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公开(公告)号：US20240126127A1
公开(公告)日：2024-04-18
申请号：US18487040
申请日：2023-10-13
发明人： CHI-CHANG LIAO , WU-CHANG YANG
IPC分类号： G02F1/1368 , G02F1/1343 , G02F1/1362 , G02F1/137
CPC分类号： G02F1/1368 , G02F1/134309 , G02F1/136209 , G02F1/136222 , G02F1/137
摘要： A cholesteric liquid crystal display device includes a first substrate, a second substrate, a third substrate, a first cholesteric liquid crystal layer, a second cholesteric liquid crystal layer, a first common electrode pattern layer, a second common electrode pattern layer, and a first TFT circuit pattern layer and the second TFT circuit pattern layer. The first cholesteric liquid crystal layer is disposed between the first substrate and the second substrate. The second cholesteric liquid crystal layer is disposed between the second substrate and the third substrate. The first common electrode pattern layer is disposed on the first substrate. The second common electrode pattern layer is disposed on the third substrate. The first TFT circuit pattern layer and the second TFT circuit pattern layer are respectively disposed on two opposite surfaces of the second substrate. The first TFT circuit pattern layer and the second TFT circuit pattern layer are arranged correspondingly. As a result, alignment can be accomplished without the use of high-precision equipment.
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公开(公告)号：US20230185136A1
公开(公告)日：2023-06-15
申请号：US18078079
申请日：2022-12-08
发明人： MING-LIANG TSAI , WU-CHANG YANG , CHI-CHANG LIAO
IPC分类号： G02F1/1343 , G02F1/133 , G02F1/137
CPC分类号： G02F1/134309 , G02F1/13306 , G02F1/137
摘要： A cholesteric liquid crystal display device and a driving method for improving non-uniform image quality of the cholesteric liquid crystal display device. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel is composed of multiple row circuit structures and multiple column circuit structures. The liquid crystal driving unit sequentially outputs column driving voltages to a plurality of column circuit structures in a scanning manner. After scanning the multiple column circuit structures, the liquid crystal driving unit applies an unselected voltage to the multiple column circuit structures together with more than 18 times the scanning unit time course, so as to make the brightness of the overall picture more uniform.
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公开(公告)号：US20230386426A1
公开(公告)日：2023-11-30
申请号：US18195934
申请日：2023-05-10
发明人： MING-LIANG TSAI , WU-CHANG YANG , CHI-CHANG LIAO
IPC分类号： G09G3/36
CPC分类号： G09G3/3677
摘要： The present invention relates to a driving method of a cholesteric liquid crystal display. It includes the steps in the following: driving each scan line by a dynamic driving scheme (DDS) including an Evolution phase; refreshing a frame of the cholesteric liquid crystal display by a full refresh mode, each scan line driven N times during the Evolution phase in the full refresh mode; and refreshing a part of the frame by a partial-refresh mode, each scan line driven M times in the Evolution phase in the partial-refresh mode, wherein M is greater than N.
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4.发明公开公开(公告)号：US20230185121A1
公开(公告)日：2023-06-15
申请号：US18078090
申请日：2022-12-08
发明人： CHI-WEI LIN , WU-CHANG YANG , CHI-CHANG LIAO
CPC分类号： G02F1/13306 , G02F1/137 , G02F2201/50
摘要： A cholesteric liquid crystal display device and a control method for reducing inrush current when clearing the screen. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel has a plurality of pixel matrix. After the liquid crystal drive unit receives a data latch enable signal, it applies a reset voltage to the plurality of pixel matrix to clear the screen displayed on the cholesteric liquid crystal display panel. The input time of the data latch enable signal received by the liquid crystal driving unit is different, and the corresponding signal time portion is shifted with each other.
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5.发明公开公开(公告)号：US20240241416A1
公开(公告)日：2024-07-18
申请号：US18399683
申请日：2023-12-28
发明人： CHUNG-YI CHANG , WU-CHANG YANG , CHI-CHANG LIAO
IPC分类号： G02F1/137 , G02F1/133 , G02F1/1333 , H02J7/35
CPC分类号： G02F1/13718 , G02F1/13324 , G02F1/133382 , H02J7/35 , H02J2300/26
摘要： A self-powered cholesteric liquid crystal display (ChLCD) device and a method for tracking maximum power are disclosed. The ChLCD device includes a solar cell module, electrical energy for charging, an energy storage device, a charging unit, and a ChLCD module. The method of tracking the maximum power is: supply electrical energy for charging to the charging unit, sense the ambient temperature, and capture the sensed ambient temperature, correspond its value to the voltage value in the comparison data, and adjust the reference driving voltage with a resistor divider, and then electrically charging to the charging unit by the reference driving voltage, so that the charging unit can capture the maximum power of the electrical energy from the solar cell module, and then store the electrical energy in the energy storage device, to refresh the display screen of the ChLCD module and the ChLCD device can effectively utilize electricity.
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公开(公告)号：US20230229034A1
公开(公告)日：2023-07-20
申请号：US18098673
申请日：2023-01-18
发明人： WU-CHANG YANG , HUNG TIEN CHEN , CHI-CHANG LIAO
IPC分类号： G02F1/133 , G02F1/1335
CPC分类号： G02F1/13324 , G02F1/133512 , G02F2201/48
摘要： A cholesteric liquid crystal display device includes a first substrate, a solar cell, a shielding layer, a first electrode layer, a cholesteric liquid crystal layer, a second electrode layer and a second substrate stacked sequentially from bottom to top. The solar cell includes a metal wiring pattern layer. The shielding layer corresponds to the upper side of the metal wiring pattern layer, and is used to reduce the reflection of light from the metal circuit pattern layer. In this way, the cholesteric liquid crystal display device replaces the traditional black absorbing layer with the black material of the solar cell, which can not only absorb light, but also display the image with self-sustaining power. The cholesteric liquid crystal display device shields the arrangement of the metal wiring pattern layer through the shielding layer, which can ensure the image quality of the display panel.
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7.发明公开公开(公告)号：US20230368747A1
公开(公告)日：2023-11-16
申请号：US18197725
申请日：2023-05-16
发明人： SHENG-YAO WANG , WU-CHANG YANG , CHENG-HUNG YAO , CHI-CHANG LIAO
CPC分类号： G09G3/3629 , G09G3/3607 , G09G3/2077 , G09G2310/08 , G09G2320/0242
摘要： The present invention relates to a cholesteric liquid crystal display, a micro processing unit, and a method for hybrid driving. The cholesteric liquid crystal display comprises a display panel and a micro processing unit. First, a grayscale threshold value needs to be set in advance. The micro processing unit will change the grayscale value of the display unit exceeding the grayscale threshold value to the new grayscale value displayed by the bright state color, and display the image by the DDS driving mode. Then the micro processing unit drives the display image in the PWM drive mode, which can greatly improve the color level and contrast display effect of the image.
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公开(公告)号：US20230229049A1
公开(公告)日：2023-07-20
申请号：US18098684
申请日：2023-01-18
发明人： WU-CHANG YANG , HUNG TIEN CHEN , CHI-CHANG LIAO
IPC分类号： G02F1/137 , G02F1/1362
CPC分类号： G02F1/13718 , G02F1/136286 , G02F1/136209
摘要： A cholesteric liquid crystal display device includes a solar cell, a first substrate, a shielding layer, a first electrode layer, a cholesteric liquid crystal layer, a second electrode layer and a second substrate stacked sequentially from bottom to top. The solar cell includes a metal wiring pattern layer. The shielding layer corresponds to the upper side of the metal wiring pattern layer, and is used to reduce the reflection of light from the metal circuit pattern layer. In this way, the cholesteric liquid crystal display device replaces the traditional black absorbing layer with the black material of the solar cell, which can not only absorb light, but also display the image with self-sustaining power. The cholesteric liquid crystal display device shields the arrangement of the metal wiring pattern layer through the shielding layer, which can ensure the image quality of the display panel.
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公开(公告)号：US20230152615A1
公开(公告)日：2023-05-18
申请号：US17986882
申请日：2022-11-14
发明人： WU-CHANG YANG , CHI-CHANG LIAO
IPC分类号： G02F1/133 , G02F1/1333 , G09G3/36
CPC分类号： G02F1/13306 , G02F1/13338 , G09G3/3611 , G09G2330/027 , G09G2354/00
摘要： A cholesterol liquid crystal display device includes a liquid crystal display panel and a liquid crystal driving unit. The liquid crystal display panel has a plurality of pixels. The liquid crystal driving unit applies row driving voltages and column driving voltages to a designated pixel according to the input signal. After the input signal is transmitted, the liquid crystal driving unit activates the power-down signal within a certain period of time to reduce the row driving voltage and the column driving voltage applied to the specified pixel. Thereby, the crosstalk phenomenon on the cholesteric liquid crystal display device can be improved.
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