Display driver having source electrode driver receiving image data directly from data storage, and display and terminal using the same

The disclosure provides a display driver, applied to process image data sent by a processor, the driver includes a time sequence controller, a data receiver connected with the time sequence controller electrically, an image processing module, a data storage module, a pulse width modulation register and a source electrode driver; when the display processor sends static image data, the static image data received by the data receiver is processed by the image processing module, the pulse width modulation register stores a backlight adjustment signal generated by the image processing module first processing the static image data, the static image data processed by the image processing module is stored in the data storage module, the time sequence controller controls the source electrode driver to read the static image data stored in the data storage module, simultaneously reading the backlight adjustment signal stored in the pulse width modulation register to adjust backlight.

CROSS REFERENCE

This disclosure claims priority to Chinese patent application No. 201610339364.1, entitled “Display driver, display and terminal” filed on May 20, 2016, which is incorporated by reference in its entirety.

FIELD OF THE DISCLOSURE

The disclosure relates to a liquid crystal display technical field, and more particularly to a display driver, a display and a terminal.

BACKGROUND OF THE DISCLOSURE

Smart phones have undergone a rapid development in recent years, power consumption is growing with accumulative functions coming out. A display consumes the most energy in a mobile phone. An integrated data storage module embedded in the display driver is a conventional manner for saving energy, when an animated image is displayed, image data will be sent from a data sender of a mobile phone application processor to the display driver, a data receiver in the driver stores the received data in the integrated data memory and displays immediately. When a frozen image is displayed, the application processor stops sending image data, a conventional display driver stores the received image data in the integrated data memory. When a frozen image is displayed, the display driver will read the image date directly, after several image processing modules, such as color enhancement, dynamic backlight control, then sent to the screen by a source electrode driver, in the process, each of the frozen images still need to be processed by for example the color enhancement and the dynamic backlight control modules, both of which consume energy.

SUMMARY OF THE DISCLOSURE

The objective of the disclosure is to provide an energy-efficient driver that reduces energy consumption of a display and the display.

The disclosure further provides a terminal.

A display driver provided by the application is applied to process image data sent by a processor, the driver includes a data receiver, an image processing module, a data storage module, a time sequence controller and a source electrode driver; the time sequence controller controls the data receiver, the image processing module, the data storage module to work.

The date receiver receives the image data sent from the processor and sends to the image processing module, the image processing module processes the image data sent from the processor, the display driver further includes a pulse width modulation register; the data storage module stores the image data processed by the image processing module; the pulse width modulation register stores a backlight adjustment signal generated after the image processing module first frame processing static image data; the time sequence controller controls the source electrode driver to receive and send the image data sent by the data storage module; when the processor sends static image data, the static image data received by the data receiver will be processed by the image processing module, the pulse width modulation register stores a backlight adjustment signal generated by the image processing module first frame processing the static image data, the static image data processed by the image processing module is stored in the data storage module, the time sequence controller controls the static image data stored in the data storage module to send to the source electrode driver, simultaneously outputs the backlight adjustment signal stored in the pulse width modulation register.

When the display processor sends dynamic image data, the dynamic image data received by the data receiver is stored in the data storage module after being processed by the image processing module, the pulse width modulation register stores a dynamic backlight adjustment signal generated by the image processing module processing each of the dynamic image data, the time sequence controller reads the dynamic image data stored in the data storage module and sends to the source electrode driver, simultaneously the time sequence controller reads the dynamic backlight adjustment signal stored in the pulse width modulation register to adjust backlight.

The image processing module includes a color enhancement module and a dynamic backlight adjustment module, the color enhancement module enhances colors of the image data sent by the data receiver, the dynamic backlight adjustment module adjusts a backlight gray scale and brightness of the image data processed by the color enhancement module.

The display of the application includes a display panel and a display driver; the display driver and the display panel are connected electrically to drive a circuit of the display panel; the driver includes a data receiver, an image processing module, a data storage module, a time sequence controller and a source electrode driver; the date receiver receives the image data sent from the processor and sends to the image processing module, the image processing module processes the image data sent by the processor, the display driver further includes a pulse width modulation register; the data storage module stores the image data processed by the image processing module; the pulse width modulation register stores a backlight adjustment signal generated after the image processing module first frame processing static image data; the time sequence controller controls the source electrode driver to receive and send the image data sent by the data storage module; when the processor sends static image data, the static image data received by the data receiver is processed by the image processing module, the pulse width modulation register stores a backlight adjustment signal generated by the image processing module first frame processing the static image data, the static image data processed by the image processing module is stored in the data storage module, the time sequence controller controls the static image data stored in the data storage module to send to the source electrode driver, simultaneously outputs the backlight adjustment signal stored in the pulse width modulation register.

When the display processor sends dynamic image data, the dynamic image data received by the data receiver is stored in the data storage module after being processed by the image processing module, the pulse width modulation register stores a dynamic backlight adjustment signal generated by the image processing module processing each of the dynamic image data, the time sequence controller reads the dynamic image data stored in the data storage module and sends to the source electrode driver, simultaneously the time sequence controller reads the dynamic backlight adjustment signal stored in the pulse width modulation register to adjust backlight.

The image processing module includes a color enhancement module and a dynamic backlight adjustment module, the color enhancement module enhances colors of the image data sent by the data receiver, the dynamic backlight adjustment module adjusts a backlight gray scale and brightness of the image data processed by the color enhancement module.

The display is a liquid crystal display.

The display further includes a thin film transistor switch device, the source electrode driver is applied to connect a source electrode of the thin film transistor switch device.

A mobile terminal of the application includes the display in the claims and a mainboard, the mainboard has an application processor, the application processor is connected to the circuit board for sending the image data to the circuit board.

The image processing module is disposed in back of the data storage module according to the display driver described in the disclosure, the image processing module only needs to process the first frame of the image data during processing static image data, then the image data is stored in the data storage module, the pulse width modulation register stores a backlight adjustment signal generated by the image processing module first frame static image data, it is unnecessary to re-utilize the image processing module during reading the image data in the data storage module, which saves energy.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Embodiments of the disclosure are described in detail with reference to the accompanying drawings as follows, obviously, the described embodiments are part of embodiments of the disclosure rather than all of them. Based on the embodiments of the disclosure, all other embodiments obtained by a person skilled in the art without creativity should be considered within the scope of protection of the disclosure.

Referring toFIG. 1, the disclosure provides a display driver10, a display and a terminal20, the display driver is applied to process image data sent by the processor21and send to the display for driving the display. The display includes a display panel connected with the display driver electrically, the display is a liquid crystal display. The terminal can be a mobile phone or a display, a mobile phone is taken as an example in the embodiment. The terminal20includes a mainboard, the mainboard has the processor21, and the processor21is connected to the display driver10for driving the display driver.

In the embodiment, the display driver10includes a data receiver11, an image processing module12, a data storage module13, a time sequence controller14and a source electrode driver15.

The date receiver11receives the image data sent from the processor21and sends to the image processing module12. The image processing module12processes the image data sent from the data receiver11. In the embodiment, the image processing module12includes a color enhancement module121and a dynamic backlight adjustment module122, the color enhancement module121enhances colors of the image data sent by the data receiver, the dynamic backlight adjustment module122adjusts a backlight gray scale and brightness of the image data processed by the color enhancement module. A white balance adjustment module, an image data sharpness enhancement module can likewise be included, which are not shown the FIGURE.

The data storage module13stores the image data processed by the image processor12; the display driver10further includes a pulse width modulation register16. The pulse width modulation register16stores a backlight adjustment signal generated after the image processing module12processing the image data.

The time sequence controller14controls the source electrode driver15to receive and send the image data sent by the data storage module13. In the embodiment, the display further includes a thin film transistor switch device, the source electrode driver is connected to a source electrode of the thin film transistor switch device, so that the driver can drive the display.

Referring toFIG. 1, when the processor21sends static image data, the static image data received by the data receiver11is processed by the image processing module12, the pulse width modulation register16stores a backlight adjustment signal generated by the image processing module12first frame processing the static image data, the static image data processed by the image processing module12is stored in the data storage module13, the time sequence controller14controls the static image data stored in the data storage module13to be sent to the source electrode driver15, simultaneously outputting the backlight adjustment signal stored in the pulse width modulation register16.

As the image processing module12is disposed behind the data storage module13, data stored in the data storage module13has been processed by the image processing module12, the time sequence controller14reads from the data storage module13directly, compared with a conventional manner that the image processing module needs to be recalled each time, the image data read from the data storage module13has been processed in the disclosure, which is unnecessary to be processed by the image processing module12, preventing energy consumption by the image processing module12and reducing consumption of the terminal.

When the processor21sends dynamic image data, the dynamic image data received by the data receiver11is stored in the data storage module13after being processed by the image processing module12, the pulse width modulation register16stores a dynamic backlight adjustment signal generated by the image processing module12processing each of the dynamic image data, the time sequence controller14controls the source electrode driver15to read the dynamic image data stored in the data storage module13, simultaneously reading the dynamic backlight adjustment signal stored in the pulse width modulation register16to adjust backlight.

Above are embodiments of the disclosure, which do not limit the scope of the disclosure, any modifications, equivalent replacements or improvements within the spirit and principles of the embodiments described above should be covered by the protected scope of the disclosure.