CN112040129A - Optical compensation system of display and optical compensation method thereof - Google Patents
Optical compensation system of display and optical compensation method thereof Download PDFInfo
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- 230000003287 optical effect Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000000873 masking effect Effects 0.000 claims abstract description 6
- 238000009499 grossing Methods 0.000 claims description 11
- 230000001788 irregular Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
- 238000003384 imaging method Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
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Abstract
An optical compensation system of a display and an optical compensation method thereof. The optical compensation method includes the following steps. The display panel of the display is shot by the camera to obtain the plane data of the display. The first baseline data is generated by a processor of the host using the plane data. The first baseline data is masked by the processor using at least one masking pattern to generate second baseline data. The first baseline data and the second baseline data are superimposed by a processor to generate third baseline data. Calculating, by the processor, a coefficient data using the third baseline data. And setting a lookup table of the display by using the coefficient data through the processor so as to set the display effect of the display.
Description
Technical Field
The present invention relates to an optical compensation technology, and more particularly, to an optical compensation system of a display and an optical compensation method thereof.
Background
As semiconductor technology advances, the display panel size of the display is increased, but the display panel may have various optical defects (Mura) due to various process defects. The optical defects do not affect the use, but affect the display quality of the display.
The conventional optical compensation (DeMura) system only compensates for the imaging at a single viewing angle, i.e. only corrects for a single compensation value at a single viewing angle. However, the imaging and variation of the side-view optical defect and the front-view optical defect are different, and cannot be improved by a single compensation value under a single angle, and the imaging of the optical defect under different gray scales is different, and cannot be improved by a single compensation value.
Disclosure of Invention
The invention provides an optical compensation system of a display and an optical compensation method thereof, which can improve and compensate imaging by adding a mask pattern with special textures aiming at a panel with different imaging/variation of different visual angles.
The optical compensation system of the display comprises a camera and a host. The camera shoots a display panel of the display to obtain plane data of the display. The host has a processor and is coupled to the camera to receive the planar data. The processor generates first baseline data by using the plane data, masks the first baseline data by using at least one mask pattern to generate second baseline data, superposes the first baseline data and the second baseline data to generate third baseline data, calculates coefficient data by using the third baseline data, and sets a lookup table of the display by using the coefficient data to set the display effect of the display.
The optical compensation method of the display comprises the following steps. The display panel of the display is shot by the camera to obtain the plane data of the display. The first baseline data is generated by a processor of the host using the plane data. The first baseline data is masked by the processor using at least one masking pattern to generate second baseline data. The first baseline data and the second baseline data are superimposed by a processor to generate third baseline data. Calculating, by the processor, a coefficient data using the third baseline data. And setting a lookup table of the display by using the coefficient data through the processor so as to set the display effect of the display.
Based on the above, in the optical compensation system of a display and the optical compensation method thereof according to the embodiments of the invention, the first baseline data to which the mask pattern is attached is used to generate the second baseline data, and the first baseline data and the second baseline data are used to generate the third baseline data of the adjustment lookup table. Therefore, different textures can be customized for the imaging of the display panel to improve the display effect of the display panel.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a system diagram of an optical compensation system of a display according to an embodiment of the invention.
FIG. 2A is a diagram illustrating plane data according to an embodiment of the invention.
Fig. 2B is a diagram illustrating first baseline data according to an embodiment of the invention.
Fig. 2C is a diagram illustrating first baseline data of attaching a mask pattern according to an embodiment of the invention.
Fig. 2D is a diagram illustrating second data according to an embodiment of the invention.
Fig. 2E is a diagram illustrating third baseline data according to an embodiment of the invention.
Fig. 2F is a diagram illustrating coefficient data according to an embodiment of the invention.
FIG. 2G is a diagram illustrating resizing coefficient data according to an embodiment of the present invention.
Fig. 3A to 3J are schematic views of different mask patterns according to an embodiment of the invention.
FIG. 4 is a flowchart illustrating an optical compensation method for a display according to an embodiment of the present invention.
Description of reference numerals:
10: display device
11: display panel
12: driving circuit
13: control circuit
14: lookup table
100: optical compensation system
110: camera with a lens having a plurality of lenses
120: main unit
220: first baseline data
231. 301, 302, 311, 312, 321 to 325, 331, 341, 351, 361, 371, 381, 391: masking pattern
240: second baseline data
250: third baseline data
260. 270: coefficient data
300. 310, 320, 330, 340, 350, 360, 370, 380, 390: baseline data
DIM: image data
DPL210: plane data
DTable: look-up table data
S410, S420, S430, S440, S450, S460: step (ii) of
Detailed Description
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present invention and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a "first element," "component," "region," "layer" or "portion" discussed below could be termed a second element, component, region, layer or portion without departing from the teachings herein.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms, including "at least one", unless the content clearly indicates otherwise. "or" means "and/or". As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions integers, steps, operations, elements, components, and/or groups thereof.
FIG. 1 is a system diagram of an optical compensation system of a display according to an embodiment of the invention. Referring to fig. 1, in the present embodiment, an optical compensation system 100 includes a camera 110 and a host 120. The camera 110 is used for capturing images of the display panel 11 of the display 10 to obtain the plane data D of the display 10PL. The host 120 is an information device with a processor, such as a personal computer, a workstation, a server, etc., coupled to the camera 110 for receiving the plane data DPLAnd is coupled to the control circuit 13 of the display 10 to output the plane data D according to the display 10PLAnd at least one mask pattern (or texture map) providing lookup table data DTableTo update the look-up table 14 of the control circuit 13.
The display 10 further includes a driving circuit 12 coupled between the display panel 11 and the control circuit 13 for driving the display panel 11 to display an image according to the image data DIM provided by the control circuit 13, thereby controlling the display effect of the display panel 11. The control circuit 13 at least includes a timing controller for receiving an external image signal (not shown) and converting the image signal into image data DIM according to the look-up table 14. The driving circuit 12 includes at least a source driver and a gate driver. The display panel 11 is, for example, a liquid crystal display panel.
FIG. 2A is a diagram illustrating plane data according to an embodiment of the invention. Fig. 2B is a diagram illustrating first baseline data according to an embodiment of the invention. Fig. 2C is a diagram illustrating first baseline data of attaching a mask pattern according to an embodiment of the invention. Fig. 2D is a diagram illustrating second data according to an embodiment of the invention. Fig. 2E is a diagram illustrating third baseline data according to an embodiment of the invention. Fig. 2F is a diagram illustrating coefficient data according to an embodiment of the invention. FIG. 2G is a diagram illustrating resizing coefficient data according to an embodiment of the present invention.
Plane data DPL is shown, for example, as plane data 210 of fig. 2A, and the processor of host 120 utilizes plane data DPLThe first baseline data 220 as shown in fig. 2B is generated, wherein the first baseline data 220 may be compensation data of the display panel 11. Next, as shown in fig. 2C, the processor of the host computer 120 masks the first baseline data 220 with two mask patterns 231 of different sizes to generate the second baseline data 240 as shown in fig. 2D, in other words, the processor of the host computer 120 may paste the mask patterns 231 on the first baseline data 220 and smooth the first baseline data 220 pasted with the mask patterns 231 to generate the second baseline data 240. In this example, the processor of the host computer 120 may perform linear smoothing or S-type smoothing on the first baseline data 220 with the mask pattern 231 attached thereto, wherein the S-type smoothing may refer to the equation S (x) 1/(1+ e)-x)＝e-x/(e-x+1)。
Next, the processor of the host 120 performs superposition using the first baseline data 220 and the second baseline data 240 to generate a third baseline data 250 as shown in fig. 2E. And, the processor of the host computer 120 calculates the coefficient data 260 as shown in fig. 2F using the third baseline data 250. Finally, the processor of the host 120 can set the look-up table 14 of the display 10 by using the coefficient data 260 to set the display effect of the display 10.
In the embodiment of the present invention, the processor of the host 120 may resize the coefficient data 260 (e.g. the coefficient data 270 shown in fig. 2G) to correspond to the size of the lookup table 14, but in other embodiments, the size of the coefficient data 260 may not be adjusted, depending on the circuit design. Wherein the look-up table data DTableMay be coefficient data 260 or 270 or data generated according to coefficient data 260 or 270, and the embodiments of the present invention are not limited thereto.
Fig. 3A to 3J are schematic views of different mask patterns according to an embodiment of the invention. Referring to fig. 3A and 3B, as shown in the baseline data 300, the mask patterns 301 and 302 are, for example, two elliptical shapes with different sizes, and the mask patterns 301 and 302 are patterns with increased brightness (i.e., brighter); in contrast, as shown in the baseline data 310, the mask patterns 311 and 312 are also two elliptical shapes with different sizes, but the mask patterns 311 and 312 are reduced-brightness (i.e., darker) patterns.
Referring to fig. 3C and 3D, as shown in the baseline data 320, the mask patterns 321-325 are, for example, five triangles with the same size, and the mask patterns 321-325 are brightness increasing patterns; as shown in the baseline data 330, the mask pattern 331 is, for example, a larger triangle, and the mask pattern 331 is a pattern for increasing the brightness.
Referring to fig. 3E to 3J, as shown in the baseline data 340, the mask pattern 341 is, for example, a gradually layered cylinder; as shown in the baseline data 350, the mask pattern 351 is, for example, a columnar pattern having a dot-like radial pattern; as shown by the baseline data 360, the mask pattern 361 is, for example, a free-hand drawn shape; as shown in the baseline data 370, the mask pattern 371 is, for example, a long stripe whose boundary is erased; as shown by baseline data 380, mask pattern 381 is, for example, a long stripe radiating from a central diamond; as shown by the baseline data 390, the mask pattern 381 is, for example, a long stripe with a center dark stripe.
According to the above, in the embodiment of the invention, the mask pattern may include at least one irregular shape and/or at least one geometric shape, and may be an average luminance distribution, a gradient luminance distribution or a polynomial equation distribution, respectively, wherein the size of the mask pattern may be smaller than or equal to the size of the first baseline data (e.g. 220), and the mask pattern may be set to cut the region.
FIG. 4 is a flowchart illustrating an optical compensation method for a display according to an embodiment of the present invention. Referring to fig. 4, in the present embodiment, the optical compensation method of the display includes the following steps. In step S410, a display panel of a display is photographed by a camera to acquire plane data of the display. In step S420, first baseline data is generated by a processor of the host using the plane data. In step S430, the first baseline data is masked by the processor using at least one masking pattern to generate second baseline data. In step S440, the first baseline data and the second baseline data are superimposed by the processor to generate third baseline data. In step S450, coefficient data is calculated by the processor using the third baseline data. In step S460, a look-up table of the display is set by the processor using the coefficient data to set a display effect of the display.
The sequence of steps S410 to S460 is for illustration, and the embodiment of the invention is not limited thereto. The details of steps S410 to S460 can be described with reference to fig. 1, fig. 2A to fig. 2G, and fig. 3A to fig. 3J, and are not repeated herein.
In summary, in the optical compensation system and the optical compensation method of the display according to the embodiments of the invention, the first baseline data to which the mask pattern is attached is used to generate the second baseline data, and the first baseline data and the second baseline data are used to generate the third baseline data of the adjustment lookup table. Therefore, the embodiment of the invention has the following advantages: 1. different textures can be customized for the imaging of the display panel; 2. the imaged texture can be set for a local or whole area of the display panel; 3. different intensities (e.g., intensities and/or number of fitted powers) may be set for the texture of the mask pattern; 4. the smoothing of the mask pattern may use Linear (Linear) smoothing and S-type (Sigmoid) smoothing; and 5, setting the texture mapping table in the grid cutting area.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (14)
1. An optical compensation system for a display, comprising:
a camera for shooting a display panel of a display to obtain a plane data of the display;
a host computer having a processor and coupled to the camera for receiving the plane data, wherein the processor generates a first baseline data by using the plane data, masks the first baseline data by using at least one mask pattern to generate a second baseline data, superimposes the first baseline data and the second baseline data to generate a third baseline data, calculates a coefficient data by using the third baseline data, and sets a lookup table of the display by using the coefficient data to set a display effect of the display.
2. The optical compensation system of claim 1, wherein the processor affixes the at least one mask pattern to the first baseline data and smoothes the affixed first baseline data to generate the second baseline data.
3. The optical compensation system of claim 2, wherein the processor performs a linear smoothing process or an S-shaped smoothing process on the pasted first baseline data.
4. The optical compensation system of claim 1, wherein the at least one mask pattern comprises at least one irregular shape or at least one geometric shape.
5. The optical compensation system of claim 1, wherein the at least one mask pattern is an average luminance distribution, a gradient luminance distribution or a polynomial equation distribution, respectively.
6. The optical compensation system of claim 1, wherein the size of the at least one mask pattern is less than or equal to the first baseline data.
7. The optical compensation system of claim 1, wherein the coefficient data is resized to correspond to the size of the lookup table.
8. A method of optical compensation of a display, comprising:
shooting a display panel of a display through a camera to obtain plane data of the display;
generating, by a processor of a host, a first baseline data using the plane data;
masking, by the processor, the first baseline data with at least one masking pattern to generate second baseline data;
generating, by the processor, a third baseline data by superimposing the first baseline data and the second baseline data;
calculating, by the processor, a coefficient data using the third baseline data; and
and setting a lookup table of the display by using the coefficient data through the processor so as to set a display effect of the display.
9. The optical compensation method of claim 8, wherein generating the second baseline data comprises:
pasting the at least one mask pattern to the first baseline data; and
smoothing the first baseline data pasted to generate the second baseline data.
10. The optical compensation method of claim 9, wherein a linear smoothing process or an S-type smoothing process is performed on the pasted first baseline data.
11. The optical compensation method of claim 9, wherein the at least one mask pattern comprises at least one irregular shape or at least one geometric shape.
12. The optical compensation method of claim 9, wherein the at least one mask pattern is an average luminance distribution, a gradient luminance distribution or a polynomial equation distribution, respectively.
13. The optical compensation method of claim 9, wherein a size of the at least one mask pattern is smaller than or equal to the first baseline data.
14. The optical compensation method of claim 9, wherein the coefficient data is resized to correspond to the size of the lookup table.
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| TW109107834 | 2020-03-10 | ||
| TW109107834A TWI718895B (en) | 2020-03-10 | 2020-03-10 | Demura system of display and demura method thereof |
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| CN112040129B CN112040129B (en) | 2022-03-08 |
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| Publication number | Publication date |
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| TWI718895B (en) | 2021-02-11 |
| CN112040129B (en) | 2022-03-08 |
| TW202134760A (en) | 2021-09-16 |
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