CN102737568A - Method and apparatus for testing scanning backlight liquid crystal device - Google Patents
Method and apparatus for testing scanning backlight liquid crystal device Download PDFInfo
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- CN102737568A CN102737568A CN2011100805577A CN201110080557A CN102737568A CN 102737568 A CN102737568 A CN 102737568A CN 2011100805577 A CN2011100805577 A CN 2011100805577A CN 201110080557 A CN201110080557 A CN 201110080557A CN 102737568 A CN102737568 A CN 102737568A
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Abstract
The embodiment of the invention disclose a method and an apparatus for testing a scanning backlight liquid crystal device. The method comprises the following steps: collecting continuous optical signals of each test point in each scanning area of the scanning backlight liquid crystal device; transforming the continuous optical signals of each test point to continuous voltage signals; generating a moving picture response curve (MPRC) of each test point according to the continuous voltage signals; and obtaining an evaluation result of the scanning backlight liquid crystal device according to differences between the MPRC and a standard curve. The method and the apparatus are suitable for testing and evaluating the scanning backlight liquid crystal device.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of method of testing of scanning backlight liquid-crystal apparatus and device.
Background technology
At present, be that LCD TV of new generation backlight just progressively enters into market with LED, how to use each item performance of LED to become increasingly serious problem.The scanning backlight liquid-crystal apparatus has made full use of the high response speed of LED, with the timing coordination of lighting sequential and liquid crystal display of LED-backlit, thereby reaches the conditions of streaking that improves liquid crystal display, the purpose that improves liquid crystal response speed.
The scanning backlight liquid-crystal apparatus can improve LCRC (the Liquid Crystal Response Curve of liquid-crystal apparatus to a certain extent; The liquid crystal response curve) and MPRC (Moving Picture Response Curve; The moving image response curve) consistance, the image quality of motion picture improved, factor all has relation but the degree of improving and the scanning area number, scanning sequence backlight and the liquid crystal display sequential that adopt scanning backlight be synchronous etc.Therefore, the image quality quality of different scanning backlight liquid-crystal apparatus is also different.
For carrying out the scanning backlight liquid-crystal apparatus that 3D shows, the image quality of requirement is higher, and the image quality quality of different scanning backlight liquid-crystal apparatus is different, and prior art can't confirm whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display.
Summary of the invention
Embodiments of the invention provide a kind of method of testing and device of scanning backlight liquid-crystal apparatus, can test and estimate the image quality quality of scanning backlight liquid-crystal apparatus, to confirm whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display.
The technical scheme that the embodiment of the invention adopts is:
A kind of method of testing of scanning backlight liquid-crystal apparatus comprises:
Gather the continuous light signal of each test point in each scanning area of said scanning backlight liquid-crystal apparatus;
With the continuous light conversion of signals of said each test point is the continuous voltage signal;
Generate the MPRC of each test point according to said continuous voltage signal;
Obtain evaluation result according to the difference between said MPRC and the typical curve to said scanning backlight liquid-crystal apparatus.
A kind of proving installation of scanning backlight liquid-crystal apparatus comprises:
Acquisition module is used for gathering the continuous light signal of each each test point of scanning area of said scanning backlight liquid-crystal apparatus;
Modular converter, the continuous light conversion of signals that is used for said each test point is the continuous voltage signal;
Generation module is used for the MPRC according to said each test point of continuous voltage signal generation;
Acquisition module is used for obtaining the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.
The method of testing and the device of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides; With the continuous light conversion of signals of each test point in each scanning area of the scanning backlight liquid-crystal apparatus that collects is the continuous voltage signal; MPRC according to said each test point of continuous voltage signal generation obtains the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.Compared with prior art; The embodiment of the invention can utilize MPRC that the image quality quality of scanning backlight liquid-crystal apparatus is tested and estimated; With other compared with parameters of scanning backlight liquid-crystal apparatus, MPRC can comparatively directly reflect the visual effect of human eye to image, thereby can reflect to a certain extent whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display; Method of testing is simple, and evaluation result is more accurate.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The method flow diagram that Fig. 1 provides for the embodiment of the invention one;
The method flow diagram that Fig. 2 provides for the embodiment of the invention two;
The apparatus structure synoptic diagram that Fig. 3, Fig. 4 provide for the embodiment of the invention three.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
For the advantage that makes technical scheme of the present invention is clearer, the present invention is elaborated below in conjunction with accompanying drawing and embodiment.
Embodiment one
Present embodiment provides a kind of method of testing of scanning backlight liquid-crystal apparatus, and is as shown in Figure 1, and said method comprises:
101, the continuous light signal of each test point in each scanning area of the said scanning backlight liquid-crystal apparatus of collection.
102, the continuous light conversion of signals with said each test point is the continuous voltage signal.
103, generate the MPRC of each test point according to said continuous voltage signal.
104, obtain evaluation result according to the difference between said MPRC and the typical curve to said scanning backlight liquid-crystal apparatus.
The method of testing of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides; With the continuous light conversion of signals of each test point in each scanning area of the scanning backlight liquid-crystal apparatus that collects is the continuous voltage signal; MPRC according to said each test point of continuous voltage signal generation obtains the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.Compared with prior art; The embodiment of the invention can utilize MPRC that the image quality quality of scanning backlight liquid-crystal apparatus is tested and estimated; With other compared with parameters of scanning backlight liquid-crystal apparatus, MPRC can comparatively directly reflect the visual effect of human eye to image, thereby can reflect to a certain extent whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display; Method of testing is simple, and evaluation result is more accurate.
Embodiment two
Present embodiment provides a kind of method of testing of scanning backlight liquid-crystal apparatus, and is as shown in Figure 2, and said method comprises:
201, photoelectric probe is gathered the continuous light signal of each test point in each scanning area of said scanning backlight liquid-crystal apparatus.
In the present embodiment, the number of the scanning area of said scanning backlight liquid-crystal apparatus is 8, and each scanning area is set 3 test points, and then said scanning backlight liquid-crystal apparatus has 24 test points.
Certainly, in practical application, can set the position and the number of the test point of each scanning area according to the consideration of accuracy requirement and actual computation ability.
202, said photoelectric probe is the continuous voltage signal with the continuous light conversion of signals of said each test point.
Owing to adopt scanning backlight, the light and shade of the light of the display screen of liquid-crystal apparatus changes makes that photoelectric probe can be the continuous voltage signal with the continuous light conversion of signals.
203, said photoelectric probe quantizes said continuous voltage signal.
Particularly, can adopt analog to digital conversion circuit that said continuous voltage signal is quantized, analog-digital conversion circuit as described can be a part of circuit of said photoelectric probe, but is not limited only to this.
Wherein, the photoelectric probe among the step 201-203 also can be substituted by other devices with same or similar function.
204, the continuous voltage signal of said photoelectric probe after with said quantification sends to data processing equipment.
Wherein, said data processing equipment can be PC, but is not limited only to this.
205, said data processing equipment generates the LCRC of each test point according to said continuous voltage signal.
206, to be the unit window with the frame period carry out the window integration to the LCRC of said each test point with said data processing equipment, generates the MPRC of each test point.
Because said scanning backlight liquid-crystal apparatus has 24 test points, therefore can obtain 24 MPRC.
Optional, also can adopt additive method to generate MPRC, for example: adopt the specialized high-speed camera to take, obtain having the image of smeared out boundary, obtain MPRC indirectly through measuring blurred width.
207, said data processing equipment compares said MPRC and typical curve, obtains the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.
Wherein, said typical curve can be the curve that in said data processing equipment, is provided with in advance, and this curve can comprise certain unsteady constant interval; Perhaps curve for the MPRC of said each test point being carried out obtain after average is handled.
Particularly, said data processing equipment quantizes to judge according to the clutch degree of each point on the distance between said MPRC and the said typical curve and said MPRC and the said typical curve, obtains the evaluation result to said scanning backlight liquid-crystal apparatus.
Wherein, said evaluation result comprises two aspects:
(1) MPRC envelope basically identical whether, evaluation result is 1 or 0, wherein, 1 is expressed as basically identical; 0 is expressed as inconsistently, has the point of sudden change.
(2) number of the point of the sudden change of MPRC envelope, number curve less reaches unanimity more.
Particularly, preestablished the MPRC evaluation criterion in the said data processing equipment, for example: the preferred number of the point of the sudden change of the standard clutch degree of each point, MPRC envelope on the gauged distance between MPRC and the typical curve, said MPRC and the typical curve.In practical application; The preferred number of the point of the sudden change of the standard clutch degree of each point, MPRC envelope can be set according to the test of many times result on gauged distance between said MPRC and the typical curve, said MPRC and the typical curve, does not do concrete restriction here.
When certain scanning backlight liquid-crystal apparatus is tested and is estimated; Distance between MPRC and typical curve is greater than said gauged distance, and/or the clutch degree of each point is higher than said standard clutch degree on MPRC and the typical curve; And/or; The number of the point of the sudden change of MPRC envelope is during greater than said preferred number, and said data processing equipment is inconsistent to the evaluation result of said MPRC envelope, and this scanning backlight liquid-crystal apparatus is not suitable for the 3D liquid crystal display; Otherwise said data processing equipment is consistent to the evaluation result of said MPRC envelope, and this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display.
The method of testing of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides; With the continuous light conversion of signals of each test point in each scanning area of the scanning backlight liquid-crystal apparatus that collects is the continuous voltage signal; LCRC and MPRC according to said each test point of continuous voltage signal generation after quantizing obtain the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.Compared with prior art; The embodiment of the invention can utilize MPRC that the image quality quality of scanning backlight liquid-crystal apparatus is tested and estimated; With other compared with parameters of scanning backlight liquid-crystal apparatus, MPRC can comparatively directly reflect the visual effect of human eye to image, thereby can reflect to a certain extent whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display; Method of testing is simple, and evaluation result is more accurate.
Embodiment three
Present embodiment provides a kind of proving installation of scanning backlight liquid-crystal apparatus, and is as shown in Figure 3, and said device comprises:
Further, as shown in Figure 4, said device can also comprise:
Further, as shown in Figure 4, said generation module 33 can comprise:
Further, said acquisition module 34 specifically is used for said MPRC and typical curve are compared, and obtains the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve;
Wherein, said typical curve is preset curve, perhaps carries out the curve that obtains after average is handled for the MPRC to said each test point.
Further; Said acquisition module 34; Specifically be used for quantizing to judge, obtain evaluation result said scanning backlight liquid-crystal apparatus according to the clutch degree of each point on the distance between said MPRC and the said typical curve and said MPRC and the said typical curve.
The proving installation of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides; With the continuous light conversion of signals of each test point in each scanning area of the scanning backlight liquid-crystal apparatus that collects is the continuous voltage signal; LCRC and MPRC according to said each test point of continuous voltage signal generation after quantizing obtain the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.Compared with prior art; The embodiment of the invention can utilize MPRC that the image quality quality of scanning backlight liquid-crystal apparatus is tested and estimated; With other compared with parameters of scanning backlight liquid-crystal apparatus, MPRC can comparatively directly reflect the visual effect of human eye to image, thereby can reflect to a certain extent whether this scanning backlight liquid-crystal apparatus is applicable to the 3D liquid crystal display; Method of testing is simple, and evaluation result is more accurate.
The proving installation of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides can be realized the above-mentioned method embodiment that provides, and concrete function is realized seeing also the explanation among the method embodiment, repeats no more at this.The method of testing of the scanning backlight liquid-crystal apparatus that the embodiment of the invention provides and device go for the scanning backlight liquid-crystal apparatus is tested and estimated, but are not limited only to this.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above; Be merely embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. the method for testing of a scanning backlight liquid-crystal apparatus is characterized in that, comprising:
Gather the continuous light signal of each test point in each scanning area of said scanning backlight liquid-crystal apparatus;
With the continuous light conversion of signals of said each test point is the continuous voltage signal;
Generate the moving image response curve MPRC of each test point according to said continuous voltage signal;
Obtain evaluation result according to the difference between said MPRC and the typical curve to said scanning backlight liquid-crystal apparatus.
2. method according to claim 1 is characterized in that, after said continuous light conversion of signals with said each test point is the continuous voltage signal, also comprises:
Said continuous voltage signal is quantized.
3. method according to claim 1 is characterized in that, said moving image response curve MPRC according to said each test point of continuous voltage signal generation comprises:
Generate the liquid crystal response curve LCRC of each test point according to said continuous voltage signal;
Being the unit window with the frame period carries out the window integration to the LCRC of said each test point, generates the MPRC of each test point.
4. according to claim 1 or 3 described methods, it is characterized in that the said evaluation result of obtaining said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve comprises:
Said MPRC and typical curve are compared, obtain evaluation result said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve;
Wherein, said typical curve is preset curve, perhaps carries out the curve that obtains after average is handled for the MPRC to said each test point.
5. method according to claim 4 is characterized in that, said said MPRC and typical curve is compared, and the evaluation result of obtaining said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve comprises:
Clutch degree according to each point on the distance between said MPRC and the said typical curve and said MPRC and the said typical curve quantizes to judge, obtains the evaluation result to said scanning backlight liquid-crystal apparatus.
6. the proving installation of a scanning backlight liquid-crystal apparatus is characterized in that, comprising:
Acquisition module is used for gathering the continuous light signal of each each test point of scanning area of said scanning backlight liquid-crystal apparatus;
Modular converter, the continuous light conversion of signals that is used for said each test point is the continuous voltage signal;
Generation module is used for the moving image response curve MPRC according to said each test point of continuous voltage signal generation;
Acquisition module is used for obtaining the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve.
7. device according to claim 6 is characterized in that, also comprises:
Quantization modules, the continuous voltage signal that is used for said modular converter is converted to quantizes.
8. device according to claim 6 is characterized in that, said generation module comprises:
First generation unit is used for the liquid crystal response curve LCRC according to said each test point of continuous voltage signal generation;
Second generation unit is used for the frame period that to be the unit window carry out the window integration to the LCRC of said each test point, generates the MPRC of each test point.
9. according to claim 6 or 8 described devices; It is characterized in that; Said acquisition module specifically is used for said MPRC and typical curve are compared, and obtains the evaluation result to said scanning backlight liquid-crystal apparatus according to the difference between said MPRC and the typical curve;
Wherein, said typical curve is preset curve, perhaps carries out the curve that obtains after average is handled for the MPRC to said each test point.
10. device according to claim 9; It is characterized in that; Said acquisition module; Specifically be used for quantizing to judge, obtain evaluation result said scanning backlight liquid-crystal apparatus according to the clutch degree of each point on the distance between said MPRC and the said typical curve and said MPRC and the said typical curve.
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Application publication date: 20121017 |