Lg Display Co., Ltd.

Jin Hyun Jung

Hyun Jin An

Jong Moo Kim

Chang Woo Lee

Sun Yoon Kim

Hyun Wook Kim

Provided is a display device including a display panel configured to display an image, a gate driving circuit connected to the display panel, a data driving circuit connected to the display panel, and a timing controller configured to control the gate driving circuit and the data driving circuit, in which the data driving circuit senses a gate signal output from the gate driving circuit, and a data output timing is controlled based on an operation of another device or a signal generated therefrom together with the sensed gate signal.

Display device and driving method of the same

An electroluminescent display apparatus including a pixel connected to a detection line; a panel driving circuit configured to off-drive a driving element included in the pixel in a detection interval; a reference voltage generating circuit configured to supply a detection reference voltage to the detection line prior to the detection interval, generate a first comparator reference voltage which is higher than the detection reference voltage in the detection interval, and generate a second comparator reference voltage which is lower than the detection reference voltage in the detection interval; a comparator configured to compare the first comparator reference voltage with a voltage of the detection line to generate a first comparison output at a first timing of the detection interval and comparing the second comparator reference voltage with the voltage of the detection line to generate a second comparison output at a second timing of the detection interval; and a logic circuit configured to determine an occurrence of a defect of the pixel based on the first comparison output and the second comparison output and to perform dark spot processing of the defective pixel.

Electroluminescent display apparatus

An electroluminescent display apparatus can include a display panel including the one or more subpixels connected to a data line, a gate line, and a low-level power line. The display apparatus can further include a comparator connected to the one or more subpixels through the data line and the low-level power line to compare a first input voltage from the data line with a second input voltage from the low-level power line to generate a comparison output. The first input voltage is a reference voltage, and the second input voltage is a voltage of a specific node of the one or more subpixels capable of being shifted from an initialization voltage.

Electroluminescent display apparatus and display defect detection method thereof

Disclosed is a transparent display device including an electrochromic element. The electrochromic element includes an electrochromic layer, a counter layer, and an electrolyte layer. An image is displayed through an oxidation-reduction reaction, and the display device is in a transparent mode when a voltage is not applied. The electrochromic layer and the counter layer may further include a core material for changing a color at a high speed.

Transparent display device

A reflective display device is disclosed, which includes first and second substrates facing each other, each of which includes a display area and a reflective area; a display element provided in the display area; and a reflective control element provided in the reflective area, controlling reflectance of externally incident light. The reflective display device may improve a contrast ratio by controlling reflectance of a reflective area when an image is displayed.

Growing community of inventors

Seoul, South Korea

Jin Hyun Jung