Pixel structure and display device
A technology of pixel structure and branch structure, which is applied in the field of pixel structure and display devices, can solve the problems of difficult increase of storage capacitor, different charging capacity, and decrease of device on-state current, so as to improve display performance, improve charging capacity, and reduce feedback The effect of voltage
Active Publication Date: 2017-02-22
XIAMEN TIANMA MICRO ELECTRONICS +1
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Problems solved by technology
However, for high PPI products, due to the small pitch of each pixel, it is difficult to increase the storage capacitance in the pixel structure; reduce the channel width in the pixel structure or reduce the voltage difference between the turn-on and turn-off voltage of the TFT liquid crystal screen It means that the charging ability is further compressed; reducing the capacitance of the gate oxide layer in the pixel structure means thickening the film thickness or reducing the dielectric constant, which not only goes against the trend of device thinning and miniaturization, but also makes the device open The current drop causes the charging ability to drop; reducing the channel width in the pixel structure can reduce the feedthrough voltage and improve the charging ability, but it will also increase the gate delay (Gate delay), resulting in different charging capabilities on the left and right sides of the panel, etc. new question
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[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.
[0038] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the invention. However, those skilled in the art will apprecia...
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The invention discloses a pixel structure and a display device. The pixel structure comprises a scanning line and a semiconductor pattern, wherein the scanning line has a branch structure; the semiconductor pattern is intersected with the scanning line and the branch structure; and the semiconductor pattern comprises a first channel region located at the lower part of the scanning line, a second channel region located at the lower part of the branch structure and doped regions located at two sides of the first channel region and the second channel region, wherein the width of the second channel region is smaller than that of the first channel region. According to the pixel structure, the display performance of a display screen can be improved.
Description
technical field [0001] The present invention relates to the field of liquid crystal display, in particular to a pixel structure and a display device. Background technique [0002] With the rapid development of display technology, high PPI (Pixels Per Inch), even ultra-high PPI has become an inevitable trend. Image resolution is generally represented by PPI (pixels per inch). The higher the PPI value, the higher the density (number of pixels) that the display can display images. The higher the PPI displayed on the display, the richer the details of the displayed picture and the higher the fidelity. However, with the improvement of screen PPI, the arrangement of pixels is getting closer and smaller, and the size of each pixel is getting smaller and smaller, which not only brings great challenges to device design, but also causes many headaches. [0003] Among the many problems restricting high PPI technology, insufficient charging capacity is one of the reasons for challengi...
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IPC IPC(8): H01L27/12G02F1/1362
CPCG02F1/1362H01L27/1233H01L27/124H01L29/78645H01L27/1255H01L29/78696H01L29/78672G02F1/136286G02F1/1368G02F2202/104H01L29/78648
Inventor 蓝学新
Owner XIAMEN TIANMA MICRO ELECTRONICS