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Display device and control method therefor

A display device and one-party technology, applied in semiconductor/solid-state device manufacturing, static indicators, instruments, etc., can solve the problems of uneven drive transistor characteristics, different luminance, uneven luminance, etc., and achieve high-precision threshold voltage correction , the detection accuracy is improved, and the effect of reducing the number of switching times

Active Publication Date: 2013-03-06
JOLED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in an active matrix organic EL display, the current flowing through the organic EL element varies from pixel to pixel even if the same data signal is supplied due to uneven characteristics of the drive transistor, resulting in differences in luminance and brightness. Disadvantages of unevenness (plaque)

Method used

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  • Display device and control method therefor
  • Display device and control method therefor
  • Display device and control method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0088] Next, Embodiment 1 of the present invention will be described with reference to the drawings.

[0089] The display device according to this embodiment has a plurality of light-emitting pixels arranged in a matrix of m (m is an integer of 4 or more) rows and n (n is an integer of 1 or more) columns, and includes a first signal line and a second signal line. The first signal line and the second signal line are arranged in the column direction corresponding to the m light-emitting pixels corresponding to the n columns of the matrix of m rows and n columns among the plurality of light-emitting pixels , supplying the signal voltage for determining the luminance of the light-emitting pixels to the light-emitting pixels, and the first signal line is arranged on the left side and the right side of the first switch transistor and the second switch transistor provided by the light-emitting pixels in the corresponding column On one side, the second signal line is arranged on the o...

Embodiment approach 2

[0214] Next, Embodiment 2 of the present invention will be described with reference to the drawings.

[0215] Figure 10 It is a circuit configuration diagram showing a part of the display panel included in the display device according to Embodiment 2 of the present invention. exist Figure 10 shows two adjacent driving blocks and each control line, each scan line and each signal line. In the drawings and the following description, each control line, each scanning line, and each signal line is indicated by "reference number (block number, row number in the block)" or "reference number (block number)".

[0216] Figure 10 Compared with the display device 1 of Embodiment 1, the display device shown has the same circuit structure of each light-emitting pixel, and the only difference is that the second control line 131 is not shared for each driving block but is emitted for each driving block. The pixel row is connected to a scanning / control line driver circuit 14 (not shown)....

Embodiment approach 3

[0252] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0253] The electrical structure of the display device of this embodiment is the same as that of the light-emitting pixel circuit structure. figure 1 The structure shown is the same. That is, the display device of this embodiment includes a display panel 10 and a timing control circuit 20 . The display panel 10 includes a plurality of light-emitting pixels 21A and 21B, a signal line group 12 , a control line group 13 , a scanning / control line driving circuit 14 , and a signal line driving circuit 15 , which will be described later.

[0254] Hereinafter, the description of the configuration overlapping with Embodiment Modes 1 and 2 will be omitted, and only the configuration related to the light-emitting pixels 21A and 21B will be described.

[0255] The light emitting pixels 21A and 21B are arranged in a matrix on the display panel 10 . Here, the pixels 21A and 21B c...

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Abstract

The invention provides a display device and a control method therefor. The display device has a plurality of light-emitting pixels arranged in a matrix and comprises two or more drive blocks where one drive block is constituted by a plurality of light-emitting pixel rows, and the display device is provided with a first signal wire (151) and a second signal wire (152) arranged in the column direction of the plurality of light-emitting pixels. The first signal wire (151) is placed on one side, the left or the right side, of the light-emitting pixels in the corresponding column. The second signal wire (152) is arranged on the other side, the left or the right side, of the light-emitting pixels in the corresponding column. A light-emitting pixel is provided with an organic EL element and a current control part. Furthermore, a light-emitting pixel (11A) in the k-th drive block is connected by way of a first connecting wire to the first signal wire (151), and a light-emitting pixel (11B) in the (k+1)-th drive block is connected by way of a second connecting wire to the second signal wire (152). The first signal wire (151) is arranged so as to not intersect the second connecting wire, and the second signal wire (152) is arranged so as to not intersect the first connecting wire. The display device has reduced output load of a drive circuit and improved display quality.

Description

technical field [0001] The present invention relates to a display device and a control method thereof, and more particularly, to a display device using a current-driven light-emitting element and a control method thereof. Background technique [0002] As a display device using a current-driven light-emitting element, a display device using an organic electroluminescence (EL) element is known. An organic EL display device using this self-luminous organic EL element does not require a backlight required for a liquid crystal display device, and is suitable for thinning the device. In addition, the viewing angle is not limited, and it is expected to be put into practical use as a next-generation display device. In addition, the brightness of each light emitting element of the organic EL element used in the organic EL display device is controlled by the value of the current flowing therein, which is different from the liquid crystal cell being controlled by the voltage applied t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30G09G3/20H01L51/50
CPCG09G3/30H01L51/50G09G3/20H01L27/3276G09G3/3233G09G2300/0426G09G2300/0819G09G2300/0842G09G2300/0861G09G2300/0866G09G2300/0876G09G2310/0216G09G2310/0218G09G2320/0219G09G2320/045G09G2330/021H10K59/131
Inventor 松井雅史小野晋也
Owner JOLED INC