Electronic device with liquid crystal display

Abstract

An electronic device, such as personal computer, incorporating a liquid crystal panel which uses LEDs as an illuminating light source for a liquid crystal panel to reduce power consumption and size of the electronic device. When 3-color LED lamps 13 R, 13 G, 13 B of the LED light source 12 are lit, red, green and blue rays emitted from respective LED lamps enter the scatterplate 11 where they are scattered and mixed to produce white light LW which goes out from the entire surface of the scatterplate 11 to illuminate the entire rear surface of the transmission type liquid crystal panel 10. The white light LW that has entered the liquid crystal panel 10 is modulated according to the alignment of the liquid crystal material and passes through the color filters of the counter substrate. The user can view the transmitted light LT from the liquid crystal panel 10 as a color image.

1 . (canceled) 
     
     
         2 . A display device comprising:
 a liquid crystal panel comprising:
 a first substrate; 
 a drive circuit comprising a first transistor over the first substrate; 
 a pixel matrix circuit comprising a second transistor over the first substrate; 
 an insulating layer over the first transistor and the second transistor; 
 a pixel electrode over the insulating layer and electrically connected to the second transistor; 
 a liquid crystal over the pixel electrode; and 
 a second substrate over the liquid crystal; and 
   a light source adjacent to the liquid crystal panel,   wherein the first transistor overlaps with the insulating layer, the liquid crystal, and the second substrate, and   wherein the light source comprises a plurality of light-emitting diodes.   
     
     
         3 . The display device according to  claim 2 , wherein the pixel electrode is a reflective electrode. 
     
     
         4 . The display device according to  claim 2 , wherein the first substrate and the second substrate are glass substrates. 
     
     
         5 . The display device according to  claim 2 , wherein each of the plurality of light-emitting diodes emit any of a red ray, a green ray, and a blue ray. 
     
     
         6 . The display device according to  claim 2 , comprising a scatterplate between the liquid crystal panel and the light source. 
     
     
         7 . The display device according to  claim 6 , wherein the scatterplate comprises acrylic. 
     
     
         8 . The display device according to  claim 2 , wherein the plurality of light-emitting diodes are two-dimensionally arranged. 
     
     
         9 . The display device according to  claim 2 , wherein the light source is located along an edge of the second substrate. 
     
     
         10 . The display device according to  claim 2 , wherein the light source faces a bottom surface of the liquid crystal panel. 
     
     
         11 . The display device according to  claim 2 , wherein a surface of the second substrate has an uneven surface. 
     
     
         12 . The display device according to  claim 2 , wherein the drive circuit is composed of a CMOS circuit. 
     
     
         13 . The display device according to  claim 2 ,
 wherein each of the plurality of light-emitting diodes comprises a resin, and wherein a surface of the resin is rounded.   
     
     
         14 . An electronic device comprising a liquid crystal display comprising the display device according to  claim 2 . 
     
     
         15 . The electronic device according to  claim 14 , wherein the electronic device is one selected from the group consisting of a video camera, a digital video camera, a head mounted display, a car navigation equipment, a personal computer, and a mobile information terminal.