Gamma voltage generation device, method and liquid crystal display
A liquid crystal display, gamma voltage technology, applied in static indicators, instruments, etc., can solve the problems of reducing work efficiency, complicated wiring, and tedious determination of resistance, and achieve the effects of improving work efficiency, low cost, and simple wiring.
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no. 1 example
[0027] figure 2 It is a main structural block diagram of the gamma voltage generating device provided by the first embodiment of the present invention. Please refer to figure 2 , the gamma voltage generating device includes: an arithmetic unit 23 , and a signal conversion unit 25 connected to the arithmetic unit 23 and the source driver 27 .
[0028] The arithmetic unit 23 is used to obtain the corresponding relationship between the gray scale and the gamma voltage according to the pre-input gamma curve and gamma curvature, and through the pre-stored calculation formula of the gray scale and the transmittance of the liquid crystal display. The corresponding relationship between the gamma voltage and the pre-stored gray scale value required by the liquid crystal display is used to obtain the digital signal of the gamma voltage, wherein the gamma curve is a relationship curve between the gamma voltage and the transmittance of the liquid crystal display.
[0029] Among them, ...
no. 2 example
[0036] Please refer to image 3 , which shows a main structural block diagram of the gamma voltage generating device provided by the second embodiment of the present invention. image 3 is in figure 2 improved on the basis of its with figure 2 The devices shown are similar, the difference being that the gamma voltage generating device further includes: an input unit 301 connected to the arithmetic unit 23 .
[0037] The input unit 301 is used to pre-input the obtained gamma curve and gamma curvature to the computing unit 23, wherein the gamma curve is a relationship curve between the gamma voltage and the transmittance of the liquid crystal display.
[0038] Wherein, the gamma curvature is the electro-optic response parameter of the liquid crystal display, and the gamma curvature can be set to 2.2, so that the best comfort suitable for human eye observation can be obtained. In other embodiments, as long as the most suitable human eye observation can be obtained For optim...
no. 3 example
[0044] Figure 4 It is a flowchart of the steps of the gamma voltage generation method provided by the third embodiment of the present invention. Please refer to Figure 4 , the method for generating a gamma voltage in this embodiment includes the following steps 401-403.
[0045] Step 401, the arithmetic unit obtains the corresponding relationship between the gray scale and the gamma voltage according to the pre-input gamma curve and gamma curvature, and through the pre-stored calculation formula of the gray scale and the transmittance of the liquid crystal display, and according to the gray scale and the gamma voltage The corresponding relationship between the gamma voltage and the pre-stored gray scale value required by the liquid crystal display is used to obtain the digital signal of the gamma voltage, wherein the gamma curve is the relationship curve between the gamma voltage and the transmittance of the liquid crystal display.
[0046] Among them, the calculation form...
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