# US 2021/0242302 A1 · Organic light emitting diode display

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- Number: US 2021/0242302 A1
- Document ID: US20210242302A1
- Status: Published application
- Kind: A1
- Application number: 17/239,027
- Filed: 2021-04-23
- Published: 2021-08-05
- Earliest claimed: 2014-11-14
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Mi Hae KIM; Min Ho KO; Seung Woo SUNG; Ki Myeong EOM; Jin JEON
- Web page: https://patentgrep.com/patent/US20210242302A1

## CPC

- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- G09G 3/3225: using an active matrix
- G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/1216: {the pixel elements being capacitors}
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing
- G09G 2310/0262: The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
- G09G 2320/0238: Improving the black level
- G09G 2320/0276: for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
- G09G 2320/045: Compensation of drifts in the characteristics of light emitting or modulating elements
- H10D 30/6757: {characterised by the structure of the channel, e.g. transverse or longitudinal shape or doping profile (TFTs having channel structures for preventing kink or snapback effects H10D30/6708; TFTs having lightly-doped source or drain extensions H10D30/6715)}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES

## Abstract

An organic light emitting diode display includes a plurality of pixels. At least one pixel is connected to a scan line receive a scan signal, a data line to receive a data signal, and voltage line to receive a driving voltage. The at least one pixel includes a switching transistor including a switching drain electrode to output the data voltage, a driving transistor including a driving source electrode connected to the switching drain electrode, and an organic light emitting diode connected to a driving drain electrode of the driving transistor. The driving source electrode is separated from the data line.

## Claims

### Claim 1

A display device, comprising:
a substrate;
a semiconductor layer on the substrate, the semiconductor layer including a plurality of channels and a plurality of electrodes;
a scan line including a switching gate electrode overlapping a switching channel of the plurality of channels;
a storage line including a storage electrode;
a data line crossing the scan line and for transmitting a data voltage;
a driving voltage line crossing the scan line and for transmitting a driving voltage;
a switching transistor including the switching channel, the switching gate electrode, a switching electrode of the plurality of electrodes, and an electrode of the plurality of electrode, wherein the electrode includes a first end disposed at a side of the switching channel, and the switching electrode is electrically connected to the data lines;
a driving transistor including a driving channel of the plurality of channels, a driving gate electrode overlapping the driving channel, the electrode, and a driving electrode, wherein the electrode includes a second end disposed at a side of the driving channel; and
a storage capacitor including the driving gate electrode and the storage electrode overlapping each other, wherein
the electrode comprises a first portion extending substantially parallel to the data line, an entirety of the first portion being separated from the data line in a plan view, and
at least a portion of the first portion overlaps the storage electrode in the plan view.