Lg Display Co., Ltd.

Kt Corporation

Hoon-Bae Kim

Sung-Chul Kim

Ji-Hyun Jung

Cheol-Se Kim

Min-Jae Lee

Ju-Han Kim

Yong-Chan Park

Byung-Koo Kang

Gap-Chun Back

Seung-Seok Oh

Kang-Suk Woo

Hee-Son Park

A touch display device comprises a controller to generate a touch sync signal for controlling timing of a touch sensing period and a display period. A touch panel has a plurality of touch electrodes in a display area of the touch display device. The touch panel generates touch sensing signals indicating whether or not a touch occurs during the touch sensing period. A gate driver supplies gate pulses to gate lines of the touch panel during the display period and supplies a gate line auxiliary drive signal from the first transfer line onto the gate lines during the touch sensing period that mimics the touch drive signal. One or more auxiliary lines supply a supplemental auxiliary drive signal during the touch sensing period that mimics the touch drive signal.

Touch sensitive display device having auxiliary lines supplying an auxiliary drive signal

Display device having a touch panel with auxiliary lines supplying supplemental auxiliary drive signals

The liquid crystal display device includes a first substrate and a second substrate, a gate line and a data line on the first substrate to define a pixel region, a pixel transistor formed at the intersection of the gate line and the data line, a pixel electrode formed in the pixel region, a first storage capacitor connected to the pixel electrode, a switching line formed on the first substrate, a read out line formed on the first substrate, a second storage capacitor formed on the first substrate, a switching transistor including a gate electrode connected to the second storage capacitor, a drain electrode connected to the read out line, and a source electrode connected to a driving voltage line, a first column spacer formed on the second substrate, and a common electrode formed on the first column spacer thereby forming a sensing capacitor.

Liquid crystal display device having sensing capacitor for touch and method for fabricating the same

A photo-sensing type touch panel embedded liquid crystal display device and a method for driving same are disclosed, where the device includes a liquid crystal panel includes a touch sensor provided in each of n pixels, where n is a Natural Number; a ROIC readout part which receives a readout voltage value from readout lines provided in the touch panel embedded liquid crystal panel; an ADC conversion part which converts an analog voltage value transmitted to the ROIC readout part into a digital value; a calculation part which calculates a calculated value by subtracting a corresponding value detected from the ADC conversion part when no-backlight is applied from a value detected from the ADC conversion part when a backlight is applied; and a position detection part for detecting a touch point on the photo-sensing type touch panel if the calculated value from the calculation part is beyond a predetermined value.

Photo-sensing type touch panel embedded liquid crystal display device and method for driving the same

A system and method for buying goods and billing agency using short message service are disclosed. If a purchaser transmits goods information to a mobile communication service system using short message service of a mobile phone, the mobile communication service system generates a certification code corresponding to the goods information and transmits it to a shopping mall server and the mobile phone. Then, the shopping mall server and the mobile phone exchange messages and run mutual authentication. Thereby, system construction expense for selling goods and service is decreased, purchasing procedure is simple, and the safe purchase can be done by mutual authentication using the certification code.

System and method for buying goods and billing agency using short message service

Growing community of inventors

Seoul, South Korea

Hoon-Bae Kim