Transflective liquid crystal display device
a liquid crystal display and transparent technology, applied in non-linear optics, instruments, optics, etc., can solve the problems of lowering the image display quality, disadvantage in the absence of external light, and high power consumption, and achieve the effect of improving the luminance of the liquid crystal display devi
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first embodiment
[0041]FIG. 3 is a sectional view showing a structure of a transflective LCD device in accordance with the present invention.
[0042]As shown in FIG. 3, an LCD device 100 according to the present invention may include a liquid crystal (LC) panel 101 for implementing actual images, a first polarizer 162 and a second polarizer 163 disposed above and below the LC panel 101, respectively, for polarizing light incident on the LC panel 101 and light transmitted through the LC panel 101, respectively, a selective reflection film 170 located between the LC panel 101 and the second polarizer 163 for transmitting light incident through the second polarizer 163 and reflecting light incident through the LC panel 101, and a backlight unit 160 for supplying light to the LC panel 101.
[0043]The LC panel 101 may include a first substrate 120, a second substrate 140, and a liquid crystal (LC) layer 150 interposed between the first and second substrates 120 and 140.
[0044]The first substrate 120 is a TFT ...
second embodiment
[0084]As shown in FIG. 6, the transflective LCD device 200 may include a reflecting layer 125 formed on the common electrode 118 and the pixel electrode 119. Here, the reflecting layer 125 is made of a metal with high reflectance, such as Al or Al alloy. Accordingly, in the reflection mode, the reflecting layer 125 can reflect external light, which is incident onto the common electrode 118 and the pixel electrode 119, toward the LC layer 150, so as to improve luminance in the reflection mode of the transflective LCD device 200.
[0085]Here, an upper surface of the reflecting layer 125 is waved or embossed to disperse incident light, thereby allowing light with uniform luminance to be reflected to the LC layer 150.
[0086]Here, the drawing shows the configuration that the reflecting layer 125 is formed only on the common electrode 118 and the pixel electrode 119. However, the reflecting layer 125 may also be formed on the gate line 103 and the data line as well the common electrode 118 ...
third embodiment
[0088]In the transflective LCD device 100 the color filter layer 146 is partially removed to minimize light absorption by the color filter layer 146, thereby improving luminance of the transflective LCD device 100.
[0089]That is, referring to FIG. 7, the color filter layer 146 on the gate line 103, the common electrode 118 and the pixel electrode 119 is removed to form openings 147. Accordingly, light transmitted through the LC panel 101 is emitted externally without being absorbed at the openings 147, thereby improving luminance.
[0090]Here, since the openings 147 correspond to the gate line 103, the common electrode 118 and the pixel electrode 119, an image may not be realized, so a phenomenon that an image quality is lowered due to the opening 147 may not occur.
[0091]In the meantime, FIG. 7 shows that the openings 147 are formed above the gate line 103, the common electrode 118 and the pixel electrode 119. However, the openings 147 may also be formed above the data line. Alternati...
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