ELECTRO-OPTICAL DEVICE

• US 20100302284A1
• Filed: 03/17/2010
• Published: 12/02/2010
• Est. Priority Date: 06/02/2009
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: KARAKI, Nobuo
• Application Number:
  US12/725,801
• Publication Number:
  US 20100302284A1
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2300/0814 used for selection purposes, e.g. logical AND for partial update
• CPC Class Codes: G09G 2300/0871 with level shifting
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04

Abstract

An electro-optical device that facilitates assembly of the electro-optical device composed of a plurality of display tiles on a wall surface, and its assembly method are provided. It includes a plurality of display tiles, and a foundation structure having a plurality of regions, wherein the foundation structure is equipped with a signal bus for transmitting an image data signal to a first display tile among the plurality of display tiles, and a first connection section that electrically connects the signal bus with the first display tile, and the first display tile is equipped with pixel elements, a signal processing section that generates signals for driving the pixel elements based on the image data signal, and a second connection section that is electrically connected to the first connection section.

Claims

1. An electro-optical device comprising:

a plurality of display tiles and a foundation structure having a plurality of regions, wherein

the foundation structure is equipped with a signal bus for transmitting an image data signal to a first display tile among the plurality of display tiles, and a first connection section that electrically connects the signal bus with the first display tile, and

the first display tile is equipped with pixel elements, a signal processing section that generates signals for driving the pixel elements based on the image data signal, and a second connection section that is electrically connected to the first connection section.

2. An electro-optical device recited in claim 1, wherein the foundation structure includes a first mounting section for fixing the first display tile to a first region among the plurality of regions, and the first display tile includes a second mounting section to be attached to the first mounting section.

5. An electro-optical device recited in claim 1, wherein the plurality of display tiles includes those in different configurations and different numbers of pixel elements.

6. An electro-optical device recited in claim 1, wherein the signal processing section of the display tile performs signal processing according to a hierarchical structure, and includes an uppermost layer that serves as an input interface for the image data, a lowermost layer in which the plurality of pixel elements and a plurality of pixel element driving circuits each corresponding to each of the pixel elements are arranged, and a middle layer that processes and computes data supplied from an upper layer and supplies the same to a lower layer.

7. An electro-optical device recited in claim 6, wherein the display tile further includes a non-volatile memory device that stores errors with respect to a target color and/or a target luminance caused by variations in each of the pixel elements and changes with time, and is equipped with a device that calculates an input value for the pixel element in the lowermost layer in a manner to cancel out the errors stored in the non-volatile memory.

3. An electro-optical device that forms a large-size screen by combining a plurality of display tiles each of which displays a small-size screen, wherein each of the display tiles is equipped with

a signal bus for transmitting an image data signal,

a connection section that electrically connects the signal buses with one another on adjoining ones of the display tiles,

a plurality of pixel elements that form the small-size screen, and

a signal processing section that forms a signal for driving each of the pixel elements from the image data signal.

4. An electro-optical device recited in claim 3, wherein the large-size screen is formed by two-dimensionally arranging the plurality of display tiles and connecting the connection sections of adjoining ones of the display tiles with one another, and

further comprising an interface section that is provided at least at one end section of the large-size screen composed of the plurality of display tiles and relays an externally supplied image data signal to the signal bus of each of the plurality of display tiles disposed at the one end section.