CN101604502B - LCD double side display device and maintenance system and maintenance method thereof - Google Patents
LCD double side display device and maintenance system and maintenance method thereof Download PDFInfo
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- CN101604502B CN101604502B CN2009100842333A CN200910084233A CN101604502B CN 101604502 B CN101604502 B CN 101604502B CN 2009100842333 A CN2009100842333 A CN 2009100842333A CN 200910084233 A CN200910084233 A CN 200910084233A CN 101604502 B CN101604502 B CN 101604502B
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Abstract
The invention discloses an LCD double side display device, which comprises an image signal interface, a user operation interface, a liquid crystal drive unit, at least two liquid crystal units, a central processing unit, an LED backlight control unit, an LED backlight unit, and a maintenance communication interface, wherein the maintenance communication interface is connected with the central processing unit, used for receiving external maintenance data and sending the external maintenance data to the central processing unit, and also used for transmitting status data of the LCD double side display device in the central processing unit to outside. In addition, the invention also discloses a maintenance system and a maintenance method for the LCD double side display device. The proposal of the invention can adjust the LED backlight unit of the LCD double side display unit under the condition of no-disassembly of the machine.
Description
Technical field
The invention belongs to LCD double-side display device technical field, particularly a kind of LCD double-side display device and maintenance system and maintaining method.
Background technology
In display, cathode-ray tube CRT was once once occupying whole market, but, due to the restriction on its weight and chi, can't meet miniaturization of electronic products and light-weighted trend, and the small and exquisite display device of a kind of volume of current needs substitutes CRT monitor.Afterwards along with the research to display technique, liquid crystal display LCD is the advantage such as little, lightweight and low-power consumption with its volume, can realize substituting the Presentation Function of CRT, along with the further investigation to LCD, be widely used in the display terminals such as flat-panel monitor and PC, and market is to the demand increase year after year trend of LCD.
Because LCD is passive demonstration, itself be not irradiative, need to there is a back light unit to irradiate the LCD panel, show image by the light seen through, so a back light unit of LCD needs shows and uses for image as its light source.
Current LCD is backlight mainly contains two types of cold cathode fluorescent lamp CCFL and LEDs.The CCFL main flow that once becoming backlight, simply praised highly with its technology with low cost.But its serviceable life short rapid wear, there is inborn deficiency in brightness and color rendition, be difficult to meet high-quality image display requirement, and CCFL contains the mercury metal huge to environmental hazard, put into effect successively many restrictions of the product to containing mercury all over the world.LED-backlit is arisen at the historic moment for this reason.Relatively traditional C CFL is backlight, adopts LED to be LCD backlight, and the higher color representation power of brightness is strong, and its color rendition scope can reach 105% of NTSC, is much better than CCFL 70%～85% performance level backlight, more easily accomplishes wide look zone.Can reach 100,000 hours the serviceable life of LED in addition, be better than 80,000 hours of CCFL half bright state.And more simply saved the required inversion high-tension circuit of CCFL in circuit design, structure is simpler.Based on above plurality of advantages, make current LED replace gradually CCFL, be widely used in LCD backlight.
Yet, when using LED for back light, need a plurality of LED to form array, and there is larger difference in the parameter of each LED.The time that the impact caused according to parameter differences occurs, the difference of these parameters can be divided into to " instant property difference " and " attenuation characteristic difference ".
Instant property difference: element is being produced the property difference just existed.This problem mainly concentrates on LCD dispatch from the factory before, because the factors such as LED manufacturing process and discreteness cause, even if with a batch LED who produces with material, still deposit certain difference on performance parameter, it is inconsistent that result will cause using LED to do the luminous brightness and color of back light unit, being reflected on lcd screen is that brightness and color is inhomogeneous, affects the display effect of LCD.
Attenuation characteristic difference: element in use, due to the decay the aging inconsistent performance difference brought.This problem mainly concentrates on a satisfactory LCD product, in use for some time, due to LED working environment and " attenuation characteristic difference ", cause LED aging inconsistent, be that the brightness and color that LED sends will change, and the growth with service time is more and more obvious, this will cause LCD output picture brightness color inhomogeneous.After this unevenness reaches certain degree, can think that fault has appearred in the LCD display device, needs to be serviced.Conventional maintaining method is, after tearing machine open by the special maintenance personnel, to determine by test repeatedly the LED that the backlight unit brightness color error ratio is larger, and changed.
Yet, due to the LED after the new LED changed and use, there is larger difference in " instant characteristic " and " attenuation characteristic ", need to repeatedly change debugging repeatedly, just may find with former back light unit in the close LED substitute of LED array optical parametric, the long randomness of this maintaining method maintenance period is large, be difficult to control maintenance period, maintainer's fatiguability, maintenance effects varies with each individual, and finally is difficult to the maintenance criterion that reaches unified.
Therefore, need a kind of better maintaining method to solve LED in use, the brightness misalignment problem of bringing due to " instant property difference " and " the attenuation characteristic difference " of LED.
Summary of the invention
The present invention is in order to solve problems of the prior art, particularly a kind of LCD double-side display device and maintenance system and maintaining method.
Technical solution of the present invention is as follows:
A kind of LCD double-side display device, comprise picture signal interface, user interface, unit, at least 2 liquid crystal cells, CPU (central processing unit), LED-backlit control module, LED-backlit unit and safeguard communication interface;
Describedly safeguard that communication interface is connected with described CPU (central processing unit), for receiving outside service data, be sent to described CPU (central processing unit), also for the status data by described each display screen of CPU (central processing unit) LCD double-side display device, be transferred to outside;
Described CPU (central processing unit) arranges computing module and control module, described computing module is for the described service data of analytical calculation, result of calculation is sent to described control module, described control module is for controlling described LED-backlit control module according to described result of calculation, to drive described LED-backlit unit;
Wherein, described service data is maintenance control data or LED-backlit correction data; Described status data comprises the identification code data of the identification code data of described LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit.
An example is, described LCD double-side display device comprises following assembly: only picture signal interface, only user interface, only one safeguard communication interface, only a unit reaches an only LED-backlit control module, and said modules is connected with a CPU (central processing unit) respectively;
Also comprise the first liquid crystal cells and the second liquid crystal cells that are connected with described unit respectively, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit provides back light for described the first liquid crystal cells and described the second liquid crystal cells simultaneously.
An example is, described LCD double-side display device comprises following assembly: two picture signal interfaces, two user interfaces, two are safeguarded communication interface, two units and two LED-backlit control modules, said modules is connected with a CPU (central processing unit) respectively;
I.e. the first image interface, first user operation-interface, the first maintenance communication interface, first unit machine the first LED-backlit control module are connected with described CPU (central processing unit) respectively, also comprise the first liquid crystal cells be connected with the first unit, the first LED-backlit unit be connected with the first LED-backlit control module, wherein said the first LED-backlit unit provides back light for described the first liquid crystal cells, above module composition the first display screen system;
In addition, the second image interface, the second user interface, the second maintenance communication interface, the second unit and the second LED-backlit control module are connected with described CPU (central processing unit) respectively, also comprise the second liquid crystal cells be connected with the second unit, the second LED-backlit unit be connected with the second LED-backlit control module, wherein said the second LED-backlit unit provides back light for described the second liquid crystal cells, forms the second display screen system.
An example is, described LCD double-side display device comprises two groups of display device, every group of display device all comprises a picture signal interface, user interface, one and safeguards communication interface, a unit and a LED-backlit control module, said modules is connected with a CPU (central processing unit) respectively; Also comprise the liquid crystal cells be connected with described unit, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit is described liquid crystal cells back light.
Wherein, the described of above-mentioned LCD double-side display device safeguards that communication interface is wireless communication interface or wire communication interface;
Wherein, described wireless communication interface is infrared communication interface or bluetooth communication interface; Perhaps, described wire communication interface is serial communication interface or parallel communication interface.
A kind of maintenance system of LCD double-side display device, comprise main frame and display screen checkout equipment;
Described LCD double-side display device contains one while safeguarding communication interface, and described main frame safeguards that with this communication interface is connected, for obtaining the status data of described LCD double-side display device;
Perhaps, described LCD double-side display device contains two while safeguarding communication interface, and described main frame safeguards that with two communication interface is connected respectively, for obtaining the status data of described each display screen of LCD double-side display device;
Described display screen checkout equipment, be connected with described main frame, for measuring respectively optics or the view data of described each display screen of LCD double-side display device, and the measurement data obtained sent to respectively to main frame;
Described main frame, also for the described status data of analytical calculation and described measurement data, generate service data, is sent to described LCD double-side display device;
Wherein, described status data comprises the identification code data of described LCD double-side display device, the identification code data of each LED-backlit unit and the optical data of each LED-backlit unit; Described measurement data comprises brightness data and the color data of each display screen of LCD double-side display device; Described service data is maintenance control data or LED-backlit correction data.
An example is that described main frame comprises the first communication interface, the second communication interface, communication control module and data processing module;
Described the first communication interface, safeguard that with described communication interface is connected, and for the control according to described communication control module, between described main frame and described LCD double-side display device, carries out two-way information interaction;
Described the second communication interface, be connected with the communication interface of described display screen checkout equipment, for described display screen checkout equipment both-way communication, receive described measurement data, be sent to described communication control module;
Described communication control module, for controlling described display screen checkout equipment, measure the screen data of described LCD double-side display device, and the measurement data obtained be sent to described data processing module;
Described communication control module, also be sent to described data processing module for the described status data that will obtain by described the first communication interface;
Described data processing module, for according to described measurement data and described status data, calculate by analysis, generates described service data, and be sent to described communication control module.
An example is that described maintenance system also contains the image control mold, with described communication control module bidirectional data exchange, for controlling described LCD double-side display device, according to specific mode, shows image.
An example is that described display screen checkout equipment is optical detection apparatus or image capture device.
An example is that described optical detection apparatus is radiometer, photometer, camera, tristimulus colour meter or spectroradiometer; Described image capture device is camera or video camera.
An example is that described display screen checkout equipment is image capture device; And described maintenance system also comprises image analysis module, with described communication control module, be connected, after processing for the analysis of image data that described image capture device is gathered, be converted to optical measurement data and be sent to described data processing module.
A kind of maintaining method of LCD double-side display device, for being safeguarded comprising the described LCD double-side display device of safeguarding communication interface, comprises following steps:
A1, control described LCD double-side display device and show image according to specific mode; Wherein, described specific mode is the static display image mode;
A2, measure the optical data of described LCD double-side display device, obtain measurement data;
The status data of A3, the described measurement data of analytical calculation and described LCD double-side display device, generate service data; Wherein, described service data is maintenance control data or LED-backlit correction data; Described status data comprises the identification code data of the identification code data of described LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit
A4, by described service data, safeguard that by described communication interface is sent to described LCD double-side display device;
A5, described LCD double-side display device, according to described service data, carry out self and adjust.
An example is, be applied to there is main frame, in the maintenance system of optical detection apparatus and described LCD double-side display device, before steps A 1, also carry out following steps: in described main frame, described LCD double-side display device and described optical detection apparatus, arbitrary equipment sends " test is prepared " order data signal, after all the other 2 equipment send response signal, control described maintenance system and enter service mode, execution step A1.
By adopting LCD double-side display device of the present invention and maintenance system and maintaining method, without tearing machine open, can complete the maintenance work of LED-backlit unit, solved in the LCD double-side display device, " instant characteristic " difference and " attenuation characteristic " difference that in the LED-backlit unit, the LED element exists, cause output optical parametric offset issue, improved maintenance efficiency and the quality of LCD, provide cost savings.
The accompanying drawing explanation
The LCD double-side display device schematic diagram that Fig. 1 is the embodiment of the present invention 1;
The LCD double-side display device schematic diagram that Fig. 2 is the embodiment of the present invention 2;
The LCD double-side display device schematic diagram that Fig. 3 is the embodiment of the present invention 3;
The maintenance system schematic diagram that Fig. 4 is the embodiment of the present invention 4
The main frame schematic diagram that Fig. 5 is the embodiment of the present invention 5;
The main frame schematic diagram that Fig. 6 is the embodiment of the present invention 6;
The main frame schematic diagram that Fig. 7 is the embodiment of the present invention 7;
The main frame schematic diagram that Fig. 8 is the embodiment of the present invention 8.
Embodiment
With reference to Fig. 1, a kind of LCD double-side display device, described LCD double-side display device comprises a picture signal interface, user interface, one and safeguards communication interface 101, a unit and a LED-backlit control module, said modules is connected with a CPU (central processing unit) respectively; Wherein, describedly safeguard that communication interface 101, for receiving outside service data, is sent to described CPU (central processing unit), also for the status data by described CPU (central processing unit) LCD double-side display device, be transferred to outside; For example, be transferred to outside controller or main frame, or user terminal etc.; Described picture signal interface, for outside to LCD double-side display device input picture display; Described user interface, for being controlled the LCD double-side display device.
Described CPU (central processing unit), for the described service data of analytical calculation, control described LED-backlit control module according to result of calculation, to drive described LED-backlit unit;
Wherein, described service data is maintenance control data or LED-backlit correction data; Described status data comprises the identification code data of the identification code data of described each display screen of LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit.
Also comprise the first liquid crystal cells and the second liquid crystal cells that are connected with described unit respectively, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit provides back light for described the first liquid crystal cells and described the second liquid crystal cells simultaneously.This LCD dual-face display apparatus contains 2 display screens, can show a kind of image information simultaneously.
In the present embodiment, describedly safeguard that communication interface 101 can be the USB serial communication interface.It may be noted that, safeguard described in the present embodiment that communication interface 101 is for USB interface, and should not be construed as the restriction to application.
By adopting the LCD double-side display device in this enforcement, without tearing machine open, can complete in the use procedure of LCD double-side display device, " instant characteristic " difference and " attenuation characteristic " difference due to LED in the LED-backlit unit, cause output optical parametric offset issue, improved the effect and quality of safeguarding, provided cost savings.
Embodiment 2
With reference to Fig. 2, the present embodiment is on the basis of embodiment 1, described LCD double-side display device comprises two picture signal interfaces, two user interfaces, two and safeguards communication interface, first safeguard that communication interface 101 and second safeguards communication interface 102, two units and two LED-backlit control modules, said modules is connected with a CPU (central processing unit) respectively;
Also comprise the first liquid crystal cells be connected with the first unit, the first LED-backlit unit be connected with the first LED-backlit control module, wherein said the first LED-backlit unit provides back light for described the first liquid crystal cells;
In addition, also comprise the second liquid crystal cells be connected with the second unit, the second LED-backlit unit be connected with the second LED-backlit control module, wherein said the second LED-backlit unit provides back light for described the second liquid crystal cells.
In this embodiment, the LCD dual-face display apparatus shares a CPU (central processing unit), can, according to client's demand, show image of the same race or show image not of the same race.Certainly, this LCD dual-face display apparatus can also share one and safeguard communication interface, and this safeguards that communication interface can be wireless communication interface, for example: be infrared communication interface or bluetooth communication interface.
All the other are similar to embodiment 1 principle, repeat no more herein.
Adopt the scheme of the present embodiment, can carry out alternately, having strengthened convenience with this LCD dual-face display apparatus easily by wireless communication mode.
Embodiment 3
With reference to Fig. 3, the present embodiment is on the basis of embodiment 2, contain 2 CPU (central processing unit), i.e. the first CPU (central processing unit) and the second CPU (central processing unit), be that described LCD double-side display device comprises two groups of display device, every group of display device all comprises a picture signal interface, user interface, one and safeguards communication interface, a unit and a LED-backlit control module, and said modules is connected with a CPU (central processing unit) respectively; Also comprise the liquid crystal cells be connected with described unit, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit is described liquid crystal cells back light.
All the other are similar to embodiment 2 principles, repeat no more herein.
Adopt the scheme of the present embodiment, can improve the arithmetic speed of LCD dual-face display apparatus, accelerate communication interface and outside interaction process speed.
Embodiment 4
With reference to Fig. 4 and Fig. 5, a kind of maintenance system of LCD double-side display device, for the maintenance of the various embodiments described above LCD double-side display device, described maintenance system comprises main frame and display screen checkout equipment.
Described LCD double-side display device contains one while safeguarding communication interface, and described main frame safeguards that with this communication interface is connected, for obtaining the status data of described LCD double-side display device;
Perhaps, described LCD double-side display device contains two while safeguarding communication interface, and described main frame safeguards that with two communication interface is connected respectively, for obtaining the status data of described each display screen of LCD double-side display device;
Described display screen checkout equipment, be connected with described main frame, for measuring the optical characteristics of described each display screen of LCD double-side display device, and the measurement data obtained sent to main frame; For example, described display screen checkout equipment is optical detection apparatus; Example is more specifically, and described display screen checkout equipment is photometer.
Described main frame, also for the described status data of analytical calculation and described measurement data, generate service data, be sent to described LCD double-side display device, wherein, described status data comprises the identification code data of the identification code data of described LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit; Described measurement data comprises brightness data and the color data of LCD double-side display device; Described service data is maintenance control data or LED-backlit correction data.
In addition, described main frame comprises the first communication interface, the second communication interface, communication control module and data processing module; For example, above-mentioned all communication interfaces are all used the bluetooth communication interface, adopt wireless transmission, it should be noted that, herein and should not be construed as limitation of the present invention.
Described the first communication interface 103, be connected with the communication interface of respectively safeguarding of described LCD display device; Be used for and described LCD display device bidirectional data interaction, mutual letter data is sent to described communication control module.
Described the second communication interface 202, with described photometric communication interface 201, be connected, described main frame is by described the second communication interface 202, be connected to described photometric communication interface 201, thereby realized main frame and described photometric both-way communication, measurement data has been sent to described communication control module.
Described communication control module, for controlling the optical characteristics data of the described LCD double-side display device of described photometer measurement, and be sent to described data processing module by the measurement data of acquisition; And described communication control module, also be sent to data processing module for the described status data by obtaining.
Described data processing module, for according to described measurement data and described status data, calculate by analysis, generates maintenance control data and LED-backlit unit correction data, and be sent to described communication control module.
Adopt the maintenance system in the present embodiment, can field maintemance LCD double-side display device, and without tearing machine open, can complete fast detection, maintenance to the LCD double-side display device, solved in the LCD double-side display device, " instant characteristic " difference and " attenuation characteristic " difference that in the LED-backlit unit, the LED element exists, cause output optical parametric offset issue.
Embodiment 5
With reference to Fig. 4 and Fig. 6, the present embodiment is on the basis of embodiment 4, and described display screen checkout equipment is image capture device, is specially camera.Described main frame also contains image analysis module, with described communication control module, is connected, and after processing for the analysis of image data that described image capture device is gathered, is converted to optical measurement data and is sent to described data processing module.
In the present embodiment, all devices communication interface can all adopt the USB communication interface.
All the other are identical with embodiment 4 principles, do not repeat them here.
Adopt the maintenance system in the present embodiment, can pass through image capture device, i.e. camera, gather the image information of display screen, and, after processing by described image analysis module, be sent to described communication control module, can extract more easily the information of display screen.
Embodiment 6
With reference to Fig. 4 and Fig. 7, the present embodiment is on the basis of embodiment 4, described main frame also contains the image control mold, with described communication control module, be connected, and be connected with described communication control module bidirectional data exchange, show image for controlling described LCD display device according to specific mode, wherein, described specific mode is static display image.
In the present embodiment, static display image refers to and shows static redness, blueness, green or the image such as white.
In addition, in the present embodiment, all devices communication interface all adopts the infrared communication interface, and the display screen checkout equipment is optical measuring apparatus, is specially radiometer.All the other are identical with embodiment 4 principles, do not repeat them here.
Adopt the maintenance system in the present embodiment, can pass through the image control mold, convert different image datas, by described optical detection apparatus, measure accurately the demonstration situation of LCD double-side display device under various states, the accuracy that has improved measurement data.
Embodiment 7
With reference to Fig. 4 and Fig. 8, the present embodiment is on the basis of embodiment 5, described main frame contains the image control mold and image analysis module simultaneously, wherein said the image control mold, with described communication control module, be connected, and, with described communication control module both-way communication, for controlling described LCD double-side display device, according to specific mode, show image.Described specific mode is static display image.Described static display image refers to and shows static redness, blueness, green or the image such as white.For the screen data of the described LCD double-side display device of conjunction measuring, wherein, the display screen checkout equipment is image capture device, is specially video camera.All the other are identical with embodiment 5 principles, do not repeat them here.
Adopt the maintenance system in the present embodiment, can be by the cooperation of described image control and described image analysis module, gather the static display image of described LCD double-side display device, can measure more accurately the optical characteristics of LCD double-side display device, improve the degree of accuracy of measurement data, thereby reach better maintenance effects.
Embodiment 8
A kind of maintaining method of LCD double-side display device, for being safeguarded comprising the described LCD double-side display device of safeguarding communication interface, it comprises following steps:
A1, control described LCD double-side display device and show image according to specific mode; For example, described specific mode is static display pattern mode.Perhaps, image that described specific mode is JPG form, GIF form or FLASH form etc.
A2, measure the optical data of described LCD double-side display device, obtain measurement data; This step can adopt optical instrument, and for example photometer, measured.
The status data of A3, the described measurement data of analytical calculation and described LCD double-side display device, generate service data; Wherein, described service data is maintenance control data or LED-backlit correction data; Described status data comprises the identification code data of the identification code data of described LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit.For example, carry out analytical calculation by computing machine by analysis module or statistical module.
A4, by described service data, safeguard that by described communication interface is sent to described LCD double-side display device; Describedly safeguard that communication interface can be USB interface, now, can adopt the USB transmission mode, by described service data, by described, safeguard that communication interface is sent to described LCD display device.
A5, described LCD double-side display device, according to described service data, carry out self and adjust.For example, described LCD display device is adjusted the gray scale demonstration of self.
In addition, the described maintaining method of the present embodiment can be applicable to have main frame, in the maintenance system of optical detection apparatus and described LCD double-side display device, now, before steps A 1, also carry out following steps: in described main frame, described LCD double-side display device and described optical detection apparatus, arbitrary equipment sends " test is prepared " order data signal, after all the other 2 equipment send response signal, control described maintenance system and enter service mode, execution step A1.For example, described LCD double-side display device sends " test is prepared " order data signal, after described main frame and described optical detection apparatus receive " test is prepared " order data signal, send response signal, now, control described maintenance system and enter service mode, execution step A1.
Adopt the present embodiment, can under the state of not tearing machine open, complete fast the maintenance to the LCD double-side display device, saved time and maintenance cost.
By above embodiment, the present invention has been carried out to further announcement, but scope of the present invention is not limited to this, under the condition that does not depart from the present invention's design, the similar or equivalent element that above each element can be understood with affiliated technical field personnel is replaced.
Claims (13)
1. a LCD double-side display device, is characterized in that, comprises picture signal interface, user interface, unit, at least 2 liquid crystal cells, CPU (central processing unit), LED-backlit control module, LED-backlit unit and safeguard communication interface;
Describedly safeguard that communication interface is connected with described CPU (central processing unit), for receiving outside service data, be sent to described CPU (central processing unit), also for the status data by described each display screen of CPU (central processing unit) LCD double-side display device, be transferred to outside;
Described CPU (central processing unit) arranges computing module and control module, described computing module is for the described service data of analytical calculation, result of calculation is sent to described control module, described control module is for controlling described LED-backlit control module according to described result of calculation, to drive described LED-backlit unit;
Wherein, described service data is maintenance control data or LED-backlit correction data; The status data of described each display screen comprises the identification code data of the identification code data of described LCD double-side display device, described LED-backlit unit and the optical data of described LED-backlit unit.
2. LCD double-side display device according to claim 1, it is characterized in that, described LCD double-side display device comprises following assembly: only picture signal interface, only user interface, only one safeguard communication interface, only a unit reaches an only LED-backlit control module, and above-mentioned each assembly is connected with a CPU (central processing unit) respectively;
Described LCD double-side display device also comprises the first liquid crystal cells and the second liquid crystal cells be connected with described unit respectively, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit provides back light for described the first liquid crystal cells and described the second liquid crystal cells simultaneously.
3. LCD double-side display device according to claim 1, it is characterized in that, described LCD double-side display device comprises following assembly: two picture signal interfaces, two user interfaces, two are safeguarded communication interface, two units and two LED-backlit control modules, above-mentioned each assembly is connected with a CPU (central processing unit) respectively;
Described LCD double-side display device also comprises the first liquid crystal cells be connected with the first unit, the first LED-backlit unit be connected with the first LED-backlit control module, and wherein said the first LED-backlit unit provides back light for described the first liquid crystal cells;
Described LCD double-side display device also comprises the second liquid crystal cells be connected with the second unit, the second LED-backlit unit be connected with the second LED-backlit control module, and wherein said the second LED-backlit unit provides back light for described the second liquid crystal cells.
4. LCD double-side display device according to claim 1, it is characterized in that, described LCD double-side display device comprises two groups of display device, every group of display device all comprises a picture signal interface, user interface, one and safeguards communication interface, a unit and a LED-backlit control module, above-mentioned each assembly is connected with a CPU (central processing unit) respectively; Also comprise the liquid crystal cells be connected with described unit, and the LED-backlit unit be connected with described LED-backlit control module; Wherein said LED-backlit unit is described liquid crystal cells back light.
5. according to the arbitrary described LCD double-side display device of claim 1 to 4, it is characterized in that, describedly safeguard that communication interface is wireless communication interface or wire communication interface;
Wherein, described wireless communication interface is infrared communication interface or bluetooth communication interface; Perhaps, described wire communication interface is serial communication interface or parallel communication interface.
6. the maintenance system of a LCD double-side display device, is characterized in that, at least one communication interface of safeguarding that comprises main frame, display screen checkout equipment and be arranged on described LCD double-side display device;
Described main frame safeguards that with described communication interface is connected, and for by the described communication interface of safeguarding, receives outside service data, and the status data of each display screen of LCD double-side display device;
Described display screen checkout equipment, be connected with described main frame, for measuring respectively optics or the view data of described each display screen of LCD double-side display device, and the measurement data obtained sent to respectively to main frame;
Described main frame, also for the described status data of analytical calculation and described measurement data, generate service data, is sent to described LCD double-side display device;
Wherein, described status data comprises the identification code data of described each display screen of LCD double-side display device, the identification code data of each LED-backlit unit and the optical data of each LED-backlit unit; Described measurement data comprises brightness data and the color data of each display screen of LCD double-side display device; Described service data is maintenance control data or LED-backlit correction data.
7. maintenance system according to claim 6, is characterized in that, described main frame comprises the first communication interface, the second communication interface, communication control module and data processing module;
Described the first communication interface, safeguard that with described communication interface is connected, and for the control according to described communication control module, between described main frame and described LCD double-side display device, carries out two-way information interaction;
Described the second communication interface, be connected with the communication interface of described display screen checkout equipment, for described display screen checkout equipment both-way communication, receive described measurement data, be sent to described communication control module;
Described communication control module, measure the screen data of described LCD double-side display device for controlling described display screen checkout equipment, and the measurement data that described display screen checkout equipment is measured is sent to described data processing module;
Described communication control module, also be sent to described data processing module for the described status data that will obtain by described the first communication interface;
Described data processing module, for according to described measurement data and described status data, calculate by analysis, generates described service data, and be sent to described communication control module.
8. maintenance system according to claim 7, is characterized in that, described maintenance system also contains the image control mold, with described communication control module bidirectional data exchange, for controlling described LCD double-side display device, according to specific mode, shows image.
9. according to the arbitrary described maintenance system of claim 6 to 8, it is characterized in that, described display screen checkout equipment is optical detection apparatus or image capture device.
10. according to the arbitrary described maintenance system of claim 6 to 8, it is characterized in that, described display screen checkout equipment is optical detection apparatus, and described optical detection apparatus is radiometer, photometer, camera, tristimulus colour meter or spectroradiometer; Described image capture device is camera or video camera.
11. according to the arbitrary described maintenance system of claim 6 to 8, it is characterized in that, described display screen checkout equipment is image capture device; And described maintenance system also comprises image analysis module, with described communication control module, be connected, after processing for the analysis of image data that described image capture device is gathered, be converted to optical measurement data and be sent to described data processing module.
12. the maintaining method of a LCD double-side display device, for being safeguarded comprising the described LCD double-side display device of safeguarding communication interface, is characterized in that, comprises following steps:
A1, control described LCD double-side display device and show image according to specific mode; Wherein, described specific mode is the static display image mode;
A2, measure the optical data of described LCD double-side display device, obtain measurement data;
The status data of A3, the described measurement data of analytical calculation and described LCD double-side display device, generate service data; Wherein, described service data is maintenance control data or LED-backlit correction data; Described status data comprises the identification code data of described LCD double-side display device, the identification code data of LED-backlit unit and the optical data of LED-backlit unit
A4, by described service data, safeguard that by described communication interface is sent to described LCD double-side display device;
A5, described LCD double-side display device, according to described service data, carry out self and adjust.
13. maintaining method according to claim 12, it is characterized in that, be applied to there is main frame, in the maintenance system of optical detection apparatus and described LCD double-side display device, before steps A 1, also carry out following steps: in described main frame, described LCD double-side display device and described optical detection apparatus, arbitrary equipment sends " test is prepared " order data signal, after all the other 2 equipment send response signal, control described maintenance system and enter service mode, execution step A1.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007271806A (en) * | 2006-03-30 | 2007-10-18 | Casio Comput Co Ltd | Display device and maintaining method for display device |
| CN101414437A (en) * | 2007-10-19 | 2009-04-22 | 青岛海信电器股份有限公司 | Liquid crystal display method and liquid crystal display device |
| CN201233712Y (en) * | 2008-07-09 | 2009-05-06 | 北京巨数数字技术开发有限公司 | LCD device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007271806A (en) * | 2006-03-30 | 2007-10-18 | Casio Comput Co Ltd | Display device and maintaining method for display device |
| CN101414437A (en) * | 2007-10-19 | 2009-04-22 | 青岛海信电器股份有限公司 | Liquid crystal display method and liquid crystal display device |
| CN201233712Y (en) * | 2008-07-09 | 2009-05-06 | 北京巨数数字技术开发有限公司 | LCD device |
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