of suitable PWM control datas in the driving IC of the liquid crystal display die set of energy so that different photisms
The liquid crystal display die set of energy reads the PWM control datas being burned onto in advance in its driving IC so that liquid crystal in normal work
Show that module can be directly displayed and the PWM control datas pair based on the pwm signal that driving IC generates according to the PWM control datas
Answer, the brightness in predetermined luminance range, realize the luminance difference between the liquid crystal display die set for making different luminescent properties
The different technique effect being limited in less predetermined luminance range, significantly reducing liquid crystal display die set rejecting and doing over again into
This while, the display brightness between unified liquid crystal display die set is reached, existing human eye can divide between eliminating liquid crystal display die set
Other vision difference, more comfortable visual effect is brought to experience to user.
The liquid crystal display die set brightness regulation test board that the embodiment of the present invention is provided, its realization principle and caused technology
Effect is identical with preceding method embodiment, and to briefly describe, the present embodiment part does not refer to part, refers to preceding method implementation
Corresponding contents in example.
Example IV
The embodiments of the invention provide a kind of liquid crystal display die set brightness control system, system architecture shown in Figure 4
Figure, the system include luminance detection device 31；
And the liquid crystal display die set brightness regulation test board 30 as described in embodiment three, wherein, liquid crystal display die set is bright
Degree regulation test board 30 obtains the original intensity and present intensity of liquid crystal display die set by luminance detection device 31.
Liquid crystal display die set brightness regulation test board 30 in the embodiment of the present invention includes PWM control data sending modules
301st, original intensity acquisition module 302, adjustment module 303, the burning module 305 of judge module 304 and first.
Optical brightness detecting instrument of the prior art can be selected in luminance detection device 31 in the embodiment of the present invention, such as
CA-310 or BM-7 etc., simple to operate, as a result accuracy is high.
Embodiment five
Present embodiments provide a kind of liquid crystal display die set brightness regulation equipment, liquid crystal display die set shown in Figure 5
The structural representation of brightness regulation equipment, the equipment include processor 501, memory 502, input unit 503 and output dress
Put 504；The quantity of processor 501 can be one or more in equipment, in Fig. 5 by taking a processor 501 as an example；In equipment
Processor 501, memory 502, input unit 503 and output device 504 can be connected by bus or other modes, Fig. 5
In exemplified by being connected by bus.
Memory 502 is used as a kind of computer-readable recording medium, and journey is can perform available for storage software program, computer
Sequence and module, programmed instruction/module (example as corresponding to the liquid crystal display die set brightness adjusting method in the embodiment of the present invention
Such as, PWM control datas sending module 301, original intensity acquisition module 302, judge module 303, adjustment module 304 and first
Burning module 305).Processor 501 is stored in software program, instruction and module in memory 502 by operation, so as to hold
The various function application of row equipment and data processing, that is, realize above-mentioned liquid crystal display die set brightness adjusting method.
Memory 502 can mainly include storing program area and storage data field, wherein, storing program area can store operation system
Application program needed for system, at least one function；Storage data field can store uses created data etc. according to terminal.This
Outside, memory 502 can include high-speed random access memory, can also include nonvolatile memory, for example, at least one
Disk memory, flush memory device or other non-volatile solid state memory parts.In some instances, memory 502 can enter one
Step includes that relative to the remotely located memory of processor 501, these remote memories network connection to equipment can be passed through.On
The example for stating network includes but is not limited to internet, intranet, LAN, mobile radio communication and combinations thereof.
Input unit 503 can be used for the numeral or character information for receiving input, and produce with the user of equipment set with
And the key signals input that function control is relevant.
Output device 504 may include the display devices such as display screen, for example, the display screen of user terminal.
Embodiment six
The embodiments of the invention provide a kind of computer-readable recording medium, computer program is stored thereon with, the program
A kind of liquid crystal display die set brightness adjusting method is realized when being executed by processor, this method includes：
Driving IC to liquid crystal display die set sends default PWM control datas；
The original intensity of the liquid crystal display die set is obtained, the original intensity is the driving IC according to described default
The original intensity of the liquid crystal display die set corresponding to the default pwm signal of PWM control datas generation；
Judge the original intensity whether in predetermined luminance range；
If it is not, presetting PWM control datas according to described in default regulation rule adjustment to adjust the default pwm signal, obtain
To current PWM control datas and present PWM signal, the liquid crystal display die set is set to be based on the current PWM control datas and institute
The present intensity that present PWM signal is shown is stated to be located in the predetermined luminance range；
The current PWM control datas are burned onto in the driving IC.
Certainly, a kind of storage medium for including computer executable instructions that the embodiment of the present invention is provided, its computer
The method operation that executable instruction is not limited to the described above, can also carry out the searching method that any embodiment of the present invention is provided
In associative operation.
By the description above with respect to embodiment, it is apparent to those skilled in the art that, the present invention
It can be realized by software and required common hardware, naturally it is also possible to realized by hardware, but the former is more in many cases
Good embodiment.Based on such understanding, what technical scheme substantially contributed to prior art in other words
Part can be embodied in the form of software product, and the computer software product can be stored in computer-readable recording medium
In, floppy disk, read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random such as computer
Access Memory, abbreviation RAM), flash memory (FLASH), hard disk or CD etc., including some instructions are causing a calculating
Machine equipment (can be personal computer, server, or network equipment etc.) performs the liquid crystal described in each embodiment of the present invention
Display module brightness adjusting method.
It is worth noting that, in the embodiment of above-mentioned liquid crystal display die set brightness regulation test board, included each list
Member and module are simply divided according to function logic, but are not limited to above-mentioned division, as long as can realize corresponding
Function；In addition, the specific name of each functional unit is also only to facilitate mutually differentiation, is not intended to limit the invention
Protection domain.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
- A kind of 1. liquid crystal display die set brightness adjusting method, for the liquid crystal display mode being made up of luminance test device and test board Test board in group brightness control system, it is characterised in that including：Driving IC to liquid crystal display die set sends default PWM control datas；The original intensity of the liquid crystal display die set is obtained, the original intensity is that the driving IC is controlled according to the default PWM The brightness of the liquid crystal display die set corresponding to the default pwm signal of data generation processed；Judge the original intensity whether in predetermined luminance range；If it is not, presetting PWM control datas according to described in default regulation rule adjustment to adjust the default pwm signal, worked as Preceding PWM control datas and present PWM signal, the liquid crystal display die set is set to be based on the current PWM control datas and described work as The present intensity that preceding pwm signal is shown is located in the predetermined luminance range；The current PWM control datas are burned onto in the driving IC.
- 2. according to the method for claim 1, it is characterised in that the original intensity for obtaining the liquid crystal display die set Step includes：The original intensity shown by the luminance detection device acquisition liquid crystal display die set, the original intensity is described The back facet current that the backlight circuit of liquid crystal display die set exports according to the default pwm signal light the liquid crystal display die set and The brightness of display.
- 3. according to the method for claim 1, it is characterised in that described to preset PWM according to described in default regulation rule adjustment Control data obtains current PWM control datas and present PWM signal, makes the liquid crystal display to adjust the default pwm signal Module is located at the step in the predetermined luminance range based on the present intensity that current PWM control datas and present PWM signal are shown Suddenly include：When minimum brightness or higher than the predetermined luminance range most of the original intensity less than the predetermined luminance range During big brightness；According to predetermined interval, the default PWM control datas are adjusted to incrementally increase or reduce the dutycycle of the pwm signal, Obtain current PWM control datas and present PWM signal, make the liquid crystal display die set be based on the current PWM control datas and The present intensity that the present PWM signal is shown is located in the predetermined luminance range.
- 4. according to the method for claim 1, it is characterised in that send default PWM in the driving IC to liquid crystal display die set Before the step of control data, in addition to：Set the predetermined luminance value scope and back facet current output gear of liquid crystal display die set.
- 5. according to the method for claim 4, it is characterised in that the predetermined luminance value scope of the setting liquid crystal display die set After gear being exported with back facet current, in addition to：According to default integer transformation rule, the corresponding relation of PWM control datas and pwm signal is established.
- 6. according to any described method of Claims 1 to 5, it is characterised in that described to judge whether the original intensity is located at After in predetermined luminance range, in addition to：If so, then the default PWM control datas are burned onto in the driving IC.
- A kind of 7. liquid crystal display die set brightness regulation test board, it is characterised in that including：PWM control data sending modules, default PWM control datas are sent for the driving IC to liquid crystal display die set；Original intensity acquisition module, for obtaining the original intensity of the liquid crystal display die set, the original intensity is the drive The original intensity of dynamic IC liquid crystal display die sets according to corresponding to the default pwm signal that the default PWM control datas generate；Judge module, for judging the original intensity whether in predetermined luminance range；Adjustment module, for if it is not, then described default to adjust according to PWM control datas are preset described in default regulation rule adjustment Pwm signal, current PWM control datas and present PWM signal are obtained, the liquid crystal display die set is based on current PWM control numbers It is located at according to the present intensity shown with present PWM signal in the predetermined luminance range；First burning module, for the current PWM control datas to be burned onto in the driving IC.
- A kind of 8. liquid crystal display die set brightness control system, it is characterised in that including：Luminance detection device；AndLiquid crystal display die set brightness regulation test board as claimed in claim 7, wherein, the liquid crystal display die set brightness regulation Test board obtains the original intensity of the liquid crystal display die set and the present intensity by the luminance detection device.
- 9. a kind of liquid crystal display die set brightness regulation equipment, including memory, processor and storage on a memory and can located The computer program run on reason device, it is characterised in that such as claim 1~6 is realized during the computing device described program In any described liquid crystal display die set brightness adjusting method.
- 10. a kind of computer-readable recording medium, is stored thereon with computer program, it is characterised in that the program is by processor The liquid crystal display die set brightness adjusting method as described in any in claim 1~6 is realized during execution.
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| CN108198528A (en) * | 2017-12-27 | 2018-06-22 | 信利半导体有限公司 | A kind of detection method of OLED brightness |
| CN110095256A (en) * | 2019-05-08 | 2019-08-06 | 歌尔股份有限公司 | Projector ray machine test macro and method |
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| CN110675838A (en) * | 2019-09-27 | 2020-01-10 | Tcl移动通信科技（宁波）有限公司 | Brightness adjusting method and device, computer readable storage medium and terminal |
| CN111640399A (en) * | 2020-05-29 | 2020-09-08 | 创维液晶器件(深圳)有限公司 | Liquid crystal display module and brightness adjusting method, equipment, test board and medium thereof |
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| CN114596825A (en) * | 2022-02-24 | 2022-06-07 | 重庆惠科金扬科技有限公司 | Color temperature adjusting method, color temperature adjusting device and control equipment |
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