Display device and checking system including the same

Patent metadata

Field	Value
Publication number	US-12526397-B2
Application number	US-202318383520-A
Country	US
Kind code	B2
Filing date	Oct 25, 2023
Priority date	Dec 26, 2022
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

A display device includes: a display panel including a display area and a plurality of sub-pixels disposed in the display area; an optical member bonded onto the display panel; and a display driving unit configured to receive a correction coefficient for each viewing viewpoint of the display panel from a checking device of the display panel, to which the optical member is bonded, configured to correct image data for each viewing viewpoint using the correction coefficient for each viewing viewpoint, and configured to drive the display panel so that an image according to the corrected image data is displayed in the display area.

First claim

What is claimed is:

1 . A display device comprising:
a display panel including a display area and a plurality of sub-pixels disposed in the display area; an optical member bonded onto the display panel; and a display driving unit configured to receive a correction coefficient for each viewing viewpoint of the display panel from a checking device of the display panel, to which the optical member is bonded, configured to correct image data for each viewing viewpoint using the correction coefficient for each viewing viewpoint, and configured to drive the display panel so that an image according to the corrected image data is displayed in the display area, wherein the correction coefficient is obtained by comparing an optical characteristic of a display image for one viewing viewpoint with an average optical characteristic value of remaining viewing viewpoints for the display image.

2 . The display device of claim 1 , wherein the display driving unit is configured to:
set a viewing viewpoint and a viewing viewpoint number according to the viewing viewpoint for each sub-pixel according to a relative arrangement position of each sub-pixel for each stereoscopic lens of the plurality of stereoscopic lenses of the optical member, align an arrangement position for each horizontal line of the image data according to the viewing viewpoint and the viewing viewpoint number of each sub-pixel, and display an image according to corrected image data in the display area by correcting image data for each viewing viewpoint with the correction coefficient for each viewing viewpoint.

3 . The display device of claim 2 , wherein the checking device includes:
an optical path conversion unit configured to modulate an optical path of the display image for each viewing viewpoint by reflecting the display image that is displayed on the display panel for each viewing viewpoint, an optical characteristic detection unit configured to generate and output an optical characteristic detection signal by sequentially detecting optical characteristics of the display image for each viewing viewpoint of which the optical path is modulated by the optical path conversion unit, and an optical characteristic analysis unit configured to generate and output a correction coefficient for each viewing viewpoint according to the optical characteristics for each viewing viewpoint by analyzing the optical characteristic detection signal for each viewing viewpoint output from the optical characteristic detection unit.

4 . The display device of claim 3 , wherein the viewing viewpoints and the viewing viewpoint numbers of the display panel correspond to or are included in a width of one of the stereoscopic lenses of the optical member in a thickness direction, and are set to be equal to the number of sub-pixels disposed on a first surface of each stereoscopic lens.

5 . The display device of claim 3 , wherein the optical characteristic detection unit is configured to:
detect optical characteristics of any one of luminance, illumination, or light quantity of the display image for each viewing viewpoint that is displayed on the display panel and whose optical path is modulated by the optical path conversion unit, and transmit the optical characteristic detection signal corresponding to the optical characteristics of any one of the luminance, illumination, or light quantity to the optical characteristic analysis unit.

6 . The display device of claim 3 , wherein the optical characteristic analysis unit is configured to:
convert the optical characteristic detection signal for each viewing viewpoint into a digital signal, and analyze an average optical characteristic value of remaining viewing viewpoints that is compared to the converted optical characteristic value for each viewing viewpoint, and extract or calculate the correction coefficient for each viewing viewpoint such that a difference between the optical characteristic value for each viewing viewpoint and the average optical characteristic value for the remaining viewing viewpoints is minimized by comparing the optical characteristic value for each viewing viewpoint with the average optical characteristic value of the remaining viewing viewpoints.

7 . The display device of claim 3 , wherein the optical path conversion unit includes:
a flat reflective panel configured to change optical paths of display images for each viewing viewpoint by primarily reflecting and refracting the display images that are sequentially emitted from the display panel for each viewing viewpoint; and a curved reflective panel configured to condense the optical paths of the display images for each viewing viewpoint in a direction of the optical characteristic detection unit by secondarily reflecting and refracting the display images for each viewing viewpoint that are reflected from the flat reflective panel.

8 . The display device of claim 7 , wherein the optical path conversion unit further includes:
a first position adjustment module configured to fix the display panel by adjusting an arrangement position and horizontal and vertical axis angles of the display panel so that the display panel is disposed toward the flat reflective panel; a second position adjustment module configured to fix the flat reflective panel by adjusting an arrangement position and horizontal and vertical axis angles of the flat reflective panel so that the display images for each viewing viewpoint that are displayed on the display panel are primarily reflected and refracted by the flat reflective panel to the curved reflective panel; and a third position adjustment module configured to fix the curved reflective panel by adjusting an arrangement position and horizontal and vertical axis angles of the curved reflective panel so that the display images for each viewing viewpoint that are primarily reflected and refracted by the flat reflective panel are secondarily reflected and refracted by the curved reflective panel to the optical characteristic detection unit.

9 . The display device of claim 8 , wherein the flat reflective panel is disposed and fixed at a position where lengths of light paths, for each viewing viewpoint, that are displayed on the display panel to be primarily reflected from the flat reflective panel and that are secondarily reflected from the curved reflective panel to be incident to the optical characteristic detection unit are all a same as each other.

10 . The display device of claim 8 , wherein the curved reflective panel is formed in a semicircular or a semi-elliptical curvature trajectory shape so that an inner surface forming a curvature maintains a same distance from the optical characteristic detection unit, and
the optical characteristic detection unit is disposed at a position of a central point of the curvature trajectory formed by the curved reflective panel to maintain the same distance as a whole from the inner surface having the curvature of the curved reflective panel.

11 . A checking system comprising:
a display device configured to display a stereoscopic image through a display panel to which an optical member is attached; and a checking device configured to detect optical characteristics of a display image for each viewing viewpoint of the display panel and configured to generate and output a correction coefficient for each viewing viewpoint according to the optical characteristics for each viewing viewpoint, wherein the checking device is configured to: modulate an optical path of the display image for each viewing viewpoint by reflecting and refracting the display image that is displayed on the display panel for each viewing viewpoint, generate optical characteristic d

Assignees

• Samsung Display Co Ltd

Inventors

• Park Young Min
• Kwon Jae Joong
• Kwon O Jun
• Seo Jin
• SONG A Ree
• Lee Eun Jung
• Lee Ha Young

Classifications

• H04N13/305 Primary

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• H04N13/327

  Calibration thereof · CPC title

• G09G2360/16

  Calculation or use of calculated indices related to luminance levels in display data · CPC title

• G09G2320/0209

  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 · CPC title

• G09G2340/0478

  Horizontal positioning · CPC title