Lg Display Co., Ltd.

Electronics and Telecommunications Research Institute

HyunGon Kim

DukKeun Yoo

Daeyoung Seo

Ki-Uk Kyung

Jun Seok Park

Hun Jang

Hee Sook Shin

Jongsung Kim

Jeong Mook Lim

Seeun Kim

YoungIn Jang

Yo-An Lim

Dukkeun Yoo

A display device according to an example includes a plurality of sub pixels disposed on a substrate, and a plurality of touch units disposed on the substrate. Each sub pixel can include a driving transistor, a light emitting diode, and a pixel electrode connecting the driving transistor and the light emitting diode. Each touch unit can include a touch sensing transistor and a touch electrode connected to the touch sensing transistor, where the pixel electrode and the touch electrode are disposed on the same layer. Accordingly, the pixel electrode and the touch electrode are disposed on the substrate to sense the touch by a self-capacitance manner.

Display device

A display device can include a substrate including a plurality of pixels; a plurality of light emitting diodes disposed in each of the plurality of pixels; a color conversion member disposed over at least two light emitting diodes among the plurality of light emitting diodes in one pixel among the plurality of pixels; and a light shielding pattern disposed over at least one light emitting diode among the plurality of light emitting diodes in the one pixel for forming a black sub pixel that does not emit light outside of the display device. Also, each of the plurality of pixels includes a first sub pixel, a second sub pixel, a third sub pixel, and one or more black sub pixels.

A display panel includes common electrodes in an active area and a first driving circuit on one side of the active area and a second driving circuit on the other side of the active area. First read-out lines are electrically connected to the common electrodes, respectively, and to the first driving circuit. Second read-out lines are electrically connected to the second driving circuit, and to the first read-out lines, respectively. An output signal of phototransistors may be detected using read-out lines connected to a common electrode serving as a touch sensor, such that touch sensing and photosensing can be performed using the shared read-out line. No disconnection areas are provided between the read-out lines driven by the different driving circuits, or the disconnection areas are distributed. Abnormalities in image quality due to the disconnection areas are prevented, and a sensing function using the shared read-out lines is provided.

Display panel

The disclosure relates to display devices which include data lines for transferring driving signals, gate lines for transferring scan signals, a plurality of pixel electrodes respectively disposed in a plurality of subpixels, common electrodes supplying a display common voltage upon display driving, readout lines connected with the common electrodes, and photo transistors including a gate, a first, and a second electrode. The second electrode of each of the photo transistors is electrically connected with the common electrode. The first electrode and gate electrode of each of the photo transistors is electrically connected with a common electrode or a gate line for display driving. Thus, it is possible to operate photo sensors to perform photo sensing even without all or some of the signal lines necessary for the operation of the photo sensors, thereby increasing the aperture ratio and transmittance.

Display device and driving circuit

A driving circuit, a display panel, and a display device are provided. The display panel comprises a plurality of common electrodes; a plurality of phototransistors, two or more phototransistors among the plurality of phototransistors being disposed in an area corresponding to each of the plurality of common electrodes; a plurality of photo-control lines electrically connected to a gate electrode of at least one phototransistor among the plurality of phototransistors; a plurality of photo-driving lines electrically connected to a first electrode of at least one phototransistor among the plurality of phototransistors, and a plurality of read-out lines, each of the plurality of read-out lines being electrically connected to a single common electrode among the plurality of common electrodes, and electrically connected to second electrodes of all of the phototransistors disposed in the area corresponding to the single common electrode to which each of the plurality of read-out lines are electrically connected. According to the present disclosure, an increase in non-open areas is minimized and the magnitude of the output signal of the phototransistor detected through the read-out line is increased, thereby improving photosensing performance.

Driving circuit, display panel, and display device including phototransistors

A display panel, a display device, and a driving circuit including both a touch sensor configuration and a photosensor configuration are disclosed. The driving circuit comprises a multi-sensing circuit electrically connected to a plurality of common electrodes, disposed in a display panel, through a plurality of read-out lines disposed in the display panel; and a photo-driving circuit driving a plurality of photo-driving lines and a plurality of photo-control lines through which a photo-driving signal and a photo-control signal are transferred to a plurality of phototransistors disposed in the display panel, wherein each of the plurality of phototransistors comprises a gate electrode to which the photo-control signal is applied, a first electrode to which the photo-driving signal is applied, and a second electrode serving as a signal output node, with a signal being output to the second electrode in response to illumination light, and the multi-sensing circuit receives the signal, output from the second electrode of each of the plurality of phototransistors, through a corresponding read-out line among the plurality of read-out lines. A high aperture ratio is obtained since electrode and line structures for touch sensing and photosensing are efficiently designed.

Display panel, display device, and driving circuit

Disclosed is a haptic feedback case for electronic equipment, including: a main body configured to accommodate the electronic equipment; a communication unit configured to receive haptic generation information from the electronic equipment; a filmy type actuator configured to generate haptic sensations; and a control unit configured to operate the film type actuator according to the haptic generation information input from the communication unit.

Growing community of inventors

Gyeonggi-do, South Korea

HyunGon Kim