# US 9,519,152 B2 · 3D display alignment method

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- Number: US 9,519,152 B2
- Document ID: US9519152B2
- Status: Granted
- Kind: B2
- Application number: 14/099,227
- Filed: 2013-12-06
- Published: 2015-06-11
- Granted: 2016-12-13
- Earliest claimed: 2013-12-06
- Assignees: Asm Technology Singapore Pte Ltd
- Applicants: Chi Shing Wong; Man Lai Chau; Yuet Wu; Jiang Wen Deng; Wing Hong Leung
- Inventors: Chi Shing Wong; Man Lai Chau; Yuet Wu; Jiang Wen Deng; Wing Hong Leung
- Web page: https://patentgrep.com/patent/US9519152B2

## CPC

- G02B 30/27: involving lenticular arrays
- G02B 30/30: involving parallax barriers
- H04N 13/31: using parallax barriers
- H04N 13/327: Calibration thereof
- G02F 1/1303: {Apparatus specially adapted to the manufacture of LCDs}
- G02F 1/133354: {Arrangements for aligning or assembling substrates}
- Y10T 29/49002: Electrical device making
- Y10T 29/5313: Means to assemble electrical device
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

There is provided an apparatus for alignment of a thin-film transistor (TFT) panel and a barrier panel of a three-dimensional (3D) display. The apparatus comprises at least one light source for illuminating pixels in at least one region of the TFT panel and for illuminating at least one region of an exposure pattern of the barrier panel; a pattern recognition system for detecting light emitted from the at least one light source that is reflected by or transmitted through the 3D display, to generate alignment data relating to an alignment between the detected illuminated pixels of the TFT panel and the exposure pattern of the barrier panel; and a positioning mechanism for adjusting the relative position between the barrier panel and the TFT panel in relation to the alignment data. The at least one light source comprises at least one invisible light source which emits invisible light outside the visible region of the electromagnetic spectrum.

## Claims

### Claim 1

An apparatus for alignment of a thin-film transistor panel and a barrier panel of a three-dimensional display, the apparatus comprising:
at least one light source for illuminating pixels in at least one region of the thin-film transistor panel and for illuminating at least one region of an exposure pattern of the barrier panel, wherein the at least one light sources comprises at least one invisible light source which is operable to emit invisible light outside the visible region of the electromagnetic spectrum;
a pattern recognition system for detecting light emitted from the at least one light source including the invisible light source that is reflected by or transmitted through the three-dimensional display, to generate alignment data relating to an alignment between the detected illuminated pixels of the thin-film transistor and the exposure pattern of the barrier panel; and
a positioning mechanism for adjusting the relative position between the barrier panel and the thin-film transistor panel in relation to the alignment data.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the at least one invisible light source is operable to emit invisible light that is predominantly outside the visible region of the electromagnetic spectrum.

### Claim 3 (depends on 2)

The apparatus of claim 2, wherein the at least one invisible light source is an infrared light source.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the at least one invisible light source is positionable on the barrier panel side of the three-dimensional display.

### Claim 5 (depends on 4)

The apparatus of claim 4, wherein the at least one invisible light source is positionable at an inclined angle relative to the barrier panel side of the three-dimensional display.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the at least one invisible light source is positionable on the thin-film transistor panel side of the three-dimensional display.

### Claim 7

An apparatus for alignment of a thin-film transistor panel and a barrier panel of a three-dimensional display, the apparatus comprising:
at least one light source for illuminating pixels in at least one region of the thin-film transistor panel and for illuminating at least one region of an exposure pattern of the barrier panel;
a pattern recognition system for detecting light emitted from the at least one light source that is reflected by or transmitted through the three-dimensional display, to generate alignment data relating to an alignment between the detected illuminated pixels of the thin-film transistor and the exposure pattern of the barrier panel; and
a positioning mechanism for adjusting the relative position between the barrier panel and the thin-film transistor panel in relation to the alignment data;
wherein the at least one light source comprises at least one invisible light source which is operable to emit invisible light outside the visible region of the electromagnetic spectrum; and
wherein the at least one invisible light source comprises an invisible light source positionable on the thin-film transistor panel side of the three-dimensional display and an invisible light source positionable on the barrier panel side of the three-dimensional display.