Display device having multiple viewing zones and converting horizontally-arranged RGB subpixel data for output on square-shaped vertically-arranged RGB subpixels

• US 9,165,491 B2
• Filed: 10/15/2008
• Issued: 10/20/2015
• Est. Priority Date: 11/29/2007
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Woo, Jong-Hoon, Lee, Young-Bok
• Primary Examiner(s): Nguyen, Chanh
• Assistant Examiner(s): LINGARAJU, NAVIN B
• Application Number:
  US12/285,874
• Publication Number:
  US 20090140950A1
• Time in Patent Office: 2,561 Days
• Field of Search: 345 4- 6, 345 30-104, 345694-696
• 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: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2320/028 by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/351 for displaying simultaneously

Abstract

A display device having multiple viewing zones includes a display panel including a plurality of pixels in a matrix form, each pixel including red, green and blue sub-pixels arranged in a vertical direction; and a light guide panel guiding a first image emitted from the pixels in first columns among the plurality of pixels to a first viewing zone and a second image emitted from the pixels in second columns among the plurality of pixels to a second viewing zone, wherein the first column is adjacent to the second column.

Claims

1. A display device having multiple viewing zones, comprising:

a display panel including a plurality of pixels in a matrix form, each pixel including red, green, and blue sub-pixels arranged in a vertical direction, wherein each of the red, the green and the blue sub-pixels has a square shape to increase a pitch between adjacent sub-pixels and increase a distance between the display panel and a light guide panel and is arranged in a horizontal line with no intervening space between sub-pixels of a same color, and each pixel is longer in the vertical direction than in the horizontal direction; and

the light guide panel guiding a first image emitted from the pixels in first columns among the plurality of pixels to a first viewing zone and a second image emitted from the pixels in second columns among the plurality of pixels to a second viewing zone, wherein the first column is adjacent to the second column,

wherein a first original image data including first red, green, and blue sub-pixel image data is arranged in a horizontal direction and a second original image data including second red, green, and blue sub-pixel image data is arranged in the horizontal direction,

wherein the first and second original image data are input to the display panel,

wherein average values of the first red, green and blue sub-pixel image data at the first and second rows and the first to third columns of the first original image data are applied to the red, green and blue sub-pixels at a first row with respect to pixel and the first column among the plurality of pixels, respectively, and average values of the second red, green and blue sub-pixel image data at the first and second rows and the first to third columns of the second original image data are applied to the red, green and blue sub-pixels at the first row with respect to pixel and the second column among the plurality of pixels, respectively, and

wherein average values of the first red, green, and blue sub-pixel image data at the second and third rows and the first to third columns of the first original image data are applied to the red, green, and blue sub-pixels at a second row with respect to pixel and the first column among the plurality of pixels, respectively, and average values of the second red, green, and blue sub-pixel image data at the second and third rows and the first to third columns of the second original image data are applied to the red, green, and blue sub-pixels at the second row with respect to pixel and the second column among the plurality of pixels, respectively.

2. The device according to claim 1, wherein the light guide panel guides a third image emitted from the pixels in third columns among the plurality of pixel to a third viewing zone, and the third column is adjacent to one of the first and second columns.

3. The device according to claim 1, wherein the light guide panel includes a parallax barrier including a transmissive portion and a blocking portion alternately arranged in the horizontal direction.

4. The device according to claim 1, wherein the display panel includes one of an organic electroluminescent panel, and a liquid crystal panel and a light source supplying light to the liquid crystal panel.

5. The device according to claim 1, wherein each of sub-pixel image data has a rectangular shape.