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Electro-optical device, method of driving electro-optical device, and electronic apparatus

一种电光学装置、驱动方法的技术，应用在辨认装置、电固体器件、彩色电视的零部件等方向，能够解决经时劣化、显示面板制造无序偏差等问题

Active Publication Date: 2005-02-02
ELEMENT CAPITAL COMMERCIAL CO PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, problems such as ambient illuminance when using electro-optical devices, time-dependent deterioration of electro-optical elements included in pixels, or display flare caused by manufacturing disorder of display panels, etc.

Method used

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  • Electro-optical device, method of driving electro-optical device, and electronic apparatus
  • Electro-optical device, method of driving electro-optical device, and electronic apparatus
  • Electro-optical device, method of driving electro-optical device, and electronic apparatus

Examples

Experimental program
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Effect test

no. 1 approach

[0048] FIG. 1 is a block diagram of the structure of an electro-optical device according to this embodiment. For example, the display unit 1 is an active matrix type display panel in which electro-optical elements are driven by driving elements such as TFTs. In this display unit 1, pixels 2 of m dots×n lines are arranged in a matrix (two-dimensional plane). In addition, the display unit 1 is provided with scanning line groups Y1 to Yn each extending in the horizontal direction and data line groups X1 to Xm each extending in the vertical direction, and pixels 2 are arranged corresponding to their intersections. In this embodiment, although one pixel 2 is used as the minimum display unit of an image, one pixel 2 may be constituted by three sub-pixels of RGB like a color panel. In addition, in FIG. 1, a power supply line for supplying predetermined voltages Vdd and Vss to each pixel 2 and the like are omitted.

[0049] FIG. 2 is an example of a circuit diagram of the pixel 2. One pix...

no. 2 approach

[0097] FIG. 18 shows a configuration diagram of the current DAC 46 according to the second embodiment. The current DAC 46 includes a data signal generating unit 46a that generates a data signal to be supplied to the pixel 2 based on a current as a main body, and adding a correction value generating unit 46b and a drive voltage correcting unit 46d. The difference from the configuration example of FIG. 14 is that the structure of the data signal generation unit 46a is slightly different, and the drive voltage correction unit 46d is provided instead of the gradation correction unit 46c. Other than that, they are the same as the circuit elements of FIG. 14, so the same reference numerals are attached, and the description here is omitted.

[0098] The data signal generating unit 46a is provided between the data line X and the reference voltage Vss, and has a pair of switching transistors SW and driving transistors DR connected in series with the number of bits (that is, 6) of the conve...

no. 3 approach

[0104] Fig. 20 is an explanatory diagram of the outline features of the third embodiment. In this embodiment, the LUT process of the gradation characteristic generating unit 9 performs correction in consideration of two correction factors ΔDlx and ΔDtl, and the conversion data Dcvt is generated from the display data D. A part of the data signal generating section 46a constituting the pixel driving section does not consider the three correction factors ΔDd, ΔDmura, and ΔDta, and directly generates the data current Idata from the converted data Dcvt, and supplies it to the pixel 2 via the data line X.

[0105] On the other hand, the driving period control section 10 constituting a part of the pixel driving section controls the driving period of the pixel 2 shown in FIG. 2 in consideration of three correction factors ΔDd, ΔDmura, and ΔDta. FIG. 21 is a driving timing chart of the pixel 2 as an example. Between the falling time t1 of the scanning signal SEL and the rising time of the ...

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Abstract

To stabilize display quality by performing correction processing corresponding to a plurality of disturbance elements. A gradation characteristics forming section 9 forms conversion data Dcvt having gradation characteristics changed in the gradation characteristics from display data D regulating the gradation of a pixel by referencing a conversion table in which correction factors [Delta]Dlx and [Delta]Dtl are reflected in the contents of description. A data line driving circuit 4 uses processing of the kind different from that of the gradation forming section 9 and drives the pixel 2 after correcting the gradation characteristics of the conversion data Dcvt by the correction factors [Delta]Dta, [Delta]Dd and [Delta]Dmura.

Description

Technical field [0001] The present invention relates to an electro-optical device, a driving method of the electro-optical device, and an electronic device, and in particular to correction processing of display data of a predetermined pixel gray scale. Background technique [0002] Currently, electro-optical devices with correction functions are known that can suppress the degradation of display quality caused by interference factors. For example, Patent Document 1 discloses a technique in which a plurality of temperature sensors provided in the display panel detects temperature changes caused by the heat generation of the organic EL element, and performs drive correction of the display panel accordingly. [0003] However, as a disturbance factor that affects the display quality, there are various factors other than the temperature factor mentioned above. For example, there are problems such as ambient illuminance when using an electro-optical device, deterioration of electro-opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50G09F9/00G09G3/20G09G3/30G09G3/32H04N5/70
CPCG09G3/2018G09G2300/0842G09G2320/041G09G3/3275G09G2340/0428G09G2320/0626G09G2320/0285G09G2320/048G09G3/2014G09G2300/0861G09G3/20G09G3/325G09G2320/0276G09G2360/144F16B39/24F16B43/00
Inventor 河西利幸今村阳一
Owner ELEMENT CAPITAL COMMERCIAL CO PTE LTD
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