Unlock instant, AI-driven research and patent intelligence for your innovation.

Display device and its common voltage generating circuit

A technology of voltage generation circuit and common voltage, applied in logic circuit connection/interface layout, static indicator, instrument, etc., can solve the problems of display device, such as the inability to effectively reduce the frame area, the large circuit structure, and occupying the display device.

Active Publication Date: 2015-06-03
AU OPTRONICS CORP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the circuit structure of the current common voltage generating circuit is too large and occupies the frame of the display device, so that the display device cannot effectively reduce the frame area to meet the requirement of a narrow frame.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Display device and its common voltage generating circuit
  • Display device and its common voltage generating circuit
  • Display device and its common voltage generating circuit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0062] Figure 3A It is a structural diagram of a display device according to the first embodiment of the present invention. Please refer to Figure 3A , the display device 300 provided in this embodiment includes a gate driving module 302 , a plurality of first common voltage generation circuits 304 , a plurality of second common voltage generation circuits 306 , and a display area 310 . In the display area 310, a plurality of scanning lines 314 and a plurality of common voltage lines 316 are arranged. Wherein, each scan line 314 and each common voltage line 316 respectively correspond to one of the plurality of pixel columns in the display area, and the first common voltage generating circuit 304 and the second common voltage generating circuit 306 are arranged in a staggered arrangement. As shown, the first common voltage generating circuit 304 is coupled to the corresponding odd pixel column, and the second common voltage generating circuit 306 is coupled to the correspo...

no. 2 example

[0071] Figure 4A It is a structural diagram of a display device according to the second embodiment of the present invention. Please refer to Figure 4A , the structure of the display device 400 provided in this embodiment is substantially the same as the structure of the above-mentioned display device 300 . The difference is that, in the display device 400 , the common voltage generation circuit 402 with the same structure is used to generate the storage capacitor common voltage Cst_com. The common voltage generating circuit 402 may adopt the structure of the common voltage generating circuit 202 or 204 described above. This embodiment takes the common voltage generating circuit 202 as an example, but not limited thereto.

[0072] Figure 4B It is a signal timing diagram of a storage capacitor common voltage signal according to the second embodiment of the present invention. Please merge reference Figure 2A as well as Figures 4A-4B , in this embodiment, more specifica...

no. 3 example

[0078] Figure 5A It is a structural diagram of a display device according to a third embodiment of the present invention. Please refer to Figure 5A , the display device 500 provided in this embodiment also has a gate driving module 502 , a plurality of first common voltage generation circuits 504 , a plurality of second common voltage generation circuits 506 and a display area 510 . In addition, the display area 510 is as Figure 3A The display area 310 has a plurality of data lines 512 , a plurality of scan lines 514 and a plurality of common voltage lines 516 . In the area surrounded by each data line 512 , scan line 514 and common voltage line 516 , a pixel 518 is respectively arranged.

[0079] More specifically, in this embodiment, the common voltage generation circuit 504 or 506 located in the Mth column is coupled to the M-nth scan line, so as to generate The storage capacitor common voltage signal Cst_com[M] of the Mth common voltage line is generated, wherein n ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A common voltage generation circuit suitable for a display device and the display device, including a latch and a voltage adjustment circuit. According to an input signal, the latch outputs a first latch output signal and a second latch output signal from a positive phase latch output terminal and a negative phase latch output terminal respectively. Wherein, the second latch output signal is inverse to the input signal and the first latch output signal. The voltage adjustment circuit is used for adjusting the voltage level of the first latch output signal or the second latch output signal.

Description

technical field [0001] The present invention relates to a structure of a display, and in particular to a structure of a circuit providing a common voltage in a display. Background technique [0002] figure 1 It is a pixel driving circuit of a known liquid crystal display device. Please refer to figure 1 , the pixel 100 includes a transistor 102 having a first end coupled to the data line 112 and a gate end coupled to the scan line 114 . In addition, the pixel 100 further includes a storage capacitor 104 and a liquid crystal capacitor 106 . One end of the storage capacitor 104 is coupled to the second end of the transistor 102 and the other end of the storage capacitor is coupled to the common voltage Cst_com, and one end of the liquid crystal capacitor 106 is coupled to the second end of the transistor 102 and the other end of the liquid crystal capacitor 106 is coupled to the liquid crystal Common voltage Clc_com. Wherein, the liquid crystal common voltage Clc_com is a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20
CPCG09G3/3655H03K19/0175
Inventor 吴旻鸿白承丘
Owner AU OPTRONICS CORP