A signal output circuit, display panel and display device
A signal output and circuit technology, applied in the fields of signal output circuits, display panels and display devices, can solve the problems of inconsistent brightness in the display area and large signal attenuation, and achieve the effect of improving the display effect and reducing the difference.
Active Publication Date: 2017-10-24
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0004] The present invention provides a signal output circuit, a display panel and a display device, which are used to solve the problem of inconsistent brightness in the display area caused by the large attenuation of the working electrical signal at the output end of the data line in the prior art TFT LCD display panel. Improve picture quality
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[0059] The signal output circuit of the embodiment of the present invention includes a signal acquisition circuit and a signal compensation circuit; wherein, the signal acquisition circuit is used to collect the working electrical signal of the first data line in the display area when the trigger signal is at an effective level; the signal compensation circuit , used to determine the original input electrical signal of the first data line, and after the compensation electrical signal is obtained according to the original input electrical signal and the working electrical signal, the compensation electrical signal is superimposed on the original input electrical signal of the first data line, and the The superimposed electrical signal is input into the first data line. In this technical solution, since the signal acquisition circuit in the embodiment of the present invention can collect the working electrical signal of the first data line, the signal compensation circuit can obt...
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The invention relates to the field of display technology, in particular to a signal output circuit, a display panel and a display device. The signal output circuit includes: a signal acquisition circuit for collecting a working electrical signal when the trigger signal is at an effective level, and a circuit for comparing the compensation electrical signal with the original input electrical signal of the first data line after determining the compensation electrical signal Superimposing, inputting the superimposed electrical signal to the signal compensation circuit in the first data line. Since the signal acquisition circuit in the embodiment of the present invention can superimpose the compensation electrical signal on the original input electrical signal of the data line, the attenuation of the working electrical signal in the data line is compensated, thereby reducing the area of the output end of the data line in the display panel. difference in brightness.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a signal output circuit, a display panel and a display device. Background technique [0002] With the progress of display technology, TFT LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Field Effect Transistor Liquid Crystal Display) is more and more favored by people because of its high contrast ratio, strong layering and bright colors. [0003] However, in the prior art, due to the increase in the size of the TFT LCD display panel, the load on the data line in the display area increases, and in order to meet the high-resolution performance of the display panel, the data line separation design is usually used to prolong the charging time , resulting in figure 1 The working electrical signal at the output end P1 or P2 of the data line in the shown display area is greatly attenuated, and the degree of attenuation is not necessarily the same, so it is easy to cause ob...
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IPC IPC(8): G09G3/36
Inventor 刘莎
Owner BOE TECH GRP CO LTD