CN106444105A - Method, device and system for detecting defects of liquid crystal screen - Google Patents
Method, device and system for detecting defects of liquid crystal screen Download PDFInfo
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- CN106444105A CN106444105A CN201610908478.3A CN201610908478A CN106444105A CN 106444105 A CN106444105 A CN 106444105A CN 201610908478 A CN201610908478 A CN 201610908478A CN 106444105 A CN106444105 A CN 106444105A
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- color
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- control signal
- light source
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses a method, a device and a system for detecting defects of a liquid crystal screen, relates to the technical field of detection, and aiming at solving the problem of improving the detection accuracy on the premise that the structure complexity is not added. The system comprises a center controller, a camera, a screen control panel, a liquid crystal screen, a light source control panel and a full-color backlight source, wherein the center controller is used for transmitting a screen control signal, determining an optimal light color of the full-color backlight source according to the screen control signal, generating a color control signal according to the optimal light color and transmitting the color control signal to the light source control panel; the full-color backlight source is connected with the light source control panel, and is used for receiving a light source display signal and converting colors of the full-color backlight source according to the light source display signal; and the center controller is used for detecting whether the screen image has a defect or not. The method, device and system are mainly applied to the process of detecting liquid crystal screen defects.
Description
Technical field
The present invention relates to detection technique field, more particularly to a kind of method of liquid crystal display screen defects detection, apparatus and system.
Background technology
As the usage amount of electronic product is continuously increased, the usage amount of the liquid crystal display screen on electronic product is applied also constantly to increase
Plus.In order to improve the quality of the electronic product that dispatches from the factory, the quality testing to liquid crystal display screen is requisite ring before electronic product dispatches from the factory
Section.Liquid crystal display screen itself does not light, and why liquid crystal display screen can assume different colours image, is because signal source control liquid crystal display screen, makes
Obtain each pixel on liquid crystal display screen carries out the bandpass filtering of three kinds of wavelength of RGB to white backlight, then is joined by three primary colories
Color, to reach the purpose for showing different colours image.
When white backlight uniform irradiation liquid crystal display screen, liquid crystal display screen is lighted to sprite, and on liquid crystal display screen, defect part occurs
Assume blueness or green defect under the color inconsistent with sprite, such as red picture.Such defect is by right
The screen shot photo for showing, then contrast in the gray level image of photo, searches in photo whether defective point.Prior art
In, when the gray level image of photo is contrasted, if occurring the defect with the inconsistent color of sprite on liquid crystal display screen, as photo is carried on the back
Scape gray value and defect gray value difference are less, defect point be imaged in gray level image performance weaker, then easily cause missing inspection.
In order to overcome missing inspection technological deficiency, detection defect accuracy is improved, can strengthen and lack using color background is weakened
Fall into, that is, the method for the contrast between increase background and defect.In the prior art, when sprite is detected, becoming
Before picture system, or insert band resistance optical filter between white backlight and liquid crystal display screen, optical filter is hindered by band, filters white backlight
In the light homochromy with sprite, through the complementary color light of sprite, to strengthen the contrast between background and defect.No matter which
The mode that insert band hinders optical filter is planted, the additional switching construction with resistance optical filter is required for, increased structure complexity.
Content of the invention
The goal of the invention of the present invention is to provide a kind of method of liquid crystal display screen defects detection, apparatus and system, can solve the problem that
On the premise of structure complexity is not increased, the problem of accuracy in detection is improved.
A kind of embodiments in accordance with the present invention, there is provided system of liquid crystal display screen defects detection, including：Master controller, phase
Machine, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source；
The master controller, for sending screen control signal；
The screen control plate, is connected with the master controller, for receiving the screen control signal, by the screen
Curtain control signal is converted into screen display signal；
The liquid crystal display screen, is connected with the screen control plate, for receiving the screen display signal, shows the screen
Show the corresponding image of signal；
The master controller, is additionally operable to according to the screen control signal, determines the optimal light in the Full-color back light source
According to color；According to the optimum illumination color, color control signal is generated；The color control signal is sent to light source control
Plate；
The light source control plate, is connected with the master controller, for receiving the color control signal, by the face
Color control signal is converted into light source and shows signal；
The Full-color back light source, is connected with the light source control plate, shows signal for receiving the light source, according to described
Light source shows that signal changes the color in the Full-color back light source；
The master controller, is additionally operable to send shooting signal；
The camera, is connected with the master controller, for executing the shooting signal, shoots the liquid crystal display screen, raw
Become screen picture；
The master controller, is additionally operable to obtain the screen picture；Detect the screen picture with the presence or absence of defect.
According to embodiments of the present invention, a kind of method of liquid crystal display screen defects detection is additionally provided, is applied to the inspection of liquid crystal display screen defect
Examining system, the system includes master controller, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, the party
Method includes：
Obtain screen control signal；
According to the screen control signal, the optimum illumination color in the Full-color back light source is determined；
According to the optimum illumination color, color control signal is generated；
The color control signal is sent to the light source control plate, so that light source control plate control is described complete
Color backlight turn colors.
According to embodiments of the present invention, a kind of device of liquid crystal display screen defects detection is additionally provided, is applied to the inspection of liquid crystal display screen defect
Examining system, the system includes master controller, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, repacking
Put including：
Acquiring unit, for obtaining screen control signal；
Determining unit, for according to the screen control signal, determining the optimum illumination color in the Full-color back light source；
First signal generating unit, for according to the optimum illumination color, generating color control signal；
Transmitting element, for the color control signal is sent to the light source control plate, so that the light source control
Making sheet controls Full-color back light source turn colors.
From above technical scheme, a kind of method of liquid crystal display screen defects detection provided in an embodiment of the present invention, device and
System, by obtaining screen control signal, and according to screen control signal, determines the optimum illumination color in Full-color back light source, then
According to optimum illumination color, color control signal is generated, finally color control signal is sent to light source control plate, so that light
Source panel control Full-color back light source turn colors.Compared with prior art, the embodiment of the present invention can determine Full-color back light source
Optimum illumination color so that Full-color back light source sends the lighting color of optimum illumination color.Do not increasing detection means knot
On the premise of structure complexity, by changing the lighting color in Full-color back light source, increase the contrast between background and defect, to carry
The accuracy of high defects detection, overcomes missing inspection defect.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing for using is needed to be briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the block diagram of system according to an a kind of liquid crystal display screen defects detection for being preferable to carry out exemplifying；
Fig. 2 is the method flow diagram according to an a kind of liquid crystal display screen defects detection for being preferable to carry out exemplifying；
Fig. 3 is the method flow diagram according to an another kind of liquid crystal display screen defects detection for being preferable to carry out exemplifying；
Fig. 4 is the device composition frame chart according to an a kind of liquid crystal display screen defects detection for being preferable to carry out exemplifying；
Fig. 5 is the device composition frame chart according to an another kind of liquid crystal display screen defects detection for being preferable to carry out exemplifying.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Detection liquid crystal display screen defect, mainly shoots the liquid crystal display images under different conditions by camera, then judges liquid crystal
Screen image whether there is defect.Liquid crystal display screen show color background when, if liquid crystal display screen existing defects, color background and defect it
Between contrast less, cause the situation for easily occurring missing inspection in detection process becomes.
Embodiment one
The embodiment of the present invention one provides a kind of system of liquid crystal display screen defects detection, as shown in figure 1, the system includes：In
Heart controller 11, camera 12, screen control plate 13, liquid crystal display screen 14, light source control plate 15, Full-color back light source 16；
In liquid crystal display screen defect detecting system, except the part that said system includes, also include support, conveyer belt, confession
The accessories such as electric installation.Accessory is indispensable when liquid crystal display screen is detected, while be also conventional, and at this
In bright embodiment, accessory is not the key for solving the problems, such as easily to occur missing inspection in detection process, so here to accessory
It is not described in detail.
The master controller 11, for sending screen control signal.
Master controller 11 is the main control part of whole system, controls the operation of total system.Master controller 11 is permissible
Including processing unit, display unit, memory element etc., master controller 11 can in control system various pieces operation,
Various pieces can be monitored again.When 14 defect of liquid crystal display screen is detected, need to detect liquid crystal display screen 14 in multiple different display shapes
Screen picture under state whether there is defect, the default DISPLAY ORDER for arranging 14 dispaly state of liquid crystal display screen of master controller 11, so
Afterwards according to DISPLAY ORDER, corresponding screen control signal being sent successively, can be shown according to screen control signal so as to liquid crystal display screen 14
Corresponding image.
Screen control signal is sent, and the corresponding screen picture of the screen control signal is being got when master controller 11
Afterwards, next screen control signal is retransmited.Can also pre-set between the adjacent time for sending screen control signal twice
Every the size of time interval will ensure that master controller 11 can receive the corresponding screen picture of each screen control signal.?
In the embodiment of the present invention, the adjacent set-up mode for sending the time interval of screen control signal twice is not limited.
The screen control plate 13, is connected with the master controller 11, for receiving the screen control signal, by institute
State screen control signal and be converted into screen display signal.
Screen control plate 13, is connected with master controller 11, can pass through serial line interface, the interface type such as USB interface, use
Data wire connects；Can be connected by infrared transceiver device；Can also bluetooth transceiver therein connection.Right in embodiments of the present invention
Screen control plate 13 is not limited with the connected mode of master controller 11.
Screen control plate 13 receives the screen control signal of the transmission of master controller 11, and screen control signal is converted into
Screen display signal.Due to different liquid crystal display screens 14, corresponding screen display signal is also differed, so in master controller 11
With 14 middle setting screen control plate 13 of liquid crystal display screen.Screen control plate 13 is matched with liquid crystal display screen 14, and screen control plate 13 can
Screen control signal is converted into screen display signal, the signal that screen display signal directly can be executed for liquid crystal display screen 14.Due to
Screen control plate 13 is set, the screen control signal that master controller 11 sends, it is not necessary to the difference of 14 model of liquid crystal display screen
And the screen control signal for sending is adjusted, save labour turnover, reduce and 14 defect detecting system operator of liquid crystal display screen are wanted
Ask, improve detection efficiency.
The liquid crystal display screen 14, is connected with the screen control plate 13, for receiving the screen display signal, is shown described
The corresponding image of screen display signal.
Liquid crystal display screen 14 is liquid crystal display screen 14 to be detected, between liquid crystal display screen 14 and screen control plate 13, generally adopts flexible wires
Road plate connection.Liquid crystal display screen 14 is according to the screen display signal for receiving, and display screen shows the corresponding image of signal.
The master controller 11, is additionally operable to according to the screen control signal, determines the Full-color back light source 16 most
Good lighting color；According to the optimum illumination color, color control signal is generated；The color control signal is sent to light source
Panel 15.
Liquid crystal display screen 14 itself does not light, and why liquid crystal display screen 14 can assume different colours image, be because signal source control
Liquid crystal display screen so that each pixel on liquid crystal display screen 14 carries out the bandpass filtering of three kinds of wavelength of RGB to white backlight, then passes through
Three primary colories are matched colors, to reach the purpose for showing different colours image.Master controller 11 is determined according to screen control signal
The optimum illumination color in Full-color back light source 16, by changing the bandpass filtering scope of Full-color back light source color and liquid crystal display screen 14, increases
Plus the contrast between defect and background, to improve the accuracy of liquid crystal display screen defect dipoles.Determining Full-color back light source 16 most
After good lighting color, according to optimum illumination color, color control signal is generated, color control signal is used for controlling Full-color back light
The change of 16 lighting color of source.Color control signal is finally sent, is changed according to color control signal so as to Full-color back light source 16
Lighting color.
Optimum illumination color be overcome detection liquid crystal display screen defect during there is the key factor of missing inspection problem.Specifically really
Determine optimum illumination color, including：If the screen control signal is not sprite control signal, it is determined that preset brightness ratio
White light be the optimum illumination color；If the screen control signal is sprite control signal, the screen is obtained
The picture color of control signal control；According to preset brightness ratio, the complementary color of the picture color is calculated；Determine that the complementary color is
The optimum illumination color.
The light source control plate 15, is connected with the master controller 11, for receiving the color control signal, by institute
State color control signal and be converted into light source display signal.
Light source control plate 15 is similar with screen control plate 13, due to the number of the LED in different Full-color back light sources 16, line
Road arrangement is not quite identical, so light source control plate 15 is matched with Full-color back light source 16.Light source control plate 15, receives color control
Signal processed, and color control signal is converted into light source display signal.
The Full-color back light source 16, is connected with the light source control plate 15, shows signal for receiving the light source, according to
The light source shows that signal changes the color in the Full-color back light source 16.
Full-color back light source, is made up of multiple all-colour LEDs, according to the illumination range of all-colour LED, and the Full-color back light of demand
Desirability of the source to light-source brightness, determines the distance between all-colour LED.Full-color back light source receives light source and shows signal, according to
Light source shows that signal changes the color in Full-color back light source 16.
The master controller 11, is additionally operable to send shooting signal.
Detection 14 defect of liquid crystal display screen, the actually image of detection liquid crystal display screen 14 display, the image is shot by camera and obtains
Take.Master controller 11 sends and shoots signal, has the image for shooting whether signal control camera 12 shoots the display of liquid crystal display screen 14.
The camera 12, is connected with the master controller 11, for executing the shooting signal, shoots the liquid crystal
Screen, generates screen picture.
Camera 12 is connected with master controller 11, for shooting the image of the display of liquid crystal display screen 14.When receiving shooting signal
When, execute and signal is shot, the image of the display of liquid crystal display screen 14 is shot, generate screen picture.Between camera 12 and liquid crystal display screen 14, there is phase
In visual field to the photographic head that fixing position relationship, most basic liquid crystal display screen to be ensured 14 are located at camera 12, need in a word to protect
The definition of the image that card shoots.In embodiments of the present invention, the precondition for ensureing the definition of the image for shooting is not done
Describe in detail, the right moment for camera of a restriction camera 12.
The master controller 11, is additionally operable to obtain the screen picture；Detect the screen picture with the presence or absence of defect.
Master controller 11, obtains the screen picture of the liquid crystal display screen 14 of the shooting of camera 12, and detects whether screen picture is deposited
In defect.Screen picture is the image that the liquid crystal display screen 14 that camera 12 shoots shows.
From above technical scheme, a kind of method of liquid crystal display screen defects detection provided in an embodiment of the present invention, by obtaining
Screen control signal is taken, and according to screen control signal, determines the optimum illumination color in Full-color back light source 16, further according to optimal light
According to color, color control signal is generated, finally color control signal is sent to light source control plate 15, so that light source control plate
16 turn colors of control Full-color back light source.Compared with prior art, the embodiment of the present invention can determine Full-color back light source 16 most
Good lighting color, so that Full-color back light source 16 sends the lighting color of optimum illumination color.Do not increasing structure of the detecting device
On the premise of complexity, by changing the lighting color in Full-color back light source 16, increase the contrast between background and defect, to carry
The accuracy of high defects detection, overcomes missing inspection defect.
Embodiment two
The embodiment of the present invention two provides a kind of method of liquid crystal display screen defects detection, is applied to liquid crystal display screen defects detection system
System, the system includes master controller, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, as Fig. 2 institute
Show, the method includes：
201st, screen control signal is obtained.
Screen control signal, refers to the signal for controlling liquid crystal display screen to show.The screen control signal of control centre's transmission is obtained,
In order to determine the situation of change of liquid crystal display screen according to screen control signal.
202nd, according to the screen control signal, determine the optimum illumination color in the Full-color back light source.
When liquid crystal display screen defect is detected, it is found that liquid crystal display screen is with color background when white backlight source uniform irradiation liquid crystal display screen
Picture is lighted, and on liquid crystal display screen, defect part occurs the color inconsistent with color background picture, such as in red background picture
Under present imperfect to the bandpass filtering of white backlight under blueness or green defect, i.e. color background picture, due to the red back of the body
Contrast between scape picture and blue defect, or red background picture and green defect, i.e. color background picture and defect is not
Substantially, missing inspection is easily caused.
In order to overcome the missing inspection problem in detection process, adopt the mode for changing backlight color to weaken background, strengthen
Defect.According to color background picture, the complementary color of color background picture is calculated, using the complementary color of color background picture as full-color
The optimum illumination color of backlight.
203rd, according to the optimum illumination color, color control signal is generated；
Hardware module according to bottom is arranged with interface, and optimum illumination color, generates color control signal.Color control
Signal processed, output port information including color control signal, time sequence information, color control information etc..Implement in the present invention
In example, the information category that color control signal includes is not limited.
204th, the color control signal is sent to the light source control plate, so that light source control plate control institute
State Full-color back light source turn colors.
Light source control plate, for controlling the color in Full-color back light source.Light source control plate is according to the color control letter for receiving
Number, generate light source and show signal, and then control the color in Full-color back light source.
A kind of method of liquid crystal display screen defects detection provided in an embodiment of the present invention, by obtaining screen control signal, and root
According to screen control signal, the optimum illumination color in Full-color back light source being determined, further according to optimum illumination color, generates color control letter
Number, finally color control signal is sent to light source control plate, so that light source control plate control Full-color back light source turn colors.
Compared with prior art, the embodiment of the present invention can determine the optimum illumination color in Full-color back light source, so that Full-color back light source
Send the lighting color of optimum illumination color.On the premise of structure of the detecting device complexity is not increased, by changing the full-color back of the body
The lighting color of light source, increases the contrast between background and defect, to improve the accuracy of defects detection, overcomes missing inspection to lack
Fall into.
Embodiment three
The method that the embodiment of the present invention three provides another kind of liquid crystal display screen defects detection, is applied to liquid crystal display screen defects detection system
System, the system includes master controller, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, as Fig. 3 institute
Show, the method includes：
301st, according to preset detected rule, the screen control signal is generated；
When liquid crystal display screen defect is detected, need to detect filtering situation of the liquid crystal display screen under different bandpass case, so in inspection
Before survey starts, screen control signal is generated.Screen control signal, refers in a liquid crystal display screen detection process, many to liquid crystal display screen
The continuous control signal of secondary control.Preset detected rule can be arranged from high to low according to liquid crystal display screen shortage probability；Can also root
Arranged according to the data volume of screen control signal from small to large；Can also according to the signal complexity of screen control signal from easy to difficult
Arrangement.In embodiments of the present invention, the preset detected rule for generating screen control signal is not limited.
302nd, screen control signal is obtained；
303rd, according to the screen control signal, determine the optimum illumination color in the Full-color back light source；
Optimum illumination color be overcome detection liquid crystal display screen defect during there is the key factor of missing inspection problem.Specifically really
Determine optimum illumination color, including：If the screen control signal is not sprite control signal, it is determined that preset brightness ratio
White light be the optimum illumination color；If the screen control signal is sprite control signal, the screen is obtained
The picture color of control signal control；According to preset brightness ratio, the complementary color of the picture color is calculated；Determine that the complementary color is
The optimum illumination color.
White light, is mixed to form by the light of three kinds of primary colours of RGB.The brightness ratio difference of three kinds of primary colours, can generate
White light, but the Detection results for detecting liquid crystal display screen defect are had an impact.If so white light is optimum illumination color, three kinds of RGB
Primary colours will generate white light according to preset brightness ratio, and the brightness ratio of preferred RGB is 3:6:1, colour temperature is in 5500K-
Between 6500K.
304th, according to the optimum illumination color, color control signal is generated；
305th, the color control signal is sent to the light source control plate, so that light source control plate control institute
State Full-color back light source turn colors；
306th, the screen picture is obtained；
After liquid crystal display screen is located in the visual field of camera, in LCD pictures, and Full-color back light lamp produces illumination, camera
Liquid crystal display images are shot, generates screen picture.Master controller obtains camera and shoots the screen picture for generating.
307th, detect that the screen picture whether there is defect.
Screen picture is corresponding with liquid crystal display screen, and detection screen picture whether there is defect, i.e. detection liquid crystal display screen whether there is
Defect.Specifically, detection screen picture includes with the presence or absence of defect：The screen picture is converted to gray level image；If described
The gray value of gray level image is differed, it is determined that the screen picture existing defects；If all gray values of the gray level image
All identical, it is determined that the screen picture not existing defects.
If the gray value difference of gray level image is less, that is to say, that the gray value discrimination in gray level image is relatively low, easily
Cause erroneous judgement.In Full-color back light source, carry out after illumination, increasing the difference of the gray value of gray level image using optimum illumination color
Different, that is, the discrimination of gray value in gray level image is increased, reduce False Rate, reduce missing inspection probability.
Example IV
The embodiment of the present invention four provides a kind of device of liquid crystal display screen defects detection, is applied to liquid crystal display screen defects detection system
System, the system includes master controller, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, as Fig. 4 institute
Show, the method includes：
Acquiring unit 41, for obtaining screen control signal；
Determining unit 42, for according to screen control signal, determining the optimum illumination color in Full-color back light source；
First signal generating unit 43, for according to optimum illumination color, generating color control signal；
Transmitting element 44, for color control signal is sent to light source control plate, so that the control of light source control plate is complete
Color backlight turn colors.
Further, as shown in figure 5, the device includes：
Second signal generating unit 45, for before screen control signal is obtained, according to preset detected rule, generates screen control
Signal processed.
Further, as shown in figure 5, determining unit 42, including：
Determining module 421, if be not sprite control signal for screen control signal, it is determined that preset brightness ratio
White light be optimum illumination color；
Acquisition module 422, if being sprite control signal for screen control signal, obtains screen control signal control
The picture color of system；
Computing module 423, for according to preset brightness ratio, calculating the complementary color of picture color；
Determining module 421, is additionally operable to determine that complementary color is optimum illumination color.
Further, as shown in figure 5, the device also includes：
Acquiring unit 41, is additionally operable to after color control signal to be sent to light source control plate, obtains screen picture；
Detector unit 46, for detecting screen picture with the presence or absence of defect.
Further, as shown in figure 5, detector unit 46, including：
Modular converter 461, for being converted to gray level image by screen picture；
Determining module 462, if differ for the gray value of gray level image, it is determined that screen picture existing defects；
Determining module 462, if all gray values for being additionally operable to gray level image are all identical, it is determined that screen picture does not exist scarce
Fall into.
A kind of device of liquid crystal display screen defects detection provided in an embodiment of the present invention, by obtaining screen control signal, and root
According to screen control signal, the optimum illumination color in Full-color back light source being determined, further according to optimum illumination color, generates color control letter
Number, finally color control signal is sent to light source control plate, so that light source control plate control Full-color back light source turn colors.
Compared with prior art, the embodiment of the present invention can determine the optimum illumination color in Full-color back light source, so that Full-color back light source
Send the lighting color of optimum illumination color.On the premise of structure of the detecting device complexity is not increased, by changing the full-color back of the body
The lighting color of light source, increases the contrast between background and defect, to improve the accuracy of defects detection, overcomes missing inspection to lack
Fall into.
Those skilled in the art will readily occur to its of the present invention after considering description and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the present invention, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the precision architecture for being described above and being shown in the drawings is the invention is not limited in, and
And various modifications and changes can carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (11)
1. a kind of system of liquid crystal display screen defects detection, it is characterised in that the system includes：Master controller, camera, screen control
Making sheet, liquid crystal display screen, light source control plate, Full-color back light source；
The master controller, for sending screen control signal；
The screen control plate, is connected with the master controller, for receiving the screen control signal, by the screen control
Signal processed is converted into screen display signal；
The liquid crystal display screen, is connected with the screen control plate, for receiving the screen display signal, shows the screen display
The corresponding image of signal；
The master controller, is additionally operable to according to the screen control signal, determines the optimum illumination face in the Full-color back light source
Color；According to the optimum illumination color, color control signal is generated；The color control signal is sent to light source control plate；
The light source control plate, is connected with the master controller, for receiving the color control signal, by the color control
Signal processed is converted into light source and shows signal；
The Full-color back light source, is connected with the light source control plate, shows signal for receiving the light source, according to the light source
Show that signal changes the color in the Full-color back light source；
The master controller, is additionally operable to send shooting signal；
The camera, is connected with the master controller, for executing the shooting signal, is shot the liquid crystal display screen, is generated screen
Curtain image；
The master controller, is additionally operable to obtain the screen picture；Detect the screen picture with the presence or absence of defect.
2. a kind of method of liquid crystal display screen defects detection, is applied to liquid crystal display screen defect detecting system, and the system includes center control
Device, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, it is characterised in that methods described includes：
Obtain screen control signal；
According to the screen control signal, the optimum illumination color in the Full-color back light source is determined；
According to the optimum illumination color, color control signal is generated；
The color control signal is sent to the light source control plate, so that the light source control plate controls the full-color back of the body
Light source turn colors.
3. method according to claim 2, it is characterised in that before the acquisition screen control signal, methods described
Also include：
According to preset detected rule, the screen control signal is generated.
4. method according to claim 2, it is characterised in that described according to the screen control signal, determines described complete
The optimum illumination color of color backlight, including：
If the screen control signal is not sprite control signal, it is determined that the white light of preset brightness ratio is described optimal
Lighting color；
If the screen control signal is sprite control signal, the picture face of screen control signal control is obtained
Color；
According to preset brightness ratio, the complementary color of the picture color is calculated；
Determine the complementary color for the optimum illumination color.
5. method according to claim 2, it is characterised in that the color control signal is sent to light source control described
After making sheet, methods described also includes：
Obtain the screen picture；
Detect the screen picture with the presence or absence of defect.
6. method according to claim 5, it is characterised in that the detection screen picture whether there is defect, bag
Include：
The screen picture is converted to gray level image；
If the gray value of the gray level image is differed, it is determined that the screen picture existing defects；
If all gray values of the gray level image are all identical, it is determined that the screen picture not existing defects.
7. a kind of device of liquid crystal display screen defects detection, is applied to liquid crystal display screen defect detecting system, and the system includes center control
Device, camera, screen control plate, liquid crystal display screen, light source control plate, Full-color back light source, it is characterised in that described device also includes：
Acquiring unit, for obtaining screen control signal；
Determining unit, for according to the screen control signal, determining the optimum illumination color in the Full-color back light source；
First signal generating unit, for according to the optimum illumination color, generating color control signal；
Transmitting element, for the color control signal is sent to the light source control plate, so that the light source control plate
Control Full-color back light source turn colors.
8. device according to claim 7, it is characterised in that described device includes：
Second signal generating unit, for, before the acquisition screen control signal, according to preset detected rule, generating the screen
Control signal.
9. device according to claim 7, it is characterised in that the determining unit, including：
Determining module, if be not sprite control signal for the screen control signal, it is determined that preset brightness ratio
White light is the optimum illumination color；
Acquisition module, if being sprite control signal for the screen control signal, obtains the screen control signal
The picture color of control；
Computing module, for according to preset brightness ratio, calculating the complementary color of the picture color；
Determining module, is additionally operable to determine the complementary color for the optimum illumination color.
10. device according to claim 7, it is characterised in that described device also includes：
The acquiring unit, be additionally operable to described the color control signal is sent to light source control plate after, obtain described
Screen picture；
Detector unit, for detecting the screen picture with the presence or absence of defect.
11. devices according to claim 7, it is characterised in that the detector unit, including：
Modular converter, for being converted to gray level image by the screen picture；
Determining module, if differ for the gray value of the gray level image, it is determined that the screen picture existing defects；
Determining module, if all gray values for being additionally operable to the gray level image are all identical, it is determined that the screen picture is not present
Defect.
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| CN201610908478.3A CN106444105A (en) | 2016-10-18 | 2016-10-18 | Method, device and system for detecting defects of liquid crystal screen |
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| CN201610908478.3A CN106444105A (en) | 2016-10-18 | 2016-10-18 | Method, device and system for detecting defects of liquid crystal screen |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594484A (en) * | 2018-04-19 | 2018-09-28 | 武汉精测电子集团股份有限公司 | Panel detection and reparation integral system |
| CN108646445A (en) * | 2018-05-03 | 2018-10-12 | 武汉精测电子集团股份有限公司 | A kind of defect detecting device of adaptive backlight |
| CN109001922A (en) * | 2018-07-20 | 2018-12-14 | 深圳Tcl新技术有限公司 | Test method, device and the storage medium of liquid crystal display optical property |
| CN109949725A (en) * | 2019-03-06 | 2019-06-28 | 武汉精立电子技术有限公司 | A kind of AOI system image grayscale standardized method and system |
| CN110262092A (en) * | 2019-04-26 | 2019-09-20 | 合刃科技（武汉）有限公司 | A kind of liquid crystal display detection method based on NI Vision Builder for Automated Inspection |
| CN113538431A (en) * | 2021-09-16 | 2021-10-22 | 深圳市鑫信腾科技股份有限公司 | Display screen flaw positioning method and device, terminal equipment and system |
| CN114354622A (en) * | 2021-12-30 | 2022-04-15 | 苏州凌云视界智能设备有限责任公司 | Defect detection method, device, equipment and medium for display screen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1501073A (en) * | 2002-11-18 | 2004-06-02 | 日本麦可罗尼克斯股份有限公司 | Detecting method and device for display board |
| CN1877281A (en) * | 2005-06-10 | 2006-12-13 | 精工爱普生株式会社 | Display panel module, display unit, inspection device for display panel |
| CN101202016A (en) * | 2006-12-15 | 2008-06-18 | 英业达股份有限公司 | Display and correlation control method thereof |
| US20090015825A1 (en) * | 2007-07-11 | 2009-01-15 | Han Rok Chung | Apparatus and method for inspecting liquid crystal display |
| JPWO2011043065A1 (en) * | 2009-10-09 | 2013-03-04 | シャープ株式会社 | Display defect inspection apparatus and display defect inspection method for display panel |
| CN103389308A (en) * | 2012-05-11 | 2013-11-13 | 牧德科技股份有限公司 | Optical reinspection system and detection method thereof |
-
2016
- 2016-10-18 CN CN201610908478.3A patent/CN106444105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1501073A (en) * | 2002-11-18 | 2004-06-02 | 日本麦可罗尼克斯股份有限公司 | Detecting method and device for display board |
| CN1877281A (en) * | 2005-06-10 | 2006-12-13 | 精工爱普生株式会社 | Display panel module, display unit, inspection device for display panel |
| CN101202016A (en) * | 2006-12-15 | 2008-06-18 | 英业达股份有限公司 | Display and correlation control method thereof |
| US20090015825A1 (en) * | 2007-07-11 | 2009-01-15 | Han Rok Chung | Apparatus and method for inspecting liquid crystal display |
| JPWO2011043065A1 (en) * | 2009-10-09 | 2013-03-04 | シャープ株式会社 | Display defect inspection apparatus and display defect inspection method for display panel |
| CN103389308A (en) * | 2012-05-11 | 2013-11-13 | 牧德科技股份有限公司 | Optical reinspection system and detection method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594484A (en) * | 2018-04-19 | 2018-09-28 | 武汉精测电子集团股份有限公司 | Panel detection and reparation integral system |
| CN108594484B (en) * | 2018-04-19 | 2022-11-11 | 武汉精测电子集团股份有限公司 | Panel detection and repair integrated system |
| CN108646445A (en) * | 2018-05-03 | 2018-10-12 | 武汉精测电子集团股份有限公司 | A kind of defect detecting device of adaptive backlight |
| CN108646445B (en) * | 2018-05-03 | 2021-03-16 | 武汉精测电子集团股份有限公司 | Defect detection device that self-adaptation is shaded |
| CN109001922A (en) * | 2018-07-20 | 2018-12-14 | 深圳Tcl新技术有限公司 | Test method, device and the storage medium of liquid crystal display optical property |
| CN109949725A (en) * | 2019-03-06 | 2019-06-28 | 武汉精立电子技术有限公司 | A kind of AOI system image grayscale standardized method and system |
| CN110262092A (en) * | 2019-04-26 | 2019-09-20 | 合刃科技（武汉）有限公司 | A kind of liquid crystal display detection method based on NI Vision Builder for Automated Inspection |
| CN113538431A (en) * | 2021-09-16 | 2021-10-22 | 深圳市鑫信腾科技股份有限公司 | Display screen flaw positioning method and device, terminal equipment and system |
| CN114354622A (en) * | 2021-12-30 | 2022-04-15 | 苏州凌云视界智能设备有限责任公司 | Defect detection method, device, equipment and medium for display screen |
| CN114354622B (en) * | 2021-12-30 | 2024-01-19 | 苏州凌云视界智能设备有限责任公司 | Display screen defect detection method, device, equipment and medium |
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