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Display panel driving circuit, control method of display panel driving circuit and display device

A technology for display panels and driving circuits, which is applied in static indicators, instruments, etc., can solve the problems of high power consumption of display panels and failure to meet energy-saving requirements.

Inactive Publication Date: 2014-07-09
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the power consumption of the display panel in the prior art is large, which does not meet the energy saving requirements

Method used

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  • Display panel driving circuit, control method of display panel driving circuit and display device
  • Display panel driving circuit, control method of display panel driving circuit and display device
  • Display panel driving circuit, control method of display panel driving circuit and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 of the present invention provides a display panel driving circuit, including: a switching controller and at least two sets of driving voltage storage areas, and the switching controller controls the driving voltages stored in different sets of driving voltage storage areas according to control instructions. switch between voltages.

[0034] In this embodiment, two sets of driving voltage storage areas are taken as an example for illustration, that is, two driving voltage storage areas and switching controllers are included.

[0035] Further, the control instruction is generated by an external circuit connected with the display panel driving circuit. Specifically, it may be a control signal triggered by USB3.0 access, and finally sent to the switching controller.

[0036] Further, the relationship between the driving voltage storage area and the switching controller is not specifically limited in this embodiment, it may be: the switching controller is integ...

Embodiment 2

[0045] Embodiment 2 of the present invention also provides a display panel driving circuit, including: a switching controller and at least two sets of driving voltage storage areas, and the switching controller controls the driving voltages stored in different sets of driving voltage storage areas according to control instructions. switch between drive voltages.

[0046] The difference from Embodiment 1 is that in Embodiment 1, except that the source drive voltage is reduced to the normal operating voltage, other voltages (ie, logic voltage, gamma voltage and common voltage) are the same as the normal operating voltage; while Embodiment 2 Not only the source driving voltage is lower than the normal working voltage, but other voltages (ie, logic voltage, gamma voltage and common voltage) are slightly lower than the normal working voltage, so all voltages are lower than the normal working voltage, further reducing power consumption.

Embodiment 3

[0048] Embodiment 3 of the present invention provides a control method for a display panel driving circuit, including: a switching controller acquires a control instruction, and controls the driving voltage according to the control instruction to switch between driving voltages stored in different groups of driving voltage storage areas .

[0049] The control instructions are generated by an external circuit connected with the display panel driving circuit.

[0050] Further, the data stored in each group of driving voltage storage areas includes source driving voltage Vs, logic voltage DVDD, gamma voltage Gma and common voltage Vcom, and at least one group of driving voltage storage areas in different groups of driving voltage storage areas stores The source drive voltage Vs is lower than the normal operating voltage.

[0051] Specifically, after switching, the source driving voltage Vs is reduced from the normal working voltage of 12V to 10V, so as to reduce the power consum...

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PUM

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Abstract

The invention discloses a display panel driving circuit, a control method of the display panel driving circuit and a display device. The display panel driving circuit comprises a switch controller and at least two driving voltage storage areas, wherein the switch controller controls the switching between the driving voltages stored in different driving voltage storage areas according to control instructions. By the adoption of the display panel driving circuit, a control instruction can be generated when a USB line is connected in specific environments such as USB3.0, and then a current driving voltage storage area for controlling driving is switched to another driving voltage storage area; the source driving voltage stored in the area is reduced after switching, driving power consumption for display of the display panel is reduced, and then the power consumption of the whole display panel is reduced so that energy can be saved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display panel drive circuit, a control method thereof, and a display device. Background technique [0002] The basic principle of LCD (Liquid Crystal Display) display function is to control the amount of light passing through different display units (or pixel units) on the entire display panel, so as to achieve the purpose of display. The driving control of the LCD is realized through the combined action of the TFT on and off and the source driving voltage. Each display unit corresponds to the pixel electrode. Pass through, that is, normally black mode; or on the contrary, light passes through when power is off, and light does not pass when power is on, that is, normally white mode. [0003] The liquid crystal units on the display panel are distributed in a matrix. Each column of display units corresponds to a column of drive circuits (ie, source drive), and each row of displ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 王洁琼
Owner BOE TECH GRP CO LTD
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