CN101105930A

CN101105930A - Display image regulation method

Info

Publication number: CN101105930A
Application number: CNA2007100901436A
Authority: CN
Inventors: 林正丰; 刘政良; 邓文凯
Original assignee: Giantplus Technology Co Ltd
Current assignee: Giantplus Technology Co Ltd
Priority date: 2007-04-16
Filing date: 2007-04-16
Publication date: 2008-01-16

Abstract

The invention relates to an image adjustment method of display, which firstly scans images of the display to obtain a coordinate with uneven brightness, then measures a color scale chroma value of the coordinate with the uneven brightness, and lastly adjusts the brightness of the images in the light of the comparison table of the coordinate and compensation value, so as to make the brightness even, lower manpower cost, and increase the speed of production lines.

Description

The image regulating method of display

Technical field:

The invention relates to a kind of image regulating method, it is the image regulating method that refers to display especially.

Background technology:

Press, scientific and technological now flourish, the information type of merchandize is weeded out the old and bring forth the new, and has satisfied the different demand of numerous common people.Early stage display is cathode-ray tube (CRT) (Cathode RayTube mostly, CRT) display, because it is bulky big with power consumption, and the radiant rays that is produced, the doubt of harm health is arranged for the user of long-time use display, therefore, display on the market gradually will be by LCD (LiquidCrystal Display, LCD) the old CRT monitor of replacement now.That LCD has is compact, low radiation and advantages such as power consumption is low, also so become the existing market main flow.

When general display dispatches from the factory, all must be through qualitative control, the quality of keyholed back plate display, to avoid display when the automated production, various problems appears because of various factors makes display, it similarly is the brightness irregularities of the picture of display, therefore on production line, all must use manpower that display is checked, only make the phenomenon of the picture generation brightness irregularities of display if the material of the assembly of display is different, at this moment, on production line, need by the QC personnel inhomogeneous and adjust at the picture brightness of display.

Moreover, because the processing procedure problem of the display panel of display, and the uneven situation of picture brightness of display panel that makes the display of each batch easily all comes across the fixed area of the display panel of display, so allow the QC personnel on the production line that each display is adjusted, so not only consume very much cost of labor and influence the speed of production line.

Therefore, how propose a kind of image regulating method of novel display at the problems referred to above, the picture that can improve display is in the phenomenon of fixed area generation brightness irregularities.

Summary of the invention:

One of purpose of the present invention is to provide a kind of image regulating method of display, and it is according to the scanning position table of comparisons and offset corresponding tables and adjust the image brilliance of display, and is even with the brightness of the picture that reaches display.

One of purpose of the present invention is to provide a kind of image regulating method of display, and it is according to the scanning position table of comparisons and offset corresponding tables and adjust the image brilliance of display, so can reduce personnel costs and promote the speed of production line.

The image regulating method of display of the present invention, it at first is the image of type scanner, to obtain a coordinate position of brightness irregularities, measure the color stage chromatic value of coordinate position of the brightness irregularities of display again, and foundation one threshold value is set up an offset corresponding tables, according to the coordinate position scope and the offset corresponding tables of brightness irregularities, adjust the image of display again.

The invention has the beneficial effects as follows: by the image of type scanner, to set up the position table of comparisons of brightness irregularities, measure the color range chromatic value of the image of display again, and set up the offset corresponding tables according to threshold value, then again according to the position table of comparisons and offset corresponding tables, can adjust the brightness of the image of display, and can reduce personnel costs, also can promote the speed of production line.

Description of drawings:

Fig. 1 is the process flow diagram of a preferred embodiment of the present invention; And

Fig. 2 is the calcspar of a preferred embodiment of the present invention.

The figure number explanation:

10 mnemons, 12 Application Specific Integrated Circuit

14 image interface circuits, 18 clock generators

20 horizontal drive circuits, 22 horizontal displacement working storages

24 breech lock modules, 240 sampling latch circuits

242 keep latch circuit 26 numerical digit analogy converters

30 vertical drive circuits, 32 vertical movement working storages

40 viewing areas

Embodiment:

Further understand and understanding for the juror is had architectural feature of the present invention and the effect reached, sincerely help with preferred embodiment and cooperate detailed explanation, illustrate as after:

The image regulating method of display of the present invention is to be example to be applied to LCD, but has more than the application LCD that this is a preferred embodiment.

See also Fig. 1, be the process flow diagram of a preferred embodiment of the present invention.As shown in the figure, the image of execution in step S10 type scanner at first, to obtain a coordinate position of brightness irregularities, when promptly being display demonstration single color, the image of type scanner is to learn the coordinate position scope of brightness irregularities, and set up a position table of comparisons and write an Application Specific Integrated Circuit (Application Specific Integrated Circuit, ASIC), above-mentioned it should be noted that, the image of type scanner with the method for the coordinate position of obtaining brightness irregularities can be in the image of type scanner in regular turn relatively the brightness of the brightness of one first pixel and one second pixel to produce a fiducial value, when fiducial value surpasses a reference value, promptly represent the brightness irregularities of two pixels, store the position of the brightness of first pixel and second pixel, setting up the position table of comparisons, or can use a charge coupled cell (charge couple device, CCD), the image of type scanner is with the coordinate position of the brightness irregularities that obtains display.The method of the coordinate position of the brightness irregularities of above-mentioned mentioned type scanner is one kind of for several scan methods, is not limited to above-mentioned method.Moreover, because the phenomenon of the display panel generation brightness irregularities of the display of each batch all takes place in fixed area, therefore a need carries out the image of type scanner at the display panel of the display of each different batches, to obtain a coordinate position of brightness irregularities, lose time to avoid scanning each display and then increase cost.

Then execution in step S12 measures the coordinate position of the brightness irregularities of display, produce color stage chromatic value and foundation one threshold value, set up an offset corresponding tables, wherein be to use an optical measurement instrument to measure the coordinate position and the even brightness coordinate position of the brightness irregularities of display in the mode of optical measurement, produce color range chromatic value and threshold value respectively, wherein threshold value is for showing the normal color range chromatic value of normal color, can reset the color range chromatic value according to threshold value makes the brightness of display evenly set up the offset corresponding tables, that is to say the color of the color of uneven color range chromatic value and threshold value and inequality, therefore need reset the color range chromatic value, make the color of brightness irregularities identical, and set up the offset corresponding tables with normal color.It sets up the offset corresponding tables is to set up the offset corresponding tables according to the difference of color range chromatic value and threshold value, or can be adjusted to threshold value mutually to set up the offset corresponding tables by the color range chromatic value, i.e. record is the color range chromatic value and the color range chromatic value that redefines of the image of display originally, and the offset corresponding tables write Application Specific Integrated Circuit equally, next execution in step S14 is according to the coordinate position scope and the offset corresponding tables of brightness irregularities, adjust the brightness of the image of display, promptly be that the position table of comparisons and offset corresponding tables are write Application Specific Integrated Circuit, with the brightness of image of control display.

Moreover, Application Specific Integrated Circuit will be according to the position table of comparisons and offset corresponding tables, the driving wafer of control LCD makes the anglec of rotation of adjusting liquid crystal and the uniform purpose of image brilliance that reaches display, or the fluorescent tube (CCFL) of control or the brightness of light-emittingdiode (LED) and reach the uniform purpose of image brilliance of LCD.

See also Fig. 2, it is the calcspar of a preferred embodiment of the present invention.As shown in the figure, display includes a mnemon 10, an Application Specific Integrated Circuit 12, an image interface circuit 14, a sequential generator 18, a horizontal drive circuit 20, a vertical drive circuit 30, and all be arranged at a glass substrate (figure do not paint), be display panel, horizontal drive circuit 20 and vertical drive circuit 30 all couple a viewing area 40 of display panel.The position of the present invention table of comparisons and offset corresponding tables write Application Specific Integrated Circuit 10, and mnemon 10 is the data that are used for depositing static picture shelves, for example raw, bmp or jpg etc., and its mnemon 10 can be Sram or Flash.

Image interface circuit 14 is to receive the static image of mnemon 10 as data or reception dynamic image data, for example audiovisual materials such as mpeg2 or mpeg4 are via the image data of suitable processing generation, its image data is to be RGB data or YUV data, this image data method of producing image data through suitable processing is that to be familiar with technical field person well known in order to know again, so repeat no more.Image interface circuit 14 is by receiving static image data or dynamic image data and being sent to Application Specific Integrated Circuit 12.

Application Specific Integrated Circuit 12 is to receive static image data or the dynamic image data that image interface circuit 14 transmits, and according to prior institute's position table of comparisons of setting up and burned static image data or the dynamic image data revised to Application Specific Integrated Circuit 12 of offset corresponding tables, that is to say earlier the position of finding out the data that static image data or dynamic image data will revise according to the position table of comparisons, according to the offset corresponding tables desire modification data is converted to the numerical value that the offset corresponding tables is set up again, or desire modification data is added that offset is to finish correction.Application Specific Integrated Circuit 12 is to export normal images data and revised image data to clock generator 18, again with image data, through clock pulse control output order, exports horizontal drive circuit 20 and vertical drive circuit 30 to.

Clock generator 10 is to receive the controlling signal that Application Specific Integrated Circuit 10 is supplied with, to produce a vertical input time pulse signal VST, a vertical movement time pulse signal VCK, level input time pulse signal HST and a horizontal displacement time pulse signal HCK.

Horizontal drive circuit 20 has a horizontal displacement working storage 22, horizontal displacement working storage 22 reception levels input time pulse signal HST and horizontal displacement time pulse signal HCK, horizontal displacement working storage 22 is according to horizontal displacement time pulse signal HCK delay level input time pulse signal HST, and produce a sampling time pulse signal, be used to the image data that external device (ED) transmitted of taking a sample.Clock generator 10 produces a sequential controlling signal and is sent to horizontal drive circuit 20, with controlling level driving circuit 20 according to controlling signal.

Horizontal drive circuit 20 more comprises a breech lock module 24 and a numerical digit analogy change-over circuit 26.Breech lock module 24 comprises that a sampling latch circuit 240 and keeps latch circuit 242.Sampling latch circuit 240 produces plural sampling data according to the sampling time pulse signal sampling image data that horizontal displacement working storage 22 is produced, and wherein image data is the image data that is transmitted for Application Specific Integrated Circuit 12.Keep latch circuit 242 according to the sequential control signal, keep those sampling data of sampling latch circuit 240.Those sampling data that numerical digit analogy converter 26 conversion keeps are the display signal of analogy, and are sent to the data line (figure does not paint) of viewing area 40 of the display panel of display device, with show image.

The vertical drive circuit 30 of display has a vertical movement working storage 32, and vertical movement working storage 32 receives vertical input time pulse signal VST and vertical movement time pulse signal VCK.Vertical movement working storage 32 is to postpone vertical input time pulse signal VST and produce a selection time pulse signal according to the first vertical movement time pulse signal VCK, be used to select the vertical scan line (figure does not paint) of viewing area 40, promptly control the vertical scan line (figure does not paint) of viewing area 45.

In addition, by Application Specific Integrated Circuit 12 is according to the position table of comparisons and offset corresponding tables, controlling level driving circuit 20 and then control liquid crystal rotational angle and reach the even brightness purpose of control display, or the cathode fluorescent tube (CCFL) of control or the brightness of light-emittingdiode (LED) and reach the uniform purpose of image brilliance of LCD.

In sum, the image regulating method of display of the present invention, it is the image of type scanner, to set up the position table of comparisons of brightness irregularities, measure the color range chromatic value of the image of display again, and set up the offset corresponding tables according to threshold value, and then again according to the position table of comparisons and offset corresponding tables, the brightness of the image of adjustment display.

The above, it only is a preferred embodiment of the present invention, be not to be used for limiting scope of the invention process, the equalization of doing according to the described shape of claim scope of the present invention, structure, feature and spirit changes and modifies such as, all should be included in the claim scope of the present invention.

Claims

1. the image regulating method of a display, a display panel that is used to adjust display has the phenomenon of brightness disproportionation in fixed area, it is characterized in that its step comprises:

Scan the image of this display, to obtain a coordinate position of brightness irregularities;

Measure this coordinate position of this display, produce the color stage chromatic value and, set up an offset corresponding tables according to a threshold value; And

According to this coordinate position and this offset corresponding tables, adjust the brightness of this display.

2. method of adjustment as claimed in claim 1, it is characterized in that in this coordinate position that measures this display, produce color stage chromatic value and foundation one threshold value, set up in the step of an offset corresponding tables, be to use an optical instrument for measuring tolerance to survey this coordinate position of this display.

3. method of adjustment as claimed in claim 1 is characterized in that setting up this offset corresponding tables according to the difference of this color range chromatic value and this threshold value.

4. method of adjustment as claimed in claim 1 is characterized in that this color range chromatic value can tune to this threshold value to set up this offset corresponding tables.

5. method of adjustment as claimed in claim 1 is characterized in that, more comprising before the step with a coordinate position of obtaining brightness irregularities in the image of this display of scanning:

The image that shows this display is a single color.

6. method of adjustment as claimed in claim 1 is characterized in that, more comprising in the step with a coordinate position of obtaining brightness irregularities in the image of this display of scanning:

Relatively the brightness of one first pixel and the brightness of one second pixel produce a fiducial value; And

Judge this fiducial value greater than a reference value, store the coordinate position of the brightness of this first pixel and this second pixel.

7. method of adjustment as claimed in claim 1 is characterized in that using a charge coupled cell, scans the image of this display, to obtain this coordinate position.

8. method of adjustment as claimed in claim 1 is characterized in that scanning the image of this display, with this coordinate position of obtaining brightness irregularities and set up a position table of comparisons.

9. method of adjustment as claimed in claim 1 is characterized in that more comprising a step:

Measure this coordinate position of even brightness of this display, produce this threshold value.

10. method of adjustment as claimed in claim 1 is characterized in that this threshold value is this color range chromatic value.

11. method of adjustment as claimed in claim 1 is characterized in that this display is to be applied to LCD.

12. method of adjustment as claimed in claim 11 is characterized in that this coordinate position and this offset corresponding tables according to brightness irregularities, control this LCD the liquid crystal anglec of rotation mode and adjust the image brilliance of this LCD.

13. method of adjustment as claimed in claim 1, this display panel that it is characterized in that each batch has the phenomenon of brightness disproportionation in fixed area.

14. method of adjustment as claimed in claim 11 is characterized in that this coordinate position and this offset corresponding tables according to brightness irregularities, controls a light source of this LCD and adjusts the image brilliance of this LCD.

15. method of adjustment as claimed in claim 14 is characterized in that this light source is a cathode fluorescent tube.

16. method of adjustment as claimed in claim 14 is characterized in that this light source is a light-emittingdiode.