COA type liquid crystal display panel
A liquid crystal display panel and liquid crystal layer technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of increasing distance, reducing display stability, increasing distance, etc., achieving shortened vertical distance, improved display quality, and large storage The effect of capacitance
Active Publication Date: 2015-11-11
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
[0008] However, in the lower substrate 200 of the existing COA liquid crystal display panel, since the color photoresist layer 150 extends to the outside of the frame electrode 175 and is located between the frame electrode 175 and the common electrode line 120, Thereby increasing the distance between the frame electrode 175 and the common electrode line 120, according to the capacitance calculation formula C=εS / d (wherein, ε is the dielectric constant of the medium between the pole plates according to the capacitance calculation formula of the parallel plate capacitor, S is the pole plate area, d is the distance between the pole plates), the size of the capacitance is inversely proportional to the distance between the two pole plates forming the capacitance, therefore, the setting of the color photoresist layer 150 makes the distance between the frame electrode 175 and the common electrode line 120 increase , that increases the storage capacitor C st The distance between the two plates, resulting in a storage capacitor C st Reduced, unable to meet the demand for leakage current in the display cycle, reducing the stability of the display
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[0029] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0030] see image 3 and Figure 4 , the present invention provides a COA liquid crystal display panel, comprising a lower substrate 1, an upper substrate 2 opposite to the lower substrate 1, and a liquid crystal layer (not shown) between the lower substrate 1 and the upper substrate 2 );
[0031] The lower substrate 1 includes several pixel units, and the pixel units include a first substrate 11, a common electrode line 12 and a gate scanning line 13 arranged on the first substrate 11, and a gate scanning line 13 arranged on the common electrode line 12. The insulating layer 14 on the gate scan line 13, the color photoresist layer 15 arranged on the insulating layer 14, the passivation layer 16 arranged on the color photoresist layer 15, and...
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The invention provides a COA type liquid crystal display panel. In each pixel unit of a lower substrate, boundaries in all directions of a colored light resistance layer are arranged on the inner sides of frame electrodes and a public electrode line so that the colored light resistance layer cannot be arranged between the frame electrodes and the public electrode line any more; thus, the vertical distance between the frame electrodes and the public electrode line is shortened, a large storage capacitor is guaranteed, and the display quality of the COA type liquid crystal display panel is improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a COA type liquid crystal display panel. Background technique [0002] A liquid crystal display device (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Such as: LCD TV, mobile phone, personal digital assistant (PDA), digital camera, computer screen or laptop screen, etc. [0003] Generally, a liquid crystal display device includes a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Among them, the structure of the liquid crystal panel is mainly composed of a thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate), a color filter substrate (ColorFilter, CF), and a liquid crystal layer (LiquidCrystalLayer) arranged between the two substrates. The rotation of the liquid crystal molecules in the liquid crystal lay...
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IPC IPC(8): G02F1/1335G02F1/1362G02F1/1343
CPCG02F1/133512G02F1/133514G02F1/134309G02F1/136213G02F1/134363G02F1/136222G02F1/133302G02F1/136218G02F1/133345G02F1/133371G02F1/133707G02F2201/121G02F2201/123G02F2201/52
Inventor 叶岩溪
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD