A display panel includes a base layer including a first region, and a second region which is adjacent to the first region, a pixel disposed on the first region of the base layer, a line electrically connected to the pixel and extending from the first region to the second region, a pad electrically connected to the line, at which an electrical signal is input to the display panel from outside thereof and disposed under a top surface of the base layer, and a test circuit on the base layer, in the second region, the test circuit being spaced apart from the first region and further from the first region than the pad.

A display device includes a metal pattern formed, in a frame region between a variant edge portion of the display device forming a cutout portion, and a display region. The metal pattern is formed from a metal layer conforming to at least a portion of the shape of the cutout portion.

A method for testing a touch display panel includes: dividing a frame period of the image into a first subframe period and a second subframe period; transmitting pixel data to some subpixels corresponding to a touch sensing electrode in the first subframe period; and transmitting pixel data to the other subpixels corresponding to the touch sensing electrode in the second subframe period. The number of the subpixels receiving pixel data of positive polarity in the some subpixels subtracted by the number of the subpixels receiving pixel data of negative polarity in the some subpixels is defined as a first value, the number of the subpixels receiving pixel data of positive polarity in the other subpixels subtracted by the number of the subpixels receiving pixel data of negative polarity in the other subpixels is defined as a second value, and a sum of the first and second values is 0.

An ink jet process is used to deposit a material layer to a desired thickness. Layout data is converted to per-cell grayscale values, each representing ink volume to be locally delivered. The grayscale values are used to generate a halftone pattern to deliver variable ink volume (and thickness) to the substrate. The halftoning provides for a relatively continuous layer (e.g., without unintended gaps or holes) while providing for variable volume and, thus, contributes to variable ink/material buildup to achieve desired thickness. The ink is jetted as liquid or aerosol that suspends material used to form the material layer, for example, an organic material used to form an encapsulation layer for a flat panel device. The deposited layer is then cured or otherwise finished to complete the process.

An electronic device substrate, a manufacturing method and a display device are provided. The electronic device substrate includes a base substrate, an organic encapsulation layer and a padding structure. The organic encapsulation layer is on the base substrate and includes a main part and an edge part; the padding structure on the base substrate protrudes from the base substrate; the edge part of the organic encapsulation layer at least partially covers the padding structure; with respect to the base substrate, a height of a part that is included by the padding structure and is away from the main part of the organic encapsulation layer is greater than a height of another part that is included by the padding structure and is close to the main part of the organic encapsulation layer.

A display device includes a pixel array including touch blocks; a plurality of test pads in a bezel area outside the pixel array for performing a pixel test and a touch block test; a plurality of pixel test lines and a plurality of touch block test lines connected to the test pads within the pixel array; a switching unit between the test pads and the pixel test lines and the touch block test lines and applying a test signal to any one of the pixel test lines and the touch block test lines; a pixel test switching pad in the bezel area and providing a control signal for testing pixel operation in the pixel array to the switching unit; and a touch block test switching pad in the bezel area and providing a control signal for testing the touch blocks within the pixel array to the switching unit.

A color shift compensation method, a display panel and a display device are provided. The color shift compensation method includes: acquiring color shift information generated with respect to a test region of a test display panel when the test region is viewed at a first viewing angle, at least a part of first subpixel units within the test region being provided with a test aperture ratio; and controlling, in accordance with the color shift information, at least a part of second subpixel units within a target region of a to-be-manufactured target display panel to be provided with a target aperture ratio being different from the test aperture ratio, to improve color shift within the target region when the target region is viewed at the first viewing angle, wherein a position of the target region on the target display panel is same as a position of the test region on the test display panel, and positions of at least the part of second subpixel units within the target region are same as positions of at least the part of first subpixel units within the test region.

A method of analyzing film on a substrate comprises receiving surface profile data obtained from measurements of a substrate having a plurality of discrete regions with one or more film layers; extracting, based on a predetermined pattern of the discrete regions, a plurality of parameters from the received surface profile data, the plurality of parameters comprising one or more parameters of a film layer of each discrete regions, and displaying a user interface. The user interface may comprise a plurality of individual graphs each illustrating the one or more parameters of the one or more film layers for a corresponding subset of the plurality of discrete regions, and a composite graph illustrating the one or more parameters of the one or more film layers for each discrete region of the plurality of discrete regions, wherein the composite graph corresponds to the plurality of individual graphs being overlaid together.

A method of analyzing film on a substrate comprises receiving surface profile data obtained from measurements of a substrate having a plurality of discrete regions with one or more film layers; extracting, based on a predetermined pattern of the discrete regions, a plurality of parameters from the received surface profile data, the plurality of parameters comprising one or more parameters of a film layer of each discrete regions, and displaying a user interface. The user interface may comprise a plurality of individual graphs each illustrating the one or more parameters of the one or more film layers for a corresponding subset of the plurality of discrete regions, and a composite graph illustrating the one or more parameters of the one or more film layers for each discrete region of the plurality of discrete regions, wherein the composite graph corresponds to the plurality of individual graphs being overlaid together.

An organic light emitting display device is disclosed, which comprises an anode electrode provided in a light emitting area on a substrate having a plurality of pixels, each pixel including a light emitting area and a transmissive area; an organic light emitting layer on the anode electrode; a cathode electrode on the organic light emitting layer; an auxiliary electrode connected with the cathode electrode; and a connection electrode connected with the anode electrode and provided in the transmissive area of the substrate.