# US 9,521,404 B2 · Three-dimensional display control method and 3D display control device

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- Number: US 9,521,404 B2
- Document ID: US9521404B2
- Status: Granted
- Kind: B2
- Application number: 14/348,267
- Filed: 2013-04-24
- Published: 2015-11-05
- Granted: 2016-12-13
- Earliest claimed: 2013-02-20
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Yanbing Wu
- Web page: https://patentgrep.com/patent/US9521404B2

## CPC

- H04N 13/315: the parallax barriers being time-variant
- G02B 30/27: involving lenticular arrays
- G02B 30/32: characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size
- G09G 3/003: {to produce spatial visual effects}
- G09G 3/18: using liquid crystals
- G09G 3/36: using liquid crystals
- H04N 13/31: using parallax barriers
- H04N 13/398: Synchronisation thereof; Control thereof
- G09G 2300/023: Display panel composed of stacked panels
- G09G 2320/0209: Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
- H04N 2213/002: Eyestrain reduction by processing stereoscopic signals or controlling stereoscopic devices
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

Embodiments of the present invention disclose a three-dimensional (3D) display control method and a 3D display control device. The 3D display control method comprises: sequentially acquiring left-eye image data or right-eye image data corresponding to each column of subpixels on a display panel for displaying a current frame image; and sequentially updating images displayed by each column of subpixels according to the left-eye image data or the right-eye image data for displaying the current frame image, and meanwhile updating light shielding regions and light transmitting regions of a grating device corresponding to a previous frame image, so as to achieve a naked-eye 3D image displaying.

## Claims

### Claim 1

A 3D display control method, comprising:
sequentially acquiring left-eye image data or right-eye image data corresponding to each column of subpixels on a display panel for displaying a current frame image; and
sequentially updating images displayed by each column of subpixels according to the left-eye image data or the right-eye image data for displaying the current frame image, and meanwhile updating light shielding regions and light transmitting regions of a grating device corresponding to a previous frame image, so as to achieve a naked-eye 3D image displaying;
wherein the sequentially updating images displayed by each column of subpixels according to the left-eye image data or the right-eye image data for displaying the current frame image, and meanwhile updating light shielding regions and light transmitting regions of a grating device corresponding to a previous frame image comprises:
shading all the light transmitting regions of the grating device corresponding to any one column of subpixels, when the any one column of subpixels are being updated to display the current frame image; and
after the any one column of subpixels are completely updated, if a region of the grating device corresponding to the any one column of subpixels also corresponds to a next adjacent column of subpixels adjacent to the any one column of subpixels, when the next adjacent column of subpixels are not completely updated, still shading a light transmitting region of the grating device corresponding to both the any one column of subpixels and the next adjacent column of subpixels, and when the next adjacent column of subpixels are completely updated, immediately converting a state of the region of the grating device corresponding to both the any one column of subpixels and the next adjacent column of subpixels between a light shielding state and a light transmitting state; if the region of the grating device corresponding to the any one column of subpixels does not correspond to other columns of subpixels, when the any one column of subpixels are completely updated, immediately converting the state of the region of the grating device corresponding to the any one column of subpixels between the light shielding state and the light transmitting state.

### Claim 2 (depends on 1)

The 3D display control method according to claim 1, wherein the updating the light shielding regions and the light transmitting regions of the grating device comprises:
when a region of the grating device corresponding to both the 2n−1th column of the subpixels and the 2nth column of subpixels and having a first predetermined width during displaying the previous frame image is a light transmitting region and the other regions are light shielding regions, updating a region of the grating device corresponding to both the 2nth column of subpixels and the 2n+1th column of subpixels and having a second predetermined width during displaying the current frame image into a light transmitting region and updating the other regions into light shielding regions, wherein n=1, 2, 3 . . . ; and
when a region of the grating device corresponding to both the 2nth column of subpixels and the 2n+1th column of subpixels and having the second predetermined width during displaying the previous frame is a light transmitting region and the other regions are light shielding regions, updating a region of the grating device corresponding to both the 2n−1th column of subpixels and the 2nth column of subpixels and having the first predetermined with during displaying the current frame into a light transmitting region and updating the other regions into light shielding regions, wherein n=1, 2, 3 . . . .

### Claim 3 (depends on 2)

The 3D display control method according to claim 2, wherein the updating the region of the grating device corresponding to both the 2nth column of subpixels and the 2n+1th column of subpixels and having the second predetermined width during displaying the current frame image into the light transmitting region and updating the other regions into light shielding regions includes:
before a first column of subpixels is updated to display the current frame image, shading a light transmitting region of the grating device corresponding to both the first column of subpixels and a second column of subpixels and having the first predetermined width in such a way that a region of the grating device corresponding to both the first column of subpixels and the second column of subpixels is a light shielding region; after the first column of subpixels is updated to display the current frame image, updating a region of the grating device only corresponding to the first column of subpixels into a light transmitting region, and meanwhile an image displayed by the second column of subpixels is updated;
after the image displayed by the second column of subpixels is completely updated, shading a light transmitting region of the grating device corresponding to both a third column of subpixels and a fourth column of subpixels and having a first predetermined width in such a way that a region of the grating device corresponding to the third column of subpixels and the fourth column of subpixels is a light shielding region, and meanwhile updating an image displaying by the third column of subpixels;
after the image displayed by the third column of subpixels is completely updated, updating the region of the grating device corresponding to the second column of subpixels and the third column of subpixels having the second predetermined width into a light transmitting region, and meanwhile updating an image displayed by the fourth column of subpixels;
after the image displayed by the fourth column of subpixels is completely updated, shading a light transmitting region of the grating device corresponding to both a fifth column of subpixels and a sixth column of subpixels and having a first predetermined with so that a region of the grating device corresponding to the fifth column of subpixels and the sixth column of subpixels is a light shielding region, and meanwhile updating an image displayed by the fifth column of subpixels; after the image displayed by the fifth column of subpixels is completely updated, updating a region of the grating device corresponding to both the fourth column of subpixels and the fifth column of subpixels and having a second predetermined width into a light transmitting region, and meanwhile updating an image displayed by the sixth column of subpixels; and so on, until a final column of subpixels are completely updated.

### Claim 4 (depends on 2)

The 3D display control method according to claim 2, wherein the updating the region of the grating device of corresponding to both the 2n−1th column of subpixels and the 2nth column of subpixels and having the first predetermined width during displaying the current frame image into a light transmitting region and updating the other regions into light shielding regions includes:
before a first column of subpixels is updated to display the current frame image, shading a light transmitting region of the grating device corresponding to the first column of subpixels and having the second predetermined width in such a way that a region of the grating device corresponding to the first column of subpixels is a light shielding region; and updating an image displayed by the first column of subpixels; after the image displayed by the first column of subpixels is completely updated, shading a light transmitting region of the grating device corresponding to both a second column of subpixels and a third column of subpixels and having the second predetermined width, and meanwhile updating an image displayed by the second column of subpixels; after the image displayed by the second column of subpixels is completely updated, updating a region of the grating device corresponding to both the first column of subpixels and the second column of subpixels and having the first predetermined width into a light transmitting region, and meanwhile updating an image displayed by the third column of subpixels;
after the image displayed by the third column of subpixels is completely updated, shading a light transmitting region of the grating device corresponding to both a fourth column of subpixels and a fifth column of subpixels and having the second predetermined width, and meanwhile updating an image displayed by the fourth column of subpixels; after the image displayed by the fourth column of subpixels is completely updated, updating a region of the grating device corresponding to both the third column of subpixels and the fourth column of subpixels and having the first predetermined width into a light transmitting region, and meanwhile updating an image displayed by the fifth column of subpixels; in a similar fashion, until a final column of subpixels are completely updated.

### Claim 5 (depends on 1)

The 3D display control method according to claim 1, wherein the updating the light shielding regions and the light transmitting regions of the grating device during displaying the current frame image includes:
updating light shielding regions and light transmitting regions of a parallax barrier corresponding to the previous frame image.

### Claim 6 (depends on 2)

The 3D display control method according to claim 2, wherein the first predetermined width is equal to the second predetermined width.

### Claim 7 (depends on 2)

The 3D display control method according to claim 2, wherein the first predetermined width is not equal to the second predetermined width.

### Claim 8

A 3D display control device, comprising:
an image acquiring unit, configured to sequentially acquire left-eye image data or right-eye image data of the current frame image corresponding to each column of subpixels on a display panel; and
a 3D display control unit, configured to sequentially update images displayed by each column of subpixels according to the left-eye image data or the right-eye image data for displaying the current frame image, and meanwhile update light shielding regions and light transmitting regions of a grating device corresponding to the previous frame image, so as to achieve the 3D naked-eye image displaying;
wherein the 3D display control unit is configured to:
shade all the light transmitting regions of the grating device corresponding to any one column of subpixels, when the any one column of subpixels is being updated to display the current frame image; and
after any one column of subpixels are completely updated, if a region of the grating device corresponding to the any one column of subpixels and also corresponds to the a next adjacent column of subpixels adjacent to the any one column of subpixels, when the next adjacent column of subpixels are not completely updated, still shade a light transmitting region of the grating device corresponding to both the any one column of subpixels and the next adjacent column of subpixels, and when the next adjacent column of subpixels are completely updated, immediately convert a state of the region of the grating device corresponding to both the any one column of subpixels and the next adjacent column of subpixels between a light shading state and a light transmitting state; if the region of the grating device corresponding to the any one column of subpixels does not correspond to other column of subpixels, when the any one column of subpixels are completely updated, immediately convert the state of the grating device corresponding to the any one column of subpixels between the light shielding state and the light transmitting state.

### Claim 9 (depends on 8)

The 3D display control device according to claim 8, wherein the 3D display control unit is configured to: update a region of the grating device corresponding to both the 2nth column of subpixels and the 2n+1th column of subpixels and having a second predetermined width into a light transmitting region and update the other regions into light shielding regions during displaying the current frame image, when a region of the grating device corresponding to both the 2n−1th column of subpixels and the 2nth column of subpixels and having a first predetermined width is a light transmitting region and other regions are light shielding region during displaying the previous frame image, wherein n=1, 2, 3 . . . , and
update a region of the grating device corresponding to both the 2n−1th column of subpixels and the 2nth column of subpixels and having the first predetermined width into a light transmitting region and update other regions into light shielding regions during displaying the current frame image, when a region of the grating device corresponding to both the 2nth column of subpixels and the 2n+1th column of subpixels and having the second predetermined width is a light transmitting region and the other regions are light shielding regions during displaying the previous frame image, in which n=1, 2, 3 . . . .

### Claim 10 (depends on 9)

The 3D display control device according to claim 9, wherein the 3D display control unit is configured to: before a first column of subpixels is updated to display the current frame image, shade a light transmitting region of the grating device corresponding to both the first column of subpixels and a second column of subpixels and having the first predetermined width in such a way that a region of the grating device corresponding to both the first column of subpixels and the second column of subpixels is a light shielding region; after the first column of subpixels is updated to display the current frame image, update a region of the grating device only corresponding to the first column of subpixels into a light transmitting region, and meanwhile update and image displayed by the second column of subpixels;
after the image displayed by the second column of subpixels is completely updated, shade a light transmitting region of the grating device corresponding to both a third column of subpixels and a fourth column of subpixels and having the first predetermined width in such a way that a region of the grating device corresponding to both the third column of subpixels and the fourth column of subpixels is a light shielding region and an image display by the third column of subpixels is updated; after the image displayed by the third column of subpixels is completely updated, update a region of the grating device corresponding to both the second column of subpixels and the third column of subpixels and having the second predetermined width into a light transmitting region, and meanwhile update the image displayed by the fourth column of subpixels;
after the image displayed by the fourth column of subpixels is completely updated, shade a light transmitting region of the grating device corresponding to both a fifth column of subpixels and a sixth column of subpixels and having the first predetermined width so that a region of the grating device corresponding to the fifth column of subpixels and the sixth column of subpixels is a completely light shielding region, and meanwhile update an image displayed by the fifth column of subpixels; after the image displayed by the fifth column of subpixels is completely updated, update a region of the grating device corresponding to both the fourth column of subpixels and the fifth column of subpixels and having the second predetermined width into a light transmitting region, and meanwhile update an image displayed by the sixth column of subpixels; and so on, until a final column of subpixels are completely updated.

### Claim 11 (depends on 9)

The 3D display control device according to claim 9, wherein the 3D display control unit is configured to: before a first column of subpixels is updated to display the current frame image, shade a light transmitting region of the grating device corresponding to the first column of subpixels in such a way that a region of the grating device corresponding to the first column of subpixels is a light shielding region; update an image displayed by the first column of subpixels; after the image displayed by the first column of subpixels is completely updated, shade a light transmitting region of the grating device corresponding to both a second column of subpixels and a third column of subpixels and having a second predetermined width, and meanwhile update an image displayed by the second column of subpixels; after the image displayed by the second column of subpixels is completely updated, update a region of the grating device corresponding to both the first column of subpixels and the second column of subpixels and having a first predetermined width into a light transmitting region, and meanwhile update an image displayed by the third column of subpixels;
after the image displayed by the third column of subpixels is completely updated, shade a light transmitting region of the grating device corresponding to both a fourth column of subpixels and a fifth column of subpixels and having the second predetermined width, and meanwhile update an image displayed by the fourth column of subpixels; after the image displayed by the fourth column of subpixels is completely updated, update a region of the grating device corresponding to both the third column of subpixels and the fourth column of subpixels and having the first predetermined width into a light transmitting region, and meanwhile update an image displayed by the fifth column of subpixels; in a similar fashion, until the final column of subpixels are completely updated.

### Claim 12 (depends on 8)

The 3D display control device according to claim 8, wherein the grating device is a parallax barrier.

### Claim 13 (depends on 9)

The 3D display control device according to claim 9, wherein the first predetermined width is equal to the second predetermined width.

### Claim 14 (depends on 9)

The 3D display control device according to claim 9, wherein the first predetermined width is not equal to the second predetermined width.