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Dynamic image driving circuit and method for organic electroluminescent displaying screen

A dynamic image and drive circuit technology, applied in the direction of electroluminescence light source, electric light source, light source, etc., can solve the problems of limited image data volume, unable to support dynamic image display of large-capacity image data, etc., achieve wide viewing angle, easy to implement, Effect of High Lumen Efficiency

Inactive Publication Date: 2007-12-19
EAST CHINA NORMAL UNIV +1
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Problems solved by technology

[0004] The disadvantage of the background technology is that the memory for storing image data and programs is the internal ROM of the single-chip microcomputer control module, which is limited by the storage capacity of the internal ROM, and the amount of image data stored is very limited. Usually, the image data of several static images can only be stored. Therefore, the existing OLED display drive circuit and method can only drive the OLED display to display several static images or characters in a slideshow mode, and cannot support dynamic image display of large-capacity image data.

Method used

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  • Dynamic image driving circuit and method for organic electroluminescent displaying screen
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  • Dynamic image driving circuit and method for organic electroluminescent displaying screen

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Embodiment Construction

[0035] The operating principle of the driving circuit of the present invention. See Figure 4.

[0036] The first step is to download the image data. Since the OLED display control module used supports 16-level gray scale, one pixel occupies 4 bits of storage space. After the image is intercepted, the desired data is obtained by processing it in the format of 4 bits per pixel. The maximum data capacity, that is, the storage capacity of the external data storage module (3) is 16M. The size of one frame of image is: 128*128*4=65536bit=8192byte. Therefore, the maximum number of frames that can be stored in the external data storage module (3) is: 16M / 8192=2k. If 16 frames are played per second, the maximum playback time of a single round: 2k / 16=128 seconds, which can reach more than 2 minutes, which is enough for the OLED display loop demonstration. Since the OLED display is a smaller screen, the 16 frames per second playback rate looks smooth. If the playing time of a singl...

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Abstract

A driving method of dynamic image includes adding external data storage module and image data download interface module on existed OLED display screen driving circuit, using external data module to store large amount of image data file required by dynamic image display and using image data download interface module to write the said image data file into the external data storage module.

Description

Technical field [0001] The invention relates to a dynamic image driving circuit and method of an organic electroluminescence display screen, that is, to a dynamic image driving circuit and method of an OLED display screen, and belongs to the technical field of OLED display screen drive. Background technique [0002] At present, flat panel display devices are changing with each passing day. As a new member of flat panel display devices, OLED display is still in the development stage in China, and the development of the display device driving circuit is also in its infancy in China. [0003] The driving circuit and method of the existing OLED display screen can be briefly described as follows. The existing OLED display driving circuit includes a power supply module, a single-chip microcomputer control module and an OLED display control module, and the OLED display control module drives the OLED display to emit light. The existing OLED display driving method: the power module ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/30H05B33/08G06F3/147H05B44/00
Inventor 刘锦高毛敏孙鸣费君辉徐奕斐杨雯静邱崧
Owner EAST CHINA NORMAL UNIV
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