Au Optronics Corporation

Meng-Hsiang Chang

Hsin-hung Lee

Yao-Jen Hsieh

Chi-Wen Chen

Mei-Sheng Ma

Heng-Sheng Chou

Chun-Huai Li

Jen-Chien Peng

Yung-Hsien Ho

Chi-Mao Hung

Kuo-Hsing Cheng

Li-Wei Shih

Yuan-Chun Wu

Chien-Jen Chen

Kun-Hua Tsai

Shi-Yi Liao

A pixel unit, method for sensing touch of an object, and a display apparatus incorporating the same are provided. The display apparatus includes a data line. The pixel unit includes a first switch circuit electrically connected to the data line and a sensing circuit electrically connected to the first switch circuit. The sensing circuit generates a signal in response to the touch of the object, while the signal is transmitted through the data line with the first switch circuit turned on. In addition, the display apparatus further includes a readout line. The pixel unit further includes a second switch circuit electrically connected to the readout line. The sensing circuit is electrically connected to the second switch circuit. In a first time period, the sensing circuit receives a reference voltage via the first switch circuit. Then the signal generated by the touch of the object is transmitted through the readout line via the second switch circuit in a second time period.

Pixel unit, method for sensing touch of an object, and display apparatus incorporating the same

A touch panel and a portable electronic device thereof are provided. The present invention can accurately determine a position touched by a user on the touch panel by judging whether or not a potential voltage value between a reference capacitor and a sensing capacitor of a pixel having a sensing area being changed, or to determine whether a switch of a pixel having the sensing area being conducted.

Touch panel and portable electronic device thereof

A display apparatus and a drive circuit for adjusting a screen refresh rate of the display apparatus and a method thereof are disclosed. The display apparatus comprises an OLED diode display array and a drive circuit. The drive circuit comprises a detection unit, a clock generating unit, and a timing control unit. The detection unit determines whether a plurality of frames displayed by the OLED diode display array are configured as a dynamic frame. The detection unit generates a first control signal when the displayed frames are not configured as a dynamic frame, and the detection unit generates a second control signal when the displayed frames are configured as a dynamic frame. The clock generating unit generates a clock signal, the frequency of which is a first frequency in response to the first signal, or a second frequency in response to the second signal. The first frequency is greater than the second frequency. The timing control unit sets the screen refresh rate of the display apparatus in response to the frequency of the clock signal.

Drive circuit, display apparatus, and method for adjusting screen refresh rate

The present invention relates to a liquid crystal display (LCD). The LCD includes a plurality of display units formed with a first substrate, a color matrix formed on the first substrate, and a common electrode formed on the color matrix, a second substrate spaced from the first substrate, a pixel electrode matrix formed on the second substrate, a liquid crystal material disposed between the common electrode and the pixel electrode matrix. The LCD includes a touch sensing member integrated onto the color matrix of the first substrate.

Capacitance type touch panel

The present invention relates to a touch sensing device. In one embodiment, the touch sensing device includes a plurality of sensor units arranged in the form of an M&#xd7;N matrix having M rows and N columns. Each sensor unit has a first touch sensor, S, a second touch sensor, S, a third touch sensor, S, and a fourth touch sensor, S, arranged in the form of a 2&#xd7;2 matrix, where the first touch sensor Sis connected to the third touch sensor S, and the second touch sensor Sis connected to the fourth touch sensor S, respectively. The touch sensing device further includes a number of control lines having M row control lines and N column control lines. Each row control line is adapted for connecting sequentially the sensor units of a corresponding row, and each column control line is adapted for connecting sequentially the sensor units of a corresponding column.

Touch sensor layout design

A control element of an organic electro-luminescent display includes a first transistor, a second transistor and a capacitor. The first gate electrode of the first transistor is electrically connected to a scan line, and the first source/drain electrode of the first transistor is electrically connected to a data line. The second gate electrode of the second transistor is electrically connected to the second source/drain electrode of the first transistor. The third source/drain electrode of the second transistor is electrically connected to a working voltage, and the fourth source/drain electrode of the second transistor is electrically connected to a light emitting diode. One end of the capacitor is electrically connected to the second gate electrode. The material of the dielectric layer of the capacitor is different from the material of the gate dielectric of one of the first transistor and the second transistor.

Control element of an organic electro-luminescent display and manufacturing process thereof

A control circuit for use in an active matrix organic light emitting diode (AMOLED) panel comprising a memory unit and a voltage control unit is provided. The operating time of the AMOLED panel is counted and saved by the memory unit. According to the memory unit's information, the voltage control unit decides a common voltage. The purpose of the present invention is to reduce the common voltage when the turn-on time of the AMOLED panel is increased so that the increase in the voltage difference between the two terminals of an organic light emitting diode (OLED) of the AMOLED panel may be compensated. Thus, the present invention may provide a stable driving current for the OLED and a stable picture definition for the AMOLED panel.

Growing community of inventors

Hsinchu, Taiwan

Meng-Hsiang Chang