Chunghwa Picture Tubes, Ltd.

Ali Corporation

Ching-Chung Cheng

Wen-Rung Huang

Hsu-Pin Kao

Yuan-Chi Lin

Kuo-Kai Lin

Sheng-Chi Lee

Yu-Ju Chen

Sheng-Wen Hsu

Ming-Ta Lee

Hsiang-Hui Tseng

Yen-Ting Shen

Yu-Wen Chen

Wei-Chun Kao

Cheng-Min Chen

Shun-An Lin

A deskew circuit for a differential signal is provided. A first common mode voltage generating circuit generates a first common mode voltage signal according to first and second differential input signals. A voltage buffer circuit is coupled to the first common mode voltage generating circuit and has an input impedance higher than a preset value, and buffers the first common mode voltage signal and the first and second differential input signals to generate a second common mode voltage signal, a third differential input signal, and a fourth differential input signal. A second common mode voltage generating circuit is coupled to the voltage buffer circuit and generates a third common mode voltage signal according to the third and fourth differential input signals. An output circuit generates a deskew output signal according to the third and fourth differential input signals and the second and third common mode voltage signals.

Deskew circuit for differential signal

An overvoltage protection device including an output stage, a first switch and a first load providing circuit is provided. The output stage has a first input terminal to receive a first signal, and generates an output signal at an output terminal of the output stage according to the first signal. A first terminal of the first switch is coupled to the first input terminal of the output stage, and a control terminal of the first switch receives a second signal. The first signal is the delayed second signal. The first load providing circuit is coupled to a second terminal of the first switch. The first load providing circuit provides an impedance to the first input terminal when the first switch is turned on.

Overvoltage protection device

An envelope detection device for detecting a transmission signal of a high speed serial communication includes: an operation circuit, for receiving the transmission signal and generating a set of operated outputs according to the transmission signal and at least one reference signal; a reference signal generating circuit coupled to the operation circuit, for providing the reference signal to the operation circuit, wherein the reference signal generating circuit is operable to provide the reference signal with different voltage levels; and a comparing circuit coupled to the operation circuit, for comparing the set of calculated outputs to generate a comparison result. The envelope detection device detects a transmission state and a disconnect state of the high speed serial communication according to the comparison result generated based on the reference signals at different voltage levels.

Envelope detection device and related communication device

A plasma display panel with a plurality of non-transparent display electrode pairs and a method of forming the same. Each electrode of every non-transparent display electrode pair is separated from but close to one another for effective discharging. For effective displaying, it is necessary that the area of the non-transparent display electrodes is smaller than the area of the panel. In the present invention, the shape of the non-transparent display electrodes are manufactured in a shape with a plurality of openings, such as a ladder or a chain.

Plasma display panel and method of forming the same

The present invention provides a method for improving the adhesion capability between the &#x3c0;-type bus electrode and ITO (indium tin oxide) transparent conductive layer. The method includes an ITO transparent conductive layer as an ITO electrode is formed on the glass substrate by sputtering method. Then, a photoresist layer with a cavity pattern is formed on the portion of the ITO transparent conductive film. Next, an etching process is used to remove portion of the ITO transparent conductive film to form a cavity within the ITO transparent conductive film. Then, after removing the photoresist layer, a silver paste as a bus electrode is formed on the glass substrate and on the ITO transparent conductor film to form a pi (&#x3c0;) type bus electrode by print method. Due to the pi side of the pi-type electrode is formed on the cavity thereby the adhesion capability between the pi-type bus electrode and exposed glass substrate within the cavity, such that the adhesion capability between the &#x3c0; type bus electrode and ITO conductive film can be improved. Thus, the edge warp phenomenon of the &#x3c0; type bus electrode can be diminished.

Method for forming pi-type assistant electrode

A driving electrode structure of a plasma display panel for improving operation margin is described. A plurality openings is formed in a transparent electrode according to the driving characteristics of fluorescent layer of each luminous cell to adjust the effective area of the transparent electrode in each luminous cell, thereby increasing the operation margin of the sustaining voltage.

Driving electrode structure of plasma display panel

A bus electrode of the present invention is formed by first coating a Ru-containing layer on the front plate and the transparent electrodes. Then, an Ag-containing layer is coated over the Ru-containing layer. In accordance with the present invention, the coating area of the Ru-containing layer is larger than the coating area of the Ag-containing layer to improve adhesion between the bus electrodes, glass plate and the transparent electrodes. Then, a photolithography process is performed to define the bus electrodes.

Method for manufacturing bus electrodes of plasma display panel

An front plate structure for a plasma display panel is described. In accordance with the present invention, a protruding space pad structure is formed on the dielectric layer or protective layer of the front plate. The space pad is used to form the height difference on the surface of the front plate, about 3 &#x3bc;m to 15 &#x3bc;m. The height difference forms gas channels between the front plate and the discharge region to improve the performance of the vacuuming and refilling gas steps.

Growing community of inventors

Ping Chen, Taiwan

Ching-Chung Cheng