Abstract: A display device includes a timing controller to generate a plurality of data control signals, a source driving unit to receive the plurality of data control signals from the timing controller and generate a data voltage, and a display panel to receive the data voltage and output an image, wherein the source driving unit transmits the data voltage to the display panel, through a plurality of data lines, with delays that are respectively different corresponding each frame.

Abstract: A method of operating a display driver IC (DDI) includes comparing previous line data with current line data and the R, G, and B components of a color data signals, and controlling whether to activate part of an intermediate processing circuit to process the current line data or more than a single component of the color data signal according to a comparison result.

Abstract: A method and apparatus for controlling writing of data to a graphic memory is provided. In the method and apparatus, a plurality of consecutively input data pieces are controlled to be not consecutively written to the same memory area in terms of time or space.

Abstract: Methods of operating a display driver integrated circuit (IC) are provided. A method of operating a display driver IC may include generating a first clock signal, and calculating a frequency of the first clock signal using a second clock signal. Moreover, the method may include generating an adjustment signal using the frequency of the first clock signal and a target frequency, and adjusting the frequency of the first clock signal using the adjustment signal. Related display driver ICs and portable electronic devices are also provided.

Abstract: A voltage generator includes a boosting circuit boosting a power voltage to generate first through fourth voltages, and a boosting controller controlling the boosting circuit. The boosting controller sets the third and fourth voltages to a voltage level lower than that of a ground voltage while the first and second voltages are generated, so that a plurality of voltages may be stably generated, i.e., without latch-up.

Abstract: A voltage generator includes a boosting circuit boosting a power voltage to generate first through fourth voltages, and a boosting controller controlling the boosting circuit. The boosting controller sets the third and fourth voltages to a voltage level lower than that of a ground voltage while the first and second voltages are generated, so that a plurality of voltages may be stably generated, i.e., without latch-up.

Abstract: A method and apparatus for controlling writing of data to a graphic memory is provided. In the method and apparatus, a plurality of consecutively input data pieces are controlled to be not consecutively written to the same memory area in terms of time or space.

Abstract: A display driving device includes a first source amplifier that receives first display data and supplies a first pixel voltage to a first pixel based on the received first display data, and a second source amplifier that receives second display data and first control data and supplies a second pixel voltage to a second pixel based on the received second display data and first control data. The second source amplifier has a first stage in which a first process is performed on an input signal based on the second display data, and a second stage in which a second process is performed on the first processed input signal to output the second pixel voltage. The first source amplifier may be configured to conditionally supply the first pixel voltage to the second pixel.

Abstract: A display device includes a touch sensor controller configured to identify a gesture. A display driver integrated circuit (IC) is configured to flip, scroll, or shrink an image based on the results of identification, which are received from the touch sensor controller. Accordingly, a user may more easily touch one or more touch targets displayed on the display device with just one hand.

Abstract: A display driver circuit comprises a frame memory comprising m main rows (m>1) and n dummy rows (0<n<m) corresponding to m horizontal display lines of a panel and configured to store received first frame data in m rows among the m main rows and the n dummy rows, and a memory control unit configured to control write and scan operations of the frame memory such that the first frame data is written from a write start row selected from among the m main rows and the n dummy rows.

Abstract: A panel driving circuit that produces a panel test pattern and a method of testing a panel are provided. The driving circuit includes a pattern generation unit and a selection unit. The pattern generation unit responds to a system clock and produces pattern test data and pattern test signals. The selection unit responds to a test signal and selects and outputs either (a) the pattern test data and the pattern test signals that are outputted from the pattern generation unit, or (b) the pattern test data and pattern test signals that are directly applied from the outside. The driving circuit and the method of the panel test generates the panel test data, the horizontal synchronizing signal, the vertical synchronizing signal, and the data activating signal within the driving circuit using a system clock so that the testing of the panel can be carried out without using a separate test device.

Abstract: A display driver integrated circuit (IC) that stores an output mode of driving circuit control signal in a non-volatile memory and a method of outputting the driving circuit control signal, wherein the display drive IC fixes the driving circuit control signal values using fixation wire disposed on top layers of the display driver IC, and a method of manufacturing the display driver IC.

Abstract: A source line driver circuit and a display apparatus including the same are provided. The source line driver circuit includes a logic block configured to receive serialized image data, to change the number of bits of the image data, and to output image data having the changed number of bits, and a source channel driver unit configured to receive the image data having the changed number of bits and to provide at least one analog voltage corresponding to the received image data to source lines. Accordingly, the number of necessary switches may be reduced, and therefore, the required area and/or current consumption may also be reduced.

Abstract: A semiconductor chip includes a semiconductor substrate including a first surface and a second surface, an integrated circuit (IC) on the first surface of the semiconductor substrate, and a heat radiation portion on the second surface of the semiconductor substrate. The heat radiation portion includes heat radiation patterns in a direction perpendicular to the second surface, and a heat radiation layer on upper portions of the heat radiation patterns. The heat radiation patterns include a plurality of recesses and a plurality of protrusions and the heat radiation layer includes a metal material and has a flat upper surface.

Abstract: A semiconductor chip includes a circuit region having an integrated semiconductor circuit on a semiconductor substrate, and a heat radiation member on at least a portion of a scribe lane region configured to at least partially surround the circuit region, the heat radiation member including a plurality of heat radiation fins that extend in a direction orthogonal to an upper surface of the semiconductor substrate.

Abstract: A panel driving circuit that produces a panel test pattern and a method of testing a panel are provided. The driving circuit includes a pattern generation unit and a selection unit. The pattern generation unit responds to a system clock and produces pattern test data and pattern test signals. The selection unit responds to a test signal and selects and outputs either (a) the pattern test data and the pattern test signals that are outputted from the pattern generation unit, or (b) the pattern test data and pattern test signals that are directly applied from the outside. The driving circuit and the method of the panel test generates the panel test data, the horizontal synchronizing signal, the vertical synchronizing signal, and the data activating signal within the driving circuit using a system clock so that the testing of the panel can be carried out without using a separate test device.

Abstract: A method and apparatus for controlling writing of data to a graphic memory is provided. In the method and apparatus, a plurality of consecutively input data pieces are controlled to be not consecutively written to the same memory area in terms of time or space.

Abstract: A voltage generators is provided including a boosting circuit and a boosting control circuit. The boosting circuit is configured to boost a power voltage to generate first through fourth voltages. The boosting control circuit is configured to control the boosting circuit to enable the first through fourth voltages to be generated in sequence, such that when a current voltage of the first through fourth voltages is boosted to a predetermined level, a voltage next to the current voltage is generated. Related liquid crystal displays and methods are also provided.

Abstract: A method and apparatus for controlling writing of data to a graphic memory is provided. In the method and apparatus, a plurality of consecutively input data pieces are controlled to be not consecutively written to the same memory area in terms of time or space.

Abstract: A display driver generates a respective charge pumping signal and respective driving signals synchronized to a respective same clock signal for each of the CPU and video interface modes. Because such respective signals are synchronized to a respective same clock signal, the noise superimposed on the driving signals applied on a display panel is regular and uniform across the whole display panel, for each of the CPU and video interface modes. Accordingly, affects of such regular noise are advantageously not noticeable to the human eye, for both the video and CPU interface modes of operation.