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A technology for display devices and transistors, applied to static indicators, static memory, instruments, etc., can solve problems such as difficult to simplify the circuit composition of display devices

Active Publication Date: 2006-06-07
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, in order to sequentially drive the gate lines of each segment, there is a problem that a shift register circuit whose number of segments is twice the number of gate lines must be provided.
Therefore, it is difficult to simplify the circuit configuration of a display device including a shift register circuit.

Method used

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Experimental program
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no. 1 Embodiment

[0111] First refer to figure 1 , in this first embodiment, the display portion 2 is provided on the substrate 1 . In the display unit 2 , pixels 20 are arranged in a matrix. exist figure 1 In , only one pixel 20 is shown in order to simplify the drawing. Each pixel 20 is composed of: an n-channel transistor 21 (hereinafter referred to as a transistor 21), a pixel electrode 22, an opposite electrode 23 common to each pixel 20 arranged opposite to the pixel electrode 22, and surrounded by the pixel electrode 22 and the opposite electrode. The liquid crystal 24 between the electrodes 23 and the storage capacitor 25 constitute. The source of the transistor 21 is connected to the pixel electrode 22 and the storage capacitor 25 , and the drain is connected to the drain line. The gate of this transistor 21 is connected to a gate line.

[0112] Further, a horizontal switch (HSW) 3 and an H driver 4 for driving (scanning) a drain line of the display unit 2 are provided on the su...

no. 2 Embodiment

[0203] The second embodiment has almost the same configuration as the first embodiment. refer to Figure 5 , differs from the first embodiment in that: inside the V driver 5a, multiple stages of shift register circuit sections 501 to 505, scanning direction switching circuit section 600, input signal switching circuit section 700, and multiple stages of The transistors in the logic synthesis circuit sections 801 to 803 are changed to p-channel transistors. exist Figure 5 In order to simplify the drawing, only 5 stages of shift register circuit sections 501 to 505 and 3 stages of logic synthesis circuit sections 801 to 803 are shown, but shift registers corresponding to the number of pixels are actually arranged. Circuit section and logic synthesis circuit section.

[0204] Next refer to Figure 5 and Figure 6 , the operation of the V driver 5a of the liquid crystal display device of the second embodiment will be described. In the V driver 5a of this second embodiment, ...

no. 3 Embodiment

[0207] refer to Figure 7 , in the third embodiment, in the configuration of the above-mentioned first embodiment, the drain of the transistor connected to the node outputting the shift output signal of the shift register circuit part after the third stage, the supply enable signal to replace the positive side potential case.

[0208] That is, if Figure 7 As shown, in the third embodiment, multi-stage shift register circuit units 511 to 515, scanning direction switching circuit unit 610, input signal switching circuit unit 710, and multi-stage logic synthesis circuit units 811 to 813 are provided. exist Figure 7 In order to simplify the drawing, only 5 stages of shift register circuit sections 511 to 515 and 3 stages of logic synthesis circuit sections 811 to 813 are shown, but shift register circuits corresponding to the number of pixels are actually arranged. Department and Logic Synthesis Circuit Department.

[0209] In addition, the shift register circuit section 511...

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Abstract

The present invention provides a display device including a shift register circuit capable of suppressing an increase in power consumption. This display device is provided with a shift register circuit, and the shift register circuit includes: a shift register circuit part, including a first circuit part and a second circuit part, and the first circuit part has a first circuit part that is turned on in response to a first signal. 2 transistors; the second circuit section has a sixth transistor that is turned on in response to a second signal that can obtain a period of an on-state that does not overlap with a period of the on-state of the second transistor; and an input The signal switching circuit part switches the first and second signals respectively supplied to the second and sixth transistors.

Description

technical field [0001] The present invention relates to a display device, in particular to a display device with a shift register circuit. Background technique [0002] Conventionally, a resistive load type inverter circuit has been known. This inverter circuit is disclosed in, for example, Masatake Kishino, "Basics of Semiconductor Elements", published by Ohm Corporation, Japan, April 25, 1985, pp. 184-187. In addition, conventionally, a shift register circuit including the above-mentioned resistive load type inverter circuit is also known. The shift register circuit is used, for example, in a circuit for driving gate lines and drain lines of a liquid crystal display device and an organic electroluminescent display device. [0003] Figure 18 is a circuit diagram showing a shift register circuit including a conventional resistive load type inverter circuit. refer to Figure 18 A conventional shift register circuit 1000a is composed of a first circuit unit 1001a and a sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G11C19/00
Inventor 千田满堀端浩行
Owner SANYO ELECTRIC CO LTD
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