Invention Grant
- Patent Title: Subpixel driving circuit compensating for voltage drop and electroluminescent display device comprising the same
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Application No.: US16600431Application Date: 2019-10-11
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Publication No.: US11341896B2Publication Date: 2022-05-24
- Inventor: Hoyoung Ko , JuhnSuk Yoo
- Applicant: LG Display Co., Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Display Co., Ltd.
- Current Assignee: LG Display Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Polsinelli PC
- Priority: KR10-2018-0150786 20181129
- Main IPC: G09G3/30
- IPC: G09G3/30 ; G09G3/20

Abstract:
An electroluminescent display device comprises a pixel including a plurality of subpixels; a plurality of power lines for providing a power voltage to the plurality of subpixels; a data line for providing data signals to the plurality of subpixels; a plurality of gate lines for providing gate signals to the plurality of subpixels; and a reference node line for connecting a plurality of reference nodes included in the plurality of subpixels, wherein each of the subpixels comprises a light emitting diode and a subpixel driving circuit for controlling light emission of the light emitting diode, and wherein the subpixel driving circuit provides a driving current without including a high potential voltage to the light emitting diode as a reference voltage that is applied from one of the plurality of power lines to the reference node included in the subpixel driving circuit, and some of the plurality of subpixels include a compensation transistor connected to the reference node receiving the reference voltage.
Public/Granted literature
- US20200175911A1 SUBPIXEL DRIVING CIRCUIT AND ELECTROLUMINESCENT DISPLAY DEVICE COMPRISING THE SAME Public/Granted day:2020-06-04
Information query
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