Semi-penetrating and semi-reflecting liquid crystal display structure
A semi-transmissive, semi-reflective, liquid crystal display technology, used in static indicators, instruments, transistors, etc., can solve the problems of difficulty in improving the manufacturing qualification rate and increasing the cost of driving chips.
Inactive Publication Date: 2007-08-22
WINTEK CORP
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[0002] Transflective liquid crystal display, which can use ambient light as the display light of the reflected display area, compared with transmissive liquid crystal display, it has the advantage of saving power. However, please refer to Figure 1. The transmissive mode and reflective mode of the transflective liquid crystal display are limited by the optical design, so that the driving voltage-transmittance curve 1 (V-T curve) of the transmissive mode and the driving voltage-transmittance curve of the reflective mode 2 have different performances, but the driving method of the transflective liquid crystal display does not have a different design method due to the different optical characteristics of the transmissive mode and the reflective mode, so that the existing transflective liquid crystal display cannot Get the best display in both modes
[0003] U.S. Patent No. 6806929 proposes that the transmissive display area and the reflective display area in the same pixel are individually driven by two thin-film transistors (TFTs), so that the transmissive display area and the reflective display area are controlled by different driving methods. The performance of the best transmissive mode and reflective mode can be adjusted individually, thus improving the display effect of the transflective liquid crystal display. However, compared with the prior art, this design method requires Twice the number of thin film transistors, so it is difficult to improve its manufacturing yield, and it will increase the cost of the driver chip (drive IC)
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[0012] In order to have a deeper understanding and recognition of the features, purposes, and effects of the present invention, the preferred embodiments are now listed and described in conjunction with the accompanying drawings as follows:
[0013] Please refer to FIG. 2 , the present invention includes a first transparent substrate 10 , a driving element 15 , a pixel electrode 20 , a second transparent substrate 40 , a transparent common electrode 50 , and a liquid crystal layer 60 .
[0014] The drive element 15 is disposed on one side surface of the first transparent substrate 10, the drive element 15 includes a thin film transistor 16 and a storage capacitor 17, the pixel electrode 20 is disposed on the first transparent substrate 10 with the drive element On one side surface of 15 , the pixel electrode 20 is electrically connected to the driving element 15 , and the pixel electrode 20 separates a transmissive display area 70 and a reflective display area 80 . The pixel e...
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The invention discloses a transflective liquid crystal display (LCD) structure, and its transparent common electrodes are divided into independent first and second transparent common electrodes which respectively correspond to reflection display regions and transmission display regions to respectively control drive voltage-transmission rate curve of the reflection display regions and the transmission display regions by respectively modulating the voltage waveforms of the first and second transparent common electrodes, so as to separately obtain the optimum characteristic expression of reflection and transmission modes, and thus improving the display effect of the transflective LCD.
Description
technical field [0001] The invention relates to a transflective liquid crystal display, in particular to a liquid crystal display structure in which the driving voltage-transmittance curves of the reflective display area and the transmissive display area can be individually controlled. Background technique [0002] Transflective liquid crystal display, which can use ambient light as the display light of the reflected display area, compared with transmissive liquid crystal display, it has the advantage of saving power. However, please refer to Figure 1. The transmissive mode and reflective mode of the transflective liquid crystal display are limited by the optical design, so that the driving voltage-transmittance curve 1 (V-T curve) of the transmissive mode and the driving voltage-transmittance curve of the reflective mode 2 have different performances, but the driving method of the transflective liquid crystal display does not have a different design method due to the differ...
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Login to View More IPC IPC(8): G02F1/133G02F1/136H01L29/786G09G3/36
Inventor 刘锦璋吴易骏纪俊吉
Owner WINTEK CORP