3D display alignment method

• US 9,519,152 B2
• Filed: 12/06/2013
• Issued: 12/13/2016
• Est. Priority Date: 12/06/2013
• Status: Active Grant

• Current Assignee: Asmpt Singapore Pte Limited
• Original Assignee: ASM Technology Singapore Pte Limited (ASMPT Ltd.)
• Inventors: Wong, Chi Shing, Chau, Man Lai, Wu, Yuet, Deng, Jiang Wen, Leung, Wing Hong
• Primary Examiner(s): Arbes, Carl
• Application Number:
  US14/099,227
• Publication Number:
  US 20150162362A1
• Time in Patent Office: 1,103 Days
• US Class Current: 1/1
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/30 involving parallax barriers
• CPC Class Codes: G02F 1/1303 Apparatus specially adapted to the manufacture of LCDs
• CPC Class Codes: G02F 1/133354 Arrangements for aligning or assembling substrates
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/327 Calibration thereof
• CPC Class Codes: Y10T 29/49002 Electrical device making
• CPC Class Codes: Y10T 29/5313 Means to assemble electrical device

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

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.

2. 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.

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

4. 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.

5. 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.

6. 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.

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.