Samsung Display Co., Ltd.

Hyun-wook Cho

Taejoon Kim

Sangkook Kim

Jungmok Park

Min-Hong Kim

Hyungbae Kim

Jaehyun Park

Jiyeong Lee

Jinwoo Park

Jaewoo Choi

Eungkwan Lee

Youngsik Kim

Il Ho Lee

Yeri Jeong

Dongjin Moon

Tae Yong Eom

Jeongheon Lee

Eunsol Seo

Bogeun Yuk

Wankee Jun

A display device includes a display panel and an input sensing panel. The input sensing panel includes pluralities of first and second sensing electrodes and electrostatic induction patterns, each of which is connected to a sensing electrode from one of the pluralities of sensing electrodes and overlaps another sensing electrode from the other one of the pluralities of sensing electrodes. The input sensing panel includes a first area where deviations of mutual capacitances between the first and second sensing electrodes are small and a second area where the deviations are large. The electrostatic induction patterns include first electrostatic induction patterns disposed in the first area and second electrostatic induction patterns disposed in the second area, the second electrostatic induction patterns having a different area from the first electrostatic induction patterns, or the number of second electrostatic induction patterns being different from the number of first electrostatic induction patterns.

Display device

Disclosed is an apparatus for inspecting a defect of a display panel. The apparatus for inspecting includes the display panel that displays an image, an input sensor that is disposed on the display panel and senses an input applied from outside, a sensor driving part that drives the input sensor, and an inspection part that is connected with the sensor driving part, sets a frequency of the input sensor to an inspection frequency, and detects the defect of the display panel based on a change in a jitter occurring when the input sensor is driven at the inspection frequency. The inspection frequency includes a harmonic frequency of a driving frequency of the display panel.

Apparatus and method for defect inspection of display panel

Provided is a display device comprising a display panel, an input sensor including a first sensing area having a first sub-area and a second sub-area, and a first sensor controller configured to drive the first sensing area. Here, the input sensor includes first sensing electrodes disposed in the first sub-area to receive a first transmission signal from the first sensor controller, second sensing electrodes disposed in the first sub-area and intersected with the first sensing electrodes, third sensing electrodes disposed in the second sub-area to receive a second transmission signal having a phase inverted from that of the first transmission signal from the first sensor controller, and fourth sensing electrodes disposed in the second sub-area and intersected with the third sensing electrodes.

In a method for testing an electronic device, the method includes: providing an electronic device including a display layer and a sensor layer on the display layer and configured to operate at a touch drive frequency, the sensor layer including a plurality of first electrodes and a plurality of second electrodes insulatively intersecting the plurality of first electrodes; providing a test signal having a test frequency higher than the touch drive frequency to the plurality of first electrodes; measuring mutual capacitance with the plurality of first electrodes through the plurality of second electrodes; and determining whether or not the sensor layer is defective, based on the mutual capacitance.

Electronic device having a testing method for determining defects in a sensor layer

An input sensing part includes a first sensing electrode, a second sensing electrode that is insulated from the first sensing electrode and crosses the first sensing electrode, a plurality of dummy electrodes that are disposed in dummy areas located between the first and second sensing electrodes, when viewed in a plan view, and a dummy connection pattern that is insulated from the first and second sensing electrodes. The dummy connection pattern crosses the first sensing electrode or the second sensing electrode, when viewed in a plan view, and connects the dummy electrodes.

Input sensing part and display device including the same

An electronic device includes a display panel, an input sensor disposed on the display panel and including a sensing electrode, a first signal line connected to the sensing electrode, and a second signal line connected to the sensing electrode, and a circuit board electrically connected to the input sensor. The circuit board includes a first group signal line electrically connected to the first signal line, a second group signal line electrically connected to the first group signal line and to the second signal line, a first inspection signal line electrically connected to the first group signal line, and a second inspection signal line electrically connected to the second group signal line.

Inspectable electronic device and method of inspecting the same

An electronic device including: a display layer; and a sensor layer that includes: first electrodes in a sensing area and having different lengths; second electrodes in the sensing area; first cross electrodes in the sensing area; second cross electrodes in the sensing area and having different lengths; pads in a peripheral area; first lines extended from the first electrodes at a first side of the sensing area towards the pads; second lines extended from the second electrodes at a second side of the sensing area towards the pads; first cross lines extending from the first cross electrodes towards the pads; and second cross lines extending from the second cross electrodes towards the pads, the first lines being different from the second lines in number, and the first cross lines being different from the second cross lines in number.

Electronic device

A display device includes a display panel, and an input sensor disposed on the display panel. The input sensor includes a detection electrode in an active area of the input sensor, a signal line connected to the detection electrode, a slave chip connected to the signal line and overlapping a non-active area adjacent to the active area, a master chip overlapping the non-active area, and a plurality of connection lines connecting the master chip and the slave chip so that a sensed signal of the detection electrode is delivered to the master chip through the slave chip.

A display device includes a display panel, and an input sensing part disposed on the display panel and in which an active region and a non-active region around the active region are defined. The input sensing part includes a plurality of sensing electrodes dispose in the active region, a plurality of sensing lines electrically connected to the sensing electrodes and disposed in the non-active region, and a guard line, a ground line, and an electromagnetic attenuating line spaced apart from the sensing lines and disposed in the non-active region. The guard line, the ground line, and the electromagnetic attenuating line are disposed at an outside of the sensing lines.

An input sensor short-circuit inspection method including: setting an inspection frequency for detecting a short-circuit of an input sensor comprising a plurality of electrodes; driving the input sensor in an inspection mode at the set inspection frequency; and detecting the short-circuit of the input sensor based on a capacitance charged between adjacent electrodes among the plurality of electrodes of the input sensor in the inspection mode.

Input sensor short-circuit inspection module and input sensor short-circuit inspection method using the same

A display device includes a display panel including a first surface and a second surface opposite to the first surface, the second surface having a first area and a second area surrounding the first area, a conductive sheet disposed on the second surface of the display panel and including a first conductive line disposed in the first area and extending in a first direction and a conductive layer disposed in the second area, a first circuit board bending from the first surface to the second surface to be connected to a first end of the first conductive line, and a second circuit board spaced apart from the first circuit board in the first direction, the second circuit board bending from the first surface to the second surface to be connected to a second end opposite to the first end of the first conductive line.

An electronic device includes a display layer, a sensor layer, and a sensor driver that receives a sensitivity value from a node defined in an area where one electrode intersects one cross electrode, and calculates an input coordinate based on the sensitivity value. When the sensitivity value received from the node is equal to or greater than a first threshold value, the sensor driver calculates the input coordinate based on the sensitivity value. When each of a plurality of sensitivity values received from the node and a plurality of peripheral nodes adjacent to the node is less than the first threshold value and greater than or equal to a second threshold value, the sensor driver calculates the input coordinate based on the plurality of sensitivity values.

Electronic device and driving method of the same for impproving sensitivity values using adjacent nodes

A display device, includes: a display panel including an active region and a peripheral region which are adjacent to each other; and an input-sensing panel on the display panel, the input-sensing panel comprising a first region, a second region, and a third region, which are overlapped with the active region and are sequentially arranged, and a fourth region, which is overlapped with the peripheral region, wherein the input-sensing panel comprises: a sensing electrode in the first and second regions and includes a plurality of conductive lines; and a trace line in the third and fourth regions and connected to the sensing electrode, wherein a density per unit area of the conductive lines is higher in the second region than in the first region.

Input sensing panel and display device including the same

A display device includes a display panel that displays an image, an input sensor that senses an external input, and a sensing controller that controls the driving of the input sensor. The input sensor includes a plurality of scanning electrodes and a plurality of sensing electrodes. The sensing controller simultaneously transmits input scanning signals to at least two scanning electrodes of the plurality of scanning electrodes during a group scanning period. The group scanning period includes a plurality of scanning periods. The sensing controller transmits a compensating signal having a phase different from a phase of at least one of the input scanning signals to at least one sensing electrode of the plurality of sensing electrodes during at least one scanning period of the plurality of scanning periods.

Display device having a sensing controller for controlling the driving of an input sensing layer

A display device including: a display panel configured to display an image in units of a frame; an input sensor disposed on the display panel, and configured to sense an external input; a panel driver configured to control driving of the display panel in response to a synchronization signal; and a sensor controller configured to control driving of the input sensor, wherein the sensor controller receives the synchronization signal from the panel driver and outputs a plurality of transmission signals to the input sensor, and the plurality of transmission signals are varyingly generated based on the synchronization signal.

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Yongin-si, South Korea

Hyun-wook Cho