摘要:
A display apparatus comprises a pixel array, a front-end circuit, a test circuit, and an enable circuit. The test circuit tests the pixel array. The enable circuit determines whether to enable the test circuit in response to a predetermined voltage. After the pixel array is tested, the predetermined voltage is provided by the front-end circuit to disable the test circuit.
摘要:
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.
摘要:
A display apparatus comprises a pixel array, a front-end circuit, a test circuit, and an enable circuit. The test circuit tests the pixel array. The enable circuit determines whether to enable the test circuit in response to a predetermined voltage. After the pixel array is tested, the predetermined voltage is provided by the front-end circuit to disable the test circuit.
摘要:
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.
摘要:
A method of fabricating a pixel structure for use in an electroluminescent panel includes the following steps. A substrate is provided. Three shadow masks having a plurality of first, second, and third openings patterned in an array of T shaped are respectively provided, and three evaporation processes using the three shadow masks are subsequently performed to form a plurality of first subpixel units, second subpixel units and third subpixel units respectively. One first subpixel of the first subpixel unit, one second subpixel of the second subpixel unit adjacent to the first subpixel unit, and one third subpixel of the third subpixel unit adjacent to the first subpixel unit form a display pixel unit.
摘要:
A driving circuit of display. Two more thin film transistors is added to the original driving circuit of display so that the driving circuit now includes four thin film transistors such that the gate terminal of the thin film transistor's voltage level increases as the threshold voltage of the driving thin film transistor increases. The driving current of the thin film transistor is able to maintain a constant value so that the initial luminance of the display remains unchanged. Therefore, the present invention can effectively increase the average working life of the display.
摘要:
A pixel circuit for driving a plurality of pixel units within a display includes: a plurality of scanning lines formed within the display for transmitting scanning signals to the pixel units; a plurality of data lines formed within the display and transversely crossing the scanning lines for transmitting data signals to the pixel units, respectively; and a plurality of LDD-TFTs. The LDD-TFT is coupled to a respective scanning line, a respective data line and a driving transistor. The LDD-TFT includes a first lightly doped drain that is closest to the driving transistor and that has a first length, and a second lightly doped drain that has a second length shorter than the first length.
摘要:
The present invention provides a method to reduce the power consumption. The method comprises these steps. First, the RGB gray levels of a pixel are decided. Then, the RGB gray level values are transformed to XYZ tristimulus values. The XYZ tristimulus values are transformed to L*a*b* values. Next, the L*′a*′b*′ values are determined based on an acceptable color difference range. The color difference between the L*′a*′b*′ and the L*a*b* is in the color difference range. Finally, the L*′a*′b*′ values are transformed to X′Y′Z′ values and the X′Y′Z′ values are transformed to R′G′B′ gray level values.
摘要翻译:本发明提供一种降低功耗的方法。 该方法包括这些步骤。 首先,决定像素的RGB灰度级。 然后,将RGB灰度值转换为XYZ三刺激值。 XYZ三刺激值被转换为L * a * b *值。 接下来,基于可接受的色差范围来确定L *'a *'b *'值。 L *'a *'b *'和L * a * b *之间的色差处于色差范围。 最后,将L *'a *'b *'值转换为X'Y'Z'值,将X'Y'Z'值转换为R'G'B'灰度值。
摘要:
A light emitting diode (OLED) display and pixel driving method thereof are disclosed. Each storage capacitor is discharged via the driving TFT and OLED until conductive current of each OLED is almost zero so as to record a sum of a voltage drop across each OLED under a specific condition and the threshold voltage of the driving TFT. By using the sum of the voltage drop across each OLED and the threshold voltage of the corresponding TFT in the subsequent OLED driving process, the luminance reduction issue caused by TFT threshold-voltage shift and OLED material decay can be solved.
摘要:
An apparatus and method for providing switched power to an AMOLED is disclosed. During certain time intervals, voltage and/or polarity provided to active devices such as thin film transistors (TFT) driving the AMOLEDs may be changed to reverse polarity or differ in absolute magnitude of voltage. During a subsequent time interval, the changed power may be changed again and/or reverted to an original state. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.