Disclosed is a gamma amplifier which includes a first amplification device that receives a first input signal during a first track period in a first time period, compensates for a first offset voltage from the first input signal during a first compensation period in the first time period, and generates a first output signal during a second time period after the first time period based on a control signal, and a second amplification device that receives a second input signal during a second track period in the second time period, compensates for a second offset voltage from the second input signal during a second compensation period in the second time period, and generates a second output signal during a third time period after the second time period based on the control signal and processing circuitry configured to generate the control signal.

To provide a display device in which a reflective liquid crystal element and a light-emitting element are switched for display, and the operation of a reflective liquid crystal element driver IC and the operation of a light-emitting element driver IC can be alternately stopped even when they are integrated. The display device includes a pixel, a driver circuit, and a switching control circuit. The driver IC includes a buffer amplifier for outputting a grayscale voltage to drive the liquid crystal element and a buffer amplifier for outputting a grayscale voltage to drive the light-emitting element. Each buffer amplifier includes a transistor configured to supply a bias current, and a switch. The switch is configured to control a conduction state between a wiring for supplying a bias voltage and a gate of the transistor. The switching control circuit is configured to output a switching signal for controlling a conduction state of the switch.

A display device includes: a display substrate including a display area and a non-display area adjacent to each other; and an opposing substrate opposing the display substrate. The display substrate includes: a pixel in the display area; a gate driver at the non-display area and including a gate and data wiring; an organic layer on the gate and data wiring; a column spacer on the organic layer; a connection portion connected to the gate and data wiring at contact holes respectively exposing the gate and data wiring; and a protective layer on the connection portion. In a top plan view, the protective layer has a same shape as a shape of the connection portion. The opposing substrate includes a black matrix at the display area to define a pixel area of the pixel and at the non-display area to define the display area and the non-display area.

A data driving circuit comprises a plurality of driving units, each of the driving units comprising first, second, third and fourth switch units, each of the switch units comprising first and second input terminals and an output terminal; the output terminals being output terminals of the data driving circuit; two data control terminals, one of which is respectively connected to the first input terminals of the first switch unit and the second switch unit, the other of which is respectively connected to the first input terminals of the third switch unit and the fourth switch unit; a first switching control terminal, connected to the second input terminal of one of the switch units connected to the same data control terminal; a second switching control terminal, connected to the second input terminal of the other of the switch units connected to the same data control terminal.

A flat panel display includes a signal generator to generate data signals to respective data lines via an output terminal or to generate a control signal for controlling switches. The signal generator includes a first voltage supply unit to supply, to the output terminal, a voltage of a first voltage sources, a voltage stabilizing unit to raise or drop the voltage supplied to the output terminal, and a second voltage supply unit to supply, to the output terminal, a voltage from a second voltage source, after the voltage of the output terminal is raised or dropped.

A display apparatus includes a display panel, a gamma reference voltage generator and a data driver. The gamma reference voltage generator is configured to generate a gamma reference voltage. The gamma reference voltage includes a gamma amplifier configured to output the gamma reference voltage. The data driver is configured to generate a data voltage based on the gamma reference voltage and to output the data voltage to the display panel. A polarity of an offset voltage of the gamma amplifier is inverted alternately in a unit of one frame and in a unit of two frames.

A display device includes a display panel including first data lines, second data lines, gate lines, and a plurality of pixels, a voltage generator which generates a first driving voltage and a second driving voltage, and a source driver which generates a first data voltage having a first polarity based on the first driving voltage and a second data voltage having a second polarity based on the second driving voltage. The source driver includes a first source driver coupled to the first data lines and a second source driver coupled to the second data lines. The voltage generator alternately provides the first driving voltage and the second driving voltage to each of the first source driver and the second source driver.

A display driving apparatus is disclosed. The display driving apparatus includes a data processing unit, a first setting unit, a second setting unit, a mapping unit and a source driving unit. The data processing unit receives and processes an image data including data lines. The first setting unit generates a first setting signal corresponding to a first gamma value. The second setting unit generates a second setting signal corresponding to a second gamma value. The mapping unit maps the first gamma value and second gamma value to odd-numbered data lines and even-numbered data lines of the data lines respectively according to the first setting signal and second setting signal. The source driving unit outputs the first gamma value and second gamma value to odd-numbered display lines and even-numbered display lines of display lines of a display panel respectively.

A display apparatus includes a first substrate, a first dummy substrate on the first substrate, and a second dummy substrate extending from the first dummy substrate and bent. The second dummy substrate is on different side surfaces of the first substrate in a first direction. The display apparatus also includes a plurality of pixels on the first dummy substrate, a gate driver on the second dummy substrate and connected to the pixels, and a data driver connected to one side of the first dummy substrate in a second direction crossing the first direction and connected to the pixels.

To provide a semiconductor device, a liquid crystal display device, and an electronic device which have a wide viewing angle and in which the number of manufacturing steps, the number of masks, and manufacturing cost are reduced compared with a conventional one. The liquid crystal display device includes a first electrode formed over an entire surface of one side of a substrate; a first insulating film formed over the first electrode; a thin film transistor formed over the first insulating film; a second insulating film formed over the thin film transistor; a second electrode formed over the second insulating film and having a plurality of openings; and a liquid crystal over the second electrode. The liquid crystal is controlled by an electric field between the first electrode and the second electrode.