Patent application number | Description | Published |
20130057534 | LCD Panel and Method for Controlling Voltage Thereof - The present invention discloses an LCD panel, which includes a gate driver, a source driver, a plurality of gate lines and data lines. The gate lines and the data lines define a plurality of pixel units, and each pixel unit includes a TFT, a common electrode, and a pixel electrode. The data line is utilized to charge the pixel electrode. The LCD panel further includes a common electrode line, the common electrode line coupled to the common electrode. The common electrode line is utilized to provide alternating common electrode voltages to the common electrode, so that a voltage of the pixel electrode still approaches a target voltage by which the data line charges the pixel electrode when a gate voltage of the TFT is turned off. The present invention also provides a method for controlling voltages of the LCD panel. | 03-07-2013 |
20140111751 | OPTICAL COMPENSATION FILMS AND METHOD FOR REDUCING DARK-STATE LIGHT LEAKAGE OF VERTICAL ALIGNMENT LIQUID CRYSTAL DISPLAYS - Optical compensation films and a method for reducing dark-state light leakage of vertical alignment liquid crystal displays are disclosed. The light path difference (LCΔND) is in a range of 324.3-342.8 nm, and the pretilt angle is in a range of 85 to 90 degrees when measured at a wavelength of 550 nm. Wherein an in-plain retardation value Ro of the biaxial compensation film is in the range of 48-84 nm, an out-of-plain retardation value Rth of the biaxial compensation film is in the range of 160-280 nm, and a retardation value Rth of the TAC compensation film is within a range between Y1 and Y2. The compensation structure with single layer of biaxial compensation film not only can reduce the dark-state light leakage, but also can increase the contrastness and the resolution in the wide viewing angle. | 04-24-2014 |
20140125923 | Compensation System For Liquid Crystal Panels And Liquid Crystal Display - A compensation system for liquid crystal panels and a liquid crystal display are disclosed. The compensation system includes a first biaxial compensation film and a second biaxial compensation film respectively arranged on two sides of the liquid crystal panel. When the wavelength of incident lights is 550 nm, an in-plain retardation value of the first biaxial compensation film is Ro | 05-08-2014 |
20140139790 | Compensation system and liquid crystal display apparatus for liquid crystal panel - The present invention discloses a compensation system and a liquid crystal display apparatus used for a liquid crystal panel. The compensation system comprises a first biaxial retardation film and a second biaxial retardation film respectively disposed on either side of the liquid crystal panel. An in-plane retardation value of the first biaxial retardation film at a wavelength of 550 nm is Ro | 05-22-2014 |
20140192300 | Compensation System for Liquid Crystal Panel and Liquid Crystal Display Device - The present invention provides a compensation system for liquid crystal panel and liquid crystal display device. The compensation system includes first biaxial compensation film and second biaxial compensation film, disposed on two sides of liquid crystal panel respectively, first biaxial compensation film having planar compensation value Ro1 for incident light of 550 nm wavelength and compensation value Rth1 along thickness direction, second biaxial compensation film having planar compensation value Ro2 for incident light of 550 nm wavelength and compensation value Rth2 along thickness direction; wherein 15 nm≦Ro1≦94 nm; 35 nm≦Rth1≦214 nm; 35 nm≦Rth1≦214 nm; 14 nm≦Ro2≦101 nm; Y1≦Rth2≦Y2; Y1=0.004302×Rth1 | 07-10-2014 |
20140192304 | Optical Compensation Film Group and Method for Reducing Light Leakage of Vertical Alignment LCD Using the Same - The present invention provides an optical compensation film group and a method for reducing light leakage of a vertical alignment LCD using the same. For the vertical alignment LCD at a wavelength of 550 nm, an LCΔnd in the range of [305.8 nm, 324.3 nm], and a pretilt angle in the range of [85°, 90°), a compensation value Ro of an in-plane optical path difference of the biaxial compensation film is in the range of 48 nm≦Ro≦84 nm, and a compensation value Rth of an out-of-plane optical path difference of the biaxial compensation film is in the range of 160 nm≦Rth≦280 nm, and a TAC compensation film having a compensation value Rth is in the range of Y1≦Rth≦Y2. The present invention can effectively improve the serious light leakage caused by the conventional compensation structure with a single biaxial compensation film, the contrast and sharpness at the large viewing angles, and the costs. | 07-10-2014 |
20140198316 | Method and Apparatus for Measuring Reflective Intensity of Display Surface - The present invention provides a method for measuring reflective intensity of display surface, including: obtaining a luminance value of a first display and a luminance value of a second display when displaying, the first display and the second display having the same observed luminance, the peripheral of the surface of the first display being surrounded by light-shielding object, the first display and the second display being placed side by side; and obtaining the reflective intensity of the display surface in the ambient based on the luminance value of the first display and the luminance values of the second display when displaying. As such, the present invention provides convenient and accurate means to measure the reflective intensity of display surface. | 07-17-2014 |
20140198984 | Method for Establishing an Evaluation Standard Parameter and Method for Evaluating the Quality of a Display Image - The present invention discloses a method for establishing an evaluation standard parameter and method for evaluating the quality of a display image, wherein, the method comprises: taking pictures to a group of test images having different color shift severity degrees to obtain a sample picture group; selecting a standard picture by human eye; applying the Fourier transform for the brightness of the pictures of the sample picture group; applying convolution to the frequency distribution function and a contrast sensitivity function of human eye in the frequency domain; normalizing to the convolution function to obtain an evaluation parameter; selecting the evaluation parameter of the standard picture from the evaluation parameters of all the pictures of the sample picture group as an evaluation standard parameter. The present invention can obtain more objective and systemic evaluation standard parameter. | 07-17-2014 |
20140218411 | Method and System for Improving a Color Shift of Viewing Angle of Skin Color of an LCD Screen - The present invention discloses a method and system for improving a color shift of viewing angle of skin color of an LCD screen. The method comprises: comparing the gamma curves and the chromaticity of 0-255 grayscale of front viewing angle and oblique viewing angle of red (R), green (G), and blue (B) after adjusting according to the initial white balance voltage and changing the voltage dividing proportion of the blue-white-balance (BWB) voltage according to the color shift result to make a color shift value of oblique viewing angle of skin color picture of the LCD screen be always within a specification requirement. Through foregoing method, the present invention makes the color shift of skin color of viewing angle of the LCD screen is always within the specification requirement. | 08-07-2014 |
20140292792 | Method for Applying Gamma Compensation To A Display And Gamma Compensation Device - The present invention discloses a method for applying gamma compensation to a display and a gamma compensation device. The method comprises: respectively obtaining a brightness value when the display is displaying in a first environment, a brightness value of an ambient light reflected by a screen surface of the display in a second environment, wherein, the first environment is the environment that the display does not generate the ambient light reflected by the display; fitting to obtain a fitted gamma value according to the brightness value when the display is displaying in the first environment and the brightness value of the ambient light reflected by the screen surface of the display in the second environment; and adjusting a display brightness when the display is displaying according to the fitted gamma value. Through the above way, the present invention can increase the precise degree of the display in the environment having the ambient light, the sense of hierarchy and comfort. | 10-02-2014 |
20140293194 | LIQUID CRYSTAL PANEL AND THE LIQUID CRYSTAL DISPLAY - A liquid crystal panel and a liquid crystal display are disclosed. The liquid crystal display includes a liquid crystal cell having a light incident side and a light emitting side, a first polarizer arranged on the light incident side of the liquid crystal panel, a second polarizer arranged on the light emitting side of the liquid crystal panel, and a half wave plate arranged between the first polarizer and the liquid crystal cell. An absorbing axis of the first polarizer is parallel to the absorbing axis of the second polarizer, and an angle between a slow axis of the half wave plate and the absorbing axis of the first polarizer is 45 or 135 degrees. In this way, the liquid crystal display with the two polarizers parallel to each other can be in all-black state when no voltage is applied. In addition, the contrast is greatly enhanced. | 10-02-2014 |