Samsung Display Co., Ltd.

Seung Rok Lee

Il Ho Lee

Jin Woo Park

Tae Joon Kim

Jung Mok Park

Kyung Hyun Baek

Yoon Jee Shin

Wan Kee Jun

Ye Rin Oh

Hyeon Seo Cho

An inspection method including: determining first test correction capacitances using mutual capacitances of a first test boundary line channel of a test panel and a candidate coefficient; determining second test correction capacitances using mutual capacitances of a second test boundary line channel of the test panel and the candidate coefficient; determining test channel gaps of the first test boundary line channel using the first and second test correction capacitances; determining reference channel gaps based on mutual capacitances of a test non-boundary line channel; determining the candidate coefficient as a correction coefficient based on the reference and test channel gaps; determining first correction capacitances of a first boundary line channel of the touch panel; determining second correction capacitances of the second boundary line channel of the touch panel; determining channel gaps of the first boundary line channel using the first and second correction capacitances; and inspecting the first boundary line channel.

Method of inspecting a touch panel and a display device for inspecting a touch panel

A driving circuit includes: a display driver configured to generate a vertical synchronization signal; and a sensor driver configured to determine a driving frequency by using the vertical synchronization signal, wherein a pulse polarity of the vertical synchronization signal is inverted when the driving frequency is changed.

Driving circuit, display device including the driving circuit, and method of driving the same

A touch test device for a display device, includes a loading unit receiving a display device. The display device includes a touch sensing unit having driving electrodes and sensing electrodes. A touch driving circuit driving the driving electrodes and the sensing electrodes and detecting touch signal data for the driving electrodes, sensing signal data for the sensing electrodes, and touch data of touch nodes positioned at intersections between the driving electrodes and the sensing electrodes. A test processing circuit calculates parameter values inversely proportional to resistance deviations of the driving electrodes and the sensing electrodes, performs an arithmetic operation on the parameter values and the touch data of the touch nodes to provide corrected touch data, and detects defects in the driving electrodes and the sensing electrodes according to a result of comparing and analyzing the corrected touch data.

Touch test device and method for display device

A display device according to an embodiment of the present disclosure includes: a first pixel and a second pixel successively arranged along a first direction and configured to emit light of different colors, a first color filter disposed on the first pixel, and a second color filter disposed on the second pixel so as to be adjacent to the first color filter. The second color filter is expanded in a direction toward the first pixel at a boundary between the first pixel and the second pixel.

Display device

A display device that includes a display panel to display an image; a touch panel on the display panel; a spacer layer between the display panel and the touch panel; and a window attached onto the touch panel, wherein the display panel and the touch panel are relatively movable.

Growing community of inventors

Yongin-si, South Korea

Seung Rok Lee