IRIS OPTRONICS CO., LTD.

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.

A liquid crystal display device is proposed, and includes a display panel, a timing control module, and a plurality of driving modules. The display panel includes a plurality of display blocks. The timing control module is configured to simultaneously generate a plurality of timing control signals. The driving modules are connected between the timing control module and the display panel, and receive the timing control signals, respectively. At least one of the driving modules outputs a plurality of scan signal groups to the display blocks according to at least one of the timing control signals. The driving modules respectively output a plurality of data signal groups to the display blocks according to the timing control signals, causing the display blocks to be driven by the scan signal groups and the data signal groups to display an image.

A display driving system includes a display module, a data source module, a driving parameter storing module and a time sequence controlling module. The display module includes a plurality of pixel unit sets, and the pixel unit sets are divided into a plurality of sub-pixel units. The data source module includes a plurality of data signals, and the data signals correspond to the pixel unit sets. The driving parameter storing module is configured to store a scanning sequence list and a compensating information, the scanning sequence list includes a plurality of sequence information, the sequence information are corresponding to the sub-pixel units, and the compensating information includes a plurality of compensating modes. The time sequence controlling module performs compensation on the data signals to generate a compensating data signal, and drives the display module to display a display screen.

A method for driving a cholesteric liquid-crystal display device is provided. The cholesteric liquid-crystal display device includes a cholesteric liquid-crystal display panel and a driving circuit section. The cholesteric liquid-crystal display panel includes a plurality of scanning electrodes and a plurality of data electrodes. The method includes the following steps: utilizing the driving circuit section to sequentially activate each of the scanning electrodes using a pulse-width modulation (PWM) scanning procedure, which comprises a selection stage and a non-selection stage; and during the selection stage of each pixel circuit on an activated scanning electrode among the plurality of scanning electrodes, utilizing the driving circuit section to add one or more first additional voltage pulses and one or more second additional voltage pulses to a negative half cycle and a positive half cycle of a common AC voltage pulse applied to each pixel circuit on the activated scanning electrode, respectively.

A scan driving method for rendering a high-contrast image, for use in a cholesteric liquid-crystal display device, is provided. The cholesteric liquid-crystal display device includes a display panel and a driving circuit section. The method includes: utilizing the driving circuit section to sequentially activate each scanning electrode using a modified pulse-width modulation (PWM) scanning procedure including a first stage, a second stage, and a third stage in sequence; and utilizing the driving circuit section to apply one or more alternating-current (AC) voltage pulses to pixel circuits on a first scanning electrode during the first stage to manipulate grayscale values of the pixel circuits thereon to be written in the second stage. During the first stage of the first scanning electrode, the pixel circuits on the remaining scanning electrodes within the third stage sense a zero voltage during a high-voltage period within the first stage of the first scanning electrode.

A driving method of cholesteric liquid crystal display is provided. A liquid crystal driving unit is used to output row driving voltage to multiple row circuit structures. Sequentially column driving voltage is outputted to multiple column circuit structures in a scanning manner. Scanning a column circuit structure takes one scanning time sequence. When starting the Nth time sequence of pixels to present the image, a ghost elimination voltage is applied to eliminate the image of the Mth time sequence and present it at the image position of the Nth time sequence, where M=N+1 and the ghost elimination voltage is applied at T. By doing so, the phenomenon of ghosts appearing on cholesteric liquid crystal displays can be improved, and the imaging quality of cholesteric liquid crystal displays can be improved.

A cholesteric liquid crystal display device includes a liquid crystal module and a touch module. The liquid crystal module includes a flat layer. The touch module is disposed on a surface of the flat layer of the liquid crystal module. The touch module includes a first electrode layer, a filter-side substrate layer, a second electrode layer, a first optical transparent adhesive layer and a cover substrate. The first electrode layer is connected to the flat layer of the liquid crystal module. The filter-side substrate is connected to the first electrode layer. The second electrode layer is connected to the filter-side substrate. The first optical transparent adhesive layer is connected to the second electrode layer. The cover substrate is connected to the first optical transparent adhesive layer. Therefore, the reflectivity and contrast of the cholesteric liquid crystal display device can be enhanced.

The present disclosure provides a double-layer cholesteric liquid crystal display device and a fabrication method thereof. The double-layer cholesteric liquid crystal display device includes a first liquid crystal layer, a second liquid crystal layer, a substrate, a first circuit pattern layer, a second circuit pattern layer and a second circuit pattern layer. The second liquid crystal layer is formed above the first liquid crystal layer. One of the first liquid crystal layer and the second liquid crystal layer comprises a left-handed cholesteric liquid crystal, and the other one of the first liquid crystal layer and the second liquid crystal layer comprises a right-handed cholesteric liquid crystal. The substrate is formed between the first liquid crystal layer and the second liquid crystal layer. The first circuit pattern layer is formed on a lower surface of the substrate for driving the first liquid crystal layer.

A display device is provided, which includes a display panel. The display panel includes a first substrate, a second substrate, a cholesteric liquid-crystal (ChLC) layer, and a driving circuit section. A plurality of first electrodes formed on the first substrate extend in a first direction. A plurality of second electrodes formed on the second substrate extend in a second direction different from the first direction. The ChLC layer is formed between the first substrate and the second substrate. The driving circuit section is configured to apply a plurality of alternating-current (AC) voltage pulses to pixel circuits at intersections between the first electrodes and the second electrodes. The driving circuit section is further configured to perform a full screen reset procedure to the display panel followed by a pulse-width modulation (PWM) scanning procedure to control cholesteric molecules within the pixel circuits to enter a focal conic state.

The present invention is a cholesterol liquid crystal display and driving method thereof. The cholesterol liquid crystal display includes a display panel and a liquid crystal driving unit. The display panel is used to display images composed of a row of imaging drive pixels and multiple rows of non-imaging drive pixels. The liquid crystal driving unit simultaneously drives the display panel to show images by applying a first driving voltage to multiple non-imaging drive pixels and a second driving voltage to imaging drive pixels. The first driving voltage has a quantity of the first pulse waves within a unit time, and the second driving voltage has a quantity of the second pulse waves within the unit time. The quantity of the first pulse waves is at least 5 times greater than the quantity of the second pulse waves, and the higher the multiple, the better the display effect.