Abstract: A voltage sensor system for determining an abnormal circuit condition in a multi-layer printed circuit board is disclosed. The printed circuit board has a plurality of layers. One of the layers includes a trace network and a sensor circuit. The sensor circuit includes the trace network and a sensing point. The sensor circuit is coupled between a voltage supply and a ground. A controller is coupled to the sensing point. The controller is operable to determine a voltage of the sensing point and compare the voltage to a threshold value to determine an abnormal circuit condition in the printed circuit board.

Abstract: A test device includes a power compensation module and a test module. The power compensation module receives AC power generated by a device under test to generate DC power to the device under test. The test module provides a plurality of test signals and a test mode to the device under test for testing the device under test.

Abstract: An exemplary backlight module (40) includes a number of point light sources (43) and a light-mixing member (47). The number of point light sources emit light beams of different colors. The light-mixing member mixes the light beams of different colors into white light beams. The light-mixing member includes a light entrance surface (470) opposite to the light sources. The light entrance surface includes a number of recesses (471). The recesses correspond to the number of point light sources. The backlight module has high efficiency of light mixing.

Abstract: An exemplary backlight module includes a light guide plate, and a light source positioned for illuminating the light guide plate. The light source includes a plurality of LED units, and each LED unit includes a red LED, two green LEDs, and a blue LED. Each red, green, and blue LED has a center. In each LED unit, the centers of the red LED and the blue LED are at two opposite sides respectively of an imaginary line defined between the centers of the green LEDs.

Abstract: An exemplary backlight module (12) includes a light guide plate (15) and a light source (17). The light guide plate includes a light incident surface (152), a top surface (154) connected with the light incident surface, and a bottom surface (156) opposite to the top surface. The light source includes an illuminator (172) located adjacent the light incident surface, and a light source reflector (19) cooperating with the light incident surface to generally surround the illuminator. The light source reflector includes a top plate (194) abutting a first end portion of the top surface of the light guide plate, and a bottom plate (196) abutting a second end portion of the bottom surface of the light guide plate. The bottom plate is narrower than the top plate.

Abstract: An exemplary backlight module includes a light guide plate, and a light source positioned for illuminating the light guide plate. The light source includes a plurality of LED units, and each LED unit includes a red LED, two green LEDs, and a blue LED. Each red, green, and blue LED has a center. In each LED unit, the centers of the red LED and the blue LED are at two opposite sides respectively of an imaginary line defined between the centers of the green LEDs.

Abstract: An exemplary backlight module (40) includes a number of point light sources (43) and a light-mixing member (47). The number of point light sources emit light beams of different colors. The light-mixing member mixes the light beams of different colors into white light beams. The light-mixing member includes a light entrance surface (470) opposite to the light sources. The light entrance surface includes a number of recesses (471). The recesses correspond to the number of point light sources. The backlight module has high efficiency of light mixing.

Abstract: An exemplary backlight module (23) includes a frame (25), a light guide plate (26), a reflective film (290), and a lamp (27). The frame includes a side wall (252). The light guide plate includes a light incident surface (261) and a bottom surface (263) adjacent to the light incident surface. The reflective film is disposed adjacent to the bottom surface. The lamp is received in an accommodating space cooperatively defined by the light incident surface, an inner surface of the side wall, and the reflective film.

Abstract: An exemplary backlight module (2) includes a light source (21) having at least two light emitting diodes (211), and a reflection layer (218). Each light emitting diode includes a top surface (214), a side surface (215) adjacent to the top surface. Each of the light emitting diodes configured to emit different colored light respectively. The reflection layer is formed on the top surface of the light emitting diode.

Abstract: An exemplary backlight module (12) includes a light guide plate (15) and a light source (17). The light guide plate includes a light incident surface (152), a top surface (154) connected with the light incident surface, and a bottom surface (156) opposite to the top surface. The light source includes an illuminator (172) located adjacent the light incident surface, and a light source reflector (19) cooperating with the light incident surface to generally surround the illuminator. The light source reflector includes a top plate (194) abutting a first end portion of the top surface of the light guide plate, and a bottom plate (196) abutting a second end portion of the bottom surface of the light guide plate. The bottom plate is narrower than the top plate.