Abstract: Copper posts 22 are provided on a carrier substrate 20, and a semiconductor die 40 serving as a bridge die is attached between the copper posts 22. The semiconductor die 40 is attached by the resin layer 43 covering the terminal electrodes 42 such that the terminal electrodes 42 face the carrier substrate 20. The resin layer 43 is cured to form an encapsulant layer 23. A wiring layer 24 is formed on one side of the encapsulant layer 23, and a wiring layer 28 is formed on the other surface. Active dies 50 and 55 are attached to an interposer P. According to this method, a bridge die is attached in a face-down manner. Thus, reliable attachment can be realized. Since an expensive active die is attached last, manufacturing cost can be reduced. For the resin layer 43, an NCF or a DAF is preferably used.

Abstract: As an example of a semiconductor device is disclosed. The semiconductor device 1 includes a semiconductor die 3 and a wiring layer 5a to which the semiconductor die 3 is attached. The semiconductor die 3 includes a semiconductor substrate 3a having a first surface and a second surface opposite thereto, a plurality of terminal electrodes 3b provided on the first surface of the semiconductor substrate 3a, and a cured resin layer 3c. The cured resin layer 3c is provided on the first surface of the semiconductor substrate 3a so as to cover the plurality of terminal electrodes 3c. The semiconductor die 3 can be, for example, a bride die that connects a semiconductor die 2a and a semiconductor die 2b to each other.

Abstract: As an example, a method for mounting a bridge die 20 on a support such as a redistribution layer in a state where a connection terminal of the bridge die 20 faces upward (face-up) is disclosed. In this method, before forming an adhesive layer on a back surface of the bridge die, a resin layer 23 is formed so as to cover terminal electrodes 22 on a semiconductor substrate 21 of the bridge die 20 with a thermosetting resin film (e.g. DAF). Each bridge die 20 is mounted on the support such as a wiring layer 12 by vacuum-suctioning an entire surface of the cured resin layer 23 with a collet. According to this method, it is possible to prevent the bride die from bending as compared with a method of suctioning only at the outer edge avoiding the terminal electrode.

Abstract: A semiconductor device is disclosed. The semiconductor includes semiconductor member and a support. The semiconductor member includes a semiconductor substrate having a first surface and a second surface on an opposite side, a plurality of terminal electrodes provided on the first surface of the semiconductor substrate, a through electrode that penetrates the semiconductor substrate and has a first end protruding from the first surface and a second end protruding from the second surface, and a cured resin layer provided on the first surface so as to cover the plurality of terminal electrodes and the first end of the through electrode. The support includes at least one wiring electrode. The semiconductor member is attached to the support. The second end of the through electrode and the wiring electrode of the support are bonded to each other.

Abstract: A method for thermo-compression bonding (TCB) a bridge die 20 having a TSV 23 to a redistribution layer is disclosed. In this method, a terminal electrode 22 and an upper end 23a of the TSV 23 on the bridge die 20 are covered with a thermosetting resin film (e.g. DAF) to form a resin layer 24, which is then cured. A metal collet C that sucks the bridge die 20 is heated, and the heat is transferred to the entire surface 24a of the resin layer 24 while applying pressure, thereby heat-bonding a lower end 23b of the TSV 23 to the wiring electrode of the redistribution layer. According to this method, the amount of heat transferred to a bonded portion between the lower end 23b and the wiring electrode increases. The pressure during heat-bonding is applied to the entire surface of the resin layer 24. Thermo-compression is performed reliably.

Abstract: As an example, a method for mounting a bridge die 20 on a support such as a redistribution layer in a state where a connection terminal of the bridge die 20 faces upward (face-up) is disclosed. In this method, before forming an adhesive layer on a back surface of the bridge die, a resin layer 23 is formed so as to cover terminal electrodes 22 on a semiconductor substrate 21 of the bridge die 20 with a thermosetting resin film (e.g. DAF). Each bridge die 20 is mounted on the support such as a wiring layer 12 by vacuum-suctioning an entire surface of the cured resin layer 23 with a collet. According to this method, it is possible to prevent the bride die from bending as compared with a method of suctioning only at the outer edge avoiding the terminal electrode.

Abstract: A method for thermo-compression bonding (TCB) a bridge die 20 having a TSV 23 to a redistribution layer is disclosed. In this method, a terminal electrode 22 and an upper end 23a of the TSV 23 on the bridge die 20 are covered with a thermosetting resin film (e.g. DAF) to form a resin layer 24, which is then cured. A metal collet C that sucks the bridge die 20 is heated, and the heat is transferred to the entire surface 24a of the resin layer 24 while applying pressure, thereby heat-bonding a lower end 23b of the TSV 23 to the wiring electrode of the redistribution layer. According to this method, the amount of heat transferred to a bonded portion between the lower end 23b and the wiring electrode increases The pressure during heat-bonding is applied to the entire surface of the resin layer 24. Thermo-compression is performed reliably.

Abstract: A liquid crystal display device which includes one image signal line which is connected to a plurality of pixels, a scanning line drive part which outputs an ON voltage to the respective pixels in a predetermined order, and a data line drive part which outputs image signal voltages. The data line drive part outputs a gray level signal voltage corresponding to a gray level value of the pixel as an image signal voltage in a first period, and outputs a correction gray level signal voltage different from the gray level signal voltage as an image signal voltage in a second period which precedes the first period. The liquid crystal display device further includes a control part which generates the correction gray level signal voltage based on the gray level value of the pixel and one or plurality of gray level values of pixels which precede the pixel in order.

Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.

Abstract: Provided is a liquid crystal display device, including: a data line; a plurality of pixel circuits; an output grayscale value generating circuit for outputting an output grayscale value obtained by correcting a display grayscale value indicating a grayscale potential having one of positive polarity and negative polarity; and a data-line driving circuit for selectively outputting an output potential having one of positive polarity and negative polarity corresponding to the output grayscale value to the data line. The data-line driving circuit outputs the potential so that the positive-polarity output potential corresponding to a smallest output grayscale value becomes lower than a positive-polarity grayscale potential indicated by a smallest one of the display grayscale values and that the negative-polarity output potential corresponding to the smallest output grayscale value becomes higher than a negative-polarity grayscale potential indicated by the smallest one of the display grayscale values.

Abstract: A display device includes a frame frequency conversion circuit configured to convert a frame frequency of an input display data and a timing control circuit configured to control a first drive circuit and a second drive circuit based on a frame frequency after the conversion. The display device generates at least two display areas on the display panel. The at least two display areas display images at different frame frequencies. The display device further includes a switch unit configured to display an image at the frame frequency before the conversion at one of the at least two display areas and configured to display an image at the frame frequency after the conversion at another one of the at least two display areas. At least one of a boundary position and a size of the at least two display areas varies with time.

Abstract: A liquid crystal display device includes a plurality of pixel circuits, data lines, and a data-line driving circuit connected to the data lines. Each of the pixel circuits includes a pixel capacitance having one end provided with a common potential. In accordance with a grayscale value for one of the plurality of pixel circuits, the data-line driving circuit selectively outputs a positive-polarity signal and a negative-polarity signal to the one pixel circuit. The data-line driving circuit outputs the positive-polarity signal and the negative-polarity signal so that an average of a potential of the positive-polarity signal and a potential of the negative-polarity signal corresponding to the grayscale value changes in accordance with the grayscale value, a temperature, and a position of the one pixel circuit.

Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.

Abstract: A data line driving section (6) outputs a video signal voltage for each pixel to a data line (DL) for each predetermined period in order. In outputting a video signal voltage for a pixel, the data line driving section (6) outputs a gradation signal voltage having a voltage corresponding to a gradation value of the pixel as the video signal voltage during a second part of the predetermined period, and outputs a correction gradation signal voltage different from the gradation signal voltage as the video signal voltage during a first part of the predetermined period. A control section (4) changes a relationship between the correction gradation signal voltage and the gradation signal voltage based on a combination of the gradation value of the pixel and a gradation value of a pixel preceding the pixel.

Abstract: A liquid crystal display device which includes one image signal line which is connected to a plurality of pixels, a scanning line drive part which outputs an ON voltage to the respective pixels in a predetermined order, and a data line drive part which outputs image signal voltages. The data line drive part outputs a gray level signal voltage corresponding to a gray level value of the pixel as an image signal voltage in a first period, and outputs a correction gray level signal voltage different from the gray level signal voltage as an image signal voltage in a second period which precedes the first period. The liquid crystal display device further includes a control part which generates the correction gray level signal voltage based on the gray level value of the pixel and one or plurality of gray level values of pixels which precede the pixel in order.

Abstract: A liquid crystal display device which includes one image signal line which is connected to a plurality of pixels, a scanning line drive part which outputs an ON voltage to the respective pixels in a predetermined order, and a data line drive part which outputs image signal voltages. The data line drive part outputs a gray level signal voltage corresponding to a gray level value of the pixel as an image signal voltage in a first period, and outputs a correction gray level signal voltage different from the gray level signal voltage as an image signal voltage in a second period which precedes the first period. The liquid crystal display device further includes a control part which generates the correction gray level signal voltage based on the gray level value of the pixel and one or plurarity of gray level values of pixels which precede the pixel in order.

Abstract: Provided is a display device including: a control portion; a display panel including one or more pixel circuits and an image signal line connected to the pixel circuits; and an image signal line driving circuit. The control portion includes a difference acquiring circuit for acquiring difference data between a value of a gray-level potential, which is to be applied to one of the pixel circuits from the image signal line, and a value of a precharge potential based on the gray-level potential. The image signal line driving circuit calculates the precharge potential based on the value of the gray-level potential and the difference data, and supplies the image signal line with the precharge potential and the gray-level potential in sequence.

Abstract: A resistive element is connected in series to a cathode terminal of an LED light source at a last stage (or an anode terminal of an LED light source at a first stage) of an LED chain, and a resistance value of the resistive element is configured to be variable in resistance value in accordance with a variation of voltage drops of the LEDs connected in series so that a resistance value of a resistive element connected to an LED chain having a large voltage drop has a smaller resistance value then a resistance value of a resistive element connected to an LED chain having a small voltage drop. With this configuration, the power, which has been wasted otherwise as heat in the backlight driver IC, may be dispersed to the resistive elements.

Abstract: In a display device and a display driver, when a grayscale of a display image is equal to or lower than a specific grayscale value obtained from a histogram of the display image, a display grayscale is extended with a linear function. On the other hand, when a grayscale of a display image is equal to or higher than the specific grayscale value, histogram equalization of a part higher than the specific grayscale value is performed, and the display grayscale is extended with a non-linear function obtained from the histogram equalization.

Abstract: Provided is a display device capable of producing an image of excellent quality with reduced flicker and little reduction in luminance, the display device including: a backlight having light sources such as LED devices arranged two-dimensionally, each of which may be individually modulated in luminance; a moving velocity detection unit VD1 (109) for detecting a moving velocity of an object in a video (for example, moving velocity of a foreground); and a luminance variation control unit (113) for automatically controlling luminance variations of the LED devices for each frame, in accordance with the moving velocity.