Abstract: An IPS mode LCD (100) includes a first substrate (111), a second substrate (114), a layer of liquid crystal molecules (116) held therebetween, a plurality of gate lines (130) arranged on the second substrate, an insulative layer (120) formed on surfaces of the second substrate and the gate lines, a plurality of data lines (117) arranged on the insulative layer, a passivation layer (118) formed on surfaces of the insulative layer and the data lines, and a plurality of pixel electrodes (127) and common electrodes (115) arranged on the passivation layer. The common electrodes partly overlap corresponding data lines. Back light transmitting from the second substrate toward the first substrate is blocked by the data lines and only parts of the common electrodes. Thus an aperture ratio of the IPS mode LCD is raised, and a brightness and display quality of the IPS mode LCD is enhanced.

Abstract: A simplified method for forming a TFT includes four photolithographic processes. A first photolithographic process is used for forming a gate electrode (42). A second photolithographic process is used for forming a source electrode (742), a drain electrode (741), a channel layer (82), a source ohmic contact layer (832), and a drain ohmic contact layer (831). A third photolithographic process is used for forming a passivation layer (110). A fourth photolithographic process is used for finally forming a pixel electrode (120). The source electrode and the drain electrode are made of molybdenum or a molybdenum alloy.

Abstract: An LCD device (300) includes a first substrate (30), a second substrate (40) disposed parallel to the first substrate, and a liquid crystal layer (33) having liquid crystal molecules interposed between the substrates. The first substrate includes a transparent plate (31), a color filter layer (38) formed on the transparent plate opposite to the second substrate, and a common electrode (39) formed on the color filter layer. The common electrode has a plurality of protruding portions (391) protruding toward the second substrate. The second substrate has pixel electrodes (35) opposite to the first substrate. The pixel electrodes define slits (351) therebetween. This configuration ensures to generate a symmetric electric field (E) distributing in several directions between the common and pixel electrodes so as to form several domains.

Abstract: A hybrid latch flip-flop is applied to an LCD. The hybrid latch flip-flop includes a negative pulse generation unit, a latch flip-flop, and a buffer unit. The latch flip-flop includes a sampling unit and a hold unit. One feature of the present invention is that fewer transistors are employed in the hybrid latch flip-flop, which gives rise to low power consumption. Another feature of the present invention is that, by employing the negative pulse generation unit of a double edge trigger type, the data processing capacity of the hybrid latch flip-flop is doubled without changing the clock frequency.

Abstract: A hybrid latch flip-flop is applied to an LCD. The hybrid latch flip-flop includes a positive pulse generation unit, a latch flip-flop, and a buffer unit. The latch flip-flop includes a sampling unit and a hold unit. One feature of the present invention is that fewer transistors are employed in the hybrid latch flip-flop, which gives rise to low power consumption. Another feature of the present invention is that, by employing the positive pulse generation unit of a double edge trigger type, the data processing capacity of the hybrid latch flip-flop is doubled without changing the clock frequency.

Abstract: A liquid crystal display device (100) includes an upper substrate (12), a lower substrate (11), and a liquid crystal layer (130) between the upper substrate and the lower substrate. The upper substrate includes an upper polarizer (143) and a color filter layer (127), the upper polarizer being an extraordinary type polarizer. The lower substrate includes a reflective film (119). A multiplicity of pixel electrodes (113) and common electrodes (111) are positioned at the lower substrate, for applying a voltage to the liquid crystal layer. The display device has a wide viewing angle, can work at high temperatures, and is relatively thin and compact. Further, the color filter layer is positioned above the upper polarizer. Optical beams reach the color filter layer after passing back through the liquid crystal layer and the upper polarizer. This reduces or eliminates color filter de-polarizing, and yields a high contrast ratio over wide viewing angles.

Abstract: An IPS-LCD device (3) includes opposite first and second substrates (30, 40) in a spatial parallel relation, a liquid crystal layer (36) having liquid crystal molecules interposed between the substrates, and a peripheral sealant (37) disposed between the substrates for sealing a space therebetween. The first substrate has an over coat layer (34) covered on a surface facing the second substrate. The over coat layer defines a peripheral sealing region (341) having a plurality of holes (342). The sealant interlocks with the sealing region in the holes, which ensures that the substrates are strongly combined together. This makes the IPS-LCD device sturdy and durable.

Abstract: A transflective liquid crystal display (TR-LCD) (2) includes a first substrate (22) and a second substrate (29) disposed opposite each other and spaced apart a predetermined distance. A liquid crystal layer (200) is interposed between the first substrate and the second substrate. A color filter layer (20), a common electrode (28), a first polarizer (24) and a first alignment film (26) are positioned on an inner surface of the first substrate. A transflective layer (21), a second polarizer (27) and a second alignment film (25) are positioned on an inner surface of the second substrate. The second polarizer is an extraordinary type polarizer. The polarizers are made of a modified organic dye material which exists in a liquid-crystalline phase, thereby enabling the TR-LCD to work in temperatures up to 200 degrees Centigrade.

Abstract: A color filter (100) includes pixels (110), each pixel including three sub-pixels (111), and each sub-pixel including a reflection section (R) and a transmission section (T). In each pixel, the transmission sections and the reflection sections are alternately arranged along each row of the sections and along each column of the sections. The alternating arrangement of the transmission sections and the reflection sections of the pixels can provide a uniform pattern of hue balance over the whole display area. Furthermore, in various embodiments described, different optical thicknesses of the transmission sections and the reflection sections (or color layers of the reflection sections) can provide uniform hue over the whole display area.

Abstract: An in-plane switching (IPS) liquid crystal display device (100) includes pixel units each having a storage capacitor. The storage capacitor is formed by a common electrode (112), a drain electrode (103), and a counter electrode (110). The common electrode is electrically coupled with the counter electrode. The counter electrode substantially covers the drain electrode, for shielding unexpected coupling effects on the drain electrode due to data signals on a data line (101) driving other pixels of the liquid crystal display device.

Abstract: A color filter includes a substrate, a black matrix located on the substrate, a color layer formed on the substrate, and an over coat layer formed on the substrate to cover the black matrix and the color layer. A plurality of photo spacers are located corresponding to the black matrix, and engage with the over coat layer tightly. Therefore, an IPS LCD using the above-mentioned color filter has a steady configuration, and a cell gap of the LCD is consistent.

Abstract: A fringe field switching liquid crystal display (100) includes a first substrate (110) and a second substrate (120) disposed opposite each other and spaced apart a predetermined distance. A liquid crystal layer (130) is interposed between the first and second substrates. A plurality of pixel electrodes (113) is formed at the first substrate, and a counter electrode (111) is formed between the first substrate and the pixel electrodes. The pixel electrodes are parallel to each other, and the counter electrode is overlapped partially by the pixel electrodes. Two polarizers (143, 141) are attached at the first substrate and the second substrate, respectively. At least one of the two polarizers is an extraordinary type polarizer. Therefore a good contrast ratio over large viewing angles is achieved by suppressing light leakage. The positioning of a color filter (127) reduces or eliminates the adverse effects of color filter de-polarizing.

Abstract: An in plane switching liquid crystal display (2) includes a first substrate (220) and a second substrate (210) disposed opposite each other and spaced apart a predetermined distance. A liquid crystal layer is interposed between the first substrate and the second substrate, the liquid crystal layer containing a plurality of liquid crystal molecules (230). A plurality of pixel electrodes (213) and a plurality of counter electrodes (211) are formed on the first substrate in parallel alternating fashion. Two polarizers (240, 241) are disposed on the first substrate and the second substrate, respectively. A transflector (217) capable of transmitting and reflecting light beams is disposed on the first substrate. The in plane switching liquid crystal display can thus utilize ambient light beams as well as light beams provided by a backlight, so that the in plane switching liquid crystal display has low power consumption.

Abstract: The present invention provides a display system (200) for wirelessly driving display devices. In one embodiment, the display system includes a signal processing unit (210), an interface unit (220) having a control unit (222), a first antenna (201), a second antenna (202) and a display device (230). In contrast to a conventional wirelessly driven display system, the control unit of the present invention is integrated into the interface unit. By doing so, the display area of the display device may be enlarged. Furthermore, the display system may also allow two-way communication between the display device and the signal processing unit by incorporating an input signal detector.

Abstract: An LCD device (2) includes two substrates (21, 22), a liquid crystal layer (27) therebetween, and gate lines (24) and data lines (23) formed on one of the substrates thereby defining pixel regions. A set of pixel electrodes (26) and a set of common electrodes (25) are provided in each pixel region. The pixel and common electrodes are shaped as hollow rectangles, and are alternately nested one within the other. When a voltage is applied, a horizontal electric field in two different directions (281, 282) is established. Liquid crystal molecules of the liquid crystal layer are twisted according to the two directions, thereby reducing color shift.

Abstract: A storage capacitor in a liquid crystal display is provided for increasing the capacitance of the storage capacitor without substantially changing the manufacturing process, the storage capacitor including a first capacitor electrode (18), a first insulating layer (16) formed on the first capacitor electrode, a second capacitor electrode (14) formed on the first insulating layer, a second insulating layer (12) formed on the second capacitor electrode, and a third capacitor electrode (11) formed on the second insulating layer and electrically connected with the first capacitor electrode. The second capacitor electrode is electrically connected with the pixel electrode (10) of the liquid crystal display. With this configuration, the capacitance of the storage capacitor is substantially increased without reducing the aperture ratio of each pixel of a liquid crystal display.

Abstract: A liquid crystal display (2) has a first substrate (21), a second substrate (22), and liquid crystal molecules (26) interposed between the substrates. Curved first slits (211) and curved second slits (221) are defined at insides of the substrates respectively. When an electric field is applied between the substrates, the liquid crystal molecules are inclined to be oriented parallel to the substrates. In addition, the curved first slits and the curved second slits affect the orientations of the liquid crystal molecules, such that the liquid crystal molecules are directed to incline in various directions in smooth continuums. The visual effect of the continuous domain vertical alignment liquid crystal display is the sum of multiple smooth continuous domains. Thus the continuous domain vertical alignment liquid crystal display provides a more even display performance at various different viewing angles.

Abstract: A liquid crystal display (LCD) (2) includes an upper substrate (201), a lower substrate (202), and a liquid crystal layer (208) interposed between the substrates. The upper substrate has a color filter (216). A planarization layer (204) and a reflection electrode (217) are disposed on the lower substrate. The planarization layer is made of a black resin. An adhesive frame (215) for conglutinating the substrates is disposed therebetween. The reflection layer has gaps therein, the gaps defining non-display areas. Parts of the planarization layer corresponding to the non-display areas absorb light beams leaked from the non-display areas. These parts of the planarization layer perform the function of a black matrix. Because the black matrix is provided on the lower substrate, light beams used to solidify the adhesive frame during manufacturing of the LCD are not obstructed. Thus the LCD has enhanced sealing and is more durable and reliable.

Abstract: A multi-domain IPS (in-plane switching) liquid crystal display (20) includes a first substrate (201), a second substrate (202), liquid crystal molecules (203) filled between the first and second substrates, and gate lines (211) and data lines (212) formed on the first substrate. The gate lines and data lines define pixel regions arranged in a matrix. Each pixel region includes pixel electrodes (233), common electrodes (243), and a TFT (thin film transistor) (220). The pixel electrodes and the common electrodes have a same curved shape, and are uniformly spaced apart from each other. Therefore the electric field generated by them is a smooth continuum of multiple domains, and the visual performance at various different viewing angles is equally good. Because the pixel and common electrodes do not have sharp bends, disclination is avoided. Therefore the IPS liquid crystal display has a high contrast ratio.

Abstract: A method for manufacturing an LCD panel includes the steps of: applying a sealing member on a first substrate to define a display area substantially enclosed by the sealing member, the sealing member containing a plurality of spacers mixed therein; applying at least one drop of a liquid crystal material to the display area of the first substrate; assembling the first substrate and a second substrate in a vacuum chamber; and curing the sealing member to integrate the substrates and thereby form the LCD panel. In this method, there is no need to spray spacers into the display area of the LCD panel. Therefore the process is simplified. The cell gap of the LCD panel is completely determined by the quantity of the liquid crystal material. The LCD panel has a uniform cell gap so as to ensure that the LCD panel provides high optical performance.