摘要:
A tunable antenna is disclosed. The tunable antenna includes a ground element for providing grounding, a signal feed-in terminal, a radiation unit electrically connected to the signal feed-in terminal and including a long side extended from the signal feed-in terminal along a first direction, a short side extended from the signal feed-in terminal along a second direction, and a branch electrically connected between the signal feed-in terminal and the ground element, a coupling unit for coupling to the long side, and a switch unit for connecting or disconnecting the coupling unit to/from the ground element to change a coupling relationship between the coupling unit and the long side, such that the tunable antenna respectively operates in a first frequency band and a second frequency band.
摘要:
A radio-frequency (RF) device and a wireless communication device include a capacitive sensing unit capable of using a radiating element of an antenna to sensing an environment capacitance within a specified range, such that an RF signal processing device is capable of adjusting power of an RF signal accordingly, to prevent affecting a user. When the radiating element of the antenna includes a direct-current signal route to a ground terminal, the RF device and the wireless communication device further includes at least a capacitor for cutting off the direct-current signal route.
摘要:
The present invention discloses an RF device for a wireless communication device, including a grounding element, an antenna, including a radiating element, a feed-in element, a coupling element, a switch, coupled between the coupling element and the grounding element, for connecting or disconnecting the grounding element to the coupling element, such that the antenna respectively operates in a first frequency band and a second frequency band, and a grounding terminal, for coupling the grounding element, a capacitive sensing element, for sensing an environment capacitance within a specific range through the radiating element, at least one capacitor, for blocking a DC route from the grounding terminal to the grounding element.
摘要:
A switching signal generator of an active matrix display is disclosed. The switching signal generator includes at least one delay device connected to the switches of the active matrix display. The delay device consists of many delay units connected in series for receiving a source switching signal and correspondingly generating a plurality of target switching signals controlling the switches. There is a constant phase shift between any two successive target switching signals so that the switches are switched on one by one at regular intervals.
摘要:
A transflective liquid crystal display (LCD) includes at least a transmission pixel region and at least a reflection pixel region positioned in a pixel region. The transmission region includes at least a transmissive electrode connected to a first switching element. The reflection pixel region includes at least a reflective electrode connected to a second switching element. The transmissive and the reflective electrodes are controlled respectively by independent switching elements.
摘要:
A testing apparatus for testing a display and an operation method of the testing apparatus are disclosed. The apparatus is electrically coupled to a driving line of a display, an image signal source and a shorting bar signal source comprises a first bonding pad, n probing terminals and n switch devices. In the present invention, the n probing terminals are electrically coupled to the first bonding pad, where the n is an integer not less than 1. The gate terminal of each switch device is electrically coupled to the shoring bar signal source, the first terminal is electrically coupled to the image signal source and the second terminal is electrically coupled to one of the n probing terminals. In the present invention, the voltage provided by the shorting bar signal source controls serving as a shorting bar test or a full contact test for testing the display.
摘要:
The present invention discloses an RF device for a wireless communication device, including a grounding element, an antenna, including a radiating element, a feed-in element, a coupling element, a switch, coupled between the coupling element and the grounding element, for connecting or disconnecting the grounding element to the coupling element, such that the antenna respectively operates in a first frequency band and a second frequency band, and a grounding terminal, for coupling the grounding element, a capacitive sensing element, for sensing an environment capacitance within a specific range through the radiating element, at least one capacitor, for blocking a DC route from the grounding terminal to the grounding element.
摘要:
A system for displaying images is disclosed. A display device comprises a first substrate comprising a plurality of pixels, each comprising RGB transparent sub-pixel regions. A second substrate comprises RGB regions opposite the first substrate, wherein the transparent sub-pixel regions respectively correspond to the three major color regions. A light blocking layer is disposed in one of the transparent sub-pixel regions of the first substrate. A photo spacer corresponding to the light blocking layer is formed, supporting the opposite first and second substrates.
摘要:
A shift register and a shift register are provided. The shift register comprises the switch circuit, the latch circuit, and the inverter circuit 170. The shift register set, by alternately-serially connecting two types of shift registers, can receive two clock signals and an initial pulse signal to control the output waveform. The output of the present stage shift register can be used to control the turn-on time of the nest stage shift register. Further, by changing the circuit driving signal from the dynamic signal to the static signal, the circuit can operate only when the signal is “0” or “1” without being affected by the signal rising time and the falling time so that the circuit can operate in a more stable status.
摘要:
The LCD device includes a pixel circuit and a driving circuit. The pixel circuit comprises thin film transistors serving for driving pixels of the LCD The driving circuit is coupled to the pixel circuit, generating a driving signal for driving the transistors. The gate terminal driving signal of the pixel transistors has a high state and a low state, and the threshold voltage of the transistor is set at a level at zero volt, or depending on whether the transistor is n-type or p-type, between zero volt and the low or high states of the gate terminal driving signal, respectively.