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US 11,887,556 B2Granted
Data driving circuit, display module, and display device
AssigneeHkc Corporation Limited
InventorsMancheng Zhou, Shuang Wang, Rongrong Li
Life of this patent
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Abstract
A data driving circuit, a display module, and a display device are provided. The data driving circuit at least includes a selecting unit and a signal conversion unit. The selecting unit is configured to directly output an image signal received to the signal conversion unit, or invert the image signal and then transmit the image signal inverted to the signal conversion unit. The control signal represents a display mode of a pixel unit that receives the image signal and perform image display according to the image signal. The signal conversion unit is configured to convert the image signal into a grayscale voltage in an analog form. The grayscale voltage is transmitted to the pixel unit to perform image display.
Claims16
A data driving circuit, at least comprising:
- a selecting unit comprising a selector, a first receiver, and a second receiver;
- and
- a signal conversion unit,
- wherein the selecting unit is configured to receive an image signal in a digital form, and is configured to, based on a control signal, transmit the image signal to either the first receiver or the second receiver,
- wherein the first receiver and the second receiver are connected with the selector in parallel,
- wherein a first resistor is disposed between a non-inverting input end of the first receiver and an inverting input end of the first receiver,
- wherein a second resistor is disposed between a non-inverting input end of the second receiver and an inverting input end of the second receiver,
- wherein an image signal sequence outputted by the first receiver and an image signal sequence outputted by the second receiver are mutually inverted,
- wherein the second receiver inverts the image signal and then transmits the image signal inverted to the signal conversion unit, and
- wherein the control signal represents a display mode of a pixel unit for image display, the signal conversion unit is configured to convert the image signal into a grayscale voltage in an analog form, and the grayscale voltage is used to drive the pixel unit to perform image display.
7 more elements
A display module, comprising:
- a data driving circuit, comprising:
- a selecting unit comprising a selector, a first receiver, and a second receiver;
- and
- a signal conversion unit,
- a scan driving circuit;
- a Liquid-Crystal-Display (LCD) panel;
- and
- a display control circuit,
- wherein the selecting unit is configured to receive an image signal in a digital form, and is configured to, based on a control signal, transmit the image signal to either the first receiver or the second receiver,
- wherein the first receiver and the second receiver are connected with the selector in parallel,
- wherein a first resistor is disposed between a non-inverting input end of the first receiver and an inverting input end of the first receiver,
- wherein a second resistor is disposed between a non-inverting input end of the second receiver and an inverting input end of the second receiver,
- wherein an image signal sequence outputted by the first receiver and an image signal sequence outputted by the second receiver are mutually inverted,
- wherein the second receiver inverts the image signal and then transmits the image signal inverted to the signal conversion unit,
- wherein the control signal represents a display mode of a pixel unit for image display, the signal conversion unit is configured to convert the image signal into a grayscale voltage in an analog form, and the grayscale voltage is used to drive the pixel unit to perform image display,
- and wherein the display control circuit is configured to receive an original data signal from an external signal source, and output a source output control signal and a gate output control signal individually, and the LCD panel is controlled to perform image display by the data driving circuit according to the source output control signal and the scan driving circuit according to the gate output control signal.
13 more elements
A display device, comprising:
- a display module, comprising:
- a data driving circuit, comprising:
- a selecting unit comprising a selector, a first receiver, and a second receiver;
- and
- a signal conversion unit,
- a scan driving circuit;
- a Liquid-Crystal-Display (LCD) panel;
- and
- a display control circuit,
- wherein the selecting unit is configured to receive an image signal in a digital form, and is configured to, based on a control signal, transmit the image signal to either the first receiver or the second receiver,
- wherein the first receiver and the second receiver are connected with the selector in parallel,
- wherein a first resistor is disposed between a non-inverting input end of the first receiver and an inverting input end of the first receiver,
- wherein a second resistor is disposed between a non-inverting input end of the second receiver and an inverting input end of the second receiver,
- wherein an image signal sequence outputted by the first receiver and an image signal sequence outputted by the second receiver are mutually inverted,
- wherein the second receiver inverts the image signal and then transmits the image signal inverted to the signal conversion unit,
- wherein the control signal represents a display mode of a pixel unit for image display, the signal conversion unit is configured to convert the image signal into a grayscale voltage in an analog form, and the grayscale voltage is used to drive the pixel unit to perform image display;
- and wherein the display control circuit is configured to receive an original data signal from an external signal source, and output a source output control signal and a gate output control signal individually, and the LCD panel is controlled to perform image display by the data driving circuit according to the source output control signal and the scan driving circuit according to the gate output control signal;
- a supporting frame;
- and a power supply module, wherein the power supply module is configured to provide a power supply voltage for the display module for image display, and the display module and the power supply module are fixed to the supporting frame.
16 more elements
Dependencies are inferred from the claim text.