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Control method, controller, and device for driving electronic paper, and electronic paper display device

A control method and electronic paper technology are applied in the fields of controllers, control methods for driving electronic paper, devices and electronic paper display devices, and can solve the problems of slow gray level conversion, low work efficiency, and many manpower and material resources.

Active Publication Date: 2018-08-24
GUANGZHOU OED TECH INC
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Problems solved by technology

[0002] According to the published literature and patents on the driving method of microcapsule electrophoresis display, the best driving method is generally determined by experimental trial method and optimization method. It takes a lot of time and investment to achieve the required display function for electronic paper with different performance. manpower and material resources for debugging, its work efficiency is very low
In addition, the existing driving methods cannot well and accurately control the display gray levels at all levels, and the conversion speed between gray levels is relatively slow.

Method used

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  • Control method, controller, and device for driving electronic paper, and electronic paper display device
  • Control method, controller, and device for driving electronic paper, and electronic paper display device
  • Control method, controller, and device for driving electronic paper, and electronic paper display device

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Embodiment Construction

[0093] The term "grayscale" is used herein in its traditional meaning in the imaging field to refer to a state intermediate between two extreme optical states of a pixel, and not necessarily to a black-and-white transition between these two extreme states, where the extreme States can be negative and dark blue, negative and dark red, etc., so that the "grayscale" of the intermediate state is essentially light blue or reddish, etc. In fact, the transition between the two extreme states may not be a change in color at all.

[0094] The term "actuation amount" means herein the product of its applied voltage and applied time,

[0095] The term "normal saturation polarization state" herein means the saturation polarization state to which a pixel is driven with a positive voltage. E.g Figure 1-3 The state W' inM .

[0096] The term "normal remanent polarization state" herein means the remanent polarization state of a pixel after transitioning from the normal saturation polarizat...

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Abstract

The invention relates to a control method for driving electronic paper, a controller, a device, and an electronic paper display device. The method comprises the steps: storing a lookup table which comprises data representing a needed drive amount for converting a residual polarized state of a pixel into each gray level; receiving the data representing an expected gray level of the pixel; generating an output signal representing a drive amount to be applied to the pixel, and enabling the pixel to be converted into a saturated polarized state from a current gray level; generating an output signal representing drive amount to be applied to the pixel, and enabling the pixel to be converted into a residual polarized state from the saturated polarized state; searching the data of the drive amount needed for the conversion from the residual polarized state to the saturated polarized state from the lookup table; and generating an output signal representing the drive amount to be applied to the pixel according to the data, searched I the lookup table, of the drive amount. Through employing a hysteresis loop and an electric polarization curve in a dynamic electric polarization process of electronic paper, the method builds a drive waveform design principle, can precisely control the gray scale display of the electronic paper, has a no-flicker effect and is easy for debugging.

Description

technical field [0001] The invention relates to a technology for driving electronic paper, in particular to a control method, a controller, a device and an electronic paper display device for driving electronic paper. Background technique [0002] According to the published literature and patents on the driving method of microcapsule electrophoresis display, the best driving method is generally determined by experimental trial method and optimization method. It takes a lot of time and investment to achieve the required display function for electronic paper with different performance. The human and material resources are used for debugging, and the work efficiency is very low. In addition, the existing driving methods cannot control the gray levels of various levels of display well and accurately, and the conversion speed between gray levels is relatively slow. Contents of the invention [0003] Based on the existing problems in the prior art, one of the technical problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/34
Inventor 陈宇史隆培林永强王喜杜
Owner GUANGZHOU OED TECH INC
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