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Display panel and power supply method and device thereof

A technology for display panels and power supply methods, applied to static indicators, instruments, etc., can solve the problem of high power consumption and achieve the effect of reducing power consumption

Pending Publication Date: 2022-04-12
芯颖科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the display panel uses an IC chip to supply power to the power supply line and the sub-pixels connected to the power supply line, different power supply lines need to display different brightness. Whether there is a difference in brightness, the IC chip will output according to the same bias current. In order to make the one with high brightness meet the requirements, the bias current with the highest brightness is generally used for output. Therefore, when using the above method to supply power to the display panel High power consumption exists

Method used

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  • Display panel and power supply method and device thereof
  • Display panel and power supply method and device thereof
  • Display panel and power supply method and device thereof

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Embodiment 1

[0029] Such as figure 1 As shown, it is a schematic structural diagram of a display panel provided by an embodiment of the present invention. The display panel includes: an IC chip 11 and a plurality of power supply lines 12; the IC chip 11 is connected to the plurality of power supply lines 12; the plurality of power supply lines Each power supply line in 12 includes a comparator; the comparator is used to compare the driving voltage variation of each power supply line in the plurality of power supply lines with the upper power supply line of each power supply line; the IC chip 11 is preset with There are multiple gray-scale intervals, and the brightness values ​​corresponding to different gray-scale intervals are different; the IC chip 11 is used to sequentially output bias currents to multiple power supply lines to supply power to the power supply lines; the IC chip 11 is also used to obtain The variation of the driving voltage transmitted by the plurality of comparators; a...

Embodiment 2

[0034] exist figure 1 On the basis of the method shown, the present invention also provides a display panel power supply method, which is applied to the display panel in Embodiment 1.

[0035] Such as figure 2 as shown, figure 2 It is a schematic flowchart of a method for supplying power to a display panel provided by an embodiment of the present invention.

[0036] Step S201: Obtain the variation of the driving voltage output by a plurality of the comparators.

[0037] In actual operation, wherein, obtaining the variation of the driving voltage output by a plurality of the comparators includes the following steps A1-A2:

[0038] Step A1: Obtain the luminance of sub-pixel points of multiple power supply lines, and the luminance of sub-pixel points of the upper-level power supply line of the multiple power supply lines.

[0039] Step A2: According to the luminance of the sub-pixel points of the multiple power supply lines and the luminance of the sub-pixel points of the u...

Embodiment 3

[0054] The embodiment of the present invention also provides a display panel power supply device, such as Figure 5 As shown, it is a schematic structural diagram of a display panel power supply device provided by an embodiment of the present invention, including:

[0055] The driving voltage variation acquiring module 51 is configured to acquire the driving voltage variation output by multiple comparators.

[0056] The gray-scale interval determination module 52 is configured to determine the change amount of the gray-scale interval of the current line to be powered compared with the upper level line to be powered corresponding to the current line to be powered according to the change amount of the driving voltage.

[0057] The bias current determination module 53 is configured to determine the target bias current of the current line to be powered according to the change amount of the gray scale interval.

[0058] The control output module 54 is used for controlling the outp...

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PUM

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Abstract

The invention provides a display panel and a power supply method and device thereof. The display panel comprises an IC chip and a plurality of power supply lines. The IC chip is connected with the plurality of power supply lines; each power supply line in the plurality of power supply lines comprises a comparator; the comparator is used for comparing the driving voltage variation of each power supply line in the plurality of power supply lines with the driving voltage variation of a superior power supply line of each power supply line; the IC chip is used for acquiring the driving voltage variation transmitted by the plurality of comparators; according to the driving voltage variable quantity, determining the variable quantity of a gray scale interval corresponding to the current to-be-powered line; determining a target bias current of the current to-be-powered line according to the variable quantity of the gray scale interval; and controlling to output a driving current corresponding to the target bias current to the current to-be-powered line. According to the display panel, the target bias current in the current power supply circuit is judged through the comparator in the power supply circuit, so that the power consumption when the display panel is powered is reduced.

Description

technical field [0001] The present invention relates to the technical field of display panels, in particular to a display panel and a power supply method and device thereof. Background technique [0002] When the display panel uses an IC chip to supply power to the power supply line and the sub-pixels connected to the power supply line, different power supply lines need to display different brightness. Whether there is a difference in brightness, the IC chip will output according to the same bias current. In order to make the one with high brightness meet the requirements, the bias current with the highest brightness is generally used for output. Therefore, when using the above method to supply power to the display panel High power consumption exists. Contents of the invention [0003] In view of this, the object of the present invention is to provide a display panel and its power supply method and device, so as to reduce the power consumption when supplying power to the ...

Claims

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Application Information

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IPC IPC(8): G09G3/20
Inventor 蔡宗宪郭泰玮
Owner 芯颖科技有限公司