Lg Display Co., Ltd.

Hyundai Motor Company

Kia Motors Corporation

Industry-University Cooperation Foundation Hanyang University

Haksu Kim

DaeSung Jung

Hwanjoo Lee

Seongho Cho

Dong Hee Han

Seungwoo Hong

Yeongseop Park

Jinho Lim

Hyungbok Lee

JaeHoon Park

Cheolhwan Lee

Jaedo Lee

Kyoungdon Woo

Myoungho Sunwoo

Kyunghyun Jeon

Sujin Baek

SeongWook Choi

Donghyuk Jung

Wonkyu Ha

Kwanghyun Baek

KwangHyun Baek

HwanJoo Lee

HongMan Moon

HoSeop Shin

Yoonji Choi

A display device may include sub-pixels, each sub-pixel including: a first mode sub-pixel having a first viewing angle and including a first emitting element; a second mode sub-pixel having a second viewing angle and including a second emitting element; a driving transistor; a first emitting control line supplying a first emitting control signal; a second emitting control line supplying a second emitting control signal; a first switching transistor supplying a reference voltage to a storage capacitor by being controlled by the first emitting control signal; a second switching transistor supplying a reference voltage to a storage capacitor by being controlled by the second emitting control signal; a first control transistor connecting the first emitting element and the driving transistor by being controlled by the first emitting control signal; and a second control transistor connecting the second emitting element and the driving transistor controlled by the second emitting control signal.

Display device comprising sub-pixels for controlling viewing angle

A display apparatus may include a gate driving circuit configured to output a first light emission signal and a second light emission signal; a first pixel circuit including a first light emitting element configured to emit light based on the first light emission signal and a second light emitting element configured to emit light based on the second light emission signal; and a second pixel circuit including a third light emitting element configured to emit light based on the first light emission signal and a fourth light emitting element configured to emit light based on the second light emission signal. The display apparatus may further include a first lens disposed on each of the first light emitting element, the second light emitting element, and the third light emitting element, and at least one second lens different from the first lens and disposed on the fourth light emitting element.

Pixel circuit comprising a plurality of light emitting elements and display apparatus including the same

Disclosed are a display device and a method for operating pixels of the display device. The display device comprises: a light-emitting element; and a pixel circuit configured to control the light-emitting element, wherein the pixel circuit includes: a capacitor connected to and disposed between a first node and a second node; and a driving transistor including a gate electrode connected to the second node; a first electrode receiving a high-potential driving voltage; and a second electrode connected to a third node, wherein the pixel circuit is configured such that the same voltage is supplied to the first node and the second node during at least a portion of an operation period of the pixel circuit. Thus, occurrence of a reference voltage related short-circuit in the light-emitting element of the pixel circuit is suppressed to prevent occurrence of defective image display in each pixel and to improve reliability thereof.

Display device and method for operating pixels of the display device

A display device includes a light-emitting element; a capacitor connected to and disposed between a first node and a second node; a first transistor including a first electrode connected to a reference voltage supply line and a second electrode connected to the first node, and supplying a reference voltage to the first node in response to a light-emission control signal of an n-th pixel row; a second transistor including a first electrode connected to the reference voltage supply line and a second electrode connected to the second node, and supplying the reference voltage to the second node in response to a first scan signal of an (n−1)-th pixel row; and a driving transistor including a gate electrode connected to the second node, a first electrode receiving a high-potential driving voltage, and a second electrode connected to a third node. Thus, for example, occurrence of a reference voltage related short-circuit in the light-emitting element of the display device is suppressed to prevent occurrence of defective image display in each pixel and to improve reliability thereof.

Pixel circuit and display device including the same

A display apparatus includes a mode controller configured to generate a first control signal and a second control signal by using a gate-off voltage and a gate-on voltage; a gate driving circuit configured to generate an emission signal; a first pixel circuit including a driving transistor, a first transistor receiving the first control signal, a second transistor receiving the second control signal, a third transistor receiving the emission signal, a first light emitting element connected to the first transistor, and a second light emitting element connected to the second transistor; a first lens disposed on the first light emitting element; and a second lens disposed on the second light emitting element.

Display panel and display apparatus

A method of calculating an exhaust gas recirculation (EGR) rate using combustion pressure of a cylinder of an internal combustion engine includes: detecting, by a pressure sensor, the combustion pressure of the cylinder in real time; calculating, by a processor, a data characteristic of a combustion pressure waveform per cycle through principal component analysis based on the detected combustion pressure of the cylinder; calculating, by the processor, a moment of the combustion pressure waveform per cycle by calculating a probability distribution based on the detected combustion pressure of the cylinder; calculating, by the processor, the EGR rate using the calculated data characteristic, the calculated moment, and engine operating conditions; and controlling, by the processor, the EGR rate based on the calculated EGR rate and a target EGR rate.

Method of calculating exhaust gas recirculation rate using combustion pressure of cylinder

A data control circuit includes a MUX driver that electrically connects a first channel of a data driver and one of the pixels in a first pixel group of a display panel in response to a first control signal, and electrically connects a second channel of the data driver and one of the pixels in a second pixel group of the display panel in response to a second control signal; and a MUX controller that outputs the first and second control signals.

Data control circuit and flat panel display device including the same

A disclosed display device comprises a data line of a display panel, a first switching circuit of the display panel, the first switching circuit including an input and a transistor to pass a test voltage from the input of the first switching circuit to a transistor electrode of the transistor, and a bridge pattern of the display panel, the bridge pattern electrically connecting the transistor electrode to the data line, the bridge pattern being in a different layer of the display panel than the transistor electrode.

Display device comprising display panel with bridge patterns

An organic light emitting device is disclosed. The organic light emitting device includes a display unit including a plurality of subpixels, a host memory unit that stores image data received from the outside by the frame, a data adjusting unit that fetches the image data frames stored in the host memory unit by the bit and converts one frame into a plurality of subfields and one display memory unit that stores the image data frame converted into the plurality of subfields by the data adjusting unit. When the data adjusting unit converts the frame into the plurality of subfields, the data adjusting unit inserts a black time into at least one of the plurality of subfields.

Organic light emitting device

Growing community of inventors

Daegu, South Korea

Haksu Kim