Silicon Works Co., Ltd.

Skhynix Inc.

Dong Hyun Hwang

Hyun Ho Kim

Se Won Lee

Seung Hoon Lee

Jae Kwan Lee

Won Seok Hwang

Jung Eun Song

The present invention relates to a pixel sensing device capable of compensating for an error included in a test current itself by supplying, when a pixel current is sensed, the test current used in the sensing of each channel circuit error.

Pixel sensing device and panel driving device

Disclosed is a sensing circuit of a display device for external compensation of an OLED. The sensing circuit includes a current receiving unit configured to receive a pixel current containing a leakage current, convert the pixel current at a preset current ratio, and output the converted pixel current; a current source unit; a current sinking unit; a current detection unit; and a detection signal output unit configured to sample an offset voltage corresponding to the leakage current using the detected current.

Sensing circuit of display device for sensing pixel current

The present invention relates to technology for driving a display device, and provides technology which, in sensing pixels arranged in a panel, processes a signal having a wide range by using a low-voltage element.

Pixel sensing apparatus and panel driving apparatus

The present invention provides a technology of simultaneously sensing characteristics of a plurality of OLED pixels. Further, a current mirroring circuit for sensing characteristics of OLED pixels can be applied to fields other than sensing characteristics of OLED pixels, and the current mirroring technology can output sensing currents having a uniform magnitude within a predetermined error range to a plurality of output terminals.

Current mirroring circuit, panel driving apparatus and OLED driver

An analog to digital converting device includes a first digital conversion (ADC) circuit configured to convert an inputted analog signal into a first digital signal, a first multiplying digital to analog converting (MDAC) circuit configured to amplify a difference between a first converted signal and the inputted analog signal, a second ADC circuit configured to convert an output of the first MDAC circuit into a second digital signal, a second MDAC circuit configured to amplify difference between a second converted signal converted from the second digital signal and the output of the first MDAC circuit, a third ADC circuit configured to convert an output of the second MDAC circuit into a third digital signal, and a common amplifying circuit shared by the first and the second MDAC circuits, wherein the common amplifying circuit consumes current based on which MDAC circuit the common amplifying circuit operates with.

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Seoul, South Korea

Dong Hyun Hwang