Pixel circuit and display panel
US-2024428730-A1 · Dec 26, 2024 · US
Organic electroluminescence device
US8987993B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8987993-B2 |
| Application number | US-201414188864-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2014 |
| Priority date | Feb 25, 2013 |
| Publication date | Mar 24, 2015 |
| Grant date | Mar 24, 2015 |
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- Title
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Abstract
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An organic EL device comprising: an organic EL element; a first transistor that controls a drive current of the organic EL element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temperature characteristic as the first transistor; a resistor element that is connected to the second transistor; and an operational amplifier that controls the second transistor such that a predetermined reference voltage and a voltage across the resistor element become equal to each other; wherein the temperature correction circuit corrects the brightness adjustment voltage in accordance with an output from the operational amplifier.
First claim
Opening claim text (preview).
What is claimed is: 1. An organic EL device comprising: an organic EL element; a first transistor that controls a drive current of the organic EL element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temperature characteristic as the first transistor; a resisto…
Assignees
Inventors
Classifications
- G09G3/3291Primary
Physics · mapped topic
- H05B45/60Primary
Electricity · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8987993B2 cover?
- An organic EL device comprising: an organic EL element; a first transistor that controls a drive current of the organic EL element in accordance with a brightness adjustment voltage; and a temperature correction circuit that corrects the brightness adjustment voltage in accordance with a temperature; wherein the temperature correction circuit includes: a second transistor that has a same temper…
- Who is the assignee on this patent?
- Rohm Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G09G3/3291. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).