The present disclosure belongs to the field of displays, and relates to a display panel and a display device. The display panel has a display region and a peripheral region. The display panel comprises a substrate, a driving circuit, and a plurality of first signal pins. The driving circuit is located on the substrate. The plurality of first signal pins are located on the substrate and are arranged at intervals in the peripheral region, and the plurality of first signal pins are electrically connected to the driving circuit. The plurality of first signal pins comprise at least two first pins, and the at least two first pins are electrically connected. Because the at least two first pins are already electrically connected, voltage signals outputted by the at least two first pins to the driving circuit may be balanced, thereby balancing the voltage signals outputted by the driving circuit to a light emitting element, and improving the uniformity and stability of the voltage signals. Thus, the display effect of the display panel is improved.

An electroluminescent visual display unit having: a matrix of electroluminescent pixels formed from pixels arranged on a substrate, in a matrix arrangement in lines and columns, each pixel being formed by an elementary emitting zone; a first control block to control a graphic and/or alphanumeric data stream that can be displayed on the matrix of pixels; a second control block to control a video data stream that can be displayed on the matrix of pixels; and a unit for generating a reference voltage, the device being characterized in that: each elementary emitting zone is connected to a static memory, addressed by the first control block, and to a dynamic memory, addressed by the second control block; the first and second control blocks for displaying data alternately or simultaneously on the same matrix of pixels.

A display device includes a display panel, a display controller configured to output a video data signal, a gate driver, and a plurality of source drivers which are arranged in an extension direction of gate lines and generate a gradation voltage signal to be supplied to each of a plurality of pixel units based on the video data signal supplied from the display controller. Each of the plurality of source drivers includes a data processing unit configured to share an abnormal state sharing signal indicating whether an abnormality has occurred in communication with the display controller with other source drivers, and when the abnormal state sharing signal indicates that an abnormality has occurred in communication with the display controller, supply a gradation voltage signal corresponding to predetermined gradation data different from a gradation voltage signal based on the video data signal to each of the plurality of pixel units.

Described herein are methods and apparatuses to obtain an image, or a set of images, of a patient's teeth from one or more predetermined viewing angles. These methods and apparatuses may include the use an overlay comprising an outline of teeth for each predetermined viewing angle. The overlay may be used for automatically capturing, focusing and/or illuminating the teeth. Also described herein are methods and apparatuses for using a series of images of the patient's teeth including a set of predetermined views to determine if a patient is a candidate for an orthopedic procedure.

An electroluminescent display device includes a pixel circuit having transistors, and a gate driving circuit providing an emission signal, a first scan signal, and a second scan signal to the pixel circuit. The gate driving circuit includes an emission signal generating circuit for applying the emission signal to a gate electrode of at least one of the transistors, a first scan signal generating circuit for applying the first scan signal to a gate electrode of at least one of the transistors, and a second scan signal generating circuit for applying the second scan signal to a gate electrode of at least one of the transistors. The first scan signal generating circuit receives the emission signal and a voltage of a QB node of the second scan signal generating circuit, and the emission signal generating circuit and the first scan signal generating circuit include an n-type transistor and a p-type transistor.

An electroluminescent display device includes a pixel circuit having transistors, and a gate driving circuit providing an emission signal, a first scan signal, and a second scan signal to the pixel circuit. The gate driving circuit includes an emission signal generating circuit for applying the emission signal to a gate electrode of at least one of the transistors, a first scan signal generating circuit for applying the first scan signal to a gate electrode of at least one of the transistors, and a second scan signal generating circuit for applying the second scan signal to a gate electrode of at least one of the transistors. The first scan signal generating circuit receives the emission signal and a voltage of a QB node of the second scan signal generating circuit, and the emission signal generating circuit and the first scan signal generating circuit include an n-type transistor and a p-type transistor.

A semiconductor device that is less influenced by variations in characteristics between transistors or variations in a load, and is efficient even for normally-on transistors is provided. The semiconductor device includes at least a transistor, two wirings, three switches, and two capacitors. A first switch controls conduction between a first wiring and each of a first electrode of a first capacitor and a first electrode of a second capacitor. A second electrode of the first capacitor is connected to a gate of the transistor. A second switch controls conduction between the gate and a second wiring. A second electrode of the second capacitor is connected to one of a source and a drain of the transistor. A third switch controls conduction between the one of the source and the drain and each of the first electrode of the first capacitor and the first electrode of the second capacitor.

A semiconductor device that is less influenced by variations in characteristics between transistors or variations in a load, and is efficient even for normally-on transistors is provided. The semiconductor device includes at least a transistor, two wirings, three switches, and two capacitors. A first switch controls conduction between a first wiring and each of a first electrode of a first capacitor and a first electrode of a second capacitor. A second electrode of the first capacitor is connected to a gate of the transistor. A second switch controls conduction between the gate and a second wiring. A second electrode of the second capacitor is connected to one of a source and a drain of the transistor. A third switch controls conduction between the one of the source and the drain and each of the first electrode of the first capacitor and the first electrode of the second capacitor.

A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.

A pixel circuit, display device, and method of driving a pixel circuit enabling source-follower output with no deterioration of luminance even with a change of the current-voltage characteristic of the light emitting element along with elapse, enabling a source-follower circuit of n-channel transistors, and able to use an n-channel transistor as an EL drive transistor while using current anode-cathode electrodes. The circuit includes a source of a TFT used as a drive transistor that is connected to an anode of a light emitting element, and a drain of the TFT is connected to a power source potential. A capacitor is connected between a gate and source of the TFT, and a source potential of the TFT is connected to a fixed potential through a TFT used as a switching transistor.