Samsung Display Co., Ltd.

Samsung Displayco., Ltd.

Hyungwoo Yim

Juneyoung Lee

Jae-Seob Chung

Seungho Park

Hoisik Moon

Seyun Kim

Mingyu Kim

Il-Joo Kim

Seung Jun Jeong

Jung-Suk Han

Kang-Hyun Kim

Hoi Sik Moon

Jong-Hee Na

Jae-Seok Choi

Jinoh Song

Yoonkyung Park

Kyung-sik Joo

Huisu Kim

Hakmo Choi

Taehyung Kim

Hak-Mo Choi

Min-Yup Chae

Hyeonyong Jang

Min-yup Chae

Minyup Chae

A method of detecting a stain of a display panel is disclosed that includes capturing a first color image of the display panel, capturing a second color image of the display panel, generating a merged image by merging a color coordinate map of the first color image and a color coordinate map of the second color image, generating a background image of the merged image by a morphology filtering, generating a flattened image by operating the merged image and the background image and detecting an area of the flattened image in which a color coordinate value exceeds a threshold value as a stain area.

Method of detecting stain of display panel, method of compensating stain of display panel including the same and display apparatus configured to perform the same

An inspection system for inspecting a display device including pixels includes a camera for capturing the display device and providing a sensing image signal and an inspection device for receiving the sensing image signal and outputting a compensation signal for compensating for luminance of a defective pixel. The inspection device includes an image detector outputting a sensing input signal corresponding to the sensing image signal, a defect coordinate detector detecting the defective pixel based on the sensing input signal and outputting defect coordinates indicating a position of the defective pixel, an image analyzer analyzing consistency of the defect coordinates based on the sensing image signal and the sensing input signal and outputting final coordinates, and a defect compensation calculator outputting a compensation signal for adjusting luminance of compensation pixels adjacent to the defective pixel from among the pixels based on the final coordinates.

Inspection system for inspecting display device, display device for compensating for defective pixel and defective pixel compensation method

A test method includes generating first image data by imaging a display panel including pixels, generating boundary data by detecting a spot area in the display panel based on the first image data, generating second image data by deblurring the first image data with respect to a boundary area disposed at a boundary of the spot area based on the boundary data and generating correction data by setting a correction area including the boundary area based on the second image data.

Test method, test apparatus and display device

A vision inspection apparatus includes an inspection controller which displays a grid pattern with a plurality of gray levels on a display panel, an imaging converter which drives a charge-coupled device with a predetermined or set exposure-time and converts the grid pattern displayed on the display panel into a grid pattern signal, a charge calculator which calculates a charge amount per unit time for each color of a reference gray level using a reference gray level signal, included in the grid pattern signal, and the set exposure-time, and an exposure-time calculator which calculates an optimum exposure-time for each color of the reference gray level based on a target charge amount of the reference gray level.

Vision inspection apparatus and a method of driving the same

In a method of generating correction data for a display device, measured tristimulus data at a maximum gray level are obtained, measured luminance and color coordinate profiles are obtained based on the measured tristimulus data, a target color coordinate profile is determined based on the measured color coordinate profile, measured red, green and blue maximum luminances of each pixel are obtained, a maximum target luminance of the each pixel is determined such that red, green and blue luminances of the each pixel become lower than or equal to the measured red, green and blue maximum luminances, respectively, a final target luminance profile is determined based on the measured luminance profile and the maximum target luminance of the each pixel, and correction data may be generated and stored in the display device based on the final target luminance profile and the target color coordinate profile.

Method of generating correction data for display device, and display device storing correction data

In a method of generating correction data for a display device, an image is captured, a plurality of correction values are obtained at a plurality of sampling positions based on the captured image, whether a frequency criterion about a total number of overflow correction values is satisfied is determined, the overflow correction values being the correction values outside at least one reference range whether an adjacency criterion about a number of the overflow correction values at sampling positions adjacent to a sampling position of the each of the overflow correction values is satisfied is determined, a bit shift operation is selectively performed on the plurality of correction values according to whether the frequency and/or adjacency criterion is satisfied, and correction data representing the plurality of correction values on which the bit shift operation is performed, and bit shift information about the bit shift operation are stored in the display device.

A 3D display device is provided. The 3D display device includes a display panel and a liquid crystal lens panel. The display panel operates in one of a 2D mode for displaying a 2D image, a 3D mode for displaying a 3D image, and a coincident mode for displaying the 2D image and the 3D image. The liquid crystal lens panel is disposed on the display panel. The liquid crystal lens panel is configured to refract the 3D image through a third region of the liquid crystal lens panel and to transmit the 2D image without refracting the 2D image when the display panel operates in the coincident mode.

Three-dimensional (3D) display device

A display apparatus includes, a first pattern included in a first layer, a second pattern included in a second layer, a first test pattern including a plurality of first lines extending in a first direction and having a first width, and being spaced apart from each other, a second test pattern included in the second layer, including a central line and a plurality of second lines connected to the central line, wherein the plurality of second lines extend in the first direction have a second width, and are spaced apart from each other, and wherein at least one of the second lines is electrically connected to the first lines, and a shift tester configured to apply a test voltage to the central line to determine a degree by which the second pattern is shifted with respect to the first pattern by measuring the voltages at the first lines.

Display apparatus, method of driving the same and method of manufacturing the same

There is provided a display apparatus including a display panel including a plurality of pixels connected to a plurality of data lines and a plurality of gate lines, a driving circuit configured to control the display panel to display an image on the display panel, and to output a wake signal having a pulse period according to an operating mode, a backlight unit configured to supply light to the display panel, and a light source driving unit configured to supply a light source power voltage to the backlight unit, wherein the light source driving unit is configured to generate the light source power voltage based on the pulse period of the wake signal.

Display apparatus and method of controlling luminance thereof

A display device includes a mapping unit for mapping main color data having information on three main colors to generate mapped main data including red, green, and blue information and mapped white data including white information, a compensation lookup table for storing a plurality of gamma compensation values, a gamma compensator for generating compensated main data obtained by gamma-compensating the mapped main data based on a first gamma compensation value corresponding to first gamma white data from among the plurality of gamma compensation values and a second gamma compensation value corresponding to second gamma white data from among the plurality of gamma compensation values by referring to the compensation lookup table, a renderer for sub-pixel-rendering the mapped white data to generate rendered white data, and a splitter for converting the rendered white data into the first and second gamma white data based on different first and second gamma curves, respectively.

Growing community of inventors

Hwaseong-si, South Korea

Hyungwoo Yim