Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Man-Seung Cho

Joo-Hyung Lee

Kee-Han Uh

Sang-Jin Pak

Jong-Woung Park

Young-Ok Cha

Hyung-Guel Kim

Myung-Woo Lee

Young-Jun Choi

Ho-Suk Maeng

Sang-jin Park

Soon-Dong Kim

Dong-jin Jeong

Jin-hee Lee

A display device includes a display panel, a source driving part, a gate driving part, a readout part and a pulse generating part. The display panel includes an array substrate on which a source line and a gate line are formed, and an opposite substrate on which a common electrode is formed. The readout part is electrically connected with at least one of the lines of the array substrate and the common electrode of the opposite substrate, and reads out a detection signal during an elimination period of a frame period. The pulse generating part outputs a control pulse for driving the readout part during the elimination period. Accordingly, a detection signal is read out through lines or a common electrode that are/is formed for displaying an image, so that an aperture ratio may be increased, and a manufacturing process thereof may be simplified.

Display device and method of driving the same

In a touch sensible display device, a first sensing unit is connected to a row sensor data line and outputs a first sensing signal according to a touch, and a second sensing unit is connected to a column sensor data line and outputs a second sensing signal according to the touch. A sensing signal processor alternately applies a reset voltage to the row sensor data line and the column sensor data line and generates a sensing data signal according to the first sensing signal and the second sensing signal, and a touch determiner processes a sensing data signal to generate touch information.

Display device and method of driving the same for alternately applying a reset voltage to row and column sensor data lines

A method of driving a display device having a plurality of pixels, a plurality of sensing units, and a plurality of sense data lines to which the plurality of sensing units are connected, includes: reading sense signals from the sense data lines; determining whether or not the display has been touched and the number of touches, generating X-axis and Y-axis position data based on the sense signals, and determining, when the quantity of touches is plural, whether a plurality of touches are sequentially generated, and the touch position of each.

The present invention relates to a touch sensitive display device, the display device including a display panel unit, a sensing unit formed on the display panel unit, receiving a sensor control signal, and generating a sensor data signal based on a touch exerted on the display panel unit, an output unit generating a sensing signal based on the sensor data signal from the sensing unit, and a compensation unit adjusting the sensor control signal such that the sensing signal is bounded in a predetermined range.

Touch sensitive display device and method thereof

In a light sensor test unit, a test circuit is built in a display panel and connected to an output node of a light sensor which senses an intensity of an external light. When external light having a predetermined intensity is provided to the light sensor, the test circuit outputs a driving signal in response to a sensing signal output from the output node. A test pixel part includes pixels selected from a plurality of pixels arranged in the display panel and receives the driving signal from the test circuit to display a gray-scale corresponding to the driving signal. A brightness measurer measures a brightness corresponding to the gray-scale displayed in the test pixel part to compare the measured brightness with a predetermined brightness, thereby testing whether the light sensor built in the display panel is normally operated.

Light sensor test unit, method of testing light sensor using the same and display apparatus

A display device includes: a plurality of sensing data lines; a plurality of sensing units that output sensing signals through the plurality of sensing data lines; a signal selector that selects one sensing signal among the plurality of sensing signals; an automatic voltage adjusting unit that, when one sensing signal is selected by the signal selector, performs a controlling operation so as to allow a magnitude of the selected sensing signal to be in a predetermined range; and a voltage generator that adjusts the magnitude of the voltage applied to the sensing data lines based on a control signal output from the automatic voltage adjusting unit. According to the voltage adjusting operation, the sensing signal output through the sensing data line is always in an appropriate range. As a result, the touch determining operation on the sensing units can be accurately performed, so that it is possible to improve reliability of the sensing units.

Display device and voltage adjusting method therefor

A display device may include a display panel, a plurality of pixels that are disposed on the display panel, a plurality of sensing units that are disposed on the display panel to generate sensing signals based on touch of the display panel, a sensing signal processor that receives the sensing signals and performs predetermined signal processes to generate sensing data, and a touch detection unit. The touch detection unit may include a first controller that determines, based on the sensing data from the sensing signal process, whether or not there is a touch occurrence of the sensing units and whether or not the sensing signal is in an appropriate state. The touch detection unit may also include a second controller that determines the touch occurrence and touch positions on the sensing units based on the sensing data and controls the sensing signals to be in the desired range.

Display device and method of controlling touch detection unit

A touch position detecting method, a device using the method, and a touch screen display device having the device are disclosed. A touch sensing unit senses a touch event and outputs a sensing data. A reference update unit updates a reference data with an n-th frame sensing data provided from the touch sensing unit, based on a predetermined update signal. A position detecting unit detects the touch position by using the reference data and an (n+i)-th frame sensing data from the touch sensing unit. Therefore, the touch position is easily detected by determining a difference between the reference data and the sensing data at a certain time.

Touch position detecting device, method of detecting touch position and touch screen display device having the same

According to an embodiment of the present invention, a display device may include a display panel, a plurality of pixels disposed on the display panel, a plurality of first sensing units disposed on the display panel and generating first sensing signals in response to a touch exerted on the display panel, and a sensing signal processor configured to process the first sensing signals and generate second sensing signals for a plurality of frames, the sensing signal processor determining whether a touch occurs based on the second sensing signals for the plurality of frames.

Touch sensitive display device and driving apparatus thereof, and method of detecting a touch

A sensing circuit is provided that senses an externally provided pressure on a panel, and includes a sensing capacitor, a first switching element, a second switching element and a third switching element; where the sensing capacitor includes a sensing electrode on the first substrate, the insulating layer and the opposite electrode; the sensing capacitor varies a capacitance based on the externally provided pressure; the first switching element is electrically connected to the sensing electrode to charge the sensing capacitor based on a first switching signal; the second switching element outputs a current based on a second switching signal and a first voltage; the third switching element is electrically connected to the sensing electrode to control the current based on the variation of the capacitance of the sensing capacitor to generate a sensing signal; and where a thickness is decreased, and an image display quality is improved.

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Seoul, South Korea

Man-Seung Cho