An inverter circuit, a gate driver using the same, and a display device according to an embodiment are discussed. The inverter circuit can include a first transistor connected between a high potential voltage line and a first node; a second transistor having a gate connected to the first node and turned on according to a voltage of the first node to charge a second control node to a high potential voltage of the high potential voltage line; a third transistor having a gate connected to a first control node, a first electrode connected to the first node, and a second electrode connected to the second control node; and a fourth transistor having a gate connected to the first control node, a first electrode connected to the second control node, and a second electrode connected to a low potential voltage line.

Display panel and display device are provided. The display panel includes a plurality of subpixels. A subpixel of the plurality of subpixels includes a pixel circuit and a light emitting element that are electrically connected. The pixel circuit includes a first transistor. A first electrode of the first transistor is connected to a first reference voltage signal terminal. A second electrode of the first transistor is electrically connected to an anode of the light emitting element. In a light emitting retention stage of the subpixel of the plurality of subpixels, the first reference voltage signal terminal is connected to a negative potential signal or a ground potential signal. The plurality of subpixels includes at least a first subpixel and a second subpixel, and a color of the first subpixel is different from a color of the second subpixel.

Provided are a pixel circuit, a display apparatus and a driving method. In one type of pixel circuit, a first switch transistor is arranged between a gate electrode of a driving transistor and a second electrode of a first reset transistor, such that a leak current of the first reset transistor has a relatively small influence on a gate signal of the driving transistor. In other types of pixel circuit, a second reset transistor for short-circuiting the gate electrode and a first electrode is provided, such that the resetting of an anode of a light-emitting device is only related to a signal of a second reset signal end. Therefore, the voltage difference between two ends of a third reset transistor can be reduced by means of adjusting a signal voltage of a reference voltage signal end.

A pixel includes a first capacitor connected between a first electrode and a second electrode connected to a first node, a first transistor including a gate electrode connected to the first node, a first electrode connected to a second node, and a second electrode connected to a third node, a second transistor including a gate electrode that receives a data write gate signal, a first electrode that receives a data voltage, and a second electrode connected to the second node, a third transistor connected between the first node and the third node, a fourth transistor connected between the first node and an initialization voltage input terminal to which an initialization voltage is applied, an eighth transistor t connected to the third transistor and the fourth transistor, and an organic light emitting diode including an anode and a cathode receiving a second power supply voltage.

A display apparatus includes a first semiconductor layer, a first gate insulating layer, a first conductive layer, an etch stop layer, a second gate insulating layer, a second conductive layer, a first interlayer insulating layer, a second semiconductor layer, a third gate insulating layer, a second interlayer insulating layer, and a first connection electrode layer that are sequentially stacked. The first connection electrode layer includes a first connection electrode contacting the first semiconductor layer via a contact hole defined in the first gate insulating layer, the etch stop layer, the second gate insulating layer, the first interlayer insulating layer, the third gate insulating layer, and the second interlayer insulating layer.

A system for rendering color images on an electro-optic display when the electro-optic display has a color gamut with a limited palette of primary colors, and/or the gamut is poorly structured (i.e., not a spheroid or obloid). The system uses an iterative process to identify the best color for a given pixel from a palette that is modified to diffuse the color error over the entire electro-optic display. The system additionally accounts for variations in color that are caused by cross-talk between nearby pixels.

A display device includes: a substrate; an active layer; a first insulating layer on the active layer; a gate electrode; a second insulating layer on the first conductive layer; a second conductive layer on the second insulating layer; a third insulating layer on the second conductive layer; and a source electrode connected to the source region of the first active pattern through a contact hole passing through the first insulating layer and the second insulating layer, and a drain electrode connected to the drain region, wherein the first active pattern, the gate electrode, the source electrode and the drain electrode constitute a thin film transistor, the display device further comprising at least one light shielding pattern around the thin film transistor, wherein the light shielding pattern includes a side light shielding pattern such that the third conductive layer passes through at least the third insulating layer.

A thin film transistor substrate can include a buffer layer on a base substrate and having a first buffer layer and a second buffer layer; a semiconductor layer disposed on the buffer layer; a gate insulating film on the semiconductor layer; and a gate electrode spaced apart from the semiconductor layer, at least a part of the gate electrode overlapping with the semiconductor layer. The base substrate, the first buffer layer, the second buffer layer, the semiconductor layer, the gate insulating film and the gate electrode are sequentially stacked, and a surface oxygen concentration of the first buffer layer is higher than a surface oxygen concentration of the second buffer layer.

An object is to provide a display device that performs accurate display. A circuit is formed using a transistor that includes an oxide semiconductor and has a low off-state current. A precharge circuit or an inspection circuit is formed in addition to a pixel circuit. The off-state current is low because the oxide semiconductor is used. Thus, it is not likely that a signal or voltage is leaked in the precharge circuit or the inspection circuit to cause defective display. As a result, a display device that performs accurate display can be provided.

An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.