CN101196623A - Device and method for detecting screen chromatic characteristics - Google Patents

Device and method for detecting screen chromatic characteristics Download PDF

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Publication number
CN101196623A
CN101196623A CNA2006101684333A CN200610168433A CN101196623A CN 101196623 A CN101196623 A CN 101196623A CN A2006101684333 A CNA2006101684333 A CN A2006101684333A CN 200610168433 A CN200610168433 A CN 200610168433A CN 101196623 A CN101196623 A CN 101196623A
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display
signal
chromatic characteristics
detecting
detection
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CNA2006101684333A
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Chinese (zh)
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庄淑雯
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Inventec Corp
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Inventec Corp
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Priority to CNA2006101684333A priority Critical patent/CN101196623A/en
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Abstract

The invention discloses a device for detecting the characteristics of the screen colors, which comprises a processing unit, a unit of analysis, a signal generator and a signal patchpanel. The processing unit is used for sending the testing data; the unit of analysis is used for detecting the display image of the display and output the detecting data to the processing unit according to the display image for analysis; the signal generator is used for receiving the testing data and output the corresponding detecting signal; the signal patchpanel is used for receiving the detecting signal and transmitting to the display after converting to the video signal. When the display shows the testing image, the processing unit will capture the testing image through the unit of analysis. The processing unit analyzes the color characteristics of the display and judges if the display is in accordance with the predefined specification based on the analysis result.

Description

Detect the screen chromatic characteristics devices and methods therefor
Technical field
The present invention is relevant for a kind of detection screen chromatic characteristics device, and is particularly to a kind of chromatic characteristic device that detects display panels.
Background technology
Generally speaking, the major product of flat-panel monitor is Thin Film Transistor-LCD (Thin FilmTransistor Liquid Crystal Display, TFT-LCD), because the result of improvement of Manufacturing Technology and research and development, it tends to bigger size and higher resolution.Because the application extension of TFT-LCD is to large-scale monitor, it substitutes cathode-ray tube (CRT) (Cathode Ray Tube, CRT) display fast.Therefore, TFT-LCD becomes more and more important in the status of display industry.In recent years, display is more significantly as the video information medium.
Panel charging detection mode for LCD screen is to take manual type to detect at present, but manual detection can only be judged the whole picture quality of this display panels at more conspicuous abnormal show, for example say unusual, bright dim spot of color lump or colourity inequality (mura) etc.But the detection for other optics fundamental characteristics of display panels with regard to the eyes of different people, all has difference more or less.So these optics fundamental characteristics often are difficult for detecting in order to uniform manually going.Wherein, the optics fundamental characteristics has generally included brightness (brightness), contrast (contrast), COLOR COMPOSITION THROUGH DISTRIBUTION (uniformity), colour gamut (gamut), crosstalk (crosstalk), flicker (flicker) and reaction time (response time) etc.Just be example with brightness, the westerner is slightly higher than the Asians for the reception degree of blue light, thus both read fortune with blue light the time, the brightness that the westerner felt is bright compared to the Asians.
For solving the problem of above-mentioned manual detection, adopt a kind of signal motherboard (mother board) to be linked to display panels in addition, send test event via control end, utilize the signal motherboard to export multiple different test event signal to display panels, detect the shown picture of display panels subsequently again.So the corresponding parameter adjustment difference that is subject between hardware and the software because of motherboard can affect indirectly optical characteristics, causes the optical characteristics distortion.Therefore fail the requirement of complete coincidence detection display panels.Except that above-mentioned signal motherboard, also has a kind of optical analyser that detects the chromatic characteristic of display.Optical analyser can provide comparatively various test item.
Summary of the invention
The invention provides a kind of detection screen chromatic characteristics device, in order to detect the chromatic characteristic of display.
A further object of the present invention provides a kind of method that detects screen chromatic characteristics, detects the chromatic characteristic of display picture.
The invention provides a kind of detection screen chromatic characteristics device, it is applicable to display, detects the screen chromatic characteristics device and comprises that processing unit is in order to send test data.Analytic unit, in order to the detecting display display frame, and according to the display frame output test data to processing unit, to analyze.Signal generator, the acceptance test data are also exported corresponding detection signal.Signals Transfer Board is sent to display in order to receive detection signal and to convert thereof into vision signal, so that display shows test pictures.When display showed test pictures, processing unit captured this test pictures by analytic unit, used the chromatic characteristic of analyzing this display, and judged according to this analysis result whether this display meets default specification.
From another viewpoint, the invention provides a kind of method that detects screen chromatic characteristics, comprise adapter unit is provided.Then transmit test signal to adapter unit, give screen and show test pictures to produce video data.To the zone of small part, and obtain detecting data in the detecting test pictures.At last, analyze detecting data, whether meet default specification with the decision screen.
According to the described detection screen chromatic characteristics of embodiments of the invention device and method, utilize the signal converting unit to transmit test signal, and the correspondence of acquisition screen show test pictures to screen.Analyze this and show that test pictures obtains detecting data, wherein detecting data comprises brightness value, contrast characteristic's value, colour gamut eigenwert, luminance uniformity eigenwert, the eigenwert of crosstalking, blinking characteristics value or reaction time eigenwert at least.If the detecting data of display meets when presetting specification, then detect by display.If this detecting data of display does not meet when presetting specification, then do not detect by display.
The present invention converts detecting data to meet display input signal because of adopting Signals Transfer Board, makes and can utilize lower cost to reach the chromatic characteristic analytical equipment and the method for display.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is for detecting the Organization Chart of screen chromatic characteristics device
Fig. 2 is for detecting the method flow diagram of screen chromatic characteristics.
Embodiment
The implementation of present embodiment for convenience of description makes that screen is a LCD.Fig. 1 is for detecting the Organization Chart of screen chromatic characteristics device.The device 100 that detects screen chromatic characteristics comprises processing unit 110, analytic unit 120, signal generator 130 and Signals Transfer Board 140.Processing unit 110 is responsible for sending test data to signal generator 130.Analytic unit 120 is responsible for the display frame of detecting display panels 150, and exports a detecting data to processing unit 110 according to display panels 150 shown pictures, uses and analyzes.
In the present embodiment, processing unit 110 can be notebook computer, PC or embedded system (Embedded System) etc., and the present invention does not impose any restrictions.In addition, analytic unit 120 can be color analyzer of the same colour.In the present embodiment, analytic unit 120 can link a plurality of probes 121, in order to detecting different display panels 150 blocks, and according to the display frame output test data to processing unit 110, to analyze.
Signal generator 130 acceptance test data also (for example produce simulating signal according to this test data, CVBS, S-VIDEO, YPbPr or VGA) or digital signal (for example, HDMI (High Definition MultimediaInterface) or DVI (Digital Visual Interface)) export corresponding detection signal.Signals Transfer Board 140 converts thereof into vision signal again and is sent to display panels 150 in order to receive detection signal and detection signal is done conversions such as DC-DC or AC-DC, so that display panels 150 shows pairing test pictures.
Wherein, vision signal can be done the output of corresponding signal format according to different demands.For example, when display is display panels 150, vision signal can be Low Voltage Differential Signal (Low VoltageDifferential Signaling, LVDS), Low Voltage Differential Signal is a kind of interface of high-speed transfer, its transmission clock pulse can reach more than the 1GHz, is higher than the liquid crystal display faceplate device of SVGA so be applicable to resolution.
In addition, because the voltage signal amplitude of oscillation of Low Voltage Differential Signal is lower, noise that is produced and power dissipation are also lower.It should be noted that, analytic unit 120, signal generator 130 are the essential instrument of manufacturing line of general panel factory or TV manufacturer, card extender 140 then can design voluntarily according to different panels, so reach more fast cheaply more than optical analyser on the tempo of development of hardware and the cost.
In the part of software, can be adjusted again at different test items according to the difference of display panels 150, make software can be applied to plurality of liquid crystals display panel 150.Can also do different combinations according to different processing units, for example, PC or notebook computer can be with application program control detection project and test datas; If embedded system can be designed to independently chip.
When display panels 150 shows test pictures, processing unit 110 captures test pictures by analytic unit 120, with the various chromatic characteristics of analyzing this display panels 150 (for example be brightness, contrast, colour gamut, luminance uniformity, crosstalk, flicker or reaction time), and judge according to its result whether this display panels 150 meets default specification.
Fig. 2 is for detecting the method flow diagram of screen chromatic characteristics.Following display will be an example with display panels 150, and embodiments of the present invention are described.For more clearly demonstrating the method that present embodiment detects screen chromatic characteristics, please also refer to Figure 1 and Figure 2.At first, when step S210, provide a display panels 150 to be measured.Next, send test datas (step 220) to the signal generator 130 by processing unit 110.
Signal generator 130 to Signals Transfer Board 140, wherein detects data according to corresponding simulating signal of this test data or digital signal (step 230) with the test data that receives and output test data.Subsequently, step 240 Signals Transfer Board 140 is according to the input demand of display panels 150, this detected data are done the DC-DC conversion or the AC-DC conversion exports display panels 150 to.
Step 250, when display panels 150 showed the display frame of corresponding test data, 120 of analytic units went to capture this display frame by a plurality of probes 121, and converted this display frame to detecting data and be sent to processing unit 110.For instance, detecting data is the brightness (brightness) according to display frame, contrast (contrast), COLOR COMPOSITION THROUGH DISTRIBUTION (uniformity), colour gamut (gamut), (crosstalk) crosstalks, flicker (flicker) and reaction time (response time) waits each color character, the action of analyzing, and analysis result is converged the color coordinate be made into CIE-1931, and (at this is the processing procedure of detecting data for convenience of description, but not only be confined to this a little eigenwerts and analytical approach thereof), and the respective seat scale value of exporting this CIE-1931 to processing unit 110 to analyze action.
At last, processing unit 110 carries out the comparison of corresponding preset value with detecting data, and judges whether this display panels 150 meets default specification (step 260).If comparison result meets default specification, this display panels 150 can allow shipment (step 261).If comparison result does not meet default specification, then this display panels 150 need be done again and detect or report for repairment (step 262).
In sum, analytic unit of the present invention and signal generator are the instrument of the general panel factory or the production line indispensability of TV manufacturer, and 140 of card extenders are according to 150 designs of different display panels.Make the vision signal of card extender 140 exportable other different-formats to display panels 150, for example, vision signal can be a little swing differential signal transmission (Reduced wing Differential Signaling, RSDS), or one transistor to transistor level (Transistor-Transistor Level, TTL).Thus, the cost of this device is more cheap compared to optical analyser.And, only need from processing unit, to revise default comparison specification for different liquid crystal panels, make that detecting the screen chromatic characteristics device can have more elasticity.In addition, present embodiment can also be applied to the detection of other displays, for example, and plasma display etc.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.

Claims (12)

1. one kind is detected the screen chromatic characteristics device, is applicable to and detects a display, and this detection screen chromatic characteristics device comprises:
One processing unit is in order to send a test data and to receive data;
At least one analytic unit in order to detecting a display frame of this display, and is exported a detecting data to this processing unit according to this display frame, to analyze;
One signal generator receives this test data and the corresponding detection signal of output; And
One Signals Transfer Board is sent to this display in order to receive this detection signal and to convert thereof into a vision signal, so that this display shows a test pictures,
Wherein, when this display showed this test pictures, this processing unit captured this test pictures by this analytic unit, to analyze the chromatic characteristic of this display.
2. detection screen chromatic characteristics device as claimed in claim 1, it is characterized in that this detecting data comprises a brightness value, a pair of than eigenwert, characteristic of field value of the same colour, a luminance uniformity eigenwert, crosstalk eigenwert, a blinking characteristics value or a reaction time eigenwert at least.
3. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, this detection signal is a simulating signal or a digital signal.
4. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, Signals Transfer Board is in order to simulate this detection signal to digital conversion or the conversion of digital logarithm word.
5. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, this processing unit is a PC, a notebook computer or an embedded system.
6. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that this vision signal is a Low Voltage Differential Signal.
7. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, this vision signal is a little swing differential signal transmission.
8. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, this vision signal is that a transistor is to transistor level.
9. detection screen chromatic characteristics device as claimed in claim 1 is characterized in that, this analytic unit is a color analyzer.
10. a method that detects screen chromatic characteristics is applicable to a display, and this method comprises the following steps:
One adapter unit is provided;
Transmit a test signal to this adapter unit, give this display and show a test pictures to produce a video data;
Detect in this test pictures zone, and obtain a detecting data to small part; And
Analyze this detecting data, whether meet a default specification to determine this display.
11., it is characterized in that whether this display meets default specification, comprises the following steps: as the described detection screen chromatic characteristics of Shen claim 10 method
If when this detecting data meets this default specification, then detect by display; And
If when this detecting data does not meet this default specification, then do not detect by display.
12. detection screen chromatic characteristics method as claimed in claim 10, it is characterized in that those detecting datas comprise a brightness value, a pair of than eigenwert, characteristic of field value of the same colour, a luminance uniformity eigenwert, crosstalk eigenwert, a blinking characteristics value or a reaction time eigenwert at least.
CNA2006101684333A 2006-12-06 2006-12-06 Device and method for detecting screen chromatic characteristics Pending CN101196623A (en)

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Application Number Priority Date Filing Date Title
CNA2006101684333A CN101196623A (en) 2006-12-06 2006-12-06 Device and method for detecting screen chromatic characteristics

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101739922B (en) * 2008-11-24 2011-09-14 英业达股份有限公司 System and method for detecting color data of display
CN103376577A (en) * 2013-07-03 2013-10-30 杨玉峰 Automatic test method and system for liquid crystal display panel with LVDS (low voltage differential signaling) interface
CN103376576A (en) * 2013-07-03 2013-10-30 杨玉峰 Automatic test method and system for liquid crystal display panel with 4k2k V-BY-ONE interface
CN103761934A (en) * 2014-01-20 2014-04-30 华映视讯（吴江）有限公司 Measurement system and method for built-in color style builder
CN105403381A (en) * 2015-11-26 2016-03-16 洛阳瑞光影视光电技术有限公司 Sdi signal generator
CN106097942A (en) * 2016-06-29 2016-11-09 昆山国显光电有限公司 OLED display screen lights test system and method
CN106710493A (en) * 2015-08-03 2017-05-24 冠捷投资有限公司 Method of measuring display device comprehensively
CN107450205A (en) * 2017-08-16 2017-12-08 深圳市易快来科技股份有限公司 A kind of LCM screens method of testing and its device
CN112860501A (en) * 2021-03-17 2021-05-28 惠州Tcl移动通信有限公司 Detection method, detection device, storage medium and mobile terminal

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101739922B (en) * 2008-11-24 2011-09-14 英业达股份有限公司 System and method for detecting color data of display
CN103376577A (en) * 2013-07-03 2013-10-30 杨玉峰 Automatic test method and system for liquid crystal display panel with LVDS (low voltage differential signaling) interface
CN103376576A (en) * 2013-07-03 2013-10-30 杨玉峰 Automatic test method and system for liquid crystal display panel with 4k2k V-BY-ONE interface
CN103376576B (en) * 2013-07-03 2016-03-02 杨玉峰 A kind of automatic test approach of 4K2K V-BY-ONE interface LCDs and system
CN103761934A (en) * 2014-01-20 2014-04-30 华映视讯（吴江）有限公司 Measurement system and method for built-in color style builder
CN106710493A (en) * 2015-08-03 2017-05-24 冠捷投资有限公司 Method of measuring display device comprehensively
CN105403381A (en) * 2015-11-26 2016-03-16 洛阳瑞光影视光电技术有限公司 Sdi signal generator
CN106097942A (en) * 2016-06-29 2016-11-09 昆山国显光电有限公司 OLED display screen lights test system and method
CN107450205A (en) * 2017-08-16 2017-12-08 深圳市易快来科技股份有限公司 A kind of LCM screens method of testing and its device
CN112860501A (en) * 2021-03-17 2021-05-28 惠州Tcl移动通信有限公司 Detection method, detection device, storage medium and mobile terminal
CN112860501B (en) * 2021-03-17 2022-10-21 惠州Tcl移动通信有限公司 Detection method, detection device, storage medium and mobile terminal

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