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Data distribution device and data distribution method

A data distribution and data technology, applied in the direction of cathode ray tube indicators, optics, instruments, etc., can solve the problems of increasing the chip size of the timing controller and increasing the power consumption of the timing controller

Inactive Publication Date: 2009-01-21
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, when the timing controller is configured in such a manner that the data lines of the display device are divided into a plurality of data line groups, a plurality of source drivers corresponding to each data line group are respectively provided, and a plurality of source drivers are provided in parallel, When the pole driver outputs data (such as outputting left RGB data and right RGB data), as mentioned above, since it is necessary to set up two sets of line memories for storing RGB data and perform duplication, there is a significant increase in power consumption of the timing controller The problem
In addition, there is a problem that the chip size of the timing controller increases due to duplication of the line memory.

Method used

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  • Data distribution device and data distribution method
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  • Data distribution device and data distribution method

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no. 1 Embodiment approach

[0044] FIG. 1 shows a display device 10 in the first embodiment. The display device 10 is configured by connecting peripheral circuits to a display device main body 12 made of a TFT-LCD or the like. In the case where the display device main body 12 is a TFT-LCD, although not shown in the figure, the display device main body 12 is configured such that a liquid crystal is sealed between a pair of transparent substrates arranged opposite to each other with a predetermined interval therebetween. And form electrodes on the opposite surface of one of the transparent substrates, and on the opposite surface of the other transparent substrate, arrange at certain intervals along the X direction of Figure 1 and extend along the Y direction of Figure 1. (for example, 1920) data lines, a plurality of (for example, 1080) gate lines arranged at certain intervals along the Y direction of FIG. 1 and respectively extending along the X direction of FIG. Thin film transistors (TFTs) and electrod...

no. 2 Embodiment approach

[0069] Next, a second embodiment of the present invention will be described. In addition, the same code|symbol is attached|subjected to the same part as 1st Embodiment, and description is abbreviate|omitted. FIG. 4 shows a display device 46 in the second embodiment. The difference between the display device 46 of the second embodiment and the display device 10 described in the first embodiment is that the data lines provided in the display device main body 12 are divided into four groups, that is, the data lines of the address "1" ~"480" data line group, address "481" ~ "960" data line group, address "961" ~ "1440" data line group, address "1441" ~ "1920" data line group (attached to The three dotted lines in the display device main body 12 shown in FIG. 4 indicate the division positions of the four data line groups), and the plurality of source drivers 14 are also divided into four groups, that is, the data lines corresponding to the addresses "1" to "480" The first source ...

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Abstract

The invention provides a data allocating apparatus and method, which aims to reducing power consumption when allocating parallel output of display apparatus driving data inputted from the data source to multiple driving circuits. When concurrently inputting 1 / 2 of one RGB data line of display apparatus inputted from the data source in different periods to two groups of source driver of data line driving display apparatus respectively, a pair of RAM and a dual-port RAM having storage capacity of 1 / 2 line are set in advance. Processing is simultaneously and repeatedly performed when data written RAM is switched in periods, which includes writing residue RGB data into a dual-port RAM after 1 / 2 line of inputted RGB data at starting side is written into one of the RAM pair, and concurrently reading out RGB data from the one written with newest data of the RAM pair and the dual-port RAM after finish of RGB data writing, and concurrently outputting the read data to two groups of source driver.

Description

technical field [0001] The present invention relates to a data distributing device and method, in particular to a data distributing device that outputs driving data of all data lines of a display device input from a data source in parallel to a plurality of driving circuits that drive each data line of a display device, and a data distributing device that can be applied in The data distribution method in the data distribution device. Background technique [0002] In a display device (for example, TFT (Thin Film Transistor: Thin Film Transistor)-LCD (Liquid Crystal Display: Liquid Crystal Display) etc.) provided with a plurality of data lines in the X direction and a plurality of gate lines in the Y direction, set There is a timing controller which is composed of a semiconductor integrated circuit and controls the driving of the display device. The drive of the display device is controlled by performing the following processing on such a timing controller, that is, in each p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/36G09G5/39G09G3/36
CPCG09G3/3688G09G5/395G09G5/397G09G2310/0221G09G2340/14G09G2360/126G09G3/36G02F1/133G09G3/20
Inventor 游佐敦史
Owner OKI ELECTRIC IND CO LTD