Gamma Correction of HT190WG1-100
|School||Beijing Jiaotong University|
|Keywords||TFT-LCD Gradation circuit gamma correction Dot inversion drive program|
From the TFT-LCD display driving principle , analyzes the basic working principle of the liquid crystal display drive circuit , focusing on the GAMMA circuit of the liquid crystal display device ( ie gradation circuit ) the implementation of the works and grayscale display . to solve the LCD the grayscale gamma correction problem . By taking into account the non-linear and non-linearity of the liquid crystal electro-optical properties of the human visual light intensity sensor , to solve the line inversion and dot inversion drive circuit , gamma correction , and ultimately LCD grayscale display the actual and target values ??fit . The aim of the selection by the data driver circuit , the liquid crystal material selection as well as the gray scale voltage generating circuit is designed and parameter settings , the liquid crystal display panel of the image gray HT190WG1 - 100 to obtain the desired visual effect , to achieve practical application of the basic requirements . For the liquid crystal display panel HT190WG1- 100 study selected 6bit data driver IC, and a gradation gamma correction circuit there is the targeted design HT190WG1 - 100 point inversion driving circuit , through the analysis of a series of test experiments adjust fitting of the actual and target values ??of the gradation display of the liquid crystal panel , to achieve the purpose of effectively driving the liquid crystal panel 100 of HT190WG1 gradation display , thereby HT190WG1 - 100 to obtain an excellent image display effect .