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公开(公告)号：US10984691B2
公开(公告)日：2021-04-20
申请号：US16008472
申请日：2018-06-14
发明人： Choi Wing Siu , Wing Chun Chan , Ho Ming Chan , Haojuan Dai , Wei Gong
摘要： A method and a display driver apparatus for detecting panel defect on an electronic paper display (EPD) are provided. A sense voltage from the voltage for common (VCOM) electrode of the EPD is obtained and compared with an upper reference voltage and a lower reference voltage. As the sense voltage is proportional to a total capacitance of the plural display electrode capacitors on the EPD, a defective panel with capacitance abnormality or opened circuits can be identified.
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公开(公告)号：US11443680B1
公开(公告)日：2022-09-13
申请号：US17565487
申请日：2021-12-30
IPC分类号： G09G3/20
摘要： The present invention provides a dithering and directional modulation-based frame rate conversion apparatus comprising: a directional delta modulation generator configured to receive a plurality of input color data representing a plurality of input color components of an input pixel color and generate a plurality of modulated data for the plurality of input color data respectively; and a plurality of dithering modules configured to perform K-bit dithering conversion on the plurality of input color data respectively to generate a plurality of output color data for representing a plurality of output color components of an output pixel color with a color depth of K bits per component, where K is an integer equal to or great than 1. The present invention can allow display to support frame rates higher than its standard configuration without observable color depth degradation.
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公开(公告)号：US11243626B2
公开(公告)日：2022-02-08
申请号：US16908805
申请日：2020-06-23
摘要： A display system circuitry capable of saving power consumption includes a display panel and a driver circuitry. In particular, the display panel includes a plurality of source electrodes with a plurality of data lines and a plurality of gate electrodes further includes a gate driver which is directly incorporated into a thin film transistor array to form Gate on Array (GOA) electrode, a source electrode transmitting a plurality of data driving signals, a gate electrode transmitting gate driving signals, a VCOM electrode transmitting voltage driving signals, a display electrode transmitting displaying driving signals. The driver circuitry includes a display driver IC which includes a source driver operably configured to drive the source electrode and gate control to control gate driver output, and a touch driver IC configured to generate the touch scan signal from a touch sensor.
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公开(公告)号：US10950194B1
公开(公告)日：2021-03-16
申请号：US16592841
申请日：2019-10-04
发明人： Wing Chi Stephen Chan , Chi Wai Lee , Pie Chih Ke , Johnkid Lo
摘要： In a display panel, drivers for driving LEDs of pixels are distributed over a substrate, and transceivers relay pixel data from a timing controller to the drivers. The drivers are divided into groups. Respective drivers in a group receive corresponding pixel data addressed thereto solely from one corresponding transceiver. The corresponding transceiver and the respective drivers are daisy-chained to form one first linear daisy chain, where each pair of immediately-adjacent first drivers are connected. Plural first linear daisy chains are formed for all groups. The transceivers are daisy-chained to form a second linear daisy chain by connecting each pair of immediately-adjacent transceivers. The first and second linear daisy chains form a fishbone topology network to enable transmission of pixel data from the timing controller to the drivers while reducing a data-line footprint on the substrate that mounts the pixels, driver and transceivers in comparison to a conventional star-topology network.
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公开(公告)号：US10133405B2
公开(公告)日：2018-11-20
申请号：US15349972
申请日：2016-11-11
发明人： Sing Ng , Wing Chi Stephen Chan , Hon Sheung Liu , Xiacong Liu , Siu Hong Lui
IPC分类号： G06F3/0488 , G06F3/041 , G06F3/044 , H01L27/32 , H04L5/22
摘要： A touch-sensing-enabled display module is provided. In the module, a display panel has an electroluminescent layer, such as an organic light emitting diode (OLED) layer, sandwiched between cathode electrodes and anode electrodes. The anode electrodes transmit touch-sensing signals induced at the display panel. The MSN performs multiplexing and summing on the touch-sensing signals to produce output-channel signals for touch sensing. The multiplexing and the summing are reconfigurable such that the touch-sensing signals are dynamically selected for summing to produce one or more output-channel signals. A touch controller measures the output-channel signals to generate touch data. The module further includes a display driver for driving the cathode and anode electrodes. By using the MSN, the display panel is able to provide adaptive sensor reconfiguration. One particular advantage of adaptive sensor reconfiguration is that the signal-to-noise ratio of a touch signal is improved, increasing accuracy in touch detection.
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公开(公告)号：US20160216795A1
公开(公告)日：2016-07-28
申请号：US14603379
申请日：2015-01-23
发明人： Kam Tim Cheung
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F2203/04103
摘要： A touch sensor panel includes a first set and a second set of sensor elements patterned in a plurality of intersecting rows and columns. The first set of sensor elements are configured to be drive electrodes. The second set of sensor elements are configured to be sense electrodes. Each row includes at least one drive electrode from the first set. Each column includes at least one sense electrode from the second set. A method for manufacturing a touch sensor panel is also provided.
摘要翻译： 触摸传感器面板包括以多个相交的行和列图案化的第一组和第二组传感器元件。 第一组传感器元件被配置为驱动电极。 第二组传感器元件被配置为感测电极。 每行包括至少一个来自第一组的驱动电极。 每列包括来自第二组的至少一个感测电极。 还提供了一种用于制造触摸传感器面板的方法。
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公开(公告)号：US11522545B1
公开(公告)日：2022-12-06
申请号：US17647475
申请日：2022-01-10
发明人： Pak-Kong Dunn , Wen-Chi Wu , Po Yen Lin , Hai Bin You
IPC分类号： H03K19/0185 , H01L29/78 , H03K3/037
摘要： A level shifter circuit for translating input signal to output signal is disclosed. The level shifter includes an input stage and a latch stage. The latch stage comprises at least a transistor characterized in a substantially matched transconductance with the input stage for preventing a discrete realization of a voltage clamp circuit. The transistor is a semiconductor device including a source region having a source doping region and a drain region having a first doping region and a second doping region. The first doping region is doped with a first conductivity impurity. The second doping region is disposed around the first doping region so as to surround the first doping region, and is doped with a second conductivity impurity. The second doping region has a higher on-resistance than the first doping region, thereby a high resistive series path is created by the second doping region to mimic an embedded resistor.
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公开(公告)号：US11357087B2
公开(公告)日：2022-06-07
申请号：US16920376
申请日：2020-07-02
IPC分类号： H05B45/325 , G09G3/20 , G09G3/32
摘要： A passive matrix LED display driving scheme based on subframe pulse width modulation (PWM) to increase frame scan rate and further with channel-to-channel compensation is provided. The scheme may comprise: dividing each frame of the display video into T number of subframes; converting a driving signal for a pixel into a N-bit driving data, compensating the driving data with a compensation value; mapping the compensated driving data into the T number of subframes respectively.
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公开(公告)号：US10553138B2
公开(公告)日：2020-02-04
申请号：US15955776
申请日：2018-04-18
摘要： Disclosed is a system and method of an adaptive driving compensation for enhancing display uniformity. Multiple input data patterns of the display panel are compared with image data by an image analyzing means or a user and thereby generate display control commands if non-uniformity in the display of image is detected by the image analyzing means or the user. A difference between pixel data associated with a current line and a preceding line is compared with a predefined threshold. A look up table (LUT) is scanned to add a compensation value on the pixel data the current line based upon the display control commands if the difference between the pixel data of the current line and the preceding line is greater than the predefined threshold or otherwise retain the original value of the said pixel data. The input data patterns with compensated pixel data or original pixel data is displayed.
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10.发明授权公开(公告)号：US10318085B2
公开(公告)日：2019-06-11
申请号：US15793987
申请日：2017-10-26
发明人： Wing Chi Stephen Chan , Wai Hon Ng , Sing Ng , Hon Sheung Liu , Yip Fai Li , Wai Lan Ng , Johnkid Lo
摘要： A PMOLED touch-sensing display panel using anodes as in-cell touch sensors is provided. The anodes and the cathodes are respectively and correspondingly configured into two or more electrically isolated areas of cathodes and anodes such that the heavy parasitic capacitance due to close proximity of the anode layer and the cathode layer is eliminated, hence providing a full dynamic range in sensing the changes in capacitance due to finger touches.
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