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Display driving apparatus, display module package, display panel module, and television set

A technology for display driving and display output, which is applied in the fields of display driving device, display module packaging, display module and TV, and can solve the problems of not reducing current consumption, not reducing power consumption, and not fully reducing power consumption, etc., to achieve Reduced power consumption and EMI suppression effects

Inactive Publication Date: 2013-04-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the display driving device disclosed in Patent Document 1, the potential of the common floating potential line varies depending on the pattern of display data.
For example, when all the output terminals change from H level to L level when display data is switched, the display driving device of Patent Document 1 cannot reduce power consumption.
That is, the display drive device of Patent Document 1 depends on the mode of the display data, so there may be cases where the power consumption cannot be sufficiently reduced.
[0014] In addition, the display driving device of Patent Document 2 can reduce the peak current to suppress EMI, but has no effect of reducing current consumption.

Method used

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  • Display driving apparatus, display module package, display panel module, and television set
  • Display driving apparatus, display module package, display panel module, and television set
  • Display driving apparatus, display module package, display panel module, and television set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The display driving device according to Embodiment 1 of the present invention performs voltage driving in two steps at different timings for a plurality of display output terminals. Furthermore, the display driving device according to the first embodiment of the present invention includes a step potential supply circuit for supplying a step potential. Therefore, the display driving device according to the first embodiment of the present invention can reduce power consumption and suppress EMI.

[0061] First, the configuration of the display driving device according to Embodiment 1 of the present invention will be described.

[0062] figure 1 It is a configuration diagram of a display driving device according to Embodiment 1 of the present invention.

[0063] figure 1 The display driving device 100 shown obtains n (n is an integer greater than or equal to 2, such as 192 or 388, etc.) pixel data contained in the serial display data 202 of one horizontal line in units o...

Embodiment 2

[0160] The display driving device according to the second embodiment of the present invention is a modified example of the display driving device 100 according to the first embodiment. The display driving device according to the second embodiment of the present invention drives the plurality of display output terminals 190 to the step potential at the same timing, and then drives them to the L level or the H level at different timings.

[0161] First, the configuration of a display driving device according to Embodiment 2 of the present invention will be described.

[0162] Figure 7 It is a block diagram showing the configuration of a display driving device according to Embodiment 2 of the present invention. Also, for figure 1 The same elements are denoted by the same symbols, and explanations thereof are omitted.

[0163] Figure 7 The difference between the shown display driving device 101 and the display driving device 100 involved in Embodiment 1 is that it includes a...

Embodiment 3

[0223] In Embodiment 3 of the present invention, a display driving device including the display driving device 100 or 101 related to Embodiment 1 or Embodiment 2, a display module package, a display screen module, and a television are described.

[0224] Figure 13 It is a plan view showing the structure of a display module package using the display driving device 100 or 101 according to the present invention.

[0225] Figure 13 The shown display module package 600 includes a display input signal joint terminal portion 601 , an FPC (flexible printed circuit board) 602 , a display output joint terminal portion 603 , and a data driver 604 .

[0226] The data driver 604 is the above-mentioned display driving device 100 or 101 according to the present invention.

[0227] The display input signal connection terminal section 601 is connected to a signal input terminal of a data driver 604 (a terminal for inputting a horizontal synchronization signal 201 , serial display data 202 ...

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Abstract

A display driving apparatus includes: n level shift units shifting a voltage level of n pixel data; a step potential providing unit providing a step potential; a change judgment unit judging whether or not each of the n pixel data has changed from pixel data of an immediately previous cycle; a delay unit generating n timing signals changing with different timings; and a control unit performing control such that the display output terminal corresponding to the pixel data judged to have changed by the change judgment unit is provided with: the step potential provided by the step potential providing unit during a first time period included in each of the cycle; and a potential shifted by the corresponding level shift unit during a second time period that is different from each other and is based on a timing of change of the corresponding timing signal.

Description

technical field [0001] The present invention relates to a display driving device, a display module package, a display screen module and a television, and in particular to a display driving device, which drives n The signals are output to n display output terminals, and the n driving signals respectively drive the screen electrodes. Background technique [0002] In recent years, PDPs (Plasma Display Panels) have attracted attention as thin, large-screen, and high-definition displays. A PDP includes a plurality of discharge cells arranged in a matrix as pixels. The PDP displays images using light emission generated when discharge cells are discharged. [0003] A general AC (alternating current) type PDP has a plurality of display electrodes arranged in parallel and a plurality of data electrodes arranged in a state perpendicular to these display electrodes. The display driving device of the PDP drives these data electrodes, that is, makes a capacitive load a driving object....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/288G09G3/291G09G3/293G09G3/296H04N5/66
CPCG09G3/288G09G2330/06G09G2310/0286G09G2330/021G09G3/2096G09G2310/0221H01L2924/0002H01L2924/00
Inventor 森山诚一末永纯一山下谦治
Owner PANASONIC CORP